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现有活塞式制冷压缩机大都在机体的排气腔上设有放空阀,其主要作用是机器拆开之前放出机内存留的空气,和机器重新组装之后排除低压腔存留的空气。八○年我们在进行8AS—12.5制冷压缩机性能测试中曾出现过大量水进入曲轴箱的事故。当时情况是这样:该机24小时标准工况
Most of the existing piston refrigeration compressors are provided with a vent valve on the exhaust cavity of the body, the main function of which is to release the air remaining in the ejector before the machine is disassembled and exclude the air remaining in the low-pressure chamber after the machine is reassembled. In 1980, we had a lot of water into the crankcase during the 8AS-12.5 refrigeration compressor performance test. At that time the situation is this: the aircraft 24 hours standard conditions