JP2014098508A - Gas turbine combustor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat transfer device excellent in simplicity of manufacturing process and long service life.SOLUTION: A heat transfer device 20 accelerating heat exchange between combustion air flowing along a surface of a liner 8 of a gas turbine combustor and the liner 8 comprises: a belt-like sheet 21 surrounding an outer circumference of the liner 8; longitudinal vortex fins 22 that are convex portions protruding from the sheet 21 toward an annular channel 11 of the combustion air, that generate longitudinal vortexes each having a central axis in a flow direction of the combustion air, and that agitate the combustion air flowing in the channel 11; and ribs 23 that are linear convex portions provided on the sheet 21 and that break a boundary layer generated in the combustion air agitated by the longitudinal vortex fins 22, and the convex portions acting as the longitudinal vortex fins 22 are made higher than the convex portions acting as the ribs 23.

Description

  The present invention relates to a gas turbine combustor.

  Combustor liners such as gas turbines, turbine blades, heat exchangers, fins, boilers, heating furnaces, etc. are required for each device to promote heat transfer between fluid and solid in cooling, heating, heat exchange, etc. Various structures are considered based on the specifications.

  For example, in a combustor such as a gas turbine for power generation, it is required to maintain necessary cooling performance with a small pressure loss without impairing gas turbine efficiency and to maintain the reliability of structural strength. Furthermore, from the viewpoint of consideration of environmental problems, it is required to reduce the emission amount of nitrogen oxide (NOx) generated in the combustor. NOx reduction is achieved by using premixed combustion in which fuel and air are mixed and burned before combustion, and combustion is performed in a state where the fuel / air mixing ratio (fuel / air ratio) is smaller than the theoretical mixing ratio. It is done.

  As a heat transfer device (heat transfer structure) for a gas turbine combustor in view of this point, there is one provided with a liner formed by connecting a plurality of cylindrical materials formed by rolling a substantially rectangular plate material into a cylindrical shape in the axial direction. (Japanese Patent Laid-Open No. 2001-280154). Each cylindrical member in the liner is connected to another adjacent cylindrical member in an overlapping manner, and the overlapping portion is connected by welding and brazing. In addition, a plurality of convex portions (vertical vortex generators) formed by pressing or the like are arranged along the circumferential direction at one end of each cylindrical material (downstream in the flow direction of compressed air from the compressor). Yes. The vertical vortex generator generates a vertical vortex having a central axis of rotation in the flow direction of the heat transfer medium (compressed air), and agitates the flow path of the heat transfer medium by the vertical vortex. Further, on the outer peripheral surface of the combustor liner, ribs (turbulence promoting bodies) for breaking the boundary layer generated in the heat transfer medium stirred by the vertical vortex generator are formed by welding and brazing or centrifugal casting. Is provided.

JP 2001-280154 A

  The heat transfer device disclosed in the above document was superior in terms of cooling performance, structural strength, low NOx properties, etc., compared to the previous one, but from the viewpoint of simplicity of manufacturing process and long life There is room to improve the structure.

  For example, the liner is formed by connecting a plurality of cylindrical members in the axial direction, and each cylindrical member is welded and joined at an overlap portion. Therefore, there is a possibility that the welded part may cause cracks, and long-term use may be hindered as compared to a case where welding is not used (that is, when a liner is formed with a single cylindrical member). There is. In addition, it can be pointed out that the manufacturing cost increases because the number of welding points increases the man-hours. This point becomes more prominent when welding is used to attach a rib that is a turbulent flow promoting body. Furthermore, when welding is used, each cylindrical member is thermally deformed, but other circular members that are combined with the combustor liner (for example, a disk with a fuel nozzle or a premix nozzle attached, or a transition piece (tail tube)) As a result, the combustor manufacturing process may be complicated by the trouble of shaping the liner again into a circular shape. Moreover, since the overlap part of each cylindrical member which forms a liner becomes a double structure and becomes thicker than another part, it can also point out that heat conductivity (coolability) falls compared with the said other part.

  An object of the present invention is to provide a heat transfer device that is excellent in the simplicity and long life of the manufacturing process.

  In order to achieve the above object, the present invention provides a heat transfer device that promotes heat exchange between a heat transfer medium that flows along the surface of the heat transfer object and the heat transfer object. A belt-like belt member that surrounds the outer periphery from the outer periphery, and a convex portion that protrudes from the belt member toward the flow path of the heat transfer medium, generating a vertical vortex having a central axis in the flow direction of the heat transfer medium, A vertical vortex generating portion for stirring the heat transfer medium flowing in the flow path, and a linear convex portion provided on the belt member, the boundary layer generated in the heat transfer medium stirred by the vertical vortex generating portion; A turbulent flow promoting portion that breaks, and the height of the convex portion related to the vertical vortex generating portion is made higher than the height of the convex portion related to the turbulent flow promoting portion.

  According to the present invention, it is possible to reduce the number of welding points related to the manufacture of the heat transfer device, so that the manufacturing process can be simplified and the life can be extended.

1 is a longitudinal sectional view of a gas turbine combustor according to an embodiment of the present invention. 1 is a perspective view of a combustor liner according to a first embodiment of the present invention. Sectional drawing of the heat-transfer apparatus in the III-III cross section in FIG. The top view when the cylindrical heat-transfer apparatus in FIG. 2 is expand | deployed planarly. The arrow view which looked at the heat-transfer apparatus from the V direction in FIG. Sectional drawing of the heat-transfer apparatus 20A in the same cross section as FIG. The top view when 20 A of heat-transfer apparatuses are expand | deployed planarly similarly to FIG. Sectional drawing of the heat-transfer apparatus 20B in the same cross section as FIG. The top view when the heat-transfer apparatus 20B is expand | deployed planarly similarly to FIG. Sectional drawing of the heat-transfer apparatus 20C in the same cross section as FIG. The top view when 20C of heat exchangers are expand | deployed planarly similarly to FIG. The perspective view of the combustor liner which concerns on the 5th Embodiment of this invention. The arrow line view which looked at heat-transfer apparatus 20D from the same direction as FIG. The perspective view of the combustor liner which concerns on the 6th Embodiment of this invention. Sectional drawing of the heat-transfer apparatus 20E in the XV-XV cross section in FIG. Sectional drawing of the heat-transfer apparatus 20F in the XVI-XVI cross section in FIG. The perspective view of the combustor liner which concerns on the 7th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, although the application range of the heat transfer device according to the present invention is wide, here, a gas turbine combustor having a turbulent flow field in a high temperature region will be described as an example.

  The heat transfer device according to the present invention is an air ring formed between a combustor liner and an outer cylinder (flow sleeve) with respect to an annular belt member (sheet) disposed so as to surround the combustor liner from the outer periphery. It is configured by providing a plurality of vertical vortex generating portions which are convex portions protruding into the flow path. The vertical vortex generator has a constant elevation angle with respect to the main flow direction of the cooling air in the annular flow path, and generates a vertical vortex having a rotation axis in the flow direction. The vertical vortex flows downstream by forming a vortex for greatly stirring the cooling air on the outer peripheral side (flow sleeve side) and the inner peripheral side (liner outer wall surface side) of the annular flow path. The fact that this cooling air flows with large agitation means that low temperature air is always supplied to the liner outer wall surface downstream of the flow path, and the air warmed by the liner outer wall surface is carried to the outer periphery side of the flow path, The convection cooling of the liner can be performed efficiently. Moreover, the turbulent flow promotion part (rib) which is a convex part lower than the said vertical vortex generating part was provided in the strip | belt member with the vertical vortex generating part. The major axis direction of the turbulent flow promoting portion intersects the main flow direction of the cooling air in a substantially right angle direction, thereby generating a complex vortex including a small vertical vortex component in the vicinity of the wall surface of the annular flow path. Although this vortex does not act like the vertical vortex generator, it has a great effect of destroying the boundary layer of the heat transfer medium generated in the vicinity of the wall surface. Is obtained. If the longitudinal vortex generator and the turbulent flow promoting portion are configured as a band member different from the combustor liner, it is not necessary to use welding for the combustor liner. It is possible to suppress the shortening of the service life.

  FIG. 1 is a schematic view of a gas turbine combustor (gas turbine power generation facility) including the gas turbine combustor according to the embodiment of the present invention in a longitudinal view. The gas turbine plant shown in this figure compresses air to produce high-pressure combustion air (compressed air), and mixes and burns combustion air 2 introduced from the compressor 1 and fuel. , A combustor 6 that generates high-temperature combustion gas 4, a turbine 3 that obtains an axial driving force by the energy of the combustion gas 4 generated by the combustor 6, and a generator 7 that is driven by the turbine 3 and generates electric power. ing. The illustrated rotary shafts of the compressor 1, the turbine 3, and the generator 7 are mechanically connected.

  The combustor 6 is provided with an outer cylinder (flow sleeve) 10, a cylindrical combustor liner (inner cylinder) 8 that is provided inside the outer cylinder 10 with a space therebetween, and that forms a combustion chamber 5 therein, and a liner 8. Is formed between a transition piece (tail tube) 9, an outer cylinder 10, and a liner 8, which are connected to an opening on the turbine 3 side and guide the combustion gas 4 generated in the combustion chamber 5 to the turbine 3. The liner 8 is closed so that the upstream end of the annular flow path 11 through which the combustion air (heat transfer medium) 2 supplied from the refrigerant flows and the upstream side of the liner 8 in the combustion gas flow direction face the combustion chamber 5. , And a plurality of burners 13 disposed on the plate 12.

  2 is a perspective view of the combustor liner 8 according to the first embodiment of the present invention, FIG. 3 is a cross-sectional view of the heat transfer device taken along the line III-III in FIG. 2, and FIG. FIG. 5 is a top view when the inner cylindrical heat transfer device is developed in a plane, and FIG. 5 is an arrow view of the heat transfer device (combustor) viewed from the V direction in FIG. 3. The direction indicated by the arrow in FIG. 1 is the flow direction of the combustion air 2. In addition, the same code | symbol may be attached | subjected to the same part as the previous figure, and description may be abbreviate | omitted (it is the same also in later figures).

  The liner 8 shown in these drawings is formed of a single cylindrical member having no weld joint. The high-pressure combustion air 2 flows along the outer peripheral surface of the liner 8 through the annular flow path 11 on the outer periphery of the liner 8, and the liner (heat transfer object) 8 exchanges heat with the combustion air (heat transfer medium). It is cooled by doing. A heat transfer device 20 is installed on the outer periphery of the liner 8 as means for promoting heat exchange between the combustion air as the heat transfer medium and the liner 8. A plurality of heat transfer devices 20 are attached to the liner 8. In the example of FIG. 2, the three heat transfer devices 20 are arranged at predetermined intervals along the axial direction of the liner 8 (the flow direction of the heat transfer medium). Has been placed. The heat transfer device 20 includes a sheet (band member) 21, a vertical vortex fin (vertical vortex generating portion) 22, and a rib (turbulent flow promoting portion) 23.

  The sheet 21 is a belt-shaped member that surrounds the liner 8 from its outer periphery. The illustrated sheet 21 is formed in a substantially rectangular shape and is wound around the outer periphery of the liner 8. As a method of fixing the sheet 21 on the outer peripheral surface of the liner 8, a rectangular plate member is prepared as the sheet 21, the sheet 21 is wound around the surface of the liner 8, and then spotted on a plurality of locations of the sheet 21. Some are welded. In addition, the sheet | seat 21 is a rectangular plate member at the beginning, and makes the belt-shaped member as illustrated by bending the said plate member into cylindrical shape. Before winding the sheet 21 around the liner 8, it is preferable to mold the longitudinal vortex fins 22 and the ribs 23 into the sheet 21 as described later.

  The vertical vortex fins 22 are convex portions protruding from the sheet 21 toward the annular flow path 11, and the height of the vertical vortex fins 22 is gradually increased toward the downstream side in the flow direction of the combustion air ( (See FIG. 3). Further, as shown in FIG. 4, the vertical vortex fin 22 according to the present embodiment faces the downstream side at a predetermined angle (elevation angle) θ (for example, 10 ° to 20 °) with respect to the flow direction of the combustion air. The two fins spreading left and right are formed as one set, and a plurality of the one set of fins are arranged in the circumferential direction of the sheet 21 with a predetermined interval. If the vertical vortex fins 22 are configured in this manner, as shown in FIG. 5, a vertical vortex having a central axis in the flow direction of the combustion air is generated, and the combustion air flowing through the annular flow path 11 is agitated. Then, in one set of fins that spread to the left and right at an angle θ, longitudinal vortices having rotational directions opposite to each other are generated as shown in FIG.

  As a method of providing the vertical vortex fins 22 on the sheet 21, a mold corresponding to the shape of the vertical vortex fins 22 is prepared, and the mold is processed into the sheet 21 by pressing the mold with a press or the like. There is. When the vertical vortex fins 22 are thus formed by pressing, the vertical vortex fins 22 can be easily provided on the same member as the sheet 21, and the manufacturing cost can be reduced by simplifying the manufacturing method. The pair of longitudinal vortex fins 22 shown in the figure, which is inclined at an angle θ with respect to the flow direction, is formed by a single press using a press, and the sheet 21 between the two fins is formed during pressing. It is punched to form an opening. A plurality of sets of vertical vortex fins 22 may be molded at a time by one press.

  The ribs 23 are linear convex portions provided on the sheet 21 along the circumferential direction of the liner 8. The illustrated rib 23 has a rectangular cross section, but may be any other shape as long as it has a function for performing the function described later. The ribs 23 are disposed on the sheet 21 along a direction substantially perpendicular to the flow direction of the combustion air, and the ribs 23 illustrated are formed on the two end sides of the sheet 21 (the rectangular sheet 21). Two long sides). When the rib 23 is formed in this way, a complicated vortex including a small vertical vortex component is generated near the surface of the liner 8. Although this vortex does not have the effect of greatly stirring the entire flow path 11 like the vertical vortex fins 22, it destroys the boundary layer generated by the combustion air stirred by the vertical vortex fins 22 near the surface of the liner 8. Since an effect is produced, a cooling effect can be promoted when used in combination with the longitudinal vortex fins 22. The height of the rib 23 is lower than the height of the vertical vortex fins 22, and is preferably about 1 to 3 mm corresponding to the thickness of the boundary layer from the viewpoint of breaking the boundary layer.

  As a method of providing the ribs 23 on the sheet 21, there is a method in which both ends of the sheet 21 arranged so as to be substantially orthogonal to the flow direction of the combustion air are bent and molded. When the ribs 23 are formed by bending as described above, the ribs 23 can be easily provided on the same member as the sheet 21, and the manufacturing cost can be reduced by simplifying the manufacturing method. In addition, there is no limitation in particular in the molding order with respect to the sheet | seat 21 of the rib 23 and the vertical vortex fin 22, and any may be shape | molded previously. In the illustrated example, the case where the ribs 23 are provided at both the upstream and downstream ends of the sheet 21 has been described. However, the ribs 23 may be provided only at either one. Furthermore, in the illustrated example, the ribs 23 are provided on the entire circumference of the sheet 21, but they may be provided on a part of the circumferential direction. .

  The interval between the plurality of heat transfer devices 20 (sheets 21) arranged in the axial direction of the liner 8 is shorter than the position where the vortex generated by the preceding vertical vortex fins 22 disappears, and is always the outer peripheral surface of the liner 8. Make sure there is a vertical vortex above. Further, by winding the heat transfer device 20 around the liner 8 and integrating them, the plate thickness of the liner 8 locally increases, so that the structural strength increases. Thereby, the reliability of the structural strength can be improved and the life can be extended.

  According to the heat transfer device 20 according to the present embodiment configured as described above, a belt-like sheet 21 is wound around a simple cylindrical liner 8 that has not been subjected to any processing, and is appropriately fixed by spot welding or the like. The heat transfer device 20 can be attached simply by doing. Therefore, since welding is not performed on the liner 8, it is possible to prevent occurrence of defects (for example, cracks, man-hour increase, thermal deformation, etc.) due to welding. Further, since the heat transfer device 20 having the vertical vortex fins 22 and the ribs 23 is formed of a single member (sheet 21), it is processed as compared with the case where a heat transfer device is manufactured by combining a plurality of members. In addition, the manufacturing is easy, and the manufacturing cost can be reduced. Further, unlike the technique according to the above-mentioned document, there is no concern about a decrease in heat conductivity at an overlap portion between members obtained by dividing the liner into a plurality of parts. Therefore, according to this Embodiment, since the welding location regarding manufacture of the heat-transfer apparatus 20 can be reduced, the simplification of a manufacturing process and lifetime improvement are realizable.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The heat transfer device 20A according to the present embodiment corresponds to a heat transfer device 20 according to the first embodiment with a plurality of fins 24 added thereto, and the other parts are the same as those of the first embodiment. Therefore, explanation is omitted.

  FIG. 6 is a cross-sectional view of the heat transfer device 20A in the same cross section as FIG. 3, and FIG. 7 is a top view when the heat transfer device 20A is developed in a planar shape as in FIG. These heat transfer devices 20A are located between the longitudinal vortex fins 22 and the ribs 23 (upstream ribs 23 or downstream ribs 23) on the sheet 21, and extend along the flow direction of the combustion air. A plurality of fins (fin portions) 24 are provided. In the illustrated example, the height of the fin 24 is equal to the height of the rib 23. As for the manufacturing method of the fin 24, there is a method in which the sheet 21 is molded by a machine tool such as a press machine in the same manner as the vertical vortex fin 22. Further, the circumferential position of the fin 24 located between the upstream rib 23 and the longitudinal vortex fin 22 in the liner 8 and the liner 8 of the fin 24 located between the longitudinal vortex fin 22 and the downstream rib 23 are also shown. The positions in the circumferential direction are different from each other, and the both are arranged so as to be shifted by a half of the circumferential arrangement interval of one fin 24.

  When the fins 24 are provided as described above, the vortex generated by the rib 23 is suppressed from interfering with other vortices and is not easily broken. Thereby, the destruction of the boundary layer becomes easier than in the first embodiment. Further, in the heat transfer device 20 according to the first embodiment, a region (overlap portion) where the liner 8 and the sheet 21 (heat transfer device 20) overlap is generated due to the structure in which the sheet 21 is wound around the surface of the liner 8. There is a possibility that the heat transfer characteristics are locally lowered in the region. On the other hand, in this Embodiment, since the opening part is provided in the sheet | seat 21 by providing the fin 24 by press work, the area of the said area | region can be reduced. Thereby, the heat transfer characteristics of the liner 8 and the sheet 21 can be improved.

  Next, a third embodiment of the present invention will be described with reference to FIGS. The heat transfer device 20B according to the present embodiment corresponds to a sheet 21 according to the first embodiment provided with a plurality of through holes (openings) 25. Since other parts are the same as those of the first embodiment, description thereof is omitted.

  FIG. 8 is a cross-sectional view of the heat transfer device 20B in the same cross section as FIG. 3, and FIG. 9 is a top view when the heat transfer device 20B is developed in a planar shape as in FIG. The heat transfer device 20 </ b> B shown in these drawings includes a plurality of through holes 25 provided in the sheet 21. The arrangement of the through holes 25 on the sheet 21 is not particularly limited, but it is preferable to arrange the through holes 25 on the sheet 21 from the viewpoint of equalizing the heat transfer characteristics of the heat transfer device 20B. Although the illustrated through hole 25 is circular, the shape is not particularly limited. As a processing method of the through-hole 25, there is a method in which the sheet 21 is punched and molded by a machine tool such as a press machine as in the above-described parts.

  Even if the through holes 25 are provided in this way, the area of the region where the liner 8 and the sheet 21 (heat transfer device 20) overlap can be reduced, so that the heat transfer characteristics of the liner 8 and the sheet 21 can be improved.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. The heat transfer device 20 </ b> C according to the present embodiment corresponds to a sheet 21 according to the first embodiment provided with a plurality of vertical vortex fins 22 </ b> A. Since other parts are the same as those of the first embodiment, description thereof is omitted.

  FIG. 10 is a cross-sectional view of the heat transfer device 20C in the same cross section as FIG. 3, and FIG. 11 is a top view when the heat transfer device 20C is developed in a planar shape as in FIG. The heat transfer device 20 </ b> C referred to in these drawings includes a plurality of vertical vortex fins 22 </ b> A arranged in parallel on the seat 21 along a flow direction of combustion air with a predetermined interval. In the illustrated heat transfer device 20 </ b> C, two rows of vertical vortex fins 22 </ b> A are arranged in the combustion air flow direction, and a plurality of vertical vortex fins 22 </ b> A in each row are arranged along the circumferential direction of the liner 8. Further, the arrangement position of the vertical vortex fins 22A in the upstream row and the arrangement position of the vertical vortex fins 22B in the downstream row are shifted by a half of the circumferential interval of the vertical vortex fins 22A in one row. Thus, when the arrangement positions of the vertical vortex fins 22A in each row are made different, there is a merit that interference of the vertical vortex generated in each row can be suppressed.

  When the number of the vertical vortex fins 22A on the sheet 21 is increased as described above, the number of vertical vortices generated in the combustion air can be increased. The shape of the vertical vortex fin 22A in this case is considered to be smaller in terms of manufacturing size than that of the first embodiment, but the small vertical vortex generated by the vertical vortex fin 22A is By combining with the function of the rib 23, the combustion air flow near the surface of the liner 8 is further agitated, so that the destructive action of the boundary layer can be improved. Therefore, according to the present embodiment, the cooling efficiency of the liner 8 can be improved.

  It should be noted that the size of the vertical vortex generated may be changed by changing the size and height of the vertical vortex fins 22A of each row (that is, the first row and the second row).

  A fifth embodiment of the present invention will be described with reference to FIGS. The heat transfer device 20D according to the present embodiment corresponds to a heat transfer device 20 (sheet 21) according to the first embodiment in which a plurality of partition walls (partition walls) 26 are added. Since other parts are the same as those of the first embodiment, description thereof is omitted.

  FIG. 12 is a perspective view of a combustor liner according to a fifth embodiment of the present invention, and FIG. 13 is an arrow view of the heat transfer device 20D viewed from the same direction as FIG. The heat transfer device 20D shown in these figures includes a plurality of partition walls 26 attached to the seat 21 and extending along the flow direction of the combustion air. Each partition wall 26 is spanned across a plurality of sheets 21 installed at different positions in the axial direction of the liner 8. Further, each partition wall 26 is installed on both the left and right sides of the set of vertical vortex fins 22 so as to divide the set of vertical vortex fins 22, and the other heat transfer devices 20 </ b> D having different axial positions with respect to the liner 8. The vertical vortex fins 22 are similarly divided. The height of each partition wall 26 is higher than the height of the vertical vortex fins 22.

  As described above, the rotation directions of the vortexes generated by the two vertical vortex fins facing each other in the pair of vertical vortex fins 22 are opposite to each other, and therefore the circumferential direction of the set of vertical vortex fins 22 and the liner 8 The vertical vortices formed by other adjacent vertical vortex fins 22 may interfere with each other. On the other hand, when the partition wall 26 is provided as described above, the interference with the vertical vortex formed by the other adjacent vertical vortex fins 22 can be suppressed as shown in FIG. Further, in the present embodiment, in order to enhance the independent action of the pair of vortex fins generated by the pair of longitudinal vortex fins 22, the partition walls 32 are provided along the flow direction of the combustion air for each pair of longitudinal vortex fins. . As a result, a pair of vertical vortex fins 22 are installed in the flow paths separated by the partition walls 26, so that it is possible to obtain a stable independent vortex action without being affected by adjacent vortices. It becomes. Moreover, since the partition wall 32 is provided along the flow direction of the heat transfer medium, the cooling efficiency of the liner 8 can be improved because the function as a radiation fin can be obtained at the same time without increasing the pressure loss.

  Next, a sixth embodiment of the present invention will be described with reference to FIG. 14, FIG. 15 and FIG. The heat transfer devices 20E and 20F according to the present embodiment correspond to those in which the heat transfer device 20 (sheet 21) of the first embodiment is arranged in the radial direction from the outer surface of the liner 8 with a gap therebetween. Since other parts are the same as those of the first embodiment, description thereof is omitted.

  14 is a perspective view of a combustor liner according to a sixth embodiment of the present invention, FIG. 15 is a cross-sectional view of the heat transfer device 20E in the XV-XV cross section in FIG. 14, and FIG. It is sectional drawing of the heat-transfer apparatus 20F in the XVI-XVI cross section in the inside. The liner 8 shown in these drawings is disposed so as to be positioned between two heat transfer devices 20E disposed at predetermined intervals in the axial direction of the liner 8 and the two heat transfer devices 20E. A heat transfer device 20F is provided.

  Each of the heat transfer devices 20E and 20F includes a sheet 21A, a rib 23A, and a support (support member) 27. The sheet 21 </ b> A is a cylindrical member that is disposed outside the outer peripheral surface of the liner 8 (outside in the radial direction of the liner 8) with a gap therebetween. The diameter of the sheet 21 </ b> A is larger than the diameter of the liner 8, and is a double cylinder system in which a cylinder formed by the sheet 21 </ b> A is disposed together with the cylinder of the liner 8. The sheet 21 </ b> A is fixed to the liner 8 via a support 27 attached so as to protrude from the outer peripheral surface (outer surface) of the liner 8.

  The ribs 23A are attached on the outer peripheral surface of the liner 8 so as to correspond to both axial ends of the sheet 21A. That is, the position of the rib 23A is the same as that of the first embodiment (rib 23).

  As shown in FIG. 15, the heat transfer device 20 </ b> E includes vertical vortex fins 22 that are convex portions protruding toward the outer annular flow path 11 </ b> A defined by the sheet 21 </ b> A and the outer cylinder 10. That is, the vertical vortex fins 22 protrude outward in the radial direction of the liner 8 as in the first embodiment. On the other hand, as shown in FIG. 16, the heat transfer device F includes vertical vortex fins 22 </ b> B that are convex portions protruding toward the inner annular flow path 11 </ b> B defined by the sheet 21 </ b> A and the liner 8. That is, the vertical vortex fins 22 </ b> B protrude toward the inner side in the radial direction of the liner 8. The sheets 21A provided with the vertical vortex fins 22 and the sheets 21A provided with the vertical vortex fins 22B are alternately arranged in the flow direction of combustion air (the axial direction of the liner 8).

  When the combustor liner is configured in this manner, a vertical vortex is formed on the outer peripheral side (outer annular flow passage 11A) of the sheet 21A in the vicinity of the heat transfer device 20E, and the inner peripheral side of the sheet 21A (in the vicinity of the heat transfer device 20F). Longitudinal vortices are formed in the inner annular flow path 11B). When the liner 8 is viewed as a whole, longitudinal vortices are alternately formed at locations near and far from the outer peripheral surface. Thereby, since the combustion air of a low temperature state and the combustion air of a high temperature state can be stirred effectively, the cooling efficiency of the liner 8 can be improved.

  In the present embodiment, the heat transfer devices having the vertical vortex fins on the inner side and the outer side are alternately arranged, but a plurality of heat transfer devices having the vertical vortex fins on the inner side and the outer side are arranged in the axial direction of the liner 8. You may do it.

  Next, a seventh embodiment of the present invention will be described with reference to FIG. In the heat transfer device 20G according to the present embodiment, a plurality of heat transfer devices 20E according to the sixth embodiment are arranged in the axial direction of the liner 8, and each of the heat transfer devices 20E forms an inner annular flow together with the outer periphery of the liner 8. This corresponds to the addition of a corrugated heat sink 28 in the path 11B.

  FIG. 17 is a perspective view of a combustor liner according to a seventh embodiment of the present invention. A corrugated plate-like radiator 28 formed by folding a plate material into a bellows shape is inserted into the inner annular flow path 11B formed by the heat transfer device 20G shown in FIG. When the heat radiator 28 is thus inserted into the annular channel 11B, the heat on the outer surface of the liner 8 is radiated to the combustion air via the heat radiator 28. Furthermore, the combustion air is agitated by the action of the vertical vortex generated by the vertical vortex fins 22, and the low-temperature combustion air is effectively supplied to the radiator 28, so that the cooling efficiency of the liner 8 can be improved.

  By the way, this invention is not limited to said each embodiment, The various modifications within the range which does not deviate from the summary are included. For example, the present invention is not limited to the one having all the configurations described in the above embodiments, and includes a configuration in which a part of the configuration is deleted. In addition, part of the configuration according to one embodiment can be added to or replaced with the configuration according to another embodiment.

  In each of the above embodiments, only the case where the heat transfer object is a liner of a gas turbine combustor has been described. However, if the heat transfer medium such as air flows along the surface, the present invention is combusted. It can be applied in the same way as a container liner. In each of the above embodiments, the case where the combustor liner as the heat transfer object is cooled by the heat transfer medium has been described. However, the present invention is similarly applied to the case where the heat transfer object is heated by the heat transfer medium. Can be applied.

  DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Combustion air, 3 ... Turbine, 4 ... Combustion gas, 5 ... Combustion chamber, 6 ... Combustor, 7 ... Generator, 8 ... Liner, 9 ... Transition piece, 10 ... Outer cylinder, 11 ... Annular flow path, 12 ... plate, 13 ... burner, 20 ... heat transfer device, 21 ... sheet, 22 ... vertical vortex fin, 23 ... rib, 24 ... fin, 25 ... through hole, 26 ... partition wall, 27 ... support, 28 ... Heat radiator

Claims (12)

In the heat transfer device that promotes heat exchange between the heat transfer medium flowing along the surface of the heat transfer object and the heat transfer object,
A belt-like belt member surrounding the heat transfer object from the outer periphery;
A convex portion protruding from the belt member toward the flow path of the heat transfer medium, generating a vertical vortex having a central axis in the flow direction of the heat transfer medium, and stirring the heat transfer medium flowing through the flow path A vortex generator,
A linear convex portion provided on the belt member, comprising a turbulence promoting portion for breaking a boundary layer generated in a heat transfer medium stirred by the vertical vortex generating portion,
The height of the convex part which concerns on the said vertical vortex generating part is higher than the height of the convex part which concerns on the said turbulent flow promotion part, The heat transfer apparatus characterized by the above-mentioned. The heat transfer device according to claim 1,
The belt member is wound around an outer periphery of the heat transfer object. The heat transfer device according to claim 1,
A fin portion positioned between the longitudinal vortex generating portion and the turbulent flow promoting portion in the belt member and extending along the flow direction of the heat transfer medium;
The height of the said fin part is equivalent to the height of the convex part which concerns on the said turbulent flow promotion part, The heat transfer apparatus characterized by the above-mentioned. The heat transfer device according to claim 1,
The heat transfer device further comprising a plurality of holes provided in the belt member. The heat transfer device according to claim 1,
A plurality of the vertical vortex generators are provided on the belt member along the flow direction of the heat transfer medium. The heat transfer device according to claim 1,
The belt member is arranged with a space from the heat transfer object,
A heat transfer device further comprising a support member for fixing the belt member to the surface of the heat transfer object. The heat transfer device according to claim 6,
The vertical vortex generator is a first protrusion protruding toward a flow path defined by the band member and the heat transfer object, or a first protrusion protruding from the band member toward the outside of the band member. A heat transfer device characterized by being two convex portions. The heat transfer device according to claim 6,
A plurality of the band members are arranged with respect to the heat transfer object along the flow direction of the heat transfer medium,
The vertical vortex generating portion provided in the plurality of belt members is a first protrusion protruding toward a flow path defined by the belt member and the heat transfer object, or the belt from the belt member. A second protrusion protruding toward the outside of the member;
The belt member provided with the first convex portion and the belt member provided with the second convex portion are alternately arranged in the flow direction of the heat transfer medium. The heat transfer device according to claim 6,
A heat transfer device, further comprising a corrugated heat sink inserted in a gap located between the belt member and the heat transfer object. The heat transfer device according to claim 1,
A partition part attached to the belt member and extending along the flow direction of the heat transfer medium;
The height of the said partition part is higher than the height of the said vertical vortex generating part, The heat transfer apparatus characterized by the above-mentioned.   A gas turbine combustor, wherein the heat transfer device according to any one of claims 1 to 10 is fixed to an outer periphery of a combustor liner. In the manufacturing method of the heat-transfer apparatus of Claim 1,
A procedure for molding the vertical vortex generating part by pressing a mold on a rectangular plate member,
A procedure for forming the turbulence promoting portion by bending at least one side of the long side of the plate member;
The band member is fixed on the outer periphery of the heat transfer object or the outer periphery while bending the plate member processed with the vertical vortex generating part and the turbulent flow promoting part into a cylindrical shape. And a procedure for fixing with a space from the surface.

Images