Flow analysis of clearance between hard sealing surface for high pressure valve

IF 2.7 3区工程技术 Q2 ENGINEERING, MECHANICAL

Flow Measurement and Instrumentation Pub Date : 2025-06-20 DOI:10.1016/j.flowmeasinst.2025.102980

Zong-hao Ye , Zhao-tong Wang , Zhao-nian Zhou , Kan Sheng , Zhi-jiang Jin , Wen-qing Li , Jin-yuan Qian

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引用次数: 0

Abstract

Sealing performance is a critical factor of high pressure valves. Sealing performance is mainly influenced by clearance basin, which is determined by the clearance height, roughness, temperature and pressure. This paper establishes a clearance basin model to study the sealing performance of high pressure valves. A relationship between the contact state and basin is established. The effects of sealing pressure and roughness are analyzed. Guidances on the selection of both sealing pressure and roughness are proposed. In addition, this paper indicates that the leakage rate grows exponentially as the clearance height increases from 0.5 μm to 3.5 μm. The effect of clearance height on the leakage rate is not obvious when the clearance height is less than 1.72 μm. Similarly, the effect of roughness on leakage rate is not negligible when the roughness is less than 0.4 μm. Notably, the effective flow rate can characterize the complexity of the clearance between hard sealing surface. Moreover, it can also ensure the sealing performance of high pressure valves with a good economy at the same time.

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高压阀硬密封面间隙的流动分析

密封性能是影响高压阀门性能的关键因素。密封性能主要受间隙盆的影响，间隙盆由间隙高度、粗糙度、温度和压力决定。为了研究高压阀门的密封性能，建立了间隙池模型。建立了接触状态与盆地的关系。分析了密封压力和粗糙度对密封效果的影响。对密封压力和粗糙度的选择提出了指导意见。此外，随着间隙高度从0.5 μm增加到3.5 μm，泄漏率呈指数增长。当间隙高度小于1.72 μm时，间隙高度对泄漏率的影响不明显。同样，当粗糙度小于0.4 μm时，粗糙度对泄漏率的影响也不可忽略。值得注意的是，有效流量可以表征硬密封面之间间隙的复杂性。而且，它还可以保证高压阀门的密封性能，同时具有良好的经济性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Flow Measurement and Instrumentation 工程技术-工程：机械

CiteScore

4.30

自引率

13.60%

发文量

123

审稿时长

6 months

期刊介绍： Flow Measurement and Instrumentation is dedicated to disseminating the latest research results on all aspects of flow measurement, in both closed conduits and open channels. The design of flow measurement systems involves a wide variety of multidisciplinary activities including modelling the flow sensor, the fluid flow and the sensor/fluid interactions through the use of computation techniques; the development of advanced transducer systems and their associated signal processing and the laboratory and field assessment of the overall system under ideal and disturbed conditions. FMI is the essential forum for critical information exchange, and contributions are particularly encouraged in the following areas of interest: Modelling: the application of mathematical and computational modelling to the interaction of fluid dynamics with flowmeters, including flowmeter behaviour, improved flowmeter design and installation problems. Application of CAD/CAE techniques to flowmeter modelling are eligible. Design and development: the detailed design of the flowmeter head and/or signal processing aspects of novel flowmeters. Emphasis is given to papers identifying new sensor configurations, multisensor flow measurement systems, non-intrusive flow metering techniques and the application of microelectronic techniques in smart or intelligent systems. Calibration techniques: including descriptions of new or existing calibration facilities and techniques, calibration data from different flowmeter types, and calibration intercomparison data from different laboratories. Installation effect data: dealing with the effects of non-ideal flow conditions on flowmeters. Papers combining a theoretical understanding of flowmeter behaviour with experimental work are particularly welcome.