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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
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No.9 Gaoguannong,Daxue Road,Hangzhou,China
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310009
E-mail:
meem_contribute@163.com
Abstract: Aiming at the problem of the wear and burn failure rate rise of the connecting rod after the intake flow regulating system was adopted in the reciprocating compressor, the lubrication characteristics of the connecting rod bearing bush under the flow regulating conditions were studied by taking a 2D20 compressor as an example. Firstly, the force of the transmission mechanism in the process of piston movement was analyzed, and the compressor dynamic model including the lubricating oil film of the connecting rod bearing bush was built based on the compressor thermodynamic cycles. Then, RecurDyn software was used to simulate the kinematics and dynamics of the transmission mechanism, and the influence of different flow loads on the mechanical characteristics of the piston rod was studied. Finally, the influence of 10%~100% flow regulation load on the oil film lubrication characteristics of connecting rod bearings was quantitatively analyzed. The research results indicate that the reverse direction of the horizontal position of the cross-head pin and the bearing bush has a significant lag compared with the reverse direction of the applied force, and the lubrication effect of both sides of the crosshead pin and the bushing assembly has significantly deteriorated in the 15%~40% low flow load section. During the actual operation of the equipment, it is necessary to avoid the equipment running in the lowregulated load segment for a long time, which provides a practical reference value for the equipment personnel to optimize and adjust the compressor flow.
Key words: piston compressor; intake flow regulation; gas force;connecting rod wear; lubricating oil film; oil film lubrication characteristics; compressor flow regulation
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