Method for prefabricating wrapping joint

A joint method and wrapping technology, which is applied in connection, assembly/disassembly of contact pieces, connection and connection through deformation, etc., can solve problems such as many faults, easy to generate heat, and increased dielectric loss, so as to achieve safe and reliable operation and not easy to break Good wear and resilience

Pending Publication Date: 2020-07-17
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the stress control tape is made of a material with a high dielectric constant, the dielectric constant of the material will change at different temperatures during the cable operation, which will lead to increased dielectric loss and easy heating, so there are many faults

Method used

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  • Method for prefabricating wrapping joint
  • Method for prefabricating wrapping joint
  • Method for prefabricating wrapping joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to better understand the technical solution of the present invention, the following will be described in detail through specific examples:

[0039] see figure 1 , The cable is copper shielding layer 1, insulating outer shielding layer 2, main insulating layer 3 and wire core 4 from outside to inside. According to the process requirements, the copper shielding layer 1 and the insulating outer shielding layer 2 are peeled off, and the main insulating layer 3 is peeled off to expose the wire core 4. Wherein the end of the stripped section of the main insulating layer 3 is stripped to form a tapered structure, and the length of the tapered structure is 50 cm.

[0040] see figure 2 , on the copper shielding layer 1 and insulating shielding layer 2 of the cable, a semi-conductive tape is wrapped to form a limit step 5, a prefabricated stress cone 6 is placed outside the main insulating layer, and a copper connecting pipe 7 is connected to the outer core of the wir...

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Abstract

The invention discloses a method for prefabricating a wrapping joint. Stripping the metal shielding layer and the insulating outer shielding layer; stripping and cutting the main insulating layer andexposing a cable core, wherein the metal shielding layer and the insulating outer shielding layer are wrapped with semiconductors; the main insulating layer is sleeved with a prefabricated stress cone; a cable core of the cable is crimped through a copper connecting pipe; the copper connecting pipe is wrapped with a semiconductive belt; the outer side of the structure is sequentially wrapped withan insulating belt, a semiconductive belt, a copper net, a PVC belt and a waterproof belt, and connection of the cables at the two ends is completed. Electrical connection between cables at the two ends can be achieved, and the electrical performance, stability and reliability of the connector cable are improved.

Description

technical field [0001] The invention relates to a prefabricated wrapping joint method used in the field of electric power engineering. Background technique [0002] In the process of cable laying, when the length of the cable is less than the length of laying, it is necessary to connect two or more sections of cables to form a joint cable for laying, so that the conductor cores of the cable are connected to form a continuous circuit. The joints of the joint cable are required to have a certain Excellent insulation and sealing performance, in line with electrical insulation performance, reasonable structure, adaptable to the environment and other requirements, the quality of joint construction is directly related to the stability of cable line operation. [0003] The current cross-linked cable method is the traditional wrapping method of oil-paper cable accessories, which uses insulating tape for additional winding insulation, and uses stress control tape at the semi-conducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/05H01R43/00H01R43/20H02G1/14
CPCH01R43/005H01R43/05H01R43/20H02G1/14
Inventor 吴爱军管必萍戴人杰李昂沈阳龚奕磊王世民陆鸣巫剑杨杰王艺翰王奕昌牛天尧汪紫凡
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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