| 摘要: |
| 为促进氢燃料电池的发展，设计了一种新型膜头环绕式冷却隔膜压缩机，在隔膜压缩机上膜头内部设置多个贯穿式的第一冷却流道，其与进气管和排气管在平面内相互垂直布置，进气管和排气管位于第一冷却流道之间，其中第一冷却流道包括多个冷却管路，冷却管路之间呈“米”字型排布；在下膜头靠近油腔侧的端部设置第二冷却流道，其冷却管路布置与第一冷却管路类似，从而使得隔膜压缩机膜头内部可以得到充分冷却。通过搭建的新型膜头环绕式冷却隔膜压缩机实验台，对其性能进行测试，分析了压比、进气温度对其性能的影响以及环绕式冷却管路的冷却效果随冷却介质温度的变化规律。测试结果表明：隔膜压缩机的等熵效率和容积效率会随压比的增大而降低，等熵效率和容积效率最高可达65%和64%；在压比一定的工况下，排气温度随进气温度的增大而升高，且在进气温度相近的情况下，压比越大排气温度越高；环绕式冷却管路的冷却效果在压比大的工况下更显著，最高可降低184.5 ℃。 |
| 关键词: 加氢站 隔膜压缩机 膜头环绕式冷却 压比 |
| DOI： |
| Received:February 28, 2023Revised:May 08, 2023 |
| 基金项目:国家自然科学青年基金（51206022, 52206016）资助项目 |
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| Experimental Study on Circulation Cooling in Novel Diaphragm Compressor |
|
Yang Qiaoming1, Wang Gaofeng2, Zhao Zhaorui2
|
| (1.Foran Energy Corporation, Foshan;2.School of Energy and Power Engineering, University of Shanghai for Science and Technology) |
| Abstract: |
| To promote the development of hydrogen fuel cells, this paper designs a new diaphragm compressor that features diaphragm head wrap-around cooling. A plurality of the first cooling flow channels are provided inside the upper diaphragm head of the diaphragm compressor, which are arranged vertically to each other in the plane with the air inlet pipe and exhaust pipe. The air inlet pipe and exhaust pipe are located between the first cooling flow channels, wherein the first cooling flow channels include a plurality of cooling pipelines, and the cooling pipeline is arranged in an asterisk pattern. The second cooling channel is provided at the end of the lower diaphragm head near the oil chamber side with a cooling line arrangement similar to that of the first cooling line; thus, the diaphragm compressor can be fully cooled inside the diaphragm head. By building a new diaphragm head wrap-around cooling diaphragm compressor test bench, its performance is tested, and the effects of the pressure ratio, inlet gas temperature, and cooling effect of the wrap-around cooling line with the cooling medium temperature change law are analyzed. The test results show that the isentropic and volumetric efficiencies of the diaphragm compressor decrease with the increase in the pressure ratio, and the highest isentropic and volumetric efficiencies can reach 65% and 64%; under the condition of a certain pressure ratio, the exhaust temperature increases with the increase in the inlet gas temperature, and in the case of a similar inlet gas temperature, the higher the pressure ratio the higher the exhaust temperature. The cooling effect of the wrap-around cooling line is more significant under the condition of a large pressure ratio, and the highest can be reduced by 184.5 ℃. |
| Key words: hydrogen station diaphragm compressor membrane head wrap-around cooling pressure ratio |
