JPH0446772Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an automatic fire extinguishing system that operates a fire extinguishing pump device, supplies extinguishing fluids such as extinguishing water and extinguishing agent under pressure, and sprays them from a fire extinguishing head. This invention relates to an automatic inspection device for fire extinguishing equipment that is inspected on a regular basis.

(Prior art) Conventionally, automatic inspection equipment for fire extinguishing equipment has been designed to periodically operate a fire extinguishing pump equipment based on commands from a control device and automatically check the operating status of the extinguishing pump equipment. A start time was set and fire extinguishing equipment was automatically inspected once a month or once every six months.

However, the fire pump devices that make up such fire extinguishing equipment, that is, the fire pumps, the motors that drive the fire pumps, etc., normally stop operating, and when a predetermined inspection time is reached, The fire pump equipment suddenly starts operating, causing a third party who is present near the fire extinguishing equipment, especially the fire pump equipment, and does not know that the operation is due to an inspection of the fire extinguishing equipment, to mistakenly believe that the pump has started due to a fire. There was a problem in that it caused unnecessary confusion.

(Purpose of the invention) The present invention was made in view of the above problems, and is a fire extinguishing equipment that, when inspecting the fire extinguishing equipment, calls attention to the operation of the fire extinguishing pump device by display, buzzer, or sound in advance. The purpose is to provide an automatic inspection device.

(Structure of the invention) In order to achieve this purpose, the invention provides fire extinguishing water,
Multiple fire extinguishing heads that spray extinguishing fluid such as extinguishing agent, a fire pump device that supplies extinguishing fluid under pressure to the fire extinguishing heads, and data on the operating status of the fire pump device by periodically operating the fire pump device. In an automatic inspection device for fire extinguishing equipment, which is configured with a control device for processing, an alarm means operates before the start of operation of the fire pump device according to a command from the control device and warns the operation of the fire pump device by display, buzzer, or voice. is installed near the fire pump equipment.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is an explanatory diagram showing an example of fire extinguishing equipment in which the automatic inspection device of the present invention is used.

First, to explain the configuration, a fire pump device is installed in the basement B1F. In this fire pump device, 1 is a fire pump, 2 is a motor that drives the fire pump 1, and the motor 2 is connected to the control device 3. Runs and stops according to commands. A priming tank 4 is provided on the left side of the fire extinguishing pump 1, and constantly supplies priming water to the extinguishing pump 1. A water source tank 5 is provided under the floor of the fire pump 1, and a suction pipe 6 of the fire pump 1 is suspended from the water source tank 5. Moreover, the inside of the main pipe 7 is connected to the discharge side of the fire pump 1. 8 is a pressure tank, main pipe 7
The internal pressure of the main pipe 7 obtained by operating the fire pump 1 is introduced to compress the internal air, and this compressed air raises the internal pressure of the main pipe 7 to a predetermined pressure or higher. keeping. Fire pump 1
The main pipe 7 drawn out from the building runs vertically inside the building, and alarm valves 9 are installed on each floor of the building.
The branch pipe 10 is connected via the branch pipe 10. Branch pipe 10
is piped in the ceiling and connects a plurality of fire extinguishing heads 11 installed on the ceiling surface. Furthermore, branch pipe 1
The end of the pipe No. 0 is connected to a drain pipe 13 via a test valve 12 at the end of the pipe.

Next, equipment and detectors provided for inspecting such fire extinguishing equipment will be explained. First, a pump operation caution light 15 is installed above the fire pump system so that it can be easily seen from a distance as a warning means for warning the operation of the fire pump system during automatic inspection. Activates before the fire pump equipment starts operating,
The words "Inspection in progress" will be illuminated to alert you. 1
6 is an insulation resistance meter, which measures the insulation resistance of the excitation coil when the motor 2 is stopped. 17 is a drain valve, which is operated by remote control from the control device 3;
It is opened at the start of automatic inspection and water in the pressure tank 8 is drained. 18 is a pressure switch, which closes its contacts when the tank pressure of the pressure tank 8 drops below a predetermined pressure. A pressure gauge 19 measures the tank pressure of the pressure tank 8. Detection information from these detectors, that is, the insulation resistance meter 16, the pressure switch 18, and the pressure gauge 19, is provided to the control device 3.

FIG. 2 is a block diagram showing an embodiment of the automatic inspection device according to the present invention, together with equipment supplies and detectors.

First, to explain the configuration, 3 is a control device;
A detector, that is, an insulation resistance meter 1 is connected via a connector 20.
6. Inputs information from the pressure switch 18 and pressure gauge 19, and controls the equipment, that is, the warning means including the pump operation caution light 15, the drain valve 17, and the motor 2. 21 is an output section, and 22 is an input section, which is connected to the connector 20 by a signal line.
Reference numeral 23 denotes a control unit that performs data processing based on information from the detector collected via the input unit 21 and also instructs automatic inspection control under program control of a microcomputer. 24 is a power supply unit that supplies power; 25 is a clock circuit that outputs time information to the control unit 23; 26 is a motor drive detection section, which detects the start and stop of operation of the motor 2. Reference numeral 27 denotes an alarm unit equipped with a buzzer and a lamp, and is operated by a command from the control unit 23. 2
Reference numeral 8 denotes a printer, which prints inspection items together with inspection execution times in response to instructions from the control unit 23.

FIG. 3 is a float chart showing automatic inspection control of the control section 23 in FIG. The inspection operation will be explained with reference to FIG. 3. In block a, a series of inspection operations are performed by regular automatic starts based on time information from the clock circuit 25.
First, in block b, the periodic inspection and the start time of the periodic inspection are printed. In block c, an insulation resistance meter 16 is used to measure the excitation coil of the motor 2.
For example, if the value of the insulation resistance meter 16 is abnormal due to water leakage, etc., proceed to block P, and check the item ``abnormal insulation resistance value'' and the current value. The time at which the abnormality was determined is printed on the printer 28. In block q,
Restore fire extinguishing equipment to its initial state,
Finish the inspection operation.

Furthermore, when it is determined that the measured value of the insulation resistance meter 16 is normal in the judgment of block c, block d
Proceed to , output to the alarm means and turn on the pump operation caution light 1.
Turn on 5. In block e, the drain valve 17 is opened to drain the tank water in the pressure tank 8. In block f, the items drain valve open and the time when the drain valve was opened are printed. In block g, the tank pressure in the pressure tank 8 decreases with the opening of the drain valve in block e, so that the detection operation of the pressure switch 18 after a predetermined period of time is determined, and the detection signal from the pressure switch 18 is determined. If not obtained, it is determined that there is an abnormality and the process proceeds to blocks p and q, where the items ``pressure switch non-operation'' and the time at which the abnormality was determined are printed and the inspection operation is completed. When the detection operation of the pressure switch 18 is determined in block q, the process proceeds to block h, where the motor 2 is driven and the fire extinguishing pump 1 is started. In block i, the items ``pump start'', the pump start time, and the measured value of the pressure gauge 19 at the time of pump start are printed, and in block j, the drain valve 17 is closed. In block k, as the drain valve 17 in block j is closed, the tank pressure in the pressure tank 8 increases over time, so that the measured value of the pressure gauge 19 after a predetermined period of time is a predetermined abnormal pressure value. If the measured value of the pressure gauge 19 is below a predetermined pressure, it is determined that it is abnormal and proceeds to blocks p and g, where the item pressure abnormality and the time at which the abnormality was determined are printed. and completes the inspection operation. If it is determined in block k that the tank pressure in pressure tank 8 is normal, the process proceeds to block m, where motor 2 is stopped and fire pump 1 is turned off.
stop operating. In block n, the pump operation caution light 15 is turned off. Furthermore, the process proceeds to blocks p and q, where the inspection completion and completion time items are printed, and the inspection operation is completed.

Incidentally, if it is determined that there is an abnormality in the judgments in blocks c, g, and k, a buzzer, a lamp, etc. provided in the alarm section 27 may be activated to call attention.

The automatic inspection device of the present invention shown in Fig. 2 has been explained using the fire extinguishing equipment shown in Fig. 1, that is, the water extinguishing equipment that sprays fire extinguishing water from the fire extinguishing head. The invention can also be applied to a so-called automatic inspection system for foam fire extinguishing equipment, in which a fire extinguishing agent mixed at a ratio of 1 is supplied under pressure to a foam head, and the foam fire extinguishing agent is sprayed from the foam head.

Furthermore, in addition to the pump operation caution light, a buzzer or sound may be used to call attention.

(Effects of the Invention) As explained above, according to the invention, in an automatic inspection device for fire extinguishing equipment which is composed of a plurality of fire extinguishing heads which spray extinguishing liquid such as extinguishing water and extinguishing agent, a fire pump unit which pressurizes and supplies the extinguishing liquid to the fire extinguishing heads, and a control device which periodically operates the fire pump unit and processes data on the operating status of the fire pump unit, a warning means (pump operation warning light, etc.) is sounded before the fire pump unit starts operating in response to a command from the control device, thereby indicating in advance the start of operation of the fire pump unit to third parties who are near the fire pump unit and are unaware that the fire extinguishing equipment is being inspected, and drawing their attention, it is possible to safely carry out automatic inspection of the fire extinguishing equipment.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of fire extinguishing equipment in which the automatic inspection device of the present invention is used, Fig. 2 is a block diagram showing an embodiment of the present invention together with equipment and detectors, and Fig. 3 is a 3 is a flowchart showing an example of inspection control according to the embodiment of FIG. 2; 1... Fire pump, 2... Motor, 3... Control device, 4... Priming tank, 5... Water source tank, 6...
Suction pipe, 7... Main pipe, 8... Pressure tank, 9...
Alarm valve, 10... Branch pipe, 11... Fire extinguishing head, 12... Pipe end test valve, 13... Drain pipe, 1
5...Pump operation caution light, 16...Insulation resistance meter,
17...Drain valve, 18...Pressure switch, 19...
...Pressure gauge, 20...Connector, 21...Output section,
22...Input unit, 23...Control unit, 24...Power supply unit, 25...Clock circuit, 26...Motor drive detection unit, 27...Alarm unit, 28...Printer.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of fire extinguishing heads that spray extinguishing fluid, a fire pump device that supplies the fire extinguishing fluid under pressure to the fire extinguishing heads, and a fire pump that periodically operates the fire extinguishing pump device. In an automatic inspection device for fire extinguishing equipment, which comprises a control device that processes data on the operating status of the device, the device operates before the start of operation of the fire pump device according to a command from the control device to alert the operation of the fire pump device. 1. An automatic inspection device for fire extinguishing equipment, characterized in that an alarm means is provided near the fire extinguishing pump device.