Effect of the Gas Volume Fraction on the Pressure Load of the Multiphase Pump Blade

Shi, Guangtai; Yan, Dandan; Liu, Xiaobing; Xiao, Yexiang; Shu, Zekui

doi:10.3390/pr9040650

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…Zhang et al used numerical simulation to reveal the influence law and mechanism of inlet gas content on hydraulic performance and pressure pulsation of multiphase pumps [6]. Liu et al studied the transient flow and dynamic characteristics of a multiphase pump under the condition of cavitation by using the mixture multiphase flow model and the full cavitation model, explored the influence of unsteady excitation caused by cavitation on the change of radial force, and provided a thought for the study of the instability characteristics of a multiphase pump [7]. Shi et al studied the changing characteristics of static pressure and pressure load of multiphase pump impeller blades under different inlet gas content and flow rate, revealing the pressure load characteristics of multiphase pump impeller blades under gas-liquid twophase condition.…”

Section: Introductionmentioning

confidence: 99%

Study of the Effect of Incoming Flow with Fluctuating Gas Void Fraction on Transient Characteristics of a Three-stage Multiphase Pump

Tan,

Zhang,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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For the oil field with high gas content, the oil well produced has obvious gas content fluctuation characteristics. The unsteady flow of multiphase pump will be caused by the fluctuation flow into the pump. In this paper, the unsteady numerical simulation of the flow field in a three-stage multiphase pump is carried out by using Euler-Euler two-fluid model and SST turbulence model. The results show that the pressurization and torque of each impeller change with the fluctuation of the inlet gas content. The second stage impeller has the highest fluctuation due to the change of flow pattern. The inlet gas rate pulsation frequency and static and static interference have significant effects on the pressure pulsation in the impeller, and the dominant frequency is gas rate pulsation frequency or 11 times rotation frequency. The dominant frequency of the diffuser is the blade passing frequency and its double frequency, and the pulsation frequency of the gas content is the secondary frequency and the amplitude is relatively stable. The axial force increases with the increase of gas content, while the radial force changes in reverse.

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Section: Introductionmentioning

confidence: 99%

Study of the Effect of Incoming Flow with Fluctuating Gas Void Fraction on Transient Characteristics of a Three-stage Multiphase Pump

Tan,

Zhang,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…Zhang et al [20] and Shi et al [21] studied the tip clearance of the multiphase pump and obtained the effect of tip clearance on energy characteristics, flow characteristics, and pressure fluctuations, respectively. Shi et al [22] and Li et al [23] investigated the effect of GVF on the energy conversion characteristics, pressure fluctuations, blade surface load, gas distribution, and external characteristics of a multiphase pump. Others have investigated the performance of the multiphase pump under high GVF conditions.…”

Section: Introductionmentioning

confidence: 99%

A Method for the Integrated Optimal Design of Multiphase Pump Based on the Sparse Grid Model

Peng

Zhang

Chen³

et al. 2022

Processes

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Multiphase pumps are used as an important tool for natural gas hydrate extraction owing to their excellent gas–liquid mixing and transport properties. This paper proposes an adaptive response surface-based integrated optimization design method. A model pump is designed based on the axial flow pump design theory. The model pump is numerically simulated and analyzed to obtain its performance parameters. Then the structural and performance parameters of the pump are parameterized to establish a closed-loop input–output system. Based on this closed-loop system, a sensitivity analysis is performed on the structural parameters of the impeller and guide vane, and the parameters that affect the performance of the gas–liquid hybrid pump the most are derived. The Sparse Grid method was introduced to design the experiment and construct the approximate model. The structural parameters of the impeller and guide vane are used as design variables to optimize the pressure increment and efficiency of the pump. After optimization, the pressure increment of the multiphase pump was increased by 10.78 KPa and the efficiency was increased by 0.89% compared to the original model. Finally, we validate the accuracy of the optimized model with tests.

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“…In contrast, a two-phase transport platform eliminates part of the pipeline and separation equipment, saving 40% of infrastructure investment [3]. This approach has been widely used in oil and gas development [4,5]. As the core equipment of a two-phase transport platform, the axial-flow multiphase pump ensures smooth and efficient operation and plays a key role in the development and utilization of oil and gas resources.…”

Section: Introductionmentioning

confidence: 99%

Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions

Deng¹,

Wang²,

Xu³

et al. 2022

Processes

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In this study, we analyze gas–liquid interaction characteristics using a heterogeneous two-fluid model to investigate the influence of interphase force on multiphase pump performance. Two-phase transport platforms are used in oil and gas development to eliminate the need for separation equipment and reduce costs. Full-channel numerical calculations were conducted for an axial-flow multiphase pump based on different inlet gas void fractions (IGVFs) and flow rates. The results indicate that the interaction force of each phase is relatively large in the rotor–stator interference region, and the drag, lift, virtual mass, and turbulent dispersion forces increase with an increase in IGVF or when deviating from the design condition (Q = 50 m3/h). The interphase forces (resistance, lift, virtual mass force, and turbulent dispersion) increase considerably in the impeller passage and minimally in the guide blade passage. Under the conditions of small and high flows, the force of each phase changes considerably in the impeller and diffuser passages, respectively. Furthermore, the turbulent kinetic energy in the flow passage corresponds to the change trend of the interphase force, indicating that the interphase force causes energy loss inside a multiphase pump. These results provide essential information for the optimization of the hydraulic design of multiphase pumps.

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Effect of the Gas Volume Fraction on the Pressure Load of the Multiphase Pump Blade

Cited by 8 publications

References 21 publications

Study of the Effect of Incoming Flow with Fluctuating Gas Void Fraction on Transient Characteristics of a Three-stage Multiphase Pump

Study of the Effect of Incoming Flow with Fluctuating Gas Void Fraction on Transient Characteristics of a Three-stage Multiphase Pump

A Method for the Integrated Optimal Design of Multiphase Pump Based on the Sparse Grid Model

Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions

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