CN214581067U

CN214581067U - Glow burner

Info

Publication number: CN214581067U
Application number: CN202120776490.XU
Authority: CN
Inventors: 甄从军; 陆旭
Original assignee: Foshan Enou Combustion Control Technology Co ltd
Current assignee: Foshan Enou Combustion Control Technology Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-11-02
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a flame burner, which comprises a burner body and an igniter, wherein the burner body is provided with a main gas channel, a premixed gas channel and a main air channel; the main gas passageway is equipped with main gas spout along one side that the gas flows out, mixes the gas passageway in advance and arranges in the main gas passageway outside to its outside that is located main gas spout encircles and is equipped with mixes the gas spout in advance, mixes the gas spout in advance and is used for producing and carries out the pyrolysis flame of pyrolysis to main gas through main gas spout spun, and main air channel locates mixes the gas passageway outside in advance, and the combustion-supporting gas that will carry carries and main gas after the pyrolysis carries out the mixed combustion and forms burning flame. The utility model discloses a flame burner mixes the gas nozzle and produces in advance around the pyrolysis flame in main gas spout periphery, forms the inboard pyrolysis zone of heating that is high temperature and poor oxygen, makes main gas spout spun fuel produce high temperature carbon granule under the pyrolysis to produce high radiation ability and bright flame when mixing the burning with combustion-supporting gas, economic benefits is good.

Description

Glow burner

Technical Field

The utility model belongs to the technical field of the combustor, concretely relates to bright flame combustor.

Background

Industrial heating furnaces for high temperature heating and melting applications, such as furnaces, industrial heating or heat treatment kilns, ceramic kilns and the like, often have certain requirements on the brightness and length of flame of a burner due to process requirements, and water gas is commonly used as a combustion gas source of a nozzle in the past. With the use of natural gas, natural gas is being widely used as a gaseous fuel in view of its cleanliness, environmental friendliness, and price advantage. Whether natural gas or other gaseous fuels, when ambient air (especially preheated air) is used as the oxidant, the gaseous flame is generally blue in color, has very low luminosity and emissivity, reduces the efficiency of heat exchange between the flame and the furnace contents, and is economically inefficient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that there are lower luminosity and radiance in the blue flame of current combustor production, provide one kind and make gaseous fuel carry out the burning again after the pyrolysis produces the carbon particle in advance and produce the bright flame combustor that has luminance and high thermal radiation ability bright flame.

In order to achieve the above object, the utility model adopts the following technical scheme:

the flame burner comprises a burner body and an igniter, wherein the burner body is provided with a main gas channel, a premixed gas channel and a main air channel; the main gas channel is equipped with main gas spout along one side that the gas flows out, it arranges to mix gas channel in advance the main gas channel outside for carry the gas of mixing combustion-supporting gas, and its outside that is located main burning spout encircles and is equipped with mixes gas spout in advance, mix gas spout in advance and be used for producing and carry out the pyrolysis flame of pyrolysis to main gas through main gas spout spun, main air channel locates mix the gas channel outside in advance, mix combustion-supporting gas with the main gas after the pyrolysis and burn and form combustion flame.

Compared with the prior art, the utility model discloses a glowing burner, the gas spout that mixes produces in advance around the pyrolysis flame in main gas spout periphery, forms the inboard pyrolysis zone of heating that is high temperature and poor oxygen, makes main gas spout spun fuel produce high temperature carbon granule under the pyrolysis to can produce high radiation ability and bright glowing flame when mixing the burning with combustion-supporting gas, improve the thermal radiation performance and the heat exchange efficiency of combustor, economic benefits is good.

Furthermore, the premixed gas channel is arranged along the gas conveying direction of the main gas channel, a plurality of premixed gas channels are annularly arranged by taking the main gas channel as a center, and a plurality of premixed gas nozzles and a plurality of premixed gas channels are arranged in a one-to-one manner; by so doing; the premixed gas nozzles are annularly arranged at the periphery of the main gas nozzle, and the generated high-temperature pyrolysis flame wraps the main gas to isolate peripheral air, so that a high-temperature oxygen-poor environment is formed, and sufficient heat is provided for a main gas pyrolysis area.

Furthermore, the combustor body is provided with a plurality of flame stabilizing gas nozzles communicated with the main gas channel at intervals on the periphery of the main gas nozzle, and the combustor body is provided with a backflow structure which leads the gas sprayed out of the flame stabilizing gas nozzles to be mixed with part of combustion-supporting gas sprayed out of the main air channel and then to be guided to the premixed gas nozzles; through setting up like this, for premixing the gas spout and continuously providing the gas that thoughtlessly has combustion-supporting gas, guarantee to premix the gas spout and can continuously ignite, stabilize the flame that mixes gas spout and main gas spout in advance.

Furthermore, a plurality of premixed gas nozzles are arranged on the periphery of the main gas nozzle at intervals, and a plurality of flame stabilizing gas nozzles are arranged on the inner side of the premixed gas nozzles and are arranged in a staggered manner with the premixed gas nozzles along the radial direction; through setting up like this, the setting of steady flame gas spout is being close to main gas passageway one side, and compact structure is reasonable, and the steady flame gas spout spun gas of being convenient for simultaneously passes the clearance of adjacent premixing gas spout and mixes with the combustion-supporting gas in the outside.

Furthermore, a flow guide retaining wall is arranged on one side of the outer side of the burner body along the gas conveying direction, the flow guide retaining wall is arranged on the periphery of the burner body in a closed surrounding manner, and an inner angle formed between the flow guide retaining wall and the burner body is the backflow structure; through setting up like this, for the gas spout that mixes of premixing gas continuously provides the gas of thoughtlessly having combustion-supporting gas, guarantee that premixing gas spout can continuously ignite, stabilize the flame of premixing gas spout and main gas spout.

Furthermore, a flow distribution channel communicated with the premixed gas channel is arranged in the main gas channel; through setting up like this, guarantee the content of premixing gas passageway transported gas, guarantee that premixing gas spout can last the ignition, stabilize premixing gas spout and flame.

Further, the main gas nozzles are provided with a plurality of main gas nozzles and are arranged in an annular shape; through setting up like this, make main gas spout main gas of evenly spouting in the pyrolysis environment, the pyrolysis is effectual.

Furthermore, a plurality of flame stabilizing air nozzles are arranged on the burner body and positioned on the periphery of the premixed gas nozzles, and the flame stabilizing air nozzles are used for providing partial combustion-supporting gas; through the arrangement, enough oxygen combustion-supporting gas is provided for the combustor, and the effect of optimizing flame stability is achieved.

Further, the premixed gas channel comprises an inlet section, a mixing section and an expansion section along the gas conveying direction; the inner diameter of the inlet section is the same or gradually narrowed along the gas conveying direction, and the tail end of the inlet section is the same as the inner diameter of the connecting end of the mixing section; the inner diameters of the mixing sections are the same along the gas conveying direction, and the tail ends of the mixing sections are smaller than the inner diameter of the connection ends of the expanding sections; the inner diameter of the expanding section is the same or gradually widens along the gas conveying direction.

Drawings

FIG. 1 is a schematic view of a flame burner generating a flame

FIG. 2 is a front schematic view of a flame burner

FIG. 3 is an axial cross-sectional view of a flame burner

FIG. 4 shows an arrangement of premixed gas nozzles

FIG. 5 shows another arrangement of premixed gas jets

FIG. 6 shows another arrangement of premixed gas jets

Detailed Description

The technical scheme of the utility model is described below with the accompanying drawings:

referring to fig. 1 to 6, the utility model discloses a flame burner, including combustor body 1, some firearm and flame monitor are installed respectively in the accessory pilot hole 11 of combustor body 1, combustor body 1 includes gas conveying part 2 and the air conveying part 3 of ring locating the gas conveying part 2 outside, gas conveying part 2 is equipped with main gas passageway 21, main gas passageway 21 is used for carrying main gas 212, air conveying part 3 is equipped with premixing gas passageway 31 and main air passageway 32; the main gas passageway 21 is equipped with main gas spout 211 along one side that gas flows out, it arranges to mix gas passageway 31 main gas passageway 21 outside for carry the gas of mixing combustion-supporting gas, and its outside that is located main burner spout encircles and is equipped with mixes gas spout 311, mix gas spout 311 in advance and be used for producing and carry out the pyrolysis flame 310 of pyrolysis to main gas 212 through main gas spout 211 spun, main air passageway 32 is located mix gas passageway 31 outside, be equipped with main air spout 321 for mix combustion formation burning flame with the main gas 212 after the pyrolysis with the combustion-supporting gas 330 of carrying.

The utility model discloses a flame burner, utilize gas fuel flame to produce the principle that little carbon particle and little carbon particle play leading role in high heat radiation intensity performance under high temperature condition and poor oxygen environment at flame 210, through set up in main gas spout 211 periphery and mix gas spout 311 in advance, it produces the high temperature pyrolysis flame 310 of parcel main gas spout 211 to mix gas spout 311 in advance, isolated main gas spout 211 peripheral air, form the poor oxygen environment of high temperature, provide sufficient heat for main gas 212 pyrolysis, the pyrolysis that makes main gas spout 211 spun main gas 212 fuel obtains strengthening, the little carbon particle temperature of production risees, produce higher radiant heat flux in the flame of burning, make flame have higher temperature and blackness, improve the radiant energy and the luminance brightness of flame burner's flame.

Compared with the prior art, the mixed gas nozzle of the flame burner generates the pyrolysis flame 310 around the periphery of the main gas nozzle 211 in advance to form the pyrolysis heating area 12 with high temperature and oxygen deficiency on the inner side, so that the main gas 212 sprayed from the main gas nozzle 211 generates high-temperature carbon particles under the pyrolysis action, and the high-temperature carbon particles can generate a high-radiation-capacity and bright flame 210 when being mixed and combusted with combustion-supporting gas, thereby improving the heat radiation performance and the heat exchange efficiency of the burner and having good economic benefit.

Referring to fig. 1 to 3, in an embodiment, the premixed gas channel 31 is arranged along a gas conveying direction of the main gas channel 21, the premixed gas channel 31 is annularly provided in a plurality with the main gas channel 21 as a center, and the premixed gas nozzles 311 are provided in a plurality one-to-one correspondence with the premixed gas channel 31; by so doing; the premixed gas nozzles 311 are annularly arranged on the periphery of the main gas nozzle 211, and the generated high-temperature pyrolysis flame 310 wraps the main gas 212 to isolate the peripheral air, so that a high-temperature oxygen-poor environment is formed, and sufficient heat is provided for the pyrolysis area of the main gas 212.

Referring to fig. 1 and 3, in one embodiment, the gas delivery part 2 is provided with a plurality of flame holding gas nozzles 22 at intervals around the main gas nozzle 211 and communicated with the main gas channel 21, the flame-holding gas jets 22 are arranged obliquely to the main air channel 32, preferably at an angle a of 10 to 60 degrees radially to the axis of the burner body 1, the flame-stabilizing gas nozzle 22 delivers gas accounting for 5-40% of the total gas, the burner body 1 is provided with a backflow structure 41 which leads the gas sprayed from the flame-stabilizing gas nozzle 22 to be mixed with part of the combustion-supporting gas sprayed from the main air channel 32 and then to be guided to the premixed gas nozzle 311, a flow guide baffle wall 4 is arranged on one side of the outer side of the burner body 1 along the gas conveying direction, the flow guide baffle wall 4 is arranged on the periphery of the burner body 1 in a closed surrounding manner, the inner angle formed between the flow guide baffle wall 4 and the burner body 1 is the backflow structure 41; through setting up like this, the partial gas 330 that main gas passageway 21 carried is spout through steady flame gas spout 22, mix the back with the partial combustion-supporting gas of main air passageway 32 spun, backflow structure 41 through combustor body 1 flows to premixing gas spout 311 and burns, for premixing gas spout 311 continuously provides the gas of mixing with combustion-supporting gas, guarantee that premixing gas spout 311 can continuously ignite, stabilize the flame of premixing gas spout 311 and main gas spout 211, and the water conservancy diversion keeps off wall 4 and plays the guide effect to spun main gas 212 and combustion-supporting gas, improve the range of combustor flame.

Referring to fig. 1 to 3, in an embodiment, an outer end of the gas delivery part 2 extends out of the air delivery part 3, a connection portion between the gas delivery part 2 and the air delivery part 3 is designed to be a slope portion 23, and the flame holding gas nozzles 22 are arranged on the slope portion 23 to realize that the flame holding gas nozzles 22 are obliquely arranged towards one side of the main air channel 32. The premixed gas nozzle 311 is positioned at the periphery of the main gas nozzle 211 and is provided with a plurality of flame-stabilizing gas nozzles 22 at intervals, and the plurality of flame-stabilizing gas nozzles 22 are arranged at the inner side of the premixed gas nozzle 311 and are arranged in a staggered manner with the premixed gas nozzle 311 along the radial direction; through setting up like this, the setting of steady flame gas spout 22 is in being close to main gas passageway 21 one side, and compact structure is reasonable, and the gas of being convenient for steady flame gas spout 22 spun simultaneously passes the clearance of adjacent gas spout 311 in advance and mixes with the combustion-supporting gas in the outside.

Referring to fig. 1, in an embodiment, the main gas channel 21 is provided with a branch channel 24 communicating with the premixed gas channel 31, and a part of the gas 330 delivered by the main gas channel 21 flows to the premixed gas channel 31 through the branch channel 24; through the arrangement, the content of the fuel gas conveyed by the premixed fuel gas channel 31 is ensured, the premixed fuel gas nozzle 311 can be continuously ignited, and the flame of the premixed fuel gas nozzle 311 is stabilized.

Referring to fig. 1 and 2, in an embodiment, the main gas nozzles 211 are provided in plurality and are arranged in an annular shape, a radial included angle between the annular main gas nozzles 211 and an axis of the burner body 1 is 0 to 45 °, which facilitates the annular main gas nozzles 211 to achieve parallel jet airflow or outward expanding jet airflow, and the main gas 212 conveyed by the main gas channel 21 accounts for 40 to 80% of the total gas amount; through setting up like this, make main gas 212 that main gas spout 211 evenly spouts in the pyrolysis environment, the pyrolysis is effectual.

Referring to fig. 1 and 3, in an embodiment, the premixed gas channel 31 delivers gas accounting for 8 to 30% of the total gas, and the premixed gas nozzle 311 may be disposed at an angle B of 0 to 15 ° radially to the axis of the burner body 1 and at an angle of 0 to 25 ° circumferentially to the axis of the burner body 1.

Referring to fig. 2, in an embodiment, the main air channel 32 is arranged along the gas conveying direction of the main gas channel 21, the main air channel 32 is annularly provided with a plurality of main air nozzles 321 and the main air channel 32 in a one-to-one manner, the combustion supporting gas 330 conveyed by the main air channel 32 accounts for 50 to 92% of the total combustion supporting gas, the radial included angle C between the main air nozzles 321 and the axis of the burner body 1 is 0 to 30 °, and the circumferential included angle with the axis of the burner body 1 is 0 to 45 °.

Referring to fig. 1 and 3, in an embodiment, the air delivery part 3 is provided with a plurality of flame holding air jets 33 at the periphery of the premixed gas jet 311, the flame holding air jets 33 are used for providing part of combustion-supporting gas, the combustion-supporting gas delivered by the flame holding air jets 33 accounts for 0 to 20% of the total combustion-supporting gas, the flame holding air jets 33 are radially included at an angle of 0 to ± 30 ° with respect to the axis of the burner body 1, and are circumferentially included at an angle of 0 to 30 ° with respect to the axis of the burner body 1; through the arrangement, enough oxygen combustion-supporting gas is provided for the combustor, and the effect of optimizing flame stability is achieved.

Referring to fig. 1 to 6, in an embodiment, the premixed gas channel 31 may be arranged in a certain solid angle to make the combined cylindrical flame present a convergent, divergent or rotary lamp shape, and the sectional structure of the premixed gas channel 31 is generally circular, and may also be oval, semicircular or rectangular. The premix gas channel 31 comprises an inlet section 312, a mixing section 313 and an expansion section 314 in the gas conveying direction; the inner diameter of the inlet section 312 is the same or gradually narrows along the gas conveying direction, and the end thereof is the same as the inner diameter of the connecting end of the mixing section 313; the inner diameter of the mixing section 313 is the same along the gas conveying direction, and the tail end of the mixing section is smaller than the inner diameter of the end connected with the expansion section 314; the inner diameter of the expanding section 314 is the same or gradually widens in the gas conveying direction.

Referring to fig. 1, the process of generating the flame by the flame burner of the present invention can be realized by the following steps:

a. the premixed gas passage 31 of the burner body 1 delivers gas mixed with combustion-supporting gas, and is jetted through the premixed gas jetting ports 311 and generates pyrolysis flames 310 around the outer circumference of the main gas jetting ports 211.

b. The gas supplied from the main gas passage 21 of the burner body 1 is jetted through the main gas jetting port 211, and carbon particles are generated by pyrolysis of the pyrolysis flame 310.

c. The combustion-supporting gas 330 delivered by the main air channel 32 of the burner body 1 is ejected through the main combustion air nozzle, and is mixed with the pyrolyzed main fuel gas 212 and burned to form a combustion flame.

The combustion supporting gas 330 may be oxygen in air or other combustion supporting gas.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The flame burner is characterized by comprising a burner body and an igniter, wherein the burner body is provided with a main gas channel, a premixed gas channel and a main air channel; the main gas channel is equipped with main gas spout along one side that the gas flows out, it arranges to mix gas channel in advance the main gas channel outside for carry the gas of mixing combustion-supporting gas, and its outside that is located main burning spout encircles and is equipped with mixes gas spout in advance, mix gas spout in advance and be used for producing and carry out the pyrolysis flame of pyrolysis to main gas through main gas spout spun, main air channel locates mix the gas channel outside in advance, mix combustion-supporting gas with the main gas after the pyrolysis and burn and form combustion flame.

2. A glow burner as claimed in claim 1, wherein said premixed gas channel is arranged along a gas transport direction of said main gas channel, said premixed gas channel is provided in plurality circumferentially with said main gas channel as a center, and said premixed gas port is provided in plurality one-to-one with said premixed gas channel.

3. The flame burner of claim 1, wherein the burner body is provided with a plurality of flame stabilizing gas nozzles at intervals around the main gas nozzle and communicated with the main gas channel, and the burner body is provided with a backflow structure for mixing the gas sprayed from the flame stabilizing gas nozzles with part of the combustion-supporting gas sprayed from the main air channel and then leading the mixture to the premixed gas nozzles.

4. A glow burner as claimed in claim 3, wherein said premixed gas jets are spaced apart from each other around said main gas jet, and a plurality of flame-stabilizing gas jets are provided inside said premixed gas jets and radially offset from said premixed gas jets.

5. A glow burner as claimed in claim 3 or 4, wherein a flow guiding wall is provided on one side of the outer side of said burner body along the gas conveying direction, said flow guiding wall is disposed around the outer circumference of said burner body in a closed manner, and the inner angle formed between said flow guiding wall and said burner body is said backflow structure.

6. A glow burner as claimed in any one of claims 1 to 4, wherein a bypass channel is provided in said main gas channel in communication with said premixed gas channel.

7. A burner according to claim 1, wherein said main gas port is provided in plurality and in annular arrangement.

8. A flame burner as recited in claim 1, wherein the burner body is provided with a plurality of flame holding air jets located around the periphery of the premixed gas jets, the flame holding air jets for providing a portion of the combustion supporting gas.

9. A flame burner according to claim 1, wherein the premix gas channel comprises an inlet section, a mixing section and an expansion section in a gas transport direction;

the inner diameter of the inlet section is the same or gradually narrowed along the gas conveying direction, and the tail end of the inlet section is the same as the inner diameter of the connecting end of the mixing section;

the inner diameters of the mixing sections are the same along the gas conveying direction, and the tail ends of the mixing sections are smaller than the inner diameter of the connection ends of the expanding sections;

the inner diameter of the expanding section is the same or gradually widens along the gas conveying direction.

10. A glow burner as claimed in any one of claims 1 to 4 and 7 to 9, wherein a baffle wall is provided on one side of the outer side of said burner body in the gas delivery direction, and said baffle wall is disposed around the outer periphery of said burner body in a closed shape.