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Technical method for checking corrugated plate tightness of hydro-generator stator

A technology of a hydro-generator and a process method, which is applied in the manufacture of motor-generators, electrical components, electromechanical devices, etc., can solve the problems of large vibration of the unit, easy loosening of slot wedges, and inability to detect comprehensively, so as to improve installation efficiency and improve The effect of measuring accuracy and saving installation time

Inactive Publication Date: 2017-11-14
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, the inspection process for the tightness of the corrugated plate of the stator of the hydro-generator was to use a small hammer of 0.5kg to hit the sound of the slot wedge. The method is limited by human factors, and the local wedge is not tightened, so it is impossible to detect comprehensively
During the operation of the unit, the slot wedge is easy to loosen, and the unit vibrates greatly

Method used

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  • Technical method for checking corrugated plate tightness of hydro-generator stator
  • Technical method for checking corrugated plate tightness of hydro-generator stator

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Embodiment Construction

[0008] Such as figure 1 A method for inspecting the tightness of the stator corrugated plate of a hydroelectric generator is shown, which consists of a stator corrugated plate tightness measuring device composed of stator wire rods, main slot wedges, auxiliary slot wedges, a corrugated plate tightness inspection sample, and pad strips under the wedges , place multiple under-wedge pads on the straight section of the stator bar, put the main slot wedge, auxiliary slot wedge and the corrugated plate tightness inspection sample into the stator bar together, and the auxiliary slot wedges are placed on the corrugated plate tightness inspection sample and Between the main slot wedges, tighten the auxiliary slot wedges with the main slot wedges with a slot wedge tool, measure and control the exposed length of the auxiliary slot wedges L=100~125mm, measure the actual thickness of the pad under the wedges, at this time the slot wedges The thickness of the lower pad meets the installatio...

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Abstract

The invention is composed of a stator bar (1), a main slot wedge (2), a secondary slot wedge (3), a corrugated plate tightness check sample (4) and a cushion strip under wedge (5), wherein the cushion strip under wedge in proper thickness is placed on a linear section of the stator bar (1); the main slot wedge (2), the secondary slot wedge (3) and the corrugated plate tightness check sample (4) are placed into a slot; the secondary slot wedge (3) is located between the corrugated plate tightness check sample (4) and the main slot wedge (2); a slot wedge processing tool is used for tightening the secondary slot wedge (3), the exposing length of the secondary slot wedge (3) is measured as L=100-125mm and a vernier caliper is used for measuring the practical thickness of the cushion strip under wedge (5), and meanwhile, the cushion strip under wedge (5) in the slot meets a mounting requirement, a depth meter is used for measuring the compression amount of a corrugated plate and the radial height of the corrugated plate (6) is 1.25-1.40mm. According to the invention, the measurement accuracy of the compression amount of the corrugated plate is greatly increased, the operation is simple and convenient and the efficiency is high, so that the mounting period is saved.

Description

Technical field: [0001] The invention relates to a process method for inspecting the tightness of corrugated plates of a hydroelectric generator stator. Background technique: [0002] In the past, the inspection process for the tightness of the corrugated plate of the stator of the hydro-generator was to use a small hammer of 0.5kg to hit the sound of the slot wedge. The method is limited by human factors, and the local wedge is not tightened, so it cannot be fully detected. During the operation of the unit, the slot wedge is easy to loosen and the unit vibrates greatly. Invention content: [0003] The invention relates to a process method for inspecting the tightness of a corrugated plate of a stator of a water turbine generator, which is a process method for inspecting the tightness of a corrugated plate of a stator of a water turbine generator with accurate measurement, simple operation and high efficiency. The technical solution of the present invention is: a process...

Claims

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Application Information

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IPC IPC(8): H02K15/00
CPCH02K15/00
Inventor 赵海军王新洪
Owner HARBIN ELECTRIC MASCH CO LTD
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