CN209213857U - A kind of fully-premixed flameless combustion low NO - Google Patents
A kind of fully-premixed flameless combustion low NO Download PDFInfo
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- CN209213857U CN209213857U CN201821688451.9U CN201821688451U CN209213857U CN 209213857 U CN209213857 U CN 209213857U CN 201821688451 U CN201821688451 U CN 201821688451U CN 209213857 U CN209213857 U CN 209213857U
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Abstract
A kind of fully-premixed flameless combustion low NO, including venturi mixer, blower, connecting tube and combustion head, the outlet of the entrance and venturi mixer of the blower connects, the outlet of the blower and one end of connecting tube connect, the other end of the connecting tube and the fixing end of combustion head connect, and the fire end of combustion head is extend into the burner hearth of boiler；The combustion head includes fixed plate, combustion barrel, burning web liner and burning web, one end of the combustion barrel is equipped with fixed plate, the other end of the combustion barrel is equipped with the burning web liner towards extension on the inside of combustion barrel, and the burning web liner is equipped with burning web towards the one side on the outside of combustion barrel.Burning web is arranged in lining in burning web, when making the premixed gas of air and natural gas by burning web, it can uniformly be passed through from burning web, make premixed gas in the surface homogenous combustion of burning web, it avoids combustion barrel from generating localized hyperthermia, guarantees the normal operation of burner.
Description
Technical field
The utility model belongs to technical field of burner, and in particular to a kind of fully-premixed flameless combustion low NO.
Background technique
Conventional metals combustion barrel surface combustion heating mode, when heated, generating condensed water can drip on metal burning cylinder,
Serious corrosion can be generated to combustion barrel, so as to shorten the service life of combustion head；Meanwhile traditional heating mode combustion barrel surface
Flame distance it is shorter, combustion flame can not cover entire burner hearth.
Utility model content
Utility model aims to solve above-mentioned problems existing in the prior art, provide a kind of fully-premixed nonflame
Burn low NO, is mixed air and natural gas according to a certain percentage before entering combustion head using venturi mixer
It closes, keeps combustion of natural gas more abundant, reduce the discharge amount of carbon monoxide, burning web is arranged in lining in burning web, makes air
When passing through burning web with the premixed gas of natural gas, it can uniformly be passed through from burning web, make premixed gas in burning web
Surface homogenous combustion avoids combustion barrel from generating localized hyperthermia, guarantees the normal operation of burner.
The utility model is achieved through the following technical solutions:
A kind of fully-premixed flameless combustion low NO, including venturi mixer, blower, connecting tube and combustion head,
The outlet of the entrance and venturi mixer of the blower connects, and the outlet of the blower and one end of connecting tube connect, described
The other end of connecting tube and the fixing end of combustion head connect, and the fire end of combustion head is extend into the burner hearth of boiler；Using literary mound
In mixer air and natural gas are mixed according to a certain percentage before entering combustion head, keep combustion of natural gas more abundant,
Reduce the discharge amount of carbon monoxide；
The combustion head includes fixed plate, combustion barrel, burning web liner and burning web, and one end of the combustion barrel is equipped with solid
Fixed board, the other end of the combustion barrel are equipped with the burning web liner towards extension on the inside of combustion barrel, the burning web liner direction
The one side of combustion barrel fire end is equipped with burning web.Burning web is arranged in lining in burning web, makes the premix gas of air and natural gas
When body passes through burning web, it can uniformly be passed through from burning web, make premixed gas in the surface homogenous combustion of burning web, avoid
Combustion barrel generates localized hyperthermia, guarantees the normal operation of burner.
Lining is equipped with several ventholes in the burning web, and the profile of the burning web liner is taper.In burning web
Several ventholes are arranged in lining, and premixed gas can be made to become more to disperse when through burning web liner, to premixed gas into
The primary dispersion of row improves the uniformity of even mixed gas burning.
Angle formed by the bus of the burning web liner and the axis of burning web liner is 15 °~35 °.It will be in burning web
The bus of lining and the axis of burning web liner are arranged to 15 °~35 ° of angle, by adjusting the angular range of angle, change fire
The burning extent of flame heats burner to boiler rapider.
Angle formed by the bus of the burning web liner and the axis of rotary table is 30 °.Using 30 ° of angle, Neng Gouda
To best combustion efficiency, it can guarantee that combustion flame is deep into the distance in the burner hearth of boiler, meet the need heated rapidly
It asks.
The burning web is metal knitted web.Using metal web, stabilization is played in material softness and impact resistance
The effect of flame, can be realized flameless combustion, combustion head can be made to be in low-temperature condition always, and extend combustion head uses the longevity
Life, combustion head carries out flameless combustion in the burner hearth of boiler, makes entire burner hearth full of cold flame, can reduce nitrogen oxides and
The discharge amount of carbon monoxide realizes low nitrogen burning.
The material of the burning web be Aludirome, Aludirome net have superior heat resistance, antioxygenic property,
Resistance to SO_2 and anti-carburizing are capable of the aging of retarded combustion head, prolong the service life, and have light specific gravity, surface loading high, electric
High and high using the temperature feature of resistance rate, can be improved the efficiency of combustion of combustion head, at the same greatly reduce carbon monoxide and
The discharge of the harmful substances such as nitrogen oxides reduces the pollution to environment.
The material of the fixed plate, combustion barrel and burning web liner is stainless steel.Using in the application, use it is stainless
Steel pattern number are as follows: 310S, 310S stainless steel can high temperature resistant, heat resisting temperature be higher than 1200 DEG C, be able to extend combustion head use the longevity
Life.
The outer wall of the combustion barrel is equipped with igniter and flame sensor towards burning web liner direction, setting igniting
Device can be realized automatic firing function, and setting flame sensor can be realized the detection to flame, judge whether to light, avoid even
The detonation of mixed gas.
The connecting tube includes flange, inner cylinder, outer barrel and baffle, and one end of the inner cylinder is equipped with flange, described
The other end of inner cylinder is equipped with baffle, and the outer sheath of the inner cylinder is equipped with outer barrel, the both ends of the outer barrel respectively with method
Orchid connects with baffle, and connecting tube is arranged between blower and combustion head, can be realized the even transition of premixed gas, improves premix
The flow field property of gas flowing.
The inner cylinder is circle towards one end of flange, and the inner cylinder is rectangle towards one end of baffle, will be connected
Inner cylinder one end of pipe is arranged to circle, and other end setting is rectangular, connect respectively with blower and combustion head, improves even mixed gas
Passability.
Compared with prior art, the utility model has the beneficial effects that
1, a kind of fully-premixed flameless combustion low NO of the utility model, using venturi mixer by air and
Natural gas mixes according to a certain percentage before entering combustion head, keeps combustion of natural gas more abundant, reduces the row of carbon monoxide
High-volume, burning web is arranged in lining in burning web, can be uniform when making the premixed gas of air and natural gas by burning web
It is passed through from burning web, makes premixed gas in the surface homogenous combustion of burning web, combustion barrel is avoided to generate localized hyperthermia, guarantee combustion
The normal operation of burner；
2, a kind of fully-premixed flameless combustion low NO of the utility model, lining setting is several logical in burning web
Stomata, can make premixed gas become more to disperse when through burning web liner, once be dispersed to premixed gas, improve
The uniformity of even mixed gas burning；
3, a kind of fully-premixed flameless combustion low NO of the utility model, by the bus of burning web liner and burning
The axis of net liner is arranged to 15 °~35 ° of angle, by adjusting the angular range of angle, changes the burning extent of flame, makes
Burner is rapider to boiler heating, using 30 ° of angle, can reach best combustion efficiency, can guarantee to burn
Flame is deep into the distance in the burner hearth of boiler, meets the needs of heating rapidly；
4, a kind of fully-premixed flameless combustion low NO of the utility model, using metal web, material is soft
And impact resistance plays the role of stable flame, can be realized flameless combustion, combustion head can be made to be in low-temperature condition always,
The service life of combustion head is extended, combustion head carries out flameless combustion in the burner hearth of boiler, makes entire burner hearth full of low temperature fire
Flame can reduce the discharge amount of nitrogen oxides and carbon monoxide, realize low nitrogen burning；
5, a kind of fully-premixed flameless combustion low NO of the utility model, setting igniter can be realized automatic point
Fiery function, setting flame sensor can be realized the detection to flame, judge whether to light, avoid even mixed gas explosion；
6, a kind of fully-premixed flameless combustion low NO of the utility model is arranged between blower and combustion head and connects
Adapter tube can be realized the even transition of premixed gas, the flow field property of premixed gas flowing be improved, by inner cylinder one end of connecting tube
It is arranged to circle, other end setting is rectangular, connect respectively with blower and combustion head, improves the passability of even mixed gas.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model, attached drawing needed in description will be made below
Simply introduce, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the connecting tube front axle geodesic structure schematic diagram of the utility model；
Fig. 3 is the connecting tube rear isometric structural schematic diagram of the utility model；
Fig. 4 is the connecting tube backsight structural representation of the utility model；
Fig. 5 is the connecting tube schematic view of the front view of the utility model；
Fig. 6 is B-B the schematic diagram of the section structure in Fig. 5；
Fig. 7 is the combustion head axis geodesic structure schematic diagram of the utility model；
Fig. 8 is the combustion head schematic view of the front view of the utility model；
Fig. 9 is C-C the schematic diagram of the section structure in Fig. 8；
Figure 10 is the utility model igniter and flame sensor structural schematic diagram；
Wherein, 1, venturi mixer, 2, blower, 3, connecting tube, 4, combustion head, 5, flange, 6, inner cylinder, 7, outer cylinder
Body, 8, mounting hole, 9, baffle, 10, fixed plate, 11, combustion barrel, 12, burning web liner, 13, burning web, 14, igniter, 15,
Flame sensor.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, a kind of fully-premixed flameless combustion low NO, including venturi mixer 1, blower 2, connection
The entrance of pipe 3 and combustion head 4, the blower 2 is connect with the outlet of venturi mixer 1, the outlet and connecting tube of the blower 2
3 one end connection, the other end of the connecting tube 3 are connect with the fixing end of combustion head 4, and the fire end of combustion head 4 extend into pot
In the burner hearth of furnace；Air mixes in venturi mixer 1 with natural gas, using venturi mixer 1 by air and natural gas
It is mixed according to a certain percentage before entering combustion head 4, keeps combustion of natural gas more abundant, reduce the discharge amount of carbon dioxide,
Premixed gas is formed after natural gas and air pre-mixing, even mixed gas passes through blower 2, and the flabellum of blower 2 stirs premixed gas
It mixes, realizes secondary mixing, keep premixed gas mixing more uniform, premixed gas enters 4 internal combustion of combustion head by connecting tube 3
It burns；
As Figure 7-9, the combustion head 4 includes fixed plate 10, combustion barrel 11, burning web liner 12 and burning web 13,
One end of the combustion barrel 11 is equipped with fixed plate 10, and fixed plate 10 and connecting tube 3 are fixed, and the other end of the combustion barrel 11 is equipped with
The burning web liner 12 extended on the inside of towards combustion barrel 11, the burning web liner 12 are set on one side towards 11 fire end of combustion barrel
There is burning web 13.Burning web 13 is set on burning web liner 12, makes the premixed gas of air and natural gas by burning web 13
When, it can uniformly be passed through from burning web 13, make premixed gas in the surface homogenous combustion of burning web 13, avoid combustion barrel 11
Localized hyperthermia is generated, guarantees the normal operation of burner.
As shown in figure 9, the burning web liner 12 is equipped with several ventholes, the profile of the burning web liner 12 is cone
Shape, the small end of taper is towards the inside of combustion barrel 11, and the big end of taper is towards the outside of combustion barrel 11, the i.e. side of burner hearth.?
Several ventholes are set on burning web liner 12, premixed gas can be made to become more to disperse when through burning web liner 12,
Premixed gas is once dispersed, the uniformity of even mixed gas burning is improved, is designed, made using unique taper combustion head 4
Premixed gas avoids the presence of 11 localized hyperthermia of combustion barrel in its surface homogenous combustion, while improving efficiency of combustion again pole
The discharge of the harmful substances such as carbon monoxide and nitrogen oxides is reduced greatly.
As shown in figure 9, angle formed by the axis of the bus of the burning web liner 12 and burning web liner 12 be 15 °~
35°.The axis of the bus of burning web liner 12 and burning web liner 12 is arranged to 15 °~35 ° of angle, by adjusting angle
Angular range, change the burning extent of flame, make burner to boiler heat it is rapider.In the application, the burning web
Angle formed by the bus of liner 12 and the axis of rotary table is 30 °.Using 30 ° of angle, best combustion efficiency can be reached,
It can guarantee that combustion flame is deep into the distance in the burner hearth of boiler, meet the needs of heating rapidly.
The burning web 13 is metal knitted web.Using metal web, material softness and impact resistance are played steady
The effect for determining flame, can be realized flameless combustion, and combustion head 4 can be made in low-temperature condition, to extend making for combustion head 4 always
With the service life, combustion head 4 carries out flameless combustion in the burner hearth of boiler, makes entire burner hearth full of cold flame, can reduce nitrogen oxygen
The discharge amount of compound and carbon monoxide realizes low nitrogen burning.In the application, the material of the burning web 13 is Aludirome,
Aludirome net has superior heat resistance, antioxygenic property, resistance to SO_2 and anti-carburizing, is capable of the old of retarded combustion head 4
Change, prolong the service life, and have the characteristics that light specific gravity, surface loading are high, resistivity is high and high using temperature, can be improved combustion
The efficiency of combustion of head 4 is burnt, while greatly reducing the discharge of the harmful substances such as carbon monoxide and nitrogen oxides, is reduced to ring
The pollution in border.
The material of the fixed plate 10, combustion barrel 11 and burning web liner 12 is stainless steel.Using in the application, use
Stainless steel model are as follows: 310S, 310S stainless steel can high temperature resistant, heat resisting temperature be higher than 1200 DEG C, be able to extend combustion head 4
Service life.
As shown in Figure 10, the outer wall of the combustion barrel 11 is equipped with igniter 14 and fire towards 12 direction of burning web liner
Flame sensor 15, setting igniter 14 can be realized automatic firing function, and setting flame sensor 15 can be realized to flame
Detection, judges whether to light, avoids the waste of even mixed gas.
As shown in figures 2-6, the connecting tube 3 includes flange 5, inner cylinder 6, outer barrel 7 and baffle 9, the inner cylinder 6
One end is equipped with flange 5, and the other end of the inner cylinder 6 is equipped with baffle 9, and the outer sheath of the inner cylinder 6 is equipped with outer barrel 7, institute
The both ends for stating outer barrel 7 are connect with flange 5 and baffle 9 respectively, and connecting tube 3, Neng Goushi is arranged between blower 2 and combustion head 4
The even transition of existing premixed gas, improves the flow field property of premixed gas flowing.The inner cylinder 6 is to justify towards one end of flange 5
Shape, the inner cylinder 6 are rectangle towards one end of baffle 9,6 one end of inner cylinder of connecting tube 3 are arranged to circle, the other end is set
It is set to rectangle, is connect respectively with blower 2 and combustion head 4, the passability of even mixed gas is improved, specifically, the one of 3 rectangle of connecting tube
End is connect with blower 2, and circular one end is connect with combustion head 4.The outer barrel 7 be equipped with mounting hole 8, the mounting hole 8 to
The side of inner cylinder 6 extends, and extends to the inside of inner cylinder 6, the mounting hole 8 is for installing differential pressure pickup, pressure difference
Sensor monitors the premixed gas pressure inside connecting tube 3, it is ensured that the normal operation of burner.
Above-mentioned technical proposal is a kind of embodiment of the utility model, for those skilled in the art,
On the basis of the utility model discloses application method and principle, it is easy to various types of improvement or deformation are made, without
It is only limitted to method described in the above-mentioned specific embodiment of the utility model, therefore previously described mode is only preferred, and
Not restrictive meaning.
Claims (10)
1. a kind of fully-premixed flameless combustion low NO, which is characterized in that including venturi mixer, blower, connecting tube
And combustion head, the outlet of the entrance and venturi mixer of the blower connect, the outlet of the blower and one end of connecting tube
Connection, the other end of the connecting tube and the fixing end of combustion head connect, and the fire end of combustion head is extend into the burner hearth of boiler；
The combustion head includes fixed plate, combustion barrel, burning web liner and burning web, and one end of the combustion barrel, which is equipped with, to be fixed
Plate, the other end of the combustion barrel are equipped with the burning web liner towards extension on the inside of combustion barrel, the burning web liner direction combustion
The one side for burning cylinder fire end is equipped with burning web.
2. a kind of fully-premixed flameless combustion low NO according to claim 1, which is characterized in that the burning web
Interior lining is equipped with several ventholes, and the profile of the burning web liner is taper.
3. a kind of fully-premixed flameless combustion low NO according to claim 2, which is characterized in that the burning web
Angle formed by the bus of liner and the axis of rotary table is 15 °~35 °.
4. a kind of fully-premixed flameless combustion low NO according to claim 3, which is characterized in that the burning web
Angle formed by the bus of liner and the axis of rotary table is 30 °.
5. a kind of fully-premixed flameless combustion low NO according to claim 1, which is characterized in that the burning web
For metal knitted web.
6. a kind of fully-premixed flameless combustion low NO according to claim 5, which is characterized in that the burning web
Material be Aludirome.
7. a kind of fully-premixed flameless combustion low NO according to claim 1, which is characterized in that the fixation
The material of plate, combustion barrel and burning web liner is stainless steel.
8. a kind of fully-premixed flameless combustion low NO according to claim 1, which is characterized in that the combustion barrel
Outer wall be equipped with towards burning web liner direction igniter and flame sensor.
9. a kind of fully-premixed flameless combustion low NO according to claim 1, which is characterized in that the connecting tube
Including flange, inner cylinder, outer barrel and baffle, one end of the inner cylinder is equipped with flange, and the other end of the inner cylinder is equipped with
The outer sheath of baffle, the inner cylinder is equipped with outer barrel, and the both ends of the outer barrel are connect with flange and baffle respectively.
10. a kind of fully-premixed flameless combustion low NO according to claim 9, which is characterized in that the inner cylinder
Body towards one end of flange be circle, the inner cylinder towards one end of baffle be rectangle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821688451.9U CN209213857U (en) | 2018-10-17 | 2018-10-17 | A kind of fully-premixed flameless combustion low NO |
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| CN201821688451.9U CN209213857U (en) | 2018-10-17 | 2018-10-17 | A kind of fully-premixed flameless combustion low NO |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404903A (en) * | 2018-10-17 | 2019-03-01 | 山东前田热能技术股份有限公司 | A kind of fully-premixed flameless combustion low NO |
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2018
- 2018-10-17 CN CN201821688451.9U patent/CN209213857U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404903A (en) * | 2018-10-17 | 2019-03-01 | 山东前田热能技术股份有限公司 | A kind of fully-premixed flameless combustion low NO |
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