CN113944517B - 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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- CN113944517B CN113944517B CN202111327176.4A CN202111327176A CN113944517B CN 113944517 B CN113944517 B CN 113944517B CN 202111327176 A CN202111327176 A CN 202111327176A CN 113944517 B CN113944517 B CN 113944517B
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- base
- static valve
- hole
- pressurizing
- radial
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- 238000007789 sealing Methods 0.000 title claims abstract description 98
- 230000003068 static effect Effects 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 32
- 238000010248 power generation Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 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
- 238000010586 diagram 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
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
-
- 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
-
- 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
Landscapes
- 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, which comprises a supercharging sealing shaft sleeve, a static flap, a base, a compression cover, a fixing screw and a locking screw. According to structural parameters of the turbocharging power generation system, firstly determining size parameters of a pressurizing sealing shaft sleeve, a static valve, a base, a compression cover, a fixing screw and a locking screw, then finishing processing of a sealing structure assembly, assembling the static valve and the base on the basis, and assembling and fixing by the fixing screw; then, the assembly of the pressing cover, the base and the static valve is carried out, the pressing cover is arranged on the base and fastened by the locking screw, and a complete sealing structure is formed. The sealing structure not only has good sealing effect, can realize effective sealing of the shaft end of the high-speed rotor, but also has good manufacturability.
Description
Technical Field
The invention belongs to the field of structural design of radial-flow turbocharging power generation systems, 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 conversion from heat energy to mechanical energy by means of the gas working medium through thermodynamic cycle processes such as heat absorption, expansion work, heat release, compression and the like under a closed condition, and further converts the mechanical energy into electric energy by utilizing a motor. Typical radial flow turbocharged power generation systems are structurally comprised primarily of components such as turbines, compressors, motors, and the like.
The rotor is one of the most central components in the turbocharging power generation system, and plays a decisive role in the stable operation of the system, the thermoelectric conversion efficiency, the reliability and the service life. In the running process of the radial-flow turbocharging power generation system, the rotor is in a high-speed rotation state, the rotating speed of the rotor can reach tens of thousands of revolutions per minute, and the rotating speed of some rotors even reaches hundreds of thousands of revolutions per minute, so that once a rotor structure fails, the turbocharging power generation system can not work normally, and the system structure can be damaged. Therefore, reasonable design of the rotor structure is critical to ensure 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 clearance part between the rotor and the static piece, and plays a key role in the reliable operation of the rotor. For the rotor of the radial turbine power generation system, the main concerned sealing part is the rotor seal of the compressor end and the turbine end, in particular to the rotor seal structure of the turbine end, and the sealing difficulty is also high due to the large pressure difference and high temperature of the sealing working medium of the turbine end. At present, sealing of rotor structures such as a turbocharging power generation system mainly comprises the steps that a sealing ring groove is formed in a rotor, a single sealing ring or a plurality of sealing rings are arranged in the ring groove, and when the rotor works, the sealing rings are respectively contacted with the end face of the ring groove and the end face of a static supporting part, so that reliable sealing between the rotor and the static part is realized. The sealing mode has the advantages of simple structure, small leakage amount, low manufacturing cost and the like, but also has the problems of short service life and the like, and particularly when the sealing mode is used for sealing a high-temperature end, the sealing ring is easy to lose elasticity when working for a long time, so that the sealing failure is caused, and the sealing mode is a main factor limiting the service life of a system.
Aiming at the reliability and service life requirements of the radial-flow turbocharging power generation system, the rotor sealing structure of the local supercharging radial-flow turbocharging system is provided, and through reasonably designing the sealing structure of the rotor, the reliable sealing between the rotor and the static part can be realized, the long-time working requirement can be met, and the high reliability and long service life targets of the structure of the turbocharging power generation system are realized.
Disclosure of Invention
The invention provides a rotor sealing structure of a local supercharged radial-flow turbocharging system, aiming at the sealing requirement of a 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 structural size parameters of the turbocharging power generation system, firstly determining size parameters of a pressurizing sealing shaft sleeve, a static valve, a base, a compression cover, a fixing screw and a locking screw, then finishing processing of a sealing structure assembly, and on the basis, assembling the static valve and the base and using the fixing screw for assembly and fixation; then, the assembly of the pressing cover, the base and the static valve is carried out, the pressing cover is arranged on the base and fastened by the 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 central part of the pressurizing sealing shaft sleeve is provided with an axial through hole for installing the pressurizing sealing shaft sleeve on a rotor, the outer side of the pressurizing sealing shaft sleeve is axially provided with ring teeth and ring grooves, and the outer side ring teeth on the two 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 of the stationary vane is provided with annular grooves and annular teeth which are respectively matched with the annular teeth and the annular grooves of the pressurizing sealing shaft sleeve, the outer side of the stationary vane is provided with fixed eaves for installing the stationary vane on the base, through holes with counter bores for installing fastening screws are uniformly distributed on the fixed eaves, the outer cylindrical surface of the stationary vane is matched with the through holes of the base, the outer cylindrical surface of the stationary vane is matched with the through holes of the pressing cover, and the number of the stationary vanes can be 2 or more;
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 compression 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, the through hole is fixed on the base and is used for installing a fastening screw, and the pressing cover is provided with a boss assembled with the counter bore of the base;
the fixing screw is arranged in the through hole of the counter bore of the static valve and the threaded hole on the base, so that the static valve is fixed;
the locking screw is arranged in the through hole with the counter bore of the pressing cover and the threaded hole on the base, so that the sealing structure is locked and fixed.
The assembling process of the rotor sealing structure of the local supercharged radial flow turbocharging system comprises the following steps of:
a. determining a dimensional parameter of a rotor sealing structure of the local supercharged radial flow turbocharging system: according to structural parameters of the radial-flow turbocharging power generation system, size parameters of a pressurizing sealing shaft sleeve, a static valve, a base, a compression cover, a fixing screw and a locking screw are determined;
b. machining of a rotor seal assembly of a local supercharged radial flow turbocharging system: d, processing a pressurizing sealing shaft sleeve, a static valve, a base, a compression cover, a fixing screw and a locking screw according to the size parameters of the rotor sealing structure of the local pressurizing radial flow turbocharging system determined in the step a;
c. assembling the stationary vane and the base: the static valve is arranged on the base and assembled and fixed by a fixing screw;
d. assembly of the compression cover with the base and the stationary petals: and c, on the basis of completing the step c, installing the compression cover on the base, and fastening by using a locking screw to form a complete sealing structure.
The beneficial effects of the invention are as follows:
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 the leakage of working media can be effectively reduced, and the sealing reliability is improved; the pressurizing sealing shaft sleeve is provided with pressurizing holes along the outer ring teeth on two sides of the axial direction, so that the pressurizing sealing shaft sleeve can have 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 function 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; the base and the compression cover are adopted, so that the assembly of the sealing structure is convenient, the rigidity of the whole sealing structure can be improved, the sealing structure can bear a certain impact load, and the service life and the reliability of the 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 diagram of a rotor seal configuration for a partially supercharged radial flow turbocharger system.
Fig. 2 is a schematic view of the pressurized sealing sleeve.
Fig. 3 is a schematic view of a stationary lobe configuration.
Fig. 4 is a schematic view of the base structure.
Fig. 5 is a schematic view of the structure of the pressing cover.
1 pressurizing sealing shaft sleeve 2 static valve 3 base 4 pressing cover 5 pressurizing sealing shaft sleeve axial through hole
Ring teeth 7 of 6-supercharging sealing shaft sleeve are used for supercharging ring grooves 8, supercharging holes 9 and supercharging holes of sealing shaft sleeve
10 stationary vane teeth 11 stationary vane ring groove 12 stationary vane fixed eave
13 static petals with countersunk through holes 14 external cylindrical surface of static petals
15 outer cylindrical surface 16 base through hole 17 base counter bore of static valve
Screw hole of 18 fixed stationary flap of base screw hole 19 fixed compression lid of base
Through hole of 20 compacting cover 21 compacting cover counter bore 22 compacting cover counter bore with counter bore
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 part of the pressurizing sealing shaft sleeve 1 is provided with an axial through hole 5 for installing the pressurizing sealing shaft sleeve 1 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 side ring teeth of the pressurizing sealing shaft sleeve 1 on two sides in the axial direction are provided with pressurizing holes 8 and 9;
the axial center of the stationary vane 2 is provided with a ring groove 11 and a ring tooth 10 which are respectively matched with the ring tooth 6 and the ring groove 7 of the pressurizing sealing shaft sleeve 1, the outer side of the stationary vane 2 is provided with a fixed eave 12 for installing the stationary vane 2 on the base 3, the fixed eave 12 is uniformly provided with through holes 13 with counter bores for installing fastening screws, the outer cylindrical surface 14 of the stationary vane 2 is matched with the through holes 16 of the base 3, the outer cylindrical surface 15 of the stationary vane 2 is matched with the through holes 20 of the pressing cover 4, and the number of the stationary vanes 2 can be 2 or more;
the base 3 is provided with a through hole 16 and a counter bore 17 for installing the static valve 2, the base 3 is provided with a threaded hole 18 for fixing the static valve 2, and the base 3 is provided with a threaded hole 19 for fixing the pressing cover 4;
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 4 on the base 3 and is used for installing a fastening screw, and the pressing cover 4 is provided with a boss 23 assembled with the counter bore 17 of the base 3;
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, so that the static valve 2 is fixed;
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 locking and fixing of the sealing structure are realized.
The assembling process of the rotor sealing structure of the local supercharged radial flow turbocharging system comprises the following steps of:
a. determining a dimensional parameter of a rotor sealing structure of the local supercharged radial flow turbocharging system: according to structural parameters of the radial-flow turbocharging power generation system, size parameters of the pressurizing sealing shaft sleeve 1, the static valve 2, the base 3, the compression cover 4, the fixing screw and the locking screw are determined;
b. machining of a rotor seal assembly of a local supercharged radial flow turbocharging system: d, processing the pressurizing sealing shaft sleeve 1, the static valve 2, the base 3, the pressing cover 4, the fixing screw and the locking screw according to the size parameters of the rotor sealing structure of the local pressurizing radial flow turbocharging system determined in the step a;
c. assembly of the stationary vane 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 compression cover 4 with the base 3 and the stationary flap 2: on the basis of completing the step c, the pressing cover 4 is installed on the base 3 and fastened by a locking screw to form a complete sealing structure.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A local booster-type radial-flow 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 central part of the pressurizing sealing shaft sleeve (1) is provided with an axial through hole (5) for installing the pressurizing sealing shaft sleeve on a rotor, the outer side of the pressurizing sealing shaft sleeve (1) is axially provided with annular teeth (6) and annular grooves (7), and the outer side annular teeth of the pressurizing sealing shaft sleeve (1) on the two sides in the axial direction are provided with a first pressurizing hole (8) and a second pressurizing hole (9);
the axial center of the static valve (2) is provided with a ring groove (11) and a ring tooth (10) which are respectively matched with the ring tooth (6) and the ring 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 uniformly distributed on the fixed eave (12), a first outer cylindrical surface (14) of the static valve (2) is matched with the through hole (16) of the base (3), and a second outer cylindrical surface (15) of the static valve (2) is matched with the through hole (20) of the pressing cover (4);
the base (3) is provided with a through hole (16) and a counter bore (17) for installing the static valve (2), the base (3) is provided with a threaded hole (18) for fixing the static valve (2), and the base (3) is provided with a threaded hole (19) for fixing the compression cover (4);
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, the through hole is fixed on the base (3) and is used for installing a fastening screw, and the pressing cover (4) is provided with a boss (23) assembled with the counter bore (17) of the base (3).
2. A rotor seal arrangement for a locally-pressurized radial-flow turbocharging system in accordance with claim 1, wherein: 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) to realize locking and fixing of the sealing structure.
3. A rotor seal arrangement for a locally-pressurized radial-flow turbocharging system in accordance with claim 2, wherein: the number of the static petals (2) is 2.
4. A rotor seal arrangement for a locally-pressurized radial-flow turbocharging system in accordance with claim 2, wherein: the number of the static petals (2) is more than 2.
5. A process for assembling a rotor seal structure of a locally-pressurized radial-flow turbocharging system according to any one of claims 2 to 4, characterized by comprising the steps of:
a. determining a dimensional parameter of a rotor sealing structure of the local supercharged radial flow turbocharging system: according to structural parameters of the radial-flow turbocharging power generation system, size parameters of a pressurizing sealing shaft sleeve (1), a static valve (2), a base (3), a compression cover (4), a fixing screw and a locking screw are determined;
b. machining of a rotor seal assembly of a local supercharged radial flow turbocharging system: d, processing a pressurizing sealing shaft sleeve (1), a static valve (2), a base (3), a pressing cover (4), a fixing screw and a locking screw according to the size parameters of the rotor sealing structure of the local pressurizing radial flow turbocharging system determined in the step a;
c. assembling the static valve (2) and the base (3): the static valve (2) is arranged on the base (3) and is assembled and fixed by a fixing screw;
d. assembling the pressing cover (4) with the base (3) and the static valve (2): and c, on the basis of completing the step c, installing the compression cover (4) on the base (3), and fastening by using a locking screw to form a complete sealing structure.
6. A radial flow turbocharged power generation system comprising a locally supercharged radial flow turbocharger system rotor seal according to any one of claims 1 to 4.
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 CN113944517A (en) | 2022-01-18 |
| CN113944517B true 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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| CN (1) | CN113944517B (en) |
Citations (12)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120027582A1 (en) * | 2010-08-02 | 2012-02-02 | General Electric Company | Floating packing ring assembly |
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2021
- 2021-11-10 CN CN202111327176.4A patent/CN113944517B/en active Active
Patent Citations (12)
| 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 |
| 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 |
|---|---|
| CN113944517A (en) | 2022-01-18 |
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