The Thought on the Investigation in the Enterprises of "The Hometown of Pump and Valve in China;

The design of drilling pump valve directly influences its working performance and service life.

Reasons for higher degrading rate of Model 3DJ polymer injection pump and modification of pump valve;

A novel method for fault diagnosis in a drilling pump valve based on an improved Hilbert-Huang transform;

Feature Extraction in Fault Diagnosis of Pump Valve and GSM-Based Remote Failure Alarm Equipment;

Method for calculating pressure drop over valve of sucker rod pump;

LVDT Transducer s Application to Kinematics Test of the Valve of Mud Pump;

In the paper, the influence of the Westphal's pheonmenon of the movement of the pump valve and the compressibility of the liquid on the continuous flow condition of liquid in the cylinderbeing not only comprehensively considered, but also the dynamic property of the pump valve being reserched, a new accurate dynamic model used to describing movement of the pump valve is set up.

Shanghai has owned the necessary conditions of developing a "longevity town".

The formation of China s"longevity town"was studied.