JP2008256391A - Gas shut-off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas shut-off device for detecting a disconnection in a closing valve built in a gas pressure regulator, and forwarding information on disconnection detection through radio communication to a gas meter and closing a shut-off valve built in the gas meter. <P>SOLUTION: This gas shut-off device is equipped with a gas pressure regulator 4, comprising an open/close valve 1, an open/close valve fault detection means 2 for detecting a fault in the open/close valve 1, and a slave radio transmission means 3 for transmitting fault-existence information detected by the detection means 2 through radio communication to the gas meter; and the gas meter 8, comprising a master radio reception means 5 for receiving the existence information transmitted by the transmission means 3 on the gas meter side, and a shut-off valve shut-off control means 6 for closing a shut-off valve 7, when the existence information transmitted by the transmission means 3 is received. When the detection means 2 detects a fault in the open/close valve 1, the existence of the fault is transmitted via the transmission means 3 and reception means 5, making it possible to close the shut-off valve 7 by the control means 6 and enhance security. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gas shut-off device that prevents explosion accidents, fire accidents, poisoning accidents, etc. due to gas in a gas appliance using LP gas or the like.

  Conventionally, this type of gas shut-off device includes a flow sensor that detects the flow rate of the gas flowing in the gas flow path, a flow signal transmitter that transmits the flow of gas detected by the flow sensor as a flow signal, and an upstream of the flow sensor. Electrically connected to the pressure sensor for detecting the gas pressure in the gas flow path, the pressure signal transmitter for transmitting the pressure fluctuation detected by the pressure sensor as a pressure signal, the flow signal transmitter and the pressure signal transmitter In the gas leakage detection device comprising the calculation means connected to the flow rate signal determination means for determining the presence or absence of the flow rate signal from the flow rate signal transmitter and the fluctuation of the pressure signal from the pressure signal transmitter. When the flow signal is determined to be “None” by the pressure signal determination unit and the flow signal determination unit, the pressure variation determined by the pressure signal determination unit is referred to, and the pressure variation is determined by a predetermined range. When it is determined that the inner, and leakage determination means for transmitting the leakage signal, the gas leakage detection device consisting of is disclosed (see Patent Document 1).

In addition, a flow rate measurement unit that outputs a flow rate signal corresponding to the amount of gas passing through, a shut-off unit that shuts off and opens the gas passage downstream from the device, and a flow rate signal that does not exist during a specific investigation period are monitored. The flow rate time zone is detected and held, and after that, when there is no flow rate time zone, a no flow rate learning unit that outputs a pressure inspection request signal, and when the flow rate signal is not received in the no flow rate time zone, the cutoff unit is instructed to shut off A gas shut-off device is disclosed that includes a pressure inspection unit that detects whether or not the gas passage blocked by the pressure detection unit that detects pressure fluctuations does not drop more than a predetermined value within a predetermined time. (For example, refer to Patent Document 2).
JP-A-6-258170 JP-A-8-121863

  However, in the conventional configuration, a gas pressure regulator and a shut-off valve are provided upstream from the gas meter, and the shut-off valve is provided in the event of an abnormality based on a flow rate signal transmitted from the gas meter or a signal from a pressure sensor provided on the upstream side. Although a configuration for operating and shutting off the gas flow path is disclosed, there is no disclosure of a configuration in which a shut-off valve is arranged on both the gas pressure regulator side arranged on the upstream side and the gas meter side arranged on the downstream side.

  In the conventional configuration, if the shutoff valve becomes in a state where the gas flow path cannot be shut down due to some abnormality, for example, disconnection or the like, if an abnormal situation occurs, the abnormal state will continue and a gas leak will occur. In the event of an abnormality involving gas outflow, etc., the gas cannot be shut off, which may lead to a dangerous state. Even if a shutoff event occurs and the abnormal state can be called to the center, The problem was that the gas could not be shut off.

  The present invention solves the above-described conventional problems, and provides gas shutoff means in the gas pressure regulator unit and the gas meter, respectively, and transmits and receives the check result information of the gas shutoff means to be regularly checked by wireless communication. In the unlikely event that one of the shut-off means is in an abnormal state, the other gas shut-off means is used to ensure a gas shut-off operation in the event of an abnormality.

  In order to solve the above-mentioned conventional problems, the gas shut-off device of the present invention includes a gas pressure regulator unit and a gas meter that adjust the gas pressure in the middle of a gas supply path connected to a gas cylinder or the like, and the gas pressure regulator unit A gas pressure regulator that adjusts a supply gas pressure to a predetermined gas pressure, an on-off valve that shuts off a gas supply path, an on-off valve failure detection means that detects a failure of the on-off valve, and the on-off valve failure detection And a slave unit wireless transmission means for transmitting the failure information detected by the means to the gas meter by wireless communication. The gas meter has a shut-off valve for shutting off a gas supply path and a failure transmitted by the slave unit wireless transmission means. A master radio receiving means for receiving information on the gas meter side, and a shut-off valve shut-off control means for closing the shut-off valve when receiving the malfunction information are provided.

  The gas meter also includes a shut-off valve that shuts off the gas supply path, a shut-off valve failure detection means that detects a failure of the shut-off valve, and a gas pressure adjustment by wireless communication of information on failure detected by the shut-off valve failure detection means. A base unit wireless transmission means for transmitting to the gas unit, the gas pressure regulator unit comprising a gas pressure regulator for adjusting the supply gas pressure to a predetermined gas pressure, an on-off valve for shutting off the gas supply path, The apparatus includes a slave unit radio reception unit that receives information with a failure transmitted by the master unit radio transmission unit, and an on / off valve shut-off control unit that closes the on / off valve when the failure information is received.

  According to the above invention, it is possible to detect a failure of the on-off valve of the gas pressure regulator unit, and to detect a failure of the shut-off valve in the gas meter. By sending the failure information, the gas meter shutoff valve can be used to shut off the gas in the event of an abnormality. If the shutoff valve in the gas meter is faulty, the failure information is sent to the gas pressure regulator unit. Since the gas shut-off at the time of abnormality can be performed using the on-off valve of the pressure regulator unit, the gas shut-off function at the time of abnormality can be ensured at a very high level.

  The gas shut-off device of the present invention has a configuration in which a plurality of shut-off means are arranged in the gas supply path and information can be transmitted to each other via the wireless communication means, so that even if one fails, the other is shut off. The function can be continued, and the gas shut-off function at the time of abnormality can be secured at a very high level.

  According to a first aspect of the present invention, a gas pressure regulator unit for adjusting a gas pressure and a gas meter are arranged in the middle of a gas supply path connected to a gas cylinder or the like, and the supply gas pressure is set to a predetermined gas pressure in the gas pressure regulator unit. A gas pressure regulator that adjusts the gas supply path, an on-off valve that shuts off the gas supply path, an on-off valve failure detection unit that detects a failure of the on-off valve, and information on failure detected by the on-off valve failure detection unit via wireless communication. A slave unit wireless transmission means for transmitting to the gas meter, the gas meter having a shutoff valve for shutting off the gas supply path, and a master unit wireless reception for receiving the failure information transmitted by the slave unit wireless transmission means on the gas meter side And a shut-off valve shut-off control means for closing the shut-off valve when the failure information is received.

  A failure of the on-off valve of the gas pressure regulator unit can be detected, information on the failure can be transmitted to the gas meter by wireless communication, and the gas can be shut off by the shut-off valve of the gas meter, thereby improving safety.

According to a second aspect of the present invention, a gas pressure regulator unit for adjusting a gas pressure and a gas meter are arranged in the middle of a gas supply path connected to a gas cylinder or the like, and the gas meter includes a cutoff valve for blocking the gas supply path, and the cutoff The gas pressure adjustment comprising: a shut-off valve fault detecting means for detecting a fault in the valve; and a master radio transmitting means for sending the fault detected information detected by the shut-off valve fault detecting means to the gas pressure regulator unit by radio communication. The unit includes a gas pressure regulator that adjusts the supply gas pressure to a predetermined gas pressure, an on-off valve that shuts off the gas supply path, and a slave unit that receives failure information transmitted by the master unit wireless transmission means The apparatus includes a wireless receiving means and an on / off valve shut-off control means for closing the on / off valve when the failure information is received.

  And the failure of the shutoff valve of the gas meter can be detected, the information with failure is transmitted to the gas pressure regulator by wireless communication, and the gas is shut off by the on / off valve of the gas pressure regulator, ensuring safety and combining them Therefore, safety can be further improved.

  According to a third aspect of the present invention, the gas meter has a gas pressure regulator inspection instruction means for instructing an operation state of the gas pressure regulator unit at a predetermined cycle, and a result analysis means for analyzing an inspection result of the gas pressure regulator unit. The gas pressure regulator unit includes an inspection control unit that performs an inspection operation and creation of an inspection result according to an inspection instruction from a gas meter, and the master unit radio transmission unit, the master unit reception unit, the slave unit radio transmission unit, The wireless communication means communicates with each other.

  In addition, the on-off valve of the gas pressure regulator unit is inspected periodically at a predetermined cycle, and the result of checking the on / off of the on-off valve based on the result, detects the abnormality of the shut-off means in advance. By transmitting and receiving information to and from the gas meter by wireless communication, it is possible to change the shut-off means in the event of an abnormality, and the on-off valve of the gas pressure regulator unit and the shut-off valve of the gas meter are mutually connected. By combining these, safety can be further improved.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the present embodiment.

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

  In FIG. 1, 1 is an on-off valve, 2 is an on-off valve failure detection means for detecting a failure of the on-off valve, and 3 is a slave unit that transmits information on failure detected by the on-off valve failure detection means to a gas meter by wireless communication. Wireless transmission means, 4 is a gas pressure regulator unit, 4a is a gas pressure regulator, 5 is a master wireless reception means for receiving failure information transmitted by the slave wireless transmission means on the gas meter side, and 6 is the malfunction When the presence information is received, the shutoff valve shutoff control means for closing the shutoff valve, 7 is constituted by a shutoff valve, and 8 is constituted by a gas meter.

  The operation and action of the gas shut-off valve configured as described above will be described below.

  First, when the open / close valve 1 in the gas regulator unit 4 is broken, for example, the open / close valve failure detection means 2 detects this. The on-off valve failure detection unit 2 transmits the detected disconnection failure information to the slave unit transmission unit 3 and transmits the information to the gas meter 8 via the slave unit wireless transmission unit 3. Then, the base unit radio receiving means 5 in the gas meter 8 receives the information indicating that there is a disconnection failure and transmits the information to the shutoff valve shutoff control means 6. The shutoff valve shutoff control means 6 receives the disconnection failure information and closes the shutoff valve.

  As described above, in this embodiment, the on / off valve failure detection means 2 is mounted on the on / off valve 1 of the gas pressure regulator 4, and the failure detection result is transmitted to the gas meter by wireless communication, whereby the shut-off valve shut-off control in the gas meter is achieved. The means 6 detects the on-off valve failure and shuts off the shut-off valve, so that the gas can be shut off on the gas meter side even when the gas regulator fails.

Although the present embodiment focuses on failure detection, if the gas regulator is provided with operation monitoring means for monitoring the operation state such as the pressure state, the operation state of the gas pressure regulator can be transmitted to the gas meter. The state of the gas pressure regulator can be monitored on the gas meter side.

(Embodiment 2)
FIG. 2 is a block diagram of the gas cutoff device according to Embodiment 2 of the present invention.

  In FIG. 2, 9 is a shut-off valve failure detecting means for detecting a failure of the shut-off valve 7 built in the gas meter 8, and 10 is a fault information detected by the shut-off valve failure detecting means 9 to the gas pressure regulator 4 by wireless communication. Is a base unit radio transmission unit that transmits to the base unit, 11 is a slave unit radio reception unit that receives the failure presence information transmitted by the base unit radio transmission unit, and 12 is an open / close switch built in the gas pressure regulator 4 upon receipt of the failure type information. The on / off valve shutoff control means for closing the valve 1 is used.

  The operation and action of the gas shut-off valve configured as described above will be described below.

  First, when the cutoff valve 7 in the gas meter 8 is broken, for example, the cutoff valve failure detection means 9 detects this. The shut-off valve failure detection means 9 transmits the detected disconnection failure information to the parent device transmission means 10 and transmits it to the gas pressure regulator unit 4 via the parent device wireless transmission means 10. Then, the cordless handset wireless reception means 11 in the gas pressure regulator unit 4 receives the disconnection failure information and transmits it to the on-off valve cutoff control means 12. The on / off valve shut-off control means 12 receives the disconnection failure information and closes the on / off valve.

  As described above, in this embodiment, the shutoff valve failure detection means 9 is mounted on the shutoff valve 7 of the gas meter 8, and the failure detection result is transmitted to the gas pressure regulator unit 4 by wireless communication. The on-off valve shut-off control means 12 in 4 detects the failure of the shut-off valve 7 and shuts off the on-off valve, so that the gas can be shut off on the gas pressure regulator side even when the gas meter fails.

(Embodiment 3)
FIG. 3 is a block diagram of the gas cutoff device according to Embodiment 3 of the present invention.

  In FIG. 3, 13 is a gas pressure regulator inspection instruction means for instructing an inspection of the operation state of the gas pressure regulator unit 4 at a fixed interval built in the gas meter 8, 14 is an inspection result analysis means for analyzing the inspection result, 15 Is constituted by an inspection control means for performing an inspection operation and creating an inspection result in accordance with an inspection instruction of the gas pressure regulator inspection instruction means 13 incorporated in the gas pressure regulator unit 4.

  The operation and action of the gas shut-off valve configured as described above will be described below.

  First, the gas pressure regulator check instructing means 13 in the gas meter 8 issues an instruction to check the operation state of the gas pressure regulator 4 at a fixed interval (for example, every day). The inspection instruction of the gas pressure regulator inspection instruction means 13 is transmitted to the gas pressure regulator 4 by the master radio transmission means 10. The inspection instruction is received by the slave radio reception means 11 and transmitted to the inspection control means 15.

  The inspection control means 15 determines, for example, whether a disconnection failure of the on-off valve 1 built in the gas pressure regulator unit 4 has occurred, or measures, for example, a pressure adjustment value (pressure value). Then, the inspection result of the inspection control unit 15 is transmitted to the gas meter 8 via the slave unit wireless transmission unit 3.

  In the gas meter 8, the base unit radio reception means 5 receives the inspection result, the inspection result analysis means 14 analyzes the inspection result, and if it is detected that the on-off valve 1 is broken, the control is sent to the cutoff control means 6. A shutoff instruction is issued and the shutoff valve 7 is shut off.

  As described above, in the present embodiment, the operation state of the gas pressure regulator 4 is checked on the gas meter side by checking the operation state of the gas pressure regulator at regular intervals by installing the gas pressure regulator inspection instruction means 13. Can be periodically monitored, and the process leading to the failure and the failure detection can be performed.

  Further, in this embodiment, the inspection timing of the gas pressure regulator inspection instruction means 13 is set at a constant interval. However, the inspection instruction setting means for remotely setting the value of the constant interval and the designated date and time from the outside, for example, using communication or the like. By providing, it is possible to specify an arbitrary time interval or date and time from the outside, and it is possible to monitor the operation state of the gas pressure regulator in accordance with the timing of the meter reading date of the gas usage amount.

  As described above, according to the present invention, the gas pressure regulator unit and the gas meter are provided with the gas shut-off means, respectively, and the check result information of the gas shut-off means to be periodically confirmed can be transmitted and received mutually by wireless communication. In the unlikely event that either of the shut-off means is abnormal, the other shut-off means can be used to ensure the gas shut-off operation at the time of abnormality, and it can be applied to a shut-off device with an enhanced shut-off function at the time of abnormality. It becomes possible.

The block diagram of the gas cutoff device in Embodiment 1 of this invention Block diagram of a gas cutoff device in Embodiment 2 of the present invention Block diagram of a gas cutoff device in Embodiment 3 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 On-off valve 2 On-off valve failure detection means 3 Child machine radio | wireless transmission means 4 Gas pressure regulator unit 4a Gas pressure regulator 5 Parent | base station radio | wireless reception means 6 Shut-off valve cutoff control means 7 Shut-off valve 9 Shut-off valve fault detection means 10 Child machine Wireless receiving means 11 Base unit wireless transmitting means 12 On-off valve shut-off control means

Claims (5)

A gas pressure regulator unit and a gas meter for adjusting the gas pressure are arranged in the middle of the gas supply path connected to the gas cylinder, etc.
The gas pressure regulator unit includes a gas pressure regulator that adjusts the supply gas pressure to a predetermined gas pressure, an on-off valve that shuts off the gas supply path, an on-off valve failure detection means that detects a failure of the on-off valve, A slave unit wireless transmission unit that transmits information on failure detected by the on-off valve failure detection unit to the gas meter by wireless communication;
The gas meter includes a shut-off valve that shuts off a gas supply path, a master unit radio receiving unit that receives failure information transmitted by the slave unit radio transmitting unit, and a shut-off valve that receives the fault information And a shutoff valve shutoff control means for closing the valve. A gas pressure regulator unit and a gas meter for adjusting the gas pressure are arranged in the middle of the gas supply path connected to the gas cylinder, etc.
The gas meter includes a shut-off valve that shuts off a gas supply path, a shut-off valve failure detection unit that detects a failure of the shut-off valve, and a gas pressure regulator unit that detects failure information detected by the shut-off valve failure detection unit by wireless communication. A master wireless transmission means for transmitting to
The gas pressure regulator unit includes a gas pressure regulator that adjusts the supply gas pressure to a predetermined gas pressure, an on-off valve that shuts off the gas supply path, and information indicating that there is a failure transmitted by the master wireless transmission means. A gas shut-off device comprising: a slave radio receiving means for receiving; and an on-off valve shut-off control means for closing the on-off valve when receiving the failure information. The gas meter comprises a gas pressure regulator inspection instruction means for instructing an operation state of the gas pressure regulator unit at a predetermined cycle, and a result analysis means for analyzing an inspection result of the gas pressure regulator unit,
The gas pressure regulator unit is equipped with inspection control means for performing inspection operations and creating inspection results according to inspection instructions from the gas meter,
The gas shut-off device according to claim 1 or 2, wherein the base unit radio transmission unit, the base unit reception unit, the sub unit radio transmission unit, and the sub unit radio reception unit communicate with each other. 4. The gas shut-off device according to claim 3, further comprising inspection instruction setting means for externally setting an inspection instruction timing of the gas pressure regulator inspection instruction means at a predetermined interval value and a designated date and time. The program for making a computer perform at least one part of the function in the gas cutoff device of any one of Claims 1-4.

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