| 摘要: |
| 为了促进氢燃料电池的发展，本文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。通过搭建了新型膜头环绕式冷却隔膜压缩机实验台，对其性能进行了测试，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着压比的增大而降低，等熵效率和容积效率最高可达到65%和64%；在压比一定的工况下，排气温度随进气温度增大而升高，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加显著，最高可以降低184.5℃。 |
| 关键词: 加氢站 隔膜压缩机 膜头环绕式冷却 压比 |
| DOI： |
| 投稿时间：2023-02-28 修订日期：2023-05-08
录用日期：2023-06-26 |
| 基金项目:抽气式螺杆压缩机快速泄压特性与混输机理研究(51206022)；湿工质齿间相分布特性及其对两相螺杆膨胀机泄漏的影响机理研究(52206016) |
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| Experimental investigation on circulation cooling employing in novel diaphragm compressor |
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| Abstract: |
| In order to promote the development of hydrogen fuel cells, this paper designs a new diaphragm head wrap-around cooling diaphragm compressor, in which a plurality of 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 the exhaust pipe, and the air inlet pipe and the 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 are arranged in a "米" pattern. The second cooling channel is provided at the end of the lower diaphragm head near the oil chamber side, with a similar cooling line arrangment as the first cooling line, so that the diaphragm compressor can be fully cooled inside the diaphragm head. By building a new membrane head wrap-around cooling diaphragm compressor test bench, its performance was tested, and the effect of pressure ratio, inlet gas temperature on its performance and the cooling effect of the wrap-around cooling line with the cooling medium temperature change law was analyzed. The test results show that: the isentropic efficiency and volumetric efficiency of the diaphragm compressor will decrease with the increase of pressure ratio, and the highest isentropic efficiency and volumetric efficiency can reach 65% and 64%; under the condition of a certain pressure ratio, the exhaust temperature increases with the increase of the inlet gas temperature, and in the case of similar inlet gas temperature, the higher the pressure ratio the higher the exhaust temperature; the cooling effect of the wrap-around cooling line in The cooling effect of the wrap-around cooling line is more significant under the condition of large pressure ratio, and the highest can reduce 184.5℃. |
| Key words: Hydrogenation station Diaphragm compressor Membrane head wrap-around cooling pressure ratio |
