CN102538016B - Internal rotational flow dual fuel nozzle for chemical regenerative cycle - Google Patents
Internal rotational flow dual fuel nozzle for chemical regenerative cycle Download PDFInfo
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- CN102538016B CN102538016B CN201210007506.6A CN201210007506A CN102538016B CN 102538016 B CN102538016 B CN 102538016B CN 201210007506 A CN201210007506 A CN 201210007506A CN 102538016 B CN102538016 B CN 102538016B
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- nozzle
- gas circuit
- eddy flow
- gas
- wall
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Abstract
The invention aims to provide an internal rotational flow dual fuel nozzle for a chemical regenerative cycle. The nozzle comprises a nozzle outer wall, an oil circuit pipeline, a gas spray hole, an oil spray hole and a rotational flow disk, wherein the oil circuit pipeline is arranged in the nozzle outer wall; a gas circuit cavity is formed between the oil circuit pipeline and the nozzle outer wall; the rotational flow disk is arranged between the oil circuit pipeline and the nozzle outer wall and divides the gas circuit cavity into a gas circuit front cavity and a gas circuit rear cavity; the gas circuit cavity is communicated with the gas spray hole; and the oil circuit pipeline is communicated with the oil spray hole. After a gas fuel sprayed from the nozzle is combusted, an internal rotational flow field can be formed, mixing is enhanced, combustion in a combustion chamber in the chemical regenerative cycle is intensified, the wall surface of a flame tube cannot be combusted, and the aims of combusting more fuels in a smaller space and shortening flame length are fulfilled.
Description
Technical field
What the present invention relates to is a kind of industrial muzzles of power energy field.
Background technology
Gas turbine is a kind of typical conventional fuel power set.It has that volume is little, power is large, lightweight and start the features such as fast, be widely used in the industrial core realms such as aviation, electric power, naval vessel and natural gas transport.Therefore, routine combustion machine application technology is undergone technological transformation and performance optimization, become the important topic that solves energy crisis and problem of environmental pollution.Chemical regenerative cycle is that combined cycle mode is steamed in a kind of advanced person's combustion.It mainly utilizes the low side waste heat of combustion machine exhaust to produce superheated vapor, utilize high-end waste heat to impel the cracking under catalyst action of part fuel oil-steam to generate the high heating value fuel gas such as methane, hydrogen and carbon monoxide, thereby improve the average lower heat of combustion of fuel.The working method of chemical regenerative cycle gas turbine (CRGT) determines that its combustion chamber adopts bifuel system, therefore, require chemical recuperation cycle combustion chamber not only to there is the function that uses separately fuel oil or cracking gas fuel, also there is the function of two kinds of fuel multifuel combustions.Nozzle is as the significant components of combustion chamber, and the quality of its performance will directly affect the performance of the aspects such as igniting, efficiency of combustion, combustion stability, Temperature Distribution and exhaust pollution, also can affect the life-span of burner inner liner and turbo blade simultaneously.
There is following defect in traditional dual fuel nozzle: (1) gas circuit is hollow cylinder pipeline or installs swirl vane additional, but two schemes all exists defect.The former defect is that fuel blending is bad, and the length of flame is longer; Although the latter has overcome above-mentioned defect, because nozzle gas circuit diameter less (generally between 15-20mm), swirl vane size is also smaller, therefore process very inconvenient, and after processing also the utmost point be not easy to be installed into gas circuit.(2) gas circuit is not made any change, and merely at head open pore, although be not easy to like this burn burner inner liner wall, in combustion chamber, high-temperature region is relatively long and narrow.
Summary of the invention
The object of the present invention is to provide and can in gas circuit, form inner eddy flow flow field, and then reinforcement blending, burning in strengthening chemical regenerative cycle in combustion chamber, reach the object of the more fuel that burns, the shortening length of flame in less space, can not cause to burner inner liner wall again a kind of inward turning streaming dual fuel nozzle for chemical regenerative cycle of ablation simultaneously.
The object of the present invention is achieved like this:
A kind of inward turning streaming dual fuel nozzle for chemical regenerative cycle of the present invention, comprise nozzle outer wall, oil line pipe, fumarole, nozzle opening, it is characterized in that: also comprise eddy flow tray, oil line pipe be arranged in nozzle outer wall and and nozzle outer wall between form gas circuit cavity, eddy flow tray is arranged between oil line pipe and nozzle outer wall and by gas circuit cavity and is divided into gas circuit ante-chamber and gas circuit back cavity front and back two parts, gas circuit cavity is communicated with fumarole, and oil line pipe is communicated with nozzle opening.
The present invention can also comprise:
1, on described eddy flow tray evenly, eight of the circumferential arrangement holes that become miter angle with eddy flow tray central axis, eight holes connection gas circuit back cavities.
2, the cross section in the hole on described eddy flow tray is rectangle, circle or oval.
3, described fumarole has two weeks and is oblique pore, and fumarole rotation direction is identical with eddy flow tray rotation direction.
Advantage of the present invention is: after the gas fuel combustion of nozzle ejection of the present invention, can form inner eddy flow flow field, and then strengthen the burning in combustion chamber in blending, strengthening chemical regenerative cycle, can not burn again burner inner liner wall, reached the object of the more fuel that burns, the shortening length of flame simultaneously in less space.
Brief description of the drawings
Fig. 1 is vertical section of the present invention structural map;
Fig. 2 is the structural map of overlooking of eddy flow tray;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is head pore structural map of the present invention.
Detailed description of the invention
For example the present invention is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～4, the high-temperature region of the combustion chamber of employing cracking gas swirl vane is earlier, illustrates that gaseous fuel and air blending are comparatively desirable; Head has this structure of pore to have certain guide effect to the stream that goes out of cracking gas, and high-temperature region is relatively long and narrow, is not easy to like this ablation burner inner liner wall.The present invention combines the pluses and minuses of above-mentioned two kinds of structures, and these two kinds of structures are optimized to integration, has obtained desirable inward turning streaming dual fuel nozzle structure.
(1) in dual fuel nozzle gas circuit, processed one than the slightly large groove of gas circuit hollow cylinder pipeline diameter, make an eddy flow tray that match with groove diameter, that thickness is suitable, on eddy flow tray, along circumferentially evenly punching, the rotation direction in hole is contrary with the outside cyclone of nozzle.The axis in hole is not parallel or vertical with eddy flow tray axis, but becomes miter angle.Like this, when fuel gas is transported to eddy flow tray from gas circuit top, due to the effect in duct on eddy flow tray, reach the effect identical with traditional cyclone, there is strong eddy flow effect in gas, in the time that the fuel gas after this strand of eddy flow continues to the motion of nozzle gas circuit afterbody and finally sprays from spray orifice, fuel gas and the quick blending of liquid after the atomization of dual fuel nozzle oil circuit, and finally enter in the combustion chamber of chemical regenerative cycle.In fuel gas runner, with can cyclone structure, can effectively reduce the axial velocity of cracking gas, be conducive to the blending of fuel gas and air simultaneously.
(2) because gaseous fuel after flowing through eddy flow tray can be with certain curl mass flowing nozzle outlet, add like this pore of constant slope orifice gas fuel outlet place (being nozzle head), so just can reduce the jet expansion eddy flow loss of cracking gas as far as possible.Fuel gas is had to rectified action simultaneously, also can play to nozzle the effect of cooling protection.
The dual fuel nozzle of the present invention's design is mainly made up of parts such as oil line pipe 10, gas circuit cavity 3 and 6, eddy flow tray 4, eddy flow tray mount pad 11, outer walls 2.In nozzle outer wall 2, process one and formed eddy flow tray mount pad 11 structures than the slightly large groove of gas circuit hollow cylinder pipeline diameter, made in addition an eddy flow tray 4 that match with groove diameter, that thickness is suitable.The course of work of the designed dual fuel nozzle of the present invention is: 1, cracking gas enters gas circuit ante-chamber 3 from liquid passage inlet 1, by even on eddy flow tray 4, eight of circumferential arrangement become the aperture 5 of miter angle to enter gas circuit back cavity 6 with eddy flow tray central axis, there is strong eddy flow phenomenon in cracking gas now, cracking gas after eddy flow finally flows out in the combustion chamber of chemical regenerative cycle system through fumarole 7, now because blending has obtained reinforcement, therefore in chemical regenerative cycle system, the burning in combustion chamber has obtained strengthening, reached the more fuel that burns in less space, shorten the object of the length of flame.2, fuel oil enters oil circuit from oil circuit import 12, and because oil circuit diameter is little, length is large, therefore the Suo Taier diameter by the fuel droplets after nozzle opening 8 ejections is less, atomizing effect is better.
As shown in Figure 2, on eddy flow tray evenly, circumferential arrangement eight apertures, aperture cross section is rectangle.
As shown in Figure 3, each aperture on eddy flow tray becomes miter angle with eddy flow tray central axis.
As shown in Figure 4, have two steam vents at the head of nozzle, the design size of pore is 7 × φ 1.5mm from the inside to the outside, 9 × φ 2mm, what in the present invention, adopt is the oblique pore that has certain curl, and the rotation direction eddy flow tray rotation direction inner with it is identical, and this design can reduce the loss of cracking gas outlet eddy flow.
Claims (2)
1. the inward turning streaming dual fuel nozzle for chemical regenerative cycle, comprise nozzle outer wall, oil line pipe, fumarole, nozzle opening, it is characterized in that: also comprise eddy flow tray, oil line pipe be arranged in nozzle outer wall and and nozzle outer wall between form gas circuit cavity, eddy flow tray is arranged between oil line pipe and nozzle outer wall and by gas circuit cavity and is divided into gas circuit ante-chamber and gas circuit back cavity front and back two parts, gas circuit cavity is communicated with fumarole, and oil line pipe is communicated with nozzle opening;
On described eddy flow tray evenly, eight of the circumferential arrangement holes that become miter angle with eddy flow tray central axis, eight holes connection gas circuit back cavities;
Described fumarole has two weeks and is oblique pore, and fumarole rotation direction is identical with eddy flow tray rotation direction.
2. a kind of inward turning streaming dual fuel nozzle for chemical regenerative cycle according to claim 1, is characterized in that: the cross section in the hole on described eddy flow tray is rectangle, circle or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007506.6A CN102538016B (en) | 2012-01-11 | 2012-01-11 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007506.6A CN102538016B (en) | 2012-01-11 | 2012-01-11 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102538016A CN102538016A (en) | 2012-07-04 |
| CN102538016B true CN102538016B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210007506.6A Expired - Fee Related CN102538016B (en) | 2012-01-11 | 2012-01-11 | Internal rotational flow dual fuel nozzle for chemical regenerative cycle |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980208B (en) * | 2012-11-19 | 2014-12-03 | 哈尔滨工程大学 | Dual-fuel spray nozzle for oil-gas automatic switching in chemical heat return circulation |
| CN103175220B (en) * | 2013-03-19 | 2015-09-23 | 哈尔滨工程大学 | A kind of dual fuel nozzle for chemical regenerative cycle |
| EP2927598B1 (en) * | 2014-03-31 | 2018-12-19 | Siemens Aktiengesellschaft | Method for replacing a swirler |
| CN104534513B (en) * | 2014-11-27 | 2017-09-15 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Gas-turbine combustion chamber revolves jet mixing nozzle |
| CN105066176B (en) * | 2015-08-14 | 2017-05-24 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
Citations (6)
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|---|---|---|---|---|
| CN2139215Y (en) * | 1992-11-07 | 1993-07-28 | 北京航空航天大学 | Heavy oil vertex flow type pneumatic atomized spray injector |
| EP0905443A2 (en) * | 1997-09-30 | 1999-03-31 | General Electric Company | Dual-fuel nozzle for inhibiting carbon deposition onto combustor surfaces in a gas turbine |
| EP1013990A2 (en) * | 1998-12-24 | 2000-06-28 | Mitsubishi Heavy Industries, Ltd. | A dual fuel nozzle |
| CN201225656Y (en) * | 2008-05-12 | 2009-04-22 | 哈尔滨东安发动机（集团）有限公司 | Air atomizing nozzle |
| CN101713546A (en) * | 2008-10-08 | 2010-05-26 | 中国航空工业第一集团公司沈阳发动机设计研究所 | Low-pollution combustor for various fuels |
| CN201672538U (en) * | 2010-02-22 | 2010-12-15 | 北京动力机械研究所 | Whirlcone, pneumatic nebulization spray nozzle and gas turbine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201517770U (en) * | 2009-08-10 | 2010-06-30 | 北京兴达奇热工控制设备有限公司 | Improved gas burner for industrial furnace |
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2012
- 2012-01-11 CN CN201210007506.6A patent/CN102538016B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2139215Y (en) * | 1992-11-07 | 1993-07-28 | 北京航空航天大学 | Heavy oil vertex flow type pneumatic atomized spray injector |
| EP0905443A2 (en) * | 1997-09-30 | 1999-03-31 | General Electric Company | Dual-fuel nozzle for inhibiting carbon deposition onto combustor surfaces in a gas turbine |
| EP1013990A2 (en) * | 1998-12-24 | 2000-06-28 | Mitsubishi Heavy Industries, Ltd. | A dual fuel nozzle |
| CN201225656Y (en) * | 2008-05-12 | 2009-04-22 | 哈尔滨东安发动机（集团）有限公司 | Air atomizing nozzle |
| CN101713546A (en) * | 2008-10-08 | 2010-05-26 | 中国航空工业第一集团公司沈阳发动机设计研究所 | Low-pollution combustor for various fuels |
| CN201672538U (en) * | 2010-02-22 | 2010-12-15 | 北京动力机械研究所 | Whirlcone, pneumatic nebulization spray nozzle and gas turbine |
Non-Patent Citations (1)
| Title |
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| 杨洪磊，郑洪涛.双燃料燃气轮机喷嘴结构设计与数值模拟.《热科学与技术》.2010,第9卷(第3期),266-268. * |
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| CN102538016A (en) | 2012-07-04 |
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Effective date of registration: 20201208 Address after: Area A129, 4th floor, building 4, Baitai Industrial Park, Yazhou Bay science and Technology City, Yazhou District, Sanya City, Hainan Province, 572024 Patentee after: Nanhai innovation and development base of Sanya Harbin Engineering University Address before: 150001 Heilongjiang, Nangang District, Nantong street,, Harbin Engineering University, Department of Intellectual Property Office Patentee before: HARBIN ENGINEERING University |
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