EP2812636A2 - Ringbrennkammer-bypass - Google Patents
Ringbrennkammer-bypassInfo
- Publication number
- EP2812636A2 EP2812636A2 EP13710388.3A EP13710388A EP2812636A2 EP 2812636 A2 EP2812636 A2 EP 2812636A2 EP 13710388 A EP13710388 A EP 13710388A EP 2812636 A2 EP2812636 A2 EP 2812636A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- annular combustion
- ring
- outer shell
- heat shield
- 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
- 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
- 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
- F23R3/04—Air inlet arrangements
-
- 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
- F23R3/04—Air inlet arrangements
- F23R3/06—Arrangement of apertures along the flame tube
- F23R3/08—Arrangement of apertures along the flame tube between annular flame tube sections, e.g. flame tubes with telescopic sections
Definitions
- the invention relates to an annular combustion chamber with a bypass for reducing the carbon monoxide emissions in part-load operation and to a gas turbine with such an annular combustion chamber.
- the combustion temperature drops in the combustion chamber.
- the primary zone temperature relevant for the carbon monoxide emissions also falls below a minimum value, whereby carbon monoxide is increasingly generated or expelled. Since this should be avoided, the usable partial load range of the gas turbine is limited.
- the object of the invention is to provide an annular combustion chamber of the type mentioned, which allows a considerable increase in the usable partial load range.
- the invention solves this problem by providing that in such an annular combustion chamber for a gas turbine with an outer shell which has at least one inlet opening for a burner and an outlet opening into a turbine chamber, closable in the outer shell in the region of the outlet and substantially parallel to Symmetryeachse the annular combustion chamber aligned channels are provided, can be guided by the Verêtrendluft into the annular combustion chamber.
- compressor air can be introduced in a region at the end of the combustion chamber without participating in the combustion, that is, it is returned to the air-fuel mixture only after the combustion process. This causes the greasy mixture in the combustion chamber to become higher
- the annular combustion chamber comprises a last row of heat shield plates arranged in the region of the outlet in the interior of the annular combustion chamber on the outer shell and a penultimate row of heat shield plates arranged in the direction of the at least one inlet opening next to the last row, between the last and penultimate Series of heat shield plates in the region of the channels a gap is provided. Through this gap, the compressor discharge air can flow undisturbed into the combustion chamber.
- an adjusting device which comprises ring segments which form a ring which is aligned coaxially with the annular combustion chamber and axially displaceable relative to the annular combustion chamber.
- the ring segments have the advantage of easier assembly and disassembly. It is expedient if the ring of the adjusting device is continuously displaceable in order to set as desired a desired gap size and thus to be able to remove a certain amount of air from the Verêtrendluft prior to combustion can.
- the ring segments on their turbine side facing away from essays for engagement in the channels are trapezoidal.
- the air to be passed through the channels can be set very precisely.
- the channels can of course be completely closed.
- the ring is moved by a mechanism only in the axial direction.
- Such a mechanism for controlling and moving the ring segments So this can be done via motors, levers, hydraulic mechanisms, etc., the z. B. axially move the ring on rails or other motion elements.
- these metrics also be mounted inside or outside of the housing.
- the attachments of the ring segments have a thermal barrier coating (TBC) on their surfaces exposed to the hot gas of the combustion.
- TBC thermal barrier coating
- the interior of the outer shell in the region of the gap between see the last and the penultimate row of the heat shield plates, ie between the openings of the channels to the combustion chamber interior towards a thermal barrier coating In prior art annular combustion chambers, the last and penultimate rows of heat shield plates still abut each other and the interior of the outer shell was sufficiently protected by the heat shield plates. Due to the gap caused by the invention, the outer shell in this area is more exposed to the combustion gases.
- the invention can be implemented relatively easily, since the ring segments, for example two ring halves, are simple components which only have to be displaced axially.
- FIG. 2 shows the turbine-facing side of the annular combustion chamber with adjusting device on the outer shell and bypass channels
- FIG. 3 shows a half-ring of the adjusting device for the bypass
- FIG. 4 shows a metal heat shield plate according to the prior art
- Figure 5 shows a metallic heat shield plate for the annular combustion chamber according to the invention
- FIG. 1 shows, schematically and by way of example, the combustion system of an annular combustion chamber 1 according to the invention.
- the annular combustion chamber 1 consists of a closed ring which is arranged around a rotor axis 2.
- Burner 3 are arranged in the upper region of the combustion chamber 1 in inlet openings 4. There, the mixing of the fuel 5 with the compressor air 6 takes place. In the combustion chamber 1, the actual combustion takes place. Through the outlet 7, the hot combustion gases pass into the turbine chamber 8, where they meet the first stationary vane 9.
- the annular combustion chamber 1 is lined with ceramic heat shields 10 and metallic heat shields 11, which are attached to the outer shell 12.
- an adjusting device 15 is provided on the outer side of the outer shell 12, as shown in FIG.
- the adjusting device 15 has ring segments 16, for example, two half rings, as shown in Figure 3 one. With appropriate essays 17 certain gap sizes can be set in the channels 14, or they are even completely closed.
- FIG. 4 shows such a heat shield plate 18 of the last row of a prior art annular combustion chamber as well as the dashed line cut around a metal heat shield plate 11 as shown in FIG. 5 and required for the present invention
- Figure 6 shows a view of the inside of the annular combustion chamber 1 with the last 11 and penultimate 13 Hitzeschildplatten #2 and the openings 20 of the channels 14 in the outer shell 12 for the air bypass at partial load.
- the attachments 17 of the ring segments 16 on their surfaces exposed to the hot gas of the combustion also have a thermal barrier coating.
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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012204162A DE102012204162A1 (de) | 2012-03-16 | 2012-03-16 | Ringbrennkammer-Bypass |
PCT/EP2013/055344 WO2013135859A2 (de) | 2012-03-16 | 2013-03-15 | Ringbrennkammer-bypass |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2812636A2 true EP2812636A2 (de) | 2014-12-17 |
EP2812636B1 EP2812636B1 (de) | 2016-06-29 |
Family
ID=47901090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13710388.3A Not-in-force EP2812636B1 (de) | 2012-03-16 | 2013-03-15 | Ringbrennkammer-bypass |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150007573A1 (de) |
EP (1) | EP2812636B1 (de) |
KR (1) | KR20140138710A (de) |
CN (1) | CN104169649B (de) |
DE (1) | DE102012204162A1 (de) |
WO (1) | WO2013135859A2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104807043A (zh) * | 2014-11-29 | 2015-07-29 | 哈尔滨广瀚燃气轮机有限公司 | 天然气燃料燃气轮机环形燃烧室 |
CN104566463B (zh) * | 2014-11-29 | 2016-12-07 | 哈尔滨广瀚燃气轮机有限公司 | 燃气轮机低排放燃烧室空气调节装置 |
DE102015202097A1 (de) * | 2015-02-06 | 2016-08-11 | Siemens Aktiengesellschaft | Ringbrennkammer mit Bypasssegment |
DE102015205975A1 (de) * | 2015-04-02 | 2016-10-06 | Siemens Aktiengesellschaft | Umführungs-Hitzeschildelement |
DE102015215207A1 (de) * | 2015-08-10 | 2017-02-16 | Siemens Aktiengesellschaft | Brennkammer für eine Gasturbine und Hitzeschildelement zum Auskleiden einer derartigen Brennkammer |
WO2017032424A1 (de) * | 2015-08-27 | 2017-03-02 | Siemens Aktiengesellschaft | Kühlluftoptimiertes metallisches hitzeschildelement |
CN108131399B (zh) * | 2017-11-20 | 2019-06-28 | 北京动力机械研究所 | 一种发动机轴承座冷却结构 |
EP3499125A1 (de) * | 2017-12-12 | 2019-06-19 | Siemens Aktiengesellschaft | Rohrbrennkammer mit keramischer auskleidung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3958413A (en) * | 1974-09-03 | 1976-05-25 | General Motors Corporation | Combustion method and apparatus |
DE69421896T2 (de) * | 1993-12-22 | 2000-05-31 | Siemens Westinghouse Power Corp., Orlando | Umleitungsventil für die Brennkammer einer Gasturbine |
US5636510A (en) * | 1994-05-25 | 1997-06-10 | Westinghouse Electric Corporation | Gas turbine topping combustor |
JP3846169B2 (ja) * | 2000-09-14 | 2006-11-15 | 株式会社日立製作所 | ガスタービンの補修方法 |
JP2002317650A (ja) * | 2001-04-24 | 2002-10-31 | Mitsubishi Heavy Ind Ltd | ガスタービン燃焼器 |
SE523082C2 (sv) * | 2001-11-20 | 2004-03-23 | Volvo Aero Corp | Anordning vid en brännkammare hos en gasturbin för reglering av inflöde av gas till brännkammarens förbränningszon |
US7631504B2 (en) * | 2006-02-21 | 2009-12-15 | General Electric Company | Methods and apparatus for assembling gas turbine engines |
US8281601B2 (en) * | 2009-03-20 | 2012-10-09 | General Electric Company | Systems and methods for reintroducing gas turbine combustion bypass flow |
US20110225947A1 (en) * | 2010-03-17 | 2011-09-22 | Benjamin Paul Lacy | System and methods for altering air flow in a combustor |
EP2423596A1 (de) * | 2010-08-27 | 2012-02-29 | Siemens Aktiengesellschaft | Hitzeschildelement |
GB201200237D0 (en) * | 2012-01-09 | 2012-02-22 | Rolls Royce Plc | A combustor for a gas turbine engine |
DE102012204103A1 (de) * | 2012-03-15 | 2013-09-19 | Siemens Aktiengesellschaft | Hitzeschildelement für einen Verdichterluftbypass um die Brennkammer |
-
2012
- 2012-03-16 DE DE102012204162A patent/DE102012204162A1/de not_active Ceased
-
2013
- 2013-03-15 WO PCT/EP2013/055344 patent/WO2013135859A2/de active Application Filing
- 2013-03-15 EP EP13710388.3A patent/EP2812636B1/de not_active Not-in-force
- 2013-03-15 KR KR1020147025333A patent/KR20140138710A/ko not_active Application Discontinuation
- 2013-03-15 US US14/382,918 patent/US20150007573A1/en not_active Abandoned
- 2013-03-15 CN CN201380013443.8A patent/CN104169649B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013135859A3 * |
Also Published As
Publication number | Publication date |
---|---|
EP2812636B1 (de) | 2016-06-29 |
CN104169649A (zh) | 2014-11-26 |
WO2013135859A3 (de) | 2013-11-14 |
US20150007573A1 (en) | 2015-01-08 |
KR20140138710A (ko) | 2014-12-04 |
DE102012204162A1 (de) | 2013-09-19 |
WO2013135859A2 (de) | 2013-09-19 |
CN104169649B (zh) | 2016-11-09 |
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