JPH1015102A - Fixed fire-extinguishing device for warehouses - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-extinguishing device surely restraining and protecting fires in stock shelves in a warehouse, which can certainly protect erroneous operation of the device due to freezing of water in the piping even in winter or a cold district. SOLUTION: An air supply pipe 23a extending from a compressor 21 is connected to a detection sprinkler head 3a in a protection area via an orifice 24a and a check valve 25a. Pressurized air in a branched air supply pipe is used as a pilot pressure of a control valve 8a to close the valve. When the detection sprinkler head 3a is opened due to a fire, the pilot pressure is decreased to open the valve. When the control valve 8a is opened, water for extinguishing a fire in the first side is supplied as a pilot pressure to open the valve, and the water is supplied to fire-extinguishing sprinkler heads 2a and 2b to be sprinkled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed fire extinguishing system for a warehouse, known as a large number of large-scale automatic warehouses.
In particular, the present invention relates to a fixed fire extinguishing system for a dry warehouse, in which fire extinguishing water is kept out of a pipe in a regular monitoring state as much as possible.

[0002]

2. Description of the Related Art In recent years, three-dimensional automatic warehouses that automate warehouse operations such as storage, storage, and delivery of luggage have become widespread. There are also things. Many of such warehouse facilities have high ceilings and relatively large scales in order to make effective use of space. In addition, in order to reduce operating costs, people are often unmanned at night. At present, fixed fire extinguishing equipment for such warehouse equipment is
Closed sprinkler fire extinguishing equipment is the mainstream.

FIG. 8 shows a conventional closed-type sprinkler fire extinguishing system for a warehouse. A large number of shelves 101 are installed in the warehouse 100 in the vertical and horizontal directions, and each of the shelves 101 is transported and stored by a stacker crane or the like on a pallet. A closed sprinkler head 103 is installed on each of the load shelves 101. The closed type sprinkler head 103 is connected by a branch pipe 106 to a water supply main pipe 105 drawn from a fire pump 104 installed outside. The fire pump 104 is provided with a motor 107. Further, the water supply main pipe 105 from the fire pump 104 is branched and connected to the pressure tank 109, and keeps the internal pressure of the water supply main pipe 105 at a specified value in a steady monitoring state.

[0004] When a fire such as luggage occurs in any of the luggage shelves 101, the closed type sprinkler head 103 installed at that location is activated by the heat of the fire, and sprinkles fire extinguishing water. As a result, the pressure in the pipe decreases, and this pressure drop is detected by the pressure switch 110 provided in the pressure tank 109.
, The motor 107 is started by the pump control panel 111, fire-extinguishing water is supplied by operation of the fire-extinguishing pump 104, and the fire is extinguished by spraying water from the activated closed sprinkler head.

[0005]

However, in such a conventional closed-type sprinkler fire extinguishing system,
In a warehouse fire where luggage is stored on many shelves, when the sprinkler head protecting the luggage burns and the sprinkler head that protects the luggage operates, flames are also transferred to adjacent luggage and the luggage that caused the fire Has been considerably burnt, and it has been confirmed through fire experiments that the operation of only one sprinkler cannot provide an effective fire extinguishing ability.

That is, when the sprinkler head at the place where a fire occurs operates, the fire has already become large and has been burned to adjacent luggage. Subsequently, the sprinkler head that protects the adjacent luggage is activated. At this time, the fire spreads to the adjacent shelves and the next fire spreads. Further, when the number of operating sprinkler heads increases, the amount of water sprayed per head decreases, and a predetermined fire extinguishing performance cannot be obtained. As a result, the shelves in the warehouse were completely burned down.

[0007] Even if the fire is extinguished, the number of operating sprinkler heads increases in accordance with the spread of the fire, thereby increasing the amount of water for extinguishing water for firefighting. There is a problem that it grows. Furthermore, since the number of protection compartments determined by the number of storage pallets becomes enormous, even if the sprinkler head is operating, it is not possible to easily determine the location of the fire,
It took time to extinguish the fire by the firefighting, and a predetermined amount of the water source was depleted at an early stage, and there was a risk that the fire would be burned out.

The space where the sprinkler fire extinguishing system is installed on the cargo rack in the warehouse is generally not air-conditioned.
In winter and cold regions, the fire water in the piping of the sprinkler fire extinguishing system freezes, and there is a risk that effective fire fighting may not be possible in the event of a fire. The present invention has been made in view of such conventional problems, and has a fixed fire extinguisher for warehouses that can reliably suppress and protect a cargo rack fire in a warehouse without requiring electrical control. The purpose is to provide equipment.

It is a further object of the present invention to provide a reliable fixed fire extinguishing system for warehouses that can reliably prevent malfunctions due to freezing of fire extinguishing water in piping even in winter or cold regions. .

[0010]

In order to achieve this object, the present invention is configured as follows. The present invention relates to a fixed fire extinguishing system for warehouses in which a plurality of shelves are arranged in the vertical and horizontal directions. First, a closed-type sensing sprinkler that is opened by a fire for each protection section including one or a plurality of shelves. Install a head and an open fire sprinkler head to sprinkle fire water.

Further, an air pipe is provided which branches from the compressor equipment for each protection section and supplies pressurized air to the sprinkler head for sensing. The air pipe is provided with a control valve. The control valve introduces pressurized air in the air pipe as pilot pressure, closes the valve, and opens the valve by reducing the pilot pressure by the opening operation of the sensing sprinkler head. The control valve controls a simultaneous release valve provided on the branch pipe of the fire extinguishing water.

The simultaneous release valve is provided in a branch pipe branched from the water supply main pipe of the pump equipment, supplies pressurized fire extinguishing water from the fire extinguishing pump equipment to the primary side, and connects the secondary side to the fire extinguishing sprinkler head. I do. Furthermore, the primary side of the simultaneous release valve is connected to the pilot port via the control valve, and when the primary side pressurized fire-extinguishing water is received as pilot pressure by opening the control valve, the valve is opened and the fire extinguishing sprinkler head is extinguished. Pass water through.

[0013] In such a fixed fire extinguishing system for a warehouse according to the present invention, since the piping of the sprinkler head for sensing is all air piping filled with compressed air, freezing of the piping system of the sprinkler head for sensing is performed. Is not at all,
It can reliably detect and operate fire even in winter or cold regions. In particular, the piping system of the sprinkler head for sensing
The use of fire-extinguishing water has a high possibility of freezing due to the use of thinner pipes than the fire-extinguishing water piping system, but the present invention completely eliminates such freezing problems.

Although the fire extinguishing water enters the primary side of the simultaneous release valve, the piping from the secondary side of the simultaneous release valve to the fire extinguishing sprinkler head is empty. This is not a freezing space where the inner shelves are lined up, but piping along the floor of the warehouse. Even if it is filled with fire extinguishing water, the possibility of freezing is quite low. In addition, in the case of fixed fire extinguishing equipment for warehouses, a general control valve that opens to the water supply main line in front of the branch pipe by an external control signal and allows pressurized fire extinguishing water to flow to the simultaneous release valve of the branch pipe. Is provided. This integrated control valve is closed during regular monitoring and fills the piping up to the simultaneous opening valve of the branch pipe connected to the secondary side with pressurized fire extinguishing water. Opening is controlled by a fire detection signal from the device. In this case, the general control valve operates as a pre-actuated valve that is single-interlocked by the fire detection signal.

The general control valve is in a closed state in a regular monitoring state, fills the primary side water supply main line with pressurized fire extinguishing water, and controls the piping from the secondary side to the simultaneous opening valve of each branch pipe. Use empty piping. In this case, the general control valve is controlled to open upon receiving both a fire detection signal from a fire detection device installed in the protection section and a pressure reduction detection signal from a pressure switch provided in the air pipe. This operates as a pre-actuated valve double-locked by the fire detection signal and the air pressure reduction detection signal.

Further, the main pipe from the secondary side of the general control valve to the simultaneous opening valve of the branch pipe is an empty pipe from which water is drained,
The effect of preventing freezing is even greater. The general control valve includes an electric control valve, such as a motor-operated valve or an electromagnetic valve, which is electrically driven by an external control signal to open and close the valve, and a primary-side pressurized fire-extinguishing water pilot port provided by the electric control valve. It is composed of a pressurized release type simultaneous release valve that is opened by supply. As a control valve for opening and controlling the simultaneous opening valve, an air cylinder valve that is opened by depressurization of an air pipe is used.

Further, in the present invention, a pressure reducing and opening type simultaneous opening valve can be used instead of the control valve. That is, a combination of a pressure reducing open type simultaneous opening valve for sensing and a pressurizing opening type simultaneous opening valve for fire extinguishing is used. Simultaneous release valve of decompression and opening type connects the air pipe from the compressor equipment to the primary side and connects the pilot port to the sprinkler head for sensing through the air pipe, and reduces the pilot pressure by opening the sprinkler head for sensing. The air pressure is supplied to the secondary side by opening the decompression type simultaneous release valve.

The pressurized open type simultaneous release valve is provided in a branch pipe branched from the water supply main pipe of the pump equipment, supplies pressurized fire extinguishing water from the fire extinguishing pump equipment to the primary side and extinguishes the secondary side. Connect to the sprinkler head, and further connect the pilot port to the secondary side of the decompression open type simultaneous release valve, and open the pressurized type simultaneous release valve when the air pressure due to the opening of the decompression open type simultaneous release valve is received as pilot pressure. The fire extinguishing water is passed through the fire extinguishing sprinkler head.

In this case, it is possible to dry up to the pilot pipe of the pressurized open type simultaneous release valve through which water for fire extinguishing passes, and the operation in the event of a fire is further improved by eliminating the freezing of the pilot pipe system. Can be assured. In addition, to sprinkle water in conjunction with the adjacent protection compartment, the air piping connecting the control valve pilot port to the sensing sprinkler head in the protection compartment is linked to the air piping of the sensing sprinkler head installed in the adjacent protection compartment. Connected via a check valve by piping. With this interlocking piping, when the sprinkler head for sensing in the own protection zone is activated, the control valve and the simultaneous release valve of the adjacent protection zone are interlocked to sprinkle fire extinguishing water from each fire extinguishing sprinkler head. Sprinkle water around the raised shelf.

Furthermore, in order to simplify the equipment configuration, a control valve and a simultaneous release valve are provided for at least every other protection section, and the protection sections without the control valve and the simultaneous release valve are located on both sides. The secondary side of the simultaneous release valve of the other protection compartment is connected to the fire extinguishing sprinkler head via a check valve. The sensing sprinkler head used in the fixed fire extinguishing equipment for a warehouse of the present invention is a closed sprinkler head, and the fire extinguishing sprinkler head is an open sprinkler head or a foam head. In this way, by using the existing head, cost reduction and reliability can be ensured, and a dry foam fire extinguishing facility can be easily configured.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a first embodiment of a fixed fire extinguishing system for a warehouse characterized by a dry structure according to the present invention. In FIG. 1, for example, two shelves 1a, 1b, 1c, 1d,... Are arranged in a vertical direction and a horizontal direction in a warehouse. In each of the load shelves 1a to 1d, a load mounted on a pallet is transported and stored by a stacker crane or the like. In this embodiment,
Each of the load shelves 1a, 1b, 1c, 1d,...
2b, 2c, 2d,...

Here, the fire extinguishing sprinkler heads 2a-
The protective compartment where 2d is installed is not limited to one cargo rack,
If necessary, a plurality of shelves arranged vertically and horizontally can be grouped, and a protection section can be set for each group to install a fire extinguisher sprinkler head. In this embodiment, a fire extinguisher sprinkler head is provided with two cargo shelves arranged in two upper and lower stages as one protection section.

The fire extinguishing sprinkler heads 2a to 2d are provided with alternate opening valves 5a and 5c every other one. That is, a simultaneous release valve 5a is provided for the fire extinguishing sprinkler head 2a installed on the load rack 1a.
A simultaneous release valve 5c is provided for the fire extinguisher sprinkler head 2c of the next luggage rack 1c provided with one fire extinguisher sprinkler head 2b installed in b.

The primary side of the simultaneous release valve 5a is connected to the water supply main pipe 12 of the fire extinguishing pump equipment by branch pipes 13a and 13c. The fire extinguishing pump equipment includes a fire extinguishing pump 11, a pressure tank 14, a pressure switch 15, a pump control panel 16, an elevated water tank 17, a motor 18, and a water source water tank 19. From the water main 12 connected to the discharge side of the fire pump 11
The branch pipes 13a, 13c are drawn out for each of the simultaneous opening valves 5a, 5c, and are simultaneously opened via the gate valves 4a, 4c.
5c is connected. The secondary sides of the simultaneous release valves 5a and 5c are connected to the respective fire extinguishing sprinkler heads 2a and 2c via gate valves 6a and 6c.

For the fire extinguishing sprinkler heads 2b and 2d of the cargo shelves 1b and 1d not provided with the simultaneous release valves 5a and 5c, the interlocking pipes 26ab, 26bc, 26cd, and 2 are provided.
Linked connection by 6de is performed. That is, the simultaneous release valve 5
The pipe from the secondary side of a is connected to the fire extinguisher sprinkler head 2b of the load shelf 1b by an interlocking pipe 26ab via a check valve 27ab. For this reason, when the simultaneous release valve 5a is opened, the fire extinguishing water from the fire extinguishing pump equipment is not loaded into the cargo rack 1.
Water will be sprinkled from the fire extinguishing sprinkler heads 2a and 2b.

The piping on the secondary side of the simultaneous release valve 5c is provided with check valves 27bc, 2 provided on the interlocking pipes 26bc, 26cd.
7cd, it is connected to the fire extinguishing sprinkler heads 2b and 2d installed on the load shelves 1b and 1d. For this reason, when the simultaneous release valve 5c is opened, the fire extinguishing water from the fire extinguishing pump equipment is discharged from the fire extinguishing sprinkler head 2.
Water will be sprayed from three of b, 2c and 2d.

Here, the fire extinguishing sprinkler heads 2a-
As 2d, an open-type sprinkler head used in ordinary sprinkler fire extinguishing equipment can be used. Moreover, you may use the foam head used by the usual foam fire extinguishing equipment. In addition, an open type head having an appropriate structure can be used. Simultaneous release valves 5a, 5c
In each of the protection compartments of the load shelves 1a and 1b in which are installed the sprinkler heads 3a and 3c for sensing. As the sensing sprinkler heads 3a and 3c, a closed sprinkler head that operates by receiving heat from a fire used in a sprinkler fire extinguishing system can be used. May be set lower, for example, at 65 ° C.

In the present invention, branch air pipes 23a and 23c branched from the air pipe 20 of the compressor 21 are connected to the sensing sprinkler heads 3a and 3c, respectively. Orifices 24a, 24c and check valves 25a, 25c are provided at branch portions of the branch air pipes 23a, 23c branched from the air pipe 20. On the secondary side of the check valves 25a and 25c, a simultaneous release valve 5 is provided.
Air cylinder valve 8 that operates as a control valve for a, 5c
a, 8c are provided.

The air cylinder valve 8a has its pilot port connected to the branch air pipe 23a on the secondary side of the check valves 25a and 25c. In the steady monitoring state, the sensing sprinkler heads 3a and 3c are not connected. Since the pipe is in the closed state, the specified air pressure supplied from the compressor 21 is filled in the pipe, and the air pressure is used as pilot pressure in the air cylinder valves 8a and 8c to maintain the valve in the closed state.

Sprinkler head 3 for detecting by fire
When a and 3c operate, the branch air pipes 23a and 23c
The air inside is exhausted, the pilot pressure on the air cylinder valves 8a, 8c is reduced, and the air cylinder valves 8a, 8c that have been closed are opened. Air cylinder valve 8
a, 8c are connected between the primary side of the simultaneous release valves 5a, 5c and the pilot port. In the steady monitoring state, the air cylinder valves 8a and 8c are in a closed state. Therefore, the supply of pressurized fire extinguishing water from the primary side to the pilot ports of the simultaneous opening valves 5a and 5c is shut off, the pilot pressure becomes zero, and the valves are closed. It is closed. On the other hand, when the air cylinder valves 8a, 8c are opened by the pressure reduction by the operation of the sensing sprinkler heads 3a, 3c, the pressurized fire extinguishing water on the primary side is supplied to the pilot ports of the simultaneous opening valves 5a, 5c to increase the pilot pressure. The valve is opened by pressure.

Gate valves 6a, 6c of simultaneous release valves 5a, 5c
The pressure switches 7a and 7c are provided on the secondary side via. The pressure switches 7a and 7c are simultaneously opened valves 5a and 5
The pressure due to the flow of fire-extinguishing water when c is opened is detected, and detection signals Ea and Ec are output to the repeater 28. In response to this detection signal, the relay 28 outputs a sprinkling detection signal to the control panel 29. , And display watering. The pressure switch 7
Instead of a and 7c, a limit switch that detects rod movement by a piston in a cylinder provided in the air cylinder valves 8a and 8c or the simultaneous release valves 5a and 5c is used.
A sprinkling detection signal may be obtained.

Further, manual release valves 9a, 9c are provided in parallel with the air cylinder valves 8a, 8c provided on the simultaneous release valves 5a, 5c, and the primary side pressurized fire extinguishing is performed by opening the manual release valves 9a, 9c on site. Water is supplied to the pilot port to allow the simultaneous opening valves 5a and 5c to be manually opened. Further, the pilot ports of the simultaneous release valves 5a and 5c are provided with a drain valve 1
0a, 10b to enable drainage.

Further, an air pipe 2 from the compressor 21
0, a pressure switch 22 is provided, and when the air pressure in the air pipe 20 falls below a specified pressure, the detection signal E2 is output to the compressor 21 to operate. When the pressure is restored to the specified pressure, the output of the detection signal E2 is stopped and the compressor is stopped. 21 is stopped. Further, the detection signal E2 of the pressure switch 22 is also given to the pump control panel 16, and the detection signal of the air pressure can be used for an interlock of the pump control as needed.

FIG. 2 is a sectional view of a specific structure of the simultaneous release valves 5a and 5c which are opened by the application of the pilot pressure in FIG. In FIG. 2, the simultaneous release valve 5 is a primary-side gate valve 4.
The piston 30 is provided on a rod 32 connecting a disk 35 for opening and closing the primary side and the secondary side, and a cylinder chamber 33 is formed outside the piston 30. The disc 35 has an outer rod 37 and is held in the illustrated closed position by a spring 36.

A pilot pipe 34 is connected to a cylinder chamber 33 outside the piston 30.
Reference numeral 4 is connected to the primary side of the simultaneous release valve 5 via an air cylinder valve 8. Also, a manual release valve 9 is connected in parallel with the air cylinder valve 8, and the manual release valve and the air cylinder valve 8 are further connected.
A drain valve 10 is provided on the secondary side of the drain valve. The simultaneous release valve 5 is in a steady monitoring state, the air cylinder valve 8 is closed by the supply of air pressure through the branch air pipe 23, and the drain of the drain valve 10 drains the secondary side of the air cylinder valve 8 into an empty pipe. Since the pressurized fire extinguishing water is not supplied to the disc 35, the disk 35 is closed by the spring 36, and in this state, the closed state is maintained by receiving the pressurized fire extinguishing water supplied from the primary side which becomes the branch pipe 13. I have.

When the air pressure in the branch air pipe 23 is reduced by the opening operation of the sensing sprinkler head, the air cylinder valve 8 is opened, the primary pressurized fire extinguishing water is supplied to the pilot pipe 34, and the pressurized fire extinguishing water cylinder chamber 33 is provided.
The piston 30 is pushed up by the introduction into the
The disc 35 is pushed up via 2 to open the flow path, and the fire extinguishing water flows from the primary side to the secondary side.

FIG. 3 shows the air cylinder valve 8 provided in FIG.
It is sectional drawing of the specific structure of a and 8c. In FIG. 3, the air cylinder valve 8 has an inlet port 41 and an outlet port 42 in a body 40, and a valve body 44 is provided so as to be openable and closable with respect to a valve seat 43 provided on a partition wall separating the two. The valve body 44 is mounted on a rod 45, and a piston 47 is fixed on the upper part of the rod 45.

The piston 47 is slidably provided in a cylinder case 46 against a return spring 48. A cylinder chamber 49 is formed above the piston 47, and the cylinder chamber 49 communicates with a pilot port 50 provided in the cylinder case 46. Air cylinder valve 8
With the air pressure of the specified pressure supplied to the pilot port 50, the piston 47 is pushed down against the spring 48, and the valve body 44 is pressed against the valve seat 43 to close the space between the inlet port 41 and the outlet port 42. . When the air pressure to the pilot port 50 is reduced by the opening operation of the sensing sprinkler head, the spring 48
7 is pushed up, and the valve body 44 is separated from the valve seat 43 to make the inlet port 41 and the outlet port 42 communicate with each other.

Next, the operation of the embodiment shown in FIG. 1 will be described. First, in the steady monitoring state, the fire-extinguishing water pressurized in the water supply main pipe 12 of the fire-fighting pump equipment is supplied to the branch pipes 13a and 13c.
Are supplied to the primary side of the simultaneous release valves 5a and 5c provided at the same time. For this reason, the pipes from the secondary sides of the simultaneous release valves 5a and 5c to the fire extinguishing sprinkler heads 2a to 2d are empty pipes containing no fire extinguishing water.

On the other hand, the sensing sprinkler heads 3a,
Air pipe 20 and branch air pipe 23 for 3c
The inside of a, 23c is supplied with air at a specified pressure, and is a dry pipe containing no fire extinguishing water. For this reason,
When installed in winter or a cold area, freezing poses a problem only in the branch pipes 13a, 13c and the water supply main pipe 12 from the primary side of the simultaneous release valves 5a, 5c to the fire extinguishing pump 11.

Usually, the simultaneous release valves 5a and 5c are connected to the load shelves 1a.
Are installed not in the space where warehouses are arranged but in a trough installed on the floor or under the floor of the warehouse.
a, the simultaneous opening valves 5a, 5a,
The possibility of freezing is extremely low as compared with the secondary pipe of 5c.

The piping from the primary side of the simultaneous release valves 5a and 5c to the fire extinguishing pump 11 has a relatively short piping length, and the piping configuration is simpler than that of the load rack 1a. It is possible to easily take measures to prevent freezing such as wrapping, and it is possible to more reliably achieve prevention of freezing of water for fire extinguishing. Next, with reference to FIG. 1, an operation when a fire occurs in the cargo rack will be described. For example, if a fire occurs in the luggage stored in the load rack 1c, the sensing sprinkler head 3c receives heat from the fire and opens, the compressed air in the branch air pipe 23c is discharged, and the air cylinder valve 8c is closed. The pilot pressure is reduced to open.

When the air cylinder valve 8c is opened, pressurized fire extinguishing water on the primary side of the simultaneous release valve 5c is supplied to the pilot port, and the simultaneous release valve 5c is supplied by pressurizing the pilot port.
c is opened to supply fire extinguishing water from the primary side to the secondary side.
The fire extinguishing water passed by opening the simultaneous opening valve 5c is supplied to the fire extinguisher sprinkler head 2c, which is provided with the load shelves 1c where the fire has occurred as a protective section, and is sprinkled, and at the same time, the interlocking pipes 26bc, 26cd are checked. Valve 27bc, 27c
d, the water is also supplied and sprinkled to the fire extinguishing sprinkler heads 2b and 2d installed on the adjacent cargo shelves 1b and 1d provided in the branch pipes 13b and 13d.

When the simultaneous release valve 52 is opened, the water supply main 1 is opened.
2 is detected by the pressure switch 15 of the pressure tank 14, a detection signal E1 is given to the pump control panel 16,
The operation of the fire pump 11 is started by the start of the motor 18, whereby water is continuously sprinkled from the fire extinguishing sprinkler heads 2a and 2b. Therefore, the fire extinguishing sprinkler head 2c for the cargo rack 1c in which a fire has occurred.
At the same time, water is sprayed from both sides of the fire extinguisher sprinkler heads 2b and 2d so as to surround the load shelves 1c where the fire has occurred, thereby suppressing the fire and preventing the spread of the fire by wetting the surroundings at an early stage. Make sure.

FIG. 4 shows a second embodiment of a fixed fire extinguishing system for a warehouse according to the present invention, which is characterized by a dry structure. In this embodiment, water is further supplied to a simultaneous opening valve provided for each branch pipe. A main control valve is provided on the main pipe side. In FIG. 4, the parts after the branch pipes 13a, 13c branched from the water supply main pipe 12 are the same as those in the embodiment of FIG. 1, and the simultaneous release valves 5a, 5c are connected to the branch pipes 13a, 13c.
And air cylinder valves 8a, 8c for controlling the simultaneous release valves 5a, 5c to open under pressure by reducing the pressure of the branch air pipes 23a, 23c due to the opening operation of the sprinkler heads 3a, 3c for detection due to fire.

In the second embodiment, a simultaneous opening valve 52 and a motor-operated valve 54 constituting a general control valve are provided at a portion of the water supply main pipe 12 reaching the branch pipes 13a and 13c.
The simultaneous release valve 52 is provided on the water supply main pipe 12, and an electric valve 54 is provided between the primary side and the pilot port.
A manual release valve 55 is connected in parallel with the electric valve 54.

The electric valve 54 is output from the repeater 28 when the repeater 28 receives a fire detection signal E3 generated by the fire detectors 56a to 56d installed in the protection section including the shelves 1a to 1d. In response to the control signal E4, the fire extinguishing water on the primary side is supplied to the pilot port of the simultaneous release valve 52 to perform the opening operation. In the second embodiment in which the simultaneous opening valve 52 and the motor-operated valve 54 are provided as the general control valve in FIG.
The primary side of the simultaneous release valves 5a and 5c provided in the a and 13c is inserted, and the secondary side is an empty pipe as in the first embodiment of FIG. The simultaneous opening valve 52 constituting the general control valve is initially set to a closed state when the supply of the pressurized fire extinguishing water on the primary side is cut off by closing the electric valve 54.

Next, the operation when a fire occurs in the cargo rack will be described. For example, a fire occurs in the luggage stored in the cargo rack 1a, the sensing sprinkler head 3a receives heat from the fire and opens, the compressed air from the branch air pipe 23a discharges the air cylinder valve 8a, and the primary air cylinder valve 8a is opened. When the pressurized fire extinguishing water on the side is added to the pilot port of the simultaneous opening valve 5a, the simultaneous opening valve 5a is also opened, and the fire extinguishing sprinkler head 2a is opened from the secondary branch pipe 13a.
Supply water for fire extinguishing and start watering.

Water is also sprinkled from the interlocking pipe 26ab through the branch pipe 13b and from the fire extinguishing sprinkler head 2b of the adjacent cargo rack 1b. Further, the pressure switch 7a is operated in response to the pressure of the fire-extinguishing water due to the opening of the simultaneous opening valve 5a, and the detection signal Ea is output to the repeater 28. .

However, in this state, the water supply main 12
Since the simultaneous opening valve 52 which constitutes the general control valve provided in the closed state is in a closed state, the simultaneous opening valves 52a, 5a, 5
Only the pressurized fire extinguishing water filled in the pipe up to the primary side of c is discharged, the pressure of the fire extinguishing water is reduced therein, the pressure switch 7a is restored, and the detection signal Ea disappears. Subsequently, assuming that the fire detector 56a provided in the protection section of the load shelf 1a in which the fire occurred gives an alarm, a fire detection signal E3 is given to the repeater 28, and in response to this, the repeater 2
Reference numeral 8 outputs a control signal E4 to the motor-operated valve 54 to open the motor-operated valve 54. When the electric valve 54 is opened, the pressurized fire extinguishing water on the primary side of the simultaneous opening valve 52 is supplied to the pilot port,
The simultaneous release valve 52 is opened, and the supply of fire extinguishing water from the water supply main pipe 12 is started. When the simultaneous release valve 52 is opened, the pressure of the water supply main pipe 12 is reduced.
5, the detection signal E1 is given to the pump control panel 16, and the operation of the fire extinguishing pump 11 is started by starting the motor 18, whereby water is continuously sprinkled from the fire extinguishing sprinkler heads 2a and 2b. .

The second embodiment in which a simultaneous opening valve 52 and a motor-operated valve 54 are provided in the water supply main line of FIG. 4 as a general control valve which is opened and controlled by a fire detection signal from a fire detector,
This is equivalent to having a function as a pre-operation type fire extinguishing system that ran a single interlock based on a fire detection signal.
The way of entering the fire-extinguishing water in the steady monitoring state is the same as in the first embodiment of FIG.
Since it is limited to the primary side of the simultaneous release valves 5a and 5c provided in c, an antifreeze elevated can similarly be expected.

FIG. 5 is an explanatory view of a third embodiment of a fixed fire extinguishing system for a warehouse according to the present invention. In the third embodiment, the configuration itself is the same as that of the second embodiment in FIG. 4, but the control of the simultaneous opening valve 52 and the control valve 54 constituting the general control valve is performed by a fire detector from the fire detector. In addition to the detection signal, a detection signal of a decrease in air pressure from the pressure switch 22 provided in the branch air pipe 23 is added to the interlock condition,
When both a fire detection signal and a detection signal of a decrease in air pressure of the air pipe are obtained, the general control valve is controlled to be opened.

In FIG. 5, the simultaneous opening valve 52 and the motor-operated valve 54 constituting the general control valve provided in the water supply main pipe 12 are the same as those in the second embodiment shown in FIG. Fire detectors 56 provided in each of the protection sections of the shelves 1a to 1d
In addition to the fire detection signal E3 from a to 56d, a pressure reduction detection signal E2 from a pressure switch 22 provided in the air pipe 23 from the compressor 21 is further supplied.

In the repeater 28, the fire detection signal E3
And the logical product of the air pressure reduction detection signal E2 and
When both are obtained, the control signal E4 is output to the motor-operated valve 54 to perform opening control, whereby the pressurized fire extinguishing water on the primary side is supplied to the pilot port to open the simultaneous opening valve 52. Further, in the third embodiment of FIG. 5, the fire extinguishing water in the steady monitoring state is filled only up to the primary side of the simultaneous opening valve 52 provided in the water supply main pipe 12, and from the secondary side of the simultaneous opening valve 52. Fire extinguisher sprinkler heads 2a-2
All pipes leading to d are empty pipes. Therefore, the effect of preventing freezing of the fire extinguishing water can be further ensured as compared with the second embodiment of FIG.

Next, the operation in the event of a fire in the third embodiment of FIG. 5 will be described. Assuming that a fire has occurred in the luggage currently stored in the load shelf 1a, the heat generated by the fire causes the sensing sprinkler head 3a to open and release the pressurized air from the branch air pipe 23a, and the air cylinder valve 8
a opens. However, since the primary side of the simultaneous release valve 5a is an empty pipe, the simultaneous release valve 5a maintains a closed state even if the primary side and the pilot port communicate with each other by opening the air cylinder valve 8a. On the other hand, the pressure of the branch air pipe 23 from the compressor 21 is gradually affected by the pressure reduction due to the opening operation of the sensing sprinkler head 3a via the orifice 24a, and the pressure switch 22 is operated with a certain time delay to reduce the air pressure. Detection signal E
2 is output to the repeater 28.

Subsequently, the fire detector 56a installed in the protection section of the cargo rack 1a where the fire has occurred issues an alarm, and outputs a fire detection signal E3 to the repeater 28. The repeater 28 is connected to the decompression detection signal E2 from the pressure switch 22 and the fire detector 5
By receiving both the fire detection signal E3 from 6a, the control signal E4 is output to the motor-operated valve 54, and the motor-operated valve 54 is opened.

When the electric valve 54 is opened, the pressurized fire extinguishing water on the primary side is supplied to the pilot port of the simultaneous opening valve 52,
The simultaneous release valve 52 is opened, and the fire extinguishing water flows from the primary side to the secondary side. At this time, since the simultaneous release valve 5a provided corresponding to the load shelf 1a in which the fire has occurred has already been opened, the fire extinguishing water passes through the simultaneous opening valve 5a to connect the fire extinguishing sprinkler head 2a and the interlocking pipe 26a. Then, the water is supplied to the adjacent fire extinguishing sprinkler head 2b, and watering is started.

Further, the pressure of the water supply main pipe 12 by opening the simultaneous release valve 52 is reduced by a pressure switch 15 provided in the pressure tank 14.
And the detection signal E1 is supplied to the pump control panel 16, so that the operation of the fire extinguishing pump 11 is started by the activation of the motor 18, and the fire extinguishing sprinkler head 2 is continuously operated.
Sprinkle fire extinguishing water from a and 2b. Here, the pump control panel 16 is provided with a pressure switch 15 provided in the pressure tank 14.
The detection signal E1 of the pressure decrease of the water supply main pipe 12 due to
8, the operation of the fire pump 11 has been started.
Signal E2 from the pressure switch 22 for detecting the pressure reduction
And the detection signal E from the pressure switch 15 of the pressure tank 14
When both 1 are obtained, the operation of the fire pump 11 by starting the motor 18 may be started.

FIG. 6 is an explanatory view of a fourth embodiment of the fixed fire extinguishing system for a warehouse according to the present invention. In the fourth embodiment, the simultaneous release valves 5a and 5 of the branch pipe in the first embodiment of FIG.
In place of the air cylinder valves 8a and 8c provided for the control of c, a reduced-pressure open type simultaneous release valve that operates by supplying air pressure is used. Further, in the first embodiment of FIG. 1, the simultaneous opening valve is provided for every other protection section, but in the fourth embodiment of FIG. 6, it corresponds to the one-to-one protection section. A simultaneous release valve is provided.

In FIG. 6, the pressurized-open simultaneous release valves 60a, 60b, 6 correspond to the protection compartments of the load shelves 1a, 1b, 1c,.
0c is provided. This pressurized open type simultaneous release valve 60a-
60c is a simultaneous release valve 5a in the first embodiment of FIG.
5c, and has a specific structure as shown in FIG. 2, for example. For the simultaneous release valves 60a to 60c, pressure-reducing open simultaneous release valves 62a, 62b, and 62 are used as control valves.
c is provided.

For example, taking the pressure-reducing open simultaneous release valve 62a as an example, a branch air pipe 23a from the air pipe 20 of the compressor 21 is provided with an orifice 63a and a check valve 64a.
Is connected to the primary side of the pressure reducing and opening simultaneous release valve 62a through the opening. The secondary side of the decompression and opening simultaneous release valve 62a is connected to a pilot port of the pressurization and opening simultaneous release valve 60a by a pilot pipe 74a.

The pilot pipe 74a further includes a drain valve 10a.
Is connected. The pilot port of the pressure reducing and opening type simultaneous release valve 62a is connected to the sensing sprinkler head 3a provided in the protection section of the load shelf 1a via the check valve unit 66a. Further, a manual release valve 65a is connected between the primary side of the pressurized open type simultaneous release valve 60a and the pilot port.

The structure of the pressurized-open simultaneous release valve 60a and the decompression-closed simultaneous open valve 62a is the same as that of the pressurized-open simultaneous release valves 60b, 60c provided corresponding to the load shelves 1b, 1c. The same applies to the mold simultaneous release valves 62b and 62c.
The check valve units 66a, 66b, and 66c are unitized with four check valves, and are connected to the sensing sprinkler heads of the other protection compartments in the horizontal direction with respect to the vertical connection by interlocking piping. , Pressure reducing open simultaneous release valve 62
The opening operation is performed by the interlocking of a to 62c.

For example, a check valve unit 66b connected to a decompression open type simultaneous release valve 60b provided corresponding to the load rack 1b
, The left check valve is connected to the output port of the check valve unit 66a of the adjacent load shelf 1a by the interlocking pipe 68ab. For this reason, when the sensing sprinkler head 3a provided on the load shelf 1a is operated, the pilot pressure of the pressure reducing and opening type simultaneous release valve 62a is reduced, and at the same time, the adjacent load is linked via the interlocking pipe 68ab and the check valve unit 66b. Simultaneous decompression type open valve 62 provided corresponding to shelf 1b
The pilot pressure of b is also reduced, and the decompression open type simultaneous release valve 62
a and 62b are simultaneously opened.

The check valve port on the right side of the check valve unit 66b is connected to the output port of the check valve unit 66c of the pressure reducing and opening type simultaneous opening valve 62c provided corresponding to the load rack 1c via the interlocking pipe 68bc. It is connected to the. For this reason, when the sprinkler head 3c for sensing provided in the cargo rack 1c is opened by a fire, the pressure reducing and opening type simultaneous opening valve 62c is opened.
At the same time as the pilot pressure of
Also, the pilot pressure of the pressure reducing and opening type simultaneous opening valve 62b is reduced via the check valve unit 66b, and the simultaneous opening valves 62b, 6
2c will be opened.

This point is the same for the check valve unit 66a provided corresponding to the load shelf 1a and the check valve unit 66c provided corresponding to the load shelf 1c. Pipes 68ab, 68bc, 6
8cd is interconnected. Further, a pressure switch 7a is provided on the secondary side of the pressurized open type simultaneous release valves 60a to 60c.
7c are provided, and the pressure due to the flow of the fire extinguishing water by opening the pressurized open type simultaneous release valves 60 to 60c is detected, and the detection signals Ea to Ec are output to the repeater 28. The sprinkler heads 2a to 2c can be displayed for watering.

FIG. 7 is a sectional view of a specific structure of the pressure-reducing and opening simultaneous release valves 62a to 62c provided in the fourth embodiment of FIG. In FIG. 7, the pressure reducing open simultaneous release valve 62 has a primary side connected to the branch air pipe 23, and the secondary side connected to a pilot pipe 74 connected to the pilot port of the pressurized open simultaneous release valve 60. A disk 76 that separates the primary side and the secondary side is provided in the pressure reducing and opening type simultaneous release valve 62, and a piston 80 provided in a cylinder chamber 78 is connected to the disk 76, and the piston 80 flows by a spring 82. It is pushed to a position that closes the road. A branch air pipe 70 to which the sensing sprinkler head 3 is connected is connected to the cylinder chamber 78. Further, a ventilation hole 86 is provided from the primary side to the cylinder chamber 78.

In the steady monitoring state, the pressurized air is supplied from the primary side branch air pipe 23 and the ventilation holes 86 are provided.
Compressed air is introduced into the cylinder chamber 78 from above, and the branch air pipe 70 is filled with compressed air since the sensing sprinkler head 3 is closed. For this reason, the upper and lower pressures of the piston 80 are equal, and the piston 80 is pressed by the spring 82 and is pushed down to the position shown in the drawing. And the secondary side is closed.

Sprinkler head 3 for detecting by fire
Is opened, the compressed air in the branch air pipe 70 is discharged, the cylinder chamber 78 is depressurized, and the primary side compressed air is introduced below the piston 80. 80 is pressed and moves upward. As a result, the disc 76 is opened, the primary side and the secondary side are communicated, the pressurized air in the primary side branch air pipe 23 is supplied to the secondary side pilot pipe 74, and the pressurized air connecting the pilot pipe 74 is connected. The pilot air pressure is supplied to the pilot port of the open simultaneous release valve, and the pressurized open simultaneous release valve 60 is opened by pressurization.

Next, the operation of the fourth embodiment shown in FIG. 6 will be described. In the steady monitoring state, the pressurized-open simultaneous release valve 60
Fire extinguishing water is contained up to the primary side of a to 60c, and the secondary side is an empty pipe. In addition, a decompression open type simultaneous release valve 62a
-62c, the air piping 2 of the compressor 21
0 is supplied to the primary side, the air pressure is supplied from the pilot port to the branch air pipes 70a to 70c, and since the sprinkler heads 3a to 3c for sensing are in the closed state, the internal pressure of the air pipe is regulated to the specified pressure. Therefore, upon receiving the pilot pressure exceeding the specified pressure, the pressure-reducing and opening type simultaneous opening valves 62a to 62c maintain the valve closed state.

Next, the operation when a fire occurs in the luggage stored in the load rack 1b will be described. When the fire occurs, the sprinkler head 3b for sensing is opened, the pressurized air in the branch air pipe 70b is discharged, and the check valve unit 66b
The pilot pressure of the pressure-reducing open simultaneous release valve 62b is reduced via the valve, the pressure-reducing open simultaneous release valve 62b is opened, and the air pressure on the primary side is supplied to the pilot port of the pressure-opening simultaneous release valve 60b. Upon receiving the pilot pressure by the air pressure, the pressurized open type simultaneous release valve 60b is opened, and the fire extinguishing water flows from the primary side to the secondary side, and the fire extinguishing sprinkler head 2b
Water from

When the sensing sprinkler head 3b is opened, the pressurized open molds provided corresponding to the load shelves 1a, 1c located on both sides via the interlocking pipes 68ab, 68bc and the check valve units 66a, 66c. Simultaneous release valve 60
The pilot pressures a and 60c are reduced, and the depressurized open type simultaneous release valves 62a and 62c are also opened.
Pressurized air is supplied to a and 60c as pilot pressure.
Accordingly, the pressurized-open simultaneous release valves 60a and 60c also open, and the fire extinguishing water flows from the primary side to the secondary side, and the fire extinguishing heads 2a and 2c located on both sides of the load shelf 1b where the fire occurred.
Sprinkle water for fire extinguishing.

Of course, the pressurized-open simultaneous release valves 60a-60
When the fire extinguishing water flows through the opening operation of c, the pressure of the water supply main pipe 12 is reduced, the pressure switch 15 of the pressure tank 14 is operated to output the detection signal E1, and the pump control panel 16 starts the motor 18 By operating the fire pump 12, the fire extinguishing water is continuously sprinkled from the fire extinguishing sprinkler heads 2a to 2c.

Further, the pressure-reducing open simultaneous release valves 62a to 62a shown in FIG.
In the fourth embodiment using 62c, as in the first embodiment of FIG. 1, the fire extinguishing water uses a pressurized open simultaneous release valve 60a to 60c.
60c is open to the primary side.
Since there is no fire extinguishing water in the piping in the space where the cargo shelves are located on the secondary side of 0a to 60c, freezing of the fire extinguishing water can be sufficiently prevented. Furthermore, since the pipes on the sensing sprinkler heads 3a to 3c side are all air pipes, there is no problem of freezing due to the fire extinguishing water.

In the embodiment shown in FIG. 6, the air cylinder valve of the first embodiment shown in FIG. 1 is replaced with a pressure-reducing open simultaneous release valve. Similarly, the second embodiment shown in FIG. In the same manner as in the third embodiment, the air cylinder valve may be replaced with a decompression open type simultaneous release valve.

[0076]

As described above, according to the present invention, since the sensing head piping is all air piping filled with compressed air, there is no problem of freezing in the piping system of the sensing sprinkler head. Therefore, even in winter or cold regions, it is possible to reliably detect and operate a fire.

The piping system for the fire extinguishing sprinkler head contains water for fire extinguishing up to the primary side of the simultaneous opening valve of the branch pipe. However, the piping from the secondary side of the simultaneous opening valve to the fire extinguishing sprinkler head is empty. The piping up to the primary side of the simultaneous release valve is located in the floor or a trough under the floor, not in a warehouse space where shelves are liable to freeze, and the possibility of freezing is extremely low even if fire water is put in. Also, it is easy to take measures to prevent freezing by wrapping urethane or the like around the pipe, and it can be reliably operated without freezing even in winter or in cold regions.

Also, an integrated control valve is provided at a portion of the water supply main line before branching off the branch pipe, and the pipes from the general control valve to the primary side of the simultaneous opening valve of the branch pipe are made empty so that fire-fighting water is supplied. The number of piping systems used can be further reduced, and the effect of preventing freezing can be further enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is a structural sectional view of the simultaneous opening valve of FIG. 1;

FIG. 3 is a structural sectional view of the air cylinder valve of FIG. 1;

FIG. 4 is an explanatory view of another embodiment of the present invention provided with a general control valve.

FIG. 5 is an explanatory view of another embodiment of the present invention in which a central control valve is double-interlocked.

FIG. 6 is an explanatory view of another embodiment of the present invention in which the control valve of FIG. 1 is replaced by a pressure reducing open type simultaneous release valve.

FIG. 7 is a sectional view of the structure of the pressure reducing and opening type simultaneous opening valve of FIG. 6;

FIG. 8 is an explanatory view of a conventional facility.

[Explanation of symbols]

 1a to 1d: shelf 2a to 2d: fire extinguisher sprinkler head 3a to 3d: sensing sprinkler head 5a to 5d: simultaneous release valve 8a to 8d: air cylinder valve (control valve) 11: fire extinguishing pump 12: water supply main line 13a to 13d: branch pipe 20: air pipe 22: pressure switch 23a to 23d: branch air pipe 26ab to 26de: interlocking pipe 27ab to 27de: check valve 52: general control valve 56a to 56d: fire detector 60a to 60d: pressurized Open simultaneous release valves 62a to 62d: Decompression open simultaneous release valves (control valves) 66a to 66d: Check valve units

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location A62C 37/38 A62C 37/38

Claims (9)

[Claims] 1. A fixed fire extinguishing system for warehouses in which a plurality of shelves are arranged in a vertical and horizontal direction, wherein a closed type which is provided for each protection section including one or a plurality of shelves and is opened by a fire. A sensing sprinkler head, an open fire extinguisher sprinkler head provided for each protection section including one or a plurality of cargo shelves, and sprinkling fire-extinguishing water; and the sensing sprinkler branched from a compressor facility for each protection section. An air pipe for supplying pressurized air to the head, and control for introducing the pressurized air in the air pipe as pilot pressure to close the valve, and opening the valve by reducing the pilot pressure by opening the sensing sprinkler head. A valve, which is provided in a branch pipe branched from a water supply main pipe of a pump facility, and supplies pressurized fire extinguishing water from the fire extinguishing pump facility to a primary side. When the secondary side is connected to the fire extinguishing sprinkler head, the primary side is connected to the pilot port via the control valve, and the primary side pressurized fire extinguishing water is received as pilot pressure by opening the control valve. A fire extinguisher sprinkler head, and a simultaneous opening valve for passing fire extinguishing water through the fire extinguishing sprinkler head. 2. A fixed fire extinguishing system for a warehouse according to claim 1, wherein a water supply main line in front of said branch pipe is opened by a control signal from the outside to pressurize a simultaneous release valve of said branch pipe. Fixed fire extinguishing equipment for warehouses, equipped with a general control valve for passing fire extinguishing water. 3. A fixed fire extinguishing system for a warehouse according to claim 2, wherein said general control valve is in a closed state in a regular monitoring state, and is provided with a branch pipe connected to a secondary side up to a simultaneous opening valve. A fixed fire extinguishing facility for a warehouse, characterized in that a pipe is filled with pressurized fire extinguishing water, and the opening is controlled by a fire detection signal from a fire detecting device installed in the protection section. 4. A fixed fire extinguishing system for a warehouse according to claim 2, wherein said general control valve is closed in a regular monitoring state, and fills a primary side main water supply pipe with pressurized fire extinguishing water. The inside of the pipe from the secondary side to the simultaneous release valve of each branch pipe is empty, and furthermore, a fire detection signal from a fire detection device installed in the protection section and a pressure reduction detection by a pressure switch provided in the air pipe. Fixed fire extinguishing equipment for warehouses, which is controlled to open when both signals are received. 5. An electric control system according to claim 3, wherein said general control valve is electrically driven by an external control signal to open and close the valve. A fixed fire extinguishing facility for a warehouse, comprising: a valve; and a pressurized-open simultaneous release valve that is opened when the pressurized fire-extinguishing water on the primary side is supplied to a pilot port by the electric control valve. 6. A fixed fire extinguishing system for a warehouse according to any one of claims 1 to 5, wherein an air cylinder valve which is opened by depressurization of an air pipe is used as said control valve. Fixed fire extinguishing equipment for warehouse. 7. A fixed fire extinguishing system for warehouses in which a plurality of cargo shelves are arranged in the vertical and horizontal directions, wherein the closed type is provided for each protection section including one or a plurality of cargo shelves and is opened by a fire. A sensing sprinkler head, an open fire extinguishing sprinkler head that is provided for each protection section including one or more cargo shelves and sprays fire extinguishing water, and an air pipe branched from the compressor equipment for each protection section. The air pipe is connected to the primary side, and a pilot port is connected to the sensing sprinkler head via the air pipe, and the valve is opened by reducing the pilot pressure by the opening operation of the sensing sprinkler head to open to the secondary side. A pressure reducing open type simultaneous release valve that supplies air pressure, and a branch pipe that is branched from the water supply main pipe of the pump equipment, and the fire extinguishing port is provided on the primary side. While supplying pressurized fire-extinguishing water from the pumping equipment, the secondary side is connected to the fire-extinguishing sprinkler head, and a pilot port is connected to the secondary side of the pressure-reducing open type simultaneous release valve, and the control valve is opened. A fixed fire extinguishing system for warehouses, comprising: a pressurized open type simultaneous release valve that receives air pressure as pilot pressure, opens a valve, and passes fire extinguishing water to the fire extinguishing sprinkler head. 8. The fixed fire extinguishing system for a warehouse according to claim 1, wherein an air pipe connecting a pilot port of the control valve to a sensing sprinkler head of the protection section is installed in an adjacent protection area. Each sprinkler for fire extinguishing is connected to the air pipe of the detected sprinkler head via a check valve by an interlocking pipe, and the control valve of the adjacent protection section is interlocked when the sensing sprinkler head of its own protection section is activated. Fixed fire extinguishing equipment for warehouses, characterized by sprinkling fire extinguishing water from the head. 9. The fixed fire extinguishing equipment for a warehouse according to claim 1, wherein the control valve and the simultaneous opening valve are provided for at least every other protection section, and the control valve and the simultaneous opening valve are provided. A fixed fire extinguishing system for a warehouse, wherein a secondary side of a simultaneous opening valve of the other protective sections located on both sides is connected to a fire extinguishing sprinkler head via a check valve in a protective section not provided.