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Filling method for low-melting-point alkali metal working mediums

An alkali metal, low melting point technology, applied in lighting and heating equipment, indirect heat exchangers, etc., can solve the problems of melting, failure, high activity, etc., and achieve the effect of low oxidation tendency, less danger, and high safety

Inactive Publication Date: 2015-12-02
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they have high activity, will melt at room temperature, and are very easy to chemically react with the contact environment and become invalid.
The traditional filling process of heat pipe working fluid is difficult to be directly applied to the filling of low melting point alkali metal working fluid

Method used

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  • Filling method for low-melting-point alkali metal working mediums
  • Filling method for low-melting-point alkali metal working mediums
  • Filling method for low-melting-point alkali metal working mediums

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] see figure 1 , figure 2 and image 3 , the invention provides a filling method of a low-melting-point alkali metal working fluid, comprising:

[0028] Step S1, an operation box is connected to a filling tank through a pipeline with a valve, the bottom of the filling tank is connected to a workpiece to be filled, and the filling tank is also connected to a vacuum system and an inflation system, so The operation box is connected to the inflation system; the valve is closed, and the filling tank and the workpiece to be filled are vacuumized through the vacuum pumping system;

[0029] Step S2, open the valve, fill inert protective gas into the filling tank and the operation box through the inflation system, put a certain quality...

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Abstract

The invention discloses a filling method for low-melting-point alkali metal working mediums. The filling method comprises the following steps: vacuumizing a filling tank and workpieces to be filled through a vacuumizing system; opening a valve, filling the filling tank and an operation box with an inert protection gas through a gas filling system, placing solid-state alkali metal working mediums with a certain mass in the filling tank through the operation box, and closing the valve; vacuumizing the filling tank and the workpieces to be filled through the vacuumizing system, heating the filling tank, and after the solid-state alkali metal working mediums are completely fused, filling the filling tank with the inert protection gas, and enabling the liquid-state alkali metal working mediums to flow into the workpieces to be filled from the filling tank under the pressure of the inert protection gas; stopping the gas filling, and vacuumizing the filling tank and the workpieces to be filled again; and sealing the workpieces to be filled. The filling method disclosed by the invention realizes the filling process by virtue of the inert protection gas, and the oxidation tendency of the low-melting-point alkali metal working mediums is low; and the mass loss is low and the filling accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of medium-temperature heat pipes, and in particular relates to a filling method of a low-melting-point alkali metal working medium. Background technique [0002] With the development of economy and society, the use temperature of materials and thermal structures is getting higher and higher. High thermal conductivity structures represented by heat pipes have gradually gained people's attention. Compared with high-temperature heat pipes that use lithium, potassium, and sodium working fluids with a temperature higher than 600°C, the working temperature of medium-temperature heat pipes is in the range of 200-600°C, and there are relatively few working fluids to choose from. Thermal conductors are generally used. As an organic substance, thermal conductors are prone to pyrolysis and coking during use, thereby reducing the heat transfer performance and service life of the heat pipe. Compared with thermal conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02
Inventor 胡龙飞陈思员罗晓光陈亮俞继军艾邦成
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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