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以该核电一期工程采用的风冷式冷水机组为研究对象,指出在-30.9℃室外环境温度下风冷式冷水机组需要采取保温措施和保证机组正常启动与运行的措施。介绍了该工程中风冷冷水机组在低温环境下采用的运行保障技术,如对压缩机、蒸发器、电控箱的保温,压缩机高低压差的建立,膨胀阀供液压差的建立,冷凝压力调节以及保证系统的回油等。
Taking the air-cooled chiller used in the first phase of this nuclear power project as the research object, it is pointed out that the air-cooled chiller needs to adopt insulation measures and measures to ensure the normal start-up and operation of the unit at an outdoor temperature of -30.9°C. Introduced the operation assurance technology adopted by the air-cooled chiller unit in the low-temperature environment in this project, such as the insulation of compressors, evaporators, and electric control boxes, the establishment of the compressor’s high and low pressure differentials, the establishment of differential pressure for the expansion valve, and the condensation Pressure regulation and ensure the return of oil to the system.