WO1994005904A1 - Gas turbine plant with additional compressor - Google Patents
Gas turbine plant with additional compressor Download PDFInfo
- Publication number
- WO1994005904A1 WO1994005904A1 PCT/SE1993/000679 SE9300679W WO9405904A1 WO 1994005904 A1 WO1994005904 A1 WO 1994005904A1 SE 9300679 W SE9300679 W SE 9300679W WO 9405904 A1 WO9405904 A1 WO 9405904A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor
- combustor
- air
- gas turbine
- additional
- Prior art date
Links
Classifications
-
- 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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
-
- 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
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
- F02C3/107—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor with two or more rotors connected by power transmission
-
- 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
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
- F02C3/13—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor having variable working fluid interconnections between turbines or compressors or stages of different rotors
-
- 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
- F02C3/36—Open cycles
Definitions
- the present invention relates to a gas turbine plant comprising a compressor, a gas turbine and a pressurized combustor.
- combustion gases are generated which drive a gas turbine.
- This gas turbine drives a compressor which compresses air for pressurizing the combus- tor.
- the compressed air is at the same time utilized as com ⁇ bustion air during the combustion.
- the gas turbine is divided into a high-pressure and a low-pressure turbine. With such a division of the gas turbine, the low-pressure turbine can then, on a separate first shaft, drive a low- pressure compressor for compression of the air in a first stage.
- the high-pressure turbine then drives, via a second separate shaft, a high-pressure compressor in which air is compressed in a second stage before the air is supplied to the combustor.
- a cooler may be provided for cooling the air after the first stage in the compression.
- the fuel which is supplied to the combustor consists of gaseous, liquid or solid fuels, for example natural gas, oil or coal, in dependence on the nature of the plant.
- a PFBC power plant is an example of a plant comprising a gas tur ⁇ bine cycle according to the configuration described above in which a solid fuel, usually pulverized coal, is burnt in a fluidized bed in the combustor.
- an electric generator for generating useful energy is usually connected to the high-pressure tur ⁇ bine by way of a gear.
- the generator Upon start-up of the plant, it is possible to utilize the generator as electric motor to run up the compressor and hence pressurize the combustor.
- a compressor size is usually chosen which provides optimal air flow at a low exterior air temperature known to the site of the plant.
- the density of the air will be lower, whereby the air flow through the compressor is reduced.
- the invention relates to a method and a device for supplying additional air to a combustor in a gas turbine plant with the aid of an additional compressor for additional air, which means that air is compressed in the additional com ⁇ pressor and supplied to the combustor by passing the com ⁇ pressed air wholly or partially past the ordinary compressor which delivers air to the compressor for pressurizing the combustor and for maintenance of a combustion in the com ⁇ bustor.
- the additional compressor is driven by the gas turbine. If the latter is divided into a high-pressure and a low- pressure turbine, the additional compressor is suitably driven by the high-pressure turbine.
- the operation of the additional compressor can be performed via a gear or by mounting it on the same shaft as the turbine.
- Another alternative mode of operation is to mount the additional compressor on the same shaft as the generator via a clutch.
- a still further variant for operation of the additional compressor is to provide it with its own electric motor.
- the possi ⁇ bility of adaptation to other components in the plant and to the necessary air flow, caused by these components, to the combustion process in the combustor is improved.
- a possi ⁇ bility is also provided of compensating for the power reduc- tion in the plant caused by the reduced air flow to the combustor at higher exterior air temperatures.
- Figures la-lc schematically illustrates a number of general variants of a gas turbine plant wherein additional air is supplied to a combustor from an additional compressor.
- Figure 2 shows the supply of additional air from an addi ⁇ tional compressor to a combustor in a gas turbine plant, in which the gas turbine and the compressor are divided into high-pressure and low-pressure units.
- BK designates a combustor in which a fuel is fired under high pressure.
- the high pressure is accomplished by means of a compressor C, which compresses air which is supplied to the combustor BK via an intercept and bypass valve V. Air to the compressor is admitted via the air conduit 8.
- the combustion gases which are generated in the combustor BK are passed via the inter ⁇ cept and bypass valve V to a gas turbine GT to utilize the energy in the combustion gases, whereupon the consumed waste gases are removed via a waste gas conduit 10.
- the gas tur ⁇ bine GT is mounted on the same shaft A as the compressor C and thus drives the compressor.
- the intercept and bypass valve V comprises, besides cut-off valves for compressor air to the combustor BK, and cut-off valves for supply of combustion gases to the gas turbine GT, also a bypass conduit with a cut-off valve to provide a possibility of short-circuiting the compressor C and the gas turbine GT.
- the invention relates to a method and a device for supplying the combustor BK with additional air by means of an addi ⁇ tional compressor AC.
- Air to the additional compressor AC is sucked in via a second air intake 14 and is supplied to the combustor BK.
- the supply of the additional air to the com ⁇ bustor BK can be arranged in several different ways.
- the additional air can be passed via a conduit 16, as shown in Figures 1 and 2, to the intercept valve V in the same way as the air from the ordinary compressor C, whereupon the addi ⁇ tional air is passed to the combustor BK.
- Figure la also shows a variant in which the additional air via a conduit 18 is injected into the ordinary compressor C at an injection hole 20 in the compressor C downstream of the air conduit 8, whereby the additional air is further compressed in the com- pressor C.
- the additional compressor AC is driven by the gas turbine GT via the gear 12.
- the additional compres ⁇ sor AC can be driven by the gas turbine GT via the generator shaft, whereby the additional compressor AC is mounted via a clutch or a gear 22 to the generator shaft according to Figure lb.
- the additional compressor AC can be driven via a separate electric motor M connected to the additional compressor AC, as shown in Figure lc.
- both the gas turbine GT and the compressor C are divided into several stages according to Figure 2.
- the embodiment corresponds to the more general connection according to Figures la-lc.
- the combustion gases from the combustor BK drive a high-pressure turbine HPT, which is mounted together with a high-pressure compressor HPC on a first shaft Al.
- the gases expanded in the high- pressure turbine HPT are passed on to a low-pressure turbine LPT, from which the waste gases from the plant are removed via a waste gas conduit 10.
- a second shaft A2 as the low-pressure turbine LPT is mounted on, also a low-pressure compressor LPC is arranged.
- air is passed via the air conduit 8, whereafter the air, after compression in the low-pressure compressor LPC, is passed to the high-pressure compressor HPC, where the air is compressed further before it is supplied to the combustor BK via the intercept valve V.
- the air may be cooled in an intermediate cooler IC before being supplied to the high-pressure compressor HPC.
- the first shaft Al drives the generator G, via a gear 12, for generating electrical energy.
- air is compressed in an addi- tional compressor AC and supplied to the combustor BK together with the air compressed in the high-pressure com ⁇ pressor HPC.
- Air to the additional compressor AC is taken in via the air intake 14 and passed to the intercept valve V to the same inlet of the valve V through which the compressed air from the high-pressure compressor HPC is fed in.
- the compressed air is passed from the additional compressor AC to the inlet of the high-pressure compressor HPC down ⁇ stream of the intermediate cooler IC via the conduit altl, or upstream of the intermediate cooler IC via the conduit alt2 in dependence on the type of high-pressure compressor and adaptation thereto and to optimize the performance.
- the generator G in the preferred embodiment according to Figure 2 is driven according to any of the alternative modes of operation given above; for example, the additional compres ⁇ sor is arranged on an auxiliary shaft A3 connected to the gear 12, whereby the high-pressure turbine HPT drives the additional compressor AC via the gear 12.
- Direct operation of the additional compressor AC by mounting the additional compressor AC on the same shaft as the shaft of the high- pressure turbine HPT, that is on the first shaft Al, consti ⁇ tutes another alternative for operation.
- the size of the additional compressor is small relative to the high-pressure compressor HPC normally existing in a gas turbine plant of the kind discussed.
- the air flow of the additional compressor AC is chosen to be 10% of the air flow of the high-pressure compressor HPC, a value which is in no way critical for the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93919753A EP0769098A1 (en) | 1992-08-28 | 1993-08-17 | Gas turbine plant with additional compressor |
JP6507112A JPH08500655A (en) | 1992-08-28 | 1993-08-17 | Gas turbine plant with additional compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9202467-8 | 1992-08-28 | ||
SE9202467A SE500150C2 (en) | 1992-08-28 | 1992-08-28 | Methods and apparatus for supplying additional air to a combustion chamber at a gas turbine plant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994005904A1 true WO1994005904A1 (en) | 1994-03-17 |
Family
ID=20387027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1993/000679 WO1994005904A1 (en) | 1992-08-28 | 1993-08-17 | Gas turbine plant with additional compressor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0769098A1 (en) |
JP (1) | JPH08500655A (en) |
SE (1) | SE500150C2 (en) |
WO (1) | WO1994005904A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998045578A1 (en) * | 1997-04-07 | 1998-10-15 | Siemens Westinghouse Power Corporation | Thermal chemical recuperation method and system for use with gas turbine systems |
EP1095212A1 (en) * | 1998-07-07 | 2001-05-02 | Michael Nakhamkin | Operating a gas turbine with supplemental compressed air |
EP1536118A1 (en) * | 2003-11-25 | 2005-06-01 | Alstom Technology Ltd | Power station |
WO2016146945A1 (en) * | 2015-03-19 | 2016-09-22 | Valeo Systemes De Controle Moteur | System for producing energy or torque |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06241065A (en) * | 1993-02-17 | 1994-08-30 | Mitsubishi Heavy Ind Ltd | Gas turbine facility |
US9599070B2 (en) * | 2012-11-02 | 2017-03-21 | General Electric Company | System and method for oxidant compression in a stoichiometric exhaust gas recirculation gas turbine system |
JP2019504237A (en) * | 2015-12-04 | 2019-02-14 | ジェトプテラ、インコーポレイテッド | Micro turbine gas generator and propulsion system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4542621A (en) * | 1983-02-15 | 1985-09-24 | Ab Asea Atom | Method of and plant for combustion of water-vapor generating fuels |
US4628687A (en) * | 1984-05-15 | 1986-12-16 | A/S Kongsberg Vapenfabrikk | Gas turbine combustor with pneumatically controlled flow distribution |
US4974411A (en) * | 1986-12-22 | 1990-12-04 | Siemens Aktiengesellschaft | Supercharged coal-fired steam generator |
-
1992
- 1992-08-28 SE SE9202467A patent/SE500150C2/en unknown
-
1993
- 1993-08-17 WO PCT/SE1993/000679 patent/WO1994005904A1/en not_active Application Discontinuation
- 1993-08-17 EP EP93919753A patent/EP0769098A1/en not_active Withdrawn
- 1993-08-17 JP JP6507112A patent/JPH08500655A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4542621A (en) * | 1983-02-15 | 1985-09-24 | Ab Asea Atom | Method of and plant for combustion of water-vapor generating fuels |
US4628687A (en) * | 1984-05-15 | 1986-12-16 | A/S Kongsberg Vapenfabrikk | Gas turbine combustor with pneumatically controlled flow distribution |
US4974411A (en) * | 1986-12-22 | 1990-12-04 | Siemens Aktiengesellschaft | Supercharged coal-fired steam generator |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998045578A1 (en) * | 1997-04-07 | 1998-10-15 | Siemens Westinghouse Power Corporation | Thermal chemical recuperation method and system for use with gas turbine systems |
EP1095212A1 (en) * | 1998-07-07 | 2001-05-02 | Michael Nakhamkin | Operating a gas turbine with supplemental compressed air |
EP1095212A4 (en) * | 1998-07-07 | 2004-06-02 | Michael Nakhamkin | Operating a gas turbine with supplemental compressed air |
EP1536118A1 (en) * | 2003-11-25 | 2005-06-01 | Alstom Technology Ltd | Power station |
WO2016146945A1 (en) * | 2015-03-19 | 2016-09-22 | Valeo Systemes De Controle Moteur | System for producing energy or torque |
FR3033836A1 (en) * | 2015-03-19 | 2016-09-23 | Valeo Systemes De Controle Moteur | SYSTEM FOR PRODUCING ENERGY OR TORQUE |
Also Published As
Publication number | Publication date |
---|---|
SE9202467L (en) | 1994-03-01 |
EP0769098A1 (en) | 1997-04-23 |
JPH08500655A (en) | 1996-01-23 |
SE9202467D0 (en) | 1992-08-28 |
SE500150C2 (en) | 1994-04-25 |
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