CN105275513B - Turbine part - Google Patents

Turbine part Download PDF

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Publication number
CN105275513B
CN105275513B CN201510294617.3A CN201510294617A CN105275513B CN 105275513 B CN105275513 B CN 105275513B CN 201510294617 A CN201510294617 A CN 201510294617A CN 105275513 B CN105275513 B CN 105275513B
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CN
China
Prior art keywords
hook portion
shield
outer shield
interior
turbine part
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Active
Application number
CN201510294617.3A
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Chinese (zh)
Other versions
CN105275513A (en
Inventor
F.W.小罗伯茨
V.J.摩根
G.C.塔克萨彻尔
J.J.基特尔森
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General Electric Co PLC
Original Assignee
General Electric Co
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Filing date
Publication date
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Publication of CN105275513A publication Critical patent/CN105275513A/en
Application granted granted Critical
Publication of CN105275513B publication Critical patent/CN105275513B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/001Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/60Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603Composites; e.g. fibre-reinforced
    • F05D2300/6033Ceramic matrix composites [CMC]

Abstract

Disclose a kind of turbine part.Turbine part includes outer shield and interior shield, which has:First hook portion region, extends above the first part of outer shield;With the second hook portion region, extend above the second part of outer shield.First hook portion gap, the second hook portion gap, the first radial clearance and the second radial clearance configure and are arranged as that interior shield is allowed to deviate outer shield under heat load.In addition or alternatively, interior shield includes ceramic based composite fibre, has the pyroconductivity less than 200W/m k and more than 10W/m k.

Description

Turbine part
Technical field
The present invention relates to turbine parts.More particularly, it relates to the turbine part with interior shield and outer shield.
Background technology
The higher temperature and pressure operation of turbine part in turbogenerator and power generation system allows to improve Efficiency and the operation in neotectonics.The material that can be operated under this higher temperature and pressure is selected to be difficult. This material may be both expensive, be difficult to produce or be difficult to make.In addition, the use of this different materials can need Modification to cooling body, this can generate other complications.
General it is desired that using less material for similar or better operation.Weight is reduced using less material Relevant cost is measured, reduced and manufactured, material cost is reduced and several further advantages is provided.But use is less The power not being expected to that material can generate complicated geometry requirement and/or not generated before can generating, such as stress.In addition, such as The case where for using different materials, can need the complicated and/or high modification to cooling body using less material, This can generate other complications.
Thus, there is the constant demand to producing following material:It can be subjected to higher temperature and pressure;It can be with lower Amount/weight applied;It can be operated without generating the power not being expected to;And it can in the operating condition use without adopting With complicated and/or high cooling body.
Show that one or more improved turbine parts will be expected in the art compared with prior art.
Invention content
In embodiment, turbine part includes outer shield and interior shield, which has:First hook portion region, Extend above the first part of outer shield;With the second hook portion region, extend above the second part of outer shield.First hook portion Region and first part limit the first hook portion gap, and the second hook portion region and second part limit the second hook portion gap.First Radial clearance extends between the first hook portion region opposite with the first hook portion gap and outer shield, and the second radial clearance with Extend between the second opposite hook portion region of second hook portion gap and outer shield.First hook portion gap, the second hook portion gap, first Radial clearance and the second radial clearance configure and are arranged as that interior shield is allowed to deviate outer shield under heat load.
In another embodiment, turbine part includes outer shield and interior shield, which has:First hook portion region, It extends above the first part of outer shield;With the second hook portion region, extend above the second part of outer shield.Interior shield Cover includes ceramic based composite fibre, has the pyroconductivity less than 200W/m k and more than 10W/m k.
In another embodiment, turbine part includes outer shield and interior shield, which has:First hook portion region, It extends above the first part of outer shield;With the second hook portion region, extend above the second part of outer shield.First Hook portion region and first part limit the first hook portion gap, and the second hook portion region and second part limit the second hook portion gap, And the first hook portion gap, the second hook portion gap configure and are arranged as that interior shield is allowed to deviate outer shield under heat load.Interior shield Cover includes ceramic based composite fibre, has the pyroconductivity less than 200W/m k and more than 10W/m k.
The first technical solution of the present invention is a kind of turbine part comprising:Outer shield;And interior shield, have:The One hook portion region, extends above the first part of outer shield;With the second hook portion region, on the second part of outer shield Fang Yanshen;Wherein, the first hook portion region and first part limit the first hook portion gap, and the second hook portion region and second part limit Fixed second hook portion gap;Wherein, the first radial clearance the first hook portion region opposite with the first hook portion gap and outer shield it Between extend, and the second radial clearance extends between the second hook portion region opposite with the second hook portion gap and outer shield;Wherein, First hook portion gap, the second hook portion gap, the first radial clearance and the second radial clearance configure and are arranged as allowing interior shield Deviate outer shield under heat load.
The second technical solution of the present invention is that in the first technical solution of the present invention, interior shield includes that ceramic base is compound Material.
The third technical solution of the present invention is that in the second technical solution of the present invention, ceramic matric composite includes Si- Fiber C and SiC matrix.
The 4th technical solution of the present invention is that in the third technical solution of the present invention, Si-C fibers are compound in ceramic base By volume at least 20% concentration in object.
The 5th technical solution of the present invention is that in the first technical solution of the present invention, outer shield includes metal or metal Property material.
The 6th technical solution of the present invention is, in the first technical solution of the present invention, interior shield, which has, is less than 200W/m The pyroconductivity of k.
The 7th technical solution of the present invention is, in the first technical solution of the present invention, interior shield, which has, is more than 10W/m k Pyroconductivity.
The 8th technical solution of the present invention is, in the first technical solution of the present invention, interior shield has about 120W/m The pyroconductivity of k.
The 9th technical solution of the present invention is that in the first technical solution of the present invention, interior shield and outer shield are in turbine It is not coupled during the operation of component.
The tenth technical solution of the present invention is that in the first technical solution of the present invention, turbine part further includes shock plate, It is located between interior shield and outer shield.
The 11st technical solution of the present invention is that in the tenth technical solution of the present invention, shock plate includes metal.
The 12nd technical solution of the present invention is that in the first technical solution of the present invention, outer shield includes internal cavity.
The 13rd technical solution of the present invention is, in the 12nd technical solution of the present invention, internal cavity is pressurized.
The 14th technical solution of the present invention is that in the 13rd technical solution of the present invention, internal cavity is pressurized to In or more than hot gas path pressure pressure.
The 15th technical solution of the present invention is that in the first technical solution of the present invention, turbine part further includes transverse direction Gap extends parallel between the first hook portion region and the second hook portion region at least part of interior shield.
The 16th technical solution of the present invention is that in the first technical solution of the present invention, turbine part further includes adding Interior shield, be positioned as shield in adjacent, and extend above the first part of outer shield and the second part of outer shield.
The 17th technical solution of the present invention is that in the first technical solution of the present invention, turbine part further includes environment Curtain coating, being positioned at will be in at least part for the interior shield that contacted by hot gas path.
The 18th technical solution of the present invention is that in the 17th technical solution of the present invention, environment shielding coating is can Wear away friction coatings.
The 19th technical solution of the present invention is a kind of turbine part comprising:Outer shield;And interior shield, have: First hook portion region, extends above the first part of outer shield;With the second hook portion region, in the second part of outer shield Top extends;Wherein, interior shield includes ceramic based composite fibre, and there is the heat less than 200W/m k and more than 10W/m k to pass Conductance.
The 20th technical solution of the present invention is a kind of turbine part comprising:Outer shield;And interior shield, have: First hook portion region, extends above the first part of outer shield;With the second hook portion region, in the second part of outer shield Top extends;Wherein, the first hook portion gap of the first hook portion region and first part's restriction, and the second hook portion region and second part The second hook portion gap is limited, and the first hook portion gap and the second hook portion gap configure and be arranged as allowing interior shield in heat load Lower deviation outer shield;Wherein, interior shield includes ceramic based composite fibre, is had less than 200W/m k and more than 10W/m k's Pyroconductivity.
Other features and advantages of the present invention will become obvious from the following more detailed description carried out in conjunction with attached drawing, Attached drawing shows the principle of the present invention by means of example.
Description of the drawings
Fig. 1 is the perspective view according to the embodiment of the component with interior shield and outer shield of the disclosure.
Whenever possible, identical part will be represented using identical label through attached drawing.
Specific implementation mode
Provide a kind of turbine part.Such as it is one or more in disclosed feature with failing to be included herein Principle is compared, and embodiment of the disclosure can carry out simpler reparation or replacement, can be subjected to higher temperature and pressure, energy It is enough with lower amount/weight application, can be operated without generate the power not being expected to, can use in the operating condition and Not using complicated and/or high cooling body, and/or it can carry out mechanical load and reduce leakage, thus enhance and start Machine operating efficiency.
Fig. 1 show for example can power generation system, turbogenerator, or both in the turbine part 100 that uses Embodiment.Turbine part 100 includes outer shield 101 and interior shield 103, which has:First hook portion region 105, It extends above the first part 109 of outer shield 101;With the second hook portion region 107, in the second part of outer shield 101 111 tops extend.First hook portion gap 113 of first hook portion region 105 and the restriction of first part 109, and the second hook portion region 107 The second hook portion gap 115 is limited with second part 111.First radial clearance 114 is opposite with the first hook portion gap 113 first Extend between hook portion region 105 and outer shield 101, and the second radial clearance 116 is opposite with the second hook portion gap 115 second Extend between hook portion region 107 and outer shield 101.First hook portion gap 113, the second hook portion gap 115, the first radial clearance 114 and second radial clearance 116 configuration and be arranged as that interior shield 103 is allowed to deviate outer shield 101 under heat load.
First hook portion gap 113, the second hook portion gap 115, the first radial clearance 114 and the second radial clearance 116 are Allow to deviate any geometry appropriate of stress to be reduced or eliminated during the operating with of turbine part 100.For example, In one embodiment, geometry appropriate is included the cuboid channel that the top of shield 103 extends.Although having used art Language " hook portion ", and Fig. 1 shows the first bending part 102, immediately the first flat 104 of the first bending part 102, tight Connect the second bending part 106 of the first flat 104, the second flat 108 of immediately the second bending part 106, wherein Second flat 108 is in substantially parallel relationship to interior shield and hot gas path 119 and extends it should be appreciated that extend into The angled, arciform of plane, curling, curve or the other configurations of few three separation should be considered in term " hook portion ".Its Its geometry appropriate include but not limited to rectangular cylinder, slit, cylinder (for example, semicolumn) part, with connection The bow portion on the flat or generally flat boundary of the end in bow portion, or any other geometry deviateed is provided.
First hook portion region 105, the first radial clearance 114 and the first part 109 immediately leading edge compared with rear 129 127.Second hook portion region 107, the second radial clearance 116 and second part 111 immediately rear 129 compared with leading edge 127. Interior shield 103 is adjustably fixed to outer shield 101 by the first hook portion region 105 and the second hook portion region 107.Implement at one In example, interior shield 103 and outer shield 101 can be fixed together and without being bolted, by relying on outer shield 101 109 top of first part the first hook portion region 105 extended and extend above the second part 111 of outer shield 101 second Hook portion region 107.Any other power appropriate provide mechanism can be used for further fixing outer shield 101 and interior shield 103, with And other interior shields in the embodiment with multiple interior shields 103.
In one embodiment, in conjunction with the outer shield 101 of the material of selection and interior shield 103 configuration allow in shield 103 remove from the selectivity of outer shield 101, repair, and/or replace.For example, in one embodiment, interior shield 103 and outer shield Cover 101 is not coupled under the operating condition appropriate of turbine part 100.As used in this article, term " connection " means Such as the local buckling or deformation of the outer shield 101 above the second flat 108.Operating condition appropriate includes but unlimited On from 1200 °F to 3200 °F (on about 650 DEG C to 1760 DEG C).
Interior shield 103 and outer shield 101 are including that in power generation system, turbogenerator or can utilize turbine part Any material appropriate used in the operating condition of 100 any other system.In one embodiment, outer shield 101 wraps Metal or metallic alloy are included, for example, nickel-base alloy or stainless steel.In one embodiment, interior shield 103 is multiple including ceramic base Close object.As used in this article, term " ceramic matrix composite " includes but not limited to carbon-fiber reinforced carbon (C/C), carbon fiber Dimension enhancing silicon carbide (C/SiC), silicon carbide fiber reinforced silicon carbide (SiC/SiC) and silicon carbide fibre enhancing oxygroup are compound Object.In one embodiment, ceramic matric composite compared with layered ceramic structure have increased elongation, fracture toughness, Thermal shock, dynamic load ability and anisotropic properties.A kind of ceramic matrix composite appropriate includes SiC-C fibers and SiC Matrix is in following concentration in ceramic matrix composite for example, carrying SiC fibers by volume:At least about 20%, for example, At least about 23%, at least about 28%, at least about 30%, between about 23% and about 32%, or wherein appoint What combination, sub-portfolio, range or subrange appropriate.
The material for interior shield 103 is selected to provide the pyroconductivity of the range of choice for turbine part 100.One In a embodiment, the pyroconductivity of interior shield 103 and/or the material for interior shield 103 is less than 200W/m k, is less than 150W/ M k, any combination, sub-portfolio, range or subrange appropriate less than 140W/m k, less than 130W/m k or wherein.This Outside or alternatively, in one embodiment, the pyroconductivity of interior shield 103 and/or the material for interior shield 103 is more than 10W/ M k, any combination appropriate less than 50W/m k, more than 100W/m k, less than 110W/m k or wherein, sub-portfolio, model It encloses or subrange.In one embodiment, pyroconductivity is 120W/m k.
Interior shield 103 and/or outer shield 101 include any other feature appropriate, can not adversely under heat load It influences to deviate.For example, in one embodiment, outer shield 101 includes internal cavity 117, allows fluid (for example, air or pressure Contracting air) flowing.Internal cavity 117 can for example be sealed by the spline on the circumferential surface of turbine part 100 and in leading edge 127 and/or on rear 129 compliance sealing and sealed.In one embodiment, such as by internal cavity 117 it is forced into Or operating pressure and/or pressure higher than hot gas path 119, the hot gas path 119 along interior shield 103 distal portions Opposite outer shield 101 is cross-section.In one embodiment, lateral clearance 121 is from the first hook portion region 105 to the second hook portion region 107 parallel, general parallel orientation or tangentially extend between interior shield 103 and outer shield 101, and allow heat from interior shield 103 It is transferred to outer shield 101.In another embodiment, shock plate 123 is positioned between interior shield 103 and outer shield 101.Shock plate 123 include identical as interior shield 103, similar or different material, and provides cooling by transmitting heat to internal cavity 117.
Interior shield 103 comes including any feature appropriate in response to operating parameter (for example, temperature and pressure), operation ginseng Number is derived from the hot gas contact being positioned as by hot gas path 119.For example, in one embodiment, interior shield 103 includes Environment shielding coating 125 is located on some or all surfaces of interior shield 103, which is positioned to and in hot gas Hot gas contact in body path 119.Environment shielding coating 125 is times that can carry out the operation in hot gas path 119 What coating appropriate.In order to adapt to vane tip gap, in one embodiment, the interior shield 103 in hot gas path 119 Upper includes abradable friction coatings (not shown).For environment shielding coating 125 and/or the material appropriate of abradable friction coatings Material includes but not limited to strontium barium aluminosilicate, mullite, yttrium stable zirconium oxide, yttrium monocrystalline (yttria mono) and two silicon Hydrochlorate, ytterbium monocrystalline (yterbium mono) and dislicata and combination thereof.
Although describing the present invention by reference to one or more embodiments, those skilled in the art will be understood that, It can carry out various changes and replace equivalent without departing from the scope of the present invention for their element.In addition, many can be carried out It changes so that specific condition or material adapt to basic categories of the teachings of the present invention without departing from them.Therefore, it is intended that be, this Invention is not limited to the open specific embodiment as the optimal mode visualized for implementing the present invention, but the present invention will wrap Include all embodiments fallen within the scope of the appended claims.

Claims (16)

1. a kind of turbine part, including:
Outer shield;And
Interior shield, the interior shield close on the hot gas path with hot gas pressure, and the interior shield has:First hook portion area Domain extends above the first part of the outer shield;With the second hook portion region, on the second part of the outer shield Fang Yanshen;
Wherein, first hook portion region and the first part limit the first hook portion gap, and second hook portion region and The second part limits the second hook portion gap;
Wherein, the first radial clearance first hook portion region opposite with first hook portion gap and the outer shield it Between extend, and the second radial clearance second hook portion region opposite with second hook portion gap and the outer shield it Between extend;
Wherein, first hook portion gap, second hook portion gap, first radial clearance and second radial direction Gap configures and is arranged as that the interior shield is allowed to deviate the outer shield under heat load;
Wherein, the interior shield includes ceramic matric composite, and the ceramic matric composite includes Si-C fibers and SiC bases Matter, the Si-C fibers are in dense between about 23% and about 32% in the ceramic matric composite by volume Degree.
2. turbine part according to claim 1, which is characterized in that the outer shield includes metal or metallic alloy.
3. turbine part according to claim 1, which is characterized in that there is the interior shield heat less than 200W/mk to pass Conductance.
4. turbine part according to claim 1, which is characterized in that the interior shield has the heat transfer more than 10W/mk Rate.
5. turbine part according to claim 1, which is characterized in that the interior shield and the outer shield are in turbine part Operation during be not coupled.
6. turbine part according to claim 1, which is characterized in that further include shock plate, be located in the interior shield Between the outer shield.
7. turbine part according to claim 6, which is characterized in that the shock plate includes metal.
8. turbine part according to claim 1, which is characterized in that the outer shield includes internal cavity.
9. turbine part according to claim 8, which is characterized in that the internal cavity is pressurized.
10. turbine part according to claim 9, which is characterized in that the internal cavity is pressurized to equal to or more than institute State the pressure of hot gas path pressure.
11. turbine part according to claim 1, which is characterized in that further include lateral clearance, in first hook portion At least part between region and second hook portion region with the interior shield extends parallel to.
12. turbine part according to claim 1, which is characterized in that further include additional interior shield, be positioned as abutting The interior shield, and extend above the first part of the outer shield and the second part of the outer shield.
13. turbine part according to claim 1, which is characterized in that further include environment shielding coating, be positioned at quilt In at least part of the interior shield of the hot gas path contact.
14. turbine part according to claim 13, which is characterized in that the environment shielding coating is that abradable friction applies Layer.
15. a kind of turbine part, including:
Outer shield;And
Interior shield, has:First hook portion region, extends above the first part of the outer shield;With the second hook portion area Domain extends above the second part of the outer shield;
Wherein, the interior shield includes ceramic matric composite, and the ceramic matric composite is included in the Si-C in SiC matrix The ceramic based composite fibre of fiber, the ceramics based composite fibre have the pyroconductivity less than 200W/mk and more than 10W/mk; And
Wherein, the Si-C fibers are in by volume between about 23% and about 32% in the ceramic matric composite Concentration.
16. a kind of turbine part, including:
Outer shield;And
Interior shield, has:First hook portion region, extends above the first part of the outer shield;With the second hook portion area Domain extends above the second part of the outer shield;
Wherein, first hook portion region and the first part limit the first hook portion gap, and second hook portion region and The second part limits the second hook portion gap, and first hook portion gap and the configuration of second hook portion gap and arrangement To allow the interior shield to deviate the outer shield under heat load;
Wherein, the interior shield includes ceramic matric composite, and the ceramic matric composite is included in the Si-C in SiC matrix The ceramic based composite fibre of fiber, the ceramics based composite fibre have the pyroconductivity less than 200W/mk and more than 10W/mk; And
Wherein, the Si-C fibers are in by volume between about 23% and about 32% in the ceramic matric composite Concentration.
CN201510294617.3A 2014-06-02 2015-06-02 Turbine part Active CN105275513B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/292,985 US20150345308A1 (en) 2014-06-02 2014-06-02 Turbine component
US14/292985 2014-06-02

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CN105275513A CN105275513A (en) 2016-01-27
CN105275513B true CN105275513B (en) 2018-07-24

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US (1) US20150345308A1 (en)
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CN (1) CN105275513B (en)
CH (1) CH709761B1 (en)
DE (1) DE102015107848A1 (en)

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US20150345308A1 (en) 2015-12-03
CH709761B1 (en) 2019-07-15
DE102015107848A1 (en) 2015-12-03
CN105275513A (en) 2016-01-27
JP2015227661A (en) 2015-12-17
JP6979751B2 (en) 2021-12-15
CH709761A2 (en) 2015-12-15

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