CN103672894A - Flat-flame combustion mechanism - Google Patents

Flat-flame combustion mechanism Download PDF

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Publication number
CN103672894A
CN103672894A CN201310612540.0A CN201310612540A CN103672894A CN 103672894 A CN103672894 A CN 103672894A CN 201310612540 A CN201310612540 A CN 201310612540A CN 103672894 A CN103672894 A CN 103672894A
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CN
China
Prior art keywords
combustion
cavity
tube connector
air
burning
Prior art date
Application number
CN201310612540.0A
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Chinese (zh)
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CN103672894B (en
Inventor
贺昶明
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成都科盛石油科技有限公司
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Priority to CN201310612540.0A priority Critical patent/CN103672894B/en
Publication of CN103672894A publication Critical patent/CN103672894A/en
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Publication of CN103672894B publication Critical patent/CN103672894B/en

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Abstract

The invention discloses a flat-flame combustion mechanism which comprises a premixing cavity and a combustion mechanism. One side of the premixing cavity is connected with the combustion mechanism by a connecting pipe, a gas inlet pipe is arranged on the other side of the premixing cavity, two air inlets are formed in the other side of the premixing cavity, the gas inlet pipe is arranged between the two air inlets, a hemispherical groove is formed inside the premixing cavity, the bottom of the hemispherical groove is communicated with the connecting pipe, the gas inlet pipe faces the connecting pipe, and a plurality of spiral grooves are further formed in the inner wall of the hemispherical groove. The flat-flame combustion mechanism has the advantages that the multiple spiral grooves are formed in the inner wall of the hemispherical groove, so that turbulent flow can be generated by air and fuel gas, the air and the fuel gas can be uniformly mixed with each other, mixed gas can be assuredly sufficiently combusted after flowing into the combustion mechanism via the connecting pipe, and the flat-flame combustion mechanism is favorable for improving the fuel gas combustion efficiency.

Description

Flat flame combustion mechanism
Technical field
The present invention relates to a kind of burner, specifically refer to flat flame combustion mechanism.
Background technology
Burner is also combustor, according to fuel, can be divided into oil burner and gas burner; According to using object to be divided into kiln burner and boiler-burner; According to application, can be divided into industrial burner, civilian burner and special kind firing device.Wherein oil burner is divided into light oil (as diesel oil) and heavy oil burner (as used oil), and gas burner is divided into neat gas burner, gas burner, town gas burner, biogas burner etc.
In cracking petroleum hydrocarbon technique, need to heat tube furnace, the burner heating of tradition use often makes the suffered thermal stress of each several part of tube furnace different, easily cause the overheated of pipe furnace part, and then accelerate the loss of tube furnace, particularly the head at burner is easy to produce because of excess Temperature combustion gas tempering or explosion phenomenon; And when logical combustion gas, combustion gas mixes inhomogeneous with air, the efficiency of combustion of combustion gas is reduced.
Summary of the invention
The object of the present invention is to provide flat flame combustion mechanism, solve the inadequate problem of traditional burner combustion, improve the efficiency of combustion of burner.
Object of the present invention is achieved through the following technical solutions:
Flat flame combustion mechanism, comprise premix cavity and combustion mechanism, one side of described premix cavity is connected with combustion mechanism by tube connector, on the opposite side of described premix cavity, be provided with air inlet pipe and two air inlets, air inlet pipe is arranged on the centre of two air inlets, in premix cavity, hemispherical groove is installed, and the bottom of hemispherical groove is communicated with tube connector, air inlet pipe, over against tube connector, also has a plurality of helicla flutes on the inwall of described hemispherical groove.When the present invention uses, combustion gas enters into premix cavity by air inlet pipe, by the air inlet leaked-in air at the upper and lower two ends of air inlet pipe, also entering into hybrid chamber mixes for the first time with combustion gas, mixed gas enters into tube connector through hemispherical groove, finally in combustion mechanism, air mixes again with combustion gas, and after fully mixing for twice, combustion gas is lighted to realize the heating of bomb furnace; A plurality of helicla flutes that arrange on hemispherical groove inwall can make air and combustion gas turbulization, and both are mixed, and guarantee when mist enters combustion mechanism after by tube connector to burn fully, are conducive to improve the efficiency of combustion of combustion gas.
Described combustion mechanism comprises burning cavity and nozzle, tube connector is connected with burning cavity, in burning cavity, be provided with rectangle hybrid chamber, nozzle is arranged on the end of tube connector and is communicated with rectangle hybrid chamber, on the end, one end of burning cavity, has a plurality of burning galleries.Nozzle is placed on the bottom of burning cavity, one end of nozzle is communicated with the end of tube connector, its other end is communicated with rectangle hybrid chamber, mist enters into rectangle hybrid chamber under the jet-action of nozzle to be mixed for the second time, after air and the amount of combustion gas reach certain ratio and are fully mixed, by burning gallery combustion gas, lighted, act on equably on pipe furnace, the local heating that avoids occurring pipe furnace is inhomogeneous and cause stress damage, extends the service life of pipe furnace.
Described burning gallery comprises straight way and the taper road being interconnected, and straight way is communicated with rectangle hybrid chamber, and taper road is in communication with the outside, and on described taper road inwall, is provided with groove.In nozzle mixed gas injection for the first time, enter in rectangle hybrid chamber, between combustion gas and air, mix again, the gas that secondary mixes is along with air-flow enters in burning gallery, after the acceleration of straight way, the gas that secondary mixes enters into taper road, the minimum diameter in taper road is identical with the internal diameter of straight way, so the gas that secondary mixes is evenly dispersed under the effect of groove, makes combustion gas be lighted rear abundant burning.
The diameter of described tube connector increases gradually along airintake direction.One end of tube connector is connected with conical pipe, the other end of tube connector is connected with nozzle, in conical pipe, the flow velocity of mist is very fast gradually, and the diameter of tube connector increases gradually along airintake direction, and then slow down the flow velocity of mist, reduce the impact of mist to nozzle, contribute to the service life of prolonging nozzle.
On described air inlet, be provided with control valve.The control valve arranging is real-time adjusting air inflow quantity and intake according to actual needs, combustion gas in mist and the ratio of air are remained in certain ratio, guarantee that mist has higher efficiency of combustion in combustion mechanism, make the regulation and control of pipe furnace heating more flexible.
The present invention compared with prior art, has following advantage and beneficial effect:
1, flat flame combustion mechanism of the present invention, comprise premix cavity and combustion mechanism, one side of described premix cavity is connected with combustion mechanism by tube connector, on the opposite side of described premix cavity, be provided with air inlet pipe and two air inlets, air inlet pipe is arranged on the centre of two air inlets, in premix cavity, hemispherical groove is installed, and the bottom of hemispherical groove is communicated with tube connector, air inlet pipe, over against tube connector, also has a plurality of helicla flutes on the inwall of described hemispherical groove; A plurality of helicla flutes that arrange on hemispherical groove inwall can make air and combustion gas turbulization, and both are mixed, and guarantee when mist enters combustion mechanism after by tube connector to burn fully, are conducive to improve the efficiency of combustion of combustion gas;
2, flat flame combustion mechanism of the present invention, in nozzle mixed gas injection for the first time, enter in rectangle hybrid chamber, between combustion gas and air, mix again, the gas that secondary mixes is along with air-flow enters in burning gallery, after the acceleration of straight way, the gas that secondary mixes enters into taper road, and the minimum diameter in taper road is identical with the internal diameter of straight way, therefore the gas that secondary mixes is evenly dispersed under the effect of groove, makes combustion gas be lighted rear abundant burning;
3, flat flame combustion mechanism of the present invention, nozzle is placed on the bottom of burning cavity, one end of nozzle is communicated with the end of tube connector, its other end is communicated with rectangle hybrid chamber, mist enters into rectangle hybrid chamber under the jet-action of nozzle to be mixed for the second time, after air and the amount of combustion gas reach certain ratio and are fully mixed, by burning gallery combustion gas, lighted, act on equably on pipe furnace, the local heating that avoids occurring pipe furnace is inhomogeneous and cause stress damage, extends the service life of pipe furnace.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms the application's a part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Mark and corresponding parts title in accompanying drawing:
1-premix cavity, 2-tube connector, 3-air inlet pipe, 4-air inlet, 5-hemispherical groove, 6-helicla flute, 7-burning cavity, 8-nozzle, 9-rectangle hybrid chamber, 10-straight way, 11-taper road, 12-air control valve, 13-groove.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment
As shown in Figure 1, flat flame combustion mechanism of the present invention, comprise premix cavity 1 and combustion mechanism, one side of described premix cavity 1 is connected with combustion mechanism by tube connector 2, on the opposite side of described premix cavity 1, be provided with air inlet pipe 3 and two air inlets 4, air inlet pipe 3 is arranged on the centre of two air inlets 4, hemispherical groove 5 is installed in premix cavity 1, the bottom of hemispherical groove 5 is communicated with tube connector 2, air inlet pipe 2, over against tube connector, also has a plurality of helicla flutes 6 on the inwall of described hemispherical groove 5; Described combustion mechanism comprises burning cavity 7 and nozzle 8, tube connector 2 is connected with burning cavity 7, in burning cavity 7, be provided with rectangle hybrid chamber 9, nozzle 8 is arranged on the end of tube connector 2 and is communicated with rectangle hybrid chamber 9, on the end, one end of burning cavity 7, has a plurality of burning galleries; Described burning gallery comprises straight way 10 and the taper road 11 being interconnected, and straight way 10 is communicated with rectangle hybrid chamber 9, and taper road 11 is in communication with the outside, and on described taper road 11 inwalls, is provided with groove 13.
When the present invention uses, combustion gas enters into premix cavity 1 by air inlet pipe 3, by air inlet 4 leaked-in airs at air inlet pipe two ends Shang Xia 3, also entering into premixed cavity 1 mixes for the first time with combustion gas, mixed gas enters into tube connector 2 through hemispherical groove 5, nozzle 8 is placed on the bottom of burning cavity 7, one end of nozzle 8 is communicated with the end of tube connector 2, its other end is communicated with rectangle hybrid chamber 9, mist enters into rectangle hybrid chamber 9 under the jet-action of nozzle 8 to be mixed for the second time, after air and the amount of combustion gas reach certain ratio and are fully mixed, by burning gallery combustion gas, lighted, act on equably on pipe furnace, the local heating that avoids occurring pipe furnace is inhomogeneous and cause stress damage, extend the service life of pipe furnace, in nozzle 8 mixed gas injection for the first time, enter in rectangle hybrid chamber 9, between combustion gas and air, mix again, the gas that secondary mixes is along with air-flow enters in burning gallery, after the acceleration of straight way, the gas that secondary mixes enters into taper road 11, the minimum diameter in taper road 11 is identical with the internal diameter of straight way 10, so the gas that secondary mixes is evenly dispersed under the effect of groove 13, makes combustion gas be lighted rear abundant burning, a plurality of helicla flutes 6 that arrange on hemispherical groove 5 inwalls can make air and combustion gas turbulization, and both are mixed, and guarantee when mist enters combustion mechanism after by tube connector 2 to burn fully, are conducive to improve the efficiency of combustion of combustion gas.
On described air inlet 4, be provided with air control valve 12, can regulate in real time according to actual needs intake, combustion gas in mist and the ratio of air are remained in certain ratio, guarantee that mist has higher efficiency of combustion in combustion mechanism, make the regulation and control of pipe furnace heating more flexible.
The above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (5)

1. flat flame combustion mechanism, comprise premix cavity (1) and combustion mechanism, one side of described premix cavity (1) is connected with combustion mechanism by tube connector (2), it is characterized in that: on the opposite side of described premix cavity (1), be provided with air inlet pipe (3) and two air inlets (4), air inlet pipe (3) is arranged on the centre of two air inlets (4), hemispherical groove (5) is installed in premix cavity (1), the bottom of hemispherical groove (5) is communicated with tube connector (2), air inlet pipe (3) is over against tube connector (2), on the inwall of described hemispherical groove (5), also have a plurality of helicla flutes (6).
2. flat flame combustion mechanism according to claim 1, it is characterized in that: described combustion mechanism comprises burning cavity (7) and nozzle (8), tube connector (2) is connected with burning cavity (7), in burning cavity (7), be provided with rectangle hybrid chamber (9), nozzle (8) is arranged on the end of tube connector (2) and is communicated with rectangle hybrid chamber (9), on the end, one end of burning cavity (7), has a plurality of burning galleries.
3. flat flame combustion mechanism according to claim 2, it is characterized in that: described burning gallery comprises straight way (10) and taper road (11) that are interconnected, straight way (10) is communicated with rectangle hybrid chamber (9), taper road (11) is in communication with the outside, and on described taper road (11) inwall, is provided with groove (13).
4. flat flame combustion mechanism according to claim 1, is characterized in that: the diameter of described tube connector (2) increases gradually along airintake direction.
5. flat flame combustion mechanism according to claim 1, is characterized in that: air control valve (12) is also installed on described air inlet (4).
CN201310612540.0A 2013-11-28 2013-11-28 Flat-flame combustion mechanism CN103672894B (en)

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Application Number Priority Date Filing Date Title
CN201310612540.0A CN103672894B (en) 2013-11-28 2013-11-28 Flat-flame combustion mechanism

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Application Number Priority Date Filing Date Title
CN201310612540.0A CN103672894B (en) 2013-11-28 2013-11-28 Flat-flame combustion mechanism

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CN103672894A true CN103672894A (en) 2014-03-26
CN103672894B CN103672894B (en) 2016-02-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH109516A (en) * 1996-06-19 1998-01-16 Sanyo Electric Co Ltd Premixing gas burner of flat flame type
CN2546752Y (en) * 2002-01-07 2003-04-23 李忠芳 Hollow annular sandwich type gas burner
CN2632503Y (en) * 2003-07-04 2004-08-11 湖南吉祥燃烧器股份有限公司 Low pressure premixed high performance energy saving and environment protecting gas burner with flat flame and less NOx exhaust
CN101220955A (en) * 2006-11-08 2008-07-16 通用电气公司 Method and apparatus for enhanced mixing in premixing devices
CN201628221U (en) * 2010-04-16 2010-11-10 毛羽 Novel side wall gas burner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH109516A (en) * 1996-06-19 1998-01-16 Sanyo Electric Co Ltd Premixing gas burner of flat flame type
CN2546752Y (en) * 2002-01-07 2003-04-23 李忠芳 Hollow annular sandwich type gas burner
CN2632503Y (en) * 2003-07-04 2004-08-11 湖南吉祥燃烧器股份有限公司 Low pressure premixed high performance energy saving and environment protecting gas burner with flat flame and less NOx exhaust
CN101220955A (en) * 2006-11-08 2008-07-16 通用电气公司 Method and apparatus for enhanced mixing in premixing devices
CN201628221U (en) * 2010-04-16 2010-11-10 毛羽 Novel side wall gas burner

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Effective date of registration: 20160624

Address after: 610000 Sichuan city of Chengdu province high tech Zone sub Road No. 88 2 10 storey building No. 1002

Patentee after: SICHUAN XINGZHI ZHIHUI INTELLECTUAL PROPERTY OPERATION CO., LTD.

Address before: 610000 Sichuan city of Chengdu province high tech Zone Shiyang Industrial Park

Patentee before: Chengdu Kesheng Petroleum Technology Co., Ltd.

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