CN107588421A - A kind of slit-aperture type flame combustion apparatus - Google Patents
A kind of slit-aperture type flame combustion apparatus Download PDFInfo
- Publication number
- CN107588421A CN107588421A CN201710969984.8A CN201710969984A CN107588421A CN 107588421 A CN107588421 A CN 107588421A CN 201710969984 A CN201710969984 A CN 201710969984A CN 107588421 A CN107588421 A CN 107588421A
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- Prior art keywords
- combustor
- fire grate
- slit
- flame tube
- combustion apparatus
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 41
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000005474 detonation Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000000505 pernicious effect Effects 0.000 abstract description 3
- 238000005496 tempering Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000567 combustion gas Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Abstract
A kind of slit-aperture type flame combustion apparatus, including combustor and air supply plant, wherein：The air supply plant includes air blower, the air outlet of the air blower is provided with gas mixer, the sidepiece of the gas mixer is provided with fuel gas inlet, and the outlet side of the gas mixer is connected by flange with equivalent pressure cavity, and the outlet side of the equivalent pressure cavity is connected with combustor；The combustor includes the upper tank and lower header of setting symmetrical above and below, the fire grate being arranged side by side vertically up and down and steady flame tube are provided between the upper tank and lower header, the both sides of fire grate and steady flame tube are communicated with pipe, the fire grate, steady flame tube, the inner hollow of communicating pipe and are connected with upper tank and lower header.This invention ensures that fuel efficiency efficiency and quality；Cooling water in fire grate and steady flame tube can quickly take away heat, effectively reduce flame temperature, reduce the generation of pernicious gas；Flame combustion is stable simultaneously, phenomena such as tempering detonation, blocking will not occur, stop working.
Description
Technical field
The invention belongs to hearth combustion technical field, and in particular to a kind of slit-aperture type flame combustion apparatus.
Background technology
Steam boiler refers to water to be heated to certain temperature and produces the Industrial Boiler of high-temperature steam, in the industrial production
It is widely used；Natural gas typically is used as burning gases in existing steam boiler.
The main component of natural gas is methane, with during air mixed combustion can because flame front temperature is too high and
Nitrogen oxides is produced, causes environmental pollution.According to Jie Lidaoweiqi combustion mechanism, when combustion flame sharp side temperature is higher than 1500
DEG C, begin to generate nitrogen oxides, and flame front temperature often raises 100 DEG C, the aggregate velocity of nitrogen oxides is increased by 6 ~ 7
Times.Therefore control flame front temperature is to control the key factor of NO_x formation.
Have common recognition at present is that the discharge of nitrogen oxides is to form the major reason of atmospheric haze, acid rain, in global range
All in research high combustion efficiency and the low combustion technology of discharged nitrous oxides.Gas fired-boiler is applied more and more common now, but greatly
The burner of more boiler matchings uses diffusion type combustion system, and its major advantage is：Flameholding, technology maturation, but combustion be present
Burn the defects of incomplete, discharged nitrous oxides are high.Therefore, people start research and develop full premix combustion technology, i.e., in advance by air with
Fuel in certain proportion uniformly mixes, and is sent into special burner combustion, and the burner is generally pylindrical, surface wrapped up in one layer it is resistance to
High-temperature metal fiber weaving cloth or ceramic fibre, flame is in its surface combustion.This full premix surface combustion mode is burnt more fully,
The thermal efficiency is high.But Railway Project be present：1st, flame holding is poor, and tempering deflagration phenomenon easily occurs；2nd, because mesh of weaving cotton cloth is fine and closely woven,
Easily block；3rd, in the case where excess air factor is low, discharged nitrous oxides are higher.
The present invention is further studied on this direction.
The content of the invention
Deficiency of the prior art, simple in construction the invention provides a kind of slit-aperture type flame combustion apparatus for more than,
It is easy to use, flame front temperature can be effectively reduced, suppresses the production of nitrogen oxides, and flameholding.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals.
A kind of slit-aperture type flame combustion apparatus, including combustor and air supply plant, wherein：The air supply plant includes air blast
Machine, the air outlet of the air blower are provided with gas mixer, and the sidepiece of the gas mixer is provided with fuel gas inlet, described
The outlet side of gas mixer is connected by flange with equivalent pressure cavity, and the outlet side of the equivalent pressure cavity is connected with combustor；It is described
Combustor includes the upper tank and lower header of setting symmetrical above and below, be provided between the upper tank and lower header up and down it is vertical side by side
The both sides of the fire grate of setting and steady flame tube, fire grate and steady flame tube are communicated with pipe, the fire grate, steady flame tube, the inside of communicating pipe
It is hollow and connected with upper tank and lower header.
In the present invention, air blower is used to convey air or oxygen, and then air and combustion gas is passed through in gas mixer
Turn into the air mixture of special ratios after being sufficiently mixed, air mixture after equivalent pressure cavity in fire grate and steady flame tube region by entering
Row burns, and in combustion process, the cooling water in fire grate and steady flame tube can take away temperature, reduce flame temperature, effectively reduce nitrogen
The generation of oxide.
Preferably, in air supply plant, gas mixer is cylindrical-shaped structure, and flange is square flange, and in flange
With circular air inlet, the diameter of the circular air inlet is identical with the diameter of gas mixer, and the structure makes the mixing of gas
Conveying with combustion gas is more stable.
Preferably, in air supply plant, the equivalent pressure cavity is a cavity progressively expanded, and equivalent pressure cavity is by four pieces of trapezoidal plates
Form, and the outer of upper and lower two pieces of trapezoidal plates is bonded with the face seal of upper tank and lower header, outside the trapezoidal plate of two pieces of left and right
Along the fire grate palette with left and right ends.The structure makes gas pressure gradually be released, and makes the supply of air mixture more
Continually and steadily.
Preferably, in combustor, the communicating pipe is provided with igniter, flame-observing hole, flame detector.
Preferably, in combustor, water inlet is provided with the lower header, delivery port is provided with the upper tank, is used for
Current flow in and out.
Preferably, in combustor, fire grate is made up of the rectangle pipe material being vertically arranged, and shape between adjacent rectangle pipe material
Into gap, the gap is narrow gap, for air mixture by the way that gas pressure after narrow slit reduces, in narrow slit
The ignited burning in exit, prevent from being tempered detonation and blocking.
Preferably, in combustor, steady flame tube is arranged vertically side by side, and steady flame tube is be arranged in parallel with fire grate and steady flame tube is located at
The front of fire grate, the gap position between steady flame tube and rectangle pipe material align, and the structure makes burning gases by the steady of circular tube shaped
After flame tube, negative pressure is formed at the steady flame tube back side, strile-backd new unburned gas again so that Combustion Energy is carried out continuously.
Preferably, in combustor, the fire grate is provided with a row, and the steady flame tube is provided with a row, and steady flame tube and
The space of flame combustion is surrounded between communicating pipe.In the structure, support fixed effect is on the one hand played communicating pipe, on the other hand
Play a part of preventing flame to two side faces radiant heat transfer, logical cooling water inside communicating pipe.
Compared with prior art, the invention has the advantages that：A kind of slit-aperture type flame combustion apparatus is provided, will
Air and gas premixing are burnt again after closing, and ensure that fuel efficiency efficiency and quality；Cooling water in fire grate and steady flame tube can
Heat quickly is taken away, flame temperature is effectively reduced, reduces the generation of pernicious gas；Flame combustion is stable simultaneously, will not occur back
Hot phenomena such as firing, block, be flame-out.
Brief description of the drawings
Fig. 1 is the schematic diagram of the combustor in the present invention.
Fig. 2 is the schematic diagram one of the burner in the present invention.
Fig. 3 is the schematic diagram two of the burner in the present invention.
Fig. 4 is the partial schematic diagram of the burner in the present invention.
Fig. 5 is the partial schematic diagram one of the combustor in the present invention.
Fig. 6 is the enlarged drawing in I region in Fig. 5.
Fig. 7 is the partial schematic diagram two of the combustor in the present invention.
Fig. 8 is the schematic cross-section of the combustor in the present invention.
Fig. 9 is the enlarged drawing in II region in Fig. 8.
Figure 10 is igniter, the schematic diagram of flame-observing hole in combustor.
Figure 11 is the schematic diagram of flame detector.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Referring to figs. 1 to Figure 11, a kind of slit-aperture type flame combustion apparatus being related in of the invention, including combustor and dress of supplying gas
Put, concrete structure therein is as follows.
The air supply plant includes air blower 1, and the air outlet of the air blower 1 is provided with gas mixer 2, the gas
The sidepiece of mixing arrangement 2 is provided with fuel gas inlet 3, and the outlet side of the gas mixer 2 passes through flange 16 and the phase of equivalent pressure cavity 13
Even, the outlet side of the equivalent pressure cavity 13 is connected with combustor.
The combustor includes the upper tank 4 and lower header 5 of setting symmetrical above and below, between the upper tank 4 and lower header 5
Provided with the fire grate 11 and steady flame tube 12 being arranged side by side vertically up and down, the both sides of fire grate 11 and steady flame tube 12 are communicated with pipe 14,15,
The fire grate 11, steady flame tube 12, the inner hollow of communicating pipe 14,15 and connected with upper tank 4 and lower header 5, for from lower and
Upper logical cooling water.
In the air supply plant of present embodiment, gas mixer 2 is cylindrical-shaped structure, and flange 16 is square flange, and
There is circular air inlet 17, the diameter of the circular air inlet 17 is identical with the diameter of gas mixer 2, makes gas in flange 16
Mixing and combustion gas conveying it is more stable.The equivalent pressure cavity 13 is a cavity progressively expanded, and equivalent pressure cavity 13 is by four pieces of ladders
Shape plate is formed, and the outer of upper and lower two pieces of trapezoidal plates is bonded with the face seal of upper tank 4 and lower header 5, and two pieces of left and right is trapezoidal
The outer of plate and the palette of fire grate 11 of left and right ends, the structure make gas pressure gradually be released, make air mixture
Supply is more continual and steady.
In the combustor of present embodiment, the communicating pipe 14,15 is provided with igniter 10, flame-observing hole 9, flame detecting
Device 8, it is respectively used to light a fire, observes flame and detection flame.Water inlet 6 is provided with the lower header 5, is set in the upper tank 4
There is delivery port 7, for flowing in and out for cooling water.
In addition, in the combustor of present embodiment, fire grate 11 is made up of the rectangle pipe material being vertically arranged, and adjacent rectangle
Gap is formed between tubing, the gap is narrow gap, and is evenly distributed, for air mixture by the way that gas is through narrow
Pressure reduces after seam, in the ignited burning in the exit of narrow slit, prevents from being tempered detonation and blocking.In combustor, steady flame tube 12 is simultaneously
The vertical arrangement of row, the front that steady flame tube 12 be arranged in parallel with fire grate 11 and surely flame tube 12 is located at fire grate 11, steady flame tube 12 and rectangle
Gap position alignment between tubing, the structure makes burning gases after the steady flame tube 12 of circular tube shaped, at the steady back side of flame tube 12
Negative pressure is formed, strile-backd new unburned gas again so that Combustion Energy is carried out continuously.The fire grate 11 is provided with a row, institute
State steady flame tube 12 and be provided with a row, and the space of flame combustion is surely surrounded between flame tube 12 and communicating pipe 14,15, in the structure,
Communicating pipe 14,15, one side played the fixed effect of support, on the other hand plays and prevents work of the flame to two side faces radiant heat transfer
With the logical cooling water in the inside of communicating pipe 14,15 is used to reduce flame temperature.
In the present invention, air blower 1 is used to convey air or oxygen, and then air and combustion gas passes through in gas mixer 2
Crossing turns into the air mixture of the ratio pre-set after being sufficiently mixed, air mixture is by equivalent pressure cavity 13 afterwards in the He of fire grate 11
Burnt in the steady region of flame tube 12, in combustion process, the cooling water in fire grate 11 and steady flame tube 12 can take away temperature, reduce
Flame temperature, effectively reduce the generation of nitrogen oxides.During work, steady flame tube 12 makes combustion gas equivalent to the bluff body that gas flows
Body is after pipe, and the back side forms negative pressure, and strile-backd new unburned gas again so that Combustion Energy is carried out continuously.Due to stove
The resistance of narrow slit in row 11, pressure reduces after gas goes out narrow slit so that the pressure ratio equivalent pressure cavity 13 of combustion zone is low, is not likely to produce
Tempering；Premixed combustion gas speed is fast, and in blueness, the length of flame is short, is usually no more than 150mm.
In the present invention, igniter 10 is high-voltage electronic ignition device, and flame-observing hole 9 and flame detector 8 are conventional structure,
Power structure is linked into power network.Compared with prior art, the invention has the advantages that：Air and gas premixing are closed
Burnt again afterwards, ensure that fuel efficiency efficiency and quality；Cooling water in fire grate and steady flame tube can quickly take away heat, effectively
Flame temperature is reduced, reduces the generation of pernicious gas；Flame combustion is stable simultaneously, will not occur to be tempered detonation, blocking, flame-out etc.
Phenomenon.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's
Protection domain.
Claims (8)
- A kind of 1. slit-aperture type flame combustion apparatus, it is characterised in that including combustor and air supply plant, wherein：The air supply plant includes air blower（1）, the air blower（1）Air outlet be provided with gas mixer（2）, the gas Body mixing arrangement（2）Sidepiece be provided with fuel gas inlet（3）, the gas mixer（2）Outlet side pass through flange（16）With Equivalent pressure cavity（13）It is connected, the equivalent pressure cavity（13）Outlet side be connected with combustor；The combustor includes the upper tank of setting symmetrical above and below（4）And lower header（5）, the upper tank（4）And lower header（5） Between be provided with the fire grate that is arranged side by side vertically up and down（11）With steady flame tube（12）, fire grate（11）With steady flame tube（12）Both sides be provided with Communicating pipe（14,15）, the fire grate（11）, steady flame tube（12）, communicating pipe（14,15）Inner hollow and and upper tank（4）With Lower header（5）Connection.
- 2. a kind of slit-aperture type flame combustion apparatus according to claim 1, it is characterised in that in air supply plant, gas mixes Attach together and put（2）For cylindrical-shaped structure, flange（16）For square flange, and flange（16）In there is circular air inlet（17）, the circle Shape air inlet（17）Diameter and gas mixer（2）Diameter it is identical.
- 3. a kind of slit-aperture type flame combustion apparatus according to claim 1, it is characterised in that described etc. in air supply plant Press chamber（13）For a cavity progressively expanded, equivalent pressure cavity（13）It is made up of four pieces of trapezoidal plates, and upper and lower two pieces of trapezoidal plates is outer Edge and upper tank（4）And lower header（5）Face seal fitting, the outer of two pieces of left and right trapezoidal plate and the fire grate of left and right ends （11）Palette.
- A kind of 4. slit-aperture type flame combustion apparatus according to claim 1, it is characterised in that in combustor, the connection Pipe（14,15）It is provided with igniter（10）, flame-observing hole（9）, flame detector（8）.
- A kind of 5. slit-aperture type flame combustion apparatus according to claim 1, it is characterised in that in combustor, the lower water Room（5）In be provided with water inlet（6）, the upper tank（4）In be provided with delivery port（7）.
- A kind of 6. slit-aperture type flame combustion apparatus according to claim 1, it is characterised in that in combustor, fire grate（11） It is made up of the rectangle pipe material being vertically arranged, and gap is formed between adjacent rectangle pipe material.
- A kind of 7. slit-aperture type flame combustion apparatus according to claim 6, it is characterised in that in combustor, steady flame tube （12）Vertical arrangement side by side, steady flame tube（12）With fire grate（11）It is arranged in parallel and steady flame tube（12）Located at fire grate（11）Front, Steady flame tube（12）Gap position between rectangle pipe material aligns.
- A kind of 8. slit-aperture type flame combustion apparatus according to claim 6 or 7, it is characterised in that in combustor, the stove Row（11）It is provided with a row, the steady flame tube（12）It is provided with a row, and steady flame tube（12）And communicating pipe（14,15）Between surround The space of flame combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969984.8A CN107588421A (en) | 2017-10-18 | 2017-10-18 | A kind of slit-aperture type flame combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969984.8A CN107588421A (en) | 2017-10-18 | 2017-10-18 | A kind of slit-aperture type flame combustion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107588421A true CN107588421A (en) | 2018-01-16 |
Family
ID=61053482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710969984.8A Pending CN107588421A (en) | 2017-10-18 | 2017-10-18 | A kind of slit-aperture type flame combustion apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307379A (en) * | 2018-10-11 | 2019-02-05 | 浙江力巨热能设备有限公司 | Ultralow nitrogen lithium bromide absorption refrigerating set |
| CN109442401A (en) * | 2018-09-30 | 2019-03-08 | 江苏双良锅炉有限公司 | A kind of low NO of film-type water-coolingxGas combustion apparatus |
| CN109631021A (en) * | 2019-01-16 | 2019-04-16 | 浙江力巨热能设备有限公司 | A kind of premix staged-combustion method and device |
| CN109654491A (en) * | 2019-01-16 | 2019-04-19 | 浙江力巨热能设备有限公司 | A kind of interior axial water-cooled premixing combustion apparatus |
| CN110068011A (en) * | 2019-05-10 | 2019-07-30 | 无锡顺盟科技有限公司 | A kind of plane cool flame low NO |
| CN110425531A (en) * | 2019-08-21 | 2019-11-08 | 浙江力聚热水机有限公司 | A kind of more combustion front water cooling pre-mixing gas combustion burners and its combustion method |
| CN110425511A (en) * | 2019-08-21 | 2019-11-08 | 浙江力聚热水机有限公司 | Ultralow nitrogen gas-steam boiler |
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| US4373901A (en) * | 1981-01-16 | 1983-02-15 | The Scott & Fetzer Company | Adjustable flame spreader for gun-type power gas burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442401A (en) * | 2018-09-30 | 2019-03-08 | 江苏双良锅炉有限公司 | A kind of low NO of film-type water-coolingxGas combustion apparatus |
| CN109307379A (en) * | 2018-10-11 | 2019-02-05 | 浙江力巨热能设备有限公司 | Ultralow nitrogen lithium bromide absorption refrigerating set |
| CN109631021A (en) * | 2019-01-16 | 2019-04-16 | 浙江力巨热能设备有限公司 | A kind of premix staged-combustion method and device |
| CN109654491A (en) * | 2019-01-16 | 2019-04-19 | 浙江力巨热能设备有限公司 | A kind of interior axial water-cooled premixing combustion apparatus |
| CN110068011A (en) * | 2019-05-10 | 2019-07-30 | 无锡顺盟科技有限公司 | A kind of plane cool flame low NO |
| CN110425531A (en) * | 2019-08-21 | 2019-11-08 | 浙江力聚热水机有限公司 | A kind of more combustion front water cooling pre-mixing gas combustion burners and its combustion method |
| CN110425511A (en) * | 2019-08-21 | 2019-11-08 | 浙江力聚热水机有限公司 | Ultralow nitrogen gas-steam boiler |
| CN110425511B (en) * | 2019-08-21 | 2024-05-28 | 浙江力聚热能装备股份有限公司 | Ultralow nitrogen gas steam boiler |
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