[특허]Wire seal for metering of turbine blade cooling fluids

Siemens Energy, Inc.

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특허 상세정보

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Wire seal for metering of turbine blade cooling fluids

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-005/02 F01D-005/30 F04D-029/26
미국특허분류(USC)	416/204A;
출원번호	US-0020074 (2011-02-03)
등록번호	US-8550785 (2013-10-08)
발명자 / 주소	Afanasiev, Gennadiy Brillert, Dieter
출원인 / 주소	Siemens Energy, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 19

초록
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A cooling fluid metering system for a turbine blade of a gas turbine engine is disclosed. The cooling fluid metering system may include a cooling channel positioned between a root of a turbine blade and an offset rotor sealing plate for supplying cooling fluids to turbine blades. At one point, a portion of the cooling channel may include a gap between the root and the offset rotor sealing plate. The gap may be sealed with teardrop shaped seal positioned within a teardrop shaped cavity at the gap. The cavity and seal may be positioned such that during ope...

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1. A turbine engine, comprising: a rotor assembly including at least one row of turbine blades extending radially outward from a rotor, wherein a root of at least one turbine blade is coupled to a rotor disc and extends radially outward therefrom;at least one rotor sealing plate offset axially from the root of the at least one turbine blade such that a gap is formed between the rotor sealing plate and the root of the at least one turbine blade; wherein the gap forms a portion of a cooling fluid channel of a turbine blade cooling system;a first axially extending seal arm extending axially from the root of the turbine blade towards the rotor sealing plate having a radially inner surface positioned at an acute angle such that an axially outer end of the first axially extending seal arm is radially outward from an intersection between the radially inner surface and the turbine blade;a second axially extending seal arm extending axially from the rotor disc towards the rotor sealing plate having a radially outer surface positioned at an acute angle such that an axially outer end of the second axially extending seal arm is radially outward from an intersection between the radially outer surface and the turbine blade;wherein each of the first axially extending seal arm, the second axially extending seal arm and the rotor sealing plate form a portion of a seal cavity having a teardrop shaped cross-section; anda teardrop shaped seal filling at least a portion of the seal cavity and positioned in the seal cavity for metering cooling fluid flow through the cooling fluid channel and past the gap. 2. The turbine engine of claim 1, wherein the teardrop shaped seal is formed from a wire seal. 3. The turbine engine of claim 1, wherein the teardrop shaped seal includes a first outer surface that bears against the radially inner surface of the first axially extending seal arm and a second outer surface that bears against the radially outer surface of the second axially extending seal arm, wherein the first and second outer surfaces are coupled together at a tip. 4. The turbine engine of claim 1, wherein the teardrop shaped seal is formed from a material configured to conform to the radially inner surface of the first axially extending arm and the radially outer surface of the second axially extending arm during operation as centrifugal forces force the teardrop shaped seal radially outward to seal the gap. 5. The turbine engine of claim 1, wherein a radially outermost portion of the teardrop shaped cavity is located at the gap between the rotor sealing plate and the root of the at least one turbine blade. 6. The turbine engine of claim 1, wherein an outermost point of the first axially extending seal arm in an axial direction is generally aligned with an outermost point of the second axially extending seal arm in the axial direction. 7. The turbine engine of claim 1, wherein the rotor sealing plate includes a generally linear outer surface opposing the first and second axially extending arms. 8. The turbine engine of claim 1, wherein the teardrop shaped seal includes at least one hole extending through the seal for metering the flow of cooling fluids therethrough. 9. A fluid cooling rotor assembly for a turbine engine, comprising: a rotor assembly including at least one row of turbine blades extending radially outward from a rotor, wherein a root of at least one turbine blade is coupled to a rotor disc and extends radially outward therefrom;at least one rotor sealing plate offset axially from the root of the at least one turbine blade such that a gap is formed between the rotor sealing plate and the root of the at least one turbine blade; wherein the gap forms a portion of a cooling fluid channel of a turbine blade cooling system;a first axially extending seal arm extending axially from the root of the turbine blade towards the rotor sealing plate having a radially inner surface positioned at an acute angle such that an axially outer end of the first axially extending seal arm is radially outward from an intersection between the radially inner surface and the turbine blade;a second axially extending seal arm extending axially from the rotor disc towards the rotor sealing plate having a radially outer surface positioned at an acute angle such that an axially outer end of the second axially extending seal arm is radially outward from an intersection between the radially outer surface and the turbine blade;wherein each of the first axially extending seal arm, the second axially extending seal arm and the rotor sealing plate form a portion of a seal cavity having a teardrop shaped cross-section;a teardrop shaped seal filling at least a portion of the seal cavity and positioned in the seal cavity for metering cooling fluid flow through the cooling fluid channel and past the gap. 10. The fluid cooling rotor assembly of claim 9, wherein the teardrop shaped seal includes at least one hole extending through the seal for metering the flow of cooling fluids therethrough. 11. The fluid cooling rotor assembly of claim 9, wherein the teardrop shaped seal includes a first outer surface that bears against the radially inner surface of the first axially extending seal arm and a second outer surface that bears against the radially outer surface of the second axially extending seal arm, wherein the first and second outer surfaces are coupled together at a tip. 12. The fluid cooling rotor assembly of claim 9, wherein the teardrop shaped seal is formed from a material configured to conform to the radially inner surface of the first axially extending arm and the radially outer surface of the second axially extending arm during operation as centrifugal forces force the teardrop shaped seal radially outward to seal the gap. 13. The fluid cooling rotor assembly of claim 9, wherein a radially outermost portion of the teardrop shaped cavity is located at the gap between the rotor sealing plate and the root of the at least one turbine blade. 14. The fluid cooling rotor assembly of claim 9, wherein an outermost point of the first axially extending seal arm in an axial direction is generally aligned with an outermost point of the second axially extending seal arm in the axial direction. 15. The fluid cooling rotor assembly of claim 8, wherein the rotor sealing plate includes a generally linear outer surface opposing the first and second axially extending arms. 16. A turbine engine, comprising: a rotor assembly including at least one row of turbine blades extending radially outward from a rotor, wherein a root of at least one turbine blade is coupled to a rotor disc and extends radially outward therefrom;at least one rotor sealing plate offset axially from the root of the at least one turbine blade such that a gap is formed between the rotor sealing plate and the root of the at least one turbine blade; wherein the gap forms a portion of a cooling fluid channel of a turbine blade cooling system;a first axially extending seal arm extending axially from the root of the turbine blade towards the rotor sealing plate having a radially inner surface positioned at an acute angle such that an axially outer end of the first axially extending seal arm is radially outward from an intersection between the radially inner surface and the turbine blade;a second axially extending seal arm extending axially from the rotor disc towards the rotor sealing plate having a radially outer surface positioned at an acute angle such that an axially outer end of the second axially extending seal arm is radially outward from an intersection between the radially outer surface and the turbine blade;wherein each of the first axially extending seal arm, the second axially extending seal arm and the rotor sealing plate form a portion of a seal cavity having a teardrop shaped cross-section; anda teardrop shaped seal filling at least a portion of the seal cavity and positioned in the seal cavity for metering cooling fluid flow through the cooling fluid channel and past the gap, wherein the teardrop shaped seal includes a first outer surface that bears against the radially inner surface of the first axially extending seal arm and a second outer surface that bears against the radially outer surface of the second axially extending seal arm, wherein the first and second outer surfaces are coupled together at a tip; andwherein the teardrop shaped seal is formed from a material configured to conform to the radially inner surface of the first axially extending arm and the radially outer surface of the second axially extending arm during operation as centrifugal forces force the teardrop shaped seal radially outward to seal the gap. 17. The turbine engine of claim 16, wherein the teardrop shaped seal includes at least one hole extending through the seal for metering the flow of cooling fluids therethrough. 18. The turbine engine of claim 16, wherein a radially outermost portion of the teardrop shaped cavity is located at the gap between the rotor sealing plate and the root of the at least one turbine blade. 19. The turbine engine of claim 16, wherein an outermost point of the first axially extending seal arm in an axial direction is generally aligned with an outermost point of the second axially extending seal arm in the axial direction. 20. The turbine engine of claim 16, wherein the rotor sealing plate includes a generally linear outer surface opposing the first and second axially extending arms.

인용문헌 (19)

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Wire seal for metering of turbine blade cooling fluids

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Wire seal for metering of turbine blade cooling fluids

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