JPH0374114B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention performs a pump test run by driving open a test on-off valve provided at the end of a branch pipe to simulate the operating state of a sprinkler head. This invention relates to a comprehensive testing device for fire extinguishing equipment.

(Prior art) Conventionally, in the case of sprinkler fire extinguishing equipment, a water supply pipe connected to the discharge side of a fire pump installed in the basement etc. is vertically oriented in the building, and an alarm is set on each floor of this main water supply pipe. Branch pipes are connected through valves, and each branch pipe is equipped with a plurality of sprinkler heads.

The internal pressure of the main water supply pipe and branch pipes is maintained at a specified pressure under steady monitoring conditions, and if any sprinkler head is activated due to heat from a fire in this state, fire extinguishing water will be sprayed from the sprinkler head. When the water flow flows to the alarm valve, the alarm valve is activated and a fire detection output is generated, and this fire detection output is given to the pump control panel to start the fire extinguishing pump.

By the way, in the case of such fire extinguishing equipment, in order to check whether the pump starting movement is performed reliably by the operation of the sprinkler head, the end of the branch pipe is drained through a test opening/closing valve such as an electric valve. By connecting it to the pipe and opening the test on-off valve at the end of the pipe, the same water flow as when the sprinkler head is activated flows into the branch pipe to simulate the operating state of the sprinkler head, and the alarm valve fire detection at this time. A comprehensive test is conducted in which the fire pump is started and operated based on the output.

(Problem to be Solved by the Invention) However, in the case of comprehensive testing of such conventional fire extinguishing equipment, the test on-off valve at the end of the branch pipe is driven open, the pump is started, and the pump is confirmed to have started. Once the specified inspection data had been collected, the test on-off valve was closed and the pump operation was then stopped. Therefore, in the unlikely event that a fire broke out during the test on the test floor and the actual situation occurred. Even if the sprinkler head was operating, the pump operation would have to be stopped at the end of the test, and the pump would have to be restarted after the test was stopped, and as the sprinkler head was being inspected, it would have been difficult to confirm that a fire had occurred. There was a risk that there would be a significant time delay in starting the fire pump.

(Means for Solving the Problems) The present invention has been made in view of such conventional problems. The purpose of the present invention is to provide a comprehensive test device for fire extinguishing equipment that connects pump operation even after completion of the test to prevent time delays due to pump restart.

In order to achieve this purpose, in the present invention, a branch pipe is connected to the main water supply pipe from the fire pump via an alarm valve, a sprinkler head is attached to this branch pipe, and the end of the branch pipe is opened and closed for testing. It has a fire extinguishing system connected to the drain pipe through a valve, and when the test on-off valve is opened and a specified amount of water flows through the branch pipe, the fire detection output generated by the activation of the alarm valve activates the fire extinguishing pump. In a comprehensive test device for fire extinguishing equipment that closes the test on-off valve and stops the fire pump after a test run for a predetermined period of time, the detection output of the alarm valve is detected after a certain period of time after the test on-off valve is closed and the fire pump is stopped. When this is achieved, stop control of the fire pump is prohibited.

(Function) According to the configuration of the present invention, when the sprinkler head actually operates due to a fire occurring during a test, even if the test on-off valve is driven to close,
Since the detection output of the alarm valve will continue to be obtained when the sprinkler head is activated, if the detection output of the alarm valve is obtained after a certain period of time required for the alarm valve to recover from the closing drive of the test on-off valve. The system determines that the sprinkler head is operating due to an actual fire, prohibits pump stop control at the end of the comprehensive test, and allows pump operation to continue, eliminating the time delay caused by restarting the pump after the test ends. be.

(Example) FIG. 2 is an explanatory diagram showing a fire extinguishing equipment to which the comprehensive testing device of the present invention is applied.

In FIG. 2, 1 is a fire pump and 2 is a motor, which are installed, for example, in the basement of a building. The fire pump 1 pumps up and pressurizes fire extinguishing water from an underground water tank 3 through a suction pipe 4, and supplies the pressurized fire extinguishing water to a main water supply pipe 5 connected to the discharge side. Note that a gate valve 6 is provided at the rising portion of the water supply main pipe 5.

The main water supply pipe 5 is installed in the vertical direction of the building, and a branch pipe 8 is connected via an alarm valve 7 to each floor where the main water supply pipe 5 is installed. A sprinkler head 9 is installed. Note that FIG. 2 representatively shows only the connection state of the branch pipes 8 on a specific floor.

Furthermore, a pump control panel 1 is installed near the fire pump 1.
0 is installed, and a detection signal from the alarm valve 7 provided in the branch pipe 8 is given to the pump control panel 10 for pump activation control.

Here, the alarm valve 7 is connected to the sprinkler head 9.
In the steady monitoring state where the alarm valve 7 is inactive, there is no water flow through the alarm valve 7, so the valve mechanism is inactive and the detection output is off, and at least one sprinkler head 9 is activated. When a water flow corresponding to the actuation amount flows, the valve mechanism is operated by the water flow and a detection output is generated.

In such fire extinguishing equipment, in order to perform a comprehensive inspection of the fire extinguishing equipment, the pipe end of the branch pipe 8 is connected to the drain pipe 13 via an orifice 11 and an electric valve 12 as a test opening/closing valve.
The operating water volume of one sprinkler head attached to the branch pipe 8 is set, and during the comprehensive test, by opening the electric valve 12, the water volume equivalent to that of one sprinkler head operating as determined by the orifice 11 is produced. The water is drained into the drain pipe 13.

FIG. 1 is a block diagram showing an embodiment of the present invention intended for the fire extinguishing equipment shown in FIG.

First, the configuration will be described. Reference numeral 15 denotes an inspection control device, which is placed in, for example, a monitoring room, and executes inspection control processing including the functions of the comprehensive testing device of the present invention under program control by a CPU. In addition, the inspection control device 15 has an automatic inspection mode and a manual inspection mode, and in the automatic inspection mode, a series of inspection controls are automatically performed every time a predetermined inspection cycle is reached, while in the manual inspection mode In this case, a series of inspection controls are performed by the operator's switch operations.

As shown in FIG. 2, an electric valve 12 provided at the end of the branch pipe 8 is connected to the inspection control device 15 by a signal line, and a detection output of an alarm valve 7 provided at the branch portion of the branch pipe 8 is connected to the inspection control device 15. is given.

Furthermore, the inspection control device 15 is connected to the pump control panel 10 by a signal line, and can perform pump start control and pump stop control from the inspection control device 15 side, and can also perform test operation via the pump control panel 10. It is possible to collect static data before and after, operational data during test operation, specifically voltage and current of the motor 2, suction pressure and discharge pressure of the fire pump 1, etc. as measured data.

Next, the inspection control device 15 has the following processing functions in order to realize the function as a comprehensive testing device of the present invention.

(A) For the comprehensive test, the electric valve 12 is driven open to create a simulated operational state of the sprinkler head 9, thereby obtaining the detection output of the alarm valve 7 and causing the pump control panel 10 to start the pump. function.

(B) A function that performs test recovery by closing the electric valve 12 after collecting operation data in the operating state by starting the pump.

(C) Check the detection output of the alarm valve 7 after a predetermined period of time has elapsed since recovery by closing the electric valve 12, and if the detection output of the alarm valve 7 is not obtained, perform pump stop control,
A function that prohibits pump stop control and outputs a fire alarm when the detection output of the alarm valve 7 is obtained.

It has three control functions.

Next, processing operations performed by the comprehensive testing apparatus of the present invention will be explained with reference to the flowchart shown in FIG.

Assuming that the inspection control device 15 is set to automatic inspection mode, for example, when a predetermined inspection cycle is reached, the comprehensive test processing operation shown in FIG. 3 is started.

In this processing operation, first, in block 30, a test floor n on which a comprehensive test is to be conducted is initialized, and then, in block 32, the electric valve 12 provided at the end of the branch pipe 8 of the set test floor n is driven to open. This electric valve 1
An orifice 11 is opened in the branch pipe 8 by the opening drive of 2.
A water flow corresponding to the operation of one sprinkler head, which is determined by , flows, and after a predetermined operation delay time, the alarm valve 7 is activated and a detection output is generated. The detection output of the alarm valve 7 is determined in a determination block 34, and the process proceeds to a block 36, where the activation control of the fire pump 1 is performed. That is, the pump control panel 10 first connects the motor 2 to the Y connection to start the pump, and after a certain period of time switches to the Δ connection to enter the pump operating state.

When the pump start control is performed in block 30, the start is confirmed in determination block 38. If the pump fails to start, the process proceeds to block 40 to issue an abnormality alarm, and in the next block 42, the electric valve 12 is closed and initialized. After the condition is restored, the inspection process ends.

When startup is confirmed in the determination block 38, predetermined operating data is measured in the operating state of the fire pump 1, that is, the voltage and current of the motor 2, and the discharge pressure and suction pressure of the fire pump 1. When measurement and collection of operating data is completed, the motor-operated valve 12 is driven to close in block 44.

When the electric valve 12 is driven to close, the water flow through the branch pipe 8 is stopped, and after a predetermined time delay from the closing of the electric valve 12, the alarm valve 7 is also restored and its detection output is cut off. Therefore, the determination block 46 checks whether there is a detection output from the alarm valve 7 after a certain period of time necessary for the alarm valve 7 to recover has elapsed.

Here, if there is no fire on the nth floor where the test was conducted, the alarm valve 7 will be restored after a certain period of time and the detection output will have been cut off, so the process will proceed to block 50, where the pump stop control will be performed, and then the determination will be made. In block 52, it is checked whether the comprehensive test of the final floor has been completed. If the final floor has not been reached, the test floor n is incremented in block 54, and then the process returns to block 32.
Return to

On the other hand, during the test, a fire broke out on the test floor, and one of the sprinkler heads 9 installed in the branch pipe 8 through which the test flow rate was flowing by opening the electric valve 12 was activated due to heat from the fire. In this case, even if the electric valve 12 is driven to close in the block 44, the actuation water flow is flowing to the alarm valve 7 due to the operation of the sprinkler head 9, so the detection output of the alarm valve 7 is checked in the judgment block 46 after a certain period of time has elapsed. Then, the detection output is obtained,
Without carrying out the pump stop control in block 50, the process proceeds to block 56 to issue a fire alarm, stop the test process, and continue operating the fire pump 1 to extinguish the fire.

As is clear from the processing operation of the comprehensive test shown in FIG. After closing the electric valve 12, the detection output of the alarm valve is checked after a certain period of time necessary for the alarm valve 7 to recover.If the detection output of the alarm valve is obtained, it is determined that there is a fire and the pump is stopped. As a result, there is no need to restart the pump based on the alarm valve detection output due to a fire after the pump has stopped, and if a fire occurs during inspection, the pump can be tested without delay in starting the pump. Test operation for fire extinguishing can be continued without stopping operation.

The comprehensive test of the present invention shown in FIG. 3 is carried out as one of the inspection items in the automatic inspection process shown in the flowchart of FIG. 4, for example.

That is, in the automatic inspection process shown in FIG. 4, first, in block 60, inspection items such as the comprehensive test of the present invention, date, and hour and minute are printed, and then in block 62, static data before inspection is printed. The data is collected and the status is determined in a judgment block 64. If abnormal data is found, an abnormality alarm is issued in a block 66 and the inspection process is completed. If the static data is normal in decision block 64, the process advances to block 68 to execute inspection items. The inspection items of this block 68 are, for example, the operational processing of the comprehensive test of the present invention shown in FIG. Then, in block 70, the operating data,
That is, the voltage and current of the motor as well as the discharge output and suction pressure of the fire pump are measured when the pump is started, and a determination block 72 determines whether the operating data is normal or not. If the operating data is normal, the block is activated. At 74, termination processing is performed. This termination process is a check of the detection output of the alarm valve, which is performed after a certain period of time has elapsed since the closing drive of the electric valve at the end of the tube and the closing operation of the electric valve at the end of the tube in the flowchart of FIG. 3, and further control to stop the pump.

When the end processing in block 74 is completed, the next block 76 collects stationary data after the inspection is completed, the state is determined in judgment block 78, and the inspection items and end time are finally printed, and the predetermined next This will allow you to proceed to the processing of the inspection items.

(Effects of the Invention) As described above, according to the present invention, a branch pipe is connected to the main water supply pipe from the fire pump via an alarm valve, a plurality of sprinkler heads are attached to the branch pipe, and the branch pipe is It has a fire extinguishing system in which the end of the pipe is connected to the drain pipe via a test on-off valve (motorized valve), and an alarm valve is activated when the test on-off valve is opened and a specified amount of water flows through the branch pipe. In a comprehensive test equipment for fire extinguishing equipment, the fire pump is started by the fire detection output generated by the operation, and after a test run for a predetermined period of time, the test on-off valve is closed and the fire pump is stopped. After a certain period of time, the detection output of the alarm valve is checked, and when the detection output of the alarm valve is obtained, stop control of the fire pump is prohibited and pump operation is continued. Even if a fire breaks out on the test floor and one of the sprinkler heads is in operation, the detection output of the alarm valve is checked during the inspection completion process, that is, after a certain period of time has elapsed since the test on-off valve was closed. If the detection output of the alarm valve is obtained due to activation of the sprinkler head due to a fire, the fire pump that was started and operated in the comprehensive test will continue to operate without performing pump stop control and pressurized fire extinguishing water will be supplied to the activated sprinkler head. As a result, the fire that occurred during the comprehensive test was able to be extinguished by the activated sprinkler head without the time delay caused by restarting the pump after the test, and the fire was extinguished during the comprehensive test. However, the function of the fire extinguishing equipment is not impaired in any way, and the reliability of the fire extinguishing equipment can be greatly improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is an explanatory diagram showing a fire extinguishing equipment to which the present invention is applied, and Fig. 3 is a flowchart showing the operation processing of a comprehensive test according to the present invention. FIG. 4 is a flowchart showing automatic inspection processing in which the comprehensive test of the present invention is included as one of the inspection items. 1: Fire pump, 2: Motor, 3: Underground water tank,
4: Suction pipe, 5: Main water supply pipe, 6: Gate valve, 7: Alarm valve, 8: Branch pipe, 9: Sprinkler head, 10: Pump control panel, 11: Orifice, 1
2: Electric valve (test opening/closing valve), 13: Drain pipe, 1
5: Inspection control device.

Claims (1)

[Claims] 1. A branch pipe is connected to the main water supply pipe from the fire pump via an alarm valve, a plurality of sprinkler heads are attached to the branch pipe, and the end of the branch pipe is connected via a test opening/closing valve. The fire extinguishing pump is activated by the fire detection output caused by the activation of the alarm valve when the test on-off valve is opened and a specified amount of water flows through the branch pipe. In a comprehensive test device for fire extinguishing equipment, which closes the test on-off valve and stops the fire pump after a test operation for a period of time, the alarm valve is detected after a certain period of time after the test on-off valve is closed. 1. A comprehensive test device for fire extinguishing equipment, characterized in that a prohibition means is provided for inhibiting stop control of the fire extinguishing pump when an output is being obtained.