CN102644484A

CN102644484A - Gas turbine engine

Info

Publication number: CN102644484A
Application number: CN2011100389374A
Authority: CN
Inventors: D.布特勒
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2011-02-16
Filing date: 2011-02-16
Publication date: 2012-08-22
Anticipated expiration: 2031-02-16
Also published as: CN102644484B

Abstract

The invention relates to a gas turbine engine which comprises a ring-shaped part section for guiding a vane assembly and a supporting and cooling device, wherein in the using process of the engine, heat combustion gas is guided onto an engine rotor vane by the part section; the part section comprises a platform; the platform is radially arranged inward/outward on the lateral surface of the part section relative to the rotating axis of the engine; the platform is provided with a rear edge part which is positioned on the downstream relative to the flow of the heat combustion gas passing through the part section; the rear edge part comprises a rail extending inward/outward from the radial direction of the rear edge part; the supporting and cooling device is used for supporting the part section and guiding cooling fluid to cool the part section; the device is radially positioned inside/outside the platform; and the device comprises a flange part extending outward/inward from the radial direction of the device. The gas turbine engine is characterized in that the device also comprises a plate vane sealing element and at least one retaining pin; the retaining pin extends to pass through the plate vane sealing element, the rail and the flange part to fix the part section on the device, so that the radial position of the part section is determined and the plate vane sealing element is kept in place, and thus, an interface between the rail and the flange part is sealed to stop the cooling fluid from entering.

Description

Gas turbine engine

Technical field

The present invention relates to gas turbine engine.

More specifically; The present invention relates to comprise that annular draws the gas turbine engine of portion's section of guide vane assembly; This section is directed to hot combustion gas on the rotor blade of motor in using the motor process; This section comprise with respect to the spin axis of motor by radially inwardly/to the platform of the side that is placed on said section; Said platform has the mobile rear edge part that is in downstream with respect to the hot combustion gas through portion's section, said rear edge part comprise from rear edge part radially inwardly/outward extending rail, said motor also comprise support and cooling unit to be used for the supporting portion section and the direct cooled fluid comes the cooling part section; This device is placed in said platform inner radial/outside, and this device comprises the vibrating part from this device radially outward/extend internally.

Background technique

Need to simplify this gas turbine engine.

Summary of the invention

According to the present invention; A kind of gas turbine engine is provided; It comprises that annular draws portion's section of guide vane assembly; This section is directed to hot combustion gas on the rotor blade of motor in the motor using process; This section comprise with respect to the spin axis of motor by radially inwardly/to the platform of the side that is placed on said section; Said platform has the mobile rear edge part that is in downstream with respect to the hot combustion gas through portion's section, said rear edge part comprise from rear edge part radially inwardly/outward extending rail, said motor also comprise support and cooling unit to be used for the supporting portion section and the direct cooled fluid comes the cooling part section; This device is placed in said platform inner radial/outside; This device comprises the vibrating part from this device radially outward/extend internally, and it is characterized in that said device comprises that also plate leaf Sealing and at least one keep pin, and said maintenance pin extends through said plate leaf Sealing, said rail and said vibrating part; Thereby (i) said section is fixed in the radial position of said device with definite said section, and (ii) keeps said plate leaf Sealing to be in the position of interface between said rail of sealing and the said vibrating part to stop cooling fluid to get into.

Description of drawings

Describe the present invention referring now to accompanying drawing through example, this accompanying drawing is to release for the figure according to the parts of gas turbine engine of the present invention.

Embodiment

With reference to accompanying drawing, the parts of gas turbine engine comprise that the annular of motor draws portion's section 1 of guide vane assembly, support and cooling unit 3 and rotor 5.The spin axis of motor is horizontal-extending and can be placed in shown in the figure below of part in the accompanying drawings.Rotor 5 comprises the rotor blade 9 with root of blade 7.Rotor 5 also comprises the rotor disk (not shown), and rotor blade 9 is fixed to this rotor disk by means of its rotor root 7.Portion's section 1 is directed to the hot combustion gas of advancing on the rotor blade 9 shown in arrow A among the figure.Can find out that accompanying drawing only shows the inner radial of portion's section 1 and the parts at rear, only show and support and the radially outer of cooling unit 3 and the parts at rear, and only show the inner radial that comprises its root of blade 7 of rotor blade 9 and the parts in the place ahead.

Portion's section 1 comprises draws guide vane 11 and at the platform 13 at the radially inner side place of portion's section 1.Portion's section 1 can also comprise that one or more additional draws guide vane 11 and at the platform of the radial outside of portion's section 1.All draw guide vane and are all radially radially extending between inner platform and the outer platform.Radially inner platform and outer platform will be arcuate form.The view of the portion's section 1 shown in the figure is observed along circumferential direction.

As known in the field, complete annular is drawn the guide vane assembly and is comprised and be arranged to encircle or a plurality of the sections 1 of annular.Therefore, in the accompanying drawings, the plane of annular is perpendicular to the vertical plane of paper plane, has portion's section 1, its contiguous and as shown in the figure below the paper plane with above (promptly along circumferential direction) extend continuously with portion's section 1.

Platform 13 has the rear edge part 15 that is in downstream with respect to the mobile A of the hot combustion gas through portion's section 1.Hinder marginal part section 15 comprises rail 17, and it is from part 15, radially extending radially inwardly to the face 19 of interior orientation from platform 13.

Rail 17 is illustrated as the bottom at accompanying drawing in perspective view.In this perspective view, rail 17 than its in the accompanying drawings the top orientation be inverted.Rail 17 extends along the final rear tip 21 that rear edge part 15 is parallel to part 15.Therefore, rail 17 circumferentially extends to ground in motor.Circumferential lengths/the degree of rail 17 is basic identical in the circumferential lengths/degree of platform 13.Though the rail 17 that illustrates is straight in stereogram; But in fact its crooked slightly so that its pedestal 22 radially is syntople location (platform 13 also be certainly bending slightly so that circumferentially extend and have radius, as known in the art) to the face 19 of interior orientation along its length and platform 13.The height of rail 17 is different along its length, and rail 17 is included in the convex portion 23 and the depression between part 23 25 of each end.Part 23 comprises hole 27.Depression 25 makes the rail 17 easy bendings with the bending of platform 13.

Rear edge part 15 comprises passage 28, and it is at the directed face 30 of radially outward that radially extends to platform 13 to the face 19 of interior orientation from platform 13 of downstream direction roughly.

Support and cooling unit 3 supporting portion sections 1 and direct cooled fluid are with cooling part section 1.Device 3 is positioned at platform 13 inner radial.Device 3 comprise load-carrying ring 29, sheet metal leaf Sealing 31, two keep pin 33 (one of them only is shown in the drawings) and cooling plates 35.

Load-carrying ring 29 comprises vibrating part, and it comprises main flange and time flange 37,39, and said main flange and time flange 37,39 extend radially outwardly from load-carrying ring 29.Thereby the thickness of comparing time flange 39 with main flange 37 has reduced to produce around recessed regional 41 of the periphery extension of load-carrying ring 29.The load-carrying ring 29 that comprises its flange 37,39 is centered on the spin axis of motor.In the accompanying drawings, the plane of load-carrying ring 29 is perpendicular to the vertical plane of paper plane.

Plate leaf Sealing 31 extend in the paper with paper outside, and have the rail 17 essentially identical length with portion section 1.

Keep pin 33 to extend through plate leaf Sealing 31, afterwards through the hole 27 in the convex portion 23 of rail 17, and in the hole 43 in the inferior flange 39 of entering afterwards (position of the hole 43 in the inferior flange 39 is corresponding to the hole 27 in the rail 17).Pin 33 have with rail 17 and time flange 39 in interference fit/interference fit of one, and have with rail 17 and time flange 39 in another person's the ratio interference fit drive fit of pine slightly.Pin 33 has cooperating of pine relatively with plate leaf Sealing 31.

Cooling plate 35 be placed in just platform 13 radially below the face 19 of interior orientation and in parallel, thereby be formed on the cooling channel 45 between plate 35 and the face 19.Portion's section 1 comprises the additional rail (not shown) parallel with rail 17, and its leading edge portion (not shown) from platform 13 extends radially inwardly.The upstream extremity (not shown) that the downstream of cooling plate 35 is positioned at rail 17 and plate is positioned at said additional rail.Cooling plate 35 comprises a plurality of cooling holes 47.

Cooling fluid is supplied at the upper reaches of main flange and inferior flange 37 and 39, rail 17, plate leaf Sealing 31 and maintenance pin 33, is present in the chamber 49 between load-carrying ring 29 and the portion's section 1.Form the directed jet of radially outward of cooling fluid through the cooling hole in the cooling plate 35 47.These impinging jets and chill station 13 radially to the face 19 of interior orientation.Some cooling fluids in the cooling channel 45 are advanced shown in arrow B and are arrived the inside of drawing guide vane 11 through platform 13, thereby and some cooling fluids via the parts of the directed face 30 of the radially outward of overlay film cooling (film cool) platform 13 of advancing of the passages 28 in the rear edge part 15 at the downstream part of the outlet of leaving passage 28.In addition, cooling fluid is supplied to the zone 51 between load-carrying ring 29 and the rotor blade 9, like the arrow C indication.This fluid is roughly upwards advanced in the drawings and is combined to leave the fluid of passage 28.

Keep pin 33 that dual functions is arranged: they (i) thus portion's section 1 is fixed to the radial position that load-carrying ring 29 is confirmed portion's sections 1, and (ii) retaining plate leaf Sealing 31 be in sealing rail 17 and flange 37, the interface between 39 53 with stop cooling fluid from the chamber 49 positions that get into.Keep this dual functions of pin 33 parts to simplify the form that engages between portion's section 1 and support and the cooling unit 3.In addition, advantageously, plate leaf Sealing 31 has been realized the sealing at interface 53 and can not increased the rigidity of platform 13 significantly.

Rail 17 41 extends along the recessed district of extending circumferentially, and the face 55 of the directed upstream of rail 17 is positioned at the face 57 of the directed upstream of main flange 37 and flushes (being in same level).Surface plate leaf Sealing 31 is positioned to against the face that flushes 55 and 57 and bridge joint rail 17 and flange 37, interface 53 between 39.The face 59 in the sensing downstream of rail 17 is relative with the face 61 of the directed upstream of time flange 39.

The diameter of the hole 43 in the hole 27 in the rail 17 and time flange 39 is corresponding to the diameter of the axle that keeps pin 33, and therefore hole 27,43 is formed the circumferential position of not only confirming radius but also definite portion section 1.Allow the circumferential position of adjusting portion section 1 if desired, then this can be through making in the rail 17 and/or holes 27,43 in the inferior flanges 39 comprise that the groove of extending circumferentially realizes.Radially can being determined of portion's section 1 with circumferential position; And there is not the Zhou Xiangre of constriction section 1 to increase; This realizes through following characteristic: keep the relevant holes 27,43 in the pin 33 to have diameter with two corresponding to the diameter of the axle that keeps pin, and with two grooves that keep relevant arbitrary of in the pin 33 another or two holes 27,43 to comprise extending circumferentially.

Foregoing description relates to the platform that annular is drawn portion's section of guide vane assembly, and wherein this platform is placed in the radially inner side of said section.Be to be appreciated that the present invention also can be used to draw about annular the platform of portion's section of guide vane assembly, wherein this platform is placed in the radial outside of said section.This example can be following: the support and the cooling unit that (a) are similar to device 3 will be positioned at the platform radially outer and will comprise the flange that is similar to flange 37,39; Said flange extends radially inwardly from said device, and (b) rear edge part of platform will comprise the rail that extends radially outwardly from rear edge part that is similar to rail 17.

Foregoing description relates to portion's section that annular is drawn the guide vane assembly, thereby wherein a plurality of sections are configured to ring or annular and constitute complete annular and draw the guide vane assembly.Should be appreciated that under limited situation, portion's section can be that complete annular is drawn the guide vane assembly, wherein only need portion's section to construct complete annular and draw the guide vane assembly that promptly complete annular is drawn the guide vane assembly and is made up of the only portion's section that itself is whole ring or annular.

Claims

1. gas turbine engine; Comprise: annular is drawn portion's section (1) of guide vane assembly; This section (1) is directed to hot combustion gas on the rotor blade (9) of motor in said motor using process; Said section (1) comprise with respect to the spin axis of motor by radially inwardly/outwards be arranged at the platform (13) of the side of said section (1); Said platform (13) has the mobile rear edge part (15) that is in downstream with respect to the hot combustion gas through said section (1); Said rear edge part (15) comprise from said rear edge part (15) radially inwardly/outward extending rail (17); Said motor also comprise support and cooling unit (3) to be used to supporting said section (1) and the direct cooled fluid cools off said section (1); Said device (3) is positioned at the inner radial/outside of said platform (13); Said device (3) comprises the vibrating part (37,39) from said device (3) radially outward/extend internally; It is characterized in that: said device (3) comprises that also plate leaf Sealing (31) and at least one keep pin (33); Said maintenance pin (33) extends through said plate leaf Sealing (31), said rail (17) and said vibrating part (37,39), thereby (i) said section (1) is fixed to the radial position of said device (3) with definite said section (1), and (ii) keeps said plate leaf Sealing (31) to be in the position that the interface (53) between sealing said rail (17) and the said vibrating part (37,39) stops cooling fluid to get into.

2. motor according to claim 1; Wherein said platform (13) radially inwardly is arranged at the side of said section (1) with respect to the said spin axis of said motor; Said rail (17) extends radially inwardly from said rear edge part (15); Said device (3) is positioned at the inner radial of said platform (13), and said vibrating part (37,39) extends radially outwardly from said device (3).

3. motor according to claim 2 wherein exists two or more to keep pin (33).

4. according to claim 2 or the described motor of claim 3; Wherein said maintenance pin (33) extends through the hole (27,43) in said rail (17) and the vibrating part (37,39), and described hole (27,43) is formed the circumferential position of confirming said section (1).

5. according to claim 2 or the described motor of claim 3, wherein said maintenance pin (33) extends through the groove of the extending circumferentially in said rail (17) and/or the vibrating part (37,39), thereby allows to regulate the circumferential position of said section (1).

6. according to any described motor of claim in the claim 2 to 5; Wherein said device (3) comprises the load-carrying ring (29) on the said spin axis that is centered in said motor; Said vibrating part (37,39) comprises main flange (37) and time flange (39) that extends radially outwardly from said load-carrying ring (29); Said flange (39) compared with said main flange (37) has the thickness that reduces; Thereby produce the recessed district (41) of extending around the periphery of said load-carrying ring (29), said rail (17) extends along the recessed district (41) of said extending circumferentially.

7. motor according to claim 6; The face (57) of the basic directed upstream with said main flange (37) of the face (55) of the directed upstream of wherein said rail (17) is positioned at same level, and said plate leaf Sealing (31) is plane form and is positioned to against the face (55,57) of the said directed upstream of said rail (17) and main flange (37) and the interface (53) between the said rail of bridge joint (17) and said main flange and the inferior flange (37,39).

8. according to claim 6 or the described motor of claim 7; Wherein said device (3) comprises chamber (49); Said cooling fluid is fed into this chamber (49), and said chamber (49) are positioned between said load-carrying ring (29) and said the section (1) at the upper reaches of said main flange and time flange (37,39), said rail (17), said plate leaf Sealing (31) and said maintenance pin (33).

9. motor according to claim 8; Wherein said rear edge part (15) comprises first passage (28); The radially outward directed face (30) that radially to the face (19) of interior orientation extend to said platform (13) of this first passage (28) along downstream direction roughly from said platform (13), the cooling fluid that in said motor using process, supplies to said chamber (49) get into said first passage (28), downstream direction roughly along said first passage (28) advance and leave said first passage (28) thus overlay film cools off the parts of the directed face (30) of said radially outward at the outlet downstream part that leaves said first passage (28).

10. motor according to claim 9; Wherein said device (3) comprises cooling plate (35); This cooling plate (35) is configured to be close to and is parallel to said radially to the face (19) of interior orientation; Thereby at said cooling plate (35) with saidly radially between the face (19) of interior orientation, form second channel (45); Said cooling plate (35) comprises a plurality of cooling holes (47); Form the directed jet of radially outward of cooling fluid by the cooling fluid that supplies to said chamber (49) cooling off hole (47) described in the said motor using process, said jet collision and cool off saidly radially to the face (19) of interior orientation gets into said first passage (28) from the cooling fluid of said second channel (45).

11. motor according to claim 2; Wherein exist two to keep pin (33); Said rail (17) is included in the convex portion (23) of each end and the depression (25) between said convex portion (23); And each convex portion (23) comprises hole (27), and said two keep corresponding one in the pin (33) to extend through this hole (27).