Using the pressure difference formed by pressure difference regulating valve, overcome flow resistance of refrigerant in evaporater, supply excess low pressure liquid refrigerant for evaporater.
用压差调节阀形成的压差克服蒸发器内制冷剂的流动阻力，把低压液体制冷剂超量供入蒸发器。
An explosion accident of oxygen pipe at low temperature due to excess operating pressure is introduced. Based on cause analysis of the accident, corresponding precaution measures are presented.
介绍一起氧气管道低温态超压爆破事故，分析了原因，并提出防范措施。
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