JP6239905B2 - Fire extinguishing equipment - Google Patents

Description

The present invention relates to a fire extinguishing equipment that opens a pre-actuating valve when a fire is detected by a fire detector and supplies pressurized fire extinguishing water to a secondary pipe, and then discharges the water by operating a sprinkler head.

  2. Description of the Related Art Conventionally, for example, a pre-actuated sprinkler fire extinguishing equipment is known as a fire extinguishing equipment that prevents erroneous water discharge due to damage to a sprinkler head.

  The pre-actuated sprinkler fire extinguishing equipment is composed of a pre-actuating valve device, a closed-type sprinkler head, a fire detector, and a pre-acting valve control panel installed for each protection section. The secondary piping of the pre-actuating valve device connected to the sprinkler head is filled with pressurized fire-fighting water or compressed air, or reduced to negative pressure, and activated by a fire alarm (single interlock) Control), or when both fire alarm and pressure reduction detection by sprinkler head operation are discriminated (double interlock control), the pre-actuating valve device is opened and pressurized fire-extinguishing water is discharged from the sprinkler head.

  On the other hand, when the sprinkler head is broken, since the fire alarm by the fire detector has not been determined, the pre-actuating valve device is not opened, and erroneous water discharge can be reliably prevented.

  The pre-acting valve device includes a pre-acting valve that functions as a main valve having an opening / closing drive mechanism, and an actuated electric valve that opens / closes the pre-acting valve by receiving open / close control remotely by a control signal from the pre-actuating valve control panel. I have. The actuating motor valve is provided with a limit switch that detects the fully open position and the fully closed position. By applying a drive voltage to the motor of the actuated motor valve from the pre-actuated valve control panel side and switching the polarity of the drive voltage, the motor When the fully open position is detected during the open operation, the motor drive is stopped and stopped at the fully open position, and the motor drive that detects the fully closed position is detected during the close operation. Stopped and stopped at the fully closed position.

JP-A-4-189372 JP-A-4-276271

  By the way, in such a conventional pre-acting sprinkler fire extinguishing equipment, in the normal monitoring state, the actuating motor operated valve of the pre-acting valve device is in the fully closed position, and thereby the pre-acting valve is kept in the closed state. ing.

  However, if the position of the limit switch that detects the fully closed position of the operating motorized valve slightly shifts to the open side due to changes over time due to vibration applied to the piping, etc., the pre-actuated valve control panel will In the fully closed position, the closing control of the actuated motor-operated valve is completed, and the actuated motor-operated valve is held in a slightly opened state, and the pressurizing chamber is maintained in order to maintain the valve closing of the opening / closing drive mechanism provided in the pre-actuated valve Is gradually pressurized (in the case of a pressure-reduction closed type opening / closing drive mechanism), the pre-actuating valve may be opened carelessly. Such a problem is not limited to the pre-actuated sprinkler fire extinguishing equipment, but also applies to an appropriate fire extinguishing equipment provided with an electrically operated actuation valve and a control valve for remote control.

  In addition, because the operating circuit is not in the drive state in order to reduce the current consumption, the pressurization chamber is gradually pressurized even if it is slightly opened due to noise or an erroneous operation of manual opening of the motorized valve, and pre-operation The valve may be opened carelessly.

An object of this invention is to provide the fire extinguishing equipment which can prevent the careless opening in the normal state of the valve apparatus accompanying a secular change reliably.

The present invention
An electrically operated valve that opens and closes by remote control ;
A control unit that controls the motor-operated valve in a steady state to a closed position or a normal position that is an open position, and controls the motor-operated valve to a predetermined operating position different from the normal position when a predetermined event is determined;
In the fire extinguishing equipment with
Control unit, according to a predetermined schedule in the steady state, outputs a constant position control signal for controlling the operation electrically operated valve in the direction of the normal position, the normal position for retaining the normal position by controlling the operating electric valve in the direction of the normal position comprising setting the holding means,
The steady position holding means is characterized by interrupting or prohibiting the control for holding the steady position of the motor-operated valve according to a predetermined schedule when receiving an input of a fire detection signal or a failure detection signal .

In addition, a position detector that detects that the operating motor operated to the closed position or the open position is provided, and the steady position holding means is connected to the operating motor valve even when the steady position is detected by the position detector. A control signal is output to control the motor operated valve in the direction of the steady position.

The steady position holding means may output an abnormal state when the steady position is not detected by the position detector after outputting the steady position control signal to the operating motor operated valve according to a predetermined schedule.

Further, the steady position holding means outputs a steady position control signal to the actuated motor-operated valve every predetermined cycle as a predetermined schedule .

(Basic effect)
According to the fire-extinguishing equipment of the present invention, for example, taking a pre-actuated sprinkler fire-extinguishing equipment as an example, the control unit of the pre-acting valve control panel outputs a closing control signal to the actuating motor-operated valve according to a predetermined schedule in a steady state. Therefore, the steady position holding means for controlling the operating motor operated valve in the closing direction to maintain the closed state is provided, so that the fully closed position of the operating motor operated valve is detected by the secular change due to vibration applied to the piping. Even if the operating motor valve is slightly opened by slightly moving the operating motor valve in the opening direction so that the detection of the fully closed position by the limit switch is recovered, According to the schedule, for example, by periodically outputting a close control signal to the actuated motor valve and controlling the actuated motor valve in the closing direction, it is ensured that the actuated motor valve is opened slightly. Recovers to the closed state, maintains the closed state, and in the normal state, the pre-actuated valve device opens carelessly, and it is possible to prevent water damage caused by accidental water discharge when the sprinkler head is damaged in this state. .

  Further, the steady position holding means outputs a steady position control signal to the motor operated valve and controls the motor operated valve in the direction of the steady position even when the position detector detects the steady position. The position can be reliably maintained.

  Further, the steady position holding means outputs the steady position control signal sequentially at an arbitrary time to the actuated motor operated valves in a plurality of protection sections at a predetermined cycle as a predetermined schedule, thereby steadying the actuated motor operated valves. It can be forced to move to a position, and a steady position can be reliably maintained.

In addition, the steady-state holding means follows the schedule when it outputs a closed control signal sequentially to a plurality of actuated motor-operated valves according to a predetermined schedule, and when it receives an input of a fire detection signal or a failure detection signal. Since the stationary position control of the operating motor operated valve is interrupted or prohibited, it is possible to prevent the situation such that the steady position control is erroneously performed when an abnormality such as a fire is detected and the water cannot be discharged.

An explanatory diagram showing the outline of a pre-actuated sprinkler fire extinguishing system as an example Explanatory drawing which took out the pre-acting valve apparatus of FIG. 1, and showed the detail The block diagram which showed embodiment of the function structure of the pre-acting valve control panel of FIG. Circuit block diagram showing an embodiment of a drive function in which position detection and open / close drive are separated Circuit block diagram showing an embodiment of a drive function in which position detection and open / close drive are integrated Explanatory drawing showing the switching operation of the position detection mechanism and limit switch of the motor operated valve Time chart showing switching operation between full-closed detection limit switch and full-open detection limit switch Explanatory drawing which shows the case where the position detection mechanism of the motor operated valve is finely moved together with the switching operation of the limit switch Flow chart showing control action of pre-actuated sprinkler fire extinguishing equipment Explanatory drawing which showed the outline of the sprinkler fire extinguishing equipment which controls a motor operated valve to an open position in a steady state

[Outline of pre-actuated sprinkler fire extinguishing equipment]
FIG. 1 is an explanatory view showing an outline of a pre-actuated sprinkler fire extinguishing equipment as an example of the fire extinguishing equipment of the present invention. As shown in FIG. 1, a fire pump 10 is installed in a pump room such as a basement floor of a building and is driven by a motor 12. The motor 12 is controlled to start and stop by the pump control panel 14. The fire pump 10 driven by the motor 12 sucks fire water from the water source tank 15 and supplies pressurized fire water to a water supply main pipe 16 arranged in the height direction of the building.

  The fire pump 17 is provided for the fire pump 10. A pressure tank 18 is provided to start the fire pump 10. The pressure tank 18 is connected to the water supply main pipe 16 and introduces pressurized fire-extinguishing water in the pipe to compress the air inside. A pressure switch 20 is provided in the pressure tank 18, and the pressure switch 20 detects that the internal pressure of the water supply main pipe 16 has dropped below a specified pressure and outputs a pressure reduction detection signal to the pump control panel 14, whereby the motor 12 To start the fire pump 10.

  A branch pipe 22 is drawn out from the water supply main pipe 16 for each protection section of the building, for example, by floor. A pre-acting valve device 24 is provided at a branch portion of the branch pipe 22. A closed-type sprinkler head 26 is provided in the branch pipe 22 on the secondary side of the pre-actuating valve device 24. In addition, a fire detector 36 is installed in the protection zone where the sprinkler head 26 is installed, and the sensor line from the fire detector 36 is connected to the pre-actuated valve control panel 34 via the self-fire report receiver 35. .

  A terminal test valve 28 is provided on the terminal side of the branch pipe 22, and its secondary side is connected to the drain pipe 32 through the orifice 30. The pre-actuating valve device 24 is closed in a normal monitoring state, and when the operation of the facility is started, the primary side is connected to the branch pipe 22 to which the secondary side sprinkler head 26 of the pre-acting valve device 24 is connected. The pressurized fire extinguishing water having the same specified pressure as the water supply main pipe 16 is filled. In addition, the secondary side branch pipe 22 of the pre-actuating valve device 24 is provided with an auxiliary water spigot 25 that houses a hose with a nozzle.

  As the double interlock control, the pre-actuating valve control panel 34 generates a fire alarm (fire detection) based on a fire detection signal from the fire detector 36, and a decompression alarm accompanying the operation of the sprinkler head 26, which will be clarified later. When both of the pressure reduction detections by the detection switch (pressure reduction detector) are determined, the pre-actuating valve device 24 is opened.

[Configuration of pre-actuated valve device]
FIG. 2 is an explanatory view showing the details of the pre-actuating valve device of FIG. As shown in FIG. 2, the pre-actuating valve device 24 includes a pre-acting valve 40 that functions as a main valve following the control valve 38, and the sprinkler head 26 is connected to the branch pipe 22 installed in the protection section on the secondary side. And the auxiliary water spigot 25 is connected.

  In addition, a fire detector 36 is installed in the protection zone where the sprinkler head 26 is installed, and is connected to the pre-actuated valve control panel 34 via a self-reporting receiver 35 by a sensor line.

  The pre-actuating valve 40 is a decompression type opening / closing drive mechanism. A piston 44 that also serves as a valve element is slidably provided in a cylinder 42 via a return spring 46, and the piston 44 contacts the valve seat 45. Thus, the primary side that receives the supply of pressurized fire-extinguishing water and the secondary side that connects the pipes of the sprinkler head 26 are in a closed state.

  In the initial state, the pressure-extinguishing water on the primary side is filled in the cylinder 42 with piping passing through the gate valve 76, the orifice 70, the check valve 72 and the gate valve 50, whereby the piston 44 is filled with the valve seat 45. To close the valve. A control chamber pressure gauge 74 indicating the pressure in the cylinder 42 is connected to this pipe via a signal stop valve 73.

The pre-actuating valve device 24 is opened by an actuating motor operated valve 48. The operating motor operated valve 48 includes a position detector 110 and a motor 112. The position detector 110 includes, for example, a limit switch that detects a fully open position and a limit switch that detects a fully closed position.

  The operating motor operated valve 48 is provided in a path connecting the inside of the cylinder 42 to the drain pipe, and is in a closed state in a normal monitoring state. When the actuating motor valve 48 is opened by the opening control signal from the pre-actuating valve control panel 34 shown in FIG. 1, the pressurized fire extinguishing water in the cylinder 42 is drained through the opened actuating motor valve 48, and the cylinder 42. As the internal pressure decreases, the piston 44 receives the pressure from the primary side, and the pre-actuating valve 40 becomes openable.

  In this state, when the sprinkler head 26 connected to the secondary side pipe is opened by receiving a thermal air flow due to a fire, the secondary side pressure is reduced by the water discharge from the activated sprinkler head 26, and the piston 44 is returned to the return spring. The pre-actuating valve 40 opens by striking against 46, and pressurized fire-extinguishing water is supplied from the primary side to the secondary side.

  When the pre-actuating valve 40 is opened, the pressure of the water supply main pipe 16 shown in FIG. 1 connected to the primary side thereof is reduced, and this pressure reduction is detected by the pressure switch 20 provided in the pressure tank 18, The pump control panel 14 starts the pump 10. Pressure reduction due to the operation of the sprinkler head 26 provided on the secondary side of the pre-actuating valve 40 is detected by a pressure reduction alarm pressure switch 58 that functions as a pressure reduction detector.

  Further, the flowing water to the secondary side due to the opening of the pre-actuating valve 40 is detected by a flowing water warning pressure switch 60. A piping from an opening hole opened in the valve seat surface of the valve seat 45 of the pre-actuating valve 40 is connected to the running water warning pressure switch 60 via a signal stop valve 62. The secondary side of the signal stop valve 62 is connected to the drainage side through the orifice 64.

  When the pre-actuating valve 40 is opened by the stroke of the piston 44, the piston 44 is separated from the valve seat 45, so that the primary side pressurized fire-extinguishing water is supplied to the piping for the water flow warning pressure switch 60 via the signal stop valve 62. Thus, when the water pressure is continuously applied for a predetermined time by the delay timer, the water flow warning pressure switch 60 is operated, and a water flow warning detection signal is output to the pre-actuated valve control panel 24. When the pre-actuating valve 40 is closed, the pressurized fire extinguishing water applied to the flowing water warning pressure switch 60 is drained through the orifice 64, and the flowing water warning pressure switch 60 is restored.

  A manual start valve 52 is provided in parallel with the operating motor operated valve 48. When the manual start valve 52 is opened, the pre-actuated valve 40 can be opened on site as in the case of the remote opening operation of the actuation motor operated valve 48.

  A pressure regulating valve 54 is provided on the pipe connected from the primary side to the secondary side of the pre-actuating valve 40. When the system operation of the pressure regulating valve 54 is started, pressurized fire extinguishing water is supplied from the primary side to the secondary side pipe connected to the sprinkler head 26 via the pressure regulating valve 54, and is used for a pressure reduction alarm. The pressure switch 58 is charged with a predetermined specified pressure at which the pressure switch 58 is deactivated.

  Further, in parallel with the pressure regulating valve 54, a pipe provided with a pressure regulating valve 82, an orifice 84 and a gate valve 84 sequentially from the primary side via the gate valve 76 is connected to the secondary side, and further the secondary side. Is connected to a pressure adjustment monitoring pressure switch 90 via a signal stop valve 88. A primary pressure gauge 78 is connected to this pipe via a signal stop valve 80.

  When the pressure in the secondary side pipe falls below the specified pressure, the pressure regulation monitoring switch 90 is activated and outputs a pressure regulation detection signal to the pre-actuated valve control panel 34. Upon receipt of the pressure regulation detection signal, the pre-actuated valve control panel 34 outputs the opening control signal to the piezoelectric regulating valve 82 and opens it, and the pressurized fire extinguishing water is supplied from the primary side to the secondary side piping and then lowered. When the pressure is restored and the pressure regulation monitoring switch 90 is restored, the pre-actuating valve control panel 34 outputs a closing control signal to the piezoelectric regulating valve 82 and closes the pressure in the secondary side pipe. Adjust pressure to maintain pressure.

[Configuration of pre-actuated valve control panel]
(Outline of pre-actuated valve control panel)
FIG. 3 is a block diagram showing an embodiment of the functional configuration of the pre-actuated valve control panel.

  As shown in FIG. 3, the pre-actuated valve control panel 34 includes a control unit 100, an operation unit 102, a display unit 104, and an alarm unit 105, and each of the pre-actuated valves shown in FIG. The devices 24-1 to 24-n are connected. Further, the drive unit 108 is provided in the pre-actuated valve control panel 34 corresponding to the pre-actuating valve devices 24-1 to 24-n. In addition, when not distinguishing the pre-acting valve devices 24-1 to 24-n, the pre-acting valve device 24 is used.

The pre-actuating valve devices 24-1 to 24-n have the configuration shown in FIG. 2, but the fire sensor 26, the pressure reducing alarm pressure switch 58, and the actuating electric valve 48 are taken out. Although the fire detector 26 is installed in the protective section of the pre-actuated valve device, it is shown in the pre-actuated valve device for convenience of explanation.

  The control unit 100 is a function realized by, for example, execution of a program, and uses, as hardware, a computer circuit having a CPU, a memory, various input / output ports, and the like.

The fire detector 26 provided on the side of the pre-acting valve devices 24-1 to 24-n for each protection section is connected to the control unit 100 by a sensor line, and the pressure reducing alarm pressure switch 58 is connected by a control line. In addition, the motor operated valve 48 and the position detector 110 are connected to each other by a control line via the drive unit 106.

  Further, the control unit 100 is provided with a steady position holding means 108 as a function realized by executing the program.

  The operation unit 102 is provided with various operation switches necessary for the control operation of the pre-actuating valve control panel 34. Examples of the operation switch include a main sound stop switch, a transmission stop switch, a failure sound stop switch, a sequential sound stop switch, a sensor interlock stop switch, a test recovery switch, a fire recovery switch, a pre-acting valve closing switch, and two digits. There is a dial type line selection switch for setting the line number.

  The display unit 104 is provided with various indicators necessary for the control operation of the pre-actuated valve control panel 34. This indicator is divided into protective compartments, for example, floors that are obliged to install pre-actuated sprinkler fire extinguishing equipment. Pre-actuated valve open indicator light, pre-actuated valve close indicator light, fire indicator light, secondary pressure drop alarm A lamp, a sensor line disconnection indicator lamp, a control line disconnection indicator lamp, and the like are provided. In addition, a telephone call lamp, an AC power lamp, a standby power lamp, a standby power test lamp, a storage lamp, a fuse blow lamp, and the like are provided.

  The alarm unit 105 is provided with a speaker for outputting a fire alarm and a failure alarm.

(Configuration of control unit)
When the control unit 100 of the pre-actuating valve control panel 34 determines both the fire detection by the fire sensor 36 and the decompression detection by the pressure-reducing alarm pressure switch 58 for each protection section as the double interlock control, the pre-acting valve An open control signal is output to an actuating motor operated valve 48 provided in the device 24 to remotely control the opening, and in accordance with this, the pre-actuating valve 40 is opened to control the sprinkler head 26 to spray pressurized fire-extinguishing water.

  In addition, as another pattern, the control unit 100 performs failure detection that cannot be detected by a fire detector, for example, both failure detection such as transmission failure, disconnection, short circuit, interlock stop, commercial power supply disconnection, and decompression detection by a decompression detector. If it is determined, an open control signal is output to the actuated motor operated valve 48 to perform the open control, and the pre-actuated valve device 24 is opened by the open control to discharge pressurized fire-extinguishing water from the sprinkler head 26.

[Embodiment of Actuated Electric Valve Drive Unit Separated from Position Detection and Open / Close Drive]
(Position detection and open / close drive)
FIG. 4 is a circuit block diagram showing an embodiment of the drive function of the actuated electric valve in which position detection and open / close drive are separated.

  As shown in FIG. 4, the electrically operated valve 48 includes a valve body 111 and a DC motor 112 (hereinafter referred to as “motor”), and transmits the rotation of the motor 112 in one direction to the valve body 111 via an appropriate opening / closing mechanism. The opening operation is performed, and the rotation of the motor 112 in the other direction is transmitted to the valve body 111 via the opening / closing mechanism to perform the closing operation. The rotation direction of the motor 112 is switched by switching the polarity of a predetermined DC drive voltage (hereinafter referred to as “drive voltage”) applied to the motor 112 from the drive unit 106 provided on the pre-acting valve control panel 34 side.

  The open / close position of the operating motor operated valve 48 is detected by a fully closed detection limit switch (hereinafter referred to as “fully closed detection LS”) 114 and a fully open detection limit switch (hereinafter referred to as “fully opened detection LS”) 116 provided in the position detector 100. The fully-closed detection LS114 has switching terminals a and b, and closes to the b side as shown in the figure at the fully-closed position, and switches to the a-side when moving from the fully-closed position in the opening direction. The fully open detection LS116 has switching terminals a and b, and closes to the b side at the fully open position, and switches to the a side when moving from the fully open position to the closing direction.

  The drive unit 106 applies a drive voltage with a predetermined polarity to the motor 48 of the actuating motor operated valve 48 when the full-close detection LS114 detects the fully-closed position and receives an opening instruction from the control unit 100 in a state where the fully-closed position is switched to the b side. Then, the valve body 111 is opened. When the operating motor operated valve 48 moves in the opening direction from the fully closed position, the fully closed detection LS114 is switched to the a side.

  When the fully open detection LS116 detects the fully open position and switches to the b side during the opening operation of the operating motor operated valve 48, the drive unit 106 cuts off the application of the driving voltage to the operating motor operated valve 48 and stops the motor 112. Hold the fully open position.

  On the other hand, when the drive unit 106 receives a close instruction from the control unit 100 in a state in which the full open detection LS 116 detects the full open position and is switched to the b side, the drive unit 106 applies a drive voltage having a reverse polarity to the motor 48 of the actuated electric valve 48. When applied, the valve body 111 is closed. When the operating motor operated valve 48 moves in the closing direction from the fully opened position, the fully opened detection LS116 is switched to the b side.

  When the fully closed detection LS114 detects the fully closed position and switches to the b side during the closing operation of the operating motor operated valve 48, the drive unit 106 cuts off the application of the reverse polarity driving voltage to the operating motor operated valve 48, and the motor 112. To hold the fully closed position.

(Configuration of steady position holding means)
The steady position holding means 108 provided in the control unit 100 causes the actuated motor operated valve 48 to output a closed control signal that functions as a steady position control signal according to an instruction to the drive unit 106 according to a predetermined schedule in the steady monitoring state. The valve 48 is controlled in the closing direction to maintain a closed position that is a steady position.

  As a schedule for the steady position holding means 108, a predetermined cycle, for example, a one-month cycle is set. When the steady position holding means 108 determines that the set period has been reached, the pre-acting valve devices 24-1 to 24-1 in a plurality of protection sections are set. Each drive unit 106 is instructed to perform the closing and holding control so that the closing control signals are sequentially output to the 24-n motor-operated valves 48. The drive unit 106 that has received an instruction for the closing and holding control from the closing and holding unit 108 applies a drive voltage having a polarity opposite to the polarity in the case of the opening operation to the motor 112 of the actuated motor operated valve 48, for example, about 1 second. The valve body 111 in the fully closed position is further forcibly operated in the closing direction, thereby performing control in the closing direction.

  In this case, the fully-closed detection LS 114 detects the fully-closed position and switches to the b side. Originally, further operation in the closing direction is prohibited, but the closing and holding control from the closing and holding unit 108 is prohibited. In response to this instruction, the drive unit 106 detects that the fully closed position LS114 has detected the fully closed position and has switched to the b side. A drive voltage having a polarity opposite to the polarity is applied to forcibly operate the valve body 111 in the fully closed position in the closing direction.

  The steady position holding means 108 inputs a fire detection signal or a failure detection signal when sequentially outputting a close control signal to the actuated motor-operated valves 48 of the pre-actuating valve devices 24 in a plurality of protection sections according to a predetermined schedule. Is received, the closing control of the actuated motor operated valve 48 according to the schedule is interrupted or prohibited. For this reason, when abnormalities such as a fire are detected and the operating motor operated valve 48 is controlled to open and water is discharged from the sprinkler head 26, the operating motor operated valve 48 is controlled to be closed by mistake to prevent the situation where water cannot be discharged. be able to.

The steady position holding means 108 outputs a closing control signal to the actuated motor operated valve 48 according to a predetermined schedule. When the fully closed position is detected by the full closing detection limit switch 114, the steady position holding means 108 is connected to a printing means such as a printer (not shown). normal state is printed out, when not detecting the fully closed position Ri by the full-closing detecting limit switch 114 so as to print out an abnormal state including the line number indicating the abnormal point the printing unit. For this reason, the abnormality that cannot be recovered even by the control of the steady position holding means 108 is recorded as a record so that it can be appropriately dealt with.

[Embodiment of Actuated Electric Valve Drive with Integrated Position Detection and Open / Close Drive]
(Configuration of drive circuit)
FIG. 5 is a circuit block diagram showing an embodiment of an actuated electric valve drive unit in which position detection and open / close drive are integrated, FIG. 5 (A) shows a fully closed stop, and FIG. 5 (B) is an open operation. FIG. 5 (C) shows a fully open stop, and FIG. 5 (D) shows a closing operation.

  As shown in FIG. 5A, the drive circuit 124 includes the motor 112 of the actuation motor operated valve 48, a fully closed detection LS114, a fully opened detection LS116, and diodes 134 and 136. Between the drive terminals 126 and 128, a fully closed detection LS114, a motor 112, and a fully open detection LS116 are connected in series, and diodes 134 and 136 are connected in parallel to the fully closed detection LS114 and the fully open detection LS116, respectively. Further, a fully closed detection terminal 130 and a fully opened detection terminal 132 are provided, and the fully closed detection signal E1 and the fully opened detection signal E2 can be output to the outside.

  The drive circuit 124 is an integrated drive circuit including the actuated motor operated valve 48 and the position detector 110 provided in the pre-actuated valve device 24 shown in FIG. The drive unit 106 provided in 34 applies a predetermined drive voltage to the drive circuit 124 based on the open control instruction of the control unit 100, and drives with a reverse polarity to the open control based on the close control instruction of the control unit 100. A voltage is applied to the drive circuit 124.

  Further, the full-closed detection signal E1 and the full-open detection signal E2 from the drive circuit 124 are sent to the pre-actuated valve control panel 34, and the open / closed state of the actuated electric valve 48 can be displayed as necessary.

(Position detection mechanism)
6A and 6B are explanatory views showing the switching operation of the position detection mechanism and the limit switch of the actuated electric valve. FIG. 6A shows the fully closed state, FIG. 6B shows the middle of the opening and closing, and FIG. (C) shows full open.

  As shown in FIG. 6 (A), the position detection mechanism connects a cam 138 to the valve shaft of the motor operated valve 48, and the cam 138 has a valve position 140 indicated by an arrow, and is different from the cam 138 by, for example, 90 °. Further, the fully-closed detection LS114 and the fully-open LS116 are fixed, and in this case, the cam 138 is rotated by 90 ° to move between the fully-closed position and the fully-open position.

  In the fully closed position of FIG. 6A, the valve position 140 operates the fully closed LS 114 to switch to the b side. At this time, the fully open LS 116 is inactive and switched to the a side. When the cam 138 rotates counterclockwise in the closing direction from the fully closed position in FIG. 6A, the fully closed detection LS114 is deactivated and switched to the a side as shown in the middle position in FIG. 6B. .

  When the cam 138 further rotates counterclockwise in the closing direction from the middle position in FIG. 6B, the fully open position shown in FIG. 6C is reached, and the fully open detection LS116 is activated and switched to the b side. When moving from the fully open position to the fully closed position, the movement is opposite to that shown in FIGS. 6C, 6B, and 6A.

  FIG. 7 is a time chart showing the switching operation between the fully closed detection LS114 and the fully open detection LS116.

  As shown in FIG. 7A, the fully closed LS 114 is operated in the fully closed position and switched to the b side, and is deactivated when the operating motor operated valve 48 slightly moves in the opening direction from the fully closed position. Switch to side a and hold it until it reaches the fully open position.

  As shown in FIG. 7B, the fully open LS 116 is operated at the fully opened position and switched to the b side. When the operating motor operated valve 48 moves slightly in the closing direction from the fully opened position, the fully opened LS 116 is inactivated. It is switched and held until it reaches the fully closed position.

(Drive circuit operation)
The operation of the drive circuit 124 shown in FIG. 5 is as follows.

  If the actuated motor-operated valve 48 has reached the fully closed stop in FIG. 5A, a drive voltage with the drive terminal 126 side added is applied to the drive terminals 126 and 128 at this time, and the motor 112 is closed. The fully closed position LS114 is switched from the a side to the b side, and the drive current flowing through the motor 112 is cut off to stop at the fully closed position. At this time, a full-closed detection signal E1 having the same voltage as the drive voltage is output from the full-closed detection terminal 130.

  In the case of operating in the opening direction from the fully closed stop in FIG. 5A, as shown in FIG. 5B, the drive terminals 126 and 128 have a drive voltage with the drive terminal 128 side positive, that is, drive with reverse polarity. Apply voltage. When a drive voltage with the drive terminal 128 side added in the fully closed state is applied, the drive current does not flow because the fully closed detection LS 114 is on the b side. At this time, the drive current passes through the diode 134 connected in parallel. Flowing. As a result, the motor 112 is driven in the opening direction, and the full-closed detection LS114 is switched from the previous b side to the a side.

  When the actuated motor operated valve 48 operated in the opening direction by applying the drive voltage as shown in FIG. 5B reaches the fully opened position, as shown in FIG. 5C, the fully opened detection LS116 is switched from the a side to the b side, The drive current flowing through the motor 112 is cut off, and it stops at the fully open position.

  In the case of operating in the closing direction from the fully open stop of FIG. 6C, a drive voltage with the drive terminal 126 side being positive is applied to the drive terminals 126 and 128 as shown in FIG. When a drive voltage that adds positive to the drive terminal 126 side is applied in the fully open stop state, the drive current does not flow because the full open detection LS116 is on the b side, and at this time, the drive current flows through the diode 136 connected in parallel. As a result, the motor 112 is driven in the closing direction, and the fully open detection LS116 is switched from the previous b side to the a side.

  When the actuated motor operated valve 48 operated in the closing direction by applying the driving voltage as shown in FIG. 5D reaches the fully closed position, the fully closed detection LS114 is changed from the a side to the b side as shown in FIG. It switches, the drive current which flows through the motor 112 is interrupted | blocked, and it stops in a fully closed position.

(Closed holding control for fine movement of fully closed detection LS)
FIG. 8 is an explanatory view showing a case where the position detection mechanism of the operating motor operated valve is finely moved together with the switching operation of the limit switch.

  FIG. 8A shows a case where the actuated motor operated valve 48 is fully closed, and the fully closed detection LS114 is operated as the cam 138 is rotated to the fully closed position, and is switched to the b side. If the full-closed detection LS114 is finely moved in the opening direction in response to a secular change due to piping vibration or the like in the fully-closed stop state, the full-closed detection LS114 is fully closed as shown in FIG. It is out of position and inactive, and switches from the b side to the a side.

In this state, when the driving voltage shown in FIG. 5 (D) is applied according to the closing control instruction from the steady position holding means 108, the actuated motor operated valve 48 is closed, and the fully closed stop state shown in FIG. 8 (A). Restore to force.

[Control action of pre-actuated sprinkler fire extinguishing equipment]
FIG. 9 is a flowchart showing a control operation when a fire occurs in the pre-actuated sprinkler fire extinguishing equipment. In FIG. 9, the process of the pre-actuating valve control panel 34 is indicated by a block, and other events and operations are indicated by double blocks.

  As shown in FIG. 9, when a fire occurs in step S1 (hereinafter, “step” is omitted), the fire detector 36 detects the fire in S2, and the control unit 100 of the pre-actuated valve control panel 34 determines the predetermined in S3. When the time accumulation operation is performed and the fire detection continues even after the accumulation time has elapsed, the fire detection is determined in S4.

  On the other hand, when the sprinkler head 26 is activated in response to a hot air current due to a fire in S5, a depressurization in the secondary side pipe of the pre-actuating valve 40 occurs in S6, and the depressurization alarm pressure switch 58 is activated as in S7. To output a decompression detection signal.

  The control unit 100 of the pre-actuating valve control panel 34 receives the decompression detection signal from the alarm pressure switch 58 and discriminates the decompression detection, whereby the AND condition is established by discriminating both the fire detection and the decompression detection, An open control signal is output to the operating motor operated valve 48, and the operating motor operated valve 48 is opened in S8.

  When the actuated motor-operated valve 48 is opened, as shown in FIG. 2, the pressure-extinguishing water in the cylinder 42 is drained and the pressure is reduced, and the piston 44 strokes in response to the pressure on the primary-side pressure-extinguishing water. The pre-actuating valve 40 shown in S9 is opened.

  When the pre-actuating valve 40 is opened, the flow path provided in the valve seat 45 is opened and the primary pressurized fire-extinguishing water is supplied to the water flow warning pressure switch 60, and the switch operation of S10 is performed after a predetermined accumulation time. Subsequently, in S11, as the pre-actuating valve 40 is opened, a pressure drop in the primary side pipe, that is, the water supply pipe 16, is generated. As a result, the pressure switch 20 of the pressure tank 18 shown in FIG. The fire extinguishing pump 10 is started and the fire extinguishing pump 10 is started to supply pressurized fire extinguishing water. The fire extinguishing water is discharged from the operating sprinkler head through the pre-actuated valve device in the open state, and the fire extinguishing in S14 Done.

  Subsequently, when it is confirmed that the fire is extinguished in S15, the actuating valve 48 is closed in S16 by operating the pre-actuating valve closing switch 162 of the operation unit 102 shown in FIG. 4 in S16. When the actuating motor-operated valve 48 is closed, the pre-actuating valve 40 is closed in S17 as shown in FIG. 2, and accordingly, the water flow warning pressure switch 60 is restored in S18, and the water discharge is stopped in S19.

[Fire extinguishing equipment with the open position as the steady position]
FIG. 10 is an explanatory diagram showing an outline of a wet sprinkler fire extinguishing facility that controls the motor-operated valve to an open position in a steady state.

  As shown in FIG. 10, the configurations of the fire pump 10, the motor 12, the pump control panel 14, the water source water tank 15, and the water supply main pipe 16 are the same as those in the embodiment of FIG. 1.

  From the water supply main 32, the branch pipe 22 is drawn out for each floor of the building through the control valve 160 functioning as an operating motorized valve and the water flow detection device 162, and the branch pipe on the secondary side of the water flow detection device 162 includes A closed sprinkler head 26 is connected.

  The control valve 100 uses an electric valve that can be controlled to open and close by driving a motor. The control valve 160 is held in the open position in the steady monitoring state, and the open position becomes the steady position. For this reason, the internal pressure of the water supply main pipe 32 is supplied to the secondary sprinkler head 26 through the control valve 160 provided in the branch pipe 22 in an open state and the flowing water detection device 162.

  The flowing water detection device 162 includes a flowing water detection switch 164. The flowing water detection switch 164 detects valve opening or pressure drop due to the water flow generated by the discharge of fire-extinguishing water when the sprinkler head 26 connected to the secondary branch pipe 22 is operated by receiving heat from a fire. The water flow detection signal is output to the sprinkler control panel 150 via the fire fighting repeater 152.

  A terminal test valve 28 and an orifice 30 are provided on the terminal side of the branch pipe 22, and the water flow detection device 162 is operated in a pseudo manner by a water flow that opens and flows the terminal test valve 28 during a test to perform a test operation such as a pump operation. .

  The sprinkler control panel 150 outputs a control signal to the control valve 162 via the fire fighting repeater 152. A fire detector 36 is installed in the protection zone of the sprinkler head 26, and a fire detection signal is output to the self-report receiving board 35 via the fire report repeater 154, and a fire is judged by the self-report receiving panel 35. Then, a fire signal is output to the sprinkler control panel 150 as a transfer signal.

  The sprinkler control panel 150 controls the opening of the control valve 160 provided in the branch pipe 22 to a steady position where the sprinkler control panel 150 is opened in the initial state where the operation of the facility is started. When the sprinkler head 26 is actuated in response to a thermal air current due to a fire, the secondary pressure is reduced due to water discharge from the actuated sprinkler head 26, and the valve body of the water flow detection device 162 is opened by the flowing water at this time. 164 is turned on and the sprinkler control panel 150 notifies the detection of running water.

  As the secondary pressure decreases due to water discharge from the sprinkler head 26, the pressure in the water supply main pipe 16 also decreases. This pressure reduction is detected by the pressure switch 20 provided in the pressure tank 18, and the pump control panel 14 10 is started.

  When it is confirmed that the fire has been extinguished, the control valve 160 is closed by the water discharge stop operation by the sprinkler control panel 150, the water discharge from the activated sprinkler head 26 is stopped, and the pump control panel 14 is instructed to operate the pump. To stop.

  The sprinkler control panel 150 is provided with a control unit 100 having the function of the steady position holding means 108 as in the case of the pre-actuated valve control panel 34 shown in FIG. Is provided with a position detector 110 for detecting an open position and a closed position, as in the case of the electrically operated valve 48 of FIG.

  The steady position holding means 108 provided in the sprinkler control panel 150 outputs an open control signal that functions as a steady position control signal to the control valve 160 according to a predetermined schedule in a steady state, and controls the control valve 160 in the opening direction. An open position that is a steady position is maintained. The schedule in this case is the same as that in the embodiment of FIG.

  In addition, the steady-state holding means 108 provided in the sprinkler control panel 150 inputs a fire detection signal or a failure detection signal when sequentially outputting an open control signal to the control valves 160 of a plurality of protection sections according to a predetermined schedule. Is accepted, the opening control of the operation control valve 160 according to the schedule is interrupted or prohibited. For this reason, when the control valve 160 is closed and the water discharge from the sprinkler head 26 is stopped along with the fire extinguishing, the open operation of the operating motor operated valve 48 is erroneously controlled to prevent the accidental water discharge. .

  Other functions of the steady position holding means 108 provided in the sprinkler control panel 150 are the same as those in the embodiment of FIG.

[Modification of the present invention]
(Single interlock)
In the above embodiment, when both the fire detection by the fire detector and the decompression detection by the decompression detector are discriminated, an open control signal is output to the actuated motorized valve to perform the opening control, and the pre-actuating valve is opened by the opening control. An example is a double-interlock control pre-actuated sprinkler fire extinguishing system that sprinkles pressurized fire extinguishing water from the sprinkler head, but outputs an open control signal to the actuated motorized valve when it detects fire detection by a fire sensor. Similarly, the present invention can be applied to a pre-actuated sprinkler fire extinguishing equipment of single interlock control that opens and controls the opening of the pre-actuating valve and sprinkles pressurized fire-fighting water from the sprinkler head.

  Even in the case of this single interlock, in addition to the pattern of opening control by outputting an open control signal to the actuated motorized valve by fire detection by the fire detector, failure detection that can not be detected by the fire detector, such as transmission failure, disconnection, When it is determined that a failure has been detected, such as a short circuit, an interlock stop, or a commercial power supply cut, an open control signal is output to the actuating motor operated valve 48 to open the control valve. Allow the pressurized fire-fighting water to drain.

(Secondary compressed air filling or evacuation)
Moreover, although said embodiment has taken the case where the secondary side piping of a pre-acting valve apparatus is filled with the water for pressurized fire extinguishing as an example, the sprinkler fire extinguishing which filled the secondary side piping with compressed air was taken as an example. The same can be applied to a sprinkler fire extinguishing equipment that negatively pressures the secondary side piping using equipment or a vacuum pump.

(Fire prevention equipment)
Further, the present invention can be similarly applied to fire prevention equipment automatic valves such as fire spread suppression, water spray in a tunnel, and water curtain.

(Other)
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

[Features of the present invention]
Here, the features of the present invention are enumerated as follows.
(Feature 1)
An electrically operated valve that opens and closes by remote control;
A position detector that detects that the actuated motor operated valve has moved to a closed position or an open position;
In a steady state, the actuated motor-operated valve is controlled to a closed position detected by the position detector or a steady position that is an open position, and when a predetermined event is determined, the actuated motor-operated valve is set to a predetermined position different from the steady position. A control unit for controlling the operation position;
In the fire extinguishing equipment with
According to a predetermined schedule in a steady state, the control unit outputs a steady position control signal for controlling the actuated motor valve in the direction of the steady position, and controls the actuated motor valve in the direction of the steady position to A fire extinguishing equipment provided with steady position holding means for holding the position (Claim 1).

(Feature 2)
In the fire extinguishing equipment of feature 1, the steady position holding means outputs a steady position control signal to the actuated motor valve even when the steady position is detected by the position detector. A fire extinguishing equipment that is controlled in the direction of a steady position (Claim 2).

(Feature 3) (Sequential method)
In the fire extinguishing equipment of feature 1, the steady position holding means sequentially outputs a steady position control signal to a plurality of actuated motor-operated valves at predetermined intervals as the predetermined schedule. Equipment (claim 3).

(Feature 4) (Interruption / prohibition of closed control due to fire or fault input)
In the fire extinguishing equipment according to the feature 1, when the steady position holding means sequentially outputs the steady position control signals to the plurality of motor-operated motor valves according to the predetermined schedule, the fire position detection signal or the failure detection signal is input. If accepted, the fire extinguishing equipment is characterized in that the control for maintaining the steady position of the motor-operated valve according to the schedule is interrupted or prohibited (Claim 4).

(Feature 5) (Double interlock of pre-acting SP fire extinguishing equipment)
In the fire extinguishing equipment of feature 1,
For each fire protection area,
A closed sprinkler head (SP);
A fire detector for detecting a fire in the protective compartment;
A pre-acting valve that is provided with an open / close drive mechanism that utilizes the pressure of water for pressurized fire extinguishing, and that is opened / closed in accordance with the open / close operation of the electrically operated valve;
A depressurization detector for detecting depressurization of the secondary side pipe of the pre-actuating valve due to the opening operation of the sprinkler head;
In a steady state, the actuated motor operated valve is moved to a closed position detected by the position detector to close the pre-actuated valve, and both fire detection by the fire sensor and reduced pressure detection by the reduced pressure detector are determined. A control unit that outputs an open control signal to the operating motorized valve in the case, and opens the pre-actuated valve by the open control to spray pressurized fire-fighting water from the sprinkler head;
Equipped with pre-actuated sprinkler fire extinguishing equipment with
The steady position holding means outputs a close control signal as a steady position control signal to the actuated motor-operated valve according to a predetermined schedule in a steady state, and controls the actuated motor-operated valve in a closing direction to hold the closed state. Fire extinguishing equipment characterized by

(Feature 6) (Double interlock sensor failure)
In the fire extinguishing equipment according to feature 5, the control unit outputs an open control signal to the motor-operated valve when both the failure detection incapable of fire detection by the fire detector and the pressure reduction detection by the pressure reduction detector are determined. A fire-extinguishing equipment that is controlled to open, and that the pre-actuating valve is opened by the opening control so that pressurized fire-extinguishing water can be discharged from the sprinkler head.

(Feature 7) (Single interlock of pre-acting SP fire extinguishing equipment)
In the fire extinguishing equipment of feature 1,
For each fire protection area,
A closed sprinkler head;
A fire detector for detecting a fire in the protective compartment;
A pre-acting valve that is provided with an open / close drive mechanism that utilizes the pressure of water for pressurized fire extinguishing, and that is opened / closed in accordance with the open / close operation of the electrically operated valve;
When the actuated motor operated valve is moved to the closed position detected by the position detector in a steady state to close the pre-actuated valve, and the fire sensor detects the fire detection, an open control signal is sent to the actuated motor operated valve. A control unit that opens the pre-actuating valve by the opening control and creates a water sprayable state by the subsequent opening operation of the sprinkler head;
In a pre-actuated sprinkler fire extinguishing system equipped with
The steady position holding means outputs a close control signal as a steady position control signal to the actuated motor-operated valve according to a predetermined schedule in a steady state, and controls the actuated motor-operated valve in a closing direction to hold the closed state. Fire extinguishing equipment characterized by

(Feature 8) (Single interlock sensor failure)
In the fire extinguishing equipment according to feature 1, the control unit outputs an open control signal to the actuated motor-operated valve when it detects a failure that cannot be detected by the fire detector, and performs the opening control. A fire-extinguishing system, wherein an operating valve is opened so that pressurized fire-extinguishing water can be discharged from a sprinkler head.

(Feature 9)
The fire extinguishing equipment according to claim 1, wherein the steady-state holding means outputs a closing control signal to the actuated electric valve for a predetermined time according to the predetermined schedule.

(Feature 10) (Opening / closing drive with separate position detection)
In the fire extinguishing equipment of feature 5 or 7,
The position detector includes a fully open detection limit switch that operates by detecting a fully open position, and a fully closed detection limit switch that operates by detecting a fully closed position,
The operating motor operated valve is
A valve body with an opening and closing mechanism;
A motor that opens and closes the valve body;
In a state where the fully closed position is detected by the operation of the fully closed detection limit switch, a drive voltage having a predetermined polarity is applied to the motor to open the valve body, and the fully open detection limit switch is activated during the opening operation. When the fully open position is detected, the motor is stopped, and in the state where the fully open position is detected by the operation of the fully open detection limit switch, a reverse polarity drive voltage is applied to the motor to close the valve body, A drive unit that stops the motor when the fully closed position is detected by operating the fully closed detection limit switch during the closing operation;
With
The steady-state holding means instructs the drive unit to close the valve body by applying a drive voltage having a reverse polarity to the motor according to a predetermined schedule.

(Feature 11) (Opening / closing drive with integrated position detection)
In the fire extinguishing equipment of feature 5 or 7,
The position detector includes a fully open detection limit switch that detects a fully open position and performs a switching operation, and a fully closed detection limit switch that performs a switch operation by detecting a fully closed position,
The operating motor operated valve is
A valve body with an opening and closing mechanism;
A motor that opens and closes the valve body;
The valve body is opened by applying a drive voltage of a predetermined polarity to the motor via the fully open detection limit switch and the fully closed detection limit switch at the fully open position of the valve body, and the fully open detection is performed during the open operation. In the switching operation by detecting the fully open position of the limit switch, the application of the drive voltage is cut off and the motor is stopped, and the motor is stopped via the fully open detection limit switch and the fully closed detection limit switch at the fully closed position of the valve body. The valve body is closed by applying a reverse polarity drive voltage to the valve, and during the closing operation, the application of the reverse polarity drive voltage is interrupted by a switching operation based on detection of the fully closed position by the fully closed detection limit switch. A driving unit for stopping the motor;
With
The steady-state holding means instructs the drive unit to close the valve body by applying a drive voltage having a reverse polarity to the motor according to the predetermined schedule.

(Feature 12) (Print output function)
In the fire extinguishing equipment of the feature 10 or 11, when the steady position holding means outputs a closing control signal to the actuated motor operated valve according to the predetermined schedule, when the fully closed position is detected by the fully closed detection limit switch Is a fire extinguishing system that causes the printing means to print out a normal state and causes the printing means to print out an abnormal state when the fully closed position is not detected by the fully closed detection limit switch.

24, 24-1 to 24-n: Pre-acting valve device 34: Pre-acting valve control panel 36: Fire detector 40: Pre-acting valve 42: Cylinder 44: Piston 45: Valve seat 48: Actuating motor operated valve 58: Depressurization alarm Pressure switch 100: control unit 102: operation unit 106: drive unit 108: steady position holding means 110: position detector 112: motor 114: fully closed detection limit switch 116: fully open detection limit switch 124: drive circuits 126, 128: Drive terminal 130: Fully closed detection terminal 132: Fully open detection terminal 138: Cam 140: Valve position 150: Sprinkler control panel 160: Control valve 162: Flowing water detection device

Claims (4)

An electrically operated valve that opens and closes by remote control;
A control unit that controls the motor-operated valve to a closed position or a normal position that is an open position in a steady state, and controls the motor-operated valve to a predetermined operating position different from the steady position when a predetermined event is determined; ,
In the fire extinguishing equipment with
The control unit outputs a steady position control signal for controlling the actuated motor operated valve in the direction of the steady position according to a predetermined schedule in a steady state, and controls the actuated motor operated valve in the direction of the steady position. A stationary position holding means for holding
The steady position holding means interrupts or prohibits the control to hold the steady position of the actuated motor operated valve according to the predetermined schedule when receiving an input of a fire detection signal or a failure detection signal. Fire extinguishing equipment.
The fire extinguishing equipment according to claim 1, further comprising a position detector for detecting that the actuating motor operated to the closed position or the open position,
The steady position holding means outputs a steady position control signal to the actuated electric valve to control the actuated motor valve in the direction of the steady position even when the steady position is detected by the position detector. Fire extinguishing equipment characterized by
The fire extinguishing equipment according to claim 1, further comprising a position detector for detecting that the actuating motor operated to the closed position or the open position,
The steady position holding means outputs an abnormal state if the steady position is not detected by the position detector after outputting the steady position control signal to the actuation motor operated valve according to the predetermined schedule. Fire extinguishing equipment.
2. The fire extinguishing equipment according to claim 1 , wherein the steady position holding means outputs the steady position control signal to the actuated motor-operated valve at predetermined intervals as the predetermined schedule.

Images