CN208720222U - A kind of full premix surface-type burner gas-air mixing machine - Google Patents
A kind of full premix surface-type burner gas-air mixing machine Download PDFInfo
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- CN208720222U CN208720222U CN201821433888.8U CN201821433888U CN208720222U CN 208720222 U CN208720222 U CN 208720222U CN 201821433888 U CN201821433888 U CN 201821433888U CN 208720222 U CN208720222 U CN 208720222U
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- gas
- air
- swirl vane
- venturi
- chamber
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- 238000002156 mixing Methods 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 62
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 32
- 239000000567 combustion gas Substances 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000002737 fuel gas Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000008246 gaseous mixture Substances 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Gas Burners (AREA)
Abstract
A kind of full premix surface-type burner gas-air mixing machine, belongs to technical field of combustion equipment, and the utility model is difficult to reach gas-air to solve conventional burners and uniformly blend, and burner is easily tempered, and efficiency of combustion is low, and polluted gas discharges the high problem of content.Venturi annular gas chamber is located in gas-air premixer and is coaxially disposed, one end of main combustible pipe is fixed in gas-air premixer by mounting flange, the other end passes through gas-air premixer and is connected with venturi annular gas chamber, interior air duct is equipped in venturi annular gas chamber, outer air duct is equipped between venturi annular gas chamber and gas-air premixer, the both ends of venturi annular gas chamber are respectively equipped with upstream swirl vane and downstream swirl vane, and upstream swirl vane and downstream swirl vane and axial direction are equipped with angle.The full premix surface-type burner gas-air mixing machine of one kind of the utility model can be such that air adequately mixes with combustion gas, and gas-air finally may be implemented by swirl vane and uniformly mix.
Description
Technical field
The utility model relates to a kind of full premix surface-type burner gas-air mixing machines, belong to combustion apparatus technology neck
Domain.
Background technique
The gas-air mixing structure that existing pre-mixing type combustion apapratus uses is mostly all very simple, it is difficult to it is equal to reach gas-air
The effect of even blending, therefore burner is caused easily to be tempered, efficiency of combustion is low, and polluted gas discharges the consequences such as content height.
Three kinds of mixing structure forms are common technique form below, and typical structure is illustrated, as follows:
1. swirl vane/mixed wind wheel type
The patent No.: CN105546533A
The tail end end of fuel gas conduit is successively equipped with more gas guns and multiple swirl vanes；Combustion gas is respectively via gas injection
Combustion gas pore on spray orifice and fuel gas conduit on rifle is even into aditus laryngis；Meanwhile combustion air and the combustion gas are right in aditus laryngis
Punching uniformly mixing, then further promote uniformly to mix under the agitation by combustion gas tube end swirl vane is arranged in, mixing distance contracting
It is short, effectively prevent due to combustion gas mixing unevenness that generate flame temperature uneven, to reduce NOx emission.
Disadvantage: there is mixing dead zone, aditus laryngis inner wall gas/air density component is more uneven more being close to.
2. Venturi tube structure
The patent No.: WO2012007823A1
The downstream of fan is arranged in relative to air-flow (AF) for venturi passage type air/gas mixer.Mixer includes
Local pressure loss device is made of Venturi tube deferent in this case.Air/gas proportion adjustment is mainly passed through
It adjusts jet size (UGL) (UG2), is secondly the adjustment of flow regulator.Be placed on gas valve and venturi passage type air/
The flow regulator in connecting tube between gas mixer allows accurately to adjust supplied gas flow to have for firing
Burn optimum air/gas ratio of the mixed firinor fuel burning in head.
Disadvantage: the characteristic size of runner reduces, and flow velocity changes, and air side pressure is uprushed, and gas/air is caused to have
Apparent pressure difference, fuel gas injection is insufficient, causes gas/air uneven in radially mixing.
3. orifice plate/screen net structure
The patent No.: US6834504B2
Rotational flow generator has axially extending, the chamber of at least approximate rotational symmetry, and burning is preferred by entrance slit
Ground is parallel to longitudinal axis flowing.The tangential orientation of the slit shape entrance more or less as these as a result, combustion air pass through
Strong tangential speed component is gone through, causes to interact with towards burner opening or the axial component of outlet, institute is passed through with vortex
State interior chamber.By in the case cover near combustion air inlet slit and/or via the central supply in burner axis
The device of device optionally or complementally carries out the fuel-rich of fuel.With the mixing portion of the combustion air of fuel in burner
Downstream part in arrange reticular structure.The reticular structure is made of at least one silk screen across flow cross section.
Disadvantage: reticular structure, main function are so that mixed gas is reinforced turbulent flow after reticular structure, and then reinforce mixed
It closes, but arrives reticular structure gap very little, it can the raw larger resistance of convection current movable property.
Utility model content
It is above-mentioned to solve the purpose of the utility model is to provide a kind of full premix surface-type burner gas-air mixing machine
Problem.
A kind of full premix surface-type burner gas-air mixing machine include gas-air premixer, upstream swirl vane,
Downstream swirl vane, venturi annular gas chamber, main combustible pipe, interior air duct, outer air duct and mounting flange；
Venturi annular gas chamber is located in gas-air premixer and is coaxially disposed, and one end of main combustible pipe passes through fixation
Flange is fixed in gas-air premixer, and the other end passes through gas-air premixer and is connected with venturi annular gas chamber,
It is equipped with interior air duct in venturi annular gas chamber, outer air duct is equipped between venturi annular gas chamber and gas-air premixer,
The both ends of venturi annular gas chamber are respectively equipped with upstream swirl vane and downstream swirl vane, upstream swirl vane and downstream rotation
Stream blade is equipped with angle with axial.
Preferred: gas-air premixer is the cylinder of both ends open, and the end face of gas-air premixer one end is equipped with
Premixer's blower flange, the end face of the other end are equipped with flange, are provided with bolt hole on the end face of flange.
Preferred: venturi annular gas chamber includes the first reducer pipe, the second reducer pipe, outer Venturi tube and interior venturi
Pipe；
Inner venturi tube is located in outer Venturi tube, and the left and right ends of inner venturi tube pass through the first reducer pipe and respectively
Two reducer pipes are connected with the left and right ends of outer Venturi tube, have on the tube wall of outer Venturi tube and inner venturi tube outer
Venturi annular chamber gas injection hole and interior venturi annular chamber gas injection hole, outer venturi annular chamber gas injection hole and interior
Venturi annular chamber gas injection hole it is equidistantly uniformly distributed be dislocatedly distributed or ectonexine pipe on density distribution or different pore size distribution,
And opening direction and the central axes of gas-air premixer are perpendicular, the end face of the first reducer pipe and the second reducer pipe small-caliber end
On be equipped with connecting flange, two connecting flanges pass through upstream swirl vane mounting flange and downstream swirl vane fixation respectively
Orchid is connected with upstream swirl vane and downstream swirl vane.The bottom end of outer Venturi tube is equipped with female union, internal screw thread
It is connected to inside pipe fitting one end and venturi annular gas chamber, the other end is threadedly coupled with main combustible pipe.
Preferred: the bottom end of cylinder is equipped with opening, and main combustible pipe is located in opening, and open end is fixed equipped with main combustible pipe
Connector, main combustible pipe anchor tip are connected with mounting flange by the first bolt, are connect on main combustible pipe with main combustible pipe fixation
Head is equipped with positive stop lug boss at relative position, and positive stop lug boss lower end surface is equipped with sealing ring.
Preferred: upstream swirl vane mounting flange and downstream swirl vane mounting flange are respectively equipped with multiple upstream eddy flows
Blade mounting hole and multiple downstream swirl vanes hole, upstream swirl vane and downstream swirl vane are installed by fastening bolt respectively
On stream blade mounting hole and downstream swirl vane hole.
The utility model is had the effect that compared with existing product due to special annular fuel gas cavity configuration, air warp
It crosses after blower is pumped into and enters interior air duct and outer air duct after the swirl vane flow-disturbing of upstream, combustion gas passes through in venturi annular gas chamber
Fuel gas injection sky enter interior air duct and outer air duct, and mix with air, finally sufficiently blended again by downstream swirl vane,
Thus air and combustion gas it is available it is more sufficient mix, air and combustion gas can achieve abundant mix in limited premix distance
It closes, to realize that gas-air uniformly blends, and then improves burning.
Detailed description of the invention
Fig. 1 is a kind of structural representation of full premix surface-type burner gas-air mixing machine described in the utility model
Figure；
Fig. 2 is the installation site structural schematic diagram of swirl vane；
Fig. 3 is the structural schematic diagram of venturi annular gas chamber:
Fig. 4 is the attachment structure schematic diagram of main combustible pipe Yu gas-air premixer.
In figure: 1- gas-air premixer；The upstream 2- swirl vane；The downstream 3- swirl vane；4- venturi annular fuel gas
Chamber；5- main combustible pipe；51- internal layer horizontal tube；52- outer layer horizontal tube；The first reducer pipe of 53-；The second reducer pipe of 54-；Wind in 6-
Road, 7- outer air duct；8- blower；9- mounting flange；The premixer 11- blower flange；12- flange, 13- main combustible pipe anchor tip,
The upstream 21- swirl vane mounting flange, the downstream 31- swirl vane mounting flange, the first reducer pipe of 41-, the second reducer pipe of 42-,
Venturi annular chamber combustion gas in the outer venturi annular chamber gas injection hole of the outer Venturi tube of 43-, 44- inner venturi tube, 45-, 46-
Injection, 47- female union, 410- connecting flange, 51- positive stop lug boss, C1- sealing ring.
Specific embodiment
The utility model preferred embodiment is elaborated below according to attached drawing.
As shown in Figures 1 to 4, a kind of full premix surface-type burner gas-air mixing machine packet described in the utility model
Include gas-air premixer 1, upstream swirl vane 2, downstream swirl vane 3, venturi annular gas chamber 4, main combustible pipe 5, interior
Air duct 6, outer air duct 7 and mounting flange 9；
Venturi annular gas chamber 4 is located in gas-air premixer 1 and is coaxially disposed, and one end of main combustible pipe 5 passes through
Mounting flange 9 is fixed in gas-air premixer 1, and the other end passes through gas-air premixer 1 and venturi annular gas chamber 4
It is connected, interior air duct 6 is equipped in venturi annular gas chamber 4, between venturi annular gas chamber 4 and gas-air premixer 1
Equipped with outer air duct 7, the both ends of venturi annular gas chamber 4 are respectively equipped with upstream swirl vane 2 and downstream swirl vane 3, upstream
Swirl vane 2 and downstream swirl vane 3 and axial direction are equipped with angle.
Further, gas-air premixer 1 is the cylinder of both ends open, set on the end face of 1 one end of gas-air premixer
There is premixer's blower flange 11, the end face of the other end is equipped with flange 12, is provided with bolt hole 121 on the end face of flange 12.
Further, venturi annular gas chamber 4 includes the first reducer pipe 41, the second reducer pipe 42,43 and of outer Venturi tube
Inner venturi tube 44；
Inner venturi tube 44 is located in outer Venturi tube 43, and the left and right ends of inner venturi tube 44 pass through the first variable diameter respectively
Pipe 41 and the second reducer pipe 42 are connected with the left and right ends of outer Venturi tube 43, outer Venturi tube 43 and inner venturi tube 44
Outer venturi annular chamber gas injection hole 45 and interior venturi annular chamber gas injection hole 46, outer venturi are had on tube wall
Annular chamber gas injection hole 45 and interior venturi annular chamber gas injection hole 46 are equidistantly uniformly distributed or are dislocatedly distributed or ectonexine pipe
Upper density distribution or different pore size distribution, and opening direction and the central axes of gas-air premixer 1 are perpendicular, the first reducer pipe
41 and 42 small-caliber end of the second reducer pipe end face on be equipped with connecting flange 410, two connecting flanges 410 pass through upstream respectively
Swirl vane mounting flange 21 and downstream swirl vane mounting flange 31 are connected with upstream swirl vane 2 and downstream swirl vane 3
It connects, the bottom end of outer Venturi tube 43 is equipped with female union 47,47 one end of female union and venturi annular gas chamber 4
Inside connection, the other end are threadedly coupled with main combustible pipe 5.
Further, the bottom end of cylinder is equipped with opening, main combustible pipe 5 is located in opening, and open end is solid equipped with main combustible pipe
Determine connector 13, main combustible pipe anchor tip 13 is connected with mounting flange 9 by the first bolt 9131, on main combustible pipe 5 with master
Positive stop lug boss 51 is equipped at 13 relative position of combustion gas catheter fixation joint, 51 lower end surface of positive stop lug boss is equipped with sealing ring C1.
Further, upstream swirl vane mounting flange 21 and downstream swirl vane mounting flange 31 are respectively equipped with multiple upstreams
Swirl vane mounting hole 211 and multiple downstream swirl vanes hole 311, upstream swirl vane 2 and downstream swirl vane 3 pass through respectively
Fastening bolt is mounted on stream blade mounting hole 211 and downstream swirl vane hole 311.
Working principle:
Full premix surface-type burner mixing machine uses double-cyclone blade, inside and outside venturi passage structure.Blower 8 is novel
Gas-air mixing structure upstream is pumped into air 1F, and outer access 2F and inner gateway 3F, 2F access are formed at the swirl vane of upstream
Interior air enters venturi annular chamber 4, and the air in 3F access is formed via after the swirl vane flow-disturbing of upstream into outer air duct
Rotational flow air 4F；Combustion gas is fed by outer combustion gas pipeline along access 5F, forms circulation path in venturi annular gas chamber 4
6F, a part form combustion gas 8F to outer air duct 7 by the outflow of outer venturi annular chamber gas injection hole 45；Another part is by Nei Wenqiu
In annular chamber gas jet orifice 46 outflow form combustion gas 7F to interior air duct 6.Combustion gas 8F through outer air duct 4 is mixed with rotational flow air 4F,
And reinforce blending by downstream swirl vane 3, form uniform gas-air mixed gas 10F；Combustion gas 7F and 3F through interior air duct 6 are logical
Gaseous mixture 9F is formed after air mixing in road, final interior outer air duct gaseous mixture converges in high efficiency burnt gas air mixing structure downstream
Stream forms homogeneous mixture 11F.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. a kind of full premix surface-type burner gas-air mixing machine, it is characterised in that: including gas-air premixer (1),
Upstream swirl vane (2), downstream swirl vane (3), venturi annular gas chamber (4), main combustible pipe (5), interior air duct (6), outer
Air duct (7) and mounting flange (9)；
The venturi annular gas chamber (4) is located in gas-air premixer (1) and is coaxially disposed, the one of main combustible pipe (5)
End is fixed on gas-air premixer (1) by mounting flange (9), and the other end passes through gas-air premixer (1) and literary mound
In annular fuel gas chamber (4) be connected, be equipped with interior air duct (6) in venturi annular gas chamber (4), venturi annular gas chamber (4)
Outer air duct (7) are equipped between gas-air premixer (1), the both ends of venturi annular gas chamber (4) are respectively equipped with upstream rotation
Stream blade (2) and downstream swirl vane (3), upstream swirl vane (2) and downstream swirl vane (3) are equipped with angle with axial.
2. a kind of full premix surface-type burner gas-air mixing machine according to claim 1, it is characterised in that: described
Gas-air premixer (1) is the cylinder of both ends open, and the end face of gas-air premixer (1) one end is equipped with premixer's blower
The end face of flange (11), the other end is equipped with flange (12), is provided with bolt hole (121) on the end face of flange (12).
3. a kind of full premix surface-type burner gas-air mixing machine according to claim 1, it is characterised in that: described
Venturi annular gas chamber (4) includes the first reducer pipe (41), the second reducer pipe (42), outer Venturi tube (43) and interior venturi
It manages (44)；
The inner venturi tube (44) is located in outer Venturi tube (43), and the left and right ends of inner venturi tube (44) pass through the respectively
One reducer pipe (41) and the second reducer pipe (42) are connected with the left and right ends of outer Venturi tube (43), outer Venturi tube (43) and
Outer venturi annular chamber gas injection hole (45) and the combustion of interior venturi annular chamber are had on the tube wall of inner venturi tube (44)
Gas blowout perforation (46), outer venturi annular chamber gas injection hole (45) and interior venturi annular chamber gas injection hole (46) are equidistant
It is uniformly distributed or be dislocatedly distributed or ectonexine pipe on density distribution or different pore size distribution, and opening direction and gas-air premixer
(1) central axes are perpendicular, are equipped with connection method on the end face of the first reducer pipe (41) and the second reducer pipe (42) small-caliber end
Blue (410), two connecting flanges (410) pass through upstream swirl vane mounting flange (21) and downstream swirl vane fixation respectively
Blue (31) are connected with upstream swirl vane (2) and downstream swirl vane (3), and the bottom end of outer Venturi tube (43) is equipped with internal screw thread
It is connected to inside pipe fitting (47), female union (47) one end and venturi annular gas chamber (4), the other end and main combustible pipe
(5) it is threadedly coupled.
4. a kind of full premix surface-type burner gas-air mixing machine according to claim 2, it is characterised in that: described
The bottom end of cylinder is equipped with opening, and main combustible pipe (5) is located in opening, and open end is equipped with main combustible pipe anchor tip (13), main
Combustion gas catheter fixation joint (13) and mounting flange (9) are connected by the first bolt (9131), on main combustible pipe (5) with main combustion gas
Positive stop lug boss (51) are equipped at catheter fixation joint (13) relative position, positive stop lug boss (51) lower end surface is equipped with sealing ring (C1).
5. a kind of full premix surface-type burner gas-air mixing machine according to claim 3, it is characterised in that: described
Upstream swirl vane mounting flange (21) and downstream swirl vane mounting flange (31) are respectively equipped with multiple upstream swirl vane peaces
Hole (211) and multiple downstream swirl vanes hole (311) are filled, upstream swirl vane (2) and downstream swirl vane (3) are respectively by tight
Fixing bolt is mounted on stream blade mounting hole (211) and downstream swirl vane hole (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433888.8U CN208720222U (en) | 2018-09-03 | 2018-09-03 | A kind of full premix surface-type burner gas-air mixing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433888.8U CN208720222U (en) | 2018-09-03 | 2018-09-03 | A kind of full premix surface-type burner gas-air mixing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208720222U true CN208720222U (en) | 2019-04-09 |
Family
ID=65980748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821433888.8U Withdrawn - After Issue CN208720222U (en) | 2018-09-03 | 2018-09-03 | A kind of full premix surface-type burner gas-air mixing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208720222U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844068A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
| CN112524624A (en) * | 2020-12-17 | 2021-03-19 | 江苏双良低碳产业技术研究院有限公司 | Electrode air mixing device of chimney white elimination system |
-
2018
- 2018-09-03 CN CN201821433888.8U patent/CN208720222U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844068A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
| CN108844068B (en) * | 2018-09-03 | 2024-01-19 | 哈尔滨电气股份有限公司 | Full-premix surface type burner gas-air blender |
| CN112524624A (en) * | 2020-12-17 | 2021-03-19 | 江苏双良低碳产业技术研究院有限公司 | Electrode air mixing device of chimney white elimination system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190409 Effective date of abandoning: 20240119 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190409 Effective date of abandoning: 20240119 |