JPS6257210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace temperature measuring device for a coke oven having a large number of carbonization chambers.

Generally, a coke oven is formed of a furnace group in which independent carbonization chambers and combustion chambers are arranged alternately.

On the other hand, the carbonization time from when the coal is charged into the carbonization chamber until it is fired is influenced by external conditions such as the moisture content and particle size of the charged coal, but most of it is influenced by the temperature of the combustion chamber. It is determined accordingly. Therefore, temperature measurement in the combustion chamber is one of the important requirements for controlling coke manufacturing conditions.

Conventionally, combustion chamber temperatures have been measured manually using optical pyrometers, and have to be measured over a relatively short period of time. Moreover, this temperature measurement method required a considerable amount of time even for an experienced person to measure one location, making it difficult to measure all combustion chambers in a short period of time, and there were drawbacks such as large human errors. .

In addition, temperature measurement methods that do not use an optical pyrometer include a method of measuring by installing a thermocouple in the upper space of the combustion chamber, or a method of measuring the temperature by installing a thermocouple in the upper space of the combustion chamber, or a method of measuring the temperature by installing a thermocouple inside the refractory on the top of the partition wall between adjacent combustion chambers or on the top of the hairpin. There is a method of measuring by installing a thermocouple. However, with the former method, the measured value pulsates due to various complex heat transfer mechanisms, as well as disturbances in the draft and gas flow velocity, making it difficult to grasp the value as a representative value of the furnace temperature. There is. In addition, the latter method measures the temperature inside the refractory, so it has the disadvantage that the measured value lags behind the temperature change inside the combustion chamber. This is not a satisfactory method of measurement.

The present invention is for measuring furnace temperature while running a measuring car equipped with a thermometer using heat radiation over coke ovens, and a battery mounted on the measuring car for running the measuring car. An object of the present invention is to provide a coke oven oven temperature measuring device that is automatically charged.

The furnace temperature measuring device of the present invention automatically closes the lid of the nozzle installed in the combustion chamber while running a measuring car equipped with a thermometer on a rail installed in the direction of the furnace above the coke oven. The furnace temperature is measured by opening the furnace and detecting light from the bottom of the furnace through the Furyu nozzle. In such a furnace temperature measuring device, a battery mounted on the measuring vehicle is used as a power source for driving the measuring vehicle. Therefore, it is necessary to charge this battery after completing the measurement. It is not preferable to manually charge the battery because it is inefficient and creates an unfavorable working environment above the coke oven.

Therefore, in the present invention, after measuring the furnace temperature, etc., the battery is automatically electrically connected to the charging device to perform charging, and the measurement vehicle is stopped and the electrical connection between the battery and the charging device is confirmed. Charging is started later, so that charging can be performed safely and reliably.

The details of the coke oven furnace temperature measuring device of the present invention will be described below. Figures 1 to 3 are diagrams showing, for example, the vicinity of the measuring car hangar, which is installed on the furnace in a part other than the carbonization chamber and combustion chamber at the end of the furnace group, and inside which is equipped with a charging device, etc. be. In these figures, 1 is a measuring car, 2 is a thermometer that uses heat radiation such as a monochromatic thermometer, a two-color thermometer, a three-color thermometer, a radiation thermometer, an infrared thermometer, etc. equipped on the measuring car, 3, 3 ' is a lid opening/closing member of the Friyu nozzle, 4, 4' is a lid closing member of the Friyu nozzle (details of the lid opening/closing members 3, 3', and lid closing members 4, 4' will be described later), and 5 is mounted on the measurement vehicle 1. A battery 6 is a pantograph that electrically connects the battery and the charging device by contacting a trolley to be described later. Reference numeral 7 denotes a first limit switch, and when this switch is turned on by a limit switch operation piece 7a installed in the hangar, it stops the measuring car and also connects the electricity between the battery 5 and the pantograph 6, which are normally cut off. It is configured so that a physical connection can be made. Also, 11 is a hangar,
12 is a protective fence, 13 is a charging device, and 14 is a trolley connected to the charging device 13 by a power cable 15, and is connected to the pantograph 6 when the measurement vehicle 1 enters the hangar 11. 16 is a second limit switch that issues a signal for charging and watering when turned on by an operating piece 16a provided on the measuring wheel 1; 17 is a second limit switch 1;
6 is a sprinkler control panel operated, and 18 is a sprinkler.

As will be described in detail later, when a measuring car that measures the temperature through the Furyu nozzle while traveling along the rail 10 laid on the furnace as shown in FIG. 1
The limit switch 7 is turned on by the operating piece 7a, and the measuring wheel 1 stops. At the same time, the battery 5 and pantograph 6 are electrically connected.
Further, the pantograph 6 and the trolley 14 are connected. As a result, current from the battery 5 flows to the charging device 13 through the pantograph 6, the trolley 14, and the power cable 15. Although not shown,
The charging device is equipped with a circuit that detects this current. On the other hand, the second limit switch 16 is turned on by an operating piece 16a provided on the measuring wheel 1. The circuit within the charging device is switched to charging by the signal from the second limit switch 16 and the detection of the current from the battery 5.
Thereby, the charging device 13 is connected to the power cable 1.
5, the battery 5 is charged through the trolley 14 and the pantograph 6. Also, in response to a signal from the second limit switch 16, a water sprinkler control panel 17 sprinkles water from a water sprinkler 18 onto the measuring wheel 1 to cool the battery. After a predetermined period of time has elapsed since the start of charging and watering, charging and watering are stopped almost simultaneously by the action of a timer installed in the charging device 13 and the watering device control panel 17. The measurement vehicle whose battery has been charged in this manner is run along the rail 10 again to measure the furnace temperature. Furthermore, when it is necessary to measure the temperature before charging is completed and the measuring vehicle 1 is to be driven, the measuring vehicle 1 may be started by an external command. In that case the first and second
Both limit switches are turned off, charging and watering are stopped, and the connection between the pantograph and battery is also severed.

As mentioned above, when the measuring car 1 enters the warehouse, it is automatically stopped by the action of the first limit switch 7, and automatically stopped by the signal from the second limit switch 16 and the detection of the current from the battery 5. Charging is performed. Moreover, the charging process is performed not only by the limit switch, but also by detecting the current flowing from the battery through the same path as the current path from the charging device to the battery during charging, making it safe. Reliable charging is performed. Furthermore, the first limit switch 7 confirms that the measuring car 1 has stopped, and the electric connection between the battery and the pantograph is established before power is applied, so that the charging device 13 is activated while the measuring car 1 is running. Moreover, since the circuit between the battery 5 and the pantograph 6 is open, no accident or breakdown will occur due to touching the trolley 14 or the pantograph.

Next, the measurement of temperature by driving the measuring vehicle will be explained. In a coke oven, generally, half of the burners in the combustion chamber that are connected in the longitudinal direction of the combustion chamber burn, and after a predetermined period of time, the other half starts burning and the combustion chamber that was burning until then stops. Combustion is performed by alternating these steps. Furthermore, if the lid of the Furyu nozzle is opened during combustion, the temperature of the flame inside the combustion chamber must be measured, making it impossible to measure the desired temperature of the bottom brick surface. Further, the temperature of the combustion chamber is low at the extruder side, increases with a certain temperature gradient toward the exit side from the kiln, and becomes the highest at the exit side from the kiln. The average temperature of the combustion chamber is at the center in the furnace length direction. Therefore, measuring the indoor temperature from the Furyu nozzle closest to the center on the side where combustion is stopped will not be affected by the combustion in the room, and will also measure the average temperature of the combustion chamber. desirable for this reason.
Therefore, it is best to measure the row of Furyu nozzles that are closest to the center and lined up in the direction of the furnace cluster when combustion has stopped.

There are typically two types of structures for coke oven heating flame channels. One of them is a structural style typified by an Otto furnace. For example, in FIG. 4, the odd-numbered combustion chambers 21, 23, .
3a... burns first, and even-numbered combustion chambers 22, 2
In 4..., the kiln exit side 22b, 24b... is burned, and the above combustion is stopped after a certain period of time (for example, 20 minutes), and the opposite side, that is, the odd numbered side is burned on the kiln exit side, and the even numbered side is burned on the extruder side. In other words, if we consider only the two rows of Furyu nozzles closest to the center of the combustion chamber among the halves divided from the center of each combustion chamber, the burning parts will be staggered as shown by broken lines A and B in Figure 4. . For this reason, if you want to continuously measure the temperature of each combustion chamber in the direction of the furnace using a thermometer installed on a traveling vehicle, in the part where combustion has stopped, follow the broken line A or B in Figure 4. It needs to run. However, it is practically difficult to open/close the lid and perform measurements while the vehicle is running in this manner without stopping the vehicle.

In the case of an Otto furnace, in the case of an Otto furnace, every other Furyu nozzle lined up on the broken line C or D in Fig. 4 is opened, the lid is opened, the temperature is measured, and the lid is closed in the furnace direction. When the is converted, every other remaining Furyu nozzle is measured in the opposite direction. That is, in FIG. 4, measurements are taken on the odd-numbered combustion chambers starting from the combustion chamber 21 along the broken line C, and when the other end is reached, the measurement is made on the even-numbered combustion chambers by moving in the opposite direction. For this reason, in the above example, the lids of the even-numbered combustion chambers are not opened on the outward journey, and the lids of the odd-numbered combustion chambers are not opened on the return journey.

Next, in the structural style typified by the Karl Steel furnace, the same side of each combustion chamber (for example, the extruder side 21a, 22a, ...) is first burned, and after a predetermined time (for example, 20 minutes), the opposite side (the kiln side) is burned. Output side 21
b, 22b...) are combusted alternately at regular intervals. Therefore, in the case of this type of furnace, it is sufficient to sequentially open the lids, measure, and close the lids of all the Furyu nozzles in the same direction on the side where combustion is stopped.

As mentioned above, measurements in the furnace group direction vary depending on the type of furnace, and in the case of an Otto furnace, measurements must be made every other time. In the present invention, measurements can be made in any of the above cases as described in the following embodiments.

FIGS. 5 and 6 are views showing only the measurement vehicle, with FIG. 5 being a side view and FIG. 6 being a plan view. These figures are mainly for explaining the opening and closing of the lid and the temperature measurement through the flue nozzle, and therefore the battery, limit switch, etc. are omitted. The lid opening/closing members 3, 3' shown in these figures are plate-shaped as shown in FIG.
It is supported horizontally by a′. The lid closing members 4, 4' have a structure as shown in FIG. 8, are supported by support plates 4a, 4a', and can only rotate in the direction shown by the arrow in FIG.

9 and 10 are diagrams showing the lid of the Furyu nozzle used in the present invention, with FIG. 9 being a plan view and FIG. 10 being a side view. In these figures, 40 is the cylindrical opening of the Friyu nozzle, 41 is the lid, 42 is a bearing part whose one end is fixed to the side surface of the cylindrical opening 40 of the Friyu nozzle and holds the shaft 43, and 44 is the shaft 43.
45 is an arm fixed to one end of the shaft 43; 46 is a lever connected to the arm 45 by a shaft 47; the lid opening/closing plate is fixed to the shaft 47; . Further, the arm 45 and the shaft 47 are fixed or rotatable. 48
is a stopper provided on the arm 45.

As shown in FIG. 11, the lever 46 in the above-mentioned lid structure is partially composed of a straight portion 46a and a curved portion 46b. Therefore, when lever 46 is pushed in the direction of arrow G, lever 4
6 tries to rotate around the shaft 47, but the straight portion 46a hits the stopper 48 and pushes it further, so the lever 46 and the arm 45 integrally rotate around the shaft 47.
It rotates with 3. As the shaft 43 rotates, the lid opening/closing part 44, which is fixed to the shaft, rotates around the shaft 43 to open the lid 41. On the other hand lever 46
When pushed from the direction of arrow H, only the lever 46 rotates around the shaft 47.

In the present invention, in the case of an Otto furnace, the lids having the structure described above are installed in alternate directions as shown in Fig. 12, and in the case of a Karl Steel furnace, they are installed in the same direction as shown in Fig. 13. As shown in FIG. 12 or 13, the measuring car 1, which has already been installed, moves along the rails laid on the furnace bed, and sequentially opens only the predetermined furyu nozzles (H → measurement → lid). Repeat closing.

The temperature measurement of the combustion chamber by the furnace temperature measuring device of the present invention will be explained below.

First, we will discuss the case of measuring in the direction of the furnace furnace in an Otto furnace. In FIG. 4, the extruder sides 22a, 24a of the even-numbered combustion chambers 22, 24... are currently burning, while the kiln outlet sides 21b, 23b... of the odd-numbered combustion chambers 21, 23...
Suppose that is burning. In that case, for example, if the measurement is performed on the extruder side, odd-numbered 21a, 23
a... has stopped burning and can be measured. In this case, if the measuring wheel 1 is run from the direction of the combustion chamber 21 as shown in FIG. 12, the measuring wheel first reaches the fuel nozzle of the combustion chamber 21. Here, since this Furyu nozzle is provided with a lid as shown in FIG. 12, the lid opening/closing member 3 provided on the measuring wheel comes into contact with the lever 46 of the lid. In this case the first
In Figure 1, the lid opening/closing member 3 is moved to the lever 46 from the direction of arrow G.
Since you will press , the lid will be opened as already explained. As the measuring wheel 1 continues to travel, the thermometer 2 passes over the Furyu nozzle with its lid open, so that the temperature at the bottom of the furnace is measured. Subsequently, the lid opening/closing member 3' passes the position of the lever 46, but since the lid is already in the open state, there is no change. Furthermore, since the lid closing member 4 comes into contact with the opened lid, this is pushed to close the lid. As the measuring wheel further advances, it reaches the friu nozzle of the combustion chamber 22, and the lid opening/closing member 3 comes into contact with the lever. However, since the even-numbered combustion chambers have their lids facing in the opposite direction to the odd-numbered combustion chambers, the lever must be pushed in the direction of arrow H in FIG. Therefore, only the lever 46 rotates and the lid is not opened. Similarly, the lid opening/closing member 3' also passes through. In this way, the measuring wheel passes over the combustion chamber 22 without opening the lid and therefore without measuring the temperature. For the odd-numbered combustion chambers where combustion has stopped, the lid is opened, the temperature is measured, and the lid is closed, while for the even-numbered combustion chambers where combustion is in progress, the gas simply passes through. .

In this way, travel in the direction of the furnace group is completed, and temperature measurements of all combustion chambers where combustion has stopped are completed. After that, if the measurement car is run in the opposite direction when the combustion location is switched, the operation of opening the lid → measuring temperature → closing the lid will be performed for the even-numbered combustion chamber where combustion has stopped, and the Regarding the odd-numbered combustion chambers, the lids are not opened, closed, or measured at all, and they are simply passed through. In this way, when the measuring wheel returns to the starting position, temperature measurements for all combustion chambers are completed.

Next, the case of a Karl Steel furnace will be explained. In the case of this type of furnace, a lid is attached to the flue nozzle used for measurement as shown in FIG. In other words, the lids are attached to each combustion chamber in the same direction. Then, when the combustion on the side with the lid that can be opened and closed by the measuring wheel according to the present invention is stopped, the measuring wheel may be moved in the direction in which the lid can be opened and closed. For example, in the case of FIG. 13, when the combustion on the extruder side is stopped, the temperature in all combustion chambers can be measured by running it from the combustion chamber 21 side in another direction toward the furnace. Therefore, there is no reciprocating measurement, and after the measurement is completed, the measurement wheel can be returned to the starting position before the start of the next measurement.

In addition to measuring the combustion chamber temperature, the lid may be opened to observe or clean the interior of the chamber. If the measuring vehicle runs while the lid is left open, the lid closing member 4 may come into contact with the open lid. In particular, if the lid closing member 4 pushes the lid 41 in the direction of opening the lid further as shown in FIG. 14, this may cause a malfunction. However, in the device of the present invention, as shown in FIG. 8, the lid closing member 4 can be rotated in the opposite direction to the direction in which the lid is closed, so that the device can run without any trouble. Furthermore, when the measurement vehicle runs, the lid opening/closing member 3' pushes the lever 46 and closes the lid, which closes the lid that has been forgotten to close, thereby preventing temperature measurement from this friyu nozzle. Moreover, there is no possibility that the upper lid closing member 4' will hit the lid.

FIG. 15 shows the structure of another lid used in the device of the present invention. This lid includes a lid attachment member 51 and a shaft 52 fixed to the cylindrical opening 40 of the Friyu nozzle.
It consists of a lid 53 which is rotatably mounted and has a hook 54, and the lid is configured to be closed by a spring 55.

In the Friyu nozzle having a lid with such a structure, the lid can be opened by pushing the hook 54 in the direction of the arrow as the measuring car travels, using contact plates 56 provided before and after the thermometer of the measuring car. . When the lid is opened, a thermometer passes over the Furyu nozzle and measures the furnace temperature. After the measurement, the contact plate 56 is removed from the hook 54, and the lid is automatically closed by the action of the spring 55.

When a lid of this construction is used for an Otto furnace, it is necessary to alternate the mounting direction of the lid for the reasons already explained. In other words, hook 54 is the first
In Figure 5, it is necessary to alternately arrange the items on the left side and the items on the right side. When the measurement vehicle is running, it is necessary to open every other lid using the contact plate 56 and measure the temperature by opening and closing only the lids of combustion chambers where combustion has stopped. Therefore, the contact plate 56 may come into contact with the hook 54 from the opposite direction (the direction opposite to the arrow in FIG. 15), which is undesirable. However, it is sufficient if the abutment plate 56 can be rotated only in the direction opposite to the direction of movement. As a result, when the contact plate 56 comes into contact with the hook 54 in the direction of the arrow in FIG. 15, the hook 54 is pushed to open the lid.
On the other hand, when the contact is made from the direction opposite to the arrow, the hook 54 does not move, so the contact plate rotates and can move forward as it is. Therefore, even if the position of the hooks in the Otto furnace is alternately changed, it can be moved and measured without any problem. Furthermore, the one shown in FIG. 16 differs from the one shown in FIG. 15 only in that the cylindrical opening does not protrude above the furnace, but is otherwise substantially the same. Therefore, the lid can be opened and closed using the abutment plate having the structure described above. In order to open the lid of the structure shown in FIGS. 15 and 16, a roll or an L-shaped arm may be used instead of the plate-shaped contact plate. The lid shown in FIG. 17 has a quartz glass 57 installed at the upper end of the cylindrical opening 40 via a gasket. In this case, since the light from the bottom of the furnace can be measured through the quartz glass 57, a lid removing device is not necessary. However, since it is desirable to clean the surface of the quartz glass during measurement, it is preferable to provide a cleaning device instead of the lid removing device. FIG. 18 shows an example of this cleaning device. This cleaning device has cylinder 6
1, a cleaning section consisting of a piston rod 62 with a brush 63 installed at its tip, a conduit 64 connected to a nozzle 65 via a flexible tube 66, a cylinder 67, and a piston rod 68 with the nozzle 65 attached to its tip.
These are installed near the thermometer 2 of the measuring wheel 1. When the apparatus of the present invention equipped with such a cleaning device is operated as described above, the brush 63 of this cleaning device sweeps the quartz glass surface, and pressurized air from the conduit 64 is directed diagonally toward the quartz glass surface from the nozzle 65. The quartz glass surface can be cleaned and measured by spraying it from the surface.

Furthermore, in the case of a Friyu nozzle covered with quartz glass as shown in Fig. 17, the temperature of both the Friyu nozzle in the burning area and the Friyu nozzle in the area where combustion has stopped is measured through the transparent quartz glass. It turns out. However, since which side of the combustion chamber to burn and to stop combustion is switched at predetermined time intervals under proper control, it is difficult to determine which side of the measured temperature data is during combustion. , it is easy to determine which data are from when combustion is stopped. Therefore, it is only necessary to select data when combustion is stopped during data processing.

In addition to the above-mentioned devices, the temperature can also be measured using the device of the present invention even in devices with conventionally used structures. In other words, in the case of such conventionally commonly used lids, a device with a magnet at the tip is used as the lid removing device, and the magnet moves back and forth until it deviates from the line connecting the thermometer and the Friyu nozzle. An appropriate mechanism may be provided.

When measuring the temperature of a combustion chamber equipped with a lid, which is commonly used in the past, using a furnace temperature measuring device equipped with a lid removal device as described above, the temperature gauge should be measured by running a measuring vehicle on the Furyu nozzle. After placing the thermometer above the thermometer, stop once, lower the magnet to hold the lid by suction, and pass it through the Friyu nozzle while reciprocating the lid together with the magnet to a position outside the line connecting the thermometer and the Friyu nozzle. Measure temperature. After the measurement, the measuring car is moved to the top of the next Furyu nozzle to be measured, stopped, and then the measurement is carried out in the same manner.

In the furnace temperature measuring device of the present invention, the furnace temperature is measured after automatically opening the lid of the Furyu nozzle to be measured while moving the measuring car toward the furnace above the furnace as described above. The lid is closed. After the predetermined measurement is completed, the measurement vehicle is stored in the hangar. The battery is automatically charged by the above-mentioned charging device at the same time as the vehicle enters the warehouse.

As described above, according to the present invention, furnace temperature measurement and charging are all performed automatically. Moreover, since charging is started only after the current from the battery is passed through the exact same path as the current flowing for charging and this is detected on the charging device side, charging can be performed extremely safely and reliably. . Furthermore, by providing the first and second limit switches, charging can be performed more reliably.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing the configuration of the vicinity of the measurement vehicle hangar equipped with the charging device used in the present invention, Figure 4 is a diagram showing the arrangement of the friu nozzle on the coke oven, and Figure 5 is the diagram showing the configuration of the vicinity of the measuring vehicle hangar equipped with the charging device used in the present invention. Side view of the measurement vehicle used,
FIG. 6 is a plan view of the measurement vehicle, FIG. 7 is a perspective view of the lid opening/closing member, FIG. 8 is a perspective view of the lid closing member, and FIG. 9 is a plan view showing an example of the lid provided on the Friyu nozzle. FIG. 10 is a side view of the lid, FIG. 11 is a diagram showing the lid opening/closing operation, FIG. 12 is a diagram showing the lid installation situation in an Otto furnace, and FIG. 13 is a diagram showing the lid installation situation in a Karl Steel furnace. FIG. 14 is a diagram showing a case where the measuring car runs on a lid that is already open, FIG. 15 is a perspective view showing another second example of the lid and its opening/closing member, and FIG. 16 is a diagram showing a second example of the lid and its opening/closing member. 17 is a sectional view of the fourth example of the lid, and FIG. 17 is a sectional view of the fourth example of the lid.
FIG. 8 is a side view of the measuring wheel equipped with the lid cleaning device shown in FIG. 17. 1... Measuring wheel, 2... Thermometer, 3, 3'... Lid opening/closing member, 4, 4'... Lid closing member, 5... Battery, 6... Pantograph, 7... First limit switch, 10...Rail, 11...Measurement vehicle hangar, 13...Charging device, 14...Trolley,
15...Power cable, 16...Second limit switch.

Claims (1)

[Scope of Claims] 1. In an apparatus in which a measuring car equipped with a thermometer using heat radiation and a battery and driven by the battery is run over a coke oven oven, and the oven temperature is measured by the thermometer through a Furyu nozzle, An electric contact provided on the measuring car and connected to the battery, a charging device installed at the end of the coke oven, and a charging device provided in the charging device detecting the current flowing from the battery to the charging device to charge the battery. an electrical contact connected to the charging device via a detection and switching circuit that switches the flow of current from the device to the battery, and an electrical contact connected to the battery when the measuring vehicle reaches the charging position; 1. A coke oven oven temperature measuring device, characterized in that the installation positions of both contacts are determined so that they are connected to an electric contact connected to a charging device. 2. A first limit switch is provided on the measuring wheel and an operating piece is provided at the charging position, and the first limit switch is connected to the operating piece so that the first limit switch is turned on by the operating piece when the measuring car reaches the charging position. 2. A coke oven oven temperature measuring device according to claim 1, wherein the measuring wheel is positioned with respect to the operating piece and the measuring wheel is stopped when the first limit switch is turned on. 3. A second limit switch is provided at the charging position, and an operating piece is provided on the measuring car, and the measuring car is configured to turn on the second limit switch by the operating piece provided on the measuring car when the measuring car reaches the charging position. Claim 1 or 2: The operating piece provided in the vehicle and the second limit switch are positioned so that charging is started when the second limit switch is turned on and both electrical contacts are connected.
coke oven oven temperature measuring device.