JPH0316694Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is designed to check whether the fire extinguishing equipment operates normally in so-called open type sprinkler equipment or foam fire extinguishing equipment where the fire extinguishing head is not filled with extinguishing agent. This invention relates to an inspection device for fire extinguishing equipment.

(Prior Art) Conventionally, for example, foam fire extinguishing equipment includes a plurality of fire extinguishing heads that discharge foam extinguishing agent onto the ceiling of a parking lot, etc.
A plurality of fire detection heads are installed to detect fire, and each fire extinguishing head is connected to the secondary side of the simultaneous release valve via piping, and each fire detection head is connected to the simultaneous release valve via the sensing piping. is connected to the sensing side of the

In such foam fire extinguishing equipment, under normal conditions, the primary side of the simultaneous release valve and the sensing piping are filled with pressurized foam fire extinguishing agent, and the fire detection head detects a fire and activates thermally. When the fire extinguishing foam flows out of the fire extinguishing head, the fire extinguishing foam is supplied to the fire extinguishing head by controlling the simultaneous release valve and communicating the primary and secondary sides of the simultaneous release valve.

By the way, as an inspection device for such fire extinguishing equipment, the sensing piping of the simultaneous release valve is connected to the drain pipe via an inspection valve that is manually opened and closed. The fire extinguishing foam will flow out from the sensing pipe to the drain pipe by opening the valve for the fire extinguisher. Therefore, in the same way as above, the simultaneous release valve is controlled, the primary and secondary sides of the simultaneous release valve are communicated, and the fire extinguishing foam is supplied to the fire extinguishing head, and the fire extinguishing foam is discharged from the fire extinguishing head. That's what I was doing.

However, in the case of such inspection equipment for fire extinguishing equipment, as it discharges fire extinguishing foam directly from the extinguishing head in the same way as in the case of an actual fire, vehicles or equipment located in the discharge area must be moved during inspection. Furthermore, there was a problem in that post-processing such as removing the extinguishing agent released after the inspection was required, and the inspection work required a considerable amount of time and effort.

(Purpose of the invention) The present invention was made in view of the above problems, and the fire extinguishing head is not filled with extinguishing agent.
It is an object of the present invention to provide a so-called open type sprinkler system or foam fire extinguishing system that is equipped with an inspection device that can be easily inspected by remote control.

(Structure of the device) In order to achieve this purpose, the present invention includes a plurality of fire extinguishing heads that discharge extinguishing agent, a simultaneous release valve that opens in the event of a fire and supplies the extinguishing agent to the extinguishing head, and a simultaneous release valve. In fire extinguishing equipment, which consists of an automatic alarm valve that opens by detecting a drop in pipe pressure due to the opening of The connecting pipe between the alarm valve and the drain pipe is connected to the drain pipe using a branch pipe, and an inspection valve that can be opened by remote control is installed in the branch pipe, and by opening the inspection valve,
The extinguishing agent in the connecting pipe is drained to the drain pipe, reducing the pressure inside the pipe and opening the automatic warning valve.

(Example) The figure is an explanatory diagram showing an embodiment of the present invention.

First, to explain the structure, a fire pump device is installed on the basement floor of the building to supply a pressurized fire extinguishing agent. In this fire pump device, 1 is a fire extinguishing pump, 2 is a motor for driving the fire extinguishing pump 1, and the motor 2 is operated and stopped by a control panel 3. There is a water source tank 4 under the floor of the fire pump 1.
A suction pipe 5 of the fire extinguishing pump 1 is connected to the water source tank 4, and a main pipe 6 is connected to the discharge side of the extinguishing pump 1. The main pipe 6 is connected to a main pipe 8 via a mixer 7, which will be described later, and the main pipe 8 is vertically raised inside the building.
An automatic alarm valve 9 is installed on each floor of the building where the main pipe 8 is installed, and the primary side of the automatic alarm valve is connected to the main pipe 8, and the secondary side is connected via a connecting pipe 10. and is connected to the primary side of the simultaneous release valve 11. Further, from the connecting pipe 10, a branch pipe 27 for inspection is provided with a valve 12 for inspection that can be opened and closed by remote control.
It is connected to the drain pipe 13 via. The automatic alarm valve 9 detects a drop in the internal pressure of the connecting pipe 10 that is the secondary side or an outflow of the extinguishing agent from the connecting pipe 10 and opens the valve provided inside, thereby shutting down the primary and secondary sides. communicate. Therefore, when the inspection valve 12 is opened by remote control and the extinguishing agent in the connecting pipe 10 is drained into the drain pipe 13, the automatic alarm valve 9 is activated and the pressurized extinguishing agent is discharged from the primary side to the secondary side. supply to. 2
A pressure switch 6 detects the operation of the automatic alarm valve 9 and outputs a contact signal. From the secondary side of the simultaneous release valve 11, via a branch pipe 14 provided in the ceiling,
It is connected to a plurality of fire extinguishing heads 15 provided on the ceiling surface. 16 is a fire detection head installed on the ceiling surface, and a plurality of fire detection heads 16 are installed on the ceiling surface.
is connected to the sensing side of the simultaneous release valve 11 via a sensing piping 17, and when the fire sensing head 16 detects a fire, the extinguishing agent in the sensing piping 17 is released to the outside through the fire sensing head 16. When the extinguishing agent flows out, the simultaneous release valve 11 is operated, and the primary and secondary sides of the simultaneous release valve communicate with each other, and the extinguishing agent is discharged from the extinguishing head 15. Note that an inspection valve 18 that is manually opened and closed is provided at the end of the sensing pipe 17.

In addition, a pressure tank 20 is installed in the fire pump device on the basement floor B1F, and piping is connected to the pressure tank 20 from the main pipe 6. Pressure is introduced to compress the internal air within the pressure tank 20, and the internal pressure within the main pipe 6 is maintained at a predetermined pressure or higher by this compressed air. 21 is a pressure switch that closes the contact when the tank pressure of the pressure tank 20 drops below a predetermined pressure, and transmits the contact signal to the control panel 3.
to drive the motor 2 and operate the fire extinguishing pump 1. Reference numeral 22 denotes a foam stock tank for storing foam stock solution, which is equipped with a rubber diaphragm inside, and pressurized water from the fire extinguishing pump 1 is supplied to the rubber diaphragm via a pressurized water supply pipe 23, and the foam stock solution is stored through the pressure of the rubber diaphragm. Pressurize the foam stock solution in the tank. The pressurized foam stock solution is fed into the mixer 7 via the stock solution supply pipe 24. The mixer 7 has one input connected to the main pipe 6,
The foam stock solution is mixed with fire extinguishing water at a predetermined mixing ratio and is supplied to the main pipe 8 as a fire extinguishing agent. A priming tank 25 is provided on the left side of the fire extinguishing pump 1, and constantly supplies priming water to the extinguishing pump 1.

Next, the operation will be explained.

Under normal conditions, the internal air in the pressure tank 20 is compressed, and the compressed air maintains the internal pressures in the main pipes 6, 8, and connecting pipes 10 at a predetermined pressure or higher. When inspecting fire extinguishing equipment, operate the operation section provided on the control panel 3 to open the inspection valve 1.
2 is opened, the extinguishing agent filled in the connecting pipe 10 under pressure is drained into the drain pipe 13 via the branch pipe 27 for inspection. When the extinguishing agent flows out from the connecting pipe 10, a pressure drop in the connecting pipe 10 is detected and the automatic alarm valve 9 is activated, and the primary side and the secondary side of the automatic alarm valve 9 communicate with each other, causing the pressure to drop in the connecting pipe 10. The pressurized extinguishing agent in the main pipe 8 is fed into the main pipe 8. Due to the outflow of the pressurized extinguishing agent in the main pipe 8, the tank pressure of the main pipe 6 and the pressure tank 20 connected to the main pipe 6 decreases, and when the tank pressure falls below a predetermined pressure, the pressure switch 21 is activated. The contact signal of this pressure switch 21 is given to the pump control panel 3, which drives the motor 2 to operate the fire extinguishing pump 1. Therefore, without operating the simultaneous release valve 11, the activation of the fire pump devices such as the fire pump 1 and the motor 2 is confirmed, and the fire extinguishing agent discharged from the drain pipe 13 is collected and converted into fire extinguishing water and foam concentrate. The mixing ratio of can be measured. After the predetermined time has passed, the control panel 3
The inspection operation of the fire extinguishing equipment can be restored by closing the inspection valve 12 and stopping the operation of the fire extinguishing pump 1.

In addition, a timer and a printer are installed in the control panel 3, and the inspection valve 12 is operated in conjunction with the timer operation, and the operating state of the fire extinguishing equipment at the time of inspection, that is, each voltage before and after the motor 2 is driven. , current and pressure switch 21,2
By configuring the printer to automatically record the operating status of items such as 6, etc., it is possible to inspect the fire extinguishing equipment unattended and periodically.

In addition, in the embodiment shown in the figure, we have described an inspection device for fire extinguishing equipment that discharges fire extinguishing foam into a parking lot to extinguish the fire. It can be applied as an inspection device for fire extinguishing equipment equipped with so-called open type sprinkler equipment, in which fire extinguishing water is sprayed from a plurality of open type heads installed in the fire extinguisher.

(Effects of the invention) As explained above, according to the invention, there are a plurality of extinguishing heads that discharge extinguishing agent, and a system that connects the primary side and the secondary side and simultaneously supplies extinguishing agent to the extinguishing heads in the event of a fire. A release valve, an automatic alarm valve that operates by detecting a drop in the pressure inside the connecting pipe connected to the primary side of the simultaneous release valve and supplies extinguishing agent to the simultaneous release valve, and an automatic alarm valve. In fire extinguishing equipment consisting of a fire extinguishing pump device that supplies pressurized extinguishing agent to the primary side, a branch pipe for inspection equipped with an inspection valve that opens and closes by remote control is connected to the simultaneous release valve and the automatic alarm valve. By connecting to the pump, fire pump devices such as pumps and motors can be easily and reliably inspected by remote control of the inspection valve without operating the simultaneous release valve.

Furthermore, since the inspection can be carried out without actually discharging extinguishing agent from the fire extinguishing head, preparatory work before the inspection and post-treatment after the inspection are no longer necessary, and the efficiency of the inspection work can be improved.

[Brief explanation of the drawing]

The figure is an explanatory diagram showing an embodiment of the present invention. 1: Fire pump, 2: Motor, 3: Control panel,
4: Water source tank, 5: Suction pipe, 6: Main pipe, 7: Mixer, 8: Main pipe, 9: Automatic alarm valve, 10: Connection pipe,
11: Simultaneous release valve, 12: Inspection valve, 13:
Drain pipe, 14: Branch pipe, 15: Fire extinguishing head, 1
6: Fire detection head, 17: Detection piping, 18:
Valve, 20: Pressure tank, 21, 26: Pressure switch, 22: Foam stock solution tank, 23: Pressurized water supply pipe, 24: Stock solution supply pipe, 25: Priming tank, 27: Branch pipe for inspection.

Claims (1)

[Claims for Utility Model Registration] A plurality of fire extinguishing heads that discharge extinguishing agents, a simultaneous release valve that opens in the event of a fire and supplies the extinguishing agent to the extinguishing heads, and a connection to the primary side of the simultaneous release valves. In a fire extinguishing system consisting of an automatic alarm valve that opens by detecting a drop in pipe pressure due to the simultaneous opening of the valve, and a fire pump device that pressurizes and supplies extinguishing agent to the primary side of the automatic alarm valve, For inspection, a connecting pipe between the simultaneous release valve and the automatic alarm valve is branched and connected to a drain pipe by a branch pipe, and the branch pipe is opened by remote control to lower the pressure inside the connecting pipe and open the automatic alarm valve. A fire extinguishing equipment inspection device characterized by having a valve installed.