Vacuum Friction Testing Machine Atmosphere Control Device and Method

By designing the atmosphere control device of the vacuum friction test machine, using compressed gas path and valve adjustment, combined with sensors and vacuum gauge, precise control of the gas atmosphere is achieved, and the experimental problem that the existing test machine cannot simulate different working conditions is solved.

CN114778357BActive Publication Date: 2025-08-05TSINGHUA UNIVERSITY
3 Cites 0 Cited by

Patent Information

Application Number
CN202210265592.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-03-17
Publication Date
2025-08-05
Estimated Expiration
2042-03-17

AI Technical Summary

Technical Problem

The existing test machines cannot simultaneously realize humidity control of air atmosphere, vacuum control of different single gases, vacuum control of volatile liquids with different saturated vapor pressures, and normal pressure mixing of mixed gases of different proportions, making it difficult to simulate experiments in different working conditions.

Method used

An atmosphere control device of a vacuum friction tester is designed, including at least two compressed gas paths, aggregated gas paths, liquid containers, gas mixing containers, communication pipes, humidity sensors, mechanical pumps and other components. By adjusting the opening and closing of pressure reducing valves, throttle valves and valves, combined with gas concentration sensors and vacuum gauges, precise control of the gas atmosphere is achieved.

Benefits of technology

The precise control of air atmosphere humidity, different single gas vacuum degrees, volatile liquid vacuum degrees and mixed gas ratio is achieved, making it convenient for testing simulations in different working conditions.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention relates to an atmosphere control device for a vacuum friction tester. The device comprises at least two compressed air circuits, a collecting air circuit, a first air circuit, a second air circuit, a liquid container, a gas mixing container, a connecting pipe, a third air circuit, a first humidity sensor, a first branch circuit, a second branch circuit, a third branch circuit, a fourth branch circuit, a mechanical pump, a gas concentration sensor, a second humidity sensor, an ionization vacuum gauge, a first thermal conductivity vacuum gauge, a vacuum partial pressure gauge, a first baffle valve, a second baffle valve, a turbomolecular pump, a third baffle valve, a plug valve, and a second thermal conductivity vacuum gauge. The device is capable of controlling the humidity of the air atmosphere, the vacuum level of different single gases, the vacuum level of volatile liquids with different saturated vapor pressures, and atmospheric pressure mixing and vacuum level control of mixed gases of different proportions, thereby facilitating testing under different working conditions.
Need to check novelty before this filing date? Find Prior Art