JPH0592653U - Gas meter piping structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to increase the stability of the gas meter,
It is intended to provide a gas meter piping structure that simplifies the construction of the secondary side piping and allows simple piping construction in appearance. [Structure] A pair of inlet-side joints and outlet-side joints fixed to the outer wall of the building, and a gas meter having a pair of gas outlets and inlets at the lower end are connected to the upper ends of the inlet-side joints and outlet-side joints. The lower part of the side joint is connected to the flexible pipe on the temporary side via a valve, and the lower part of the outlet joint has an upper inlet side connection port and a plurality of outlet side connection ports connected to the secondary side pipe in the lower part. With the axial center of the outlet side connecting port with respect to the axial center of the inlet side connecting port is connected to the inlet side connecting port of the header provided eccentrically on the front side, to each outlet side connecting port of the header Is a gas meter piping structure characterized by connecting flexible pipes that can be bent and piping to each supply destination on the secondary side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas meter pipe connection structure for measuring the flow rate of household city gas or the like.

[0002]

[Prior Art]

 As shown in Fig. 3, the conventional gas meter piping connection structure for city gas, etc., is provided with a plurality of universal joints 4 and 4'on the gas flow port connection screws on the upper and lower sides of the gas meter 1 on the inlet side and the outlet side. The pipes were connected to the pipes 3 and 3'through the universal joints 4 and 4'and the gas meters were suspended. A cock 5 is connected in the middle of the temporary pipe 3 ', and a T-shaped joint 6 with a branching port closed is connected in the middle of the secondary pipe 3 to be connected to the supply destination in the building.

[0003]

[Problems to be solved by the device]

 The conventional pipe connection of such a gas meter has the following problems. That is, since the gas meter is supported by the gas flow port connecting screw on the upper part of the gas meter, excessive stress is likely to occur in the connecting screw. Also, universal joints 4 and 4'must be used in order to match the distance between the flow ports of the gas meter 1 and the distance between the pipes 3 and 3 ', so that the distance between the pipes 3 and 3'and the gas meter 1 is increased. Since it is connected by piping, the stability after connection is poor, and there is a risk of cracks in the flow port of the gas meter 1 due to vibration or external pressure. Further, since a plurality of universal joints are used for connecting the gas meter 1, the connecting work is difficult.

Further, since the pipe is branched from one outlet side pipe 3 to a plurality of supply destinations in the building, it is necessary that the outlet side pipe 3 has a large diameter. Moreover, it is difficult to increase the number of supply ports in the building. There were problems such as. The present invention solves the above problems, and provides a gas meter pipe structure that increases the stability of the gas meter, facilitates the construction of the secondary side piping, and makes the piping simple in appearance. .

[0005]

[Means for Solving the Problems]

 The gist of the present invention is to connect a pair of inlet-side joints and outlet-side joints fixed to the outer wall of a building, and a gas meter having a pair of gas outlets and inlets at the upper end of the inlet-side joints and outlet-side joints. The lower part of the inlet side joint is connected to a flexible pipe on the temporary side through a valve, and the lower part of the outlet side joint has an upper inlet side connection port and is connected to a secondary side pipe in the lower part. Connected with the inlet side connection port of the header provided with the outlet side connection port and the axis of the outlet side connection port is eccentric to the front side with respect to the axis of the inlet side connection port, and each output of the header is connected. The gas meter piping structure is characterized in that a flexible pipe that can be bent is connected to the side connection port and is connected to each supply destination on the secondary side.

[0006]

[Action]

 Since the present invention has the above configuration, the gas meter is fixed to a pair of inlet side joints fixed to the outer wall of the building and the upper side of the outlet side joints, and a plurality of headers are connected via the headers connected to the lower side of the outlet side joints. A flexible pipe that can be bent from the outlet port is directly connected to each supply destination inside the building to send gas. For this reason, the gas meter is attached so as to be in contact with the wall of the building, so it is stably fixed. In addition, since the flexible pipe that can be bent is connected to the secondary side pipe, the header can be connected according to the outlet side joint fixed to the building. This eliminates the need for conventional universal joints. In addition, the header inlet and outlet connection ports are eccentric, and the outlet connection port is on the front side, so connection work with the secondary piping can be easily performed. Furthermore, since it is possible to pipe directly to each supply destination in the building from directly below the gas meter, the number of pipe connection parts can be reduced, and maintenance and management of the secondary side pipe can be performed easily.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The gas meter 10 is provided with an inflow port 11 and an outflow port 12 on both sides of the lower part, and the inflow port and the outflow port are connected and fixed to the upper ends of an inlet side joint 21 and an outlet side joint 22 using cap nuts 23, 23. is there. The inlet side joint and the outlet side joint are fixed to the fixing plate 31 fixed to the outer wall of the building using the fixing metal fittings 32 and the screws 33. A cock 40 is connected to the lower end of the inlet side joint 21, and the cock 40 is connected to a primary side flexible pipe 50 which is erected from the ground and is piped.

The lower end of the outlet joint 22 is connected to the inlet connection port 61 of the header 60. At the bottom of the header 60, two outlet connection ports 62, 63 are provided which are eccentric to the front side of the axis of the inlet connection port 61, and the pressure detection connection port closed by a plug 64 is provided at the side part. 65 is provided. The pressure detecting connection port 65 is normally closed and is used when the pressure is inspected by removing the plug 7 at the time of replacing the gas meter or inspecting the secondary side pipe. Further, since the outlet side connection port is on the front side, the space for the fastener can be widened when connecting to the secondary side pipes 81 and 82, and the connection work can be easily performed.

Bendable flexible pipes 81 and 82 such as stainless steel bellows pipes or polyethylene resin pipes are connected to the outlet side connection ports 62 and 63. The flexible pipes 81 and 82 are directly connected to the supply devices in the building through the outlet connection ports 62 and 63 of the header. The number of outlet connection ports of the header is not limited to two, and three to four may be provided. Since the gas meter 10 is connected to the primary and secondary side pipes as described above, it is stably fixed so as to be in contact with the wall surface of the building. Also, since the gas meter is directly connected to the supply destination, the number of connection parts of the pipe is small and it is possible to easily connect to the supply destination with a secondary side flexible tube with a small diameter.

[0010]

[Effect of the device]

 As described above, the gas meter piping structure of the present invention can stably fix and fix the gas meter, and is safe against external pressure, vibration, and strong wind. In addition, it is possible to reduce the number of connecting parts of the secondary side piping, which facilitates piping work and maintenance management. Also, the secondary side pipe can be easily connected to the outlet side connection port of the header, and it is not necessary to use a conventional universal joint, so piping work around the gas meter is easy and the appearance is simple. Piping work with increased safety can be performed.

[Brief description of drawings]

FIG. 1 shows a front view of an embodiment of the present invention.

2 shows a side view of FIG.

FIG. 3 is a perspective view showing a conventional gas meter piping structure.

[Explanation of symbols]

 10 Gas Meter 11 Gas Meter Inlet 12 Gas Meter Outlet 21 Inlet Joint 22 Outlet Joint 31 Fixing Plate 32 Fixing Bracket 50 Primary Flexible Pipe 60 Header 61 Header Inlet Connection Port 62, 63 Header Outlet Connection Port 64 Plug 65 Pressure sensing connection port for header 81, 82 Flexible tube on secondary side

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumitaka Sato 3-27-15 Nishiichinoe, Edogawa-ku, Tokyo (72) Inventor Shigeru Mizutani 2 Daifuku, Kuwana-shi, Mie Hitachi Metals Co., Ltd. Kuwana Plant

Claims (1)

[Scope of utility model registration request] 1. A pair of inlet-side joints and outlet-side joints fixed to the outer wall of a building, and a gas meter having a pair of gas outlets and inlets at the bottom thereof are connected to the upper ends of the inlet-side joints and outlet-side joints, The lower part of the inlet side joint is connected to the flexible pipe on the temporary side through a valve, and the lower part of the outlet side joint has an upper inlet side connection port and a plurality of outlet side connections connected to the secondary side pipe at the bottom. The inlet side connecting port of the header is provided eccentric to the inlet side connecting port with respect to the inlet side connecting port of the header, and the outlet side connecting port of the header is connected. A gas meter piping structure characterized in that a flexible pipe that can be bent is connected to each of the secondary side supply destinations.