CN205715684U - A kind of active labyrinth seal structure - Google Patents
A kind of active labyrinth seal structure Download PDFInfo
- Publication number
- CN205715684U CN205715684U CN201620407376.9U CN201620407376U CN205715684U CN 205715684 U CN205715684 U CN 205715684U CN 201620407376 U CN201620407376 U CN 201620407376U CN 205715684 U CN205715684 U CN 205715684U
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- CN
- China
- Prior art keywords
- blade
- sealing
- seal ring
- active
- rotor
- 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.)
- Withdrawn - After Issue
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Abstract
This utility model provides a kind of active labyrinth seal structure, including rotor, blade seal ring, sealing sheath, locking nut；Blade seal ring is connected and rotor fastening by spline, the quantity of superposition blade seal ring as required, and rotor axle head locking nut fastens, then is buckled on blade seal ring with two semicircle sealing sheaths, and the rectangular teeth on sealing sheath is for intersecting with blade；Driving blade seal ring to rotate when the rotor rotates, the blade on sealing ring can form actively back draught in sealing passage, can effectively suppress gas to leak, and simple in construction, sealing effectiveness is more preferable.
Description
Technical field
This utility model belongs to rotating machinery sealing device field, especially relates to a kind of active labyrinth seal structure.
Background technology
Gland seal device is requisite sealing device in rotating machinery, generally uses labyrinth seal structure.In rotating machinery, due to rotor high speed rotating, and stator stationary, gap will be produced between the two, when device interior exists gas pressure difference with outside, will result in gas and flow in sealing, use traditional sealing structure, gas leakage will necessarily occur.
Summary of the invention
In view of this, this utility model is directed to a kind of active labyrinth seal structure, to solve to use traditional sealing structure, and the problem that gas leakage occurs.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of active labyrinth seal structure, it is characterised in that: have employed active labyrinth seal structure, including rotor (1), blade seal ring (2), locking nut (3), sealing sheath (4)；Described blade seal ring (2) is set in described rotor (1) outside, blade seal ring (2) is provided with uniform blade, and fasten at described rotor (1) axle head locking nut (3), sealing sheath (4) is buckled on blade seal ring (2), and the sealing tooth on sealing sheath (4) is for intersecting with blade.
Further, described blade seal ring (2) all uses separate type, and the spline being arranged in blade seal ring (2) is fastenedly connected with rotor (1).
Further, described sealing sheath (4) is made up of two semi-rings.
Further, the sealing tooth of described sealing sheath (4) inner side is rectangular seal tooth, described rectangular seal tooth and the blade arranged crosswise on sealing ring.
Further, it is provided with gap between blade and the sealing sheath (4) of described blade seal ring (2).
Further, the direction blade on described blade seal ring (2) has rotation direction.
Further, described sealing sheath (4) middle upper portion is provided with air inlet (41), and the blade seal ring (2) of described air inlet (41) both sides is oppositely oriented.
Relative to prior art, the active labyrinth seal structure of one described in the utility model has the advantage that
(1) the active labyrinth seal structure of one of the present invention, have employed active labyrinth seal structure, when the rotor rotates, blade seal ring rotates with rotor, blade on blade seal ring makes the gas forced flow in labyrinth seal, flow direction is high-pressure side, can effectively suppress gas to leak.
(2) blade seal ring of the present invention is separate type, can need to increase and decrease quantity according to pressure, and along with the raising of rotating speed, sealing effectiveness strengthens；All there is gap in the blade of blade seal ring and sealing sheath simultaneously, and rotor is in operation and occurs also will not collide during disturbance；Additionally blade seal ring blade direction has rotation direction, when rotor turns to change, only blade seal ring need to be replaced by the blade seal ring oppositely oriented with its blade, or the position of blade seal ring (2) with backward vane sealing ring (5) is exchanged, identical sealing effectiveness can be realized.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the sealing principle schematic diagram described in this utility model embodiment one；
Fig. 2 is the assembling schematic diagram described in this utility model embodiment one；
Fig. 3 is partly to cut open schematic diagram described in this utility model embodiment one；
Fig. 4 is the application example schematic diagram described in this utility model embodiment two；
Fig. 5 is the application example sealing principle schematic diagram described in this utility model embodiment two.
Description of reference numerals:
1-rotor；2-blade seal ring；3-locking nut；4-sealing sheath；41-air inlet.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood by concrete condition.
Embodiment one
As it is shown in figure 1, this utility model is a kind of active labyrinth seal structure, including rotor 1, blade seal ring 2, semicircular sealing sheath 4, the locking nut 3 of axle head.Blade seal ring 2 is fastened with rotor 1 by spline connection, the quantity of superposition blade seal ring as required, rotor 1 axle head locking nut 3 fastens, it is buckled on blade seal ring with two semicircle sealing sheaths 4 again, rectangular teeth on sealing sheath 4 intersects for blade, drive blade seal ring to rotate when rotor 1 rotates, the blade on blade seal ring 2 can form orientation air-flow in sealing passage.
It it is high-pressure side on the left of sealing, right side is low-pressure side, gas can flow to low-pressure side from high-pressure side under normal circumstances, high side pressure loss or low-pressure lateral pressure is caused to raise, when rotor 1 rotates according to Fig. 1 direction, blade seal ring 2 rotates with rotor, and the blade on blade seal ring 2 makes the gas forced flow in labyrinth seal, flow direction is high-pressure side, the problem leaked in a large number when solving gas flowing.
As shown in Figure 2, rotor 1 uses spline to be connected with blade seal ring 2, the quantity of blade seal ring 2 can according to pressure at both sides difference need carry out quantitative increase and decrease, and along with the raising of rotating speed, sealing effectiveness strengthens, locking nut 3 and rotor 1 axle head threaded engagement, blade seal ring 2 is locked, sealing sheath 4 is two semicircle sheaths, is provided with sealing tooth in sheath, seals tooth and blade seal ring 2 arranged crosswise.Blade seal ring 2 blade direction has rotation direction, when rotor 1 turns to change, only blade seal ring need to be replaced by the blade seal ring oppositely oriented with its blade, can realize identical sealing effectiveness.
As it is shown on figure 3, the blade of blade seal ring 2 and sealing sheath 4 all exist gap, rotor 1 is in operation and occurs also will not collide during disturbance.
Embodiment two
As shown in Figure 4,5, gas is entered by the air inlet 41 on sealing sheath 4, owing to the gas entered in seal clearance is played centrifugation with backward vane sealing ring 5 by blade seal ring 2, reach sealing effectiveness, when rotor is oppositely oriented, by the location swap of blade seal ring 2 with backward vane sealing ring 5.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (7)
1. an active labyrinth seal structure, it is characterised in that: have employed active labyrinth seal knot
Structure, including rotor (1), blade seal ring (2), locking nut (3), sealing sheath (4)；
Described blade seal ring (2) is set in described rotor (1) outside, and blade seal ring (2) is provided with
Uniform blade, and fasten at described rotor (1) axle head locking nut (3), sealing sheath (4)
Being buckled on blade seal ring (2), the sealing tooth on sealing sheath (4) is for intersecting with blade.
The active labyrinth seal structure of one the most according to claim 1, it is characterised in that: institute
State blade seal ring (2) and all use separate type, be arranged on the spline in blade seal ring (2) and rotor
(1) it is fastenedly connected.
The active labyrinth seal structure of one the most according to claim 1, it is characterised in that: institute
State sealing sheath (4) to be made up of two semi-rings.
The active labyrinth seal structure of one the most according to claim 1, it is characterised in that: institute
The sealing tooth stating sealing sheath (4) inner side is rectangular seal tooth, on described rectangular seal tooth and sealing ring
Blade arranged crosswise.
The active labyrinth seal structure of one the most according to claim 1, it is characterised in that: institute
State and be provided with gap between the blade of blade seal ring (2) and sealing sheath (4).
The active labyrinth seal structure of one the most according to claim 1, it is characterised in that: institute
The direction blade stated on blade seal ring (2) has rotation direction.
The active labyrinth seal structure of one the most according to claim 6, it is characterised in that: institute
State sealing sheath (4) middle upper portion and be provided with air inlet (41), the leaf of described air inlet (41) both sides
Sheet sealing ring (2) is oppositely oriented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407376.9U CN205715684U (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 |
|---|---|---|---|
| CN201620407376.9U CN205715684U (en) | 2016-05-06 | 2016-05-06 | A kind of active labyrinth seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715684U true CN205715684U (en) | 2016-11-23 |
Family
ID=57304710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407376.9U Withdrawn - After Issue CN205715684U (en) | 2016-05-06 | 2016-05-06 | A kind of active labyrinth seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757257A (en) * | 2016-05-06 | 2016-07-13 | 亿昇(天津)科技有限公司 | Active labyrinth seal structure |
| CN107314114A (en) * | 2017-08-15 | 2017-11-03 | 沈阳航空航天大学 | A kind of comb tooth sealing structure |
-
2016
- 2016-05-06 CN CN201620407376.9U patent/CN205715684U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757257A (en) * | 2016-05-06 | 2016-07-13 | 亿昇(天津)科技有限公司 | Active labyrinth seal structure |
| CN105757257B (en) * | 2016-05-06 | 2018-04-17 | 亿昇(天津)科技有限公司 | A kind of active labyrinth seal structure |
| CN107314114A (en) * | 2017-08-15 | 2017-11-03 | 沈阳航空航天大学 | A kind of comb tooth sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180417 |