Analysis method of load excitation test under start-up condition of rotary compressor of refrigeration equipment

Abstract

The invention discloses a load exciting test analytical method for a rotor compressor of refrigeration equipment under the starting working condition. The load exciting test analytical method is characterized in that amplitude-response curves on all measuring points in the rotor compressor of the refrigeration equipment are acquired through vibration testing of the rotor compressor of the refrigeration equipment under the starting working condition, so that a displacement matrix is formed; a finite element analysis method is used for establishing a virtual prototype model of the rotor compressor, the amplitude responses of all the measuring points are analyzed by the virtual prototype model under the action of pulsed excitation loads, and the peak load time and magnitude are obtained by inverse computation through vibration testing results of all the measuring points under the starting working condition of the rotor compressor in accordance with loading and the characteristic that the peak time difference of amplitude responses caused by loading is constant. By the adoption of the method, the tubing reliability assessment accuracy under the starting working condition is effectively improved, and the tubing failure occurrence rate is lowered.

Description

technical field [0001] The invention relates to a load excitation test analysis method under the start-up condition of the rotor compressor of the refrigeration equipment, which is used for the reliability evaluation of the piping structure under the condition. Background technique [0002] For refrigeration equipment using rotary compressors, a "Rotary Compressor Load Test and Analysis Method for Refrigeration Equipment" is described in the invention patent publication with the patent number CN102562568B. This method is aimed at the load of the rotary compressor under stable conditions Excitation test analysis; in fact, for the refrigeration equipment using the rotary compressor, it will apply a strong instantaneous impact load to the piping and other components connected to it during the start-up process, causing the piping and other components to produce micro Cracks even directly fail, so far there is no public report on the load test analysis method for refrigeration eq...

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Problems solved by technology

[0002] For refrigeration equipment using rotary compressors, a "Rotary Compressor Load Test and Analysis Method for Refrigeration Equipment" is described in the invention patent publication with the patent number CN102562568B. This method is aimed at the load of the rotary compressor under stable conditions Excitation test analysis; in fact, for the refrigeration equipment using the rotary compressor, it will apply a strong instantaneous impact load to the piping and other components connected to it during the start-up process, causing the piping and other components to produce micro Cracks or even direct failure, so far there is no public report on the load test analysis method for refrigeration equipment under the start-up condition of the rotary compressor

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