CN220539690U - Steam seal for high-speed centripetal turbine - Google Patents
Steam seal for high-speed centripetal turbine Download PDFInfo
- Publication number
- CN220539690U CN220539690U CN202321656796.7U CN202321656796U CN220539690U CN 220539690 U CN220539690 U CN 220539690U CN 202321656796 U CN202321656796 U CN 202321656796U CN 220539690 U CN220539690 U CN 220539690U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- impeller
- oil seal
- chamber
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000346 nonvolatile oil Substances 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 5
- 239000012634 fragment Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a steam seal for a high-speed centripetal turbine, which comprises a casing, a main shaft and an impeller, wherein the impeller is arranged at one end of the main shaft, the other end of the main shaft extends out of the casing to form an output shaft, one end of the casing is provided with an impeller chamber, the impeller is positioned in the impeller chamber, the other end of the casing is contracted to form a main shaft chamber, a fixed oil seal is arranged at the joint of the main shaft chamber and the impeller chamber, a movable oil seal is sleeved on the main shaft between the fixed oil seal and the impeller, and the end part of the rear end of the impeller is provided with an abutting spring sheet which abuts against the movable oil seal. After the scheme is adopted, the joint of the main shaft chamber and the impeller chamber is always sealed, so that steam leakage is prevented.
Description
Technical Field
The utility model relates to the technical field of generator sets, in particular to a steam seal for a high-speed centripetal turbine.
Background
The high-speed centripetal turbine generator set is mainly used for generating power by waste heat, the waste heat generates steam, the steam drives the centripetal turbine, the centripetal turbine drives the generator through the gear box to finish generating power, and when the generator is operated, the pressure on the back of a wheel disc of the high-speed centripetal turbine is very high, so that a sealing ring is easy to damage, and steam leaks.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a steam seal for a high-speed centripetal turbine, which is used for preventing steam leakage.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the utility model provides a high-speed radial inflow gland seal for turbine, it includes casing, main shaft, impeller, and wherein, the impeller is installed in main shaft one end, and the main shaft other end stretches out the casing and forms the output shaft, and one of them one end of casing is equipped with the impeller room, and the impeller is located the impeller room, and the casing other end shrink forms the main shaft room, and the junction of main shaft room and impeller room is equipped with fixed oil blanket, and the cover is equipped with movable oil blanket on the main shaft between fixed oil blanket and the impeller, and impeller rear end tip is equipped with the conflict shell fragment, and the conflict shell fragment is contradicted with movable oil blanket.
The fixed oil seal is annular and sleeved on the main shaft, one end part of the fixed oil seal extends to form a fastening ring, the fastening ring is positioned in the output direction of the main shaft, the inner cavity of the other end of the fixed oil seal is gradually contracted to form a conical pressurizing chamber with large outside and small inside, one end of the movable oil seal is expanded to form a pushing ring, the pushing ring is abutted against the abutting elastic piece, the other end of the movable oil seal is gradually contracted to form an inserting end, and the inserting end is embedded in the conical pressurizing chamber.
The abutting elastic sheet is formed by an annular elastic sheet or a spring, one end of the abutting elastic sheet abuts against the end part of the rear end of the impeller, and the other end of the abutting elastic sheet abuts against the movable oil seal.
The fastening ring is sleeved with the main shaft, a steel ring groove is formed in the outer ring surface of the fastening ring, and a fastening steel ring is embedded in the steel ring groove.
The main shaft in the shell is sleeved with a bearing, and the outer ring of the bearing is embedded with the inner cavity wall of the shell.
According to the utility model, after the scheme is adopted, the fixed oil seal seals the joint of the main shaft chamber and the impeller chamber, the tightness of the fastening ring in the main shaft chamber can be effectively increased, the outer end of the fastening ring is prevented from forming a flaring, the conical pressurizing chamber is additionally arranged at the other end of the fixed oil seal, meanwhile, the movable oil seal is adopted for matching, when the fixed oil seal and the movable oil seal are worn, the movable oil seal is pushed towards the fixed oil seal under the action of the tension of the abutting elastic sheet, so that the inserting end of the movable oil seal slides towards the conical pressurizing chamber, the self-adaptive locking is realized, the joint of the main shaft chamber and the impeller chamber is always sealed, and the steam leakage is prevented.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Description of the embodiments
The utility model is further described below with reference to all drawings, in which preferred embodiments of the utility model are: referring to fig. 1, the steam seal for a high-speed radial inflow turbine in this embodiment includes a casing 1, a main shaft 2, and an impeller 3, wherein the impeller 3 is mounted at one end of the main shaft 2, the other end of the main shaft 2 extends out of the casing to form an output shaft, a bearing 4 is sleeved on the main shaft 2 in the casing 1, and an outer ring of the bearing 4 is embedded with an inner cavity wall of the casing 1. One end of the casing 1 is provided with an impeller chamber 5, the impeller 3 is positioned in the impeller chamber 5, the other end of the casing 1 is contracted to form a main shaft chamber, a fixed oil seal 6 is arranged at the joint of the main shaft chamber and the impeller chamber 5, a movable oil seal 7 is sleeved on the main shaft 2 between the fixed oil seal 6 and the impeller 3, an abutting spring piece 8 is arranged at the end part of the rear end of the impeller 3, and the abutting spring piece 8 abuts against the movable oil seal 7. The abutting spring piece 8 is formed by an annular spring piece or a spring, one end of the abutting spring piece 8 abuts against the end part of the rear end of the impeller 3, and the other end abuts against the movable oil seal 7.
The fixed oil seal 6 is annular and sleeved on the main shaft 2, one end of the fixed oil seal 6 extends to form a fastening ring 10, the fastening ring 10 is positioned in the output direction of the main shaft 2, the inner cavity of the other end of the fixed oil seal 6 gradually contracts to form a conical pressurizing chamber 9 with a large outside and a small inside, one end of the movable oil seal 7 extends to form a pushing ring, the pushing ring is abutted against the abutting elastic sheet 8, the other end of the movable oil seal 7 gradually contracts to form an inserting end, and the inserting end is embedded in the conical pressurizing chamber 9. The fastening ring 10 is sleeved with the main shaft 2, a steel ring groove is arranged on the outer ring surface of the fastening ring 10, and a fastening steel ring is embedded in the steel ring groove.
According to the embodiment, after the scheme is adopted, the fixed oil seal seals the joint of the main shaft chamber and the impeller chamber, the tightness can be effectively increased by the fastening ring in the main shaft chamber, the outer end of the fastening ring is prevented from being flared by the fastening steel ring, the conical pressurizing chamber is additionally arranged at the other end of the fixed oil seal, meanwhile, the movable oil seal is adopted for matching, when the fixed oil seal and the movable oil seal are worn, the movable oil seal is pushed to the direction of the fixed oil seal under the action of the tension of the abutting elastic piece, the inserting end of the movable oil seal slides to the conical pressurizing chamber, self-adaptive locking is realized, the joint of the main shaft chamber and the impeller chamber is always sealed, and steam leakage is prevented.
The above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, so that all changes made in the shape and principles of the present utility model are covered by the scope of the present utility model.
Claims (5)
1. The utility model provides a high-speed steam seal for centripetal turbine, it includes casing (1), main shaft (2), impeller (3), and wherein, impeller (3) are installed in main shaft (2) one end, and main shaft (2) other end stretches out the casing and forms output shaft, its characterized in that: one end of the casing (1) is provided with an impeller chamber (5), the impeller (3) is positioned in the impeller chamber (5), the other end of the casing (1) is contracted to form a main shaft chamber, a fixed oil seal (6) is arranged at the joint of the main shaft chamber and the impeller chamber (5), a movable oil seal (7) is sleeved on the main shaft (2) between the fixed oil seal (6) and the impeller (3), an abutting elastic sheet (8) is arranged at the rear end part of the impeller (3), and the abutting elastic sheet (8) abuts against the movable oil seal (7).
2. A high-speed radial inflow turbine gland seal as claimed in claim 1, wherein: the fixed oil seal (6) is annular and sleeved on the main shaft (2), one end of the fixed oil seal (6) extends to form a fastening ring (10), the fastening ring (10) is located in the output direction of the main shaft (2), the inner cavity of the other end of the fixed oil seal (6) gradually contracts to form a conical pressurizing chamber (9) with the outer size and the inner size, one end of the movable oil seal (7) extends to form a pushing ring, the pushing ring is abutted to the abutting elastic sheet (8), the other end of the movable oil seal (7) gradually contracts to form an inserting end, and the inserting end is embedded in the conical pressurizing chamber (9).
3. A high-speed radial inflow turbine gland seal as claimed in claim 1, wherein: the abutting spring piece (8) is formed by an annular spring piece or a spring, one end of the abutting spring piece (8) abuts against the end part of the rear end of the impeller (3), and the other end abuts against the movable oil seal (7).
4. A high-speed radial inflow turbine gland seal as claimed in claim 1, wherein: the fastening ring (10) is sleeved with the main shaft (2), a steel ring groove is arranged on the outer ring surface of the fastening ring (10), and a fastening steel ring is embedded in the steel ring groove.
5. A high-speed radial inflow turbine gland seal as claimed in claim 1, wherein: the main shaft (2) in the casing (1) is sleeved with a bearing (4), and the outer ring of the bearing (4) is embedded with the inner cavity wall of the casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321656796.7U CN220539690U (en) | 2023-06-28 | 2023-06-28 | Steam seal for high-speed centripetal turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321656796.7U CN220539690U (en) | 2023-06-28 | 2023-06-28 | Steam seal for high-speed centripetal turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539690U true CN220539690U (en) | 2024-02-27 |
Family
ID=89972042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321656796.7U Active CN220539690U (en) | 2023-06-28 | 2023-06-28 | Steam seal for high-speed centripetal turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539690U (en) |
-
2023
- 2023-06-28 CN CN202321656796.7U patent/CN220539690U/en active Active
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| GR01 | Patent grant |