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Novel cable intermediate joint

A technology for cable intermediate joints and cable joints, applied in cable joints, cable accessories, cable installation and other directions, can solve problems such as cable terminal explosion, insulation oil cracking, etc., and achieve the effect of solving the problem of uneven electric field.

Pending Publication Date: 2020-05-05
NANJING ZHIDA ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to partial discharge at the long-term stress cone of some cable terminals, the insulating oil (transformer oil) is cracked, resulting in the explosion of the entire cable terminal

Method used

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  • Novel cable intermediate joint
  • Novel cable intermediate joint
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 and figure 2 , a new type of cable intermediate connector of the present invention, the intermediate connector of the present invention is used for the connection between multiple cables, including a fixed insulation 2 and a grounding shell 7, two adjacent cables are connected through a cable connector 1 and then coaxially threaded Inside the fixed insulation 2 , the ground shell 7 is coaxially sleeved on the outside of the fixed insulation 2 .

[0020] Multi-layered cylindrical capacitive screens 21 arranged coaxially are arranged in the fixed insulation 2, and the innermost capacitive screen 21 is short-circuited with the cable joint 1, and the outermost capacitive screen 21 is grounded.

[0021] Both ends of the fixed insulation 2 are glued with metal flanges 3, and the metal flanges on each side include at least two flange bodies 31 arra...

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Abstract

The invention discloses a novel cable intermediate joint. A plurality of layers of coaxially arranged cylindrical capacitive screens are arranged in a fixed insulator. The innermost layer of capacitive screen is in short circuit with a cable joint, and the outermost layer of capacitive screen is grounded. Metal flanges are glued at two ends of the fixed insulator. The metal flange at each side atleast comprises two flange bodies arranged in parallel. A sealing ring is arranged between the flange body at the outermost side of each end of the fixed insulator and the cable at the corresponding end, and a sealing ring is arranged between the flange body at the innermost side and the fixed insulator at the corresponding end. A filling cavity is formed in the circumferential direction of the flange body on the innermost side in the metal flanges at each end, and insulating oil is poured into the filling cavity. A solidified sealing layer is poured between a grounding shell and the fixed insulator. According to the invention, the capacitive screens are arranged in the fixed insulator; the capacitive screens equalize an electric field; the metal flanges play a role in sealing and limitingthe cable; and the fixed insulator can thoroughly solve the problem that the electric field of an existing cable intermediate joint is uneven.

Description

Technical field: [0001] The invention relates to a novel cable intermediate joint. Background technique: [0002] With my country's modernization construction and the steady and rapid development of the economy, the electric power industry as a basic industry is bound to and has been developed by leaps and bounds. Especially with the acceleration of the modernization of urban construction and the continuous expansion to the surrounding areas and the reconstruction of old cities, the construction of urban power grids has developed extremely rapidly, and the application of power cables has become more and more extensive. In a sense, the universality of cable applications not only reflects It not only reflects the speed and depth of the development of the electric power industry, but also reflects the modernity of urban construction. [0003] With the development of the power industry, cables of various voltage levels have also appeared one after another. High-voltage power ca...

Claims

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Application Information

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IPC IPC(8): H02G15/18H02G15/184
CPCH02G15/18H02G15/184
Inventor 虞育号汪新泉冯彬
Owner NANJING ZHIDA ELECTRICAL EQUIP CO LTD
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