CN102538016A - 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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- CN102538016A CN102538016A CN2012100075066A CN201210007506A CN102538016A CN 102538016 A CN102538016 A CN 102538016A CN 2012100075066 A CN2012100075066 A CN 2012100075066A CN 201210007506 A CN201210007506 A CN 201210007506A CN 102538016 A CN102538016 A CN 102538016A
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- eddy flow
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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 nozzle 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 big, in light weight and start characteristics 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.The chemical back heating circulation is that the 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 high heating value fuel gas such as methane, hydrogen and carbon monoxide, thereby improve the average lower heat of combustion of fuel.Bifuel system is adopted in its combustion chamber of the working method of chemical back heating cycle combustion turbine (CRGT) decision, therefore, requires the chemical back heating gas-turbine combustion chamber not only to have to use separately the function of fuel oil or cracking gas fuel, also has 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 influence the performance of aspects such as igniting, efficiency of combustion, combustion stability, Temperature Distribution and exhaust pollution, also can influence the life-span of burner inner liner and turbo blade simultaneously.
There is following defective in traditional dual fuel nozzle: (1) gas circuit is the hollow cylinder pipeline or installs swirl vane additional, but all there is defective in two kinds of schemes.The former defective is that fuel blending is bad, and the length of flame is longer; Though the latter has overcome above-mentioned defective, because nozzle gas circuit diameter less (generally between 15-20mm), the swirl vane size is also smaller, and therefore processing is very inconvenient, and after the 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 the head open pore, though be not easy to like this burn the burner inner liner wall, the high-temperature region is long and narrow relatively in the combustion chamber.
Summary of the invention
The object of the present invention is to provide and in gas circuit, to form the inner eddy flow flow field; And then reinforcement blending; Strengthen the burning in the combustion chamber in the chemical back heating circulation; Reach the purpose of the more fuel of burning, the shortening length of flame in littler space, can not cause a kind of interior spiral-flow type dual fuel nozzle that is used for the chemical back heating circulation of ablation simultaneously again the burner inner liner wall.
The objective of the invention is to realize like this:
A kind of interior spiral-flow type dual fuel nozzle that is used for the chemical back heating circulation of the present invention; Comprise nozzle outer wall, oil line pipe, fumarole, nozzle opening; It is characterized in that: comprise also that eddy flow tray, oil line pipe are installed in the nozzle outer wall and and the nozzle outer wall between form the gas circuit cavity, eddy flow tray is installed between oil line pipe and the nozzle outer wall and with the gas circuit cavity and is divided into gas circuit ante-chamber and gas circuit back cavity front and back two parts; The gas circuit cavity is communicated with fumarole, and oil line pipe is communicated with nozzle opening.
The present invention can also comprise:
1, on the described eddy flow tray evenly, eight holes that become miter angle with the eddy flow tray central axis of circumferential arrangement, eight holes connection gas circuit back cavities.
2, the cross section in the hole on the described eddy flow tray is rectangle, circle or oval.
3, described fumarole had two weeks and is oblique pore, and the fumarole rotation direction is identical with the 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 the inner eddy flow flow field; And then strengthen blending, strengthen the burning in the combustion chamber in the chemical back heating circulation; Simultaneously can not burn the burner inner liner wall again, reach the purpose of the more fuel of burning, the shortening length of flame in littler space.
Description of drawings
Fig. 1 is a 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 a head pore structural map of the present invention.
The specific embodiment
For example the present invention is done description 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, explains that gaseous fuel and air blending are comparatively desirable; Head has the guide effect certain to effluenting of cracking gas of this structure of pore, and the high-temperature region is long and narrow relatively, and burner inner liner wall like this is not easy to ablate.The present invention has combined the pluses and minuses of above-mentioned two kinds of structures, and these two kinds of structures are optimized integration, has obtained desirable interior spiral-flow type dual fuel nozzle structure.
(1) in the dual fuel nozzle gas circuit, processed one than the big slightly groove of gas circuit hollow cylinder pipeline diameter; Make an eddy flow tray that be complementary with groove diameter, that thickness is suitable; The circumferentially evenly punching in the eddy flow tray upper edge, the outside cyclone of the rotation direction in hole and nozzle is opposite.The axis in hole is not parallel or vertical with the eddy flow tray axis, but becomes miter angle.Like this; After fuel gas is transported to eddy flow tray from the gas circuit top, because the effect in duct on the eddy flow tray has reached the effect identical with traditional cyclone; Strong eddy flow effect takes place in gas; When the fuel gas behind this strand eddy flow continues to the motion of nozzle gas circuit afterbody and finally when spray orifice spray, fuel gas and the quick blending of liquid after the atomizing of dual fuel nozzle oil circuit, and finally get in the combustion chamber that chemical back heating circulates.But have cyclone structure in the fuel gas runner, can effectively reduce the axial velocity of cracking gas, help the blending of fuel gas and air simultaneously.
(2) because gaseous fuel can be with certain curl mass flowing nozzle outlet after flowing through eddy flow tray, the pore of (being nozzle head) adding constant slope at orifice gas fuel outlet place so just can reduce the jet expansion eddy flow loss of cracking gas as far as possible like this.Simultaneously fuel gas there is rectified action, also can plays the effect of cooling protection nozzle.
The dual fuel nozzle of the present invention's design mainly is 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, processed one and formed eddy flow tray mount pad 11 structures, made an eddy flow tray 4 that be complementary with groove diameter, that thickness is suitable in addition than the big slightly groove of gas circuit hollow cylinder pipeline diameter.The course of work of the dual fuel nozzle that the present invention designed is: 1, cracking gas gets into gas circuit ante-chamber 3 from liquid passage inlet 1; Through eight aperture 5 entering gas circuit back cavities 6 that become miter angle with the eddy flow tray central axis even on the eddy flow tray 4, circumferential arrangement; This moment, strong eddy flow phenomenon took place in cracking gas; Cracking gas behind the eddy flow finally flows out in the combustion chamber of the chemical back heating circulatory system through fumarole 7; This moment is because blending has obtained reinforcement, so the burning in the combustion chamber has obtained reinforcement in the chemical back heating circulatory system, has reached the purpose of the more fuel of burning, the shortening length of flame in littler space.2, fuel oil gets into oil circuit from oil circuit import 12, because the oil circuit diameter is little, length is big, the Suo Taier diameter of the fuel oil drop after therefore spraying through nozzle opening 8 is less, atomizing effect is better.
As shown in Figure 2, on eddy flow tray evenly, circumferential arrangement eight apertures, the aperture cross section is a rectangle.
As shown in Figure 3, each aperture on the eddy flow tray all becomes miter angle with the 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 adopt among the present invention is the oblique pore that certain curl is arranged, and rotation direction is identical with its inner eddy flow tray rotation direction, and this design can reduce the loss of cracking gas outlet eddy flow.
Claims (4)
1. one kind is used for the interior spiral-flow type dual fuel nozzle that chemical back heating circulates; Comprise nozzle outer wall, oil line pipe, fumarole, nozzle opening; It is characterized in that: comprise also that eddy flow tray, oil line pipe are installed in the nozzle outer wall and and the nozzle outer wall between form the gas circuit cavity, eddy flow tray is installed between oil line pipe and the nozzle outer wall and with the gas circuit cavity and is divided into gas circuit ante-chamber and gas circuit back cavity front and back two parts; The gas circuit cavity is communicated with fumarole, and oil line pipe is communicated with nozzle opening.
2. a kind of interior spiral-flow type dual fuel nozzle that is used for chemical back heating circulation according to claim 1 is characterized in that: on the described eddy flow tray evenly, eight holes that become miter angle with the eddy flow tray central axis of circumferential arrangement, eight holes connection gas circuit back cavities.
3. a kind of interior spiral-flow type dual fuel nozzle that is used for the chemical back heating circulation according to claim 2, it is characterized in that: the cross section in the hole on the described eddy flow tray is rectangle, circle or oval.
4. according to arbitrary described a kind of interior spiral-flow type dual fuel nozzle that is used for the chemical back heating circulation among the claim 1-3, it is characterized in that: described fumarole had two weeks and is oblique pore, and the fumarole rotation direction is identical with the eddy flow tray rotation direction.
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 true CN102538016A (en) | 2012-07-04 |
| CN102538016B 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980208A (en) * | 2012-11-19 | 2013-03-20 | 哈尔滨工程大学 | Dual-fuel spray nozzle for oil-gas automatic switching in chemical heat return circulation |
| CN103175220A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Dual-fuel nozzle used for chemical regenerative cycle |
| CN104534513A (en) * | 2014-11-27 | 2015-04-22 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Swirling jet mixing nozzle of combustion chamber of gas turbine |
| CN104976640A (en) * | 2014-03-31 | 2015-10-14 | 西门子公司 | Method for replacing a swirler |
| CN105066176A (en) * | 2015-08-14 | 2015-11-18 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
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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 |
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| 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 |
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2012
- 2012-01-11 CN CN201210007506.6A patent/CN102538016B/en not_active Expired - Fee Related
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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 |
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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》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980208A (en) * | 2012-11-19 | 2013-03-20 | 哈尔滨工程大学 | Dual-fuel spray nozzle for oil-gas automatic switching in chemical heat return circulation |
| CN103175220A (en) * | 2013-03-19 | 2013-06-26 | 哈尔滨工程大学 | Dual-fuel nozzle used for chemical regenerative cycle |
| 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 |
| CN104976640A (en) * | 2014-03-31 | 2015-10-14 | 西门子公司 | Method for replacing a swirler |
| CN104976640B (en) * | 2014-03-31 | 2019-09-06 | 西门子公司 | Method for replacing cyclone |
| CN104534513A (en) * | 2014-11-27 | 2015-04-22 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Swirling jet mixing nozzle of combustion chamber of gas turbine |
| 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 |
| CN105066176A (en) * | 2015-08-14 | 2015-11-18 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
| CN105066176B (en) * | 2015-08-14 | 2017-05-24 | 哈尔滨工程大学 | Multi-level double-fuel nozzle for chemical regenerative cycle |
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| Publication number | Publication date |
|---|---|
| CN102538016B (en) | 2014-11-05 |
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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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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20210111 |