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Method for repairing a stator

A stator and stator inner hole technology, which is applied in the manufacture of stator/rotor body, magnetic circuit shape/style/structure, manufacture of motor generators, etc., can solve the problems of time consumption and inapplicability of routine maintenance plans, etc.

Active Publication Date: 2014-12-10
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] De-lamination and re-lamination of steel plates is time consuming, making the time required for these operations unsuitable for routine maintenance programs

Method used

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  • Method for repairing a stator
  • Method for repairing a stator
  • Method for repairing a stator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 with figure 2 A stator 1 is shown comprising a plurality of steel plates lightly insulated from each other. The stator 1 has a substantially cylindrical shape and defines a stator bore 2 .

[0018] The stator 1 has an annular portion 3 from which fingers 4 extend. The fingers 4 define slots 5 for the stator conductors 6 .

[0019] The inner bore 2 has a substantially cylindrical central portion 7 and tapered end portions 8 . Due to the laminated structure of the stator, the tapered end 8 is a stepped tapered end (that is, the tapered surface has steps).

[0020] Pressure plates 9 are provided at the ends of the stator 1 .

[0021] Each pressure plate 9 has: a substantially annular portion 10 which rests on the annular portion 3 of the stator 1 ; and a finger 11 which extends from the annular portion 10 and rests on the finger 4 of the stator 1 .

[0022] The surface of the stator bore 2 may be damaged during manufacture or more often during maintenance ...

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PUM

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Abstract

The method for repairing a stator (1) having a damaged part comprises providing the stator (1) with a seat (15), removing the damaged part of the stator (1), connecting the inserts (16) replacing the damaged part of the stator (1) to the seat (15), fixing the inserts (16).

Description

technical field [0001] The present disclosure relates to methods for repairing stators. [0002] The stator is part of a rotating electrical machine, such as a synchronous generator to be connected to a gas or steam turbine (turbine generator), or a synchronous generator to be connected to a water turbine (hydrogenerator), or an asynchronous generator motors or synchronous or asynchronous motors, or in addition other types of motors. Background technique [0003] The stator is made of a plurality of steel sheets lightly insulated from each other (laminated structure) and defining an annular shape with a stator bore in which the rotor is accommodated. [0004] Axial slots open into the stator bore to accommodate the stator conductors. The stator conductors consist of copper rods with insulation which is so sensitive to temperature that the insulation performance degrades when the temperature increases beyond a predetermined value. [0005] The laminated structure prevents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00H02K15/02
CPCH02K15/024H02K15/0006Y10T29/49009H02K15/02H02K15/022H02K1/18
Inventor P.L.贾考洛特
Owner GENERAL ELECTRIC TECH GMBH