GB1451901A - Sealing devices for gas turbine engines - Google Patents
Sealing devices for gas turbine enginesInfo
- Publication number
- GB1451901A GB1451901A GB3037773A GB3037773A GB1451901A GB 1451901 A GB1451901 A GB 1451901A GB 3037773 A GB3037773 A GB 3037773A GB 3037773 A GB3037773 A GB 3037773A GB 1451901 A GB1451901 A GB 1451901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flange
- clearance
- lever
- stator casing
- received
- 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.)
- Expired
Links
Classifications
-
- 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
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
- F01D11/16—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means
- F01D11/18—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
1451901 Turbines-rotor blade tip sealing ROLLS-ROYCE (1971) Ltd 20 Sept 1974 [26 June 1973] 30377/73 Heading FIT The invention relates to a gas turbine engine and to an arrangement for sealing rotor blade tips in which blade tip seal members mounted on the stator casing may be moved radially inwardly or outwardly so as to adjust the tip clearance in response to temperature of the gas leakage through the clearance. The engine shown comprises rotor blades 24 having blade tips 45 which rotate in close proximity to segmental shroud members 25 each of which is formed with a radial flange 26 received between a pair of flanges 27, 28 formed integrally with the stator casing member 23. A further flange 31 is formed integrally with the stator casing member and a lever 29 is pivotally mounted within an opening 32 formed in the flange 31, one end 30 of the lever passing through an opening in the flange 28 to be received within an opening in the flange 26 of the shroud segment. The other end 33 of the lever is received within a flange member 35 to which is secured a temperature responsive ring member 42. The flange member 35 is mounted for radial sliding movement between flanges 37, 38 of the stator casing members 23, 39. Thus in the event of the blade tip clearance increasing, increased flow of turbine working fluid will pass through the clearance, the ring member 42 is heated and expands. The lever 29 thereby pivots about the point 32 in an anti-clockwise direction and so the shroud member 25 is caused to move inwardly whereby the clearance is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3037773A GB1451901A (en) | 1973-06-26 | 1973-06-26 | Sealing devices for gas turbine engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3037773A GB1451901A (en) | 1973-06-26 | 1973-06-26 | Sealing devices for gas turbine engines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1451901A true GB1451901A (en) | 1976-10-06 |
Family
ID=10306730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3037773A Expired GB1451901A (en) | 1973-06-26 | 1973-06-26 | Sealing devices for gas turbine engines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1451901A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2240818A (en) * | 1990-02-12 | 1991-08-14 | Gen Electric | Blade tip clearance control apparatus in a gas turbine engine |
GB2260371A (en) * | 1991-10-09 | 1993-04-14 | Rolls Royce Plc | Shroud and liner construction surrounding rotor blade tips in turbines. |
-
1973
- 1973-06-26 GB GB3037773A patent/GB1451901A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2240818A (en) * | 1990-02-12 | 1991-08-14 | Gen Electric | Blade tip clearance control apparatus in a gas turbine engine |
GB2260371A (en) * | 1991-10-09 | 1993-04-14 | Rolls Royce Plc | Shroud and liner construction surrounding rotor blade tips in turbines. |
US5295787A (en) * | 1991-10-09 | 1994-03-22 | Rolls-Royce Plc | Turbine engines |
GB2260371B (en) * | 1991-10-09 | 1994-11-09 | Rolls Royce Plc | Turbine engines |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |