Insulation processing process for high-voltage motor group braided wire

A processing method and high-voltage technology, applied in the direction of electric components, manufacturing motor generators, electrical components, etc., can solve problems such as unreasonable design structure, hidden dangers of production safety, long running time, etc., to eliminate inter-stock short circuit, improve Effects of improved service life and power generation efficiency

Inactive Publication Date: 2010-02-17
TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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Problems solved by technology

[0002] At present, the design structure of the bar-shaped wire rod of the high-voltage motor transformation unit is straight line to the end 2 / 3 of the knitting and transposition, and the wire gauge adopts bare copper wire and double glass fiber-coated flat copper wire (SBEB-40 / 155) alternately interlaced Arranging the wires for braiding and transposition, this design structure is unreasonable, resulting in inter-share short circuit at the braiding transposition during the operation of the whole unit. After a long operation time, it is easy to burn the motor, and the coil needs to be replaced when the unit is scrapped. Safety hazards and other technical issues

Method used

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  • Insulation processing process for high-voltage motor group braided wire

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Embodiment

[0017] Reference attached figure 1 .

[0018] A high-voltage motor unit strand insulation processing method. The insulation process is connected with the wiring, bending, weaving and transposition and inter-strand gluing processes. The characteristic is that the motor stator bar adopts a 360° transposition method from the straight line to the end. The wire rod copper wire strand insulation adopts a double polyester glass fiber wrapped sintered copper rectangular wire structure. The insulation thickness of the strands of the double polyester glass fiber coated sintered copper rectangular wire is 0.2mm. A layer of soft mica sheet is added at the linear corners of the stator bar to increase the insulation strength of the end. The main insulation adopts high-strength grade F copper horse powder mica tape with continuous insulation and anti-corona structure, and the main insulation is molded into ground at one time.

[0019] Take 32000KW retrofit unit as an example:

[0020] The wire ...

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Abstract

The invention relates to an insulation processing method for a high-voltage motor group braided wire, belonging to the technical field of motors. The insulation processing method for the high-voltagemotor group braided wire sequentially comprises an insulation working procedure jointing with the working procedures of wiring, bending, wire transposition and intrabundle gelling. The insulation processing method for the high-voltage motor group braided wire is characterized by adopting a transposition way of 360 degrees from a motor stator wire rod line to the end part, and a stator wire rod copper lead braided wire adopts a structure of double-terylene glass yarn pocket covering and sintering a sintered copper flat wire structure for insulation. The invention has the advantages of simple process, small insulation thickness, high puncture strength and low manufacture cost of the braided wire, favorable machine unit running effect, and the like and can prevent a wire rod intrabundle shortcircuit and improve the insulation quality of the stator wire rod braided wire.

Description

Technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a method for processing high-voltage motor unit strand insulation. Background technique [0002] At present, the design structure of the strip bar of the high-voltage motor transformation unit is straight to the end 2 / 3 of the knitting and transposition, and the wire gauge adopts the bare copper wire and the double glass fiber covered rectangular copper wire (SBEB-40 / 155). The arranging wire is arranged and transposed. This design structure is unreasonable, resulting in a short circuit between the strands during the operation of the entire unit. The long running time will easily cause the motor to be burned. The unit is scrapped and the coil needs to be replaced. Technical issues such as security risks. Summary of the invention [0003] In order to solve the technical problems existing in the known technology, the present invention provides a method for insulating the stran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00
Inventor 路春玲李效革张俊新
Owner TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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