JPH08247819A - Cross-connecting unit for gas meter - Google Patents

Abstract

PURPOSE: To reverse the inlet and outlet ports of a gas pipe and a gas meter, and to simply, easily, surely and clearly fix the gas meter and the pipe line. CONSTITUTION: In a cross-connecting unit, inlet and outlet connecting parts 3, 4 to which a gas meter 1 is connected, and inflow and discharge pipe connecting part 5, 6 are laid on opposite sides. The cross-connecting unit 11 formed of a casting has a inlet passage 7 and a discharge passage 8 which are laid in parallel with each other within a horizontal plane, and the inflow and discharge pipe connecting parts 5, 6 are extended and projected in a horizontal direction, and the inlet and outlet connecting parts 3, 4 are extended downward. The inlet and outlet passages 7, 8 are curved along the peripheries of the outlet and inlet connecting parts 3, 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-connecting unit for connecting a gas meter by reversing the left and right of pipes.

[0002]

2. Description of the Related Art A connecting member for connecting a pipe to a gas meter has already been developed. For example, the following publication describes a connecting member for a gas meter. Japanese Patent Publication No. 3-50970 Japanese Utility Model No. 3-25139 Japanese Utility Model No. 62-170525 Japanese Utility Model No. 4-61025 Japanese Utility Model No. 4-124424 Japanese Utility Model No. 4-126125

The connecting units for gas meters described in these publications are provided with an inlet connecting part and an outlet connecting part for connecting the meter on the lower surface, and an exhaust pipe connecting part and an inflow pipe connecting part for connecting a gas pipe on the upper surface. Section is provided.

The inlet connection is connected to the meter inlet of the gas meter and the outlet connection is connected to the meter outlet of the gas meter. Also, the exhaust pipe connecting portion is connected to the gas exhaust pipe,
The inlet pipe connection is connected to the gas inlet pipe. The inlet connection portion communicates with the inflow pipe connection portion through the inflow passage, and the outlet connection portion communicates with the discharge pipe connection portion through the discharge passage.

Therefore, this connecting unit transfers the gas from the inflow pipe to the inflow pipe connection to the inflow passage to the inlet connection to the meter inlet to the gas meter to the meter outlet to the outlet connection.
The fluid flows along the path of the discharge path → discharge pipe connection → discharge pipe.

[0006]

As described above, when the gas meter is connected to the pipe through the connection unit, the connection unit can be used as a fixed base of the gas meter and can be securely fixed. It is important to install the gas meter so that it does not vibrate. This is because many gas meters incorporate a complicated electronic circuit such as a microcomputer, and also incorporate an emergency shutoff valve that detects vibration during an earthquake and closes the valve. To install the gas meter so that it will not vibrate, it is important to shorten the total length of the piping. In particular, if the flexible pipe that can be freely deformed is lengthened, the gas meter cannot be securely fixed. This is because long piping makes the gas meter in a state where it is easy to vibrate.

When the gas pipe and the outlet and the inlet of the gas meter are arranged on the same side, the conventional connection unit can connect the pipe in the shortest distance. However, it is not always possible to arrange the pipe and the outlet and inlet of the gas meter on the same side. For example, in the case of an apartment house, as shown in FIG. 1, gas meters 1 are provided on both sides of a gas pipe 2. In order to arrange the gas meter 1 as shown in this figure and make the pipe the shortest distance, conventionally, it is necessary to use a gas meter in which the outlet 1B and the inlet 1A are reversed for the right side and the left side. Therefore, the internal structure is the same,
It is necessary to manufacture two types of gas meters in which the outlet and the inlet are reversed. This adds to the variety of gas meters and substantially increases cost.

When a gas meter having the same outlet and inlet is arranged as shown in FIG. 1, the gas meter 1 on one side can be piped at the shortest distance, but the gas meter 1 on the other side can be installed.
, The outlet and the inlet are reversed, so as shown in Fig. 2,
Since it is necessary to connect the pipes 2 so as to cross each other, the total length of the pipes 2 becomes long, and the pipes cannot be neatly arranged.

The present inventor has developed the cross-connecting unit 11 shown in FIGS. 3 to 5 in order to solve this drawback. As shown in FIGS. 3 and 4, the cross connection unit 11 of this structure is connected between the pipe and the gas meter 1,
The left and right can be connected in reverse. Cross connection unit 1 of this structure
Reference numeral 1 has an inflow passage 7 and an exhaust passage 8 which are reversed left and right inside, and left and right are reversed upside down. Therefore, the pipe 2
Even if the outlet 1B and the inlet 1A of the gas meter 1 are used for the opposite purpose, they can be piped in the shortest distance without intersecting the pipes. When the left and right sides of the pipe 2 and the outlet 1B and the inlet 1A of the gas meter 1 cannot be reversed, the cross connection unit 11 is not used, or a connection unit in which the inflow path 7 and the exhaust path 8 do not intersect is used for the shortest time. Can be piped at a distance.

However, in the cross-connecting unit having this structure, it is necessary to use many joints such as the elbow 13 for connecting the pipes. For example, the cross connection unit of FIG. 4 is connected between the gas pipe 2 and the gas meter 1 using six elbows 13. The reason for using as many as six elbows is that the cross connection unit increases the distance between the gas pipe and the gas meter. A gas meter cannot be fixed freely anywhere. Depending on the installation location, there are restrictions on the positions of the gas meter and gas piping. If the cross-connecting unit is connected to a place where the gas meter and the gas pipe are close to each other, it is necessary to bend the gas pipe by using an elbow as shown in FIG.

The gas meter is obliged to be replaced with a new one after being used for a certain period of time. When replacing the gas meter, the meter inlet and outlet may be reversed. A gas meter having an inverted inlet and outlet can be conveniently connected by connecting a cross connection unit between the gas meter and the gas piping. However, the cross connection unit increases the distance between the gas meter and the gas pipe. Therefore, it is necessary to bend the gas pipe using many elbows as shown in FIG. If many joints such as elbows are used, not only the piping work is troublesome, but gas leaks from the joints are likely to occur, and moreover, there is a drawback that the piping cannot be neatly arranged. Further, the pipe becomes long, and it becomes difficult to securely fix the gas meter and the gas pipe.

The present invention has been developed for the purpose of solving this drawback, and an important object of the present invention is to simply and easily reverse the inlet and outlet of the gas pipe and the gas meter, and An object of the present invention is to provide a cross-connecting unit of a gas meter, which can surely and securely fix the gas meter and the gas pipe.

[0013]

The cross-connecting unit of the gas meter of the present invention has the following constitution in order to achieve the above-mentioned object. The cross connection unit 11 includes an outlet connection portion 4 connected to the meter outlet 1B of the gas meter 1,
It has an inlet connection part 3 connected to the meter inlet 1A, an inflow pipe connection part 5 to which a gas inflow pipe 2A is connected, and an exhaust pipe connection part 6 to which a gas exhaust pipe 2B is connected. The outlet connection portion 4 is communicated with the discharge pipe connection portion 6 via the discharge passage 8 provided inside. The inlet connecting portion 3 is communicated with the inflow pipe connecting portion 5 through an inflow passage 7 provided inside.
Further, the inflow passage 7 and the exhaust passage 8 are arranged in a state where the left and right sides are internally reversed, and the outlet connecting portion 4 and the inlet connecting portion 3 for connecting the gas meter 1 are connected to the gas inflow pipe 2A and the exhaust pipe. 2B and the inflow pipe connecting portion 5 and the discharge pipe connecting portion 6 which are connected to each other are arranged on opposite sides.

Further, the cross connection unit of the gas meter of the present invention is characterized by having the following unique construction. (A) The cross connection unit 11 is made of casting. (B) The inflow path 7 and the outflow path 8 are arranged in parallel in the same horizontal plane. (C) The inflow passage 7 has one end bent downward from the horizontal direction and communicates with the inlet connection portion 3, and the other end extends horizontally and communicates with the inflow pipe connection portion 5. (D) One end portion of the discharge passage 8 is bent downward from the horizontal direction to communicate with the outlet connection portion 4, and the other end portion is extended horizontally to communicate with the discharge pipe connection portion 6. (E) Inflow path 7 arranged on the same plane as discharge path 8
Are curved around the outlet connection 4 in the vicinity of the outlet connection 4. (F) A discharge passage 8 arranged on the same plane as the inflow passage 7.
Are curved along the periphery of the inlet connection 3 near the inlet connection 3.

[0015]

The function of the cross connecting unit of the gas meter of the present invention is as follows.
The gas inlet 1A and the gas outlet 1B are arranged on the same plane as an inflow passage 7 and an exhaust passage 8 which are opposite to each other. Further, an inflow pipe connecting portion 5 and an exhaust pipe connected to the inflow passage 7 and the exhaust passage 8 are arranged. The connection portion 6 is horizontally extended and opened, and the inlet connection portion 3 and the outlet connection portion 4 are opened downward. In the cross connection unit 11 of this structure, the inlet 1A and the outlet 1B of the gas meter 1 can be reversed with the left and right sides, and the gas pipe can be arranged close to the gas meter 1. It has the inflow passage 7 and the exhaust passage 8 on the same plane, the inflow pipe connecting portion 5 and the exhaust pipe connecting portion 6 project horizontally on both sides, and further, the inlet connecting portion 3 and the outlet connecting portion 4 are downward. This is because it is opened. For this reason,
By using the cross connection unit 11 of the present invention, the gas meter 1 can be easily and easily replaced with a different gas meter having different inlets 1A and outlets 1B with little or no change in the vertical position.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify a cross-connecting unit of a gas meter for embodying the technical idea of the present invention, and the cross-connecting unit of the present invention is
The types, types, materials, shapes, structures, and arrangements of components are not specified below.

Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as “claims”, “action”, and “action”. In the column of "Means for solving the problem". However, the members shown in the claims are
It is by no means specific to the members of the examples.

The cross-connecting unit of the gas meter shown in FIGS. 6 to 10 is manufactured by casting metal such as aluminum, copper, cast iron and gun metal. This cross connection unit 1
1 has a lower surface connected to a gas meter 11 and both ends connected to a gas pipe 2. FIG. 11 shows a flow path of gas of the cross connection unit 11 shown in this figure. In the cross connection unit 11 shown in these drawings, an outlet connection portion 4 connected to a meter outlet 1B of a gas meter 1, an inlet connection portion 3 connected to a meter inlet 1A, and a gas inflow pipe 2A are connected. It has an inflow pipe connecting portion 5 and an exhaust pipe connecting portion 6 to which a gas exhaust pipe 2B is connected.

The outlet connecting portion 4 has a discharge passage 8 provided therein.
Through the inlet pipe connecting portion 6 and the inlet connecting portion 3 communicates with the inlet pipe connecting portion 5 through the inflow passage 7 provided inside. Further, the inflow passage 7 and the exhaust passage 8 are arranged so that the inlet 1A and the outlet 1B of the gas meter 1 which are internally connected to each other are left and right reversed. That is, the outlet connection part 4 and the inlet connection part 3 for connecting the gas meter 1 are arranged on the opposite sides of the inflow pipe connection part 5 and the exhaust pipe connection part 6 for connecting the gas inflow pipe 2A and the exhaust pipe 2B. ing.

The inlet 1A and the outlet 1B of the gas meter 1 are provided with an inflow path 7 and an exhaust path 8 which are opposite to each other and are arranged in parallel in the same horizontal plane. The inflow passage 7 is bent downward at the right end portion in the drawing from the horizontal direction, and the inlet connection portion 3 is formed.
The left end portion is extended in the horizontal direction and communicates with the inflow pipe connecting portion 5. Further, in the discharge path 8, the left end portion in the drawing is bent downward from the horizontal direction, and the outlet connection portion 4 is formed.
The right end portion is horizontally extended to communicate with the discharge pipe connecting portion 6.

Further, the inflow passage 7 disposed on the same plane as the discharge passage 8 is curved along the periphery of the outlet connection portion 4 in the vicinity of the outlet connection portion 4 and is flush with the inflow passage 7. The discharge passage 8 arranged is curved along the periphery of the inlet connection portion 3 in the vicinity of the inlet connection portion 3.

An inspection port 14 that communicates with the discharge passage 8 and inspects for gas leakage is opened. The inspection port 14 has a cylindrical shape to which a gas hose can be detachably connected and is provided so as to project in the horizontal direction. The inspection port 14 is hermetically closed when not in use. In order to close the inspection port 14, a female screw 10 is provided on the inner surface, and a plug 15 is screwed into the female screw 10. The plug 15 has an O-ring 16 sandwiched between the inspection port 1
4 is closed airtightly. When performing a gas leak inspection, the plug 15 is removed and a hose is connected to the inspection port 14. The hose is connected to the tester and is checked for gas leaks.

The inflow pipe connecting portion 5 and the exhaust pipe connecting portion 6 of the cross connecting unit 11 are connected to the inflow pipe 2A and the exhaust pipe 2B, which are gas pipes, through the socket 18. The inflow pipe connecting portion 5 is connected to the inflow pipe 2A via the opening / closing valve 17.

The inlet connecting portion 3 and the outlet connecting portion 4 of the cross connecting unit 11 are connected to the gas meter 1 and the gas pipe via the nipple 9 and the tightening ring 12. Female screws 10 are provided on the inner surfaces of the openings of the inlet connection portion 3 and the outlet connection portion 4 for screwing in the nipple 9. The male screw of the nipple 9 is screwed into the female screw 10, and the gas meter 1 is inserted through the nipple 9.
Connect to 1.

Inlet connection part 3 connected to the gas meter 1
The space between the outlet connection part 4 and the outlet connection part 4 is designed so that the outlet 1B and the inlet 1A of the gas meter 1 can be connected via the nipple 9. The gas meter 1 is designed so that the center distance between the inlet 1A and the outlet 1B is 90 mm or 130 mm. Therefore, in the cross connection unit 11 shown in FIG. 6, the center distance between the outlet connection portion 4 and the inlet connection portion 3 provided on the lower surface is 90 m.
Designed to be m or 130 mm.

The cross connection unit 11 has an internal discharge path 8
And the left and right of the inlet 1A and the outlet 1B connected to the gas meter 1 in the inflow passage 7 are reversed. Therefore, the cross connection unit 1
The gas flowing into the gas meter 1 from the right end is discharged from the left part of the lower surface and flows into the gas meter 1. Also, gas meter 1
The gas discharged from the exhaust pipe is discharged from the right part of the lower surface to the left end of the upper surface, and flows out to the exhaust pipe 2B.

[0027]

INDUSTRIAL APPLICABILITY The cross-connecting unit of the present invention has a feature that the gas pipe and the inlet and the outlet of the gas meter can be reversed to easily and easily fix the gas meter and the gas pipe securely and neatly. That is, the cross-connecting unit of the present invention arranges an inflow passage and an exhaust passage that reverse the left and right of the gas inlet and outlet on the same plane, and an inflow passage arranged on the same plane as the discharge passage. The discharge passage, which is curved in the vicinity of the outlet connection portion along the periphery of the outlet connection portion and is arranged in the same plane as the inflow passage, is curved along the periphery of the inlet connection portion in the vicinity of the inlet connection portion, and This is because the inflow pipe connecting portion and the exhaust pipe connecting portion connected to the inflow passage and the discharge passage are extended in the horizontal direction, and the inlet connecting portion and the outlet connecting portion are opened downward. In the cross connection unit of this structure, the inlet and outlet of the gas meter can be reversed, and the gas pipe can be arranged close to the gas meter. Therefore, it is possible to easily and easily replace the gas meter with a different gas meter with different inlets and outlets, without changing the vertical position of the gas meter.

[Brief description of drawings]

FIG. 1 is a schematic front view illustrating a connection state of a conventional gas meter.

FIG. 2 is a schematic front view showing a conventional piping state in which the connection positions of the piping and the gas meter are reversed left and right.

FIG. 3 is a schematic front view showing a state in which left and right gas meters are connected using the cross connection unit previously developed by the present inventor.

FIG. 4 is a front view showing an example of a usage state of the cross connection unit shown in FIG.

5 is a plan view of the cross connection unit shown in FIG.

FIG. 6 is a bottom view showing an example of the cross connection unit according to the embodiment of the present invention.

7 is an end view of the cross-connecting unit shown in FIG. 6 taken along the line AA.

FIG. 8 is a cross-sectional view taken along line BB of the cross connection unit shown in FIG.

9 is a cross-sectional view taken along line CC of the cross connection unit shown in FIG.

FIG. 10 is a front view showing an example of a usage state of the cross connection unit shown in FIG.

11 is a schematic perspective view showing inflow passages and discharge passages of the cross connection unit shown in FIG.

[Explanation of symbols]

1 ... Gas meter 1A ... Inlet 1B ... Outlet 2 ... Piping 2A ... Inflow pipe 2B ... Exhaust pipe 3 ... Inlet connection part 4 ... Outlet connection part 5 ... Inflow pipe connection part 6 ... Exhaust pipe connection part 7 ... Inflow path 8 ... Exhaust path 9 ... Nipple 10 ... Female screw 11 ... Cross connection unit 12 ... Tightening ring 13 ... Elbow 14 ... Inspection port 15 ... Plug 16 ... O-ring 17 ... Open / close valve 18 ... Socket

Claims (1)

[Claims] An outlet connection (4) connected to a meter outlet (1B) of a gas meter (1), an inlet connection (3) connected to a meter inlet (1A), and a gas inflow pipe (2A). ) Is connected, and a discharge pipe connection (6) to which a gas discharge pipe (2B) is connected, and an outlet connection (4) is provided inside the discharge pipe. Through a channel (8) to a discharge pipe connection (6),
The inlet connection part (3) communicates with the inflow pipe connection part (5) through the inflow passage (7) provided inside, and further, the inflow passage (7) and the discharge passage (8) are internally formed. The left and right are arranged so that the outlet connection (4) and the inlet connection (3) that connect the gas meter (1) are connected to the gas inflow pipe (2A) and the exhaust pipe (2B). In the cross connection unit (11) arranged on the opposite side to the inflow pipe connection part (5) and the discharge pipe connection part (6) to be connected, the crossing of the gas meter is characterized by having all the following configurations. Connection unit. (A) The cross connection unit (11) is made of casting. (B) The inflow path (7) and the outflow path (8) are arranged in parallel in the same horizontal plane. (C) The inflow path (7) has one end bent downward from the horizontal direction to communicate with the inlet connection part (3), and the other end extends horizontally to the inflow pipe connection part (5). Is in communication with. (D) The discharge path (8) has one end bent downward from the horizontal direction to communicate with the outlet connection part (4), and the other end extends horizontally to the discharge pipe connection part (6). Is in communication with. (E) Inflow passage arranged in the same plane as the discharge passage (8)
The (7) is curved along the circumference of the outlet connection (4) in the vicinity of the outlet connection (4). (F) Discharge path arranged on the same plane as the inflow path (7)
The (8) is curved along the periphery of the inlet connection (3) in the vicinity of the inlet connection (3).