Novel wide-flow controllable vortex impeller special for centrifugal compressor

Abstract

The invention discloses a novel wide-flow controllable vortex impeller special for a centrifugal compressor. According to the technical scheme, the novel wide-flow controllable vortex impeller specialfor the centrifugal compressor is characterized by comprising a transmission shaft and further comprising an impeller hub, multiple impeller long blades and multiple impeller short blades, wherein the impeller hub is installed at one end of the transmission shaft; the side face of the impeller hub is a cambered surface; the multiple impeller long blades are machined and formed on the side face inthe impeller hub at a time in an equal-angle mode; and the multiple impeller short blades are uniformly distributed among the long blades at equal angles. According to the novel wide-flow controllable vortex impeller special for the centrifugal compressor, the impeller long blades and the impeller short blades with curve space three-position twisted blade profiles are adopted, and the long bladesand the short blades are distributed at intervals, so that the air inlet sectional area can be effectively increased according to actual discovery, the compression thermal efficiency can be improvedby about 6 percent compared with common impeller efficiency, the suction flow can be increased by about 20 percent, and the actual single-stage impeller efficiency can be improved by about 2 to 5 percent.

Description

technical field [0001] The invention relates to the field of compressor components, in particular to a novel wide-flow controllable vortex impeller for a centrifugal compressor. Background technique [0002] The impellers used in most gas centrifugal compressors on the market are mostly binary fluid technology, which is a linear twisted impeller shape, and the flow direction of the gas is irregular. Using this impeller will cause the thermal efficiency of the compressor to be biased. Low, long impeller processing cycle, low flow of impeller with the same cross-sectional area, etc. Contents of the invention [0003] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a new type of wide flow controllable vortex impeller dedicated to centrifugal compressors, so as to solve the problems mentioned in the background technology. [0004] Above-mentioned technical purpose of the present invention is achieved through t...

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Problems solved by technology

[0002] The impellers used in most gas centrifugal compressors on the market are mostly binary fluid technology, which is a linear twisted impeller shape, and the flow direction of the gas is irregular. Using this impeller will cause the thermal efficiency of the compressor to be biased. Low, long impeller processing cycle, low flow of impeller with the same cross-sectional area, etc.

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