CN113944517A - Rotor sealing structure of local supercharged radial-flow turbocharging system - Google Patents
Rotor sealing structure of local supercharged radial-flow turbocharging system Download PDFInfo
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- CN113944517A CN113944517A CN202111327176.4A CN202111327176A CN113944517A CN 113944517 A CN113944517 A CN 113944517A CN 202111327176 A CN202111327176 A CN 202111327176A CN 113944517 A CN113944517 A CN 113944517A
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- base
- static valve
- pressing cover
- sealing
- supercharged
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- 238000007789 sealing Methods 0.000 title claims abstract description 102
- 230000003068 static effect Effects 0.000 claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 45
- 238000010248 power generation Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/28—Arrangement of seals
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- 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
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
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- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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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
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
The invention relates to a rotor sealing structure of a local supercharged radial-flow turbocharging system. According to the structural parameters of the turbocharging power generation system, firstly, the size parameters of a supercharging sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw are determined, secondly, the processing of a sealing structure component is completed, on the basis, the static valve and the base are assembled, and the static valve and the base are assembled and fixed by the fixing screw; then, the pressing cover is assembled with the base and the static valve, the pressing cover is installed on the base and is fastened by a locking screw, and a complete sealing structure is formed. The sealing structure has good sealing effect, can realize effective sealing of the shaft end of the high-speed rotor, and has good manufacturability.
Description
Technical Field
The invention belongs to the field of structural design of a radial flow turbocharging power generation system, and particularly relates to a rotor sealing structure of a local supercharged radial flow turbocharging system.
Background
The radial-flow turbocharging power generation system can realize the conversion of heat energy to mechanical energy through thermodynamic cycle processes such as heat absorption, expansion work, heat release, compression and the like under a closed condition by means of a gas working medium, and further convert the mechanical energy into electric energy by utilizing a motor. The typical radial-flow turbocharging power generation system mainly comprises a turbine, a compressor, a motor and the like in structure.
The rotor is one of the most central components in the turbo-charging power generation system, and plays a decisive role in stable operation, thermoelectric conversion efficiency, reliability and service life of the system. In the running process of the radial flow turbocharging power generation system, the rotor is in a high-speed rotating state, the rotating speed of the rotor can reach tens of thousands of revolutions per minute, the rotating speed of some rotors even reaches hundreds of thousands of revolutions per minute, and once the rotor structure breaks down, the turbocharging power generation system can not normally work, and the system structure can be damaged. Therefore, the reasonable design of the structure of the rotor is very important for ensuring the structural reliability of the turbine power generation system.
The rotor sealing structure aims at ensuring the orderly flow of the gas working medium, preventing the gas working medium from leaking along the gap part of the rotor and the static part, and playing a key role in the reliable operation of the rotor. For a radial turbine power generation system rotor, the sealing part mainly focuses on the rotor sealing of a compressor end and a turbine end, particularly the rotor sealing structure of the turbine end, and the sealing difficulty is large due to the large pressure difference and high temperature of the sealing working medium of the turbine end. At present, the sealing of rotor structures such as a turbocharging power generation system is mainly realized by arranging a sealing ring groove on a rotor, arranging one or more sealing rings in the ring groove, and enabling the sealing rings to be respectively contacted with the end surface of the ring groove and the end surface of a static supporting part when the rotor works so as to realize reliable sealing between the rotor and the static part. The sealing mode has the advantages of simple structure, small leakage amount, low manufacturing cost and the like, but has the problem of short service life and the like, and particularly when the sealing ring is used for sealing a high-temperature end, the sealing ring easily loses elasticity after long-time working to cause sealing failure, so that the sealing ring is a main factor for limiting the service life of a system.
The sealing structure of the rotor of the partial supercharged type runoff turbocharging system is provided aiming at the requirements of reliability and service life of the runoff turbocharging power generation system, the sealing structure of the rotor is reasonably designed, reliable sealing between the rotor and a static part can be realized, long-time working requirements can be met, and the aims of high reliability and long service life of the turbocharging power generation system structure are fulfilled.
Disclosure of Invention
The invention provides a sealing structure of a rotor of a partially supercharged radial flow turbocharging system, aiming at the sealing requirement of the rotor of the radial flow turbocharging power generation system. The sealing structure comprises a pressurizing sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw. According to the structural size parameters of the turbocharging power generation system, firstly, the size parameters of a pressurizing sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw are determined, secondly, the processing of a sealing structure assembly is completed, and on the basis, the static valve and the base are assembled and fixed by the fixing screw; then, the pressing cover is assembled with the base and the static valve, the pressing cover is installed on the base and is fastened by a locking screw, and a complete sealing structure is formed.
The technical scheme of the invention is as follows:
a rotor sealing structure of a local supercharged radial flow turbocharging system comprises a supercharging sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw.
The center of the pressurizing sealing shaft sleeve is provided with an axial through hole for mounting the pressurizing sealing shaft sleeve on the rotor, the outer side of the pressurizing sealing shaft sleeve is axially provided with ring teeth and a ring groove, and the ring teeth at the outer sides of the pressurizing sealing shaft sleeve along the axial direction are provided with a first pressurizing hole and a second pressurizing hole;
the axial center part of the static valve is provided with an annular groove and an annular tooth which are respectively matched with the annular tooth and the annular groove of the pressurizing sealing shaft sleeve, the outer side of the static valve is provided with a fixed brim for installing the static valve on the base, through holes with counter bores for installing fastening screws are uniformly distributed on the fixed brim, the outer cylindrical surface of the static valve is matched with the through holes of the base, the outer cylindrical surface of the static valve is matched with the through holes of the compressing cover, and the number of the static valves can be 2 or more than 2;
the base is provided with a through hole and a counter bore for installing the static valve, the base is provided with a threaded hole for fixing the static valve, and the base is provided with a threaded hole for fixing the pressing cover;
the pressing cover is provided with a through hole and a counter bore which are assembled with the static valve, the pressing cover is provided with a through hole with a counter bore which is used for fixing the pressing cover on the base and used for installing a fastening screw, and the pressing cover is provided with a boss which is assembled with the counter bore of the base;
the fixing screws are arranged in the through holes of the counter bores of the static valve and the threaded holes on the base, so that the static valve is fixed;
and the locking screws are arranged in the through holes of the counter bores of the pressing cover tape and the threaded holes on the base, so that the sealing structure is locked and fixed.
The assembly process of the rotor sealing structure of the local supercharged radial-flow turbocharging system comprises the following steps:
a. determining the size parameters of a rotor sealing structure of a local supercharged radial flow turbocharging system: according to the structural parameters of the radial-flow turbocharging power generation system, determining the size parameters of the supercharging sealing shaft sleeve, the static valve, the base, the pressing cover, the fixing screw and the locking screw;
b. processing of a rotor sealing assembly of a local supercharged radial-flow turbocharging system: processing a pressurizing sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw according to the size parameters of the rotor sealing structure of the local pressurizing type radial flow turbocharging system determined in the step a;
c. assembling the stationary flap with the base: mounting the stationary valve on a base, and assembling and fixing by using a fixing screw;
d. assembling the pressing cover with the base and the static valve: and c, on the basis of finishing the step c, installing the pressing cover on the base, and fastening by using a locking screw to form a complete sealing structure.
The invention has the beneficial effects that:
according to the rotor sealing structure of the local supercharged radial flow turbocharging system, the supercharging sealing shaft sleeve and the static valve adopt the sealing structure that a plurality of ring teeth are matched with the ring grooves, so that working medium leakage can be effectively reduced, and the sealing reliability is improved; the outer ring teeth on two sides of the pressurizing sealing shaft sleeve along the axial direction are provided with pressurizing holes, so that the pressurizing sealing shaft sleeve can play a local pressurizing effect along with the rotor in the high-speed rotation process, a local high-pressure area is formed on the end surfaces of two sides of the shaft sleeve by working media, the effect of blocking the flow of the working media is achieved, and the sealing reliability is further improved; 2 or more than 2 static petals are adopted in the sealing structure, so that the sealing structure is convenient to mount and dismount, and the structure has good manufacturability; by adopting the structural form of the base and the pressing cover, the sealing structure is convenient to assemble, the rigidity of the whole sealing structure can be improved, the sealing structure can bear certain impact load, and the service life and the reliability of a system are improved. The split type sealing structure has good sealing effect and good manufacturability, and can effectively meet the sealing requirement of the rotor of the radial flow turbocharging power generation system.
Drawings
FIG. 1 is a schematic view of a partially supercharged radial flow turbocharging system rotor seal structure.
Fig. 2 is a schematic structural view of a pressurized sealing sleeve.
Fig. 3 is a schematic view of a stationary flap configuration.
Fig. 4 is a schematic view of the base structure.
Fig. 5 is a schematic view of the hold-down cover structure.
Axial through hole of 1 pressurizing sealing shaft sleeve 2 static valve 3 base 4 pressing cover 5 pressurizing sealing shaft sleeve
Ring tooth of 6 pressurizing sealing shaft sleeve, ring groove of 7 pressurizing sealing shaft sleeve, pressurizing hole of 8 pressurizing hole of 9 pressurizing hole
13 static valve with through hole of counter bore 14 outer cylindrical surface of static valve
15 static valve outer cylindrical surface 16 base through hole 17 base counter bore
Threaded hole of 18 base fixing static valve 19 threaded hole of base fixing pressing cover
20 through-hole of press cap 21 press cap counter bore 22 press cap cover tape counter bore through-hole
23 pressing cover boss
Detailed Description
A rotor sealing structure of a local supercharged radial flow turbocharging system comprises a supercharging sealing shaft sleeve 1, a static valve 2, a base 3, a pressing cover 4, a fixing screw and a locking screw.
The center of the pressurizing sealing shaft sleeve 1 is provided with an axial through hole 5 for mounting the pressurizing sealing shaft sleeve on a rotor, the outer side of the pressurizing sealing shaft sleeve 1 is provided with ring teeth 6 and a ring groove 7 along the axial direction, and the outer ring teeth at two sides of the pressurizing sealing shaft sleeve 1 along the axial direction are provided with pressurizing holes 8 and 9;
the axial center part of the static valve 2 is provided with an annular groove 11 and an annular groove 10 which are respectively matched with the annular tooth 6 and the annular groove 7 of the pressurizing sealing shaft sleeve 1, the outer side of the static valve 2 is provided with a fixed eave 12 for installing the static valve on the base 3, through holes 13 with counter bores for installing fastening screws are evenly distributed on the fixed eave 12, the outer cylindrical surface 14 of the static valve 2 is matched with a through hole 16 of the base 3, the outer cylindrical surface 15 of the static valve 2 is matched with a through hole 20 of the pressing cover 4, and the number of the static valves 2 can be 2 or more than 2;
a through hole 16 and a counter bore 17 for installing the static valve 2 are arranged on the base 3, a threaded hole 18 for fixing the static valve 2 is arranged on the base 3, and a threaded hole 19 for fixing the pressing cover 4 is arranged on the base 3;
the pressing cover 4 is provided with a through hole 20 and a counter bore 21 which are assembled with the static valve 2, the pressing cover 4 is provided with a through hole 22 with a counter bore which is used for fixing the pressing cover on the base 3 and used for installing a fastening screw, and the pressing cover 4 is provided with a boss 23 which is assembled with the counter bore 17 of the base 3;
the fixing screws are arranged in the through holes 13 with counter bores of the static valve 2 and the threaded holes 18 on the base 3, so that the static valve 2 is fixed;
the locking screws are arranged in the through holes 22 with counter bores of the pressing cover 4 and the threaded holes 19 on the base 3, so that the sealing structure is locked and fixed.
The assembly process of the rotor sealing structure of the local supercharged radial-flow turbocharging system comprises the following steps:
a. determining the size parameters of a rotor sealing structure of a local supercharged radial flow turbocharging system: according to the structural parameters of the radial-flow turbocharging power generation system, determining the size parameters of the supercharging sealing shaft sleeve 1, the static valve 2, the base 3, the pressing cover 4, the fixing screw and the locking screw;
b. processing of a rotor sealing assembly of a local supercharged radial-flow turbocharging system: according to the size parameters of the rotor sealing structure of the local supercharged radial flow turbocharging system determined in the step a, machining a supercharged sealing shaft sleeve 1, a static valve 2, a base 3, a pressing cover 4, a fixing screw and a locking screw;
c. assembly of the stationary flap 2 with the base 3: the static valve 2 is arranged on the base 3 and is assembled and fixed by a fixing screw;
d. assembly of the hold-down cover 4 with the base 3 and the stationary flap 2: and c, on the basis of finishing the step c, installing the pressing cover 4 on the base 3, and fastening by using a locking screw to form a complete sealing structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a partial pressure boost formula runoff turbocharging system rotor seal structure which characterized in that: comprises a pressurizing sealing shaft sleeve (1), a static valve (2), a base (3) and a pressing cover (4);
the center of the pressurizing sealing shaft sleeve (1) is provided with an axial through hole (5) for mounting the pressurizing sealing shaft sleeve on a rotor, the outer side of the pressurizing sealing shaft sleeve (1) is axially provided with ring teeth (6) and ring grooves (7), and the outer ring teeth on two sides of the pressurizing sealing shaft sleeve (1) along the axial direction are provided with a first pressurizing hole (8) and a second pressurizing hole (9);
an annular groove (11) and an annular tooth (10) which are matched with the annular tooth (6) and the annular groove (7) of the pressurizing sealing shaft sleeve (1) respectively are arranged at the axial center of the static valve (2), a fixing brim (12) for mounting the static valve (2) on the base (3) is arranged at the outer side of the static valve, through holes (13) with counter bores for mounting fastening screws are uniformly distributed on the fixing brim (12), a first outer cylindrical surface (14) of the static valve (2) is matched with a through hole (16) of the base (3), and a second outer cylindrical surface (15) of the static valve (2) is matched with a through hole (20) of the pressing cover (4);
a through hole (16) for installing the static valve (2) and a counter bore (17) are formed in the base (3), a threaded hole (18) for fixing the static valve (2) is formed in the base (3), and a threaded hole (19) for fixing the pressing cover (4) is formed in the base (3);
the pressing cover (4) is provided with a through hole (20) and a counter bore (21) which are assembled with the static valve (2), the pressing cover (4) is provided with a through hole (22) which is used for fixing the pressing cover on the base (3) and is provided with a counter bore for installing a fastening screw, and the pressing cover (4) is provided with a boss (23) which is assembled with the counter bore (17) of the base (3).
2. The partially supercharged radial flow turbocharging system rotor seal structure of claim 1, characterized in that: the sealing structure further comprises a fixing screw and a locking screw, wherein the fixing screw is arranged in a through hole (13) with a counter bore of the static valve (2) and a threaded hole (18) on the base (3) to fix the static valve (2);
the locking screw is arranged in a through hole (22) with a counter bore of the pressing cover (4) and a threaded hole (19) on the base (3), so that the sealing structure is locked and fixed.
3. The partially supercharged radial flow turbocharging system rotor seal structure of claim 2, characterized in that: the number of the static valves (2) is 2.
4. The partially supercharged radial flow turbocharging system rotor seal structure of claim 2, characterized in that: the number of the static valves (2) is more than 2.
5. An assembly process of a partially supercharged radial flow turbocharging system rotor sealing structure according to any one of claims 2 to 4, characterized by comprising the following steps:
a. determining the size parameters of a rotor sealing structure of a local supercharged radial flow turbocharging system: according to the structural parameters of the radial-flow turbocharging power generation system, determining the size parameters of a supercharging sealing shaft sleeve (1), a static valve (2), a base (3), a pressing cover (4), a fixing screw and a locking screw;
b. processing of a rotor sealing assembly of a local supercharged radial-flow turbocharging system: according to the size parameters of the rotor sealing structure of the local supercharged radial flow turbocharging system determined in the step a, machining a supercharged sealing shaft sleeve (1), a static valve (2), a base (3), a pressing cover (4), a fixing screw and a locking screw;
c. assembling the stationary flap (2) with the base (3): the static valve (2) is arranged on the base (3) and is assembled and fixed by a fixing screw;
d. the assembly of the pressing cover (4) with the base (3) and the stationary flap (2): and c, on the basis of finishing the step c, installing the pressing cover (4) on the base (3) and fastening by using a locking screw to form a complete sealing structure.
6. A method of using a partially supercharged radial flow turbocharging system rotor seal structure according to any one of claims 1 to 4.
7. A radial flow turbocharged power generation system comprising a partially supercharged radial flow turbocharged system rotor seal structure of any one of claims 1 to 4.
8. A method of operating a radial flow turbocharged power generation system as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327176.4A CN113944517B (en) | 2021-11-10 | 2021-11-10 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327176.4A CN113944517B (en) | 2021-11-10 | 2021-11-10 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113944517A true CN113944517A (en) | 2022-01-18 |
| CN113944517B CN113944517B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111327176.4A Active CN113944517B (en) | 2021-11-10 | 2021-11-10 | Rotor sealing structure of local supercharged radial-flow turbocharging system |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH438842A (en) * | 1965-04-05 | 1967-06-30 | Prvni Brnenska Strojirna | Turbocharger with radial turbine |
| JP2003254006A (en) * | 2002-02-27 | 2003-09-10 | Toshiba Corp | Seal device and steam turbine |
| JP2004245187A (en) * | 2003-02-17 | 2004-09-02 | Toshiba Corp | Non-contact seal device for turbo machine and steam turbine equipment using this device |
| US20120027582A1 (en) * | 2010-08-02 | 2012-02-02 | General Electric Company | Floating packing ring assembly |
| CN105673854A (en) * | 2016-01-18 | 2016-06-15 | 沈阳航空航天大学 | Sealing device providing self-concentric balance force with intermediate air entrainment |
| CN106217076A (en) * | 2016-08-17 | 2016-12-14 | 中国北方发动机研究所(天津) | A kind of radial-flow type rotating shaft of supercharger turbine fixture and closure gasket groove processing method |
| US9732622B1 (en) * | 2015-06-16 | 2017-08-15 | Florida Turbine Technologies, Inc. | Self-balancing air riding seal for a turbine |
| CN109723825A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of dry gas sealing device of combining form |
| CN110206592A (en) * | 2019-06-04 | 2019-09-06 | 西安交通大学 | A kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery |
| CN110307041A (en) * | 2019-06-24 | 2019-10-08 | 中信重工机械股份有限公司 | A kind of steam turbine external gland based on centrifugal compressed principle |
| CN112065511A (en) * | 2020-08-31 | 2020-12-11 | 南京航空航天大学 | Injection type honeycomb bush-labyrinth sealing structure |
| CN112431639A (en) * | 2020-11-27 | 2021-03-02 | 北京化工大学 | Can restrain rim seal structure of inhomogeneous multiscale gas invasion |
| CN113202928A (en) * | 2021-03-29 | 2021-08-03 | 东南大学 | Low-leakage wing-containing sealing structure |
-
2021
- 2021-11-10 CN CN202111327176.4A patent/CN113944517B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH438842A (en) * | 1965-04-05 | 1967-06-30 | Prvni Brnenska Strojirna | Turbocharger with radial turbine |
| JP2003254006A (en) * | 2002-02-27 | 2003-09-10 | Toshiba Corp | Seal device and steam turbine |
| JP2004245187A (en) * | 2003-02-17 | 2004-09-02 | Toshiba Corp | Non-contact seal device for turbo machine and steam turbine equipment using this device |
| US20120027582A1 (en) * | 2010-08-02 | 2012-02-02 | General Electric Company | Floating packing ring assembly |
| US9732622B1 (en) * | 2015-06-16 | 2017-08-15 | Florida Turbine Technologies, Inc. | Self-balancing air riding seal for a turbine |
| CN105673854A (en) * | 2016-01-18 | 2016-06-15 | 沈阳航空航天大学 | Sealing device providing self-concentric balance force with intermediate air entrainment |
| CN106217076A (en) * | 2016-08-17 | 2016-12-14 | 中国北方发动机研究所(天津) | A kind of radial-flow type rotating shaft of supercharger turbine fixture and closure gasket groove processing method |
| CN109723825A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of dry gas sealing device of combining form |
| CN110206592A (en) * | 2019-06-04 | 2019-09-06 | 西安交通大学 | A kind of high temperature high voltage resistant Unitary Impeller-sealing structure suitable for radial flow impeller machinery |
| CN110307041A (en) * | 2019-06-24 | 2019-10-08 | 中信重工机械股份有限公司 | A kind of steam turbine external gland based on centrifugal compressed principle |
| CN112065511A (en) * | 2020-08-31 | 2020-12-11 | 南京航空航天大学 | Injection type honeycomb bush-labyrinth sealing structure |
| CN112431639A (en) * | 2020-11-27 | 2021-03-02 | 北京化工大学 | Can restrain rim seal structure of inhomogeneous multiscale gas invasion |
| CN113202928A (en) * | 2021-03-29 | 2021-08-03 | 东南大学 | Low-leakage wing-containing sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113944517B (en) | 2023-12-19 |
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