Accurate filling equipment and method for high temperature heat pipe requiring small amount of alkali metal working medium

Abstract

The invention discloses accurate filling equipment and an accurate filling method for a high temperature heat pipe requiring a small amount of alkali metal working medium and relates to a heat pipe technology. The accurate filling equipment comprises a main pipe, a branch, a branch sealing flange, a branch pipe storage tank, a branch pipe storage tank sealing upper flange, a heater, a first ultrahigh vacuum sealing valve, a second ultrahigh vacuum sealing valve, an ultrahigh vacuum molecule local unit, a main gas inlet pipe, an inert gas inlet pipe, an inert gas slim tube, a circulating water cooling pipe, an exhaust pipe and a transparent chamber for placing the solid working medium to be filled into the storage tank. The invention provides the high-efficiency accurate quantitative filling equipment and the high-efficiency accurate quantitative filling method for a small amount of alkali metal; and the oxidation of the alkali metal is reduced to the lowest degree.

Description

technical field [0001] The invention relates to the technical field of heat pipes in the subject of heat transfer, in particular to a quantitative filling device and a filling method for solid alkali metal working fluids of high-temperature heat pipes requiring a small amount (less than 2 grams) of alkali metal working fluids. Background technique [0002] Heat pipe is a high-performance heat transfer element invented by American scientist G.M.Grover in the 1960s. It generally consists of a tube shell, a liquid-absorbing core and an end cover. The inside of the heat pipe is filled with a working medium for heat transfer. When the evaporation end of the heat pipe (the end in contact with the heat source) absorbs heat from the heat source, the working medium absorbs heat and vaporizes, and is transferred to the condensation end of the heat pipe under the action of the pressure difference ( The end in contact with the cold source), the working fluid returns to the evaporation e...

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Problems solved by technology

[0032] The object of the present invention is to disclose a kind of accurate filling equipment and method of the high-temperature heat pipe that needs a small amount of alkali metal working medium, to overcome the low filling efficiency of the existing quantitative filling equipment, the alkali To provide an efficient and accurate small-volume quantitative filling equipment and method for the defects of inaccurate quality control of metalwork, insufficient vacuum inside the high-temperature heat pipe, complicated operation of the storage tank heating process and inaccurate temperature control, and still more oxidation of working fluid sodium , and minimize the oxidation of sodium

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