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中国北方冬季最低气温 - 40℃ ,属高寒地区 ,这给自控装置安全隐定运行带来很大危害 ,必须采取一定维护措施才能保证正常运行。现将维护经验探讨如下。一、对一次元件、一次阀、调节需加伴热、保温低温对一次元件、一次阀造成的危害主要有两点 :(1)介质结冻 ,使设备胀裂。(2 )
The lowest temperature in winter in northern China - 40 ℃, belongs to the alpine region, which brings great harm to the safe and secure operation of the self-controlled device and must take certain maintenance measures to ensure the normal operation. The maintenance experience is discussed below. First, a component, a valve, adjust the need to add heat, heat Low temperature on a component, a valve caused by the harm of two main points: (1) medium freezing, so that equipment cracked. (2 )