JP6363345B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

  The present invention relates to a sprinkler fire extinguishing facility.

  Conventionally, a sprinkler fire extinguishing facility is installed as a fire extinguishing facility in a certain scale building. The sprinkler fire extinguishing equipment is configured such that a sprinkler head is connected to a filled secondary side pipe and the pump is activated when a pressure drop in the pipe is detected. The pump is connected to a water tank as a water source, thereby forming a pressurized water supply apparatus (see, for example, Patent Document 1).

JP 2002-291932 A

  When a very large and strong earthquake occurs, equipment such as piping that makes up the sprinkler fire extinguishing equipment may be damaged. In particular, if the equipment for pressurized water supply to the secondary piping such as pumps and water tanks, including the water supply piping, is damaged, the function of pressurized water supply is lost. For example, water from the water source cannot be supplied to the sprinkler head, and even if a fire occurs, the water cannot be discharged from the sprinkler head.

  In addition, in the case of a wet sprinkler fire extinguishing facility in which the secondary side pipe is always filled with pressurized water, the water filled in the secondary side pipe will be discharged if the sprinkler head is opened. become. Although it can be expected quantitatively to suppress fire extinguishing, it is possible to pressurize the water filled in the secondary pipe if the pressurized water supply device has lost its function as described above. However, if a fire breaks out, the water will flow out, but it will not be possible to secure the minimum required pressurized water supply capacity to suppress fire extinguishment, and it will not be possible to sufficiently pressurize and discharge the water, which is expected to suppress fire extinguishing against fire. I can't do it.

  In view of the above circumstances, the present invention provides a sprinkler head that can pressurize water and discharge water from a sprinkler head even if the function of pressurized water supply from a water source is lost when an earthquake occurs. With the goal.

The present invention relates to a sprinkler fire extinguishing equipment provided on the secondary side of a flowing water detection device, comprising a secondary side pipe that is always filled with water, and a sprinkler head connected to the secondary side pipe. or provided directly to the secondary pipe that is provided on the secondary side of the sensing device, or provided via a branch pipe, an open valve normally in the closed state, provided on the secondary side of the relief valve , Comprising a pressurized tank whose interior is pressurized at a predetermined pressure, and an earthquake detection means for outputting an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher occurs, and outputting the earthquake detection signal by the earthquake detection means The sprinkler fire extinguishing equipment is configured to control the release valve to be in an open state when there is a fault.

  In this invention, it is provided on the secondary side of the water flow detection device and is normally closed, and a pressure tank provided on the secondary side of the open valve and pressurized inside with a predetermined pressure And an earthquake detection means for outputting an earthquake detection signal when an earthquake of a predetermined seismic intensity or more occurs, and when the earthquake detection signal is output by the earthquake detection means, the release valve is controlled to be opened. It is configured. As a result, when a strong earthquake occurs, the release valve is opened, and the secondary side pipe can be pressurized by the pressurized tank, and the equipment for pressurized water supply to the secondary side pipe by the earthquake Even if the function of pressurized water supply from the water source is lost and the sprinkler head is opened, the fire is extinguished if the sprinkler head is opened, but only the water filled in the secondary piping is used. It is possible to secure the pressurized water supply force necessary for the suppression, pressurize the water, and discharge the water from the sprinkler head.

  Therefore, according to the present invention, it is possible to provide a sprinkler fire extinguishing equipment capable of pressurizing and discharging water from a sprinkler head even if the function of pressurized water supply from a water source is lost when an earthquake occurs. it can.

  The invention further includes a fire detector that is installed in the same protection area as the sprinkler head, outputs a fire signal when a fire is detected, has an earthquake detection signal output by the earthquake detection means, and has a fire. When the fire signal is output by the sensor, the open valve is controlled to open, so that a strong earthquake occurs and the open valve is opened when a fire occurs. be able to. Thus, for example, when sprinkler heads are systematized for each protection area and a plurality of systems are provided, only the open valve in the protection area where the fire detector has detected a fire can be selectively opened. In other words, open valves in other protection areas can be kept closed, and sprinkler heads in other protection areas can be damaged by earthquakes, releasing water even though no fire has occurred. Even in such a state, it is possible not to release it under pressure, and to reduce damage caused by water damage.

  In the present invention, the pressurized tank is further filled with air and water, so that the pressurized tank is filled in addition to the water filled in the secondary pipe. Water can be discharged from the sprinkler head, and more water can be discharged from the sprinkler head.

  In the present invention, a plurality of secondary side pipes connected to the sprinkler head and provided with an open valve and a pressurized tank are provided, and the secondary side pipes of the plurality of systems are connected to each other via a connecting pipe. The water that is filled in the pressurized tank in the other protection area where the sprinkler head is not open is also protected from the fire protection area. And can be released from an open sprinkler head, and even more water can be released.

BRIEF DESCRIPTION OF THE DRAWINGS It is an example of the system configuration | structure of the sprinkler fire extinguishing equipment of this invention, and is a systematic diagram of the whole equipment of 1st Embodiment. It is a principal part enlarged view of FIG. 1, and shows the state at the time of the occurrence of an earthquake and a fire. It is a systematic diagram of the whole installation of 2nd Embodiment same as the above. FIG. 4 is an enlarged view of a main part of FIG. 3, showing a state when an earthquake occurs and a fire occurs.

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

  First, based on FIG.1 and FIG.2, the system configuration | structure of the sprinkler fire-extinguishing equipment 1-1 which concerns on 1st Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the sprinkler fire extinguishing equipment 1-1 is basically a wet sprinkler fire extinguishing equipment, and a water supply book whose base end side is connected to a pump 15 and a water storage tank 14 constituting a pressurized water feeding device. A pipe 2, a primary pipe 3 branched from the water supply main pipe 2, a secondary pipe 5 arranged in each protection area and connected to a sprinkler head 6, and a primary pipe 3 and a secondary pipe 5. A running water detection device 4 provided between them is provided in the piping system, and the secondary side piping 5 on the secondary side of the running water detection device 4 is always filled with pressurized water. Reference numeral 17 denotes a test end test valve provided at the end of the secondary side pipe 5.

  As described above, the secondary pipe 5 is provided on the secondary side of the flowing water detection device 4, and the flowing water detection device 4 detects the flowing water in the secondary pipe 5. Specifically, the flowing water detection device 4 detects a decrease in the pressure in the secondary pipe 5 for detecting flowing water, and is provided with a pressure switch 4a for that purpose.

  The water supply main pipe 2 supplies water in the water storage tank 14 under pressure by a pump 15 and supplies it to the sprinkler head 6 through the primary side pipe 3 and the secondary side pipe 5 in the event of a fire. A pressure air tank 13 is connected to the water supply main pipe 2, and the water supply main pipe 2 is always kept together with the primary side pipe 3 and the secondary side pipe 5 by the pressurized air supplied from the pressure air tank 13. The internal pressure is maintained at a predetermined pressure. Further, the pressure air tank 13 is provided with a pressure switch 13a, and the pressure switch 13a detects a pressure drop in the pressure air tank 13 to detect a pressure drop in a pipe below the water supply main pipe 2. Be able to.

  The pump 15 is connected to a pump start panel 16 that controls the start via a signal line. In the present embodiment, a pressure switch 13a connected to the pressure air tank 13 is connected to the pump starter panel 16 via a signal line, and the pump starter panel 16 is connected to the pressure switch 13a. When the pressure drop signal is input, the pump 15 is controlled to start.

  Reference numeral 10 denotes a system control panel for performing various controls. The system control panel 10 includes a sprinkler control panel 11, and a pressure switch 4 a provided in the water flow detection device 4 is connected to the sprinkler control panel 11 via a signal line. The flowing water detection signal (flowing signal) in the secondary pipe 5 is input from the pressure switch 4a. In this embodiment, the sprinkler control panel 11 is connected to the pump activation panel 16 via a signal line, and the flowing water detection device 4 detects the flowing water in the secondary side pipe 5 by the pressure switch 4a. When a flowing water detection signal is input from the pressure switch 4a, it is possible to output a start signal to the pump start panel 16 and to control the start of the pump 15 through the pump start panel 16. Yes.

  Here, the operation when a fire occurs from the normal standby state in the sprinkler fire extinguishing equipment 1-1 will be described. Note that the sprinkler fire extinguishing equipment 1-1 is basically a wet sprinkler fire extinguishing equipment as described above, and when a fire occurs from a normal standby state, The same operation can be performed.

  That is, when a fire occurs from the usual normal standby state and the sprinkler head 6 is opened, the water filled in the secondary side pipe 5 is discharged first. When the water filled in the secondary side pipe 5 is discharged, the flowing water detection device 4 detects the flowing water, and a flowing water detection signal is output from the pressure switch 4 a to the system control panel 10. Further, when the water filled in the secondary side pipe 5 is discharged, the water in the primary side pipe 3 and the water supply main pipe 2 flows to the secondary side pipe 5 side, and the pressure in the pressure air tank 13 is increased. A decrease occurs. The pressure switch 13a detects the pressure drop, and a pressure drop signal is output from the switch to the pump starting board 16. The pump start panel 16 that has received the pressure drop signal outputs a start signal to the pump 15, thereby starting the pump 15. By starting the pump 15, the water in the water storage tank 14 is continuously supplied to the sprinkler head 6 through the water supply main pipe 2, the primary side pipe 3 and the secondary side pipe 5, and the water is continuously supplied from the sprinkler head 6. It has come to be discharged. The start control of the pump 15 may be performed by a signal based on the flowing water signal from the pressure switch 4a of the flowing water detection device 4 as described above, and in this embodiment, also in the second embodiment. Although it is the same, the fire detector 9 is provided as described later, and it can be operated as a pre-actuated sprinkler fire extinguishing equipment. That is, the start control of the pump 15 is controlled by the pressure switch 4a of the flowing water detector 4. It may be performed when there is both a running water signal from and a fire signal from the fire detector 9.

  As described above, the sprinkler fire extinguishing equipment 1-1 can be operated in the same manner as a general wet sprinkler fire extinguishing equipment when a fire occurs from a normal standby state, but an earthquake occurs. When it does, it is comprised so that operation | movement different from a general thing can be made.

  That is, the sprinkler fire extinguishing equipment 1-1 is provided on the secondary side of the flowing water detection device 4, and is normally provided on the secondary valve side of the open valve 18 and the open valve 18, and the inside thereof has a predetermined pressure. And a seismic device 20 which is an example of an earthquake detection means for outputting an earthquake detection signal when an earthquake of a predetermined seismic intensity or more occurs, and the seismic detector 20 detects an earthquake. When a signal is output, the release valve 18 is controlled to be opened.

  As a result, the sprinkler fire extinguishing equipment 1-1 is configured to open the open valve 18 and preliminarily pressurize the secondary side piping by the pressurizing tank 19 when a strong earthquake having a predetermined seismic intensity or more occurs. Can be done. For this reason, equipment for pressurized water supply to the secondary side pipe 5, the water tank 14, the pump 15, the water supply main pipe 2, and the primary side pipe 3 are damaged by the earthquake, and the water source 14 is the water source 14. Even if the function of pressurized water supply is lost, if a fire occurs after that and the sprinkler head 6 is opened, only the water filled in the secondary side pipe 5 is obtained, but the inside of the pressurized tank 19 The pressurized water supply force necessary for suppressing fire extinguishing is secured by the pressurized air, and the water can be pressurized and discharged from the sprinkler head 6.

  Furthermore, the sprinkler fire extinguishing equipment 1-1 of this embodiment is demonstrated.

  The sprinkler head 1-1 is provided with a plurality of secondary pipes 5 or the like to which the sprinkler head 6 is connected in accordance with the protection area. For each protection area (for example, each floor of the building) And a fire detector 9 that outputs a fire signal when a fire occurring in each protection area is detected.

  The system control panel 10 includes the sprinkler control panel 11 as described above, but also includes a fire receiver 12. The sprinkler control panel 11 includes a drive motor 18 a for the release valve 18 and a vibration detector 20. Fire detectors 9 are connected to the fire receiver 12 for each of the protection areas, respectively, via signal lines.

  That is, in the system control panel 10, when the sprinkler control panel 11 receives the output of the earthquake detection signal from the seismic device 20, it outputs an opening signal to the opening valve 18 and remotely controls the opening / closing valve 18. However, a fire signal may be added as an opening condition of the release valve 18 separately. That is, when the sprinkler control panel 11 receives the output of the earthquake detection signal from the seismoscope 20 and the fire receiver 12 receives the fire signal from the fire detector 9, the sprinkler control panel 11 11 may output an open signal to the open valve 18 so that the open valve 18 can be remotely controlled to open.

  As a result, the sprinkler fire-extinguishing equipment 1-1 has a protection area (in the drawing, in the upper part of the drawing), for example, as shown in FIG. Only the open valve 18 in the region) is controlled to open, the pressure in the pressurized tank 19 is supplied to the secondary side pipe 5 (see arrow A1), and the water filled in the secondary side pipe 5 is pressurized. Thus, water can be discharged from the sprinkler head 6.

  In this embodiment, the release valve 18 and the pressurizing tank 19 are provided on the end side of the secondary side pipe 5, and are provided on the downstream side of the sprinkler head 6. As a result, even if the open valve 18 that is normally closed is provided directly on the secondary side pipe 5, the flow of water from the base end side to the sprinkler head 6 when a fire occurs from a normal standby state is prevented. It is designed not to be closed. If the release valve 18 and the pressurized tank 19 are provided via a branch pipe branched from the secondary side pipe 5, the release valve 18 and the pressure tank 19 may be provided on the upstream side of the sprinkler head 6. By providing it through the branch pipe, even if it is arranged on the upstream side of the sprinkler head 6, it reaches the sprinkler head 6 from the base end side when a fire occurs from a normal standby state, similarly to the arrangement on the downstream side. It is possible to prevent the water flow from being blocked. In addition, the arrangement position on the base end side of the secondary side pipe 5 can be a position in the vicinity of the flowing water detection device 4. By arranging in such a manner, it is possible to easily secure the place of the pressurized tank 19 having a large capacity in terms of the arrangement structure of the facilities in the building.

  The pressurized tank 19 can be about half the capacity of the pressurized air tank 13 provided on the water supply main pipe 2 side. Specifically, for example, if the capacity of the pressurized air tank 13 is about 100 L as a standard, the capacity of the pressurized tank 19 can be about 50 L. The pressurized tank 19 can be almost completely filled with air (a little water may be filled for sealing), and the pressure inside the tank can be 1 Mpa or less. The pressurized tank 19 can be filled with water. By filling with water, in addition to the water filled in the secondary pipe 5, the water filled in the pressurized tank 19 can be discharged from the sprinkler head 6. Water can be discharged.

  As the seismic sensor 8, a mechanical type or the like that is conventionally used can be used, but an acceleration sensor type can also be used. The predetermined seismic intensity detected by the seismic sensor 8 can be, for example, a seismic intensity of 3 or more.

  Instead of the seismoscope 8, the earthquake detection means may use a seismic motion forecast / alarm signal based on an "emergency earthquake early warning" that can be obtained from the Japan Meteorological Agency or the like via a communication network. That is, as a means for detecting earthquakes, instead of the seismic sensor 8, a seismic motion forecast / alarm signal by “Emergency Earthquake Early Warning” is received, and when the signal is received, the system control panel 10 It is also possible to use a receiving device that outputs to the sprinkler control panel 11.

  Next, based on FIG.3 and FIG.4, the system configuration | structure of the sprinkler fire-extinguishing equipment 1-2 which concerns on 2nd Embodiment of this invention is demonstrated. In the sprinkler fire extinguishing equipment 1-2 according to the second embodiment, the pressurized tank 19 is also filled with a predetermined amount of water, and the secondary pipes 5 are further connected to each other to form a plurality of pressurized tanks 19. Can be used for pressurization and water supply. Other components are the same as those in the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 3, the sprinkler fire extinguishing equipment 1-2 is configured such that each pressure tank 19 is filled with pressurized air and water, and the secondary pipes 5 are connected to each other. The connecting pipe 21 is further provided.

  The connection pipe 21 is provided by connecting the secondary side pipes 5 provided in different protection areas on the secondary side of the pressurized tank 19. Specifically, the connecting pipe 21 is connected to each secondary pipe 5 via a switching valve 22 made of, for example, a three-way valve, and each secondary side is connected by a flow path switching operation by the switching valve 22. Communication between the pipes 5 and switching between the pipes 5 can be switched. The drive motor 22a of the switching valve 22 is connected to the sprinkler control panel 11 of the system control panel 10 so that the flow path switching control can be performed at the same timing as the opening control of the opening valve 18. Yes. In addition, although the switching valve 22 is shown by three triangles, it has shown that the part which the triangle is white is in an open state, and the black triangle is in a closed state.

  As a result, when the sprinkler fire extinguishing equipment 1-2 generates an earthquake with a predetermined seismic intensity or higher and a fire occurs thereafter, for example, as shown in FIG. 4, when a fire occurs on the nth floor of the building, Only the release valve 18 on the nth floor is controlled to be opened so that pressurized air and water in the pressurized tank 19 on the nth floor are supplied to the secondary side pipe 5 on the nth floor ( Each switching valve so as to communicate between the secondary side pipe 5 on the nth floor and the secondary side pipe 5 on the (n-1) th floor, which is another protection area where no fire has occurred. 22 is controlled so that pressurized air and water in the pressurized tank 19 on the (n-1) th floor are supplied to the secondary side pipe 5 on the nth floor through the connection pipe 21 (arrow A2 and A3), the pressurized tank 19 on the n floor and the pressurized tank 19 on the n-1 floor are linked. The pressurized air and water in the two pressurized tanks 19 are supplied to the secondary side pipe 5 on the nth floor, and in addition to the water filled in the secondary side pipe 5, The water filled in the tank 19 can be pressurized and discharged from the sprinkler head 6 on the n-th floor, and more water can be discharged.

  In addition, the object and the number of the pressurized tanks 19 and the like in the other protection areas where no fire is caused to cooperate with the pressurized tanks 19 and the like in the protection area where the fire has occurred can be appropriately changed. For example, instead of or in addition to the pressurized tank 19 or the like in the n-1 floor protective area directly below the pressurized tank 19 or the like in the nth floor protected area, the lower n-2 floor or the like A pressurized tank 19 or the like in the protection area may be selected. Note that the pressure tank 19 or the like to be linked may be located in the upper floor protection area, but the fire expands from below to above, and the pressure tank in the lower floor protection area. It is preferable to select from 19 grades.

  In order to perform such control, the system control panel 10 needs to store the occurrence of a fire for each protection section (floor). That is, the fire receiver 12 can detect on which floor of the building a fire has occurred based on the fire signal received from the fire detector 9, and the fire information including the position information is sent to the sprinkler board 11. It is configured to output.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment.

  In the above embodiment, the preliminary pressurized water supply means may be configured using the end test valve 17 of the secondary side pipe 5, and in that case, it is added to the secondary side of the end test valve 17. Although the pressure tank 19 is connected, it is necessary to provide the function of the release valve 18 while ensuring the function as a discharge test valve that can be manually operated. For example, the end test valve is composed of the aforementioned three-way valve. It can be realized by comprising a switching valve and connecting a drain pipe to one port of the switching valve. The terminal test valve 17 is provided in a place where an inspector can operate. If a preliminary pressurized water supply means is configured using the terminal test valve 17, the main pressurized water supply function is reduced due to the occurrence of an earthquake. In addition, even if the electrical system goes down and control by the system control panel 10 becomes impossible, the inspector manually operates the secondary pipe 5 in the event of a fire. The water filled in can be pressurized and allowed to discharge.

  Further, although the case where the pressurized tank is filled with pressurized air has been described, a gas other than air, for example, nitrogen gas or carbon dioxide gas may be filled. If an inert gas such as nitrogen gas is filled, water is discharged from the sprinkler head that has been opened, and then nitrogen gas is released, which contributes to fire extinguishing.

  Also, in this embodiment, assuming that the pump will break down, when pressurization from the pump is cut off at the time of earthquake occurrence, auxiliary pressure is applied by the pressure tank, but for example, an earthquake occurs However, when the main pump does not break down and can be pressurized normally by the pump, the pressurization by the pump and the pressurization by the pressurization tank may be switched. For example, switching between the pump and the pressurization tank can be mechanically (physically) pressurized from either one by providing a difference between the pressurization pressures.

  Further, although the pressure tank is separately provided in the secondary side pipe, a pipe having a large diameter may be used, and an air reservoir may be provided in the pipe so as to be pressurized.

1: Sprinkler fire extinguishing equipment 2: Water supply main pipe 3: Primary side piping 4: Flow water detection device 4a: Pressure switch 5: Secondary side piping 6: Sprinkler head 9: Fire detector 10: System control panel 11: Sprinkler control panel 12 : Fire receiver 13: Pressure air tank 13a: Pressure switch 14: Water tank 15: Pump 16: Pump start panel 17: Terminal test valve 18: Open valve 19: Pressurized tank 20: Shock absorber

Claims (5)

In the sprinkler fire extinguishing equipment, which is provided on the secondary side of the water flow detection device and includes a secondary side pipe that is always filled with water, and a sprinkler head connected to the secondary side pipe,
Or provided directly on the water flow detection the secondary pipe that is provided on the secondary side of the device, or provided via a branch pipe, an open valve normally in a closed state, the secondary side of the relief valve Provided with a pressurized tank whose inside is pressurized at a predetermined pressure, and an earthquake detection means for outputting an earthquake detection signal when an earthquake of a predetermined seismic intensity or higher occurs.
A sprinkler fire extinguishing system configured to control the release valve to an open state when an earthquake detection signal is output by the earthquake detection means.   The fire detector is installed in the same protection area as the sprinkler head and outputs a fire signal when a fire is detected, and there is an output of an earthquake detection signal by the earthquake detection means, and a fire signal by the fire sensor The sprinkler fire extinguishing equipment according to claim 1, wherein the open valve is controlled to be in an open state when there is an output. The sprinkler fire extinguishing equipment according to claim 1 or 2, wherein the earthquake detection means uses a prediction / alarm signal of earthquake motion based on an emergency earthquake warning . The sprinkler head is connected, and the secondary side piping provided with the release valve and the pressurized tank is provided with a plurality of systems, and the secondary systems of the plurality of systems are connected to each other through a connecting pipe. The sprinkler fire extinguishing equipment according to any one of claims 1 to 3 , wherein a plurality of pressurized tanks can pressurize and supply water in cooperation with each other.   The sprinkler fire extinguishing equipment according to claim 4, wherein the connection pipe is connected to each of the secondary side pipes via a switching valve.

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