CN204609952U - Insert the inserting member of the air flue of stator blade, stator blade device and gas turbine - Google Patents
Insert the inserting member of the air flue of stator blade, stator blade device and gas turbine Download PDFInfo
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- CN204609952U CN204609952U CN201520176518.0U CN201520176518U CN204609952U CN 204609952 U CN204609952 U CN 204609952U CN 201520176518 U CN201520176518 U CN 201520176518U CN 204609952 U CN204609952 U CN 204609952U
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- blade body
- air
- air flue
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Abstract
The utility model provides a kind of inserting member, stator blade device and the gas turbine of inserting the air flue of stator blade.Stator blade is formed from outboard shroud via the blade body air flue (80) that guard shield is through to the inside.Inserting member (100) has: large cylinder portion (101), what it extended at air flue (80) inserts the upper extension in direction (Di), one end (105) is given prominence to from outboard shroud, and the other end (106) are positioned at air flue (80); Little cylinder portion (111), it is inserting the upper extension in direction (Di), and an end (115) are communicated with large cylinder portion (101), and the other end (116) give prominence to from inner side guard shield.Be formed with the air inlet (107) internally importing air in an end (105) of large cylinder portion (101), be formed between an end (105) and the other end (106) of large cylinder portion (101) to the Air blowing mouth (108) inserting crisscross (Dcr) blow out air that direction (Di) intersects.The air outlet slit (117) that air is flowed out is formed in the other end (116) of little cylinder portion (111).
Description
Technical field
The utility model relate to a kind of insert the air flue be formed in stator blade inserting member, possess the stator blade device of this inserting member and stator blade and possess the gas turbine of stator blade device.
Background technique
Gas turbine possesses the rotor rotated centered by axis, the housing covering this rotor.Rotor has rotor shaft, the multiple moving vanes be arranged on this rotor shaft.In addition, the inner side of housing is provided with multiple stator blade.
Stator blade has: relative to the blade body that the radial direction of axis extends, be arranged on the inner side guard shield of the radially inner side of blade body, be arranged on the outboard shroud of the radial outside of blade body.The blade body of stator blade is configured in the combustion gas stream that passes through for combustion gas.The position of the radially inner side of combustion gas stream delimited by inner side guard shield.Outboard shroud delimit the position of the radial outside of combustion gas stream.
The stator blade of gas turbine is exposed in the combustion gas of high temperature.Therefore, such as, in the stator blade described in following patent documentation 1, be formed with the air flue passed through for cooling-air.
Patent documentation 1: Japan Patent No. 2580356 publication
In the gas turbine, multipairly greatly to detect by the space of radially inner side and the temperature of chamber compared with the inner side guard shield of stator blade, and with this temperature for the mode below set point of temperature manages.Therefore, expect to become below set point of temperature with making the temperature stabilization of chamber.In addition, in the gas turbine, also expect effectively to cool stator blade thus the durability of raising stator blade, and reduce the use amount of the air for cooling this stator blade as much as possible.
Model utility content
[problem that model utility will solve]
Therefore, the purpose of this utility model is that providing a kind of can suppress the high temperature of chamber temp and while improving the durability of stator blade, suppress the technology of the use amount of the air of cooling.
[for solving the means of problem]
Inserting member as a mode of the model utility for realizing described object inserts the air flue of the stator blade in gas turbine, described air flue is through to the inner side guard shield of described stator blade via the blade body of described stator blade from outboard shroud, described inserting member has: large cylinder portion, its described air flue extend insert on direction extend and be formed as tubular, a described end of inserting on direction is given prominence to from described outboard shroud, described in the other end of inserting on direction be positioned at described air flue, little cylinder portion, its described insert on direction extend and be formed as tubular, a described end of inserting on direction is connected to described large cylinder portion thus is communicated with described large cylinder portion, described the other end of inserting on direction is given prominence to from described inner side guard shield, a described end in described large cylinder portion is formed with the air inlet internally importing air, between a described end and described the other end in described large cylinder portion, be formed by flow into described large cylinder portion air to the described Air blowing mouth inserting the crisscross blowout that direction intersects, the described the other end in described little cylinder portion is formed the air outlet slit flowed out for the air flowing into described large cylinder portion, the flow path area in described large cylinder portion is all large than the flow path area at described the other end place in described little cylinder portion in described arbitrary position of inserting on direction.
A part for cooling-air in the space of the radial outside of outboard shroud flows in the large cylinder portion of inserting member from the air inlet of this inserting member.Flow into a part for the cooling-air in the large cylinder portion of inserting member from the Air blowing mouth in this large cylinder portion to crisscross blowout.The path forming surface of this cooling-air to the air flue of delimiting stator blade carries out impinging cooling.Thus, in this inserting member, easily carried out impinging cooling, therefore, it is possible to effectively cool stator blade by the part heated from inner side to stator blade.In addition, the part flowing into the cooling-air in the large cylinder portion of this inserting member flows out from the air outlet slit of this inserting member via the little cylinder portion of this inserting member in chamber.Thus, in this inserting member, the temperature of chamber can be reduced.
Here, in described inserting member, can take following mode, that is, have lip part, described lip part from the described end in described large cylinder portion to described crisscross outstanding, and limits the movement of described inserting member to described inner side shroud.
In this inserting member, can make to stablize relative to the relative position of stator blade.
Have described lip part in described inserting member, can take following mode, that is, described lip part has the pressure surface side flange portion outstanding to the pressure surface side of described blade body, the suction surface side flange portion outstanding to the suction surface side of described blade body.
In addition, in above arbitrary described inserting member, following mode can be taked, namely, there is isolation part, described isolation part from the position except a described end in described large cylinder portion to described crisscross outstanding, and to connect with the path forming surface of described stator blade of delimiting described air flue in described large cylinder portion.
In this inserting member, the interval between the path forming surface of the stator blade of delimitation air flue can be kept constant.
In the described inserting member with described isolation part, can take following mode, that is, described isolation part has: the first isolation part being formed in a described tip side in described large cylinder portion with described Air blowing mouth for benchmark; Be formed in the second isolation part of the side, described the other end in described large cylinder portion for benchmark with described Air blowing mouth.
In this inserting member, can by Air blowing mouth and delimit air flue stator blade path forming surface between interval keep constant.
In addition, in above arbitrary described inserting member, following mode can be taked, namely, length dimension on the direction of the arch camber line along described blade body of the opening in the described outboard shroud of described air flue is larger than the length dimension on the vane thickness direction of described blade body, and the length dimension on the direction of the arch camber line along described blade body in described large cylinder portion is larger than the length dimension on the vane thickness direction of described blade body.
Stator blade device as a mode of the model utility for realizing described object possesses: above arbitrary described inserting member; The described stator blade of described inserting member is inserted in described air flue.
Here, in described stator blade device, can take following mode, that is, possess: thermometer, it detects the temperature and chamber temp that to be positioned at the space of the opposition side of described blade body with described inner side guard shield for benchmark; Protective tube; it covers around described thermometer; described stator blade has multiple described blade body; described protective tube is inserted through the described air flue in the blade body be formed in multiple described blade body, and described inserting member is inserted through the described air flue in the whole described blade body except a described blade body be formed in multiple described blade body.
In the described stator blade device possessing described thermometer and described protective tube, following mode can be taked, namely, described protective tube has: large cylinder portion, its described insert on direction extend and be formed as tubular, a described end of inserting on direction is given prominence to from described outboard shroud, described in the other end of inserting on direction be positioned at described air flue; Little cylinder portion; its described insert on direction extend and be formed as tubular and be inserted through in the described large cylinder portion of described protective tube; describedly insert the end on direction and give prominence to from the described end in the described large cylinder portion of described protective tube; described the other end of inserting on direction is given prominence to from described inner side guard shield, and the described large cylinder portion of described protective tube has the shape identical with the described large cylinder portion of described inserting member and identical size.
In this stator blade device, the parts in the large cylinder portion forming protective tube and the communization of the parts in the large cylinder portion of formation inserting member can be realized.
Gas turbine as a mode of the model utility for realizing described object possesses: above arbitrary described stator blade device; Turbine rotor, it has and by the moving vane of the contacts combustion gases between the described outboard shroud of described stator blade device and described inner side guard shield; Turbine shroud, it covers described turbine rotor, and is fixed with described stator blade.
[model utility effect]
According to a mode of the present utility model, can the high temperature of chamber temp suppressed and while improving the durability of stator blade, suppress the use amount of the air of cooling.
Accompanying drawing explanation
Fig. 1 is the schematic sectional view of the gas turbine in a mode of execution of the present utility model.
Fig. 2 is the stereogram of the stator blade in a mode of execution of the present utility model.
Fig. 3 is the III direction view of Fig. 2.
Fig. 4 is the IV direction view of Fig. 2.
Fig. 5 is the sectional view of the stator blade in a mode of execution of the present utility model.
Fig. 6 is the stereogram of the inserting member in a mode of execution of the present utility model.
Description of reference numerals
10: gas turbine, 11: gas turbine rotor, 15: gas turbine housing, 20: compressor, 21: compressor drum, 25: compressor housing, 30: burner, 40: turbine, 41: turbine rotor, 42: rotor shaft, 43: moving vane arranges, 44: moving vane, 45: turbine shroud, 46: stator blade arranges, 49: combustion gas stream, 50: stator blade, 51: blade body, 52: front edge, 53: hinder marginal part, 54: suction surface, 55: pressure surface, 60: inner side guard shield, 61: inner side boot main body, 62f: front-end face, 62b: ear end face, 63p: malleation side end face, 63n: suction side end face, 64: gas passes through face, 65: inner side surface, 70: outboard shroud, 71: outboard shroud main body, 72f: front-end face, 72b: ear end face, 73p: malleation side end face, 73n: suction side end face, 74: gas passes through face, 75: outer side surface, 80: air flue, 80a: the first air flue, 80b: the second air flue, 80c: the three air flue, 81: path mouth, 82: opening, 83: blade face ejection path, 85: lid, 85a: the first lid, 85b: the second lid, 86a: protective tube inserts opening, 86b: inserting member inserts opening, 87: air flows out opening, 100: inserting member, 101: large cylinder portion, 105: one ends, 106: the other end, 107: air inlet, 108: Air blowing mouth, 111: little cylinder portion, 113: pipe portion, 114: joint, 115: one ends, 116: the other end, 117: air outlet slit, 118: lip part, 118p: pressure surface side flange portion, 118n: suction surface side flange portion, 119: isolation part, 119a: the first isolation part, 119b: the second isolation part, 120: thermometer, 130: protective tube, 131: large cylinder portion, 132: one ends, 133: the other end, 135: little cylinder portion, 136: one ends, 137: the other end, Da: axially, Dau: upstream side, Dad: downstream side, Dc: circumference, Dcr: crisscross, Dr: radial, Dri: radially inner side, Dro: radial outside, Di: insert direction, A: air, Ac: cooling-air, C: chamber, G: combustion gas, CL: arch camber line
Embodiment
Below, with reference to accompanying drawing, a mode of execution of the present utility model and its variation are described in detail.
As shown in Figure 1, the gas turbine 10 of present embodiment possesses: compressed-air actuated compressor 20, to make in the air A of fuel after being compressed by compressor 20 burning and generate the burner 30 of combustion gas G, the turbine 40 by combustion gases drive.
Compressor 20 has the compressor drum 21 rotated centered by axis Ar, the compressor housing 25, the multiple stator blade row 26 that cover compressor drum 21.Turbine 40 has the turbine rotor 41 rotated centered by axis Ar, the turbine shroud 45, the multiple stator blade row 46 that cover turbine rotor 41.
Compressor drum 21 and turbine rotor 41 are positioned on same axis Ar, and are interconnected and form gas turbine rotor 11.This gas turbine rotor 11 is connected with the rotor of such as generator GEN.In addition, compressor housing 25 and turbine shroud 45 are interconnected and form gas turbine housing 15.It should be noted that, below, the direction that axis Ar extends is set to axial Da, by the circumference centered by this axis Ar referred to as circumferential Dc, the direction vertical with axis Ar is set to radial Dr.In addition, compressor 20 side is set to upstream side Dau with turbine 40 for benchmark by axial Da, its opposition side is set to downstream side Dad.In addition, the side close to axis Ar is set to radially inner side Dri by radial Dr, its opposition side is set to radial outside Dro.
Compressor drum 21 has the rotor shaft 22 extended on axial Da centered by axis Ar, the multiple moving vane row 23 be arranged on this rotor shaft 22.Multiple moving vane row 23 arrange at axial Da.Each moving vane row 23 are formed by the multiple moving vanes 24 arranged on circumferential Dc.Stator blade row 26 are configured with at each downstream side Dad of multiple moving vane row 23.Each stator blade row 26 are arranged on the inner side of compressor housing 25.Each stator blade row 26 are formed by the multiple stator blades 27 arranged on circumferential Dc.
Turbine rotor 41 has the rotor shaft 42 extended on axial Da centered by axis Ar, the multiple moving vane row 43 be arranged on this rotor shaft 42.Multiple moving vane row 43 arrange on axial Da.Each moving vane row 43 are formed by the multiple moving vanes 44 arranged on circumferential Dc.Stator blade row 46 are configured with at each upstream side Dau of multiple moving vane row 43.Each stator blade row 46 are arranged on the inner side of turbine shroud 45.Each stator blade row 46 are formed by the multiple stator blades 50 arranged on circumferential Dc.
Between the outer circumferential side of rotor shaft 42 and the inner circumferential side of turbine shroud 45 and the space being configured with the ring-type of stator blade 50 and moving vane 44 on axial Da forms the combustion gas stream 49 flowed for the combustion gas G from burner 30.This combustion gas stream 49 forms ring-type centered by axis Ar, and longer on axial Da.
The gas turbine 10 of present embodiment also possesses cooling-air circuit 19, and this cooling-air circuit 19 to be pumped in compressor housing 25 by the air that compresses using as cooling-air Ac, and is imported to the stator blade 50 of turbine by this cooling-air Ac.Stator blade 50 is cooled by the cooling-air Ac from this cooling-air circuit 19.
As shown in Fig. 2 ~ Fig. 5, stator blade 50 has: the multiple blade bodies 51 extended on radial Dr, be formed in blade body 51 radially inner side Dri inner side guard shield 60, be formed in the outboard shroud 70 of the radial outside Dro of blade body 51.Multiple blade body 51 circumferentially Dc is arranged in the combustion gas stream 49 passed through for combustion gas G.The position of the radially inner side Dri of the combustion gas stream 49 of ring-type delimited by inner side guard shield 60.In addition, outboard shroud 70 delimit the position of the radial outside Dro of the combustion gas stream 49 of ring-type.It should be noted that, like this, for an outboard shroud 70 and an inner side guard shield 60, sometimes the structure being provided with multiple blade body 51 is called stator blade part, here referred to as stator blade 50.
With regard to blade body 51, the end of upstream side Dau forms front edge 52, and the end of downstream side Dad forms hinder marginal part 53.In the surface of this blade body 51, the face towards the convex in the face of circumferential Dc forms suction surface 54 (with reference to Fig. 3 and Fig. 4), and the face of concavity forms pressure surface 55 (with reference to Fig. 3 and Fig. 4).
Outboard shroud 70 has: on axial Da and circumferential Dc along the outboard shroud main body 71 of the tabular of exhibition, from foot 76, the rear feet 77 outstanding from the downstream side part outboard shroud main body 71 towards radial outside Dro before the upstream side part outboard shroud main body 71 is given prominence to towards radial outside Dro.
Outboard shroud main body 71 is formed: the ear end face 72b of the front-end face 72f as the end face of upstream side Dau, the end face as downstream side Dad, the malleation side end face 73p (with reference to Fig. 3 and Fig. 4) as the end face of the pressure surface side of blade body 51, the suction side end face 73n (with reference to Fig. 3 and Fig. 4) as the end face of the suction surface side of blade body 51, towards the gas of radially inner side Dri by face 74, outer side surface 75 towards radial outside Dro.Front-end face 72f and ear end face 72b is almost parallel.In addition, malleation side end face 73p and suction side end face 73n is almost parallel.Thus, outboard shroud main body 71 parallelogram shape when observing from radial Dr.
The front foot 76 of outboard shroud 70 extends on circumferential Dc along the front-end face 72f of outboard shroud main body 71.In addition, the rear feet 77 of outboard shroud 70 extends on circumferential Dc along the ear end face 72b of outboard shroud main body 71.The front foot 76 of outboard shroud 70 and rear feet 77 all play effect stator blade 50 being installed on turbine shroud 45 (with reference to Fig. 1).
Inner side guard shield 60 has: on axial Da and circumferential Dc along the inner side boot main body 61 of the tabular of exhibition, from foot 66, the rear feet 67 outstanding from the downstream side part inner side boot main body 61 towards radially inner side Dri before the upstream side part inner side boot main body 61 is given prominence to towards radially inner side Dri.
Inner side boot main body 61 is formed: the ear end face 62b of the front-end face 62f as the end face of upstream side Dau, the end face as downstream side Dad, the malleation side end face 63p (with reference to Fig. 3 and Fig. 4) as the end face of the pressure surface side of blade body 51, the suction side end face 63n (with reference to Fig. 3 and Fig. 4) as the end face of the suction surface side of blade body 51, towards the gas of radially inner side Dri by face 64, inner side surface 65 towards radial outside Dro.Front-end face 62f and ear end face 62b is almost parallel.In addition, malleation side end face 63p and suction side end face 63n is almost parallel.Thus, inner side boot main body 61 parallelogram shape when observing from radial Dr.
The front foot 66 of inner side guard shield 60 extends on circumferential Dc along the front-end face 62f of inner side boot main body 61.In addition, the rear feet 67 of inner side guard shield 60 extends on circumferential Dc along the ear end face 62b of inner side boot main body 61.The front foot 66 of inner side guard shield 60 and rear feet 67 all play the effect that will be arranged on the seal ring sealed between stator blade 50 and rotor shaft 42 (with reference to Fig. 1) on stator blade 50.Be cavity C by the space of radial outside Dro by radially inner side Dri and compared with the outer circumferential face of rotor shaft 42 compared with guard shield inside this 60.
In stator blade 50, for each blade body 51 in multiple blade body 51, in blade body 51, outboard shroud 70 and inner side guard shield 60, be formed with the multiple air flues 80 extended on the direction with radial composition.Each air flue 80 is all formed in the mode being connected to inner side guard shield 60 from outboard shroud 70 via blade body 51.Multiple air flue 80 is along arch camber line CL (with reference to Fig. 3) arrangement of blade body 51.A part for adjacent air flue 80 is interconnected in the part of radial outside Dro or the part place of radially inner side Dri.In addition, either party outer side surface 75 opening in outboard shroud 70 in multiple air flue 80, and at inner side surface 65 opening of inner side guard shield 60.That is, at the air flue 80 of the outer side surface 75 of outboard shroud 70 and inner side surface 65 opening of inner side guard shield 60 from the radial outside Dro of outboard shroud 70 via the through radially inner side Dri to inner side guard shield 60 of blade body 51.
In the stator blade 50 of present embodiment, three air flues 80 are formed with for a blade body 51.First air flue 80a of the side, most upstream in three air flues 80 (with reference to Fig. 5) from the radial outside Dro of outboard shroud 70 via the through radially inner side Dri to inner side guard shield 60 of blade body 51.Thus, the outer side surface 75 of the first air flue 80a in outboard shroud 70 and inner side surface 65 opening of inner side guard shield 60.The second air flue 80b through inner side guard shield 60 adjacent with the downstream side of the first air flue 80a.Thus, the second air flue 80b is at inner side surface 65 opening of inner side guard shield 60.The opening of the second air flue 80b in the inner side surface 65 of inner side guard shield 60 similarly becomes to be integrated with the opening of the first air flue 80a in the inner side surface 65 of inner side guard shield 60, and forms an opening 82.Further, this second air flue 80b is communicated with the first air flue 80a at the part place of radially inner side Dri.The 3rd air flue 80c adjoined with the downstream side of the second air flue 80b is communicated with the second air flue 80b at the part place of radial outside Dro.The opening 81 of outboard shroud 70 side of the first air flue 80a, in the first air flue 80a, plays function as the cooling-air Ac of the radial outside Dro being present in outboard shroud 70 being directed into inner path mouth.Therefore, below the opening 81 of outboard shroud 70 side of the first air flue 80a is set to path mouth 81.Length dimension on the direction of the arch camber line CL along blade body 51 of this path mouth 81 is greater than the length dimension on the vane thickness direction of blade body 51.
Blade body 51 is also formed: spray paths 83 from the first air flue 80a to multiple blade faces that combustion gas stream 49 is through, spray paths 83 from the 3rd air flue 80c to multiple blade faces that combustion gas stream 49 is through.It should be noted that, on blade body 51, as required, also can be formed and spray paths from the second air flue 80b to multiple blade faces that combustion gas stream 49 is through.
In first air flue 80a of a blade body 51 in multiple blade body 51, insert the thermometer 120 (with reference to Fig. 2) that the protected pipe 130 in periphery covers.In addition, in the first air flue 80a of other blade bodies 51 except a blade body 51 in multiple blade body 51, inserting member 100 has been inserted.Opening 82 tegmentum 85 (with reference to Fig. 3 ~ Fig. 5) of the first air flue 80a in each blade body 51 and inner side guard shield 60 side of the second air flue 80b is partially enclosed.
As shown in figs.5 and 6, inserting member 100 have first air flue 80a extend insert on the Di of direction extend and tubular large cylinder portion 101 and little cylinder portion 111.With regard to large cylinder portion 101, an end 105 of inserting on the Di of direction is given prominence to from radial outside Dro from the outer side surface 75 of outboard shroud 70, and the other end 106 of inserting on the Di of direction is positioned at the first air flue 80a.With regard to little cylinder portion 111, an end 115 of inserting on the Di of direction is connected to large cylinder portion 101 and is communicated with large cylinder portion 101, and it is outstanding to radially inner side Dri from the inner side surface 65 of inner side guard shield 60 to insert the other end 116 on the Di of direction.
An end 105 in large cylinder portion 101 is formed the air inlet 107 internally importing cooling-air Ac.Between an end 105 and the other end 106 in large cylinder portion 101, be formed with Air blowing mouth 108, this Air blowing mouth 108 by the cooling-air Ac flowing into large cylinder portion 101 to insert the crisscross Dcr that direction Di intersects and blow out.The other end 116 in little cylinder portion 111 is formed the air outlet slit 117 of being discharged by the cooling-air Ac flowing into large cylinder portion 101.
Here, the crisscross Dcr in present embodiment refers to, as shown in Figure 3, has circumferential Dc composition and the direction vertical with the arch camber line CL of blade body 51 and vane thickness direction in the face vertical with inserting direction Di.
As shown in figs.5 and 6, large cylinder portion 101 is formed as having: pair of end walls 102 mutually opposing on the direction of the arch camber line CL along blade body 51, pair of sidewalls 103 mutually opposing on the crisscross Dcr vertical with arch camber line CL.Thus, large cylinder portion 101 is in square tube shape.The sidewall 103 in above-mentioned Air blowing mouth 108 through toward the outer side large cylinder portion 101 from the inner side in large cylinder portion 101.
The flow path area in large cylinder portion 101 is to insert the arbitrary position on the Di of direction all large than the flow path area at the other end 116 place in little cylinder portion 111.In other words, the flow path area of the other end 116 in little cylinder portion 111 is less than the flow path area in large cylinder portion 101.This is that a part of cooling-air Ac owing to flowing into from the air inlet 107 in large cylinder portion 101 blows out from the Air blowing mouth 108 in large cylinder portion 101 and in little cylinder portion 111, is only provided with the part of the cooling-air Ac flowing into large cylinder portion 101.Large cylinder portion 101 is identical with the path mouth 81 of the first air flue 80a, larger than the length dimension on crisscross Dcr (the vane thickness direction of=blade body 51) along the length dimension on the direction of the arch camber line CL of blade body 51.That is, the size of space of the pair of end walls 102 in large cylinder portion 101 is larger than the size of space of pair of sidewalls 103.But large cylinder portion 101 is less than the ratio of the length dimension on the crisscross Dcr in large cylinder portion 101 relative to the length dimension on the crisscross Dcr of the path mouth 81 of the first air flue 80a along the length dimension on the direction of arch camber line CL relative to the ratio along the length dimension on the direction of arch camber line CL of the path mouth 81 of the first air flue 80a.Therefore, with regard to the gap size between the path mouth 81 of the first air flue 80a and the outer circumferential face in large cylinder portion 101, the gap size along the direction of arch camber line CL is larger than the gap size in vane thickness direction.
Little cylinder portion 111 has: form the end 115 in little cylinder portion 111 and the joint 114 be connected with the other end 106 in large cylinder portion 101, the pipe portion 113 of tubular of the part except an end 115 that forms little cylinder portion 111.The pipe portion 113 of present embodiment is formed as the square tube shape using the direction of the arch camber line CL along blade body 51 as long limit.Length dimension on the length dimension in the direction of the arch camber line CL along blade body 51 in pipe portion 113 and crisscross Dcr is all little than the correspondingly-sized in large cylinder portion 101.The flow path area of the joint 114 in little cylinder portion 111 is identical with the flow path area in large cylinder portion 101 with the intersection in large cylinder portion 101, and diminish gradually, consistent with the flow path area in pipe portion 113 with the intersection in pipe portion 113 along with close to pipe portion 113 inserting on the Di of direction.
Inserting member 100 also has: lip part 118, and it is outstanding to crisscross Dcr from an end 105 in large cylinder portion 101, and limits the movement of this inserting member 100 to radially inner side Dri; Isolation part 119, outstanding to crisscross Dcr the position between its end 105 from large cylinder portion 101 and the other end 106, and connect with the path forming surface of the stator blade 50 of delimitation first air flue 80a.
As shown in Fig. 3 and Fig. 6, lip part 118 has: to crisscross Dcr and the outstanding pressure surface side flange portion 118p in the pressure surface side of blade body 51, to crisscross Dcr and the outstanding suction surface side flange portion 118n in the suction surface side of blade body 51.Pressure surface side flange portion 118p is formed on the sidewall 103p of pressure surface side in the pair of sidewalls 103 of the part forming large cylinder portion 101, blade body 51.In addition, suction surface side flange portion 118n is formed on the sidewall 103n of suction surface side in the pair of sidewalls 103 of the part forming large cylinder portion 101, blade body 51.It should be noted that, the pair of end walls 102 of another part forming large cylinder portion 101 does not form lip part 118.Pressure surface side flange portion 118p and suction surface side flange portion 118n all by welding joint on the outer side surface 75 of outboard shroud 70.
As shown in figs.5 and 6, isolation part 119 has: to be formed in the first isolation part 119a of a side, end 105 in large cylinder portion 101 for benchmark with Air blowing mouth 108, to be formed in the second isolation part 119b of the side, the other end 106 in large cylinder portion 101 with Air blowing mouth 108 for benchmark.First isolation part 119a and the second isolation part 119b is all identical with Air blowing mouth 108, is formed in the pair of sidewalls 103 of the part forming large cylinder portion 101.
As shown in Figure 2, protective tube 130 is identical with inserting member 100, has and extends and tubular large cylinder portion 131 and little cylinder portion 135 inserting on the Di of direction of the first air flue 80a extension.With regard to large cylinder portion 131, an end 132 of inserting on the Di of direction is given prominence to from radial outside Dro from the outer side surface 75 of outboard shroud 70, and the other end 133 of inserting on the Di of direction is positioned at the first air flue 80a.This large cylinder portion 131 has with large cylinder portion 101 same shape of inserting member 100 and has same size.In addition, in this large cylinder portion 131, identical with the large cylinder portion 101 of inserting member 100, be formed with air inlet, Air blowing mouth, lip part and isolation part.Thereby, it is possible to realize the parts in the large cylinder portion 131 forming protective tube 130 and the communization of the parts in the large cylinder portion 101 of formation inserting member 100.With regard to little cylinder portion 135, one end 136 of inserting on the Di of direction is identical with large cylinder portion 131 outstanding to radial outside Dro from the outer side surface 75 of outboard shroud 70, and it is outstanding to radially inner side Dri from the inner side surface 65 of inner side guard shield 60 to insert the other end 137 on the Di of direction.Should little cylinder portion 135, its part is inserted in large cylinder portion 131, and engages with the other end 133 in large cylinder portion 131.A part for one end 136 in this little cylinder portion 135 is outstanding to radial outside Dro from an end 132 in large cylinder portion 131.Little cylinder portion 135 is different from the little cylinder portion 111 of inserting member 100, is formed as tubulose throughout the entirety of inserting direction Di.
In the present embodiment, thermometer 120 is electroheat pair.This thermometer 120 in bar-shaped, and is inserted through the little cylinder portion 135 of protective tube 130.The little cylinder portion 135 of protective tube 130 can use the parts identical with the pipe portion 113 in the little cylinder portion 111 of inserting member 100, also can use the pipe of the internal diameter matched with the external diameter of thermometer 120.
As shown in Fig. 2 and Fig. 4, lid 85 has: the second lid 85b blocking the first lid 85a, the first air flue 80a of other blade bodies 51 except a blade body 51 blocked in multiple blade body 51 of the opening 82 of the first air flue 80a of a blade body 51 in multiple blade body 51 and inner side guard shield 60 side of the second air flue 80b and the opening 82 of inner side guard shield 60 side of the second air flue 80b.
First lid 85a is formed the protective tube supplying the little cylinder portion 135 of protective tube 130 seamlessly to insert and inserts opening 86a, multiple air outflow opening 87.Second lid 85b is formed with the inserting member supplying the pipe portion 113 of inserting member 100 seamlessly to insert and inserts opening 86b, multiple air outflow opening 87.First lid 85a and second lid 85b all by welding joint on the inner side surface 65 of inner side guard shield 60.The part flowing into the cooling-air Ac in the first air flue 80a flows out opening 87 from multiple air of each lid 85 and flows out in cavity C.Multiple air of each lid 85 flow out the effect that opening 87 plays the flow limiting the cooling-air Ac flowed out in cavity C.
In the present embodiment, stator blade device is formed by stator blade 50 described above, inserting member 100, thermometer 120, this protective tube 130, lid 85.
In the present embodiment, the cooling-air Ac pumped out from compressor 20 is directed into the space of the radial outside Dro of outboard shroud 70 by cooling-air circuit 19 (with reference to Fig. 1).As shown in Figure 5, each blade body 51 place of a part in multiple blade body 51 of this cooling-air Ac flows in the first air flue 80a from the path mouth 81 of the first air flue 80a, and flows towards radially inner side Dri.
Cooled in the process that part in blade body 51 around first air flue 80a flows at cooling-air Ac in the first air flue 80a.The part flowing into the cooling-air Ac in the first air flue 80a sprays in combustion gas stream 49 via blade face ejection path 83.Therefore, the part around blade body 51 middle period unilateral ejection path 83 is cooled in the process of cooling-air Ac flowing in this blade face ejection path 83.Further, from the surface of the part part covering blade body 51 of the cooling-air Ac that flows out to combustion gas stream 49 of blade face ejection path 83 thus the effect also played as film-air.
The part arriving the cooling-air Ac of the part of inner side guard shield 60 side of the first air flue 80a flows out opening 87 from the air of lid 85 and flows out in cavity C.In addition, the remaining part arriving the cooling-air Ac of the part of inner side guard shield 60 side of the first air flue 80a flows in the second air flue 80b, flows towards radial outside Dro.Cooled in the process that part in blade body 51 around second air flue 80b flows at cooling-air Ac in the second air flue 80b.The cooling-air Ac arriving the part of outboard shroud 70 side of the second air flue 80b flows in the 3rd air flue 80c, flows towards radially inner side Dri.Cooled in the process that part in blade body 51 around the 3rd air flue 80c flows at cooling-air Ac in the 3rd air flue 80c.The part flowing into the cooling-air Ac in the 3rd air flue 80c sprays in combustion gas stream 49 via blade face ejection path 83.Therefore, the part around blade body 51 middle period unilateral ejection path 83 is cooled in the process of cooling-air Ac flowing in this blade face ejection path 83.Further, from the surface of the part part covering blade body 51 of the cooling-air Ac that flows out to combustion gas stream 49 of blade face ejection path 83 thus the effect also played as film-air.
The part being imported into the cooling-air Ac in the space of the radial outside Dro of outboard shroud 70 flows in the large cylinder portion 101 of inserting member 100 from the air inlet 107 of inserting member 100.The part flowing into the cooling-air Ac in large cylinder portion 101 blows out in the first air flue 80a from Air blowing mouth 108, carries out impinging cooling to the path forming surface of the first air flue 80a delimiting blade body 51.The isolation part 119 of inserting member 100 by Air blowing mouth 108 and delimit blade body 51 the first air flue 80a path forming surface between distance maintaining be interval specify, thus realize the function of the impinging cooling effect of the cooling-air Ac improved from Air blowing mouth 108 blowout.
Be the part that easy burned gas G heats with the anastomosis part of outboard shroud 70 in blade body 51.Therefore, in the present embodiment, by from inner side in blade body 51 and outboard shroud 70 anastomosis part near carry out impinging cooling, thus improve the cooling capacity near this anastomosis part.
The part flowing into the cooling-air Ac in the large cylinder portion 101 of inserting member 100 flows out from the air outlet slit 117 of inserting member 100 via the little cylinder portion 111 of inserting member 100 in cavity C.Flow in the first air flue 80a from the path mouth 81 of the first air flue 80a and flow out from the air of lid 85 the cooling-air Ac that opening 87 flows out in cavity C, being to be heated gradually because of the heat exchange with blade body 51 in the process flowed in the first air flue 80a.Because the cooling-air Ac of flowing in inserting member 100 does not mix with the cooling-air Ac flowed in the first air flue 80a, therefore low by the temperature of the cooling-air Ac of the first air flue 80a at the temperature ratio in the moment of flowing out in cavity C.Thus, to insert in the first air flue 80a by making inserting member 100 and cooling-air Ac is flowed in this inserting member 100, the temperature of cavity C can be made to decline.
The part being directed into the cooling-air Ac in the space of the radial outside Dro of outboard shroud 70 flows in the large cylinder portion 131 of protective tube 130 from the air inlet of protective tube 130.The part of the cooling-air Ac flowed in large cylinder portion 131 blows out in the first air flue 80a from Air blowing mouth, and carries out impinging cooling to the path forming surface of the first air flue 80a delimiting blade body 51.
Above, in the present embodiment, owing to using the part of the cooling-air Ac flowing into inserting member 100 easily to be carried out impinging cooling by the part heated from inner side to stator blade 50, therefore, it is possible to effectively cool stator blade 50.In addition, in the present embodiment, by making a part for the air of inflow air flue 80 flow into inserting member 100, via this inserting member 100, cooling-air Ac is transported in cavity C, therefore, it is possible to make the temperature of cavity C reduce.
Therefore, according to the present embodiment, can use and the cooling-air not making inserting member 100 insert the equal flow of the situation of air flue 80, suppress the high temperature of chamber temp and improve the durability of stator blade 50.In other words, according to the present embodiment, inserting compared with the situation of air flue 80 with not making inserting member 100, the high temperature of chamber temp can be suppressed and the durability of stator blade 50 can be improved, the use amount of the air cooled can be suppressed in addition.
It should be noted that, above mode of execution is be applied to by the utility model to be provided with example in the stator blade 50 of multiple blade body 51 in an outboard shroud 70 and an inner side guard shield 60.But, also the utility model can be applied to and be provided with in the stator blade 50 of a blade body 51 in an outboard shroud 70 and an inner side guard shield 60.In this case, in the more than one stator blade 50 in multiple stator blade 50, inserting member 100 is set, protective tube 130 and thermometer 120 are set in remaining more than one stator blade 50.
In addition, in the above embodiment, inserting member 100, thermometer 120 and protective tube 130 are inserted in the first air flue 80a of the side, most upstream be formed in three air flues 80 of blade body 51.But, also inserting member 100, thermometer 120 and protective tube 130 can be inserted in other air flues 80b, the 80c be formed in three air flues 80 of blade body 51.
Industrial applicibility
According to a mode of the present utility model, can the high temperature of chamber temp suppressed and while improving the durability of stator blade, suppress the use amount of the air of cooling.
Claims (12)
1. an inserting member, it inserts the air flue of the stator blade in gas turbine, and described air flue is through to the inner side guard shield of described stator blade via the blade body of described stator blade from outboard shroud, and the feature of described inserting member is to have:
Large cylinder portion, its described air flue extend insert on direction extend and be formed as tubular, described in an end of inserting on direction give prominence to from described outboard shroud, described in the other end of inserting on direction be positioned at described air flue;
Little cylinder portion, it direction extends described inserting and is formed as tubular, described in an end of inserting on direction be connected to described large cylinder portion thus be communicated with described large cylinder portion, described in insert the other end on direction outstanding from described inner side guard shield,
A described end in described large cylinder portion is formed with the air inlet internally importing air, between a described end and described the other end in described large cylinder portion, be formed by flow into described large cylinder portion air to the described Air blowing mouth inserting the crisscross blowout that direction intersects, the described the other end in described little cylinder portion is formed the air outlet slit flowed out for the air flowing into described large cylinder portion
The flow path area in described large cylinder portion is all large than the flow path area at described the other end place in described little cylinder portion in described arbitrary position of inserting on direction.
2. inserting member according to claim 1, is characterized in that,
Have lip part, described lip part from the described end in described large cylinder portion to described crisscross outstanding, and limits the movement of described inserting member to described inner side shroud.
3. inserting member according to claim 2, is characterized in that,
Described lip part has the pressure surface side flange portion outstanding to the pressure surface side of described blade body, the suction surface side flange portion outstanding to the suction surface side of described blade body.
4. inserting member according to any one of claim 1 to 3, is characterized in that,
Have isolation part, described isolation part from the position except a described end in described large cylinder portion to described crisscross outstanding, and to connect with the path forming surface of described stator blade of delimiting described air flue in described large cylinder portion.
5. inserting member according to claim 4, is characterized in that,
Described isolation part has: the first isolation part being formed in a described tip side in described large cylinder portion with described Air blowing mouth for benchmark; Be formed in the second isolation part of the side, described the other end in described large cylinder portion for benchmark with described Air blowing mouth.
6. inserting member according to any one of claim 1 to 3, is characterized in that,
Length dimension on the direction of the arch camber line along described blade body of the opening in the described outboard shroud of described air flue is larger than the length dimension on the vane thickness direction of described blade body,
Length dimension on the direction of the arch camber line along described blade body in described large cylinder portion is larger than the length dimension on the vane thickness direction of described blade body.
7. inserting member according to claim 4, is characterized in that,
Length dimension on the direction of the arch camber line along described blade body of the opening in the described outboard shroud of described air flue is larger than the length dimension on the vane thickness direction of described blade body,
Length dimension on the direction of the arch camber line along described blade body in described large cylinder portion is larger than the length dimension on the vane thickness direction of described blade body.
8. inserting member according to claim 5, is characterized in that,
Length dimension on the direction of the arch camber line along described blade body of the opening in the described outboard shroud of described air flue is larger than the length dimension on the vane thickness direction of described blade body,
Length dimension on the direction of the arch camber line along described blade body in described large cylinder portion is larger than the length dimension on the vane thickness direction of described blade body.
9. a stator blade device, is characterized in that, possesses:
Inserting member according to any one of claim 1 to 8;
The described stator blade of described inserting member is inserted in described air flue.
10. stator blade device according to claim 9, is characterized in that possessing:
Thermometer, it detects the temperature and chamber temp that to be positioned at the space of the opposition side of described blade body with described inner side guard shield for benchmark;
Protective tube, it covers around described thermometer,
Described stator blade has multiple described blade body,
Described protective tube is inserted through the described air flue in the blade body be formed in multiple described blade body,
Described inserting member is inserted through the described air flue in the whole described blade body except a described blade body be formed in multiple described blade body.
11. stator blade devices according to claim 10, is characterized in that,
Described protective tube has:
Large cylinder portion, its described insert on direction extend and be formed as tubular, described in an end of inserting on direction give prominence to from described outboard shroud, described in the other end of inserting on direction be positioned at described air flue;
Little cylinder portion; its described insert on direction extend and be formed as tubular and be inserted through in the described large cylinder portion of described protective tube; describedly insert the end on direction and give prominence to from the described end in the described large cylinder portion of described protective tube; described the other end of inserting on direction is given prominence to from described inner side guard shield
The described large cylinder portion of described protective tube has the shape identical with the described large cylinder portion of described inserting member and identical size.
12. 1 kinds of gas turbines, is characterized in that possessing:
Stator blade device according to any one of claim 9 to 11;
Turbine rotor, it has and by the moving vane of the contacts combustion gases between the described outboard shroud of described stator blade device and described inner side guard shield;
Turbine shroud, it covers described turbine rotor, and is fixed with described stator blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176518.0U CN204609952U (en) | 2015-03-26 | 2015-03-26 | Insert the inserting member of the air flue of stator blade, stator blade device and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176518.0U CN204609952U (en) | 2015-03-26 | 2015-03-26 | Insert the inserting member of the air flue of stator blade, stator blade device and gas turbine |
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| Publication Number | Publication Date |
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| CN204609952U true CN204609952U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520176518.0U Active CN204609952U (en) | 2015-03-26 | 2015-03-26 | Insert the inserting member of the air flue of stator blade, stator blade device and gas turbine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691576A (en) * | 2017-04-04 | 2018-10-23 | 通用电气波兰有限责任公司 | Turbogenerator and component used in it |
| CN110030045A (en) * | 2018-01-12 | 2019-07-19 | 通用电气公司 | Turbogenerator with annular chamber |
| CN111133173A (en) * | 2017-10-23 | 2020-05-08 | 三菱日立电力系统株式会社 | Gas turbine stator blade and gas turbine provided with same |
| CN112211677A (en) * | 2019-07-11 | 2021-01-12 | 三菱重工业株式会社 | Rotor blade and axial flow rotating machine provided with same |
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2015
- 2015-03-26 CN CN201520176518.0U patent/CN204609952U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691576A (en) * | 2017-04-04 | 2018-10-23 | 通用电气波兰有限责任公司 | Turbogenerator and component used in it |
| CN108691576B (en) * | 2017-04-04 | 2022-01-25 | 通用电气波兰有限责任公司 | Turbine engine and components for use therein |
| CN111133173A (en) * | 2017-10-23 | 2020-05-08 | 三菱日立电力系统株式会社 | Gas turbine stator blade and gas turbine provided with same |
| CN111133173B (en) * | 2017-10-23 | 2022-07-08 | 三菱重工业株式会社 | Gas turbine stator blade and gas turbine provided with same |
| CN110030045A (en) * | 2018-01-12 | 2019-07-19 | 通用电气公司 | Turbogenerator with annular chamber |
| US11280198B2 (en) | 2018-01-12 | 2022-03-22 | General Electric Company | Turbine engine with annular cavity |
| CN112211677A (en) * | 2019-07-11 | 2021-01-12 | 三菱重工业株式会社 | Rotor blade and axial flow rotating machine provided with same |
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