CN211424379U

CN211424379U - Diesel burner and burner thereof

Info

Publication number: CN211424379U
Application number: CN201922377745.0U
Authority: CN
Inventors: 潘峰; 汪鎏; 朱晨军; 廖锋
Original assignee: Keda Clean Energy Co Ltd
Current assignee: Keda Clean Energy Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-04
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a diesel burner and nozzle thereof belongs to combustor technical field. The burner of the diesel burner comprises a shell with an inner cavity as a combustion-supporting air channel, wherein a diesel pipeline, an atomized air pipeline and an atomization cavity are arranged in the inner cavity of the shell; the atomized gas pipeline is sleeved outside the diesel oil pipeline, and an atomized gas channel is formed between the atomized gas pipeline and the diesel oil pipeline; one end of the atomization cavity is provided with an air inlet and an oil inlet, and the other end of the atomization cavity is provided with an atomization nozzle close to the outlet of the shell; the oil outlet end of the diesel oil pipeline is connected with the oil inlet of the atomization cavity; the air outlet end of the atomization air pipeline is communicated with the atomization cavity of the atomization cavity through the air inlet of the atomization cavity. The utility model discloses can form oil vapor through atomizing liquid fuel, oil vapor burns after mixing with combustion-supporting wind, has strengthened the mixed degree of combustion-supporting wind with diesel oil greatly, makes the diesel oil burning more abundant.

Description

Diesel burner and burner thereof

Technical Field

The utility model belongs to the technical field of the combustor, more specifically say, relate to a diesel burner and nozzle thereof.

Background

The diesel oil burner has an irreplaceable position, the combustion condition of the diesel oil burner depends on the mixing degree of the diesel oil and the oxygen, and the existing burner has the defects of poor adjustability and incapability of being suitable for different types of combustion modes.

Traditional diesel oil combustor is usually with diesel oil through direct and oxygen after the injection mix the postignition burning, because diesel oil and oxygen mixed degree are not good, oxygen is insufficient during the burning, causes the burning insufficient easily, the unstable condition of burning, the black cigarette that emits pollutes greatly, does not accord with the standard of clean energy.

Aiming at the problems of poor adjustability and unstable ignition combustion of the diesel combustor, some of the prior art makes corresponding improvements, for example, the Chinese patent application numbers are as follows: cn201820039959.x, published as: 2018, a practical novel patent application of 24 days in 4 months discloses a diesel burner, which comprises a burner shell, a tangential wind shell, a fixed cylinder, an impeller and an adjusting screw rod, wherein the burner shell is a cylindrical shell; the tangential air shell is provided with an adjusting air pipe, and the adjusting air pipe comprises an adjusting pipe body, an adjusting air pipe input end and an adjusting air pipe output end; the output end of the adjusting air pipe is in a pipe shape, and one end of the adjusting air pipe close to the adjusting pipe body is in tangent connection with the inner end of the adjusting pipe body; the central axis of the output end of the adjusting air pipe forms an included angle of 45 degrees with the tangent line, and the tail end of the output end of the adjusting air pipe is provided with an adjusting valve for adjusting the opening and closing of the output end of the adjusting air pipe and the size of the opening and closing of the output end of the adjusting air pipe. The disadvantages of this solution are: adjust the tuber pipe and adjust combustion-supporting wind and mix with liquid fuel, cause liquid fuel and oxygen to mix inadequately easily, oxygen is insufficient when easily causing the burning, leads to the fuel burning insufficient, and the condition of smoking black smoke causes environmental pollution, the extravagant condition of fuel.

Disclosure of Invention

1. Problems to be solved

The utility model provides a diesel burner and nozzle thereof, the insufficient burning problem that the liquid fuel and the combustion-supporting wind of aim at among the current diesel burner of solution mixed and lead to inadequately. The utility model discloses a diesel burner becomes tiny oil through spraying the dispersion with liquid fuel and drips the back, and oil after the dispersion drips and forms oil steam through the atomizing, and final oil steam mixes with combustion-supporting wind, ignites the burning, has strengthened the mixed degree of combustion-supporting wind with diesel oil greatly, makes the diesel oil burning abundant.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A diesel burner nozzle comprises a shell with an inner cavity as a combustion-supporting air channel, wherein an atomized air pipeline, a diesel pipeline and an atomized cavity are arranged in the inner cavity of the shell; the atomized gas pipeline is sleeved outside the diesel oil pipeline, and an atomized gas channel is formed between the atomized gas pipeline and the diesel oil pipeline; the inner cavity of the atomization cavity is an atomization cavity, one end of the atomization cavity is provided with an air inlet and an oil inlet, and the other end of the atomization cavity is provided with an atomizing nozzle close to the outlet of the shell; the oil outlet end of the diesel oil pipeline is connected with the oil inlet of the atomization cavity; the air outlet end of the atomization air pipeline is communicated with the atomization cavity of the atomization cavity through the air inlet of the atomization cavity.

Furthermore, the central axis of the air inlet of the atomizing cavity and the axis of the atomizing air pipeline, and the central axis of the atomizing nozzle of the atomizing cavity and the axis of the atomizing air pipeline form included angles of 30-60 degrees.

Furthermore, the aperture of the air inlet of the atomization cavity is phi 5-10 mm; the aperture of the spray nozzle of the atomization cavity is phi 2.5-6 mm.

Furthermore, the atomization cavity is sequentially divided into an oil inlet connecting section, a conical air inlet section, a circular tube main body section and a conical spraying section from one end to the other end; the oil inlet of the atomization cavity is positioned in the oil inlet connecting section, the air inlet is positioned on the conical air inlet section, and the atomizing nozzle is positioned on the conical atomizing section.

Furthermore, the oil inlet connecting section of the atomizing cavity is inserted into the diesel oil pipeline and is limited by a flange arranged outside the oil inlet connecting section.

Furthermore, the circular tube main body section of the atomizing cavity is formed by extending the tube wall of the atomizing gas pipeline.

Further, the housing is divided into an inner wall and an outer wall, and a cooling water passage is formed between the inner wall and the outer wall.

Furthermore, swirl vanes are arranged outside the atomizing air pipeline in the inner cavity of the shell close to the outlet, and divide the combustion-supporting air channel into a left part and a right part; the swirl angle of the swirl vanes is 15-30 degrees.

Furthermore, the diameter of the pipe orifice at the tail end of the shell is gradually reduced to form a tapered closing-in part, and the taper of the closing-in part is 0-45 degrees.

The diesel burner comprises a burner, and the burner adopts any one of the diesel burner burners in the above schemes.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a make diesel oil combustion effect better, be provided with atomizing gas pipeline and atomizing cavity in the nozzle, diesel oil and atomizing gas atomize to diesel oil in letting in atomizing cavity through diesel oil pipeline and atomizing gas pipeline respectively jointly, get into atomizing cavity's in-process via the oil inlet at diesel oil with high speed, because the surface tension of liquid oil and atomizing gas's resistance, the diesel oil of spouting is dispersed into tiny oil and drips and disperses in atomizing cavity, and then can carry out the intensive mixing with atomizing gas, atomizing gas can be with dripping atomizing into oil steam, thereby realize the abundant atomizing to diesel oil. The diesel oil atomized by the atomized gas is changed from liquid oil into oil vapor, and then is mixed with combustion-supporting air to be ignited and combusted, so that the diesel oil can be combusted more fully.

(2) The utility model discloses a be provided with the air inlet of a plurality of small pass on atomizing cavity's the toper section of admitting air, the axis of air inlet and atomizing gas pipeline's axis contained angle are 30 ~ 60, can control atomizing gas spraying's scope through the angle of adjustment air inlet, the utility model discloses well air inlet's axis sets up with the toper section of admitting air is perpendicular, can further enlarge atomizing gas and spout the scope in the atomizing cavity through the cooperation design of toper section of admitting air and air inlet, more is favorable to dispersing diesel oil and is tiny liquid drop to fully mixing with oil drop, make diesel oil's atomization effect better; the atomizing cavity is characterized in that a plurality of small-hole-shaped atomizing nozzles are arranged on the conical atomizing section of the atomizing cavity, the included angle between the central axis of each atomizing nozzle and the axis of the atomizing air pipeline is 30-60 degrees, the spraying range of atomized diesel oil at the outlet of the shell can be adjusted by adjusting the angle of the conical atomizing section and the angle of each atomizing nozzle, so that the diameter of combustion flame can be adjusted, different forms of combustion flame can be obtained, and meanwhile, the sprayed atomized diesel oil can also organize the flow field at the outlet of the shell to achieve the purpose of strengthening combustion.

(3) In the utility model, the air inlet and the atomizing nozzle are designed into the small hole type, and the smaller the diameter of the small hole is, the smaller the pressure loss is, so that the diameter of the air inlet is designed into 5-10 mm, the pressure loss of the atomizing gas sprayed into the atomizing cavity can be reduced, and the amount of the atomizing gas sprayed into the atomizing cavity can be controlled by adjusting the diameter of the air inlet, thereby controlling the atomizing effect of diesel oil; the diameter design of atomising mouth is 2.5 ~ 6 millimeters, and the design of this aperture can reduce the pressure loss that the atomizing diesel oil spouts atomizing cavity. And the amount of the sprayed atomized diesel can be controlled by adjusting the diameter of the spray nozzle, so that the range and the diameter of combustion flame and the combustion degree of the atomized diesel can be controlled.

(4) The utility model discloses a pipe main part section of atomizing cavity is that the pipe wall of atomizing gas pipeline extends the formation, and this kind of design is easily processed, and wherein, oil feed linkage segment and diesel oil pipeline welding or threaded connection carry on spacingly through the outer flange of oil feed linkage segment to the diesel oil pipeline.

(5) The utility model discloses a combustor nozzle is equipped with the cooling water passageway, and the cooling water can absorb the heat, cools down to the nozzle, prevents that the nozzle temperature is too high, causes the nozzle to damage, helps prolonging the life of nozzle.

(6) The utility model discloses a swirl blade that sets up in the diesel burner nozzle not only can play the effect of fixed stay to the atomizing cavity, can control the wind direction of combustion-supporting wind through the quantity of adjustment swirl blade and swirl blade's whirl angle moreover to can effectual control burning flame's length, improve the stability of burning.

(7) The utility model discloses the tapering of the terminal toper closing in mouth of casing is 0 ~ 45, can change the wind direction of combustion-supporting wind through the cone angle that changes the closing in mouth, cooperates the setting of whirl blade simultaneously, diameter and the form that can corresponding change burning flame.

Drawings

FIG. 1 is a cross-sectional view of a diesel combustor burner of the present invention;

fig. 2 is a schematic sectional view of the atomizing chamber of the diesel burner of the present invention.

In the figure: 1. a housing; 2. a diesel pipeline; 3. an atomizing gas conduit; 4. a combustion-supporting air passage; 5. an atomization chamber; 6. an oil inlet; 7. an air inlet; 8. a spray nozzle; 9. an oil inlet connecting section; 10. an air intake section; 11. a flange; 12. a main body section of a round tube; 13. a spraying section; 14. a swirl vane; 15. a closing-in part.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Examples

In the existing diesel combustor, liquid diesel is directly sprayed out from the diesel pipeline 2 and is mixed and combusted with combustion-supporting air, so that the diesel and the combustion-supporting air are not sufficiently mixed, and the combustion effect is poor. In order to make more abundant, the combustion effect of diesel oil and combustion-supporting wind mixture better, this embodiment provides a diesel oil burner, and this diesel oil burner has carried out optimal design to the nozzle: be provided with diesel oil pipeline 2, atomizing air duct 3 and atomizing cavity 5 in the casing 1 of nozzle, diesel oil and atomizing gas let in atomizing cavity 5 jointly through diesel oil pipeline 2 and atomizing air duct 3 respectively and mix, atomize into liquid diesel oil steam, spout oil steam from atomizing cavity 5 again and mix the burning with combustion-supporting wind for the combustion effect is better.

The structure schematic diagram of the diesel burner nozzle of the embodiment is shown in fig. 1, the inner cavity of the shell 1 is a combustion-supporting air channel 4, and the diesel pipeline 2, the atomized air pipeline 3 and the atomized cavity 5 are arranged in the inner cavity of the shell 1. The diameter of atomizing air pipe 3 is greater than the diameter of diesel oil pipeline 2, atomizing air pipe 3 overlaps outside diesel oil pipeline 2, forms atomizing air passage between the two, is filled into atomizing gas in the atomizing air passage, and atomizing gas can be pressed gas with multiple pressure such as compressed air, compressed nitrogen and steam. An oil inlet 6 and an air inlet 7 are arranged at one end of the atomization cavity 5, the oil inlet 6 of the atomization cavity 5 is connected with the oil outlet end of the diesel pipeline 2, and diesel in the diesel pipeline 2 can flow into the atomization cavity 5 through the oil inlet 6; an air inlet 7 of the atomizing cavity 5 is connected with an air outlet end of the atomizing air pipeline 3, and atomizing air in the atomizing air pipeline 3 can be introduced into the atomizing cavity 5 through the air inlet 7; the other end of the atomizing cavity 5 is provided with an atomizing nozzle 8, and the atomizing nozzle 8 is close to the outlet of the shell 1.

This kind of diesel burner nozzle structure that this embodiment provided, in the device operation in-process, diesel oil gets into atomizing cavity 5 via oil inlet 6 with high speed, because atomizing gas's in atomizing cavity 5 resistance and the inside perturbation effect when flowing through the orifice, the diesel oil of spouting is dispersed into tiny oil and drips and disperse in atomizing cavity 5, and then can carry out the intensive mixing with atomizing gas, atomizing gas can become oil steam with oil drip atomizing to the realization is to the abundant atomizing of diesel oil. The diesel oil atomized by the atomized gas is changed from liquid oil into oil vapor and is further sprayed out from the spray opening 8 in a mist form, so that the diesel oil can be fully mixed with combustion-supporting air for ignition and combustion, and the diesel oil can be more fully combusted.

In order to make the diesel oil atomizing effect better, the atomizing cavity 5 is specially designed. The schematic structural diagram of the atomization cavity 5 is shown in fig. 2, and the atomization cavity comprises an oil inlet connecting section 9, an air inlet section 10, a circular tube main body section 12 and an atomization section 13 which are sequentially connected, wherein a cavity formed by connection is an atomization cavity, and diesel oil and atomization gas are mixed in the atomization cavity 5 to atomize the diesel oil. Wherein, the oil inlet 6 of the atomizing cavity 5 is positioned in the oil inlet connecting section 9, the air inlet 7 is positioned on the air inlet section 10, and the atomizing port 8 is positioned on the atomizing section 13; when diesel oil entered into the atomizing chamber from diesel oil pipeline 2 through oil inlet 6, atomizing gas jetted into the atomizing chamber through air inlet 7 in atomizing gas pipeline 3, and both mixed in the atomizing chamber, atomized diesel oil, and atomized diesel oil was from 8 blowout of atomising mouth, was mixed the burning with combustion-supporting wind. Meanwhile, the circular tube main body section 12 of the atomizing cavity 5 and the tube wall of the atomizing air duct 3 are integrally formed based on consideration of factors such as whether the actual processing of the device is convenient. Wherein, be provided with flange 11 outside oil feed linkage segment 9, and oil feed linkage segment 9 adopts welding or threaded connection's mode to be connected with diesel pipeline 2. When welding is adopted, the flange 11 arranged outside the oil inlet connecting section 9 is convenient to weld with the diesel oil pipeline 2; when the threaded connection is adopted, the inner wall of the diesel oil pipeline 2 is provided with an internal thread, the outer wall of the oil inlet connecting section 9 is provided with an external thread matched with the internal thread arranged on the inner wall of the diesel oil pipeline 2, and the two are in threaded connection; wherein, flange 11 not only can carry on spacingly to diesel pipeline 2, also is favorable to the screwing up of screw thread, prevents to become flexible.

The following are specifically mentioned: in order to enlarge the range of the atomizing gas sprayed into the atomizing cavity, the air inlet 7 and the air inlet section 10 are optimally designed, the air inlet section 10 of the atomizing cavity 5 is designed to be conical, because the air inlet 7 is positioned on the air inlet section 10 of the atomizing cavity 5, in consideration of the atomizing effect, the included angle between the central axis of the air inlet 7 and the axis of the atomizing gas pipeline 3 is designed to be 30-60 degrees, the preferred angle of the embodiment is 45 degrees, the range of the atomizing gas sprayed into the atomizing cavity 5 can be further enlarged by matching the angle with the conical air inlet section 10, diesel oil can be dispersed into fine liquid drops, and the fine liquid drops are fully mixed with the liquid drops, so that the atomizing effect of the diesel oil is better. Therefore, in order to spray the gas into the range maximize, the axis of the gas inlet 7 is perpendicular to the conical surface of the gas inlet section 10, so that the atomization effect of the diesel oil is better, and therefore the atomization effect of the diesel oil can be further enhanced by mutually matching the angles of the gas inlet 7 and the gas inlet section 10.

The angle of the spray opening 8 of the atomizing cavity 5 also needs to be specially designed, if the angle of the spray opening 8 is too large, fuel can be sprayed onto the wall of a flame tube, and carbon deposit and incomplete combustion are caused; the atomized diesel oil can not be effectively distributed to the whole combustion chamber space due to the excessively small angle, and the atomized diesel oil can be excessively sprayed to an anoxic backflow area to cause poor mixing with air, carbon deposition occurs, and further black smoke is emitted, so that the central axis of the spray opening 8 of the atomization cavity 5 and the axis of the atomized air pipeline 3 form an included angle of 30-60 degrees in the embodiment, the preferred angle in the embodiment is 45 degrees, the atomized diesel oil and the combustion-supporting air can be fully mixed due to the angle, and meanwhile, the sprayed atomized diesel oil can organize the flow field at the outlet of the shell 1 to achieve the purpose of strengthening combustion. Meanwhile, in order to optimize the range of the oil mist sprayed by the spray opening 8, the spray section 13 of the atomization cavity 5 is also optimized correspondingly, the spray section 13 is also designed to be conical, preferably, the central axis of the spray opening 8 is perpendicular to the spray section 13, and the spray range of the atomized diesel oil at the outlet of the shell 1 can be adjusted through the mutual matching action of the angle of the conical spray section 13 and the angle of the spray opening 8, so that the diameter of the combustion flame can be adjusted, and different forms of the combustion flame can be obtained.

Further, according to the principle that the smaller the diameter of the orifice, the smaller the pressure loss, in the present embodiment, the air inlet 7 and the spray outlet 8 are designed to be orifice-type, so that the pressure loss of the gas can be reduced. Simultaneously, in order to guarantee the volume of jet gas, the aperture diameter can not be designed too little, consequently, the diameter design of air inlet 7 is 5 ~ 10 millimeters, can guarantee to fully atomize liquid diesel oil, and the diameter design of atomising mouth 8 is 2.5 ~ 6 millimeters, guarantees that the atomized diesel oil that erupts can fully mix with combustion-supporting wind, reaches the purpose of abundant burning. 6-12 air inlets 7 and 6-12 spray nozzles 8 are formed in the atomizing cavity, and the amount of the atomized gas sprayed into the atomizing cavity 5 can be controlled by adjusting the diameter and the number of the air inlets 7, so that the atomizing effect of the diesel oil is controlled; the amount of sprayed atomized diesel can be controlled by adjusting the diameter and the number of the spray nozzles 8, and further the range and the diameter of combustion flame and the combustion degree of the atomized diesel can be controlled.

In order to better control combustion flame and improve combustion stability, swirl blades 14 are uniformly arranged in the combustion-supporting air channel 4 along the circumferential direction of the atomizing air pipeline 3 in the embodiment, the air direction of the combustion-supporting air can be changed by the swirl blades 14, 6-20 swirl blades are designed in quantity, and the swirl angle is set between 15-30 degrees. The swirl vanes 14 divide the combustion-supporting air channel 4 into a left channel and a right channel, the air direction of the combustion-supporting air flowing in the left channel is basically horizontal, and after passing through the swirl vanes 14, the air direction and the air speed of the combustion-supporting air can be controlled by adjusting the number of the swirl vanes 14 and the swirl angle of the swirl vanes 14, so that the combustion flame can be effectively controlled, and the combustion stability is improved. And the swirl vanes 14 are fixed between the combustion-supporting air pipeline and the circular tube main body section 12 of the atomizing cavity 5, and can also play a role of fixing and supporting the atomizing air pipeline 3. Meanwhile, in order to improve the use effect of the swirl vanes 14, the diameter of the pipe orifice at the tail end of the shell 1 is gradually reduced to form a conical closing-in part 15, so that the wind speed of combustion-supporting wind can be increased, the mixing strength of the combustion-supporting wind and atomized diesel oil can be enhanced, and the combustion reaction is more sufficient; the taper of the closing-in part 15 is 0-45 degrees, the preferred angle is 45 degrees in the embodiment, the closing-in part 15 and the swirl vanes 14 are matched for use, the wind direction and the wind speed of combustion-supporting wind can be adjusted, and the combustion flame form is controlled.

Because the burning of considering can release a large amount of heats, be in the high temperature combustion state for a long time and can make the nozzle produce high temperature deformation etc. reduce life, consequently for the life of improvement nozzle, need cool down the nozzle, for making the cooling effect better, fill into the cooling water in the cooling water passageway between the inside and outside wall of casing 1, utilize the cooling water heat absorption to cool down the nozzle, can prevent that the nozzle from damaging because of the high temperature, can the effectual life who improves the nozzle.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. The utility model provides a diesel burner nozzle, includes that the inner chamber is casing (1) of combustion-supporting wind passageway (4), be provided with diesel pipeline (2), its characterized in that in the inner chamber of casing (1): the atomizing device also comprises an atomizing air pipeline (3) and an atomizing cavity (5) which are arranged in the inner cavity of the shell (1); the atomized gas pipeline (3) is sleeved outside the diesel oil pipeline (2), and an atomized gas channel is formed between the atomized gas pipeline and the diesel oil pipeline; the inner cavity of the atomization cavity (5) is an atomization cavity, one end of the atomization cavity is provided with an air inlet (7) and an oil inlet (6), and the other end of the atomization cavity is provided with an atomizing nozzle (8) close to the outlet of the shell (1); the oil outlet end of the diesel pipeline (2) is connected with the oil inlet (6) of the atomization cavity (5); the air outlet end of the atomization air pipeline (3) is communicated with the atomization cavity of the atomization cavity (5) through the air inlet (7) of the atomization cavity (5).

2. The diesel burner of claim 1, characterized in that: the central axis of the air inlet (7) of the atomizing cavity (5) and the axis of the atomizing air pipeline (3) as well as the central axis of the atomizing nozzle (8) of the atomizing cavity (5) and the axis of the atomizing air pipeline (3) form included angles of 30-60 degrees.

3. The diesel burner of claim 2, characterized in that: the aperture of the air inlet (7) of the atomization cavity (5) is phi 5-10 mm; the aperture of the spray opening (8) of the atomization cavity (5) is phi 2.5-6 mm.

4. A diesel burner according to claim 2 or 3, characterized in that: the atomization cavity (5) is sequentially divided into an oil inlet connecting section (9), a conical air inlet section (10), a circular tube main body section (12) and a conical spraying section (13) from one end to the other end; an oil inlet (6) of the atomization cavity (5) is positioned in the oil inlet connecting section (9), an air inlet (7) is positioned on the conical air inlet section (10), and a spray nozzle (8) is positioned on the conical spray section (13).

5. The diesel burner of claim 4, characterized in that: the oil inlet connecting section (9) of the atomizing cavity (5) is inserted into the diesel pipeline (2) and is limited by a flange (11) arranged outside the oil inlet connecting section (9).

6. The diesel burner of claim 4, characterized in that: the circular tube main body section (12) of the atomization cavity (5) is formed by extending the tube wall of the atomization gas pipeline (3).

7. A diesel burner according to claim 1, 2 or 3, characterized in that: the shell (1) is divided into an inner wall and an outer wall, and a cooling water channel is formed between the inner wall and the outer wall.

8. A diesel burner according to claim 1, 2 or 3, characterized in that: a swirl vane (14) is arranged outside the atomizing air pipeline (3) in the inner cavity of the shell (1) close to the outlet, and divides the combustion-supporting air channel (4) into a left part and a right part; the swirl angle of the swirl vanes (14) is 15-30 degrees.

9. A diesel burner according to claim 1, 2 or 3, characterized in that: the diameter of a pipe orifice at the tail end of the shell (1) is gradually reduced to form a conical closing-in part (15), and the taper of the closing-in part (15) is 0-45 degrees.

10. The utility model provides a diesel burner, includes the nozzle, its characterized in that: the burner adopts the diesel burner as in any one of claims 1 to 9.