1985年在我厂一次制冷系统扩建设计中,机房三台氨压机全部采用单机双级压缩机,于是我选用其中一台大连产品的4AWJ—17型单机双级压缩机上设置下面这种反向运转方法,今把其管道连接方法和使用法介绍如下: 单机双级机上设置反向运转,其管道连接方法要比单级机稍复杂。因单机双级机机头 1985 in our factory a refrigeration system expansion design, the engine room three ammonia press all single twin-stage compressor, so I choose one of Dalian products 4AWJ-17 type single machine two-stage compressor set the following reverse Operation method, now its pipeline connection method and the use of law described as follows: Stand-alone two-stage machine set up reverse operation, the pipeline connection method is slightly more complex than the single-stage machine. Due to stand-alone two-level machine head