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Detection method of corrugated plate

A detection method and corrugated plate technology, which are applied to measuring devices, using stable tension/pressure to test the strength of materials, instruments, etc., can solve the problems of unreliable coil fixation, reworked coil anti-corona layer, etc., to ensure the service life, Guarantee the effect of normal operation

Active Publication Date: 2011-08-17
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

In the past, epoxy glass cloth corrugated boards were imported materials and no incoming inspection was performed. However, whenever the motor was overhauled, it was always because the coil was not fixed firmly, and there were situations where it was necessary to repair the coil and repair the anti-corona layer.

Method used

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  • Detection method of corrugated plate
  • Detection method of corrugated plate

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Embodiment Construction

[0008] Such as figure 1 The present invention shown is a corrugated plate detection method, which is divided into five steps: A: permanent deformation test: according to the measured thickness of the sample corrugated plate, select the corrugated plate test on the two corrugated plates with the largest and smallest thickness. Take two pieces of corrugated plate samples. The size of the corrugated plate sample is (50±1)×(195±5) (mm). Each piece of corrugated plate sample should have five complete wave peaks. Or cutting beyond 5mm before the trough. When cutting the sample with a grinding wheel, the grinding wheel should be cooled with water, and the corrugated plate sample should be placed in an oven at 105±3°C for 24 hours, and then cooled to room temperature in a desiccator; Table test method, measure the peak value of the sample, take five peak points for each piece and mark them, the measurement accuracy is 0.01mm, put the corrugated plate sample between two flat plates, an...

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Abstract

The invention discloses a detection method of a corrugated plate. In the invention, the relevant data is obtained by a series of insulation performance analysis experiments, and an empirical value is compared by data process and data analysis, so as to obtain reasonable and scientific insulation performance evaluation of epoxy glass fabric corrugate plates. A detection method under a simulated reality condition is provided for checking the mechanical performance of the corrugated plate according to the wave peak size change of the corrugated plate. The detection method mainly aims at the mechanical stress and strain change of the epoxy glass fabric corrugate plates, so that the service life of coils and the normal running of motors are ensured.

Description

technical field [0001] The invention relates to a corrugated board detection method. Background technique [0002] Epoxy glass cloth corrugated board is a very important insulating material in the stator slot. The corrugated plate plays the role of shockproof, vibration reduction and fastening for the coil. Therefore, the mechanical performance of the corrugated plate directly affects the service life of the stator coil. In the past, corrugated board materials were imported from abroad, and there were no professional, systematic and effective testing methods in China. Under normal operating conditions, the stator coil generally has a service life of 30 years. Once the mechanical properties of the corrugated plate are not good enough, there will be movement between the coil and the groove, thereby damaging the main insulation part of the coil. Damaged insulation parts cause insulation aging under changes in electrical stress, mechanical stress, and chemical stress, result...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/00
Inventor 倪苗苗张大鹏黄玉周洋孙铎
Owner HARBIN ELECTRIC MASCH CO LTD
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