JPS59200669A - Automatic inspection apparatus of fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic inspection device for fire extinguishing equipment, which automatically checks whether or not the fire extinguishing equipment is in good condition when an earthquake is detected.

Conventionally, in fire extinguishing equipment that supplies pressurized fire extinguishing water to the sprinkler head and sprays it by operating a fire extinguishing pump when a fire occurs, automatic spotting Vl is used to maintain the equipment in a state where it can operate normally. Therefore, the pumps are operated periodically, for example once every month, to measure the operating status of the pumps and the pressure inside the pipes, and to process the data as inspection data. There is no inspection function in place for when an earthquake occurs, so when an earthquake occurs, equipment is patrolled to check for abnormalities.

However, it is difficult to thoroughly check the operating conditions of equipment during inspections conducted on patrol, and manual pump operation tests show that if there is an abnormality in the piping equipment, water leaks from damaged parts and causes water damage. There was a risk that the damage would be further aggravated due to pump operation.

The present invention has been made in view of such conventional problems.
) Therefore, in the event of an earthquake, automatic inspections of the equipment condition will be carried out to ensure that the equipment can operate normally.
: The purpose is to provide an automatic inspection device for fire extinguishing equipment.

In order to achieve this objective, the present invention connects a seismic sensor installed at a predetermined position of fire extinguishing equipment to a control processing device that performs periodic automatic inspection control and data processing that indicates the equipment status at the time of inspection. When an earthquake is detected by a seismic device, the condition of the fire extinguishing pump and the pressure inside the sparrow are measured by the detector,
Controlling measurement data I11! DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described with reference to 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 facility is installed on the 31st floor of the basement of the building.In this fire pump facility, 1 is a fire pump, 2 is a motor that drives the fire pump, and motor 2 is a motor that drives the pump Run and stop with panel 3
3 can be done. A water source water tank 4 is provided under the floor of the fire pump 1, and a suction pipe 5 of the fire pump 1 is connected to the water source water tank 4, and a wooden pipe 6 is connected to the discharge side of the fire pump 1. The main pipe 6 is connected vertically inside the building. A branch pipe 8 is connected to each floor of the building where the main pipe 6 is raised via an alarm valve 7, and a sprinkler head 9 installed on the surface of the bowl is connected to the branch pipe 8 installed in the ceiling. Connected and further branched 8 pipe beds? It is connected to a drain pipe 12 via a lid untested valve 10.

In addition, a pressure tank 14 is installed in the fire pump equipment in the basement B'IF, and a piping connection is made to the pressure tank 14 from the main pipe 6. The internal pressure in the main pipe 6 is introduced to compress the internal air, and the compressed air maintains the internal pipe pressure in the main pipe 6 at a predetermined pressure or higher at which the sprinkler head 9 can operate.

Further, a priming water tank 16 is provided on the left side of the fire pump 1, and constantly supplies priming water to the fire pump 1.

Next, to explain the equipment and detectors installed to inspect such fire extinguishing equipment, there is a flow rate test arrangement 18 on the discharge side of the fire extinguishing pump 1 leading to the water source water tank 4.
A motorized valve 20 and a flowmeter 22 are provided in this flow rate test pipe 18, so that the performance of the fire pump 1 can be tested by listening to the motorized valve 20. In addition, in order to detect the pump state of the fire pump 1, a pressure gauge 24 for detecting suction pressure P1 and a pressure gauge 26 for detecting discharge pressure P2 are provided. A pressure switch 30 is provided which closes the contacts when the pressure of the tank 28 and the tank falls below a certain pressure.

In addition, in order to detect the pressure of the piping installed on each floor, an alarm valve pressure drop 32 and an alarm valve pressure switch 34 are provided on the secondary side of the alarm valve 7, and a pipe bed test is installed at the bottom and end of the branch pipe 8. Valve 1
A tube bed pressure gauge 36 is provided to detect a primary pressure of zero.

Furthermore, in the fire extinguishing equipment using the automatic inspection device of the present invention, the seismic sensor 38 is installed at the nF near the top floor, which is the location where the greatest shaking occurs when an earthquake occurs.

Of course, the installation location of the seismic sensor 38 is not limited to the floor near the roof of the building, but it is desirable to install it near the location where fire extinguishing equipment is most susceptible to damage.

FIG. 2 shows an embodiment of the automatic inspection device according to the present invention, which is installed in a fire extinguishing facility, together with equipment and a detector.
] It is a tank.

First, to explain the configuration, 40 is a control processing device that performs automatic inspection control and data processing by inspection by program control of the microcomputer 1.
A and 42b connect equipment and detectors to be controlled during inspection. 114 is a connector 42a,
42b is the input/output interface of the signal processing unit 1i'i L/l/j, and 46 is a central processing unit (hereinafter referred to as CPtJ) of a microcomputer that performs inspection control and data processing according to a predetermined control program. A repeater transmission control section 48, a pulse input section 50, a control output section 52, and an analog input section 54 are connected between the input/output interface 44 and the CPU 46.

Here, the repeater transmission control unit 48 is provided at each corner to output a 1ζth control signal J that opens the pipe bed test I-valve 10 of each floor shown in FIG. 1 and performs pump actual load operation. The pulse input section 50 has a function of inputting a pulse signal that is a contact output from a detector that detects the equipment status, and the control output section 52 has a function to call a relay that is connected to the equipment state. The analog input section 54 has a function of outputting a control signal for the equipment, and further has a function of converting an analog detection signal from a detector capable of detecting the state of the equipment into a digital signal and inputting the digital signal.

Further, the CPU 46 is given a time signal from the clock units 1 to 56, and when the automatic mode of the control processing device 40 is selected, automatic inspection is performed at a fixed period, for example, every month, based on the time signal. become. Furthermore, CP
The U46 includes a message display section 58 that displays a 1ζ message in response to an inspection operation, a system status display section 60 that displays the system status during inspection, and a switch RY/UD data operation section 62 that is necessary for equipment inspection. CPtJ4
A printer 64 for outputting the 6r-processed inspection data, and an alarm buzzer 66 for emitting an alarm when a 13 BΩ limit is detected during inspection are provided.

Next, to explain the equipment and detectors connected to the control processing device 40, first, the connector/I2a side is connected to the fire extinguishing equipment shown in Figure 1. and detector are connected.

(58 is a starting device of the pump control 5183, 70 is also a stopping device of the pump control panel 3, and the fire pump 1 is started and stopped by a contact signal based on a control signal of the control processing device/'! 40. 72 tel.
The voltmeter 74 detects the voltage of the pump control panel 3, and the ammeter 74 detects the current during pump operation.
1. Output as an analog signal of -20 mA 4'L
3, 7 (:3 is when an abnormality in the pump control panel 3 is detected and
K l1tj (Nj) Trouble detector that outputs machine 'T, 78 is a star operation detector that outputs a contact signal indicating the pump star operation time, 80 detects the pump rotation speed and outputs it as an analog signal of 4 to 20 mA. It is a tachometer.

Liquid level alarm 82°84.8 shown following the tachometer 80
6 outputs a liquid level warning signal as a contact signal when the water level of the elevated water tank provided on the roof, the priming water tank 16 in the basement, and the water source water tank 4 are outside a certain level range. Further, 88 is a fire alarm, and a transfer contact from a fire receiver is used, and when a fire is detected during automatic inspection, the control processing unit @ 40 cancels the inspection based on the output of the fire alarm 88, Pump operation will be switched to respond to fire outbreaks.

Furthermore, following the fire alarm 88, there is a pressure gauge 24 that detects the suction pressure P1 shown in the fire extinguishing equipment in Figure 1, and a discharge pressure P1.
2, a pressure gauge 28 for detecting tank pressure PT, and a pressure switch 30 for the pressure tank 14 are shown, and furthermore, an electric valve 20 and a flow meter 22 installed in the outflow test pipe 1ε3 are shown. It will be done.

On the other hand, on the connector 42b side, there are
A relay 90 indicated by -n is connected, and each relay 90 has an alarm valve pressure switch 34 provided at each corner, an alarm valve pressure δ13
2. The pipe bed test valve 10 and the pipe bed pressure gauge 36 are connected, and the pipe bed ass 1 to the valves 10 are operated by the relay transmission control unit 48 provided in the control processing device 40, Also, input the measured values of the pipe pressure from each detector connected to the repeater.

Furthermore, the connector 4-2 b side (here, the seismic sensor 38 is connected to the signal line, and the seismic sensor 38 is connected to the earthquake JI where the acceleration is above a certain level.
It is activated when +Q rib is detected and outputs an earthquake detection signal to the control processing device 40.

Next, the operation of the embodiment shown in FIG. 2 will be explained.

Fig. 3 is a flowchart showing the control of pump operation test by the automatic inspection device in Fig. 2) 11 processing, and the manual start by turning on the test mode selection switch shown in block a]-1 or the clock shown in block A series of pump operation tests are performed with periodic automatic start based on the time of day signal from unit 56.

That is, when an inspection is started manually or automatically, the pump operation test and the date, time, and minute, which are inspection items, are printed in block C, and the pump is stopped in block d (the pump control panel 3 is turned off). Voltage,
and suction pressure P detected by pressure gauges 24, 26 and 28
1. Measure and print the discharge pressure horn P2 and tank pressure PT. This voltage and pressure measurement process is carried out by the control processing device 4
From 0, power is supplied to the detector to be measured, and the detected value obtained by the power supply is read and data processing is performed.

When the measurement of the inspection data as the initial value in block d is completed, the start-up control of the pump is performed in block e, the pump start-up time is printed in the subsequent block f, and the start-up is confirmed in determination block q. At h, print the pump start time Δl 1illl. The pump start-up time is measured by the switching time from the star connection to the delta connection during Tanabata on the pump control panel 3.

Next, use block i to determine that the startup time is within a certain period of time, and proceed to block j. One minute after the pump startup, the current of the pump control panel and the pump The measurement value including the rotation speed is measured and printed, and when the pump operation status inspection data processing is completed, a block is created to perform stop control to stop the pump after 30 seconds. Perform printing. Furthermore, go to block m to d3 and after 30 seconds have passed since the pump stopped, ・I measure and print the pump status and pressure, and finally print the pump operation test item l- and the end time in block n. Let's do it. Of course, if startup confirmation is not obtained in block 0.1 or the startup time is longer than a certain time, proceed to block O and proceed to pump operation test 1 when the alarm buzzer 66 sounds and the pump starts normally. Report what was not done.

In addition to the automatic inspection function shown as an example in Figure 3,
The control processing device shown in the figure is equipped with an automatic inspection function at the time of earthquake detection shown in the flowchart of FIG.

That is, even during the inspection period, the control processing device 40 receives power supply and remains in an operating state, and the control processing device 4
If the seismic sensor 38 outputs an earthquake detection signal due to the occurrence of an earthquake in the zero operating state, an interrupt routine for inspection control processing based on earthquake detection shown in FIG. 4 is executed.

That is, when an interrupt due to earthquake detection is received, the year, month, day, hour, and minute of the earthquake occurrence is printed in block A, and it is determined that the inspection is not in progress in another block 1B of r11, and 1 - is printed in block C. Then, in block C, after a predetermined period of time has passed, the voltage of the pump control panel 3, the pump suction pressure P1, and the pump output pressure P2 are determined.
．． and tank pressure PT to each detector.
Activate the sensor to read the detected value and print the measured value.

When the measurement process of the pump status in block C is completed, a predetermined reference value is compared with the measured value n1 in judgment block D, and if there is an abnormality in the measured value, -1-1 is detected. Proceed to E and in block E) Newsletter → F
-66 is sounded to notify the pump of abnormality, and the abnormal item 1i is printed. Swamp R111 with this one discrimination block
If there is no abnormality in liQ, proceed to block F and perform 10
Medium r41J installed on each floor by Tsuku F-J processing
The Ei 90 is called up one after another to measure the pipe pressure and distinguish between different traps. That is, the block ``No, 1 repeater is called, and the called repeater 90 is called 4'.
The pressure inside the pipe detected by the alarm valve pressure gauge 32 and the pipe bed pressure gauge 36 connected to is input, data processed and printed, and the subsequent judgment block H compares the measured value of block G with the reference value. It is determined whether the value is normal or not, and if there is an abnormality in the measured value, an alarm is issued and the abnormal location is printed in block I.Of course, if the measured value is abnormal, the process proceeds to judgment block J and the next step. The NO, 2 repeater is called and abnormality determination is performed based on the detection of the pipe pressure in the same way.

In this way, when the inspection processing by calling the repeaters up to No. and +1 is completed, the inspection end time is printed in block J3, and the process returns to the standby state for starting inspection based on the normal time signal.

As is clear from the earthquake detection flowchart shown in Figure 4, when an earthquake that could cause damage to the fire extinguishing equipment is detected, the pump status and piping pressure on each floor are automatically monitored by the VJ. It is necessary to measure and determine whether there is an abnormality in the measured value, and when an earthquake occurs, by checking the output data of the control processing device, it is possible to determine whether or not the fire extinguishing equipment has been damaged by the earthquake, or to what extent. You can easily and easily see if there is one.

Meanwhile, an earthquake occurs during inspection by the control processing device 40.
,: In the flowchart shown in Fig. 4, it is determined that the inspection is in progress at the determination block B, and the block L performs pump inspection cancellation control to emergency stop the fire pump, and the subsequent block M stops the pump. for a certain period of time, e.g. 30
The pressure switch 30 is in the pressure tank 14 within seconds.
The pressure horn switch 30 was switched on within 30 seconds, and it was detected that the pressure horn switch 30 was switched on due to a drop in the pressure inside the pipe.1 (In 4, the earthquake caused damage to the piping of the fire extinguishing equipment and the pressure inside the pipe decreased. On the other hand, if the pressure switch 30 is not turned on within 30 seconds in the judgment block M, it will be determined that there is no major damage to the equipment due to an earthquake. However, if the pressure inside the pipe is gradually decreasing, it may be difficult to detect it within the above fixed time, for example, 30 seconds, so block C is set as shown in the figure. Proceed to measure the pressure gauge values and pump status on each floor, make judgments using judgment blocks D and H, and if it is determined in this way that there is no abnormality in the equipment, for example, the third Pump operation test 1~ as shown in the figure is started from the beginning.

In the above embodiment, only the pump operation test according to flowchart 1r-1 in FIG. 3 is shown as inspection control by the automatic inspection device, but as other inspection control,
In the fire extinguishing equipment shown in the figure, a pump performance test is conducted by opening the electric valve 20 installed in the flow rate test piping 18 at A5, and also checking the sprinkler head 9 by listening to the pipe bed test valve 10 installed in the pipe bed of the branch pipe 8 on each floor. A test control program such as an actual load operation test in which the fire extinguishing pump 1 is operated by creating the same state as the operating state is prepared in advance.

Next, to explain the present invention in detail, a seismic sensor installed at a predetermined position of fire equipment is connected to a control processing device that performs periodic automatic inspection control and data processing that indicates the equipment status of inspection values. When an earthquake is detected by a seismic sensor, the condition of the fire pump and the pipe pressure are measured by the detector, and the measured data is sent to the control unit 1! I! ``By inputting data into the J location and processing it, it is possible to determine whether there is an abnormality in the equipment or not, so in the event of an earthquake, it is possible to quickly and easily determine the damage caused by the earthquake to the fire extinguishing equipment from the output data and alarm from the control processing device. If there is any damage, you can immediately identify the failure location from the output data, so you can take prompt repair measures.Furthermore, if an earthquake occurs during inspection, the seismic sensor will detect the earthquake. The pump operation is stopped urgently based on the detection signal, and inspection control is started again after confirming that the pressure inside the pipe does not drop.
If an earthquake occurs during an inspection, we can respond quickly, and we can continue inspections even when earthquake damage has occurred to prevent water damage caused by damaged pipes and damage to equipment from further expanding. You can also prevent this from happening.

[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. 2
Flowcharts 1 to 4 show an example of inspection control according to the embodiment shown in the figure, and FIG. . 1: Fire pump 2: Motor 3: Pump control panel 4: Water source tank 5: Suction pipe 6: Main pipe 7: W class valve 8: Branch pipe 10: Pipe bed test valve '12: Drain pipe 14: Pressure tank 16 : Priming tank 18: Flow rate test piping 20: Electric valve 22 Dual flow meter 24: Pressure gauge (suction pressure P1) 26: Pressure gauge (discharge pressure P2) 28: Pressure gauge (tank pressure PT) 30: Pressure switch 32: Alarm Valve pressure gauge 34: Alarm valve pressure switch 36: Pipe bed pressure gauge 38: riI vibrator 40: Control processing device 42a, 42b: = + connector 44: Input/output interface 46: CPU (central processing unit) 48: Relay transmission Control section 50: Pulse input section, 52: Control output section 54: Analog input section 56: Clock unit 58: Message display section 60 System status display section 62: Operation section 64 Nibrintaro 6: Alarm buzzer 68: Start device 70: Stop device 74: Ammeter 76: Trouble detector 78: Operation detector 80: Tachometer 82, 84. ．． 86: Liquid level alarm 882 Fire alarm 90: Repeater Patent applicant Hochiki Co., Ltd. Agent Patent attorney Susumu Takeuchi

Claims (1)

[Scope of Claims] A fire extinguishing pump that supplies extinguishing water under pressure, a drive device that drives the extinguishing pump, a extinguishing head that sprays extinguishing water from the extinguishing pump, and the extinguishing head. It has an equipment configuration including piping that connects the fire extinguishing pump, and periodically drives the drive device to operate the fire extinguishing pump based on the time information from the clock unit, and detects the fire extinguishing pump with a detector. In an automatic inspection device for fire extinguishing equipment, which is equipped with a control processing device that inputs and processes the measured values of pump operation status or pressure inside piping, the control processing device is connected to a seismic sensor installed at a predetermined position of the fire extinguishing equipment. and an earthquake processing means for detecting the state of the fire extinguishing pump and the pressure inside the piping by the operation of the detector and processing the data to determine whether there is an equipment abnormality when the seismic sensor detects an earthquake. An automatic inspection device for fire extinguishing equipment characterized by being provided in the control processing device.