A device for measuring frictional torque of dynamic sealing contact surface

Abstract

The invention belongs to the technical field of end face sealing, and in particular relates to a device for measuring frictional rotational moment of a dynamic sealing contact surface. The invention includes a static part, a moving part and a floating measuring part; the moving part includes a shaft body, and the shaft body rotates and fits on the floating measuring part through the cooperation of the moving ring and the static ring; there is a cooperation between the outer wall of the floating measuring part and the static part gap, and the matching gap is evacuated or filled with lubricating fluid or provided with an air film or forms a magnetic levitation gap; the device also includes a measuring part that can rotate synchronously with the floating measuring part, the action end of the measuring part and the sensing part A one-way abutting fit is formed between the sensing ends, which can constrain the measuring part to produce the synchronous rotation movement. The invention has the advantages of simple measurement, easy realization and easy operation, can effectively avoid the influence of friction resistance torque generated by external factors on the measurement results, and ultimately ensure the accuracy and reliability of measurement data.

Description

A device for measuring friction and rotation torque on the contact surface of a dynamic seal technical field The invention belongs to the technical field of end face sealing, be specifically related to a kind of dynamic sealing contact surface for sealing mechanism research Frictional torque measuring device. Background technique The dynamic seal is a device used to prevent the leakage of the working medium along the gap between the shaft body and the main body shell, and is an important Key basic components, widely used in various types of rotating machinery and moving equipment, directly or indirectly determine or affect the performance, efficiency and energy consumption. There is relative movement and sliding between the contact surfaces of the dynamic and static rings of the dynamic seal, and there is contact friction and wear. There is also power loss. It is of great significance to measure the power consumption and torque of the dynamic seal. frictional forc...

AI Technical Summary

Problems solved by technology

This method is easy to operate, but the contact bearing friction has a great influence, and the stirring power consumption of the sealing medium in the sealing cavity has a certain influence on the friction torque of the contact surface

The above three measurement methods all have some deficiencies. They can neither meet the precise measurement requirements for obtaining the frictional torque of the dynamic seal contact surface, but also put forward higher requirements for measuring equipment such as sensors. Obviously, it is difficult to meet the current development of dynamic seal friction mechanism and The need for reliability studies

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