JPH09280445A - Gas meter connecting coupling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability of a gas meter connecting piping and reduce a gas meter installation space by fixing a secondary side relay coupling having a horizontal part for mounting to supporting plate having a horizontal part for mounting from a vertical direction, and connecting a gas supply side piping and a gas consumption installation side piping to each other by a flexible pipe. SOLUTION: A horizontal part for mounting 22 for attaching a primary side relay coupling 30 and a secondary side relay coupling 40 on a supporting plate 20 fixed to a building, is arranged in this gas meter connecting coupling, and a gas supply side piping connecting opening 33 and the inlet side connecting opening 34 of a gas meter 10 are formed in the coupling main body 31 of the primary side relay coupling 30. While, a gas consumpter side piping connecting opening 43 and the delivery pipe side connecting opening 44 of the gas meter 10 are formed in the main body 41 of the secondary side relay coupling 40. Horizontal parts for mounting 32, 42 are respectively arranged to the primary side relay coupling 30 and the secondary side relay coupling 40 so that the primary side relay coupling 30 and the secondary side relay coupling 40 are attached to the supporting plate 20 from an upper direction with easy work, and the horizontal mounting parts 32, 42 are overlapped on the horizontal mounting part 22, and threadedly fixed thereto from a vertical direction by machine screws and the like, for example, hexagon socket head cap screws.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for connecting a gas meter when piping city gas from a pipe of a supply source to a building of a supply destination.

[0002]

2. Description of the Related Art Various methods are used for piping around a gas meter, one example of which is shown in FIGS. In this conventional example, a gas supply side pipe 1 raised from an embedded pipe of a supply source and a gas consumption facility side pipe 2 which is piped down to a gas consumption facility inside a building of a destination are connected to an outer wall 3 of a building or a buried portion. It is fixed to the reinforcing block 4 by the support metal fitting 5, and the main valve 6 is piped in the middle of the gas supply side pipe 1, and the primary side (gas supply side) pipe 1 and the secondary side (gas consumption facility side) pipe A male / female elbow joint 7, an elbow joint 8, a universal joint 9 and the like are combined on the upper part of 2, and the inlet side connection port 11 and the outlet side connection port above the gas meter 10 are connected in front of the gas supply side pipe 1 and the gas consumption facility side pipe 2. It connects with 12, and suspends and fixes the gas meter 10.

[0003]

SUMMARY OF THE INVENTION The gas meter 10 described above.
In the surrounding pipe, the gas meter 10 is supported by the gas supply side pipe 1 and the gas consumption facility side pipe 2, and there are many connecting parts until the gas meter 10 is connected, so many joints are required, and the core is neat in appearance. Skilled technology was required to take out and pipe. Further, the protrusion length L from the building outdoor wall 3 to the front surface of the gas meter 10 and the length M between the left and right gas supply side pipes 1 and gas consumption facility side pipes 2 also have many connecting portions and the main valve 6 is piped. Because of the large size, it required a lot of installation space as a whole. Especially in the case of general housing,
In many cases, there is not much room in the installation space width M or protrusion length L, which narrows the living space and makes piping work difficult. In view of the above problems, the present invention improves the workability and aesthetics of the gas meter connection pipe, reduces the gas meter installation space, increases the fixing strength of the gas meter, does not damage or leak from the connection portion, and is for highly safe gas meter connection. A joint is provided.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a gas supply side pipe connection port, a primary side relay joint having a connection port connected to an inlet side connection port of a gas meter and a mounting horizontal portion, and an outlet of the gas meter. A secondary side relay joint that has a connection port that connects to the pipe side connection port and multiple gas consumption facility side pipe connection ports and that has a horizontal mounting portion is fixed from above and below to a support plate that has a horizontal mounting portion, and the gas supply side The gas meter connecting joint is characterized in that the pipe and the gas consuming facility side pipe are connected by a flexible pipe. Further, it may be a gas meter connecting joint that integrates the primary side relay joint and the secondary side relay joint. Further, it is a joint for gas meter connection in which a main valve is provided between the gas supply side pipe connection port of the primary side relay joint and the inlet pipe side connection port of the gas meter. Further, a gas meter connection joint may be provided in which the main valve is provided inside the primary side relay joint. Further, the main valve may be a joint for gas meter connection, in which the valve body is sealed with a refractory gasket and a rotation restriction stopper mechanism is provided in the handle portion.

[0005]

Since the present invention has the above-mentioned structure, the joint body for gas meter connection is provided at the upper end of the source primary side pipe (gas supply side pipe) and the destination secondary side pipe (gas consumption facility side pipe). It is directly fixed to a building such as the outer wall of the building through a support plate. For this reason, it is not necessary to use steel pipes for the rising and falling pipes on the primary side and the secondary side as in the conventional case, and flexible stainless steel flexible pipes or the like having flexible flexibility for easy piping can be used. . Therefore, the workability of the pipe is significantly improved. Further, since the gas meter is directly connected to the fitting body for connecting the gas meter, the mounting strength of the gas meter is increased. Further, it is not necessary to fix the conventional start-up / fall-down pipe to the building halfway through the use of support fittings. Furthermore, the relay joint mounting hole pitch size of the support plate is provided at a size interval according to the shape of the gas meter, and the gas meter can be mounted, so there is less front and rear depth space and left and right width space than before. As a whole, the space for mounting the gas meter is greatly reduced.

Further, since the gas meter can be directly connected, it is not necessary to use many conventional elbows and universal joints for centering and piping, and the joint for gas meter connection can be fixed to the support plate from above with screws or the like. Therefore, the workability of piping and installation is greatly improved. Also, beautiful piping can be done without requiring skill. Furthermore, since a main valve that opens and closes is installed between the gas supply side pipe connection port of the primary side relay joint and the gas meter inlet side pipe connection port, the gas supply side pipe is directly connected to the connection port of the primary side relay joint. It is possible and can be neatly piped in appearance. Furthermore, since it is not necessary to attach a main valve such as a cock to a part of the gas supply side piping that is started up and piped,
When a worker performs piping work, there is no problem of an increase in the number of connecting parts caused by attaching the main valve and a problem of sealing property (increased possibility of leakage). Furthermore, the main valve provided inside the primary side relay joint body can be opened and closed by operating the handle provided outside the joint body, so it has good operability, has a handle rotation restriction mechanism, and has a fire-resistant seal packing with the valve body. Since it has good operability, it can open and close the valve with good operability and safety.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 are a front view, a left side view, a right side view and a plan view of a gas meter connecting joint according to a first embodiment of the present invention. 1 to 4, the support plate 20 is provided with an appropriate number of mounting screw holes 21 for fixing to the building. The support plate is directly fixed to the building by screwing in the screws using the mounting screw holes. Further, the support plate 20 is provided with a mounting horizontal portion 22 for mounting the primary-side relay joint 30 and the secondary-side relay joint 40, which will be described later, while the two relay joints are also provided with mounting horizontal portions, respectively. The mounting horizontal portions are overlapped with each other and screwed in from above and below with a screw or the like, for example, a hexagon socket head cap screw.

Reference numeral 30 is a primary side relay joint, 31 is a joint body,
32 is a horizontal mounting portion, 33 is a gas supply side pipe connection port, 34
Is a connection port (gas meter side connection port) connected to the inlet side connection port 11 of the gas meter 10. A gas supply side pipe 1 made of a flexible stainless steel pipe or the like having flexibility in a connection port 33 opened at a lower rear portion of the primary side relay joint 30.
Plumbing. On the other hand, since the connection port 34 opened at the lower front portion of the primary-side relay joint 30 is connected to the inlet-side connection port 11 of the gas meter 10, the union nut 35 is used as in the conventional case.
Attach. Further, a main valve, for example, a ball valve 300 that opens and closes between the gas supply side pipe connection port 33 and the connection port 34 connected to the inlet side connection port 11 of the gas meter 10 is provided inside and inside the primary side relay joint 30. At this time, the joint main body 31 having the elbow portion is integrally made of cast metal, has a communication passage in the joint main body, and the ball valve body 301 and the handle 302 are attached thereto. The ball valve 300 is used by opening and closing when installing or repairing a gas appliance connected to the tip of the gas consuming equipment side pipe.

FIG. 5 is an enlarged sectional view of the valve portion showing the ball valve 300 of the embodiment of the present invention. A ball valve body 301 is mounted in the joint body 31, and is sealed with a fluororesin sheet gasket 303 and a fireproof gasket 304 containing expanded black smoke. Since the fireproof gasket 304 expands when heated, the sealability with the valve body 301 is maintained even in the event of a fire. The valve body 301 includes a valve rod 305 mounted in the main body 31 and a handle 302 provided in front of the joint main body 31.
The valve is opened and closed by rotating the valve.

Reference numeral 306 is a rotation restricting stopper of the handle 302, and a restricting end portion 307 at one end is fitted into a stop hole 308 provided at a 90 degree opening / closing position of the joint body to push up the pushing portion 30.
Reference numeral 9 projects into the inner groove of the handle 302. The central portion has a hole 310 into which the valve rod 305 is inserted, and the other end is provided with a fulcrum protrusion 311 of a stopper that abuts the surface of the joint body 31. The stopper 306 is constantly pressed against the joint body 31 side by the spring 312. The push-up portion 30 protruding into the handle inner groove of the stopper 306
By pushing 9 by hand, the regulating end 307 is disengaged from the stop hole 308 and the handle 302 can be rotated with the fulcrum protrusion 311 as a base point. Next, the lifting portion 30
Release 9 and rotate the handle to rotate 90 degrees.
The restricting end 307 is fitted into a stop hole (not shown) provided in the 90 degree direction of each joint body, and the 90 degree rotation of the handle is stopped to accurately position the handle.

As described above, the main valve provided in the joint body 31 has good operability because the handle 302 can be operated from the outside of the joint body. Further, since the fire resistant gasket 304 containing expanded black smoke is used as the seal with the ball valve element 301, the seal safety at the time of fire is excellent. In addition, since a rotation restriction stopper mechanism is provided on the handle part, reliable opening and closing operations can be performed,
In addition, it is possible to prevent careless rotation of the handle, which is excellent in safety.

Next, 40 is a secondary side relay joint, 41 is a joint body, 42 is a horizontal mounting portion, 43 is a gas consumption facility side pipe connection port, and 44 is a connection port connected to the outlet side connection port 12 of the gas meter 10. Is. When there are a plurality of gas consumption facilities, a plurality of them are formed in the radial direction of the secondary side relay joint 40, for example, a flexible stainless steel pipe or the like having flexibility at the connection ports 43 opened at three places, an upper part, a lower part and a right part. The gas consuming facility side pipe 70 is connected. Alternatively, one of the connection ports 43, for example, the connection port 43 at the upper part of the secondary side relay joint 40 may be used as an inspection hole, and the plug 46 may be closed after the inspection is completed. On the other hand, an elbow portion extends to the lower front portion of the secondary side relay joint 40, and a connection port 44 is opened at the tip thereof, and the connection port 44 further has a connection port 12 of the outlet side of the gas meter 10.
Union nut 45 with the same structure as before.
Is attached. At this time, the joint body 41 is integrally manufactured by casting including the elbow portion.

Primary side relay joint 30 and secondary side relay joint 40
In order to easily attach the to the support plate 20 from above, the support plate 20 is provided with mounting horizontal portions 22, while the two relay joints are also provided with mounting horizontal portions 32 and 42, respectively. Overlap and screw in from the top and bottom with a screw or the like, for example, a hexagon socket head cap screw to fix. An elongated hole 23 is provided in the horizontal mounting portion 22 of the support plate 20 in order to facilitate the alignment of the gas meter in the front-rear direction. The support plate 20 is fixed to the building, and after connecting the gas meter 10 with the union nuts 35 and 45, the gas supply side pipe 1 and each gas consumption facility side pipe 2 are connected.

6 to 9 are a front view, a left side view, a right side view and a plan view of a gas meter connecting joint according to a second embodiment of the present invention. In this embodiment, in FIGS. 6 to 9, the primary side relay joint 30 and the secondary side relay joint 40 are integrally manufactured by casting, for example. The integrated connecting bar 50 is formed by connecting the mounting horizontal portions of the relay joints according to the first embodiment, and is a horizontal plane for mounting to the support plate 20, and the mounting horizontal portion 22 of the support plate 20. The connecting bar 50 is placed on the upper side, and tightened and fixed from above and below with screws or the like, for example, hexagon socket head bolts and nuts. Further, in this embodiment, the gas supply side pipe 1 made of a flexible stainless steel pipe or the like having flexibility is connected to the connection port 33 opened at the bottom of the primary side relay joint 30. On the other hand, a main valve, for example, an angle type ball valve 300 is provided in front of the primary side relay joint 30.
And a connection port 34 is opened in the lower portion of the angle type ball valve 300, and a union nut 35 having the same structure as the conventional one is attached to the connection port 34. The union nut 35 is connected to the inlet side of the gas meter 10. It is connected to the connection port 11.

Next, this embodiment is similar to the first embodiment,
40 is a secondary side relay joint, 41 is a joint body, 43 is a gas consumption facility side pipe connection port, and 44 is a connection port connected to the outlet side connection port 12 of the gas meter 10. When there are a plurality of gas consuming facilities, a plurality of connection ports 4 are opened in the radial direction of the secondary side relay joint 40, for example, three places of the upper part, the lower part and the right part.
The gas consuming equipment side pipe 2 made of a flexible stainless steel pipe or the like having flexibility is connected to the pipe 3. Alternatively, one of the connection ports 43, for example, the connection port 43 in the upper part of the secondary side relay joint 40 is used as an inspection hole, and the plug 4 is used after the inspection is completed.
It may be closed at 6. On the other hand, an elbow 47 is screwed on the front side of the secondary side relay joint 40 with a taper screw, a connection port 44 is opened at the tip of the elbow 47, and the connection nut 44 has a union nut 45 of the same structure as the conventional one. Is attached and connected to the outlet side connection port 12 of the gas meter 10.

[0016]

As described above, since the gas meter connecting joint of the present invention can be fixed to the building outdoor wall through the support plate, the gas meter 10 can be stably supported and fixed. Also,
Since the gas meter is stably fixed by fixing the joint to the outdoor wall of the building, as the primary side startup (gas supply side) piping 1 and the secondary side shutdown (gas consumption facility side) piping 2,
A flexible tube made of stainless steel that is flexible and has excellent workability can be used. Further, since the gas meter 10 is stably fixed, the connecting portion of the gas meter 10 is not loosened by vibration or the like, and can be safely attached.
In addition, the primary side relay joint and the secondary side relay joint can be attached to the support plate with screws, etc. from the upper direction, and the main valve that was in the middle of the gas supply side pipe can be connected to the gas supply side pipe connection port of the primary side relay joint. Since it is provided between the gas meter and the inlet side connection port of the gas meter, the connecting portion of the pipe can be reduced and the main valve 6 can be operated from the front, so that the workability of the gas meter connecting pipe is good and the appearance is excellent, The operability of the original valve is also good. Further, the gas meter 10 is fixed close to the outer wall of the building, the front and rear projection amount is small, and the left and right pipe width dimensions are always piped with a constant short width. As a whole, the installation space of the gas meter pipe is greatly reduced, Living space increases.

As described above, the joint for gas meter connection of the present invention improves the pipe workability of gas meter installation, installation strength and aesthetics after installation, greatly reduces installation space, increases living space, and improves valve operation safety. The sex is also good. In addition, the safety with respect to sealing property and fire resistance is increased, and it has an industrially excellent effect that can cope with an unexpected situation.

[Brief description of drawings]

FIG. 1 is a front view of a gas meter connecting joint showing a first embodiment of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a right side view of FIG. 1;

4 is a plan view of FIG. 1. FIG.

5 is a side enlarged sectional view showing the structure of the ball valve 300. FIG.

FIG. 6 is a front view of a gas meter connecting joint showing a second embodiment of the present invention.

FIG. 7 is a left side view of FIG.

FIG. 8 is a right side view of FIG.

FIG. 9 is a plan view of FIG.

FIG. 10 is a front view of a state in which the gas meter is connected to a conventional gas meter.

FIG. 11 is a side view showing a state in which the gas meter is connected to a conventional gas meter.

[Explanation of symbols]

1 Gas supply side piping 2 Gas consuming equipment side piping 3 Building outer wall 4 Reinforcement block 5 Support metal fittings 6 Main valve 7 Male and female elbow joint 8 Elbow joint 9 Universal joint 10 Gas meter 11 Inlet side connecting port 12 Outlet side connecting port 20 Support plate 21 screw hole 30 primary side relay joint 40 secondary side relay joint 31, 41 joint body 32, 42 mounting horizontal part 33 gas supply side pipe connection port 34 connection port to connect to inlet side connection port of gas meter 35, 45 union nut 43 Gas consuming equipment side pipe connection port 44 Connection port for connecting the outlet side of the gas meter 46 Plug connection 47 Elbow 50 Connection bar 300 Ball valve 301 Ball valve body 302 Handle 303 Fluororesin sheet gasket 304 Fireproof gasket 305 Valve rod 306 Rotation Restriction stopper 307 Restriction end 308 Stop hole 30 Push-up portion 310 hole 311 fulcrum projection 312 spring

Claims (5)

[Claims] 1. A gas supply side pipe connection port, a connection port connected to an inlet side connection port of a gas meter and a primary side relay joint having a mounting horizontal portion, and a connection port connected to an outlet side connection port of the gas meter. Equipped with multiple gas consumption facility side pipe connection ports,
A gas meter connection characterized in that a secondary side relay joint having a mounting horizontal portion is fixed from above and below to a support plate having a mounting horizontal portion, and a gas supply side pipe and a gas consuming facility side pipe are connected by a flexible pipe. For fittings. 2. The joint for gas meter connection according to claim 1, wherein the primary side relay joint and the secondary side relay joint are integrated. 3. The joint for gas meter connection according to claim 1, wherein a main valve is provided between a gas supply side pipe connection port of the primary side relay joint and an inlet pipe side connection port of the gas meter. . 4. The gas meter connecting joint according to claim 3, wherein the main valve is provided inside the primary side relay joint. 5. The gas meter connecting joint according to claim 3, wherein the main valve is sealed with a valve body by a fireproof gasket, and a handle portion is provided with a rotation restricting stopper mechanism.