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针对在测定液体饱和蒸气压实验中使用的平衡管(又称为等压计)较难清洗和装液的问题,经过实践摸索,设计了一个清洗平衡管及装液的实验装置。通过用循环水泵给系统抽真空、用调节阀控制各个分支的真空度、在平衡管内使用细径导管导流等手段控制平衡管内液体的流动,达到清洗和装液的目的。该实验装置易于搭建,操作方法易于掌握。使用该方法的操作者能够独立、快速地完成清洗平衡管和装入待测液,从而为开展与液体饱和蒸气压测定相关的实验教学和科研工作创造了更好的实验条件。
Aiming at the problem that the balance pipe (also known as isobaric meter) used in the experiment of measuring the saturated liquid vapor pressure of liquid is hard to clean and liquid-filled, a practical device for cleaning the balance pipe and charging the liquid is designed. By circulating water pump to the system vacuum, with the control valve to control the degree of vacuum of each branch, the use of small-diameter conduit in the balance of pipe flow diversion conduit and other means to control the flow of liquid balance to achieve the purpose of cleaning and liquid loading. The experimental device is easy to set up, the operation method is easy to grasp. Operators using this method can independently and quickly complete the cleaning of the balance tube and the liquid to be measured, thus creating better experimental conditions for experimental teaching and research related to liquid vapor pressure measurement.