Pressure pulsation in stages ofelectric submersible pump at shut-off under various speeds
DHANASEKARAN Arumugam，KUMARASWAMY Sivasailam
ment of Mechanical Engineering, Chennai Institute of Technology, Chennai-600069, Tamilnadu, India; Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai-600036, Tamilnadu, India
摘要 Electric submersible pumps were widely used in agricultural fields, petroleum and various other industries. The pressure pulsation caused fatigue failure due to vibration in electric submersible pump and affects the life and performance of its system. The objective of this study was to experimentally investigate the characteristics of pressure pulsation which were generated at various stages of a multistage electric submersible pump during closed valve operation at different speeds. An electric submersible pump with five stages was selected for conducting experiments. A variable frequency drive(VFD)was used to operate the electric submersible pump at five different speed settings from 40 to 60 Hz. Piezoresistive pressure transducers were mounted at each stage of the electric submersible pump to capture the unsteady pressure signals. At each speed setting, the electric submersible pump was operated at the shut-off condition and the signals of unsteady pressure from all the five stages were captured. A fast fourier transformation(FFT)was carried out on the pressure signals to convert into frequency domain. From the spectra of pressure pulsation signals, the characteristics of pressure pulsation are obtained for each stage and for various speed settings which are then used to understand its variation with speed and stages.
DHANASEKARAN Arumugam,KUMARASWAMY Sivasailam. Pressure pulsation in stages ofelectric submersible pump at shut-off under various speeds[J]. 排灌机械工程学报, 2020, 38(7): 649-657.
