Effect of clearance volume on the internal flow characteristics and output performance of oil-gas multiphase reciprocating pump DOI Creative Commons

Xuemin Jing,

Yongqi Wang, Xue‐Feng Zhang

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 9, 2024

In the production of oil and natural gas, excessive clearance volume is an important factor affecting normal operation oil-gas multiphase pump. Currently, little research has been conducted on effect output characteristics pump at home abroad, leading to extremely low efficiency in field application Therefore, this study numerical calculations internal flow performance under different volumes using FLUENT software. Results show that pressure fluid velocity gradually decrease as increases. Simultaneously, number intensity vortex increase, media pressurization speed becomes slower, lag angle discharge valve opening larger. Moreover, conditions with a higher gas fraction, larger experiences locking. Furthermore, provides theoretical basis for reasonable design by drawing relationship curve between fraction volume. These findings can provide support optimization improvement pumps.

Language: Английский

Investigation on the pressure pulsation characteristics in a twin-screw multiphase pump DOI
Pengbo Wu, Shuaihui Sun, Pengcheng Guo

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(7)

Published: July 1, 2024

A three-dimensional gas–liquid two-phase transient numerical model for a twin-screw multiphase pump based on dynamic grid technology was established and validated with experiments. The pump's simulated pressure distributions, velocity fields, pulsations were analyzed to reveal the mechanisms of transmission pulsation characteristics. results indicated that flow rate fluctuated twice due discharge male female rotors in one cycle. As inlet gas volume fractions increased, decreased, but increased. At engaging positions two rotor tips, sudden drop happened combined effect both tooth-tip tooth-flank leakage. When port opened, backflow happened; chamber working suction chambers closed, slight compression fluid low-pressure occurred, causing increase chamber. inhaled discharged once cycle, so first harmonic at times running speed. simultaneous closing opening ports sides generated four This study would help improve operational stability pumps.

Language: Английский

Citations

2
Effects of the inlet gas volume fraction on the structural dynamic characteristics of gas‒liquid multiphase pumps DOI Creative Commons
Xin Wu, Guojun Zhu, Jianjun Feng

et al.

Applied Ocean Research, Journal Year: 2024, Volume and Issue: 154, P. 104347 - 104347

Published: Dec. 2, 2024

Language: Английский

Citations

0
Effect of clearance volume on the internal flow characteristics and output performance of oil-gas multiphase reciprocating pump DOI Creative Commons

Xuemin Jing,

Yongqi Wang, Xue‐Feng Zhang

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 9, 2024

In the production of oil and natural gas, excessive clearance volume is an important factor affecting normal operation oil-gas multiphase pump. Currently, little research has been conducted on effect output characteristics pump at home abroad, leading to extremely low efficiency in field application Therefore, this study numerical calculations internal flow performance under different volumes using FLUENT software. Results show that pressure fluid velocity gradually decrease as increases. Simultaneously, number intensity vortex increase, media pressurization speed becomes slower, lag angle discharge valve opening larger. Moreover, conditions with a higher gas fraction, larger experiences locking. Furthermore, provides theoretical basis for reasonable design by drawing relationship curve between fraction volume. These findings can provide support optimization improvement pumps.

Language: Английский

Citations

0