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Shielding type cable intermediate joint

A cable intermediate joint and shielding type technology, which is applied in the direction of cable accessories, cable installation, electrical components, etc., can solve the problems of lack of glue, easy glue passing, and poor shielding effect of distorted electric field.

Pending Publication Date: 2021-04-27
上海永锦电气技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conventional intermediate joint structure of cable accessories is composed of stress cones, shielding tubes, and insulating silicone rubber. There are transitional composites between stress cones and insulating silicone rubber, shielding tubes and insulating silicone rubber, especially at the stress cones and the curved surfaces of shielding tubes. , Poor process control, easy to over glue, lack of glue
In addition, in the actual installation and use of the joint, there are many faults caused by the installation misalignment of the stress cone shielding tube
The outer layer is compounded with conductive silicone rubber or sprayed with conductive paint, the effect of shielding the distorted electric field is not as good as that of metal shielding, and the mechanical strength is low

Method used

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  • Shielding type cable intermediate joint
  • Shielding type cable intermediate joint

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 , figure 2 In the described embodiment, a shielded cable intermediate joint includes a full inner layer stress control tube 1, an insulating silicone rubber layer 2 and a semiconductive silicone rubber layer 3, and the insulating silicone rubber layer 2 is placed in the full inner layer stress control tube On the outer surface of 1, a semiconductive silicone rubber layer 3 is placed on the outer surface of the insulating silicone rubber layer 2, and a number of metal wires 4 are arranged in the semiconductive silicone rubber layer 3. The shape of the full inner layer stress control tube 1 is a circular tube, and the full inner layer stress control tube 1 is made of stress control silicone rubber with high dielectric constant. The insulating silicone rubber layer 2 is made of composite insulating silicone rubber materi...

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Abstract

The invention discloses a shielding type cable intermediate joint. The joint comprises a full-inner-layer stress control tube, an insulating silicone rubber layer and a semi-conductive silicone rubber layer, the insulating silicone rubber layer is arranged on the outer side surface of the full-inner-layer stress control tube, the semi-conductive silicone rubber layer is arranged on the outer side surface of the insulating silicone rubber layer, and a plurality of metal wires are arranged in the semi-conductive silicone rubber layer. The intermediate joint has the beneficial effects that the capability of shielding a distorted electric field is enhanced, the mechanical strength is improved, the failure rate of the intermediate joint in the actual use process is reduced, the interface compounded by different materials is simplified, and the firmness degree is high.

Description

technical field [0001] The invention relates to the technical field related to cable connection, in particular to a shielded cable intermediate joint. Background technique [0002] The conventional intermediate joint structure of cable accessories is composed of stress cones, shielding tubes, and insulating silicone rubber. There are transitional composites between stress cones and insulating silicone rubber, shielding tubes and insulating silicone rubber, especially at the stress cones and the curved surfaces of shielding tubes. , The process control is not good, it is easy to over-glue and lack of glue. In addition, in the actual installation and use of the joint, there are many failures caused by the installation misalignment of the stress cone shielding tube. The outer layer is compounded with conductive silicone rubber or sprayed with conductive paint, the effect of shielding the distorted electric field is not as good as that of metal shielding, and the mechanical str...

Claims

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Application Information

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IPC IPC(8): H02G15/184H02G15/188
CPCH02G15/184H02G15/188
Inventor 柯德刚杜成龙叶仁永
Owner 上海永锦电气技术股份有限公司