CN104329173B - The control method of a kind of gas turbine fuel and air mixing ratio and device - Google Patents
The control method of a kind of gas turbine fuel and air mixing ratio and device Download PDFInfo
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- CN104329173B CN104329173B CN201410459760.9A CN201410459760A CN104329173B CN 104329173 B CN104329173 B CN 104329173B CN 201410459760 A CN201410459760 A CN 201410459760A CN 104329173 B CN104329173 B CN 104329173B
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Abstract
The present invention relates to control method and the device of a kind of gas turbine fuel and air mixing ratio, adopt fuel to mix with air and recently control gas turbine igniting and the following real-time optimization fuel of slow train rotating speed and the configuration of air mixing ratio, mainly comprise liquid fuel mass flowmenter, and volume of air flow meter, pressure sensor and temperature sensor, gas turbine forwards combustion chamber time of ignition to from band, gas turbine controller is according to intake air flow, gas mass flow under pressure and temperature computation bid condition, detect gas turbine rotary speed, adjust fuel duty, make fuel mix equivalent proportion with air and equal 1 starting ignition program, after lighting a fire successfully, gas turbine controller, by detecting in real time and adjusting fuel and air equivalent ratio, mixes optimum in real time target thereby realize fuel with air.
Description
Technical field
The invention belongs to the control field of gas turbine, relate generally to a kind of gas turbine fuel and air mixedThe control method of composition and division in a proportion and device, before controlling gas turbine igniting for Study On Start-up Process For Gas Turbines andFuel and the air mixing ratio of lighting a fire in successful after-burner.
Background technology
Igniting reliability in gas turbine when starting combustion chamber is mainly by fuel and air mixing ratio, air velocityDetermine etc. factor, and at present fuel and air mixed control apparatus and method difficulty in gas-turbine combustion chamberWith accurate proportioning fuel and air mixing ratio, more cannot be according to different operating modes to fuel in combustion chamber and skyGas mixing ratio detects in real time, adjusts and mates, and cannot realize fuel and mix in real time optimum with airTarget, igniting poor reliability in combustion chamber while causing the starting of existing gas turbine, gas turbine is from starting to slowlyAlso there is the problems such as the configuration equivalent of fuel and air is unreasonable in car process, has seriously hindered gas turbineIgniting reliability.
Summary of the invention
When the present invention starts for solving existing gas turbine, combustion chamber igniting poor reliability and starting are to slow trainFuel and air mixing ratio unreasonable allocation in process, can not real-time matching fuel and the mixing ratio of air etc.Problem, has proposed control method and the device of a kind of gas turbine fuel and air mixing ratio, its technical sideCase comprise fuel and air mixing ratio control method, fuel and air mixing ratio control device and adoptWith the gas turbine of the method and device. Method of the present invention and device be particularly useful for ground gas turbine,Aero-engine and other are lighted in the power set that reliability requirement is high burning.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of gas turbine fuelWith the control method of air mixing ratio, described gas turbine comprises fuel metering and control module A and combustion gasGenerator unit B, is characterized in that:
--described fuel metering comprises with control module A the fuel tank (1), the mistake that are connected successively by fuel pipeFilter (10), fuel pump (11), pressure maintaining valve (13), main fuel valve (14), wherein, described fuel pump (11)Between outlet and the import of pressure maintaining valve (13), be communicated with the import of described fuel pump (11) and steady by fuel pipeBetween the import of pressure valve (13), be also provided with the fuel pipe of a band safety valve (12); Described main fuel valve (14) is logicalCrossing main fuel control valve (8) and primary fuel control valve (9) in parallel is communicated with the oil-in of combustion chamber;
Described fuel metering and control module A also comprise that gas turbine controller (5), gas turbine turnSpeed sensor (2), frequency converter (3), air pressure probe (4), air temperature sensor (6), volume of airFlowmeter (20), fuel mass flow rates meter (7), wherein, described gas turbine rotary speed sensor (2), frequency conversionDevice (3), air pressure probe (4), air temperature sensor (6), volume of air flow meter (20) and fuelMass flowmenter (7) all communicates to connect with described gas turbine controller (5); Described air pressure sensingDevice (4), air temperature sensor (6), volume of air flow meter (20) are arranged on blower outlet and combustion chamberOn supply air line between import, measure respectively pressure, temperature and the volume flow of air in this supply air lineAmount; Described frequency converter (3) is electrically connected with the CD-ROM drive motor of described fuel pump (11), for described fuel pump (11) is carriedFor driving electric power; Described fuel mass flow rates meter (7) be arranged on described pressure maintaining valve (13) and main fuel valve (14) itBetween fuel pipe on or be arranged on the fuel pipe between described fuel tank (1) and fuel pump (11);
--described gas generator unit B comprises compressor, combustion chamber and turbine;
Wherein, when described gas turbine is during in prefiring preparatory stage, control in accordance with the following steps combustionThe mixing ratio of material and air:
SS1. record the actual speed of gas turbine according to gas turbine rotary speed sensor (2), with combustion chamber pointThe fire speed that fire requires contrasts, and when the actual speed of measuring is less than fire speed, increases combustion gasTurbine rotating speed, in the time that the actual speed of measuring is not less than fire speed, enters step 2;
SS2. in the time that the actual speed of gas turbine is greater than fire speed, described gas turbine controller (5)Calculate gas mass flow under corresponding mark condition according to the flow of combustion chamber inlet air, pressure and thermometer,The reckoning fuel of sening as an envoy to mixes equivalent proportion and equals 1 o'clock required target fuel duty with air;
SS3. based on fuel mass flowmenter (7) records natural fuel supply, with described target fuel supplyAmount contrasts, and in the time that described natural fuel supply is less than target fuel duty, increases fuel and suppliesYing Liang, in the time that natural fuel supply equals target fuel duty, starting ignition program.
Further, when after described gas turbine starting ignition, control in accordance with the following steps fuel and airMixing ratio:
SS4. record the actual speed of gas turbine according to gas turbine rotary speed sensor (2), described combustion gas wheelMachine controller (5) calculates gas under corresponding mark condition according to the flow of combustion chamber inlet air, pressure and thermometerWeight flow, calculates that the fuel of sening as an envoy to mixes equivalent proportion and equals required target fuel supply in 1 o'clock with airAmount;
SS5. based on fuel mass flowmenter (7) records natural fuel supply, with described target fuel supplyAmount contrasts, and in the time that described natural fuel supply is less than target fuel duty, increases fuel and suppliesYing Liang, in large supply during in target fuel duty when natural fuel, reduce fuel duty, makeFuel mixes equivalent proportion and remains in real time 1 with air.
Further, described gas turbine controller (5) is by described air pressure probe (4), skyGas temperature sensor (6) and volume of air flow meter (20) gather combustion chamber inlet air pressure, temperature andFlow, and calculate gas under corresponding mark condition according to the pressure of combustion chamber inlet air, temperature and flowmeterMass flow.
Further, described gas turbine controller (5) passes through described frequency converter (3) adjusting combustion chamberNatural fuel supply.
Preferably, described compressor is connected by power transmission shaft with turbine.
Preferably, described compressor comprises low-pressure compressor (15) and high-pressure compressor (16), described turbine bagDraw together high-pressure turbine (18) and low-pressure turbine (19).
Preferably, described gas turbine fuel is applicable to the liquid fuel of different calorific values, as heavy oil and aviationKerosene etc.
Further, natural fuel and air mixing ratio areAdjust actual according to this formulaFuel duty, makes fuel mix equivalent proportion with air and remains 1.
Further, described fuel is aviation kerosine, and natural fuel and air mixing ratio areAdjust actual aviation kerosine supply according to this formula, make aviation kerosine mix equivalent proportion with air and keepBe 1.
According to a further aspect in the invention, provide one to utilize above-mentioned control method to control gas turbineThe device of fuel and air mixing ratio, comprises fuel metering and control module A and gas generator unit B,It is characterized in that:
--described fuel metering comprises with control module A the fuel tank (1), the mistake that are connected successively by fuel pipeFilter (10), fuel pump (11), pressure maintaining valve (13), main fuel valve (14), wherein, described fuel pump (11)Between outlet and the import of pressure maintaining valve (13), be communicated with the import of described fuel pump (11) and steady by fuel pipeBetween the import of pressure valve (13), be also provided with the fuel pipe of a band safety valve (12); Described main fuel valve (14) is logicalCrossing main fuel control valve (8) and primary fuel control valve (9) in parallel is communicated with the oil-in of combustion chamber;
Described fuel metering and control module A also comprise that gas turbine controller (5), gas turbine turnSpeed sensor (2), frequency converter (3), air pressure probe (4), air temperature sensor (6), volume of airFlowmeter (20), fuel mass flow rates meter (7), wherein, described gas turbine rotary speed sensor (2), frequency conversionDevice (3), air pressure probe (4), air temperature sensor (6), volume of air flow meter (20) and fuelMass flowmenter (7) all communicates to connect with described gas turbine controller (5); Described air pressure sensingDevice (4), air temperature sensor (6), volume of air flow meter (20) are arranged on blower outlet and combustion chamberOn supply air line between import, measure respectively pressure, temperature and the volume flow of air in this supply air lineAmount; Described frequency converter (3) is electrically connected with the CD-ROM drive motor of described fuel pump (11), for described fuel pump (11) is carriedFor driving electric power; Described fuel mass flow rates meter (7) be arranged on described pressure maintaining valve (13) and main fuel valve (14) itBetween fuel pipe on or be arranged on the fuel pipe between described fuel tank (1) and fuel pump (11);
--described gas generator unit B comprises compressor, combustion chamber and turbine;
Described fuel metering is connected by holding wire with gas generator unit B successively with control module A.
The control method of gas turbine fuel of the present invention and air mixing ratio and device are with respect to prior artRemarkable advantage be: while having overcome the starting of existing gas turbine, combustion chamber igniting poor reliability and starting are arrivedFuel and air mixing ratio unreasonable allocation in slow train process, can not real-time matching fuel and the mixing of airThe problem such as compare, utilize the real-time proportioning fuel of control method and air capacity, can ensure that fuel mixes with airEquivalent proportion remains 1 in real time, has greatly improved fuel and air configuration reasonability. Method of the present invention andDevice is particularly useful for ground gas turbine, aero-engine and other lights reliability requirement to burningIn high power set.
Brief description of the drawings
Fig. 1 is the control device schematic diagram of gas turbine fuel of the present invention and air mixing ratio;
Fig. 2 is the front fuel of igniting and air mixing ratio control logic flow chart;
Fig. 3 is the rear fuel of igniting and air mixing ratio control logic flow chart.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearer, develop simultaneously referring to accompanying drawingEmbodiment, the present invention is described in more detail.
As shown in Figure 1, the control device of gas turbine fuel of the present invention and air mixing ratio, comprises combustionMaterial metering and control module A and gas generator unit B.
Fuel metering and control module A comprise the fuel tank 1 that is connected successively by fuel pipe, filter 10,Fuel pump 11, pressure maintaining valve 13, main fuel valve 14, wherein, the outlet of fuel pump 11 and pressure maintaining valve 13Import between be communicated with by fuel pipe, between the import of fuel pump 11 and the import of pressure maintaining valve 13 alsoBe provided with a fuel pipe with safety valve 12; Main fuel valve 14 is by main fuel control valve 8 Hes in parallelPrimary fuel control valve 9 is communicated with the oil-in of combustion chamber; Fuel metering and control module A also comprise combustion gasWheel machine controller 5, gas turbine rotary speed sensor 2, frequency converter 3, air pressure probe 4, airTemperature sensor 6, volume of air flow meter 20, fuel mass flow rates meter 7, wherein, gas turbine turnsSpeed sensor 2, frequency converter 3, air pressure probe 4, air temperature sensor 6, air volume flowAmount meter 20 and fuel mass flow rates meter 7 all communicate to connect with gas turbine controller 5; Air pressure sensingDevice 4, air temperature sensor 6, volume of air flow meter 20 is arranged on blower outlet and combustion chamber is enteredOn supply air line between mouthful, measure respectively pressure, temperature and the volume flow of air in this supply air line;Frequency converter 3 is electrically connected with the CD-ROM drive motor of fuel pump 11, for fuel pump 11 provides driving electric power; FuelMass flowmenter 7 is arranged on the fuel pipe between pressure maintaining valve 13 and main fuel valve 14 or is arranged on oilOn fuel pipe between case 1 and fuel pump 11.
Gas generator unit B comprises low-pressure compressor 15, high-pressure compressor 16, combustion chamber 17, heightPress turbine 18 and low-pressure turbine 19.
As shown in Figure 2, when gas turbine is during in prefiring preparatory stage, control in accordance with the following stepsThe mixing ratio of fuel and air:
SS1. record the actual speed of gas turbine according to gas turbine rotary speed sensor 2, with combustion chamber pointThe fire speed that fire requires contrasts, and when the actual speed of measuring is less than fire speed, increases combustion gasTurbine rotating speed, in the time that the actual speed of measuring is not less than fire speed, enters step 2;
SS2. in the time that the actual speed of gas turbine is greater than fire speed, gas turbine controller 5 is according to combustionThe flow, pressure and the thermometer that burn chamber inlet air calculate gas mass flow under corresponding mark condition, calculateThe fuel of sening as an envoy to mixes equivalent proportion and equals 1 o'clock required target fuel duty with air;
SS3. based on fuel mass flowmenter 7 records natural fuel supply, enters with target fuel dutyRow contrast, in the time that natural fuel supply is less than target fuel duty, increases fuel duty, whenWhen natural fuel supply equals target fuel duty, starting ignition program.
As shown in Figure 3, when after described gas turbine starting ignition, control in accordance with the following steps fuel with emptyThe mixing ratio of gas:
SS4. record the actual speed of gas turbine according to gas turbine rotary speed sensor 2, gas turbine controlDevice 5 processed calculates gas matter under corresponding mark condition according to the flow of combustion chamber inlet air, pressure and thermometerAmount flow, calculates that the fuel of sening as an envoy to mixes equivalent proportion and equals 1 o'clock required target fuel duty with air;
SS5. based on fuel mass flowmenter 7 records natural fuel supply, enters with target fuel dutyRow contrast, in the time that natural fuel supply is less than target fuel duty, increases fuel duty, whenNatural fuel is in large supply reduces fuel duty in the time of target fuel duty, makes fuel with emptyGas mixes equivalent proportion and remains in real time 1.
Above-mentioned control device of the present invention and method, combustion chamber igniting while having overcome existing gas turbine startingPoor reliability and starting to fuel in slow train process and air mixing ratio unreasonable allocation, can not real-timeJoin the problems such as the mixing ratio of fuel and air, utilize the real-time proportioning fuel of control method and air capacity, canEnsure that fuel mixes equivalent proportion and remains in real time 1 with air, greatly improved fuel and air configuration rationallyProperty. Method of the present invention and device are particularly useful for ground gas turbine, aero-engine and other is rightBurning is lighted in the power set that reliability requirement is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all at thisWithin the spirit and principle of invention, any amendment of making, be equal to replacement, improvement etc., all should be included inWithin scope of the present invention.
Claims (10)
1. a control method for gas turbine fuel and air mixing ratio, described gas turbine comprises fuelMetering and control module A and gas generator unit B, is characterized in that:
--described fuel metering comprises with control module A the fuel tank (1), the mistake that are connected successively by fuel pipeFilter (10), fuel pump (11), pressure maintaining valve (13), main fuel valve (14), wherein, described fuel pump (11)Between the import of import and pressure maintaining valve (13), be also provided with the fuel pipe of a band safety valve (12); Described main fuelValve (14) connects with the oil-in of combustion chamber by main fuel control valve (8) in parallel and primary fuel control valve (9)Logical;
Described fuel metering and control module A also comprise that gas turbine controller (5), gas turbine turnSpeed sensor (2), frequency converter (3), air pressure probe (4), air temperature sensor (6), volume of airFlowmeter (20), fuel mass flow rates meter (7), wherein, described gas turbine rotary speed sensor (2), frequency conversionDevice (3), air pressure probe (4), air temperature sensor (6), volume of air flow meter (20) and fuelMass flowmenter (7) all communicates to connect with described gas turbine controller (5); Described air pressure sensingDevice (4), air temperature sensor (6), volume of air flow meter (20) are arranged on blower outlet and combustion chamberOn supply air line between import, measure respectively pressure, temperature and the volume flow of air in this supply air lineAmount; Described frequency converter (3) is electrically connected with the CD-ROM drive motor of described fuel pump (11), for described fuel pump (11) is carriedFor driving electric power; Described fuel mass flow rates meter (7) be arranged on described pressure maintaining valve (13) and main fuel valve (14) itBetween fuel pipe on or be arranged on the fuel pipe between described fuel tank (1) and fuel pump (11);
--described gas generator unit B comprises compressor, combustion chamber and turbine;
Wherein, when described gas turbine is during in prefiring preparatory stage, control in accordance with the following steps combustionThe mixing ratio of material and air:
SS1. record the actual speed of gas turbine according to gas turbine rotary speed sensor (2), with combustion chamber pointThe fire speed that fire requires contrasts, and when the actual speed of measuring is less than fire speed, increases combustion gasTurbine rotating speed, in the time that the actual speed of measuring is not less than fire speed, enters step 2;
SS2. in the time that the actual speed of gas turbine is greater than fire speed, described gas turbine controller (5)Calculate gas mass flow under corresponding mark condition according to the flow of combustion chamber inlet air, pressure and thermometer,The reckoning fuel of sening as an envoy to mixes equivalent proportion and equals 1 o'clock required target fuel duty with air;
SS3. based on fuel mass flowmenter (7) records natural fuel supply, with described target fuel supplyAmount contrasts, and in the time that described natural fuel supply is less than target fuel duty, increases fuel and suppliesYing Liang, in the time that natural fuel supply equals target fuel duty, starting ignition program.
2. control method according to claim 1, is characterized in that, when described gas turbine startingAfter igniting, control in accordance with the following steps the mixing ratio of fuel and air:
SS4. record the actual speed of gas turbine according to gas turbine rotary speed sensor (2), described combustion gas wheelMachine controller (5) calculates gas under corresponding mark condition according to the flow of combustion chamber inlet air, pressure and thermometerWeight flow, calculates that the fuel of sening as an envoy to mixes equivalent proportion and equals required target fuel supply in 1 o'clock with airAmount;
SS5. based on fuel mass flowmenter (7) records natural fuel supply, with described target fuel supplyAmount contrasts, and in the time that described natural fuel supply is less than target fuel duty, increases fuel and suppliesYing Liang, in large supply during in target fuel duty when natural fuel, reduce fuel duty, makeFuel mixes equivalent proportion and remains in real time 1 with air.
3. control method according to claim 1 and 2, is characterized in that, described gas turbine controlDevice processed (5) is by described air pressure probe (4), air temperature sensor (6) and volume of air flowMeter (20) gathers pressure, temperature and the flow of combustion chamber inlet air, and according to combustion chamber inlet airPressure, temperature and flowmeter calculate gas mass flow under corresponding mark condition.
4. control method according to claim 1 and 2, is characterized in that, described gas turbine controlDevice processed (5) regulates the natural fuel supply of combustion chamber by described frequency converter (3).
5. control method according to claim 1 and 2, is characterized in that, described compressor and whirlpoolWheel connects by power transmission shaft.
6. control method according to claim 1 and 2, is characterized in that, described compressor comprisesLow-pressure compressor (15) and high-pressure compressor (16), described turbine comprises high-pressure turbine (18) and low-pressure turbine(19)。
7. control method according to claim 1 and 2, is characterized in that, described gas turbine combustionMaterial is applicable to the liquid fuel of different calorific values.
8. control method according to claim 1 and 2, is characterized in that, natural fuel and airMixing equivalent proportion isAdjust actual fuel duty according to this formula, make fuel and airMix equivalent proportion and remain 1.
9. control method according to claim 8, is characterized in that, described fuel is aviation kerosine,Natural fuel mixes equivalent proportion with airAdjust actual aviation kerosine according to this formulaSupply, makes aviation kerosine mix equivalent proportion with air and remains 1.
10. one kind is utilized the control method described in above-mentioned any one claim to control gas turbine fuelDevice with air mixing ratio, is characterized in that: described fuel metering and control module A and combustion gas occurDevice unit B is connected successively by holding wire.
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| CN109736953B (en) * | 2018-12-13 | 2020-02-28 | 西安航天动力研究所 | Multi-start liquid oxygen kerosene engine of gas-driven pre-compressed turbine and starting method |
| CN110645103B (en) * | 2019-09-11 | 2021-01-29 | 上海和兰透平动力技术有限公司 | Gas turbine on-duty gas inlet flow control system |
| CN114459054A (en) * | 2020-11-10 | 2022-05-10 | 中国科学院上海高等研究院 | Method for maintaining combustion stability of gas turbine engine during dynamic process, computer readable medium and combustion engine control system |
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| JP2544470B2 (en) * | 1989-02-03 | 1996-10-16 | 株式会社日立製作所 | Gas turbine combustor and operating method thereof |
| JP3132259B2 (en) * | 1993-09-13 | 2001-02-05 | 日産自動車株式会社 | Control device for gas turbine combustor |
| JP4365553B2 (en) * | 2001-12-26 | 2009-11-18 | 株式会社日立製作所 | Engine fuel control device and idling air-fuel ratio control method |
| EP1860302A1 (en) * | 2006-05-22 | 2007-11-28 | Siemens Aktiengesellschaft | Gas turbine engine starting method and control device |
| ITMI20080164A1 (en) * | 2008-02-04 | 2009-08-05 | Nuovo Pignone Spa | METHOD FOR STARTING A GAS TURBINE |
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