JP7328538B2 - Equipment operation stop system and equipment operation stop method - Google Patents

Description

TECHNICAL FIELD The present invention relates to an equipment operation shutdown system and an equipment operation shutdown method, and is particularly suitable for use in stopping operation of equipment in a sintering factory when an earthquake occurs.

When an earthquake occurs in a manufacturing plant, it may not be possible to ensure the safety of the equipment and workers unless the operation of the equipment in the manufacturing plant is stopped. In addition, damage to equipment in the manufacturing plant may spread to the outside of the manufacturing plant. Therefore, there is a demand for a technique for stopping the operation of equipment in a manufacturing plant when an earthquake occurs in the manufacturing plant. As a technique of this kind, there is a technique described in Patent Document 1.

The technology described in Patent Document 1 estimates the strength of the earthquake motion at the target site from the earthquake early warning data distributed by the Japan Meteorological Agency, and measures the loss when the operation of the equipment at the target site is stopped at the strength of the earthquake motion. If the amount is less than the amount of loss if the operation of the equipment at the target site is not stopped, the operation of the equipment at the target site will be stopped, and if not, the operation of the equipment at the target site will not be stopped. disclosed.

Japanese Unexamined Patent Application Publication No. 2008-5981

By the way, in a sintering plant in an ironworks, raw materials are continuously processed in a high-temperature environment, and various equipments are used. Therefore, in order to stop the operation of the equipment in the sintering factory, it is conceivable that the target site described in Patent Document 1 is the sintering factory.
However, with the technique described in Patent Document 1, it is necessary to estimate the amount of loss when the operation of the equipment at the target site is stopped and the amount of loss when the operation of the equipment at the target site is not stopped. As mentioned above, the sintering plant has a lot of equipment, so it is not easy to accurately estimate such a loss amount. Moreover, as described above, whether or not to stop the operation of the equipment must be determined in consideration of not only the economic index such as the amount of loss, but also the viewpoint of safety. Further, in the technique described in Patent Literature 1, the operation of all facilities included in the target site is stopped. Therefore, there is a possibility that the operation of equipment that does not need to be stopped is also stopped. As described above, the technique described in Patent Literature 1 has the problem that it is not easy to appropriately stop the operation of the equipment in the sintering plant when an earthquake occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to appropriately stop the operation of equipment in a sintering plant when an earthquake occurs.

The facility operation stop system of the present invention is a facility operation stop system for stopping the operation of facilities in a sintering factory when an earthquake occurs, and the stop is to instruct to stop the operation of predetermined facilities in the sintering factory. an instruction means for stopping operation of predetermined equipment included in the first area of the sintering plant and predetermined equipment included in the second area of the sintering plant; A first stop instruction means for instructing to stop when a condition is satisfied, and a second stop instruction means for instructing to stop operation of predetermined equipment included in the second area when a second condition is satisfied. and shaking measuring means for measuring shaking caused by an earthquake in the sintering factory, and the predetermined equipment included in the first area is sintered ore produced by a sintering machine to a sieve, and predetermined equipment disposed downstream of the belt conveyor, wherein the predetermined equipment included in the second area is disposed upstream of the belt conveyor Including predetermined equipment, the first condition and the second condition are conditions that indicate the effects of shaking caused by an earthquake on the equipment, and the first condition is greater than the second condition. is a condition indicating that equipment will be greatly affected by shaking caused by an earthquake; The fact that the equipment is greatly affected by the shaking caused by the earthquake means that the shaking due to the earthquake measured by the shaking measuring means is large, and the stop instructing means, when the second condition is satisfied, the second It is characterized in that no instruction to stop the operation of predetermined facilities included in one area is issued .

A method for stopping operation of equipment according to the present invention is a method for stopping operation of equipment in a sintering plant in the event of an earthquake, wherein an instruction to stop operation of predetermined equipment in the sintering plant is issued. an instruction step, wherein the stop instruction step is to stop operation of predetermined equipment included in the first area of the sintering plant and predetermined equipment included in the second area of the sintering plant; A first stop instruction step of instructing to stop when a condition is satisfied; and a second step of instructing to stop operation of predetermined equipment included in the second area when a second condition is satisfied. and a stop instruction step, wherein the predetermined equipment included in the first area includes a belt conveyor that conveys the sintered ore produced by the sintering machine to a sieve, and a belt conveyor downstream of the belt conveyor including predetermined equipment arranged, the predetermined equipment included in the second area includes predetermined equipment arranged upstream of the belt conveyor, and the first condition and the second The conditions are conditions that indicate the impact of earthquake shaking on equipment, and the first condition is a condition that indicates that the equipment is more affected by earthquake shaking than the second condition , The condition indicating the effect of the shaking caused by the earthquake on the equipment is a condition determined by the shaking caused by the earthquake measured by the shaking measuring means for measuring the shaking caused by the earthquake in the sintering plant, and the equipment is affected by the shaking caused by the earthquake. A large influence means that the shaking due to the earthquake measured by the shaking measuring means is large, and the stop instructing step is included in the first area when the second condition is satisfied. It is characterized by not issuing an instruction to stop the operation of a predetermined facility .

ADVANTAGE OF THE INVENTION According to this invention, when an earthquake occurs, operation of the equipment of a sintering factory can be stopped appropriately.

It is a figure which shows an example of the outline|summary of a sintering process. It is a figure which shows an example of the layout of a sintering plant. It is a figure which shows an example of a functional structure of a management apparatus. It is a figure which shows an example of an external appearance structure of a stop switch. It is a figure explaining an example of the method of operating a stop switch. It is a flow chart explaining an example of a facility operation stop method.

An embodiment of the present invention will be described below with reference to the drawings.

An embodiment of the present invention will be described below with reference to the drawings. For convenience of explanation and notation, part of the configuration in each drawing is omitted, simplified, or deformed as necessary. Further, in the present embodiment, equipment is an object whose operation is to be stopped.

<Outline of sintering process>
FIG. 1 is a diagram showing an example of an overview of the sintering process. In FIG. 1, the white arrow indicates the direction in which the raw material for sintering or the sintered ore is conveyed. In addition, since the manufacturing equipment for manufacturing the sintered ore can be realized by a known technique, the outline thereof is shown here, and the detailed description thereof is omitted. Also, the sintering process is not limited to that shown in FIG.

In FIG. 1, a plurality of raw material tanks 10 are charged with raw materials for sintering (ores and auxiliary raw materials for component adjustment) and coagulants. The sintering raw materials charged into each raw material tank 10 may be the same or different. A desired amount of sintering raw material is cut out from a desired raw material tank 10 . The raw material for sintering and the condensed material cut out from the raw material tank 10 are conveyed to the drum mixer 11 by a belt conveyor (not shown) and put into the drum mixer 11 . Water is supplied to the drum mixer 11 . By rotating the drum mixer 11, the moisture is spread over the sintering raw material as evenly as possible. The sintering raw material and the condensed material to which water has been added in this way are placed in the drum mixer 12 . The drum mixer 12 may be supplied with coke breeze as one of the coagulants. By rotating the drum mixer 12, the raw material for sintering and the coagulant containing coke breeze are stirred and distributed as uniformly as possible. The sintering raw material and condensate to which the coke breeze and water have been added in this way are supplied to the sintering machine 20 . The coke breeze may be supplied from the raw material tank 10 or may be supplied from a place other than the raw material tank 10 . In addition, since coke breeze is included in the coagulant, coke breeze does not need to be re-supplied to the drum mixer 12 . In the following description, coke breeze is used as the coagulant for the sake of simplicity.

In FIG. 1, the sintering machine 20 includes a pallet group consisting of a plurality of pallets 21, a raw material supply hopper 22, an ignition furnace 23, a wind box 24, a subgate device 25, an intake pipe 26, a drive roller 27a, 27b and.

An example of the basic operation of the sintering machine 20 will be described. . As shown in FIG. 1, each pallet 21 has an endless band shape as a whole, with the leading end and the trailing end connected to each other, and endlessly circulates in the sintering machine 20 as the driving rollers 27a and 27b rotate. In FIG. 1, the driving rollers 27a, 27b rotate clockwise, so that the pallet group rotates clockwise (the arrow lines attached to the left and right of the sintering machine 20 indicate the driving rollers 27a, 27b, That is, it indicates the circulating direction of the pallet group).

While the pallet group is rotating, each pallet 21 is supplied with the raw material for sintering and the coke breeze from the raw material supply hopper 22, and the transportation of the raw material for sintering and the coke breeze is started. At this time, the cutting amount in the direction corresponding to the width direction of the pallet 21 is adjusted by the sub-gate device 25 provided in the lower part of the raw material supply hopper 22 . Thereby, the height (layer thickness) of the sintering raw material loaded inside the pallet 21 can be adjusted. The upper part of the raw material for sintering loaded inside the pallet 21 is ignited by the ignition furnace 23, and exhaust gas is sucked downward by the blower through the wind box 24 and the intake pipe 26. Exhaust gas is sent to a dust collector 28 through an intake pipe 26 . The dust collector 28 is, for example, an electric dust collector. The blower 29 is a so-called main blower and is for sucking the exhaust gas.

The sintering machine 20 advances the combustion zone downward from the upper surface of the sintered layer while the pallet group moves as described above, and continuously produces sintered ore. When the pallet 21 reaches the sintered ore discharge section, the manufactured sintered ore is discharged from the pallet 21 . Then, the pallet 21 from which the sintered ore has been discharged is circulated and conveyed to the raw material supply hopper 22 .

The sintered ore discharged from the pallet 21 is supplied to the crusher 30 arranged directly under the sintered ore discharge section. The sintered ore is crushed by crusher 30 . This adjusts the grain size (grain size) of the sintered ore. The sintered ore whose grain size has been adjusted is supplied through a funnel-shaped chute to a cooler 40 arranged below the crusher 30 and cooled. The cooler 40 has, for example, a truck, a rail on which the truck goes around, and a blower. The sintered ore is cooled by blowing cold air against the sintered ore while the cart on which the sintered ore is loaded is rotated. Hot air generated by heat exchange between the cold air and the sintered ore is supplied to the boiler equipment 70 through the intake pipe 60 . The boiler equipment 70 uses the hot air supplied from the cooler 40 to generate steam and hot water.

The sintered ore cooled by the cooler 40 is conveyed to the sieve 50 by a belt conveyor (not shown). The sintered ore is passed through a sieve 50 . Thereby, the sintered ore supplied to a blast furnace is sorted. Sintered ore selected as sintered ore to be supplied to the blast furnace is conveyed by a belt conveyor and a tripper and charged into an ore tank of the blast furnace.

<Overview of sintering plant>
FIG. 2 is a diagram showing an example of the layout of the sintering plant P. As shown in FIG. In FIG. 2, for convenience of notation, the same components as those shown in FIG. 1 are denoted by different reference numerals.
In FIG. 2, in this embodiment, the sintering plant P is divided into a first area 100, a second area 200, and a third area 300 as units for stopping the operation of the equipment. The first area 100, the second area 200, and the third area 300 are not physically separated areas in the sintering plant P, but virtual areas.

Although the details will be described later, when giving an instruction to stop the operation of the predetermined equipment included in the first area 100, the predetermined equipment included in the second area 200 and the predetermined equipment included in the third area 300 It also instructs to stop the equipment of When instructing to stop the operation of the predetermined equipment included in the third area 300, the instruction to stop the operation of the predetermined equipment included in the second area 200 is also given. At this time, the operation of the predetermined equipment included in the first area 100 is not stopped. When instructing to stop the operation of the predetermined equipment included in the second area 200, the predetermined equipment included in the predetermined equipment included in the first area 100 and the predetermined equipment included in the third area 300 The operation of the prescribed equipment does not stop.

In this embodiment, the predetermined equipment included in the second area 200 includes the raw material tank 210 and equipment through which the sintering raw material discharged from the raw material tank 210 passes. In the example shown in FIG. 2, the predetermined equipment included in the second area 200 is a raw material tank 210, a belt conveyor 220, a granulating equipment 230, a belt conveyor 240, a sintering machine 250, and a crusher 260. , a chiller 270 and a boiler plant 280 . In the example shown in FIG. 2, the belt conveyor 220, the granulator 230, the belt conveyor 240, the sintering machine 250, the crusher 260, and the cooler 270 are equipment through which the sintering raw material discharged from the raw material tank 210 passes. be.

The raw material tank 210 corresponds to the raw material tank 10 shown in FIG. The belt conveyor 220 is for conveying the raw material for sintering and the coke breeze from the raw material tank 10 to the granulator 230 . The granulating equipment 230 is equipment for granulating the raw material for sintering and coke breeze, and has drum mixers 11 and 12 . The belt conveyor 240 is for conveying the sintering raw material and coke breeze from the granulator 230 to the sintering machine 250 . The sintering machine 250 corresponds to the sintering machine 20 shown in FIG. Incidentally, here, the sintering machine 250 includes ancillary equipment of the sintering machine 250 (for example, equipment such as a gas blower for supplying fuel gas and combustion air to the ignition furnace 23). The crusher 260, the cooler 270, and the boiler equipment 280 correspond to the crusher 30, the cooler 40, and the boiler equipment 70 shown in FIG. 1, respectively.

A predetermined facility included in the third area 300 is a predetermined facility that is not included in either the first area 100 or the second area 200 . In this embodiment, the predetermined equipment included in the third area 300 includes equipment for sucking the exhaust gas generated in the sintering machine 250 and discharging it into the chimney 700 and equipment for producing coke breeze. . In the example shown in FIG. 2 , the predetermined equipment included in the third area 300 includes a dust collector 310 , a blower 320 and coke breeze production equipment 330 . A dust collector 310 and a blower 320 correspond to the dust collector 28 and the blower 29 shown in FIG. 1, respectively. As predetermined equipment included in the third area 300 , desulfurization/denitration equipment may be further included before or after the dust collector 310 .

The coke breeze manufacturing facility 330 is a facility for pulverizing lump coke generated under the blast furnace sieve into coke breeze. The belt conveyor 340 is for conveying the coke breeze from the coke breeze manufacturing facility 330 to the raw material tank 210 . Here, a case of conveying coke breeze from the coke breeze manufacturing facility 330 to the raw material tank 210 will be described as an example. However, this need not necessarily be the case. For example, coke breeze may be transported from the coke breeze production facility 330 to the granulation facility 230 without passing through the raw material tank 210 . As described above, the predetermined equipment included in the second area 200 includes the raw material tank 210 and equipment through which the sintering raw material discharged from the raw material tank 210 passes. The coke breeze production facility 330 and the belt conveyor 340 are not facilities through which the sintering raw material discharged from the raw material tank 210 passes.

In this embodiment, the predetermined equipment included in the first area 100 classifies the sintered ore produced by the sintering machine 250 (passed through the crusher 260 and the cooler 270). a belt conveyor 110 for conveying to a sieving facility 120, and a predetermined facility arranged downstream of the belt conveyor 110. In the example shown in FIG. 2, the predetermined equipment included in the first area 100 includes a belt conveyor 110, a screen equipment 120, a belt conveyor 130 and a tripper equipment 140.

The belt conveyor 110 is for conveying the sintered ore from the cooler 270 to the sieving equipment 120 . The sieve equipment 120 corresponds to the sieve 50 shown in FIG. Incidentally, the number of sieves 50 may be plural. The belt conveyor 130 is for conveying the sintered ore from the screen equipment 120 to the tripper equipment 140 . The tripper equipment 140 has a hopper and a tripper, loads the sintered ore conveyed by the belt conveyor 130 into the tripper via the hopper, and moves the tripper loaded with the sintered ore to remove the ore in the blast furnace. Transfer to a tank.
As described above, the predetermined equipment included in the second area 200 and the predetermined equipment included in the third area 300 are predetermined equipment arranged upstream of the belt conveyor 110 .

In the example shown in FIG. 2, the sintering plant P has a sprinkler facility 400 and a management room 500 outside the first to third areas 100, 200, and 300. As shown in FIG.
The sprinkler equipment 400 is for spraying water on (the sintered ore placed on) the belt conveyor 110 from above the belt conveyor 110 in the downstream part of the belt conveyor 110 . In addition, the belt conveyor 110 has a downward slope from the downstream side to the upstream side. Therefore, the water supplied from the sprinkler system 400 is transmitted to the upstream side of (the sintered ore placed on) the belt conveyor 110 . The sprinkler system 400 also has an emergency power supply (for example, an automatic start-up diesel generator). Therefore, the sprinkler system 400 can be operated by the emergency power supply equipment without being supplied with power from the outside. Incidentally, the cooling medium may not necessarily be water as long as the cooling medium capable of cooling (the sintered ore placed on) the belt conveyor 110 is supplied. For example, ice, fire extinguishing agent, or digestive fluid may be used as the cooling medium.

A management device 510 for managing the operation in the sintering plant P is arranged in the management room 500 . Although the details will be described later, the management device 510 generates a signal instructing to stop operation, and outputs the signal to the control device of the facility whose operation is to be stopped. Upon receiving this signal, the control device stops the operation of the facility controlled by the control device. In addition, the management device 510 instructs the activation of the emergency power supply equipment of the sprinkler equipment 400 when stopping the supply of electric power to the predetermined equipment included in the third area 300 . Thereby, the sprinkler system 400 automatically operates. Also, in this embodiment, the control room 500 is provided with a seismic intensity measurement device 520 that measures seismic intensity. The seismic intensity measuring device 520 is an example of shake measuring means. In this embodiment, the seismic intensity measuring device 520 is, for example, a seismic intensity meter.

<Reasons for dividing the operation suspension range in the sintering plant P>
As described above, the post-process of the sintering plant P includes a blast furnace. A blast furnace is a reactor (vessel) and cannot be shut down immediately. On the other hand, in the sintering plant P, as described above, a plurality of facilities operate in conjunction with each other. Therefore, in the sintering plant P, the operation can be stopped sequentially (or simultaneously) from the upstream equipment. Therefore, in the sintering plant P, from the viewpoint of safety, the environment, and disaster prevention, the inventors determined the facilities to be stopped in each area, It was found that the operation of the equipment in the sintering plant P can be appropriately stopped by stopping the operation of the equipment in the upstream area according to the situation. In this embodiment, each facility in the sintering plant P is divided into a first area 100, a second area 200, and a third area 300 based on such knowledge.

The reason why each facility in the sintering plant P is divided into the first area 100, the second area 200, and the third area 300 will be explained below. In the present embodiment, the extent of the influence of shaking (vibration) caused by an earthquake on equipment is divided into three stages. In the steelworks assumed in this embodiment, the case where the degree of impact of the earthquake shaking on the equipment is divided into three stages when the equipment is subjected to shaking due to an earthquake of seismic intensity 4, 5, and 6 will be described as an example. .

First, the first area 100 will be explained.
As described above, the belt conveyor 110 conveys the sintered ore cooled by the cooler 270 . Therefore, even if the operation of the belt conveyor 110 is stopped while the sintered ore is placed on the belt conveyor 110, it is considered that the belt conveyor 110 will not ignite due to the heat of the sintered ore. However, even in such a sintered ore, only the vicinity of the surface may be cooled, and the inside may remain hot. When the operation of the belt conveyor 110 is stopped due to the occurrence of an earthquake, such sintered ore may crack on the belt conveyor 110, exposing the high-temperature interior. When it does so, the surrounding sintered ore will be heated and, as a result, the belt conveyor 110 will also be heated. And when the temperature of the belt conveyor 110 exceeds the heat-resistant temperature of the belt conveyor 110, there is a possibility that the belt conveyor 110 catches fire. When an earthquake occurs, the sintered ore placed on the belt conveyor 110 vibrates, increasing such risk.

Therefore, in this embodiment, even if an earthquake with a seismic intensity of 4 or 5 occurs, the operation of the belt conveyor 110 is not stopped, so that safety is enhanced. In general, from the viewpoint of ensuring safety, it is preferable to stop equipment when an earthquake occurs. On the other hand, in the present embodiment, an idea opposite to such an idea is adopted.

However, if an earthquake with a seismic intensity of 6 occurs and workers must evacuate immediately, it is necessary to stop the operation of the belt conveyor 110 . This is because it is not preferable from the viewpoint of ensuring safety to continue to operate equipment that is not operated for the purpose of ensuring safety in the absence of workers, regardless of the occurrence of an earthquake. In this case, in order to reliably prevent the belt conveyor 110 from igniting, water is sprinkled on the sintered ore on the belt conveyor 110 by the sprinkler equipment 400 . As described above, the sprinkler equipment 400 is operated by an emergency power supply equipment and is equipment arranged downstream of the belt conveyor 110 , but is not included in the first area 100 . Since the sprinkler system 400 is operated for the purpose of ensuring safety, it is operated even in the absence of workers.

In addition, if the operation of the belt conveyor 110 is stopped while there is a large amount of sintered ore on the belt conveyor 110, it will take time to restore the belt conveyor 110. This is the reason why the operation of the conveyor 110 is not stopped. In addition, since the sintered ore after passing through the screen equipment 120 is placed on the belt conveyor 130, the temperature of the sintered ore is low, and the possibility of ignition unlike the belt conveyor 110 is low.

When the operation of the belt conveyor 110 is not stopped, sintered ore accumulates near the exit of the belt conveyor 110 when the operation of the equipment on the downstream side of the belt conveyor 110 is stopped. Therefore, when the operation of the belt conveyor 110 is to be stopped, the operation of the facilities on the downstream side of the belt conveyor 110 is also stopped.
For the above reasons, the first area 100 includes the belt conveyor 110 and predetermined equipment arranged downstream of the belt conveyor 110 .

Next, the second area 200 will be explained.
If an earthquake with a seismic intensity of 4 occurs, there is a risk that the truck of the cooler 270 and the pallet 21 of the sintering machine 250 will come off the wheels. Therefore, when an earthquake of seismic intensity 4 occurs, it is preferable to stop the operation of the sintering machine 250 and the cooling machine 270 . When the operation of the sintering machine 250 and the cooling machine 270 is stopped, the sintering raw material and the coke fine will be stored in the sintering machine 250 unless the operation of the equipment upstream of the sintering machine 250 and the cooling machine 270 is stopped. Gather near the entrance. Also, high-temperature sintered ore accumulates near the inlet of the cooler 270 . On the other hand, the coke breeze production facility 330 often has a margin in the amount of stored coke breeze relative to the production volume of coke breeze. Therefore, the coke breeze production facility 330 is not included in the second area 200 in this embodiment.
For the above reasons, the second area 200 includes the raw material tank 210 and equipment through which the sintering raw material discharged from the raw material tank 210 passes. Further, since the operation of the cooler 270 is stopped, the operation of the boiler facility 280 is also stopped together with the operation of the cooler 270 is stopped. Therefore, the boiler equipment 280 is also included in the second area 200 .

Next, the third area 300 will be explained.
An electric dust collector is often used as the dust collector 310 . An electrostatic precipitator has a discharge electrode and a dust collection electrode. In an electric dust collector, a discharge electrode generates a corona discharge to electrify fine particles contained in the exhaust gas, and the fine particles adhere to the dust collection electrode by electrostatic force. In an earthquake with a seismic intensity of 4, the vibration (amplitude) of the collecting electrode caused by the earthquake is small. Therefore, the possibility of short-circuiting between the discharge electrode and the dust collection electrode is low. Also, the blower 320 is less likely to operate abnormally in an earthquake with a seismic intensity of about 4. On the other hand, when an earthquake with a seismic intensity of 5 occurs, the vibration (amplitude) of the dust collection electrode caused by the earthquake increases, increasing the possibility of short-circuiting between the discharge electrode and the dust collection electrode. Further, if the discharge electrode and the dust collection electrode are short-circuited, red smoke may be generated from the chimney 700 unless the operation of the blower 320 is stopped.

The coke breeze production facility 330 may be included in the second area 200, but as described above, there is often a margin in the amount of storage relative to the production volume of coke breeze. Therefore, in this embodiment, the coke breeze manufacturing facility 330 and the belt conveyor 340 are included in the third area 300 .
For the above reasons, in the third area 300, as a predetermined facility that is not included in the first area 100 or the second area 200, the exhaust gas generated by the sintering machine 250 is sucked into the chimney A facility for discharging to 700 and a facility for producing coke breeze are to be included.

<Configuration of management device 510>
Next, an example of the configuration of the management device 510 for stopping the operation of predetermined facilities included in the first area 100, the second area 200, and the third area 300 for each area will be described. FIG. 3 is a diagram showing an example of a functional configuration of the management device 510. As shown in FIG. The hardware of the management device 510 is realized by using, for example, an information processing device having a CPU, ROM, RAM, HDD, and various interfaces, or dedicated hardware. The management device 510 is a device for managing the entire sintering plant P, and has functions other than the functions described below. detailed description is omitted.

<<Operation Input Determining Unit 511>>
The operation input determination unit 511 determines the details of the operation of the stop switches SW1, SW2, and SW3 by the operator. In this embodiment, the operation input determination unit 511 determines whether the stop switches SW1, SW2, and SW3 are on or off.
FIG. 4 is a diagram showing an example of the external configuration of the stop switches SW1, SW2, and SW3.
In FIG. 4, the stop switch SW1 is a switch that is operated by the operator when the seismic intensity measuring device 520 detects that an earthquake of seismic intensity 6 has occurred. A display is provided in front of the stop switch SW1 to make the operator easily aware that the stop switch SW1 is the switch to be operated when an earthquake of seismic intensity 6 occurs ("emergency switch" in FIG. 4). Stop (Seismic intensity 6)”).

The stop switch SW2 is a switch that is operated by the operator when the seismic intensity measuring device 520 detects that an earthquake with a seismic intensity of 4 has occurred. A display is provided in front of the stop switch SW2 to make the operator easily aware that the stop switch SW2 is a switch that should be operated when an earthquake of seismic intensity 4 occurs ("emergency switch" in FIG. 4). Stop (Seismic intensity 4)”).

The stop switch SW3 is a switch that is operated by the operator when the seismic intensity measurement device 520 detects that an earthquake with a seismic intensity of 5 has occurred. A display is provided in front of the stop switch SW3 to make the operator easily aware that the stop switch SW3 is the switch to be operated when an earthquake of seismic intensity 5 occurs ("emergency switch" in FIG. 4). Stop (Seismic intensity 5)”).

FIG. 5 is a diagram illustrating an example of a method of operating the stop switch SW1. Since the method of operating the stop switches SW2 and SW3 is the same as the method of operating the stop switch SW1, detailed description thereof will be omitted here.
5, the stop switch SW1 has a base B, a button P and a cover C. As shown in FIG. The base portion B and the cover C are connected by a connecting portion J. As shown in FIG. The cover C is rotatable with respect to the base portion B with the connecting portion J as a fulcrum. Further, the cover C is made of a transparent member. By doing so, the state of the button P can be visually recognized from the outside. As shown in the first drawing from the top of FIG. 5, the upper part of the base B is covered with the cover C when the cover C is closed. As shown in the second to fourth figures from the top of FIG. 5, when the cover C is opened, the top of the base B is open.

The upper surface of the base B is open for arranging the button P. The button P is arranged such that a part of the upper region protrudes from the upper surface of the base B and a part of the lower region is located inside the base B. As shown in FIG. The states shown in the first and second diagrams from the top of FIG. 5 are states in which the stop switch SW1 is off. As shown in the second diagram from the top of FIG. 5, with the stop switch SW1 turned off, the operator opens the cover C and presses the button P (white arrow in the second diagram from the top of FIG. 5). line), and as shown in the third diagram from the top of FIG. 5, when the button P is pushed to a predetermined first position, the stop switch SW1 is turned on. When the button P is pushed to a predetermined first position, the position of the button P is maintained at the first position, and the stop switch SW1 is maintained on. When the operator pushes the button P to a second position that is deeper than the first position while the button P is at a predetermined first position (the white 5, the position of the button P returns to its original position, and the stop switch SW1 returns to its off state. When the cover C is closed in this state, the state shown in the first figure from the top of FIG. 5 is obtained.

When the seismic intensity measurement device 520 reports the occurrence of an earthquake with a seismic intensity of 6, the operator opens the cover C of the stop switch SW1 to turn on the stop switch SW1. Similarly, when the seismic intensity measurement device 520 reports the occurrence of earthquakes of seismic intensity 5 and 4, the operator opens the cover C of the stop switches SW2 and SW3 to turn on the stop switches SW2 and SW3. to After that, when the earthquake subsides and it becomes possible to restart the operation of the equipment based on the results of inspections of the equipment, etc., the operator turns off the stop switch SW1, SW2, or SW3, which has been turned on. back to
Here, an example in which the stop switches SW1, SW2, and SW3 are push buttons is shown, but the stop switch SW1 is not limited to a push button. The stop switches SW1, SW2, SW3 may be levers, for example.

<<signal generator 512>>
The signal generation unit 512 generates a signal instructing to stop the operation of the equipment, a signal instructing the restoration of the operation of the equipment, a signal instructing to start the watering equipment 400, and a signal instructing to stop the operation of the watering equipment 400. , to generate In the following description, the signal for instructing to stop the operation of the facility will be referred to as an operation stop instruction signal as necessary. The content of the operation stop instruction signal is determined according to the stop switch SW1, SW2, or SW3 that has been determined to be on by the operation input determination unit 511 . A signal for instructing restoration of operation of equipment is referred to as an operation restoration instruction signal as necessary. The content of the operation return instruction signal is determined according to the stop switch SW1, SW2, or SW3 that has been determined by the operation input determination unit 511 to be returned from the ON state to the OFF state. A signal for instructing the activation of the watering equipment 400 will be referred to as a watering activation instruction signal as necessary. A signal that instructs to stop the operation of the sprinkler system 400 is referred to as a watering stop instruction signal as necessary.

In this embodiment, when it is determined that the stop switch SW1 is turned on, the signal generation unit 512 detects the predetermined facilities included in the first area 100, the second area 200, and the third area 300. to generate an operation stop instruction signal indicating to stop the operation of the At this time, the signal generator 512 generates a watering start instruction signal.
When it is determined that the stop switch SW2 has been turned on, the signal generator 512 generates an operation stop instruction signal indicating that the operation of the predetermined equipment included in the second area 200 should be stopped.
When it is determined that the stop switch SW3 is turned on, the signal generator 512 generates an operation stop instruction signal indicating to stop the operation of the predetermined equipment included in the second area 200 and the third area 300. to generate

Further, in the present embodiment, when it is determined that the stop switch SW1 has been turned off from the on state, the signal generator 512 sets the first area 100, the second area 200, and the third area. An operation restoration instruction signal is generated to indicate that the operation of the predetermined equipment included in 300 is to be restored. At this time, the signal generator 512 generates a watering stop instruction signal.
When it is determined that the stop switch SW2 has been turned off from the on state, the signal generation unit 512 generates an operation restoration instruction signal indicating that the operation of the predetermined equipment included in the second area 200 is to be restored. Generate.
When it is determined that the stop switch SW3 has been turned off from the on state, the signal generator 512 instructs the predetermined equipment included in the second area 200 and the third area 300 to resume operation. to generate an operation return instruction signal shown in FIG.

<<signal output unit 513>>
When a signal is generated by the signal generation unit 512, the signal output unit 513 outputs the signal to an output destination according to the signal.
In this embodiment, when the operation stop instruction signal is generated by the signal generation unit 512, the signal output unit 513 outputs the operation stop instruction signal to the control device of the facility whose operation is stopped by the operation stop instruction signal. . In addition, when the signal generator 512 generates the watering start instruction signal, the signal output unit 513 outputs the watering start signal to the emergency power supply equipment of the watering equipment 400 .

Further, when the signal generating section 512 generates the operation restoration instruction signal, the signal output section 513 outputs the operation restoration instruction signal to the control device of the equipment whose operation is to be restored by the operation restoration instruction signal. Further, when the watering stop instruction signal is generated by the signal generating unit 512 , the signal output unit 513 outputs the watering stop signal to the emergency power supply equipment of the watering equipment 400 .

In this embodiment, the signal output unit 513 outputs a signal indicating that the operation stop instruction signal is to stop the operation of the predetermined equipment included in the first area 100, the second area 200, and the third area 300. , the operation stop instruction signal is transmitted to the control device that controls the operation of the predetermined equipment included in the first area 100 , the second area 200 and the third area 300 . When the control device that controls the operation of predetermined equipment included in the first area 100, the second area 200, and the third area 300 receives the operation stop instruction signal, the control device controls the equipment stop the operation of Further, the signal output unit 513 transmits a watering activation instruction signal to the emergency power supply equipment of the watering equipment 400 . The emergency power supply equipment of the watering equipment 400 activates the watering equipment 400 upon receiving the watering activation instruction signal.

The signal output unit 513 also transmits the operation stop instruction signal to the control device that controls the operation of the predetermined equipment included in the second area 200 . Upon receiving the operation stop instruction signal, the control device that controls the operation of the predetermined equipment included in the second area 200 stops the operation of the equipment controlled by the control device.
Further, when the operation stop instruction signal is a signal indicating to stop the operation of the predetermined equipment included in the second area 200 and the third area 300, the signal output unit 513 outputs the second area 200 and the third area 300. The operation stop instruction signal is transmitted to the control device that controls the operation of the predetermined equipment included in the third area 300 . A control device that controls the operation of predetermined equipment included in the second area 200 and the third area 300, upon receiving the operation stop instruction signal, stops the operation of the equipment controlled by the control device.

Further, when the operation restoration instruction signal is a signal indicating that the operation of the predetermined equipment included in the first area 100, the second area 200, and the third area 300 is to be restored, the signal output unit 513 , the first area 100 , the second area 200 , and the third area 300 . When the control device that controls the operation of the predetermined equipment included in the first area 100, the second area 200, and the third area 300 receives the operation return instruction signal, the control device controls the equipment to restore operation. At this time, the signal output unit 513 transmits the watering stop instruction signal to the emergency power supply equipment of the watering equipment 400 . The emergency power supply equipment of the watering equipment 400 stops the watering equipment 400 upon receiving the watering stop instruction signal.

Further, when the operation restoration instruction signal is a signal indicating that the operation of the predetermined equipment included in the second area 200 is to be restored, the signal output unit 513 causes the predetermined equipment included in the second area 200 to resume operation. The operation return instruction signal is transmitted to the control device that controls the operation. The control device that controls the operation of the predetermined equipment included in the second area 200, upon receiving the operation restoration instruction signal, restores the operation of the equipment controlled by the control device.
Further, when the operation restoration instruction signal is a signal indicating that the operation of the predetermined equipment included in the second area 200 and the third area 300 is to be restored, the signal output unit 513 outputs the second area 200 and the third area 300. The operation return instruction signal is transmitted to the control device that controls the operation of the predetermined equipment included in the third area 300 . A control device that controls the operation of predetermined equipment included in the second area 200 and the third area 300, upon receiving the operation return instruction signal, restores the operation of the equipment controlled by the control device.
As described above, in this embodiment, an example of a facility operation stop system is realized by using the management device 510 and the seismic intensity measurement device 520 .

<Flowchart>
Next, an example of a facility operation stop method using the management device 510 and the seismic intensity measurement device 520 will be described with reference to the flowchart of FIG.
First, in step S601, the operation input determination unit 511 waits until the operator operates the stop switch SW1, SW2, or SW3. If the stop switch SW1, SW2, or SW3 is operated by the operator, the process proceeds to step S602.

When the process proceeds to step S602, the operation input determination unit 511 determines whether or not the stop switch SW1, SW2, or SW3 is turned on.
Next, in step S603, the operation input determination unit 511 determines whether or not the stop switch SW1 is turned on. If the stop switch SW1 is turned on as a result of this determination, the process proceeds to step S604.

When the process proceeds to step S604, the signal generation unit 512 generates an operation stop instruction signal indicating to stop operation of predetermined facilities included in the first area 100, the second area 200, and the third area 300. and a watering start instruction signal. Then, the signal output unit 513 transmits the operation stop instruction signal to the control device that controls the operation of the predetermined equipment included in the first area 100 , the second area 200 and the third area 300 . When the control device that controls the operation of predetermined equipment included in the first area 100, the second area 200, and the third area 300 receives the operation stop instruction signal, the control device controls the equipment stop the operation of Further, the signal output unit 513 transmits a watering activation instruction signal to the emergency power supply equipment of the watering equipment 400 . The emergency power supply equipment of the watering equipment 400 activates the watering equipment 400 upon receiving the watering activation instruction signal.
Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, for example, when an earthquake with a seismic intensity of 6 occurs and the stop switch SW1 is turned on, the first condition is established, and the signal generation unit 512 and the signal output unit 513 perform step By executing the process of S604, an example of the first stop instructing means/step and start instructing means is realized. Thus, in the present embodiment, for example, turning on the stop switch SW1 corresponds to performing a predetermined operation on the operating means.

If it is determined in step S603 that the stop switch SW1 is not turned on, the process proceeds to step S605. When the process proceeds to step S605, the operation input determination unit 511 determines whether or not the stop switch SW3 is turned on. If the stop switch SW3 is turned on as a result of this determination, the process proceeds to step S606.

When the process proceeds to step S<b>606 , the signal generation unit 512 generates an operation stop instruction signal indicating to stop operation of predetermined equipment included in the second area 200 and the third area 300 . Then, the signal output unit 513 transmits the operation stop instruction signal to the control device that controls the operation of the predetermined equipment included in the second area 200 and the third area 300 . A control device that controls the operation of predetermined equipment included in the second area 200 and the third area 300, upon receiving the operation stop instruction signal, stops the operation of the equipment controlled by the control device. Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, for example, when an earthquake with a seismic intensity of 5 occurs and the stop switch SW3 is turned on, the third condition is established, and the signal generation unit 512 and the signal output unit 513 perform step An example of the third stop instructing means is realized by executing the process of S606. As described above, in the present embodiment, for example, turning on the stop switch SW3 corresponds to performing a predetermined operation on the operating means.

If it is determined in step S605 that the stop switch SW3 is not turned on, the process proceeds to step S607. When the process proceeds to step S607, in this case, the stop switch SW2 is on. Therefore, in step S<b>607 , the signal generation unit 512 generates an operation stop instruction signal indicating to stop operation of predetermined equipment included in the second area 200 . Then, the signal output unit 513 transmits the operation stop instruction signal to the control device that controls the operation of the predetermined equipment included in the second area 200 . Upon receiving the operation stop instruction signal, the control device that controls the operation of the predetermined equipment included in the second area 200 stops the operation of the equipment controlled by the control device. Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, for example, when an earthquake with a seismic intensity of 4 occurs and the stop switch SW2 is turned on, the second condition is established, and the signal generation unit 512 and the signal output unit 513 perform step An example of the second stop instructing means/step is realized by executing the process of S607. Thus, in this embodiment, for example, turning on the stop switch SW2 corresponds to performing a predetermined operation on the operating means.

In step S602, if the stop switch SW1, SW2, or SW3 is not turned on, the process proceeds to step S608. When the process proceeds to step S608, the operation input determination unit 511 determines whether the stop switch SW1, SW2, or SW3 has returned from the ON state to the OFF state. As a result of this determination, if the stop switch SW1, SW2, or SW3 has not returned from the ON state to the OFF state, the process returns to step S601.

On the other hand, if the stop switch SW1, SW2, or SW3 returns from the ON state to the OFF state, the process proceeds to step S609. When the process proceeds to step S609, the operation input determination unit 511 determines whether the stop switch SW1 has returned from the ON state to the OFF state. As a result of this determination, if the stop switch SW1 returns from the ON state to the OFF state, the process proceeds to step S610.

When the process proceeds to step S610, the signal generation unit 512 generates an operation restoration instruction signal indicating that the operation of predetermined facilities included in the first area 100, the second area 200, and the third area 300 is to be restored. and a watering stop instruction signal. The signal output unit 513 transmits the operation return instruction signal to the control device that controls the operation of the predetermined equipment included in the first area 100 , the second area 200 and the third area 300 . When the control device that controls the operation of the predetermined equipment included in the first area 100, the second area 200, and the third area 300 receives the operation return instruction signal, the control device controls the equipment to restore operation. The signal output unit 513 also transmits a watering stop instruction signal to the emergency power supply equipment of the watering equipment 400 . The emergency power supply equipment of the watering equipment 400 stops the watering equipment 400 upon receiving the watering stop instruction signal. Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, an example of the return instructing means is realized by executing the processing of step S610 by the signal generation unit 512 and the signal output unit 513, for example. Further, for example, turning on the stop switch SW1 corresponds to performing a predetermined first operation on the operation means, and the stop switch SW1 can be returned from the on state to the off state. , corresponds to performing a predetermined second operation on the operating means on which the predetermined first operation has been performed.

If it is determined in step S609 that the stop switch SW1 has not returned from the ON state to the OFF state, the process proceeds to step S611. When the process proceeds to step S611, the operation input determination unit 511 determines whether the stop switch SW3 has returned from the ON state to the OFF state. As a result of this determination, if the stop switch SW3 has returned from the ON state to the OFF state, the process proceeds to step S612.

When the process proceeds to step S<b>612 , the signal generation unit 512 generates an operation restoration instruction signal indicating that the operation of predetermined equipment included in the second area 200 and the third area 300 is to be restored. The signal output unit 513 transmits the operation return instruction signal to the control device that controls the operation of the predetermined equipment included in the second area 200 and the third area 300 . A control device that controls the operation of predetermined equipment included in the second area 200 and the third area 300, upon receiving the operation return instruction signal, restores the operation of the equipment controlled by the control device. Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, an example of the return instructing means is realized by executing the processing of step S612 by the signal generation unit 512 and the signal output unit 513, for example. Further, for example, turning on the stop switch SW3 corresponds to performing a predetermined first operation on the operating means, and the stop switch SW3 can be returned from the on state to the off state. , corresponds to performing a predetermined second operation on the operating means on which the predetermined first operation has been performed.

If it is determined in step S609 that the stop switch SW3 has not returned from the ON state to the OFF state, the process proceeds to step S613. In this case, the stop switch SW2 returns from the ON state to the OFF state. Therefore, in step S613, the signal generation unit 512 generates an operation restoration instruction signal indicating that the operation of the predetermined equipment included in the second area 200 is to be restored. The signal output unit 513 transmits the operation return instruction signal to the control device that controls the operation of the predetermined equipment included in the second area 200 . The control device that controls the operation of the predetermined equipment included in the second area 200, upon receiving the operation restoration instruction signal, restores the operation of the equipment controlled by the control device. Then, the processing according to the flowchart of FIG. 6 ends.

As described above, in the present embodiment, an example of a return instructing means is realized by executing the processing of step S613 by the signal generation unit 512 and the signal output unit 513, for example. Further, for example, turning on the stop switch SW2 corresponds to performing a predetermined first operation on the operating means, and the stop switch SW2 can be returned from the on state to the off state. , corresponds to performing a predetermined second operation on the operating means on which the predetermined first operation has been performed.

<Summary>
As described above, in this embodiment, the operation of the predetermined equipment in the sintering plant P is stopped for each area. The first area 100 includes a belt conveyor 110 and predetermined equipment arranged downstream of the belt conveyor 110 . The second area 200 includes predetermined equipment arranged upstream of the belt conveyor 110 . When an earthquake with a seismic intensity of 6 occurs and the operation of the predetermined equipment included in the first area 100 is stopped, the operation of the predetermined equipment included in the second area 200 is also stopped. When an earthquake with a seismic intensity of 4 or 5 occurs and the operation of the predetermined equipment included in the second area 200 is to be stopped, without stopping the operation of the predetermined equipment included in the first area 100, the first 2 stop the operation of the predetermined equipment included in the area 200 . Therefore, the risk of ignition of the belt conveyor 110 can be reduced by stopping the belt conveyor 110 in the state which the sintered ore was mounted. Therefore, the operation of the equipment of the sintering plant P can be appropriately stopped.

Moreover, in this embodiment, in addition to the first area 100 and the second area 200, a third area 300 is provided. In this case, the second area 200 includes a raw material tank 210 and equipment through which the sintering raw material discharged from the raw material tank 210 passes. The third area 300 includes predetermined equipment arranged upstream of the belt conveyor 110 and not included in either the first area 100 or the second area 200 . When an earthquake with a seismic intensity of 5 occurs and the operation of the predetermined equipment included in the third area 300 is stopped, the operation of the predetermined equipment included in the second area 200 is also stopped. In this case, the operation of the predetermined equipment included in the first area 100 is not stopped. Predetermined facilities included in the third area 300 are less likely to cause problems even if an earthquake of seismic intensity 4 occurs. Therefore, it is possible to reduce the restoration work by suppressing the frequency of stopping the operation of the predetermined facilities included in the third area 300, and It is possible to suppress the occurrence of damage caused by not stopping the operation of the equipment. For example, generation of red smoke from the chimney 700 can be suppressed by keeping the dust collector 310 and the blower 320 in operation.

Further, in the present embodiment, when stopping the operation of predetermined equipment included in the first area 100, the second area 200, and the third area 300, the emergency power supply equipment of the sprinkler equipment 400 is activated. , the belt conveyor 110 is sprinkled with water from above. Therefore, even if an earthquake with a seismic intensity of 6 occurs and the operation of the belt conveyor 110 is stopped, the risk of the belt conveyor 110 igniting can be reduced.
Further, in this embodiment, the seismic intensity is measured by the seismic intensity measuring device 520 arranged in the control room 500 in the sintering plant P, and the operator operates the stop switch SW1, SW2, or SW3 based on the seismic intensity. do. Therefore, it is possible to obtain seismic intensity information without waiting for the earthquake early warning data distributed from the Meteorological Agency, and to stop the operation of the facility based on the accurate seismic intensity at the sintering plant P.

Further, in this embodiment, the operation of the facility is stopped by the operator's operation of the stop switch SW1, SW2, or SW3. Therefore, it is possible to prevent equipment from being stopped due to malfunction of the seismic intensity measuring device 520 or erroneous detection due to noise or the like. Further, in this embodiment, a cover C is provided for the stop switch SW1, SW2, or SW3. Therefore, erroneous operations by the operator can be suppressed.
Further, in this embodiment, operation of the facility is restored by operating the stop switch SW1, SW2, or SW3. Therefore, it is possible to simplify the operation for instructing the restoration of the operation of the facility.

<Modification>
<<First Modification>>
In this embodiment, when an earthquake with a seismic intensity of 6 occurs, the operation of predetermined facilities included in the first area 100, the second area 200, and the third area 300 is stopped, and an earthquake with a seismic intensity of 5 occurs. , the operation of predetermined equipment included in the second area 200 and the third area 300 is stopped, and when an earthquake with a seismic intensity of 4 occurs, the operation of the predetermined equipment included in the second area 200 is stopped. The case of stopping is explained as an example. However, the second area 200 and the third area 300 include the conditions for stopping the operation of the predetermined equipment included in the first area 100, the second area 200, and the third area 300. This is a condition indicating that the equipment is more affected by the shaking caused by the earthquake than the condition for stopping the operation of the predetermined equipment, and the operation of the predetermined equipment included in the second area 200 and the third area 300 is stopped. If the condition to stop the operation of the predetermined equipment included in the second area 200 is a condition indicating that the equipment is more affected by the shaking due to the earthquake, it is necessary to do so. no. Depending on the ground, topography, etc. of the sintering plant P, the set value of the seismic intensity described above may vary. For example, instead of seismic intensities 4, 5, and 6 described above, seismic intensities 3, 4, and 5, or seismic intensities 5, 6, and 7 can be employed. In this embodiment, seismic intensity 5 Upper and 5 Lower are grouped into seismic intensity 5, and seismic intensity 6 Lower and 6 Upper are grouped into seismic intensity 6. 5, and a seismic intensity of 6 refers to a seismic intensity of 6 upper or a seismic intensity of 6 lower), but these may be distinguished.
Also, for example, if the amplitude, period, and duration of the shaking are different, the equipment will be affected differently by the shaking caused by the earthquake. Therefore, instead of seismic intensity, for example, a condition using at least one of shaking amplitude, period, and duration may be employed.

<<Second Modification>>
It is preferable to provide the third area 300 in addition to the first area 100 and the second area 200 as in the present embodiment. The predetermined facility included in the second area 200 may be the predetermined facility included in the second area 200 .

<<Third Modification>>
In this embodiment, when stopping the supply of power to predetermined equipment included in the first area 100, the emergency power supply equipment is activated and the watering equipment 400 is automatically operated. explained with an example. However, this need not necessarily be the case. For example, the water sprinkler 400 may be operated manually or automatically by an operator using the power supply equipment of the sintering plant P without using the emergency power supply equipment.
Also, the timing of operating the sprinkler facility 400 is when the operation of predetermined facilities included in the first area 100, the second area 200, and the third area 300 is stopped (in this embodiment, an earthquake with a seismic intensity of 6). occurs). For example, from the viewpoint of safety, when stopping the operation of predetermined equipment included in the second area 200 and the third area 300 (in this embodiment, when an earthquake with a seismic intensity of 5 occurs), or when the second area When stopping the operation of the predetermined equipment included in 200 (when an earthquake with a seismic intensity of 4 occurs in this embodiment), the sprinkler equipment 400 may be operated. Also, as described above, if the sprinkler equipment 400 is started, it is preferable because the risk of ignition of the belt conveyor 110 can be further reduced, but for example, it is important to reduce the cost of the equipment operation stop system. In some cases, the sprinkler equipment 400 may not be operated.

<<Fourth Modification>>
In this embodiment, in consideration of malfunction of the seismic intensity measuring device 520 and erroneous detection due to noise, etc., the case where the operation of the facility is stopped by the operation of the stop switch SW1, SW2, or SW3 by the operator will be described as an example. did. However, for example, when it is important to prevent the operator from selecting the stop switch SW1, SW2, or SW3 incorrectly, or from forgetting to operate the stop switch SW1, SW2, or SW3, the management device 510 inputs the measured value of the seismic intensity measuring device 520, determines the seismic intensity according to the input measured value, determines the facility (area) to stop operation according to the determined seismic intensity, and stops the determined facility. An operation stop instruction signal may be generated and output.

<<Other Modifications>>
Among the embodiments of the present invention described above, the functions of the management device 510 can be implemented by a computer executing a program. A computer-readable recording medium recording the program and a computer program product such as the program can also be applied as embodiments of the present invention. Examples of recording media that can be used include flexible disks, hard disks, optical disks, magneto-optical disks, CD-ROMs, magnetic tapes, nonvolatile memory cards, and ROMs.
In addition, the embodiments of the present invention described above are merely examples of specific implementations of the present invention, and the technical scope of the present invention should not be construed to be limited by these. It is. That is, the present invention can be embodied in various forms without departing from its technical concept or main features.

100: first area, 110: belt conveyor, 120: sieve equipment, 130: belt conveyor, 140: tripper equipment, 200: second area, 210: raw material tank, 220: belt conveyor, 230: granulation equipment, 240: Belt conveyor, 250: Sintering machine, 260: Crusher, 270: Cooling machine, 280: Boiler equipment: 300: Third area, 310: Dust collector, 320: Blower, 400: Sprinkling equipment, 500: Management Room, 510: Management device, 520: Seismic intensity measuring device

Claims (15)

An equipment operation stop system for stopping the operation of equipment in a sintering factory when an earthquake occurs,
Having stop instruction means for instructing to stop operation of predetermined equipment in the sintering plant,
The stop instruction means stops operation of predetermined equipment included in the first area of the sintering plant and predetermined equipment included in the second area of the sintering plant when a first condition is satisfied. a first stop instruction means for instructing to stop;
a second stop instruction means for instructing to stop the operation of the predetermined equipment included in the second area when a second condition is satisfied;
Shaking measuring means for measuring shaking caused by an earthquake in the sintering factory;
has
Predetermined equipment included in the first area includes a belt conveyor that conveys the sintered ore produced by the sintering machine to a sieve, and predetermined equipment arranged downstream of the belt conveyor,
The predetermined equipment included in the second area includes predetermined equipment arranged upstream of the belt conveyor,
The first condition and the second condition are conditions that indicate the influence of earthquake shaking on equipment,
The first condition is a condition indicating that the equipment is more affected by shaking due to an earthquake than the second condition,
The condition indicating the effect of the shaking caused by the earthquake on the facility is a condition determined by the shaking caused by the earthquake measured by the shaking measuring means,
The fact that the facility is greatly affected by the shaking caused by the earthquake means that the shaking caused by the earthquake measured by the shaking measuring means is large,
The equipment operation stop system, wherein the stop instruction means does not issue an instruction to stop the operation of the predetermined equipment included in the first area when the second condition is satisfied. 2. The equipment operation stop system according to claim 1, wherein whether or not said first condition and said second condition are satisfied is determined based on the shaking measured by said shaking measuring means. . The stop instruction means instructs to stop operation of predetermined equipment included in the third area of the sintering plant and predetermined equipment included in the second area when a third condition is satisfied. further comprising a third stop instructing means for
The first stop instruction means stops the operation of predetermined equipment included in the first area, predetermined equipment included in the second area, and predetermined equipment included in the third area, giving an instruction to stop when the first condition is satisfied;
The predetermined equipment included in the second area includes a raw material tank and equipment through which the sintering raw material discharged from the raw material tank passes,
The predetermined equipment included in the third area is a predetermined equipment arranged upstream of the belt conveyor, and is equipment for sucking exhaust gas generated in the sintering machine and discharging it into a chimney. is a facility that includes
The third condition is a condition that indicates the impact of the shaking caused by an earthquake on the equipment,
The third condition indicates that the equipment is more affected by the shaking caused by the earthquake than the second condition, and the equipment is less affected by the shaking due to the earthquake than the first condition. is a condition indicating
The stop instruction means does not instruct to stop the operation of the predetermined equipment included in the first area when the third condition is satisfied, and when the second condition is satisfied 3. The equipment operation stop system according to claim 1 or 2, wherein no instruction to stop the operation of predetermined equipment included in said third area is issued . 3. Whether or not said first condition, said second condition, and said third condition are satisfied is determined based on the shake measured by said shake measuring means. Equipment operation stop system described in . 5. The equipment operation stop system according to claim 3 or 4 , wherein the equipment for sucking the exhaust gas generated in the sintering machine and discharging it to a chimney includes a dust collector and a blower. The shaking measuring means measures a seismic intensity,
The facility operation according to any one of claims 3 to 5 , wherein the establishment of the third condition is that the seismic intensity measured by the shaking measuring means is a seismic intensity of 5 upper or a seismic intensity of 5 lower. Stop system. The predetermined equipment included in the second area includes a raw material tank, a granulating equipment for granulating the sintering raw material, a sintering machine for producing sintered ore from the sintering raw material, and the sintering machine. The equipment according to any one of claims 1 to 6 , comprising a crusher for crushing the produced sintered ore and a cooler for cooling the sintered ore crushed by the crusher. outage system. 1 to 1, further comprising start instruction means for instructing start-up of equipment for supplying a cooling medium to the belt conveyor in response to a stop instruction from a predetermined stop instruction means of the stop instruction means. 8. The equipment operation stop system according to any one of 7 . 9. The facility operation stop system according to claim 8 , wherein said predetermined stop instruction means is said first stop instruction means. The shaking measuring means measures a seismic intensity,
The condition indicating the impact of the shaking caused by the earthquake on the facility is a condition determined by the seismic intensity measured by the shaking measuring means,
10. The facility operation stop system according to any one of claims 1 to 9 , wherein the fact that the facility is greatly affected by the shaking caused by the earthquake is that the seismic intensity is large. Satisfaction of the first condition means that the seismic intensity measured by the shaking measuring means is a seismic intensity of upper 6 or a seismic intensity of lower 6;
11. The facility operation stop system according to claim 10 , wherein the establishment of said second condition is when the seismic intensity measured by said shake measuring means is seismic intensity 4. It further has an operation means for performing an operation according to shaking caused by an earthquake,
12. The condition according to any one of claims 1 to 11 , wherein the condition for performing the instruction by the stop instruction means includes performing a predetermined operation on the operation means according to shaking caused by an earthquake. The equipment operation stop system according to item 1. 12. The method according to any one of claims 1 to 12 , further comprising a return instruction means for instructing the restoration of operation of the predetermined equipment of the sintering plant whose operation has been instructed to be stopped by the stop instruction means. Equipment operation stop system described in . It further has an operation means for performing an operation according to shaking caused by an earthquake,
The conditions for performing the instruction by the stop instruction means include performing a predetermined first operation on the operation means in response to shaking caused by an earthquake,
13. Said instruction by said return instruction means is executed when a predetermined second operation is performed on said operation means on which said predetermined first operation has been performed. Equipment operation stop system described in . A facility operation stop method for stopping operation of facilities in a sintering factory when an earthquake occurs,
Having a stop instruction step of instructing to stop operation of predetermined equipment in the sintering plant,
The stop instruction step stops the operation of predetermined equipment included in the first area of the sintering plant and predetermined equipment included in the second area of the sintering plant when a first condition is satisfied. a first stop instruction step of instructing to stop;
a second stop instruction step of instructing to stop operation of predetermined equipment included in the second area when a second condition is satisfied;
Predetermined equipment included in the first area includes a belt conveyor that conveys the sintered ore produced by the sintering machine to a sieve, and predetermined equipment arranged downstream of the belt conveyor,
The predetermined equipment included in the second area includes predetermined equipment arranged upstream of the belt conveyor,
The first condition and the second condition are conditions that indicate the influence of earthquake shaking on equipment,
The first condition is a condition indicating that the equipment is more affected by shaking due to an earthquake than the second condition,
The condition indicating the influence of the shaking caused by the earthquake on the equipment is a condition determined by the shaking caused by the earthquake measured by a shaking measuring means for measuring the shaking caused by the earthquake in the sintering plant,
The fact that the facility is greatly affected by the shaking caused by the earthquake means that the shaking caused by the earthquake measured by the shaking measuring means is large,
The equipment operation stoppage method, wherein the stop instruction step does not issue an instruction to stop the operation of the predetermined equipment included in the first area when the second condition is satisfied.

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