Working medium filling method for high-temperature heat pipe

Abstract

A working medium filling method for a high-temperature heat pipe comprises the following steps that (1) an internal threaded connector is machined in the surface of a high-temperature heat pipe shell,and a plug with the corresponding size is machined; (2) the high-temperature heat pipe shell is placed into a glovebox with an upper ventilating hole and a lower ventilating hole, a sufficient amountof argon is led into the glovebox through the lower ventilating hole, and the excessive argon is exhausted through the upper ventilating hole; and (3) a working medium is cut and weighed in the glovebox, and then the cut working medium is placed into the high-temperature heat pipe shell through the internal threaded connector; (4) a plug is screwed into the internal threaded connector and tightened, and then the high-temperature heat pipe shell with the plug is placed into a vacuum chamber to be vacuumized; and (5) a gap between the plug and the internal threaded connector is welded in a vacuum mode through an electron beam or a laser beam, and thus the high-temperature heat pipe with the good sealing property is obtained.

Description

technical field [0001] The invention relates to a method for filling a working medium of a high-temperature heat pipe, in particular to a method for filling a working medium without a tailpipe. Background technique [0002] With the development of economy and society, high-temperature heat pipe technology has shown potential application prospects in gas turbine power generation, industrial waste heat recovery, and semiconductor smelting. Working fluid filling is one of the key steps affecting the realization of high-temperature heat pipes and the performance of heat and mass transfer. [0003] The common method of filling the working fluid is: welding a filling tube at the end of the high temperature heat pipe, then filling the molten working fluid into the high temperature heat pipe shell through the filling tube in an inert or vacuum environment; finally mechanically sealing the filling tube and soldering. Although this method can realize the preparation of high-temperat...

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a method for filling the high-temperature heat pipe working fluid. Inaccurate filling of working fluid, change of heat pipe size, etc., and the solid working fluid can be directly added to the high-temperature heat pipe shell before vacuuming, and then it can be directly put into use after matching with the plug and vacuuming, avoiding the problem of working fluid Loss, and simple operation, accurate filling

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