CN215487193U - Double-sided bubbling foil dynamic pressure gas thrust bearing - Google Patents
Double-sided bubbling foil dynamic pressure gas thrust bearing Download PDFInfo
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- CN215487193U CN215487193U CN202120623797.6U CN202120623797U CN215487193U CN 215487193 U CN215487193 U CN 215487193U CN 202120623797 U CN202120623797 U CN 202120623797U CN 215487193 U CN215487193 U CN 215487193U
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Abstract
The utility model discloses a double-sided bubbling foil dynamic pressure gas thrust bearing, which comprises a bearing seat, a double-sided bubbling foil and a flat foil; the upper end face of the bearing seat is provided with a double-sided bubbling foil, and the upper end face of the double-sided bubbling foil is provided with a flat foil; the upper end face and the lower end face of the double-faced bubbling foil are provided with a plurality of bubbles along the radial direction or the circumferential direction, the convex top of the bubbles on the upper end face is attached to the lower end face of the flat foil, and the convex top of the bubbles on the lower end face is attached to the upper end face of the bearing seat. The utility model has the advantages that the structure is simple, the flat foil and the double-sided bubbling foil are convenient to manufacture, and the flat foil and the double-sided bubbling foil can be formed by one-step processing; the upper end face and the lower end face of the double-faced bubbling foil are provided with a plurality of circles of bubbles along the radial direction or the circumferential direction, so that the double-faced bubbling foil bearing has better rigidity and damping characteristics, and the requirements of different loads can be met. Meanwhile, the double-sided bubbling foil can generate effective elastic predeformation in the assembling process, and the bearing capacity and the stability of the bearing are further improved.
Description
Technical Field
The utility model belongs to the field of dynamic pressure gas bearings in high-speed rotating machinery, and particularly relates to a double-sided bubbling foil dynamic pressure gas thrust bearing.
Background
With the development of the technology in the fields of aerospace, energy power and the like, higher and higher requirements are also put forward on the lubricating technology in order to keep the stability and reliability of high-speed running machinery. When the rotating speed of the rotor is very high or the relative movement speed is very high, such as an aircraft turbine engine or a microminiature gas turbine, the oil temperature is rapidly increased due to friction caused by high-speed movement, so that an effective lubricating film cannot be formed, and the oil bearing cannot meet the requirement, and when the working environment needs high purity, such as a turbo machine used for a helium liquefying device, a space refrigerating machine and the like, if the oil bearing is adopted, the working environment is polluted. In this case, other types of bearings are required for lubrication. The magnetic bearing has a complex structure and high cost, so that the popularization of the magnetic bearing is limited, and the gas bearing is a better choice.
The bubbling dynamic pressure gas thrust bearing has the advantages of strong shock absorption capability, high stability and the like of a common foil dynamic pressure gas bearing. The multilayer bubbling foil bearing formed by combining the single-sided bubbling foils can adapt to different loads to a certain degree, but has great difficulty in assembly and foil processing, and the application of the multilayer bubbling foil bearing in high-speed rotating machinery is limited.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a double-sided bubbling foil dynamic pressure gas thrust bearing which has better rigidity and damping characteristics, can adapt to different loads and has good processing and assembling performance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a double-sided bubbling foil dynamic pressure gas thrust bearing comprises a bearing seat, a double-sided bubbling foil and a flat foil, and is characterized in that the double-sided bubbling foil is arranged on the upper end face of the bearing seat, and the flat foil is arranged on the upper end face of the double-sided bubbling foil. The upper end face and the lower end face of the double-faced bubbling foil are provided with a plurality of bubbles along the radial direction or the circumferential direction, the bubbling convex vertex of the upper end face is attached to the lower end face of the flat foil, and the bubbling convex vertex of the lower end face is attached to the upper end face of the bearing seat.
The shape of the bubbles comprises one or two of hollow hemispherical bulges, hollow spherical crown bulges, hollow circular truncated cone bulges and hollow elliptic cylinder bulges, the bubbles on the same end face have the same shape, and the bubbles on the upper end face and the lower end face can have the same shape or different shapes.
The bubbling arrangement mode on the double-sided bubbling foil is uniform arrangement along the radial direction or the circumferential direction.
The double-sided bubbling foil and the flat foil are of fan-shaped structures, and four, six or eight pieces of double-sided bubbling foil are respectively arranged.
The bearing seat, the double-sided bubbling foil and the flat foil are welded together by welding rods, and the welding position is 1-3mm away from the two side edges of the fan shape.
Compared with the prior art, the utility model has the following beneficial technical effects:
the foil with bubbles on both sides is used as an elastic element, so that the rigidity distribution and damping characteristics of the bearing are improved. Compared with a single-side bubbling foil bearing, the double-side bubbling foil bearing has better elasticity and rigidity because bubbles are arranged on the upper end surface and the lower end surface; compared with a multi-layer bubbling foil bearing combined by single-side bubbling foils, the double-side bubbling foil is formed by one-step processing and has better assembling performance.
Drawings
FIG. 1 is a schematic structural view of a double-sided bubbling foil dynamic pressure gas thrust bearing according to the present invention;
FIG. 2 is an assembled pre-deformed view of the double-sided bubbling foil hydrodynamic thrust bearing of the present invention;
FIG. 3 is a schematic diagram and a side view of a double-sided bubbling foil thrust bearing of the double-sided bubbling foil dynamical pressure gas thrust bearing of the present invention;
FIG. 4 is a flat foil structure diagram of the double-sided bubbling foil hydrodynamic thrust bearing of the present invention;
in the figure, 1 is a flat foil, 2 is a double-sided bubbling foil, 3 is a bearing seat, 4 is a bubble, and 5 is a welding position.
Detailed Description
The utility model is described in further detail below with reference to the figures and examples.
The structure of the double-sided bubbling foil dynamic pressure gas thrust bearing is shown in figure 1 and comprises a bearing seat 3, a double-sided bubbling foil 2 and a flat foil 1; the upper end face of the bearing seat 3 is provided with a double-sided bubbling foil 2, and the upper end face of the double-sided bubbling foil 2 is provided with a flat foil 1. The upper end face and the lower end face of the double-faced bubbling foil are provided with a plurality of circles of bubbles 4 along the radial direction or the circumferential direction, the convex top point of the bubbles on the upper end face is attached to the lower end face of the flat foil, and the convex top point of the bubbles on the lower end face is attached to the upper end face of the bearing seat.
As shown in fig. 3, the bubbles on the double-sided blister foil 2 are uniformly arranged in the radial direction or the circumferential direction. The shape of the bubbles comprises one or two of hollow hemispherical bulges, hollow spherical crown bulges, hollow circular truncated cone bulges and hollow elliptic cylinder bulges, the bubbles on the same end face have the same shape, and the bubbles on the upper end face and the lower end face can have the same shape or different shapes.
As shown in fig. 3 and 4, the double-sided bubbling foil 2 and the flat foil 1 are of fan-shaped structures, each of which is four, six or eight, and are all formed by one-step processing; the bearing seat 3, the double-sided bubbling foil 2 and the flat foil 1 are welded together by welding rods, and the welding position 5 is a position 1-3mm away from two side edges of the fan shape.
The utility model has the advantages of simple structure, easy processing and assembly. The upper end face and the lower end face of the double-faced bubbling foil are provided with a plurality of circles of bubbles along the radial direction or the circumferential direction, so that the double-faced bubbling foil bearing has better rigidity and damping characteristics, and the requirements of different loads can be met. Meanwhile, the double-sided bubbling foil can generate effective elastic predeformation in the assembling process, and the bearing capacity and the stability of the bearing are further improved.
While the utility model has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The utility model provides a gaseous footstep bearing of two-sided tympanic bulla foil dynamic pressure, is including bearing frame (3), two-sided tympanic bulla foil (2) and plain foil (1), its characterized in that bearing frame (3) up end is provided with two-sided tympanic bulla foil (2), and two-sided tympanic bulla foil (2) up end is provided with plain foil (1), the up end is provided with many rings of tympanic bulla (4) along radial or circumference about the two-sided tympanic bulla foil, and the protruding summit of tympanic bulla of up end is laminated with plain foil lower extreme face, and the protruding summit of tympanic bulla of lower extreme face is laminated with the bearing frame up end.
2. A double-sided bubbled foil hydrodynamic gas thrust bearing according to claim 1 wherein: the shape of the bubbles comprises one or two of hollow hemispherical bulges, hollow spherical crown bulges, hollow circular truncated cone bulges and hollow elliptic cylinder bulges, the bubbles on the same end face have the same shape, and the bubbles on the upper end face and the lower end face can have the same shape or different shapes.
3. A double-sided bubbled foil hydrodynamic gas thrust bearing according to claim 1 wherein: the arrangement mode of the bubbles on the double-sided bubbling foil (2) is uniform arrangement along the radial direction or the circumferential direction.
4. A double-sided bubbled foil hydrodynamic gas thrust bearing according to claim 1 wherein: the double-sided bubbling foil (2) and the flat foil (1) are of fan-shaped structures, and four, six or eight pieces of foil are respectively arranged.
5. A double-sided bubbled foil hydrodynamic gas thrust bearing according to claim 1 wherein: the bearing seat (3), the double-sided bubbling foil (2) and the plain foil (1) are welded together through welding rods, and the welding position (5) is 1-3mm away from the two side edges of the fan shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120623797.6U CN215487193U (en) | 2021-03-29 | 2021-03-29 | Double-sided bubbling foil dynamic pressure gas thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120623797.6U CN215487193U (en) | 2021-03-29 | 2021-03-29 | Double-sided bubbling foil dynamic pressure gas thrust bearing |
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| Publication Number | Publication Date |
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| CN215487193U true CN215487193U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120623797.6U Active CN215487193U (en) | 2021-03-29 | 2021-03-29 | Double-sided bubbling foil dynamic pressure gas thrust bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855748A (en) * | 2021-03-29 | 2021-05-28 | 西北农林科技大学 | Double-sided bubbling foil dynamic pressure gas thrust bearing |
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2021
- 2021-03-29 CN CN202120623797.6U patent/CN215487193U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855748A (en) * | 2021-03-29 | 2021-05-28 | 西北农林科技大学 | Double-sided bubbling foil dynamic pressure gas thrust bearing |
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