A liquid metal cooling blade system and anti-corrosion method thereof

Abstract

The invention relates to the technical field of liquid metal corrosion protection of aero-engine blade cooling systems, and in particular to a liquid metal cooling blade system, which includes a separator, a pipeline A, a pipeline B, an electromagnetic pump, a pipeline C, an expansion joint, a pipeline D, a heat exchange There are pipes E on the heat exchanger; cooling channels are arranged in the blades; cooling channels, pipes A, separators, pipes B, electromagnetic pumps, pipes C, expansion joints, Pipe D, pipe E, pipe F, collector and pipe G are connected in sequence to form a circulation path; there is liquid metal in the circulation path; pipe A, pipe B, pipe C, pipe D, pipe F and pipe G are all made of quartz or It is made of graphite material or aluminum carbide material; the inner wall of the circulation passage is provided with a protective layer. The invention also proposes an anti-corrosion method for the liquid metal cooling blade system. The invention can effectively solve the problem of liquid metal corrosion cooling system at high temperature.

Description

technical field [0001] The invention relates to the technical field of liquid metal corrosion protection of aero-engine blade cooling systems, in particular to a liquid metal cooling blade system and a corrosion prevention method thereof. Background technique [0002] Liquid metal has excellent properties, such as a large difference between melting point and boiling point, physical and chemical properties close to solid, fixed volume, excellent fluidity, and good thermal conductivity of metal, which makes liquid metal widely used in many fields. , such as high-power and high-heat flux chips, space thermal control technology, new clean energy technology and laser-related thermal control, etc., especially in the form of coolants successfully applied to high-performance computers and high-power LED lighting, thus envisioning liquid metal It is used as a fluid working medium on turbine blades of aero-gas engines. [0003] In the application of liquid metal as a fluid in the tur...

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Problems solved by technology

[0003] Liquid metal is used as a flowing working medium on the turbine blades of aviation gas engines. However, in the actual production and application process, due to the relationship between liquid metal gallium and gallium-based alloys and pure metals (iron, chromium and nickel), stainless steel, aluminum alloy and T2 Metal materials such as copper react to varying degrees, reducing the strength of the material, or even crushing and falling off, which affects the normal use of the material to a certain extent. Therefore, it is necessary to propose a scientific and effective method for the selection of materials in contact with liquid metal and the surface protection of metal substrates.

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