EP3069080A1 - Silobrennkammer für eine gasturbine - Google Patents
Silobrennkammer für eine gasturbineInfo
- Publication number
- EP3069080A1 EP3069080A1 EP15700658.6A EP15700658A EP3069080A1 EP 3069080 A1 EP3069080 A1 EP 3069080A1 EP 15700658 A EP15700658 A EP 15700658A EP 3069080 A1 EP3069080 A1 EP 3069080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- gas turbine
- combustion chamber
- flame tube
- extraction
- 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- Withdrawn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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 36
- 238000000605 extraction Methods 0.000 claims abstract description 28
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 44
- 238000001816 cooling Methods 0.000 description 18
- 238000000926 separation method Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/005—Combined with pressure or heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/14—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
- F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
- F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/26—Controlling the air flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03342—Arrangement of silo-type combustion chambers
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- Silo combustion chamber for a gas turbine comprising a cylindrical flame tube, which is provided to be ⁇ ner outside while forming a gap with a Cylind ⁇ step jacket, wherein a first Grundflä ⁇ surface of the flame tube comprising a burner and second base surface of the flame tube has a connectable to the turbine inlet of the gas turbine opening, wherein the Ummante ⁇ ment in an axial central region has a removal line for removing air from the gap.
- a gas turbine is a turbomachine in which a pressurized gas expands. It consists of a turbine or expander, an upstream compressor and an intermediate combustion chamber. The operating principle is based on the cycle (Joule process): This compressed via the blading of one or more compressor stages air, these then mixed in the combustion chamber with a gas or liquid ⁇ fuel ignites and burns.
- the result is a hot gas (mixture of combustion gas and air), which relaxes in the subsequent turbine part, with thermal converts into mechanical energy and first drives the compressor.
- the remaining portion is used in the shaft engine for driving a generator, a Propel ⁇ lers or other rotating consumers.
- the thermal energy accelerates the hot gas flow, which generates the thrust.
- gas turbines are also equipped with so-called silo separation chambers. These are comparatively large and comprise a cylindrical flame tube, which on the outside to form a gap with a cylindrical Um- coat is provided.
- the compressed air in the compressor flows through the gap to the bottom of the silo combustion chamber, which forms a base of the cylinder and on which the burners are arranged.
- the air is used for combustion and the resulting in the interior of the flame tube hot gas is passed through an opening in the other base of the cylinder to the turbine inlet.
- a heat exchanger which uses the exhaust gas to the turbine to preheat the compressed in the compressor air prior to its supply to the burners.
- silane separation chambers are arranged laterally on the jacket of the flame tube extraction lines for the air, by means of which the strö ⁇ coming air from the compressor in the gap and can be supplied to the heat exchanger. It has been found that it is advantageous to arrange the extraction lines in the direction of the axis of the cylindrical silo combustion chamber approximately centrally, since on the one hand space problems may occur in further arranged in the direction of the burner sampling, on the other hand, the Ver ⁇ dense air in the further flow through the gap is heated far.
- the temperature difference between the compressor air and exhaust gas from the gas turbine should be as large as possible namely.
- the invention proceeds from the consideration that the cooling of the burner facing the axial end portion of the silo combustion chamber is generated by the reduced amount of cooling air that is there ent ⁇ a result of the removal of the compressor air. Although the static pressure in this area is still high, but the air mass flow is lower, so that the local components are cooled less convective. Therefore, the convective flame tube cooling should be improved, in ⁇ the air mass flow is increased in the gap between the extraction line and Silobrennbibêt.
- tapping lines bleed lines
- a plurality of identical Ent ⁇ acquisition lines arranged at regular intervals along the circumference of the shell, one said shell for each of the sample lines in one of the first base conces- associated axial end portion has a bleed line opening into the respective extraction line.
- the sampling lines are so z. B. arranged in a star shape around the entire silo combustion chamber around, or there are only two sampling lines arranged opposite one another.
- a tapping line is provided for each discharge line, which in the manner described, the air mass flow in the Silobrennhunt founded ensures facing area of the gap between the flame tube and Umman- tion.
- the respective bleed line preferably has a smaller inner diameter than the respective bleed line.
- the extraction lines are advantageously comparatively large designed to keep the pressure losses in these lines low. Too large pressure losses in Rekupe ⁇ ratorsystem namely automatically increase the combustion chamber pressure loss and increase as a result, the cooling air consumption of the combustion chamber. This has negative effects on the We ⁇ ciency of the plant.
- wires are here RESIZE ⁇ SSER as DN500, better use is greater than DN 700th
- DN 700th By contrast, at ⁇ peg-lines only need to be just as large that is still present sufficient air flow for convective cooling to the lying beyond the withdrawal line areas of the flame tube. The lower the air mass flow, the lower the temperature of the air supplied to the heat exchanger, which is positive with regard to its efficiency. Therefore, these tap lines can be made smaller.
- the respective bleed line and the section of the respective bleed line between the shroud and the mouth of the bleed line are designed such that the bleed line generates a lower pressure loss than the section of the respective bleed line.
- the difference in pressure loss can be adjusted in design with regard to the required cooling demand.
- a first advantageous implementation of this pressure loss lower ⁇ difference can be realized by that the transition between the casing and respective tapping pipe rounded is. This leads to low pressure losses at the inlet of the tapping line.
- the transition between the casing and respective tapping line should be sharp, so that the inlet pressure losses are correspondingly high here directly into the Entnah ⁇ me admir.
- the aforementioned measures a sufficiently high Druckver- may be loss difference already guaranteed by the inlet pressure losses of the at ⁇ PTO or removal line, so that the ge ⁇ wished forced flow for the convective cooling to the lying beyond the removal line regions of the flame tube is established.
- the section of the respective extraction line between the inlet and the mouth of the bleed line can have one or more shutters. This also increases the pressure loss for the direct inflow into the extraction line.
- a gas turbine advantageously comprises a described silo combustion chamber.
- the described extraction line advantageously leads to a heat exchanger in which the extracted air is preheated by ⁇ means of the exhaust heat of the gas turbine.
- the extracted air forms a first fluid flow and the exhaust gas of the gas turbine forms the second fluid flow in the heat exchanger.
- the heated air is then reintroduced in the area of the burners and used there to burn the fuel in the burners in the flame tube.
- the gap in the silo combustion chamber is advantageously sealed to the first base surface, ie to the combustion chamber bottom with the burners, so that the compressor air is discharged.
- the gap in the silo combustion chamber is advantageously sealed to the first base surface, ie to the combustion chamber bottom with the burners, so that the compressor air is discharged.
- the advantages achieved by the invention are, in particular, that sufficient cooling of the flame tube is achieved by the attachment of bleed lines from the region between air intake and combustion chamber bottom. This makes it possible to use the recuperation in gas turbines with silo-combustion chambers, whereby an improvement of the thermodynamic gas turbine efficiency can be achieved around it.
- the arrangement of a heat exchanger is also comparatively favorable compared to a combined gas and steam turbine solution and comparatively simple
- An embodiment of the invention is based on a
- the 1 shows a gas turbine 1 in a longitudinal partial section.
- the partial section shows only the upper half of the gas turbine 1.
- the gas turbine 1 has in the interior a rotatably mounted on a Rotationsach- se 2 (axial direction) rotor 4, which is also referred to as a turbine runner.
- a Rotationsach- se 2 (axial direction) rotor 4 which is also referred to as a turbine runner.
- a suction housing 6 and a compressor 8.
- the air is in two in Figure 1 only shown in approach
- On the Silo ⁇ combustion chamber 10 is followed by a turbine 12 and the exhaust housing, not shown.
- the silo combustion chambers 10 communicate with an annular hot-gas passage 14 in the turbine 12. There, for example, four successive turbine stages 16, the turbine 12.
- Each turbine stage 16 is gebil ⁇ det two blade rings. Seen in the flow direction of a working medium, in the hot gas duct 14 a a blade row formed from rotor blades 20 22 from guide vane row 18 show ⁇ feln vanes 24 of the stator blade row 18 and the blades 20 are profiled slightly curved, similar to an aircraft wing.
- the vanes 24 are attached to the stator 26.
- Each vane 24 has, in addition to the actual airfoil, a guide vane foot, also referred to as a platform, and a vane head opposite the vane foot.
- the Leitschaufelkopf faces the rotor 4 and fixed to an inner ring 30.
- Each inner ring 30 encloses the shaft of the rotor 4.
- each rotor blade 20 has such a blade root, but ends in ei ⁇ ner blade tip.
- the rotor blades 18 of a rotor blade row 22 are attached to the rotor 4 by means of a respective turbine disk 28.
- the blades 20 thus form components of the rotor or
- Rotor 4 Coupled to the rotor 4 is a generator or a working machine (not shown).
- the rotor 4 is then rotated, whereby initially the compressor 8 is driven.
- the usable power is delivered to the work ⁇ machine, not shown.
- 2 shows one of the two Silobrennhuntn 10 of the gas turbine 1 in cross section.
- the gas turbine 1 in the exemplary embodiment comprises two such Silobrennhuntn 10, which are arranged on both sides of the gas turbine 1 standing over a deflection 32.
- the arrangement of the other, not shown silo combustion chamber 10 is correspondingly mirror-symmetrical.
- the silo separation chambers 10 z. B. also be arranged in a boxer arrangement.
- the silo combustion chamber 10 has a circular cylindrical basic shape. It consists of a straight, circular cylinder jacket-shaped flame tube 34, which is open at its lower base 36 down and there merges into the deflection 32, which communicates with the turbine 12. On the upper base surface 38, which is also referred to as the combustion chamber bottom, a plurality of burners 40 are arranged, wherein the flame ⁇ direction parallel to the axis 42 of the flame tube 34 points downward.
- the flame tube 34 is concentrically surrounded by a thus likewise circular cylindrical jacket 44.
- the sheath 44 also extends around the deflection 32, but always at a distance from the deflection 32 and the
- Flame tube 34 complies, so that - including the deflection 32 - obliquely cylinder jacket-shaped gap 45 is obtained.
- the jacket 44 merges into a shield-shaped cover 46, which closes off the interior of the flame tube 34 around the burners 40.
- the described gap 45 communicates with the outlet of the compressor 8 of the gas turbine 1. In the gap 45 therefore flows during operation of the gas turbine 1 compressed air flowing along the entire circumference of the deflection 32 and the flame tube 34 into the space surrounding the burner 40 and burned there with the fuel.
- the compressed air does not reach directly into the space surrounding the burner 40, but only through a heat exchanger, not shown.
- the gas turbine 1 in the exemplary embodiment is in fact equipped for heat recuperation.
- d. H. Axial center of the flame tube 34 is in the outer side of the casing 44 respectively on two opposite sides of withdrawal lines 50 introduced, in which the compressor air flows.
- the compressor air from the extraction lines 50 is then passed to the heat exchanger, not shown, where it is heated by means of the exhaust gas of the gas turbine 1.
- An ⁇ closing it is passed over a lying in the axis of the Silobrennkam ⁇ mer, communicating with the return chamber 40 of the burner feed line 52 to the burners 40th Due to the recuperation in the heat exchanger, in combination with wet compression, ie the injection of water into the intake air flow of the compressor 8, an increase in efficiency of up to 8.5% can be achieved.
- the described solution can also be retrofitted to existing systems.
- the attachment location of the extraction lines 50 results, on the one hand, from the desire to still cool as possible compressor air for heat to achieve the highest possible efficiency, on the other hand also for structural reasons, since here pipes of size DN500 or DN 700 used who ⁇ the to keep the pressure loss in the heat exchanger system as low as possible.
- the exposed to the hot gas flame tube 42 is subject to currency ⁇ rend operation of the gas turbine 1 high thermal Bela ⁇ obligations, since higher temperatures mean a better efficiency.
- the flame tube is therefore provided with lining heat shield bricks 54, which are arranged in superimposed, annular stone rows. However, these must be cooled, which happens on the one hand by convective cooling through the compressor air flowing in the gap 45, on the other hand by direct impingement cooling by means of cooling bores 56, which are introduced in large numbers into the entire flame tube 34. Compressor air flows through the cooling holes onto the heat shield blocks 54 and cools them.
- the problem here is, however, that the extraction lines 50 represent pressure sinks, so that the compressed air flows from the compressor outlet with the largest mass flow through these pipes. This reduces the cooling air ⁇ amount of lying above the withdrawal conduits 50 heat shield bricks 54, so that the cooling may be insufficient here.
- tap lines 58 are provided, which are placed at the height of the top row of stones, ie practically directly adjacent to the seal 48 in the upper axial end portion of the gap 45 in the casing 44 and communicate with the gap 45.
- a tapping line 58 located above the withdrawal line 50 is provided, which opens into the respective withdrawal line 50.
- the tapping lines 58 have a substantially smaller diameter than the sampling lines 50.
- This interpretation comprises on one hand the inner diameter of the tap lines 58 in relation to that of the withdrawal conduits 50 are the other hand taken measures a entspre ⁇ accordingly lower pressure drop in the tap lines 58 than in the portion 60 between the inlet of the extraction line 50 and the mouth of the tap lines 58 in the Extraction line 50 reach.
- the inlet of the extraction line 50 can be made sharp-edged, but the tapping line 58 rounded.
- the section 60 between the inlet of the extraction line 50 and the mouth of the tap lines 58 are provided in the extraction line 50 orifices.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15700658.6A EP3069080A1 (de) | 2014-01-22 | 2015-01-13 | Silobrennkammer für eine gasturbine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14152042.9A EP2899464B1 (de) | 2014-01-22 | 2014-01-22 | Silobrennkammer für eine Gasturbine |
| PCT/EP2015/050482 WO2015110316A1 (de) | 2014-01-22 | 2015-01-13 | Silobrennkammer für eine gasturbine |
| EP15700658.6A EP3069080A1 (de) | 2014-01-22 | 2015-01-13 | Silobrennkammer für eine gasturbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3069080A1 true EP3069080A1 (de) | 2016-09-21 |
Family
ID=50072859
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14152042.9A Not-in-force EP2899464B1 (de) | 2014-01-22 | 2014-01-22 | Silobrennkammer für eine Gasturbine |
| EP15700658.6A Withdrawn EP3069080A1 (de) | 2014-01-22 | 2015-01-13 | Silobrennkammer für eine gasturbine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14152042.9A Not-in-force EP2899464B1 (de) | 2014-01-22 | 2014-01-22 | Silobrennkammer für eine Gasturbine |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP2899464B1 (de) |
| WO (1) | WO2015110316A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458481A (en) * | 1982-03-15 | 1984-07-10 | Brown Boveri Turbomachinery, Inc. | Combustor for regenerative open cycle gas turbine system |
| GB8914825D0 (en) * | 1989-06-28 | 1989-08-16 | Rolls Royce Plc | Gas turbine engine power unit |
| JPH09329335A (ja) * | 1996-06-11 | 1997-12-22 | Hitachi Ltd | 再生型ガスタービン燃焼器 |
| JP2000008881A (ja) * | 1998-06-23 | 2000-01-11 | Toshiba Corp | ガスタービンプラント |
| JP2001107748A (ja) * | 1999-10-07 | 2001-04-17 | Toshiba Corp | ガスタービンプラント |
| EP1865258A1 (de) * | 2006-06-06 | 2007-12-12 | Siemens Aktiengesellschaft | Gepanzerte Maschinenkomponente und Gasturbine |
-
2014
- 2014-01-22 EP EP14152042.9A patent/EP2899464B1/de not_active Not-in-force
-
2015
- 2015-01-13 EP EP15700658.6A patent/EP3069080A1/de not_active Withdrawn
- 2015-01-13 WO PCT/EP2015/050482 patent/WO2015110316A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015110316A1 (de) | 2015-07-30 |
| EP2899464A1 (de) | 2015-07-29 |
| EP2899464B1 (de) | 2017-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20160615 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
Extension state: BA ME |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LAPP, PATRICK Inventor name: PIPKE, ROMINA Inventor name: JOHNSON, DAVID Inventor name: WILKE, MARTIN Inventor name: REXIN, OLAF |
|
| 18W | Application withdrawn |
Effective date: 20161028 |