Improvement of mud pump valve

Abstract

The valve assembly is the weak point of the drilling pump. The analysis of the reasons for the failure of the hydraulic part of the drilling pump was carried out, it was shown that the valve assembly of the drilling pump accounts for a significant part of the failures. A three-dimensional geometric model of the valve assembly and a finite-element model of the valve assembly on its basis are developed. According to the results of the calculation, the effect of changing the inclination angle of the axis of the guide tray to the axis of the landing hole in the valve seat on the stress-strain state of the valve assembly was determined. To exclude axial deviations, an improvement in the valve is suggested by changing the design of the upper guide bushing body, which will increase the durability and reliability of the mud pump assembly by self-centering the pylon and the polyurethane seal.