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Straight line solidification process for large-capacity air-cooled turbogenerator stator bars

A steam turbine generator and stator wire rod technology, which is used in the manufacture of stator/rotor bodies, etc., can solve the problems of affecting the effect of linear curing, uneven glue penetration, low work efficiency, etc., so as to shorten the production cycle and improve the production efficiency. , the effect of uniform pressure

Active Publication Date: 2011-04-06
SHANDONG QILU ELECTRIC MOTOR MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure is realized by pressing the iron with bolts. The pressure has a lot to do with the operator, and the time of pressing each part is sequential, which will easily cause uneven penetration of the glue and affect the effect of linear curing.
In addition, because the paint needs to be fully dried before curing or after painting to cover the release tape, the process is complicated and the work efficiency is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: The linear solidification process of the stator bar of the large-capacity air-cooled turbogenerator includes the following steps:

[0023] 1). According to the requirements of the drawing, put the insulation between the rows along the length of the slot, that is, the length of the stator core slot, and use 1 / 3 of the release tape to wrap, that is, overlap 1 / 3 of the bandwidth when wrapping the tape;

[0024] 2). Put the stator bar into the linear curing mold;

[0025] 3). Pressurize 2N / mm on the wide surface of the stator bar 2 , Narrow surface pressure 3N / mm 2 ;

[0026] 4). Use a heating plate to heat the stator bar, start heating from room temperature, and perform the following operations according to the temperature value;

[0027] 5). When the temperature is 90°C, keep warm for 5 minutes, and pressurize the wide surface of the wire rod to 8N / mm 2 , pressurize the narrow side of the wire rod to 9N / mm 2 ;

[0028] 6). When the temperature is 130°C...

Embodiment 2

[0037] Embodiment 2: Different from Embodiment 1:

[0038] 3). Pressurize 3N / mm on the wide surface of the stator bar 2 , Narrow surface pressure 4N / mm 2 ;

[0039] 5). When the temperature is 90°C, keep warm for 5 minutes, and pressurize the wide surface of the wire rod to 9N / mm 2 , to pressurize the narrow side of the wire rod to 10N / mm 2 ;

[0040] 6). When the temperature is 130°C, pressurize the wide surface of the wire rod to 11N / mm 2 , pressurize the narrow side of the wire rod to 13.5N / mm 2 ;

[0041] The rest are the same and will not be repeated here.

Embodiment 3

[0042] Embodiment 3: Different from Embodiment 1:

[0043] 3). Pressurize 4N / mm on the wide surface of the stator bar 2 , Narrow surface pressure 5N / mm 2 ;

[0044] 5). When the temperature is 90°C, keep warm for 5 minutes, and pressurize the wide surface of the wire rod by 10N / mm 2 , pressurize the narrow side of the wire rod to 11N / mm 2 ;

[0045] 6). When the temperature is 130°C, pressurize the wide surface of the wire rod to 12N / mm 2 , pressurize the narrow side of the wire rod to 14N / mm 2 ;

[0046] The rest are the same and will not be repeated here.

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PUM

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Abstract

The invention relates to a straight line solidification process for large-capacity air-cooled turbogenerator stator bars. The process comprises the following steps: 1) putting in inter-row insulation along the length of a groove part and performing 1 / 3 stacked packing by use of a demolding tape; 2) putting a stator bar into a linear curing mold; 3) pressurizing the wide surface and the narrow surface of the stator bar respectively; 4) using a heating plate to heat the stator bar; 5) pressurizing the wide surface and the narrow surface of the stator bar respectively; 6) preserving heat; 7) reducing temperature, demolding and clearing; and 8) detecting inter-strand insulation and checking the size of the section of the groove part of the stator bar. The process ensures that all parts of thestator bar are under pressure at the same time so as to ensure more uniform pressure and more accurate pressure adjustment. Appropriate pressure, temperature, time and other parameters are set so as to ensure mutual adhesion of strands and no inter-strand short circuit caused by too strong pressure in the processes of pressurizing and heating. No immersion painting or brush painting is needed before curing, so that the process has the advantages of reducing the labor intensity of operators, shortening production cycle and improving production efficiency.

Description

technical field [0001] The invention relates to a linear solidification process of a stator wire rod, in particular to a linear solidification process of a stator wire rod of a large-capacity air-cooled turbogenerator. Background technique [0002] The existing method for straight-line solidification of stator wire rods of air-cooled turbogenerators is: after the strands are dipped or painted and wrapped with a release tape, they are placed on a forming mold to be heated and pressurized to solidify the strands together. The pressure is realized by pressing the iron with bolts. The pressure has a lot to do with the operator, and the time of pressing each part is sequential, which may easily cause uneven penetration of the glue and affect the effect of linear curing. In addition, because the paint needs to be fully dried before curing or after painting to cover the release tape, the process is complicated and the work efficiency is not high. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02
Inventor 卢启杰魏景生陈楠
Owner SHANDONG QILU ELECTRIC MOTOR MFG
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