초록 ▼

A rotary machine includes a rotor, a stationary machine casing extending around the rotor, and a bling assembly extending between the casing and the rotor. The machine also includes at least one rotor tip seal assembly and at least one shaft seal assembly. The seal assemblies have a groove configure

A rotary machine includes a rotor, a stationary machine casing extending around the rotor, and a bling assembly extending between the casing and the rotor. The machine also includes at least one rotor tip seal assembly and at least one shaft seal assembly. The seal assemblies have a groove configured to receive at least one seal ring band. A method of assembling a rotary machine is also provided. The method includes fabricating the bling assembly by providing two identical members comprising a mating surface and having a semi-circular profile. The method also includes coupling the two members together at their mating surfaces such that a circular ring is formed and such that the mating surfaces define a horizontal joint. The method further includes machining concentric, circular and annular radially inner and outer and airfoil portions within predetermined radial portions of the bling assembly. The method also includes forming at least one abradable layer over a plurality of seal ring bands and inserting the plurality of seal ring bands into the rotor tip and shaft seal ring grooves.

대표청구항 ▼

What is claimed is: 1. A method of assembling a rotary machine including a casing, said method comprising: providing at least two substantially identical members comprising a mating surface and having a substantially semi-circular cross-sectional profile; assembling a bling assembly by coupling the

What is claimed is: 1. A method of assembling a rotary machine including a casing, said method comprising: providing at least two substantially identical members comprising a mating surface and having a substantially semi-circular cross-sectional profile; assembling a bling assembly by coupling the at least two members together at their mating surfaces such that a substantially circular ring is formed and such that the mating surfaces define a substantially horizontal joint; machining substantially concentric, circular and annular radially inner and outer and airfoil portions within predetermined radial portions of the bling assembly; machining a seal ring carrier extension adjacent to the radially outer portion of the airfoil, wherein the seal ring carrier extension is formed integrally with the outer portion, and wherein the seal ring carrier extension includes a first seal ring groove that is at least partially defined by an axially downstream wall and by at least one seal band seating surface, said axially downstream wall at least partially defines a steam sealing surface; and inserting at least one seal ring band into the first seal ring groove and positioning a plurality of springs between the at least one seal ring band and at least a portion of the seal ring carrier extension. 2. A method of assembling a rotary machine in accordance with claim 1 wherein coupling the two substantially semi-circular members at the radially inner mating surfaces comprises coupling the two members using retention hardware. 3. A method of assembling a rotary machine in accordance with claim 1 wherein machining substantially concentric, circular and annular radially inner and outer and airfoil portions further comprises: machining a second seal ring groove within the radially inner portion, the second groove being at least partially defined by an axially downstream wall, at least a portion of the wall defining a steam sealing surface; and machining an axially downstream surface over the radially outer portion, at least a portion of the surface defining a steam sealing face. 4. A method of assembling a rotary machine in accordance with claim 1 further comprising: machining at least one seal ring groove in at least a portion of the radially inner portion; forming at least one abradable layer over a plurality of seal ring bands and inserting the plurality of seal ring bands into the seal ring grooves; and positioning the bling assembly in a gap formed by the casing and a rotor. 5. A method of assembling a rotary machine in accordance with claim 1 further comprising forming the seal carrier extension by machining the bling assembly radially outer portion. 6. A method of assembling a rotary machine in accordance with claim 1 further comprising assembling the uncoupled seal carrier extension and coupling the assembled extension to the bling assembly radially outer portion. 7. A method of assembling a rotary machine in accordance with claim 4 wherein forming at least one abradable layer comprises spraying an abradable material over at least a portion of the surface regions of the plurality of seal ring bands and abrading the layers to within predetermined tolerances. 8. A method of assembling a rotary machine in accordance with claim 4 wherein positioning the bling assembly in a gap formed by the casing and a rotor comprises fixedly coupling the bling assembly to the rotary machine casing at a conjunction of the bling horizontal joint and a casing horizontal joint. 9. A bling assembly for a steam turbine comprising: a first member comprising a mating surface and having a substantially semi-circular cross-sectional profile; and a second member comprising a mating surface and having a substantially semi-circular cross-sectional profile, said second member is identical to said first member and is coupled against said first member along said mating surfaces, each of said first member and said second member comprising a plurality of circumferentially spaced airfoils, each of said plurality of airfoils extends between a radially outer bling portion and a radially inner bling portion, said radially outer bling portion comprising a seal ring carrier extension, said seal ring carrier extension is formed integrally with said outer bling portion and comprises a first seal ring groove that is at least partially defined by an axially downstream wall and by at least one seal band seating surface, said axially downstream wall at least partially defines a steam sealing surface, wherein said seal ring carrier extension comprises at least one seal ring band within said first seal ring groove and a plurality of springs extending between said seal ring band and at least a portion of said seal ring carrier extension. 10. A bling assembly in accordance with claim 9 wherein said radially inner bling portion comprises at least one substantially annular seal ring groove defined therein, said groove being at least partially defined by a steam sealing face. 11. A bling assembly in accordance with claim 10 wherein said radially inner bling portion further comprises: a seal ring band positioned within said seal ring groove, wherein at least a portion of said seal ring band comprises at least one abradable layer; and a plurality of springs radially outward of said seal ring band and biased between said seal ring band and a portion of said radially inner bling portion. 12. A bling assembly in accordance with claim 9 wherein said seal ring carrier extension is substantially annular and extends downstream a distance from said plurality of airfoils, said at least one seal ring band comprising at least one abradable layer formed over at least a portion of said seal ring band. 13. A bling assembly in accordance with claim 9 wherein said radially outer bling portion comprises a downstream surface and an opposite upstream surface, at least a portion of said downstream surface defines a steam sealing face. 14. A bling assembly in accordance with claim 9 wherein said radially outer bling portion comprises at least one flange extending radially outward from said outer bling portion, said flange facilitates coupling said bling assembly within the steam turbine assembly. 15. A rotary machine comprising: at least one rotor; at least one stationary machine casing extending at least partly circumferentially around said at least one rotor; and a bling assembly extending between said casing and said rotor comprising a first member and a second member, said first member comprising a mating surface and having a substantially semi-circular cross-sectional profile, said second member comprising a mating surface and having a substantially semi-circular cross-sectional profile, said second member is identical to said first member and is coupled against said first member along said mating surfaces, each of said first member and said second member comprising a plurality of circumferentially spaced airfoils, each of said plurality of airfoils extends between a radially outer bling portion and a radially inner bling portion, said radially outer bling portion comprising a seal ring carrier extension, said seal ring carrier extension is formed integrally with said outer bling portion and comprises a first seal ring groove that is at least partially defined by an axially downstream wall and by at least one seal band seating surface, said axially downstream wall at least partially defines a steam sealing surface, said seal ring carrier extension comprises at least one seal ring band positioned within said first seal ring groove and a plurality of springs extending between said at least one seal ring band and at least a portion of said seal ring carrier extension. 16. A rotary machine in accordance with claim 15 said radially inner bling portion comprises at least one substantially annular seal ring groove defined therein, said groove being at least partially defined by a steam sealing face. 17. A rotary machine in accordance with claim 16 wherein said radially inner bling portion further comprises: a seal ring band positioned within said seal ring groove, wherein at least a portion of said seal ring band comprises at least one abradable layer; and a plurality of springs radially outward of said seal ring band and biased between said seal ring band and a portion of said radially inner bling portion. 18. A rotary machine in accordance with claim 15 wherein said seal ring carrier extension is substantially annular and extends downstream a distance from said plurality of airfoils, said at least one seal ring band comprising at least one abradable layer formed over at least a portion of said seal ring band. 19. A rotary machine in accordance with claim 15 wherein said radially outer bling portion comprises a downstream surface and an opposite upstream surface, at least a portion of said downstream surface defines a steam sealing face. 20. A rotary machine in accordance with claim 15 wherein said radially outer bling portion comprises at least one flange extending radially outward from said outer bling portion, said flange facilitates coupling said bling assembly within the rotary machine.