Automatic multi-heat-pipe vacuum quantitative working medium filling system

Abstract

The invention discloses an automatic multi-heat-pipe vacuum quantitative working medium filling system. The system comprises an automatic metering pump, a pipeline and control system thereof, a temperature control device, a pressure measuring system, a vacuumizing system and an inflation sealing ring system, wherein the automatic metering pump is connected with a four-way pipe; the outer side of each communicated pipeline of the four-way pipe is uniformly wound with an electric heating wire; the left side of the four-way pipe is connected with the pressure measuring system, and the right side of the four-way pipe is connected with the vacuumizing system; the pipeline and control system thereof comprises a common pipeline, thick pipelines, three-way pipes, the four-way pipe and electromagnetic valves; and the lower part of the four-way pipe is connected with heat pipes located in a cooling device through the pipeline and control system thereof. According to the system, the accurate and quantitative filling of the heat pipe working medium can be achieved (the deviation is 0.5%-2%); a plurality of heat pipes can be quantitatively filled, so that the time cost is reduced; the ultimate vacuum degree of the heat pipes can reach 10<-4 >Pa; and functions of all parts of the system are controlled by on-off of the electromagnetic valves, and automatic assembly line work is easy to achieve.

Description

technical field [0001] The invention relates to an automatic multi-heat pipe vacuum quantitative working medium charging system, which belongs to the field of energy-saving heat exchangers. Background technique [0002] A heat pipe is a highly efficient heat transfer element that utilizes phase change heat transfer. Now, the application of heat pipes has extended from aerospace to industrial and civil, and it plays an irreplaceable role in satellite heat dissipation, solar energy equipment, plateau permafrost melting, waste heat recovery, and electronic component heat dissipation. When people use heat pipes, they also put forward higher requirements on the performance of heat pipes. The main factors affecting the performance of the heat pipe are: the shape of the heat pipe, the structure of the liquid-absorbing core, the type of working fluid, the non-condensable gas, the liquid filling rate, and the vacuum environment for preparing the heat pipe. Existing patents on heat ...

AI Technical Summary

Problems solved by technology

The vacuum degassing method not only affects the residual amount of air in the heat pipe, but also affects the degree of exhaustion of the gas adsorbed on the metal surface of the heat pipe inner wall.

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