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Strain clamp for large-section lead

A technology of tension-resistant clamp and large cross-section, which is applied in the direction of adjusting/maintaining mechanical tension, which can solve the problems of wires not getting grip force, etc., and achieve the effects of mature crimping process, easy crimping quality and simple structure

Active Publication Date: 2015-04-29
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 2 As shown, the traditional strain clamp does not have an aluminum liner, and the strain-resistant aluminum tube 8 is directly crimped to the wire 1, and the inner layer of the wire with a four-layer structure and the adjacent inner layer wire cannot get a good grip.

Method used

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  • Strain clamp for large-section lead
  • Strain clamp for large-section lead
  • Strain clamp for large-section lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the four-layer aluminum wire steel-cored aluminum stranded wire is a kind of large-section wire, and the wire 1 of the present invention is this kind of large-section wire 1: including a steel core 2, and the outside of the steel core 2 is covered in order from the inside to the outside. There are inner layer aluminum wires 3, adjacent inner layer aluminum wires 4, adjacent outer layer aluminum wires 5, and outer layer aluminum wires 6.

[0031] Such as image 3 As shown, the tensile clamp for large cross-section conductors in this example mainly includes a tensile steel anchor 7, a tensile aluminum tube 8, a drain clamp 9 and an aluminum liner 11. The upper part of the drain clamp 9 uses a connecting bolt It is connected with the deflector 12 on the tensile aluminum tube 8, and a tensile jumper 10 is crimped at the bottom of the tensile aluminum tube 8 to transmit current. The tensile steel anchor 7 is connected to the rear end of the tensile alu...

Embodiment 2

[0042] The structure and connection mode of the strain clamp described in this example are basically the same as that of Example 1, except that:

[0043] Such as Figure 4 As shown, a section of aluminum liner 11 is also provided in the tensile aluminum tube 8. The aluminum liner is simultaneously sleeved on the steel tube 73 of the tensile steel anchor 7 and the adjacent outer aluminum wire 5 and the outer aluminum wire 5 and The part of the outer aluminum wire 6 is adjacent to the inner aluminum wire 4 (that is, the aluminum liner simultaneously holds the large cross-section wire adjacent to the inner aluminum wire 4 and the steel pipe of the tensile steel anchor 7).

[0044] Such as Figure 8 As shown, the structure of the aluminum liner can be as Figure 8 The integrally formed round tube shown in a, 8b can also be like Figure 8 c. 8d shows a round tube formed by splicing two semicircular tubes. The length of the aluminum liner 11 is the length of the steel pipe 73 plus 3-4 tim...

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Abstract

The invention provides a strain clamp by which a pole tower for erecting a power transmission line and a transformer station is connected with a large-section lead. By cutting off an outer-layer aluminum wire and an adjacent outer-layer aluminum wire with a certain length and replacing and filling by an aluminum pipe with equal inner diameter and outer diameter, and a strain clamp aluminum pipe is pressed and welded on a filling aluminum pipe and the outer-layer aluminum wire of the uncut part when pressed and welded. The invention ensures the safety and the reliability of the press and welding, is suitable for the large-section lead, stably and effectively holds the large-section lead in a way of mounting a lining pipe and has simple structure and stable and reliable construction process.

Description

Technical field [0001] The invention belongs to the field of power system fittings, and in particular relates to a strain clamp for connecting large cross-section conductors on overhead power transmission lines and substation towers. It is suitable for large cross-section conductors and can stably and effectively hold and support the large cross-section conductors by installing a liner. Sectional wire. Background technique [0002] The wire strain clamp is a fitting to connect the wire to the strain insulator string. In addition to bearing the full tension of the wire, it also acts as a conductor to conduct current. It is an important fitting in the transmission line. The wire is one of the most important components of the transmission line. Due to the resistance of the wire, a certain amount of loss will occur during the transmission of electric energy. This part of the power loss is often ignored. In fact, the cost of this part of the loss is considerable. Therefore, appropriat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/02
Inventor 万建成刘臻牛海军李军辉
Owner CHINA ELECTRIC POWER RES INST
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