CN112648379A - Elastic wave foil type cylindrical surface air film flexible supporting structure - Google Patents
Elastic wave foil type cylindrical surface air film flexible supporting structure Download PDFInfo
- Publication number
- CN112648379A CN112648379A CN202110142223.1A CN202110142223A CN112648379A CN 112648379 A CN112648379 A CN 112648379A CN 202110142223 A CN202110142223 A CN 202110142223A CN 112648379 A CN112648379 A CN 112648379A
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- Prior art keywords
- foil
- arc
- shaft sleeve
- flat plate
- ring
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- 239000011888 foil Substances 0.000 title claims abstract description 128
- 230000008093 supporting effect Effects 0.000 title claims abstract description 50
- 230000003068 static effect Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
Abstract
The invention relates to an elastic wave foil type cylindrical air film flexible supporting structure, and belongs to the technical field of non-contact mechanical sealing. The invention comprises an external supporting shaft sleeve, a flat plate, a wave-shaped foil, a static ring, a moving ring rotor and a pressing block; open the slotted on the rotating ring rotor, quiet ring eccentric mounting is on the rotating ring rotor, and outer support shaft sleeve and quiet ring are installed on the exterior structure with the axle center, have seted up ~ draw-in groove on the outer support shaft sleeve circumference inner wall, and arrangement has the arc board on the wave form foil, and the arc board is located the inner circumference wall of outer support shaft sleeve, and the flat board is installed in the draw-in groove one side, and the wave form foil is hugged closely the flat board and is installed in the draw-in groove, and the briquetting is impressed opposite side in the draw-. The invention can bear larger load and uniform structural rigidity; the supporting performance of the sealing structure can be improved by adjusting the number of the wave foils and the parameters of the wave foils; the flexible supporting and buffering effect and the heat transfer performance of the sealing structure can be improved by adjusting the porosity degree of steel wire wound holes of the flat plate and the circular arc plate.
Description
Technical Field
The invention relates to an elastic wave foil type cylindrical air film flexible supporting structure, which is particularly suitable for an axial sealing device of a high-speed rotating mechanical rotating shaft and belongs to the technical field of non-contact mechanical sealing.
Background
The sealing technology is one of the key technologies of the aeroengine, and plays a key role in improving the mechanical working efficiency, ensuring the reliability and the like. The original traditional sealing mode adopts contact sealing, which is only suitable for low-speed rotating machinery, but for high-speed rotating machinery, the contact sealing structure can generate a large amount of friction to seriously affect the mechanical structure, so that the adoption of a non-contact sealing device is particularly important in high-speed rotating machinery; the general aerospace field is the field of high-speed operation machinery, and non-contact sealing can bring better sealing performance, and in the cylindrical surface air film sealing, the rotating ring rotor and the static ring drive gas to flow through the rotation of the rotor, so that a dynamic pressure effect is formed between the static ring and the dynamic ring, a layer of film is generated, the film has certain rigidity to support the static ring, and therefore the non-contact between the static ring and the dynamic ring is achieved, and the sealing effect between micro gaps is achieved through the air film.
The air film is the existence of a micron order, and a little vibration all can influence the even running of air film, and when the emulation state, the steady state operation of supposing the air film is an ideal state, but can take place a lot of external disturbance among the actual conditions, and this all can make the air film damage, produces the contact operation, for preventing the emergence of this type of operating condition, designs a bearing structure and absorbs outside vibration energy, avoids the vibration to damage the air film, makes it reach accurate dynamic (even) operation.
Disclosure of Invention
The invention aims to provide an elastic wave foil type cylindrical surface air film flexible supporting structure to solve the problems that a sealing air film is deformed due to working condition change in the running process of a high-speed rotating machine, the air film is unstable to cause abrasion of a rotor and a static ring of a moving ring and the like.
The invention is realized according to the following technical scheme: an elastic wave foil type cylindrical surface air film flexible supporting structure comprises an outer supporting shaft sleeve 1, a flat plate 2, a waveform foil 4, a static ring 5, a moving ring rotor 6 and a pressing block 7; a groove 601 is formed in a movable ring rotor 6, a static ring 5 is eccentrically installed on the movable ring rotor 6, an outer supporting shaft sleeve 1 and the static ring 5 are coaxially installed on an external structure, the outer supporting shaft sleeve 1 is used for fixedly supporting the whole sealing structure, 8-16 clamping grooves 101 are formed in the circumferential inner wall of the outer supporting shaft sleeve 1, an arc plate 3 is arranged on a waveform foil 4, the arc plate 3 is located on the inner circumferential wall of the outer supporting shaft sleeve 1, a flat plate 2 is installed on one side in the clamping grooves 101, the waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping grooves 101, a pressing block 7 is pressed into the other side in the clamping grooves 101, the waveform foil 4 is in linear contact with the outer wall face of the static ring 5, and the outer supporting shaft sleeve 1, the flat plate 2, the arc plate 3, the waveform foil 4 and the static.
The vertical plate of the waveform foil 4 is a head end 401, the other end of the waveform foil 4 is a tail end 402, foil blades 405 are arranged between the head end 401 and the tail end 402 of the waveform foil 4, a straight groove 404 is arranged between the two foil blades 405, an arc convex surface on each foil blade 405 is an arc foil 403, a plurality of waveform foils 4 are uniformly arranged on the periphery of the stationary ring 5, the head end 401 of each waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping groove 101, the tail end 402 of the waveform foil 4 is in a free state and close to the head end 401 of the adjacent waveform foil 4, the arc foils 403 of the waveform foil 4 are in linear contact with the outer wall surface of the stationary ring 5, and each waveform foil 4 is provided with.
The flat plate 2 and the arc plate 3 are porous elastic structures, namely straight plate-shaped and arc-shaped structures formed by winding steel wires together, and the steel wires of the flat plate 2 and the arc plate 3 are wound with gaps, are porous and have certain elasticity.
The working principle of the elastic wave foil type cylindrical air film flexible supporting structure is as follows: the cylindrical surface air film sealing is to generate dynamic pressure effect in the rotation of air and generate a thin air film to form non-contact sealing; in the structure, an air film is formed by the rotation of air between a rotor 6 and a static ring 5, the rigidity of the air film is generated for supporting the static ring 5, and a corrugated foil 4, an arc plate 3, a flat plate 2 and a pressing block 7 are arranged on an outer supporting shaft sleeve 1 for supporting the static ring 5; the supporting forces generated by the two parts are balanced to achieve stable operation of the air film sealing structure, the formed air film is thin, when the stress deformation of the static ring 5 is large, the film can be damaged, the wave-shaped foil 4 supports the static ring 5 to prevent excessive stress deformation, and one part of stress is buffered by the wave-shaped foil 4; in addition, the arc plate 3 is arranged on the outer side of the waveform foil 4 to prevent the waveform foil 4 parts from being damaged by overlarge impact; the wave-shaped foil 4 is arranged on the clamping groove 101 of the outer supporting shaft sleeve 1, and the arc foil 403 of the wave-shaped foil 4 is in line contact with the static ring 5, so that the friction and the abrasion between the rotor 6 and the static ring 5 of the dynamic ring in the starting process can be reduced.
The invention has the following beneficial effects:
1. the elastic wave foil type cylindrical surface air film flexible supporting structure can bear a larger load range and bear uniform structural rigidity;
2. the supporting performance of the sealing structure can be improved by adjusting the number of the wave foils and the parameters of the wave foils;
3. the flexible supporting and buffering effect and the heat transfer performance of the sealing structure can be improved by adjusting the porosity degree of steel wire wound holes of the flat plate and the circular arc plate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic axial view of the present invention;
FIG. 3 is a schematic view of the outer supporting sleeve according to the present invention;
FIG. 4 is a schematic view of the installation position of the flat plate, the corrugated foil and the outer support sleeve according to the present invention;
FIG. 5 is a schematic view of a mounting structure for a corrugated foil according to the present invention;
FIG. 6 is a schematic view of a corrugated foil according to the present invention;
FIG. 7 is a schematic view of an arc plate mounting structure of the present invention;
FIG. 8 is a schematic view of a rotor structure of a rotating ring according to the present invention.
The reference numbers in the figures are: 1: outer supporting shaft sleeve, 2: flat plate, 3: arc plate, 4: waveform foil, 5: stationary ring, 6: rotating ring rotor, 7: briquetting, 101: card slot, 401: head end, 402: tail end, 403: arc foil, 404: straight groove, 405: foil leaf, 601: a groove.
Detailed Description
The invention will be further described with reference to the following figures and examples, without however restricting the scope of the invention thereto.
Example 1: as shown in fig. 1-8, an elastic wave foil type cylindrical surface air film flexible supporting structure comprises an outer supporting shaft sleeve 1, a flat plate 2, a wave-shaped foil 4, a stationary ring 5, a moving ring rotor 6 and a pressing block 7; a groove 601 is formed in a movable ring rotor 6, a static ring 5 is eccentrically installed on the movable ring rotor 6, an outer supporting shaft sleeve 1 and the static ring 5 are coaxially installed on an external structure, 8 clamping grooves 101 are formed in the inner circumferential wall of the circumference of the outer supporting shaft sleeve 1, an arc plate 3 is arranged on a waveform foil 4, the arc plate 3 is located on the inner circumferential wall of the outer supporting shaft sleeve 1, a flat plate 2 is installed on one side in the clamping grooves 101, the waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping grooves 101, a pressing block 7 is pressed into the other side in the clamping grooves 101, the waveform foil 4 is in linear contact with the outer wall surface of the static ring 5, and a sealing structure formed by the outer supporting shaft sleeve 1, the flat plate 2, the arc plate 3, the waveform foil 4 and.
The vertical plate of the waveform foil 4 is a head end 401, the other end of the waveform foil 4 is a tail end 402, foil blades 405 are arranged between the head end 401 and the tail end 402 of the waveform foil 4, a straight groove 404 is arranged between the two foil blades 405, an arc convex surface on each foil blade 405 is an arc foil 403, 10 waveform foils 4 are uniformly arranged on the periphery of the stationary ring 5, the head end 401 of each waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping groove 101, the tail end 402 of the waveform foil 4 is in a free state and close to the head end 401 of the adjacent waveform foil 4, the arc foils 403 of the waveform foil 4 are in linear contact with the outer wall surface of the stationary ring 5, and each waveform foil 4 is provided with.
The flat plate 2 and the arc plate 3 are porous elastic structures, namely straight plate-shaped and arc-shaped structures formed by winding steel wires together, and the steel wires of the flat plate 2 and the arc plate 3 are wound with gaps, are porous and have certain elasticity.
Example 2: as shown in fig. 1-8, an elastic wave foil type cylindrical surface air film flexible supporting structure comprises an outer supporting shaft sleeve 1, a flat plate 2, a wave-shaped foil 4, a stationary ring 5, a moving ring rotor 6 and a pressing block 7; a groove 601 is formed in a movable ring rotor 6, a static ring 5 is eccentrically installed on the movable ring rotor 6, an outer supporting shaft sleeve 1 and the static ring 5 are coaxially installed on an external structure, 12 clamping grooves 101 are formed in the inner circumferential wall of the circumference of the outer supporting shaft sleeve 1, an arc plate 3 is arranged on a waveform foil 4, the arc plate 3 is located on the inner circumferential wall of the outer supporting shaft sleeve 1, a flat plate 2 is installed on one side in the clamping grooves 101, the waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping grooves 101, a pressing block 7 is pressed into the other side in the clamping grooves 101, the waveform foil 4 is in linear contact with the outer wall surface of the static ring 5, and a sealing structure formed by the outer supporting shaft sleeve 1, the flat plate 2, the arc plate 3, the waveform foil 4 and.
The vertical plate of the waveform foil 4 is a head end 401, the other end of the waveform foil 4 is a tail end 402, foil blades 405 are arranged between the head end 401 and the tail end 402 of the waveform foil 4, a straight groove 404 is arranged between the two foil blades 405, an arc convex surface on each foil blade 405 is an arc foil 403, 14 waveform foils 4 are uniformly arranged on the periphery of the stationary ring 5, the head end 401 of each waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping groove 101, the tail end 402 of the waveform foil 4 is in a free state and close to the head end 401 of the adjacent waveform foil 4, the arc foils 403 of the waveform foil 4 are in linear contact with the outer wall surface of the stationary ring 5, and each waveform foil 4 is provided with an.
The flat plate 2 and the arc plate 3 are porous elastic structures, namely straight plate-shaped and arc-shaped structures formed by winding steel wires together, and the steel wires of the flat plate 2 and the arc plate 3 are wound with gaps, are porous and have certain elasticity.
Example 3: as shown in fig. 1-8, an elastic wave foil type cylindrical surface air film flexible supporting structure comprises an outer supporting shaft sleeve 1, a flat plate 2, a wave-shaped foil 4, a stationary ring 5, a moving ring rotor 6 and a pressing block 7; a groove 601 is formed in a movable ring rotor 6, a static ring 5 is eccentrically installed on the movable ring rotor 6, an outer supporting shaft sleeve 1 and the static ring 5 are coaxially installed on an external structure, 16 clamping grooves 101 are formed in the inner circumferential wall of the circumference of the outer supporting shaft sleeve 1, an arc plate 3 is arranged on a waveform foil 4, the arc plate 3 is located on the inner circumferential wall of the outer supporting shaft sleeve 1, a flat plate 2 is installed on one side in the clamping grooves 101, the waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping grooves 101, a pressing block 7 is pressed into the other side in the clamping grooves 101, the waveform foil 4 is in linear contact with the outer wall surface of the static ring 5, and a sealing structure formed by the outer supporting shaft sleeve 1, the flat plate 2, the arc plate 3, the waveform foil 4 and.
The vertical plate of the waveform foil 4 is a head end 401, the other end of the waveform foil 4 is a tail end 402, foil blades 405 are arranged between the head end 401 and the tail end 402 of the waveform foil 4, a straight groove 404 is arranged between the two foil blades 405, an arc convex surface on each foil blade 405 is an arc foil 403, 16 waveform foils 4 are uniformly arranged on the periphery of the stationary ring 5, the head end 401 of each waveform foil 4 is tightly attached to the flat plate 2 and installed in the clamping groove 101, the tail end 402 of the waveform foil 4 is in a free state and close to the head end 401 of the adjacent waveform foil 4, the arc foils 403 of the waveform foil 4 are in linear contact with the outer wall surface of the stationary ring 5, and each waveform foil 4 is provided with an.
The flat plate 2 and the arc plate 3 are porous elastic structures, namely straight plate-shaped and arc-shaped structures formed by winding steel wires together, and the steel wires of the flat plate 2 and the arc plate 3 are wound with gaps, are porous and have certain elasticity.
Claims (3)
1. The utility model provides a flexible bearing structure of elastic wave foil type cylinder air film which characterized in that: comprises an external supporting shaft sleeve (1), a flat plate (2), a wave-shaped foil (4), a static ring (5), a moving ring rotor (6) and a pressing block (7); a groove (601) is formed in a movable ring rotor (6), a static ring (5) is eccentrically installed on the movable ring rotor (6), an outer supporting shaft sleeve (1) and the static ring (5) are coaxially installed on an external structure, 8-16 clamping grooves (101) are formed in the inner wall of the circumference of the outer supporting shaft sleeve (1), an arc plate (3) is arranged on a waveform foil (4), the arc plate (3) is located on the inner circumferential wall of the outer supporting shaft sleeve (1), a flat plate (2) is installed on one side in each clamping groove (101), the waveform foil (4) is tightly attached to the flat plate (2) and installed in each clamping groove (101), a pressing block (7) is pressed into the other side in each clamping groove (101), and the waveform foil (4) is in linear contact with the outer wall surface of the static ring (5, the outer supporting shaft sleeve (1), the flat plate (2), the arc plate (3), the wave-shaped foil (4) and the static ring (5) form a sealing structure, and the sealing structure is eccentrically positioned on the periphery of the moving ring rotor (6).
2. The elastic wave foil-type cylindrical gas film flexible support structure according to claim 1, characterized in that: the novel corrugated foil type transformer is characterized in that a vertical plate of each corrugated foil (4) is a head end (401), the other end of each corrugated foil (4) is a tail end (402), foil leaves (405) are arranged between the head end (401) and the tail end (402) of each corrugated foil (4), a straight groove (404) is arranged between the two foil leaves (405), an arc convex surface on each foil leaf (405) is an arc foil (403), a plurality of corrugated foils (4) are uniformly arranged on the periphery of a stationary ring (5), the head end (401) of each corrugated foil (4) is tightly attached to a flat plate (2) and is arranged in a clamping groove (101), the tail end (402) of each corrugated foil (4) is in a free state and close to the head end (401) of the adjacent corrugated foil (4), the arc foil (403) of each corrugated foil (4) is in linear contact with the outer wall surface of the stationary ring (5), and each.
3. The elastic wave foil-type cylindrical gas film flexible support structure according to claim 1, characterized in that: the flat plate (2) and the arc plate (3) are of porous elastic structures, namely straight plate-shaped and arc-shaped structures formed by winding steel wires together, and the steel wires of the flat plate (2) and the arc plate (3) are wound with gaps, are porous and have certain elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142223.1A CN112648379A (en) | 2021-02-02 | 2021-02-02 | Elastic wave foil type cylindrical surface air film flexible supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142223.1A CN112648379A (en) | 2021-02-02 | 2021-02-02 | Elastic wave foil type cylindrical surface air film flexible supporting structure |
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| Publication Number | Publication Date |
|---|---|
| CN112648379A true CN112648379A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110142223.1A Pending CN112648379A (en) | 2021-02-02 | 2021-02-02 | Elastic wave foil type cylindrical surface air film flexible supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513592A (en) * | 2021-05-20 | 2021-10-19 | 中国计量大学 | Foil piece end face air film sealing structure with boot-shaped dynamic pressure flexible sealing dam |
| CN113969938A (en) * | 2021-12-27 | 2022-01-25 | 天津飞旋科技股份有限公司 | Bump foil assembly, foil dynamic pressure air bearing and shaft system |
-
2021
- 2021-02-02 CN CN202110142223.1A patent/CN112648379A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513592A (en) * | 2021-05-20 | 2021-10-19 | 中国计量大学 | Foil piece end face air film sealing structure with boot-shaped dynamic pressure flexible sealing dam |
| CN113513592B (en) * | 2021-05-20 | 2023-10-20 | 中国计量大学 | Foil end face air film sealing structure with boot-shaped dynamic pressure flexible sealing dam |
| CN113969938A (en) * | 2021-12-27 | 2022-01-25 | 天津飞旋科技股份有限公司 | Bump foil assembly, foil dynamic pressure air bearing and shaft system |
| CN113969938B (en) * | 2021-12-27 | 2022-03-08 | 天津飞旋科技股份有限公司 | Bump foil assembly, foil dynamic pressure air bearing and shaft system |
| WO2023126021A3 (en) * | 2021-12-27 | 2023-08-24 | 天津飞旋科技股份有限公司 | Bump foil assembly, foil dynamic-pressure air bearing, and shafting |
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