Variable-pitch co-rotating meshing double-screw compressor rotor and compressor

Abstract

The invention discloses a variable-pitch co-rotating meshing double-screw compressor rotor and a compressor. The compressor rotor comprises two rotor bodies, wherein molded lines of the two rotor bodies are of eccentric circular structures; the eccentric distances e are equal; the molded lines of the two rotor bodies are the same and are tangent; the pitch radiuses rp1 and rp2 of the two rotor bodies are equal to the radius r of the molded lines; the appearances of the two rotor bodies are formed by guiding the molded lines of the two rotor bodies through variable-pitch spiral lines; and the two rotor bodies always keep a meshing relationship when simultaneously rotating clockwise or anticlockwise around respective pitch centers at the same angular speed. The double-screw compressor comprises a machine shell and the rotor arranged in the machine shell, wherein the rotor adopts the variable-pitch co-rotating meshing double-screw compressor rotor. According to the variable-pitch co-rotating meshing double-screw compressor rotor and the compressor, the two screw rotor bodies rotate cooperatively, so that the periodic volume change of an internal working cavity can be realized, the design requirement of the internal compression ratio is met, and conveying and compression of gas are realized. The variable-pitch co-rotating meshing double-screw compressor rotor and the compressor have the advantages of being easy in processing, few in quick-wear parts, good in meshing, less in wear, low in noise, low in cost, long in service life and the like.

Description

technical field [0001] The invention belongs to the field of rotor processing, and in particular relates to a variable-pitch co-meshing twin-screw compressor rotor and the compressor. Background technique [0002] Twin-screw compressor is a volumetric rotary compressor used to obtain high-pressure gas, and has been widely used in petroleum, chemical and other industries. Twin-screw compressors have a pair of intermeshing male and female rotors which, together with the casing, form the compressor's elementary volume. At present, the existing twin-screw compressor has a pair of helical toothed rotors that mesh with each other and rotate in opposite directions, all of which are synchronous and counter-rotating structures. The drive of the screws is driven by synchronous gears, which inevitably brings about cost and noise problems. On the other hand, in order to meet the meshing conditions and take into account other factors such as leakage and efficiency, the profile equation ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a variable-pitch co-meshing twin-screw compressor rotor and a compressor for the above-mentioned problem of complicated and difficult-to-process twin-screw compressor rotors in the prior art. The processing of the compressor rotor is difficult. Low noise, low running noise, able to achieve high internal compression ratio

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