CN102927569B - Horizontal flow burner - Google Patents

Horizontal flow burner Download PDF

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Publication number
CN102927569B
CN102927569B CN201210443187.3A CN201210443187A CN102927569B CN 102927569 B CN102927569 B CN 102927569B CN 201210443187 A CN201210443187 A CN 201210443187A CN 102927569 B CN102927569 B CN 102927569B
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China
Prior art keywords
air
cylindrical shell
horizontal flow
flow burner
burner
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CN201210443187.3A
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CN102927569A (en
Inventor
刘泰生
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Dongfang Boiler Group Co Ltd
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Dongfang Boiler Group Co Ltd
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Abstract

The invention discloses a horizontal flow burner and belongs to the field of boiler burners. The horizontal flow burner comprises an oil nozzle at an end of an oil gun barrel, a primary air duct member, a stable combustion cover, a secondary air duct member, an air adjusting block and an adjusting mechanism, the air adjusting block is arranged on the oil gun barrel and is capable of moving forwards and backwards on the oil gun barrel along the length direction, the adjusting mechanism is connected with the air adjusting block to control moving of the air adjusting block, and the air adjusting block is in a streamline shape along the moving direction of the air adjusting block. The horizontal flow burner is high in adaptive capacity of changes of loads, fuels, fuel temperatures and fuel atomization conditions.

Description

A kind of horizontal flow burner
Technical field
The invention belongs to boiler-burner field, particularly relate to the low-NOx combustor of the fuel such as a kind of combusting heavy oil, residual oil that station boiler and Industrial Boiler are applied.
Background technology
Horizontal flow burner is the low-NOx combustor of the fuel such as a kind of combusting heavy oil, residual oil of extensive use on current plant boiler and Industrial Boiler.Horizontal flow burner is primarily of oil burner nozzle, First air passage, steady combustion cover and secondary air channel composition.Steady combustion cover is positioned at First air channel exit, and air-flow forms stable, that size is a suitable recirculating zone after flowing through steady combustion cover, entrainments the high temperature gases recirculating heated fuel oil after oil firing, guarantee fuel oil in time, stable ignition.First air outside steady combustion cover is direct current, spurts in stove, mix with the fuel oil after burning with high speed.Secondary Air enters burner hearth in the mode of direct current or eddy flow, continues to supplement fuel oil and to burn completely required air.In addition, part horizontal flow burner is equiped with shading ring on steady combustion cover, or is equiped with flame separate pitch cutting in the outlet of First air direct current wind and Secondary Air exit, delays the supply of air.Horizontal flow burner is by said process, and the air supply in control combustion each stage, makes combustion process carry out under reducing atmosphere on the one hand, reduces the highest flame temperature on the other hand, restrained effectively the generation of nitrogen oxide.
But, in the application of horizontal flow burner, also have following deficiency:
1, the root wind and the direct current wind allocation of the amount of air that flow through steady combustion cover in First air are selected when designing, unadjustable in operation, poor to load variations, fuel change, fuel temperature change, fuel atomization situation change adaptive capacity;
2, the allocation of the amount of air of First air and Secondary Air is unadjustable, to load variations, fuel change, fuel temperature change, fuel atomization situation change adaptive capacity poor;
3, the swirl strength of Secondary Air is unadjustable, to load variations, fuel change, fuel temperature change, fuel atomization situation change adaptive capacity poor;
4, air-flow can produce coming off of obvious vortex and whirlpool after flowing through shading ring, flame separate pitch cutting, affects the stability of flame front, increases the possibility of burner hearth vibration.
Summary of the invention
The object of the invention is to: a kind of horizontal flow burner is provided, to load variations, fuel change, fuel temperature change, fuel atomization situation change adaptive capacity stronger.
The object of the invention is realized by following technical proposals:
A kind of horizontal flow burner, comprise the oil burner nozzle of oil gun pipe end, First air cylindrical shell, steady combustion cover and Secondary Air cylindrical shell, also comprise and be located on described oil gun pipe, air conditioning block that can be movable along its length thereon, and with described its governor motion moved of air conditioning block connection control, described air conditioning block is streamlined along its moving direction.
In such scheme, regulated the particular location of air conditioning block by governor motion, the air mass flow entering steady combustion cover is changed, and then reaches the object regulating root wind and direct current wind air quantity.Before air conditioning block is pushed to, reduce the air capacity entering steady combustion cover; Air conditioning block pulls back, and increases the air capacity entering steady combustion cover.Flow through in its First air the root wind of steady combustion cover and direct current wind allocation of the amount of air run in adjustable, and regulating measure is simple, reliable, stronger to load variations, fuel change, fuel temperature change, fuel atomization situation change adaptive capacity.
As preferred embodiment, described air conditioning block is a spindle.
In such scheme, before and after spindle, be fairing, air can be played best and distribute regulating action, and before postpone and draw Shi Junneng well to overcome windage, regulate smooth and easy.
As preferred embodiment, described First air cylindrical shell is circumferentially provided with First air air inlet, described First air air inlet is provided with the air door that can move forward and backward, and described air door is connected with the guide rod regulating its position.
In such scheme, by the position of guide rod damper, change the incoming air area of air inlet, and then reach the object regulating First air air quantity.
As preferred embodiment, the Secondary Air air inlet of described Secondary Air cylindrical shell is provided with controllability tangential vane.
In such scheme, controllability tangential vane, the intake of adjustable second wind and swirl strength in operation.
As preferred embodiment, the First air air inlet downstream of described First air cylindrical shell is provided with uniform flow orifice.
In such scheme, make First air after flowing through this uniform flow orifice on section everywhere air-flow velocity keep evenly.
As preferred embodiment, described steady combustion cover is provided with guide ring, and its section is wedge type or streamlined.
In such scheme, guide ring, its section is rendered as wedge type or streamlined, and direct current First air can delay on the one hand and the mixing of fuel oil flame after flowing through this guide ring, also eliminates obvious vortex on the other hand, decreases the possibility causing burner hearth vibration.
As preferred embodiment, the First air exit of described First air cylindrical shell and the Secondary Air exit of described Secondary Air cylindrical shell are respectively equipped with gas flame cuttiug block, and its section is wedge type or streamlined.
In such scheme, gas flame cuttiug block, its section is rendered as wedge type or streamlined, and on the one hand this gas flame cuttiug guide block can delay mixing of air and fuel oil flame, also eliminates obvious recirculating zone on the other hand, decreases the possibility that burner hearth vibrates.
As preferred embodiment, the First air exit of described First air cylindrical shell and the Secondary Air exit of described Secondary Air cylindrical shell are respectively equipped with enlarging.
In such scheme, enlarging guides air-flow, timely and reasonably aftercombustion air, keeps degree of filling in good flame profile and air-flow stove.
Beneficial effect of the present invention: by arranging the spindle that can move forward and backward in First air passage, and adjustable type main air intake, Secondary Air adjustable swirl blade are set, realize root wind air quantity, direct current First air air quantity, Secondary Air air quantity and secondary wind swirl intensity adjustable, and regulating measure is simple, reliable; Adopt wedge type or streamlined guide ring or gas flame cuttiug block, eliminate the vortex in the past after these parts, realizing classification or delaying the inducement that while air mix with flame, minimizing burner hearth vibrates, simultaneously, keep good flame profile, degree of filling in the stove obtained.Pass through the present invention, burner strengthens the adaptability of the various changes such as load variations, fuel performance change, oil temperature change, atomizing effect change, better combustion efficiency and environmental-protecting performance can be all obtained under various change, reduce and eliminate the inducement causing burner hearth vibration, there is better security, economy and environmental-protecting performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Wherein 1-oil burner nozzle; 2-surely fires cover; 3-guide ring; 4-direct current First air gas flame cuttiug block; 5-Secondary Air gas flame cuttiug block; The enlarging of 6-First air; The enlarging of 7-Secondary Air; 8-Secondary Air cylindrical shell; 9-First air cylindrical shell; 10-spindle; 11-controllability tangential vane; 12-First air air inlet; 13-air door; 14-air door guide rod; 15-spindle guide rod; 16-uniform flow orifice; 17-oil gun pipe.
Detailed description of the invention
Following non-limiting examples is for illustration of the present invention.
As shown in Figure 1, a kind of horizontal flow burner, comprise the oil burner nozzle 1 of oil gun pipe 17 termination, First air cylindrical shell 9, steady combustion cover 2 and Secondary Air cylindrical shell 8, also comprise and be located on oil gun pipe 17, air conditioning block that can be movable along its length thereon, and with its governor motion moved of air conditioning block connection control, air conditioning block is streamlined along its moving direction.As preferably, as shown in this embodiment, air conditioning block is a spindle 10; Governor motion can be various structure, as long as its front and back that can realize air conditioning block regulate, those skilled in the art are known has numerous structure to realize, and the guide rod of spindle shown in the present embodiment 15 is only preferred exemplary.
First air cylindrical shell 9 is circumferentially provided with First air air inlet 12, and First air air inlet 12 is provided with the air door 13 that can move forward and backward, and air door 13 is connected with the air door guide rod 14 regulating its position.First air air inlet 12 downstream of First air cylindrical shell 9 is provided with uniform flow orifice 16.The Secondary Air air inlet of Secondary Air cylindrical shell 8 is provided with controllability tangential vane 11.The First air exit of First air cylindrical shell 9 and the Secondary Air exit of Secondary Air cylindrical shell are respectively equipped with enlarging 6,7 and gas flame cuttiug block 4,5, and gas flame cuttiug block 4,5 section is wedge type or streamlined.Steady combustion cover 2 is provided with guide ring 3, and its section is wedge type or streamlined.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a horizontal flow burner, comprise the oil burner nozzle of oil gun pipe end, First air cylindrical shell, steady combustion cover and Secondary Air cylindrical shell, it is characterized in that: also comprise and be located on described oil gun pipe, air conditioning block that can be movable along its length thereon, and with described its governor motion moved of air conditioning block connection control, described air conditioning block is streamlined along its moving direction.
2. horizontal flow burner as claimed in claim 1, is characterized in that: described air conditioning block is a spindle.
3. horizontal flow burner as claimed in claim 1, it is characterized in that: described First air cylindrical shell is circumferentially provided with First air air inlet, described First air air inlet is provided with the air door that can move forward and backward, and described air door is connected with the guide rod regulating its position.
4. horizontal flow burner as claimed in claim 1, is characterized in that: the Secondary Air air inlet of described Secondary Air cylindrical shell is provided with controllability tangential vane.
5. horizontal flow burner as claimed in claim 1, is characterized in that: the First air air inlet downstream of described First air cylindrical shell, air conditioning block upstream is provided with uniform flow orifice.
6. horizontal flow burner as claimed in claim 1, is characterized in that: described steady combustion cover is provided with guide ring, and its section is wedge type or streamlined.
7. horizontal flow burner as claimed in claim 1, is characterized in that: the First air exit of described First air cylindrical shell and the Secondary Air exit of described Secondary Air cylindrical shell are respectively equipped with gas flame cuttiug block, and its section is wedge type or streamlined.
8. horizontal flow burner as claimed in claim 1, is characterized in that: the First air exit of described First air cylindrical shell and the Secondary Air exit of described Secondary Air cylindrical shell are respectively equipped with enlarging.
CN201210443187.3A 2012-11-08 2012-11-08 Horizontal flow burner Active CN102927569B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210443187.3A CN102927569B (en) 2012-11-08 2012-11-08 Horizontal flow burner

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Application Number Priority Date Filing Date Title
CN201210443187.3A CN102927569B (en) 2012-11-08 2012-11-08 Horizontal flow burner

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CN102927569A CN102927569A (en) 2013-02-13
CN102927569B true CN102927569B (en) 2015-06-24

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071241A (en) * 1991-09-29 1993-04-21 浙江大学 Adjustable oil nozzle for viscous oil
CN1920382A (en) * 2006-09-04 2007-02-28 东方锅炉(集团)股份有限公司 Rotational flow pulverized coal burner
CN201496957U (en) * 2009-07-31 2010-06-02 戴卫军 Cyclone pulverized coal burner
JP2010249362A (en) * 2009-04-13 2010-11-04 Ihi Corp Burner
CN102500551A (en) * 2011-09-29 2012-06-20 华中科技大学 Device for separating rough and fine coal powder in pipeline
CN102563640A (en) * 2012-01-19 2012-07-11 东方电气集团东方锅炉股份有限公司 Oil burner with high-efficiency burning and low pollution emission

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071241A (en) * 1991-09-29 1993-04-21 浙江大学 Adjustable oil nozzle for viscous oil
CN1920382A (en) * 2006-09-04 2007-02-28 东方锅炉(集团)股份有限公司 Rotational flow pulverized coal burner
JP2010249362A (en) * 2009-04-13 2010-11-04 Ihi Corp Burner
CN201496957U (en) * 2009-07-31 2010-06-02 戴卫军 Cyclone pulverized coal burner
CN102500551A (en) * 2011-09-29 2012-06-20 华中科技大学 Device for separating rough and fine coal powder in pipeline
CN102563640A (en) * 2012-01-19 2012-07-11 东方电气集团东方锅炉股份有限公司 Oil burner with high-efficiency burning and low pollution emission

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