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我厂制冷设备采用大连冷冻机厂生产的6AW-12.5型制冷压缩机,用氨作制冷剂(简称氨压机)。吸气腔与曲轴箱相通,吸气压力0.35MPa,工作时最高排出压力1.5MPa,工作油压0.5MPk。 工作中用油作为润滑冷却剂,但油常常通过排出的气体带到高压侧,大部分在油分离器中得到分离,少部分被带入冷凝器和蒸发器,所以常需加油。传统的加油方法为减负荷运行加油,即先把氨压机曲轴箱压力降低,再利用氨压机工作时的抽吸原
I plant refrigeration equipment used in Dalian Refrigeration Plant 6AW-12.5-type refrigeration compressor, ammonia for refrigerant (referred to as ammonia press). The suction chamber communicates with the crankcase, suction pressure 0.35MPa, the maximum discharge pressure 1.5MPa, working pressure 0.5MPk. Oil is used as a lubricating coolant in the work, but the oil is often brought to the high pressure side by the evacuated gas, most of it is separated in the oil separator, and a small part is taken into the condenser and the evaporator, so it is often necessary to refuel. The traditional method of refueling for load-relief operation, that is, the first ammonia press crankcase pressure is reduced, then the use of ammonia press working suction