JPH09317977A - Gas meter connecting joint device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably fix a gas meter by providing a supporting plate which fixes a primary side intermediate joint and a secondary side intermediate joint and a connection lead to a flexible pipe having electric insulativity, and thereby fixing the joints to an outer wall of a building. SOLUTION: A supporting plate is directly fixed to a building by screwing a bis into an installation bis hole. The supporting plate 20 is provided with a side surface fixation part 22 for fixing an electric insulating primariy side intermediate joint 30 arranged inbetween a side surface in an axially vertical direction and a secondary side intermediate joint 40. The joints 30, 40 are provided with side surface fixation parts 32, 42. The side surface fixation parts are superposed on each other and fixed to each other by screwing a bis or the like, for instance, a bolt with a hexagon hole. It is thus possible to use stainless steel flexible pipe which is easily bended and arranged as the primary and secondary side descending pipes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling device 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 gas supply side pipe 1 and a gas consumption facility side pipe 2 by combining a male and female elbow joint 7, an elbow joint 8, a universal joint 9 and the like on the upper part of 2.
The gas meter 10 is connected to the inlet side connection port 11 and the outlet side connection port 12 on the upper side of the gas meter 10 on the front side of, and the gas meter 10 is suspended and fixed.

[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. Further, in order to prevent corrosion due to stray current in the gas pipe, it is effective to use an electrically insulating pipe joint as a part of the pipe. For this reason, various inventions and inventions have been made regarding this kind of pipe joint, but in each case, a pipe having a unique structure, a complicated pipe joint, or a pipe joint of this kind is separately provided in the middle of the gas pipe. There were many disadvantages in terms of performance, work, and cost, such as the need for construction. The present invention, in view of the above problems,
Gas meter connection piping with improved workability and aesthetics, reduced gas meter installation space, increased gas meter fixing strength, no damage or leakage from the connection part, corrosion due to stray current, and high safety for gas meter connection Is provided.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a primary side relay joint having a gas supply side pipe connection port, a connection port connected to an inlet side connection port of a gas meter, and a fixed portion, and an outlet pipe of the gas meter. From a secondary side relay joint having a connection port connected to the side connection port, a plurality of gas consumption facility side pipe connection ports, and a fixing portion, and a support plate fixing the primary side relay joint and the secondary side relay joint. The gas supply side pipe connection port is connected to a flexible pipe through a main plug having an electrically insulating means, and the gas consumption facility side pipe connection port is connected to the flexible pipe. It is a device. Further, a male screw / female screw or a female screw / male screw is provided at the gas supply side pipe connection port of the primary side relay joint and the connection port of the main plug that is connected to this gas supply side pipe connection port, and as an electrical insulating means, An electrical insulating layer coated on the surface of at least one of a male screw and a female screw, an adhesive layer for adhering a screw screwed to the screw coated with this electrical insulating layer, and a primary side relay joint having a female screw or A side end surface of the main plug and a main plug having a male screw or a male screw of the primary side relay joint, and subsequently an annular ring of an electrically insulating material sandwiched between the side face in the direction orthogonal to the axis on the inner side in the axial direction You may

[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, an electrical insulation layer coated on the surface of either the male or female screw of the primary side relay joint or the main plug, and the side end surface of the primary side relay joint or the main plug having the female thread and the side face of the main plug or the primary side relay joint having the male screw. An annular ring of electrically insulating material is sandwiched between and sealed with an adhesive to provide electrical insulation.

[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 an 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 side surface fixing portion 22 for attaching 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 side surface fixing portions, respectively. The side surface fixing portions are overlapped with each other and screwed and fixed from the lateral direction with screws or the like, for example, hexagon socket head cap screws. In addition,
In the present embodiment, the lateral fixing method by the side surface fixing portion has been described, but the fixing method is not limited to this fixing method, and is fixed to the support plate from the vertical direction by the horizontal surface fixing portion provided in the two relay joints ( It is needless to say that a back-and-forth fixing method (not shown) by a back fixing portion may be performed.

Reference numeral 30 is a primary side relay joint, 31 is a joint body,
32 is a side fixing part, 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. At the gas supply side pipe connection port 33 opened at the lower rear of the primary side relay joint 30, the main plug 6
Is used to open and close the main plug 6 when installing or repairing a gas appliance. On the other hand, in order to connect to the inlet side connection port 11 of the gas meter 10, the union nut 35 is attached to the connection port 34 opened at the lower front part of the primary side relay joint 30 as in the conventional case. Furthermore, one end of the main plug 6 has a male screw 6a that is screwed into the female screw 30a of the primary side relay joint 30.
And, subsequently to this, the side surface 6 in the direction perpendicular to the axis on the inner side in the axial direction.
b, and the other end is provided with a one-touch type flexible pipe connection structure for connecting to the gas supply side pipe 1 made of a flexible stainless steel flexible pipe or the like.

FIG. 5 is an enlarged cross-sectional view of the insulating screw connection portion of the male screw 6a of the main plug 6 and the female screw 30a of the primary side relay joint 30. The male screw 6 a of the main plug 6 is provided with an electric insulating layer 100 formed by resin coating in which an epoxy resin is electrostatically powder coated and baked. An annular ring 104 made of an electrically insulating material is attached to the side surface 6b of the master plug 6 provided with the electrical insulating layer 100 formed by this coating.
For example, an epoxy resin adhesive is applied to the male screw 6b of the above to form the adhesive layer 102, and the female screw 3 of the primary side relay joint 30 is formed.
0a is screwed to connect the primary side relay joint 30 and the main plug 6 in an electrically insulated state.

When the main plug 6 is screwed, the annular ring 104 made of an electrically insulating material is sandwiched between the side end surface 30b of the primary-side relay joint 30 and the side surface 6b of the main plug 6, and is attached to the annular ring 104 side. By the adhesive that protruded,
The primary side relay joint 30, the annular ring 104, and the main plug 6 are integrally sealed and fixed. For this reason, the primary side relay joint 30 and the main plug 6 are coupled in an insulated state, and the annular ring 104
Since the insulating screw joint between the primary side relay joint 30 and the main plug 6 is cut off from the external environment due to the sandwiching, corrosive water or the like does not enter the insulating screw joint from the outside, and long-term insulation performance is maintained. .

In this embodiment, the case where the gas supply side pipe connection port 33 of the primary side relay joint 30 is the female screw 30a and the main plug 6 has the male screw 6a screwed to the female screw 30a has been described. On the contrary, the primary side relay joint 30
Needless to say, the gas supply side pipe connection port 33 of the above may have a male screw, and the main plug 6 may have a female screw to be screwed to the male screw. It may be a screw, a trapezoidal screw, a triangular screw, a square screw, or a round screw, and the shape is not limited as long as it has a screw structure.

Next, 40 is a secondary side relay joint, 41 is a joint body, 42 is a side fixing 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 consumption facility side pipe 2 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 side plates to the support plate 20 from the lateral direction, the support plate 20 is provided with the side surface fixing portions 22, while the two relay joints are respectively provided with the side surface fixing portions 3 as described above.
2, 42 are provided, and the fixing portions are overlapped with each other and screwed and fixed from the lateral direction with a screw or the like, for example, a hexagon socket head cap screw. An elongated hole 23 is provided in the fixing portion 22 of the support plate 20 in order to facilitate 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.

[0014]

As described above, since the coupling device for connecting a gas meter 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. Moreover, since the gas meter is stably fixed by fixing the joint to the outdoor wall of the building, the startup (gas supply side) pipe 1 on the primary side
A flexible pipe made of stainless steel, which is flexible and has excellent workability, can be used as the plumbing 2 on the secondary side (gas consumption facility side). Gas meter 10
Is stably fixed, so that the connecting portion of the gas meter 10 is not loosened due to 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 from the lateral 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 the number of connecting parts of the pipe is reduced by providing the above, the workability of the gas meter connecting pipe is good and the appearance is excellent. 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. Further, since the insulating screw-bonded portion is shielded from the external moisture environment by the sandwiching of the annular ring, corrosive water or the like does not enter the insulating screw-bonded portion from the outside, and the long-term insulating performance is maintained. INDUSTRIAL APPLICABILITY As described above, the joint device for connecting a gas meter of the present invention improves the piping workability of the gas meter installation, the mounting strength, and the aesthetic appearance after the installation, and the installation space is greatly reduced and the living space is increased. Further, the electrical insulating property is maintained, corrosion is prevented, the safety is increased, and even in an unexpected situation, it has an excellent industrial effect.

[Brief description of drawings]

FIG. 1 is a front view of a coupling device for gas meter connection showing an 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.

FIG. 5 is an enlarged cross-sectional view of an insulating screw joint portion of the male screw of the main plug and the female screw of the primary side relay joint of FIG.

FIG. 6 is a front view showing a state in which the gas meter is connected to a conventional gas meter.

FIG. 7 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 consumption equipment side piping 3 ... Building outer wall, 4 ... Reinforcing block 5 ... Supporting metal fittings, 6 ... Main valve 6a ... Male screw, 6b ... Side surface 7 ... Female and elbow fittings, 8 ... Elbow fittings 9 ... Universal joint, 10 ... Gas meter 11 ... Inlet side connection port, 12 ... Outlet side connection port 20 ... Support plate, 21 ... Screw hole 22 ... Side fixing part, 23 ... Oblong hole 30 ... Primary side relay joint, 30a ... Female screw 30b ... Side end face, 40 ... Secondary side relay joint 31, 41 ... Joint body, 32, 42 ... Side fixing part 33 ... Gas supply side pipe connection port, 34 ... Connection port connected to inlet side connection port of gas meter 35 , 45 ... Union nut, 43 ... Gas consuming facility side pipe connection port 44 ... Gas meter outlet pipe side connection, 46 ... Connection port connected to plug connection port 100 ... Electrical insulating layer, 102 ... Adhesive layer 104 ... annular ring

Claims (2)

[Claims] 1. A primary side relay joint having a gas supply side pipe connection port, a connection port connected to an inlet pipe side connection port of a gas meter, and a fixed portion, and a connection port connected to an outlet pipe side connection port of the gas meter. Of the gas consuming equipment side pipe connection port and a secondary side relay joint having a fixed part, consisting of a support plate for fixing the primary side relay joint and the secondary side relay joint, the gas supply side pipe connection port A coupling device for connecting a gas meter, which is connected to a flexible pipe through a main plug having an electrically insulating means, and the gas consumption facility side pipe connection port is connected to the flexible pipe. 2. A male screw / female screw or a female screw / male screw is provided in the gas supply side pipe connection port of the primary side relay joint and the connection port of the main plug connected to the gas supply side pipe connection port, As an electrically insulating means, an electrical insulating layer coated on the surface of at least one of the male screw or the female screw, and an adhesive layer for adhering a screw screwed to the screw coated with the electrical insulating layer, Electrical insulation sandwiched between the side end surface of the primary side relay joint or the main plug having the female screw and the male screw of the male plug or the primary side relay joint having the male screw and a side surface in the direction orthogonal to the axis on the inner side in the axial direction. The coupling device for connecting a gas meter according to claim 1, wherein the coupling device comprises an annular ring made of a conductive material.