EP1630361A1 - Dispositif et procédé de refroidissement d'un boîtier de turbine à gaz ou d'une chambre de combustion - Google Patents

Dispositif et procédé de refroidissement d'un boîtier de turbine à gaz ou d'une chambre de combustion Download PDF

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Publication number
EP1630361A1
EP1630361A1 EP05107505A EP05107505A EP1630361A1 EP 1630361 A1 EP1630361 A1 EP 1630361A1 EP 05107505 A EP05107505 A EP 05107505A EP 05107505 A EP05107505 A EP 05107505A EP 1630361 A1 EP1630361 A1 EP 1630361A1
Authority
EP
European Patent Office
Prior art keywords
cooling gas
housing
connection
cooling
opening
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
Application number
EP05107505A
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German (de)
English (en)
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EP1630361B1 (fr
Inventor
Zdenko Jurjevic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Technology GmbH
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Alstom Technology AG
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Publication of EP1630361A1 publication Critical patent/EP1630361A1/fr
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Publication of EP1630361B1 publication Critical patent/EP1630361B1/fr
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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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling

Definitions

  • the present invention relates to a device and a method for cooling a housing of a gas turbine and / or a combustion chamber, in particular the combustion chamber of a gas turbine.
  • the housing of a gas turbine or a gas turbine combustion chamber must be cooled during operation of the gas turbine.
  • a cooling gas path in the circumferential direction of the housing through the housing.
  • Such a cooling gas path thereby connects a first housing connection, the z. B. serves as a cooling gas inlet, with a second housing connection, which serves for example as a cooling gas outlet.
  • the cooling gas heats up.
  • the housing has a lower temperature at the cooling gas inlet than at the cooling gas outlet.
  • This means that a circumferential temperature difference is formed in the circumferential direction of the housing.
  • This peripheral temperature difference must not exceed a predetermined maximum value during operation of the gas turbine in order to avoid damage to the housing due to thermal stresses.
  • an average temperature of the housing does not exceed a predetermined maximum value in order to avoid damage to the housing.
  • the invention deals with the problem of providing a way for the cooling of the housing of a gas turbine or a combustion chamber, which in particular makes it possible to adjust the peripheral temperature difference regardless of the average temperature.
  • the present invention is based on the general idea of changing the peripheral temperature difference by switching the flow direction with which the cooling gas flow passes through the cooling gas path of the housing.
  • the previously used as a cooling gas inlet housing connection to the cooling gas outlet and the previously used as a cooling gas outlet housing connection to the cooling gas inlet are first reduced and then inverted, provided that the respective switching state is maintained longer. Due to the time interval between successive switching operations with respective flow direction reversal, the circumferential temperature difference can thus be set to quasi arbitrarily small values. In theory, even a peripheral temperature of about 0 ° C can be set.
  • the change in the direction of flow has substantially no effect on the average temperature of the housing.
  • the flow direction By reversing the flow direction, only the temperature distribution in the circumferential direction of the housing changes, while the average temperature of the housing remains constant.
  • the invention thus enables the circumferential temperature difference to be set independently of the average temperature. In this way, it is thus possible to set comparatively low values for both the peripheral temperature and the average temperature.
  • a cooling device is equipped with a switching device for flow direction reversal, which - depending on switching position - can connect a cooling gas outlet of a cooling gas supply either with the first housing connection or with the second housing connection, so as to connect the respective flow direction through the two housing connections with each other To determine cooling gas path.
  • a switching device for flow direction reversal which - depending on switching position - can connect a cooling gas outlet of a cooling gas supply either with the first housing connection or with the second housing connection, so as to connect the respective flow direction through the two housing connections with each other To determine cooling gas path.
  • the switching device may have any structure and be equipped in particular with any suitable switching elements, with the help of which the connection between the cooling gas outlet of the cooling gas blower on the one hand and the one or the other housing connection can be switched internally.
  • a switching device that operates with a flap assembly to define and change internal paths with which the cooling gas outlet can be selectively connected to one or the other housing connection.
  • Such a flap assembly has a simple structure, can be realized inexpensively and works reliably.
  • a gas turbine 1 comprises a housing 2, which surrounds the jacket of the gas turbine 1, which is not shown otherwise, in the manner of a shell. It is clear that this housing 2 can also envelop a combustion chamber, not shown, of the gas turbine 1 at the same time or alternatively serve exclusively for the enclosure of a combustion chamber, preferably a gas turbine combustion chamber.
  • a cooling device 3 which has a cooling gas fan 4 for driving a cooling gas.
  • the cooling gas air is preferably used.
  • the cooling gas fan 4 is incorporated into a closed cooling gas circuit 5, in which also a cooler 6 can be arranged.
  • the cooling gas circuit 5 it is possible to design the cooling gas circuit 5 open, so that the cooling gas is sucked in from the environment and then expelled back into the environment.
  • Cooling gas fan 4 and cooler 6 each form part of a cooling gas supply device 7, which has a cooling gas outlet 8 and a cooling gas inlet 9. Through the cooling gas outlet 8, the cooling gas passes from In contrast to this, due to the cooling gas inlet 9, the warmed-up cooling gas coming from the housing 2 returns to the cooling gas supply device 7.
  • a cooling gas path 10 is formed, which is guided in the circumferential direction of the housing 2 through the housing 2.
  • the cooling gas path 10 connects a first housing connection 11 to a second housing connection 12.
  • the cooling device 3 is also equipped with a switching device 13, by means of which the flow direction in the cooling gas path 10 can be reversed.
  • a first flow direction 14 is indicated by solid arrows, which adjusts itself in a first switching position of the switching device 13.
  • the switching device 13 is integrated in the cooling gas circuit 5 in such a way that it connects the cooling gas outlet 8 with the first housing connection 11 and the second housing connection 12 with the cooling gas inlet 9 in the first switching position. In contrast, the switching device 13 connects the cooling gas outlet 8 with the second housing connection 12 and the first housing connection 11 with the cooling gas inlet 9 in its second switching position. This then results in the second flow direction 15.
  • the second temperature T 2 is also referred to below as the outlet temperature T 2 .
  • this peripheral temperature difference .DELTA.T is not greater than a predetermined or predeterminable upper limit .DELTA.T max .
  • this peripheral temperature difference .DELTA.T is not less than a predetermined or predeterminable lower limit .DELTA.T min . It must therefore apply: ⁇ T min ⁇ ⁇ ⁇ T ⁇ ⁇ T Max ⁇ ,
  • the flow direction in the cooling gas path 10 can be reversed.
  • the lowest housing temperature while at the outlet of the cooling gas path 10, the highest temperature of the housing 2 is present.
  • the temperatures at the inlet and at the outlet of the cooling gas path 10 approach each other. This can lead to a zero crossing, in which the temperatures at the entrance and at the exit of the cooling gas path 10 are the same.
  • the temperature ratio between the temperatures at the inlet and at the outlet of the cooling gas path 10 can subsequently also be reversed.
  • the switching device 13 can be configured in any suitable manner. With reference to FIGS. 2 and 3, only one possible embodiment of such a switching device 13 is explained in more detail below, wherein this is to be done without limiting the generality.
  • the switching device 13 has four terminals, namely a first terminal 16, a second terminal 17, a third terminal 18 and a fourth terminal 19.
  • the first terminal 16 is connected to the cooling gas outlet 8 of the cooling gas supply device 7.
  • the second port 17 is connected to the cooling gas inlet 9 of the cooling gas supply device 7.
  • the third terminal 18 is connected to the first housing terminal 11 of the housing 2, while the fourth terminal 19 is connected to the second housing terminal 12 of the housing 2.
  • the switching device 13 in the particular embodiment shown here comprises three lines, namely a first line 20, a second line 21 and a third line 22. Furthermore, three openings are provided, namely a first opening 23, a second opening 24 and a third port 25.
  • the first conduit 20 leads from the first port 16 to the third port 18.
  • the second conduit 21 leads from the fourth port 19 to the second port 17.
  • the third conduit 22 leads from the second port 24 to the third port 25.
  • the first Opening 23 connects the first line 20 to the second line 21 and is for this purpose formed, for example, in a common partition wall between the first line 20 and the second line 21.
  • the second opening 24 is formed in the first conduit 20, preferably in one of the first opening 23 opposite wall of the first conduit 20.
  • the third opening 25 is formed in the second conduit 21, preferably in one of the first opening 23rd opposite wall of the second conduit 21st
  • the switching device 13 is also equipped with a flap assembly, which here comprises three flaps, namely a first flap 26, a second flap 27 and a third flap 28. While the first flap 26 serves to control the first opening 23, can with the second flap 27, the second opening 24 are controlled, and the third flap 28 serves to control the third opening 25th
  • Fig. 2 shows the first switching position of the switching device 13
  • Fig. 3 shows the second switching position of the switching device 13.
  • the first Switching position closes each flap 26, 27, 28 their associated opening 23, 24, 25.
  • the first line 20 and the second line 21 are enabled, while the third line 22 is locked.
  • the flap arrangement 26-27-28 thus defines a first path 29 leading from the first connection 16 to the third connection 18 through the first line 20 and a second path 30 leading from the fourth connection 19 to the second connection 17 through the second line 21.
  • the flaps 26, 27, 28 are each adjusted so that they open the respectively associated openings 23, 24, 25.
  • the first flap 26 locks in the second switching position, the first line 20, between the first opening 23 and the second opening 24.
  • the third flap 28 locks in the second switching position, the second line 21, between the first opening 23rd and the third opening 25.
  • the flap assembly 26-27-28 may define a third path 31 and a fourth path 32 in the second switching position.
  • the fourth path 32 leads from the third port 18 through a portion of the first port Line 20, through the second opening 24, through the third line 22, through the third opening 25 and through a part of the second line 21 to the second terminal 17th
  • the three flaps 26, 27, 28 can be adjusted simultaneously by means of a common actuator 33.
  • the switching device 13 shown here thus has a relatively inexpensive structure, which also works very reliable.
  • the cooling of the housing 2 can be conveniently carried out as follows:
  • the switching device 13 has its first switching position, so that the first flow direction 14 is present in the cooling gas path 10.
  • the first temperature T 1 at the first housing terminal 11 is smaller than the second temperature T 2 at the second housing terminal 12. That is, a circumferential temperature difference ⁇ T is established.
  • temperature sensors can be determined at position 34, the current peripheral temperature difference .DELTA.T. Subsequently, at position 35, the check is made as to whether the determined circumferential temperature difference ⁇ T lies within a predetermined value range. If this is the case, "YES” applies and is looped back to temperature measurement 34. If the measured circumferential temperature difference ⁇ T in the query 35 is no longer in the permissible value range, "NO” applies and it is preferably the question at position 36, whether the determined circumferential temperature difference .DELTA.T is greater than the upper allowable limit .DELTA.T max . If this is the case, "YES” applies and at position 37, the second flow direction 15 is now set to be set.
  • the switching device 13 is actuated for setting its second switching position.
  • the second temperature T 2 at the second housing connection 12 drops and the first temperature T 1 at the first housing connection 11 increases. That is to say, the circumferential temperature difference ⁇ T decreases.
  • the second flow direction 15 then remains until the peripheral temperature difference ⁇ T falls outside the permissible values at the lower range. Then the query 35 returns the answer " NO". The subsequent query 36 then also gives the answer " NO". As a result, the first flow direction 14 is then set again at position 38, by the switching device 13 is actuated in accordance with the setting of the first switching position.
  • FIG. 5 shows a conceivable sequence for controlling the average temperature T of the housing 2.
  • the mean temperature that is to say the average temperature T of the housing 2
  • This average temperature T can be formed, for example, by the mean value of the first temperature T 1 at the first housing connection 11 and the second temperature T 2 at the second housing connection 12.
  • the sensors for determining the circumferential temperature difference .DELTA.T can be used.
  • a plurality of temperature sensors are expediently distributed along the circumference of the housing 2, with which the average temperature T of the housing 2 can be determined.
  • a subsequent query 40 is then checked whether the measured average temperature T is in a predetermined or predeterminable range of permissible average temperatures. If this is the case, then “YES” applies, so that it is possible to loop back to the temperature determination 39. If, however, query 40 results in a response " NO", the query is made at position 41 as to whether the measured average temperature T is greater than the maximum permissible average temperature T max . If this is the case, then “YES” applies, so that suitable measures for lowering the average temperature T can be initiated at position 42. For example, the funded by the cooling gas path 10 cooling gas mass flow can be increased. For this purpose, z. B. the power of the fan 4 are increased accordingly. Additionally or alternatively, a cooling gas inlet temperature, ie the temperature with which the cooling gas flows into the cooling gas path 10, are lowered. Such a lowering of the cooling gas inlet temperature can be achieved, for example, by increasing the power of the radiator 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP05107505A 2004-08-23 2005-08-16 Dispositif et procédé de refroidissement d'un boîtier de turbine à gaz ou d'une chambre de combustion Not-in-force EP1630361B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004041271A DE102004041271A1 (de) 2004-08-23 2004-08-23 Einrichtung und Verfahren zum Kühlen eines Gehäuses einer Gasturbine bzw. einer Brennkammer

Publications (2)

Publication Number Publication Date
EP1630361A1 true EP1630361A1 (fr) 2006-03-01
EP1630361B1 EP1630361B1 (fr) 2007-08-08

Family

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Application Number Title Priority Date Filing Date
EP05107505A Not-in-force EP1630361B1 (fr) 2004-08-23 2005-08-16 Dispositif et procédé de refroidissement d'un boîtier de turbine à gaz ou d'une chambre de combustion

Country Status (4)

Country Link
US (1) US7682130B2 (fr)
EP (1) EP1630361B1 (fr)
AT (1) ATE369484T1 (fr)
DE (2) DE102004041271A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009106166A1 (fr) * 2008-02-27 2009-09-03 Continental Automotive Gmbh Carter de turbine refroidi à double paroi

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008011258A1 (de) * 2008-02-27 2009-09-10 Continental Automotive Gmbh Gekühltes Gehäuse bestehend aus einem Turbinengehäuse und einem Lagergehäuse eines Turboladers
US8079804B2 (en) 2008-09-18 2011-12-20 Siemens Energy, Inc. Cooling structure for outer surface of a gas turbine case
US8894359B2 (en) * 2011-12-08 2014-11-25 Siemens Aktiengesellschaft Gas turbine engine with outer case ambient external cooling system
US9664062B2 (en) * 2011-12-08 2017-05-30 Siemens Energy, Inc. Gas turbine engine with multiple component exhaust diffuser operating in conjunction with an outer case ambient external cooling system
US10094285B2 (en) * 2011-12-08 2018-10-09 Siemens Aktiengesellschaft Gas turbine outer case active ambient cooling including air exhaust into sub-ambient cavity
US20130149107A1 (en) * 2011-12-08 2013-06-13 Mrinal Munshi Gas turbine outer case active ambient cooling including air exhaust into a sub-ambient region of exhaust flow
US8973372B2 (en) 2012-09-05 2015-03-10 Siemens Aktiengesellschaft Combustor shell air recirculation system in a gas turbine engine
US8820090B2 (en) * 2012-09-05 2014-09-02 Siemens Aktiengesellschaft Method for operating a gas turbine engine including a combustor shell air recirculation system
US8820091B2 (en) 2012-11-07 2014-09-02 Siemens Aktiengesellschaft External cooling fluid injection system in a gas turbine engine
US8893510B2 (en) 2012-11-07 2014-11-25 Siemens Aktiengesellschaft Air injection system in a gas turbine engine
US20140301834A1 (en) * 2013-04-03 2014-10-09 Barton M. Pepperman Turbine cylinder cavity heated recirculation system
US10975721B2 (en) 2016-01-12 2021-04-13 Pratt & Whitney Canada Corp. Cooled containment case using internal plenum
US10907501B2 (en) * 2018-08-21 2021-02-02 General Electric Company Shroud hanger assembly cooling

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WO2000011324A1 (fr) * 1998-08-18 2000-03-02 Siemens Aktiengesellschaft Carter de turbine
WO2003038243A1 (fr) * 2001-10-30 2003-05-08 Alstom Technology Ltd Turbomachine

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DD54532A1 (de) * 1965-10-02 1967-03-05 Bergmann Borsig Veb Einrichtung zur Zuführung des Kühlgases in das Doppelmantel-Eintrittsgehäuse einer Gasturbine
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WO2000011324A1 (fr) * 1998-08-18 2000-03-02 Siemens Aktiengesellschaft Carter de turbine
WO2003038243A1 (fr) * 2001-10-30 2003-05-08 Alstom Technology Ltd Turbomachine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009106166A1 (fr) * 2008-02-27 2009-09-03 Continental Automotive Gmbh Carter de turbine refroidi à double paroi

Also Published As

Publication number Publication date
DE502005001170D1 (de) 2007-09-20
US20060191274A1 (en) 2006-08-31
DE102004041271A1 (de) 2006-03-02
ATE369484T1 (de) 2007-08-15
US7682130B2 (en) 2010-03-23
EP1630361B1 (fr) 2007-08-08

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