JPS63168178A - Gas blocking apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention prevents gas accidents by shutting off gas passages when an abnormality occurs, and transmits information on the cause of the shutoff to a gas utility information center using a telephone line. The present invention relates to a gas cutoff device that is capable of transmitting data.

BACKGROUND OF THE INVENTION In recent years, emphasis has been placed on a TT-device for preventing gas accidents, and a conventional gas shutoff device will be described as an example thereof with reference to FIG. 3.

In Fig. 3, 1 is a flow rate sensor input section that inputs a flow rate signal from a gas meter, and 2 is a gas flow rate that inputs a flow rate pulse signal from flow sensor input section 1 to determine an abnormality in the gas flow rate flowing through the gas passage. A determination unit, 3 is an external sensor input unit that inputs a detection signal from an external sensor, and 4 receives signals from the gas flow rate determination unit 2 and the external sensor input unit 3, determines whether or not the gas flow is interrupted, and outputs a shutoff signal and a shutoff signal. A gas shutoff determination section outputs a display signal; 5 is a shutoff control section that drives and controls a shutoff valve, etc. according to the shutoff signal from the gas shutoff determination section 4; 6 is a JLED, etc., according to a shutoff display signal from the gas shutoff determination section 4; This is a display generation unit that displays cutoff information using .

In the above configuration, if the gas shutoff determination unit 4 determines that there is an abnormality, the gas passage is shut off by a shutoff valve or the like through the shutoff control unit 5, and the display unit 6 provides shutoff information to the consumer or the contacted gas supply company. Let me know. Shutdown information is notified by blinking patterns of LEDs, etc.

Problems to be Solved by the Invention However, with the above configuration, when the gas cutoff device is activated, the gas supply company does not know the reason for the cutoff until it receives notification from the consumer that the gas flow has been cut off, and the gas flow is interrupted. I can't give quick advice about the house. Further, even if consumers check gas shutoff information, it is difficult to understand the reason for the shutoff, and there is a problem in that appropriate measures cannot be taken without contacting the gas supply company.

The present invention solves the above problems, and when a gas cutoff device is activated at a consumer, the gas supply company can immediately grasp the reason for the cutoff, and can provide appropriate advice to the consumer. The purpose is to provide a gas cutoff device that can ensure safe operation.

Means for Solving the Problems In order to solve the above problems, the gas cutoff device of the present invention includes a flow rate sensor input section that inputs a flow rate signal from a gas meter, and a flow rate pulse signal inputted from the flow rate sensor input section. a gas flow rate determination unit that measures and monitors the gas flow rate flowing through the gas passage and determines whether or not there is an abnormality; an external sensor input unit that inputs a detection signal from an external sensor; a gas shutoff determination and shutoff event information generation section that inputs a signal from the gas flow rate determination section and generates a gas passage shutoff determination and shutoff event information; It is composed of a cutoff control section that outputs a cutoff signal, and a transmission interface section that sends the gas cutoff determination and cutoff reason information from the cutoff reason information generation section to the telephone line.

According to the above-described structure, when the gas passage is cut off due to an abnormality in the flow rate of gas flowing through the gas passage or the operation of an external sensor, information on the reason for the interruption is sent to the telephone line, and information on the connected gas utility is transmitted. Since the information is transmitted to the center, etc., the gas supply company that receives the shutoff event information can immediately confirm the shutoff reason and promptly respond to the customer.

EXAMPLE Hereinafter, a gas cutoff device according to an example of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a flow rate sensor input unit that inputs a flow rate signal from a flow rate sensor provided in a gas passage of a gas meter;
Reference numeral 2 denotes a gas flow rate determining unit which inputs the flow rate pulse signal from the flow rate sensor input unit 1, measures and monitors the gas flow rate flowing through the gas passage, and determines whether or not there is an abnormality; 3, which is connected to various external sensors; , an external sensor input section that inputs a detection signal from an external sensor, and a gas cutoff section 7 that inputs signals from the gas flow rate determination section 2 and external sensor input section 3 to determine whether the gas passage is shut off or the reason for the shutoff. Judgment and cutoff reason information generation section 6 is a gas cutoff judgment and cutoff reason information generation section 7
A cutoff control section 8 inputs a cutoff signal from a cutoff signal and controls the drive of a cutoff valve, etc., and a cutoff control section 8 configures the gas cutoff judgment and cutoff reason information from the cutoff reason information generation section 7 into a telegram for transmitting over a telephone line. This is a transmission interface unit that sends data to the line.

The operation of the gas cutoff device configured as above will be explained. The flow rate sensor provided in the gas meter is turned on and off every time the unit measurement volume of the gas meter is measured, and this signal is replaced by a flow rate pulse signal at the flow rate sensor input section 1.

This flow rate pulse signal is input to the gas flow rate determination section 2, and is integrated and stored as a flow rate per unit time.

Then, it is compared with a normal gas consumption pattern that has been registered in advance in the gas flow rate determination section 2, and is sent to the gas cutoff determination and cutoff reason information generation section T. The gas cutoff determination and cutoff reason information generation unit 7 determines whether there is an abnormality and whether to perform a gas cutoff, and if gas cutoff is necessary, outputs a cutoff signal to the cutoff control unit 6 and generates cutoff reason information. The interruption reason information is sent to the transmission interface unit 8. Then, the interruption reason information is configured as a predetermined message, and is sent from the transmission interface unit 8 to the telephone line.

Shutdown reason information includes total flow rate over shutoff, which is shut off when an impossibly large gas flow rate occurs compared to the meter number, and an unnaturally large increase in flow rate compared to the meter number. Individual maximum flow rate over-off shut off, shut off when gas continues to flow for an abnormally long time without any fluctuation in gas flow rate, safe continuous use time over shut off, 2 minutes when shut-off is restored. A return leakage shutoff that shuts off when gas flows during the shutoff mode, a pulsed shutoff that outputs a shutoff output when gas flows in the shutoff mode, and an external sensor that determines shutoff based on the signal from the external sensor input section 3. There is a blockage, etc.

As described above, according to this embodiment, when the above-mentioned cutoff event occurs, the gas passage is cut off, and the transmission interface section 8 transmits the cutoff reason information to the telephone line, thereby transmitting the gas utility information. Shutdown event information can be transmitted to the gas utility information center, and the gas utility information center can immediately confirm the shutoff reason for an abnormal shutoff that has occurred at a consumer, allowing prompt response to be taken.

Further, as in another embodiment of the present invention shown in FIG. 2, gas integrated flow rate value calculation/storage means 9 may be provided.

The difference in FIG. 2 from the above embodiment is that a gas integrated flow rate value calculation/storage means 9 is added to the configuration shown in FIG. It is inputted to the gas flow rate determination section 2 via the gas flow rate determination unit 2, and is also inputted to the gas integrated flow rate value calculation/storage means 9, and is stored after integration processing. This integrated and stored gas flow rate integrated value is sent to the gas utility information center via the transmission interface unit 8° telephone line when necessary.

As described above, by providing the gas integrated flow rate calculation/storage means 9 in the gas cutoff device having the transmission interface section 8 that sends gas cutoff cause information to the telephone line, the integrated gas flow rate value can be transmitted to the gas utility information center. It can be used as an automatic meter reading for a gas meter, but in this case, the flow rate sensor input section 1 and the transmission interface section 8
It is possible to create a more economical system configuration, such as by being able to share the information.

Effects of the Invention As described above, the gas cutoff device of the present invention has a flow rate sensor input section that inputs a flow rate signal from a gas meter, and a flow rate pulse signal from the flow rate sensor input section to measure the flow rate of gas flowing through a gas passage. , a gas flow rate determination unit that monitors and determines whether there is an abnormality, an external sensor input unit that inputs detection signals from an external sensor, and a gas flow rate determination unit that inputs signals from the external sensor input unit and the gas flow rate determination unit. A gas shutoff determination and shutoff event information generation section that generates passageway shutoff determination and shutoff reason information; a shutoff control section that outputs a shutoff signal based on the signal from the gas shutoff determination section; By providing a transmission interface unit that sends shut-off reason information to the telephone line, if an external sensor is activated or an abnormality occurs in the gas flow rate, the gas passage is shut off and the shut-off reason information is sent to the gas utility information center, etc. Therefore, the gas utility information center or the like can immediately take appropriate measures against the customer based on the reason for the shutoff, without the customer contacting the customer.

Therefore, the gas utility information center or the like can constantly monitor the status of the consumer's gas cutoff device to ensure safety.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a gas cutoff device in an embodiment of the present invention, Fig. 2 is a block diagram of a gas cutoff device in another embodiment of the invention, and Fig. 3 is a block diagram of a conventional gas cutoff device. . 1...Flow rate sensor input section, 2...Gas flow rate determination section, 3...External sensor input section, 5...
. . . Cutoff control unit, a. Figure 1 Figure 3

Claims (1)

[Claims] A flow rate sensor input section that inputs the flow rate signal from the gas meter, and a gas flow rate that measures and monitors the gas flow rate flowing through the gas passage by inputting the flow rate pulse signal from the flow rate sensor input section, and determines whether or not there is an abnormality. a determination unit, an external sensor input unit that inputs a detection signal from an external sensor, and a gas input unit that inputs signals from the external sensor input unit and the gas flow rate determination unit to generate gas passage blockage determination and blockage reason information. a shutoff determination and shutoff reason information generating section; a shutoff control section that outputs a shutoff signal based on the signal from the gas shutoff determination and shutoff reason information generating section; A gas cutoff device consisting of a transmission interface section that sends out data to a telephone line.