JPH035179B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic inspection system used in fire extinguishing equipment that sprays fire extinguishing water from a fire extinguishing head using pressurized water supply from a fire extinguishing pump.

Traditionally, sprinkler fire extinguishing equipment, etc.
Based on the time signal from the clock unit, the fire extinguishing pump is automatically operated, for example, every month, and the pressure of the piping of the extinguishing equipment, the pressure of the pressure tank, or the current, voltage, and discharge pressure of the pump is controlled while the pump is in operation. By measuring suction pressure, etc., and outputting an alarm if there is an abnormality in the fire extinguishing equipment during pump operation, repairs and inspections are performed based on this alarm, ensuring that the fire extinguishing equipment is in operation in the event of a fire.

However, with such conventional automatic inspection systems for fire extinguishing equipment, the condition of the fire extinguishing equipment was measured only during periodic pump operation to determine whether there was an abnormality, so It was not possible to determine equipment abnormalities that occurred during the period based on inspection data, and it was also difficult to determine the overall equipment status by capturing changes in the equipment status over a long period of time, such as one year.

The present invention has been made in view of these conventional problems, and provides an automatic inspection system for fire extinguishing equipment that ensures high reliability by making it possible to inspect the status of fire extinguishing equipment in more detail, including the operational status of pumps. The purpose is to provide

In order to achieve this object, the present invention first measures the state of the fire extinguishing equipment with a detector installed in the fire extinguishing equipment before starting the pump every time an inspection command is issued periodically based on the time signal of the clock unit. The measured value is stored as the initial value, then the pump is started and the operating value of the detector in the pump operating state is stored, and the detector's operating value in the stopped state after the pump is stopped is stored. By performing memory processing and collecting each of the initial value, operating value, and stop value of this detector as inspection data at each inspection, it is possible to check not only the status of the fire extinguishing equipment during pump operation but also during the inspection cycle. This makes it possible to check the status of the fire extinguishing equipment in more detail by making it possible to see the status of the fire extinguishing equipment and changes in the fire extinguishing equipment.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an explanatory diagram showing an example of fire extinguishing equipment in which the automatic inspection system of the present invention is used. first,
To explain the configuration, fire pump equipment is installed on the basement floor B1F of the building where fire extinguishing equipment is installed. That is, 1 is a fire pump driven by a motor 2, a suction pipe 4 is connected to the fire pump 1 from a water source tank 3, and a main pipe 5 is launched from the discharge side of the fire pump 1. A branch pipe 6 is connected to each floor from the pipe 5, and the branch pipe 6 installed in the ceiling of a room on each floor is connected to a sprinkler head 7 installed on the ceiling surface.

Further, piping from a priming water tank 8 is connected to the discharge side of the fire pump 1, so that the fire pump 1 is constantly supplied with priming water. Further, a pump control panel 9 for controlling the operation of the motor 2 is installed near the fire pump 1.

On the other hand, on the right side of the fire pump 1 is a pressure tank 10.
is installed, and the pressure tank 10 is connected to the main pipe 5, and the pressure inside the main pipe 5 obtained by the operation of the fire pump 1 is introduced into the pressure tank 9, and the pressure inside the tank is This compressed air is used to pump the main pipe 5 when the fire pump 1 is stopped.
The internal pressure is kept above the specified pressure.
Furthermore, an alarm valve 11 is installed on the inflow side of the branch pipe 6 provided for each floor, and the alarm valve 11 has a transmitting function to detect the running water obtained by the operation of the sprinkler head 7 and notify the operation of the sprinkler head 7. A pressure switch is provided.

Next, to explain the equipment configuration for automatic inspection in the fire extinguishing equipment shown in FIG. A flow meter 14 is installed through an electric valve 13, and when the electric valve 13 is opened when the fire pump 1 is operated by automatic inspection, pressurized water from the fire pump 1 flows into the flow rate test pipe 12, and the flow meter 14 allows the pump to flow under pressure. The flow rate can be measured. In addition, in order to detect the state of the fire pump 1 during automatic inspection, the suction pipe 4
A pressure gauge 15 is provided on the side to measure the suction pressure P1, and a pressure gauge 15 is provided on the discharge side of the fire pump 1 to measure the discharge pressure P2.
A pressure gauge 16 is provided to measure the pump control panel 9, and the pump control panel 9 is further provided with means for detecting the voltage and current to the motor 2, and the switching time from star connection to delta connection (startup time) when starting the pump. .

Next, regarding the pressure tank 10, a pressure gauge 1 is used to detect the pressure inside the main pipe 5 as the tank pressure PT.
7 and a pressure switch 18 are provided, and this pressure switch 18 is activated when the pressure in the main pipe 5 drops below a specified value due to the operation of the sprinkler head 7 or a water leak during steady monitoring, and controls the pump control panel 9. It has a function of commanding the activation of the fire pump 1.

Furthermore, the end of the branch pipe 6 installed on each floor is
It is connected to the drain pipe 20 via a test valve 19 at the end of the pipe using a solenoid valve or the like, and during automatic inspection, opening the test valve 19 at the end of the pipe creates the same condition as if the sprinkler head 7 were activated, and the fire pump 1 It is designed to be able to perform actual load conditions. Further, the alarm valve 11 provided in the branch pipe 6 is equipped with an alarm valve pressure switch 40 that detects a pressure drop in the alarm valve and sends a pump start signal to the pump control panel 9, and a alarm valve pressure switch 40 that detects the pressure drop in the alarm valve and sends a pump start signal to the pump control panel 9. An alarm valve pressure gauge 41 for detection is provided. Further, an end pressure gauge 42 is provided at the end of the branch pipe 6.

FIG. 2 is a block diagram showing an embodiment of the automatic inspection system of the present invention used in the fire extinguishing equipment shown in FIG.

First, to explain the configuration, reference numeral 21 is a processing device using a microcomputer operated by program control, and signal line connection from various detectors installed in the fire extinguishing equipment to the processing device 21 and pump control necessary for automatic inspection. Signal lines such as signals and valve operation signals are connected by connectors 22a and 22b.

That is, on the connector 22a side, there is a basement as shown in FIG.
Equipment such as the detector, pump control panel 9, and electric valve 13 installed in the fire pump equipment on B1F is connected to the connector. The devices connected to the connector 22a will be explained in order. 23 is a starting device for the pump control panel 9, which is activated by a starting signal from the processing device 21 to start the motor 2 of the fire pump 1. 2
Reference numeral 4 denotes a stop device provided on the pump control panel 9, which stops the motor 2 of the fire pump 1 in response to a stop signal from the processing device 21. 26 is a voltmeter, 27
is an ammeter that detects the power supply voltage and motor current of the motor 2 in the pump control panel 9, converts them into current signals of 4 to 20 milliamperes, and outputs them to the processing device 21. 28 is a trouble detection unit that detects and outputs a failure in the pump control panel 9;
29 is a power outage switch that detects a power outage and switches to a standby power source; 30 is a star operation detector that detects and outputs a star operation of the fire pump;
Reference numeral 31 denotes a tachometer that detects the rotational speed of the fire pump 1, and the detection output of this tachometer 31 is also converted into a current signal of 4 to 20 milliamperes and output to the processing device 21. 32 is a liquid level alarm that detects an abnormality in the liquid level of an elevated water tank installed on the roof of a building; 33 is a liquid level alarm that detects an abnormality in the liquid level in the priming water tank 8; and 34 is a liquid level alarm that detects an abnormality in the liquid level in the water tank 3. This is a liquid level alarm. Further, 35 is a fire alarm, and this fire alarm 3
The detection output No. 5 serves as a signal for stopping the automatic inspection and immediately switching to pump operation based on the fire detection when a fire is detected during the automatic inspection. Reference numeral 36 is an engine trouble detector that detects trouble in the engine that is driven during a power outage. Pressure gauges 15 and 1 shown below this engine trouble detector 36
6 and 17 are pressure gauges that detect the suction pressure P1, discharge pressure P2, and tank pressure PT of the fire pump 1 shown in FIG. Further, the pressure switch 18 is provided in the pressure tank 10 and serves as a switch for detecting a decrease in pressure in the main pipe 5. Furthermore, the flow rate test pipe 12
A power supply and open/close control signals are supplied from a processing device 21 to the electric valve 13 provided in the valve 13 .

Next, to explain the equipment connected to the signal line on the connector 22b side, as shown in the fire extinguishing equipment in FIG. 1, the alarm valve 11 on each floor is equipped with an alarm valve pressure switch 40,
Since an alarm valve pressure gauge 41 is provided, a pipe end pressure gauge 42 is installed at the end of the branch pipe 6, and a pipe end test valve 19 is further provided, an alarm valve pressure switch 40, an alarm valve pressure gauge 41, pipe end test valve 1
9 and the pipe end pressure gauge 42 are connected by a repeater 45 installed on each floor, and the output of the repeater 45 is connected to the connector 22b.

Next, to explain the configuration of the processing device 21, the connectors 22a and 22b are connected to the input/output interface 50, and the input/output interface 50 is followed by an analog input section 52, a control output section 53, a pulse input section 56, and a repeater. A transmission control section 58 is provided, and these circuit sections are connected to a central processing unit (hereinafter referred to as "CPU") 60 of a microcomputer. A clock unit 62 outputs a time signal for periodic automatic inspection to the CPU 60.
, and for automatic inspection operation by the processing device 21, the message display section 64,
A system status display section 66, an operation section 68, a printer 70, and an alarm buzzer 72 are provided.

The processing device 21 is made into a portable display unit, and the signal lines to the connectors 22a and 22b are connected to the central monitoring room where the fire receiving board etc. are installed, and the wiring terminals and the connectors are By connecting the processing device 21, automatic inspection of fire extinguishing equipment can be carried out.By fixedly connecting the processing device 21 with a connector, it may be used as a dedicated automatic inspection system, or the processing device 21 can be used for multiple facilities.
1 may be used in common, and automatic inspection may be performed by connecting the terminal equipment with a connector only during an inspection test.

Next, automatic inspection of the fire extinguishing equipment according to the embodiment shown in FIG. 2 will be explained with reference to the flowchart shown in FIG.
The flowchart in FIG. 3 shows a pump operation test conducted with the discharge side of the pump closed.

First, with the connector connected to the processing device 21 as shown in Fig. 2, the test mode shown in block a of Fig. 3, that is, the test I switch corresponding to the pump operation test, is manually turned on. Alternatively, an automatic start is performed based on the time signal shown in block b.

When manual or automatic start of inspection control is performed in this way, first, as shown in block c, the test mode, year, month, date, hour and minute are printed by the printer 70, and then in block d, the initial values when the pump is stopped are printed. A voltmeter 26 measures the voltage of the pump control panel 9, a pressure gauge 15 measures the suction pressure P1 of the fire pump 1, a pressure gauge 16 measures the discharge pressure P2 of the fire pump 1, and a pressure tank. The pressure gauge 17 measuring the tank pressure PT of 10 is activated by power supply, and its detection output is inputted via the input/output interface 50 and the analog input section 52, and these voltages and pressures P1, P2, PT are input. is stored in the memory of the CPUC 60 and outputted to the printer 70 at the same time.

In this way, when data processing of the initial value indicating the initial state of the fire pump 1 is performed in block d, the process proceeds to block e, where the pump is transferred to the starting device 23 via the output control section 54, input/output interface 50, and connector 22a. Next, in block f, the item indicating the start of the pump and the pump start time are printed on the printer 70. In the determination block g, confirmation of the start is determined, and then in the block h, the fire pump is activated. The switching time from star connection to delta connection when starting pump 1 is measured and printed, and judgment block i determines that the switching time is within the predetermined time, and the block determines that the pump has started normally. Go to j. Of course, the startup confirmation is not performed in discrimination blocks g and i, and on the other hand,
When the startup time exceeds the predetermined time, the block
Then, the alarm buzzer 72 is activated to notify that the fire pump has not started normally, and the inspection is stopped.

After the pump is started normally, block
, the voltage of block d changes 1 minute after startup,
The pressures P1, P2, PT, the motor current measured by the ammeter 27, and the pump rotational speed measured by the tachometer 31 are input as operating values and stored in the memory of the CPU 60, and at the same time, the measured data is output to the printer 70.

When block j finishes processing data during pump operation, block k outputs a stop signal to the stop device 24 30 seconds after data collection during operation ends, stopping fire pump 1, and at the same time block e starts pump operation. The printer 70 is caused to print the item indicating the stop and the stop time.

When the operation of the fire pump is stopped in this way, in block n, each of the voltage, pressure P1, P2, and PT of the stopper is written as a stop value in the memory of the CPU 60, and simultaneously output to the printer 70, as in block d. Finally, in block n, the pump operation test items and test end time are printed on the printer 70 to complete the series of automatic inspections.

As is clear from the flowchart shown in FIG. 3, in the automatic inspection device of the present invention, when automatic inspection is started based on the time signal from the clock unit 62, it is stopped as shown in block d. The measured values of a certain pump, i.e. voltage,
Suction pressure P1, discharge pressure P2 and tank pressure PT
After processing the data to become the initial values, the pump is operated, and as shown in block j, the measured values of the pump status during operation are input and stored as operating values, and used for launching, etc. Even immediately after data processing is performed and the pump is stopped, as shown in block n, the voltage, pressure P1, P2, and PT are stored as stop values.
We perform data processing such as launch, and collect data showing three operating states in one automatic inspection: the initial value before the pump is started, the operating state during pump operation, and the stop value after the pump is stopped. It is then stored and printed out using a printer.

FIG. 4 is an explanatory diagram showing an example of recorded data from the printing of the printer obtained by the automatic inspection shown in the flowchart of FIG. , and tank pressure PT are displayed, and during operation, operating data including current ACI and pump rotation speed RPM are displayed.

The inspection data shown in Figure 4 is obtained, for example, at every monthly inspection cycle.
One month later, May 1958, shown together with the inspection data of
As is clear from the comparison with the data on the 20th, the tank pressure PT as the stop value shown in the first data
was 6.7, whereas the initial value of tank pressure PT at the second inspection one month later was 5.9.
This tank pressure has changed to a lower value by 0.8
From changes in PT over a period of one month, it is possible to know, for example, the decline in main pipe pressure over a period of one month, and if an extreme drop in tank pressure is observed, it is possible to determine a water leak in the piping system.
Further, when there is almost no difference between the previous stop value and the current initial value, it can be confirmed that there is no particular abnormality in the fire extinguishing equipment itself even after a period of one month has passed.

FIG. 5 is a flowchart showing a pump performance test, which is another inspection item, according to the embodiment shown in FIG. This is an operation test in which pressurized water from fire pump 1 is flowed. In the pump performance test shown in Fig. 4, similarly to the flowchart shown in Fig. 3, the voltage, pressure P1, P2, and PT in the initial state before pump operation are entered in block a, and data such as memorization and launch etc. After starting the pump, in block b, the operating value is stored and set by inputting the measured value including the current and the pump rotation speed, and further, in block c, the operation including the flow rate with the electric valve 13 open is performed. After the values are stored and output, and the data processing of the operating values is completed, the pump is stopped, and as shown in block d, the voltage, pressure P1, P2, and PT after the stop are stored and output as stop values. I am trying to process it.

The data processing performed three times in the automatic inspection process is exactly the same for the actual load test in which the pipe end test valve 19 in Figure 1 is opened to create the same situation as when the sprinkler head is activated. In the case, voltage, pressure P1, P
2. In addition to PT, the measured values of the pipe end pressure gauge 42 and alarm valve pressure gauge 41 on each floor are also added.

Next, to explain the effects of the present invention, the detected value of the initial state before pump operation, measured by a detector installed in the fire extinguishing equipment during periodic inspection based on the time signal of the clock unit, is input and data processed. After processing the initial values, command the pump to start and operate it.
The operating value of the detector in this operating state is input and data processed, and after the operating value is processed, the pump is commanded to stop, and the detector stop value in the pump stopped state is input and data processed. Therefore, during each periodic inspection, the initial value before starting the pump, the operating value during operation, and the stop value after stopping the pump can be obtained as inspection data, and the equipment can be operated normally from the operating value indicating data during pump operation. In addition to being able to determine whether or not the pump is operating properly, it is also possible to know the status of the equipment during the inspection period before pump operation by comparing the initial value or stop value in past inspection data with the initial value in the current inspection data. Therefore, abnormalities can be detected without putting a burden on fire extinguishing equipment such as pumps. Furthermore, by comparing inspection data over a long period such as one year, it is possible to determine the overall maintenance status of equipment, and by taking measures such as inspection and repair based on this inspection data, extremely reliable Able to maintain and manage high-quality fire extinguishing equipment.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an example of fire extinguishing equipment in which the automatic inspection system of the present invention is used, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is a pump operation test according to the present invention. FIG. 4 is an explanatory diagram of data obtained by the automatic inspection shown in FIG. 3, and FIG. 5 is a flowchart of a pump performance test according to the present invention. 1: Fire pump, 2: Motor, 3: Water source tank,
4: Suction pipe, 5: Main pipe, 6: Branch pipe, 7: Sprinkler head, 8: Priming water tank, 9: Pump control panel, 10: Flow rate test piping, 13: Electric valve, 14:
Flow meter, 15: Pressure gauge (suction pressure P1), 16:
Pressure gauge (discharge pressure P2), 17: Pressure gauge (tank pressure PT), 18: Pressure switch, 19: Pipe end test valve, 20: Drain pipe, 21: Processing device, 22a,
22b: Connector, 23: Starting device, 24: Stopping device, 26: Voltmeter, 27: Ammeter, 28: Trouble detector, 29: Power outage switch, 30: Star operation detector, 31: Tachometer, 32, 33, 34: Liquid level alarm, 35: Fire alarm, 36: Engine trouble detector, 40: Alarm valve pressure switch, 4
1: Alarm valve pressure gauge, 42: Pipe end pressure gauge, 45: Repeater, 50: Input/output interface, 50: Analog input section, 54: Control output section, 56: Pulse input section, 58: Repeater transmission control Part, 60: CPU (Central Processing Unit), 62: Clock Unit, 64:
Message display section, 66: System status display section,
68: Operation unit, 70: Printer, 72: Alarm buzzer.

Claims (1)

[Scope of Claims] 1. In a fire extinguishing equipment that pumps fire extinguishing water under pressure and sprays it from a fire extinguishing head, the system comprises: a drive device that operates the pump; and a drive device that is installed in the fire extinguishing equipment and measures the state of the fire extinguishing equipment. A detector and a processing device that periodically inspects the fire extinguishing equipment based on a time signal from the clock unit are provided, and the processing device operates the pump during periodic inspection based on the time signal from the clock unit. an initial value processing unit that inputs and stores the detection value of the initial state of the detector before the initial state is stored; and an initial value processing unit that outputs an operation command signal that instructs the drive device to start the pump after storing the initial value; an operating value processing unit that inputs and stores an operating value of the detector during operation;
and a stop value processing unit that outputs a stop signal for stopping operation of the pump to the drive device after storing the operating value, and inputs and stores the stop value of the detector when the pump is stopped. An automatic inspection system for fire extinguishing equipment featuring: