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Multi-stage elastic supporting assembly and dynamic pressure gas radial bearing

An elastic support and component technology, applied in the direction of sliding contact bearings, rotating bearings, bearings, etc., can solve the problems of uncertain impact, limited support rigidity, small bubble volume, etc., to reduce friction damage and structural damping. The effect of small and enlarged heat exchange area

Pending Publication Date: 2019-06-21
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bubble volume is small and the support rigidity is limited, and the problems of friction damage and uncertain impact are prone to occur during start-stop and operation. This application provides a multi-stage elastic support component and a dynamic pressure gas radial bearing.

Method used

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  • Multi-stage elastic supporting assembly and dynamic pressure gas radial bearing
  • Multi-stage elastic supporting assembly and dynamic pressure gas radial bearing
  • Multi-stage elastic supporting assembly and dynamic pressure gas radial bearing

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Embodiment Construction

[0033] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.

[0034] Gas lubrication technology originated in the middle of the 19th century. As a non-contact, high-speed, low-power, and high-precision support technology, gas-lubricated bearings are widely used in rotating machinery such as centrifuges, compressors, fans, and pumps, especially in ultra-high temperature , ultra-low temperature and strong radiation and other special conditions. As an important branch of gas dynamic pressure lubricatio...

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Abstract

The invention belongs to the technical field of mechanical equipment, and particularly relates to a multi-stage elastic supporting assembly and a dynamic pressure gas radial bearing. A supporting foilsheet of an existing bulled radial dynamic pressure gas bearing comprises an elastic foil sheet with bubbles and a flat foil; the bubble type elastic foil sheet has the advantages of being high in rigidity and damping performance, high in vibration absorbing capacity, and high in stability; the bubbles are small in size, and the supporting stiffness is limited, and frictional damage and undetermined impact are easily caused during starting, stopping and operating. The multi-stage elastic supporting assembly comprises a flat coil and an elastic barrel foil sheet which are sequentially arranged, wherein the elastic barrel foil sheet comprises an elastic barrel surface; a plurality of through holes are formed in the surface of an elastic barrel and are connected to one side of a bending coiling part; and the bending coiling part is protruded and is in a multi-layer bending coiling form. According to the multi-stage elastic supporting assembly, the stiffness and the load are borne by stages; the flow around the multi-stage elastic supporting assembly is increased, so that the heat exchanging area is increased, heat can be conveniently dissipated after bearing for a long time, and as aresult, the operation performance is further improved.

Description

technical field [0001] The application belongs to the technical field of mechanical equipment, and in particular relates to a multi-stage elastic support assembly and a dynamic pressure gas radial bearing. Background technique [0002] The dynamic pressure gas bearing forms a wedge-shaped gap between the two relatively moving surfaces of the shaft and the bearing. The gas is driven by its own viscosity and compressed in the wedge-shaped gap to generate a pressure field, thereby supporting the high-speed rotation of the rotor. Obviously the gas film stiffness of the dynamic pressure gas bearing is lower than that of the static pressure gas bearing, but its dynamic pressure effect will increase obviously with the increase of the rotational speed. Its outstanding advantage is that it does not need an external pressure gas source, which is very beneficial to reduce the complexity of the device, improve the economy of the turbomachinery and expand its application range. With the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/02F16C17/24F16C37/00
Inventor 陈良侯予陈双涛蔡婕张蓓乐张泽刘秀芳
Owner XI AN JIAOTONG UNIV
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