JPH0727242U - Gas insulated pipeline - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is simple, both tubes can be easily attached and detached, and the appearance is improved. [Structure] A flange 4 is formed at the end of the metallic tube 1,
Both flanges 4 of the two pipes 1 are joined, both flanges 4 are fastened with bolts and nuts 7, a conductor 2 is arranged inside both pipes 1, and an insulating gas 3 is enclosed. In a gas-insulated pipeline in which both pipes 1 are energized, a copper layer made of silver plating on copper thick plating, sprayed silver on sprayed copper, or silver plating on a copper plate on the joint surface of both flanges 4 1
A silver layer 12 is formed on 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas-insulated pipe line in which a conductor is arranged in a metallic pipe body, an insulating gas is sealed therein, and the pipe body is energized.

[0002]

[Prior art]

 In general, as shown in FIG. 2, a gas-insulated pipe is provided with a conductor 2 inside a metallic pipe 1, an insulating gas 3 is enclosed, and the pipe 1 is energized to prevent inductive damage. , Measures to reduce iron loss and reduce potential rise.

By the way, in the conventional gas-insulated pipe line, as shown in FIG. 3, flanges 4 are formed at the ends of two pipe bodies 1, respectively, and an annular groove 5 is formed in the joint surface of one flange 4. Then, the O-ring 6 is inserted into the annular groove 5, the flanges 4 of the two pipes 1 are joined, and the bolts and nuts 7 are tightened. Then, the connecting body 8 is fixed to the outer surfaces of the two pipes 1 by welding, and both ends of the bolt wire 9 are fixed to the connecting body 8 by the bolts 10 to electrically connect the two pipes 1.

Further, as shown in FIG. 4, an annular groove 5 is formed on the outer surface of one end of one tube body 1 to insert an O-ring 6, and the diameter of the inner surface of the other tube body 1 is adjusted. The outer surface and inner surface of the ends of both pipes 1 are joined together, and the end face of the other pipe 1 and the outer face of one pipe 1 are welded together to electrically connect both pipes 1 is doing.

[0005]

[Problems to be solved by the device]

 In the case of the conventional gas-insulated pipeline shown in FIG. 3, there are problems that the number of parts is large, the configuration is complicated, and the appearance is poor. Further, in the case of the conduit shown in FIG. 4, since welding is used to connect both pipes 1, there is a problem that it is extremely difficult to attach and detach both pipes 1. The present invention has been made in consideration of the above points, and an object thereof is to provide a gas-insulated pipeline which has a simple structure, is easy to attach and detach both tubes, and has a good appearance.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a flange at the end of a metallic tube, joins the two flanges of two tubes, and fastens both flanges with bolts and nuts. In a gas-insulated conduit in which a conductor is placed inside both of the pipes and an insulating gas is enclosed so that the two pipes are energized, the joint surface of both flanges is plated with copper. In addition, a silver layer is formed on a copper layer formed by silver plating, sprayed silver on sprayed copper, or silver plating on a copper plate.

[0007]

[Action]

 The gas-insulated pipe line of the present invention constructed as described above has a silver-plated copper-plated silver film, a sprayed copper-sprayed silver film, or a copper-plate silver-plated film on the joint surfaces of the flanges of both metallic pipe bodies. Since the silver layer is formed on the copper layer consisting of the two pipes, the two pipes are electrically connected well, and the structure is simple, and welding is not used to connect both pipes. The body is easy to put on and take off, and the appearance is not impaired.

[0008]

【Example】

 An example will be described with reference to FIG. In the figure, the same reference numerals as those in FIG. 3 indicate the same or corresponding ones, and on the joint surfaces of the flanges 4 of the two iron pipe bodies 1 of FIG. The silver layer 12 is formed on the copper layer 11, such as sprayed silver or silver plating on a copper plate, both silver layers 12 are joined, and both flanges 4 are fastened with bolts and nuts 7. As shown in FIG. 2, the conductor 2 is arranged in the tube body 1 and the insulating gas 3 is enclosed therein. When the tubular body 1 and the flange 4 are made of aluminum, a base treatment with zinc or tin is performed before copper plating.

[0009]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. In the gas-insulated pipeline of the present invention, a copper layer 11 made of copper thick plating, sprayed copper or a copper plate is formed on the joint surface of the respective flanges 4 of both metallic pipe bodies 1, and a silver layer is formed on the copper layer 11. Since the silver layer 12 made of plating or sprayed silver is formed, the two tubes 1 are sufficiently electrically connected and the structure is simple, and no welding is used to connect the two tubes 1. Both pipes 1 can be easily attached and detached, and the appearance can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of a gas-insulated line.

FIG. 3 is a sectional view of a conventional example.

FIG. 4 is a sectional view of another conventional example.

[Explanation of symbols]

 1 Tube 2 Conductor 3 Insulating Gas 4 Flange 7 Bolt, Nut 11 Copper Layer 12 Silver Layer

Claims (1)

[Scope of utility model registration request] 1. A flange is formed at an end of a metallic tube,
The two flanges of the two pipes are joined to each other, the flanges are fastened with bolts and nuts, conductors are arranged inside the two pipes, and an insulating gas is sealed in the pipes. In a gas-insulated conduit for energizing the body, the joint surface of the flanges is silver-plated on copper-thickness plating,
Alternatively, a gas-insulated pipeline in which a sprayed silver is formed on a sprayed copper, or a silver layer is formed on a copper layer made of silver plating on a copper plate.