Automatic valve device and disaster prevention system

Abstract

To accurately determine the operational state of an automatic valve device.SOLUTION: An automatic valve device 50 includes: a main valve 51 that opens and closes a flow path of pressurized water supplied to a secondary-side water spray head from a primary side by operation of a piston 518; a pilot valve 52 or a manual activation valve 53 that operates the piston 518 by opening and closing a flow path of primary-side pressurized water supplied to a cylinder chamber 513 from the primary side; a first pressure switch 54 which switches its state according to the pressure of the primary-side pressurized water supplied to the cylinder chamber 513 with opening of the pilot valve 52 or the manual activation valve 53, and outputs a first signal; and a second pressure switch 56 which switches its state according to the pressure of the secondary-side pressurized water supplied to the secondary side with opening of the main valve 51, and outputs a second signal.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an automatic valve device and a disaster prevention system. [Background technology]

[0002] Patent Document 1 describes a technique for measuring the opening and closing control time of an automatic valve. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-233589 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the technology described in Patent Document 1, since the opening and closing control time is measured starting from when the repeater performs opening and closing control on the automatic valve, even if there is an abnormality in the communication between the repeater and the automatic valve and the opening and closing control does not reach the automatic valve, the measurement of the opening and closing control time is started according to the opening and closing control of the repeater. Since the opening and closing control time measured in this way is longer than normal, the automatic valve may be evaluated as degraded even though it is not degraded itself.

[0005] An object of the present invention is to accurately determine the operating state of an automatic valve device. [Means for solving the problem]

[0006] One aspect of the present invention provides an automatic valve device that includes a main valve that opens and closes a flow path of pressurized water supplied from the primary side to a secondary side water spray head by operation of a drive unit, a start-up valve that operates the drive unit by opening and closing the flow path of primary side pressurized water supplied from the primary side to the drive unit, a first pressure switch that switches its state in response to the pressure of the primary side pressurized water supplied to the drive unit by opening the start-up valve and outputs a first signal, and a second pressure switch that switches its state in response to the pressure of secondary side pressurized water supplied to the secondary side by opening the main valve and outputs a second signal. Effect of the Invention

[0007] According to the present invention, the operating state of the automatic valve device can be determined with high accuracy. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of a configuration of a disaster prevention system according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating an example of a configuration of an automatic valve device. [Diagram 3] FIG. 2 is a diagram illustrating an example of the configuration of a disaster prevention receiving panel. [Figure 4] 10A and 10B are diagrams illustrating an example of an operation of the automatic valve device at the time of startup. [Diagram 5] 11A and 11B are diagrams illustrating an example of an operation of the automatic valve device upon recovery. [Figure 6] 4 is a timing chart showing an example of the operation of the automatic valve device. [Figure 7] FIG. 11 is a diagram showing an example of signal exchange between a disaster prevention receiving panel and an automatic valve device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1. Configuration FIG. 1 is a diagram showing an example of the configuration of a disaster prevention system 1 according to this embodiment. The disaster prevention system 1 is installed in, for example, a tunnel, and when a fire occurs, it extinguishes the fire by sprinkling water. The disaster prevention system 1 includes a disaster prevention receiving panel 10, a signal converter 20, and a water spraying device 30. The water spraying device 30 includes a water spraying head 40 and an automatic valve device 50. The signal converter 20 is connected to the disaster prevention receiving panel 10 via a signal line 60. The disaster prevention receiving panel 10 and the signal converter 20 communicate with each other according to a serial transmission method. The automatic valve device 50 is connected to the signal converter 20 via a signal line 70.

[0010] The disaster prevention receiving panel 10 controls and monitors the disaster prevention system 1. If a fire breaks out in the tunnel, the disaster prevention receiving panel 10 controls the water spray equipment 30. The disaster prevention receiving panel 10 also has a function of recording the operation history of the automatic valve device 50, and provides the operation history of the automatic valve device 50 to the user. The user can determine the operation status of the automatic valve device 50 by analyzing the operation history of the automatic valve device 50. The disaster prevention receiving panel 10 is an example of a control panel according to the present invention.

[0011] The signal converter 20 relays signals between the disaster prevention receiving panel 10 and the automatic valve device 50. The signal converter 20 converts the signal transmitted from the automatic valve device 50 in accordance with a serial transmission method and transmits it to the disaster prevention receiving panel 10.

[0012] The water spray head 40 sprays mist water when a fire occurs. The automatic valve device 50 controls the water spray from the water spray head 40. The automatic valve device 50 supplies pressurized water to the water spray head 40 when a fire occurs.

[0013] 2 is a diagram showing an example of the configuration of the automatic valve device 50. The automatic valve device 50 includes a main valve 51, a pilot valve 52, a manually-started valve 53, a first pressure switch 54, a pressure regulating valve 55, a second pressure switch 56, and an automatic drain valve 57. The pilot valve 52 and the manually-started valve 53 are arranged in parallel.

[0014] This valve 51 opens and closes the flow path of pressurized water supplied from the primary side to the secondary side water spray head 40. This valve 51 is opened in the event of a fire, and supplies the pressurized water supplied from the primary side to the secondary side water spray head 40. On the other hand, this valve 51 is closed in the event of recovery, and stops the supply of pressurized water to the secondary side water spray head 40.

[0015] The valve 51 includes a body portion 511, a valve element 512, and a cylinder chamber 513. The body portion 511 is separated into a primary side and a secondary side by a partition wall 514. The primary side of the body portion 511 communicates with a primary side flow path 501. The secondary side of the body portion 511 communicates with a secondary side flow path 502. A communication hole 516 is formed in the partition wall 514, which serves as a flow path for pressurized water from the primary side to the secondary side.

[0016] Valve element 512 is provided to be movable in a direction perpendicular to the axis of body portion 511, and opens and closes communication hole 516. Valve element 512 is pressed by spring 517 from the primary side in a direction in which it abuts against the outer edge of communication hole 516. Valve element 512 has a piston 518.

[0017] The cylinder chamber 513 and the piston 518 are actuated by the supply of the primary side pressurized water from the primary side, and drive the valve 51 to open and close. The cylinder chamber 513 and the piston 518 are an example of a drive unit according to the present invention. The cylinder chamber 513 is a hollow cylindrical member. The piston 518 is inserted into the cylinder chamber 513. When the primary side pressurized water is supplied to the cylinder chamber 513, the inside of the cylinder chamber 513 is pressurized, and the piston 518 moves in the opening direction A1. As a result, the valve body 512 moves away from the outer edge of the communication hole 516, and the communication hole 516 is opened. On the other hand, when the supply of the primary side pressurized water to the cylinder chamber 513 is stopped, the inside of the cylinder chamber 513 is depressurized, and the piston 518 moves in the closing direction A2. As a result, the valve body 512 abuts against the outer edge of the communication hole 516, and the communication hole 516 is closed.

[0018] One end of a start-up pipe 521 is connected to the primary side of the body 511. The other end of the start-up pipe 521 is connected to the cylinder chamber 513 via a pilot valve 52 or a manual start valve 53. The start-up pipe 521 serves as a flow path for primary-side pressurized water supplied from the primary side to the cylinder chamber 513 in order to open the valve 51. The start-up pipe 521 also branches between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513, and is connected to the primary side of a pressure regulating valve 55. One end of a secondary-side pipe 522 is connected to the secondary side of the body 511. The other end of the secondary-side pipe 522 is connected to the secondary side of the pressure regulating valve 55.

[0019] The pilot valve 52 opens and closes the flow path of the primary-side pressurized water supplied from the primary side to the cylinder chamber 513 in accordance with the opening and closing control of the disaster prevention receiving panel 10. When the pilot valve 52 is opened by the opening control of the disaster prevention receiving panel 10 in the event of a fire, it opens the start-up piping 521 and supplies the primary-side pressurized water to the cylinder chamber 513. On the other hand, when the pilot valve 52 is closed by the closing control of the disaster prevention receiving panel 10 during recovery, it closes the start-up piping 521 and stops the supply of the primary-side pressurized water to the cylinder chamber 513.

[0020] The manual start valve 53 opens and closes, in response to a user's operation, a flow path for primary-side pressurized water supplied from the primary side to the cylinder chamber 513. When the manual start valve 53 is opened by a user's operation in the event of a fire, it opens the start-up piping 521 and supplies primary-side pressurized water to the cylinder chamber 513. On the other hand, when the manual start valve 53 is closed by a user's operation during recovery, it closes the start-up piping 521 and stops the supply of primary-side pressurized water to the cylinder chamber 513. The pilot valve 52 and the manual start valve 53 are examples of start-up valves according to the present invention.

[0021] The first pressure switch 54 is connected to the start pipe 521 on the secondary side as viewed from the pilot valve 52 or the manual start valve 53, that is, between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513. The state of the first pressure switch 54 is switched according to the pressure of the primary side pressurized water supplied to the cylinder chamber 513 by opening the pilot valve 52 or the manual start valve 53. The first pressure switch 54 is turned on when the pilot valve 52 or the manual start valve 53 is opened and the pressure of the primary side pressurized water supplied to the cylinder chamber 513 becomes equal to or higher than a predetermined value. The fact that the first pressure switch 54 is turned on indicates that the pilot valve 52 or the manual start valve 53 is opened. When the first pressure switch 54 is turned on, a contact signal indicating that the first pressure switch 54 is turned on is output from the first pressure switch 54 as a first ON signal. This first ON signal is transmitted to the disaster prevention receiving panel 10 via the signal converter 20.

[0022] On the other hand, the first pressure switch 54 turns off when the pilot valve 52 or the manual start valve 53 is closed and the pressure of the primary side pressurized water supplied to the cylinder chamber 513 falls below a predetermined value. The fact that the first pressure switch 54 is turned off indicates that the pilot valve 52 or the manual start valve 53 is closed. When the first pressure switch 54 turns off, a contact signal indicating that the first pressure switch 54 is turned off is output from the first pressure switch 54 as a first off signal. This first off signal is transmitted to the disaster prevention receiving panel 10 via the signal converter 20. The first on signal and the first off signal are examples of the first signal according to the present invention.

[0023] When the main valve 51 is opened, the pressure regulating valve 55 controls the opening of the valve body 512 so that the pressure of the secondary pressurized water becomes a predetermined value. In addition, the pressure regulating valve 55 causes a part of the primary pressurized water supplied to the cylinder chamber 513 to flow out to the secondary piping 522.

[0024] The second pressure switch 56 is connected to the secondary side pipe 522. The state of the second pressure switch 56 is switched according to the pressure of the secondary side pressurized water supplied to the secondary side by opening the main valve 51. The second pressure switch 56 is turned on when the main valve 51 is opened and the pressure of the secondary side pressurized water becomes equal to or higher than a predetermined value. The fact that the second pressure switch 56 is turned on indicates that the main valve 51 is opened. When the second pressure switch 56 is turned on, a contact signal indicating that the second pressure switch 56 is turned on is output from the second pressure switch 56 as a second on signal. This second on signal is transmitted to the disaster prevention receiving panel 10 via the signal converter 20.

[0025] On the other hand, the second pressure switch 56 turns off when the main valve 51 is closed and the pressure of the secondary side pressurized water falls below a predetermined value. The fact that the second pressure switch 56 is turned off indicates that the main valve 51 is closed. When the second pressure switch 56 turns off, a contact signal indicating that the second pressure switch 56 is turned off is output from the second pressure switch 56 as a second off signal. This second off signal is transmitted to the disaster prevention receiving panel 10 via the signal converter 20. The second on signal and the second off signal are examples of the second signal according to the present invention.

[0026] The automatic drain valve 57 is connected to the secondary side piping 522. When the pressure inside the secondary side piping 522 is reduced during recovery, the automatic drain valve 57 opens and drains the pressurized water inside the secondary side piping 522 to the outside.

[0027] 3 is a diagram showing an example of the configuration of the disaster prevention receiving panel 10. The disaster prevention receiving panel 10 includes a control unit 11, a storage unit 12, a communication unit 13, an operation unit 14, a display unit 15, and a sound output unit 16. These components are implemented in, for example, an FAPC. Each unit of the disaster prevention receiving panel 10 is connected by a bus.

[0028] The control unit 11 is a processor such as a CPU, and controls each part of the disaster prevention receiving panel 10. The control unit 11 also has a built-in clock to measure time. The storage unit 12 is a memory such as a RAM or EEPROM, and stores various data including programs for realizing the functions of the disaster prevention receiving panel 10 and the operation history of the automatic valve device 50. The communication unit 13 communicates with the signal converter 20 via a signal line 60 according to a serial transmission method. The communication unit 13 transmits and receives signals to and from the automatic valve device 50 via the signal converter 20. The communication unit 13 is an example of a receiving unit according to the present invention.

[0029] The operation unit 14 is, for example, an operation button, and is used by the user to operate the disaster prevention receiving panel 10. The display unit 15 is, for example, a liquid crystal display, and displays various information including the operation history of the automatic valve device 50. The display unit 15 is an example of an output unit according to the present invention. The sound output unit 16 is, for example, a speaker, and outputs various sounds including alarm sounds.

[0030] 2. Operation Fig. 4 is a diagram for explaining an example of the operation at the time of starting up the automatic valve device 50. During fire monitoring, as shown in Fig. 4(a), the main valve 51 is closed, and the primary side pressurized water is blocked by the valve body 512. The secondary side of the main valve 51 is empty. In addition, the pilot valve 52 and the manual start valve 53 are closed, and the primary side pressurized water in the start-up pipe 521 is blocked by the pilot valve 52 and the manual start valve 53.

[0031] When a fire occurs, the disaster prevention receiving panel 10 transmits an open signal to the automatic valve device 50 via the signal converter 20 to control the pilot valve 52 to open so as to activate the automatic valve device 50 and spray water from the water spray head 40. The disaster prevention receiving panel 10 determines that a fire has occurred based on a fire signal received from, for example, a fire detector (not shown). When the automatic valve device 50 receives the open signal, the pilot valve 52 is opened as shown in FIG. 4(b). Alternatively, the manual start valve 53 may be opened by a user operating the manual start valve 53.

[0032] When the pilot valve 52 or the manual start valve 53 is opened, the primary-side pressurized water supplied from the primary side flows through the start-up piping 521 into the cylinder chamber 513. When the pressure of the primary-side pressurized water in the start-up piping 521 between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513 reaches or exceeds a predetermined value, the first pressure switch 54 turns on and outputs a first on signal.

[0033] When the inside of the cylinder chamber 513 is pressurized by the primary side pressurized water supplied to the cylinder chamber 513, the valve body 512 starts to move in the opening direction A1. When the valve body 512 moves in the opening direction A1, as shown in FIG. 4(c), the valve body 512 moves away from the outer edge of the communication hole 516, and the communication hole 516, which serves as a flow path between the primary side and the secondary side, is opened. When the valve 51 is opened in this manner, the pressurized water flows from the primary side of the body part 511 to the secondary side through the communication hole 516. The secondary side pressurized water supplied to the secondary side of the body part 511 flows into the secondary side pipe 522 and pressurizes the inside of the secondary side pipe 522. When the pressure of the secondary side pressurized water in the secondary side pipe 522 becomes equal to or higher than a predetermined value, the second pressure switch 56 is turned on, and a second on signal is output from the second pressure switch 56. The pressurized water flowing from the secondary side of the body part 511 to the secondary side flow path 502 is supplied to the water spray head 40. This causes the water spray head 40 to spray mist-like water.

[0034] FIG. 5 is a diagram for explaining an example of the operation of the automatic valve device 50 at the time of recovery. This operation is started, for example, when a fire is extinguished and the original state is restored. FIG. 5(a) shows a state in which pressurized water is supplied from the automatic valve device 50 to the water spray head 40, similar to FIG. 4(c). At the time of recovery, the disaster prevention receiving panel 10 transmits a close signal for controlling the pilot valve 52 to be closed to the automatic valve device 50 via the signal converter 20. When the automatic valve device 50 receives the close signal, the pilot valve 52 is closed as shown in FIG. 5(b). Alternatively, the manual start valve 53 is closed by the user operating the manual start valve 53.

[0035] When the pilot valve 52 or the manual start valve 53 is closed, the supply of pressurized water to the cylinder chamber 513 is stopped. The pressurized water supplied to the cylinder chamber 513 is discharged to the secondary piping 522 via the pressure regulating valve 55, so that the pressure inside the cylinder chamber 513 is reduced and the valve body 512 starts to move in the closing direction A2. When the valve body 512 moves in the closing direction A2, the valve body 512 abuts against the outer edge of the communication hole 516, and the communication hole 516, which serves as a flow path between the primary side and the secondary side, is closed. When the valve 51 is closed in this way, the supply of pressurized water to the water spray head 40 on the secondary side is stopped. This stops the discharge of water from the water spray head 40.

[0036] After this valve 51 is closed, when the pressure of the primary side pressurized water in the start-up piping 521 between the pilot valve 52 or manual start-up valve 53 and the cylinder chamber 513 falls below a predetermined value, the first pressure switch 54 turns off and a first off signal is output from the first pressure switch 54.

[0037] Furthermore, when this valve 51 is closed, the pressure inside the secondary side piping 522 is reduced, and the automatic drain valve 57 is opened. When the automatic drain valve 57 is opened, the pressurized water remaining on the secondary side of this valve 51 and the pressurized water that has flowed out to the secondary side piping 522 via the pressure regulating valve 55 are drained to the outside from the automatic drain valve 57. When the pressure of the secondary side pressurized water in the secondary side piping 522 falls below a predetermined value, the second pressure switch 56 is turned off, and a second off signal is output.

[0038] FIG. 6 is a timing chart showing an example of the operation of the automatic valve device 50. FIG. 7 is a diagram showing an example of signal exchange between the disaster prevention receiving panel 10 and the automatic valve device 50. When a fire occurs, at time t1 shown in FIG. 6, the disaster prevention receiving panel 10 transmits an open signal for controlling the pilot valve 52 to the automatic valve device 50 via the signal converter 20 by the communication unit 13 as shown in FIG. 7. In addition, the control unit 11 of the disaster prevention receiving panel 10 stores the open control date and time in the memory unit 12 as the operation history of the automatic valve device 50. For example, if the transmission date and time of the open signal is "2022 / 01 / 21 11:36:30", this transmission date and time is stored as the open control date and time. This open control date and time is used as the date and time when the disaster prevention receiving panel 10 performed the open control on the automatic valve device 50.

[0039] At time t2 shown in FIG. 6, the automatic valve device 50 starts the opening operation of the pilot valve 52 in response to the reception of an open signal. At time t3, when the pressure of the primary side pressurized water in the start pipe 521 between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513 becomes equal to or higher than a predetermined value due to the opening of the pilot valve 52, the first pressure switch 54 is turned on. When the first pressure switch 54 is turned on, as shown in FIG. 7, a first on signal is transmitted from the automatic valve device 50 to the disaster prevention receiving panel 10 via the signal converter 20. At this time, the signal converter 20 converts the first on signal according to a serial transmission method and then transmits it to the disaster prevention receiving panel 10. When the control unit 11 of the disaster prevention receiving panel 10 receives the first on signal via the communication unit 13, the control unit 11 stores the opening date and time of the pilot valve 52 in the memory unit 12 as the operation history of the automatic valve device 50. For example, if the date and time of reception of the first on signal is "2022 / 01 / 21 11:36:33", this date and time of reception can be regarded as the date and time when the first pressure switch 54 was turned on. Therefore, this date and time of reception is stored as the date and time when the pilot valve 52 was opened. The date and time when the pilot valve 52 was opened is used as the date and time when the pilot valve 52 was opened. The date and time when the pilot valve 52 was opened is an example of a first date and time according to the present invention.

[0040] At time t4 shown in FIG. 6, the main valve 51 is opened, and at time t5, when the pressure of the secondary-side pressurized water in the secondary-side piping 522 becomes equal to or greater than a predetermined value due to the opening of the main valve 51, the second pressure switch 56 is turned on. When the second pressure switch 56 is turned on, as shown in FIG. 7, a second ON signal is transmitted from the automatic valve device 50 to the disaster prevention receiving panel 10 via the signal converter 20. At this time, the signal converter 20 converts the second ON signal according to a serial transmission method and then transmits it to the disaster prevention receiving panel 10. When the control unit 11 of the disaster prevention receiving panel 10 receives the second ON signal via the communication unit 13, the control unit 11 stores the opening date and time of the main valve 51 in the memory unit 12 as the operation history of the automatic valve device 50. For example, if the reception date and time of the second ON signal is "2022 / 01 / 21 11:36:43", this reception date and time can be regarded as the date and time when the second pressure switch 56 was turned on. Therefore, this reception date and time is stored as the opening date and time of the main valve 51. The opening date and time of the main valve 51 is used as the date and time when the main valve 51 is opened. The opening date and time of the main valve 51 is an example of a second date and time according to the present invention.

[0041] When recovery is performed, at time t6 shown in FIG. 6, the disaster prevention receiving panel 10 transmits a close signal for controlling the pilot valve 52 to the automatic valve device 50 via the signal converter 20 by the communication unit 13 as shown in FIG. 7. In addition, the control unit 11 of the disaster prevention receiving panel 10 stores the close control date and time in the memory unit 12 as the operation history of the automatic valve device 50. For example, if the transmission date and time of the close signal is "2022 / 01 / 21 11:57:00", this transmission date and time is stored as the close control date and time. This close control date and time is used as the date and time when the disaster prevention receiving panel 10 performed the close control on the automatic valve device 50.

[0042] At time t7 shown in FIG. 6, the automatic valve device 50 starts the closing operation of the pilot valve 52 in response to the reception of a close signal. At time t8, when the pressure of the primary side pressurized water in the start pipe 521 between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513 becomes less than a predetermined value due to the closure of the pilot valve 52, the first pressure switch 54 is turned off. When the first pressure switch 54 is turned off, as shown in FIG. 7, the automatic valve device 50 transmits a first off signal to the disaster prevention receiving panel 10 via the signal converter 20. At this time, the signal converter 20 converts the first off signal according to the serial transmission method and then transmits it to the disaster prevention receiving panel 10. When the control unit 11 of the disaster prevention receiving panel 10 receives the first off signal via the communication unit 13, it causes the memory unit 12 to store the closing date and time of the pilot valve 52 as the operation history of the automatic valve device 50. For example, if the date and time of reception of the first off signal is "2022 / 01 / 21 11:57:03", this date and time of reception can be regarded as the date and time when the first pressure switch 54 was turned off. Therefore, this date and time of reception is stored as the date and time when the pilot valve 52 was closed. The date and time when the pilot valve 52 was closed is used as the date and time when the pilot valve 52 was closed. The date and time when the pilot valve 52 was closed is an example of the first date and time according to the present invention.

[0043] At time t9 shown in FIG. 6, the main valve 51 is closed, and at time t10, when the pressure of the secondary-side pressurized water in the secondary-side piping 522 becomes less than a predetermined value due to the closure of the main valve 51, the second pressure switch 56 is turned off. When the second pressure switch 56 is turned off, as shown in FIG. 7, a second off signal is transmitted from the automatic valve device 50 to the disaster prevention receiving panel 10 via the signal converter 20. At this time, the signal converter 20 converts the second off signal according to the serial transmission method and then transmits it to the disaster prevention receiving panel 10. When the control unit 11 of the disaster prevention receiving panel 10 receives the second off signal via the communication unit 13, the control unit 11 stores the closing date and time of the main valve 51 in the memory unit 12 as the operation history of the automatic valve device 50. For example, if the reception date and time of the second off signal is "2022 / 01 / 21 11:57:13", this reception date and time can be regarded as the date and time when the second pressure switch 56 was turned off. Therefore, this reception date and time is stored as the closing date and time of the main valve 51. The closing date and time of the main valve 51 is used as the date and time when the main valve 51 is closed. The closing date and time of the main valve 51 is an example of a second date and time according to the present invention.

[0044] In this way, the memory unit 12 of the disaster prevention receiving panel 10 stores the operation history of the automatic valve device 50, including the open control date and time, the open date and time of the pilot valve 52, the open date and time of the main valve 51, the close control date and time, the close date and time of the pilot valve 52, and the close date and time of the main valve 51. When the user performs an operation to instruct the history display using the operation unit 14, the operation history of the automatic valve device 50 stored in the memory unit 12 is displayed on the display unit 15 as shown in FIG. 7. In addition, the operation history of the automatic valve device 50 stored in the memory unit 12 may be stored in a portable flash memory connected to the disaster prevention receiving panel 10. By looking at the operation history of the automatic valve device 50, the user can count the open time from the open date and time of the pilot valve 52 to the open date and time of the main valve 51, and the close time from the close date and time of the pilot valve 52 to the close date and time of the main valve 51. If this open time or close time is greater than a threshold value, there is a possibility that there is some malfunction in the automatic valve device 50. Therefore, the user can determine the malfunction of the automatic valve device 50 based on this open time or close time. The term "failure" used herein refers to a state in which something does not operate normally, and is a concept that includes not only an abnormal state, but also a state that shows signs of an abnormality.

[0045] According to the above-described embodiment, the user can count the open time and closed time from the operation history of the automatic valve device 50, thereby determining whether the automatic valve device 50 is not operating normally after receiving an open or close signal from the disaster prevention receiving panel 10.

[0046] Also, there may be a case where an abnormality occurs in the communication between the disaster prevention receiving panel 10 and the automatic valve device 50, and although an open signal or a close signal is transmitted from the disaster prevention receiving panel 10, the open signal or the close signal does not reach the automatic valve device 50. In this case, since an open signal or a close signal is transmitted from the disaster prevention receiving panel 10, the open control date and time or the close control date and time is stored in the operation history of the automatic valve device 50. However, since the pilot valve 52 does not operate, and the states of the first pressure switch 54 and the second pressure switch 56 do not change, the open date and time of the pilot valve 52, the open date and time of the main valve 51, the closed date and time of the pilot valve 52, and the closed date and time of the main valve 51 are not included in the operation history of the automatic valve device 50. By looking at such an operation history of the automatic valve device 50, the user can determine that the open control or the close control was performed, but the automatic valve device 50 is not operating, and therefore, there is an abnormality outside the automatic valve device 50, not a malfunction of the automatic valve device 50. Therefore, according to the above-described embodiment, the user can distinguish between an abnormality outside the automatic valve device 50 and a malfunction of the automatic valve device 50 itself.

[0047] Furthermore, for example, due to a malfunction of the pilot valve 52, even though the open control is not performed from the disaster prevention receiving panel 10, water may leak from the pilot valve 52, and the primary side pressurized water may flow through the starter pipe 521 toward the cylinder chamber 513. In this case, the states of the first pressure switch 54 and the second pressure switch 56 are switched in the same way as when the pilot valve 52 is opened, and the open date and time of the pilot valve 52 and the open date and time of the main valve 51 are stored in the operation history of the automatic valve device 50. However, since the open control is not performed from the disaster prevention receiving panel 10, the open control date and time are not included in the operation history of the automatic valve device 50. By looking at such an operation history of the automatic valve device 50, the user can determine that a malfunction has occurred in the pilot valve 52, and the open control from the disaster prevention receiving panel 10 has not been performed, and the pilot valve 52 is in an open state. Therefore, according to the above-mentioned embodiment, the user can also determine a malfunction of the automatic valve device 50 that does not involve such an open control.

[0048] 3. Variations The present invention is not limited to the above-described embodiment, and may be modified as follows. The following modifications may be used alone or in combination of two or more.

[0049] In the above-described embodiment, the control unit 11 of the disaster prevention receiving panel 10 may use the operation history of the automatic valve device 50 stored in the memory unit 12 to count the open time from the opening date and time of the pilot valve 52 to the opening date and time of the main valve 51, and the closed time from the closing date and time of the pilot valve 52 to the closing date and time of the main valve 51, and display them on the display unit 15. The control unit 11 may also compare this open time or closed time with a threshold value and determine whether or not there is a malfunction in the automatic valve device 50 based on the comparison result. As this threshold value, for example, the open time or closed time in the initial state of each automatic valve device 50 (hereinafter referred to as the "initial value") is used. For example, the control unit 11 determines that there is a malfunction in the automatic valve device 50 when the open time or closed time is greater than the initial value by a predetermined value or more, or is twice or more than the initial value. When it is determined that there is a malfunction, the control unit 11 may output an alarm. According to this modified example, it is possible to know whether or not there is a malfunction in the automatic valve device 50 without the user counting the open time and closed time and comparing them with the threshold value.

[0050] In the above-described embodiment, the output of the operation history of the automatic valve device 50 is not limited to displaying on the display unit 15 or storing in a portable flash memory. For example, the operation history of the automatic valve device 50 may be transmitted from the disaster prevention receiving panel 10 to an external device.

[0051] In the above-described embodiment, the automatic valve device 50 may have a two-stage water discharge function that initially discharges water at a low pressure for a certain period of time and then switches to a high pressure after the certain period has elapsed.

[0052] In the above-described embodiment, the present invention may be applied to a system other than the disaster prevention system 1 for a tunnel. For example, the present invention may be applied to a sprinkler system or a water spray system installed in a place other than a tunnel. In this case, a control and display panel of such equipment may be used instead of the disaster prevention receiving panel 10. This control and display panel is also an example of a control panel according to the present invention.

[0053] In the above-described embodiment, the configuration of the disaster prevention system 1 is not limited to the above-described example. The disaster prevention system 1 may be configured to include one or more of the above-described devices, or may be configured without including some of the devices. Furthermore, the configuration of the automatic valve device 50 is not limited to the above-described example. The automatic valve device 50 may be configured to include one or more of the above-described parts, or may be configured without including some of the parts.

[0054] In the above-described embodiment, the operations of the disaster prevention system 1, the disaster prevention receiving panel 10, the signal converter 20, and the automatic valve device 50 are not limited to the above-described examples. The order of the operation procedures of the disaster prevention system 1, the disaster prevention receiving panel 10, the signal converter 20, and the automatic valve device 50 may be changed as long as there is no contradiction. In addition, some of the operation procedures of the disaster prevention system 1, the disaster prevention receiving panel 10, the signal converter 20, and the automatic valve device 50 may be omitted.

[0055] Another embodiment of the present invention may provide a method having steps of operations performed in at least one of the disaster prevention system 1, the disaster prevention receiving panel 10, the signal converter 20, and the automatic valve device 50. Furthermore, yet another embodiment of the present invention may provide a program executed in the disaster prevention receiving panel 10. This program may be provided by being stored in a computer-readable recording medium, or may be provided by downloading via the Internet or the like.

[0056] In the above-described embodiment, the installation location of the first pressure switch 54 is not limited to the location shown in Fig. 2. The first pressure switch 54 may be provided at any position between the pilot valve 52 or the manual start valve 53 and the cylinder chamber 513. In another example, the first pressure switch 54 may be provided in the cylinder chamber 513. In addition, the installation location of the second pressure switch 56 is not limited to the location shown in Fig. 2. The second pressure switch 56 may be provided at any position on the secondary side of the main valve 51.

[0057] In the above-described embodiment, the automatic valve device 50 includes a detection switch that detects that the stem included in the drive unit of the valve 51 has moved from the fully closed position and outputs a first ON signal, and this detection switch may be used in place of the first pressure switch 54. The stem is a shaft connected to the valve body 512. Examples of the detection switch include a switch that uses a potentiometer and a switch lever. [Explanation of symbols]

[0058] 1: Disaster prevention system, 10: Disaster prevention receiving panel, 11: Control unit, 12: Memory unit, 13: Communication unit, 14: Operation unit, 15: Display unit, 16: Sound output unit, 20: Signal converter, 30: Water spray equipment, 40: Water spray head, 50: Automatic valve device, 51: Main valve, 52: Pilot valve, 53: Manual start valve, 54: First pressure switch, 55: Pressure regulating valve, 56: Second pressure switch, 57: Automatic drain valve, 60: Signal line, 70: Signal line, 501: Primary side flow path, 502: Secondary side flow path, 511: Body unit, 512: Valve body, 513: Cylinder chamber, 514: Partition wall, 516: Communication hole, 517: Spring, 518: Piston, 521: Start pipe, 522: Secondary side pipe

Claims

1. This valve opens and closes a flow path of pressurized water supplied from the primary side to the secondary side water spray head by operating the drive unit; A start valve that operates the drive unit by opening and closing a flow path of primary side pressurized water supplied from the primary side to the drive unit; A first pressure switch that outputs a first signal by switching a state according to the pressure of the primary side pressurized water supplied to the drive unit when the start valve is opened; a second pressure switch, the state of which is changed in response to the pressure of the secondary-side pressurized water supplied to the secondary side by opening the main valve, and which outputs a second signal; An automatic valve device comprising:

2. The first pressure switch is connected between the start valve and the drive unit to the flow path of the primary side pressurized water supplied to the drive unit when the start valve is opened. The automatic valve device according to claim 1.

3. The first pressure switch is turned on when the pressure of the primary-side pressurized water supplied to the drive unit by opening the start valve becomes equal to or higher than a predetermined value, and is turned off when the pressure of the primary-side pressurized water supplied to the drive unit by closing the start valve becomes lower than the predetermined value. The automatic valve device according to claim 1.

4. The drive unit includes a cylinder chamber, The first pressure switch is provided in the cylinder chamber. The automatic valve device according to claim 1.

5. The drive portion includes a stem. A detection switch is provided in place of the first pressure switch, which detects that the stem has moved from the fully closed position and outputs the first signal. The automatic valve device according to claim 1.

6. Equipped with an automatic valve device and a control panel, The automatic valve device is This valve opens and closes a flow path of pressurized water supplied from the primary side to the secondary side water spray head by operating the drive unit; A start valve that operates the drive unit by opening and closing a flow path of primary side pressurized water supplied from the primary side to the drive unit; A first pressure switch that outputs a first signal by switching a state according to the pressure of the primary side pressurized water supplied to the drive unit when the start valve is opened; a second pressure switch that outputs a second signal by switching a state according to the pressure of the secondary-side pressurized water supplied to the secondary side by opening the main valve; The control panel includes: a receiving unit that receives the first signal and the second signal output from the automatic valve device; a storage unit configured to store, when the first signal and the second signal are received, a first date and time when the state of the first pressure switch is switched and a second date and time when the state of the second pressure switch is switched, respectively; an output unit that outputs the first date and time and the second date and time stored in the storage unit; Disaster prevention system.

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