JPS58153312A - Connecting part assembling method for high voltage device - Google Patents

Abstract

PURPOSE:To enhance the reliability of a high voltage device by inserting a covering member into a rod-shaped clamping member when assembling the connecting part of the device, thereby smoothly slidably inserting the clamping member into the clamping hole of the connecting part and preventing the production of metal powder. CONSTITUTION:When high voltage devices and/or cover are connected and assembled through a flange, a covering member, i.e., a cylindrical plastic member 1 is inserted and enclosed into a rod-shaped member such as a stud and a bolt. In this manner, the stud and bolt are smoothly slidably inserted into the clamping holes of the flanges or the opponent flange or cover. Thus, no metal power is produced due to slide as the conventional one. Accordingly, the metal powder does not invade into the container, nor scatter in the neighborhood, nor insulation is damaged with the metal powder. That is, the reliability can be enhanced.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a high-voltage machine IIK, in particular, to prevent the generation of metal powder when connecting gas-insulated electrical equipment via studs or bolts. This invention relates to a method for assembling a connection part of high voltage equipment.

Conventionally, when assembling high-voltage equipment such as gas-insulated electrical equipment or transformers, and joining the connections, the equipment was enclosed in a plastic house as a dust-proofing measure to prevent outsiders from entering the equipment container. Or a friend working in a dust-proof room.

However, @ is a gas-insulated circuit breaker, a new circuit breaker.

Assembling and connecting work such as connecting earthing devices, #edges, or gas-insulated electrical equipment such as gas-insulated transformers, or attaching lids to containers such as gas-insulated electrical equipment such as oil-immersed transformers. In this case, studs are used to act as guides for the L-bumps and d-guides, and bolts are used to tighten the 7-lunge comrades or lids.

During such assembly and connection work, metal powder is generated due to sliding between rod-shaped tightening members such as studs or bolts and the inner surface of tightening holes such as bolt holes through which they are inserted. There was a risk of it entering the interior or scattering into the dust-proof workplace.

[@target of invention]

The present invention has been developed with the above points in mind, and its purpose is to provide a highly reliable method for assembling high-voltage equipment connections that prevents the generation of metal powder.

[Summary of the invention]

In order to achieve this purpose, when assembling high-voltage equipment containers and connecting them to each other, a covering member is inserted in advance into a rod-shaped fastening member that is pushed through a fastening hole in a joint, and this covering member is inserted in advance. The feature is that the production of metal powder is prevented by performing the tightening 1 assembly and connection work after the rod-shaped tightening member with the member inserted therein is inserted into the tightening hole. Note that the rod-shaped tightening member is made of a stud or a bolt, and a method of inserting a cylindrical plastic member into this rod-shaped tightening member is suitable.

[Embodiments of the invention]

Hereinafter, an embodiment of the method for assembling a connection part of a high voltage device according to the present invention will be described with reference to WAm. When connecting seven flanges to each other at the joints of gas-insulated electrical equipment, or when connecting lids to respective containers of gas-insulated electrical equipment or transformers, there is work such as attaching with flanges. For example, when joining flanges together,
A rod-shaped tightening member such as a stud with one end fixed to the 7 flange on one side, or a bolt used to connect the 7 langes to each other or the 7 langes and the lid is used. Before such connection assembly work, a member to be machined as shown in FIG. 1, ie, a cylindrical plastic member (1), is inserted into the rod-shaped tightening member in advance.

This cylindrical plastic member is made of Teflon (trade name), for example.
, consisting of a plastic tube such as polyethylene or soft PVC. The inner diameter of the cylindrical plastic member is formed to a size that allows it to be inserted into and covered with the rod-shaped clamping member. The length is sized to cover the tips of studs and bolts. Then, after passing the stud and bolt through the tightening hole, the cylindrical plastic at the tip where the nut is tightened can be easily removed with a thinner cut (2).
to form one main body portion (la) and a removed portion (1b). As shown in FIG. 2, the cylindrical plastic member (1) can have a portion corresponding to the above-mentioned removed portion (lb) K shaped like a middle tube (3).

Next, the effects of the present invention will be explained. When connecting and assembling high-voltage devices or lids, etc. via the 7-lunge, a covering member (i.e., a cylindrical plastic member + 1) is inserted and wrapped around rod-shaped tightening members such as studs and bolts. Studs and bolts can be smoothly slid and inserted into the tightening holes in each other's 7 langes, or in the mating 7 lunge or lid rim. Therefore, unlike in the past, metal powder is not generated due to sliding; therefore, unlike in the past, metal powder does not enter the inside of the container and scatter around.
There is also a greater risk of causing dielectric breakdown due to metal powder.

・Nine studs act as guides to prevent unstable work, especially when connecting large equipment.
Even though the force is 0, the effect of inserting the cylindrical plastic member (1) is great.

Furthermore, since the cylindrical plastic member (1) is inserted, before the stud or bolt enters the mating hole,
Without accidentally hitting the other side's flange surface or the joining surface of the lid and damaging the original surface.

In particular, there is no risk of scratching the contacting surface such as the backing. Further, there is no risk of metal powder adhering to the backing surface and loss of sealing function.

Then, after joining and passing the stud or bolt through the supply hole, in order to expose the threaded part for attaching the nut, cut the notch 0 part (2) and remove the removed part (1b), or remove the cap (3). You can easily screw the nut into the stud or bolt by removing the nut.

[Effects of the Invention] As explained above, according to the present invention, in the work of assembling the connection part of high-voltage equipment, the 7 langes of the connection part can be connected to each other or 7
By inserting the cylindrical plastic member into the stud and bolt when assembling the lunge and the lid, it can be slid smoothly into the tightening hole, preventing the generation of metal powder and improving reliability. It is possible to provide a method for assembling a connection part of high voltage equipment.

[Brief explanation of drawings]

1s is a side view of a cylindrical plastic member used in the method for assembling the connection part of high voltage equipment of the present invention, and Figure 2 is the present invention 0@0
It is a side view of the cylindrical plastic member according to @Confucian application. (1)--Tubular plastic member (1fi)--Body II (lb)/Four removal section (movement...Cut III) (3) Song/cap agent Patent attorney Inoue - Male number 1 figure

Claims (2)

[Claims] (1) When assembling containers for high-voltage equipment and connecting them to each other, a covering member is inserted in advance into the rod-shaped tightening member that is inserted into the tightening hole of the joint part, and this heavy-duty member is inserted and rounded. A method for assembling a connecting part of a high voltage device, characterized in that a rod-shaped tightening member is inserted into the tightening hole and then tightened to make a tight connection. (2) If the tightening member is not a stud or bolt, the cylindrical plastic member is attached to the rod-shaped tightening member in advance to prevent metal powder from being generated by sliding when pushing the tightening member into the tightening hole. 9. A method for assembling a connection part of a high voltage device according to claim 1, by inserting and attaching a covering member comprising: