GB2571486A - Full-path sealing structure of steam turbine generator and assembly method - Google Patents
Full-path sealing structure of steam turbine generator and assembly method Download PDFInfo
- Publication number
- GB2571486A GB2571486A GB1908411.0A GB201908411A GB2571486A GB 2571486 A GB2571486 A GB 2571486A GB 201908411 A GB201908411 A GB 201908411A GB 2571486 A GB2571486 A GB 2571486A
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- United Kingdom
- Prior art keywords
- sealing
- oil passage
- steam turbine
- turbine generator
- transition ring
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A full-path sealing structure of a steam turbine generator and an assembly method. The full-path sealing structure of a steam turbine generator comprises a transition ring (1), a sealing plate (5), an end cover (8), a sealing base (11), a rotating shaft (12), and a sealing base cover (13). Sealing structures are formed respectively between the sealing base (11) and the rotating shaft (12) and between the sealing base cover (13) and the rotating shaft (12). A sealing structure is formed between the sealing base (11) and the sealing base cover (13). Sealing structures are formed respectively between the transition ring (1) and the end cover (8) and between the transition ring (1) and the sealing base (11) by means of the sealing plate (5). The structure can make an oil sealing structure of a steam turbine generator form a full-path closed sealing structure in a horizontal joint surface, and can effectively prevent hydrogen from leaking from an inner hydrogen side (a high pressure area) of the steam turbine generator to flow to an outer side (a low pressure area) of the steam turbine generator, and thus, the sealing reliability of the steam turbine generator in the horizontal joint surface is greatly improved, and the steam turbine generator has a simple and compact structure, and is easy to assemble.
Description
(57) A full-path sealing structure of a steam turbine generator and an assembly method. The full-path sealing structure of a steam turbine generator comprises a transition ring (I) , a sealing plate (5), an end cover (8), a sealing base (II) , a rotating shaft (12), and a sealing base cover (13). Sealing structures are formed respectively between the sealing base (11) and the rotating shaft (12) and between the sealing base cover (13) and the rotating shaft (12). A sealing structure is formed between the sealing base (11) and the sealing base cover (13). Sealing structures are formed respectively between the transition ring (1) and the end cover (8) and between the transition ring (1) and the sealing base (11) by means of the sealing plate (5). The structure can make an oil sealing structure of a steam turbine generator form a full-path closed sealing structure in a horizontal joint surface, and can effectively prevent hydrogen from leaking from an inner hydrogen side (a high pressure area) of the steam turbine generator to flow to an outer side (a low pressure area) of the steam turbine generator, and thus, the sealing reliability of the steam turbine generator in the horizontal joint surface is greatly improved, and the steam turbine generator has a simple and compact structure, and is easy to assemble.
AA INNER HYDROGEN SIDE (HIGH PRESSURE AREA)
BB OUTER SIDE (LOW PRESSURE AREA) OF A STEAM TURBINE GENERATOR
This international application has entered the national phase early.
1/1
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OUTER SIDE (LOW PRESSURE AREA) OF A STEAM TURBINE GENERATOR
FIG 1
Full-path Sealing Structure of Steam Turbine Generator and Assembly Method
1. Field of the Invention [0001] The invention relates to the field of sealing of steam turbine generators, in particular to a full-path sealing structure of a steam turbine generator and an assembly method thereof.
2. Description of the Related Art [0002] A current steam turbine generator is provided with one of the oil sealing structures with single oil flow, double oil flow or triple oil flow. Such sealing structures have a main defect, that is, the sealing path is not fully closed when the steam turbine generator is running, in particular on its horizontal joint surface area, such that the inner hydrogen side (high pressure area) of the steam turbine generator is not effectively isolated from the outer side of the steam turbine generator (low pressure area), and part of hydrogen flows from the inner hydrogen side (high pressure area) into the outer side (low pressure area), causing leakage of gas and oil when the steam turbine generator runs, and in particular on its horizontal joint surface, oil leakage is frequent. The amount of supplemented hydrogen will largely increase in case of leakage of gas and oil. Hydrogen is the lightest gas with strong permeability and diffusivity. As hydrogen leakage continues to increase, the output of the steam turbine generator will be affected and even explosion happens, thus causing terrible accidents.
Summary of the Invention [0003] The technical problem to be solved by the invention is to provide a full-path sealing structure of a steam turbine generator and an assembly method for the problems of the prior art to improve the sealing reliability of the horizontal joint surface when a steam turbine generator runs.
[0004] The technical problem to be solved by the invention is realized by the following technical solution: a full-path sealing structure of a steam turbine generator comprises a transition ring, a sealing plate, an end cover, a sealing base, a rotating shaft and a sealing base cover; sealing structures are formed respectively between the sealing base and the rotating shaft and between the sealing base cover and the rotating shaft;
a sealing structure is formed between the sealing base and the sealing base cover;
and sealing structures are formed respectively between the transition ring and the end cover and between the transition ring and the sealing base by means of the sealing plate.
[0005] Preferably, the full-path sealing structure of a steam turbine generator further comprises a first sealing strip; the sealing base is provided with a mounting recess and the first sealing strip is embedded in the mounting recess; and a sealing structure is formed between the first sealing strip and the sealing plate.
[0006] Preferably, a main oil passage is provided between the transition ring and the sealing base that are in communication with each other; the transition ring is provided with a first branch oil passage in communication with the main oil passage; a sealing structure is formed between the first sealing strip and the first branch oil passage; and the main oil passage and the first branch oil passage are filled with a sealing oil.
[0007] Preferably, the transition ring is provided with a first buffer recess; and the first buffer recess is in communication with the main oil passage and the first branch oil passage respectively.
[0008] Preferably, the full-path sealing structure of a steam turbine generator further comprises a second sealing strip; the end cover is provided with a mounting recess and the second sealing strip is embedded in the mounting recess; and a sealing structure is formed between the second sealing strip and the sealing plate.
[0009] Preferably, a main oil passage is provided between the transition ring and the sealing base that are in communication with each other; the transition ring is provided with a second branch oil passage in communication with the main oil passage; a sealing structure is formed between the second sealing strip and the second branch oil passage; and the main oil passage and the second branch oil passage are filled with a sealing oil.
[0010] Preferably, the transition ring is provided with a second buffer recess; and the second buffer recess is in communication with the main oil passage and the second branch oil passage respectively.
[0011] An assembly method of a full-path sealing structure of a steam turbine generator, characterized in that the full-path sealing structure of a steam turbine generator comprises a transition ring, an end cover, a sealing base, a rotating shaft, and a sealing base cover, and the assembly method comprises the following steps: [0012] step 1, mounting the sealing base and forming a sealing structure between the sealing base and the rotating shaft;
[0013] step 2, mounting the sealing base cover and forming sealing structures between the sealing base cover and the sealing base and between the sealing base cover and the rotating shaft respectively;
[0014] step 3, connecting the transition ring and the sealing plate together in a fixed manner, connecting the transition ring with the end cover and the transition ring with the sealing base respectively in a fixed manner, and forming sealing structures between the sealing plate and the end cover and between the sealing plate and the sealing base respectively.
[0015] Preferably, before assembly of the transition ring and the sealing base, a second horizontal joint surface seat grinding area is machined on the transition ring and a first horizontal joint surface seat grinding area is machined on the sealing base; after the transition ring and the sealing base are assembled in place, the total actual contact area of the first horizontal joint surface seat grinding area and the second horizontal joint surface seat grinding area accounts for over 90% of the total area of the first horizontal joint surface seat grinding area and the second horizontal joint surface seat grinding area.
[0016] Preferably, before assembly of the transition ring, the end cover and the sealing base, the end cover is provided with a mounting recess and a second sealing strip is embedded in the mounting recess; the sealing base is provided with a mounting recess and a first sealing strip is embedded in the mounting recess; a main oil passage is provided on the matching part between the transition ring and the sealing base that are in communication with each other; the first horizontal joint surface seat grinding area and the second horizontal joint surface seat grinding area cover the main oil passage; the transition ring is provided with a first branch oil passage and a second branch oil passage that are in communication with the main oil passage respectively; the second horizontal joint surface seat grinding area covers the first branch oil passage and the second branch oil passage; after the transition ring, the end cover and the sealing base are assembled in place, sealing structures are formed respectively between the first sealing strip and the first branch oil passage and between the first sealing strip and the sealing plate; sealing structures are formed respectively between the second sealing strip and the second branch oil passage and between the second sealing strip and the sealing plate; and the main oil passage, the first branch oil passage and the second branch oil passage are filled with the sealing oil.
[0017] Compared with the prior art, the invention has the following beneficial effects: a full-path sealing structure of a steam turbine generator is formed on a horizontal joint surface by means of the sealing structures formed respectively between the sealing base and the rotating shaft and between the sealing base cover and the rotating shaft, the sealing structure formed between the sealing base and the sealing base cover, and the sealing structures formed respectively between the transition ring and the end cover and between the transition ring and the sealing base by means of the sealing plate. The full-path sealing structure provides adequate assurance of the isolation between hydrogen on the inner side of a steam turbine generator and air on the outer side of the steam turbine generator, effectively prevents hydrogen and sealing oil from leaking from the inner hydrogen side (high pressure area) to the outer side (low pressure area) of the steam turbine generator, and significantly improves the sealing reliability on the horizontal joint surface when the steam turbine generator runs.
Description of the Drawings [0018] Figure 1 is a sectional view of a full-path sealing structure of a steam turbine generator of the invention.
[0019] Marks in the figure: 1 - transition ring, 2 - first branch oil passage, 3 - second buffer recess, 4 - second branch oil passage, 5 - sealing plate, 6 - second sealing strip, 7 - first sealing strip, 8 - end cover, 9 - first horizontal joint surface seat grinding area, 10 - main oil passage, 11 - sealing base, 12 - rotating shaft, 13 - sealing base cover, 14 - main buffer recess, 15- second horizontal joint surface seat grinding area, 16 - first buffer recess, 17 - sealing pad.
Description of the Preferred Embodiments [0020] The invention will be described in further detail in combination with drawings and embodiments for clear understanding of the object, technical solution and advantages of the invention. It should be understood that various embodiments described herein are only used to explain the invention rather than limiting the invention.
[0021] As shown in Figure 1, the full-path sealing structure of a steam turbine generator comprises a transition ring 1, a sealing plate 5, an end cover 8, a sealing base 11, a rotating shaft 12, a sealing base cover 13 and a sealing pad 17. The sealing plate 5 is preferably a rubber plate; sealing structures are formed respectively between the sealing base 11 and the rotating shaft 12, between the sealing base cover 13 and the rotating shaft 12 and between the sealing pad 17 and the rotating shaft 12; a sealing structure is formed between the sealing base 11 and the sealing base cover 13 by means of the sealing pad 17; sealing structures are formed respectively between the transition ring 1 and the end cover 8 and between the transition ring 1 and the sealing base 11 by means of the sealing plate 5; and the transition ring 1 is connected respectively with the end cover 8 and the sealing base 11 and fixed by means of bolts, and the bolts run through the sealing plate 5. The inner side of the sealing base 11 is the inner hydrogen side, and the outer side of the transition ring 1 is the outer side of the steam turbine generator. The inner hydrogen side is the high pressure area of the steam turbine generator with high pressure hydrogen, while the outer side of the steam turbine generator is the air side, belonging to the low pressure area of the steam turbine generator.
[0022] Furthermore, to improve the sealing reliability between the transition ring 1 and the end cover 8, the end cover 8 can be provided with a mounting recess, and a second sealing strip 6 is embedded in the mounting recess on the end cover 8; and a sealing structure is formed between the second sealing strip 6 and the sealing plate 5. The cross section of the second sealing strip 6 is preferably flared, so that the second sealing strip 6 is securely embedded in the mounting recess on the end cover 8. Similarly, to improve the sealing reliability between the transition ring 1 and the sealing base 11, the sealing base 11 can be provided with a mounting recess, and a first sealing strip 7 is embedded in the mounting recess on the sealing base 11; and a sealing structure is formed between the first sealing strip 7 and the sealing plate 5. The cross section of the first sealing strip 7 is preferably flared, so that the first sealing strip 7 is securely embedded in the mounting recess on the sealing base 11. The first sealing strip 7 and the second sealing strip 6 are preferably ring-shaped rubber strips. [0023] When a steam turbine generator runs, the high pressure hydrogen on the inner hydrogen side has strong permeability and diffusivity. As shown in Figure 1, to effectively prevent the high pressure hydrogen from leaking from the inner hydrogen side to the outer side (low pressure area) of the steam turbine generator, a main oil passage 10 can be further provided between the transition ring 1 and the sealing base 11 that are in communication with each other; the transition ring 1 is provided with a first branch oil passage 2 and a second branch oil passage 4 that are in communication with the main oil passage 10 respectively; the sealing plate 5 is provided with a corresponding through port to form a sealing structure between the first sealing strip 7 and the first branch oil passage 2, and to form a sealing structure between the second sealing strip 6 and the second branch oil passage 4; and the main oil passage 10, the first branch oil passage 2 and the second branch oil passage 4 are filled with a sealing oil.
[0024] Furthermore, the transition ring 1 can be provided with a first buffer recess 16 and a second buffer recess 3; the first buffer recess 16 is in communication with the main oil passage 10 and the first branch oil passage 2; and the second buffer recess 3 is in communication with the main oil passage 10 and the second branch oil passage 4. Preferably, the first buffer recess 16 is a strip recess with circular arc transition parts at both ends. Preferably, the second buffer recess 3 is a circular recess. Moreover, as shown in Figure 1, the sealing base 11 can be provided with a main buffer recess 14; the main buffer recess 14 is in communication with the main oil passage 10; and a sealing structure is formed between the first sealing strip 7 and the main buffer recess 14. With such structural design, a loop-shaped oil recess sealing structure is formed between the transition ring 1 and the sealing base 11. Specifically, the full-path sealing structure of a steam turbine generator can be assembled by the following steps: [0025] firstly, mounting the sealing base 11 and forming a sealing structure between the sealing base 11 and the rotating shaft 12;
[0026] secondly, mounting the sealing base cover 13 and forming sealing structures between the sealing base cover 13 and the sealing base 11 and between the sealing base cover 13 and the rotating shaft 12 respectively;
[0027] next, fixing and connecting the transition ring 1 and the sealing plate 5 together, generally directly bonding the sealing plate 5 to the transition ring 1 directly; and [0028] finally, connecting the transition ring 1 with the end cover 8 and the sealing base 11 in a fixed manner by means of attachment bolts respectively and forming sealing structures between the sealing plate 5 and the end cover 8 and between the sealing plate 5 and the sealing base 11 respectively.
[0029] The full-path sealing structure of a steam turbine generator of the invention has fewer components and the assembly between related components is easy, so that the full-path sealing structure of a steam turbine generator is in relatively simple and compact in the overall structure and easy to assemble. After all related components are assembled in place, the sealing reliability on a horizontal joint surface of the steam turbine generator can be greatly improved. To further improve the sealing property of the full-path sealing structure of a steam turbine generator, preferably, before assembly of the transition ring 1, the end cover 8 and the sealing base 11, the end cover 8 is provided with a mounting recess and a second sealing strip 6 is embedded in the mounting recess; the sealing base 11 is provided with a mounting recess and a first sealing strip 7 is embedded in the mounting recess; a main oil passage 10 is provided on the matching part between the transition ring 1 and the sealing base 11 that are in communication with each other; the transition ring 1 is provided with a first branch oil passage 2 and a second branch oil passage 4 that are in communication with the main oil passage 10 respectively; furthermore, a second horizontal joint surface seat grinding area 15 is machined on the transition ring 1 and a first horizontal joint surface seat grinding area 9 is machined on the sealing base 11. The seat grinding herein means a metal working process in terms of plane roughness processing for the metal matching surface in order to increase the actual contact area when metal matching surfaces match with each other. The first horizontal joint surface seat grinding area 9 and the second horizontal joint surface seat grinding area 15 cover the main oil passage 10; the second horizontal joint surface seat grinding area 15 covers the first branch oil passage 2 and the second branch oil passage 4; and the contact surface of the first horizontal joint surface seat grinding area 9 and the second horizontal joint surface seat grinding area 15 can also be provided with a sealant. After the transition ring 1, the end cover 8 and the sealing base 11 are assembled in place, sealing structures are formed respectively between the first sealing strip 7 and the first branch oil passage 2 and between the first sealing strip 7 and the sealing plate 5; sealing structures are formed respectively between the second sealing strip 6 and the second branch oil passage 4 and between the second sealing strip 6 and the sealing plate 5; and preferably, the total actual contact area of the first horizontal joint surface seat grinding area 9 and the second horizontal joint surface seat grinding area 15 accounts for over 90% of the total area of the first horizontal joint surface seat grinding area 9 and the second horizontal joint surface seat grinding area 15. By raising requirements in terms of the seat grinding contact area and addition of the sealant for the horizontal joint surface of the steam turbine generator, the full-path sealing structure of a steam turbine generator can better isolate hydrogen on the inner hydrogen side of the steam turbine generator from air on the outer side of the steam turbine generator, and avoid oil leakage on the horizontal joint surface ofthe steam turbine generator.
[0030] The above mentioned embodiments are only preferred embodiments of the invention and not used to limit the invention. It should be noted that any modification, equivalent replacement and improvement made within the scope of the spirit and rule of the invention shall be incorporated into the protection scope of the invention.
Claims (10)
1. A full-path sealing structure of a steam turbine generator, comprising a transition ring (1), an end cover (8), a sealing base (11), a rotating shaft (12), and a sealing base cover (13); sealing structures being formed respectively between the sealing base (11) and the rotating shaft (12) and between the sealing base cover (13) and the rotating shaft (12); a sealing structure being formed between the sealing base (11) and the sealing base cover (13), characterized in that the full-path sealing structure of a steam turbine generator further comprises a sealing plate (5); and sealing structures are formed respectively between the transition ring (1) and the end cover (8) and between the transition ring (1) and the sealing base (11) by means of the sealing plate (5).
2. The full-path sealing structure of a steam turbine generator of claim 1, characterized in that the full-path sealing structure of a steam turbine generator further comprises a first sealing strip (7); the sealing base (11) is provided with a mounting recess and the first sealing strip (7) is embedded in the mounting recess; and a sealing structure is formed between the first sealing strip (7) and the sealing plate (5).
3. The full-path sealing structure of a steam turbine generator of claim 2, characterized in that a main oil passage (10) is provided between the transition ring (1) and the sealing base (11) that are in communication with each other; the transition ring (1) is provided with a first branch oil passage (2) in communication with the main oil passage (10); a sealing structure is formed between the first sealing strip (7) and the first branch oil passage (2); and the main oil passage (10) and the first branch oil passage (2) are filled with a sealing oil.
4. The full-path sealing structure of a steam turbine generator of claim 3, characterized in that the transition ring (1) is provided with a first buffer recess (16); and the first buffer recess (16) is in communication with the main oil passage (10) and the first branch oil passage (2) respectively.
5. The full-path sealing structure of a steam turbine generator of claim 1, characterized in that the full-path sealing structure of a steam turbine generator further comprises a second sealing strip (6); the end cover (8) is provided with a mounting recess and the second sealing strip (6) is embedded in the mounting recess on the end cover (8); and a sealing structure is formed between the second sealing strip (6) and the sealing plate (5).
6. The full-path sealing structure of a steam turbine generator of claim 5, characterized in that a main oil passage (10) is provided between the transition ring (1) and the sealing base (11) that are in communication with each other; the transition ring (1) is provided with a second branch oil passage (4) in communication with the main oil passage (10); a sealing structure is formed between the second sealing strip (6) and the second branch oil passage (4); and the main oil passage (10) and the second branch oil passage (4) are filled with a sealing oil.
7. The full-path sealing structure of a steam turbine generator of claim 6, characterized in that the transition ring (1) is provided with a second buffer recess (3); and the second buffer recess (3) is in communication with the main oil passage (10) and the second branch oil passage (4) respectively.
8. An assembly method of a full-path sealing structure of a steam turbine generator, characterized in that the full-path sealing structure of a steam turbine generator comprises a transition ring (1), an end cover (8), a sealing base (11), a rotating shaft (12), and a sealing base cover (13), and the assembly method comprises the following steps:
step 1, mounting the sealing base (11) and forming a sealing structure between the sealing base (11) and the rotating shaft (12);
step 2, mounting the sealing base cover (13) and forming sealing structures between the sealing base cover (13) and the sealing base (11) and between the sealing base cover (13) and the rotating shaft (12) respectively;
step 3, connecting the transition ring (1) and the sealing plate (5) together in a fixed manner, connecting the transition ring (1) with the end cover (8) and the transition ring (1) with the sealing base (11) respectively in a fixed manner, and forming sealing structures between the sealing plate (5) and the end cover (8) and between the sealing plate (5) and the sealing base (11) respectively.
9.
The assembly method of a full-path sealing structure of a steam turbine generator of claim 8, characterized in that before assembly of the transition ring (1) and the sealing base (11), a second horizontal joint surface seat grinding area (15) is machined on the transition ring (1) and a first horizontal joint surface seat grinding area (9) is machined on the sealing base (11); after the transition ring (1) and the sealing base (11) are assembled in place, the total actual contact area of the first horizontal joint surface seat grinding area (9) and the second horizontal joint surface seat grinding area (15) accounts for over 90% of the total area of the first horizontal joint surface seat grinding area (9) and the second horizontal joint surface seat grinding area (15).
10. The assembly method of a full-path sealing structure of a steam turbine generator of claim 9, characterized in that before assembly of the transition ring (1), the end cover (8) and the sealing base (11), the end cover (8) is provided with a mounting recess and a second sealing strip (6) is embedded in the mounting recess; the sealing base (11) is provided with a mounting recess and a first sealing strip (7) is embedded in the mounting recess; a main oil passage (10) is provided on the matching part between the transition ring (1) and the sealing base (11) that are in communication with each other; the first horizontal joint surface seat grinding area (9) and the second horizontal joint surface seat grinding area (15) cover the main oil passage (10); the transition ring (1) is provided with a first branch oil passage (2) and a second branch oil passage (4) that are in communication with the main oil passage (10) respectively; the second horizontal joint surface seat grinding area (15) covers the first branch oil passage (2) and the second branch oil passage (4); after the transition ring (1), the end cover (8) and the sealing base (11) are assembled in place, sealing structures are formed between the first sealing strip (7) and the first branch oil passage (2) and between the first sealing strip (7) and the sealing plate (5) respectively; sealing structures are formed respectively between the second sealing strip (6) and the second branch oil passage (4) and between the second sealing strip (6) and the sealing plate (5) respectively; and the main oil passage (10), the first branch oil passage (2) and the second branch oil passage (4) are filled with a sealing oil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054704 | 2016-12-14 | ||
| PCT/CN2017/114257 WO2018107981A1 (en) | 2016-12-14 | 2017-12-01 | Full-path sealing structure of steam turbine generator and assembly method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201908411D0 GB201908411D0 (en) | 2019-07-24 |
| GB2571486A true GB2571486A (en) | 2019-08-28 |
| GB2571486B GB2571486B (en) | 2022-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1908411.0A Active GB2571486B (en) | 2016-12-14 | 2017-12-01 | Full-path sealing structure of steam turbine generator and assembly method |
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| Country | Link |
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| GB (1) | GB2571486B (en) |
Citations (6)
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| US6082740A (en) * | 1998-03-10 | 2000-07-04 | General Electric Co. | Bolted-ring seal casing for hydrogen cooled generators |
| US20130229075A1 (en) * | 2012-03-01 | 2013-09-05 | General Electric Company | Motor having a seal assembly |
| CN203301288U (en) * | 2013-06-24 | 2013-11-20 | 大唐贵州野马寨发电有限公司 | Sealing device for hydrogen-cooled generator |
| CN104205580A (en) * | 2011-12-21 | 2014-12-10 | 教皇电机有限公司 | Earth and/or sealing assembly for electric motors |
| CN106787374A (en) * | 2016-12-14 | 2017-05-31 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure and assembly method |
| CN206293995U (en) * | 2016-12-14 | 2017-06-30 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure |
-
2017
- 2017-12-01 GB GB1908411.0A patent/GB2571486B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082740A (en) * | 1998-03-10 | 2000-07-04 | General Electric Co. | Bolted-ring seal casing for hydrogen cooled generators |
| CN104205580A (en) * | 2011-12-21 | 2014-12-10 | 教皇电机有限公司 | Earth and/or sealing assembly for electric motors |
| US20130229075A1 (en) * | 2012-03-01 | 2013-09-05 | General Electric Company | Motor having a seal assembly |
| CN203301288U (en) * | 2013-06-24 | 2013-11-20 | 大唐贵州野马寨发电有限公司 | Sealing device for hydrogen-cooled generator |
| CN106787374A (en) * | 2016-12-14 | 2017-05-31 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure and assembly method |
| CN206293995U (en) * | 2016-12-14 | 2017-06-30 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure |
Non-Patent Citations (1)
| Title |
|---|
| "Electric power research institute of Guangdong power grid corporation, China Electric Power press" - 31January 2011, Pages 150-151 and figures 2-150 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201908411D0 (en) | 2019-07-24 |
| GB2571486B (en) | 2022-03-23 |
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