2K cold compressor impeller

Abstract

The invention discloses a 2K cold compressor impeller. The 2K cold compressor impeller is characterized by comprising an impeller rear cover plate (6), a plurality of main blades (2) and a plurality of flow dividing blades (3); the upper surface of the impeller rear cover plate (6) is a U-shaped arc surface with the center protruding upwards, and the center is provided with a rotation shaft connecting port (1); the parts extending from the lower edges of the outer sides of the main blades (2) to the upper edges are downward-protruding arcs matched with the U-shaped arc surface of the impellerrear cover plate (6); the parts extending from the lower edges of the outer sides of the flow dividing blades (3) to the upper edges are downward-protruding arcs matched with the U-shaped arc surfaceof the impeller rear cover plate (6); the main blades (2) and the flow dividing blades (3) are distributed on the U-shaped arc surface of the impeller rear cover plate (6) in a staggered manner; a helium outlet (5) is formed in the inner sides of every two adjacent main blades (2), and a helium inlet (4) is formed by the outer side of each main blade (2) and the outer side of the corresponding adjacent flow dividing blade (3).

Description

technical field [0001] The invention belongs to the field of negative-pressure low-temperature fluid, and relates to a 2K cold compressor impeller, which is specifically applied in a large-scale 2K low-temperature system, and can pressurize and transport low-temperature negative-pressure helium. Background technique [0002] Since the large-scale low-temperature superconducting technology was put into use, in order to ensure the stable and efficient operation of large-scale superconducting conductors, the working temperature of superconductors has continuously dropped to about 1.8K by taking advantage of the characteristics of the superfluid helium temperature zone. [0003] At present, the commonly used method to obtain a 1.8K low temperature system is to directly use a vacuum pump group at room temperature for decompression and cooling. After decompression, the negative-pressure low-temperature helium is heated to normal pressure through the heater, and then sent to the su...

AI Technical Summary

Problems solved by technology

The efficiency of this method is very low, and a large amount of high-quality low-temperature helium is obviously all directly heated by electric heaters and wasted

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