JP3237980B2 - Cross joint for gas meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas meter cross joint which is installed between a gas supply side and a gas consuming facility side and to which a gas meter is attached.

[0002]

2. Description of the Related Art As shown in FIG. 6, LP gas and city gas are generally used after a gas meter 70 is mounted between a pipe on a gas supply side and a pipe on a gas consuming facility side. FIG.
In the example shown in FIG.
The gas inlet 71 is connected by a union joint 81, and the pipe 82 on the gas consuming equipment side is connected to the gas outlet 72 of the gas meter 70 by a union joint 83. Therefore, the gas is
Then, the gas flows into the gas meter 70 through the union joint 81 (see arrow A in the figure), and is supplied from the gas meter 70 to the consuming equipment through the union joint 83 and the pipe 82 (see arrow B in the figure).

In the gas meter 70 described above, the gas flows in the directions indicated by arrows a and b because the left side of the drawing is the gas inlet 71 and the right side is the gas outlet 72. This gas flow is standard, but there is also a gas meter 70 'with a gas inlet 71' on the right side of the gas meter and a gas outlet 72 'on the left side, in which case the gas is indicated by an arrow. As shown by c and d, the gas meter 70 'enters the gas meter 70' through a pipe 80 'on the gas supply side.
Is supplied to the consuming equipment through a pipe 82 'on the gas consuming equipment side. Incidentally, the case of a gas meter with a left inlet and a right outlet (hereinafter referred to as a standard type) indicated by arrows a and b is approximately 70.
In the case of gas meters with right inlet and left outlet (hereinafter referred to as "backflow type") indicated by arrows c and d, the ratio is about 30%.

In recent years, it has been desired in the industry to use a standard gas meter in order to prevent gas accidents, secure safety, reduce manufacturing costs, and the like. For this reason, it is being attempted to unify the use of a gas meter of the backflow type so far in the case of replacing the gas meter with a standard type when replacing the gas meter. However, if a standard gas meter is connected to the piping system to which the backflow gas meter was initially connected, the gas supply side piping and the gas inlet of the gas meter,
The gas outlet pipe and the gas outlet of the gas meter are reversed. In such a case, the existing piping system may be changed left and right, but this would require a very large amount of work, and the number of joints and nipples would be unnecessarily large, and there were places where gas leakage might occur. Increased, aesthetically bad and cumbersome, practically difficult.

Therefore, the piping on the supply side and the consumption side may be left as it is, and the way of connection between the piping and the gas meter may be changed. For example, in the case of changing from the backflow type gas meter to the standard type gas meter in FIG. 6 (when installing the gas meter 70 in which the gas inlet 71 is on the left side and the outlet 72 is on the right side), instead of the union joints 81 and 83, , The pipe 80 ′ and the gas inlet 71 of the gas meter 70, and the pipe 82 ′ and the gas outlet 7
2 may be connected by appropriate pipes. In other words, it is only necessary to cross the two pipes.

[0006]

As described above, in particular, when a standard gas meter is installed in an existing piping system corresponding to a backflow gas meter, the pipe on the gas supply side and the gas consuming equipment side is connected to the gas meter. In this case, the crossed pipes may be provided in a crossed manner, but in this case, the crossed pipes are not only lengthened in the vertical direction, but also require a considerable depth. In particular, in the case of a vertically long gas meter equipped with a microcomputer, there is often not enough room in the mounting space in the vertical direction. In addition, in the case of crossed pipes, for example, two pipes must be arranged in an X-shape, and the construction is troublesome.
It is virtually impossible.

Accordingly, the present invention has been made in view of the above problems, and enables a gas meter having gas inlets and outlets having reversed positions to be easily and conveniently mounted. In addition to providing space for the switching piping and providing a means to speed up the construction work, the conventional piping, gas supply side piping and gas consumption side piping are separate systems, so land subsidence and frost heave It is intended to prevent the gas meter from being damaged.

[0008]

The above object is achieved by a gas meter cross joint according to the present invention. That is, the cross joint of the present invention is a cross joint for a gas meter installed between the gas supply side and the gas consuming facility side, and is provided at one end of the cross joint, and the pipe on the gas supply side is connected. A gas supply-side pipe connection port, provided at the other end of the cross joint in the same direction as the gas supply-side pipe connection port, and connected to a gas consumption-side pipe; A gas meter outlet side connection port provided at one end of the joint and connected to an outlet of the gas meter, and provided at the other end of the cross joint in the same direction as the gas meter outlet side connection port and connected to an inlet of the gas meter. A gas meter inlet side connection port, a supply side flow path communicating the gas supply side pipe connection port and the gas meter inlet side connection port, and intersects with the supply side flow path in a non-communication state inside; Out of mouth and gas meter Characterized in that it comprises integrally a consumer-side flow path communicating the side connection port.

[0009]

[Function] LP gas or city gas from the gas supply side
Simply referred to as gas) flows from the gas supply side pipe connection port of the cross joint to the gas meter inlet via the supply side flow path and the gas meter inlet side connection port. The gas after operating the gas meter enters the gas meter outlet-side connection port of the cross joint from the outlet of the gas meter, and is guided to the gas consuming facility through the consuming side flow path and the gas consuming side pipe connection port.

In this cross joint, the supply-side flow path and the consumption-side flow path intersect in a non-communicating state inside, so that the gas from the gas supply source flows from one end of the cross joint through the supply-side flow path. The gas from the gas meter flows toward the other end, and the gas from the gas meter also flows from the one end to the other end of the cross joint through the consumption flow path. This makes it easy to switch to a gas meter where the inlet and outlet of the gas are reversed, requiring less space in the piping for the switch, providing an aesthetically pleasing appearance, and subsidence. Also, the gas meter is not damaged by frost heave.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cross joint for a gas meter according to the present invention will be described based on embodiments. However, in the following embodiment, as described later, it is assumed that the present invention is applied to a gas meter having a wide width of 130 mm between an inlet and an outlet of the gas meter. FIG. 1 is a plan view of the cross joint according to the embodiment, and FIG. 2 is a front view as viewed from an arrow A in FIG. The cross joint 1 has a longitudinal direction in the width direction of the gas meter. The cross joint 1 opens from one end (the right side in the drawing) and has a gas supply side pipe connection port 2 to which a gas supply side pipe 20 is connected. , Opening from the other end (left side in the drawing), and piping 2 on the gas consuming side (various gas appliances)
1 is connected to a gas-consumption-side pipe connection port 3, which is open from one end, a gas-meter outlet-side connection port 4 to which an outlet 22 of the gas meter is connected, and which is open from the other end, and is connected to an inlet 23 of the gas meter. A gas meter inlet side connection port 5, a supply side flow path 6 communicating the gas supply side pipe connection port 2 and the gas meter inlet side connection port 5, and the supply side flow path 6 intersects in a non-communication state inside, There is provided a consumption side flow path 7 which communicates the gas consumption side pipe connection port 3 and the gas meter outlet side connection port 4.

At one end of the cross joint 1, the gas meter outlet side connection port 4 is located outside the connection port 2 in the longitudinal direction, and similarly, at the other end, the gas meter inlet side connection port 5 is outside the connection port 3. To position. Further, the gas meter outlet side connection port 4 and the connection port 2 and the gas meter inlet side connection port 5 and the connection port 3 are positioned in the opening directions having an angle of 90 ° with each other.

The supply side flow path 6 and the consumption side flow path 7 intersect at a central portion 1 a of the cross joint 1. As can be seen from FIGS. 1 and 2, the supply side and the consumption side flow paths 6, 7 exist in the same plane except for the central intersection, and are arranged adjacent to and parallel to each other. The piping inside 1 is set up efficiently in terms of space. Screws 10 and 11 are formed on the outer periphery of the gas supply side pipe connection port 2 and the gas consumption side pipe connection port 3, respectively, and the connection ports 2 and 3 are external threads. On the other hand, the inner circumference of the gas meter outlet side connection port 4 and the gas meter inlet side connection port 5 has
2, 13 are formed, and the connection ports 4, 5 are female threads.

An example of the main dimensions of such a cross joint 1 will be described for reference. The length a between the centers of the connection ports 2 and 3 is 90.
mm, the length b between the centers of the connection ports 4 and 5 is 130 mm, and the length c between the tip of the connection ports 2 and 3 and the relative end of the cross joint 1
Is 50 mm, and the length d between the distal ends of the connection ports 4 and 5 and the relative ends of the cross joint 1 is 55 mm. Of these, the dimensions a,
b corresponds to the distance between the gas inlet and the gas outlet of the gas meter, and 90 mm is suitable for a narrow gas meter, and 130 mm is suitable for a wide gas meter.

As shown in FIGS. 1 and 2, in order to connect the existing gas supply side and gas consumption side piping corresponding to the backflow gas meter to the standard gas meter 70 using the cross joint 1 as described above. Do. In FIG. 1, after the counter 70 a of the standard gas meter 70 is disposed so as to be on the front side, the end face of the union joint main body 30 previously attached to the cap nut (fixing member) 31 in order to improve airtightness. Is brought into contact with the end face of the gas supply side pipe connection port 2 with the packing 32 interposed therebetween. Then, the cap nut 31 is screwed into the outer peripheral screw 10 of the connection port 2 with the packing 32 for improving airtightness interposed therebetween, so that the gas supply-side pipe 20 and the gas supply-side pipe connection port 2 are airtight. Are linked together.
The connection between the gas consuming side pipe 21 and the gas consuming side pipe connection port 3 is performed in exactly the same manner.

On the other hand, in FIG.
0 inlet 23 and the gas meter inlet side connection port 5 of the cross joint 1
As described above, the union joint body 40 attached to the cap nut 41 is connected to the gas meter inlet side connection port 5 as described above.
And the union joint body 4
The packing 42 may be brought into contact with the end face of the gas meter 70, the inlet 23 of the gas meter 70 may be fitted, and the cap nut 41 may be screwed. Of course, the connection between the outlet 22 of the gas meter 70 and the gas meter outlet side connection port 4 is the same.

As described above, the existing piping system corresponding to the backflow gas meter and the standard gas meter 7 using the cross joint 1 are used.
0, the gas from the pipe 20 on the gas supply side is
The gas flows to the inlet 23 of the gas meter 70 via the gas supply side pipe connection port 2, the supply side flow path 6, and the gas meter inlet side connection port 5. The gas from the outlet 22 of the gas meter 70 flows into the gas consuming side pipe 21 through the gas meter outlet side connection port 4, the consumption side flow path 7, and the gas consumption side pipe connection port 3. Therefore,
By using the cross joint 1, a standard gas meter can be easily attached to an existing piping system even if the piping system is provided for a backflow gas meter. In addition, since the supply side and the consumption side flow paths 6 and 7 are integrally disposed inside the cross joint 1 and exist in the same plane except for the intersection, the dimension c is 50 mm and the dimension d is 55 mm.
mm, the cross joint 1 is compact, the space required for the switching pipe is small, and even if it is a vertically long gas meter, it cannot be attached.

In the above embodiment, pipes 20 and
In this embodiment, the dimension a is set to 90 mm and the dimension b is set to 130 mm as described above. And a wide gas meter, so a narrow gas meter can be attached. In this case, in such a piping system, the direction of the cross joint 1 is changed, and gas meters are connected to the connection ports 2 and 3 as a gas meter inlet side connection port and a gas meter outlet side connection port, and the gas consumption side and the gas supply side are connected. The pipes may be connected to ports 4 and 5 as connection ports.

When the cross joint 1 is used for both narrow and wide gas meters, the pipes and the gas meters are connected to the connection ports 2 and 3 and the connection ports 4 and 5 without changing the connection configuration shown in FIGS. In order to be able to connect any of them, refer to FIGS.
It is necessary to prepare a cross joint in which female threads are provided in the connection ports 2 and 3 and male threads are provided in the connection ports 4 and 5, separately from the cross joint 1 as shown in FIG. However, in this case, two cross joints are required, so if a cross joint has both male and female threads at the connection ports 2 and 3 and the connection ports 4 and 5, respectively, 1
One cross joint can be used for both gas meters. An example is shown in FIG. In cross joint 1 _-1 in Figure 3, the connection opening 2,3
Only male screws 1 are shown in connection ports 2 and 3, respectively.
0, 11 and female screws 10 ', 11' are provided (the same applies to the connection ports 4, 5). However, if both the male screw and the female screw are provided, the male screw of the connection ports 2, 3 or the connection ports 4, 5 will appear depending on the type (wide width and narrow width) of the gas meter to be mounted. Absent.

The screws provided in the four connection ports 2 to 5 may all be female threads. In this case, the connection between the cross joint, the pipe, and the gas meter is as shown in FIG. Here, a connection configuration of a gas outlet 22 of the cross joint 1 _-2 gas supply side connection port 2 and the gas supply side of the pipe 20 and the gas meter outlet side connection port 4 and the gas meter 70. Connection port 4
The outlet 22 is connected with the union joint body 50, the cap nut 51 and the packing 52 in the same manner as shown in FIG. On the other hand, in general, female threads are often provided at the connection portions of the pipes on the gas supply side and the gas consumption side, and the pipe 20 on the gas supply side and the connection port 2 are both female threads. In addition to the joint body 50, the cap nut 51, and the packing 52, the connection port 2 and the pipe 20 are connected using an adapter 55 having male threads at both ends. Needless to say, the connection between the gas consuming side pipe connection port 3 and the gas consuming side pipe, and the connection between the gas meter inlet side connection port 5 and the gas inlet of the gas meter 70 may be performed in the same manner, and when the narrow and wide gas meters are replaced. The connection form is similar.

FIG. 5 shows a modification of the connection form shown in FIG. In cross joint 1 _-3 shown here, the male screw is provided on the gas supply side connection port 2 and the gas consumer connection port 3, the gas meter outlet side connection port 4 and the gas meter inlet-side connection port 5, the cap nut A snap ring (prevention member) 58 for preventing the 51b from coming off is fitted so as to be able to enter and exit. In this case, the pipe 20 on the gas supply side and the connection port 2 are connected using an adapter 57 having a male thread at one end, a cap nut 51a, and a packing 52a. On the other hand, the connection port 4 and the gas outlet 22 of the gas meter 70 contact the end face of the connection port 4 with the end face of the gas outlet 22 and are connected with the cap nut 51b with the packing 52b interposed therebetween. At this time, since the snap ring 58 is fitted into the corresponding groove of the cap nut 51b, the cap nut 51
b is prevented from coming off.

In addition, one of the gas supply side pipe connection port 2 and the gas consumption side pipe connection port 3 and the gas meter outlet side connection port 4 and the gas meter inlet side connection port 5 are provided. The mouths 4, 5) may have a male screw and a female screw, and the other may have only a female screw. In this case, for the connection port having a male screw and a female screw, the union joint body,
Both the pipe and the gas meter can be connected by the cap nut and the packing. In a connection port having only a female screw, an adapter is unnecessary when connecting a gas meter to this connection port, but an adapter may be used when connecting a pipe.

Further, one of the gas supply side pipe connection port 2 and the gas consumption side pipe connection port 3 and the gas meter outlet side connection port 4 and the gas meter inlet side connection port 5 is provided. There is also a mode in which the ports 4 and 5) have a male screw and the other has a female screw (see the embodiment shown in FIGS. 1 and 2). In this case, in order to connect the gas supply side and the gas consumption side piping to the connection port having the external thread, it is sufficient to carry out as shown in FIG. 1, and connect the inlet and the outlet of the gas meter to the connection port having the internal thread. May be performed as shown in FIG.
On the other hand, in order to connect the pipes on the gas supply side and the gas consumption side to the connection port of the female screw, an adapter 5 as shown in FIG.
5 may be used. In order to connect the inlet and the outlet of the gas meter to the connection port of the male screw, an adapter of a type opposite to the adapter 55 may be used.

[0024]

The cross joint for a gas meter according to the present invention has the following effects because it is configured as described above. (1) Since the supply-side flow path and the consumption-side flow path intersect with each other in a non-communicating state, a gas meter in which the positions of the gas inlet and the gas outlet are reversed can be easily attached to the existing piping system. In particular, the standard gas meter can be easily attached to the existing piping system to which the backflow gas meter is attached. (2) In addition to the supply-side flow path and the consumption-side flow path being integrated in an intersecting manner, by providing the supply-side flow path and the consumption-side flow path in the same plane except at the intersection, the cross joint is formed. Since the space is further compacted, the space for the cross-shaped pipe is small, and even when the cross-shaped pipe is used particularly when a vertically long gas meter is used, the vertically long gas meter does not become unable to be mounted. (3) The dimension between the gas supply side pipe connection port and the gas consumption side pipe connection port is, for example, 90 mm, and the dimension between the gas meter outlet side connection port and the gas meter inlet side connection port is, for example, 1 mm.
By setting it to 30 mm, it is possible to cope with both narrow and wide gas meters in which the distance between the gas inlet and outlet (90 mm and 130 mm) is different. (4) Since the cross joint itself is a solid unit, the gas meter which is normally mounted in a suspended state is prevented from being damaged.
It is also effective in normalizing functions and improving piping rigidity. (5) By arranging the supply-side flow path and the consumption-side flow path adjacent and parallel to each other except at the intersection, the gas meter is closer to the cross joint as compared with a conventional pipe in which pipes cross in an X shape. The gas meter can be mounted in such a manner that the space for mounting the gas meter in the vertical direction is small.

[Brief description of the drawings]

FIG. 1 is a plan view of a cross joint according to one embodiment.

FIG. 2 is a front view of the cross joint shown in FIG.

FIG. 3 is a plan view showing a modified example of the cross joint shown in FIG. 1;

FIG. 4 is a side view showing a connection configuration of a pipe and a gas meter to a cross joint according to another embodiment.

FIG. 5 is a side view showing a connection configuration of a pipe and a gas meter to a cross joint according to still another embodiment.

FIG. 6 is a front view showing an example of a mounting mode of a gas meter in a normal gas piping system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cross joint 2 Gas supply side pipe connection port 3 Gas consumption side pipe connection port 4 Gas meter outlet side connection port 5 Gas meter inlet side connection port 6 Supply side flow path 7 Consumption side flow path 10, 11 Male screw 12, 13 Female screw

──────────────────────────────────────────────────続 き Continuing on the front page (72) Muneo Hanai, 9-9 Fukakusa Zendoji-cho, Fushimi-ku, Kyoto 4 Kyoto Oil Gas Co., Ltd. Field surveyed (Int.Cl. ⁷ , DB name) G01F 1/00-9/02

Claims (9)

(57) [Claims] A cross joint for a gas meter installed between a gas supply side and a gas consuming facility side, the gas supply side being provided at one end of the cross joint and connected to a gas supply side pipe. A pipe connection port, a gas supply side pipe connection port provided at the other end of the cross joint in the same direction as the gas supply side pipe connection port, and connected to a gas consumption side pipe, and one end of the cross joint And a gas meter outlet side connection port to which the outlet of the gas meter is connected, and a gas meter inlet side connection port provided at the other end of the cross joint in the same direction as the gas meter outlet side connection port and connected to the gas meter inlet port. And a supply-side flow path communicating the gas supply-side pipe connection port and the gas meter inlet-side connection port. The supply-side flow path intersects the inside of the supply-side flow path in a non-communicating state, and the gas consumption-side pipe connection port and the gas meter outlet. Connection port Gas meter for cross joint, characterized in that it comprises integrally with the consumer channel, the communicating. 2. The cross joint for a gas meter according to claim 1, wherein the supply-side flow path and the consumption-side flow path exist in the same plane except for the intersection. 3. The cross joint for a gas meter according to claim 1, wherein the supply-side flow path and the consumption-side flow path are arranged adjacent to each other and parallel to each other except at the intersection. . 4. A gas supply side pipe connection port, a gas consumption side pipe connection port, a gas meter outlet side connection port, and a gas meter inlet side connection port all have a male screw and a female screw. A cross joint for a gas meter according to claim 2 or 3. 5. A gas supply side pipe connection port and a gas consumption side pipe connection port, and a gas meter outlet side connection port and a gas meter inlet side connection port, one of which has a male screw and the other has a female screw. The cross joint for a gas meter according to claim 1, wherein the cross joint has: 6. A gas supply side pipe connection port and a gas consumption side pipe connection port, a gas meter outlet side connection port and a gas meter inlet side connection port have one of a male screw and a female screw, and the other has a male screw and a female screw. The cross joint for a gas meter according to claim 1, wherein the cross joint has only a female screw. 7. The gas supply side pipe connection port and the gas consumption side pipe connection port, and the gas meter outlet side connection port and the gas meter inlet side connection port all have female threads. The cross joint for a gas meter according to claim 2 or 3. 8. One of the gas supply-side pipe connection port and the gas consumption-side pipe connection port and the gas meter outlet-side connection port and the gas meter inlet-side connection port has a male screw, and the other is its connection port. 4. The cross joint for a gas meter according to claim 1, further comprising a retaining member for preventing a fixing member used when attaching the fixing member to a connection partner. 9. A gas supply-side pipe connection port and a gas meter outlet-side connection port at one end of the cross joint, and a gas consumption-side pipe connection port and a gas meter inlet-side connection port at the other end of the cross joint are mutually 90 °. 9. The gas meter according to claim 1, wherein the gas meter is positioned in an opening direction having an angle of .times..times..times..times..times..times..times..times. For cross joints.