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Insulated pipe type bus production method

A production method and technology of insulating tubes, which are applied in the manufacture of electrical components, circuits, cables/conductors, etc., can solve the problems of easy occurrence of micropores, breakdown, and partial discharge effects, so as to reduce the generation of micropores and eliminate the occurrence of micropores. Foaming, good compacting effect

Active Publication Date: 2015-09-09
JIANGSU WONEN ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of this method, it is easy to have defects such as micropores, breakdown, and impact on partial discharge.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The production method of the insulating tubular busbar of the present invention comprises the following steps:

[0021] The first step, tape winding: first, take a metal tube-shaped conductor, have a grease injection port and an exhaust port at both ends of the conductor, and wrap a layer of glass fiber cloth tape on the surface of the conductor. In this embodiment, the conductor may be a copper conductor or an aluminum conductor.

[0022] The second step, wrapping: put a heat-shrinkable sleeve on the outer wall of the conductor wrapped with cloth tape, use a drying gun to heat the heat-shrinkable sleeve to make it shrink, and then install the heat-shrinkable sleeve and the conductor Vacuumize the space so that the heat-shrinkable sleeve is tightly attached to the outer wall of the conductor. In this embodiment, the heat-shrinkable sleeve can be a type of ZRRAXSLEEVESBI300 / 350 heat-shrinkable sleeve.

[0023] The third step, grease injection: under the vacuum state of...

Embodiment 2

[0030] The production method of the insulating tubular busbar of the present invention comprises the following steps:

[0031] The first step, tape winding: first, take a metal tube-shaped conductor, have a grease injection port and an exhaust port at both ends of the conductor, and wrap a layer of glass fiber cloth tape on the surface of the conductor. In this embodiment, the conductor may be a copper conductor or an aluminum conductor.

[0032] The second step, wrapping: put a heat-shrinkable sleeve on the outer wall of the conductor wrapped with cloth tape, use a drying gun to heat the heat-shrinkable sleeve to make it shrink, and then install the heat-shrinkable sleeve and the conductor Vacuumize the space so that the heat-shrinkable sleeve is tightly attached to the outer wall of the conductor. In this embodiment, the heat-shrinkable sleeve can be a type of ZRRAXSLEEVESBI300 / 350 heat-shrinkable sleeve.

[0033] The third step, grease injection: under the vacuum state of...

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Abstract

The present invention relates to an insulated pipe type bus production method which comprises a step of taking a metal tube conductor and winding a layer of glass fiber cloth belt around the surface of the conductor, a step of sleeving the conductor with a heat-shrinkable sleeve pipe, carrying out vacuum pumping processing on the space between the heat-shrinkable sleeve pipe and the conductor and pouring epoxy resin into the cavity between the heat-shrinkable sleeve pipe and the conductor from the resin poring port on the conductor until the resin is full, a step of curing the epoxy resin, a step of winding a layer of shielding copper tape around the outer side wall of the heat-shrinkable sleeve pipe, and a step of packaging an insulating sheath around the outer side wall of the shielding copper tape layer to obtain the prepared product. The method has the advantages that when the used is used to make an insulated pipe type bus, the heat-shrinkable sleeve pipe is added, firstly the vacuum pumping processing is carried out, then the epoxy resin is poured and the drying is carried out, by using the characteristic that the heat-shrinkable sleeve pipe shrinks in the condition of heating, redundant epoxy resin and air are discharged, through the processing method, the generation of pores can be effectively reduced, and a breakdown phenomenon is avoided.

Description

technical field [0001] The invention relates to the field of manufacturing insulating tubular busbars, in particular to a production method for insulating tubular busbars. Background technique [0002] With the rapid development of my country's economy, the demand for electricity in the whole society is increasing day by day. At present, the low-voltage side of 110kV and 220KV substations adopts 10kV and 35kV voltage levels. With the increase of the main transformer capacity, the rated current of the incoming line side of the low-voltage side of the transformer is also increasing. Conventional rectangular bus bars are technically and structurally more and more difficult to meet the requirements of bus heating and short-circuit electromotive force, which will cause additional loss and increase of skin effect coefficient, resulting in a decrease in interception capacity and uneven current distribution. Especially when the capacity of a single main transformer is 180MVA an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00
Inventor 张小兵田塨
Owner JIANGSU WONEN ELECTRIC TECH
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