CN110206592A - A kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery - Google Patents
A kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery Download PDFInfo
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- CN110206592A CN110206592A CN201910482517.1A CN201910482517A CN110206592A CN 110206592 A CN110206592 A CN 110206592A CN 201910482517 A CN201910482517 A CN 201910482517A CN 110206592 A CN110206592 A CN 110206592A
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- Prior art keywords
- sealing
- stator
- impeller
- tooth
- wheel
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Classifications
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- 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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/06—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially radially
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- 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
- 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
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/224—Carbon, e.g. graphite
Abstract
The invention discloses a kind of high temperature high voltage resistant Unitary Impeller-sealing structures suitable for radial flow impeller machinery, including stator blade, movable vane, shell, wheel back, wheel cap, canned rotor and sealing stator；Wherein, several stator blades are fixed in inner walls, and are evenly distributed on impeller periphery, and several movable vanes are evenly arranged in wheel back front；Wheel cap is fitted closely with stator blade, forms stator blade runner；Wheel cap and movable vane clearance fit form movable vane runner；Wheel cap front end extended segment constitutes steam output chamber room；Canned rotor is arranged in the wheel back back side, and sealing stator is fixed on shell, and Unitary Impeller-sealing structure is collectively formed in canned rotor and sealing stator；Leakage gap is collectively formed between canned rotor and sealing stator and between wheel back and sealing stator and shell.The present invention has the advantages that abrasion influences small, high temperature high voltage resistant, be a kind of simple structure, safety and economy it is high, can balancing axial thrust impeller-seal-integrated type structure, have broad application prospects.
Description
Technical field
The present invention relates to a kind of turbomachine sealing structure, in particular to a kind of resistance to height suitable for radial flow impeller machinery
Warm high pressure Unitary Impeller-sealing structure.
Background technique
Compared with axial flow impeller machine, radial flow impeller machinery is with compact-sized, manufacturing process is simple, low cost
It is honest and clean, and the advantages that still can get greater efficiency under design condition when flow is smaller.Therefore, rapid with engineering technology
Development, radial flow impeller machinery is widely used in, low power power device.Labyrinth sealing is a kind of traditional sealing
Mode is currently still the widely applied sealing side of turbomachine since it has many advantages, such as structure is simple, cost is relatively low
Formula.
Usual radial flow impeller machinery has the characteristics that size is small, revolving speed is high, its design speed in certain application scenarios
Ten tens of thousands of turns even as high as per minute.Under the conditions of high-revolving, common axle end sealing device be no longer satisfied leakproofness and
The demand of safety.Theoretically for reduce air loss, can minimize sealing tooth and rotor surface radial clearance, but
Unit starting and shutdown cross critical speed constantly all, and the Oscillation Amplitude of rotor increases, and the amplitude especially in the middle part of rotor is maximum,
When rotor Oscillation Amplitude be more than seal clearance value, will with sealing tooth touch mill.Touching mill will make to seal tooth points wear, become
Shape even loses sealing function, touches mill moment and will generate amount of heat at sealing tooth and shaft contacts, keeps rotor surface local
Overheat, it is possible to cause the major accident of shaft bending.Particularly, when the Temperature of Working and very high pressure in turbomachine,
Swollen difference occurs for stator and rotor, and sealing tooth changes relative to the position of boss.Meanwhile biggish axial projective area will
Huge axial thrust loads are generated, and then generate axial float.This will so that air leakage increase, or even destroy shaft end seal,
The leakproofness of entire power device and safety are severely impacted.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of resistance to height suitable for radial flow impeller machinery
Warm high pressure Unitary Impeller-sealing structure has the advantages that abrasion influences small, high temperature high voltage resistant, is that a kind of structure is simple, pacifies
Full property and economy it is high, can balancing axial thrust impeller-seal-integrated type structure, have broad application prospects.
The present invention adopts the following technical scheme that realize:
A kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery, including it is stator blade, dynamic
Leaf, shell, wheel back, wheel cap, canned rotor and sealing stator；Wherein,
Several stator blades are fixed in inner walls, and are evenly distributed on impeller periphery, and several movable vanes are evenly arranged in wheel back
Front；Wheel cap is fitted closely with stator blade, forms stator blade runner；Wheel cap and movable vane clearance fit form movable vane runner；Wheel cap front end
Extended segment constitutes steam output chamber room；Canned rotor be arranged in wheel back the back side, sealing stator be fixed in inner walls, canned rotor with
Stator blind-mate is sealed, Unitary Impeller-sealing structure is collectively formed；Between canned rotor and sealing stator and take turns
Leakage gap is collectively formed between back and sealing stator and shell.
A further improvement of the present invention lies in that canned rotor is connected using axial cone boss structure, canned rotor and wheel back
The ratio between root diameter (RD) and the wheel back outer diameter for meeting place are 0.2~0.8, and the ratio between top diameter and root diameter (RD) of canned rotor are 0.3
~0.7, the ratio between axial length and wheel back outer diameter of canned rotor are 0.3~0.7.
A further improvement of the present invention lies in that canned rotor surface layout has sealing tooth, the arrangement number for sealing tooth is 4~
15, the ratio between transverse tooth thickness and tooth height of tooth are sealed between 0.1~2.
A further improvement of the present invention lies in that sealing tooth includes stage teeth, tilted plat tooth, side tooth and vertical tree structure.
A further improvement of the present invention lies in that sealing stator uses replaceable structure, it is fixed on shell by positioning pin,
It seals stator and uses stepped construction, step number is corresponding with the sealing number of tooth, and the difference in height of adjacent steps is sealing tooth tooth
High 0.1~0.5.
A further improvement of the present invention lies in that sealing stator is made of high temperature resistant graphite material.
A further improvement of the present invention lies in that positioning pin quantity is 2~8.
The present invention has following beneficial technical effect:
1, the present invention has rational design, and structure is simple, and cost is relatively low, easy for installation, reliability preferably, be adapted to severe work
Make environment, solves the problems, such as the safety and leakproofness of radial flow impeller machinery sealing structure；
2, it seals between stator and canned rotor using " zero clearance, abrasion influence small " design structure, allows canned rotor
Sealing stator is worn in rotation, so that the leakage section formed in sealing be made to minimize, makes impeller sound part
Revealing gap becomes the flow channel of adaptive high-damping, low discharge coefficient, effectively reduces air loss, sealing performance is excellent
In common shaft end seal；
3, when unit starting and shutdown pass through critical speed, when operation troubles or long-play generate sealing wear,
Cheap sealing stator need to be simply only replaced, canned rotor is unaffected, and economy is high.Meanwhile with conventional seals structure phase
Than since sealing stator uses graphite material, relative axle based material hardness is lower, touches when eliminating shafting vibration with sealing structure
Grind the safety issue generated.
4, sealing structure is located at wheel backface, reduces the axial projective area of wheel backface stress, is sealed by design
Size makes wheel backface suitable with impeller leading faces stress, and the active balance axial thrust of impeller improves the safety of operation
Reliability is more favorable to the type selecting of bearing；
5, the seal boss structure at impeller back considerably increases the axial dimension of impeller hub, when improving impeller work
Intensity and safety, radial flow compressor tool can be made to operate normally under more severe high temperature and high pressure environment.
6, this impeller-sealing structure of the present invention has preferable processing integraty, handling ease, more exploitativeness.
Detailed description of the invention
Fig. 1 is a kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery of the present invention
Axial sectional view；
Fig. 2 is " zero clearance, abrasion influence small " design structure schematic diagram between canned rotor of the present invention and sealing stator；
Fig. 3 is stator blade of the present invention and Unitary Impeller-sealing structure schematic three dimensional views；
Description of symbols:
1, stator blade, 2, movable vane, 3, shell, 4, wheel back, 5, wheel cap, 6, steam output chamber room, 7, leakage gap, 8, canned rotor,
9, tooth, 10, sealing stator, 11, positioning pin are sealed.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, before the present embodiment is with technical solution of the present invention
It mentions, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 1 to Figure 3, a kind of high temperature high voltage resistant integral type suitable for radial flow impeller machinery provided by the invention
Impeller-sealing structure, including stator blade 1, movable vane 2, shell 3, wheel back 4, wheel cap 5, steam output chamber room 6, leakage gap 7, canned rotor
8, tooth 9, sealing stator 10 and positioning pin 11 are sealed.Wherein, several stator blades 1 are fixed on 3 inner wall of shell, and are evenly distributed on leaf
Wheel periphery, several movable vanes 2 are evenly arranged in 4 front of wheel back.Wheel cap 5 is fitted closely with stator blade 1, forms stator blade runner；Wheel cap 5 with
2 clearance fit of movable vane forms movable vane runner；5 front end extended segment of wheel cap constitutes cylindrical body steam output chamber room 6.Canned rotor 8 is arranged in
4 back sides of wheel back, sealing stator 10 are fixed on 3 inner wall of shell, and integral type leaf is collectively formed in canned rotor 8 and sealing stator 10
Wheel-sealing structure；Common shape between canned rotor 8 and sealing stator 10 and between wheel back 4 and sealing stator 10 and shell 3
At leakage gap 7.
Canned rotor 8 is using axial cone boss structure, the root diameter (RD) and wheel back 4 of 4 junctions of canned rotor 8 and wheel back
The ratio between outer diameter is 0.2~0.8, and the ratio between top diameter and root diameter (RD) of canned rotor 8 are 0.3~0.7, the axis of canned rotor 8
It is 0.3~0.7 to the ratio between length and wheel 4 outer diameters of back.8 surface layout of canned rotor have sealing tooth 9, sealing tooth 9 include stage teeth,
Tilted plat tooth, side tooth and indulge the multiple structural forms such as tree-like, the arrangement number of sealing tooth 9 is 4~15, seal the transverse tooth thickness of tooth 9 with
The ratio between tooth height is between 0.1~2.It seals stator 10 and uses replaceable structure, be fixed on shell 3 by positioning pin 11, positioned
11 quantity of pin is 2~8, and sealing stator 10 uses stepped construction, and step number is corresponding with the sealing number of tooth 9, adjacent rank
The difference in height of ladder is high 0.1~0.5 of sealing 9 tooth of tooth, is made of high temperature resistant graphite material, to guarantee that sealing stator 10 exists
Intensity and abrasive resistance when work.Wheel back 4 and 3 clearance fit of shell, use " zero between canned rotor 8 and sealing stator 10
Gap, abrasion influence small " design structure, the sealing tooth 9 on canned rotor 8 is matched with the boss for sealing stator 10, in leaf
When wheel mechanical high speed rotation, the sealing tooth 9 on canned rotor 8 is allowed to wear in rotation to the boss of sealing stator 10,
To generate adaptive gap, many annular orifices being arranged successively and ring are formed between canned rotor 8 and sealing stator 10
Shape gas chamber, so that the leakage section between canned rotor 8 and sealing stator 10 minimizes, the leakage between wheel back 4 and shell 3 is cut
Face collectively constitutes 7 flow channel of leakage gap of an adaptive high-damping between impeller sound part, low discharge coefficient, close
Sealing property is more reliable compared to common shaft end seal.
By taking radial-inward-flow turbine as an example, the principle of the present invention and process are main are as follows:
When operation, high temperature and pressure working medium is tentatively expanded by stator blade runner, is reduced a part of pressure and temperature, is converted into
Flow at high speed working medium with certain air-flow angle.Stator blade 1 exports most of working medium and enters movable vane runner along sprue, dynamic
It is sufficiently expanded in leaf runner, drives movable vane 2, wheel back 4 and the rotation acting of canned rotor 8, the low temperature for reaching setting is exported in movable vane 2
And low pressure, working medium is then discharged by steam output chamber room 6.Stator blade 1 exports fraction working medium and flows into leakage gap 7, which reveals work
Matter will directly affect the generating efficiency and operational reliability of turbine, theoretically for air loss is reduced, can minimize sealing
The radial clearance of 9 tooth tip of tooth.In order to reduce the working medium flow in leakage gap 7, the sealing tooth 9 and sealing on canned rotor 8 are quiet
The boss of son 10 matches, and constitutes the impeller-seal-integrated type design structure of " zero clearance, abrasion influence small ", allows to seal tooth 9
The boss of sealing stator 10 is worn in rotation, many is formed between canned rotor 8 and sealing stator 10 and successively arranges
The annular orifice and ring-shaped air chamber that the leakage section of column minimizes.Working medium is by between first sealing tooth 9 and sealing stator 10
Gap when, flow area strongly reduces, and flow velocity increases, and the pressure energy of working medium is converted to kinetic energy, forms jet stream.Subsequent jet stream into
Enter in the chamber between adjacent two sealings tooth 9 and form whirlpool, so that the kinetic energy of working medium is partially converted into thermal energy, reduce the stream of working medium
Dynamic speed.Behind first 9 tooth tip gap of sealing tooth, pressure reduces working medium in this way, this process can approximation regard as and throttled
The specific enthalpy of journey, working medium remains unchanged.Working medium by respectively sealing the thermal procession in 9 tooth tip gap of tooth and by the first sealing tooth below
The same when 9 tooth tip gap, only enthalpy drop is increasing, seals the speed at 9 tooth tip of tooth and also correspondingly increases.The present invention is " between zero
Gap, abrasion influence small " impeller-seal-integrated type structure make the leakage gap 7 of impeller sound part as adaptive height
It damps, the flow channel of low discharge coefficient, effectively reduces air loss, sealing performance is better than common shaft end seal.
When unit starting and shutdown pass through critical speed, the Oscillation Amplitude of rotor is increased, when Oscillation Amplitude is more than sealing
Gap width, common shaft end seal will touch mill with sealing tooth.Touching mill will make to seal tooth points wear, deformation or even lose
Sealing function, touch mill moment sealing tooth and shaft contacts at will generate amount of heat, make rotor surface hot-spot, it is possible to
Cause the major accident of shaft bending.And in the present invention when unit starting and shutdown pass through critical speed, operation troubles or length
When time operation generates sealing wear, since sealing stator 10 is made of graphite material, relative axle based material hardness is lower, disappears
The safety issue of mill generation is touched when in addition to shafting vibration with sealing structure.Meanwhile only need to simply to replace cheap sealing quiet
Son 10, canned rotor 8 is unaffected, and reliability and economy are substantially improved.In addition to this, the canned rotor 8 at 4 back sides of wheel back is bored
Shape boss structure plays the role of reinforcing rib, improves intensity and safety when impeller work, can make radial flow impeller
Machinery operates normally under more severe high temperature and high pressure environment.At the same time, this impeller-seal-integrated type structure of the present invention
The axially loaded projected area that wheel back 4 can be changed by designing the size of canned rotor 8, so that wheel 4 back side stress of back and wheel
4 front of back is suitable with total stress of movable vane 2, reaches the special-effect of balance impeller axial thrust, the safety for improving operation can
By property, it is more favorable to the type selecting of bearing.The processing technology of this impeller-seal-integrated type structure of the present invention is simple, is not necessarily to volume
Outer preparation axle end sealing device can be turned sealing in processing by the way of the blank form of forging or model casting
Son 8, wheel back 4 and movable vane 2 manufacture together.Compared with traditional sealing structure of shaft end, it is somebody's turn to do the leaf of " zero clearance, abrasion influence small "
Wheel-seal-integrated type structure has weight for the efficiency, security reliability and economy that further promote radial flow impeller machinery
Want meaning.
Claims (7)
1. a kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery, which is characterized in that including
Stator blade (1), movable vane (2), shell (3), wheel back (4), wheel cap (5), canned rotor (8) and sealing stator (10)；Wherein,
Several stator blades (1) are fixed on shell (3) inner wall, and are evenly distributed on impeller periphery, and several movable vanes (2) are evenly arranged in
Wheel back (4) front；Wheel cap (5) is fitted closely with stator blade (1), forms stator blade runner；Wheel cap (5) and movable vane (2) clearance fit, shape
At movable vane runner；Wheel cap (5) front end extended segment constitutes steam output chamber room (6)；Canned rotor (8) is arranged in wheel back (4) back side, sealing
Stator (10) is fixed on shell (3) inner wall, and one is collectively formed in canned rotor (8) and sealing stator (10) blind-mate
Formula impeller-sealing structure；Between canned rotor (8) and sealing stator (10) and wheel carries on the back (4) and sealing stator (10) and shell
Leakage gap (7) is collectively formed between body (3).
2. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 1
Structure, which is characterized in that canned rotor (8) carries on the back (4) junction using axial cone boss structure, canned rotor (8) and wheel
The ratio between root diameter (RD) and wheel back (4) outer diameter are 0.2~0.8, and the ratio between top diameter and root diameter (RD) of canned rotor (8) are 0.3
~0.7, the ratio between axial length and wheel back (4) outer diameter of canned rotor (8) are 0.3~0.7.
3. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 1
Structure, which is characterized in that canned rotor (8) surface layout has sealing tooth (9), and the arrangement number of sealing tooth (9) is 4~15,
The ratio between transverse tooth thickness and the tooth height of tooth (9) is sealed between 0.1~2.
4. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 3
Structure, which is characterized in that sealing tooth (9) includes stage teeth, tilted plat tooth, side tooth and vertical tree structure.
5. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 3
Structure, which is characterized in that sealing stator (10) uses replaceable structure, is fixed on shell (3) by positioning pin (11), seals
Stator (10) uses stepped construction, and step number is corresponding with the sealing number of tooth (9), and the difference in height of adjacent steps is sealing tooth
(9) tooth it is high 0.1~0.5.
6. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 5
Structure, which is characterized in that sealing stator (10) is made of high temperature resistant graphite material.
7. a kind of high temperature high voltage resistant Unitary Impeller-sealing suitable for radial flow impeller machinery according to claim 5
Structure, which is characterized in that positioning pin (11) quantity is 2~8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482517.1A CN110206592B (en) | 2019-06-04 | 2019-06-04 | High-temperature and high-pressure resistant integrated impeller-sealing structure for radial-flow impeller machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482517.1A CN110206592B (en) | 2019-06-04 | 2019-06-04 | High-temperature and high-pressure resistant integrated impeller-sealing structure for radial-flow impeller machinery |
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| Publication Number | Publication Date |
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| CN110206592A true CN110206592A (en) | 2019-09-06 |
| CN110206592B CN110206592B (en) | 2020-08-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441827A (en) * | 2020-03-19 | 2020-07-24 | 中国科学院工程热物理研究所 | Closed centripetal turbine wheel cover-casing cavity structure for inhibiting leakage loss |
| CN113944517A (en) * | 2021-11-10 | 2022-01-18 | 北京动力机械研究所 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
| CN114033502A (en) * | 2021-11-10 | 2022-02-11 | 北京动力机械研究所 | Low-leakage high-reliability radial flow turbocharging system rotor sealing structure |
| CN114060104A (en) * | 2021-11-10 | 2022-02-18 | 北京动力机械研究所 | Stepped high-reliability long-life sealing structure for rotor of turbocharging system |
| CN114856885A (en) * | 2022-06-20 | 2022-08-05 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227344A (en) * | 2001-11-28 | 2003-08-15 | Hitachi Ltd | Turbocharger |
| CN108625917A (en) * | 2018-06-28 | 2018-10-09 | 西安交通大学 | A kind of supercritical carbon dioxide Brayton cycle power part coolant seal insulation system |
| CN208870649U (en) * | 2018-09-13 | 2019-05-17 | 中储国能(北京)技术有限公司 | Leakage stream loses sealing structure between a kind of control radial impeller-back cavity |
-
2019
- 2019-06-04 CN CN201910482517.1A patent/CN110206592B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227344A (en) * | 2001-11-28 | 2003-08-15 | Hitachi Ltd | Turbocharger |
| CN108625917A (en) * | 2018-06-28 | 2018-10-09 | 西安交通大学 | A kind of supercritical carbon dioxide Brayton cycle power part coolant seal insulation system |
| CN208870649U (en) * | 2018-09-13 | 2019-05-17 | 中储国能(北京)技术有限公司 | Leakage stream loses sealing structure between a kind of control radial impeller-back cavity |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441827A (en) * | 2020-03-19 | 2020-07-24 | 中国科学院工程热物理研究所 | Closed centripetal turbine wheel cover-casing cavity structure for inhibiting leakage loss |
| CN113944517A (en) * | 2021-11-10 | 2022-01-18 | 北京动力机械研究所 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
| CN114033502A (en) * | 2021-11-10 | 2022-02-11 | 北京动力机械研究所 | Low-leakage high-reliability radial flow turbocharging system rotor sealing structure |
| CN114060104A (en) * | 2021-11-10 | 2022-02-18 | 北京动力机械研究所 | Stepped high-reliability long-life sealing structure for rotor of turbocharging system |
| CN114033502B (en) * | 2021-11-10 | 2023-09-12 | 北京动力机械研究所 | Low-leakage high-reliability rotor sealing structure of radial-flow turbocharging system |
| CN114060104B (en) * | 2021-11-10 | 2023-12-19 | 北京动力机械研究所 | Stepped high-reliability long-service-life sealing structure for rotor of turbocharging system |
| CN113944517B (en) * | 2021-11-10 | 2023-12-19 | 北京动力机械研究所 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
| CN114856885A (en) * | 2022-06-20 | 2022-08-05 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
| CN114856885B (en) * | 2022-06-20 | 2024-03-29 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
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|---|---|
| CN110206592B (en) | 2020-08-18 |
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