CN111829010B - Carbon deposition prevention fuel spray cap - Google Patents
Carbon deposition prevention fuel spray cap Download PDFInfo
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- CN111829010B CN111829010B CN202010506721.5A CN202010506721A CN111829010B CN 111829010 B CN111829010 B CN 111829010B CN 202010506721 A CN202010506721 A CN 202010506721A CN 111829010 B CN111829010 B CN 111829010B
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- shell
- opening
- fuel
- carbon deposition
- fuel nozzle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
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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 invention relates to the field of pneumatic fuel nozzles, and discloses a carbon deposition prevention fuel nozzle cap which comprises a shell, wherein the shell forms a containing cavity for locking a fuel nozzle assembly and an opening leading to the fuel nozzle, at least two pairs of first inclined holes are uniformly formed in an annular shape, an air swirler is also arranged in the containing cavity of the shell, the air swirler is provided with an annular platform which is coaxial with the fuel nozzle and supports the fuel nozzle, at least one pair of supporting legs are arranged around the air swirler, the annular platform supports the fuel nozzle and enables an annular gap to be reserved between the fuel nozzle and the opening, and at least one pair of supporting legs form an air flow channel communicating the annular gap and the containing cavity. The aim of reducing or removing the carbon deposition is achieved; and the purposes of cooling the shell and removing carbon deposition are further achieved through the two pairs of second inclined holes.
Description
Technical Field
The invention relates to the field of pneumatic fuel nozzles, in particular to a carbon deposition prevention fuel nozzle cap.
Background
A general fuel nozzle is conventionally called an oil nozzle, and is widely used in a burner of a heating apparatus such as a thermal power device and an industrial furnace, and liquid fuels such as diesel oil, kerosene, heavy oil, alcohol fuel, and the like can be used. The fuel nozzle injects fuel into the combustion chamber to be mixed, atomized and combusted with other media such as compressed air and the like. The power of fuel injection and atomization of the fuel nozzle is formed by pressurization of an oil pump or mixing of high-pressure air flows. At present, when the fuel nozzle is used, the condition that carbon deposition is blocked due to insufficient fuel combustion can occur in a nozzle. The carbon deposition blockage can cause uneven temperature and performance reduction of a combustion outlet, and can cause ablation of a combustion chamber and a turbine part under severe conditions, most of the prior art adopts a cooling system to cool the temperature of an oil channel in a nozzle or adopts manual work to disassemble an oil nozzle periodically to clean the carbon deposition at the nozzle, and the cooling system has a complex structure and higher equipment cost; the manual regular cleaning is adopted, so that the labor intensity is high, the working efficiency is low, and the economic benefit is poor, and therefore, a fuel oil spray cap capable of preventing carbon deposition is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a carbon deposition prevention fuel spray cap, which aims to solve the problems that the cooling system adopted in the prior art is complex in structure and higher in equipment cost; the manual regular cleaning is adopted, so that the technical problems of high labor intensity, low working efficiency and poor economic benefit are solved.
In order to solve the technical problems, the invention provides the following technical scheme: a fuel spray cap for preventing carbon deposition is provided with a shell, wherein the shell forms a containing cavity for locking a fuel spray head assembly and an opening leading to a fuel spray head, the opening can be coaxial and matched with the fuel spray head, the shell surrounds the opening as a center, at least two pairs of first inclined holes are uniformly formed in an annular mode, the axis of each first inclined hole is intersected with the axis of the opening and forms an acute angle, two ends of each first inclined hole respectively lead to the front end of the shell and the oblique rear side of the shell, and the middle section of each first inclined hole is communicated with the containing cavity of the shell; the air swirler is provided with an annular platform which is coaxial with the fuel nozzle and supports the fuel nozzle, at least one pair of supporting legs which support the fuel nozzle in the accommodating cavity are arranged around the air swirler, the annular platform supports the fuel nozzle and enables an annular gap to be reserved between the fuel nozzle and the opening, and the at least one pair of supporting legs form an air flow channel which is communicated with the annular gap and the accommodating cavity.
Preferably, the shell surrounds the opening as a center, at least two pairs of second inclined holes are annularly and uniformly formed in the inner side of the first inclined hole, the axis of each second inclined hole is intersected with the axis of the opening and also forms an acute angle, and two ends of each second inclined hole are respectively communicated with the front end of the shell and the containing cavity of the shell.
Preferably, the shell forms a concave conical surface structure outside the opening.
Preferably, the inner wall of the shell is provided with mounting threads for locking the fuel nozzle assembly.
Preferably, the casing is provided with at least two pairs of flow deflectors which are uniformly and circumferentially fixed along the circumferential direction of the casing outside the opening.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the nozzle assembly works, fuel oil is atomized and sprayed out from the opening of the shell, the air flow speed is high, so that the air pressure at the front end of the opening of the shell is low, air can enter the cavity and the air swirler from the front end of the first inclined hole according to the principle of air pressure difference, and under the action of the at least one pair of supporting legs arranged on the air swirler, the at least one pair of supporting legs form an air flow channel communicated with the annular gap and the cavity, so that the air sequentially passes through the cavity, the air flow channel, the annular gap and the opening from the front end of the first inclined hole to form an air circulation rotational flow effect, the atomization of the fuel oil can be enhanced, the flow series flow of the air can be enhanced, the integral cooling effect of the shell and the blowing of the opening on the front end face of the shell are realized, and the aim of reducing or removing carbon deposition is achieved; meanwhile, at least two pairs of second inclined holes are uniformly and annularly formed in the inner side of the first inclined hole, and the number of air flowing paths is increased under the action that two ends of each second inclined hole are respectively communicated with the front end of the shell and the containing cavities of the shell, so that the purposes of cooling the shell and removing carbon deposition are further achieved.
(2) Utilize the casing to be provided with in the opening outside at least two pairs along its circumferencial direction evenly around fixed water conservancy diversion piece, can realize cutting apart and surging through opening atomizing spun fuel, realize strengthening atomizing effect, further improve holistic practicality.
Drawings
FIG. 1 is a plan sectional view of the present invention mounted to a showerhead assembly;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a top view of the present invention;
fig. 4 is a cross-sectional view taken along line a-a of fig. 3.
The reference numbers in the figures are:
the air cyclone comprises a shell 1, a cavity 2, an opening 3, a first inclined hole 4, an air cyclone 5, a support leg 6, an annular gap 7, a second inclined hole 8, a mounting thread 9 and a flow deflector 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Example one
Referring to fig. 1 to 4, the fuel nozzle cap for preventing carbon deposition is disclosed, and the fuel nozzle cap has a housing 1, the housing 1 forms a cavity 2 for locking a fuel nozzle assembly and an opening 3 leading to the fuel nozzle, the opening 3 can be coaxial and matched with the fuel nozzle, the housing 1 surrounds the opening 3 as a center, four pairs of first inclined holes 4 are uniformly formed in an annular shape, the axis of each first inclined hole 4 is intersected with the axis of the opening 3 and forms an acute angle, two ends of each first inclined hole 4 respectively lead to the front end of the housing 1 and the oblique rear side of the housing 1, and the middle section of each first inclined hole 4 is communicated with the cavity 2 of the housing 1; still have an air swirler 5 in the appearance chamber 2 of casing 1, air swirler 5 has and is coaxial with the fuel nozzle, and the bearing the annular platform of fuel nozzle, be equipped with two pairs around the air swirler 5 will the annular platform supports the landing leg 6 in appearance chamber 2, just the annular platform bearing fuel nozzle makes and leaves annular clearance 7 between fuel nozzle and the opening 3, two pairs landing leg 6 forms the air flow way that communicates annular clearance 7 and appearance chamber 2.
Preferably, the shell 1 surrounds the opening 3 as a center, four pairs of second inclined holes 8 are annularly and uniformly formed in the inner side of the first inclined hole 4, the axis of each second inclined hole 8 is intersected with the axis of the opening 3 and also forms an acute angle, and two ends of each second inclined hole 8 are respectively communicated with the front end of the shell 1 and the containing cavity 2 of the shell 1, so that the number of air flowing paths is increased, and the purposes of cooling the shell 1 and removing carbon deposition are further achieved.
Preferably, the casing 1 forms an inwards concave conical surface structure outside the opening 3, so that the air flow gathering effect can be further improved, and the purposes of improving the cooling of the casing 1 and removing carbon deposition are achieved.
Preferably, the inner wall of the shell 1 is provided with mounting threads 9, so that the whole shell 1 can be conveniently and quickly disassembled and assembled.
Preferably, casing 1 is provided with four in the opening 3 outside and evenly encircles fixed water conservancy diversion piece 10 along its circumferencial direction, can realize cutting apart and surging opening 3 atomizing spun fuel, realizes strengthening atomizing effect, further improves holistic practicality.
When the spray head assembly works, the fuel is atomized and sprayed out from the opening 3 of the shell 1, so that the air pressure at the front end of the opening 3 of the shell 1 is small, air will enter the chamber 2 and the air swirler 5 from the front end of the first inclined hole 4 according to the principle of air pressure difference, by arranging at least one pair of support legs 6 on the air swirler 5, and forming an air flow passage for communicating the annular gap 7 with the cavity 2 by the at least one pair of support legs 6, therefore, air passes through the cavity 2, the air flow channel, the annular gap 7 and the opening 3 from the front end of the first inclined hole 4 in sequence to form an air circulation rotational flow effect, so that not only can the atomization of fuel oil be enhanced, but also the flow series flow of the air can be enhanced, the overall cooling effect of the shell 1 and the blowing of the opening 3 on the front end face of the shell 1 are realized, and the aim of reducing or removing carbon deposition is achieved; meanwhile, at least two pairs of second inclined holes 8 are uniformly and annularly formed in the inner side of the first inclined hole 4, and the two ends of each second inclined hole 8 are respectively communicated to the front end of the shell 1 and the cavity 2 of the shell 1, so that the number of air flowing ways is increased, and the purposes of cooling the shell 1 and removing carbon deposition are further achieved; utilize casing 1 to be provided with in the opening 3 outside at least two pairs along its circumferencial direction evenly around fixed water conservancy diversion piece 10, can realize cutting apart and surging through opening 3 atomizing spun fuel, realize strengthening atomizing effect, further improve holistic practicality.
Example two
The difference from the first embodiment is that in the present embodiment, two pairs of the first inclined holes 4, the second inclined holes 8 and the flow deflectors 10 are respectively provided, and one pair of the support legs 6 is provided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A fuel spray cap for preventing carbon deposition is provided with a shell (1), the shell (1) forms a containing cavity (2) for locking a fuel spray head component and an opening (3) leading to the fuel spray head, the opening (3) can be coaxial and matched with the fuel spray head, and is characterized in that,
the shell (1) surrounds the opening (3) as a center, at least two pairs of first inclined holes (4) are uniformly formed in an annular mode, the axis of each first inclined hole (4) is intersected with the axis of the opening (3) and forms an acute angle, two ends of each first inclined hole (4) respectively lead to the front end of the shell (1) and the oblique rear side of the shell (1), and the middle section of each first inclined hole (4) is communicated with the containing cavity (2) of the shell (1);
the fuel sprayer is characterized in that an air swirler (5) is further arranged in the accommodating cavity (2) of the shell (1), the air swirler (5) is provided with an annular platform which is coaxial with the fuel sprayer and supports the fuel sprayer, at least one pair of supporting legs (6) which support the annular platform in the accommodating cavity (2) are arranged around the air swirler (5), the annular platform supports the fuel sprayer and enables an annular gap (7) to be reserved between the fuel sprayer and the opening (3), and at least one pair of supporting legs (6) form an air flow channel which communicates the annular gap (7) with the accommodating cavity (2);
the shell (1) surrounds the opening (3) as a center, at least two pairs of second inclined holes (8) are annularly and uniformly formed in the inner side of the first inclined hole (4), the axis of each second inclined hole (8) is intersected with the axis of the opening (3) and is also in an acute angle, and two ends of each second inclined hole (8) are respectively communicated with the front end of the shell (1) and the cavity (2) of the shell (1).
2. The carbon deposition prevention fuel nozzle cap as recited in claim 1, characterized in that the housing (1) is formed with an inwardly concave conical structure outside the opening (3).
3. The carbon deposition prevention fuel spray cap as recited in claim 1, characterized in that the inner wall of the housing (1) is provided with a mounting thread (9) for locking the fuel spray head assembly.
4. The carbon deposition prevention fuel nozzle cap as recited in claim 1, characterized in that the housing (1) is provided with at least two pairs of flow deflectors (10) uniformly surrounding and fixed along the circumferential direction of the housing outside the opening (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506721.5A CN111829010B (en) | 2020-06-05 | 2020-06-05 | Carbon deposition prevention fuel spray cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506721.5A CN111829010B (en) | 2020-06-05 | 2020-06-05 | Carbon deposition prevention fuel spray cap |
Publications (2)
| Publication Number | Publication Date |
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| CN111829010A CN111829010A (en) | 2020-10-27 |
| CN111829010B true CN111829010B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010506721.5A Active CN111829010B (en) | 2020-06-05 | 2020-06-05 | Carbon deposition prevention fuel spray cap |
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| CN (1) | CN111829010B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204534569U (en) * | 2014-12-15 | 2015-08-05 | 中国燃气涡轮研究院 | A kind of take ethanol as can burner's gas generator of fuel |
| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
| 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 |
| CN108224478A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | Inhibit the high temperature rise combustor head of Venturi tube carbon distribution |
| CN109140501A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | The nozzle arrangements of the centrifugal band bilayer gas hood of the double spouts of double oil circuits |
| CN111059574A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院工程热物理研究所 | Swirl cup type dual-fuel air atomizing nozzle structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4959524B2 (en) * | 2007-11-29 | 2012-06-27 | 三菱重工業株式会社 | Burning burner |
-
2020
- 2020-06-05 CN CN202010506721.5A patent/CN111829010B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204534569U (en) * | 2014-12-15 | 2015-08-05 | 中国燃气涡轮研究院 | A kind of take ethanol as can burner's gas generator of fuel |
| CN105783032A (en) * | 2016-05-18 | 2016-07-20 | 贵州航空发动机研究所 | Wide-range fuel oil nozzle suitable for overhead work |
| 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 |
| CN109140501A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | The nozzle arrangements of the centrifugal band bilayer gas hood of the double spouts of double oil circuits |
| CN108224478A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | Inhibit the high temperature rise combustor head of Venturi tube carbon distribution |
| CN111059574A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院工程热物理研究所 | Swirl cup type dual-fuel air atomizing nozzle structure |
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| Publication number | Publication date |
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| CN111829010A (en) | 2020-10-27 |
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