Axial thrust bearing structure of centrifugal compressor of high-speed motor

A centrifugal compressor, axial thrust bearing technology, applied in machines/engines, components of pumping devices for elastic fluids, mechanical equipment, etc. Compact, increased rotation speed, high efficiency

Pending Publication Date: 2017-01-11
SHANGHAI UNITED COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The problem to be solved by the present invention is to provide a high-speed motor for the prior art that adopts the shaft configuration structure of the axial thrust bearing compressor rotor, which cannot rotate at a higher speed, cannot output sufficient pressure, and cannot exert higher power. A structure in which axial bearings are used in centrifugal compressors to shorten the length of the rotor

Method used

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  • Axial thrust bearing structure of centrifugal compressor of high-speed motor
  • Axial thrust bearing structure of centrifugal compressor of high-speed motor
  • Axial thrust bearing structure of centrifugal compressor of high-speed motor

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1, an axial thrust bearing structure of a centrifugal compressor with a high-speed motor, in which an axial thrust bearing 6 is arranged against the back of the impeller 2 . Such an arrangement structure is particularly compact, and there is no need to fix a ring of steel plates on the rotating shaft 11, and then two axial thrust bearings are clamped on both sides of the steel plate ring to shorten the length of the rotating shaft 11.

Embodiment 2

[0031] In Embodiment 2, the axial thrust bearing 6 is arranged against the back of the impeller 2, and the air seal 7 is connected with the axial thrust bearing 6 to form an integral structure. Such configuration is also an obviously compact configuration, fixation and connection structure compared with the prior art, and also serves the purpose of shortening the length of the rotating shaft 11 and the rotor.

Embodiment 3

[0032] Embodiment 3, an axial thrust bearing structure of a centrifugal compressor with a high-speed motor, the compressor impeller 2 is arranged in the volute 3, the volute 3 is fixed on the casing 5 of the compressor, and the rotating shaft 11 of the impeller 2 is fixed Stretch into the central part of the housing 5:

[0033] Axial thrust bearing 6 is arranged against the back of impeller 2, and a section of groove is opened on the corresponding casing 5, and the rear part of the groove is a support section; the inner ring of the support section is fixed with air seal 7, and the sealing surface of air seal 7 is Contact and seal with the rotating shaft 11. The axial thrust bearing 6 of this structure can withstand the axial pressure of the impeller, and the rear support section relies on and supports it. At the same time, using the space in the inner ring of the support section, a fixed air seal 7 is arranged on the inner ring to contact and seal with the rotating shaft 11. ...

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PUM

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Abstract

The invention relates to an improvement structure of a compressor or an air blower serving as a power source and a raw material air source in a factory, wherein an axial thrust bearing is adopted for reducing the length of a rotor. An axial thrust bearing structure of the centrifugal compressor of a high-speed motor is characterized in that the axial thrust bearing abutting against the back of an impeller is arranged, and is further characterized in that air seals and the axial thrust bearing are connected together. The axial thrust bearing structure comprises a specific arranging structure of the multiple air seals and the axial thrust bearing. The situation that in the prior art, a circle of steel plate ring fixedly stretches out of a rotating shaft on the rotor, and axial thrust bearing structures are arranged on the two sides of the steel plate ring is changed; and the arrangement on the rotating shaft can be simplified and can be compact, the length is reduced, the inherent capability of bearing the rotating speed is enhanced, the rotating speed of the compressor is increased, and the output pressure and power of the compressor are improved.

Description

technical field [0001] The invention relates to the improved structure of compressors or blowers used as power sources and gas sources for raw materials in factories, in particular to the improvement of centrifugal compressors or blower components directly driven by high-speed motors, and to the use of axial thrust bearings to shorten the rotor length An improved structure. Background technique [0002] The present invention relates to the improved structure of compressors or blowers used as power sources or gas sources for raw materials in factories. The number of parts of such compressors is reduced to the limit, and the traditional gear speed-increasing mechanism is not used, but the centrifugal compression driven by high-speed motors is directly used. machine or blower. [0003] If the impeller of a centrifugal compressor or blower cannot rotate at high speed, it will not be able to fully perform work and exert its efficiency. Therefore, high-speed rotation of the impel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/056
Inventor 长谷川和三
Owner SHANGHAI UNITED COMPRESSOR
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