JP2009000199A - Pre-operation type sprinkler fire-extinguishing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide highly reliable pre-operation type sprinkler fire-extinguishing equipment, wherein a flowing water detection part is not operated even when a fire sensor makes a false report, fire signals are judged almost without errors when flowing water signals are generated in the flowing water detection part conversely, and the flowing water signals are accurately captured. <P>SOLUTION: In the sprinkler fire-extinguishing equipment 100 provided with the flowing water detector 10 for generating the flowing water signals when flowing water is generated between the primary side 1 and the secondary side 2, the flowing water detector 10 includes a flowing water detection part 11 provided in a main conduit 3 connected from the primary side 1 to the secondary side 2 for generating the flowing water signals when the flowing water is generated, a first partitioning valve 12 provided in the main conduit serially with the flowing water detection part 11, and a second partitioning valve 13 provided in a sub conduit 4 in parallel with the main conduit connected from the primary side 1 to the secondary side 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pre-actuated sprinkler fire extinguishing equipment and to accurately catch a running water signal of a running water detection device used in the equipment.

  The pre-actuated sprinkler fire extinguishing equipment discharges fire water from the sprinkler head when both the fire detector and the sprinkler head are activated by a fire.

  The water flow detector used in the pre-actuated sprinkler fire extinguishing equipment is installed in the middle of the pipe connected from the water source to the sprinkler head, its primary side is connected to the water source, and the secondary side is connected to the sprinkler head. Yes.

  A pipe connected to the secondary side filled with air or the like is called dry pre-operation, and a pipe filled with fire-extinguishing water is called wet pre-operation.

In both dry and wet processes, the valve element inside the pre-acting running water detection unit is normally closed. When a fire detector is activated in the event of a fire, the gate valve connected in series with the above water flow detector is opened, thereby opening the valve body and opening the water channel from the water source to the sprinkler head. (Pre-operation). When the sprinkler head is activated by the heat of the fire, the water in the secondary side pipe is discharged from the sprinkler head, and then the pump is activated to pump out the water from the water source and supply it to the sprinkler head to extinguish the fire (full operation) ). (For example, patent document 1).
JP 2002-219188 A

  In the conventional pre-acting sprinkler fire extinguishing equipment, particularly in the dry type, when the fire sensor is activated, the gate valve is opened, the water path from the water source to the sprinkler head is opened, and the water flow detection unit generates a water flow signal. In general, in order to catch this running water signal as a fire signal, a fire alarm or an evacuation alarm is issued on the control device (receiving panel). By the way, even when the fire detector malfunctions, for example, the gate valve is opened and running water is generated, and the running water detection unit generates a running water signal. If there is no water discharge from the sprinkler head and the control device generates a fire alarm or evacuation alarm by a flow signal, the site may cause an unnecessary excessive reaction. Therefore, in the conventional water flow detection device, the water flow signal does not completely reflect water discharge from the sprinkler head, that is, a fire.

  In view of the above circumstances, in the pre-actuated sprinkler fire extinguishing equipment, this invention is almost certainly a fire if the water detector does not operate even if there is a false alarm, and a water flow signal is generated in the water detector. A pre-acting sprinkler fire extinguishing system that can accurately determine the signal and accurately capture the flowing water signal.

  The present invention has been made to solve the above problems, and a water flow detection device is provided that generates a water flow signal when water flows between a primary side connected to a water source and a secondary side connected to a sprinkler head. In the sprinkler fire extinguishing equipment, the water flow detection device is provided in a main pipeline connected from the primary side to the secondary side and generates a flow signal when flowing water is generated, and the main pipeline in series with the water flow detection unit A first gate valve for partitioning the main pipeline, and a second gate valve for partitioning the secondary pipeline provided in a secondary pipeline parallel to the main pipeline connected from the primary side to the secondary side, It is characterized by providing.

  Further, in the sprinkler fire extinguishing equipment provided with a water flow detection device that generates a water flow signal when water flows between the primary side connected to the water source and the secondary side connected to the sprinkler head, the water flow detection device includes the primary water A water flow detection unit that generates a flow signal when water flows from the side to the secondary side, and a valve seat formed in a partition wall between the primary side and the secondary side that generates water flow that operates the water flow detection unit And a second valve body for partitioning different valve seats formed in the partition wall at a position different from the valve seat partitioned by the first valve body.

  In addition, a pressure switch is provided on the secondary side, and when the pressure switch detects that the pressure on the secondary side reaches a predetermined value by opening the second gate valve or the second valve body, The two gate valve or the second valve body is closed, and the first gate valve or the first valve body is opened.

  In addition, a timer for measuring the time from the opening of the second gate valve or the second valve body is provided, and when the timer determines that a predetermined time has elapsed, the second gate valve or the second valve body is In addition to closing, the first gate valve or the first valve body is opened.

  According to the present invention, the first gate valve is provided in the main pipeline and connected in series with the flowing water detection unit, and the second gate valve is provided in the sub pipeline parallel to the main pipeline, so that the second gate valve When only the water is opened, water on the primary side flows to the secondary side, but the flow detection unit does not operate, so no flow signal is generated. Conversely, when the first gate valve is opened and a running water signal is generated by the operation of the running water detection unit, it can be determined that the sprinkler head connected to the secondary side is opened and the water is discharged. Thus, the water flow signal can reliably reflect the water discharge situation of the sprinkler head.

Embodiment 1
FIG. 1 is a configuration diagram of a running water detection device according to Embodiment 1 of the present invention and a pre-actuated sprinkler fire extinguishing equipment including the running water detection device.

  The pre-actuated sprinkler fire extinguishing equipment 100 includes a pre-acting running water detection device 10, a sprinkler head 16, a fire detector 17, and a control device (receiver panel) 19 that controls the entire system of the fire extinguishing equipment. .

  The flowing water detection device 10 branches between the primary side 1 and the secondary side 2, and a main pipe line 3 and a sub pipe line 4 are formed in parallel, and is provided in the main pipe line 3 to detect the flowing water inside. A flowing water detection unit 11 having a sensor, a first partition valve 12 that is provided in the main pipeline 3 so as to be connected in series with the flowing water detection unit 11, and partitions the flowing water of the flowing water detection unit 11, and the flowing water detection unit 11 The second partition valve 13 is provided in the sub-pipe 4 so as to be connected in parallel, and distributes the flowing water on the primary side 1 of the flowing water detection unit 11 to the secondary side 2. The primary side 1 pipe is connected to a water source (not shown), and the secondary side 2 pipe is connected to the sprinkler head 16.

  The flowing water detection mechanism of the flowing water detection unit 11 may be a check type that detects flowing water with a pressure switch or the like, but may be a paddle type that detects movement of the paddle due to flowing water with a limit switch.

  The sprinkler head 16 is a closed head, and when the secondary side 2 pipe is filled with air, or when the secondary side 2 pipe is filled with water, the present invention is compatible with the above two systems. To do.

  The fire sensor 17 is installed in a protection section, and a smoke sensor, a heat sensor, a flame sensor, or the like can be installed depending on the protection object in the section. The control device 19 plays a central role as a control device for the pre-actuated sprinkler fire extinguishing equipment 100 as a whole.

  First, the operation of the flowing water detection device 10 will be described.

  Normally, the first gate valve 12 and the second gate valve 13 are closed, but when the first gate valve 12 is opened and the water on the primary side 1 flows to the secondary side 2 through the water flow detection unit 11, the water flow detection unit 11 detects this flowing water and generates a flowing water signal. On the other hand, when the first gate valve 12 is closed and the second gate valve 13 is opened, the water on the primary side 1 is caused to flow to the secondary side 2 through the sub-pipe 4 where the second gate valve 13 is provided. Since water does not flow through the flowing water detector 11 provided in the main pipeline 3, no flowing water signal is generated. Then, a pressure switch 15 is installed on the secondary side 2, and when the water pressure on the secondary side 2 reaches a predetermined value, the pressure switch 15 is activated, the second gate valve 13 is closed, and the first gate valve 12 is turned on. If the mechanism of opening is used, when a flow signal is generated in the flow detection unit 11 when the first gate valve 12 is opened, the closed sprinkler head 16 on the secondary side 2 is opened and discharged. is there.

  Next, the operation of the pre-actuated sprinkler fire extinguishing equipment 100 will be described.

  In the normal monitoring state, the first gate valve 12 and the second gate valve 13 of the water flow detection device 10 are closed, and the fire extinguishing water on the primary side 1 does not flow to the secondary side 2.

  When there is a fire, the fire detector 17 is activated first. When this operation signal is transmitted to the control device 19, the control device 19 opens the second gate valve 13 and causes the fire extinguishing water on the primary side 1 to flow to the secondary side 2 via the sub-pipe 4. At this time, since there is no running water in the running water detection unit 11 without using the main pipeline 3, the control device 19 issues a preliminary warning of the operation of the fire detector 17, but since there is no running water signal, a full-scale fire alarm is issued. do not do.

  When the water pressure in the pipe on the secondary side 2 gradually reaches a predetermined pressure value, the pressure switch 15 for monitoring the pressure on the secondary side 2 is activated. With this signal, the control device 19 controls the second gate valve 13 to close and the first gate valve 12 to open. At this time, since the water pressure on the primary side 1 is equivalent to the water pressure on the secondary side 2, even if the first gate valve 12 is opened, there is no running water in the running water detection unit 11, and no running water signal is transmitted.

  Next, as the scale of the fire increases, the sprinkler head 16 is activated by the heat of the fire. Since the fire extinguishing water on the secondary side 2 has already reached the specified pressure value, water can be immediately discharged from the sprinkler head 16 and fire extinguishing can be performed. Since the water pressure on the secondary side 2 is reduced, the fire extinguishing water on the primary side 1 supplied from the water source flows to the secondary side 2 through the water flow detection unit 11 and the first gate valve 12. Then, a running water signal is transmitted from the running water detection unit 11, and the control device 19 receives the water discharge signal of the sprinkler head and issues a fire alarm and an evacuation alarm in earnest.

  The second gate valve 13 is closed and the first gate valve 12 is opened by the operation of the pressure switch 15. However, the charging of the secondary side 2 may be determined in terms of time. The second gate valve 13 may be closed and the first gate valve 12 may be opened by a minute timer.

  According to the first embodiment, the pre-acting sprinkler fire extinguishing equipment 100 according to the present invention has the following features.

  (1) The second gate valve 13 is opened by the operation of the fire detector 16, and the fire extinguishing water on the primary side 1 flows to the secondary side 2, but is not discharged from the sprinkler head 16, that is, “pre-operation”. Since it is a stage, the flowing water detection part 11 does not emit a flowing water signal. If it does so, the control apparatus 19 will display the alert signal of the fire detector 17, but will not transmit the alarm of "full-scale operation" by flowing water. It is possible to reliably distinguish between “pre-operation” and “full-scale operation”.

  (2) Since the “pre-operation” has been completed and the water pressure on the secondary side 2 has already reached a predetermined pressure value, when the sprinkler head 16 discharges water, the water discharge delay time is shorter than that of the conventional pre-actuated sprinkler fire extinguishing equipment. I'll do it.

  (3) When the fire detector 17 is activated and then, for example, this is found to be a malfunction, or when the fire detector 17 is activated but the fire source is lost and the sprinkler head 16 is not opened, the water flow detector Therefore, the control device 19 does not need to issue a large-scale fire alarm or evacuation alarm, and does not cause unnecessary excessive reaction at the site. Useless movement of disaster prevention equipment can be prevented.

Embodiment 2
FIG. 2 is a configuration diagram of a flowing water detection device used in a pre-actuated sprinkler fire extinguishing facility according to Embodiment 2 of the present invention.

  The pre-actuated sprinkler fire extinguishing equipment 200 of this embodiment is different from the pre-acting sprinkler fire extinguishing equipment 100 of the first embodiment only in the part of the flowing water detection device 10, and other configurations are the same as those of the first embodiment.

  As a configuration of the flowing water detection device 20, a flowing water detection unit 21, a first valve body 22 connected in series with the flowing water detection unit 21 and corresponding to the first partition valve 12 that partitions the flowing water of the flowing water detection unit 21, A different valve seat is formed in the opposite direction of the valve seat of the one valve body 22, and the second gate valve 13 that circulates the flowing water on the primary side 1 of the flowing water detector 21 to the secondary side 2 through the different valve seats. And a corresponding second valve body 23. As peripheral devices, there are a pressure switch 25 for detecting the water pressure on the secondary side 2, a pressure regulating pilot valve 26 for adjusting the pressure on the secondary side 2, a drain valve 27, and a strainer 28.

  Moreover, the internal structure of the flowing water detection unit 21 includes a shaft 21 a and a limit switch 21 b that are linked to the first valve body 22. The first valve body 22 includes an electrically operated valve 22a, a manual valve 22b, and a piston 22c that is a valve body that can be connected to and separated from the partition wall K between the primary side 1 and the secondary side 2, and includes a second The valve body 23 includes an electric valve 23 a and a piston 23 b that can be separated from and connected to the partition wall K between the primary side 1 and the secondary side 2.

  Next, the operation of the pre-actuated sprinkler fire extinguishing equipment 200 in Embodiment 2 will be described.

  Usually, the 1st valve body 22 and the 2nd valve body 23 of the flowing water detection apparatus 20 are closed, the partition K is sealed by the piston 22c and the piston 23b, and the fire extinguishing water of the primary side 1 does not flow into the secondary side 2. .

  In the event of a fire, when the fire detector 17 is activated, the motor-operated valve 23a is opened, and the fire extinguishing water on the primary side 1 is drained by the motor-operated valve 23a. If it does so, the water pressure in cylinder S2 will be reduced, piston 23b will leave | separate from the partition K, and the fire extinguishing water of the primary side 1 will flow into the secondary side 2. In this case, since the piston 22c does not operate, no running water signal is generated by the limit switch 21b.

  When the water pressure on the secondary side 2 reaches a predetermined value, the electric valve 23a is closed by the operation of the pressure switch 25, and the piston 23b is also in pressure contact with the partition wall K. At the same time, the electric valve 22a is opened.

  As the scale of the fire increases, when the sprinkler head 16 is opened, the fire extinguishing water is discharged from the piping on the secondary side 2. Since the water in the cylinder S1 flows to the secondary side 2, the water pressure in the cylinder S1 is reduced, and the piston 22c, which is the first valve body 22, moves away from the partition wall K. Since the valve body has been opened, the water on the primary side 1 flows to the secondary side 2 and is discharged from the sprinkler head 16. In this case, the shaft 21 a moves with the sliding of the piston 22 c, operates in contact with the limit switch 21 b, and transmits a running water signal to the control device 19.

  In this way, the stage of operation of the fire detector 17 opens the first valve body and issues a pre-actuation signal, and the stage of operation of the sprinkler head 16 issues a flow signal and the control device 19 is in full operation. Send a signal. By using the flowing water signal, information on the pre-operation or full-scale operation is reliably acquired, and a highly reliable pre-operation type sprinkler fire extinguishing equipment can be obtained as in the first embodiment.

Configuration diagram of the flowing water detection device 10 and the pre-actuated sprinkler fire extinguishing equipment 100 according to the first embodiment Configuration diagram of the flowing water detection device 20 and the pre-actuated sprinkler fire extinguishing equipment 200 according to the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Primary side 2 Secondary side 10, 20 Flowing water detection apparatus 11, 21 Flowing water detection part 12 1st gate valve 13 2nd gate valve 15, 25 Pressure switch 16 Sprinkler head 17 Fire detector 19 Control apparatus 22 1st valve body 23 Second valve body 26 Pressure regulating pilot valve 27 Drain valve 28 Strainer 100 Pre-acting sprinkler fire extinguishing equipment 200 Pre-acting sprinkler fire extinguishing equipment S1, S2 Cylinder K Bulkhead

Claims (4)

In sprinkler fire extinguishing equipment provided with a water flow detection device that generates a water flow signal when water flows between the primary side connected to the water source and the secondary side connected to the sprinkler head,
The flowing water detection device is provided in a main pipeline connected from the primary side to the secondary side and generates a flowing water signal when flowing water is generated, and the main pipeline is provided in the main pipeline in series with the flowing water detection unit. And a second gate valve that is provided in a sub-pipe parallel to the main pipe connected from the primary side to the secondary side and that partitions the sub-pipe. Sprinkler fire extinguishing equipment. In sprinkler fire extinguishing equipment provided with a water flow detection device that generates a water flow signal when water flows between the primary side connected to the water source and the secondary side connected to the sprinkler head,
The flowing water detection device includes a flowing water detection unit that generates a flowing water signal when flowing water from the primary side to the secondary side, and the primary side and the secondary side that generate flowing water that operates the flowing water detection unit. A first valve body that partitions the valve seat formed in the partition wall, and a second valve body that partitions the different valve seat formed in the partition wall at a position different from the valve seat partitioned by the first valve body. Sprinkler fire extinguishing equipment characterized by   A pressure switch is provided on the secondary side, and when the pressure switch detects that the pressure on the secondary side reaches a predetermined value by opening the second gate valve or the second valve body, the second partition The sprinkler fire extinguishing equipment according to claim 1 or 2, wherein the valve or the second valve body is closed and the first gate valve or the first valve body is opened. A timer for measuring the time since the opening of the second gate valve or the second valve body is provided, and the second gate valve or the second valve body is closed when the timer determines that a predetermined time has elapsed. The sprinkler fire extinguishing equipment according to claim 1 or 2, wherein the first gate valve or the first valve body is opened.

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