CN110318829A - A kind of elastic piece seal structure - Google Patents
A kind of elastic piece seal structure Download PDFInfo
- Publication number
- CN110318829A CN110318829A CN201910656012.2A CN201910656012A CN110318829A CN 110318829 A CN110318829 A CN 110318829A CN 201910656012 A CN201910656012 A CN 201910656012A CN 110318829 A CN110318829 A CN 110318829A
- Authority
- CN
- China
- Prior art keywords
- piece
- layer casing
- seal structure
- internal layer
- obturage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Abstract
The application belongs to seal structure design field, in particular to a kind of elastic piece seal structure.Include: outer layer casing, internal layer casing and obturages piece component.The outer layer casing and the internal layer casing are cylindrical in shape, and the internal layer casing is nested in the inside of the outer layer casing, circumferentially arranged in the outside wall surface of the internal layer casing to have annular convex platform；Obturage piece component in a ring, the outer ring end for obturaging piece component has fan-shaped section, the piece component of obturaging is set on the internal layer casing, and there is predetermined angle with the axis direction of the internal layer casing, the inner ring end for obturaging piece component is fixedly connected with the annular convex platform of the internal layer casing, the outer ring end is abutted with the outer layer casing, and when air-flow flowing, the fan-shaped section can compress the outer layer casing.The elastic piece seal structure of the application, structure is simple, obturages and works well, and manufacturing cost is lower, is easily assembled use, can apply in lesser structure size space.
Description
Technical field
The application belongs to seal structure design field, in particular to a kind of elastic piece seal structure.
Background technique
The casing of aero-engine and gas turbine generally uses multilayered structure, has gas between outer layer casing and internal layer casing
Stream circulation, for being cooled down to casing and other component.In order to guarantee that air-flow is not revealed, between outer layer casing and internal layer casing
It needs to carry out seal structure design.
In the prior art since the structure size space between outer layer casing and internal layer casing is smaller, and seal structure is general
Complex, so cause assembly manipulation poor, assembly manipulation is poor to also result in that final to obturage effect effect poor.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
The purpose of the application there is provided a kind of elastic piece seal structure, with solve it is of the existing technology at least one ask
Topic.
The technical solution of the application is:
A kind of elastic piece seal structure characterized by comprising
Outer layer casing, is cylindrical in shape；
Internal layer casing, is cylindrical in shape, and the internal layer casing is nested in the inside of the outer layer casing, the internal layer casing it is outer
It is circumferentially arranged on wall surface to have annular convex platform；
Piece component is obturaged, in a ring, the outer ring end for obturaging piece component has fan-shaped section, and the piece component of obturaging is arranged
There is predetermined angle, the inner ring for obturaging piece component on the internal layer casing, and with the axis direction of the internal layer casing
End is fixedly connected with the annular convex platform of the internal layer casing, and the outer ring end is abutted with the outer layer casing, when air-flow flowing,
The fan-shaped section can compress the outer layer casing.
Optionally, the predetermined angle is 15 °~25 °.
Optionally, the piece component of obturaging includes that piece is obturaged and heel row obturages piece in front row, and piece and described is obturaged at the front row
Heel row obturage piece and include it is multiple obturage piece, it is multiple described to obturage piece and be circumferentially spliced to form the domain.
Optionally, constitute the front row obturage piece and the heel row obturage piece to obturage piece quantity equal, quantity is 20~
30.
Optionally, piece is obturaged at the front row and the heel row obturages the piece of obturaging of piece and staggeredly overlaps assembly.
Optionally, it is described obturage piece with a thickness of 0.3mm~1mm.
Optionally, the inner ring end for obturaging piece has installation side, and each installation Bian Shangjun for obturaging piece is offered
Two mounting holes.
Optionally, the inner ring end for obturaging piece is mounted on the annular convex platform of the internal layer casing by pin.
Optionally, the pin is fixed by the way of riveting.
Optionally, the pin is fixed by the way of welding.
At least there are following advantageous effects in invention:
The elastic piece seal structure of the application, structure is simple, obturages and works well, and manufacturing cost is lower, and being easily assembled makes
With can be applied in lesser structure size space.
Detailed description of the invention
Fig. 1 is the elastic piece seal structure schematic diagram of one embodiment of the application；
Fig. 2 is that the elastic piece seal structure of one embodiment of the application obturages piece schematic diagram；
Fig. 3 is the F-F cross-sectional view of Fig. 1.
Wherein:
1- outer layer casing；2- internal layer casing；21- annular convex platform；3- pin；4- obturages piece component；41- obturages piece in front row；
42- heel row obturages piece；5- obturages piece.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the application
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
In explanation the application, and it should not be understood as the limitation to the application.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.Under
Face is described in detail embodiments herein in conjunction with attached drawing.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the application and simplifies description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the application
The limitation of range.
1 to Fig. 3 the application is described in further details with reference to the accompanying drawing.
This application provides a kind of elastic piece seal structures, comprising: outer layer casing 1, internal layer casing 2 and obturages piece component
4。
Specifically, outer layer casing 1 and internal layer casing 2 are cylindrical in shape, internal layer casing 2 is nested in the inside of outer layer casing 1, interior
It is circumferentially arranged in the outside wall surface of layer casing 2 to have annular convex platform 21；It obturages piece component 4 in a ring, obturages the outer ring end of piece component 4
It with fan-shaped section, obturages piece component 4 and is set on internal layer casing 2, and there is predetermined angle with the axis direction of internal layer casing 2,
The inner ring end for obturaging piece component 4 is fixedly connected with the annular convex platform 21 of internal layer casing 2, and outer ring end is abutted with outer layer casing 1, works as gas
When stream flowing, fan-shaped section can compress outer layer casing 1.
In the embodiment of the application, obturaging piece component 4 is piece 41 to be obturaged by front row and heel row obturages 42 structure of piece
At, it is by multiple forms individually obturaged piece 5 and be circumferentially spliced into the domain that every row, which obturages piece, and piece 41 and heel row are obturaged in front row
The quantity for obturaging piece 42 is identical, and generally 20~30.
In the embodiment of the application, piece 41 is obturaged at front row and heel row obturages piece 42 and staggeredly overlaps assembly, in this way
So that front row is obturaged piece 41 and shelter from two adjacent gaps obturaged between piece 5 that heel row obturages piece 42, while heel row is obturaged
Piece 42 can also shelter from front-seat two adjacent gaps obturaged between piece 5 for obturaging piece 41, reached with this and preferably obturage effect
Fruit.
In the elastic piece seal structure of the application, obturage piece 5 with a thickness of 0.3mm~1mm.
In the elastic piece seal structure of the application, the inner ring end for obturaging piece 5 has installation side, each obturages the peace of piece 5
Mounting hole there are two being opened up on rim.The inner ring end for obturaging piece 5 is mounted on the annular convex platform 21 of internal layer casing 2 by pin 3
On.In the present embodiment, pin 3 can be fixed by the way of riveting or welding.
In the elastic piece seal structure of the application, obturage piece component 4 first by pin 3 be fixed on internal layer casing 2 it
Afterwards, then as shown in Figure 1 it is fitted into the inside of outer layer casing 1 from right to left.Guarantee internal layer casing 2 and outer layer casing 1 when assembly
Coaxial line.After the assembly is completed, obturaging the axis direction direction of piece component 4 and internal layer casing 2, there are an angles, generally 15 °
Between~25 °.Dotted line is to obturage the form before piece component 4 assembles in attached drawing, it is seen that its radial dimension highest point is higher than outer layer machine
The radial dimension of 1 inner wall of casket.Thin so have certain elasticity due to obturaging 5 thickness of piece, when assembly, obturages piece 5 by outer layer casing
1 compressing and generate flexible deformation, form the solid line form in Fig. 1.The flexible deformation for obturaging the generation of piece 5, promotes two rows of envelopes
It is compressed mutually between tight piece 5, so as to form sealing structure, the air-flow in direction shown in arrow in Fig. 1 can be prevented to leak out.
The elastic piece seal structure of the application, structure is simple, obturages and works well, and manufacturing cost is lower, and being easily assembled makes
With can be applied in lesser structure size space.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of elastic piece seal structure characterized by comprising
Outer layer casing (1), is cylindrical in shape；
Internal layer casing (2), is cylindrical in shape, and the internal layer casing (2) is nested in the inside of the outer layer casing (1), the inner sphere mechanism
It is circumferentially arranged in the outside wall surface of casket (2) to have annular convex platform (21)；
Piece component (4) are obturaged, in a ring, the outer ring end for obturaging piece component (4) has fan-shaped section, described to obturage piece component
(4) it is set on the internal layer casing (2), and there is predetermined angle with the axis direction of the internal layer casing (2), it is described to obturage
The inner ring end of piece component (4) is fixedly connected with the annular convex platform (21) of the internal layer casing (2), the outer ring end and the outer layer
Casing (1) abuts, and when air-flow flowing, the fan-shaped section can compress the outer layer casing (1).
2. elastic piece seal structure according to claim 1, which is characterized in that the predetermined angle is 15 °~25 °.
3. elastic piece seal structure according to claim 1, which is characterized in that described obturage piece component (4) include front row
It obturages piece (41) and heel row is obturaged piece (42), piece (41) is obturaged at the front row and the heel row obturages piece (42) including multiple envelopes
Tight piece (5), it is multiple described to obturage piece (5) and be circumferentially spliced to form the domain.
4. elastic piece seal structure according to claim 3, which is characterized in that constitute the front row and obturage piece (41) and institute
State heel row obturage piece (42) to obturage piece (5) quantity equal, quantity is 20~30.
5. elastic piece seal structure according to claim 4, which is characterized in that the front row obturage piece (41) and it is described after
Obturage piece (5) that row obturages piece (42) staggeredly overlap assembly.
6. elastic piece seal structure according to claim 5, which is characterized in that it is described obturage piece (5) with a thickness of 0.3mm
~1mm.
7. elastic piece seal structure according to claim 6, which is characterized in that the inner ring end for obturaging piece (5) has
Side is installed, the installation Bian Shangjun for obturaging piece (5) opens up that there are two mounting holes.
8. elastic piece seal structure according to claim 7, which is characterized in that the inner ring end for obturaging piece (5) passes through
Pin (3) is mounted on the annular convex platform (21) of the internal layer casing (2).
9. elastic piece seal structure according to claim 8, which is characterized in that the pin (3) is by the way of riveting
It is fixed.
10. elastic piece seal structure according to claim 8, which is characterized in that the pin (3) is by the way of welding
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910656012.2A CN110318829A (en) | 2019-07-19 | 2019-07-19 | A kind of elastic piece seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910656012.2A CN110318829A (en) | 2019-07-19 | 2019-07-19 | A kind of elastic piece seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110318829A true CN110318829A (en) | 2019-10-11 |
Family
ID=68124004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910656012.2A Pending CN110318829A (en) | 2019-07-19 | 2019-07-19 | A kind of elastic piece seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165300A (en) * | 2021-10-20 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Turbine rear bearing floating structure capable of reducing thermal stress |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003286808A (en) * | 2002-03-28 | 2003-10-10 | Hitachi Ltd | Casing-sealing structure |
| CN1556893A (en) * | 2001-09-20 | 2004-12-22 | Snecma发动机公司 | Device for maintaining joints with sealing leaves |
| US20050242522A1 (en) * | 2004-03-26 | 2005-11-03 | Snecma Moteurs | Seal between the inner and outer casings of a turbojet section |
| US20150330241A1 (en) * | 2012-12-29 | 2015-11-19 | United Technologies Corporation | Gas turbine seal assembly and seal support |
| CN108952826A (en) * | 2018-06-06 | 2018-12-07 | 中国航发沈阳发动机研究所 | Pneumatic elasticity densification device and gas-turbine unit |
| CN109707468A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院工程热物理研究所 | A kind of efficient seal structure applied between static casing |
| US10422247B2 (en) * | 2015-12-07 | 2019-09-24 | MTU Aero Engines AG | Housing structure of a turbomachine with heat protection shield |
-
2019
- 2019-07-19 CN CN201910656012.2A patent/CN110318829A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556893A (en) * | 2001-09-20 | 2004-12-22 | Snecma发动机公司 | Device for maintaining joints with sealing leaves |
| JP2003286808A (en) * | 2002-03-28 | 2003-10-10 | Hitachi Ltd | Casing-sealing structure |
| US20050242522A1 (en) * | 2004-03-26 | 2005-11-03 | Snecma Moteurs | Seal between the inner and outer casings of a turbojet section |
| US20150330241A1 (en) * | 2012-12-29 | 2015-11-19 | United Technologies Corporation | Gas turbine seal assembly and seal support |
| US10422247B2 (en) * | 2015-12-07 | 2019-09-24 | MTU Aero Engines AG | Housing structure of a turbomachine with heat protection shield |
| CN108952826A (en) * | 2018-06-06 | 2018-12-07 | 中国航发沈阳发动机研究所 | Pneumatic elasticity densification device and gas-turbine unit |
| CN109707468A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院工程热物理研究所 | A kind of efficient seal structure applied between static casing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165300A (en) * | 2021-10-20 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Turbine rear bearing floating structure capable of reducing thermal stress |
| CN114165300B (en) * | 2021-10-20 | 2023-06-13 | 中国航发四川燃气涡轮研究院 | Turbine rear bearing floating structure capable of reducing thermal stress |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191011 |
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| RJ01 | Rejection of invention patent application after publication |