US20120128472A1 - Turbomachine nozzle segment having an integrated diaphragm - Google Patents
Turbomachine nozzle segment having an integrated diaphragm Download PDFInfo
- Publication number
- US20120128472A1 US20120128472A1 US12/952,922 US95292210A US2012128472A1 US 20120128472 A1 US20120128472 A1 US 20120128472A1 US 95292210 A US95292210 A US 95292210A US 2012128472 A1 US2012128472 A1 US 2012128472A1
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- Prior art keywords
- upstream
- nozzle
- turbomachine
- downstream
- cartridge
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Classifications
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/246—Fastening of diaphragms or stator-rings
Definitions
- the subject matter disclosed herein relates to the art of turbomachines and, more particularly, to a turbomachine nozzle segment having an integrated diaphragm.
- gas turbomachines combust a fuel/air mixture that releases heat energy to form a high temperature gas stream.
- the high temperature gas stream is channeled to a turbine section via a hot gas path.
- the high temperature gas stream passes through a plurality of stages.
- Each stage includes a plurality of nozzles arranged upstream from a plurality of turbine blades.
- the high temperature gas stream passes over the nozzles, then acts upon or rotates the turbine blades.
- the plurality of nozzles are mounted to a housing of the turbine section and a diaphragm is mounted to each of the plurality of nozzles.
- a discourager seal is provided at an interface between each of the plurality of nozzles and the associated diaphragm.
- the discourager seals on each of the plurality of nozzles interact one with the other to reduce loss of the high temperature gases or working fluid from the corresponding one of the plurality of stages of the turbine section.
- the turbine blades convert thermal energy from the high temperature gas stream to mechanical energy that rotates a turbine shaft.
- the turbine may be used in a variety of applications such as providing power to a pump or an electrical generator.
- a turbomachine nozzle segment includes a vane having a first end extending to a second end through an airfoil portion.
- An outer member is positioned at the first end of the vane.
- the outer member includes a mounting element configured and disposed to secure the turbomachine nozzle segment to a turbomachine.
- An inner member is positioned at the second end of the vane.
- the inner member includes an upstream section and a downstream section.
- An upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section.
- Each of the upstream diaphragm member and down stream member includes an outer surface and an inner surface.
- One of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member includes a cartridge mounting member.
- a turbomachine nozzle cartridge includes a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end.
- the nozzle cartridge is configured and disposed to be mounted between an upstream diaphragm member and a downstream diaphragm member of a turbomachine nozzle.
- a turbomachine includes a compressor section, a turbine section operatively connected to the compressor section, and a turbine nozzle positioned within the turbine section.
- the turbine nozzle includes a vane having a first end extending to a second end through an airfoil portion.
- An outer member is positioned at the first end of the vane.
- the outer member includes a mounting element configured and disposed to secure the turbomachine nozzle to a turbomachine.
- An inner member is positioned at the second end of the vane.
- the inner member includes an upstream section and a downstream section.
- An upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section.
- Each of the upstream diaphragm member and down stream member includes an outer surface and an inner surface.
- One of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member includes a cartridge mounting member.
- a cooling passage extends from the outer member through the airfoil portion to the inner member.
- a nozzle cartridge includes a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end. The nozzle cartridge is mounted between the upstream diaphragm member and the downstream diaphragm member of a turbomachine nozzle.
- FIG. 1 is a partial cross-sectional side view of a turbine section of a turbomachine including a plurality of turbine nozzles having an integrated diaphragm members in accordance with an exemplary embodiment
- FIG. 2 is a perspective view of a nozzle segment including integrated upstream and downstream diaphragm members of the turbine section of FIG. 1 ;
- FIG. 3 is a perspective view of an inner member of the nozzle segment of FIG. 2 ;
- FIG. 4 is a perspective view of the nozzle segment of FIG. 2 including a nozzle cartridge in accordance with an exemplary embodiment
- FIG. 5 is a perspective view of an inner member of a nozzle segment joined to a nozzle cartridge in accordance with another exemplary embodiment.
- Turbomachine 2 includes a turbine section 3 having a housing 4 that defines, at least in part, a hot gas path 10 .
- Turbine section 3 includes a first stage 12 , having a plurality of first stage vanes or nozzles 14 , and blades 16 ; a second stage 17 having a plurality of second stage vanes or nozzles 18 and blades 20 ; and a third stage 21 having a plurality of third stage vanes or nozzles 22 and blades 24 .
- turbine section 3 could also include additional stages (not shown).
- Hot combustion gases flow axially along hot gas path 10 through nozzles 14 , 18 , and 22 , impact and rotate blades 16 , 20 , and 24 .
- a cooling airflow is guided into turbine section 3 in order to mitigate thermal fluxes that develop between portions of nozzles 14 , 18 , and 22 .
- Nozzle segment 30 includes a plurality of second stage nozzles or airfoils 18 , 18 a , and 18 b . As each airfoil 18 , 18 a , and 18 b is similarly formed, a detailed description will follow referencing airfoil 18 with an understanding that airfoil 18 a and 18 b include similar structure.
- Airfoil 18 includes a first end 34 that extends to a second end 35 through an intermediate or airfoil portion 36 .
- Nozzle segment 30 includes an outer member 40 integrally formed with airfoils 18 , 18 a , and 18 b at first end 34 .
- Outer member 40 supports nozzle segment 30 from a casing portion (not separately labeled) of turbomachine 2 and includes a main body 42 having a first circumferential edge 46 and an opposing second circumferential edge 47 .
- First and second circumferential edges 46 and 47 establish a circumferential profile 50 for outer member 40 .
- circumferential profile 50 is about 22.5° of an overall circumference of second stage 17 .
- Each circumferential edge 46 and 47 includes a corresponding angled or dogleg section 48 and 49 .
- Nozzle segment 30 also includes an inner member 60 integrally formed at second end 35 of airfoils 18 , 18 a , and 18 b .
- Inner member 60 includes a main body 64 having an upstream section 67 and a downstream section 69 .
- Main body 64 also includes a first circumferential edge 72 and a second, opposing, circumferential edge 73 that establish a circumferential profile 75 for inner member 60 .
- circumferential profile 75 is about 22.5° of an overall circumference of second stage 17 .
- Each circumferential edge 72 and 73 includes a corresponding angled or dogleg section 79 and 80 .
- Each circumferential edge 72 and 73 is also provided with a seal slot or groove 81 and 82 respectively.
- inner refers to a portion of nozzle segment 30 that is positioned near a centerline of turbomachine 2 .
- outer refers to a portion of nozzle segment 30 that is positioned away from the centerline in a direction of a casing of turbomachines 2 .
- inner member 60 includes an upstream diaphragm member 84 and a downstream diaphragm member 86 .
- Upstream diaphragm member 84 is integrally formed with inner member 60 and extends generally radially outwardly from upstream section 67 between first and second circumferential edges 72 and 73 .
- downstream diaphragm member 86 is integrally formed with inner member 60 and extends generally radially outwardly from downstream section 69 between first and second circumferential edges 72 and 73 .
- Upstream diaphragm member 84 includes a first end 90 that extends from upstream section 67 to a second end 91 .
- Second end 91 includes a generally curvilinear circumferential profile (not separately labeled).
- Upstream diaphragm member 84 also includes an outer surface 93 and an inner surface 94 ( FIG. 3 ) that extend between first and second ends 90 and 91 .
- a first seal groove element 95 is formed in upstream diaphragm member 84 at circumferential edge 73 .
- First seal groove element joins with seal groove 82 .
- a second seal groove element 96 is formed in upstream diaphragm member 84 at circumferential edge 72 .
- Second seal groove element 96 is linked with seal groove 81 .
- downstream diaphragm member 86 includes a first end 97 that extends from downstream section 69 to a second end 98 .
- Second end 98 includes a generally curvilinear circumferential profile (not separately labeled).
- Downstream diaphragm member 86 also includes an outer surface 100 and an inner surface 101 that extend between first and second ends 97 and 98 .
- a first seal groove member 102 is formed in downstream diaphragm member 86 at circumferential edge 73 .
- First seal groove member 102 joins with seal groove 82 .
- a second seal groove member 103 is formed in downstream diaphragm member 86 at circumferential edge 72 .
- Second seal groove member 103 is linked with seal groove 81 .
- Upstream diaphragm member 84 and downstream diaphragm member 86 are also shown to include discourager seals 104 and 105 provided on outer surfaces 93 and 100 respectively.
- Discourager seals 104 and 105 can either be integrally formed on corresponding ones of outer surfaces 93 and 100 or may be mounted in grooves or other structure (not shown) provided on corresponding ones of outer surfaces 93 and 100 .
- upstream diaphragm member 84 and downstream diaphragm member 86 are also shown to include cartridge mounting members 110 and 112 provided on corresponding ones of inner surfaces 94 and 101 . As will be discussed more fully below, cartridge mounting members 110 and 112 provide an interface for additional sealing structure for nozzle segment 30 .
- Nozzle segment 30 is also shown to include a plurality of passages 118 - 120 that deliver cooling fluid flow, in the form of compressor discharge air, through airfoils 18 , 18 a , and 18 b respectively. Passages 118 - 120 lead though airfoils 18 , 18 a , and 18 b into a region 121 that extends between upstream diaphragm member 84 and downstream diaphragm member 86 . Region 121 receives extraction air through a plurality of cooling passages 118 - 120 that extend through airfoils 18 , 18 a , and 18 b , and is pushed out through openings 122 - 124 that are formed in upstream diaphragm member 84 .
- nozzle segment 30 includes a nozzle cartridge 136 ( FIG. 4 ) that is detachably mounted to inner member 60 .
- Nozzle cartridge 136 provides a seal that limits leakage flow from passing between nozzle segment 30 and a wheel space (not separately labeled) of turbine section 3 .
- Nozzle cartridge 136 includes a main body 139 having a substantially linear cross-section and a substantially curvilinear circumferential profile. In a manner similar to that described above, in the exemplary embodiment shown, the circumferential profile is about 22.5° of an overall circumference of second stage 17 .
- Nozzle cartridge 136 is shown to include a main body 139 having an upstream end 141 and a downstream end 142 .
- Main body 139 also includes an outer surface 144 , an inner surface 145 , a first side portion 146 and a second side portion (not shown).
- Side portion 146 includes an angled or dogleg portion 147 on side portion corresponds to dogleg sections 80 on inner member 60 .
- the second side portion (not shown) includes a similar angled or dogleg portion (also not shown).
- Side portion 146 is also shown to include a seal groove portion 148 that links with first seal groove element 95 and first seal groove member 102 to form a seal zone (not separately labeled) that prevents leakage flow from passing between adjacent nozzle cartridges.
- nozzle cartridge 136 defines a region 148 in inner member 60 .
- region 148 is an encapsulated region defined/bounded by upstream diaphragm member 84 , downstream diaphragm member 86 and nozzle cartridge 136 .
- Region 148 channels extraction air passing through airfoils 18 , 18 a , and 18 b to provide cooling to the wheel space.
- Nozzle cartridge 136 includes a plurality of projections, one of which is indicated at 150 that define a labyrinth seal which limits leakage flow across stages 17 , and 21 .
- Nozzle cartridge 136 is further shown to include first cartridge mounting element 152 provided on upstream end 141 and a second cartridge mounting element 154 provided on downstream end 142 .
- First and second cartridge mounting elements 152 and 154 engage with first and second cartridge mounting members 110 and 112 on inner member 60 to secure nozzle cartridge 136 to nozzle segment 30
- Nozzle segment 180 includes a plurality of airfoils, one of which is indicated at 183 that extend between an outer member (not shown) and an inner member 190 .
- Inner member 190 includes a main body 193 having an upstream section 195 and a downstream section 196 .
- Main body 193 also includes a first circumferential edge (not shown) that extends to a second circumferential edge 198 to define a circumferential profile 200 .
- circumferential profile 200 is about 22.5° of an overall circumference of second stage 12 .
- circumferential edge 198 includes an angled or dogleg section 202 .
- An upstream diaphragm member 205 is integrally formed with inner member 190 and extends generally radially outwardly from upstream section 195 .
- a downstream diaphragm member 207 is also integrally formed with inner member 190 and extends generally radially outwardly from downstream section.
- Upstream diaphragm member 205 includes a first end 211 that extends from upstream section 195 to a second end 212 .
- Second end 212 includes a generally curvilinear circumferential profile (not shown).
- Upstream diaphragm member 205 also includes an outer surface 214 and an inner surface 215 that extend between first and second ends 211 and 212 .
- downstream diaphragm member 207 includes a first end 219 that extends from downstream section 196 to a second end 220 .
- Second end 220 includes a generally curvilinear circumferential profile (not shown).
- Downstream diaphragm member 207 also includes an outer surface 222 and an inner surface 223 that extend between first and second ends 219 and 220 .
- a first discourager seal 225 is provided on outer surface 214 of upstream diaphragm member 205 and a second discourager seal 226 is provided on outer surface 222 of downstream diaphragm member 207 .
- Inner member 190 is also shown to include a first cartridge mounting member 228 that is provided on outer surface 214 of upstream diaphragm member 205 and a second cartridge mounting member 230 provided on outer surface 222 of downstream diaphragm member 207 .
- a nozzle cartridge 240 is mounted to inner member 190 .
- Nozzle cartridge 240 includes a main body 243 having an upstream end 245 and a downstream end 246 that are separated by an outer surface 248 and an inner surface 249 .
- Cartridge 240 also includes a first side portion 250 and a second side portion (not shown). Each of the first and second side portions includes an angled or dogleg section, one of which is shown at 251 on side portion 250 that corresponds to dogleg section 202 on inner member 190 .
- a first mounting flange 252 extends from upstream end 245 and a second mounting flange 253 extends from downstream end 246 .
- Each mounting flange 252 , 253 includes a corresponding cartridge mounting element 255 and 257 .
- Cartridge mounting elements 255 and 257 cooperate with cartridge mounting members 228 and 230 on inner member 190 .
- mounting flanges 252 and 253 wrap around outer surfaces 214 and 222 of upstream diaphragm member 205 and downstream diaphragm member 207 respectively.
- nozzle cartridge 240 forms a cavity 260 in inner member 190 .
- the exemplary embodiments provide a nozzle segment having an integrated diaphragm that reduces leakage points and simplifies construction by reducing or even eliminating numerous welded joints.
- the particular construction of the nozzle segment eliminates load sharing with adjacent nozzle segments.
- the integrated diaphragm eliminates numerous diaphragm machining operations saving time/labor/costs associated with forming and installing nozzles in a turbomachine.
- the exemplary embodiments are further shown to reduce both known and unknown leakages thereby enhancing turbomachine efficiency.
- the particular nozzle segment shown is exemplary, the number of vanes as well as the materials used may vary.
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A turbomachine nozzle segment includes a vane having a first end extending to a second end through an airfoil portion. An outer member is positioned at the first end of the vane. The outer member includes a mounting element configured and disposed to secure the turbomachine nozzle segment to a turbomachine. An inner member is positioned at the second end of the vane. The inner member includes an upstream section and a downstream section. An upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section. Each of the upstream diaphragm member and down stream member includes an outer surface and an inner surface. One of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member includes a cartridge mounting member.
Description
- The subject matter disclosed herein relates to the art of turbomachines and, more particularly, to a turbomachine nozzle segment having an integrated diaphragm.
- In general, gas turbomachines combust a fuel/air mixture that releases heat energy to form a high temperature gas stream. The high temperature gas stream is channeled to a turbine section via a hot gas path. In the turbine, the high temperature gas stream passes through a plurality of stages. Each stage includes a plurality of nozzles arranged upstream from a plurality of turbine blades. The high temperature gas stream passes over the nozzles, then acts upon or rotates the turbine blades. The plurality of nozzles are mounted to a housing of the turbine section and a diaphragm is mounted to each of the plurality of nozzles. A discourager seal is provided at an interface between each of the plurality of nozzles and the associated diaphragm. The discourager seals on each of the plurality of nozzles interact one with the other to reduce loss of the high temperature gases or working fluid from the corresponding one of the plurality of stages of the turbine section. The turbine blades convert thermal energy from the high temperature gas stream to mechanical energy that rotates a turbine shaft. The turbine may be used in a variety of applications such as providing power to a pump or an electrical generator.
- According to one aspect of the invention, a turbomachine nozzle segment includes a vane having a first end extending to a second end through an airfoil portion. An outer member is positioned at the first end of the vane. The outer member includes a mounting element configured and disposed to secure the turbomachine nozzle segment to a turbomachine. An inner member is positioned at the second end of the vane. The inner member includes an upstream section and a downstream section. An upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section. Each of the upstream diaphragm member and down stream member includes an outer surface and an inner surface. One of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member includes a cartridge mounting member.
- According to another aspect of the invention, a turbomachine nozzle cartridge includes a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end. The nozzle cartridge is configured and disposed to be mounted between an upstream diaphragm member and a downstream diaphragm member of a turbomachine nozzle.
- According to yet another aspect of the invention, a turbomachine includes a compressor section, a turbine section operatively connected to the compressor section, and a turbine nozzle positioned within the turbine section. The turbine nozzle includes a vane having a first end extending to a second end through an airfoil portion. An outer member is positioned at the first end of the vane. The outer member includes a mounting element configured and disposed to secure the turbomachine nozzle to a turbomachine. An inner member is positioned at the second end of the vane. The inner member includes an upstream section and a downstream section. An upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section. Each of the upstream diaphragm member and down stream member includes an outer surface and an inner surface. One of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member includes a cartridge mounting member. A cooling passage extends from the outer member through the airfoil portion to the inner member. A nozzle cartridge includes a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end. The nozzle cartridge is mounted between the upstream diaphragm member and the downstream diaphragm member of a turbomachine nozzle.
- These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
- The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
-
FIG. 1 is a partial cross-sectional side view of a turbine section of a turbomachine including a plurality of turbine nozzles having an integrated diaphragm members in accordance with an exemplary embodiment; -
FIG. 2 is a perspective view of a nozzle segment including integrated upstream and downstream diaphragm members of the turbine section ofFIG. 1 ; -
FIG. 3 is a perspective view of an inner member of the nozzle segment ofFIG. 2 ; -
FIG. 4 is a perspective view of the nozzle segment ofFIG. 2 including a nozzle cartridge in accordance with an exemplary embodiment; and -
FIG. 5 is a perspective view of an inner member of a nozzle segment joined to a nozzle cartridge in accordance with another exemplary embodiment. - The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.
- Referring to
FIG. 1 , a turbomachine, in accordance with an exemplary embodiment, is indicated generally at 2. Turbomachine 2 includes aturbine section 3 having ahousing 4 that defines, at least in part, ahot gas path 10.Turbine section 3 includes afirst stage 12, having a plurality of first stage vanes ornozzles 14, andblades 16; a second stage 17 having a plurality of second stage vanes ornozzles 18 andblades 20; and athird stage 21 having a plurality of third stage vanes ornozzles 22 andblades 24. Of course it should be understood thatturbine section 3 could also include additional stages (not shown). Hot combustion gases flow axially alonghot gas path 10 throughnozzles blades turbine section 3 in order to mitigate thermal fluxes that develop between portions ofnozzles - Reference will now be made to
FIGS. 2-4 in describing anozzle segment 30 of second stage 17 in accordance with an exemplary embodiment.Nozzle segment 30 includes a plurality of second stage nozzles orairfoils airfoil airfoil 18 with an understanding thatairfoil first end 34 that extends to asecond end 35 through an intermediate orairfoil portion 36.Nozzle segment 30 includes anouter member 40 integrally formed withairfoils first end 34.Outer member 40 supportsnozzle segment 30 from a casing portion (not separately labeled) of turbomachine 2 and includes amain body 42 having a firstcircumferential edge 46 and an opposing secondcircumferential edge 47. First and secondcircumferential edges circumferential profile 50 forouter member 40. In the exemplary embodiment shown,circumferential profile 50 is about 22.5° of an overall circumference of second stage 17. Eachcircumferential edge dogleg section -
Nozzle segment 30 also includes aninner member 60 integrally formed atsecond end 35 ofairfoils Inner member 60 includes amain body 64 having anupstream section 67 and adownstream section 69.Main body 64 also includes a firstcircumferential edge 72 and a second, opposing,circumferential edge 73 that establish acircumferential profile 75 forinner member 60. In a manner similar to that described above, in the exemplary embodiment shown,circumferential profile 75 is about 22.5° of an overall circumference of second stage 17. Eachcircumferential edge dogleg section circumferential edge groove nozzle segment 30 that is positioned near a centerline of turbomachine 2. The term “outer” refers to a portion ofnozzle segment 30 that is positioned away from the centerline in a direction of a casing of turbomachines 2. - In accordance with the exemplary embodiment,
inner member 60 includes anupstream diaphragm member 84 and adownstream diaphragm member 86.Upstream diaphragm member 84 is integrally formed withinner member 60 and extends generally radially outwardly fromupstream section 67 between first and secondcircumferential edges downstream diaphragm member 86 is integrally formed withinner member 60 and extends generally radially outwardly fromdownstream section 69 between first and secondcircumferential edges Upstream diaphragm member 84 includes afirst end 90 that extends fromupstream section 67 to asecond end 91.Second end 91 includes a generally curvilinear circumferential profile (not separately labeled).Upstream diaphragm member 84 also includes anouter surface 93 and an inner surface 94 (FIG. 3 ) that extend between first and second ends 90 and 91. A firstseal groove element 95 is formed inupstream diaphragm member 84 atcircumferential edge 73. First seal groove element joins withseal groove 82. A secondseal groove element 96 is formed inupstream diaphragm member 84 atcircumferential edge 72. Secondseal groove element 96 is linked withseal groove 81. Similarly,downstream diaphragm member 86 includes afirst end 97 that extends fromdownstream section 69 to asecond end 98.Second end 98 includes a generally curvilinear circumferential profile (not separately labeled).Downstream diaphragm member 86 also includes anouter surface 100 and aninner surface 101 that extend between first and second ends 97 and 98. A firstseal groove member 102 is formed indownstream diaphragm member 86 atcircumferential edge 73. Firstseal groove member 102 joins withseal groove 82. A secondseal groove member 103 is formed indownstream diaphragm member 86 atcircumferential edge 72. Secondseal groove member 103 is linked withseal groove 81. -
Upstream diaphragm member 84 anddownstream diaphragm member 86 are also shown to include discourager seals 104 and 105 provided onouter surfaces outer surfaces outer surfaces upstream diaphragm member 84 anddownstream diaphragm member 86 are also shown to includecartridge mounting members inner surfaces cartridge mounting members nozzle segment 30.Nozzle segment 30 is also shown to include a plurality of passages 118-120 that deliver cooling fluid flow, in the form of compressor discharge air, throughairfoils airfoils region 121 that extends betweenupstream diaphragm member 84 anddownstream diaphragm member 86.Region 121 receives extraction air through a plurality of cooling passages 118-120 that extend throughairfoils upstream diaphragm member 84. At this point it should be understood that various other cooling scheme, including the use of cooling tubes or conduits that extend fromupstream diaphragm member 84, throughairfoils - In further accordance with the exemplary embodiment,
nozzle segment 30 includes a nozzle cartridge 136 (FIG. 4 ) that is detachably mounted toinner member 60.Nozzle cartridge 136 provides a seal that limits leakage flow from passing betweennozzle segment 30 and a wheel space (not separately labeled) ofturbine section 3.Nozzle cartridge 136 includes amain body 139 having a substantially linear cross-section and a substantially curvilinear circumferential profile. In a manner similar to that described above, in the exemplary embodiment shown, the circumferential profile is about 22.5° of an overall circumference of second stage 17.Nozzle cartridge 136 is shown to include amain body 139 having anupstream end 141 and adownstream end 142.Main body 139 also includes anouter surface 144, aninner surface 145, afirst side portion 146 and a second side portion (not shown).Side portion 146 includes an angled ordogleg portion 147 on side portion corresponds to doglegsections 80 oninner member 60. The second side portion (not shown) includes a similar angled or dogleg portion (also not shown).Side portion 146 is also shown to include aseal groove portion 148 that links with firstseal groove element 95 and firstseal groove member 102 to form a seal zone (not separately labeled) that prevents leakage flow from passing between adjacent nozzle cartridges. - As best shown in
FIG. 4 ,nozzle cartridge 136 defines aregion 148 ininner member 60. In a manner similar to that described above,region 148 is an encapsulated region defined/bounded byupstream diaphragm member 84,downstream diaphragm member 86 andnozzle cartridge 136.Region 148 channels extraction air passing throughairfoils Nozzle cartridge 136 includes a plurality of projections, one of which is indicated at 150 that define a labyrinth seal which limits leakage flow acrossstages 17, and 21.Nozzle cartridge 136 is further shown to include firstcartridge mounting element 152 provided onupstream end 141 and a secondcartridge mounting element 154 provided ondownstream end 142. First and secondcartridge mounting elements cartridge mounting members inner member 60 to securenozzle cartridge 136 tonozzle segment 30 - Reference will now be made to
FIG. 5 in describing anozzle segment 180 in accordance with another aspect of the exemplary embodiment.Nozzle segment 180 includes a plurality of airfoils, one of which is indicated at 183 that extend between an outer member (not shown) and aninner member 190.Inner member 190 includes a main body 193 having anupstream section 195 and adownstream section 196. Main body 193 also includes a first circumferential edge (not shown) that extends to a secondcircumferential edge 198 to define acircumferential profile 200. In a manner similar to that described above, in the exemplary embodiment shown,circumferential profile 200 is about 22.5° of an overall circumference ofsecond stage 12. In a manner also similar to that described abovecircumferential edge 198 includes an angled ordogleg section 202. - An
upstream diaphragm member 205 is integrally formed withinner member 190 and extends generally radially outwardly fromupstream section 195. Similarly, adownstream diaphragm member 207 is also integrally formed withinner member 190 and extends generally radially outwardly from downstream section.Upstream diaphragm member 205 includes afirst end 211 that extends fromupstream section 195 to asecond end 212.Second end 212 includes a generally curvilinear circumferential profile (not shown).Upstream diaphragm member 205 also includes anouter surface 214 and aninner surface 215 that extend between first and second ends 211 and 212. Similarly,downstream diaphragm member 207 includes afirst end 219 that extends fromdownstream section 196 to asecond end 220.Second end 220 includes a generally curvilinear circumferential profile (not shown).Downstream diaphragm member 207 also includes anouter surface 222 and aninner surface 223 that extend between first and second ends 219 and 220. Afirst discourager seal 225 is provided onouter surface 214 ofupstream diaphragm member 205 and asecond discourager seal 226 is provided onouter surface 222 ofdownstream diaphragm member 207.Inner member 190 is also shown to include a firstcartridge mounting member 228 that is provided onouter surface 214 ofupstream diaphragm member 205 and a secondcartridge mounting member 230 provided onouter surface 222 ofdownstream diaphragm member 207. - In further accordance with the exemplary aspect depicted in
FIG. 5 , anozzle cartridge 240 is mounted toinner member 190.Nozzle cartridge 240 includes amain body 243 having anupstream end 245 and adownstream end 246 that are separated by anouter surface 248 and aninner surface 249.Cartridge 240 also includes afirst side portion 250 and a second side portion (not shown). Each of the first and second side portions includes an angled or dogleg section, one of which is shown at 251 onside portion 250 that corresponds to doglegsection 202 oninner member 190. A first mountingflange 252 extends fromupstream end 245 and asecond mounting flange 253 extends fromdownstream end 246. Each mountingflange cartridge mounting element Cartridge mounting elements cartridge mounting members inner member 190. With this arrangement, mountingflanges outer surfaces upstream diaphragm member 205 anddownstream diaphragm member 207 respectively. Once in place,nozzle cartridge 240 forms acavity 260 ininner member 190. - At this point it should be appreciated that the exemplary embodiments provide a nozzle segment having an integrated diaphragm that reduces leakage points and simplifies construction by reducing or even eliminating numerous welded joints. In addition the particular construction of the nozzle segment eliminates load sharing with adjacent nozzle segments. The integrated diaphragm eliminates numerous diaphragm machining operations saving time/labor/costs associated with forming and installing nozzles in a turbomachine. The exemplary embodiments are further shown to reduce both known and unknown leakages thereby enhancing turbomachine efficiency. Finally, it should be understood that the particular nozzle segment shown is exemplary, the number of vanes as well as the materials used may vary.
- While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (20)
1. A turbomachine nozzle segment comprising:
a vane including a first end extending to a second end through an airfoil portion;
an outer member positioned at the first end of the vane, the outer member including a mounting element configured and disposed to secure the turbomachine nozzle segment to a turbomachine; and
an inner member positioned at the second end of the vane, the inner member including an upstream section and a downstream section, an upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section, each of the upstream diaphragm member and down stream member including an outer surface and an inner surface, one of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member including a cartridge mounting member.
2. The turbomachine nozzle according to claim 1 , wherein the cartridge mounting member is formed on the inner surface of each of the upstream and downstream diaphragm members.
3. The turbomachine nozzle according to claim 1 , further comprising: a nozzle cartridge positioned between the upstream and downstream diaphragm members and coupled to the cartridge mounting member, the nozzle cartridge including a main body extending between an upstream end and a downstream end, the nozzle cartridge forming a region defined by the inner member, and the upstream and downstream diaphragm members.
4. The turbomachine nozzle according to claim 3 , wherein the nozzle cartridge includes at least one side portion having a dogleg section.
5. The turbomachine nozzle according to claim 4 , wherein the inner surface of the nozzle cartridge includes a cartridge mounting element, the cartridge mounting element being configured and disposed to engage with the cartridge mounting member on corresponding ones of the upstream and downstream diaphragm members.
6. The turbomachine nozzle according to claim 3 , wherein the main body of the nozzle cartridge includes a substantially linear cross-section extending between the upstream end and the downstream end.
7. The turbomachine nozzle according to claim 3 , wherein the main body of the nozzle cartridge includes a generally curvilinear circumferential profile.
8. The turbomachine nozzle according to claim 3 , wherein the upstream diaphragm member includes a seal groove element, the downstream diaphragm member includes a seal groove member, and the nozzle cartridge includes seal groove portion, the seal groove portion linking with the seal groove member and seal groove element.
9. The turbomachine nozzle according to claim 1 , further comprising: a discourager seal provided on the outer surface of each of the upstream and downstream diaphragm members.
10. The turbomachine nozzle according to claim 1 , wherein the inner member includes a curvilinear circumferential profile, the curvilinear circumferential profile comprising about 22.5° of an overall circumferential circumference of a turbomachine nozzle assembly.
11. The turbomachine nozzle according to claim 1 , wherein the inner member includes a dogleg section.
12. A turbomachine nozzle cartridge comprising:
a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end, the nozzle cartridge being configured and disposed to be mounted between an upstream diaphragm member and a downstream diaphragm member of a turbomachine nozzle.
13. The turbomachine nozzle cartridge according to claim 12 , wherein the inner surface of the nozzle cartridge includes a cartridge mounting element, the cartridge mounting element being configured and disposed to engage with a cartridge mounting member on corresponding ones of upstream and downstream diaphragm members of a turbomachine nozzle.
14. The turbomachine nozzle cartridge according to claim 12 , wherein the nozzle cartridge includes at least one side portion having a dogleg section.
15. The turbomachine nozzle cartridge according to claim 14 , further comprising: a seal grove portion formed in the at least one side portion.
16. The turbomachine nozzle cartridge according to claim 12 , further comprising: a first mounting flange arranged at the upstream end and a second mounting flange arranged at the downstream end, each of the first and second mounting flanges extending substantially radially outwardly from the main body.
17. The turbomachine nozzle cartridge according to claim 12 , wherein the main body of the nozzle cartridge includes a substantially linear cross-section extending between the upstream end and the downstream end.
18. The turbomachine nozzle cartridge according to claim 12 , wherein the main body of the nozzle cartridge includes a generally curvilinear circumferential profile.
19. The turbomachine nozzle cartridge according to claim 17 , wherein the generally curvilinear circumferential profile comprising about 22.5° of an overall circumferential circumference of a turbomachine nozzle assembly.
20. A turbomachine comprising:
a compressor section;
a turbine section operatively connected to the compressor section; and
a turbine nozzle positioned within the turbine section, the turbine nozzle including:
a vane including a first end extending to a second end through an airfoil portion;
an outer member positioned at the first end of the vane, the outer member including a mounting element configured and disposed to secure the turbomachine nozzle to a turbomachine;
an inner member positioned at the second end of the vane, the inner member including an upstream section and a downstream section, an upstream diaphragm member extends substantially radially outwardly from the inner member at the upstream section, and a downstream diaphragm member extends substantially radially outwardly from the inner member at the downstream section, each of the upstream diaphragm member and down stream member including an outer surface and an inner surface, one of the outer surface and inner surface of each of the upstream diaphragm member and downstream diaphragm member including a cartridge mounting member;
a cooling passage extending from the outer member through the airfoil portion to the inner member; and
a nozzle cartridge including a main body having an outer surface and an inner surface that extend between an upstream end and a downstream end, the nozzle cartridge is mounted between the upstream diaphragm member and the downstream diaphragm member of a turbomachine nozzle.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/952,922 US20120128472A1 (en) | 2010-11-23 | 2010-11-23 | Turbomachine nozzle segment having an integrated diaphragm |
JP2011250221A JP2012112379A (en) | 2010-11-23 | 2011-11-16 | Turbomachine nozzle segment having integrated diaphragm |
DE102011055617A DE102011055617A1 (en) | 2010-11-23 | 2011-11-22 | Manifold segment of a turbomachine with integrated vane ring |
CN2011103932057A CN102536336A (en) | 2010-11-23 | 2011-11-23 | Turbomachine nozzle segment having integrated diaphragm |
FR1160707A FR2967716A1 (en) | 2010-11-23 | 2011-11-23 | TURBOMACHINE DISPENSER SEGMENT HAVING AN INTEGRATED DIAPHRAGM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/952,922 US20120128472A1 (en) | 2010-11-23 | 2010-11-23 | Turbomachine nozzle segment having an integrated diaphragm |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120128472A1 true US20120128472A1 (en) | 2012-05-24 |
Family
ID=46026211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/952,922 Abandoned US20120128472A1 (en) | 2010-11-23 | 2010-11-23 | Turbomachine nozzle segment having an integrated diaphragm |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120128472A1 (en) |
JP (1) | JP2012112379A (en) |
CN (1) | CN102536336A (en) |
DE (1) | DE102011055617A1 (en) |
FR (1) | FR2967716A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2787178A1 (en) * | 2013-04-03 | 2014-10-08 | MTU Aero Engines GmbH | Guide vane assembly |
US20140363284A1 (en) * | 2013-06-06 | 2014-12-11 | MTU Aero Engines AG | Stator vane segment of a fluid flow machine and turbine |
EP2971571A4 (en) * | 2013-03-13 | 2016-11-16 | United Technologies Corp | Stator segment |
US20190120073A1 (en) * | 2017-10-23 | 2019-04-25 | Doosan Heavy Industries & Construction Co., Ltd. | Sealing assembly and gas turbine including the same |
FR3085416A1 (en) * | 2018-08-29 | 2020-03-06 | Safran Aircraft Engines | OUTPUT DIRECTIVE BLADE RECOMPOSING A PLATFORM AND A CRANKCASE INTERMEDIATE |
US10927688B2 (en) | 2015-06-29 | 2021-02-23 | General Electric Company | Steam turbine nozzle segment for partial arc application, related assembly and steam turbine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018106539A1 (en) * | 2016-12-05 | 2018-06-14 | Cummins Filtration Ip, Inc. | Separation assembly with a single-piece impulse turbine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519366A (en) * | 1968-05-22 | 1970-07-07 | Westinghouse Electric Corp | Turbine diaphragm seal structure |
US5653581A (en) * | 1994-11-29 | 1997-08-05 | United Technologies Corporation | Case-tied joint for compressor stators |
US7201559B2 (en) * | 2004-05-04 | 2007-04-10 | Snecma | Stationary ring assembly for a gas turbine |
US20080170939A1 (en) * | 2007-01-12 | 2008-07-17 | Bryan Roy Palmer | Diaphragm for Turbomachines and Method of Manufacture |
US20100054932A1 (en) * | 2008-09-03 | 2010-03-04 | Siemens Power Generation, Inc. | Circumferential Shroud Inserts for a Gas Turbine Vane Platform |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7306424B2 (en) * | 2004-12-29 | 2007-12-11 | United Technologies Corporation | Blade outer seal with micro axial flow cooling system |
GB0700633D0 (en) * | 2007-01-12 | 2007-02-21 | Alstom Technology Ltd | Turbomachine |
FR2923525B1 (en) * | 2007-11-13 | 2009-12-18 | Snecma | SEALING A ROTOR RING IN A TURBINE FLOOR |
US20100284800A1 (en) * | 2009-05-11 | 2010-11-11 | General Electric Company | Turbine nozzle with sidewall cooling plenum |
-
2010
- 2010-11-23 US US12/952,922 patent/US20120128472A1/en not_active Abandoned
-
2011
- 2011-11-16 JP JP2011250221A patent/JP2012112379A/en active Pending
- 2011-11-22 DE DE102011055617A patent/DE102011055617A1/en not_active Withdrawn
- 2011-11-23 CN CN2011103932057A patent/CN102536336A/en active Pending
- 2011-11-23 FR FR1160707A patent/FR2967716A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519366A (en) * | 1968-05-22 | 1970-07-07 | Westinghouse Electric Corp | Turbine diaphragm seal structure |
US5653581A (en) * | 1994-11-29 | 1997-08-05 | United Technologies Corporation | Case-tied joint for compressor stators |
US7201559B2 (en) * | 2004-05-04 | 2007-04-10 | Snecma | Stationary ring assembly for a gas turbine |
US20080170939A1 (en) * | 2007-01-12 | 2008-07-17 | Bryan Roy Palmer | Diaphragm for Turbomachines and Method of Manufacture |
US20100054932A1 (en) * | 2008-09-03 | 2010-03-04 | Siemens Power Generation, Inc. | Circumferential Shroud Inserts for a Gas Turbine Vane Platform |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2971571A4 (en) * | 2013-03-13 | 2016-11-16 | United Technologies Corp | Stator segment |
US9988915B2 (en) | 2013-03-13 | 2018-06-05 | United Technologies Corporation | Stator segment |
EP2787178A1 (en) * | 2013-04-03 | 2014-10-08 | MTU Aero Engines GmbH | Guide vane assembly |
US20140363284A1 (en) * | 2013-06-06 | 2014-12-11 | MTU Aero Engines AG | Stator vane segment of a fluid flow machine and turbine |
US9664057B2 (en) * | 2013-06-06 | 2017-05-30 | MTU Aero Engines AG | Stator vane segment of a fluid flow machine and turbine |
US10927688B2 (en) | 2015-06-29 | 2021-02-23 | General Electric Company | Steam turbine nozzle segment for partial arc application, related assembly and steam turbine |
US20190120073A1 (en) * | 2017-10-23 | 2019-04-25 | Doosan Heavy Industries & Construction Co., Ltd. | Sealing assembly and gas turbine including the same |
US10801347B2 (en) * | 2017-10-23 | 2020-10-13 | DOOSAN Heavy Industries Construction Co., LTD | Sealing assembly and gas turbine including the same |
FR3085416A1 (en) * | 2018-08-29 | 2020-03-06 | Safran Aircraft Engines | OUTPUT DIRECTIVE BLADE RECOMPOSING A PLATFORM AND A CRANKCASE INTERMEDIATE |
Also Published As
Publication number | Publication date |
---|---|
FR2967716A1 (en) | 2012-05-25 |
DE102011055617A1 (en) | 2012-07-19 |
CN102536336A (en) | 2012-07-04 |
JP2012112379A (en) | 2012-06-14 |
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Legal Events
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AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SINGH, ANSHUMAN;MACMILLAN, GLEN ARTHUR;MALINOWSKI, CHARLES ANDREW;AND OTHERS;SIGNING DATES FROM 20101112 TO 20101118;REEL/FRAME:025399/0676 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |