EP3420197A1 - Leitschaufel mit einem verbindungsrohr - Google Patents
Leitschaufel mit einem verbindungsrohrInfo
- Publication number
- EP3420197A1 EP3420197A1 EP17717143.6A EP17717143A EP3420197A1 EP 3420197 A1 EP3420197 A1 EP 3420197A1 EP 17717143 A EP17717143 A EP 17717143A EP 3420197 A1 EP3420197 A1 EP 3420197A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- connecting tube
- outer platform
- vane according
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
- F01D5/189—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall the insert having a tubular cross-section, e.g. airfoil shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/237—Brazing
Definitions
- the invention relates to a guide blade for a flow ⁇ machine, in particular gas turbine, with an outer ⁇ in accordance ⁇ mounted state outer platform, a protruding from the outer platform airfoil, which extends in a longitudinal direction and defines a cavity in its interior an inner platform disposed opposite to the outer platform and connected to the airfoil, and a connecting tube penetrating the cavity of the airfoil in the longitudinal direction, having its first free end inserted into a through hole formed in the inner platform and integral with the inner platform is connected and the second free end in a formed on the outer platform cooling fluid inlet opening spaced from the edge is arranged and protrudes from ⁇ ward of the outer platform.
- Turbomachines such as gas turbines are known in the prior art in different configurations and serve to thermal energy and Stromener ⁇ energy of a working fluid, in particular a hot gas in rotation tion energy to convert. They include a housing in which a flow channel extends in an axial direction. In the flow passage, a plurality of turbine stages are arranged one behind the other in the axial direction and spaced from each other.
- Each turbine stage includes a plurality of vanes which form a vane ring connected to the housing and favorably influence the flow direction of the working fluid.
- a vane usually comprises a platform which is arranged radially outwards in the intended mounted state of the vane.
- the vane includes an airfoil, which from the outer
- Platform protrudes and extends in a longitudinal direction. Furthermore, the vane on an inner platform, which is connected opposite to the outer platform with the Schau ⁇ felblatt. The vane ring is closed inwardly by a retaining ring in which the inner platforms of the vanes are held.
- each turbine stage includes a plurality of blades that form a rotor ring connected to a rotor centrally supported and passing through the housing in the axial direction.
- a rotor ring connected to a rotor centrally supported and passing through the housing in the axial direction.
- circumferential grooves are formed in which the retaining rings of Leit ⁇ blade rings are arranged.
- the flow channel of the turbomachine flows through a working fluid.
- the flow channel flowing through working ⁇ fluid is deflected by the guide vanes such that it flows onto the arranged behind the rotor blades and optimally subjected to a force.
- the torque imparted by the vanes causes the rotor to rotate.
- the rotational energy of the rotor can for example be converted by ei ⁇ nes generator into electrical energy.
- One way to increase the thermal capacity is to dissipate heat from the vane by means of a cooling fluid.
- a cavity is provided in its interior, which is flowed through by the cooling fluid.
- the retaining rings on the inner sides of the vane ⁇ wreaths are heated by flowing hot gas into the circumferential groove.
- a proven means for cooling a retaining ring is to form the retaining ring with a U-shaped cross section, whereby in the retaining ring a circumferential cooling fluid groove is created.
- Thisdefluidnut is supplied with cooling ⁇ fluid flowing out of the vanes through an opening provided in the inner platform outlet opening in theharifluidnut of the retaining ring.
- this cooling fluid has heatticiannom ⁇ men in the airfoil of the vane, which reduces the time available for the support ring cooling capacity.
- a higher cooling capacity of the cooling fluid in the holding ring can be through a special connecting tube (jumper tube) achieve, which penetrates the cavity of the airfoil to the managing ⁇ shovel in the longitudinal direction and through which largely unheated flowing the cooling fluid in a direct way and in theharifluidnut of the holding ring ,
- connecting tubes can have positioning means in their second free end region, which extend in opposite directions starting from the connecting tube and are supported on the pressure-side and the suction-side edge of the cooling fluid inlet opening.
- positioning means can be insufficient to provide a sufficiently reliable positioning with regard to strong operational vibrations of the turbomachine and thermal changes in length of the connecting pipe of the connecting tube in the cooling fluid inlet opening.
- a guide vane of the type mentioned which allows a simple and reliable positioning of the connecting tube in the cooling fluid inlet opening cost.
- This object is achieved by a guide vane of the type mentioned, in which at least one guide means is attached to the outer platform for guiding the connecting tube, that is designed and ordered to ⁇ that it to form a sliding seat, the connecting pipe in the case of a thermal Length change in the longitudinal direction leads.
- the invention is based on the consideration to provide on the outer platform guide means for guiding the connecting tube, which allow movement of the connecting tube due to thermal change in length, without endangering its positioning in the cooling fluid inlet opening.
- provided on the outer platform guide means may unlike provided on the connecting tube positioning the degrees of motion of the dung Verbin ⁇ pipe to the longitudinal direction of the vane restric ⁇ ken.
- the at least one guide means extends from the outer platform in the direction of the connecting tube and surrounds a portion of the connecting tube at least partially, in particular completely, leaving a game.
- a guide means holds the Verbin ⁇ extension tube relative to the outer platform, in particular with regard to the distance from the edge of thedefluideinlassöff- voltage in a predetermined position.
- the at least one guide means has a guide opening.
- This guide opening is penetrated by the connecting pipe or a portion of the connecting pipe, whereby the connecting pipe is held securely transversely to the longitudinal direction.
- at least one guide projection which extends in the longitudinal direction and engages through the guide opening of the at least one guide means is formed on the second free end of the connecting tube corresponding to the guide opening of the at least one guide means.
- the guide opening may have a smaller cross-sectional area than the connecting tube, which can also reduce the dimensions of the guide means. The smaller the dimensions of the guide means, the less the cooling fluid is prevented from entering the cooling fluid inlet port.
- the at least one guide projection is formed like a pin.
- the cross section of the guide projection perpendicular to the longitudinal direction may be round, square or rectangular, for example.
- two guide means are provided, which extend from opposite regions of the outer platform in the direction of the connecting tube and in particular face each other.
- the two guide means are formed as sheets, which are connected to the outer platform material ⁇ conclusively, in particular by welding or soldering are.
- Welded or soldered plates represent particularly inexpensive and easy to produce guide means.
- two guide projections can be arranged opposite one another and at a distance from one another on the connecting tube and can be encompassed by a respective guide means.
- the distance between the two whosvor- jumps in the range of 5 and 10 and is preferably 7.
- Such distances correspond to the diameters of conventional connecting pipes.
- the two guide means may be provided on the pressure side and on the suction side of the connection pipe.
- This arrangement allows particularly short guide means, which is associated with an improved vibration behavior of the guide means.
- the airfoil can have a circumferential wall.
- the connecting tube is arranged in the cavity spaced from the circumferential wall. In this way, a thermal bridge between the connecting pipe ⁇ and the hot peripheral wall of the airfoil is avoided and the cooling fluid flowing around the connecting pipe additionally provides for heat insulation.
- the cohesive connection between the connecting tube and the inner platform can be produced by welding or soldering.
- connection between the connecting tube and the inner platform is preferably fluid-tight. This prevents heated cooling fluid from escaping from the cavity into the retaining ring of the vane ring.
- Figure 1 is a partial perspective view of a vane according to one embodiment of the present invention.
- Figure 2 is a plan view of the guide vane shown in Figure 1 from the outside;
- Figure 3 is a partial perspective view of a connection ⁇ pipe of the vane shown in Figure 1;
- Figure 4 is a partial cross-sectional view of a flow ⁇ machine with vanes according to the embodiment shown in Figure 1;
- FIG. 5 is an enlarged detail view of the designated in Figure 4 by the reference V detail.
- Figures 1 to 3 show a guide blade 1 for a turbomachine, not shown, in particular a gas turbine according to an embodiment of the present invention.
- the guide vane 1 has an outer flat 2, which is arranged radially outwardly in accordance with ⁇ assembled according to the condition of the guide vane 1.
- the vane 1 includes an airfoil 3 extending in a longitudinal direction L and projecting from the outer platform 2.
- a cavity 4 is defined.
- the guide vane 1 to an inner platform 5, which is ge ⁇ genüberod disposed to the outer platform 2 and connected to the airfoil. 3
- the guide vane 1 comprises a connecting tube 6, which passes through the cavity 4 of the airfoil 3 in the longitudinal direction L.
- a first free end of the kausroh ⁇ res 6 is connected to the inner platform 5 by welding material fit and fluid-tight.
- the second free end of the Connecting pipe 6 is arranged in a formed on the outer platform 2 cooling fluid inlet opening 7 spaced from the edge 8 and projects outwardly from the outer plate ⁇ form 2.
- the guide means 9 are formed as sheets, which are arranged on the pressure side and the suction side of the blade ⁇ blade 3 and are connected to the outer platform 2 material ⁇ conclusively by welding.
- Each guide means 9 has a slot-shaped effetsöff ⁇ tion 10 to fully encompass a portion 11 of the connecting tube 6, leaving a game completely.
- a partial encompassing can alternatively also suffice.
- the two sections 11 are present provided ⁇ seen as extending in the longitudinal direction L of the guide projections 11 which are formed on the second free end of the connecting pipe 6 corresponding to the guide holes 10 and extend through the guide openings 10 of the two guide means.
- the guide projections 11 are guided displaceably in the guide means.
- the guide projections 11 are formed in a pin-like manner with a rectangular cross-section of ⁇ and opposite to each other and spaced from each other on the connecting pipe 6 arranged.
- the distance between the two guide projections 11 is about 7 mm.
- the airfoil 3 has a peripheral wall 12, to which the connecting pipe 6 is arranged in a spaced manner in the cavity 4.
- FIGS 4 and 5 show schematically a portion of a turbomachine with guide vanes according to the invention 1.
- the Turbomachine comprises a housing 13 in which a flow channel 14 extends in egg ⁇ ner axial direction A.
- Wei ⁇ terhin comprises the turbomachine a plurality of Turbi ⁇ nengen 15 each comprise a guide vane ring 16 and a rotor blade ring 17, wherein the turbine stages 15 in the flow channel 14 in the axial direction A in a row and are spaced apart from each other.
- the guide vane rings 15 are each formed from a plurality of he ⁇ inventive guide vanes 1 and each comprise a U-shaped retaining ring 18 with a circumferential cooling fluid groove 19, in which the inner platforms 5 of the vanes 1 are held.
- the flow channel 14 is flowed through by an expanding hot gas.
- the guide vanes of the vane rings 1 are 15 flows simultaneously a cooling fluid and cooled.
- a portion of the cooling fluid flows for cooling the Schaufelblat- tes 3 through the cooling fluid inlet opening 7 into the cavity 4, while another part of the cooling fluid for cooling the Hal ⁇ tekranzes 18 through the connecting pipe 6 directly, without it ⁇ warming contact with the peripheral wall 12 of the Blade 3 flows into the retaining ring 18.
- An advantage of the guide vane 1 according to the invention is that the connecting tube 6 can move in the longitudinal direction L in the guide openings 10 of the guide means 9 in the case of a thermally induced change in length, without leaving its position in the cooling fluid inlet opening 7 with respect to its edge 8. Beyond that festivalssokohei ⁇ th of the connecting tube 6 relative to the outer platform 2 are avoided by the attached to the outer platform 2 guide means 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16166430.5A EP3236009A1 (de) | 2016-04-21 | 2016-04-21 | Leitschaufel mit einem verbindungsrohr |
| PCT/EP2017/058628 WO2017182322A1 (de) | 2016-04-21 | 2017-04-11 | Leitschaufel mit einem verbindungsrohr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3420197A1 true EP3420197A1 (de) | 2019-01-02 |
| EP3420197B1 EP3420197B1 (de) | 2020-02-05 |
Family
ID=55802307
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16166430.5A Withdrawn EP3236009A1 (de) | 2016-04-21 | 2016-04-21 | Leitschaufel mit einem verbindungsrohr |
| EP17717143.6A Active EP3420197B1 (de) | 2016-04-21 | 2017-04-11 | Leitschaufel mit einem verbindungsrohr |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16166430.5A Withdrawn EP3236009A1 (de) | 2016-04-21 | 2016-04-21 | Leitschaufel mit einem verbindungsrohr |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10876414B2 (de) |
| EP (2) | EP3236009A1 (de) |
| JP (1) | JP6779310B2 (de) |
| CN (1) | CN109072700B (de) |
| WO (1) | WO2017182322A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3301527A (en) * | 1965-05-03 | 1967-01-31 | Gen Electric | Turbine diaphragm structure |
| US4288201A (en) | 1979-09-14 | 1981-09-08 | United Technologies Corporation | Vane cooling structure |
| FR2777318B1 (fr) * | 1998-04-09 | 2000-05-12 | Snecma | Procede de reduction du jeu existant entre une chemise et un distributeur de turbine d'un turboreacteur |
| JP2004028036A (ja) | 2002-06-28 | 2004-01-29 | Hitachi Ltd | ガスタービン静翼及びガスタービン |
| US6884023B2 (en) * | 2002-09-27 | 2005-04-26 | United Technologies Corporation | Integral swirl knife edge injection assembly |
| FR2851286B1 (fr) | 2003-02-18 | 2006-07-28 | Snecma Moteurs | Aubes de turbine refroidie a fuite d'air de refroidissement reduite |
| JP2012246785A (ja) * | 2011-05-25 | 2012-12-13 | Mitsubishi Heavy Ind Ltd | ガスタービン静翼 |
| US9617870B2 (en) * | 2013-02-05 | 2017-04-11 | United Technologies Corporation | Bracket for mounting a stator guide vane arrangement to a strut in a turbine engine |
| EP2964887B1 (de) * | 2013-03-08 | 2019-06-26 | Rolls-Royce North American Technologies, Inc. | Verfahren zur herstellung einer gasturbinen-verbundstoffschaufelanordnung und entsprechende schaufelanordnung |
| EP2840231A1 (de) * | 2013-08-23 | 2015-02-25 | Siemens Aktiengesellschaft | Turbinenschaufel mit einem hohlen Schaufelblatt |
| US9581028B1 (en) * | 2014-02-24 | 2017-02-28 | Florida Turbine Technologies, Inc. | Small turbine stator vane with impingement cooling insert |
| US9920869B2 (en) * | 2014-05-22 | 2018-03-20 | United Technologies Corporation | Cooling systems for gas turbine engine components |
-
2016
- 2016-04-21 EP EP16166430.5A patent/EP3236009A1/de not_active Withdrawn
-
2017
- 2017-04-11 WO PCT/EP2017/058628 patent/WO2017182322A1/de not_active Ceased
- 2017-04-11 CN CN201780024523.1A patent/CN109072700B/zh active Active
- 2017-04-11 EP EP17717143.6A patent/EP3420197B1/de active Active
- 2017-04-11 JP JP2018555205A patent/JP6779310B2/ja not_active Expired - Fee Related
- 2017-04-11 US US16/089,645 patent/US10876414B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20190120068A1 (en) | 2019-04-25 |
| EP3236009A1 (de) | 2017-10-25 |
| CN109072700B (zh) | 2021-01-29 |
| US10876414B2 (en) | 2020-12-29 |
| EP3420197B1 (de) | 2020-02-05 |
| JP6779310B2 (ja) | 2020-11-04 |
| JP2019516039A (ja) | 2019-06-13 |
| CN109072700A (zh) | 2018-12-21 |
| WO2017182322A1 (de) | 2017-10-26 |
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