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- Title
空间用轴系芯阀供油率快速检测方法与装置.
- Authors
刘万宁; 豆照良; 李佳鑫; 周刚; 张韶华; 司丽娜; 刘峰斌
- Abstract
Passive micro-lubrication is one of the main forms of micro-lubrication for space-use shaft systems. In the process of micro-lubrication in space,there are problems such as wide individual differences in oil output efficiency of polyimide porous core valves, which need to be tested by run-in screening to ensure that they meet the precise oil supply requirements. An equivalent method for rapid detection of oil supply rate of core valves by using gas instead of aerospace lubricant as fluid medium was proposed to address the problems of time-consuming,high cost and low efficiency of batch testing in traditional run-in screening technology. Based on the underwater bubble method and LabVIEW image recognition technology,a gas permeation detection device was developed for the core valve of porous material,and a batch test was conducted on the core valve with a nominal porosity of 7. 5% using the device. By comparing and analyzing the gas permeability test data of the core valve with the measured oil supply rate data detected by the conventional run-in screening technique,a gas permeability-oil supply rate relationship graph of the spool valve was established. The results show that the developed rapid testing apparatus takes less than 5 min to detect the gas permeability of the core valve,and the detection error is less than 0. 5%,and the prediction error of oil supply rate is less than 6. 0% .
- Publication
Science Technology & Engineering, 2023, Vol 23, Issue 33, p14231
- ISSN
1671-1815
- Publication type
Article