Bubble counter based on photoelectric technique for leakage detection of cryogenic valves |
| |
| Authors: | Tao Jin Bin Xu Ke Tang Jian-ping Hong |
| |
| Institution: | Institute of Refrigeration and Co, ogenics, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | In order to overcome the inconvenience of manual bubble counting, a bubble counter based on photoelectric technique aiming for automatically detecting and measuring minute gas leakage of cryogenic valves is proposed. Experiments have been conducted on a self-built apparatus, testing the performance with different gas inlet strategies (bottom gas-inlet strategy and side gas-inlet strategy) and the influence of gas pipe length (0, 1, 2, 4, 6, 8, 10 m) and leakage rate (around 10, 20, 30, 40 bubbles/min) on first bubble time and bubble rate. A buffer of 110 cm3 is inserted between leakage source and gas pipe to simulate the downstream cavum adjacent to the valve clack. Based on analyzing the experimental data, experiential parameters have also been summarized to guide leakage detection and measurement for engineering applications. A practical system has already been successfully applied in a cryogenic testing apparatus for cryogenic valves. |
| |
| Keywords: | Photoelectric technique Bubble counter Leakage detection |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
|
