Intelligent friction detecting device of reciprocating seals

ZHANG Qing meng1, HE An xiao2, SHI Jia shun1

(1.College of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China;
2.Safety Science Institute of Liaoning Province, Shenyang 110004, China）

Abstract: Aiming at the problem of automatic detection of the friction of hydraulic reciprocating seals under the condition of high pressure and multicycle times, based on the detection principle of the starting friction and the dynamic friction of the reciprocating seals, a detecting system was designed, and the hardware configuration, PLC software design and manmachine interface design of the control system of the detecting device were done, the friction detecting device of reciprocating seals was eventually obtained based on PLC and kingview. The friction test of Oring seals under the pressure of 25 MPa and recurring 1 000 times was done by the detecting device. The results indicate that the detecting device can detect the dynamic and starting friction of reciprocating seals under the complex condition of high pressure and achieve the test operation process and detection process in the manmachine interface, realize the detection accuracy of 0.65 N, the detection process is stable and reliable a high degree of automation and humancomputer interaction.

Key words: reciprocating seals; friction; PLC and kingview; detecting device