Rotor of Roots type vapor compressor

Abstract

The invention relates to a rotor of a Roots type vapor compressor, and belongs to the field of vapor compression. The rotor comprises a rotor body the cross section of which is 8-shaped, wherein the sealing surface of the rotor body is parallelly provided with grooves at a certain interval; the grooves are internally provided with sealed strips matched with the grooves, the bottom surfaces of the sealed strips are provided with small holes, one ends of filament winding springs are arranged in the small holes, and the other ends of the filament winding springs prop against the bottom surfaces of the grooves; and the sealed strips are protruded out of the surface of the rotor body, and an expansion clearance is preset between the rotor body and a shell. The Roots type vapor compressor provided by the invention has the advantages that a clamping phenomenon of the rotor and the shell is greatly reduced, a sealing effect is good, and an energy-saving effect is notable.

Description

technical field [0001] The invention relates to a Roots type steam compressor rotor, which belongs to the field of steam compression. Background technique [0002] Due to its relatively low temperature, secondary steam cannot be used as a heat source for heating solutions at the same temperature. In order to save energy, in recent years, mechanical compression is often used to compress the low-temperature secondary steam, and it can be used as a heat source again after raising the temperature. At present, there are two main vapor compression machines, Roots type and centrifugal type, and the traditional Roots type vapor compressor is directly applied from the air Roots blower without improvement. Higher, only about 0.2mm, and the steam medium carries heat and runs at a higher temperature, which often causes the rotor and the casing to be stuck due to the thermal expansion of the rotor, which affects the stable operation of the equipment. Therefore, some compressors connect t...

AI Technical Summary

Problems solved by technology

At present, there are two main vapor compression machines, Roots type and centrifugal type, and the traditional Roots type vapor compressor is directly applied from the air Roots blower without improvement. Higher, only about 0.2mm, and the steam medium carries heat and runs at a higher temperature, which often causes the rotor and the casing to be stuck due to the thermal expansion of the rotor, which affects the stable operation of the equipment. Therefore, some compressors connect the rotor and the casing. The large gap of the shell affects the sealing effect, so the power of the motor is increased to reduce the energy saving effect

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