Reciprocating compressor crankshaft reliability optimization design method

A technology of compressor crankshaft and optimization design, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of not considering the change of the crankshaft load, no interaction of the cranks, and simplification.

Active Publication Date: 2013-11-20
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology

There are also some documents on three-dimensional finite element analysis of crankshafts in academic conferences and journals at home and abroad, which have played a role in promoting the application of finite element method in the study of crankshaft strength, but these works also have some shortcomings, such as: some The calculation model only considers a single load situation, ignoring the torque and inertial force; some on

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  • Reciprocating compressor crankshaft reliability optimization design method
  • Reciprocating compressor crankshaft reliability optimization design method
  • Reciprocating compressor crankshaft reliability optimization design method

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Embodiment Construction

[0067] For ease of understanding, the specific workflow and principles of the present invention are further described below in conjunction with the accompanying drawings:

[0068] 1 Dynamic analysis of the crank-link mechanism

[0069] The main content involved in the dynamic analysis of the crank connecting rod mechanism is to analyze the motion law and force of the crank connecting rod mechanism of the compressor, which will provide the basis for the finite element analysis of the crankshaft later.

[0070] 1..1 Kinematic relationship of crank linkage mechanism

[0071] The working principle of the reciprocating piston compressor is mainly to convert the rotary motion of the prime mover into the reciprocating motion of the compressor piston by using the crank connecting rod mechanism. When analyzing the work of the crank connecting rod mechanism, in fact, the angular velocity is a variable due to the uneven torque. When studying the torsional vibration of the crankshaft and...

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Abstract

The invention belongs to the field of structure optimization design for components of compressors, and particularly relates to a reciprocating compressor crankshaft reliability optimization design method. The reciprocating compressor crankshaft reliability optimization design method includes steps of performing three-dimensional modeling, meshing to generate finite element modules, obtaining crankshaft stress values on discrete working conditions, calculating stress strain distribution of a crankshaft on the discrete working conditions by the aid of finite element modules, determining dangerous working conditions and dangerous nodes of the crankshaft, obtaining the stress values of the dangerous nodes on different discrete working conditions, checking fatigue strength of the different dangerous nodes, analyzing the finite element modal of the crankshaft to obtain natural vibration mode and natural frequency of the crankshaft, and finally judging whether resonance exists between frequency of exciting force and the natural frequency or not. The reciprocating compressor crankshaft reliability optimization design method is easy to operate and implement, has effects of improving working reliability of the crankshaft practically, improving operation reliability of high-parameter compressors while having a high reference value to realize miniaturization and light weight on the premise of reliability guarantee.

Description

technical field [0001] The invention belongs to the field of structural optimization design of compressor parts, and in particular relates to a method of using SolidWorks software to establish a three-dimensional solid model of a crankshaft of a reciprocating compressor, and generate a finite element model from the three-dimensional solid model of the crankshaft to complete crankshaft strength analysis and crankshaft transition Reliability optimization design method for crankshafts of reciprocating compressors with rounded corners. Background technique [0002] The crankshaft is the main moving part of the reciprocating compressor, and its size parameters and performance directly affect the working reliability and life of the compressor. With the development of the compressor and the continuous improvement of the strengthening index, the working conditions of the crankshaft are more severe. The crankshaft is subjected to the periodically changing load caused by the gas press...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 鲍军张成彦钱则刚唐斌潘艺昌李金禄何明于洋张和平
Owner HEFEI GENERAL MACHINERY RES INST
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