CN102979584A - Cooling system for upper end wall of head stage guide vane of gas turbine - Google Patents
Cooling system for upper end wall of head stage guide vane of gas turbine Download PDFInfo
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- CN102979584A CN102979584A CN2012105197905A CN201210519790A CN102979584A CN 102979584 A CN102979584 A CN 102979584A CN 2012105197905 A CN2012105197905 A CN 2012105197905A CN 201210519790 A CN201210519790 A CN 201210519790A CN 102979584 A CN102979584 A CN 102979584A
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- end wall
- chopped
- head
- stator
- hole
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Abstract
The invention discloses a cooling system for the upper end wall of a head stage guide vane of a gas turbine, which relates to a cooling system for a head stage guide vane of a gas turbine and is used for solving the problems of oxidation and creep deformation damage caused by over high metal surface temperatures of the head stage guide vane of the gas turbine and the upper end wall. The guide vane is fixed between a head-stage guide vane upper end wall and a head-stage guide vane lower end wall; the cooling system comprises a shunting screen; the head-stage guide vane upper end wall is provided with a cooling groove which is consistent with the shape of the shunting screen; the shunting screen is placed over a cooling groove, and is fixedly connected with the upper surface of the head-stage guide vane upper end wall; the bottom surfaces of the shunting screen and the cooling groove are provided with through holes which are consistent with the cross section shape of a back sleeve; the through hole in the shunting screen is aligned with the through hole in the bottom surface of the cooling groove; the back sleeve passes through the through hole in the shunting screen and the through hole in the cooling groove, and is arranged in the guide vane; and the upper end of the back sleeve is fixedly connected with the through hole in the shunting screen. The cooling system can be widely applied to cooling of the upper end wall of the head stage guide vane of the gas turbine.
Description
Technical field
The present invention relates to a kind of cooling system that fires machine turbine chopped-off head stator.
Background technique
According to China energy industry structure as can be known, Natural Gas Resources in China is less, and coal resource is abundant.Abundant by the medium and low heat value fuel that coal refines, therefore it is particularly important to improve the heavy combustion engine performance that is applicable to medium and low heat value fuel, present middle lower calorific value heavy duty gas turbine turbine guide vane is directly exposed in the higher heat load environment, especially blade blade and up and down end wall cause blade to produce oxidation and creep occurs damaging easily under the long-term high heat load environment.
Summary of the invention
The problem that the present invention damages in order to solve the too high generation oxidation of combustion machine turbine chopped-off head stator and upper end wall metallic surface temperature and creep, thus a kind of combustion machine turbine chopped-off head stator upper end wall cooling structure is provided.
Combustion machine turbine chopped-off head stator upper end wall cooling system, it comprises chopped-off head stator upper end wall, stator and rear sleeve, and described stator is fixed between chopped-off head stator upper end wall and the chopped-off head stator lower end wall, and described cooling system also comprises the shunting screen;
Be processed with on the described chopped-off head stator upper end wall and shunt the consistent cooling bath of screen shape, the shunting screen is placed on directly over the cooling bath and is affixed with chopped-off head stator upper end wall upper surface;
All be processed with the through hole consistent with rear sleeve shape of cross section on the bottom surface of described shunting screen and cooling bath, and the through hole on the shunting screen and the lead to the hole site on the cooling bath bottom surface over against, through hole and the through hole on the cooling bath that rear sleeve passes on the shunting screen are arranged in the stator, and the upper end of rear sleeve is affixed with the through hole on the shunting screen;
The Kong Weihou sleeve that described cooling bath bottom surface upper rear set cylinder passes through passes through the hole.
Combustion machine turbine chopped-off head stator upper end wall cooling system of the present invention makes cold air obtain comprehensive utilization, the temperature of stator and chopped-off head stator upper end wall metal blade is effectively reduced, temperature has reduced 500-600k, has effectively avoided producing the high heat load environment and then reduced the stator blade producing the problem of oxidation and creep damage.
Description of drawings
Fig. 1 is that the master of combustion machine turbine chopped-off head stator upper end wall cooling system looks broken away view;
Fig. 2 is the rear view of combustion machine turbine chopped-off head stator upper end wall cooling system;
Fig. 3 is the side view of chopped-off head stator upper end wall structure;
Fig. 4 is the plan view of chopped-off head stator upper end wall structure;
Fig. 5 is the worm's eye view of chopped-off head stator upper end wall structure.
Embodiment
Embodiment one, in conjunction with Fig. 1-2 this embodiment is described.Combustion machine turbine chopped-off head stator upper end wall cooling system, it comprises chopped-off head stator upper end wall 1, stator 3 and rear sleeve 4, described stator 3 is fixed between chopped-off head stator upper end wall 1 and the chopped-off head stator lower end wall 13, it is characterized in that described cooling system also comprises shunting screen 2;
Be processed with on the described chopped-off head stator upper end wall 1 and shunt the consistent cooling bath 5 of screen 2 shapes, shunting screen 2 is placed on directly over the cooling bath 5 and is affixed with chopped-off head stator upper end wall 1 upper surface;
All be processed with the through hole consistent with rear sleeve 4 shape of cross sections on the bottom surface of described shunting screen 2 and cooling bath 5, and the through hole on the shunting screen 2 and the lead to the hole site on cooling bath 5 bottom surfaces over against, through hole and the through hole on the cooling bath 5 that rear sleeve 4 passes on the shunting screen 2 are arranged in the stator 3, and the upper end of rear sleeve 4 is affixed with the through hole on the shunting screen 2;
The Kong Weihou sleeve that described cooling bath 5 bottom surface upper rear set cylinders 4 pass through is by hole 7.
What embodiment two, this embodiment and embodiment one were different is that shunting screen 2 is provided with several impact openings 6, and described several impact openings 6 are distributed in the axis projection region exterior of stator 3 on shunting screen 2.
The number of described impact opening 6 is 24-32, and the aperture is 1.2-1.5mm.
This embodiment adopts impact opening 6 structures on the shunting screen 3, described impact opening 6 is scattered in 12 row along shunting screen leading edge direction to trailing edge direction, wherein the first row to the six every trade spacings equate, the 7th walks to the 12 every trade spacing equates that hole pitch equates in every row.
Embodiment three, in conjunction with this embodiment of Fig. 3-5 explanation, what this embodiment and embodiment one were different is that described chopped-off head stator upper end wall 1 trailing edge wall is provided with several trailing edge Cooling Holes 8; The number of described trailing edge Cooling Holes 8 is 24-32, and the aperture is 1.2mm-1.5mm.Other composition is identical with embodiment one with Placement.
The air inlet side of described turbine chopped-off head stator 3 is the leading edge of chopped-off head stator upper end wall 1, and the side of giving vent to anger of turbine chopped-off head stator 3 is the trailing edge of chopped-off head stator upper end wall 1.
Embodiment four, in conjunction with this embodiment of Fig. 3-5 explanation, what this embodiment and embodiment one were different is that described cooling bath 5 bottom surfaces are provided with several stator leading edge air film holes 9, described several stator leading edge air film holes 9 evenly distribute along stator 3 leading edges, and the outgassing direction of several stator leading edge air film holes 9 all is positioned on the leading edge of stator 3 and chopped-off head stator upper end wall 1 joint; The number of described stator leading edge air film hole 9 is 10-14, and the aperture is 1.2mm-1.5mm.Other composition is identical with embodiment one with Placement.
Embodiment five, in conjunction with this embodiment of Fig. 3-5 explanation, what this embodiment and embodiment one were different is that described cooling bath 5 bottom surfaces are provided with several cooling air fenestras 10.Described cooling air fenestra 10 is from chopped-off head stator upper end wall 1 leading edge to trailing edge direction 8 row that distribute, wherein the hole pitch of the first row and the second row is 0.365 ° of circumferential spacing, the hole pitch of the third line and fourth line is 0.3 ° of circumferential spacing, the hole pitch of fifth line and the 6th row is 0.5 ° of circumferential spacing, the hole pitch of the 7th row is 0.5 ° of circumferential spacing, and the hole pitch of the 8th row is 0.52 ° of circumferential spacing.Other composition is identical with embodiment one with Placement.
Embodiment six, in conjunction with this embodiment of Fig. 3-5 explanation, this embodiment and embodiment one are different is that the inner arc outer surface of described chopped-off head stator upper end wall 1 is provided with several inner arc side openings 11 between cooling bath 5 upper surfaces.The number of described inner arc side opening 11 is 6-10, and the aperture is 1.5mm-2mm.Other composition is identical with embodiment one with Placement.
Embodiment seven, in conjunction with this embodiment of Fig. 3-5 explanation, this embodiment and embodiment one are different, and to be described rear sleeve by hole 7 internal surfaces and chopped-off head stator upper end wall 1 carry on the back is provided with several between the arc side external surface and carries on the back arc side opening 12.Other composition is identical with embodiment one with Placement.
The present invention adopts combustion machine turbine chopped-off head stator upper end wall cooling system, chopped-off head stator upper end wall 1 is cooled off, avoided in the traditional design problem of, chopped-off head stator upper end wall 1 single for combustion machine turbine chopped-off head stator upper end wall cooling system form and the stator easy ablation in 3 blade places and structural failure.
Claims (7)
1. fire machine turbine chopped-off head stator upper end wall cooling system, it comprises chopped-off head stator upper end wall (1), stator (3) and rear sleeve (4), described stator (3) is fixed between chopped-off head stator upper end wall (1) and the chopped-off head stator lower end wall (13), it is characterized in that described cooling system also comprises shunting screen (2);
Described chopped-off head stator upper end wall (1) upper surface is processed with the cooling bath (5) consistent with shunting screen (2) shape, and shunting screen (2) is arranged on directly over the cooling bath (5) and is affixed with chopped-off head stator upper end wall (1) upper surface;
All be processed with the through hole consistent with rear sleeve (4) shape of cross section on the bottom surface of described shunting screen (2) and cooling bath (5), and the through hole on the shunting screen (2) and the lead to the hole site on cooling bath (5) bottom surface over against, through hole and the through hole on the cooling bath (5) that rear sleeve (4) passes on the shunting screen (2) are arranged in the stator (3), and the upper end of rear sleeve (4) is affixed with the through hole on the shunting screen (2);
The Kong Weihou sleeve that described cooling bath (5) bottom surface upper rear set cylinder (4) passes through is by hole (7).
2. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1, it is characterized in that described shunting screen (2) is provided with several impact openings (6), described several impact openings (6) are distributed in the axis projection region exterior of stator (3) on shunting screen (2).
3. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1 is characterized in that described chopped-off head stator upper end wall (1) trailing edge wall is provided with several trailing edge Cooling Holes (8).
4. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1, it is characterized in that described cooling bath (5) bottom surface is provided with several stator leading edge air film holes (9), described several stator leading edge air film holes (9) evenly distribute along stator (3) leading edge, and the outgassing direction of several stator leading edge air film holes (9) all is positioned on the leading edge of stator (3) and chopped-off head stator upper end wall (1) joint.
5. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1 is characterized in that described cooling bath (5) bottom surface is provided with several cooling air fenestras (10).
6. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1 is characterized in that the intrados of described chopped-off head stator upper end wall (1) is provided with several inner arc side openings (11) between cooling bath (5) upper surface.
7. combustion machine turbine chopped-off head stator upper end wall cooling system according to claim 1 is characterized in that described rear sleeve is by being provided with several back of the body arc side openings (12) between hole (7) internal surface and chopped-off head stator upper end wall (1) back of the body arc side external surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105197905A CN102979584A (en) | 2012-12-06 | 2012-12-06 | Cooling system for upper end wall of head stage guide vane of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105197905A CN102979584A (en) | 2012-12-06 | 2012-12-06 | Cooling system for upper end wall of head stage guide vane of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102979584A true CN102979584A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105197905A Pending CN102979584A (en) | 2012-12-06 | 2012-12-06 | Cooling system for upper end wall of head stage guide vane of gas turbine |
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| Country | Link |
|---|---|
| CN (1) | CN102979584A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2980360A1 (en) * | 2014-07-30 | 2016-02-03 | Rolls-Royce plc | Gas turbine engine end-wall component |
| CN111779548A (en) * | 2020-06-29 | 2020-10-16 | 西安交通大学 | End wall air film hole arrangement structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628880A (en) * | 1969-12-01 | 1971-12-21 | Gen Electric | Vane assembly and temperature control arrangement |
| US5743708A (en) * | 1994-08-23 | 1998-04-28 | General Electric Co. | Turbine stator vane segments having combined air and steam cooling circuits |
| US6019572A (en) * | 1998-08-06 | 2000-02-01 | Siemens Westinghouse Power Corporation | Gas turbine row #1 steam cooled vane |
| US6382906B1 (en) * | 2000-06-16 | 2002-05-07 | General Electric Company | Floating spoolie cup impingement baffle |
| CN102200034A (en) * | 2010-03-08 | 2011-09-28 | 通用电气公司 | Preferential cooling of gas turbine nozzles |
| CN202991147U (en) * | 2012-12-06 | 2013-06-12 | 哈尔滨汽轮机厂有限责任公司 | Cooling system for upper end wall of first stage guide vane of gas turbine |
-
2012
- 2012-12-06 CN CN2012105197905A patent/CN102979584A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628880A (en) * | 1969-12-01 | 1971-12-21 | Gen Electric | Vane assembly and temperature control arrangement |
| US5743708A (en) * | 1994-08-23 | 1998-04-28 | General Electric Co. | Turbine stator vane segments having combined air and steam cooling circuits |
| US6019572A (en) * | 1998-08-06 | 2000-02-01 | Siemens Westinghouse Power Corporation | Gas turbine row #1 steam cooled vane |
| US6382906B1 (en) * | 2000-06-16 | 2002-05-07 | General Electric Company | Floating spoolie cup impingement baffle |
| CN102200034A (en) * | 2010-03-08 | 2011-09-28 | 通用电气公司 | Preferential cooling of gas turbine nozzles |
| CN202991147U (en) * | 2012-12-06 | 2013-06-12 | 哈尔滨汽轮机厂有限责任公司 | Cooling system for upper end wall of first stage guide vane of gas turbine |
Non-Patent Citations (1)
| Title |
|---|
| 辛亚楠: "燃气涡轮复合冷却结构改进设计研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2980360A1 (en) * | 2014-07-30 | 2016-02-03 | Rolls-Royce plc | Gas turbine engine end-wall component |
| US9915169B2 (en) | 2014-07-30 | 2018-03-13 | Rolls-Royce Plc | Gas turbine engine end-wall component |
| CN111779548A (en) * | 2020-06-29 | 2020-10-16 | 西安交通大学 | End wall air film hole arrangement structure |
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Application publication date: 20130320 |