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我所从1970年开始研制螺杆制冷压缩机。几年来,经过空气排量试验、单机性能试验、500小时型式试验、装车运行试验以及地面冷库寿命考验,证明该机组产冷量达到设计要求,性能良好,运转正常,使用可靠。至目前为止,5号机累计运转2,000多小时,经分解检查,除轴封摩擦环及轴封座正常磨损外,阳转子高压端面因循环管路不清洁,而有局部擦伤。其他转子之间以及转
Since 1970, I have been developing screw refrigeration compressors. In recent years, after the air displacement test, stand-alone performance test, 500-hour type test, loading operation test and ground cold storage life test, it is proved that the unit’s cooling capacity meets the design requirements, the performance is good, the operation is normal, and the use is reliable. Up to now, the No. 5 machine has been operating for more than 2,000 hours cumulatively. After being decomposed and checked, except for the normal wear of the sealing ring and the shaft seal seat, the high-pressure end face of the male rotor is partially scraped because of the unclear circulation lines. Between other rotors and turn