CN202692053U - Air distribution and flame stabilization device for flat flame burner - Google Patents
Air distribution and flame stabilization device for flat flame burner Download PDFInfo
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- CN202692053U CN202692053U CN 201220197862 CN201220197862U CN202692053U CN 202692053 U CN202692053 U CN 202692053U CN 201220197862 CN201220197862 CN 201220197862 CN 201220197862 U CN201220197862 U CN 201220197862U CN 202692053 U CN202692053 U CN 202692053U
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Abstract
The utility model relates to the technical field of metallurgy, in particular to an air distribution and flame stabilization device for a flat flame burner. The air distribution and flame stabilization device comprises a gas nozzle flame stabilization device, wherein an air distribution disc is sleeved on the gas nozzle flame stabilization device; a circle of inclined holes are formed in a side wall of the air distribution disc; a circle of inclined slotted holes are arranged in the circumferential edge; the gas nozzle flame stabilization device is of a cap-shaped structure, an open end of the gas nozzle flame stabilization device is communicated with a gas core pipe, and a closed end of the gas nozzle flame stabilization device is provided with a concave brim; and a circle of annular holes are arranged between the brim and the air distribution disc. According to the air distribution disc, air can be classified into three stages, wherein primary air forms a high-speed jet to scatter gas, secondary air forms a high-speed attached rotational flow to flatten the flame, and tertiary air has effects of cooling a conduit and trimming the flame shape. A mixed gas rotational flow is formed under the flow guide action of the concave brim of a flame stabilization head, so that the uniformity in hearth temperature is guaranteed. The air distribution and flame stabilization device has the advantages of simple and compact structure, convenience in machining and assembly, and easiness and convenience in use and system maintenance and reconstruction.
Description
Technical field
The utility model relates to metallurgical technology field, relates in particular to a kind of air distribution flame holder that is applied to burner on heating furnace and the heat-treatment furnace.
Background technology
The flat flame combustion technology is a kind of novel, efficient, the clean combustion technology that grows up on strong rotating jet combustion technology basis.Since coming out the sixties in last century, especially in metallurgical industry, be widely used at industrial department.The flame of flat flame burner ejection be pasting the furnace wall to around the disc thin layer that stretches, namely form subtended angle and be 180 ° open and flat flame.Flat flame burner has compared with general updraft burner that flame holding is good, Flame Temperature Distribution evenly, NO
1, NO
2Generate the series of advantages such as discharge capacity is few, the workpiece heating is fast, anti-oxidation, be mainly used in heated parts can not with industrial furnace that naked light contacts on.At home in the iron and steel metallurgical industry, flat flame burner is widely used in adopting on the heater for rolling steel furnace roof, heat-treatment furnace of conventional combustion mode, in order to form stable open and flat flame, steady flame device of air distribution of burner indoor design, but the structure relative complex of the steady flame device of existing air distribution, process and assemble inconvenience.
The utility model content
For the problems referred to above, the purpose of this utility model is to improve a kind of flame and forms flat flame burner more steady and simple and compact for structure air distribution flame holder.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of flat flame burner air distribution flame holder, be arranged on flat flame burner inside, flat flame burner is connected in sequence by burner block, the air duct housing, the gas piping housing that are used to into air, burner block is provided with the spout that is bell mouth shape, coal gas core pipe end passes from air duct housing center, stretches in the spout in the burner block, head end is fixed on the gas piping housing and with gas inlet and is communicated with; It is characterized in that: described coal gas core pipe end is fixedly connected with the gas-jet flame holder, be set with air-distributing disc on the gas-jet flame holder, described air-distributing disc sidewall is provided with a circle inclined hole, inclined hole is assembled towards coal gas core pipe end direction, and the air-distributing disc circumferential edge is along being provided with a circle tilted slotted hole that makes gas form adherent eddy flow; Described gas-jet flame holder is the cap-like structure of an end opening, end sealing, and openend is communicated with described coal gas core pipe, and blind end is provided with the matrix shade, is provided with a ring hole between shade and the described air-distributing disc.
Described gas piping housing end face is provided with two electrode holes, and electrode is positioned air air-distributing disc end by spout and the end that electrode hole penetrates burner block, and electrode is electrically connected with high voltage package.
Be provided with the burner conduit between the spout of described burner block and the air-distributing disc, the burner conduit embeds in the spout of burner block path side.
Air-distributing disc of the present utility model can divide air three grades, and primary air forms high-speed jet by the ejection of the inclined hole on the air-distributing disc, and the coal gas of gas-jet ejection is broken up, and accelerates space gas and mixes; Auxiliary air forms the adherent eddy flow of high speed by the ejection of the tilted slotted hole on the air-distributing disc circumference, and the condition of necessity is provided for the formation of open and flat flame; A small amount of tertiary air mainly plays cooling duct and finishing flame profile by the annular ejection of the gap between air-distributing disc and burner conduit.Tertiary air forms the gaseous mixture eddy flow under the guide functions of steady flame head matrix shade, form more stable open and flat flame, has guaranteed the uniformity of fire box temperature.Structure wants simple compact than common flat flame burner, is convenient to process and assemble; The whole employing of burner modularized design is used and system maintenance is transformed very easy.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment when using;
Fig. 2 is the front view of the utility model embodiment;
Fig. 3 is the schematic three dimensional views of the utility model embodiment exterior line when using;
Description of symbols among the figure: 1-burner block, 2-burner conduit, 3-gas-jet flame holder, 4-air-distributing disc, 5-coal gas core pipe, 6-air duct housing, 7-the first pressure valve, 8-gas piping housing, the 9-peep-hole, 13-air intlet, 14-gas inlet, 15-the second pressure valve, 16-body of heater surface, 17-gaspipe line, 18-electromagnetic valve, 19-hand valve, the 20-air pipe line, 21-is with the flat flame burner of automatic ignition and flame detection, the 401-electrode hole, 402-inclined hole, 403-tilted slotted hole.
The specific embodiment
For understanding better the utility model, below in conjunction with embodiment and accompanying drawing the technical solution of the utility model is described further, referring to Fig. 1 to Fig. 3:
According to the flat flame burner air distribution flame holder that the utility model is implemented, be applied in flat flame burner inside, flat flame burner mainly comprises burner block 1, air duct housing 6, gas piping housing 8, coal gas core pipe 5.Burner block 1 is for having the cylinder of trumpet type spout, horizontal positioned.Weld anchor nails on its afterbody fixed head, 1 dozen of castable moulding of burner block, 1350 ℃ of long-term serviceability temperatures, high-temperature resistant grade can reach 1600 ℃; Burner block 1 is imported and exported the necessary condition calculative determination that diameter and length form according to burner power and open and flat flame: at first choose suitable coal gas spray orifice equivalent radius according to burner power and design ejection flow velocity, and then according to the swirl strength computing formula
Calculate burner block 1 inlet diameter R, wherein S is swirl strength, generally gets S＞=0.6 and o'clock can form strong eddy flow and then form open and flat air-flow, and r is coal gas spray orifice equivalent radius, and α is air air-distributing disc eddy flow angle.Calculate burner block 1 bell-mouthed length according to swirl strength and flame spouting velocity afterwards, determine discharge area and then definite burner block 1 large footpath size according to design power and flame ejection intensity again.Burner block 1 path side is equipped with burner conduit 2, and the end face of homonymy connects the end face of air duct housing 6.The 6 whole employing carbon steel precision casting moulding of air duct housing, both ends of the surface are equipped with adpting flange and connect respectively burner block 1 and gas piping housing 8 by adpting flange, air duct housing vertical direction is provided with air intlet 13, pressure-tapping nozzle installing hole, air intlet 13 is communicated with air pipe line 20, and the pressure-tapping nozzle installing hole is installed the first pressure-tapping nozzle 7.Machine-shaping behind the gas piping housing 8 employing carbon steel precision castings, vertical direction is provided with gas inlet 14 and is communicated with gaspipe line 17, the inner vertical channel that adopts is communicated with coal gas installation of core pipe hole, be provided with adpting flange with air duct housing 6 links, the other end has peep-hole installing hole, earth stud installing hole and pressure-tapping nozzle installing hole, and peep-hole 9, earth stud and the second pressure-tapping nozzle 15 are installed respectively.Coal gas core pipe 5 head ends pass from air duct housing 6 centers, stretch into behind the burner conduit 2 in burner block 1 spout and gas-jet flame holder 3 is welded and fixed, end is fixed in the coal gas installation of core pipe hole on the gas piping housing 8, and is communicated with gas inlet 14 on the gas piping housing 8.Suit air-distributing disc 4 can be regulated the position of air-distributing disc 4 in burner conduit 2 by installation dimension on the gas-jet flame holder 3.
Air-distributing disc 4 adopts numerical control machine-shaping, sidewall is processed with a circle inclined hole 402, and inclined hole 402 is assembled towards coal gas core pipe end direction, and air-distributing disc 4 circumferential edge are along processing one circle tilted slotted hole 403, tilted slotted hole 403 oblique identical, thus so that the gas that passes through forms adherent eddy flow.Air by air-distributing disc 4 divides three grades, and primary air forms high-speed jet by inclined hole 402 ejections on the air-distributing disc 4, and the coal gas of gas-jet 3 ejections is broken up, and accelerates space gas and mixes; Auxiliary air forms the adherent eddy flow of high speed by tilted slotted hole 403 ejections on air-distributing disc 4 circumference, and the condition of necessity is provided for the formation of open and flat flame; A small amount of tertiary air mainly plays cooling duct and repairs flame profile by the gap annular ejection of 2 in air-distributing disc 4 and burner conduit.
Gas-jet flame holder 3 adopts numerical control machine-shaping, its side has a ring hole, the coal gas of ejection is broken up mixing by the high-speed jet that air-distributing disc 4 sprays, and forms the gaseous mixture eddy flow under the guide functions of steady flame head matrix shade, and the loudspeaker spout by burner block 1 forms open and flat flame.
The utility model also can be automatic ignition when using, need installing electrodes, gas piping housing 8 end faces have electrode mounting hole, electrode penetrates by the electrode mounting hole on the gas piping housing 8, successively by pressing the position of strict fitted position control electrode end after gas piping housing 8, air duct housing 6 and the air-distributing disc 4, with the sparking effect of assurance with gas-jet flame holder 3, the end that electrode exposes electrode mounting hole is electrically connected with high voltage package, high voltage package discharge sparking.
Implementation process of the present utility model is: be equipped with hand valve 19 on gaspipe line 17 and the air pipe line 20, by space gas flow and the proportioning of the single burner of hand valve 19 capable of regulatings, to reach more satisfactory combustion efficiency.First air hand valve 19 is transferred to correct position before the burner igniting, when controller is received ignition order, the discharge of control high voltage package makes the electrode sparking, electromagnetic valve 18 on the gaspipe line 17 is opened simultaneously, and coal gas passes into burner, with the combustion air mixed combustion that passes into burner always, primary air is by inclined hole 402 ejections on the air-distributing disc 4, form high-speed jet, the coal gas of gas-jet voltage-stablizer 3 ejections is broken up, accelerate space gas and mix.Auxiliary air forms the adherent eddy flow of high speeds by tilted slotted hole 403 ejections on air-distributing disc 4 circumference, and a small amount of tertiary air mainly plays cooling duct and repairs flame profile by the gap annular ejection of 2 in air-distributing disc 4 and burner conduit.When burner is received flame-out signal, close gaspipe line 17, fray-out of flame, combustion air continues to pass into the effect of playing the cooling protection burner.This flat flame burner 21 flame holdings with automatic ignition and flame detecting device are good, and Flame Temperature Distribution is even, NO
1, NO
2The generation discharge capacity is few, and the workpiece heating is fast, can significantly reduce the oxidation that is heated workpiece.
Above disclosed only is preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalence of therefore doing according to the utility model claim changes, and still belongs to protection domain of the present utility model.
Claims (3)
1. flat flame burner air distribution flame holder, be arranged on flat flame burner inside, flat flame burner is connected in sequence by burner block (1), the air duct housing (6), the gas piping housing (8) that are used to into air, burner block (1) is provided with the spout that is bell mouth shape, coal gas core pipe (5) is terminal to be passed from air duct housing (6) center, stretches in the spout in the burner block (1), that head end is fixed in gas piping housing (8) is upper and be communicated with gas inlet; It is characterized in that: described coal gas core pipe (5) end is fixedly connected with gas-jet flame holder (3), the upper suit of gas-jet flame holder (3) air-distributing disc (4), described air-distributing disc (4) sidewall is provided with a circle inclined hole, inclined hole is assembled towards coal gas core pipe (5) end direction, and air-distributing disc (4) circumferential edge is along being provided with a circle tilted slotted hole that makes gas form adherent eddy flow; Described gas-jet flame holder (3) is the cap-like structure of an end opening, end sealing, and openend is communicated with described coal gas core pipe (5), and blind end is provided with the matrix shade, is provided with a ring hole between shade and the described air-distributing disc (4).
2. flat flame burner according to claim 1 air distribution flame holder, it is characterized in that: described gas piping housing (8) end face is provided with two electrode holes, electrode (10) is positioned air air-distributing disc (4) end by spout and the end that electrode hole penetrates burner block (1), and electrode (10) is electrically connected with high voltage package.
3. flat flame burner according to claim 1 air distribution flame holder is characterized in that: be provided with burner conduit (2) between the spout of described burner block (1) and the air-distributing disc (4), in the spout of burner conduit (2) embedding burner block (1) path side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197862 CN202692053U (en) | 2012-05-05 | 2012-05-05 | Air distribution and flame stabilization device for flat flame burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197862 CN202692053U (en) | 2012-05-05 | 2012-05-05 | Air distribution and flame stabilization device for flat flame burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692053U true CN202692053U (en) | 2013-01-23 |
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ID=47547665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220197862 Expired - Fee Related CN202692053U (en) | 2012-05-05 | 2012-05-05 | Air distribution and flame stabilization device for flat flame burner |
Country Status (1)
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|---|---|
| CN (1) | CN202692053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679353A (en) * | 2012-05-05 | 2012-09-19 | 中冶南方(武汉)威仕工业炉有限公司 | Air distribution flame holder for flat flame nozzles |
| CN104266189A (en) * | 2014-10-10 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Low-calorific-value gas radiant tube burner and control method thereof |
-
2012
- 2012-05-05 CN CN 201220197862 patent/CN202692053U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679353A (en) * | 2012-05-05 | 2012-09-19 | 中冶南方(武汉)威仕工业炉有限公司 | Air distribution flame holder for flat flame nozzles |
| CN104266189A (en) * | 2014-10-10 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Low-calorific-value gas radiant tube burner and control method thereof |
| CN104266189B (en) * | 2014-10-10 | 2016-05-25 | 中冶南方(武汉)威仕工业炉有限公司 | Control method of low-calorific-value gas radiant tube burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140505 |