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Matching structure for ensuring reliable contact of head portion of sleeve and carrying current

A matching structure and current-carrying technology, which is applied in the direction of connection, conductive connection, clamping/spring connection, etc., can solve the problems of affecting the operation safety, accelerating the aging of transformer oil and insulation, and increasing the contact resistance between threads, etc. The effects of overheating of the tube head, high structural reliability and reliable current carrying

Inactive Publication Date: 2016-07-13
AKSU POWER SUPPLY COMPANY STATE GRID XINJIANG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current-carrying thread has high requirements on the thread fit. Although various manufacturers have taken some measures to improve the current-carrying condition of the thread here, so far no structure is completely effective to solve this problem.
Poor thread fit will cause the contact resistance between threads to increase during operation, and the temperature will be too high, which will accelerate the aging of transformer oil and insulation in the bushing, shorten the service life of the bushing, and affect the safety of operation

Method used

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  • Matching structure for ensuring reliable contact of head portion of sleeve and carrying current
  • Matching structure for ensuring reliable contact of head portion of sleeve and carrying current

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 A matching structure to ensure reliable contact of the casing head with current carrying is shown, including a conductive head 1, a spring structure 2 and a lead joint 3, the lead joint 3 and the conductive head 1 are connected and carry current through a thread 5, and the spring structure 2 is For a single spring, a limiting groove 6 is provided on the upper part of the lead connector 3 , and the spring structure 2 is movably placed between the conductive head 1 and the lead connector 3 , and is limited by the limiting groove 6 . When the lead joint 3 is screwed into the conductive head 1 , the spring structure 2 is compressed, and the lead joint 3 and the conductive head 1 are tightly engaged by the force of the spring structure 2 at the thread 5 .

[0018] In the matching structure of this embodiment, both ends of the spring structure 2 are in conflicting contact, and the position is limited only by the limit groove 6. The advantage is that the struc...

Embodiment 2

[0020] Such as figure 2 The matching structure shown to ensure reliable contact of the bushing head with current carrying includes a conductive head 1, a spring structure 2 and a lead joint 3, the lead joint 3 and the conductive head 1 are connected and carry current through a thread 5, and the spring structure 2 is set Between the conductive head 1 and the lead joint 3, it includes a spring 22 and a fixed piece 21. The spring 22 is located below the fixed piece 21 and integrally formed with the fixed piece 21. The spring structure 2 is fixed on the conductive head 1 through a fastener 4 as a whole. on the inner surface. The fixing piece 21 and the conductive head 1 are also provided with a fixing hole 7 used in conjunction with the fastener 4 , preferably, the fastener 4 and the fixing hole 7 are threaded. When the lead joint 3 is screwed into the conductive head 1 , the spring structure 2 is compressed, and the lead joint 3 and the conductive head 1 are tightly engaged by ...

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Abstract

The invention discloses a matching structure for ensuring the reliable contact of the head portion of a sleeve and carrying current.The matching structure comprises a spring structure, a conductive head and a lead connector.The spring structure can be movably put between the conductive head and the lead connector and limited by a lead connector limiting groove, the spring structure can also be connected with the conductive head, the lead connector and the conductive head are connected with the carrying current through threads, the spring structure is compressed when the lead connector is screwed in the conductive head, and the lead connector and the conductive head are matched through the threads and closely meshed under the acting force of the spring structure.The lead connector and the conductive head are closely meshed at the matching positions of the threads, the reliable carrying current at the matching positions of the threads is ensured, and the phenomenon that since the matching thread of the head portion of the sleeve is poor in contact, the head portion of the sleeve is too hot can be effectively solved.

Description

technical field [0001] The invention relates to the field of transformer accessories, in particular to a matching structure for ensuring reliable contact of the bushing head with current carrying. Background technique [0002] Transformer bushings with a current level of 1250A and below generally use a cable-through structure. The cable-through structure is convenient for the bushing to be installed on site. The transformer does not need to open the installation hand hole. The head of the tube needs to be sealed with a conductive head (commonly known as a general's cap), so the industry generally uses threaded fittings for the conductive head and the lead connector to carry current. [0003] The current-carrying thread has high requirements on the thread fit. Although various manufacturers have taken some measures to improve the current-carrying condition of the thread, so far there is no structure that is completely effective to solve this problem. Poor thread fit will cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/32H01F27/29H01R4/48H01R4/56
CPCH01F27/324H01F27/29H01R4/4863H01R4/56H01R2201/22
Inventor 王柯郑义吴治勇张洪军张凯华李凯琳霍佑军杨计强虞育号汪新泉冯彬
Owner AKSU POWER SUPPLY COMPANY STATE GRID XINJIANG ELECTRIC POWER
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