JP5004629B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

  The present invention relates to a sprinkler fire extinguishing facility, and more particularly, to a treatment for a water discharge delay when a fire occurs.

Conventionally, as a sprinkler fire extinguishing equipment, there is a pre-actuated sprinkler fire extinguishing equipment that opens a valve by a fire signal from a sensor (see, for example, Patent Document 1). In such a pre-operated facility, the secondary side pipe is filled with slightly pressurized air using a compressor. Further, the secondary side pipe is provided with a pressure switch for detecting a pressure drop in the pipe, so that leakage of pressurized air from the pipe and the head can be detected. The dry pre-actuated equipment in which pressurized air is filled in this pipe is installed in a place where water loss is disliked because only air is discharged even if the head is expelled.
JP-A-6-86837

  However, in the case of a dry type in which pressurized air is filled in the secondary side pipe, there is a problem of delayed water discharge in the event of a fire. That is, when pressurized air is filled in the secondary side piping, even if the fire detector operates and the pre-actuated valve opens and water is sent, there is pressurized air in the secondary side piping. Therefore, water enters the pipe only to a certain extent, and it takes time to fill the water. In particular, since water is supplied only from the pre-acting valve side which is the base end side of the pipe, as a result, the pressurized air is pushed into the end side of the pipe by the water pressure. For this reason, when the head is operated on the terminal side, only air is first discharged from the head, and it takes time until the water discharge starts, resulting in a delay in water discharge. For this reason, in the pre-actuated sprinkler fire extinguishing equipment, there is a problem that it is necessary to perform a design that copes with a delay in water discharge, such as increasing the pipe diameter or increasing the number of simultaneous opening of the head.

  The present invention has been made to solve such problems, and in the event of a fire, a sprinkler that can prevent water discharge delay in the event of a fire by supplying water also from the terminal side of the secondary side pipe. The purpose is to provide fire extinguishing equipment.

The sprinkler fire extinguishing equipment according to the present invention is provided on the primary side of the pre-actuating valve, and is provided with a primary side pipe disposed in a vertical direction in the building, a base end side of the primary side pipe and a pump and a water tank. A pressure water supply device, a secondary side pipe provided on the secondary side of the pre-actuating valve , disposed in the building in a horizontal direction and filled with pressurized air, and a sprinkler head attached to the secondary side pipe; In a pre-actuated sprinkler fire extinguishing equipment provided with a fire detector provided in the same protection area as the sprinkler head, an auxiliary water tank provided on the roof of the building, and provided on the building separately from the primary side pipe, Is connected to the auxiliary water tank, and is filled with a filled water for fire charging, and a normally closed on-off valve for connecting the fire charging water pipe and the end of the secondary side pipe, When the fire detector is activated, Causes released, to open the pre-actuated valve, the water from the water and the auxiliary water tank from the water tank from both ends of the secondary pipe and water supply, respectively, intended to filled with water the secondary side in the pipe is there.

The sprinkler fire extinguishing equipment according to the present invention is provided on the primary side of the pre-actuating valve, and is provided with a primary side pipe disposed in a vertical direction in the building, a base end side of the primary side pipe and a pump and a water tank. A pressure water supply device, a secondary side pipe provided on the secondary side of the pre-actuating valve , disposed in the building in a horizontal direction and filled with pressurized air, and a sprinkler head attached to the secondary side pipe; In a pre-actuated sprinkler fire extinguishing equipment provided with a fire detector provided in the same protection area as the sprinkler head, an auxiliary water tank provided on the roof of the building, and provided on the building separately from the primary side pipe, Is connected to the auxiliary water tank and has a normally closed water supply valve, connecting the fire water charging pipe and the end of the secondary side pipe, and connecting the secondary side pipe A three-way valve with a normally closed mouth, When the sensor is activated, Rutotomoni is connected with the three-way valve of the secondary-side is allowed piping of fire filled with water opening the connection port of the pipe, it opens the said pre actuation valve and the water supply valve, the secondary pipe The water from the said water tank and the water from the said auxiliary water tank are each supplied from both ends, and the inside of secondary side piping is filled.

  In the present invention, when a fire occurs, the fire detector detects the fire and outputs a fire signal to, for example, a fire receiver. The fire receiver opens a signal for opening the pre-acting valve while opening the on-off valve in the warning area corresponding to the fire detector. Thereby, water will be simultaneously supplied from both ends into the secondary side pipe, and the time for filling the secondary side pipe can be shortened. Also, since water is filled from both ends, the pressurized air in the secondary pipe is pushed into the center of the pipe, so for example when the sprinkler head at the end of the secondary pipe operates Water can be discharged immediately without discharging pressurized air, and fire can be extinguished quickly.

Embodiment 1. FIG.
FIG. 1 is an explanatory diagram of piping of a sprinkler fire extinguishing facility according to Embodiment 1 of the present invention. In the figure, reference numeral 1 denotes a pre-actuated water flow detection device (hereinafter referred to as a pre-actuation valve). A primary side pipe 2 is provided on the primary side with the pre-acting valve 1 as a reference, and a pressurized water supply device 5 including a pump 3 and a water tank 4 is provided on the base end side of the primary side pipe 2. Reference numeral 6 denotes a secondary side pipe which is provided on the secondary side of the pre-actuating valve 1 and is filled with pressurized air. Filling the secondary side pipe 6 with pressurized air is performed by an air compressor 7. The air compressor 7 is connected to an end portion of an air pipe 9 provided through a check valve 8 from the vicinity of the secondary side of the pre-acting valve. Reference numeral 10 denotes a sprinkler head attached to the secondary side pipe 6. A fire sensor 11 is provided in the same protection area as the sprinkler head 10. The sprinkler fire extinguishing equipment of this embodiment is a pre-actuated sprinkler fire extinguishing equipment in which the pre-actuating valve 1 is opened by a fire signal from the fire detector 11. Reference numeral 12 denotes an auxiliary water tank provided on the roof of the building, and stores water supplied from the pressurized water supply device 5 through the primary side pipe 2. Note that a check valve 13 and a water stop valve 14 are provided at a portion of the primary side pipe 2 connected to the auxiliary water tank 12. Reference numeral 15 denotes a fire charging pipe, one end of which is connected to the water supply port 12a of the auxiliary water tank 12 through the check valve 16, and the pipe is filled with water. As shown in the figure, the water charging pipe 15 at the time of fire is provided on the opposite side of the primary side pipe 2 in the building, and is connected to the end of the secondary side pipe 6 through a normally closed on-off valve 17. ing. Reference numeral 18 denotes a fire receiver as a control panel, to which a fire detector 11, an on-off valve 17, and a pre-actuating valve 1 are connected via a signal line. When the fire detector 11 is operated, the fire receiver 18 receives a fire signal and controls the open / close valve 17 and the pre-actuated valve 1 to be opened.
Note that the primary side pipe 2 and the fire charging pipe 15 are both pipes arranged in the vertical direction in the building, whereas the secondary side pipe 6 is a pipe arranged in the horizontal direction. It is. In addition, a water stop valve is provided at the lower end side of the fire charging pipe 15 so that the fire charging pipe 15 can be filled by closing the water stop valve. It has become.

Next, operation | movement of the sprinkler fire extinguishing equipment of FIG. 1 is demonstrated.
When a fire occurs, the fire detector 11 installed in the vicinity of the fire occurrence point detects the fire and outputs a fire signal to the fire receiver 18. When the fire receiver 18 receives the fire signal, the fire receiver 18 opens the pre-actuating valve 1 in the protection area of the fire detector 11 that has generated the fire signal, and opens the on-off valve 17. As a result, the water charged in the primary side pipe 2 is supplied to the secondary side pipe 6 through the pre-actuating valve 1 and the auxiliary water tank 12 is filled with water in the fire charging pipe 15. The water that has been used will be supplied. That is, water is supplied to the secondary side pipe 6 from both sides of the start end portion and the end end portion. For this reason, the secondary side pipe 6 is filled with water in a short time. Then, when the sprinkler head 10 in the vicinity of the place where the fire has occurred is opened, fire-extinguishing water is radiated from the sprinkler head 10.

  As described above, in the first embodiment, since water is simultaneously supplied from both ends into the secondary side pipe 6 in the event of a fire, the time for filling the secondary side pipe can be shortened. it can. Further, since water is charged from both ends of the secondary side pipe 6, the pressurized air in the secondary side pipe 6 is pushed into the center of the pipe, so that, for example, a sprinkler head at the end of the secondary side pipe 6 When is operated, water is discharged immediately without discharging the pressurized air, and the fire can be extinguished quickly. Further, the water from the auxiliary water tank 12 provided on the roof of the building is supplied to the terminal side of the secondary side pipe, and therefore a power source (pump) is not required.

Embodiment 2. FIG.
FIG. 2 is an explanatory diagram of piping of a sprinkler fire extinguishing facility according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the water charging pipe 15 at one end connected to the auxiliary water tank 12 is not always filled with water but is an empty pipe. It is. For this reason, the water charging pipe 15 at the time of fire includes a water supply valve 21 that is normally closed near the secondary side of the check valve 16. The on-off valve 22 that connects the water charging pipe 15 and the end of the secondary side pipe 6 is constituted by a three-way valve, and normally the connection port on the secondary side pipe 6 is normally closed, and The valve element is held in a state where the primary side and the secondary side of the piping 15 for charging water at the time of fire communicate with each other.

  The fire receiver 18 receives a fire signal when the fire detector 11 is operated, and is connected to the secondary side pipe 6 side of the on-off valve (three-way valve) 22 in the protection area where the fire detector 11 is operated. And the pre-actuating valve 1 and the water supply valve 21 are opened. The opening / closing of the on-off valve (three-way valve) 22 is, as a first step, first connecting the valve body so that the connection port on the secondary side pipe 6 side and the secondary side of the fire charging water pipe 15 are connected. Switch. Thereby, it is possible to discharge the pressurized air filled in the secondary side pipe 6 through the fire charging water pipe 15. Then, as a second stage, the valve body is switched so that the on-off valve (three-way valve) 22 is connected to the connection port on the secondary side pipe 6 side and the primary side of the water charging pipe 15 at the time of fire. Water is supplied to the secondary pipe 6 side. Preferably, when the signal from the fire detector 11 reaches a pre-alarm level lower than the fire level, the first stage of the on-off valve (three-way valve) 22 is performed and the water supply valve 21 is opened as described above. Thus, the water charging pipe 15 at the time of fire is charged at an early stage. Thereby, at the time of a fire, water can be rapidly supplied from both ends of the secondary side pipe 6.

Embodiment 3. FIG.
In the first embodiment, even when water is supplied from both ends of the secondary pipe 6 in the event of a fire, pressurized air is present in the pipe from the beginning. May accumulate. In order to prevent this point, an air vent valve may be provided in the central portion of the secondary side pipe 6 which is not opened at normal pressure but is opened when water flows in and the pressure increases. In this case, it is desirable to provide a film that allows only gas to pass through the air vent valve so that water does not flow out.

Embodiment 4 FIG.
In the above-mentioned embodiment, the water for the fire water charging pipe is filled with the water in the auxiliary water tank provided on the roof using a drop. For example, a pressurized water supply device including a pump and a water tank Two units may be provided in the building. In this case, the pressurized water supply device will also be provided at the lower end of the fire charging pipe, and as with the normal primary pipe, it will be charged from the first floor (or basement) of the building toward the roof. Will be watered. Even in this way, it is possible to supply water from both ends of the secondary pipe. In this case, no auxiliary water tank is required.
Moreover, when only one pressurized water supply apparatus can be installed, the lower end of the fire charging pipe may be extended in the horizontal direction and connected to the primary side of the pump. In this case, the on-off valve 17 or the on-off valve 22 is filled with water.

The piping explanatory drawing of the sprinkler fire extinguishing equipment which concerns on Embodiment 1 of this invention. The piping explanatory drawing of the sprinkler fire extinguishing equipment concerning Embodiment 2 of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pre-acting valve, 2 Primary side piping, 3 Pump, 4 Water tank, 5 Pressurized water supply device, 6 Secondary side piping, 7 Air compressor, 8 Check valve, 9 Air piping, 10 Sprinkler head, 11 Fire detector, 12 Auxiliary water tank, 12a Water supply port, 13 Check valve, 14 Stop valve, 15 Fire refilling pipe, 16 Check valve, 17 Open / close valve, 18 Fire receiver,
21 Water supply valve, 22 Open / close valve (three-way valve).

Claims (2)

A primary side pipe provided on the primary side of the pre-acting valve and arranged vertically in the building; a pressurized water supply device comprising a pump and a water tank provided on the base end side of the primary side pipe; and a pre-acting valve A secondary pipe installed on the secondary side , horizontally arranged in the building and filled with pressurized air, a sprinkler head attached to the secondary pipe, and provided in the same protection area as the sprinkler head In a pre-actuated sprinkler fire extinguishing system equipped with a fire detector
An auxiliary water tank on the roof of the building,
In the building, provided separately from the primary side pipe, one end is connected to the auxiliary water tank, and the water-filled pipe for fire charging,
An on-off valve that is normally closed to connect the pipe for water charging during fire and the end of the secondary side pipe;
When the fire detector is activated, the open / close valve is opened, the pre-actuated valve is opened, and water from the water tank and water from the auxiliary water tank are respectively supplied from both ends of the secondary pipe. Sprinkler fire extinguishing equipment that supplies water and fills the secondary piping. A primary side pipe provided on the primary side of the pre-acting valve and arranged vertically in the building; a pressurized water supply device comprising a pump and a water tank provided on the base end side of the primary side pipe; and a pre-acting valve A secondary pipe installed on the secondary side , horizontally arranged in the building and filled with pressurized air, a sprinkler head attached to the secondary pipe, and provided in the same protection area as the sprinkler head In a pre-actuated sprinkler fire extinguishing system equipped with a fire detector
An auxiliary water tank on the roof of the building,
In the building, provided separately from the primary side pipe, one end is connected to the auxiliary water tank, and the water charging pipe at the time of fire having a normally closed water supply valve,
The rechargeable piping for fire and the end of the secondary side pipe are connected, and a three-way valve that normally closes the connection port of the secondary side pipe,
When the fire detector has operated, Rutotomoni is connected with the three-way valve of the secondary-side is allowed piping of fire filled with water opening the connection port of the pipe, opens the said pre actuation valve and the water supply valve, the secondary Sprinkler fire extinguishing equipment, wherein water from the water tank and water from the auxiliary water tank are supplied from both ends of the side pipe, respectively , to fill the secondary side pipe.

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