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4500kw exciting dynamo rotor armature core hot cover process

A technology of armature core and shrink sleeve process, which is applied in the manufacture of stator/rotor body, etc., which can solve the problems of scrapped shaft, economic loss, scrapped armature, etc.

Active Publication Date: 2011-01-26
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The heat sleeve of the armature plays a very important role in the manufacturing process of the whole exciter. Since the armature coil has been installed during the heat sleeve, the heating temperature must be strictly controlled below 180°C, otherwise the coil will be damaged. Therefore, the process gap of the armature shrink fitting is very small, and the shrink fitting time will be very short, which requires the armature shrink fitting to the corresponding part of the rotating shaft in a short time. If there is any accident, it will not only bring huge economic losses, but also It will also have a great impact on the entire product production cycle
Because once the armature heat sleeve fails, either the entire armature or the entire shaft will be scrapped, and only one of the two can be chosen.

Method used

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  • 4500kw exciting dynamo rotor armature core hot cover process
  • 4500kw exciting dynamo rotor armature core hot cover process
  • 4500kw exciting dynamo rotor armature core hot cover process

Examples

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Embodiment

[0030] A 4500kw exciter rotor armature core shrink-fit process is characterized in that the process steps are as follows:

[0031] The first step: machining the inner circle of the armature core:

[0032] The inner circle of the armature core 7 is bored by a CNC boring machine with a diameter of Φ260mm, and then the armature core 7 is placed on the two V-shaped irons. The axial position is calibrated with the 3-point method of the dial indicator. The inner circle of the pivot core 7 minimizes the flanging of the core during processing;

[0033] Step 2. Preparation before armature core heating:

[0034] Such as figure 1 As shown, it is a schematic diagram of putting the armature core into the heating bracket. After cleaning the armature core 7, make a shrink mark on the inside and outside of the armature core 7, wrap asbestos cloth on the entire outer circle of the armature core 7, and put the transition washer 5 and the tool hanging plate 2 with the handle 3 are fixed on th...

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Abstract

The present invention relates to a heating jacket technique of 4500kw exciting machine rotor armature core, which is characterized in that the present invention has the technical measures such as accurately controlling the size of the component, concentricity and verticality when in processing, moreover, the heat preservation and the shrinking method of the shaft, realizing the armature core heating jacket on the safe side. The invention has the advantages of satisfying the 4500kw exciting machine rotor armature core heating jacket technic of the 1000MW stages steam turbine generator.

Description

technical field [0001] The invention relates to a 4500kw exciter rotor armature core shrink-fit process, which can be used in the manufacture of a 1000MW steam turbine generator exciter rotor and belongs to the technical field of steam turbine generators. Background technique [0002] The 4500kw exciter is the supporting exciter for the 1000MW turbo-generator. With the increase of the capacity of the turbo-generator, the requirements for the withstand voltage and reliability of the rotor core and the rotor coil, the heart part of the exciter, are getting higher and higher. Therefore, it needs to be dipped in VPI as a whole. In order to make use of the smaller immersion equipment as much as possible to reduce equipment investment, it is necessary to perform VPI immersion before the rotor core and coil are assembled into an "armature" but before being shrunk onto the shaft. [0003] The heat sleeve of the armature plays a very important role in the manufacturing process of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02
Inventor 周振福袁建华王庭山夏鲜良陈德华
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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