Balancing device and balancing method for dynamic balancing test before impeller over speed
A technology of impeller and trim, which is applied in the static/dynamic balance test, measuring device, machine/structural component test, etc. It can solve the problems of short service life, low efficiency of dynamic balance machine, long time for dynamic balance test and trim, etc., to achieve The effect of prolonged service life, short trimming time and high trimming efficiency
Active Publication Date: 2015-06-24
长沙赛尔透平机械有限公司
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Problems solved by technology
[0007] The purpose of the present invention is to provide a trim device and a trim method for the dynamic balance test of the impeller before overspeed, to solve the problem that the overlapping trim device cannot be continued after multiple de-weighting due to the method of directly removing the weight on the trim device. Use, dynamic balance test trimming time is long, low efficiency and short life of dynamic balancing machine
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[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0028] Such as figure 1 , 2 As shown in and 3, the trimming device used for the dynamic balance test before the impeller overspeed according to the embodiment of the present invention includes the impeller 2, the overspeed shaft 5 and the overspeed sleeve 1, and the overspeed sleeve 1 is stepped and has a large diameter section 8 and a small diameter section 9. The two overspeed sleeves 1 are arranged on the overspeed shaft 5 in such a way that the small diameter sections are opposite to fix the impeller 2 between the two overspeed sleeves 1, and the two overspeed sleeves 1 interfere with the overspeed shaft 5 Cooperate, the impeller 2 is interference fit with the small dia...
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The invention relates to the testing mechanical field, in particular to a balancing device and a balancing method for dynamic balancing test before impeller over speed. The balancing device comprises an impeller, an over speed shaft and over speed sleeves, wherein each over speed sleeve is of a footstep shape and is provided with a major diameter part and a minor diameter part, two over speed sleeves are arranged on the over speed shaft in a mode that the minor diameter parts are opposite to each other, thus the impeller is fixed between the two over speed sleeves, the two over speed sleeves and the over speed shaft are of interference fit, the impeller and the minor diameter parts of the two over speed sleeves are of interference fit, a balancing structure is arranged on the major diameter part, thus the balancing device can be reused after repeated tests, balancing time is short and balancing efficiency is high in the dynamic balancing test, and the service life of a dynamic balancing machine is prolonged.
Description
technical field [0001] The invention relates to the field of testing machinery, in particular to a trimming device and a trimming method used for the dynamic balance test before impeller overspeed. Background technique [0002] Before the centrifugal compressor impeller is fitted to the main shaft to form a rotor, a single impeller overspeed dynamic balance test at 115% of the rated speed for 2 minutes is required to release the stress generated by the impeller during processing. The size of the overspeed shaft of the impeller overspeed test device is fixed, and the journal is smaller than the impeller hole. Different impellers have different journals. In order to ensure that the impeller is fixed on the overspeed shaft and rotates with the overspeed shaft, it is necessary to design a transition sleeve or called overspeed. Sleeve for connecting impeller and overspeed shaft. [0003] In the prior art, when the impeller and the overspeed sleeve are set together and the impell...
Claims
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IPC IPC(8): G01M1/38
Inventor 田国光熊启凤彭乔明李勇
Owner 长沙赛尔透平机械有限公司