基于热机械耦合的压缩机气缸瞬态变形特性影响因素研究

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2024-11-09 DOI:10.1016/j.tsep.2024.103044

Guoxu Zhang, Zhiqiang Huang, Cheng Wang, Zhenye Li, Shichaun Tan, Biao Xu

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引用次数: 0

摘要

往复式压缩机的变形严重影响页岩气开采装置的效率和可靠性。为研究其变形特性及影响因素，本文建立了往复式压缩机缸体-活塞组件耦合系统模型，提出了适用于三维压缩机缸体模型的瞬态计算方法，研究分析了各部件在一个循环中的传热特性、变形特性及影响变形的主要因素。结果表明，压缩机气缸的温度呈 "W "型变化趋势，温度波动较小；气缸体的应力和变形几乎没有变化，活塞的应力波动较大，最大波动为 14.37 MPa；压缩机气缸体-活塞组件的温度和变形呈现 "高出低进 "的分布特征；气缸体在极端时刻的最大变形量为 0.298 mm；活塞环在排气侧膨胀变形，在进气侧收缩，极端时刻的最大变形量为 0.089 mm；热负荷对工作腔和活塞环的变形影响较大。

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A study on the factors influencing the transient deformation characteristics of compressor cylinders based on thermal–mechanical coupling

The deformation of the reciprocating compressor seriously affects the efficiency and reliability of the shale gas extraction unit. In order to study the deformation characteristics and influencing factors, this paper established a coupled system model of reciprocating compressor cylinder block-piston assembly, proposed a transient calculation method applicable to the 3D compressor cylinder model, and studied and analyzed the heat transfer characteristics, deformation characteristics, and main factors influencing the deformation of each component in one cycle. The results show that the temperature of the compressor cylinder shows a “W”-type trend, with low temperature fluctuation; the stress and deformation of the cylinder block are almost unchanged, and the stress of the piston fluctuates greatly, with a maximum fluctuation of 14.37 MPa; the temperature and deformation of the compressor cylinder block-piston assembly show the distribution characteristics of ‘high out and low in’; the maximum deformation of the cylinder block at the extreme moment is 0.298 mm; the piston ring expands and deforms on the exhaust side, and shrinks on the intake side, the maximum deformation is 0.089 mm at the extreme moment; thermal load has a greater influence on the deformation of the working chamber and piston ring.

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.