JPS5930574Y2 - Conductor connection device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a conductor connection device that prevents the occurrence of partial discharge.

Electric wires have been used to connect devices to which high voltage is applied, such as magnetic levitation railway ground coils. There is a growing demand for higher voltages that can reduce the number of wires and the number of wires used.

Therefore, a structure shown in FIG. 1 has been proposed as a conductor connecting device that facilitates connection to a ground coil.

In the figure, 1 is a conductor, and a contact 1a is provided at the end.

Reference numeral 2 denotes a conductor disposed facing the conductor 1 in the axial direction, and a contactor 2a is provided at the end.

The liquid contactors 1a and 2a form a current-carrying connection through contact.

3 is an insulating member surrounding the conductor 1, and 4 is an insulating member surrounding the conductor 2.

Both paper edge members 3 and 4 are made of hardening resin and have connecting flanges 3a and 4a at their ends.

Reference numeral 5 indicates a groove having a predetermined depth provided on the opposing surfaces of both flanges 3a and 4a, and 6 indicates a sealing member attached to the groove 5, for example, an 01J ring.

Reference numeral 1 denotes a ground layer provided on the outer periphery of the insulating members 3 and 4, and is formed by applying conductive paint or the like.

8 is a fastening member that fastens both flanges 3a, 4a.

As shown in FIG. 1, when a voltage is applied to the conductors 1 and 2 whose sealing member 6 prevents moisture absorption at the current-carrying connection part,
There was a drawback that partial discharge occurred between the conductors 1 and 2 and the ground layer 1, causing dielectric breakdown.

Examining various causes of partial discharge, both flanges 1a
, 2a through the sealing member 6, the opposing surfaces of both flanges 1a and 2a can be brought into complete contact, but the valley groove 5 where the sealing member 6 is attached is not connected to the sealing member 6. Even if it is deformed, it cannot be completely filled, and a minute void remains and this void causes partial discharge.

This idea was made to eliminate the above drawbacks.
A conductor grounding device in which a groove in which a sealing member is installed is covered with a second ground layer, and a first ground layer and a second ground layer provided on the outer periphery of an insulating member are connected by a conductive member. I will provide a.

This will be explained below based on the figures.

In FIG. 2, 1.2, 3, 4, 5, 6. γ and 8 are the same as before.

A second ground layer 9 is provided to cover the valley groove 5, and is formed by applying a conductive paint.

Reference numeral 10 denotes a conductive member provided on each opposing surface of the insulating members 3 and 4, and a first ground layer γ provided on the outer periphery of the insulating members 3 and 4.
and the second ground layer 9.

For the conductive members 1 and 0, in order to prevent gaps from forming when the insulating members 3 and 4 are connected, conductive paint is applied to the entire surface of each opposing surface, or conductive material in the form of foil is embedded in multiple sections. formed by.

The connection device in FIG. 2 includes first and second ground layers T.

9 are connected by the conductive member 10, the electric field in the microgap remaining between the groove 5 and the sealing member 6 is relaxed.

According to this invention, the groove provided on the opposing surface of the insulating member and into which the sealing member is mounted is covered with the second ground layer, and the first ground layer and the second ground layer provided on the outer periphery of the insulating member are covered. By configuring them to be connected by a conductive member, the electric field in the gap remaining in the mounting portion of the sealing member is alleviated.

This prevents partial discharge from occurring.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional connecting device, and FIG. 2 is a front view showing an embodiment of the invention. In the figure, 1, 2...conductor, 1a, 2a...
...Contactor, 3, 4...Insulating member, 5...
...Groove, 6... Sealing member, γ...
First ground layer, 9...Second ground layer, 10...
...It is a conductive member. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (2)

[Scope of utility model registration request] (1) Each outer periphery of a pair of conductors forming a current-carrying connection portion by a contact provided at one end is surrounded by an insulating member made of a curable resin, a first ground layer is provided on the outer periphery of the insulating member, and the above-mentioned A current-carrying contact portion is formed by the connection of both liquid contactors, and a predetermined groove is provided on each of the facing surfaces of both paper edge members. A conductor connection device characterized in that the conductor is covered with a second ground layer and a conductive member is used to connect the two ground layers. (2) The conductor connection device according to claim 1, wherein the conductive member completely covers the opposing surface of the insulating member.