CN105650679A - Combustion chamber of ground combustion engine with premixed third-class rotational flow part - Google Patents

Combustion chamber of ground combustion engine with premixed third-class rotational flow part Download PDF

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Publication number
CN105650679A
CN105650679A CN201610033934.4A CN201610033934A CN105650679A CN 105650679 A CN105650679 A CN 105650679A CN 201610033934 A CN201610033934 A CN 201610033934A CN 105650679 A CN105650679 A CN 105650679A
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CN
China
Prior art keywords
combustion
premixed
combustor
rotational flow
class
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Pending
Application number
CN201610033934.4A
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Chinese (zh)
Inventor
张群
邢力
杨省喆
汪玉明
黎超超
王云
赵寒蓉
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Publication date
Application filed by Northwestern Polytechnical University filed Critical Northwestern Polytechnical University
Priority to CN201610033934.4A priority Critical patent/CN105650679A/en
Publication of CN105650679A publication Critical patent/CN105650679A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/58Cyclone or vortex type combustion chambers

Abstract

The invention provides a combustion chamber of a ground combustion engine with a premixed third-class rotational flow part. The head of the combustion chamber comprises three rotational flow barrels of which the diameters are progressively increased around the same axis, wherein rotational flow blades in the two rotational flow barrels on the inner side are uniformly distributed around the axis, and a plurality of swirlers positioned in the outmost rotational flow barrel are inwardly and uniformly distributed around the inner diameter of the outside annular rotational flow barrel. Through the third-class rotational flow design of different manners, duty-class combustion at the head can drive combustion of high-speed premixed fuel flowing out from the outermost layer main combustion class, the main combustion class combustion speed and duty-class combustion uniformity can be improved, the discharge of NOx of the combustion chamber under each load is greatly reduced, the combustion efficiency of the combustion chamber of the ground combustion engine is improved, the residence time of fuel is shortened, and the space of the combustion chamber is saved.

Description

The ground combustion machine combustor that a kind of three swirler is partly-premixed
Technical field
The present invention relates to gas turbine field, in particular to the ground combustion machine combustor that a kind of three swirler is partly-premixed.
Background technology
Along with the development of heavy duty gas turbine technology, ultra-low emission pursued by modern heavy-duty gas turbine, develops towards the direction of high temperature rise simultaneously, and main chamber design is proposed requirements at the higher level by the lifting of Gas Turbine. Between many decades, developing goal is always higher combustor exit mean temperature (demarcating gas turbine technology grade) and more low stain thing discharge; Above-mentioned technical specification and combustor are closely related and self is conflicting, higher combustor exit mean temperature means that more multi fuel participates in combustion process, burning average indoor temperature is higher, and the nitrogen oxides and combustion chamber thermal procession as combustor major pollutants is closely related. The basic function of gas-turbine combustion chamber be in the confined space high intensity by organizing fuel and air to flow concurrent biochemical reaction, by chemical energy in fuel be in combustion gas heat energy thus promoting turbine to do work. Its core is the reciprocal action of turbulent mixing process and chemical reaction kinetics process.
Dry low NOx (drylowNOx, DLN) combustion technology is the Zeldovich generating principle according to thermal NO x, main for combustor combustion zone temperature is constrained in the narrow range of 1670��1900K to reduce NOx emission, therefore must adopt premixed combustion mode, control flame temperature by regulating the fuel/air mixture equivalent proportion of main combustion zone. But only control average equivalent ratio and be not met by requirement, all DLN combustor are desirable that the uniform premix dry low NOx (drylowNOx of fuel/air mixture, DLN) combustion technology it is crucial that control the total fuel/air mixture equivalent proportion of combustor primary zone premise under, realizing the uniform premix of fuel-air, the research and development of advanced DLN combustor all take very big energy on premix homogeneity question in the world.
The DLN combustor of existing most heavy ground combustion machine, so that flame combustion chamber is stable, it is the level on duty being diffused burning by Center, has thereby resulted in fuel uneven with the mixing of air, district of localized hyperthermia easily occur, the discharge capacity causing NOx is bigger. The combustor of the heavy duty gas turbine of general industry is when reducing operating load, it will usually the fuel accounting of value added class carrys out smooth combustion room flame, and the now disposal of pollutants of level on duty just account for bigger ratio.
Summary of the invention
The technical problem to be solved in the present invention is to provide the ground combustion machine combustor that a kind of three swirler is partly-premixed, can improve the uniformity of burning, reduces the discharge of combustor NOx under each load greatly. Also improve the efficiency of combustion of ground combustion machine combustor simultaneously, shorten the fuel time of staying, save space.
The present invention solves above-mentioned technical problem by following technological means: the ground combustion machine combustor that a kind of three swirler is partly-premixed, head of combustion chamber includes the whirl cylinder of three increasing diameter around same axle center, two the whirl cylinder inward eddy blades being wherein positioned at inner side are uniformly arranged around axle center, and the some cyclones being positioned at outermost whirl cylinder are uniformly arranged to center around outward turning flow cartridge internal diameter. The fuel being in two the annular whirl cylinders in outside shifts to an earlier date premix, carries out premixed combustion.
The diameter of described three whirl cylinders of head is than for 4:7:15, and length is 200mm��210mm. In ground floor (innermost layer) whirl cylinder, distance outlet 135��145mm place is equipped with the swirl vane that setting angle is 40��50 ��, and quantity is 8��10. From outlet 5��10mm place equipped with the swirl vane that setting angle is 0 �� in the second layer (centre) whirl cylinder, quantity is 24, uniformly arranges around combustor axis; Distance outlet 130��140mm place is equipped with the swirl vane that setting angle is 5��8 ��, and quantity is 16, uniformly arranges around combustor axis. Four fuel spray booms in second layer whirl cylinder are connected with the fuel spray boom of level on duty, and circumference is uniformly distributed, and length is 60��70mm.
Adopt the present invention can obtain following beneficial effect:
The three swirler design of different modes, the burning making header value class can drive the burning of the premixed fuel of the higher speed that outermost layer main combustion stage flows out, the burning velocity of main combustion stage and the combustion even degree of level on duty can be improved, reduce the discharge of combustor NOx under each load greatly, improve the efficiency of combustion of ground combustion machine combustor, shorten the fuel time of staying, save the bags.
Accompanying drawing explanation
Fig. 1: the axial front view of the present invention
Fig. 2: the axial sectional view of the present invention
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail:
As shown in Figure 1, the ground combustion machine combustor that a kind of three swirler of the present embodiment is partly-premixed, head of combustion chamber includes the whirl cylinder 1,2 and 3 of three increasing diameter around same axle center, two whirl cylinders 1 and 2 inward eddy blade 5 and 4 being wherein positioned at inner side is uniformly arranged around combustor axle center, and the some cyclones 6 being positioned at outermost whirl cylinder 3 are uniformly arranged around exterior annular whirl cylinder 3 radial center. The diameter of described three whirl cylinders of head is than for 4:7:15, and length is 200mm��210mm.
As shown in Figure 2, air simultaneously enters whirl cylinder 1,2 and 3 from head, whirl cylinder 1 is positioned at bosom, diameter is minimum, in it, distance outlet 135��145mm place is equipped with the swirl vane 5 that setting angle is 40��50 ��, quantity is 8��10, and swirl vane 5 is mounted on the level fuel spray boom 8 on duty on axis, and the fuel injection orifice 9 on level fuel spray boom 8 on duty is 70��75mm apart from the distance of whirl cylinder 1. The fuel and air mixture of whirl cylinder 1 ejection is slowed down blood pressure lowering by expansion segment, is substantially carried out diffusion combustion.
As shown in Figure 2, the second layer (centre) annular whirl cylinder 2 is connected with whirl cylinder 1 with 10 by swirl vane 4, distance outlet 130��140mm place is equipped with the swirl vane 4 that setting angle is 5��8 ��, and quantity is 16, uniformly arranges around combustor axis.Four fuel spray booms 7 in second layer whirl cylinder are connected with the fuel spray boom 8 of level on duty, and circumference is uniformly distributed, and length is 60��70mm. After air enters annular whirl cylinder 2 inside, first pass through the eddy flow of swirl vane 4, blend with the fuel of fuel spray boom 7 ejection, finally flow out whirl cylinder and carry out premixed combustion, setting angle is the generation that the setting of 0 �� of swirl vane 10 prevents tempering, quantity is 24, uniformly arranges around combustor axis, and it is from outlet 5��10mm.
As in figure 2 it is shown, be provided with some independent cyclones 6 and matched fuel spray boom 11 in third layer annular whirl cylinder 3, the center of rotation of the blade 6 of some cyclones is each supporting fuel spray boom 11. After fuel enters annular whirl cylinder 3, first pass through swirl vane 6 and carry out eddy flow, then the fuel sprayed with spray boom 11 blends, and accelerates to flow out finally by converging portion, carries out the premixed combustion of main combustion stage.
Ground combustion machine includes as above several combustor, and combustor is evenly arranged along unit circumferencial direction, and oblique cutting enters shell compressor cylinder and connects integral.
Above-described embodiment is only a preferred embodiment of the present invention, should not become limiting the scope of the invention, and the specific embodiment of the present invention does not limit above-described embodiment. Foregoing according to the present invention; ordinary technical knowledge and customary means according to this area; without departing under the above-mentioned basic fundamental thought premise of the present invention, the present invention can also make the amendment of other various ways, replacement or change, all should drop within the scope of rights protection of the present invention.

Claims (5)

1. the ground combustion machine combustor that a three swirler is partly-premixed, it is characterized in that, described head of combustion chamber includes the whirl cylinder of three increasing diameter around same axle center, two the whirl cylinder inward eddy blades being wherein positioned at inner side are uniformly arranged around combustor axle center, and the some cyclones being positioned at outermost whirl cylinder are uniformly arranged around the center of exterior annular whirl cylinder radial direction.
2. the ground combustion machine combustor that a kind of three swirler according to claim 1 is partly-premixed, it is characterised in that the diameter of described three whirl cylinders of head is than for 4:7:15, and length is 200mm��210mm.
3. the ground combustion machine combustor that a kind of three swirler according to claim 1,2 is partly-premixed, it is characterized in that, in described ground floor (innermost layer) whirl cylinder, distance outlet 135��145mm place is equipped with the swirl vane that setting angle is 40��50 ��, and quantity is 8��10.
4. the ground combustion machine combustor that a kind of three swirler according to claim 1,2 is partly-premixed, it is characterized in that, from outlet 5��10mm place equipped with the swirl vane that setting angle is 0 �� in the described second layer (centre) whirl cylinder, quantity is 24, uniformly arranges around combustor axis; Distance outlet 130��140mm place is equipped with the swirl vane that setting angle is 5��8 ��, and quantity is 16, uniformly arranges around combustor axis.
5. the ground combustion machine combustor that a kind of three swirler according to claim 1,3,4 is partly-premixed, it is characterized in that, four fuel spray booms in described second layer whirl cylinder are connected with the fuel spray boom of level on duty, and circumference is uniformly distributed, and length is 60��70mm.
CN201610033934.4A 2016-01-19 2016-01-19 Combustion chamber of ground combustion engine with premixed third-class rotational flow part Pending CN105650679A (en)

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Application Number Priority Date Filing Date Title
CN201610033934.4A CN105650679A (en) 2016-01-19 2016-01-19 Combustion chamber of ground combustion engine with premixed third-class rotational flow part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610033934.4A CN105650679A (en) 2016-01-19 2016-01-19 Combustion chamber of ground combustion engine with premixed third-class rotational flow part

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CN105650679A true CN105650679A (en) 2016-06-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107687651A (en) * 2017-07-24 2018-02-13 西北工业大学 A kind of axially staged oil-poor directly mixed low pollution combustor
CN112050256A (en) * 2020-09-18 2020-12-08 中国航发四川燃气涡轮研究院 Ground gas turbine combustion chamber head with multi-stage rotational flow and partial premixing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10288339A (en) * 1997-04-10 1998-10-27 Toshiba Corp Gas turbine combustor
US6363726B1 (en) * 2000-09-29 2002-04-02 General Electric Company Mixer having multiple swirlers
CN1397761A (en) * 2001-07-17 2003-02-19 三菱重工业株式会社 Starting burner of premixing burner, premixing burner and gas turbine
US20040060297A1 (en) * 2002-09-26 2004-04-01 Siemens Westinghouse Power Corporation Turbine engine fuel nozzle
CN103047683A (en) * 2012-12-27 2013-04-17 中国燃气涡轮研究院 Partial premixing and pre-evaporation combustion chamber with three-level oil passages
CN104896510A (en) * 2015-05-13 2015-09-09 广东电网有限责任公司电力科学研究院 Flame holder and ground gas turbine combustion chamber with same
CN105135478A (en) * 2015-10-16 2015-12-09 北京航空航天大学 Low-pollution combustion chamber using axial two-stage distributed cyclone for main combustion stage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10288339A (en) * 1997-04-10 1998-10-27 Toshiba Corp Gas turbine combustor
US6363726B1 (en) * 2000-09-29 2002-04-02 General Electric Company Mixer having multiple swirlers
CN1397761A (en) * 2001-07-17 2003-02-19 三菱重工业株式会社 Starting burner of premixing burner, premixing burner and gas turbine
US20040060297A1 (en) * 2002-09-26 2004-04-01 Siemens Westinghouse Power Corporation Turbine engine fuel nozzle
CN103047683A (en) * 2012-12-27 2013-04-17 中国燃气涡轮研究院 Partial premixing and pre-evaporation combustion chamber with three-level oil passages
CN104896510A (en) * 2015-05-13 2015-09-09 广东电网有限责任公司电力科学研究院 Flame holder and ground gas turbine combustion chamber with same
CN105135478A (en) * 2015-10-16 2015-12-09 北京航空航天大学 Low-pollution combustion chamber using axial two-stage distributed cyclone for main combustion stage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107687651A (en) * 2017-07-24 2018-02-13 西北工业大学 A kind of axially staged oil-poor directly mixed low pollution combustor
CN107687651B (en) * 2017-07-24 2019-11-22 西北工业大学 A kind of axially staged oil-poor directly mixed low pollution combustor
CN112050256A (en) * 2020-09-18 2020-12-08 中国航发四川燃气涡轮研究院 Ground gas turbine combustion chamber head with multi-stage rotational flow and partial premixing

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