CN207069548U - Back-to-back type GIS high-voltage cable connecting devices are used in one kind experiment - Google Patents

Abstract

The utility model discloses a back-to-back GIS high-voltage cable connection device for testing. At present, domestic cable manufacturers or scientific research institutions have carried out a large number of high-voltage cable defect simulation tests. During the test, it is often necessary to replace the defective cable section, and the general test design does not take isolation measures to separate the defective cable section from the non-defective cable section. As a result, the workload of each replacement process is large, the cycle is long and the test materials are wasted. The utility model comprises a GIS warehouse body and two high-voltage cable terminals. The two high-voltage cable terminals are respectively inserted into the GIS warehouse body from both sides of the GIS warehouse body. Carry out fastening docking in the warehouse body. The utility model has an ingenious structure and is used for docking two high-voltage cable terminals. The docking part adopts a detachable structure, which can realize the isolation of defective cable segments for testing, facilitates replacement of defective cables during testing, saves costs, and improves testing efficiency.

Description

A back-to-back GIS high-voltage cable connection device for testing

technical field

The utility model relates to the field of high-voltage cable terminals, in particular to a back-to-back GIS high-voltage cable connection device for testing.

Background technique

With the widespread use of high-voltage cables in domestic power grids, due to the pressure of cable manufacturing quality and defect diagnosis, cable manufacturers and scientific research institutions need to carry out a large number of high-voltage cable defect simulation tests.

In the process of high-voltage cable defect simulation test, it is often necessary to replace the defective cable section, but the general test design does not take isolation measures to separate the defective cable section from the non-defective cable section, resulting in a large workload, long cycle and wasteful tests for each replacement process. Material.

When conducting high-voltage cable tests, most cable terminals adopt an open structure, and metal wires are generally used to connect the terminals. The open terminal is bulky and requires a high safety distance, resulting in a large laboratory space and high test costs. At the same time, after the test is completed, the defective cable section needs to be replaced. If an open cable terminal is used, the replacement workload will be heavy, the cycle will be long, and the replacement cost will be high.

Utility model content

The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art, and provide a back-to-back GIS high-voltage cable connection device, which is used to separate the defective cable section and the non-defective cable section in the high-voltage cable defect simulation test, so as to facilitate Replace defective cable segments during the test to save costs and improve test efficiency.

For this reason, the utility model adopts the following technical scheme: a back-to-back GIS high-voltage cable connection device for testing, including a GIS warehouse body and two high-voltage cable terminals, and the two high-voltage cable terminals are connected from both sides of the GIS warehouse body. They are respectively inserted into the GIS compartment, and the two conductor connecting shafts of the two high-voltage cable terminals adopt a detachable structure for fastening and docking in the GIS compartment.

The utility model adopts a detachable structure to fasten and butt the conductor connection shafts of two high-voltage cable terminals, which can realize the isolation of defective cable sections for testing, facilitate replacement of defective cables during testing, save costs, and improve testing efficiency.

As a supplement to the above technical solution, the detachable structure includes a hoop, at least two bolts and nuts corresponding to the number of bolts. Used to hold the hoop tightly on the conductor connection shaft. With this detachable structure, the defective cable section can be quickly disassembled and replaced during the test.

As a supplement to the above technical solution, the hoop is formed by joining together two metal splints, the two metal splints are in the shape of a semicircle, and the two ends of the two metal splints are bent outward to form a mounting ear, and a metal splint The mounting lug of one metal splint is connected with the corresponding mounting lug of another metal splint with bolts and nuts.

As a supplement to the above technical solution, a metal shield is installed on the outside of the detachable structure. The metal shielding cover is used to equalize the electric field at the junction of the conductor connection shafts, meeting the requirement of no background partial discharge during the test.

As a supplement to the above technical solution, the metal shield is in the shape of a cylinder.

The beneficial effects of the utility model are as follows: the utility model is a back-to-back GIS high-voltage cable connection device with ingenious structure and easy cable replacement. The docking part adopts a detachable structure, which can realize the isolation of defective cable sections for testing and facilitate the testing process Replacing defective cables during the process can greatly improve test efficiency and save test costs.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly and compare it with the technical solution of the background art, the accompanying drawings used in the embodiments of the utility model will be briefly introduced below. Apparently, the accompanying drawings of the embodiments of the utility model described below are only part of the embodiments, and those skilled in the art can obtain other drawings according to these drawings without creative work.

Fig. 1 shows a structural sectional view of the utility model;

Fig. 2 shows an exploded view of the structure of the utility model (the detachable structure is not installed);

Fig. 3 shows a schematic cross-sectional view of the detachable structure of the present invention.

In the figure, 1-GIS warehouse body, 2-conductor connecting shaft, 3-metal splint, 4-high voltage cable terminal, 5-cable section with defect, 6-cable section without defect, 7-metal shield, 8 -Hoop, 9-bolt, 10-nut.

Detailed ways

The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Obviously, the described embodiments of the utility model are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The back-to-back GIS high-voltage cable connection device shown in Figure 1-3 is composed of a GIS warehouse body 1 and two high-voltage cable terminals 4, and the two high-voltage cable terminals 4 are respectively inserted into the GIS from both sides of the GIS warehouse body 1 In the warehouse body 1, the two conductor connection shafts 2 of the two high-voltage cable terminals adopt a detachable structure for fastening and docking in the GIS warehouse body 1.

The detachable structure is composed of a hoop 8, four bolts 9 and four nuts 10, the hoop is hugged on the outer end of the connecting shaft of two conductors, and the bolts 9 and nuts 10 are used to connect the hoop 8 Hold onto the conductor connection shaft. The hoop 8 is formed by connecting two metal splints 3. The two metal splints 3 are in the shape of a semicircle. The two ends of the two metal splints are bent outward to form a mounting ear. The corresponding mounting ears of the other metal splint are butted with bolts 9 and nuts 10, which facilitates the removal and replacement of defective cable segments 5.

The outer side of the detachable structure is equipped with a cylindrical metal shielding cover 7, which is first set on the conductor connection of a high-voltage cable terminal.

On the connecting shaft, after the two cable terminals are connected, move the metal shield to the hoop and cover it outside the hoop.

Claims (5)

1. back-to-back type GIS high-voltage cable connecting devices, including a GIS warehouses (1) and two high-tension cable ends are used in one kind experiment Hold (4), it is characterised in that

Described two hv cable terminations (4) insert in GIS warehouses (1) respectively from the both sides of GIS warehouses (1), two high-tension cables Two conductor connecting shafts (2) of terminal carry out fastening docking using demountable structure in GIS warehouses (1).

2. back-to-back type GIS high-voltage cable connecting devices are used in experiment according to claim 1, it is characterised in that described Demountable structure includes an anchor ear (8), at least two bolts (9) and the nut corresponding with bolt quantity (10), and described embraces Bind round (8) to embrace on two conductor connecting shaft (2) outer ends, screw bolt and nut is used to hold anchor ear in conductor connecting shaft tightly.

3. back-to-back type GIS high-voltage cable connecting devices are used in experiment according to claim 2, it is characterised in that described Anchor ear (8) is formed by connecting by two metal splints (3) pairing, and two metal splints are in semi-annular shape, the both ends of two metal splints to One mounting ear of outer each formation of bending, the corresponding mounting ear of the mounting ear of a metal splint and another metal splint use bolt and Nut docks.

4. the experiment back-to-back type GIS high-voltage cable connecting devices according to claim any one of 1-3, its feature exist In the outside of the demountable structure is equipped with a metallic shield (7).

5. back-to-back type GIS high-voltage cable connecting devices are used in experiment according to claim 4, it is characterised in that described Metallic shield (7) is cylindrical.