CN105757257B - A kind of active labyrinth seal structure - Google Patents
A kind of active labyrinth seal structure Download PDFInfo
- Publication number
- CN105757257B CN105757257B CN201610297833.8A CN201610297833A CN105757257B CN 105757257 B CN105757257 B CN 105757257B CN 201610297833 A CN201610297833 A CN 201610297833A CN 105757257 B CN105757257 B CN 105757257B
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- CN
- China
- Prior art keywords
- blade
- seal ring
- sealing
- rotor
- active
- 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.)
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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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
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- 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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The present invention provides a kind of active labyrinth seal structure, including rotor, blade seal ring, sealing sheath, locking nut；Blade seal ring is fastened by spline connection with rotor, is superimposed the quantity of blade seal ring as needed, and rotor shaft end is fastened with locking nut, then is buckled in two semicircle sealing sheaths on blade seal ring, and the rectangular teeth on sealing sheath is used to intersect with blade；Blade seal ring is driven to rotate when the rotor rotates, the blade on sealing ring can form active back draught in sealing passage, can effectively suppress gas leakage, simple in structure, sealing effect is more preferable.
Description
Technical field
The invention belongs to rotating machinery sealing device field, more particularly, to a kind of active labyrinth seal structure.
Background technology
Gland seal device is essential sealing device in rotating machinery, generally use labyrinth seal structure.Rotating
In mechanical equipment, since rotor rotates at a high speed, and stator stationary, gap will be produced between the two, it is inside equipment and exterior
There are during gas pressure difference, it will result in gas and flowed in sealing, using traditional sealing structure, gas will necessarily occur and let out
Dew.
The content of the invention
In view of this, the present invention is directed to propose a kind of active labyrinth seal structure, traditional sealing knot is used with solution
The problem of structure, generation gas leakage.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of active labyrinth seal structure, it is characterised in that：Employ active labyrinth seal structure, including rotor
(1), blade seal ring (2), locking nut (3), sealing sheath (4)；The blade seal ring (2) is set in the rotor (1)
Outside, blade seal ring (2) is equipped with uniformly distributed blade, and is fastened in the rotor (1) shaft end locking nut (3), sealing
Sheath (4) is buckled on blade seal ring (2), and the sealing tooth on sealing sheath (4) is used to intersect with blade.
Further, the blade seal ring (2) uses separate type, be arranged on spline in blade seal ring (2) with
Rotor (1) is fastenedly connected.
Further, the sealing sheath (4) is made of two semi-rings.
Further, the sealing tooth on the inside of the sealing sheath (4) is rectangular seal tooth, the rectangular seal tooth and sealing
Blade arranged crosswise on ring.
Further, it is equipped with gap between the blade and sealing sheath (4) of the blade seal ring (2).
Further, the direction blade on the blade seal ring (2) has rotation direction.
Further, sealing sheath (4) middle upper portion is equipped with air admission hole (41), the leaf of air admission hole (41) both sides
Piece sealing ring (2) is oppositely oriented.
Relative to the prior art, a kind of active labyrinth seal structure of the present invention has the advantage that：
(1) a kind of active labyrinth seal structure of the present invention, employs active labyrinth seal structure, works as rotor
During rotation, blade seal ring is rotated with rotor, and the blade on blade seal ring makes the gas forced flow in labyrinth seal, flowing
Direction is high-pressure side, can effectively suppress gas leakage.
(2) blade seal ring of the present invention is separate type, can be needed to increase and decrease quantity according to pressure, and with rotating speed
Improve, sealing effect enhancing；There are gap, rotor to disturb in operation for blade and the sealing sheath of blade seal ring at the same time
It will not collide when dynamic；In addition blade seal ring blade direction has rotation direction, only need to be by leaf when rotor, which turns to, to be changed
Piece sealing ring is changed to the blade seal ring oppositely oriented with its blade, or blade seal ring (2) and backward vane are sealed
The position of ring (5) is exchanged, you can realizes identical sealing effect.
Brief description of the drawings
The attached drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the sealing principle schematic diagram described in the embodiment of the present invention one；
Fig. 2 is the assembling schematic diagram described in the embodiment of the present invention one；
Fig. 3 is the half-section diagram described in the embodiment of the present invention one；
Fig. 4 is the application example schematic diagram described in the embodiment of the present invention two；
Fig. 5 is the application example sealing principle schematic diagram described in the embodiment of the present invention two.
Description of reference numerals：
1- rotors；2- blade seal rings；3- locking nuts；4- sealing sheaths；21- air admission holes.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Embodiment one
As shown in Figure 1, the present invention is a kind of active labyrinth seal structure, including rotor 1, blade seal ring 2 are semicircle
Sealing sheath 4, the locking nut 3 of shaft end.Blade seal ring 2 is connected by spline and fastened with rotor 1, is superimposed leaf as needed
The quantity of piece sealing ring, 1 shaft end locking nut 3 of rotor fasten, then are buckled in blade seal ring with two semicircle sealing sheaths 4
On, the rectangular teeth on sealing sheath 4 intersects for blade, and blade seal ring rotation, blade seal ring are driven when rotor 1 rotates
Blade on 2 can form orientation air-flow in sealing passage.
Sealing left side is high-pressure side, and right side is low-pressure side, and gas can flow to low-pressure side from high-pressure side under normal conditions, cause
High side pressure loses or low-pressure lateral pressure rise, and when rotor 1 is rotated according to Fig. 1 directions, blade seal ring 2 is revolved with rotor
Turn, the blade on blade seal ring 2 makes the gas forced flow in labyrinth seal, and flow direction is high-pressure side, solves gas
The problem of largely being leaked during flowing.
As shown in Fig. 2, rotor 1 is connected with blade seal ring 2 using spline, the quantity of blade seal ring 2 can be according to both sides
Pressure differential needs to carry out quantitative increase and decrease, and with the raising of rotating speed, sealing effect enhancing, locking nut 3 and 1 axis of rotor
Thread fitting to be held, blade seal ring 2 is locked, sealing sheath 4 is two semicircle sheaths, and sealing tooth is equipped with sheath,
Seal tooth and 2 arranged crosswise of blade seal ring.2 blade direction of blade seal ring has rotation direction, when rotor 1, which turns to, to be changed,
Blade seal ring only need to be changed to the blade seal ring oppositely oriented with its blade, you can realize identical sealing effect.
As shown in figure 3, there are gap, rotor 1 to disturb in operation for the blade of blade seal ring 2 and sealing sheath 4
It will not collide when dynamic.
Embodiment two
As shown in Figure 4,5, gas is entered by the air admission hole 41 on sealing sheath 4, due to blade seal ring 2 and backward vane
Sealing ring 5 plays centrifugation to entering the gas in seal clearance, has reached sealing effect, will when rotor is oppositely oriented
The location swap of blade seal ring 2 and backward vane sealing ring 5.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (5)
- A kind of 1. active labyrinth seal structure, it is characterised in that：Active labyrinth seal structure, including rotor (1) are employed, Blade seal ring (2), locking nut (3), sealing sheath (4)；The blade seal ring (2) is set on the outside of the rotor (1), Blade seal ring (2) is equipped with uniformly distributed blade, and is fastened in the rotor (1) shaft end locking nut (3), sealing sheath (4) it is buckled on blade seal ring (2), the sealing tooth on sealing sheath (4) is used to intersect with blade,Direction blade on the blade seal ring (2) has rotation direction；Sealing sheath (4) middle upper portion is equipped with air admission hole (41), blade seal ring (2) rotation of air admission hole (41) both sides To opposite.
- A kind of 2. active labyrinth seal structure according to claim 1, it is characterised in that：The blade seal ring (2) Separate type is used, the spline being arranged in blade seal ring (2) is fastenedly connected with rotor (1).
- A kind of 3. active labyrinth seal structure according to claim 1, it is characterised in that：The sealing sheath (4) by Two semi-ring compositions.
- A kind of 4. active labyrinth seal structure according to claim 1, it is characterised in that：In the sealing sheath (4) The sealing tooth of side is rectangular seal tooth, the rectangular seal tooth and the blade arranged crosswise on sealing ring.
- A kind of 5. active labyrinth seal structure according to claim 1, it is characterised in that：The blade seal ring (2) Blade and sealing sheath (4) between be equipped with gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297833.8A CN105757257B (en) | 2016-05-06 | 2016-05-06 | A kind of active labyrinth seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297833.8A CN105757257B (en) | 2016-05-06 | 2016-05-06 | A kind of active labyrinth seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105757257A CN105757257A (en) | 2016-07-13 |
| CN105757257B true CN105757257B (en) | 2018-04-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610297833.8A Active CN105757257B (en) | 2016-05-06 | 2016-05-06 | A kind of active labyrinth seal structure |
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| Country | Link |
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| CN (1) | CN105757257B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3065483B1 (en) * | 2017-04-24 | 2020-08-07 | Safran Aircraft Engines | SEALING DEVICE BETWEEN ROTOR AND TURBOMACHINE STATOR |
| CN108869379B (en) * | 2018-05-02 | 2020-03-31 | 江苏大学 | Centrifugal pump sealing ring with axial guide vanes |
| CN109404058B (en) * | 2018-12-03 | 2024-01-16 | 河北国源电气股份有限公司 | Steam seal for steam turbine |
| GB2599648B (en) * | 2020-10-06 | 2023-03-22 | Caterpillar Motoren Gmbh & Co | Crankshaft seal unit for an internal combustion engine |
| CN113202928A (en) * | 2021-03-29 | 2021-08-03 | 东南大学 | Low-leakage wing-containing sealing structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205715684U (en) * | 2016-05-06 | 2016-11-23 | 亿昇(天津)科技有限公司 | A kind of active labyrinth seal structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6811154B2 (en) * | 2003-02-08 | 2004-11-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Noncontacting finger seal |
| CN101476622A (en) * | 2008-12-11 | 2009-07-08 | 北京中智渝桐节能设备有限公司 | Metal finger tip honeycomb sealing |
| JP4982476B2 (en) * | 2008-12-26 | 2012-07-25 | 株式会社日立製作所 | Radial flow type fluid machine |
| CN101749055A (en) * | 2009-12-25 | 2010-06-23 | 中国燃气涡轮研究院 | Involute-type fingertip sealing structure |
| CN201747663U (en) * | 2010-08-01 | 2011-02-16 | 湖北省风机厂有限公司 | Seal device of coke oven gas blower |
| CN104455465A (en) * | 2014-12-12 | 2015-03-25 | 北京凯特破碎机有限公司 | Composite labyrinth sealing device |
| CN104847689A (en) * | 2015-05-04 | 2015-08-19 | 亿昇(天津)科技有限公司 | Active centrifugal blower sealing structure |
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2016
- 2016-05-06 CN CN201610297833.8A patent/CN105757257B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205715684U (en) * | 2016-05-06 | 2016-11-23 | 亿昇(天津)科技有限公司 | A kind of active labyrinth seal structure |
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| Publication number | Publication date |
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| CN105757257A (en) | 2016-07-13 |
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