The attitude changes and leakage characteristics of large-scale plunger pairs in high-pressure plunger pumps

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL Flow Measurement and Instrumentation Pub Date : 2025-01-28 DOI:10.1016/j.flowmeasinst.2025.102838

Shendan Zhao , Hesheng Tang , Yan Ren , Defa Wu , Yinshui Liu

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引用次数: 0

Abstract

As the most critical friction pair in high-pressure plunger pumps, the plunger pair significantly influences both the volumetric and mechanical efficiency of the pump. During actual operation, the relative position and orientation between the plunger and plunger sleeve are in constant flux. Moreover, factors such as the large diameter of the plunger, high working pressure, and low medium viscosity contribute to the complexity of gap flow, complicating the evaluation of the sealing efficiency of the plunger pump. Therefore, this article develops a fluid–structure interaction (FSI) simulation model of the plunger pair and investigates the flow characteristics of the clearance under various eccentric postures, as well as the corresponding variations. A large-scale experimental platform was constructed to test the sealing performance of the plunger pair gap. Using a custom eccentricity testing device, the changes in attitude and leakage characteristics during the movement of the plunger pair were elucidated, thereby validating the accuracy of the simulation model. The findings of this study provide a foundation and technical support for the design and application of gap seals in reciprocating piston pumps.

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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.