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一、事故经过浙江沿海舟山某新建20吨氟利昂冷库,产前试运转,开机数小时蒸发排管不结霜,压缩机吸气压力也较低,以为制冷剂R12不够,再充灌一瓶40kg,仍如此,究其原因,起初认为系统泄漏,经严格查漏无发现泄漏之处,再怀疑供液电磁阀坏,经检查起跳灵活;然后,依次检查热力膨胀阀、干燥过滤器都完好无损;最终,矛盾集中在高压贮液器出液管上,回收制冷剂后;拆卸贮液桶上所有接管,用弯钩状铅丝插入出液管
First, the accident after a new coastal Zhejiang Zhoushan Freon 20 tons of freon, prenatal test run, boot a few hours evaporation tube does not frost, the compressor suction pressure is low, that the refrigerant R12 is not enough, and then filling a bottle of 40kg , So the reason for it, at first thought that the system leaks, the strict leak did not find any leaks, and then suspect the solenoid valve for the bad, after check take-off and flexible; and then check the thermal expansion valve, followed by drying filters are intact ; Finally, the contradiction is concentrated in the high-pressure liquid receiver liquid pipe, after the recovery of refrigerant; Remove all the receiver bucket, with a hook-shaped lead wire into the liquid pipe