• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A rear end frame assembly (50) of a gas turbine transition piece includes a body (51) having a downstream facing sealing surface (59) at a rear end (24), at least a portion of the downstream facing sealing surface (59) being configured to a heat shield (80) located near the rear end of the body (51), the heat shield (80) being adapted to direct at least a portion of the combustion exhaust stream from the rear end (24) of the Deflecting body (51) and one or more heat shield supports (90) attached to the body (51) and adapted to at least partially restrict deflection of the heat shield (80) back towards the body (51).
    公开号:CH710508A2
    申请号:CH01790/15
    申请日:2015-12-08
    公开日:2016-06-15
    发明作者:Carmine Bellino Mark；John Stoia Lucas；Paul Willis Christopher
    申请人:Gen Electric；
    IPC主号:
    专利说明:

    BACKGROUND TO THE INVENTION
    The subject matter disclosed herein relates to gas turbine transition pieces and more specifically to rear heat shield gas turbine transition piece frame assemblies.
    Turbine components, e.g. Blades (vanes), nozzles (vanes), transition pieces, and other hot gas path components of industrial and aerospace gas turbines may be formed of iron, nickel, cobalt, or superalloys having suitable mechanical and environmental properties with respect to turbine operating temperatures and conditions. Since the efficiency of a turbomachine depends in part on operating temperatures, there may be a need for components such as turbine blades, nozzles, and adapters capable of withstanding increasingly higher temperatures.
    Gas turbine plants may generally include a compressor, a combustor assembly, one or more fuel nozzles, and a turbine. Air enters the gas turbine through an air intake and is compressed by the compressor. The compressed air is then mixed with fuel, which is supplied by means of the fuel nozzles. The air / fuel mixture is supplied to the combustion chamber in an amount specified for the combustion. The combustion produces pressurized exhaust gases that drive turbine blades.
    The combustor assembly may include a transition piece for channeling a stream of combustion products (i.e., the combustion exhaust stream) and directing it from the combustor to a first stage nozzle. The transition piece may have a front end and a rear end. A rear frame arrangement for the transition piece may be arranged between the rear end of the transition piece and the first stage nozzle. The combustion exhaust stream flows through the transition piece at relatively high temperatures, which reduces thermal stress and corrosion on the rear frame, e.g. along the inner and outer rails, can increase. Cooling holes or openings may be formed in the rear frame assembly of the transition piece to assist in recycling the relatively cooler compressor discharge air. Additionally or alternatively, a heat shield may protect the heat frame assembly by deflecting at least a portion of the combustion exhaust stream therefrom. However, the heat frame may be subjected to external forces during manufacture, modification (e.g., repair), installation, operation, and / or transportation.
    Accordingly, modified rear frame assemblies with cooling channels would be desirable in the art.
    BRIEF SUMMARY OF THE INVENTION
    In one embodiment, a rear frame assembly for a rear end of a gas turbine transition piece is disclosed. The rear frame assembly includes a body having a downstream facing sealing surface at a rear end, wherein at least a portion of the downstream facing sealing surface is configured to be exposed to a combustion exhaust stream. The rear frame assembly additionally includes a heat shield disposed proximate the rear end of the body, the heat shield being configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body, and one or more heat shield supports attached to the body attached and are adapted to at least partially limit a deflection of the heat shield back in the direction of the body.
    In another embodiment, a method of assembling a gas turbine transition piece is disclosed. The method includes the steps of attaching a rear frame assembly to a rear end of the gas turbine transition piece. The rear frame assembly includes a body having a downstream facing sealing surface at a rear end with at least a portion of the downstream facing sealing surface configured to be exposed to a combustion exhaust gas stream and a heat shield disposed proximate the rearward end of the body wherein the heat shield is configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body. The method further includes attaching one or more heat shield supports to the body, wherein the one or more heat shield supports are configured to at least partially restrict deflection of the heat shield back toward the body.
    According to the invention, a rear frame assembly for a gas turbine transition piece may include: a body having a downstream facing sealing surface at a rear end, at least a portion of the downstream facing sealing surface being adapted to be exposed to a combustion exhaust stream; a heat shield disposed near the rear end of the body, the heat shield configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body; and one or more heat shield supports attached to the body and configured to at least partially restrict deflection of the heat shield back toward the body.
    The heat shield and the body can be based on a continuous part.
    The rear frame assembly of any type mentioned above may further include an outer gutter separation from the body on at least a portion of the heat shield.
    The one or more heat shield supports of any of the above-mentioned rear frame assemblies may be attached to an outer surface of the body.
    The one or more heat shield supports of any of the above-mentioned rear frame assemblies may be at least partially disposed in a recess in an outer surface of the base body.
    The one or more heat shield supports of any of the aforementioned rear frame assemblies may include a support arm extending from a base portion.
    The base portion of any of the above-mentioned rear frame assemblies may be attached to an outer surface of the body.
    The base portion and the support arm of any of the above-mentioned rear frame assembly may be at least partially disposed in a recess in the outer surface of the base body.
    The base portion of any of the above-mentioned rear frame assemblies may include one or more joint gaps, wherein the base portion is connected to the body at one or more joint gaps by welding.
    The at least one heat shield support of any of the aforementioned rear frame assemblies may be configured to be separated from the heat shield by a tolerance gap at least at the beginning.
    The body of any of the above-mentioned rear frame assemblies may have a plurality of walls.
    Each of the plurality of walls of any of the aforementioned rear frame assemblies may include at least one heat shield support.
    The heat shield of any of the above-mentioned rear frame assemblies may include the downstream facing sealing surface.
    The rear frame assembly of any type mentioned above may further include one or more outer cooling holes fluidly connected to one or more inner cooling outlets.
    According to the invention, there may be provided a method of assembling a gas turbine transition piece, the method comprising: attaching a rear frame assembly to a rearward end of the gas turbine transition piece, the rear frame assembly including: a body having a downstream facing sealing surface at a rearward end wherein at least a portion of the downstream facing sealing surface is configured to be exposed to a combustion exhaust gas stream; and a heat shield disposed near the rear end of the body, the heat shield configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body; and attaching one or more heat shield supports to the body, wherein the one or more heat shield supports are adapted to at least partially restrict a deflection of the heat shield back toward the body.
    The method may provide that the one or more heat shield supports comprise a support arm extending from a base portion.
    The method of any type mentioned above may provide that the base portion has one or more connection gaps, wherein connecting the one or more heat shield supports includes welding to the one or more connection gaps.
    The method of any type mentioned above may provide that attaching the one or more heat shield supports to the body includes attaching the one or more heat shield supports to an exterior surface of the body.
    The method of any of the above mentioned types may provide that the body has a plurality of walls, wherein attaching the one or more heat shield supports to the body includes attaching at least one heat shield support from each of the walls.
    The method of any type mentioned above may provide that joining the one or more heat shield supports comprises separating at least one heat shield support from the heat shield through a tolerance gap.
    These and additional features, which are disclosed by the embodiments discussed herein, will become more apparent after reading the following detailed description in conjunction with the drawings.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The embodiments presented with reference to the figures are given by way of illustration and example and are not intended to limit the invention as defined by the claims. The following detailed description of the illustrative embodiments will be understood after reading in conjunction with the accompanying drawings in which like elements are designated by like reference numerals:<Tb> FIG. 1 <SEP> is a cross-sectional view of a combustion system according to one or more embodiments shown or described herein;<Tb> FIG. Figure 2 shows a perspective view of a rear frame assembly for a transition piece having a plurality of heat shield support locations according to one or more embodiments shown or described herein;<Tb> FIG. 3 <SEP> shows in a side view a heat shield support for a heat shield with a tolerance gap according to one or more embodiments shown or described here;<Tb> FIG. 4 <SEP> illustrates in a perspective view the heat shield support of FIG. 3 in accordance with one or more embodiments shown or described herein; and<Tb> FIG. 5 <SEP> illustrates a method of assembling a gas turbine transition piece according to one or more embodiments shown or described herein.
    DETAILED DESCRIPTION OF THE INVENTION
    Hereinafter, one or more specific embodiments of the present invention will be described. In an effort to provide a concise description of these embodiments, not all features of actual practice may be included in the description. It should be appreciated that in developing each such implementation, as in any engineering or design project, numerous application-specific decisions must be made in order to achieve specific objectives of the designers, e.g. Conformance with systemic and economic constraints that may vary from one implementation to another. Moreover, it should be understood that while such a development effort may be complex and time consuming, it nonetheless would be routine to the design, manufacture and manufacture of those skilled in the art having the benefit of this description.
    When elements of various embodiments of the present invention are introduced, the articles "a," "an," "the," and "the" mean that one or more of the elements are present. The terms "include," "include," and "exhibit" are to be understood as inclusive, meaning that there may be additional elements that are different from the listed elements.
    Referring to Figure 1, a sectional view of a combustor system 10 is illustrated. Components of the combustor system 10 include a transition piece 18 for enclosing and channeling combustion products facing a stream from a combustor 12 of a gas turbine to a first stage nozzle 16. It should be noted that there is an annular group of combustors 12 for generating and directing hot gases to an annular array of nozzles 16, one of each of these combustor assemblies 12, nozzles 16, and transition pieces 18 being shown. Further, a portion of the compressor outlet housing 28 is illustrated. In operation, compressor discharge air 30 may be provided in the space between the housing 28 and the combustor wall 14 and the transition piece 18 for cooling components of the combustor system 10 and as a source of dilution air.
    The transition piece 18 may include a housing 20 for channeling and directing the flow of the combustion exhaust stream 31 from the combustion chamber 12 to the nozzle 16. Thus, the housing 20 has a front end 22 and a rear end 24 to accommodate the combustion products and to perform the flow of the combustion exhaust stream 31 in the direction of the nozzle 16. The front end 22 of the transition piece 18 may be substantially circular. In one embodiment, the transition piece 18 may transition from a circular forward end 22 substantially axially and radially inwardly with respect to the turbine axis and terminate in a slightly curved, generally rectilinear rear end 24. Between the rear end 24 and the nozzle 16 may be a Rear frame assembly 50 may be arranged. The rear frame assembly 50 may be generally rectilinear to substantially conform to the shape of the rear end 24 of the transition piece 18 and may be attached to the transition piece 18 by bonding (eg, brazing, welding, and the like) the rear frame assembly 50 to the rear end 24 by means of any suitable connection technique: be attached.
    With reference to Figures 2-4, an embodiment of a rear frame assembly 50 for a transition piece 18 is illustrated in accordance with one aspect of the subject matter disclosed herein. The rear frame assembly 50 may generally include a base 51 that is substantially rectilinear. However, it should be readily understood that the body 51 may have any desired shape and need not have the particular shape illustrated in FIG. For example, the rear frame assembly 50 may be circular, oval, or any suitable polygon shape, such as having multiple walls, as illustrated. The shape of the rear frame assembly 50 will depend largely upon the particular shape and construction of the transition piece 18.
    The body 51 has an outer surface 52 (which faces the compressor discharge air 30) and a plurality of inner surfaces 53 (i.e., surfaces other than the outer surface 52, such as those facing the combustion exhaust gas stream 31). Specifically, the main body 51 has inner surfaces 53 having an inner hot end surface 56 (ie, the surface facing the interior of the transition piece 18 that conducts the flow of the combustion exhaust gas flow 31) and a downstream facing seal surface 59 (ie, the surface containing the downstream guide vanes and turbine blades). The body 51 may further include at least one attachment hook 55 extending generally outwardly from the body 51. The attachment hook 55 may be configured to secure the rear frame 50 to any combustion product receptacle or device.
    The body 51 may further include a laterally extending flange 54. The flange 54 may be configured such that the rear frame assembly 50 may be secured to a transition piece 18 of a combustor system. For example, the rear frame assembly 50 may be welded to the transition piece 18. In such an embodiment, an outer lip of the flange 54 may be configured such that the flange 54 may be welded to the rear end 24 (i.e., the end toward the turbine rearward side) of the transition piece 18. Additionally, the flange 54 may generally be any length and thickness. In one embodiment, the maximum flange length is 5.1 cm and the flange thickness is in the range of 0.3 cm to 0.65 cm, e.g. from 0.4 to 0.6 and all other subranges in between.
    The rear frame assembly 50 may further include a heat shield 80 disposed proximate the rear end 24 of the body 51. The heat shield 80 may be of any construction generally configured (e.g., aligned) to deflect at least a portion of the combustion exhaust stream 31 away from the rear end 24 of the body 51 of the rear frame assembly 50.
    For example, as illustrated in FIGS. 2-4, the heat shield 80 may generally include a flange-shaped wall extending away from the body 51 near the rear end 24. The heat shield 80 and the base 51 may be based on a continuous (one-piece) part, for example, when the heat shield 80 is machined from the original base 51, or when the heat shield 80 (eg, by welding, brazing or the like) to the main body 51 is glued or bonded integrally. For example, an outer groove 82 may be machined out of the body 51 to produce the heat shield 80. The relative thickness of the heat shield 80 and the outer channel 82 may be of any dimension suitable for at least partially deflecting at least a portion of the combustion exhaust stream 31 away from the rear end 24 of the body 51. In some embodiments, the heat shield 80 may have an additional construction attached to the body 51 (e.g., mechanically).
    The heat shield 80 may extend over the entire circumference of the rear end 24 of the body 51, may extend only over a portion of the circumference of the rear end 24 of the body 51 or may extend over a plurality of portions of the periphery of the rear end 24 of the body Body 51 extend (for example, in multiple segments). In addition, in some embodiments, the heat shield 80 may be disposed on the outermost edge of the rear end 24 of the body 51 such that the heat shield 80 has the downstream facing sealing surface 59. In some embodiments, the heat shield 80 may be located further inwardly from the edge of the rear end 24 of the body 51.
    The heat shield 80 may further be based on any material or materials suitable for at least partially deflecting at least a portion of the combustion exhaust stream 31 from the rear end 24 of the body 51. For example, in some embodiments, for example, where the heat shield 80 and the body 51 are based on a continuous portion, the heat shield 80 and the body 51 may have the same or substantially the same material. In some embodiments, for example, when the heat shield 80 is originally based on a separate part that is subsequently adhered, bonded, attached, or otherwise attached to the body 51, the heat shield 80 and body 51 may comprise different materials. In some embodiments, for example, when diffusion bonding and / or brazing is to be used, the heat shield 80 may include IN625, IN617, H230, H282, GTD222, FSX414, MarM509, X40 / 45, L605 / Haynes 25, Haynes 188, or the like. In addition, the heat shield 80 may further include one or more coatings suitable for use between a transition piece 18 and the nozzle 16 in a combustion system 10.
    Still referring to FIGS. 2-4, the rear frame assembly 50 may further include one or more heat shield supports 90. The one or more heat shield supports 90 may be based on any member attached to the base 51 and configured to at least partially restrict deflection (e.g., bending) of the heat shield 80 back toward the base 51. Such heat shield supports 90 are thereby able to protect the heat shield 80 during manufacture, alteration (e.g., repair), installation, operation, and / or transportation by restricting its movement caused by any external forces.
    As best illustrated in FIGS. 3 and 4, in some embodiments, the heat shield support 90 may include a base portion 91 and a support arm 92. The base portion 91 may include any portion that is adapted to be attached to the body 51, while the support arm 92 may include any portion extending away from the base portion 91 that is capable of deflecting the body Heat shield 80 back in the direction of the body at least partially physically restrict.
    For example, the base portion 91 may have an extended portion to enlarge the surface contact points with the main body 51. Such embodiments may be provided, in particular, when the base portion 91 has a substantially circular, oblong, oval, rectangular or similar geometry. In still other embodiments, the base portion 91, as illustrated for example in FIGS. 3 and 4, may include one or more interconnecting gaps 97 having cavities in the base portion 91 that may be utilized to secure the base portion (eg, by welding) to the body 51 as will be explained below.
    Likewise, the support arm 92 may have any portion extending away from the body portion 91 toward the heat shield 80. The support arm 92 may have a rigid construction so that it would prevent the heat shield 80 from bending back toward the main body 51. In some embodiments, the support arm 92 may have a substantially rectangular construction as illustrated. In further embodiments, the support arm 92 may have any other shape extending from the base portion 91. In still other embodiments, the heat shield support 90 may include a single elongate member without significant contouring between a base portion 91 and a support arm 92. In other embodiments, the heat shield support 90 may include a plurality of base sections 91 and / or a plurality of support arms 92. For example, the heat shield support 90 may include a plurality of support arms 92 extending from a single base portion 91. Alternatively, a single support arm 92 may extend from a single base portion 91. While specific examples and configurations of heat shield supports have been described and illustrated herein, it should be understood that these are not to be considered as limiting and are merely exemplary; Any modified configuration suitable for restricting the deflection of the heat shield 80 in the direction of the main body 51 may also be used.
    The heat shield support 90 may be attached to the body 51 in a number of different configurations. For example, in some embodiments, the heat shield support 90 may be welded to the body 51. For example, in embodiments in which the heat shield support has a base portion 91 with one or more connection gaps 97, a weld may be disposed in the one or more connection gaps 97 to secure the heat shield support in place. In some embodiments, the heat shield support 90 may be brazed, keyed, mechanically attached, or the like to the body 51.
    The one or more heat shield supports 90 may be disposed at different locations. For example, in some embodiments, the one or more heat shield supports 90 may be attached to the outer surface 52 of the body 51. In some embodiments, the one or more heat shield supports 90, such as illustrated in FIGS. 3 and 4, may be at least partially disposed in a recess 95 in the outer surface 52 of the body 51.
    In some embodiments, the rear frame assembly 50 may include a plurality of heat shield supports 90. For example, as best illustrated in Figure 2, the main body 51 may have multiple walls (e.g., four walls). In such embodiments, each of the walls may include at least one heat shield support 90. The plurality of heat shield supports 90 may be evenly distributed or may be concentrated where external forces are possibly highest.
    In some embodiments, the heat shield support 90 may contact or even be bonded to the heat shield 80 after installation to prevent any deflection of the heat shield 80 back toward the body 51. However, in some embodiments, the heat shield support 90 may be configured to be separated from the heat shield 80, at least initially, by a tolerance gap 99. The tolerance gap 99 may have any initial distance value that allows the heat shield 80 to flex beyond the distance value of the tolerance gap 99 toward the body 51 before contacting the heat shield support 90. In such embodiments, the heat shield support 90 may at least partially restrict deflection of the heat shield 80 back toward the body 51 by limiting the amount of total deflection that can occur.
    [0049] In some embodiments, the rear frame assembly 50 may further include one or more outer cooling holes fluidly connected to one or more inner cooling outlets. The one or more outer cooling holes may be disposed on the outer surface 52 of the body 51 to trap compressor discharge air 30 outside of the transition piece 18. For example, the one or more outer cooling holes may extend inwardly from the outer surface 52 at an angle in the direction of the main body 51. As will be understood herein, the one or more outer cooling holes may be disposed at any mutual position about the rear frame assembly 50 and may have any suitable construction / orientation that will allow the capture of compressor discharge air 30 for subsequent distribution.
    Likewise, the one or more internal cooling outlets may be disposed on one or more of the inner surfaces 53 (eg, on the inner hot end surface 56 of the body 51 and / or on the downstream facing sealing surface 59 of the body 51) to supply the compressor discharge air 30 discharged from at least one or more external cooling holes. By positioning it on the inner hot face surface 56, the one or more inner cooling outlets may discharge compressor discharge air 30 into the interior of the rear frame assembly 50, which may facilitate control of the temperature of the hot gas path components. For example, cooling outlets may be disposed on the inner hot face surface 56 to facilitate cooling of the interior of the transition piece 18. Likewise, cooling outlets may be disposed on the downstream facing sealing surface 59 for directing cooling air against first stage nozzles or vanes.
    In such embodiments, the one or more internal cooling outlets may be disposed at any mutual position in the rear frame assembly 50 and may have any suitable construction / orientation (e.g., holes, gutters, or the like) that facilitate the escape of intercepted compressor discharge air 30. As should be appreciated, in some embodiments, the rear frame assembly 50 may include, for example, more internal cooling outlets than outer cooling holes due to a sufficient distribution of captured compressor discharge air 30. Such embodiments may allow for sufficient component cooling with less compressor discharge air 30 to increase the efficiency of the combustor system 10.
    Referring now additionally to FIG. 5, a method 100 of assembling a gas turbine transition piece is illustrated. The method first includes attaching a rear frame assembly 50 to a rear end 24 of a gas turbine transition piece 18 in step 110. As discussed above, the rear frame assembly 50 may include a body portion 51 having a downstream facing sealing surface 59 at a rear end 24, wherein at least a portion of the downstream facing sealing surface 59 is configured to be exposed to a combustion exhaust stream 31. The rear frame assembly 50, which is attached to the gas turbine transition piece 18 in step 110, further includes a heat shield 80 disposed proximate the rear end 24 of the body 51, wherein the heat shield 80 is configured to receive at least a portion of the combustion exhaust stream 31 to deflect away from the rear end 24 of the body 51.
    With further reference to FIG. 5, the method 100 further includes attaching one or more heat shield supports 90 to the body 51 in step 120. As discussed above, the one or more heat shield supports 90 may be configured to at least partially restrict deflection of the heat shield 80 back toward the body 51. The attachment of the one or more heat shield supports 90 in step 120 may be accomplished prior to attaching the rear frame assembly 50 to the gas turbine transition piece 18 in step 110 of the method 100, thereafter, concurrently therewith, or in combinations thereof.
    It should now be understood that heat shield supports can at least partially limit deflection of the heat shield back toward the body in a rear frame assembly of a transition piece by physically blocking and / or supporting the heat shield. One or more heat shield supports can help protect the heat shield by helping to shape and position it for any external forces encountered during manufacturing, modification (eg, repair), installation, operation, and / or transportation can be experienced.
    While the invention has been described in detail only by means of a limited number of embodiments, it should be readily understood that the invention is not limited to such described embodiments. Rather, the invention may be modified to embody any number of variations, modifications, substitutions, or equivalent arrangements not heretofore described, which, however, are within the scope of the invention. While various embodiments of the invention have been described, it is further understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention should not be construed as being limited by the foregoing description, but rather is limited only by the scope of the appended claims.
    Rear frame assemblies for rear ends of gas turbine transition pieces include a body having a downstream facing sealing surface at a rear end, wherein at least a portion of the downstream facing sealing surface is adapted to be exposed to a combustion exhaust stream, a heat shield proximate thereto the rear end of the body is arranged, wherein the heat shield is adapted to deflect at least a portion of the combustion exhaust gas flow away from the rear end of the body, and one or more heat shield supports, which are attached to the base body and adapted to a deflection of the heat shield back in At least partially limit the direction of the body.
    LIST OF REFERENCE NUMBERS
    [0057]<Tb> 10 <September> combustion system<Tb> 12 <September> combustor assembly<Tb> 14 <September> combustion chamber wall<Tb> 16 <September> nozzles<Tb> 18 <September> transition piece<Tb> 20 <September> Housing<tb> 22 <SEP> front end<tb> 24 <SEP> back end<Tb> 28 <September> Verdichterauslassgehäuse<Tb> 30 <September> compressor discharge<tb> 31 <SEP> Combustion exhaust gas flow<tb> 50 <SEP> rear frame assembly<Tb> 51 <September> body<Tb> 52 <September> outer surface<Tb> 53 <September> inner surface<Tb> 54 <September> flange<Tb> 55 <September> fastening hooks<tb> 56 <SEP> inner hot face surface<tb> 59 <SEP> downstream sealing surface<Tb> 80 <September> heat shield<tb> 82 <SEP> outer gutter<Tb> 90 <September> heat shield support<Tb> 91 <September> base section<Tb> 92 <September> support arm<tb> 95 <SEP> recess (of the body)<Tb> 97 <September> Connection column<Tb> 99 <September> tolerance gap<Tb> 100 <September> Process<tb> 110 <SEP> step (rear frame arrangement)<tb> 120 <SEP> step (heat shield support)
    权利要求:
    Claims (10)
    [1]
    A rear frame assembly for a gas turbine transition piece rear frame, the rear frame assembly including:a body having a downstream facing sealing surface at a rear end, at least a portion of the downstream facing sealing surface being adapted to be exposed to a combustion exhaust gas stream;a heat shield disposed near the rear end of the body, the heat shield configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body; andone or more heat shield supports, which are attached to the base body and adapted to at least partially restrict a deflection of the heat shield back in the direction of the base body.
    [2]
    2. Rear frame assembly according to claim 1, wherein the heat shield and the base body based on a continuous part.
    [3]
    3. Rear frame assembly according to one of the preceding claims, further comprising at least a portion of the heat shield an outer gutter separation from the main body.
    [4]
    4. rear frame assembly according to one of the preceding claims, wherein the one or more Hitzeschildabstützungen are connected to an outer surface of the base body.
    [5]
    5. Rear frame arrangement according to one of the preceding claims, wherein the one or more heat shield supports are arranged at least partially in a recess in an outer surface of the base body.
    [6]
    6. Rear frame assembly according to one of the preceding claims, wherein the one or more Hitzeschildabstützungen have a support arm which extends from a base portion.
    [7]
    7. rear frame assembly according to claim 6, wherein the base portion is connected to an outer surface of the base body.
    [8]
    8. rear frame assembly according to claim 7, wherein the base portion and the support arm are at least partially disposed in a recess in the outer surface of the base body.
    [9]
    9. Rear frame assembly according to claim 6, wherein the base portion has one or more connecting gaps, and wherein the base portion is connected at the one or more connecting gaps by welding to the base body.
    [10]
    10. A method of assembling a gas turbine transition piece, the method comprising:Attaching a rear frame assembly to a rear end of the gas turbine transition piece, the rear frame assembly including:a body having a downstream facing sealing surface at a rear end, at least a portion of the downstream facing sealing surface being adapted to be exposed to a combustion exhaust gas stream; anda heat shield disposed near the rear end of the body, the heat shield configured to deflect at least a portion of the combustion exhaust stream away from the rear end of the body; andAttaching one or more heat shield supports on the base body, wherein the one or more heat shield supports are adapted to at least partially limit a deflection of the heat shield back in the direction of the base body.
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    同族专利:
    公开号 | 公开日
    JP2016121679A|2016-07-07|
    DE102015120842A1|2016-06-16|
    US20160169113A1|2016-06-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8491259B2|2009-08-26|2013-07-23|Siemens Energy, Inc.|Seal system between transition duct exit section and turbine inlet in a gas turbine engine|
    US8562000B2|2011-05-20|2013-10-22|Siemens Energy, Inc.|Turbine combustion system transition piece side seals|DE102020204320A1|2020-04-02|2021-10-07|Psa Automobiles Sa|Motor vehicle internal combustion engine|
    法律状态:
    2017-03-15| NV| New agent|Representative=s name: GENERAL ELECTRIC TECHNOLOGY GMBH GLOBAL PATENT, CH |
    2019-03-15| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    US14/568,394|US20160169113A1|2014-12-12|2014-12-12|Gas turbine transition piece aft frame assembly supports|
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