Search

CN-224233324-U - Insulating ring and intermediate joint

CN224233324UCN 224233324 UCN224233324 UCN 224233324UCN-224233324-U

Abstract

The utility model discloses an insulating ring and an intermediate joint. The insulating ring includes an insulator body, a first metal nest and a second metal nest. The insulator main body is of an annular structure, the first metal nesting body is provided with a first annular mounting part, the second metal nesting body is provided with a second annular mounting part, the second annular mounting part is provided with a second abutting surface facing the second surface and a second mounting surface deviating from the second surface, the second abutting surface is provided with a second annular jogged part protruding axially, and the second annular jogged part is correspondingly and tightly connected with the second groove. The utility model is obtained by nesting and combining the first metal nesting body, the second metal nesting body and the insulator main body, and the first metal nesting body, the second metal nesting body and the insulator main body form mechanical interlocking, so that the mechanical structural strength of connection is ensured, the safety of the insulating ring is improved, the installation cost is reduced, the production efficiency is improved, the operation is simple and convenient, and the safety and the reliability are improved.

Inventors

  • LIANG YIHENG
  • LI ZHEN
  • GAO CHENGHUA
  • DIAO YING

Assignees

  • 深圳市沃尔电力技术有限公司
  • 深圳市沃尔核材股份有限公司

Dates

Publication Date
20260512
Application Date
20250402

Claims (9)

  1. 1. An insulating collar, comprising: The insulator comprises an insulator main body (1), wherein the insulator main body (1) is of an annular structure, the insulator main body (1) comprises a first surface (11) and a second surface (12) which are perpendicular to the axial direction, a first groove (111) is formed in the first surface (11), and a second groove (121) is formed in the second surface (12); A first metal nest (2), wherein the first metal nest (2) is provided with a first annular mounting part (21), the first annular mounting part (21) is provided with a first abutting surface (212) facing the first surface (11) and a first mounting surface (213) facing away from the first surface (11), the first abutting surface (212) is provided with a first annular jogged part (22) protruding axially, and the first annular jogged part (22) is correspondingly and tightly connected with the first groove (111); The second metal nesting body (3), the second metal nesting body (3) is provided with a second annular installation part (31), the second annular installation part (31) is provided with a second abutting surface (312) facing the second surface (12) and a second installation surface (313) deviating from the second surface (12), the second abutting surface (312) is provided with a second annular jogged part (32) protruding axially, and the second annular jogged part (32) is correspondingly and tightly connected with the second groove (121).
  2. 2. An insulating ring according to claim 1, characterized in that the first face (11) and the second face (12) are annular faces, the annular faces of the first face (11) and the second face (12) being identical in annular width; the first abutting surface (212) and the first mounting surface (213) are annular surfaces, and the annular widths of the annular surfaces of the first abutting surface (212) and the first mounting surface (213) are the same; the second abutting surface (312) and the second mounting surface (313) are annular surfaces, and the annular widths of the annular surfaces of the second abutting surface (312) and the second mounting surface (313) are the same; the annular faces of the first face (11), the first abutting face (212) and the second abutting face (312) are identical in annular width.
  3. 3. An insulating collar according to claim 1, characterized in that the depth of the first recess (111) is smaller than the height of the insulator body (1); The depth of the second groove (121) is smaller than the height of the insulator body (1); the first groove (111) and the second groove (121) are arranged at intervals along the radial direction.
  4. 4. An insulation ring according to claim 1, characterized in that the insulator body (1) is an epoxy-based insulator.
  5. 5. Insulating ring according to claim 1, characterized in that the first mounting surface (213) of the first annular mounting portion (21) is provided with a plurality of first fixing holes (23), and the second mounting surface (313) of the second annular mounting portion (31) is provided with a plurality of second fixing holes (33).
  6. 6. Insulating ring according to claim 5, characterized in that the first fixing hole (23) and the second fixing hole (33) are blind threaded holes.
  7. 7. Insulating ring according to claim 6, characterized in that the diameter of the first fixing hole (23) and/or the second fixing hole (33) is 10mm-24mm.
  8. 8. Insulating collar according to claim 7, characterized in that the ratio of the thread depth to the thread aperture of the first fixing hole (23) and/or the second fixing hole (33) is 1.8:1 to 2.5:1.
  9. 9. An intermediate joint, characterized in that it comprises an insulating ring according to any one of claims 1-8, said first metal nest (2) and said second metal nest (3) being fixedly connected to a flange structure of an intermediate joint protection housing.

Description

Insulating ring and intermediate joint Technical Field The utility model relates to the technical field of safety protection of power equipment, in particular to an insulating ring and an intermediate joint. Background In an electrical power system, cable intermediate connectors are critical nodes that are prone to failure. The outer protective shell of the traditional intermediate joint is mostly made of pure epoxy resin insulating parts and is connected with the metal flange through threaded inserts. However, epoxy resin is used as a brittle material, and under the high impact load generated by short-circuit explosion, brittle fracture is easily caused at the threaded connection part due to stress concentration, so that insulation failure is caused, peripheral personnel and equipment are endangered, the toughness of the epoxy resin is enhanced, or the problem can be partially alleviated by adding a metal bushing, but the defects of complex process, high cost, reduced insulation performance and the like exist, so that a novel structure capable of not only keeping high insulation performance, but also remarkably improving the antiknock strength is needed. Disclosure of utility model The utility model discloses an insulating ring and an intermediate joint, and aims to provide an insulating ring with a reinforced structure, load impact resistance and good insulativity. In order to achieve the above purpose, the insulating ring provided by the utility model comprises an insulator main body, wherein the insulator main body is of an annular structure, the insulator main body comprises a first surface and a second surface which are perpendicular to the axial direction, the first surface is provided with a first groove, and the second surface is provided with a second groove; The first metal nesting body is provided with a first annular mounting part, the first annular mounting part is provided with a first abutting surface facing the first surface and a first mounting surface deviating from the first surface, the first abutting surface is provided with a first annular jogged part protruding axially, and the first annular jogged part is correspondingly and tightly connected with the first groove; the second metal nesting body is provided with a second annular mounting part, the second annular mounting part is provided with a second abutting surface facing the second surface and a second mounting surface deviating from the second surface, the second abutting surface is provided with a second annular jogged part protruding axially, and the second annular jogged part is correspondingly and tightly connected with the second groove. Preferably, the first surface and the second surface are annular surfaces, the annular widths of the annular surfaces of the first surface and the second surface are the same, the annular widths of the annular surfaces of the first abutting surface and the first mounting surface are the same, the annular widths of the annular surfaces of the second abutting surface and the second mounting surface are the same, and the annular widths of the annular surfaces of the first surface, the first abutting surface and the second abutting surface are the same. Preferably, the depth of the first groove is smaller than the height of the insulator main body, the depth of the second groove is smaller than the height of the insulator main body, and the first groove and the second groove are arranged at intervals in the radial direction. Preferably, the insulator body is an epoxy resin-based insulator. Preferably, the first mounting surface of the first annular mounting portion is provided with a plurality of first fixing holes, and the second mounting surface of the second annular mounting portion is provided with a plurality of second fixing holes. Preferably, the first fixing hole and the second fixing hole are threaded blind holes. Preferably, the diameter of the first fixing hole and/or the second fixing hole is 10mm-24mm. Preferably, the ratio of the thread depth to the thread aperture of the first and/or second fixing holes is 1.8:1 to 2.5:1. The utility model also provides an intermediate joint which comprises the insulating ring, wherein the first metal nesting body and the second metal nesting body are fixedly connected with the flange structure of the intermediate joint protection shell. The beneficial effects of the utility model are as follows: The utility model is obtained by combining the first metal nesting body, the second metal nesting body and the insulator main body nesting, the first metal nesting body is interlocked above the insulator main body, the first metal nesting body can prevent high impact load generated by short-circuit explosion above the insulator main body, has good structural strength, avoids brittle fracture caused by crack generated by stress concentration, and the second metal nesting body is interlocked below the insulator main body, has good structural strength, avoi