EP2898188A1 - Gasturbine mit einem wärmeflusssensor - Google Patents
Gasturbine mit einem wärmeflusssensorInfo
- Publication number
- EP2898188A1 EP2898188A1 EP13773199.8A EP13773199A EP2898188A1 EP 2898188 A1 EP2898188 A1 EP 2898188A1 EP 13773199 A EP13773199 A EP 13773199A EP 2898188 A1 EP2898188 A1 EP 2898188A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat flow
- gas turbine
- flow sensor
- component
- barrier layer
- 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.)
- Withdrawn
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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- 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
- F05D2240/00—Components
- F05D2240/35—Combustors or associated equipment
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
- F05D2270/3032—Temperature excessive temperatures, e.g. caused by overheating
-
- 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
- F05D2270/00—Control
- F05D2270/80—Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
Definitions
- the invention relates to a gas turbine with a heat flow sensor according to the preamble of patent claim 1.
- thermocouples In addition to the temperatures, heat flows through the thermal barrier layer of turbine components must also be monitored. For this purpose it is known to embed stacks of thermocouples in the barrier layer. From the measured temperatures at different depths of the barrier layer can then be closed on the heat flow through the barrier layer.
- Such a gas turbine comprises a heat flow sensor, which is arranged on a surface of a component of the gas turbine and designed as a thermocouple.
- the heat flow sensor is a transverse thermoelectric element.
- Transverse thermoelectric elements are based on the use of anisotropic thermoelectric materials whose sea-basin tensor has non-zero non-zero elements. This results in a voltage perpendicular to a temperature gradient acting on the thermoelectric element.
- the heat flow sensor consists of monocrystalline zinc oxide.
- Zinc oxide has an intrinsic anisotropy. Its thermoelectric properties can be applied by sputtering in monocrystalline form with given axial tilt and is stable under operating conditions of a gas turbine.
- thermoelectric element In order to determine the desired heat flow from the thermoelectric voltage, it is expedient to arrange the thermoelectric element so that the crystallographic c-axis of the Zinc oxide is tilted against a surface normal to the surface of the component.
- the heat flow sensor is preferably arranged below a thermal barrier layer of the component, so that it firstly enjoys the protection of the barrier layer and secondly that it can precisely detect the heat flow through the barrier layer. It is also expedient if an electrical insulating layer is arranged between the heat flow sensor and the surface of the component, so that the heat flow sensor is not short-circuited by the conductive surface of the component.
- FIG. 1 shows a schematic representation of the mode of operation of a transverse thermoelectric sensor
- FIG. 2 shows a schematic sectional view through the mounting region of a heat flow sensor in an embodiment of a gas turbine according to the invention.
- a transverse thermoelectric sensor 10 is made of a material having intrinsic anisotropy.
- the thermoelectric effect such as aluminum-doped monocrystalline zinc oxide, which is arranged so that the crystallographic c-axis is tilted with respect to a heat flow to be measured.
- the Sensor 10 adjusts itself a temperature gradient, which in turn causes a perpendicular to the heat flow potential difference, so that on the side surfaces 12, 14 of the sensor 10, a voltage can be tapped, which is proportional to the heat flow.
- thermal barrier layer 16 is applied via the sensor 10 and the connecting lines 24. This can be done, for example, by thermal spraying of a high-temperature-stable ceramic.
- the heat flow through the thermal barrier can be determined, taking into account the geometry of the sensor 10. Of particular importance in this case is the ratio between length and thickness of the sensor 10, since for a given heat flow, the thermal voltage also increases with increasing ratio.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012217535.0A DE102012217535A1 (de) | 2012-09-27 | 2012-09-27 | Gasturbine mit einem Wärmeflusssensor |
PCT/EP2013/070047 WO2014049041A1 (de) | 2012-09-27 | 2013-09-26 | Gasturbine mit einem wärmeflusssensor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2898188A1 true EP2898188A1 (de) | 2015-07-29 |
Family
ID=49303954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13773199.8A Withdrawn EP2898188A1 (de) | 2012-09-27 | 2013-09-26 | Gasturbine mit einem wärmeflusssensor |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150247418A1 (de) |
EP (1) | EP2898188A1 (de) |
JP (1) | JP2016500780A (de) |
CN (1) | CN104769230B (de) |
DE (1) | DE102012217535A1 (de) |
WO (1) | WO2014049041A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2970778B1 (fr) * | 2011-01-21 | 2015-08-07 | Commissariat Energie Atomique | Dispositif de mesure ou de determination d'une caracteristique d'un flux thermique echange entre un premier milieu et un deuxieme milieu |
GB2526856B (en) * | 2014-06-05 | 2018-11-21 | Lappeenranta Univ Of Technology | Thermal power measurement |
DE102022103004A1 (de) | 2021-02-16 | 2022-08-18 | Technische Universität Ilmenau, Körperschaft des öffentlichen Rechts | Anordnung zur direkten Messung von Wärmeströmen |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2000088C3 (de) * | 1970-01-02 | 1973-11-29 | Tschernowizkij Gosudarstwenny Uniwersitet, Tschernowiz (Sowjetunion) | Anisotropes Thermoelement |
GB1335303A (en) * | 1971-05-28 | 1973-10-24 | Chernovitsky G Uni | Thermoelement |
DE2213925C3 (de) * | 1972-03-22 | 1975-06-05 | Tschernowizkij Gosudarstwenny Uniwersitet, Tschernowiz (Sowjetunion) | Thermoelement |
US5404760A (en) * | 1993-10-27 | 1995-04-11 | Westinghouse Electric Corporation | Blade path thermocouple and exhaust gas extraction probe for combustion turbines |
US7690840B2 (en) * | 1999-12-22 | 2010-04-06 | Siemens Energy, Inc. | Method and apparatus for measuring on-line failure of turbine thermal barrier coatings |
US6807803B2 (en) * | 2002-12-06 | 2004-10-26 | General Electric Company | Gas turbine exhaust diffuser |
US8004423B2 (en) * | 2004-06-21 | 2011-08-23 | Siemens Energy, Inc. | Instrumented component for use in an operating environment |
JP2007243070A (ja) * | 2006-03-10 | 2007-09-20 | National Institute Of Advanced Industrial & Technology | 配向酸化亜鉛質熱電変換材料及びそれを用いた熱電変換デバイス |
WO2008097385A1 (en) * | 2006-10-18 | 2008-08-14 | The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations | Nano-composites for thermal barrier coatings and thermo-electric generators |
JP4819003B2 (ja) * | 2007-07-30 | 2011-11-16 | 住友重機械工業株式会社 | 射出成形機の監視装置 |
US8033722B2 (en) * | 2008-08-01 | 2011-10-11 | Siemens Energy, Inc. | Thermocouple for gas turbine environments |
US8662746B2 (en) * | 2008-08-01 | 2014-03-04 | Siemens, Energy Inc. | Turbine component instrumented to provide thermal measurements |
DE102008042888A1 (de) * | 2008-10-16 | 2010-04-22 | Robert Bosch Gmbh | Brennkraftmaschine mit Wärmestromsensor |
KR101093566B1 (ko) * | 2010-03-31 | 2011-12-13 | 성균관대학교산학협력단 | 초격자구조의 다성분계 산화물 박막제조방법 |
JP5707844B2 (ja) * | 2010-10-20 | 2015-04-30 | Jfeスチール株式会社 | 連続鋳造におけるブレークアウト検出方法及び装置 |
US8961007B2 (en) * | 2011-03-15 | 2015-02-24 | Siemens Energy, Inc. | Thermocouple and method of forming a thermocouple on a contoured gas turbine engine component |
EP2590238A3 (de) * | 2011-11-07 | 2014-09-24 | Oliver Hönigsberger | Vorrichtung, Verfahren zur Herstellung derselben sowie Verfahren zur Erzeugung elektrischer Energie durch einen Temperaturgradienten |
-
2012
- 2012-09-27 DE DE102012217535.0A patent/DE102012217535A1/de not_active Withdrawn
-
2013
- 2013-09-26 WO PCT/EP2013/070047 patent/WO2014049041A1/de active Application Filing
- 2013-09-26 EP EP13773199.8A patent/EP2898188A1/de not_active Withdrawn
- 2013-09-26 US US14/430,393 patent/US20150247418A1/en not_active Abandoned
- 2013-09-26 JP JP2015533578A patent/JP2016500780A/ja active Pending
- 2013-09-26 CN CN201380050961.7A patent/CN104769230B/zh not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
A. V. MITYAKOV ET AL: "Application of the Transverse Seebeck Effect to Measurement of Instantaneous Values of a Heat Flux on a Vertical Heated Surface under Conditions of Free-Convection Heat Transfer", HIGH TEMPERATURE ORIGINAL RUSSIAN TEXT COPYRIGHT, VOL. 40, NO. 4, 2002,, vol. 40, no. 40, 18 May 2002 (2002-05-18), pages 620 - 621, XP055400897 * |
See also references of WO2014049041A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2016500780A (ja) | 2016-01-14 |
CN104769230A (zh) | 2015-07-08 |
DE102012217535A1 (de) | 2014-03-27 |
CN104769230B (zh) | 2017-07-28 |
WO2014049041A1 (de) | 2014-04-03 |
US20150247418A1 (en) | 2015-09-03 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20150305 |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
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17Q | First examination report despatched |
Effective date: 20170830 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20180110 |