JP4100362B2 - Gas shut-off device - Google Patents

Description

  The present invention relates to a gas shut-off device for ensuring safety in using a gas after use of a gas meter.

  In a conventional gas shut-off device, a gas leak detection signal from a gas alarm operated by a commercial power source is input, and gas is shut off by a shut-off valve provided in the gas supply path based on the input gas leak detection signal The shut-off control device and the gas shut-off control device are configured using a gas alarm and a shut-off valve (see, for example, Patent Document 1).

FIG. 2 is a block diagram showing a configuration of a conventional gas cutoff device. In FIG. 2, in a state in which the gas leak alarm signal from the gas alarm device 30 is continuously input for more than 10 seconds, for example, at any time before the gas leak alarm signal continues for 45 seconds from the occurrence thereof. When a power failure occurs and continues for 30 seconds, for example, a gas shutoff command signal is generated and output to the shutoff valve 50 to close the shutoff valve 50 and shut off the flow of gas flowing through the gas supply path 60 Met.
JP 2003-279026 A

  However, in the configuration of the conventional gas shut-off device as shown in FIG. 2, when a power failure occurs, the shut-off valve is always driven and the gas is shut off in the entire area where the power failure occurs. After the recovery, the shut-off valve had to be returned, and the convenience for the gas user was lost. Moreover, since the presence or absence of power supply to the gas alarm is constantly monitored, there is a problem that battery consumption is accelerated.

  The present invention solves the above-mentioned conventional problems, and when a gas alarm outlet is unplugged due to a power failure or carelessness of a gas user, the gas leak in a state where the gas alarm cannot detect the gas leak state. It is possible to improve the convenience of the gas user without losing the safety in using the gas by driving the shut-off valve when gas is used or when there is an earthquake and shutting off the gas.

  Furthermore, after confirming the safety of the gas flow path automatically after the supply power supply is restored, the convenience of the gas user can be improved without losing the safety in using the gas by returning the shutoff valve. it can.

  In addition, by monitoring the presence or absence of power supply to the gas alarm device at regular intervals, the battery capacity can be increased by reducing battery consumption.

  In order to solve the above-described conventional problems, a gas shut-off device according to the present invention includes a shut-off valve provided in a gas flow path of a gas meter, a battery built in the gas meter that supplies driving power for the shut-off valve, and a gas Measures the gas flow rate through the flow path, outputs a flow rate pulse signal corresponding to the flow rate value, outputs a shut-off valve drive signal, and shuts off the valve to drive the shut-off valve. And the commercial power supply as a power source, monitor the gas leak state while the power is supplied, and output the gas leak alarm signal to the shut-off valve drive unit while detecting the gas leak state A gas alarm having a gas leak detector that drives the gas flow path and shuts off the gas flow path, and a power supply detector that outputs a power supply signal while power is supplied from the commercial power supply, and a commercial power supply for the gas alarm From the power supply detection unit. By stopping the power supply signal, if the flow rate pulse signal is received within a period in which the power supply signal cannot be received for a predetermined time or more, a power failure detection signal is output to the shutoff valve drive unit to drive the shutoff valve, and the gas flow By having a power supply determination unit that shuts off the road, the gas alarm prevents gas leaks when it is no longer possible to detect a gas leak due to a power failure or disconnection of the outlet, and drives the shut-off valve when using gas. By shutting off the gas, the convenience for the gas user can be improved without losing the safety in using the gas.

  The gas shut-off device of the present invention prevents gas leak when the gas alarm cannot detect the gas leak state when the gas alarm outlet is disconnected due to a power failure or carelessness of the gas user, and the use of gas Sometimes the shutoff valve is driven to shut off the gas, thereby improving the convenience for the gas user without losing the safety in using the gas.

  1st invention measures the gas flow rate which passes the gas flow path through the shut-off valve provided in the gas flow path of the gas meter, the battery built in the gas meter which supplies the drive power of the shut-off valve, and the flow rate A flow rate measurement unit that outputs a flow rate pulse signal corresponding to the value, a shut-off valve drive signal is output, a shut-off valve drive unit that closes the gas flow path by driving the shut-off valve, and a commercial power supply as the power supply The gas leakage state is monitored while the gas leakage state is monitored, and while the gas leakage state is detected, a gas leakage alarm signal is output to the cutoff valve drive unit to drive the cutoff valve and shut off the gas flow path. A gas alarm device having a detection unit and a power supply detection unit that outputs a power supply signal while power is supplied from the commercial power source, and the supply of the commercial power source of the gas alarm device is stopped, and the power supply detection unit The power supply signal is also stopped by stopping the power supply signal. When a flow rate pulse signal is received within a period during which the signal cannot be received for a certain time or more, the power supply determination unit outputs a power failure detection signal to the shut-off valve drive unit to drive the shut-off valve and shut off the gas flow path. It is characterized by that.

  According to the above configuration, when a gas alarm outlet is unplugged due to a power failure or carelessness of a gas user, the gas alarm prevents gas leakage when it is no longer possible to detect a gas leak, and shuts off when gas is used. By driving the valve and shutting off the gas, the convenience for the gas user can be improved without losing the safety in using the gas.

  According to a second aspect of the present invention, a shutoff valve provided in the gas flow path of the gas meter, a battery built in the gas meter for supplying drive power for the shutoff valve, a gas flow rate passing through the gas flow path, The flow measurement unit that outputs the flow rate pulse signal corresponding to the value and the shut-off valve drive signal is output, and the shut-off valve drive unit that closes the gas flow path by driving the shut-off valve, and the gas meter is vibrated and shocked Is detected, the seismic intensity detector outputs a seismic pulse signal, and the commercial power supply is used as a power source. The gas leakage state is monitored while the power is supplied, and the shutoff valve is detected while the gas leakage state is detected. A gas leak detector that outputs a gas leak alarm signal to the drive unit to drive the shut-off valve to shut off the gas flow path; and a power supply detector that outputs a power supply signal while power is supplied from a commercial power source. Gas alarm device and gas alarm device When the supply of commercial power is stopped and the power supply signal from the power supply detection unit is also stopped, if a seismic pulse signal is received within a period when the power supply signal cannot be received for a certain period of time, a power failure is detected by the shut-off valve drive unit. And a power supply determining unit that outputs a signal to drive the shutoff valve to shut off the gas flow path.

  According to the above configuration, when a gas alarm outlet is unplugged due to a power failure or carelessness of the gas user, the gas alarm prevents the gas leak when the gas leak cannot be detected, and the shut-off valve when an earthquake occurs The convenience of the gas user can be improved without losing the safety in using the gas by driving the gas and shutting off the gas.

  According to the third aspect of the invention, the supply of the commercial power supply is recovered after the period during which the power supply signal cannot be received for a predetermined time or longer, especially when the supply of the commercial power supply of the gas alarm is stopped in the first or second aspect of the invention. With this, when the power supply detection signal is output from the power supply detection unit and received by the power supply determination unit, it has a transmission unit that transmits a cutoff event signal to the notification unit of the gas device connected after the gas meter It is.

  According to the above configuration, since the shutoff valve is closed when the power supply signal is restored, the gas user cannot use the gas device, but the reason why the gas device cannot be used is displayed on the gas device notification unit. By doing so, the contents and the return method of the gas shut-off valve can be understood and dealt with immediately, so the convenience of the gas user can be improved.

  According to a fourth aspect of the present invention, in particular, in any one of the first to third aspects, the supply of the commercial power supply of the gas alarm is stopped. When supply is restored, a power supply signal is output from the power supply detection unit, and when the power supply determination unit has received the power supply signal, there is an automatic return unit that transmits a shutoff valve return signal to the shutoff valve drive unit. It is a thing.

  According to the above configuration, since the shutoff valve is closed when the power supply signal is restored, the power supply detection signal is output from the power supply detection unit, and when the power supply determination unit receives the power supply signal, the gas is automatically generated. After confirming the safety of the flow path, by returning the shut-off valve, it is possible to eliminate the trouble of the gas user himself / herself going to the gas meter and performing the return operation of the shut-off valve without losing the safety in using the gas. Therefore, convenience can be improved.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, a timer unit that outputs an operation permission signal at regular intervals, and a power supply determination unit that detects the presence or absence of a power supply signal when the operation permission signal is received It has.

  According to the above configuration, since the operation time of the power supply determination unit can be shortened by checking the presence / absence of the power supply signal at regular intervals, the current consumption is reduced and the battery capacity is increased. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a configuration diagram of a gas cutoff device according to a first embodiment of the present invention.

  In FIG. 1, a shutoff valve 3 provided in a gas flow path 2 of the gas meter 1, a battery 4 built in the gas meter 1 that supplies driving power for the shutoff valve 3, and a gas flow rate that passes through the gas flow path 2. A flow rate measurement unit 5 that outputs a flow rate pulse signal a corresponding to the flow rate value, and a cutoff valve drive unit that outputs a cutoff valve drive signal b and drives the cutoff valve 3 to close the gas flow path 2. 6 and when the gas meter 1 detects that vibration or shock has occurred, the seismic intensity detection unit 7 for outputting the seismic pulse signal c and the commercial power source 8 are used as a power source, and the gas leakage state is maintained while the power source is supplied. While monitoring and detecting a gas leak state, a gas leak detector 9 that outputs a gas leak alarm signal d to the shut-off valve drive unit 6 to drive the shut-off valve 3 to shut off the gas flow path, and commercial While the power is supplied from the power supply 8, the power supply signal e is output. The gas alarm 11 having the source supply detection unit 10 and the supply of the commercial power supply 8 of the gas alarm 11 are stopped, and the power supply signal e from the power supply detection unit 10 is also stopped. If the flow rate pulse signal a or the seismic pulse signal c is received within a period in which the signal cannot be received for a certain time or longer, the power supply detection signal f is output to the shut-off valve drive unit 6 to drive the shut-off valve 3 to shut off the gas flow path 2. It is a gas shut-off device having a power supply determination unit 12 to perform.

  Further, the supply of the commercial power supply 8 of the gas alarm device 11 is stopped, and the power supply signal e from the power supply detection unit 10 is also stopped. When the supply of the power supply 8 is restored, the power supply signal e from the power supply detection unit 10 is output, and when the power supply determination unit 12 is received, the notification unit of the gas equipment 13 connected after the gas meter 1 14 includes a transmission unit 15 that transmits a blocking event signal g to 14.

  Furthermore, the supply of the commercial power supply 8 of the gas alarm 11 is stopped, and the power supply signal e from the power supply detection unit 10 is also stopped. When the supply of the power supply 8 is restored, the power supply signal e from the power supply detection unit 10 is output, and when the power supply determination unit 12 has received the power supply signal e, the shutoff valve is returned to the shutoff valve drive unit 6. An automatic return unit 16 that transmits a signal h is provided.

  And it has the timer part 17 which outputs the operation permission signal i for every fixed time, and the power supply determination part 12 which detects the presence or absence of the power supply signal e when the operation permission signal i is received.

  In the present embodiment, when power is not supplied to the gas alarm 11 due to a power failure or when the outlet is disconnected, gas leakage may be detected when a gas leak occurs during a period when the power is not supplied. Can not. Therefore, when the gas alarm device 11 is supplied with power, the power supply signal e is output to the power supply determination unit 12, and when the gas alarm device 11 is not supplied with power, the power supply to the power supply determination unit 12 is supplied. The power supply determination unit 12 that determines whether the gas alarm device 11 is normally operated by the presence of the power supply signal e from the power supply detection unit 10 that stops the output of the signal e is a gas alarm device. If the flow rate pulse signal a and the seismic pulse signal c are received while it is determined that the power supply 11 is not supplied with power, the power failure detection signal f is output to the cutoff valve drive unit 6, and the cutoff valve drive unit 6 The drive signal b is output to the shutoff valve 3, and the shutoff valve 3 is driven to shut off the gas.

  Further, when the power supply of the gas alarm device 11 is restored by the restoration of the power failure and the outlet is connected, and the power supply signal e is output and the power supply determination unit 12 determines that the power supply is present, it is connected after the gas meter 1. The interruption event signal g is transmitted from the transmission unit 15 to the notification unit 14 of the gas appliance 13. The automatic return unit 16 confirms the safety of the gas flow path 2 and outputs a shut-off valve return signal h to the shut-off valve drive unit 6 if there is no problem. When the shut-off valve drive unit 6 receives the shut-off valve return signal h, the shut-off valve 3 returns the shut-off valve 3 to enable gas use.

  Further, when the power supply determination unit 12 receives the operation permission signal i sent from the timer unit 17 at regular intervals, the power supply determination unit 12 determines the presence or absence of power supply.

  Thus, when the outlet of the gas alarm device 11 is disconnected due to a power failure or carelessness of the gas user, the gas alarm device 11 prevents gas leakage when the gas leakage state cannot be detected. By driving the shutoff valve 3 during an earthquake and shutting off the gas, it is possible to improve the convenience for the gas user without losing the safety in using the gas.

  Further, since the shutoff valve 3 is closed when the power supply signal e is recovered, the gas user cannot use the gas equipment. Therefore, by displaying the reason why the gas device cannot be used on the notifying unit 14 of the gas device, the contents and the return method of the gas shut-off valve can be understood and dealt with immediately, thereby improving the convenience for the gas user. be able to.

  Further, since the shutoff valve 3 is closed when the power supply signal e recovers, the power supply detection unit 10 outputs the power supply signal e and the power supply determination unit 12 receives the power supply signal e. After confirming the safety of the gas flow path, the shut-off valve 3 is returned to eliminate the trouble of the gas user himself / herself going to the gas meter and performing the return operation of the shut-off valve without losing the safety in using the gas. Therefore, convenience can be improved.

  Since the operation time of the power supply determination unit 12 can be shortened by checking the presence / absence of the power supply signal e at regular intervals, the current consumption can be reduced to increase the capacity of the battery 4 capacity. Can be raised.

  As described above, the gas shut-off device according to the present invention can be applied to a use related to a gas shut-off device that ensures safety in use of gas when using gas after a gas meter.

The block diagram of the gas cutoff device in Embodiment 1 of this invention Configuration diagram of conventional gas shut-off device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas meter 2 Gas flow path 3 Shut-off valve 4 Battery 5 Flow measurement part 6 Shut-off valve drive part 7 Seismic intensity detection part 8 Commercial power supply 9 Gas leak detection part 10 Power supply detection part 11 Gas alarm 12 Power supply determination part 13 Gas equipment 14 Notification unit 15 Transmission unit 16 Automatic return unit 17 Timer unit

Claims (5)

  A shutoff valve provided in the gas flow path of the gas meter, a battery built in the gas meter that supplies driving power for the shutoff valve, and a gas flow rate that passes through the gas flow path is measured and corresponds to a flow rate value. A flow rate measurement unit that outputs a flow rate pulse signal, a shut-off valve drive unit that outputs a shut-off valve drive signal and drives the shut-off valve, and a commercial power supply as a power source. The gas leakage state is monitored while the gas leakage state is detected, and while the gas leakage state is detected, a gas leakage alarm signal is output to the shut-off valve driving unit to drive the shut-off valve to shut off the gas flow path. A gas alarm having a gas leak detector and a power supply detector that outputs a power supply signal while power is supplied from the commercial power supply, and the supply of the commercial power of the gas alarm is stopped, Power supply from power supply detector When the flow rate pulse signal is received within a period in which the power supply signal cannot be received for a predetermined time or longer, the power supply detection signal is output to the shut-off valve driving unit to drive the shut-off valve to stop the gas A gas shut-off device having a power supply determination unit that shuts off a flow path. A shutoff valve provided in the gas flow path of the gas meter, a battery built in the gas meter that supplies driving power for the shutoff valve, and a gas flow rate that passes through the gas flow path is measured and corresponds to a flow rate value. A flow rate measurement unit that outputs a flow rate pulse signal, a shut-off valve drive signal that outputs a shut-off valve drive signal, and a shut-off valve drive unit that closes the gas flow path by driving the shut-off valve. When detecting that, the seismic intensity detection unit that outputs a seismic pulse signal, and the commercial power supply as a power source, while the power is supplied, the gas leakage state is monitored, while the gas leakage state is detected, A gas leak detection signal that outputs a gas leak alarm signal to the shut-off valve drive unit to drive the shut-off valve and shuts off the gas flow path, and outputs a power supply signal while power is supplied from the commercial power source Power supply detection unit And the supply of the commercial power supply of the gas alarm is stopped, and the power supply signal from the power supply detection unit is also stopped, so that the power supply signal cannot be received for a predetermined time or more. A gas shut-off device comprising: a power supply determination unit that outputs a power failure detection signal to the shut-off valve driving unit to drive the shut-off valve and shut off the gas flow path when receiving a seismic pulse signal. When the supply of the commercial power supply of the gas alarm is stopped, the power supply signal is output from the power supply detection unit when the supply of the commercial power supply recovers after the period in which the power supply signal cannot be received for a certain period or more continues. 3. The gas cutoff device according to claim 1, further comprising: a transmission unit configured to transmit a cutoff event signal to a notification unit of a gas device connected after the gas meter when the power supply determination unit can receive. When the supply of the commercial power supply of the gas alarm is stopped, the power supply signal is output from the power supply detection unit when the supply of the commercial power supply recovers after the period during which the power supply signal cannot be received for a certain period or more continues. 4. The gas shut-off device according to claim 1, further comprising: an automatic return unit that transmits a shut-off valve return signal to the shut-off valve driving unit when the power supply determination unit has received the power supply signal. 5. . The gas according to any one of claims 1 to 4, further comprising: a timer unit that outputs an operation permission signal at regular intervals; and a power supply determination unit that detects the presence or absence of a power supply signal when the operation permission signal is received. Shut-off device.

Images