JP2014004165A - Fire extinguishing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire extinguishing facility capable of preventing a liquid fire extinguishing agent from remaining in a fire extinguishing agent transporting tube and reliably ejecting the liquid fire extinguishing agent in ejection of the liquid fire extinguishing agent.SOLUTION: Pressure gas is supplied from a pressure gas storing container 5 to a fire extinguishing agent storing container 2 by a pressure gas transporting tube 6, and a liquid fire extinguishing agent stored in the fire extinguishing agent storing container 2 is compressed by the pressure gas and discharged from the fire extinguishing agent storing container 2 to the fire extinguishing agent transporting tube 3. The discharged liquid fire distinguishing agent is guided to fire extinguishing subject areas D1 to D3 so that fire is extinguished and put out. A fire extinguishing agent flow path opening/closing valve 8 is provided in the fire extinguishing agent transporting tube 3 and one end of a bypass tube 11 for push-out pressure supplying means 9 is connected to the fire extinguishing agent transporting tube 3 on the upstream side of the fire extinguishing agent flow path opening/closing valve 8, while the other end of the bypass tube 11 is connected thereto on the upstream side of the fire distinguishing agent flow path opening/closing valve 8, so that a pressure to push out the fire extinguishing agent to the downstream side is supplied to the upstream side of the fire extinguishing flow path opening/closing valve 8 in the fire extinguishing agent transporting tube 3 and the liquid fire extinguishing agent remaining on the upstream side of the fire extinguishing agent flow path opening/closing valve 8 in the fire extinguishing agent transporting tube 3 is discharged to the downstream side of the fire extinguishing agent flow path opening/closing valve 8.

Description

  The present invention relates to a fire extinguishing facility that supplies pressurized gas from a pressurized gas storage container to a fire extinguisher storage container in which a liquid fire extinguisher is stored, and discharges the liquid fire extinguishing agent from an ejection head.

  Conventionally, in a fire extinguisher, a liquid fire extinguisher is stored in a fire extinguisher storage container, and a pressurized gas for extruding this liquid fire extinguisher from the fire extinguisher storage container is filled into the fire extinguisher storage container. A pressure-accumulating fire extinguishing equipment configured to release a liquid fire extinguisher into a transport pipe at a pressure of a pressurized gas when the attached container valve is opened is used.

  In such a pressure-accumulating fire extinguishing facility, when the liquid fire extinguisher is released, the occupied volume of the pressurized gas increases as the volume of the liquid fire extinguisher in the fire extinguisher storage container decreases. Therefore, as the discharge of the liquid fire extinguisher from the fire extinguisher storage container proceeds, the pressure of the pressurized gas in the fire extinguisher storage container gradually decreases. Therefore, a plurality of fire extinguishing agent storage containers are installed in order to continuously discharge the liquid fire extinguishing agent to the transport pipe for a certain time without attenuating the momentum of releasing the liquid extinguishing agent.

  Such a conventional fire extinguishing equipment is disclosed in, for example, Patent Document 1. This prior art fire extinguishing equipment is installed at the top of a liquid fire extinguisher storage tank filled with liquid fire extinguisher and pressurized gas, a pressurized gas storage tank filled with pressurized gas, and a liquid fire extinguisher storage tank A first container valve, a second container valve mounted on the top of the pressurized gas storage tank, and an activation device.

  When the occurrence of a fire is detected by the fire detector, a high-pressure starter gas is supplied from the starter to the first container valve, the first container valve is opened by the pressure of the starter gas, and the liquid fire extinguisher is a liquid fire extinguisher. It is discharged from the storage tank and supplied to a protective compartment, which is a room to be extinguished through a transfer pipe.

  Further, a branch conveyance pipe is branched and connected to the conveyance pipe, and through this branch conveyance pipe, the liquid fire extinguisher discharged from the liquid fire extinguisher storage tank is led to the second container valve, The second container valve is opened by the pressure. When the second container valve is opened, the pressurized gas filled in the pressurized gas storage tank is supplied to the liquid fire extinguisher storage tank through the pressurized gas outlet pipe and the check valve. Thereby, the pressure drop of the pressurized gas in the liquid fire extinguishing agent storage tank accompanying the decrease in the liquid fire extinguishing agent storage tank can be prevented.

JP 2003-79758 A

  In the above-described prior art fire extinguishing equipment, when the entire amount of the liquid fire extinguisher in the liquid fire extinguisher storage tank is released for fire extinguishing, the liquid fire extinguisher may remain in the transfer pipe as the fire extinguisher transport pipe. There is a problem that the liquid fire extinguishing agent cannot be reliably discharged.

  An object of the present invention is to provide a fire extinguishing equipment that can prevent a liquid fire extinguisher from remaining in a fire extinguishing agent transport pipe when a liquid fire extinguisher is discharged, and can reliably discharge the liquid fire extinguisher. .

The present invention is a fire extinguisher storage container for storing a liquid fire extinguisher,
A pressurized gas storage container in which a pressurized gas for pressurizing the liquid fire extinguisher in the fire extinguisher storage container at a predetermined pressure is stored;
A pressurized gas transport pipe that forms a pressurized gas flow path for guiding the pressurized gas in the pressurized gas storage container from the pressurized gas storage container to the extinguishing agent storage container;
A fire extinguisher transport pipe that forms a fire extinguisher flow path that guides the pressurized liquid fire extinguisher in the fire extinguisher storage container from the fire extinguisher storage container to a fire extinguishing target region; and
A fire-extinguishing agent passage opening / closing valve provided on the fire-extinguishing agent transport pipe, for opening and closing the extinguishing agent passage;
The fire extinguisher transport pipe is connected to the upstream side of the fire extinguishing agent flow path opening / closing valve, and the pressure for pushing the liquid fire extinguishing agent from the upstream side to the downstream side of the fire extinguishing agent flow path opening / closing valve is the fire extinguisher. The fire extinguishing equipment is characterized by including extrusion pressure supply means for supplying the chemical into the agent transport pipe.

Further, the present invention provides the extrusion pressure supply means,
One end connected to a first connection position between the extinguishing agent flow path opening and closing valve and the extinguishing agent storage container in the extinguishing agent transport pipe, the extinguishing agent flow path opening and closing valve in the extinguishing agent transport pipe and the A bypass flow path having the other end connected to the second connection position downstream of the first connection position and through the liquid extinguishing agent or the pressurized gas. Forming a bypass pipe, and
A bypass passage opening / closing valve provided between one end and the other end of the bypass pipe and opening and closing the bypass passage.

  Further, according to the present invention, the extrusion pressure supply means includes an input port connected between the fire extinguisher storage container and the fire extinguishing target area in the fire extinguisher transport pipe, and the fire extinguisher flow path in the fire extinguisher transport pipe. An accumulator having an output port connected between the on-off valve and the extinguishing agent storage container, storing pressure by the pressurized gas guided from the input port, and releasing the pressure to store the pressurized gas It is a pressure accumulator discharged from the output port.

  According to the present invention, when the pressurized gas is supplied from the pressurized gas storage container to the fire extinguisher storage container through the pressurized gas transport pipe, the liquid fire extinguisher in the fire extinguisher storage container is pressurized with the pressurized gas, It is discharged from the fire extinguisher storage container to the fire extinguisher transport pipe. The liquid fire extinguisher discharged to the fire extinguisher transport pipe is guided to the fire extinguishing target area and released, and is used for fire extinguishing and extinguishing.

  The extinguishing agent transport pipe is provided with a fire extinguishing agent flow path opening / closing valve, and an extrusion pressure supply means is connected to the extinguishing agent transport pipe upstream of the extinguishing agent flow path opening / closing valve. By this extrusion pressure supply means, the pressure for extruding the liquid fire extinguishing agent to the downstream side of the fire extinguishing agent flow path opening / closing valve is supplied to the upstream side of the fire extinguishing agent flow path opening / closing valve in the fire extinguishing agent transport pipe. The liquid fire extinguisher that tends to stay upstream of the fire extinguishing agent flow path opening / closing valve of the fire agent transport pipe is discharged downstream from the fire extinguishing agent flow path opening / closing valve. It can prevent reliably remaining in a fire extinguisher transport pipe.

  According to the invention, the extrusion pressure supply means includes a bypass pipe and a bypass flow path opening / closing valve. One end of the bypass pipe is connected to a first connection position between the extinguishing agent flow path opening / closing valve and the extinguishing agent storage container in the extinguishing agent transport pipe, and the other end is connected to the extinguishing agent flow path in the extinguishing agent transport pipe. Connected between the on-off valve and the extinguishing agent storage container and at a second connection position downstream of the first connection position. Such a bypass pipe is provided with a bypass channel opening / closing valve that opens and closes the bypass channel. By opening the bypass pipe immediately before the completion of the discharge of the liquid extinguishing agent, the pressurized gas taken in from the first connection position of the extinguishing agent transport pipe after the completion of the discharge of the liquid extinguishing agent is transferred to the second connection position. The liquid extinguishing agent that is supplied from the second connection position into the extinguishing agent transport pipe and pressurizes the liquid extinguishing agent on the upstream side of the extinguishing agent passage opening / closing valve of the extinguishing agent transportation pipe, It is possible to discharge to the downstream side.

  In this way, by using the gas pressure of the pressurized gas immediately before the completion of the discharge of the liquid fire extinguisher, the liquid fire extinguisher is prevented from remaining in the fire extinguisher transport pipe at a low cost without complicating the configuration. be able to.

  Furthermore, according to the present invention, the extrusion pressure supply means is realized by a pressure accumulator. In this pressure accumulator, an input port is connected between the fire extinguisher storage container in the fire extinguisher transport pipe and the fire extinguishing target region, and an output port is connected to the fire extinguisher flow path opening / closing valve in the fire extinguisher transport pipe and the Connected to the fire extinguisher storage container. When the liquid fire extinguisher is guided to the fire extinguishing target region through the fire extinguisher transport pipe, pressurized gas is introduced and stored from the input port, and when the pressure of the pressurized gas decreases just before the liquid extinguisher is released, Liquid fire extinguisher stays upstream from the extinguishant transport pipe on / off side of the extinguishant transport pipe by supplying pressurized gas from the output port to the upstream side of the fire extinguisher transport pipe on / off valve Can be discharged to the downstream side of the extinguishing agent flow path opening / closing valve.

  In this way, when the liquid fire extinguisher is completely discharged, the liquid fire extinguisher can be transported at a low cost without complicating the configuration by using the gas pressure of the pressurized gas immediately before or after the completion of the discharge. It can prevent remaining in the pipe.

It is a distribution diagram showing a schematic structure of fire extinguishing equipment 1 of one embodiment of the present invention. It is the systematic diagram which expanded a part of fire extinguishing equipment 1 shown in FIG. It is a graph which shows the change with time progress of the pressure P in the fire extinguisher transport pipe 3 of the liquid fire extinguisher discharged | emitted from the fire extinguisher storage container 2. FIG. It is a systematic diagram which shows schematic structure of the fire extinguishing equipment 1a of other embodiment of this invention. It is a systematic diagram which shows schematic structure of the fire extinguishing equipment 1b of further another embodiment of this invention. It is a systematic diagram which shows schematic structure of the fire extinguishing equipment 1c of other embodiment of this invention. It is an expanded sectional view which shows the structure of the bypass flow-path opening-and-closing valve 74a shown in FIG.

  FIG. 1 is a system diagram illustrating a schematic configuration of a fire extinguishing facility 1 according to an embodiment of the present invention, and FIG. 2 is a system diagram in which a part of the fire extinguishing facility 1 illustrated in FIG. 1 is enlarged. The fire extinguishing equipment 1 of the present embodiment is installed in a building A which is a concrete structure having a multilayer structure, for example, and in accordance with the occurrence of a fire, a plurality (3 in the present embodiment) of fire extinguishing target areas D1, D2 and D3, The liquid fire extinguisher is configured to be able to release the vaporized fire extinguishing gas. Each fire extinguishing object area | region D1-D3 shows typically one of the several rooms of each hierarchy of the building A. FIG.

  The fire extinguishing equipment 1 is roughly divided into a plurality of (6 in this embodiment) fire extinguishing agent storage containers 2, fire extinguishing agent transport pipes 3, and fire extinguishing target areas D1, D2, and D3, respectively. A plurality of liquid fire extinguishing agent ejection heads 4, a pressurized gas storage container 5, a pressurized gas transport pipe 6, a plurality of (three in this embodiment) activation devices 7, and a fire extinguisher transport pipe 3 are provided. The fire extinguishing agent passage opening / closing valve 8 for opening and closing the extinguishing agent passage of the extinguishing agent transport pipe 3 and the extrusion pressure supply means 9 are configured.

  The extinguishing agent transport pipe 3 has a main pipe 30 and branch pipes 31, 32, 33 branched from the main pipe 30, and the extinguishing agent passage opening / closing valves 8a, 8b, 8c (when generically referred to, the subscripts a, b, and c are omitted, and simply referred to as “fire extinguishing agent passage opening / closing valve 8”) are interposed, and the ejection head 4 is connected. Each activation device 7 includes the pressurized gas storage container 5 described above, and the pressurized gas storage container 5 has a pressurized gas for pressurizing the liquid fire extinguisher in the fire extinguishing agent storage container 2 at a predetermined pressure. Stored.

  The pressurized gas transport pipe 6 forms a pressurized gas flow path that guides the pressurized gas in the pressurized gas storage container 5 from the pressurized gas storage container 5 to the extinguishing agent storage container 2. Moreover, the extinguishing agent transport pipe 3 forms an extinguishing agent flow path that guides the pressurized liquid extinguishing agent in the extinguishing agent storage container 2 from the extinguishing agent storage container 2 to each ejection head 4 in the extinguishing target region D1 to D3. To do.

  The fire extinguishing agent storage container 2 includes a container body 21 and a container valve 22. The container body 21 is composed of a pressure container. An opening is formed at the top of the container body 21, and the container valve 22 is connected to the opening. The container valve 22 is detachably connected to the opening, and the opening of the opening is closed in an airtight and liquid tight manner to form a sealed storage space in the container main body 21, and a liquid extinguishing agent is placed in the storage space. Filled and stored. The opening and closing operation of the container valve 22 is controlled by the starting gas from the starting device 7. As this starting gas, you may make it use the pressurized gas of the said pressurized gas storage container 5 as starting gas.

  Each container main body 21 is accommodated in, for example, a cylinder chamber 19 in a state where the storage space is filled with a liquid fire extinguisher and a pressurized gas compressed to a predetermined pressure. At this time, the cylinder chamber 19 is provided with a sufficient amount of liquid fire extinguisher to extinguish a fire that has occurred in the fire extinguishing target areas D1 to D3. In the present embodiment, six fire extinguishing agent storage containers are installed. A sufficient amount of liquid fire extinguishing agent is provided.

  As the fire extinguishing agent storage container 2, a container main body 21 having pressure resistance suitable for the pressure of the pressurized gas filled therein is used. In the present embodiment, the pressurized gas is filled at a pressure of about 4.2 MPa in order to extrude the liquid fire extinguisher filled inside with an extrusion pressure of about 4.2 MPa, for example. Therefore, as the container body 21, a pressure container having an allowable pressure of 4.2 MPa or more is used.

  Although it will not specifically limit as a liquid fire extinguisher with which the fire extinguisher storage container 2 is filled, if it has a fire extinguishing effect, For example, a carbon dioxide, a halide, etc. can be mentioned. Moreover, as pressurization gas, inert gas, such as nitrogen gas, can be mentioned, for example.

  The extrusion pressure supply means 9 is connected to the upstream side of the fire extinguishing agent flow path opening / closing valve 8 of the fire extinguishing agent transport pipe 3, and the liquid fire extinguishing agent is supplied from the upstream side portion to the fire extinguishing agent flow path opening / closing valve 8. Also, the pressure for extruding downstream is configured to be supplied into the extinguishing agent transport pipe 3. The extrusion pressure supply means 9 includes a bypass pipe 11 and a bypass flow path opening / closing valve 12.

  The bypass pipe 11 includes one end connected to the first connection position C1 between the extinguishing agent flow path opening / closing valve 8 and the extinguishing agent storage container 2 in the extinguishing agent transport pipe 3, and the extinguishing in the extinguishing agent transport pipe 3. The other end part connected between the agent flow path opening / closing valve 8 and the extinguishing agent storage container 2 and connected to the second connection position C2 on the downstream side of the first connection position C1. Such a bypass pipe 11 forms a bypass flow path through which the liquid extinguishing agent or the pressurized gas passes.

  In this embodiment and other embodiments described later, “downstream side” refers to the flow direction of the extinguishing agent from the extinguishing agent storage container 2 through the extinguishing agent transport pipe 3 toward each ejection head 4. “Upstream side” refers to the opposite direction to “downstream side”.

  The bypass flow path opening / closing valve 12 is provided between one end and the other end of the bypass pipe 11 and is realized by an electromagnetic open / close valve that opens and closes the bypass flow path, and the opening / closing operation is controlled by the control device 13. The control device 13 is realized by a computer in the present embodiment, but may be realized by a sequence control device in another embodiment of the present invention.

  The control device 13 responds to a start signal when a start signal from a fire detector (not shown) and a manual start device installed on the wall surface and ceiling of each fire extinguishing target region D1 to D3 of the building A is input. Then, the container valve 22 is opened, pressurized gas is supplied to each extinguishing agent storage container 2, the liquid extinguishing agent is discharged to the extinguishing agent transport pipe 3, and the fire extinguishing target areas D1 to D3 where the fire is detected. The corresponding extinguishing agent flow path opening / closing valve 8 is opened.

  Further, the control device 13 opens the bypass flow path opening / closing valve 12 before the completion of the discharge, guides the pressurized gas in the extinguishing agent transport pipe 3 to the first connection position C1 to the second connection position C2, and extinguishes the fire extinguisher being opened. Bypass flow path so as to pressurize the liquid fire extinguisher present in the extinguishing agent transport pipe 3 upstream of the agent flow path opening / closing valve 8 and discharge it downstream from the open fire extinguishing agent flow path opening / closing valve 8 The opening / closing operation of the on-off valve 12 is controlled.

  FIG. 3 is a graph showing the change of the pressure P in the extinguishing agent transport pipe 3 of the liquid extinguishing agent released from the extinguishing agent storage container 2 over time. When an activation signal is input to the control device 13 at time t1, the bypass flow path opening / closing valve 12 is opened at time t3 immediately before time t2 when the release of the extinguishing agent is completed. The immediately preceding time t3 is from 0.5 sec to 2.0 sec before the extinguishing agent release completion time t2 and within 10 sec after the extinguishing agent release completion (while the pressurizing gas is being released). Although it is set in the control device 13 and the case is most effective, it may be opened from time t1 after the start of discharge. The release completion time t2 is the time when about 10 to 60 seconds have elapsed from the start of the release of the extinguishing agent. Immediately after the completion of the release, the pressurized gas starts to be released from the extinguishing agent transport pipe 3 instead of the liquid extinguishing agent. In some cases, a part of the liquid fire extinguisher remains in the fire extinguisher transport pipe 3.

  Part of the liquid fire extinguisher remains in the fire extinguisher transport pipe 3 because a part of the flow path cross section of the fire extinguisher transport pipe 3 serves as a pressurized gas flow path from the container valve 22 of the fire extinguisher storage container 2. Communicating to the ejection head 4 and staying in a place where the liquid extinguishing agent cannot move, such as when the extrusion pressure of pressurized gas to the liquid extinguishing agent in the pipe decreases and when the extinguishing agent flow path is closed It may be due to what you did.

  Even in such a case, the first connection position C1 of the extinguishing agent transport pipe 3 and the second connection position C2 upstream of the extinguishing agent channel opening / closing valve 8 are connected to the extinguishing agent channel floor, The gas pressure of the pressurized gas is guided to the second connection position C2, pressurizing the liquid fire extinguisher present in the pipe upstream from the fire extinguishing agent passage opening / closing valve 8, and applying an extrusion pressure to the liquid extinguisher that remains. The fire extinguishing agent passage opening / closing valve 8 can be extruded and discharged downstream.

  As described above, according to the present embodiment, when the pressurized gas is supplied from the pressurized gas storage container 5 to the fire extinguisher storage container 2 through the pressurized gas transport pipe 6, the liquid fire extinguisher in the fire extinguisher storage container 2 is changed. Pressurized by the pressurized gas and discharged from the extinguishing agent storage container 2 to the extinguishing agent transport pipe 3. The liquid fire extinguisher discharged to the fire extinguisher transport pipe 3 is guided to any one or a plurality of fire extinguishing target areas D1 to D3 and is discharged from each ejection head 4. The discharged liquid fire extinguisher is gasified immediately after being released and filled as a fire extinguishing gas in any one or a plurality of indoor spaces of the fire extinguishing target regions D1 to D3, thereby making the indoor space into a low oxygen state and extinguishing the fire. And subjected to fire extinguishing.

  The branch pipes 31, 32, 33 of the extinguishing agent transport pipe 3 are provided with extinguishing agent flow path opening / closing valves 8a, 8b, 8c. The branch piping upstream of the extinguishing medium flow path opening / closing valves 8a, 8b, 8c. The extrusion pressure supply means 9 is connected to 31, 32 and 33. By this extrusion pressure supply means 9, the liquid fire extinguishing agent is supplied from the extinguishing agent passage opening / closing valves 8a, 8b, 8c upstream of the extinguishing agent passage opening / closing valves 8a, 8b, 8c in the branch pipes 31, 32, 33. Since the pressure for extruding to the downstream side is also supplied, the liquid fire extinguishing agent that tends to stay upstream of the extinguishing agent passage opening / closing valve 8 of the branch pipes 31, 32, 33 is supplied to the extinguishing agent passage opening / closing valve 8a, It is possible to reliably prevent the liquid fire extinguishing agent from remaining in the fire extinguishing agent transport pipe 3 after discharging to the downstream side of 8b and 8c and releasing the liquid fire extinguishing agent.

  The extrusion pressure supply means 9 includes a bypass pipe 11 and a bypass flow path opening / closing valve 12, and the bypass pipe 11 has an extinguishing agent flow path opening / closing valve 8 at one end of the fire extinguishing agent transport pipe 3. Connected to the first connection position C1 between the fire extinguisher storage container 2 and the other end is a first connection between the fire extinguisher passage opening / closing valve 8 and the fire extinguisher storage container 2 in the fire extinguisher transport pipe 3 Since it is connected to the second connection position C2 on the downstream side of the position C1 and the bypass passage opening / closing valve 12 is provided in such a bypass pipe 11, the discharge of the liquid fire extinguishing agent is completed as described above. By opening immediately before, the pressurized gas taken in from the first connection position of the extinguishing agent transport pipe 3 at the time t3 before and after the time t2 when the release of the liquid extinguishing agent is completed is led to the second connection position C2, Fire extinguisher transport pipe from second connection position C2 The liquid extinguishing agent staying in the upstream side of the extinguishing agent passage opening / closing valve 8 of the extinguishing agent transport pipe 3 is pressurized and discharged to the downstream side of the extinguishing agent passage opening / closing valve 8. Can do.

  In this way, by using the gas pressure of the pressurized gas immediately before the completion of the discharge of the liquid fire extinguisher, the liquid fire extinguisher remains in the fire extinguisher transport pipe 3 at a low cost without complicating the configuration. Can be prevented.

  FIG. 4 is a system diagram showing a schematic configuration of a fire extinguishing facility 1a according to another embodiment of the present invention. Note that portions corresponding to those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted to avoid duplication. The fire extinguisher 1a of the present embodiment stores a fire extinguisher storage container 2 in which a liquid fire extinguisher is stored and a pressurized gas for pressurizing the liquid fire extinguisher in the fire extinguisher storage container 2 at a predetermined pressure. And a pressurized gas flow path for guiding the pressurized gas in the pressurized gas storage container 5 from the pressurized gas storage container 5 to the extinguishing agent storage container 2. A pressure gas transport pipe 6, a fire extinguisher transport pipe 3 that forms a fire extinguishing agent flow path for guiding the pressurized liquid fire extinguisher in the fire extinguisher storage container 2 from the fire extinguisher storage container 2 to a fire extinguishing target region; Fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c provided in the fire extinguishing agent transport pipe 3 and opening and closing the fire extinguishing agent flow path, and the fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c of the fire extinguishing agent transport pipe 3 The liquid extinguishing agent is connected to the upstream side of the extinguishing agent passage opening / closing valve 8 from the upstream side portion. , Including 8b, and the extrusion pressure supply means 9a for supplying the extruding pressure to the downstream side in the digestion fire agent transport pipe 3 than 8c.

  The extrusion pressure supply means 9a includes an input port 50 connected between the extinguishing agent storage container 2 in the extinguishing agent transport pipe 3 and the ejection heads 4 provided in the extinguishing target regions D1 to D3, and an extinguishing agent transport pipe. 3, a pressure accumulator 52 having an output port 51 connected between the extinguishing agent flow path opening / closing valves 8 a, 8 b, 8 c and the extinguishing agent storage container 2, and pressure applied from the input port 50 The pressure is accumulated by the gas, and the pressurized gas is discharged from the output port 51 by releasing the pressure accumulation.

  According to such a configuration, when the liquid fire extinguisher is guided to the fire extinguishing target regions D1 to D3 through the fire extinguishing agent transport pipe 3, the time t4 when the pressure is still high immediately after the extinguishing agent discharge is completed by the pressure accumulator 52. (See FIG. 3) At time t5 when the pressurized gas is introduced from the input port 50 and accumulates pressure, and the pressure of the pressurized gas after completion of the discharge of the liquid extinguisher is reduced, the extinguisher is transported from the output port 51. A pressurized gas is supplied from the upstream side of the extinguishing agent flow path opening / closing valve 8 of the pipe 3 and the liquid stays upstream of the extinguishing agent flow path opening / closing valves 8a, 8b, 8c of the extinguishing agent transport pipe 3. The extinguishing agent can be pressurized and discharged to the downstream side of the extinguishing agent channel opening / closing valve 8.

  In such a configuration, the liquid fire extinguisher can be obtained at a low cost without complicating the configuration by using the gas pressure of the pressurized gas immediately before or after the completion of the release of the liquid fire extinguisher. Can be prevented from remaining in the extinguishing agent transport pipe 3.

  FIG. 5 is a system diagram showing a schematic configuration of a fire extinguishing equipment 1b according to still another embodiment of the present invention. Note that portions corresponding to those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted to avoid duplication. The fire extinguishing equipment 1b of the present embodiment stores a fire extinguishing agent storage container 2 in which a liquid fire extinguishing agent is stored and a pressurized gas for pressurizing the liquid fire extinguishing agent in the fire extinguishing agent storage container 2 at a predetermined pressure. And a pressurized gas flow path for guiding the pressurized gas in the pressurized gas storage container 5 from the pressurized gas storage container 5 to the extinguishing agent storage container 2. A pressure gas transport pipe 6, a fire extinguisher transport pipe 3 that forms a fire extinguishing agent flow path for guiding the pressurized liquid fire extinguisher in the fire extinguisher storage container 2 from the fire extinguisher storage container 2 to a fire extinguishing target region; Fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c provided in the fire extinguishing agent transport pipe 3 and opening and closing the fire extinguishing agent flow path, and the fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c of the fire extinguishing agent transport pipe 3 The liquid extinguishing agent is connected to the upstream side of the extinguishing agent passage opening / closing valve 8 from the upstream side portion. , Including 8b, and the extrusion pressure supply means 9b for supplying extruding pressure to the downstream side in the digestion fire agent transport pipe 3 than 8c.

  The extrusion pressure supply means 9b includes a connection pipe 60, a connection pipe flow path opening / closing valve 61 interposed in the connection pipe 60, a pressurized gas filling container 62 filled with a pressurized gas for extrusion, and the connection pipe 60. A pressure control valve 63 interposed between the connecting pipe flow path opening / closing valve 61 and the pressurized gas filling container 62 is included. The pressure control valve 63 functions as a regulator that can be set to a constant pressure, and can maintain the pressure of the pressurized gas for extrusion from the pressurized gas filling container 62 at a constant extrusion pressure.

  One end of the connection pipe 60 is connected to the bypass pipe 11, and the other end is connected to the container valve 62 a of the pressurized gas filling container 62. In the extrusion pressure supply means 9b of the present embodiment, the bypass pipe 11 of the connecting pipe 60 is used to prevent the extinguishing agent remaining in the extinguishing agent transport pipe 3 from flowing back to the extinguishing agent storage container 2 side during pressurization. The connection position 65 is selected as close to the extinguishing agent storage container 2 as possible.

  Release of the liquid fire extinguishing agent by opening the connection pipe flow path opening / closing valve 61 immediately before the completion of the discharge of the liquid fire extinguishing agent, that is, a period between time t4 and time t5 in FIG. Is completed, the pressurized gas in the pressurized gas filling container 62 is guided to the bypass pipe 11 and supplied from the bypass pipe 11 into the fire extinguishing agent transport pipe 3 through the second connection position C2, and the fire extinguisher transport pipe is supplied. 3 can be pressurized and discharged to the downstream side of the extinguishing agent flow path opening / closing valve 8. In this way, by using the gas pressure of the pressurized gas immediately before the completion of the discharge of the liquid fire extinguisher, the liquid fire extinguisher remains in the fire extinguisher transport pipe 3 at a low cost without complicating the configuration. Can be prevented.

  FIG. 6 is a partial system diagram showing a schematic configuration of a fire extinguishing facility 1c according to still another embodiment of the present invention, and FIG. 7 is an enlarged cross-sectional view showing the configuration of the flow path opening / closing valve 74a shown in FIG. It is. Note that portions corresponding to those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted to avoid duplication. The fire extinguishing equipment 1c of the present embodiment stores a fire extinguisher storage container 2 in which a liquid fire extinguisher is stored and a pressurized gas for pressurizing the liquid fire extinguisher in the fire extinguisher storage container 2 at a predetermined pressure. And a pressurized gas flow path for guiding the pressurized gas in the pressurized gas storage container 5 from the pressurized gas storage container 5 to the extinguishing agent storage container 2. A pressure gas transport pipe 6, a fire extinguisher transport pipe 3 that forms a fire extinguishing agent flow path for guiding the pressurized liquid fire extinguisher in the fire extinguisher storage container 2 from the fire extinguisher storage container 2 to a fire extinguishing target region; Fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c provided in the fire extinguishing agent transport pipe 3 and opening and closing the fire extinguishing agent flow path, and the fire extinguishing agent flow path opening / closing valves 8a, 8b, 8c of the fire extinguishing agent transport pipe 3 The liquid extinguishing agent is connected to the upstream side of the extinguishing agent passage opening / closing valve 8 from the upstream side portion. , Including 8b, and the extrusion pressure supply means 9c for supplying extruding pressure to the downstream side in the digestion fire agent transport pipe 3 than 8c.

  The extrusion pressure supply means 9c includes one end 71 connected to a pipe end portion on the downstream side of the extinguishing agent flow path opening / closing valves 8a, 8b, 8c in the extinguishing agent transport pipe 3, and the extinguishing agent transport pipe 3 The other extinguishers 72a, 72b, 72c are arranged so as to be connectable to positions nearer to the downstream side than the extinguishing agent flow path opening / closing valves 8a, 8b, 8c. A bypass pipe 73 that forms a bypass flow path that passes therethrough, and is provided between the other end portions 72a, 72b, 72c of the bypass pipe 73 and the branch pipes 31, 32, 33, and opens and closes the bypass flow path 73. And bypass flow path opening / closing valves 74a, 74b, 74c.

  The bypass flow path opening / closing valves 74 a, 74 b and 74 c are accommodated in a casing 77 having two piston chambers 75 and 76, a first piston 78 accommodated in one piston chamber 76, and the other piston chamber 75. The main piston is located in a portion near the downstream side of the fire extinguishing agent passage opening / closing valves 8a, 8b, 8c of the main pipe 30 and the second piston 79, which is a spool, the piston shaft 80 connecting the first and second pistons 78, 79, and the main pipe 30. The nozzle pipe 81 connected through the pipe 30 and the downstream side of the main pipe 30 with respect to the extinguishing agent passage opening / closing valves 8a, 8b, 8c and the upstream side of the connection part of the nozzle pipe 81 (FIG. 6). And a pressure guiding pipe 82 that connects the first piston chamber 75 and the branch pipes 31, 32, and 33. Such bypass flow path opening / closing valves 74a, 74b, and 74c constitute check valves.

  When any one of the extinguishing agent passage opening / closing valves 8a, 8b, 8c, for example, the extinguishing agent passage opening / closing valve 8a is opened, the extinguishing agent flows into the main pipe 30. The pressure of the pressure extraction portion 83 is transferred to the first piston chamber 75 by the pressure guiding pipe 82 that communicates the pressure extraction portion 83 and the bypass flow passage opening / closing valve 74a in the vicinity of the downstream side of the extinguishing agent flow passage opening / closing valve 8a of the main pipe 30. When guided, the first piston 78 moves in the direction of expanding the first piston chamber 75 against the spring force of the spring 84, thereby moving the piston shaft 80 of the bypass flow path opening / closing valve 74a. The 2nd piston 79 connected with the axis | shaft 80 is moved, and the bypass pipe 73 and the main piping 30 are connected. The main pipe 30 is provided with the nozzle pipe 81 protruding into the flow path, and the fire extinguisher flow path opening / closing valve 8a is opened in a state where the fire extinguisher flow path open / close valves 8b, 8c are closed, and the fire extinguishing agent is added. When flowing, a negative pressure is generated around the tip of the nozzle tube 81 due to the ejector effect. This negative pressure is guided to the bypass pipe 73 through one space communicating from the nozzle pipe 81 to the nozzle pipe 81 of the second piston chamber 76, and enters the extinguishing agent retaining portion E in the downstream end region of the main pipe 30. The staying extinguishing agent can be sucked out to the branch pipe 31 side and discharged to the downstream side of the extinguishing agent channel opening / closing valve 8a.

  In this way, the liquid fire extinguisher can be used at a low cost without complicating the configuration by using the gas pressure of the pressurized gas immediately before the completion of the discharge of the liquid fire extinguishing agent between times t4 and t5. It can be prevented from remaining inside.

DESCRIPTION OF SYMBOLS 1,1a, 1b, 1c Fire extinguishing equipment 2 Fire extinguisher storage container 3 Fire extinguisher transport pipe 4 Injection head 5 Pressurized gas storage container 6 Pressurized gas transport pipe 7 Start-up device 8 Fire extinguisher channel opening / closing valve 9, 9a, 9b, 9c Extrusion pressure supply means 11 Bypass pipe 12 Bypass flow path opening / closing valve 13 Control device 21 Container body 22 Container valve 30 Main pipe 31, 32, 33 Branch pipe 74a, 74b, 74c Bypass flow path opening / closing valve A Building C1 First connection position C2 Second connection position D1, D2, D3 Fire extinguishing target area

Claims (3)

A fire extinguisher storage container for storing a liquid fire extinguisher,
A pressurized gas storage container in which a pressurized gas for pressurizing the liquid fire extinguisher in the fire extinguisher storage container at a predetermined pressure is stored;
A pressurized gas transport pipe that forms a pressurized gas flow path for guiding the pressurized gas in the pressurized gas storage container from the pressurized gas storage container to the extinguishing agent storage container;
A fire extinguisher transport pipe that forms a fire extinguisher flow path that guides the pressurized liquid fire extinguisher in the fire extinguisher storage container from the fire extinguisher storage container to a fire extinguishing target region; and
A fire-extinguishing agent passage opening / closing valve provided on the fire-extinguishing agent transport pipe, for opening and closing the extinguishing agent passage;
The fire extinguisher transport pipe is connected to the upstream side of the fire extinguishing agent flow path opening / closing valve, and the pressure for pushing the liquid fire extinguishing agent from the upstream side to the downstream side of the fire extinguishing agent flow path opening / closing valve is the fire extinguisher. An extinguishing pressure supply means for supplying into the agent transport pipe. The extrusion pressure supply means includes
One end connected to a first connection position between the extinguishing agent flow path opening and closing valve and the extinguishing agent storage container in the extinguishing agent transport pipe, the extinguishing agent flow path opening and closing valve in the extinguishing agent transport pipe and the A bypass flow path having the other end connected to the second connection position downstream of the first connection position and through the liquid extinguishing agent or the pressurized gas. Forming a bypass pipe, and
The fire-extinguishing equipment according to claim 1, further comprising: a bypass flow path opening / closing valve provided between one end and the other end of the bypass pipe and opening and closing the bypass flow path.   The extrusion pressure supply means includes an input port connected between the extinguishing agent storage container and the extinguishing target area in the extinguishing agent transport pipe, the extinguishing agent passage opening / closing valve in the extinguishing agent transport pipe, and the fire extinguishing agent. A pressure accumulator having an output port connected to the agent storage container, which accumulates pressure by the pressurized gas introduced from the input port and releases the pressurized gas from the output port by releasing the pressure accumulation The fire extinguishing equipment according to claim 1, which is a pressure accumulator.

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