JP5187880B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

The present invention relates to a sprinkler fire extinguishing facility.

Conventionally, sprinkler fire extinguishing equipment has been widely used as fire extinguishing equipment installed in buildings. As shown in Patent Document 1, the sprinkler fire extinguishing equipment is provided on the secondary side of the flowing water detection device, the flowing water detection device, the secondary side pipe filled with pressurized water, and the falling pipe on the secondary side pipe. It is comprised from the closed type sprinkler head attached via, and the pressurized water supply apparatus provided in the primary side of the flowing water detection apparatus.
JP 2002-291932 A

  The closed type sprinkler head is opened by heat in the event of a fire, but may be opened if it is damaged by a strong impact such as external force. For example, even when a large earthquake occurs, an accident that the sprinkler head breaks and water leaks may occur.

  This is because when a building shakes due to an earthquake, the water supply pipe, falling pipe and sprinkler head fixed to the ceiling slab with suspension fittings shake together with the building, but they are attached to the C channel suspended from the ceiling slab. It is thought that the ceiling board vibrates in a different way from the building. That is, when a large earthquake occurs, the sprinkler head facing the room through the mounting hole provided in the ceiling panel hits the ceiling panel and is damaged.

  Therefore, an object of the present invention is to prevent the sprinkler head from being damaged and water leaking from the head when an earthquake occurs.

The present invention provides a sprinkler fire extinguishing equipment that is provided on the secondary side of the flowing water detection device and includes a secondary side pipe filled with pressurized fluid and a sprinkler head connected to the secondary side pipe.
A receiver for receiving via a communication network earthquake early warning, upon receiving the earthquake early warning, provided a function stopping means for temporarily stopping the water supply function of equipment, the function stop unit, the primary piping Consists of valve closing control means for controlling the provided water stop valve to close, and drainage control means for opening the drain valve connected to the secondary side pipe and draining the pressurized water in the secondary side pipe When the earthquake early warning is received, the valve closing control means closes the water stop valve, and the drainage control means opens the drain valve to drain the pressurized fluid in the secondary side pipe. It is a feature.

  In the sprinkler fire extinguishing equipment, when the earthquake early warning is received, the water supply function of the equipment is temporarily stopped, so that it is possible to prevent water leakage due to damage to the sprinkler head when an earthquake occurs. .

Specifically, function stopping means is constituted by a valve closure control means and drainage control means receives an emergency earthquake bulletin, The rewritable controlled to close the water stop valve provided in the piping, secondary pipe Control to open the drain valve connected inside. Therefore, water is not water into the sprinkler head side from the pressurized pumping water system, the water contained within the secondary side piping to be drained quickly from the drain valve, to prevent the head or et water leaks Can do .

  Moreover, the function stop means is comprised by the start stop control means, and will control to stop the start of a pump, if an earthquake early warning is received. For this reason, since water is not supplied from the pressurized water supply device to the sprinkler head side, water does not continuously leak from the head.

  This invention controls the apparatus which comprises a sprinkler fire extinguishing equipment using an emergency earthquake bulletin technique. Here, the earthquake early warning technology will be briefly described.

  Seismic waves are broadly divided into P waves (primary waves: longitudinal waves) that arrive relatively early and S waves (secondary waves: transverse waves) that arrive later and cause major destruction. The initial tremor and the latter tremor are called main motions. Earthquake damage is mainly caused by the latter major movement.

  The Earthquake Early Warning Technology uses seismometers installed throughout the country to observe the P wave of the earthquake and analyze its characteristics to estimate the magnitude and location of the earthquake, and the estimated magnitude and location of the earthquake. By transmitting the earthquake information about the earthquake (hereinafter referred to as the “Emergency Earthquake Early Warning”) to each direction in real time before the S wave that causes the main motion of the earthquake arrives, the physical and human damage caused by the main motion It is going to be limited.

   At present, the Earthquake Information Center (Earthquake Early Warning Center and the Japan Meteorological Agency) can receive the earthquake early warning via the communication network, and it is obtained before the arrival of the main earthquake motion using the Japan Meteorological Agency as an information source. It is possible information.

  An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing a sprinkler fire extinguishing system according to the present invention. In the figure, reference numeral 1 denotes a flowing water detection device which detects a flowing water phenomenon and has a pressure switch as a detecting means. A secondary side pipe 2 is provided on the secondary side of the flowing water detection device 1 and is filled with pressurized water as a pressurized fluid. A plurality of sprinkler heads 3 are connected to the secondary pipe 2, and a terminal test valve 4 as a drain valve is provided at the terminal.

  A drain valve 5 is connected to the secondary pipe 2 via a drain pipe 6. The drain pipe 6 is branched and connected from the secondary side of the flowing water detection device 1 in the secondary side pipe 2. The drain valve 5 is normally closed and is opened and closed by a control signal from a control panel 20 described later.

  Reference numeral 8 denotes a primary side pipe provided on the primary side of the flowing water detection device 1. A water stop valve 9 is provided in the primary side pipe 8. The water stop valve is normally open and is opened and closed by a control signal from the control panel 20 described later. The water stop valve 9 may be provided in the secondary side pipe 2.

  Reference numeral 10 denotes a pump which constitutes a pressurized water supply apparatus together with the water tank 11 and is provided on the proximal end side of the primary side pipe 8. The pump 10 is activated by a signal from the pump activation panel 12. In the primary side pipe 8, a pressure air tank 13 for pressurizing the inside of the pipe to a predetermined pressure is provided on the secondary side of the pump 10. The pressure air tank 13 has a pressure switch and detects a pressure drop in the pipe.

  A control panel 20 includes a receiving device 21 and function stop means 22. The receiving device 21 receives the earthquake early warning from the Japan Meteorological Agency 30 via the communication network 40. Moreover, the function stop means 22 stops the water supply function of a sprinkler equipment temporarily, when an emergency earthquake bulletin is received.

  The function stop unit 22 includes three units, that is, a valve closing control unit 24, a drainage control unit 25, and a start / stop control unit 26. However, the function stop unit 22 may have at least one control unit. The valve closing control means 24 is a means for controlling the water stop valve 9 to be closed when an emergency earthquake warning is received. Further, the drainage control means 25 is a means for controlling to open the drainage valve 5 or the terminal test valve 4 and drain the pressurized water in the secondary side pipe 2 when an emergency earthquake warning is received. The start / stop control means 26 is a means for controlling the start of the pump 10 to stop.

  Next, a case where an earthquake occurs in a prefecture near the building where the sprinkler fire extinguishing equipment is installed will be described. When an earthquake occurs, an earthquake is detected by a seismometer (not shown), and an emergency earthquake bulletin is transmitted from the Japan Meteorological Agency 30. The receiving device 21 of the control panel 20 receives the earthquake early warning via the communication network 40.

  Then, the drainage control means 25 of the control panel 20 outputs a valve opening signal and controls to open the drainage valve 5 and the end test valve 4. Thereby, the pressurized water in the secondary side piping 2 will be drained immediately. For this reason, before the main movement arrives, the inside of the secondary side pipe 2 can be made empty. For example, even if a large earthquake occurs and the head 3 is damaged, water is discharged from the head 3. There is no leakage.

  Moreover, the valve closing control means 24 outputs a valve closing signal and controls to close the water stop valve 9 when receiving the earthquake early warning. Thereby, since the flow path in the primary side pipe 8 is closed, the water supply to the secondary side pipe 2 is immediately stopped before the main movement reaches. For this reason, even if a large earthquake occurs and the head 3 is damaged, water is not supplied from the pressurized water supply devices 10 and 11 to the sprinkler head 3 side, so that water continuously leaks from the head 3. Absent.

  Further, the start / stop control means 26 outputs a stop signal to the pump start panel 12 when receiving the earthquake early warning, and controls to stop the start of the pump 10. Thereby, the continuous water supply to the primary side piping 8 accompanying the operation of the pump 10 is immediately stopped before the main movement reaches. For this reason, even if the epicenter is near, water has already leaked from the head 3 and the pressure in the pipe 8 has dropped, and the pump 10 is likely to be started in accordance with the operation of the pressure switch of the pressure air tank 13. The operation of the pump 10 can be interrupted. Therefore, since water is not supplied from the pressurizing device to the sprinkler head 3 side, water does not continuously leak from the head 3.

  The present invention is configured as described above, and the function stopping means 22 can temporarily stop the water supply function of the sprinkler facility when the earthquake early warning is received.

  Note that a seismic intensity calculation device may be connected to the receiving device 21 in the control panel 20. Usually, the earthquake early warning can be calculated together with the position information of the place where the information is received, so that the time at which the main motion arrives and the predicted value of the seismic intensity can be calculated. That is, the seismic intensity calculation device is a device that predicts the seismic intensity at the point where the facility is installed and the arrival time of the main motion from the emergency earthquake bulletin.

  This time and seismic intensity may be calculated by the seismic intensity calculation device, and it may be determined which control means of the function stop means is selected based on the arrival time of the main motion. For example, when the building with the sprinkler facility is close to the earthquake epicenter, the drainage by the drainage control means 25 described above may not be in time. In such a case, the control by the valve closing control means 24 and the start / stop control means 26 may be performed, and the drainage control means may be performed when there is a margin in the arrival time of the main movement.

  Moreover, if the seismic intensity calculated by the seismic intensity calculation device is a weak earthquake with a seismic intensity of 3 or less, it is assumed that the head is not easily damaged, and it is not necessary to temporarily stop the water supply function of the facility by the function stopping means. Well, you may decide whether to move the function stop means by the magnitude of the seismic intensity.

  The function stopping means stops the water supply function of the facility at least “temporarily” when the earthquake early warning is received. Here, the reason for limiting to temporary is that a fire is expected after the earthquake. For this reason, when a fire detector (not shown) is activated after receiving an earthquake early warning, or when a fire is confirmed by a disaster prevention center staff, a fire signal is input to the control panel to control the fire. The function stop means of the panel may be released, and the equipment may be restored so that water can be supplied from the sprinkler fire extinguishing equipment. In addition, in the restoration of equipment, if there is enough time, it is expected that the sprinkler head is damaged, so a compressor is connected to the secondary side pipe via the air pipe. Then, air may be introduced into the secondary side pipe, and it may be confirmed whether leakage due to head breakage has occurred, and then the control by the function stop means may be released.

  The present invention has been described with reference to an example of a normal wet sprinkler fire extinguishing system. May be.

It is a system diagram of the sprinkler fire extinguishing equipment of the present invention.

Explanation of symbols

1 Flowing water detection device, 2 Secondary pipe, 3 Sprinkler head,
4 Terminal test valve, 5 Drain valve, 9 Gate valve, 10 Pump,
12 pump start panel, 20 control panel, tt 21 receiver,
22 function stop means, 24 valve closing control means,
25 drainage control means, 26 start / stop control means,
30 Japan Meteorological Agency, 40 communication network,

Claims (3)

In the sprinkler fire extinguishing equipment provided on the secondary side of the flowing water detection device, comprising a secondary side pipe filled with pressurized fluid, and a sprinkler head connected to the secondary side pipe,
A receiving device for receiving the earthquake early warning via a communication network;
When the earthquake early warning is received, function stop means for temporarily stopping the water supply function of the facility is provided,
A valve closing control means for controlling the function stop means so as to close a water stop valve provided in the primary side pipe; and a drain valve connected in the secondary side pipe to open the secondary side pipe. A drainage control means for draining the pressurized water of
When the emergency earthquake bulletin is received, the valve closing control means closes the water stop valve, and the drainage control means opens the drain valve to supply pressurized fluid in the secondary side pipe. Sprinkler fire extinguishing equipment characterized by draining. As the function stop means, when the emergency earthquake warning is received, a stop signal is output, and a start stop that stops the start of a pump that is provided on the base end side of the primary side pipe and supplies water to the primary side pipe The sprinkler fire extinguishing equipment according to claim 1, further comprising a control means. A seismic intensity calculating device for predicting the seismic intensity at the point where the facility is installed from the emergency earthquake warning and the arrival time of the main motion is provided, and when the calculated seismic intensity is a weak earthquake with a seismic intensity of 3 or less, the function stopping means 3. The sprinkler fire extinguishing equipment according to claim 1 or 2, wherein the water supply function of the equipment according to claim 1 is not stopped.

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