EP1247602A1 - Verfahren zur Herstellung einer Turbinenschaufel - Google Patents
Verfahren zur Herstellung einer Turbinenschaufel Download PDFInfo
- Publication number
- EP1247602A1 EP1247602A1 EP01108480A EP01108480A EP1247602A1 EP 1247602 A1 EP1247602 A1 EP 1247602A1 EP 01108480 A EP01108480 A EP 01108480A EP 01108480 A EP01108480 A EP 01108480A EP 1247602 A1 EP1247602 A1 EP 1247602A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- blade
- spacers
- core
- turbine
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49336—Blade making
- Y10T29/49339—Hollow blade
Definitions
- the invention relates to a method for producing a Turbine blade in hollow profile.
- Gas turbines are used to drive generators in many areas or used by work machines.
- the Energy content of a fuel to generate a rotational movement a turbine shaft used.
- the fuel will To do this, burned in a combustion chamber, using an air compressor compressed air is supplied. That in the combustion chamber generated by the combustion of the fuel, under high Pressure and high temperature working medium is via a turbine unit downstream of the combustion chambers managed where it relaxes while working.
- the required to generate the rotational movement of the turbine shaft Impulse transfer from the working medium is over Turbine blades reached.
- These are on the turbine shaft a number of profiled blades arranged to guide the flow medium in the turbine unit guide vanes connected to the turbine housing added are. Point for a suitable guidance of the flow medium the turbine blades usually have a profiled, Blade extending along a blade axis.
- turbine blades are common in modern gas turbines designed as a so-called hollow profile.
- the airfoil also has an interior cavities referred to as blade core, in which a Coolant can be performed.
- Coolant channels is thus an act on the thermally particularly stressed areas of the respective Airfoil with coolant allows.
- a particularly cheap one Cooling effect and thus a particularly high level of operational reliability can be reached by the coolant channels comparatively large space inside the respective Take the airfoil, and by using the coolant if possible close to the respective surface exposed to the hot gas is led.
- adequate mechanical stability and resilience can ensure the respective turbine blade be flowed through multiple channels, being inside the blade profile a plurality of coolant-loaded from each other by comparatively thin partitions separate coolant channels are provided.
- Such turbine blades are usually made by casting manufactured. For this, one is contoured to the desired one Bucket profile adapted casting mold poured out with blade material.
- For the manufacture of the aforementioned blade cores or Flow channels for the coolant are poured into the Casting mold so-called core elements arranged after the done Casting process are removed from the blade body, so that the cavities desired for the coolant channels arise.
- core elements arranged after the done Casting process are removed from the blade body, so that the cavities desired for the coolant channels arise.
- the core elements are usually spacers connected to one another and / or to the casting mold.
- the spacers are common designed to be tapered, thus the formation safely excluded from unacceptably large openings.
- the Spacers are designed so that when casting the turbine blade should be a continuous one, if possible surface completely penetrated by the respective spacer or dividing wall at the respective point. Yet points the cast turbine blade at the locations of the Spacers usually have weak spots that at least promote local cracking in the area in question. The Error or reject rate in the manufacture of the turbine blades is therefore comparatively high.
- the invention is therefore based on the object of a method for the manufacture of a turbine blade in a hollow profile, with which a particularly low error or reject rate is achievable.
- This object is achieved by a first Core element over a number of approximately cylindrical spacers with a further core element and / or with a Casting mold is connected, the through the core elements in cavities left in the mold are poured out by shovel material and after the removal of the core elements and the spacer remaining in the turbine blade, openings created by the spacers Plug elements are closed.
- the invention is based on the consideration that a possible cause of error in the manufacture of the turbine blades can be seen in those weaknesses that due to the use of tapered spacers adjust when connecting the core elements.
- This Vulnerabilities affect the stability of the Bucket material at the point in question, but on the other hand difficult or at all during a material test not identifiable. This allows undetected vulnerabilities remain in the material, which later on due to cracking the location of the turbine blade failure can lead overall.
- the spacers are preferably in their longitudinal extent dimensioned such that their ends over the resulting Stand out blade profile so that when casting the turbine blade in any case completely through the respective structure through holes are created.
- the plug elements in an advantageous development compressed after being inserted into the respective opening. Such a compression ensures that the respective Plug element expands in its width in such a way that it is a particularly intimate positive and non-positive Connects with the edge of the respective opening. The opening is thus closed particularly effectively.
- a suitable pin-shaped can be used as the plug element Element can be used.
- each vulnerability in the Blade body is clearly identifiable. hidden Vulnerabilities are thus avoided.
- the spacers can also be dimensioned comparatively large be so that for reliable positioning the core elements during the casting process only a comparative one small number of spacers required is. This also reduces the total number that arise Openings or weak points, so that the effort particularly small when these vulnerabilities are closed again is held.
- the turbine blade 1 shown in cross section in FIG. 1 is for use in a gas turbine, not shown intended.
- the turbine blade 1 comprises a along a blade axis, also referred to as blade profile Blade 2.
- Blade 2 is as in Figure 1 is recognizable, profiled or on its surface curved, so that a particularly favorable guidance of the gas turbine flowing working medium is guaranteed.
- the gas turbine is for thermodynamic reasons Outlet temperature of your working fluid from the combustion chamber of comparatively high temperatures, for example 1200 ° C to 1300 ° C.
- Components also designed the turbine blade 1 coolable.
- the airfoil 2 comprises a number of integrated ones Cavities 4, 6, each as a flow channel for a coolant serve.
- the cavities 4 have a comparative large cross section and serve as the main flow path for the coolant. Especially when compared in cross-section large flow channels for the coolant is, however for mechanical stabilization a comparatively large wall thickness of the remaining structural parts of the turbine blade 1 required.
- second cavities 6 are provided, which are comparatively run just below the surface of the turbine surface 1. These second cavities 6 form secondary channels for the Coolant and communicate with the inlet and outlet first cavities 4.
- a mold In the manufacture of the turbine blade 1, a mold is used used the one to the desired outer contour of the turbine blade Has 1 adapted cavity. For the production the cavities 4, 6 are in this mold in their outer contour so-called adapted to the desired cavities 4 or 6 Core elements positioned. Then the mold poured out with shovel material, whereby through the core elements the intended cavities 4 and 6 of blade material be kept free. After the blade material has solidified the core elements are removed again, so that the desired cavities 4 and 6 in the cast turbine blade 1 remain.
- the core element 10 comprises a base plate 12, the shape of which to the desired contour is adapted for the respective cavity 6.
- a number of spacers 14 are arranged.
- Each spacer 14 is essentially cylindrical designed and trained in length so that he the blade profile provided in its area is complete penetrates.
- the spacers are 14 thus formed in length so that this the thickness of the material walls surrounding the respective cavity 6 exceeds. With their free ends are the spacers 14 each in the casting mold or in an adjacent one Anchored core element, so that even during the Casting process results in essentially stable structure.
- Figure 3 shows in the manner of several alternative embodiments a number of different plug elements, with which the openings left by the spacers 14 can be locked. It can be used as a plug element for the respective opening a drive pin 20 may be provided, the one in the middle like a barb includes conically shaped fitting 22. Alternatively, you can an impact pin 24 compressed on one side may be provided, which is particularly suitable in the event that the to be closed Opening on one side still the actual opening channel has limiting projections 26. If one is complete through opening, but can also be a through opening Pin 28 may be provided after its penetration was compressed on both sides in the respective opening. Just due to the upsetting occurs as a result of the arising Thickening in the middle of the pin 28 is a special one good sealing effect.
- the respective Opening has bevels in their end regions.
- the end of the pin 30 is compressed deformed, his pen material in the corresponding Inserts bevels of the respective openings.
- a pin 32 which in its end area by attaching a solder cap 34 and subsequent soldering is sealed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
- Figur 1
- eine profilierte Turbinenschaufel im Querschnitt,
- Figur 2
- ein Kernelement, und
- Figur 3
- eine Anzahl von Stopfenelementen in jeweils verschiedenartiger Ausführungsform.
Claims (5)
- Verfahren zur Herstellung einer Turbinenschaufel (1) in Hohlprofil, bei dem ein erstes Kernelement (10) über eine Anzahl annähernd zylindrischer Abstandhalter (14) mit einem weiteren Kernelement und/oder mit einer Gießform verbunden wird, wobei die durch die Kernelemente (10) in der Gießform gelassenen Hohlräume (4, 6) durch Schaufelmaterial ausgegossen werden, und bei dem die nach der Entfernung der Kernelemente (10) und der Abstandhalter (14) in der Turbinenschaufel (1) verbleibenden, durch die Abstandhalter (14) erzeugten Öffnungen durch Stopfenelemente verschlossen werden.
- Verfahren nach Anspruch 1, bei dem die Stopfelemente nach ihrem Einbringen in die jeweilige Öffnung gestaucht werden.
- Verfahren nach Anspruch 1 oder 2, bei dem die Stopfelemente nach ihrem Einbringen in die jeweilige Öffnung verlötet werden.
- Verfahren nach einem der Ansprüche 1 bis 3, bei dem als Stopfenelemente Blindnieten verwendet werden.
- Verfahren nach einem der Ansprüche 1 bis 3, bei dem als Stopfenelemente Einschlagpins (24) verwendet werden.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01108480A EP1247602B1 (de) | 2001-04-04 | 2001-04-04 | Verfahren zur Herstellung einer Turbinenschaufel |
DE50113629T DE50113629D1 (de) | 2001-04-04 | 2001-04-04 | Verfahren zur Herstellung einer Turbinenschaufel |
ES01108480T ES2301504T3 (es) | 2001-04-04 | 2001-04-04 | Procedimiento para producir un alabe de turbina. |
JP2002098225A JP2002349285A (ja) | 2001-04-04 | 2002-04-01 | タービン翼の製造方法 |
US10/117,633 US6739381B2 (en) | 2001-04-04 | 2002-04-04 | Method of producing a turbine blade |
CNB021054355A CN1250361C (zh) | 2001-04-04 | 2002-04-04 | 制造涡轮机叶片的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01108480A EP1247602B1 (de) | 2001-04-04 | 2001-04-04 | Verfahren zur Herstellung einer Turbinenschaufel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1247602A1 true EP1247602A1 (de) | 2002-10-09 |
EP1247602B1 EP1247602B1 (de) | 2008-02-20 |
Family
ID=8177048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01108480A Expired - Lifetime EP1247602B1 (de) | 2001-04-04 | 2001-04-04 | Verfahren zur Herstellung einer Turbinenschaufel |
Country Status (6)
Country | Link |
---|---|
US (1) | US6739381B2 (de) |
EP (1) | EP1247602B1 (de) |
JP (1) | JP2002349285A (de) |
CN (1) | CN1250361C (de) |
DE (1) | DE50113629D1 (de) |
ES (1) | ES2301504T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2335846A3 (de) * | 2006-12-14 | 2012-03-28 | United Technologies Corporation | Verfahren zur Gussformung von Versiegelungsschlitzen in Turbinenschaufelummantelungen |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100406630B1 (ko) * | 2001-03-13 | 2003-11-20 | 엘지전자 주식회사 | 데모용 데이터의 기록 및 재생방법과, 그에 따른 기록매체 |
DE10255346A1 (de) * | 2002-11-28 | 2004-06-09 | Alstom Technology Ltd | Verfahren zum Herstellen einer Turbinenschaufel |
US8137611B2 (en) * | 2005-03-17 | 2012-03-20 | Siemens Energy, Inc. | Processing method for solid core ceramic matrix composite airfoil |
US7306026B2 (en) * | 2005-09-01 | 2007-12-11 | United Technologies Corporation | Cooled turbine airfoils and methods of manufacture |
GB2430170B (en) * | 2005-09-15 | 2008-05-07 | Rolls Royce Plc | Method of forming a cast component |
CN100398232C (zh) * | 2005-11-01 | 2008-07-02 | 中国科学院金属研究所 | 一种具有双晶组织结构的整体涡轮的制备工艺 |
US20080005903A1 (en) * | 2006-07-05 | 2008-01-10 | United Technologies Corporation | External datum system and film hole positioning using core locating holes |
US7674093B2 (en) * | 2006-12-19 | 2010-03-09 | General Electric Company | Cluster bridged casting core |
US8366383B2 (en) * | 2007-11-13 | 2013-02-05 | United Technologies Corporation | Air sealing element |
US8083489B2 (en) * | 2009-04-16 | 2011-12-27 | United Technologies Corporation | Hybrid structure fan blade |
US8727714B2 (en) * | 2011-04-27 | 2014-05-20 | Siemens Energy, Inc. | Method of forming a multi-panel outer wall of a component for use in a gas turbine engine |
US10300526B2 (en) | 2014-02-28 | 2019-05-28 | United Technologies Corporation | Core assembly including studded spacer |
US10099275B2 (en) | 2014-04-07 | 2018-10-16 | United Technologies Corporation | Rib bumper system |
US10119405B2 (en) * | 2015-12-21 | 2018-11-06 | General Electric Company | Cooling circuit for a multi-wall blade |
US10053989B2 (en) * | 2015-12-21 | 2018-08-21 | General Electric Company | Cooling circuit for a multi-wall blade |
US20180238175A1 (en) * | 2017-02-21 | 2018-08-23 | General Electric Company | Method and Device for Retaining Position of a Consumable Core |
US11572796B2 (en) | 2020-04-17 | 2023-02-07 | Raytheon Technologies Corporation | Multi-material vane for a gas turbine engine |
US11795831B2 (en) | 2020-04-17 | 2023-10-24 | Rtx Corporation | Multi-material vane for a gas turbine engine |
US11945025B1 (en) | 2023-04-06 | 2024-04-02 | Rtx Corporation | Method of wall control in multi-wall investment casting |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2821323A (en) * | 1955-12-07 | 1958-01-28 | Lee Co | Pin plug |
DE4434139C1 (de) * | 1994-09-24 | 1995-08-31 | Ford Werke Ag | Gußteilform mit Gießkernabstützung und Gußteil mit Kernöffnungsverschluß |
WO1999059748A1 (de) * | 1998-05-14 | 1999-11-25 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur herstellung eines metallischen hohlkörpers |
EP1027943A1 (de) * | 1999-02-11 | 2000-08-16 | ABB Alstom Power (Schweiz) AG | Hohlgegossenes Bauteil und Verfahren zu dessen Herstellung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3761201A (en) * | 1969-04-23 | 1973-09-25 | Avco Corp | Hollow turbine blade having diffusion bonded therein |
US5111570A (en) * | 1990-08-10 | 1992-05-12 | United Technologies Corporation | Forge joining repair technique |
FR2695163B1 (fr) * | 1992-09-02 | 1994-10-28 | Snecma | Aube creuse pour turbomachine et son procédé de fabrication. |
KR20000052372A (ko) * | 1999-01-25 | 2000-08-25 | 제이 엘. 차스킨, 버나드 스나이더, 아더엠. 킹 | 인접한 냉각 통로를 연결하는 타원형 횡단 개구를 갖는가스 터빈 부품 |
US6370752B1 (en) * | 2000-04-21 | 2002-04-16 | General Electric Company | Method for repositioning or repairing holes |
-
2001
- 2001-04-04 DE DE50113629T patent/DE50113629D1/de not_active Expired - Lifetime
- 2001-04-04 ES ES01108480T patent/ES2301504T3/es not_active Expired - Lifetime
- 2001-04-04 EP EP01108480A patent/EP1247602B1/de not_active Expired - Lifetime
-
2002
- 2002-04-01 JP JP2002098225A patent/JP2002349285A/ja active Pending
- 2002-04-04 US US10/117,633 patent/US6739381B2/en not_active Expired - Lifetime
- 2002-04-04 CN CNB021054355A patent/CN1250361C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2821323A (en) * | 1955-12-07 | 1958-01-28 | Lee Co | Pin plug |
DE4434139C1 (de) * | 1994-09-24 | 1995-08-31 | Ford Werke Ag | Gußteilform mit Gießkernabstützung und Gußteil mit Kernöffnungsverschluß |
WO1999059748A1 (de) * | 1998-05-14 | 1999-11-25 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur herstellung eines metallischen hohlkörpers |
EP1027943A1 (de) * | 1999-02-11 | 2000-08-16 | ABB Alstom Power (Schweiz) AG | Hohlgegossenes Bauteil und Verfahren zu dessen Herstellung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2335846A3 (de) * | 2006-12-14 | 2012-03-28 | United Technologies Corporation | Verfahren zur Gussformung von Versiegelungsschlitzen in Turbinenschaufelummantelungen |
US8276649B2 (en) | 2006-12-14 | 2012-10-02 | United Technologies Corporation | Process to cast seal slots in turbine vane shrouds |
Also Published As
Publication number | Publication date |
---|---|
DE50113629D1 (de) | 2008-04-03 |
JP2002349285A (ja) | 2002-12-04 |
US6739381B2 (en) | 2004-05-25 |
CN1250361C (zh) | 2006-04-12 |
ES2301504T3 (es) | 2008-07-01 |
CN1378890A (zh) | 2002-11-13 |
US20020157251A1 (en) | 2002-10-31 |
EP1247602B1 (de) | 2008-02-20 |
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