A compact low-speed centrifugal compressor

A centrifugal compressor, low-speed technology, used in mechanical equipment, non-variable-capacity pumps, non-displacement pumps, etc., can solve the problems of difficult diffuser diffusing, unsuitable size constraints, etc., to avoid flow loss. , reduce the loss of circulation, the effect of high boost

A centrifugal compressor, low-speed technology, used in mechanical equipment, non-variable-capacity pumps, non-displacement pumps, etc., can solve the problems of difficult diffuser diffusing, unsuitable size constraints, etc., to avoid flow loss. , reduce the loss of circulation, the effect of high boost

CN112922861BActive Publication Date: 2021-12-28XI AN JIAOTONG UNIV
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  • A compact low-speed centrifugal compressor
  • A compact low-speed centrifugal compressor
  • A compact low-speed centrifugal compressor

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Embodiment Construction

[0034] The present invention is described in further detail below in conjunction with accompanying drawing:

[0035] refer to Figure 1 to Figure 10 , the compact low-speed centrifugal compressor of the present invention includes a guide front cover 2, an impeller 1, a diffuser rear cover 3, a number of diffuser spiral passages 4 and a diffuser collector 5 arranged in sequence; The cover plate 2 is fastened on the diffuser rear cover plate 3, and a columnar cavity is formed between the guide front cover plate 2 and the diffuser rear cover plate 3, and the impeller 1 is located in the columnar cavity, the outer peripheral surface of the impeller 1, the guide An annular channel is formed between the front cover plate 2 and the diffuser rear cover plate 3, and an air inlet is provided on the guide front cover plate 2, and a gas channel 8 is arranged in the impeller 1; The side of the device 5 is provided with a plurality of diffuser back cover passages 6, the diffuser back cover...

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Abstract

The invention discloses a compact low-speed centrifugal compressor, one diffuser cover plate channel corresponds to a diffuser spiral channel, and the diffuser cover plate channel is connected with the entrance of the corresponding diffuser spiral channel, and the diffuser collector A number of diffuser collector inlet channels are arranged on the inner side of the diffuser collector, one diffuser collector inlet channel corresponds to a diffuser helical channel, and one end of each diffuser collector inlet channel is connected with the outlet of the corresponding diffuser helical channel. The pressure collector is a hollow structure, and the other end of the inlet channel of the diffuser collector is connected with the diffuser collector; along the flow direction of the airflow, the cross-sectional area of โ€‹โ€‹the diffuser spiral channel gradually increases, and the cross-sectional area of โ€‹โ€‹the cover plate channel after the diffuser The area gradually increases; the diffuser collector is an equiangular helical structure, and along the spiral direction, the cross-sectional area of โ€‹โ€‹the diffuser collector gradually increases, and the compressor can have the characteristics of high boost and small size.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery and relates to a compact low-speed centrifugal compressor. Background technique [0002] Centrifugal compressors are widely used in industrial gas transportation and energy industries. Compared with positive displacement compressors, centrifugal compressors have the advantages of low maintenance cost, low noise, high power density, etc., while maintaining oil-free compression and steady flow delivery. But for the compression of small flow media, it is usually necessary to increase the rotational speed of the centrifugal compressor or the diameter of the impeller to obtain the target pressure rise. The increase of the speed will affect the running stability and life of the bearing and the rotor, and will also significantly increase the manufacturing cost; while the increase of the wheel diameter will not only increase the manufacturing cost, but the excessive wheel diameter is also detrime...

Claims

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Application Information

Patent Timeline
28 Dec 2021
Publication
CN112922861B
IPC
F04D17/10; F04D29/42; F04D29/44; F04D29/66
CPC
F04D17/10; F04D29/4206; F04D29/441; F04D29/667; F04D29/663
Inventors
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