JPH0631402Y2 - Gas leak inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a device for inspecting a gas leak in a conduit installed from a gas meter cock to a gas tap and an instrument connected to the gas tap.

<Prior Art> Regarding the gas leakage of the conduit which has been conventionally installed from the gas meter cock to the gas stopper, as shown in FIG. 4, a water column gauge (9) is attached to the gas stopper (8) and the gas stopper ( 8) Open the gas meter cock (1
0) is closed, and pressure fluctuations are checked for a predetermined time or longer for inspection.

<Problems to be Solved by the Invention> In the above-described conventional gas leakage inspection method, since a water column gauge is attached to the gas plug, an inspector must climb up into the house at the time of inspection. Therefore, if the household to be inspected is absent, it cannot be inspected.

In addition, an inspector must be attached to the gauge during the inspection, which is inefficient.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to perform a gas leak inspection without entering a house, and even if there is no person under inspection. The object is to provide a good portable gas leak inspection device.

<Means for Solving the Problems> In order to achieve the above object, the gas leakage inspection apparatus of the present invention is configured separately from the gas meter, and is the minimum gas indicating vehicle peripheral surface of the gas consumption display section of the existing gas meter. Installed on the outside of the gas meter, the pointer sensor that optically detects the movement of the minimum indicator vehicle and generates a detection signal, and the pointer sensor is detachably attached to the existing gas meter. It is provided with an attaching means to be attached and a display device which is connected to the pointer sensor to input a detection signal of the sensor and which performs a predetermined display when the input signal is not input for a predetermined time or longer.

<Operation> The gas leakage inspection device configured as described above can be carried to a home to be inspected and attached to an existing gas meter, so that the movement of the indicator indicating the minimum position of the gas consumption display portion of the gas meter can be changed to the minimum position. Detection is performed based on an optical change associated with the movement of a number or scale on the peripheral surface of the indicated vehicle, and the presence or absence of gas leakage is determined based on the state of the movement to provide a necessary display.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

In the figure, (B) is a pointer sensor, (C) is a display device, and both (B) and (C) are electrically connected using a battery housed in the display device (C) as a power source.

The pointer sensor (B) is attached to the gas meter (A) and detects the rotation of the minimum indicator wheel (2) of the gas consumption display (1) of the gas meter (A). For example, one light emitting diode is used. And a plurality of photo couplers, and the plurality of photo couplers receive the projection light from the light emitting diode, and the detection signal is output when the relationship of the light receiving level of each photo coupler changes.

The pointer sensor (B) is prepared separately from the gas meter (A), and the light emitting diode and the photocoupler are provided on the peripheral surface of the minimum indicator vehicle (2) of the gas consumption display section (1) of the gas meter (A). The gas meter (A) is provided with an attaching means (3) for easily attaching and detaching the gas meter (A).

The attaching means (3) may be configured as a band type as shown in the drawing, or may be configured by a magnet or the like.

On the other hand, the display device (C) is provided with an operation switch (4), a timer (5), a leakage determination means (6), a display means (7), etc., and the timer (5) is a pointer sensor when the operation switch (4) is turned on. When the detection signal of (B) is not generated, it is started at the same time when the operation switch (4) is turned on, and when the operation signal of the pointer sensor (B) is generated when the operation switch (4) is turned on, the detection signal disappears. The leak judging means (6) is configured to be reset by the generation of a detection signal, and the leakage determination means (6) is input with the count of the timer (5) and the detection signal of the pointer sensor (B). It is configured to generate an output on the display means (7) when it is continued for a predetermined time (for example, 5 minutes) or more.

The display means (7) comprises a lamp, and the leakage determination means (6)
It is configured to light up when the output from is received.

Once the display means (6) is turned on, it is not turned off until the operation switch (4) is turned off.

In the embodiment described above, a photoelectric sensor is used as the pointer sensor (B) and the display means (7) of the display (C).
Although the lamps are used as the above, they can be replaced with other appropriate optical system sensors or display means. Further, the pointer sensor and the display can be integrated.

Thus, such a gas leakage inspection means carries this with the site for the place to be inspected, and uses its pointer sensor (B) as a gas meter (A) at the site to minimize the gas consumption display section (1). By mounting the position indicator vehicle (2) so that it faces the peripheral surface, the movement of the minimum position indicator vehicle (2) can be monitored. A detection signal is generated when the position of the applied number or scale moves and an optical variation such as the relation of the light receiving level of each photocoupler of the pointer sensor (B) occurs, but the detection signal does not occur and the instruction vehicle is not generated. When (2) does not continue to rotate for a predetermined time or longer, it is determined that there is no gas leakage, and the display means (7) of the display unit (C), that is, the lamp is turned on and displayed.

Therefore, if this device is set in the gas meter (A) and the lamp of the display (C) is lit when collecting after a predetermined time (for example, 10 hours) or more, there is no gas leakage,
If the lamp is not turned on, it means that there is no time during which gas has not flowed even for only 5 minutes, which means that gas may leak.

<Effects> Since the present invention is configured as described above, it has the following effects.

Since it is possible to know the presence or absence of gas leakage by the movement of the indicator car on the gas consumption display of the gas meter, it is not necessary to enter the house during the inspection, and it is possible to inspect even if the occupant of the house to be inspected is absent. it can. Therefore, the gas leakage inspection is facilitated without the trouble of obtaining the consent of the inspection target household or having to adjust to the convenience of the inspection target household.

The device is set in the gas meter, and it is possible to know whether or not there is a gas leak by looking at the display on the display when collecting it later, so it is not necessary for a person to inspect the device all the time,
The efficiency of inspection work is greatly improved.

In addition, it has already been proposed and provided that the gas meter is integrally equipped with a gas leakage detection function, and if such a gas meter is used, there is no need to enter the house at the time of the gas leakage inspection, and Although it is possible to make it possible to inspect even when the family member is absent, the gas leakage inspection device of the present invention is configured separately from the gas meter, and carries it to the site where it is needed. By setting the pointer sensor on the gas meter at the site, the movement of the minimum indicator vehicle of the gas consumption display of the gas meter is monitored, and the presence or absence of gas leak is detected by the movement of the indicator vehicle and the necessary display is displayed. Since it is possible to use the existing gas meter as it is, it is possible to eliminate the need to enter the house at the time of the gas leakage inspection and to perform the inspection when the occupant of the inspected house is absent. . Therefore, it is not necessary to replace the existing gas meter with a new gas meter integrally equipped with a gas leakage inspection function for the above-mentioned purpose.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outline of the overall configuration of the gas leakage inspection apparatus of the present invention, FIG. 2 is an explanatory view schematically showing the state of the gas leakage inspection by the apparatus of the present invention, FIG. 3 is a functional block diagram, FIG. FIG. 4 is an explanatory view showing a state of a conventional gas leakage inspection. A: Gas meter, B: Pointer sensor C: Display, 1: Gas consumption display 2: Minimum indicator wheel, 3: Attachment means

Claims (1)

[Scope of utility model registration request] 1. A movement separate from the gas meter, which is provided separately from the gas meter and is installed outside the gas meter so as to face the circumferential surface of the gas indicator of the gas consumption display of the existing gas meter. A pointer sensor that optically detects the presence or absence and generates a detection signal, an attachment means that detachably attaches the pointer sensor to an existing gas meter, and a detection signal from the sensor that is connected to the pointer sensor Then
A gas leakage inspection device, comprising: a display device that displays a predetermined display when no input is input for a predetermined time or longer.