CN211345309U

CN211345309U - Burner mechanism and combustor comprising same

Info

Publication number: CN211345309U
Application number: CN201921469051.3U
Authority: CN
Inventors: 刘昌亮
Original assignee: Zhuhai Berkeley Energy Technology Co ltd
Current assignee: Zhuhai Berkeley Energy Technology Co ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-08-25
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a burner mechanism and a burner comprising the burner mechanism, wherein, an inner tube is provided with a flame channel, the output end of the flame channel is provided with a cone, and the cone tip of the cone faces to the input end of the flame channel; the outer shell surrounds the inner tube, an air duct is formed between the inner wall of the outer shell and the outer wall of the inner tube, the air duct is communicated with an air inlet and an air outlet, and the air outlet surrounds the output end of the flame channel. Through improving the nozzle structure, the high temperature flame and/or gas etc. that the flame passageway was discharged and the quick intensive mixing of overgrate air, the thorough burning of the combustible component that the primary flame was not burnt out in the combustor is with higher speed, eliminates the harmful substance carbon monoxide in the flue gas, reduces energy loss, avoids environmental pollution, guarantees that biomass fuel is more energy-conserving, environmental protection in the application of industrial and agricultural production life, benefits the society.

Description

Burner mechanism and combustor comprising same

Technical Field

The utility model belongs to the technical field of combustion apparatus and specifically relates to a nozzle mechanism is related to.

Background

As a renewable new energy source, biomass is increasingly paid more attention to the energy field.

At present, according to the latest relevant legislation requirements of the boiler atmospheric pollutant emission standard, in addition to greatly reducing the atmospheric pollutant emission limit of the original standard, the atmospheric pollutant emission limit of the biomass briquette fuel boiler is specified to be equal to or better than that of the gas boiler, wherein the local standard reduces the NOx emission limit to 150mg/m3, and simultaneously increases the strict requirement of the carbon monoxide emission limit of 200 mg/m 3.

However, in a common biomass burner or a combustible raw gas burner produced by biomass gasification, a burner structure of a burner smoke outlet is usually only concentrically arranged by a flame channel and a secondary air channel shell, and a plurality of rotating blades are simply added at the outlet end of the secondary air channel to force secondary air to flow out in a rotating manner. Because the process requirement is not strict enough and the structure is too simple, the combustion of related fuels is difficult to ensure to be complete, the flue gas contains a large amount of carbon monoxide, the energy is not saved, the standard emission of atmospheric pollutants in the flue gas generated by combustion cannot be ensured, and the serious environmental pollution is very easy to cause.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an at least solve one of the technical problem who exists among the prior art, solve combustible component in the discharge flame of combustion apparatus not by the problem of abundant burning, production pollution waste gas, the technical scheme of the utility model is:

according to the utility model discloses an aspect provides a nozzle mechanism, include

The flame tube comprises an inner tube, a flame channel and a flame tube, wherein the inner tube is provided with the flame channel, the output end of the flame channel is provided with a cone, and the cone tip of the cone faces the input end of the flame channel;

the outer shell body surrounds the inner tube, the outer shell body inner wall with form the wind channel between the inner tube outer wall, the wind channel intercommunication has air intake and air outlet, the air outlet encircles the output of flame passageway.

Has the advantages that: through improvement nozzle structure, the air outlet encircles the output of flame path, the high temperature cigarette stream of flame path exhaust is through the cone and to peripheral diffusion, flame path exhaust high temperature flame and/or gaseous etc. and overgrate air (the primary air of relative combustion apparatus) intensive mixing fast, the thorough burning of the combustible component that the primary flame was not burnt in combustion apparatus such as accelerating burner, eliminate harmful substance carbon monoxide in the flue gas, reduce energy loss, avoid environmental pollution, guarantee that biomass fuel is more energy-conserving, the environmental protection in the application of industrial and agricultural production life, benefit the society.

Preferably, the air inlet is arranged at a position on the outer shell corresponding to the input end of the flame passage; the position of the inner pipe corresponding to the flame channel input end is provided with a ventilation hole, and the air inlet is communicated with the input end of the flame channel through the ventilation hole.

Preferably, the ventilation holes are distributed along the circumferential direction of the inner pipe.

Preferably, the outer casing comprises a volute portion and a sleeve portion, the volute portion corresponds to an input end of the flame passage, and the sleeve portion corresponds to an output end of the flame passage; the air inlet is used for introducing air along the spiral direction of the volute part.

Preferably, the cone keep away from the one end of awl point and be connected with two piece at least first blades, two piece at least first blades distribute around the axial circumference of cone, the cone passes through first blade and connects inner tube inner wall, the water conservancy diversion direction of first blade is around the axial helical direction of cone.

Preferably, one end of the outer wall of the inner pipe, which is close to the flame passage, is provided with at least two second blades, the at least two second blades are distributed around the axial circumference of the inner pipe, and the inner pipe is connected with the inner wall of the outer shell through the second blades; the flow guide directions of the first blade and the second blade are the same spiral direction.

Preferably, a flow guide blocking part is arranged at a position, close to the air outlet, of the outer shell and used for guiding air in an axial direction towards the flame channel.

According to the utility model discloses a second aspect provides a combustor, include nozzle mechanism, still include the combustor main part, the combustor main part is provided with the burning chamber, flame path intercommunication burning chamber.

Has the advantages that: by improving the structure of the burner, the air outlet surrounds the output end of the flame channel, high-temperature flame and/or combustible substances discharged by the flame channel flow through the cone and are diffused to the periphery, and the high-temperature flame and/or substance flow discharged by the flame channel and the like are quickly and fully mixed with secondary air (primary air relative to combustion equipment); after the fuels such as biomass and the like are combusted in the combustion cavity, residual combustible substances of smoke and fire guided out by the flame channel are fully and thoroughly combusted, harmful substances are eliminated, energy loss is reduced, environmental pollution is avoided, and the application of the biomass fuels in industrial and agricultural production and life is more energy-saving and environment-friendly, so that the biomass fuel combustion chamber is beneficial to the society.

Preferably, the burner mechanism comprises a connecting plate, and the connecting plate can be connected with a burner.

Drawings

FIG. 1 is a sectional view of a burner mechanism according to an embodiment of the present invention;

FIG. 2 is a sectional view of the burner mechanism according to the embodiment of the present invention from a left perspective;

fig. 3 is a sectional view of a main view angle of a burner according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 3, a burner mechanism includes an inner tube 1 (also called as a fire tube) and an outer shell 2, the inner tube 1 is provided with a flame path 11, an output end 11b of the flame path 11 is provided with a cone 3, and a cone tip of the cone 3 faces an input end 11a of the flame path 11; the outer shell 2 surrounds the inner tube 1, an air duct 23 is formed between the inner wall of the outer shell 2 and the outer wall of the inner tube 1, the air duct 23 is communicated with an air inlet 23a and an air outlet 23b, and the air outlet 23b surrounds the output end 11b of the flame passage 11.

The direction of the incoming flue gas and/or fire of the flame path is V as shown in FIGS. 1 and 3₁₁The direction is that the smoke and/or fire output from the combustion equipment is input into the flame channel; the direction of the output flue gas and/or fire of the flame path is V as shown in FIGS. 1 and 3₁₂Direction; the air inlet direction of the air duct is V shown in figures 1 and 3₂₁The direction of air inlet of the air duct is V shown in figures 1 and 3₂₂And (4) direction.

Through improving the burner structure, the air outlet 23b encircles the output end 11b of flame passageway 11, the high temperature flame and/or the combustible substance that flame passageway 11 discharged flows through cone 3 and outwards spreads, the high temperature flame and/or the material flow etc. that flame passageway 11 discharged fully mixes fast with overgrate air (the primary air of relative combustion apparatus), the thorough burning of the combustible component that primary flame was not burnt in combustion apparatus such as acceleration combustor, eliminate the harmful substance carbon monoxide in the flue gas, reduce energy loss, avoid environmental pollution, guarantee that biomass fuel is more energy-conserving, environmental protection, the benefit society in the application of industry and agriculture production life.

Preferably, a flow guide blocking part 24 is arranged at a position, close to the air outlet, of the outer shell 2, and the flow guide blocking part 24 is used for guiding air towards the axial direction of the flame passage

The air inlet 23a is arranged at the position corresponding to the input end 11a of the flame passage 11 on the outer shell 2; the inner tube 1 is provided with a vent hole 1a at a position corresponding to the input end 11a of the flame path 11, and the air inlet 23a is communicated with the input end 11a of the flame path 11 through the vent hole 1 a.

A plurality of vent holes 1a are distributed along the circumference of the inner tube 1. A plurality of ventilation holes 1a which are uniformly distributed on the circumference are additionally arranged at the front part of the inner pipe 1, and a proper amount of fresh air is supplemented into the input primary flame, so that the unburned combustible components in the primary flame are further combusted, and the phenomenon that the excessively violent combustion of the flame generates an overhigh flame temperature to aggravate the damage of the inner pipe 1 and shorten the service life of a burner nozzle is avoided, thereby reducing the generation of harmful substances, namely nitrogen oxide, and being beneficial to the environmental-friendly standard emission of flue gas.

Preferably, a plurality of vent holes 1a are distributed along the circumferential direction of the inner pipe 1; the outer casing 2 comprises a volute part 21 and a sleeve part 22, wherein the volute part 21 corresponds to the input end 11a of the flame channel 11, and the sleeve part 22 corresponds to the output end 11b of the flame channel 11; the air inlet 23a is used for introducing air along the spiral direction of the volute portion 21.

Preferably, the casing 2 is also provided with the volute portion 21 and the sleeve portion 22, and the first blade 4 and the second blade 5 are also provided. The secondary air ring is cut into the air duct 23 and rotates around the outer wall of the inner pipe 1 to move forwards, the rotating direction is consistent with the rotating direction of the blades, and the rotating disturbance effect at the secondary air outlet is enhanced.

The one end of cone 3 of keeping away from the awl point is connected with two piece at least first blades 4, and two piece at least first blades 4 distribute around the axial circumference of

cone

3, and 1 inner wall of inner tube is connected through first blade 4 to cone 3, and the water conservancy diversion direction of first blade 4 is around the axial helical direction of cone 3. The high-temperature smoke flow of the primary flame is diffused to the periphery and rotationally disturbed, so that the high-temperature smoke flow is quickly and fully mixed with the secondary air.

Preferably, one end of the outer wall of the inner tube 1, which is close to the flame passage 11, is provided with at least two second blades 5, the at least two second blades 5 are distributed around the axial circumference of the inner tube 1, and the inner tube 1 is connected with the inner wall of the outer shell 2 through the second blades 5; the flow guiding directions of the first blade 4 and the second blade 5 are the same spiral direction. The high-temperature smoke flow and the secondary air are quickly and fully mixed in the same-direction vortex suction stirring.

The burner comprises a burner mechanism and a burner body 6, wherein the burner body 6 is provided with a combustion cavity 6a, and a flame channel 11 is communicated with the combustion cavity 6 a.

The burner mechanism comprises a connecting plate 7, and the connecting plate 7 is used for connecting combustion equipment such as a combustor. As shown in fig. 1 and 3, the connecting plate 7 connects the left ends of the inner and outer casings, and the left end of the air duct is closed.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. A burner mechanism is characterized in that: comprises that

The flame tube comprises an inner tube (1), wherein the inner tube (1) is provided with a flame channel (11), the output end (11b) of the flame channel (11) is provided with a cone (3), and the cone tip of the cone (3) faces to the input end (11a) of the flame channel (11);

the outer shell (2), outer shell (2) are around inner tube (1), outer shell (2) inner wall with form wind channel (23) between inner tube (1) outer wall, wind channel (23) intercommunication has air intake (23a) and air outlet (23b), output (11b) that flame passageway (11) were encircleed in air outlet (23 b).

2. A burner mechanism according to claim 1, wherein: the air inlet (23a) is arranged at the position, corresponding to the input end (11a) of the flame channel (11), on the outer shell (2); the position that corresponds flame passageway (11) input (11a) of inner tube (1) is provided with ventilation hole (1a), air intake (23a) are through ventilation hole (1a) input (11a) of intercommunication flame passageway (11).

3. A burner mechanism according to claim 2, wherein: the ventilation holes (1a) are distributed along the circumferential direction of the inner pipe (1).

4. A burner mechanism according to claim 3, wherein: the outer shell (2) comprises a volute part (21) and a sleeve part (22), the volute part (21) corresponds to the input end (11a) of the flame channel (11), and the sleeve part (22) corresponds to the output end (11b) of the flame channel (11); the air inlet (23a) is used for introducing air along the spiral direction of the volute part (21).

5. A burner mechanism according to any one of claims 1 to 4, wherein: the one end of keeping away from the awl point of cone (3) is connected with two piece at least first blade (4), two piece at least first blade (4) distribute around the axial circumference of cone (3), inner tube (1) inner wall is connected through first blade (4) in cone (3), the water conservancy diversion direction of first blade (4) is around cone (3) axial helical direction.

6. The burner mechanism of claim 5, wherein: at least two second blades (5) are arranged at one end, close to the flame passage (11), of the outer wall of the inner pipe (1), the at least two second blades (5) are distributed around the axial circumference of the inner pipe (1), and the inner pipe (1) is connected with the inner wall of the outer shell (2) through the second blades (5); the flow guide directions of the first blade (4) and the second blade (5) are the same spiral direction.

7. A burner mechanism according to any one of claims 1 to 4, wherein: the position that is close to the air outlet of shell body (2) is provided with water conservancy diversion fender portion (24), water conservancy diversion fender portion (24) are used for towards the axial wind-guiding of flame passageway.

8. A burner, characterized by: the burner mechanism of any one of claims 1 to 7, further comprising a burner body (6), wherein the burner body (6) is provided with a combustion chamber (6a), and the flame channel (11) is communicated with the combustion chamber (6 a).

9. A burner as claimed in claim 8, wherein: the burner mechanism comprises a connecting plate (7), and the connecting plate (7) can be connected with a burner.