Transient Flow Study of a Novel Three-Cylinder Double-Acting Reciprocating Multiphase Pump

Yi, Ma; Luo, Huashuai; Gao, Tao; Zhang, Zhihong

doi:10.1115/1.4036715

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…As the CFD method could offer detailed and accurate prediction of the internal flow of valves, [5][6][7][8][17][18][19][20][21] the commercial CFD software, Fluent, is employed to study the dynamic characteristics and the intuitional flow field distribution of reciprocating pump valves. Taking the discharge process as an example, a half twodimensional (2-D) model of pump-pipeline system with an orifice plate, as shown in Figure 3, is established according to its axial symmetry.…”

Section: Validation Of the Presented Modelmentioning

confidence: 99%

“…However, while the fluid compressibility is relative low, the numerical integration for calculating the improved Adolph model is not easy to converge. In terms of the numerical analysis, Ma et al [5][6][7] investigated the lag characteristics of suction and discharge valves under different working conditions by using computational fluid dynamics (CFD) method. In Zhao et al, 8 a three-dimensional CFD model of a double-acting reciprocating compressor was established to analyze the valve motion, in which a mesh mapping method was employed to realize the independent motion of each valve plate.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic modeling of reciprocating pump valves with considering the interaction effects between pump and pipeline

Chen

Zhang

2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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The components of a pump–pipeline system are coupled and interact with each other, but the dynamic analysis of reciprocating pump valves is usually executed without considering the effects of pipeline. In this article, a theoretical study is carried out to investigate the interaction effects between pump and pipeline on the motions of suction and discharge valves. Based on the principle of force balance and the law of mass and energy conservation, a new dynamic model of reciprocating pump valves is presented in order to obtain the motions of pump valve and the flow characteristics of pipeline simultaneously. The computational results are compared with the prior experimental data and the computational fluid dynamics simulation results to validate the proposed model, and good agreement is obtained. With the proposed model, the influences of piping parameters as well as the interaction effects on dynamic behaviors of pump valves and discharge flow rate are analyzed and discussed. It is found that the error between computational and prior experimental maximum valve lifts is less than 5%, and the proposed model has higher precision than the Adolph model in predicting the actual working characteristics of pump valves. The lift of pump valve and the flow rate in pipe are coupled with each other because the cylinder pressure and the leakage are directly related to the working load and the pressure drop of pipeline. The flow resistance of pipe could reduce the maximum value of valve lift but has slight influence on the lag time of valve opening. With the increasing of spring stiffness, the maximum value of valve lift decreases nonlinearly. The variation characteristics of flow rate versus pump operating speed relationships are significantly influenced by the flow resistance of pipeline, which means that the piping effects are significant and non-negligible for the pump design.

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Section: Validation Of the Presented Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic modeling of reciprocating pump valves with considering the interaction effects between pump and pipeline

Chen

Zhang

2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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“…Because the computational fluid dynamics (CFD) simulation could offer the flow characteristics intuitively, an unsteady CFD method was proposed to study the variation characteristics of flow field in air-operated diaphragm pumps. 17 Additionally, the operating process of reciprocating multiphase pump 18,19 and the performance of double acting reciprocating compressor 20 were investigated and discussed based on the CFD technique.…”

Section: Introductionmentioning

confidence: 99%

Parametric modeling of flow characteristics in reciprocating pump-pipe interaction system

Chen

Zhang

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The flow characteristics in reciprocating pump-pipe system are inevitably subject to the interaction effects between pump and pipeline. In this paper, a parametric interaction model of flow characteristics in reciprocating pump-pipe system is presented by considering the coupling effect and leakage characteristics. The analytical solutions of the proposed interaction equations are deduced with the aid of the harmonic balance method. A testing platform of a simplex plunger reciprocating pump-pipe system is employed for validating the proposed model. The experimental tests under different operating conditions are used to compare the pressure pulsations and discharge flow rates from analytical solutions. It is observed that the analytical solutions are in good agreement with the test data and numerical results, and the prediction error is within 13%, thus validating the presented interaction model and analytical solutions. The interaction effects as well as the flow characteristics in reciprocating pump-pipe system are analyzed and discussed using the proposed model. It is found that the opening of flow control valve has remarkable influence on the relationship between flow rate and operating speed of reciprocating pump. The pressure pulsation within a pipe is closely related to and significantly affected by the plunger-to-cylinder clearance and the plunger stroke.

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“…The development of RPPs has been the focus of researchers' attention, and the optimization of its structure and the improvement of the principle has very important economic benefits for the actual production. The conventional reciprocating piston pump distributing flow (RPPDF) system has drawbacks, such as loose structure, low volumetric efficiency (VE), and severe reflection lag at the high rotating speed [10,11]. The rotating-sleeve distributing flow (RSDF) system overcomes the disadvantages of the RPPDF system.…”

Section: Introductionmentioning

confidence: 99%

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

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Reciprocating piston pumps are widely used in various fields, such as automobiles, ships, aviation, and engineering machinery. Conventional reciprocating piston pump distributing flow (RPPDF) systems have the disadvantages of a loose structure and low volumetric efficiency, as well as affected positively by the operating frequency. In this paper, a novel rotating-sleeve distributing flow (RSDF) system is presented for bridging these drawbacks, as well as structurally improved to overcome the inoperable and challenging problems in oil intake and discharge found in the experiment. Moreover, the Singhal cavitation model specifically for the RSDF system and four-cam groove profiles (CGPs) is established. To find the most suitable CGP to reduce the RSDF’s cavitation, the cavitation of the RSDF system was investigated, combining with simulations by taking into account the gap among the rotating sleeve, the pump chamber, and experiments on four presented CGPs. Simulation results based on vapor volume fraction, cavitation ratio, and volumetric efficiency show that the linear profile’s cavitation is the weakest. Finally, the correctness of the simulation is verified through orthogonal experiments. This research is of great significance to the further development of the RSDF system; more important, it has great potential to promote the reform of the RPPDF method.

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Transient Flow Study of a Novel Three-Cylinder Double-Acting Reciprocating Multiphase Pump

Cited by 6 publications

References 19 publications

Dynamic modeling of reciprocating pump valves with considering the interaction effects between pump and pipeline

Dynamic modeling of reciprocating pump valves with considering the interaction effects between pump and pipeline

Parametric modeling of flow characteristics in reciprocating pump-pipe interaction system

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

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