CN204114943U - Roller hearth type heating furnace porous Flat flame burner - Google Patents
Roller hearth type heating furnace porous Flat flame burner Download PDFInfo
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- CN204114943U CN204114943U CN201420584235.5U CN201420584235U CN204114943U CN 204114943 U CN204114943 U CN 204114943U CN 201420584235 U CN201420584235 U CN 201420584235U CN 204114943 U CN204114943 U CN 204114943U
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Abstract
The utility model discloses a kind of roller hearth type heating furnace porous Flat flame burner, comprise central air hose and central air hose one end is connected with burner block unit, on the caliber of central air hose one end, cover has gas pipe and main air unit successively from the inside to the outside, central air hose, gas pipe and main air unit one end are connected with burner block unit, main air unit comprises and is fixed on air main on burner block unit outer wall and is arranged in air main and is fixed on the secondary airduct of brick body other end outer surface, channel connection is sprayed by secondary wind between secondary airduct and flame stabilization chamber, channel connection is sprayed by main air between air main and flame control room, in air main, radial direction is provided with partition panel, partition panel lower end is provided with damper.This burner has flameholding, flatly sprawls simple etc. the feature of flame structure, processing and fabricating, reaches strengthening furnace heat transfer, improves temperature uniformity, improves heater efficiency, delays furnace roller dross process, improves the objects such as heating of plate blank quality.
Description
Technical field
The utility model relates to industrial furnace field of combustion technology, refers to a kind of for sheet billet continuous casting and rolling production line (CSP, ISP, FTSC, CONROLL, QSP etc.) roller hearth type heating furnace porous Flat flame burner particularly.
Background technology
Roller hearth type heating furnace efficiently solves supplementary heating and the buffer technology of slab on sheet billet continuous casting and rolling production line, becomes the important pivot that the techniques such as CSP, ISP, FTSC, CONROLL, QSP connect conticaster and rolling operation line.
Within 2011, people such as intercalation osmanthus Xia Heguan bright grade has delivered the paper being entitled as " silicon steel CSP engineering roller hearth soaking furnace technical characterstic " at periodical " industrial furnace ", which reports certain steel mill domestic and within 2007, build straight-through roller-bottom type tunnel heating furnace overview in the CSP engineering of going into operation, it is equipped with two straight-through roller-bottom type tunnel heating furnaces after conticaster, wherein, outlet is just called A line to the roller-bottom type tunnel heating furnace of milling train. another seat is called B line, the long 260.7m of A line oven, the long 245.9m of B line oven, directly sends into mill milling after entering the heating of plate blank of A line.Enter by two-wire swinging operation after the heating of plate blank of B line, A line end of being made a gift to someone by the steel billet of B line end, then sends into mill milling, the connection of two heating furnaces adopts swing mode, hunting period short (single pendulum 30S, one-period 90S), swing mechanism simple structure, synchronism is good.In order to realize heating cycles different within the scope of heating furnace effective length, heating furnace is divided into multiple functional section and temperature-controlled area, and wherein, A line is divided into three sections of 10 temperature-controlled areas, and B line is divided into two sections of 9 temperature-controlled areas.
A line heating furnace specifically comprises: 1) heating of plate blank, soaking zone, 2) ferry-boat section, 3) share soaking zone; These four segment features are as follows:
(1) heating of plate blank, soaking zone; Strand enters bringing-up section with teeming speed, has heated to enter soaking zone fast afterwards.Accelerate the position of roller to be determined by secondary operation system, when milling train send come out of the stove instruction time, the strand heated is run to milling train direction by soaking zone with prestissimo.Its bringing-up section has four temperature-controlled areas, heats burner and 50 upper burners: soaking delivery section has three temperature-controlled areas, have 39 upper burners under comprising 7.
(2) ferry-boat section; Ferried to by the strand that B line heating furnace heats in A line heating furnace, this section is provided with 1 temperature-controlled area, 25 upper burners.
(3) soaking zone is shared; By A line heating furnace and the slab soaking heated from B line heating furnace, be incubated, come out of the stove.This section is provided with 2 temperature-controlled areas, 31 upper burners.
B line heating furnace specifically comprises: 1) heating of plate blank, soaking zone, 2) ferry-boat section; These three segment features are as follows:
(1) heating of plate blank, soaking zone; Strand enters bringing-up section with teeming speed, has heated to enter soaking zone fast afterwards.Accelerate the position of roller to be determined by secondary operation system, when milling train send come out of the stove instruction time, the strand heated is with prestissimo by soaking zone, and its bringing-up section has four temperature-controlled areas, heats burner and 50 upper burners under comprising 7; Soaking delivery section has four temperature-controlled areas, has 62 upper burners.
(2) ferry-boat section; In A line heating furnace of being ferried to by the strand that B line heating furnace heats ferry-boat section, sent into the common sections of A line heating furnace by the A string pendulum section of crossing, this section is provided with a temperature controlled section, 25 upper burners.Each section adopt that preheating is empty, coal gas by conventional burner heat supply, combustion product gases is by being arranged on each period amount to outside 7 chimneys discharge factory buildings, and the section of ferry-boat does as usual heat supply in ferry-boat process.
The happiness of 2006 Nian Bi states waits people to deliver at periodical " Tianjin is metallurgical " paper being entitled as " Tang's steel sheet continuous-casting tandem-rolling roller hearth type heating furnace technological transformation effect analysis ", describe the serious and heating-up temperature of high, the oxidization burning loss of energy consumption that CSP roller hearth type heating furnace that Tang Gang covers company designs by U.S. Bu Like exists to be difficult to meet the problems such as thin slab product rolling demand, discuss the necessity of heating furnace list heat-accumulation combustion transformation and improved effect.
Calendar year 2001 Zhu Li rams and Zhang Zhanqiang has delivered the paper being entitled as " roller hearth type heating furnace Discussion on Some Problems " at periodical " industry heating ", it is by the structural analysis of roller hearth type heating furnace, indicate that high fume temperature, thermal loss are greatly the intrinsic drawbacks of straight-through roller hearth type heating furnace, propose abundant Appropriate application fume afterheat research topic and set up the Bettering id eas of waste heat boiler.Within 2013, Zhu Lixin and Lu Zhanbao has delivered the paper being entitled as " HanGang CSP Heating Furnace power-saving technology " at periodical " Enterprises in Hebei Province ", which reports the effect of waste heat boiler on HanGang CSP Heating Furnace.
Within 2012, the little roc of journey has delivered at periodical " ripples steel science and technology and management " paper being entitled as " affecting the factor analysis of CSP soaking pit fire box temperature ", it analyzes conventional low Nox high combustion rate burner design feature and high-temperature combustion gas high-speed jet to the homogenization of temperature field in furnace, describe the combustion chamber caused because of burner block breakage in actual production and lack problem, burning gases high-speed jet is caused to be formed, combustion instability, combustion intensity reduces, thus destroy the uniformity of temperature field in furnace, due to the difference of burner block damaged degree, cause different burner combustion intensity different, exacerbate the inhomogeneities of temperature field in furnace further, have impact on heating quality in slab stove.Application number be 2010206767692 Chinese utility model patent disclose a kind of roller-bottom type tunnel heating furnace being applied to sheet billet continuous casting and rolling production line, the problems such as it is high for the energy consumption adopted existing for the roller-bottom type tunnel heating furnace of conventional combustion technology, pollution is large, building area is large, investment is high, single Regenerative Combustion Technology and roller hearth type heating furnace effectively combined, significantly reduces ton steel unit consumption, improve the production capacity of heating furnace.
As can be seen here, for roller hearth type heating furnace, domestic scholars has carried out research and the application work thereof such as a large amount of fuel combustion techniques, power-saving technology, and in actual production, achieve good energy-saving effect.But, due to the through-type structure of roller-bottom type tunnel heating furnace, furnace height is little, width is short, furnace superintendent overlength, although the conventional high combustion rate burner that furnace wall side wall is arranged enhances the stirring of stove combustion gas, improve the uniformity of in-furnace temperature, single heat storage type burner reaches the object reducing heating furnace gas consumption by the high temperature preheating of combustion air, but often because of the length of flame, to exceed stove wide in actual production, imperfect combustion gas jet is turned back after running into furnace wall to slab bottom and is carried out second-time burning, exacerbate the inhomogeneities of in-furnace temperature, furnace roller collars and slab underlaying surface temperature is caused to raise, facilitate high-temperature oxydation and the collars dross of slab lower surface, slab collars is caused to impress aggravation, meanwhile, its rotary body flame structure, is unfavorable for being full of of furnace flame and sprawling of steel slab surface flame, is degrading the radiation heat transfer between furnace gas and slab, not only have impact on the heating quality of slab, also reduce the efficiency of heating surface of heating furnace simultaneously.For this reason, be necessary that developmental research is applicable to the Novel burner nozzle of CSP roller hearth type heating furnace furnace type structure, to improve heating steel billet heat transfer condition in stove, improve heating quality and thermal efficiency of heating furnace.
Utility model content
The utility model is little with conventional roller hearth type heating furnace furnace height based on sheet billet heating, width is short, the straight-through structure feature of furnace superintendent overlength, the flame vertical swept area brought for the conventional high combustion rate burner of heating furnace in current actual production and single heat storage type burner cylindrical fire structure is little, flame long excessive time the furnace roller collars dross that causes of the second-time burning furnace temperature that causes uneven and lower furnace temperature drift and slab impression, the series such as the low high energy consumption caused of efficiency of combustion is not enough, provide a kind of roller hearth type heating furnace roller hearth type heating furnace porous Flat-flame burner.This burner has flameholding, flatly sprawls simple etc. the feature of flame structure, processing and fabricating, reaches strengthening furnace heat transfer, improves temperature uniformity, improves heater efficiency, delays furnace roller dross process, improves the objects such as heating of plate blank quality.
For solving the problems of the technologies described above, a kind of roller hearth type heating furnace porous Flat flame burner that the utility model provides, comprise central air hose and central air hose one end is connected with burner block unit, on the caliber of described central air hose one end, cover has gas pipe and main air unit successively from the inside to the outside, described central air hose, gas pipe and main air unit one end are connected with burner block unit, described burner block unit has flame control room and flame stabilization chamber from outside to inside, described central air hose and gas pipe pass brick body and are communicated with the flame stabilization chamber other end
Described main air unit comprises and is fixed on air main on burner block unit outer wall and is arranged in air main and is fixed on the secondary airduct of brick body other end outer surface, channel connection is sprayed by secondary wind between described secondary airduct and flame stabilization chamber, channel connection is sprayed by main air between described air main and flame control room, in described air main, radial direction is provided with partition panel, described partition panel is vertical with secondary airduct, and air main is separated into one-level air channel and secondary air channel by partition panel, described one-level air channel and main air spray channel connection, the opening of described secondary airduct is arranged in secondary air channel, described partition panel lower end is provided with damper.
Flame stabilization chamber is the cylindrical space of odd-shaped cross section; The cross section in flame control room is for extending out splayed or rectangle.
Further, described main air spray passage in brick body with the axis of burner block unit for reference symmetry is arranged, and often pair of main air spray passage is inverse Ba type, main air spray channel slopes angle≤2 °, described secondary wind spray passage in brick body with the axis of burner block unit for reference symmetry is arranged, and often pair of secondary spray passage is splayed configuration, secondary wind spray channel slopes angle≤3 °.
Again further, described central air hose and flame stabilization chamber are by centre wind spout connection, and described centre wind spout quantity is one or even number, Mei Dui center wind snout with the axis of burner block unit for reference symmetry is arranged.
Again further, described gas pipe and flame stabilization chamber by coal gas gas spout connection, described coal gas gas blowout mouth with the axis of burner block unit for reference symmetry is arranged.
Again further, described central air hose, air main, secondary airduct and the upper shed of gas pipe end sidewalls.
Centre wind spout and coal gas gas blowout mouth is rounded, oval, knuckle is arc transition rectangle or square or circular arc through hole, main air spray passage and secondary wind spray channel cross-section is rounded, oval, knuckle is arc transition rectangle or square or circular arc.
The beneficial effects of the utility model are:
1, the damper that control valve the utility model central air hose arranged and main air unit are arranged, realize the proportion adjustment of centre wind, force one wind, light breeze, control the length of Flat-flame, reduce the formation and exhaust of thermal NO x, avoid the second-time burning problem that length of flame overlength causes, thus improve the temperature homogeneity of upper furnace and bottom, the generation that containment furnace roller collars dross and sheet billet collars impress, improve sheet billet technomania surface quality.Finally reach strengthening furnace heat transfer, improve temperature uniformity, improve heater efficiency, delay furnace roller dross process, improve the objects such as Surface Quality of Steel Billet.
2, the utility model is arranged by the inclination angle of main air spray passage and secondary wind spray passage, and centre wind spout, the structural design that main air spray passage and secondary wind spray passage are arranged for reference symmetry with the axis of burner block unit, combustion air and coal gas is made to stablize mixed combustion on the one hand, guide the level of burning blending agent to sprawl simultaneously, realize combustion medium (coal gas and combustion air) air-flow that burner sprays along the flat distribution in furnace superintendent direction and mixed combustion, form the Flat-flame shape along furnace superintendent direction, overheavy firing flame is to the vertical radiation of sheet billet in stove, improve heat transfer efficiency and thermal efficiency of heating furnace.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the utility model porous Flat-flame burner along stove cross direction;
Fig. 2 is the left view of the burner block regional structure of the utility model structural porous Flat-flame burner;
Fig. 3 is the left view of the burner block regional structure of the utility model structural porous Flat-flame burner;
Fig. 4 is the left view of the burner block regional structure of the utility model structural porous Flat-flame burner;
Fig. 5 is the left view of the burner block regional structure of the utility model structural porous Flat-flame burner;
Fig. 6 is the left view of the burner block regional structure of the utility model structural porous Flat-flame burner;
In figure, central air hose 1, centre wind spout 1.1, main air unit 2 (air main 2.1, one-level air channel 2.11,2.12 times, secondary air channel level airduct 2.2, partition panel 2.3, damper 2.4, secondary wind spray passage 2.5, main air spray passage 2.6), gas pipe 3, coal gas gas blowout mouth 3.1, burner block unit 4 (brick body 4.1, flame stabilization chamber 4.2, flame control room 4.3).
Detailed description of the invention
In order to explain the utility model better, illustrate main contents of the present utility model further below in conjunction with specific embodiment, but content of the present utility model is not only confined to following examples.
Embodiment 1
A kind of roller hearth type heating furnace porous Flat flame burner as shown in Fig. 1 ~ 2, comprise central air hose 1 and central air hose 1 one end is connected with burner block unit 4, on the caliber of central air hose 1 one end, cover has gas pipe 3 and main air unit 2 successively from the inside to the outside, central air hose 1, gas pipe 3 and main air unit 2 one end are connected with burner block unit 4, burner block unit 4 is one end, flame control room 4.3 and flame stabilization chamber 4.2 from outside to inside, central air hose 1 is communicated with by centre wind spout 1.1 with flame stabilization chamber 4.2, centre wind spout 1.1 quantity is, two centre wind spouts 1.1 with the axis of burner block unit 4 for reference symmetry is arranged.
Gas pipe 3 is communicated with by two coal gas gas blowout mouths 3.1 with flame stabilization chamber 4.2, two coal gas gas blowout mouths 3.1 with the axis of burner block unit 4 for reference symmetry is arranged.
Main air unit 2 comprises and is fixed on air main on burner block unit 4 outer wall 2.1 and is arranged in air main 2.1 and is fixed on the secondary airduct 2.2 of brick body 4.1 other end outer surface, central air hose 1, air main 2.1, secondary airduct 2.2 and the upper shed of gas pipe 3 end sidewalls.
Secondary airduct 2.2 with spray passage 2.5 by two secondary wind between flame stabilization chamber 4.2 and be communicated with, two secondary wind spray passages 2.5 in brick body 4.1 with the axis of burner block unit 4 for reference symmetry is arranged, and main air spray passage 2.6 is in splayed configuration, secondary wind spray passage 2.5 angle of inclination≤3 °.
Spray passage 2.6 by two main airs between air main 2.1 with flame control room 4.3 to be communicated with, two main airs spray passage 2.6 in brick body 4.1 with the axis of burner block unit 4 for reference symmetry is arranged, and main air spray passage 2.6 is in inverse Ba type, main air spray passage 2.6 angle of inclination≤2 °.
In air main 2.1, radial direction is provided with partition panel 2.3, partition panel 2.3 is vertical with secondary airduct 2.2, and air main 2.1 is separated into one-level air channel 2.11 and secondary air channel 2.12 by partition panel 2.3, one-level air channel 2.11 and main air spray passage 2.6 and are communicated with, the opening of secondary airduct 2.2 is arranged in secondary air channel 2.12, and partition panel 2.3 lower end is provided with damper 2.4.
In actual mechanical process, flame stabilization chamber 4.2 is the cylindrical space of odd-shaped cross section; The cross section in flame control room 4.3 is for extending out splayed or rectangle.
Centre wind spout 1.1 and coal gas gas blowout mouth 3.1 is rounded, oval, knuckle is arc transition rectangle or square or circular arc through hole, main air spray passage 2.6 and secondary wind spray passage 2.5 cross section are circular, that oval, knuckle is arc transition rectangle or square or circular arc.
Embodiment 2
The porous Flat flame nozzle structure of the present embodiment is substantially the same manner as Example 1, and difference is:
As shown in figs. 1 and 3: centre wind spout 1.1 quantity is one, and centre wind spout 1.1 is arranged on the axis of burner block unit 4.
As shown in Figure 3 and Figure 6, in Fig. 3 with Fig. 6, porous Flat flame nozzle structure is compared, and centre wind spout 1.1, coal gas gas blowout mouth 3.1, main air spray passage 2.6 is different with secondary wind spray passage 2.5 shape.
Embodiment 3
The porous Flat flame nozzle structure of the present embodiment is substantially the same manner as Example 1, and difference is:
As shown in figs. 1 and 4: coal gas gas blowout mouth 3.1 quantity is two right, secondary wind spray passage 2.5 quantity is three right, and main air spray passage 2.6 quantity is two right.
Embodiment 4
The porous Flat flame nozzle structure of the present embodiment is substantially the same manner as Example 3, and difference is:
As described in figures 1 and 5: centre wind spout 1.1 quantity is one, and centre wind spout 1.1 is arranged on the axis of burner block unit 4.
Other unspecified part is prior art.Although above-described embodiment has made detailed description to the utility model; but it is only the utility model part embodiment; instead of whole embodiment; people can also obtain other embodiments according to the present embodiment under without creative prerequisite, and these embodiments all belong to the utility model protection domain.
Claims (5)
1. a roller hearth type heating furnace porous Flat flame burner, comprise central air hose (1) and central air hose (1) one end is connected with burner block unit (4), on the caliber of described central air hose (1) one end, cover has gas pipe (3) and main air unit (2) successively from the inside to the outside, described central air hose (1), gas pipe (3) and main air unit (2) one end are connected with burner block unit (4), described burner block unit (4) has flame control room (4.3) and flame stabilization chamber (4.2) from outside to inside, described central air hose (1) and gas pipe (3) are through brick body (4.1) and be communicated with flame stabilization chamber (4.2) other end,
It is characterized in that: described main air unit (2) comprises the air main (2.1) that is fixed on burner block unit (4) outer wall and to be arranged in air main (2.1) and to be fixed on the secondary airduct (2.2) of brick body (4.1) other end outer surface, described secondary airduct (2.2) is sprayed passage (2.5) with between flame stabilization chamber (4.2) be communicated with by secondary wind, spray passage (2.6) by main air between described air main (2.1) with flame control room (4.3) to be communicated with, described air main (2.1) interior radial direction is provided with partition panel (2.3), described partition panel (2.3) is vertical with secondary airduct (2.2), and air main (2.1) is separated into one-level air channel (2.11) and secondary air channel (2.12) by partition panel (2.3), described one-level air channel (2.11) and main air spray passage (2.6) and are communicated with, the opening of described secondary airduct (2.2) is arranged in secondary air channel (2.12), described partition panel (2.3) lower end is provided with damper (2.4).
2. roller hearth type heating furnace porous Flat flame burner according to claim 1, it is characterized in that: described main air spray passage (2.6) is reference symmetry layout with the axis of burner block unit (4) brick body (4.1) in, and often pair of main air spray passage (2.6) is in inverse Ba type, main air spray passage (2.6) angle of inclination≤2 °, described secondary wind spray passage (2.5) is reference symmetry layout with the axis of burner block unit (4) brick body (4.1) in, and often pair of secondary spray passage (2.5) is in splayed configuration, secondary wind spray passage (2.5) angle of inclination≤3 °.
3. roller hearth type heating furnace porous Flat flame burner according to claim 1 or 2, it is characterized in that: described central air hose (1) is communicated with by centre wind spout (1.1) with flame stabilization chamber (4.2), described centre wind spout (1.1) quantity is one or even number, and Mei Dui center wind snout (1.1) is that reference symmetry is arranged with the axis of burner block unit (4).
4. roller hearth type heating furnace porous Flat flame burner according to claim 1 or 2, it is characterized in that: described gas pipe (3) is communicated with by coal gas gas blowout mouth (3.1) with flame stabilization chamber (4.2), described coal gas gas blowout mouth (3.1) is that reference symmetry is arranged with the axis of burner block unit (4).
5. roller hearth type heating furnace porous Flat flame burner according to claim 1 or 2, is characterized in that: described central air hose (1), air main (2.1), secondary airduct (2.2) and gas pipe (3) end sidewalls upper shed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584235.5U CN204114943U (en) | 2014-10-09 | 2014-10-09 | Roller hearth type heating furnace porous Flat flame burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584235.5U CN204114943U (en) | 2014-10-09 | 2014-10-09 | Roller hearth type heating furnace porous Flat flame burner |
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| CN204114943U true CN204114943U (en) | 2015-01-21 |
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| CN201420584235.5U Expired - Fee Related CN204114943U (en) | 2014-10-09 | 2014-10-09 | Roller hearth type heating furnace porous Flat flame burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
-
2014
- 2014-10-09 CN CN201420584235.5U patent/CN204114943U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170724 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei, Wuchang Friendship Avenue, No. 999, block A, layer 15, layer Patentee before: Wuhan Iron & Steel (Group) Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20191009 |