CN109322710A - A kind of inclined ellipse pocket sealing structure adapting to rotor eddy - Google Patents
A kind of inclined ellipse pocket sealing structure adapting to rotor eddy Download PDFInfo
- Publication number
- CN109322710A CN109322710A CN201811230939.1A CN201811230939A CN109322710A CN 109322710 A CN109322710 A CN 109322710A CN 201811230939 A CN201811230939 A CN 201811230939A CN 109322710 A CN109322710 A CN 109322710A
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- CN
- China
- Prior art keywords
- rotor
- sealing
- partition
- inclined ellipse
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
Abstract
The purpose of the present invention is to provide a kind of inclined ellipse pocket sealing structures for adapting to rotor eddy, including cylindrical shell, sealing tooth is set by layers in cylindrical shell from top to bottom, partition is set up at interval of one layer sealing its week of tooth, to form main inclined ellipse pocket on the sealing tooth of setting partition, two secondary chambers are formed on the sealing tooth adjacent with main inclined ellipse pocket.The present invention realizes low leakage by the bag-shaped damping seal with derotation partition, strong to dissipate, and adapts to the gas-dynamic behaviour of rotor eddy characteristic.Realize that height obturages efficiency in the dissipation effect of axially throttling and circumferential chamber, suitable for obturaging demand under bigger pressure difference, the composite structure of main, secondary pocket is equipped with derotation partition largely reduces air-flow in annular chamber indoor circumferential speed while realizing cutting function, and the too fast induced draft exciting force of circumferential speed is avoided to induce rotor unstability.
Description
Technical field
The present invention relates to a kind of sealing structures, specifically applied to the rotor seal of quick runner machinery, axis
End sealing, ring packing.
Background technique
The axial leakage of control turbomachine is the effective method for increasing overall efficiency.It applies in rotor seal
Non-contacting seal is using very extensive.The traditional method of control leakage increases seal length, by the increase control for sealing series
Leakage rate processed.It is then more universal by changing the method for sealing toothing and arrangement mode, it is therefore an objective to increase the section of sealing tooth
Flow complicated wraps correction dissipation of energy effect in effect and seal chamber.
In order to reduce the adverse effect of the axial leakage in seal clearance, modern turbomachine is by changing sealing arrangement side
Formula reduces leakage rate.Welded seal ring gear easily causes rotor quality bias on rotor, easily leads to rotor oscillation aggravation, this is right
It is extremely dangerous in rotating machinery.The effective length that change based on sealing ring gear shape can increase sealing reduces sealing series,
But often causes to seal tooth stress concentration, reduce the sealing tooth service life, the damage for sealing tooth can increase seal clearance and to leak
Amount abruptly increase even causes even more serious accident.Rotor seal is since its gap is minimum, and the whirling motion of rotor is for sealing flow field
Change be it is conclusive, sealing flow field to rotor eddy feedback be also it is violent and complicated.The design of sealing is not simple
Mechanical design structure design, it is necessary to consider sealing-rotor direct interaction principle, the carrier of sealing and rotor interaction
Flow field is exactly sealed, could be from flowing and breakthrough and innovation on sealing mechanism from the angle in sealing flow field, and then design effective
, efficient, reliable sealing element.
The problem of more highlighting in rotor-sealing problem is that the effect to the power of rotor of sealing and this power are steady to rotor
Fixed contribution.The applying person of this power is flow field, and the person of being applied is rotor, so leaving for going deep into machine from the angle in sealing flow field
Reason is unquestionable.Traditional sealing tooth crest is co-located in a cylindrical face surface, this structure and true whirling motion rotor surface more
Distance can exist two it is extreme, the first extreme case is that rotor rubbing sealing tooth surface causes sealing part abrasion serious, is saved
Stream effect substantially reduces, and falls the serious phenomenons such as tooth.Second of extreme case is that rotor eddy is much larger than to certain positions, gap
Design gaps, leakage rate greatly increase, and obturage effect substantial deviation design value.
Summary of the invention
The purpose of the present invention is to provide based on rotor-sealing flowing field stability, a kind of low adaptation for leaking, damping greatly
The inclined ellipse pocket sealing structure of rotor eddy.
The object of the present invention is achieved like this:
A kind of inclined ellipse pocket sealing structure for adapting to rotor eddy of the present invention, it is characterized in that: including cylindricality
Shell is set by layers sealing tooth in cylindrical shell from top to bottom, sets up partition at interval of one layer sealing its week of tooth, thus
Main inclined ellipse pocket is formed on the sealing tooth of setting partition, adjacent with main inclined ellipse pocket close
Two secondary chambers are formed on envelope tooth.
The present invention may also include:
1, two secondary chamber is secondary perforation chamber.
2, partition is also provided on the adjacent sealing tooth of main inclined ellipse pocket, two secondary chambers formed are two
Secondary inclined ellipse pocket.
3, the derotation partition of secondary inclined ellipse pocket in angle and quantity with adjacent main inclined ellipse
Pocket is consistent.
4, the partition is derotation partition, and derotation partition is hexahedron structure, i.e. its layout angle and rotor rotation side
To on the contrary, the established angle of derotation partition is 5-15 °, wherein established angle is the center line of derotation partition center molded line and cylindrical shell
Angle.
5, it is on a cylinder at the top of the tooth tip and partition of every layer of sealing tooth, which is suitable for rotor eddy
Elliptic cylinder, this elliptical major radius in elliptic cylinder cross section is design tip clearance, rotor radius and rotor eddy track
The summation of major radius, this elliptical short radius in elliptic cylinder cross section are design tip clearance, rotor radius and rotor eddy rail
The summation of mark short radius.
Present invention has an advantage that the present invention obturages mechanism and Airflow Exciting-Vibration Force machine from turbomachine rotor-seal system
Reason is set out, and realizes low leakage by the bag-shaped damping seal with derotation partition, strong to dissipate, and adapts to the gas of rotor eddy characteristic
Dynamic characteristics.Realize that height obturages efficiency in the dissipation effect of axially throttling and circumferential chamber, suitable for obturaging under bigger pressure difference
Demand, the composite structure of main, secondary pocket are equipped with derotation partition and largely reduce while realizing cutting function
Air-flow avoids the too fast induced draft exciting force of circumferential speed from inducing rotor unstability in the indoor circumferential speed of annular chamber.Except this it
Outside, have rotor dynamic theory it is found that multifrequency rotor eddy track be ellipse, in the present invention chamber depth is designed as fitting
For the ellipsoid of rotor eddy characteristic, when can keep rotor eddy in this way, dynamic pressure radiating area is more advised with convergence region
Then, tip clearance is reduced to the sensibility of rotor eddy, guarantees that rotor is fed back to surely rotor in whirling motion flow field complete cycle
Fixed, another big advantage of the present invention is that sealing tooth is avoided to scratch and wear with whirling motion rotor, increase service life of sealing tooth with reliably
Property reduce, avoid obturaging the severe phenomenon such as failure and occur.
Detailed description of the invention
Fig. 1 is rotor eddy track and sealing flow field patterns schematic diagram；
Fig. 2 a is the inclined ellipse pocket sealing structure front view for adapting to rotor eddy, and Fig. 2 b is to adapt to rotor whirlpool
Dynamic inclined ellipse pocket sealing structure cross-sectional view；
Fig. 3 is the inclined ellipse pocket sealing structure top view for adapting to rotor eddy；
Fig. 4 a is the inclined ellipse pocket sealing structure three-dimensional figure for adapting to rotor eddy, and Fig. 4 b is the part of Fig. 4 a
Enlarged drawing；
Fig. 5 a is the inclined ellipse pocket sealing structure front view for adapting to low frequency of vortex motion rotor, and Fig. 5 b is to adapt to
The inclined ellipse pocket sealing structure cross-sectional view of low frequency of vortex motion rotor；
Fig. 6 is the inclined ellipse pocket sealing structure top view for adapting to low frequency of vortex motion rotor；
Fig. 7 a is the inclined ellipse pocket sealing structure three-dimensional figure for adapting to low frequency of vortex motion rotor, and Fig. 7 b is Fig. 7 a
Partial enlarged view.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with the positional relationship of rotor 1 Yu sealing element 2 in Fig. 1-7, Fig. 1 and Fig. 2, is given, rotor 1 and sealing 2 are wherein
There are tip clearances 3, and there are several chambers 4.It is disposed with sealing tooth 5 upwards in 2 axis of sealing structure, is disposed with derotation in circumferential direction
Partition 6 forms main inclined ellipse pocket 7 and two due to sealing the arrangement of tooth 5 and derotation partition in sealing structure 2
Secondary inclined ellipse pocket 8.
As shown in fig. 1, the positional relationship for illustrating rotor 1 and sealing 2 for clarity, is illustrated using biggish gap
Purpose of the invention.The home position of rotor 1 is given in Fig. 1, that is, the position of rotor when whirling motion is not present, 1 center of rotor is
O, after rotor high speed rotation, whirling motion phenomenon occurs for rotor 1, and by taking a certain moment as an example, 1 center O of rotor shifts, at this time
The center of rotor 1 is O '.1 whirl orbit center of rotor is coordinate origin, and 1 whirl orbit of rotor is as shown in the figure.Applicant will be true
Real-turn 1 whirl orbit Rational Simplification of son is that long axis is a, and short axle is the elliptical orbit of b.The wherein amplitude of rotor eddy and track
It can use rotor dynamic theory or vialog estimated and measured.Sealing tooth tip 9 and rotor surface gap is variable x, is one
A amount being closely related with whirling motion time, frequency of vortex motion, whirling motion amplitude.In this application, a kind of adaptation rotor eddy is proposed
Inclined ellipse pocket sealing structure, the first purpose mainly realized is reduced to allow flow field more stable and uniform
Gap x circumferentially non-uniform fluctuation, the premise for making sealing structure interior flow field stable are that flow field structure will adapt to rotor eddy
Rule.Sealed chamber bottom 10 is at a distance from sealing tooth tip 9 as shown in variable chamber depth h in Fig. 2, and wherein chamber depth h is
Related with the whirl orbit of rotor 1, it is to adapt to rotor eddy characteristic that mainly and the long axis a of whirl orbit is related with short axle b
And propose.
Fig. 2 is the main view and cross-sectional view for sealing 2, wherein 6 quantity of derotation partition circumferentially is 6-10, in Fig. 2
Shown in derotation partition quantity be 8, be evenly arranged circumferentially.Vertically, sealing 2 arranges sealing tooth 5 total 8 altogether
It is a, amount to and forms 32 main inclined ellipse pockets 7 and 24 secondary inclined ellipse pockets 8.Wherein main inclined
Derotation partition 6 is all disposed in ellipse pocket 7 and secondary inclined ellipse pocket 8.The wherein peace of derotation partition 6
Filling angle is 5-15 °.Wherein the definition of established angle is the angle of the center line of partition center molded line and sealing 2.In Fig. 2,2 are sealed
Left side is high-pressure side, and right side is low-pressure side, i.e., left side is high-pressure inlet, and right side is low tension outlet boundary.Intake method is level
Air inlet, 6 layout angles of derotation partition and rotor direction of rotation on the contrary, therefore referred to as derotation partition, in rotor high speed rotation table
Under the drive in face, air-flow can have a higher tangential velocity, initiatively go to reduce this by the arrangement of derotation partition and cut
Formation and development to speed.The top view and 3 dimensional drawing and partial enlarged view of sealing 2 are given in Fig. 3 and 4.From Fig. 3-
In 4 as can be seen that all circular passages are all disposed with derotation partition 6, so 32 main inclined ellipses of total formation are bag-shaped
The secondary inclined ellipse pocket 8 of chamber 7 and 24.The top of all sealing tooth tip 9 and derotation partition 6 is at one
On anchor ring, and this anchor ring is ellipse ring surface, is the ellipse anchor ring suitable for rotor eddy, ensure that rotor by its whirling motion spy
Property caused by whirl orbit cause gap uneven, the non-uniform problem of chamber depth is addressed, this be all to provide one it is steady
The premise in fixed sealing flow field.
It is to be suitable for revolving speed not being shown in Fig. 5-7 under very high operating condition, a kind of inclined ellipse adapting to rotor eddy
Main view, cross-sectional view, top view, three-dimensional figure and the partial enlarged view of pocket sealing structure, specific embodiment with
Principle is consistent with above content main body, for convenience of distinguishing, is named as 2 ', difference is: the difference of applicable working condition first, compared to figure
Structure shown in 2-4, sealing structure shown in Fig. 5-7 are to be suitable for lower speed conditions, are secondary perforation chamber in two secondary chambers
11, the derotation partition 6 for being arranged in circumferencial direction is had no, that is, secondary inclined ellipse pocket 8, entire sealed chamber is not present
32 main inclined ellipse pockets 7 and 3 secondary perforation chambers 11 are formed by total.The sealing structure of such simplification version exists
24 derotation partitions 6 are arranged due to reducing, the leakage rate of sealing 2 ' is compared with sealing element 2 high 3%, this is because reducing pocket-like chamber
The quantity of room reduces the increase that chamber interior vortex dissipates and then leads to leakage rate.On rotor dynamic behavior, sealing 2 '
Low 5% of effective damping coefficient Ceff* compared with sealing 2 in rotor dynamic behavior coefficient.The sharpest edges of sealing 2 ' are that it is light
Quantization, due to reducing 24 derotation partitions, for restricted to total quality or have under conditions of light-weight design demand more
Add applicable.
The present invention is a kind of with low leakage, damps greatly, can efficiently inhibit rotor oscillation induced draft exciting force
A kind of bag-shaped sealing of inclined ellipse is disposed with axially aligned main inclined ellipse pocket and two in stator side
Secondary inclined ellipse pocket, pocket are formed as the derotation partition arranged in flow field channel.Wherein, major and minor bag
Shape chamber depth is to adapt to rotor eddy track, and all seal clearances and flow field depth is kept to keep stable homogeneous.From working medium
The angle of flowing is said, including air inlet restriction section, pocket dissipation section, intergrade restriction portion, final stage restriction portion.Wherein throttle tooth
Leakage rate is greatly reduced with dissipation chamber combine, derotation partition reduces air-flow circumferential speed, and fundamentally inhibits to induce air-flow
The root of exciting force avoids Airflow Exciting-Vibration Force to cause rotor unstability from root, leads to a disaster.In addition, being suitable for whirling motion rotor
The bag-shaped slot of ellipse be for the first time for whirling motion rotor track carry out gap be designed, avoid gap and flow field patterns with turn
Sub- whirling motion acute variation bring flow field unstability is increased sharply, and rotor wall surface is avoided to scratch and wear with tooth tip, and utilization is bag-shaped
Chamber depth design is effectively organized to sealing aerodynamic force, and the gas resultant force of vibration induced generation is reasonably fed back to
Vibrating rotator to enhance its high damping characteristic, and then improves the stability of rotor seal structure.
Main chamber is inclined ellipse pocket, and two secondary chambers can be inclined ellipse pocket or through chamber
Cell structure.Main, two secondary chambers are alternately arranged along axial direction.It is main inclined ellipse pocket first, then since high-pressure side
Sequentially enter the chamber in downstream again into secondary inclined ellipse pocket or through chamber structure.Axial direction side in the present invention
It is 8 to the sealing throttling number of teeth is disposed with altogether, forms 4 grades of main inclined ellipse pockets and 3 grades of secondary inclined ellipses are bag-shaped
It is 8 that chamber or axial direction are disposed with the sealing throttling number of teeth altogether, forms 4 grades of main inclined ellipse pockets and 3 grades of perforations
Formula chamber.
It is disposed with derotation partition inside 4 grades of main inclined ellipse pockets, is arranged circumferentially, quantity is 8-12；
Derotation partition is hexahedron structure, and setting angle α is 5 °~15 °, and airintake direction angle is opposite with rotor direction of rotation.Instead
It revolves at the top of partition with sealing throttling tooth on an elliptic cylinder.
It is disposed with derotation partition inside 3 grades of secondary inclined ellipse pockets, is arranged circumferentially, quantity 8-12
It is a；Derotation partition is hexahedron structure, and setting angle α is 5 °~15 °, airintake direction angle and rotor direction of rotation phase
Instead.At the top of derotation partition with sealing throttling tooth on an elliptic cylinder.In the secondary inclined ellipse pocket of described 3 grades
The derotation partition of portion's arrangement is consistent in quantity with 4 grades of main inclined ellipse pockets in angle.It is oblique forming 4 grades of masters
In formula ellipse pocket and 3 grades of through chamber structures, 3 grades of through chamber structures have no the presence of derotation partition, entirely
Circumferential direction is perforation chamber.
The depth of 4 grades of main inclined ellipse pockets and 3 grades of secondary inclined ellipse pockets is in the circumferential not
Be it is constant, the depth of chamber depth is to be determined by sealing throttling tooth with the same elliptic cylinder where derotation partition top plate
, it avoids rotor and scratches and wear with the different sealing toothing of height under the conditions of whirling motion.
The depth of 4 grades of main inclined ellipse pockets and 3 grades of through chambers is not constant, chamber in the circumferential
The depth of depth is determined by the same elliptic cylinder where sealing throttling tooth and derotation partition top plate, is avoided rotor and is existed
It scratches and wears with the different sealing toothing of height under the conditions of whirling motion.
The principle of the present invention is:
The principle of the present invention is that throttling, circumferentially throttling is combined with derotation partition using sealing gear-shaft, is cooperated to sealed chamber
Internal radial dimension of reasonable utilization takes into account sealing element while throttling is sealed with realization under the effect of vortex dissipative coupling
Rotor dynamics, invented it is a kind of adapt to rotor eddy inclined ellipse pocket sealing structure.Turn in high speed
For son with the complicated coupling in sealing flow field, the Airflow Exciting-Vibration Force of sealing flow field induction easily causes rotor unstability, leads to thing
Therefore.Using novel sealing structure realize enhancing rotor stability be great cost performance, efficiently with reliable method.Before applicant
Phase studies have shown that causing the source of rotor unstability is the high speed tangential velocity inside sealed chamber, in the present invention, will it is a series of instead
Baffle arrangement is revolved in circumferential ring cavity, and a long and narrow perforation ring cavity is separated into several small bag-shaped chambers, is fully slowed down
The circumferential speed of chamber interior, the Maelstrom for making this internal are pulsed in very low frequency, far from rotor eddy frequency, in turn
Do not cause to seal flow field and whirling motion rotor resonance, dramatic impact rotor stability.Other than arranging derotation partition, in order to enable
Flow field is sealed to the feedback stability of rotor eddy, pocket inner bottom surface is set as being applicable in the ellipse of rotor eddy by applicant
Face.The original intention done so is since the whirl orbit of multifrequency whirling motion rotor is mostly oval rather than round.Constructed pocket-like chamber
Room depth is not a steady state value, and seals and be co-located in an elliptic cylinder at the top of tooth top and derotation partition.This sufficiently reduces
The fluctuation of gap width of the tooth top apart from rotor surface as caused by the variation of rotor eddy track major and minor axis, so that gap and chamber
Chamber interior flow field more tends to be uniform and stable, while interior flow field is stablized and adapts to rotor eddy.By two kinds described above
Major Technology realizes the relatively stable of the sealing flow field in the case where this sealing structure is corresponding, reduces flow field feedback to tip clearance
Sensibility, enhance to the applicability of whirling motion rotor and increase its practicability used in turbomachine shaft end seal, enhance close
Sealing property and damping characteristic, while the structure can reduce rotor eddy scratching and touching and rub to sealing tooth top, increase sealing tooth
Service life.
Claims (7)
1. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy, it is characterized in that: including cylindrical shell, cylindricality
Sealing tooth is set by layers in shell from top to bottom, sets up partition at interval of one layer sealing its week of tooth, thus setting every
Main inclined ellipse pocket is formed on the sealing tooth of plate, the shape on the sealing tooth adjacent with main inclined ellipse pocket
At two secondary chambers.
2. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 1, feature
Be: two secondary chamber is secondary perforation chamber.
3. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 1, feature
It is: is also provided with partition on the adjacent sealing tooth of main inclined ellipse pocket, two secondary chambers formed is secondary inclined
Ellipse pocket.
4. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 3, feature
Be: the derotation partition of secondary inclined ellipse pocket in angle and quantity with adjacent main inclined ellipse pocket
It is consistent.
5. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 1 to 4,
It is characterized in that: the partition is derotation partition, derotation partition is hexahedron structure, i.e. its layout angle and rotor direction of rotation
On the contrary, the established angle of derotation partition is 5-15 °, wherein established angle is the center line of derotation partition center molded line and cylindrical shell
Angle.
6. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 1 to 4,
It is characterized in that: being on a cylinder at the top of the tooth tip and partition of every layer of sealing tooth, which is suitable for rotor eddy
Elliptic cylinder, this elliptical major radius in elliptic cylinder cross section is design tip clearance, rotor radius and rotor eddy track
The summation of major radius, this elliptical short radius in elliptic cylinder cross section are design tip clearance, rotor radius and rotor eddy rail
The summation of mark short radius.
7. a kind of inclined ellipse pocket sealing structure for adapting to rotor eddy according to claim 5, feature
It is: is on a cylinder at the top of the tooth tip and partition of every layer of sealing tooth, which is the ellipse suitable for rotor eddy
Cylinder, this elliptical major radius in elliptic cylinder cross section are design tip clearance, rotor radius and rotor eddy track major radius
Summation, this elliptical short radius in elliptic cylinder cross section is that design tip clearance, rotor radius and rotor eddy track are short by half
The summation of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230939.1A CN109322710A (en) | 2018-10-22 | 2018-10-22 | A kind of inclined ellipse pocket sealing structure adapting to rotor eddy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230939.1A CN109322710A (en) | 2018-10-22 | 2018-10-22 | A kind of inclined ellipse pocket sealing structure adapting to rotor eddy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109322710A true CN109322710A (en) | 2019-02-12 |
Family
ID=65262886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230939.1A Pending CN109322710A (en) | 2018-10-22 | 2018-10-22 | A kind of inclined ellipse pocket sealing structure adapting to rotor eddy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109322710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163213A (en) * | 2022-08-17 | 2022-10-11 | 东方电气集团东方汽轮机有限公司 | Rotary power generation equipment with isolation steam seal structure |
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|---|---|---|---|---|
| US3476396A (en) * | 1964-04-14 | 1969-11-04 | Daimler Benz Ag | Shaft seal with return rifling |
| DE2000314A1 (en) * | 1970-01-05 | 1971-07-15 | Ulrich Hundrieser | Gap sealing between stator and rotor in compressors and turbines |
| SU1118827A1 (en) * | 1981-12-25 | 1984-10-15 | Сумский Филиал Харьковского Ордена Ленина Политехнического Института Им.В.И.Ленина | Labyrinth seal |
| US5088889A (en) * | 1985-02-16 | 1992-02-18 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Seal for a flow machine |
| WO1994016251A1 (en) * | 1993-01-08 | 1994-07-21 | The Texas A&M University System | Pressure damper seals |
| US5707064A (en) * | 1993-01-08 | 1998-01-13 | The Texas A&M University System | Modulated pressure damper seal |
| US5794942A (en) * | 1993-01-08 | 1998-08-18 | The Texas A&M University System | Modulated pressure damper seals |
| EP1734292A1 (en) * | 2005-06-13 | 2006-12-20 | Siemens Aktiengesellschaft | Sealing means for a turbomachine |
| CN101382077A (en) * | 2007-09-04 | 2009-03-11 | 通用电气公司 | Labyrinth compression seal and turbine incorporating the same |
| US20160195137A1 (en) * | 2013-09-30 | 2016-07-07 | Siemens Aktiengesellschaft | Abradable seal and sealing arrangement |
| CN108331783A (en) * | 2018-02-24 | 2018-07-27 | 西安交通大学 | A kind of orthotropy rotary seal structure |
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2018
- 2018-10-22 CN CN201811230939.1A patent/CN109322710A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476396A (en) * | 1964-04-14 | 1969-11-04 | Daimler Benz Ag | Shaft seal with return rifling |
| DE2000314A1 (en) * | 1970-01-05 | 1971-07-15 | Ulrich Hundrieser | Gap sealing between stator and rotor in compressors and turbines |
| SU1118827A1 (en) * | 1981-12-25 | 1984-10-15 | Сумский Филиал Харьковского Ордена Ленина Политехнического Института Им.В.И.Ленина | Labyrinth seal |
| US5088889A (en) * | 1985-02-16 | 1992-02-18 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Seal for a flow machine |
| WO1994016251A1 (en) * | 1993-01-08 | 1994-07-21 | The Texas A&M University System | Pressure damper seals |
| US5707064A (en) * | 1993-01-08 | 1998-01-13 | The Texas A&M University System | Modulated pressure damper seal |
| US5794942A (en) * | 1993-01-08 | 1998-08-18 | The Texas A&M University System | Modulated pressure damper seals |
| EP1734292A1 (en) * | 2005-06-13 | 2006-12-20 | Siemens Aktiengesellschaft | Sealing means for a turbomachine |
| CN101382077A (en) * | 2007-09-04 | 2009-03-11 | 通用电气公司 | Labyrinth compression seal and turbine incorporating the same |
| US20160195137A1 (en) * | 2013-09-30 | 2016-07-07 | Siemens Aktiengesellschaft | Abradable seal and sealing arrangement |
| CN108331783A (en) * | 2018-02-24 | 2018-07-27 | 西安交通大学 | A kind of orthotropy rotary seal structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163213A (en) * | 2022-08-17 | 2022-10-11 | 东方电气集团东方汽轮机有限公司 | Rotary power generation equipment with isolation steam seal structure |
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