CN108980823B - High-efficiency energy-saving combustion nozzle - Google Patents
High-efficiency energy-saving combustion nozzle Download PDFInfo
- Publication number
- CN108980823B CN108980823B CN201811126692.9A CN201811126692A CN108980823B CN 108980823 B CN108980823 B CN 108980823B CN 201811126692 A CN201811126692 A CN 201811126692A CN 108980823 B CN108980823 B CN 108980823B
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- liquid
- communicated
- oil
- outlet
- gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/38—Nozzles; Cleaning devices therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The high-efficiency energy-saving combustion nozzle comprises a nozzle main body, wherein a liquid dividing groove is arranged on the inlet end face of the nozzle main body, and a chamfer is machined at the outlet end of the nozzle main body; the middle part of the end face of the outlet is provided with a liquid spray hole, and a plurality of oil-gas mixing outlets are uniformly arranged on the chamfer along the circumferential direction; solid blades are arranged in each oil-gas mixing outlet; the inside of the nozzle main body is provided with a plurality of groups of oil-gas mixing channels with the same number as the oil-gas mixing outlets, each group of oil-gas mixing channels comprises a gas channel, a liquid channel and a mixing cavity, the inlet of the gas channel is communicated with the air channel, and the outlet of the gas channel is communicated with the mixing cavity; the outlet of the liquid channel is communicated with the mixing cavity; the mixing cavity is communicated with a corresponding oil-gas mixing outlet; the liquid channel and the liquid spray hole are both communicated with the liquid dividing groove, and the liquid dividing groove is communicated with the oil duct. When the combustion nozzle provided by the invention is used for combustion operation, combustion flame is blue, the combustion efficiency is improved by 80% -90%, and coking phenomenon can not occur at the outlet end of the nozzle.
Description
Technical Field
The invention relates to a two-fluid nozzle, in particular to a high-efficiency energy-saving combustion nozzle.
Background
The combustion nozzle is a component capable of atomizing liquid and spraying the liquid at a high speed, the traditional combustion nozzle comprises a gas-liquid conveying pipe, a nozzle body arranged at the end part of the gas-liquid conveying pipe, an oil inlet and an air inlet arranged at the other end part of the gas-liquid conveying pipe, an oil passage communicated with the oil inlet is arranged in the gas-liquid conveying pipe along the axial direction, an annular space formed by the oil passage and the inner wall of the gas-liquid conveying pipe is used as an air passage, and the air passage is communicated with the air inlet; the nozzle body is internally provided with a collision body. The working process is as follows: pressurized liquid oil enters the oil duct through the oil inlet, pressurized gas enters the air duct through the air inlet, hydraulic oil and gas collide and atomize in the nozzle body, and atomized oil drops are used for combustion. Through putting into production, when adopting the traditional combustion nozzle of aforementioned structure to carry out combustion operation, owing to the degree of atomization is insufficient, lead to the combustion flame to appear red and easy coking phenomenon appears at the exit end of nozzle, and the burning is incomplete, combustion efficiency is low.
Disclosure of Invention
The invention aims to provide a gas-liquid mixed type combustion nozzle which can improve the atomization degree of oil gas, so that the combustion efficiency is improved, and the coking phenomenon is avoided.
The aim of the invention is realized by adopting the following technical scheme. The invention provides a high-efficiency energy-saving combustion nozzle, which comprises a nozzle main body 1, wherein the inlet end of the nozzle main body 1 is provided with a boss 101, the boss 101 is fixedly connected with a gas-liquid conveying pipe, an independent oil duct and an independent air duct are arranged in the gas-liquid conveying pipe,
a liquid distributing groove 107 is arranged on the inlet end face of the nozzle main body 1, and a chamfer 102 is processed on the outlet end of the nozzle main body; the middle part of the end face of the outlet is provided with a liquid spray hole 103, and a plurality of oil-gas mixing outlets 104 are uniformly arranged on the chamfer 102 along the circumferential direction; a solid blade 105 is arranged in each oil-gas mixing outlet 104;
the inside of the nozzle main body 1 is provided with a plurality of groups of oil-gas mixing channels 106 with the same number as the oil-gas mixing outlets, each group of oil-gas mixing channels 106 comprises a gas channel 1061, a liquid channel 1062 and a mixing cavity 1063, the gas channel 1061 is composed of a Laval pipe section 1064 and a first convergent section 1065 which are mutually communicated, an inlet of the Laval pipe section is communicated with an air passage, and an outlet of the first convergent section is communicated with the mixing cavity 1063; the liquid channel 1062 is a venturi tube with its outlet in communication with the mixing chamber 1063; mixing chamber 1063 communicates with a corresponding one of the fuel-air mixture outlets 104;
the liquid channel 1062 and the liquid spray hole 103 are both communicated with the liquid dividing groove 107, and the liquid dividing groove 107 is communicated with an oil duct.
Further, the axis of the liquid channel 1062 is aligned with the axis of the corresponding fuel-air mixture outlet 104.
Further, the axis of the Laval pipe segment 1064 is in line with the axis of the first tapered segment 1065; the angle between the axis of the Laval pipe segment 1064 and the axis of the liquid channel 1062 is acute.
Further, the liquid spraying hole 103 is composed of a straight section and a first diverging section which are communicated with each other, and an inlet of the straight section is communicated with the liquid separating groove 107.
Further, the mixing chamber 1063 is formed by a second gradually-expanding section and a second gradually-converging section, which are mutually communicated, and the outlet of the liquid channel 1062 and the outlet of the first gradually-converging section are both communicated with the second gradually-expanding section, and the outlet of the second gradually-converging section is communicated with a corresponding oil-gas mixing outlet 104.
By means of the technical scheme, the efficient energy-saving combustion nozzle is characterized in that the venturi tube section and the Laval tube section are arranged in the nozzle body, and liquid and gas are accelerated before mixing, so that the atomization degree of oil gas is greatly improved. When the combustion nozzle provided by the invention is used for combustion operation, combustion flame is blue, the combustion efficiency is improved by 80% -90%, and coking phenomenon can not occur at the outlet end of the nozzle.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of an energy efficient combustion nozzle of the present invention.
Fig. 2 is a right-side view schematic diagram of fig. 1.
[ Main element symbols description ]
1-nozzle body
101-boss
102-chamfering
103-liquid spray orifice
104-oil-gas mixing outlet
105-solid blade
106-oil-gas mixing channel
1061-gas channel 1062-liquid channel 1063-mixing chamber
1064-Laval pipe segment 1065-first tapered segment
107-liquid separating tank
Detailed Description
The present invention provides an efficient and energy-saving combustion nozzle with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 and 2, an efficient energy-saving combustion nozzle includes a nozzle body 1, a boss 101 is processed at an inlet end of the nozzle body 1, and the boss 101 is fixedly connected with a gas-liquid conveying pipe (not shown), so that liquid oil and gas can enter the nozzle body 1 respectively. The outlet end of the nozzle body 1 is provided with a chamfer 102, the middle part of the outlet end face is provided with a liquid spray hole 103, 12 oil-gas mixing outlets 104 are uniformly distributed on the chamfer 102 along the circumferential direction, and a solid blade 105 is arranged in each oil-gas mixing outlet 104 to ensure that a solid fog field is formed at each oil-gas mixing outlet.
The inside of the gas-liquid conveying pipe is axially provided with an oil duct, and an annular space between the oil duct and the inner wall of the gas-liquid conveying pipe is used as an air passage to realize separate conveying of oil and gas.
The inside of the nozzle main body 1 is provided with 12 groups of oil-gas mixing channels 106, each group of oil-gas mixing channels 106 comprises a gas channel 1061, a liquid channel 1062 and a mixing cavity 1063 for mixing liquid and gas, the gas channel 1061 is composed of a Laval pipe section 1064 and a first convergent section 1065 which are communicated with each other, an inlet of the Laval pipe section is communicated with an air passage in a gas-liquid conveying pipe, and an outlet of the first convergent section is communicated with the mixing cavity 1063; the liquid channel 1062 is a venturi tube with its outlet in communication with the mixing chamber 1063; the outlet of the mixing chamber 1063 communicates with a corresponding one of the fuel and air mixture outlets 104.
The inlet end face of the nozzle main body 1 is concavely provided with a liquid dividing groove 107, the inlets of the 12 liquid channels 1062 and the inlets of the liquid spray holes 103 are communicated with the liquid dividing groove 107, and the liquid dividing groove 107 is communicated with an oil duct in a gas-liquid conveying pipe.
As a further improvement of the present invention, the axis of the liquid channel 1062 is aligned with the axis of the fuel-air mixture outlet 104 and forms an acute angle with the axis of the laval tube segment 1064.
As a further improvement of the present invention, the liquid spraying hole 103 is composed of a straight section and a first diverging section, so as to fill the middle space and avoid the formation of a hollow fog field by the combustion nozzle.
As a further improvement of the present invention, the mixing chamber 1063 is formed by a second gradually-decreasing section and a second gradually-increasing section, where the second gradually-decreasing section is respectively communicated with the first gradually-decreasing section 1065 and the liquid channel 1062, and the second gradually-decreasing section is communicated with a corresponding one of the oil-gas mixing outlets 104.
The working principle of the high-efficiency energy-saving combustion nozzle is as follows: pressurized liquid oil conveyed by the gas-liquid conveying pipe flows into the liquid dividing groove 107 and is divided into 13 paths, wherein 1 path is ejected from the liquid jet holes 103, and the other 12 paths enter the corresponding mixing cavities 1063 after being accelerated through 12 liquid channels. Meanwhile, the pressurized gas conveyed by the gas-liquid conveying pipe enters corresponding mixing cavities 1063 after being accelerated by 12 gas channels 1061, the accelerated liquid and gas are mixed and atomized in the mixing cavities, and finally are sprayed out from the gas-oil mixing outlets under the action of the solid blades 105 to form a plurality of solid fog fields. Meanwhile, in order to avoid the hollow phenomenon of the nozzle, the space in the middle of the outlet end (the area which is not covered by 12 oil-gas mixing outlets) is filled with the liquid sprayed by the liquid spraying holes 103, so that a large solid fog field is formed in a matching way.
When the combustion nozzle provided by the invention is used for operation after being put into production, the oil gas atomization degree is greatly improved, the combustion flame is blue, the combustion efficiency can be improved by 80% -90%, and the coking phenomenon can not occur at the outlet end of the nozzle.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention will fall within the scope of the technical principles of the present invention, as will be apparent to those skilled in the art without departing from the scope of the technical principles of the present invention.
Claims (3)
1. An efficient energy-saving combustion nozzle comprises a nozzle main body (1), wherein a boss (101) is arranged at the inlet end of the nozzle main body (1), the boss (101) is fixedly connected with a gas-liquid conveying pipe, an independent oil duct and an independent air duct are arranged in the gas-liquid conveying pipe,
the method is characterized in that: a liquid distributing groove (107) is arranged on the inlet end face of the nozzle main body (1), and a chamfer (102) is processed at the outlet end of the liquid distributing groove; the middle part of the outlet end face of the nozzle main body (1) is provided with a liquid spray hole (103), and a plurality of oil-gas mixing outlets (104) are uniformly arranged on the chamfer (102) along the circumferential direction; a solid blade (105) is arranged in each oil-gas mixing outlet (104);
a plurality of groups of oil-gas mixing channels (106) with the same number as the oil-gas mixing outlets are arranged in the nozzle main body (1), each group of oil-gas mixing channels (106) comprises a gas channel (1061), a liquid channel (1062) and a mixing cavity (1063), the gas channels (1061) are composed of Laval pipe sections (1064) and first convergent sections (1065) which are communicated with each other, an inlet of each Laval pipe section is communicated with an air passage, and an outlet of each first convergent section is communicated with the mixing cavity (1063); the liquid channel (1062) is a venturi tube, and the outlet of the liquid channel is communicated with the mixing cavity (1063); the mixing cavity (1063) is communicated with a corresponding oil-gas mixing outlet (104); the axis of the liquid channel (1062) is in a straight line with the axis of the corresponding oil-gas mixing outlet (104), the axis of the Laval pipe section (1064) is in a straight line with the axis of the first tapered section (1065), and an included angle between the axis of the Laval pipe section (1064) and the axis of the liquid channel (1062) is an acute angle;
the liquid channel (1062) and the liquid spray hole (103) are both communicated with the liquid separating groove (107), and the liquid separating groove (107) is communicated with the oil duct.
2. The high efficiency energy saving combustion nozzle of claim 1, wherein: the liquid spray hole (103) consists of a straight section and a first divergent section which are communicated with each other, and an inlet of the straight section is communicated with the liquid separating groove (107).
3. The high efficiency energy saving combustion nozzle of claim 1, wherein: the mixing cavity (1063) is composed of a second gradually-expanding section and a second gradually-converging section which are mutually communicated, the outlet of the liquid channel (1062) and the outlet of the first gradually-converging section are both communicated with the second gradually-expanding section, and the outlet of the second gradually-converging section is communicated with a corresponding oil-gas mixing outlet (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811126692.9A CN108980823B (en) | 2018-09-26 | 2018-09-26 | High-efficiency energy-saving combustion nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811126692.9A CN108980823B (en) | 2018-09-26 | 2018-09-26 | High-efficiency energy-saving combustion nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980823A CN108980823A (en) | 2018-12-11 |
| CN108980823B true CN108980823B (en) | 2023-10-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811126692.9A Active CN108980823B (en) | 2018-09-26 | 2018-09-26 | High-efficiency energy-saving combustion nozzle |
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Citations (12)
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|---|---|---|---|---|
| GB1293360A (en) * | 1968-12-23 | 1972-10-18 | Dumag Offen Handels Ges Dr Tec | Method of and apparatus for mixing compressible fluid media |
| GB1350115A (en) * | 1970-10-13 | 1974-04-18 | Siderurgie Fse Inst Rech | Method of introducing auxiliary fuels to blast furnaces and tuyere for use in this method |
| US4272499A (en) * | 1979-11-28 | 1981-06-09 | Lone Star Steel Company | Process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases |
| WO1990005583A1 (en) * | 1988-11-22 | 1990-05-31 | Dunne Miller Weston Limited | Liquid-gas mixing device |
| US5813847A (en) * | 1995-10-02 | 1998-09-29 | Abb Research Ltd. | Device and method for injecting fuels into compressed gaseous media |
| US6196204B1 (en) * | 1995-03-09 | 2001-03-06 | Robert Bosch Gmbh | Method and device for forming a turbulent fuel-air mixture in the combustion chamber of each cylinder of an internal combustion engine controlled with valve timing |
| CN201815411U (en) * | 2010-10-22 | 2011-05-04 | 合肥辰泰安全设备有限责任公司 | Double-fluid atomization nozzle |
| JP2011092813A (en) * | 2009-10-27 | 2011-05-12 | Takuma Co Ltd | Two-fluid spray nozzle |
| CN103115359A (en) * | 2012-12-15 | 2013-05-22 | 中国航天科技集团公司第六研究院第十一研究所 | Gas-assisted atomizing nozzle of atomization hyperviscous fluid |
| CN103381398A (en) * | 2013-08-08 | 2013-11-06 | 天津市美好生活科技有限公司 | Inside-mixing atomizing nozzle device |
| CN206386930U (en) * | 2017-01-11 | 2017-08-08 | 常州刘国钧高等职业技术学校 | Combustor fuel oil nozzle structure |
| CN208936149U (en) * | 2018-09-26 | 2019-06-04 | 洛阳帝博石化装备有限公司 | A kind of high-efficiency and energy-saving type burner noz(zle) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1017673A3 (en) * | 2007-07-05 | 2009-03-03 | Fib Services Internat | METHOD AND DEVICE FOR PROJECTING PULVERULENT MATERIAL INTO A CARRIER GAS. |
| EP2190555B1 (en) * | 2007-09-04 | 2012-04-25 | Shell Internationale Research Maatschappij B.V. | Spray nozzle manifold and process for quenching a hot gas using such an arrangement |
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2018
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1293360A (en) * | 1968-12-23 | 1972-10-18 | Dumag Offen Handels Ges Dr Tec | Method of and apparatus for mixing compressible fluid media |
| GB1350115A (en) * | 1970-10-13 | 1974-04-18 | Siderurgie Fse Inst Rech | Method of introducing auxiliary fuels to blast furnaces and tuyere for use in this method |
| US4272499A (en) * | 1979-11-28 | 1981-06-09 | Lone Star Steel Company | Process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases |
| WO1990005583A1 (en) * | 1988-11-22 | 1990-05-31 | Dunne Miller Weston Limited | Liquid-gas mixing device |
| US6196204B1 (en) * | 1995-03-09 | 2001-03-06 | Robert Bosch Gmbh | Method and device for forming a turbulent fuel-air mixture in the combustion chamber of each cylinder of an internal combustion engine controlled with valve timing |
| US5813847A (en) * | 1995-10-02 | 1998-09-29 | Abb Research Ltd. | Device and method for injecting fuels into compressed gaseous media |
| JP2011092813A (en) * | 2009-10-27 | 2011-05-12 | Takuma Co Ltd | Two-fluid spray nozzle |
| CN201815411U (en) * | 2010-10-22 | 2011-05-04 | 合肥辰泰安全设备有限责任公司 | Double-fluid atomization nozzle |
| CN103115359A (en) * | 2012-12-15 | 2013-05-22 | 中国航天科技集团公司第六研究院第十一研究所 | Gas-assisted atomizing nozzle of atomization hyperviscous fluid |
| CN103381398A (en) * | 2013-08-08 | 2013-11-06 | 天津市美好生活科技有限公司 | Inside-mixing atomizing nozzle device |
| CN206386930U (en) * | 2017-01-11 | 2017-08-08 | 常州刘国钧高等职业技术学校 | Combustor fuel oil nozzle structure |
| CN208936149U (en) * | 2018-09-26 | 2019-06-04 | 洛阳帝博石化装备有限公司 | A kind of high-efficiency and energy-saving type burner noz(zle) |
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| Publication number | Publication date |
|---|---|
| CN108980823A (en) | 2018-12-11 |
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Inventor after: Bai Lixiang Inventor before: Bailixiang |
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