US3601414A - Ceramic crossarm seal for gas turbine regenerators - Google Patents
Ceramic crossarm seal for gas turbine regenerators Download PDFInfo
- Publication number
- US3601414A US3601414A US872328A US3601414DA US3601414A US 3601414 A US3601414 A US 3601414A US 872328 A US872328 A US 872328A US 3601414D A US3601414D A US 3601414DA US 3601414 A US3601414 A US 3601414A
- Authority
- US
- United States
- Prior art keywords
- shoe
- case member
- case
- ceramic
- opening
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/047—Sealing means
Definitions
- Crossarm seals for gas turbine engine regenerators are subjected to widelyvarying temperature gradients both laterally across the seal and longitudinally along the seal.
- Coated metal seals have been used as the crossarm and have performed satisfactorily as far as friction and wear are concerned, but the differences in expansion coefficients of the metal shoe and the ceramicregenerator produce forces and distortion that lead to gas leakage.
- This invention provides a seal for use in rubbing against a ceramic regenerator that can be made of the same ceramic material as the regenerator.
- the rubbing shoe of the seal thus has'thermal expansion characteristics closely approximating the thermal expansion characteristics of the corresponding regenerator.
- the seal is capable of absorbing minor manufacturing variations between the regenerator and the engine housing.
- the seal comprises a'thinwalled case :member having a base and longitudinal edges folded partially back over the base to define a longitudinal opening in one side of the case member.
- a structurally integral ceramic shoe is positioned in the opening of the case member.
- a resilient material is located in the case member between the base of the .case member and the inner surface of the ceramic shoe where the resilient material urges the ceramic shoe out of the case so the outersurface of the ceramic shoe bears against the moving ceramic regenerator.
- a typical case member has asubstantially rectangular. cross section with a longitudinal opening in one of the larger walls.
- the case can have a truncated triangular cross section.
- a groove is formed in the top of the bulkhead separating the'two gas flow passages of the engine housing and the case member canbe mounted in the groove on top of additional spring elements.
- FIG; I is a plan view of a gas turbine engine showing a crossarm seal made according to this invention.
- FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1 showing aseal made with a case having a rectangular cross
- FIG.3 is a cross-sectional view similar to FIG. 2 of a seal case having a truncated triangular cross section.
- 'F IG. 4 is a cross section of a seal having a case made with an inverted truncated triangular section. A folded spring is located between the case edges and a ceramic shoe is mounted in the base of the triangular case.
- Housing 10 contains two semicircular gas passages 12 and 14 separated substantially alonga diameter by a bulkhead 16.
- a shallow groove 18 having a substantially rectangular cross section is cut into the upper surface of bulkhead l6 as shown in FIG. 2.
- a seal assembly is made by forming a thin walled case member 20 into a rectangular shape having a width fitting into V groove '18.
- Case member 20 typically ismade of a metal such as stainless steeL
- the longitudinal edges 22 and 24 of case member 20 are folded partially back over its base 26 to define portion 34 projecting outward through opening 28.
- a resilient type spring 42 and a plurality of metal L-shaped clamps 44 fastened to the sides of bulkhead 16 project over the upper edges of case member 20 to hold the seal assembly in place in the groove.
- a ceramic regenerator 46 then is mounted for rotation above the seal assembly where the regenerator bears against the upper surface of shoe 30. Since thermal expansion coefficients of the regenerator and the shoe are substantially equal, thermally induced dimensional changes produce similar behavior of the regenerator and the shoe. Good contact between the shoe and the regenerator is maintained throughout a wider temperature'range to insure good sealing during all phases of engine operation. Any variations that might occur are absorbed readily by the resilient material 40 or byspring 42.
- case 20 is moved downward in groove 18 by the force exerted by the regenerator on the seal.
- Spring 42 absorbs the force and applies a sealing load that holds the upper surface of the shoe against the regenerator. The spring urges the case upward to absorb shoe wear and also seals the area between the groove and the case.
- case member 20' has the cross section of a truncated triangle with edges 22 and 24 projecting upward above base 26'.
- the wider portion 32' of the shoe 30 hasa trapezoidal cross sectionwith its angled sides corresponding to the angles of the edges 22 and 24.
- Narrow portion 34 of shoe 30 is substantially rectangular and has a width corresponding to the width of the opening defined by edges 22' and 24.
- a layer of resilient material 40 is positioned between the base of shoe 30 and the base of case member 20' and a leaf-type spring 42 is positioned between the base of the case member and the bottom of the groove.
- Clamps 44' are fastened to the sides of bulkhead l6 and have upper legs angled over the projecting edges of case 20 to hold the case in place on top of the bulkhead.
- the FIG. 3 construction reduces any tendency of the ceramic shoe to tip laterally under the forces exerted by the rotating regenerator. Broader surface contact thus is maintained between the surface of the shoe and the regenerator, which reduces regenerator wear.
- case member 20" is an inverted version of case member 20 that has a longitudinal slot 48 cut into base 26".
- the ends of the case member lack both the slot 48 and opening 28" and thus connect the two sides of the case member together.
- a flexible metal leaf 50 is positioned between downwardly facing edges 22" and 24" and lengths of wire 52 are positioned between the shoe and the ends of the leaf to hold the leaf in position while permitting leaf flexing.
- Shoe 30 has its wide portion 32" projecting upward out of the case and a narrow portion 34" located within the case. Clamps 44" fastened to the bulkhead retain the seal assembly in groove 18".
- Flexing of metal leaf 50 absorbs vertical movement of shoe 34" caused by distortion or other forces.
- Leaf 50 also can tilt on the bottom of groove 18 to absorb any distortion.
- the leaf seals the area between the seal and the housing.
- this invention provides a seal that has thermal characteristics substantially similar to the characteristics of a ceramic regenerator.
- the seal installation compensates for wear and readily absorbs load differentials.
- Seals of the invention can be used at the periphery or diameter of a rotating regenerator.
- a seal for said rotating regenerator having good oxidation resistance, good dimensional stability throughout a wide temperature range, and a low coefficient of friction and low wear when rubbing against a ceramic material, said seal comprising a thin walled case member having a base and longitudinal edges folded partially back over said base to define a longitudinal opening in one side of said case member,
- the resilient material comprises a cushion made from fibrous ceramic material.
- a seal for said rotating regenerator comprising a case member having a base and longitudinal edges folded over said base to define a longitudinal opening in one side of said case member, said case member being mounted in a groove in said housing, and
- the engine of claim 5 comprising spring means located between said case and the bottom of said groove for urging said case member out of said groove, said spring means maintaining said shoe in contact with said regenerator and sealing the area between said case and said groove.
- case member has a substantially triangular cross section, said case being truncated across one of its comers to form said opening, said case member mounted in said groove with the side opposite the truncated angle facing the bottom of the groove, and the shoe has a trapezoidal lower portion mounted within the longitudinal edges of the case, said trapezoidal portion being integral with a rectangular portion extending through said opening,
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Devices (AREA)
Abstract
A thin walled steel case has a ceramic shoe projecting through an opening in one side thereof. Externally facing shoulders along the longitudinal edges of the shoe bear against the edges of the case. A fibrous resilient ceramic material fills the remainder of the case and is located between the bottom of the shoe and the base of the case to adsorb deflecting forces.
Description
United States Patent lnventor Vemulapalli D. Rno
Woodhnven, Mich.
App]. No. 872,328
Filed Oct. 29, 1969 Patented Aug. 24, 1971 Assignee Ford Motor Company Dearborn, Mich.
CERAMIC CROSSARM SEAL FOR GAS TURBINE REGENERATORS [56] References Cited UNIT ED STATES PATENTS 3,234,999 2/1966 Atwood 277/81 X 3,273,903 9/1966 Chapman et a1. 277/96 3,273,904 9/1966 Chapman et a1. 277/96 3,298,428 1/1967 Bubniak 165/9 3,382,915 5/1968 Turunen 165/9 Primary Examiner-R0bert l. Smith AttorneysJohn R. Faulkner and Glenn S. Arendsen \\\\\I\-. \.J\\\\\ 44 1 i z PATENTED M1624 I97! 3 01 414 INVENTOR BY fmanm ATTORNEYS -section.
CERAMIC CROSSARM SEALIFOR GAS TURBINE REGENERATORS SUMMARY OF THE INVENTION Crossarm seals for gas turbine engine regenerators are subjected to widelyvarying temperature gradients both laterally across the seal and longitudinally along the seal. Coated metal seals have been used as the crossarm and have performed satisfactorily as far as friction and wear are concerned, but the differences in expansion coefficients of the metal shoe and the ceramicregenerator produce forces and distortion that lead to gas leakage.
I This invention provides a seal for use in rubbing against a ceramic regenerator that can be made of the same ceramic material as the regenerator. The rubbing shoe of the seal thus has'thermal expansion characteristics closely approximating the thermal expansion characteristics of the corresponding regenerator. In addition, the seal is capable of absorbing minor manufacturing variations between the regenerator and the engine housing. The seal comprises a'thinwalled case :member having a base and longitudinal edges folded partially back over the base to define a longitudinal opening in one side of the case member. A structurally integral ceramic shoe is positioned in the opening of the case member. Externally facing shoulders along the longitudinal edges of the ceramic shoe bear against the edges of the case member forming the opening; A resilient material is located in the case member between the base of the .case member and the inner surface of the ceramic shoe where the resilient material urges the ceramic shoe out of the case so the outersurface of the ceramic shoe bears against the moving ceramic regenerator.
A typical case member has asubstantially rectangular. cross section with a longitudinal opening in one of the larger walls. Alternatively the case can have a truncated triangular cross section. A groove is formed in the top of the bulkhead separating the'two gas flow passages of the engine housing and the case member canbe mounted in the groove on top of additional spring elements.
1 BRIEF DESCRIPTION OF THE DRAWINGS FIG; I is a plan view of a gas turbine engine showing a crossarm seal made according to this invention.
FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1 showing aseal made with a case having a rectangular cross 'FIG.3 is a cross-sectional view similar to FIG. 2 of a seal case having a truncated triangular cross section.
'F IG. 4 is a cross section of a seal having a case made with an inverted truncated triangular section. A folded spring is located between the case edges and a ceramic shoe is mounted in the base of the triangular case.
DETAILED DESCRIPTION The housing of a gas turbine engineis represented by numeral in FIG. 1. Housing 10 contains two semicircular gas passages 12 and 14 separated substantially alonga diameter by a bulkhead 16. A shallow groove 18 having a substantially rectangular cross section is cut into the upper surface of bulkhead l6 as shown in FIG. 2.
' A seal assembly is made by forming a thin walled case member 20 into a rectangular shape having a width fitting into V groove '18. Case member 20 typically ismade of a metal such as stainless steeLThe longitudinal edges 22 and 24 of case member 20 are folded partially back over its base 26 to define portion 34 projecting outward through opening 28. A resilient type spring 42 and a plurality of metal L-shaped clamps 44 fastened to the sides of bulkhead 16 project over the upper edges of case member 20 to hold the seal assembly in place in the groove. A ceramic regenerator 46 then is mounted for rotation above the seal assembly where the regenerator bears against the upper surface of shoe 30. Since thermal expansion coefficients of the regenerator and the shoe are substantially equal, thermally induced dimensional changes produce similar behavior of the regenerator and the shoe. Good contact between the shoe and the regenerator is maintained throughout a wider temperature'range to insure good sealing during all phases of engine operation. Any variations that might occur are absorbed readily by the resilient material 40 or byspring 42.
At initial installation, case 20 is moved downward in groove 18 by the force exerted by the regenerator on the seal. Spring 42 absorbs the force and applies a sealing load that holds the upper surface of the shoe against the regenerator. The spring urges the case upward to absorb shoe wear and also seals the area between the groove and the case.
Referring to the alternate construction shown in FIG. 3, case member 20' has the cross section of a truncated triangle with edges 22 and 24 projecting upward above base 26'. The wider portion 32' of the shoe 30 hasa trapezoidal cross sectionwith its angled sides corresponding to the angles of the edges 22 and 24. Narrow portion 34 of shoe 30 is substantially rectangular and has a width corresponding to the width of the opening defined by edges 22' and 24. A layer of resilient material 40 is positioned between the base of shoe 30 and the base of case member 20' and a leaf-type spring 42 is positioned between the base of the case member and the bottom of the groove. Clamps 44' are fastened to the sides of bulkhead l6 and have upper legs angled over the projecting edges of case 20 to hold the case in place on top of the bulkhead.
The FIG. 3 construction reduces any tendency of the ceramic shoe to tip laterally under the forces exerted by the rotating regenerator. Broader surface contact thus is maintained between the surface of the shoe and the regenerator, which reduces regenerator wear.
In the more flexible alternate construction shown in FIG. 4, case member 20" is an inverted version of case member 20 that has a longitudinal slot 48 cut into base 26". The ends of the case member lack both the slot 48 and opening 28" and thus connect the two sides of the case member together. A flexible metal leaf 50 is positioned between downwardly facing edges 22" and 24" and lengths of wire 52 are positioned between the shoe and the ends of the leaf to hold the leaf in position while permitting leaf flexing. Shoe 30 has its wide portion 32" projecting upward out of the case and a narrow portion 34" located within the case. Clamps 44" fastened to the bulkhead retain the seal assembly in groove 18".
Flexing of metal leaf 50 absorbs vertical movement of shoe 34" caused by distortion or other forces. Leaf 50 also can tilt on the bottom of groove 18 to absorb any distortion. In addition, the leaf seals the area between the seal and the housing.
Thus this invention provides a seal that has thermal characteristics substantially similar to the characteristics of a ceramic regenerator. The seal installation compensates for wear and readily absorbs load differentials. Seals of the invention can be used at the periphery or diameter of a rotating regenerator.
lclaim:
1. In a gas turbine engine having a housing and a rotating regenerator mounted in said housing, a seal for said rotating regenerator having good oxidation resistance, good dimensional stability throughout a wide temperature range, and a low coefficient of friction and low wear when rubbing against a ceramic material, said seal comprising a thin walled case member having a base and longitudinal edges folded partially back over said base to define a longitudinal opening in one side of said case member,
a structurally integral ceramic shoe positioned in said opening, said ceramic shoe having externally facing shoulders along its longitudinal edges, said shoulders bearing against the edges of said case forming said opening, and
resilient material located in said case member between the base of the case member and the inner surface of said ceramic shoe, said resilient material urging said ceramic shoe out of said case member so the outer surface of said ceramic shoe bears against a moving ceramic material to seal the surface between the ceramic material and the ceramic shoe.
2. The engine of claim 1 in which the resilient material comprises a cushion made from fibrous ceramic material.
3. The engine of claim 2 in which the case member has a substantially triangular cross section with one of the angles thereof being truncated to form said opening, and the shoe member has a trapezoidal lower portion mounted within said case, said trapezoidal lower portion being integral with a rectangular upper portion projecting through said opening.
4. The engine of claim 3 comprising spring means located outside of said case member for maintaining contact between said ceramic shoe and said moving ceramic material.
5. In a gas turbine engine having a housing and a rotating regenerator mounted in said housing, a seal for said rotating regenerator comprising a case member having a base and longitudinal edges folded over said base to define a longitudinal opening in one side of said case member, said case member being mounted in a groove in said housing, and
a ceramic shoe positioned in said opening of said case, said shoe bearing against said rotating re generator.
6. The engine of claim 5 comprising spring means located between said case and the bottom of said groove for urging said case member out of said groove, said spring means maintaining said shoe in contact with said regenerator and sealing the area between said case and said groove.
7 The engine of claim 6 in which the spring means is a foil member having its longitudinal edges retained in said case member and its central portion bowed away from the case member, said central portion bearing against the bottom of said groove.
8. The engine of claim 6 in which the case member has a substantially triangular cross section, said case being truncated across one of its comers to form said opening, said case member mounted in said groove with the side opposite the truncated angle facing the bottom of the groove, and the shoe has a trapezoidal lower portion mounted within the longitudinal edges of the case, said trapezoidal portion being integral with a rectangular portion extending through said opening,
Claims (7)
1. In a gas turbine engine having a housing and a rotating regenerator mounted in said housing, a seal for said rotating regenerator having good oxidation resistance, good dimensional stability throughout a wide temperature range, and a low coefficient of friction and low wear when rubbing against a ceramic material, said seal comprising a thin walled case member having a base and longitudinal edges folded partially back over said base to define a longitudinal opening in one side of said case member, a structurally integral ceramic shoe positioned in said opening, said ceramic shoe having externally facing shoulders along its longitudinal edges, said shoulders bearing against the edges of said case forming said opening, and resilient material located in said case member between the base of the case member and the inner surface of said ceramic shoe, said resilient material urging said ceramic shoe out of said case member so the outer surface of said ceramic shoe bears against a moving ceramic material to seal the surface between the ceramic material and the ceramic shoe.
2. The engine of claim 1 in which the resilient material comprises a cushion made from fibrous ceramic material.
3. The engine of claim 2 in which the case member has a substantially triangular cross section with one of the angles thereof being truncated to form said opening, and the shoe member has a trapezoidal lower portion mounted within said case, said trapezoidal lower portion being integral with a rectangular upper portion projecting through said opening.
4. The engine of claim 3 comprising spring means located outside of said case member for maintaining contact between said ceramic shoe and said moving ceramic material.
5. In a gas turbine engine having a housing and a rotating regenerator mounted in said housing, a seal for said rotating regenerator comprising a case member having a base and longitudinal edges folded over said base to define a longitudinal opening in one side of said case member, said case member being mounted in a groove in said housing, and a ceramic shoe positioned in said opening of said case, said shoe bearing against said rotating regenerator.
6. The engine of claim 5 comprising spring means located between said case and the bottom of said groove for urging said case member out of said groove, said spring means maintaining said shoe in contact with said regenerator and sealing the area between said case and said groove. 7 The engine of claim 6 in which the spring means is a foil member having its longitudinal edges retained in said case member and its central portion bowed away from the case member, said central portion bearing against the bottom of said groove.
8. The engine of claim 6 in which the case member has a substantially triangular cross section, said case being truncated across one of its corners to form said opening, said case member mounted in said groove with the side opposite the truncated angle facing the bottom of the groove, and the shoe has a trapezoidal lower portion mounted within the longitudinal edges of the case, said trapezoidal portion being intEgral with a rectangular portion extending through said opening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87232869A | 1969-10-29 | 1969-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3601414A true US3601414A (en) | 1971-08-24 |
Family
ID=25359353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US872328A Expired - Lifetime US3601414A (en) | 1969-10-29 | 1969-10-29 | Ceramic crossarm seal for gas turbine regenerators |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3601414A (en) |
| DE (1) | DE2049451A1 (en) |
| GB (1) | GB1291517A (en) |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3917291A (en) * | 1972-04-12 | 1975-11-04 | British Leyland Truck & Bus | Heat exchanger seals |
| US3931852A (en) * | 1973-11-12 | 1976-01-13 | Ford Motor Company | Gas turbine generator seal system |
| US3939903A (en) * | 1972-11-20 | 1976-02-24 | Nissan Motor Co., Ltd. | Seal assembly for a rotary regenerative heat exchanger |
| US3966353A (en) * | 1975-02-21 | 1976-06-29 | Westinghouse Electric Corporation | Ceramic-to-metal (or ceramic) cushion/seal for use with three piece ceramic stationary vane assembly |
| US4087199A (en) * | 1976-11-22 | 1978-05-02 | General Electric Company | Ceramic turbine shroud assembly |
| US4212472A (en) * | 1978-05-30 | 1980-07-15 | Nippondenso Co., Ltd. | Seal assembly for rotary heat-exchanger |
| US4295785A (en) * | 1979-03-27 | 1981-10-20 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Removable sealing gasket for distributor segments of a jet engine |
| US4398866A (en) * | 1981-06-24 | 1983-08-16 | Avco Corporation | Composite ceramic/metal cylinder for gas turbine engine |
| US4720969A (en) * | 1981-10-15 | 1988-01-26 | The United States Of America As Represented By The United States Department Of Energy | Regenerator cross arm seal assembly |
| FR2632357A1 (en) * | 1988-06-02 | 1989-12-08 | United Technologies Corp | STATOR AUBER ASSEMBLY FOR TURBOMOTEUR |
| US5080401A (en) * | 1987-03-31 | 1992-01-14 | Glyco-Antriebstechnik Gmbh | Rotary coupling for fluid between stationary and rotating machine parts |
| US5575145A (en) * | 1994-11-01 | 1996-11-19 | Chevron U.S.A. Inc. | Gas turbine repair |
| US6042334A (en) * | 1998-08-17 | 2000-03-28 | General Electric Company | Compressor interstage seal |
| US20040145251A1 (en) * | 2003-01-27 | 2004-07-29 | United Technologies Corporation | Damper for Stator Assembly |
| US20050232757A1 (en) * | 2003-05-27 | 2005-10-20 | General Electric Company | Wear resistant variable stator vane assemblies |
| US20060029494A1 (en) * | 2003-05-27 | 2006-02-09 | General Electric Company | High temperature ceramic lubricant |
| US20060245676A1 (en) * | 2005-04-28 | 2006-11-02 | General Electric Company | High temperature rod end bearings |
| US20130089417A1 (en) * | 2011-10-07 | 2013-04-11 | David J. Wiebe | Wear prevention system for securing compressor airfoils within a turbine engine |
| US20130140777A1 (en) * | 2011-12-05 | 2013-06-06 | Venmar Ces, Inc. | Rotary wheel sealing system |
| US9752592B2 (en) | 2013-01-29 | 2017-09-05 | Rolls-Royce Corporation | Turbine shroud |
| US9920940B2 (en) | 2011-12-05 | 2018-03-20 | Nortek Air Solutions Canada, Inc. | Rotary wheel sealing system |
| US10012100B2 (en) | 2015-01-15 | 2018-07-03 | Rolls-Royce North American Technologies Inc. | Turbine shroud with tubular runner-locating inserts |
| US10094233B2 (en) | 2013-03-13 | 2018-10-09 | Rolls-Royce Corporation | Turbine shroud |
| US10100660B2 (en) | 2015-01-29 | 2018-10-16 | Rolls-Royce Corporation | Seals for gas turbine engines |
| US10190434B2 (en) | 2014-10-29 | 2019-01-29 | Rolls-Royce North American Technologies Inc. | Turbine shroud with locating inserts |
| US10240476B2 (en) | 2016-01-19 | 2019-03-26 | Rolls-Royce North American Technologies Inc. | Full hoop blade track with interstage cooling air |
| US10287906B2 (en) | 2016-05-24 | 2019-05-14 | Rolls-Royce North American Technologies Inc. | Turbine shroud with full hoop ceramic matrix composite blade track and seal system |
| US10316682B2 (en) | 2015-04-29 | 2019-06-11 | Rolls-Royce North American Technologies Inc. | Composite keystoned blade track |
| US10371008B2 (en) | 2014-12-23 | 2019-08-06 | Rolls-Royce North American Technologies Inc. | Turbine shroud |
| US10370985B2 (en) | 2014-12-23 | 2019-08-06 | Rolls-Royce Corporation | Full hoop blade track with axially keyed features |
| US10415415B2 (en) | 2016-07-22 | 2019-09-17 | Rolls-Royce North American Technologies Inc. | Turbine shroud with forward case and full hoop blade track |
| US11053806B2 (en) | 2015-04-29 | 2021-07-06 | Rolls-Royce Corporation | Brazed blade track for a gas turbine engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234999A (en) * | 1963-10-07 | 1966-02-15 | Chrysler Corp | Regenerator seal |
| US3273903A (en) * | 1963-10-07 | 1966-09-20 | Chrysler Corp | Regenerator seal for a gas turbine engine |
| US3273904A (en) * | 1963-10-07 | 1966-09-20 | Chrysler Corp | Regenerator seal with diaphragm support |
| US3298428A (en) * | 1965-08-02 | 1967-01-17 | Gen Motors Corp | Rotary regenerator seal |
| US3382915A (en) * | 1965-05-17 | 1968-05-14 | Gen Motors Corp | Rotary regenerator |
-
1969
- 1969-10-29 US US872328A patent/US3601414A/en not_active Expired - Lifetime
-
1970
- 1970-09-21 GB GB44821/70A patent/GB1291517A/en not_active Expired
- 1970-10-08 DE DE19702049451 patent/DE2049451A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234999A (en) * | 1963-10-07 | 1966-02-15 | Chrysler Corp | Regenerator seal |
| US3273903A (en) * | 1963-10-07 | 1966-09-20 | Chrysler Corp | Regenerator seal for a gas turbine engine |
| US3273904A (en) * | 1963-10-07 | 1966-09-20 | Chrysler Corp | Regenerator seal with diaphragm support |
| US3382915A (en) * | 1965-05-17 | 1968-05-14 | Gen Motors Corp | Rotary regenerator |
| US3298428A (en) * | 1965-08-02 | 1967-01-17 | Gen Motors Corp | Rotary regenerator seal |
Cited By (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3917291A (en) * | 1972-04-12 | 1975-11-04 | British Leyland Truck & Bus | Heat exchanger seals |
| US3939903A (en) * | 1972-11-20 | 1976-02-24 | Nissan Motor Co., Ltd. | Seal assembly for a rotary regenerative heat exchanger |
| US3931852A (en) * | 1973-11-12 | 1976-01-13 | Ford Motor Company | Gas turbine generator seal system |
| US3966353A (en) * | 1975-02-21 | 1976-06-29 | Westinghouse Electric Corporation | Ceramic-to-metal (or ceramic) cushion/seal for use with three piece ceramic stationary vane assembly |
| US4087199A (en) * | 1976-11-22 | 1978-05-02 | General Electric Company | Ceramic turbine shroud assembly |
| US4212472A (en) * | 1978-05-30 | 1980-07-15 | Nippondenso Co., Ltd. | Seal assembly for rotary heat-exchanger |
| US4295785A (en) * | 1979-03-27 | 1981-10-20 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Removable sealing gasket for distributor segments of a jet engine |
| US4398866A (en) * | 1981-06-24 | 1983-08-16 | Avco Corporation | Composite ceramic/metal cylinder for gas turbine engine |
| US4720969A (en) * | 1981-10-15 | 1988-01-26 | The United States Of America As Represented By The United States Department Of Energy | Regenerator cross arm seal assembly |
| US5080401A (en) * | 1987-03-31 | 1992-01-14 | Glyco-Antriebstechnik Gmbh | Rotary coupling for fluid between stationary and rotating machine parts |
| FR2632357A1 (en) * | 1988-06-02 | 1989-12-08 | United Technologies Corp | STATOR AUBER ASSEMBLY FOR TURBOMOTEUR |
| US4897021A (en) * | 1988-06-02 | 1990-01-30 | United Technologies Corporation | Stator vane asssembly for an axial flow rotary machine |
| US5575145A (en) * | 1994-11-01 | 1996-11-19 | Chevron U.S.A. Inc. | Gas turbine repair |
| US6042334A (en) * | 1998-08-17 | 2000-03-28 | General Electric Company | Compressor interstage seal |
| US20040145251A1 (en) * | 2003-01-27 | 2004-07-29 | United Technologies Corporation | Damper for Stator Assembly |
| US7291946B2 (en) * | 2003-01-27 | 2007-11-06 | United Technologies Corporation | Damper for stator assembly |
| US20050232757A1 (en) * | 2003-05-27 | 2005-10-20 | General Electric Company | Wear resistant variable stator vane assemblies |
| US20060029494A1 (en) * | 2003-05-27 | 2006-02-09 | General Electric Company | High temperature ceramic lubricant |
| US7220098B2 (en) | 2003-05-27 | 2007-05-22 | General Electric Company | Wear resistant variable stator vane assemblies |
| US7543992B2 (en) | 2005-04-28 | 2009-06-09 | General Electric Company | High temperature rod end bearings |
| US20060245676A1 (en) * | 2005-04-28 | 2006-11-02 | General Electric Company | High temperature rod end bearings |
| US20130089417A1 (en) * | 2011-10-07 | 2013-04-11 | David J. Wiebe | Wear prevention system for securing compressor airfoils within a turbine engine |
| US8920116B2 (en) * | 2011-10-07 | 2014-12-30 | Siemens Energy, Inc. | Wear prevention system for securing compressor airfoils within a turbine engine |
| US20130140777A1 (en) * | 2011-12-05 | 2013-06-06 | Venmar Ces, Inc. | Rotary wheel sealing system |
| US9772036B2 (en) * | 2011-12-05 | 2017-09-26 | Nortek Air Solutions Canada, Inc. | Self-adjusting rotary wheel sealing system with foam mount |
| US9920940B2 (en) | 2011-12-05 | 2018-03-20 | Nortek Air Solutions Canada, Inc. | Rotary wheel sealing system |
| US9752592B2 (en) | 2013-01-29 | 2017-09-05 | Rolls-Royce Corporation | Turbine shroud |
| US10094233B2 (en) | 2013-03-13 | 2018-10-09 | Rolls-Royce Corporation | Turbine shroud |
| US10190434B2 (en) | 2014-10-29 | 2019-01-29 | Rolls-Royce North American Technologies Inc. | Turbine shroud with locating inserts |
| US10371008B2 (en) | 2014-12-23 | 2019-08-06 | Rolls-Royce North American Technologies Inc. | Turbine shroud |
| US10370985B2 (en) | 2014-12-23 | 2019-08-06 | Rolls-Royce Corporation | Full hoop blade track with axially keyed features |
| US10012100B2 (en) | 2015-01-15 | 2018-07-03 | Rolls-Royce North American Technologies Inc. | Turbine shroud with tubular runner-locating inserts |
| US10738642B2 (en) | 2015-01-15 | 2020-08-11 | Rolls-Royce Corporation | Turbine engine assembly with tubular locating inserts |
| US10100660B2 (en) | 2015-01-29 | 2018-10-16 | Rolls-Royce Corporation | Seals for gas turbine engines |
| US10316682B2 (en) | 2015-04-29 | 2019-06-11 | Rolls-Royce North American Technologies Inc. | Composite keystoned blade track |
| US11053806B2 (en) | 2015-04-29 | 2021-07-06 | Rolls-Royce Corporation | Brazed blade track for a gas turbine engine |
| US10240476B2 (en) | 2016-01-19 | 2019-03-26 | Rolls-Royce North American Technologies Inc. | Full hoop blade track with interstage cooling air |
| US10287906B2 (en) | 2016-05-24 | 2019-05-14 | Rolls-Royce North American Technologies Inc. | Turbine shroud with full hoop ceramic matrix composite blade track and seal system |
| US10415415B2 (en) | 2016-07-22 | 2019-09-17 | Rolls-Royce North American Technologies Inc. | Turbine shroud with forward case and full hoop blade track |
| US10995627B2 (en) | 2016-07-22 | 2021-05-04 | Rolls-Royce North American Technologies Inc. | Turbine shroud with forward case and full hoop blade track |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1291517A (en) | 1972-10-04 |
| DE2049451A1 (en) | 1971-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3601414A (en) | Ceramic crossarm seal for gas turbine regenerators | |
| US3559725A (en) | Foil seal for rotating heat exchangers of gas turbine engines | |
| US4621930A (en) | Foil thrust bearing cooling | |
| KR930702647A (en) | Ceramic thermal breakers in support structures | |
| SE7711977L (en) | SEAL FOR SEALING TWO MACHINE ELEMENTS AND USING THE SEAL | |
| US3062555A (en) | Packed joint | |
| JP2008014298A (en) | Seal device for turbine engine, turbine engine, and method for sealing | |
| KR840008874A (en) | Optical readout storage disc | |
| KR840003112A (en) | Slot type disc recorder | |
| US3939903A (en) | Seal assembly for a rotary regenerative heat exchanger | |
| JPH1068466A (en) | Sealing device for parts rotating opposite to each other | |
| US2575818A (en) | Fluid seal | |
| US3622737A (en) | Foil seal for gas turbine regenerator | |
| US3325172A (en) | Dry seal for rotary shaft | |
| KR880009186A (en) | Leveraged Seal with Controlled Gap | |
| US3601182A (en) | Rim construction for gas turbine rotating heat exchangers | |
| KR850002890A (en) | Valve Plate for Sliding Gate Valve | |
| US3672475A (en) | Dash pot including temperature sensitive valve means | |
| JPS60251391A (en) | Sealing mechanism for rotary regenerating type heat exchanging machine | |
| US3154310A (en) | Floating oil seal | |
| US3909166A (en) | Oil seal means of a rotary piston engine | |
| US3692098A (en) | Thermal regenerators | |
| US3630582A (en) | Sealing joints | |
| JPS6314079Y2 (en) | ||
| JPH0614147Y2 (en) | mechanical seal |