CN109654491A - A kind of interior axial water-cooled premixing combustion apparatus - Google Patents
A kind of interior axial water-cooled premixing combustion apparatus Download PDFInfo
- Publication number
- CN109654491A CN109654491A CN201910040819.3A CN201910040819A CN109654491A CN 109654491 A CN109654491 A CN 109654491A CN 201910040819 A CN201910040819 A CN 201910040819A CN 109654491 A CN109654491 A CN 109654491A
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- chamber
- combustion
- gas
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/84—Flame spreading or otherwise shaping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
本发明涉及一种燃烧装置，特别是一种内轴向水冷预混燃烧装置，包括燃烧室，燃烧室内设有冷却管，冷却管绕燃烧室的轴线排列成圆形，燃烧室包括气体腔、燃烧腔，燃烧室内壁与冷却管之间形成气体腔，冷却管围成的区域形成燃烧腔，混合气体由气体腔流向燃烧腔，混合气体在燃烧腔内燃烧形成环形火焰，火焰沿径向向内，并朝轴心燃烧通过混合气体在燃烧室内形成环形火焰，火焰沿径向向内，并朝轴心燃烧，使得燃烧更加集中，燃料燃烧更加完全，通过火焰径向燃烧，能够缩短火焰的轴向传播长度，因此能够减小燃烧室体积，进一步减小锅炉的整体体积，提高了锅炉的安全性能，简化了锅炉结构。
The invention relates to a combustion device, in particular to an inner axial water-cooled premixed combustion device, comprising a combustion chamber, a cooling pipe is arranged in the combustion chamber, the cooling pipes are arranged in a circle around the axis of the combustion chamber, and the combustion chamber includes a gas cavity, Combustion chamber, a gas chamber is formed between the inner wall of the combustion chamber and the cooling pipe, the area enclosed by the cooling pipe forms a combustion chamber, the mixed gas flows from the gas chamber to the combustion chamber, and the mixed gas burns in the combustion chamber to form an annular flame, and the flame radially The flame burns inwards in the radial direction and burns towards the axis, which makes the combustion more concentrated and the fuel burns more completely. The radial combustion of the flame can shorten the duration of the flame. The axial propagation length can reduce the volume of the combustion chamber, further reduce the overall volume of the boiler, improve the safety performance of the boiler, and simplify the boiler structure.
Description
Technical field
The present invention relates to a kind of burner, especially a kind of interior axial water-cooled premixing combustion apparatus belongs to boiler combustion
Device technical field.
Background technique
Gas heating boiler burns easy to adjust because its energy-saving and environmental protection, automatic degree are high, and heating rate is fast, and the thermal efficiency is high
The advantages that increasingly have been favored by people and be widely applied in heating industry.Since its fuel used is inflammable and explosive combustion
Gas, therefore, the burner of combustion gas play the role of the safe operation of boiler vital.
The air that conventional burners burning needs is conveyed by air blower, is divided into First air and Secondary Air.First air is by combustion
Multiply shape is formed after the preceding bellows of burner, forms mixed gas with the multiply shape combustion gas sprayed from burner compression ring spray orifice.Combustion gas
From spray orifice with the ejection of boiler radial direction, First air is with the ejection of boiler axial direction, two bursts of gas mixing.First air can be with
Strong disturbance combustion gas forces the flow direction of combustion gas to be bent in the axial direction by radial, and mixed gas is by the stable flame pan of burner to burner hearth
Surrounding is uniformly spread.Secondary Air is uniformly spread from diffuser to burner hearth surrounding.
After mixed gas enters boiler furnace, being sprayed along the axial direction of burner hearth, combustion flame burns along the axial direction of burner hearth,
Combustion flame diameter is big, and combustion flame length is long.And conventional boiler requires furnace diameter to be greater than flame diameter, burner hearth length is greater than
The length of flame.Therefore it is directed to the structure of conventional burners, needs to configure large scale burner hearth, structure is complicated, higher cost, and pot
The security performance of furnace reduces.In addition, the mixed gas of conventional burners injection is longer due to combustion flame, it is easy to generate endless
Full burning, generates more CO and NOx, be unfavorable for boiler oil makes full use of and be difficult to reach the low-nitrogen discharged mark of boiler
It is quasi-.
Summary of the invention
It is larger the purpose of the present invention is to solve boiler furnace volume in the prior art and fuel is because cannot sufficiently fire
It burns and leads to the problem of more NOx, a kind of interior axial water-cooled premixing combustion apparatus is provided.
To realize the above-mentioned technical purpose, the invention adopts the following technical scheme:
A kind of interior axial water-cooled premixing combustion apparatus, including combustion chamber are equipped with cooling tube in combustion chamber, and cooling tube is around burning
The axis of room is arranged in circle, and combustion chamber includes air chamber, combustion chamber, and air chamber is formed between Inner Wall of Combustion Chamber and cooling tube,
The region that cooling tube surrounds forms combustion chamber, and mixed gas flows to combustion chamber by air chamber, and mixed gas is burnt in combustion chamber
Annular flame is formed, flame radially inward, and burns towards axle center.
Further, Propagation of the flue gas in combustion chamber along combustion chamber, smoke spread direction and flame combustion direction
Vertically.
Further, combustion chamber one end is equipped with the first collecting chamber, and the other end is equipped with the second collecting chamber.
Further, cooling tube one end is located at the first collecting chamber, the other end is located at the second collecting chamber.
Further, the first collecting chamber is equipped with cooling water inlet, and the second collecting chamber is equipped with mouth at cooling water.
Further, hollow and/or the second collecting chamber the hollow formation exhanst gas outlet in middle part in the middle part of the first collecting chamber.
Further, sidewall of combustion chamber is equipped with one or more gas feeds, and multiple gas feeds are located at approximately the same plane,
And it is uniformly distributed in sidewall of combustion chamber.
Further, mixed gas is premixed gas, and combustion gas mixes with air into required ratio after matching and is passed through gas feed.
Further, steady flame tube is additionally provided in combustion chamber, axis of the steady flame tube around combustion chamber is arranged in circle, steady flame tube one
End is located at the first collecting chamber, the other end is located at the second collecting chamber.
Further, the trapezoidal body shape of the shape of cooling tube, the upper bottom surface and bottom surface of prismatoid form circular arc body；Steady flame
The shape of pipe is cylindrical.
Further, the first gap is formed between cooling tube, and the second gap, steady flame tube center and phase are formed between steady flame tube
Adjacent first gap alignment setting.
Compared with the prior art, the invention has the following advantages:
One, annular flame is formed by mixed gas in the combustion chamber, flame radially inward, and burns towards axle center, makes
It must burn and more concentrate, fuel combustion is more complete；
Two, by flame radial combustion, can contract short flamed Propagation length, therefore can reduce combustion chamber
Product, further decreases the overall volume of boiler, improves the security performance of boiler, simplify boiler structure；
Three, the required premixed gas matched is formed by mixing with air combustion gas, thermal NO x can be effectively reduced, together
When combustion flame it is short, flameholding, heat transfer efficiency is high；
Four, by the way that cooling tube is arranged in the combustion chamber, the combustion flame for generating premixed gas is first and in cooling tube
Cooling medium carries out heat exchange, reduces the temperature of combustion flame, inhibits the generation of NOx.
Detailed description of the invention
Fig. 1 is the facade internal structure chart of axial water-cooled premixing combustion apparatus in the embodiment of the present invention；
Fig. 2 is the internal plane structure chart of axial water-cooled premixing combustion apparatus in the embodiment of the present invention；
Fig. 3 is axial water-cooled premixing combustion apparatus structure chart in the embodiment of the present invention；
Fig. 4 is axial water-cooled premixing combustion apparatus side view in the embodiment of the present invention；
Fig. 5 is axial water-cooled premixing combustion apparatus front view in the embodiment of the present invention；
Fig. 6 is axial water-cooled premixing combustion apparatus top view in the embodiment of the present invention.
In figure: the combustion chamber 1-, 11- air chamber, 12- combustion chamber, 2- cooling tube, the first collecting chamber of 3-, the second collecting chamber of 4-,
5- cooling water inlet, 6- cooling water outlet, 7- exhanst gas outlet, 8- gas feed, the steady flame tube of 9-.
Specific embodiment
Below by specific embodiment the technical scheme of the present invention will be further described explanation.
Such as Fig. 1-6, the present embodiment provides a kind of interior axial water-cooled premixing combustion apparatus, including combustion chamber 1, in combustion chamber 1
Equipped with cooling tube 2, axis of the cooling tube 2 around combustion chamber 1 is arranged in circle.Combustion chamber 1 includes air chamber 11, combustion chamber 12.Combustion
It burns and forms air chamber 11 between 1 inner wall of room and cooling tube 2, the region that cooling tube 2 surrounds forms combustion chamber 12, and mixed gas is by gas
Body cavity 11 flows to combustion chamber 12.Mixed gas is burnt in combustion chamber 12 forms annular flame, flame radially inward, and towards axis
Heart burning.
Cooling water is full of in cooling tube 2, mixed gas is burnt outside cooling tube 2, burned flame with it is cold in cooling tube 2
But water carries out heat exchange, reduces the temperature of combustion flame, and then inhibit the generation of NOx.Axis of the cooling tube 2 around combustion chamber 1
It being arranged in circle, cooling tube 2 divides entire combustion chamber 1 for air chamber 11 and combustion chamber 12, it is preferable that combustion chamber 1 is cylindrical,
Air chamber 11 is annular shape.When combustion-gas flow is flowed out from the gap between cooling tube 2, it is capable of forming circle-shaped burning fire
Flame.The burning direction of flame is as the flow direction of mixed airflow, radially inward, and towards the axle center of combustion chamber 1, protects
Card burning is concentrated, and keeps fuel combustion more complete.Annular flame concentrated combustion radially inward reduces flame in axial propagation
Length, therefore 1 volume of combustion chamber can be reduced.The burner of the present embodiment is applied on boiler, boiler can be reduced
Overall volume improves boiler safety performance, simplifies conventional boiler structure.
The flue gas that mixed gas generates is flowed out from the upper end of combustion chamber 12 and/or lower end, or from the side of combustion chamber 1
Surface current goes out.Preferably, flue gas along combustion chamber 1 Propagation, it is vertical with flame combustion direction, and from 12 upper end of combustion chamber flow
Out.High-temperature flue gas is used to the hot water in heating boiler after flowing out from combustion chamber 1.
1 one end of combustion chamber is equipped with the first collecting chamber 3, and the other end is equipped with the second collecting chamber 4, the first collecting chamber 3 and the second collection
Filled with cooling water in water chamber 4.Preferably, the first collecting chamber 3 and the second collecting chamber 4 are annular.2 one end of cooling tube is located at the first collection
Water chamber 3, the other end are located at the second collecting chamber 4, are full of cooling water in cooling tube 2.First collecting chamber 3 is equipped with cooling water inlet 5, the
Two collecting chambers 4 are equipped with mouth 6 at cooling water.Under the drive for the water circulating pump being arranged outside combustion chamber 1, the water in cooling tube 2 is always
In flow regime, the cooling water of flowing takes away the heat of the outer flame of cooling tube 2 in time, reduces the ignition temperature of flame.It is preferred that
Ground, the 3 hollow formation exhanst gas outlet 7 in hollow and/or the second collecting chamber 4 the middle part in middle part of the first collecting chamber.The position of exhanst gas outlet 7
Also the side in combustion chamber 1 can be set, specific location selects according to the actual situation.
1 side wall of combustion chamber is equipped with one or more gas feeds 8, and mixed gas is entered in combustion chamber 1 by gas feed 8
Air chamber 11 in.Preferably, gas feed 8 is set as multiple.Multiple gas feeds 8 need to be located at approximately the same plane, and uniformly
It is distributed in 1 side wall of combustion chamber, guarantees that mixed gas is evenly distributed in air chamber 11, while guaranteeing mixed gas in combustion chamber 12
The integrality of interior burning temporal consistency and combustion flame.
Mixed gas is premixed gas in the present embodiment, and combustion gas mixes with air into required ratio after matching and is passed through gas feed 8,
Thermal NO x can be effectively reduced in premixed combustion gas, while the combustion flame of premixed gas is short, flameholding, and heat transfer efficiency is high.
In addition to this, NOXGeneration and flame temperature has much relations when premixed combustion gas, pass through and cooling be set in combustion chamber 1
Pipe 2, premixed gas burn in 2 outer surface of cooling tube, and water is fully cooled in cooling tube 2, and combustion flame and cooling water carry out heat
Exchange reduces the flame temperature of premixed combustion gas, and then inhibits the generation of NOx.Steady flame tube 9 is additionally provided in combustion chamber 12, surely
Axis of the flame tube 9 around combustion chamber 1 is arranged in circle.Steady 9 one end of flame tube is located at the first collecting chamber 3, the other end is located at second and catchments
Room 4, when flame enters steady 9 outer surface of flame tube, the cooling water in flame and steady flame tube 9 exchanges heat, and further decreases the burning of flame
Temperature.
The gap of certain length is formed between cooling tube 2.Preferably, the trapezoidal body shape of the shape of cooling tube 2, prismatoid
Upper bottom surface and bottom surface form circular arc body, and the arc length length of upper bottom surface circular arc body is less than the arc length length of bottom surface circular arc body, on
Bottom surface circular arc body is closer from 1 center of combustion chamber, guarantees that the gap between cooling tube 2 is wide.Preferably, the shape of steady flame tube 9 is in
It is cylindric.The gap formed between cooling tube 2 is the first gap, forms the second gap between steady flame tube 9, it is preferable that the first seam
Gap is aligned setting with steady 9 center of flame tube with adjacent first gap.
The pressure that burning gases are formed when flowing out from the first gap is P1, and gas is after the outflow of the first gap by steady flame tube 9
Stop, is diverted in the second gap of steady 9 two sides of flame tube.After the outflow of the second gap, the pressure of formation is P2, and P2 is less than P1,
The side of i.e. steady 9 air-flow of flame tube outflow forms negative pressure, and can strile-back unburned gas again.Therefore the steady flame tube 9 in combustor 1
Have the function of stablizing burning.Burning gases are by forming whole flame behind the first gap and the second gap.
The embodiments of the present invention have been described in detail above, for those of ordinary skill in the art, according to this
The thought provided is provided, will change in specific embodiment, and these changes also should be regarded as protection model of the invention
It encloses.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040819.3A CN109654491A (en) | 2019-01-16 | 2019-01-16 | A kind of interior axial water-cooled premixing combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040819.3A CN109654491A (en) | 2019-01-16 | 2019-01-16 | A kind of interior axial water-cooled premixing combustion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109654491A true CN109654491A (en) | 2019-04-19 |
Family
ID=66118931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910040819.3A Pending CN109654491A (en) | 2019-01-16 | 2019-01-16 | A kind of interior axial water-cooled premixing combustion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109654491A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094800A (en) * | 2019-05-31 | 2019-08-06 | 嘉兴怀莲贸易有限公司 | A kind of earth source heat pump central-heating system |
| CN111121022A (en) * | 2019-12-31 | 2020-05-08 | 西安交通大学 | A low nitrogen gas burner based on heat pipe heat exchange |
| WO2021031435A1 (en) * | 2019-08-21 | 2021-02-25 | 浙江力聚热水机有限公司 | Ultra-low nitrogen gas steam boiler |
| CN113606579A (en) * | 2021-08-31 | 2021-11-05 | 中冶京诚工程技术有限公司 | Water-cooled direct-fired heating device and flue gas denitration system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054409A (en) * | 1975-05-15 | 1977-10-18 | Nippon Kokan Kabushiki Kaisha | Swirling burners for use in hot blast stoves |
| JPH10132202A (en) * | 1996-10-24 | 1998-05-22 | Ebara Boiler Kk | Once-through boiler |
| CN1272605A (en) * | 1999-04-30 | 2000-11-08 | 三浦工业株式会社 | Watertube boiler |
| US20150050605A1 (en) * | 2013-08-13 | 2015-02-19 | Haul-All Equipment Ltd. | LOW NOx BURNER |
| CN206514298U (en) * | 2017-01-05 | 2017-09-22 | 南京翔龙厨房设备有限公司 | A kind of energy-saving burner |
| CN107477579A (en) * | 2016-06-08 | 2017-12-15 | 株式会社水国 | Low nitrogen oxide burner |
| CN107588421A (en) * | 2017-10-18 | 2018-01-16 | 力聚热力设备科技有限公司 | A kind of slit-aperture type flame combustion apparatus |
| CN209801477U (en) * | 2019-01-16 | 2019-12-17 | 浙江力巨热能设备有限公司 | Inner axial water-cooling premixing combustion device |
-
2019
- 2019-01-16 CN CN201910040819.3A patent/CN109654491A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054409A (en) * | 1975-05-15 | 1977-10-18 | Nippon Kokan Kabushiki Kaisha | Swirling burners for use in hot blast stoves |
| JPH10132202A (en) * | 1996-10-24 | 1998-05-22 | Ebara Boiler Kk | Once-through boiler |
| CN1272605A (en) * | 1999-04-30 | 2000-11-08 | 三浦工业株式会社 | Watertube boiler |
| US20150050605A1 (en) * | 2013-08-13 | 2015-02-19 | Haul-All Equipment Ltd. | LOW NOx BURNER |
| CN107477579A (en) * | 2016-06-08 | 2017-12-15 | 株式会社水国 | Low nitrogen oxide burner |
| CN206514298U (en) * | 2017-01-05 | 2017-09-22 | 南京翔龙厨房设备有限公司 | A kind of energy-saving burner |
| CN107588421A (en) * | 2017-10-18 | 2018-01-16 | 力聚热力设备科技有限公司 | A kind of slit-aperture type flame combustion apparatus |
| CN209801477U (en) * | 2019-01-16 | 2019-12-17 | 浙江力巨热能设备有限公司 | Inner axial water-cooling premixing combustion device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094800A (en) * | 2019-05-31 | 2019-08-06 | 嘉兴怀莲贸易有限公司 | A kind of earth source heat pump central-heating system |
| WO2021031435A1 (en) * | 2019-08-21 | 2021-02-25 | 浙江力聚热水机有限公司 | Ultra-low nitrogen gas steam boiler |
| CN111121022A (en) * | 2019-12-31 | 2020-05-08 | 西安交通大学 | A low nitrogen gas burner based on heat pipe heat exchange |
| CN111121022B (en) * | 2019-12-31 | 2021-08-24 | 西安交通大学 | A low nitrogen gas burner based on heat pipe heat exchange |
| CN113606579A (en) * | 2021-08-31 | 2021-11-05 | 中冶京诚工程技术有限公司 | Water-cooled direct-fired heating device and flue gas denitration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204063038U (en) | Low NO xflue gas is from return flow burner | |
| CN109654491A (en) | A kind of interior axial water-cooled premixing combustion apparatus | |
| CN101725969B (en) | A Low NOx Pulverized Coal Burner | |
| CN107420892A (en) | A kind of outer circulation smoke backflow formula all-premixing burner | |
| KR20110053310A (en) | Low Knox Burner | |
| CN105333449A (en) | Low-carbon type flue gas backflow type steam boiler low-oxygen combustion system | |
| CN107036128A (en) | A kind of gas-turbine combustion chamber | |
| CN207648852U (en) | A kind of combustion chamber and gas turbine | |
| CN207006235U (en) | A kind of pre-mixing apparatus of gas turbine and combustion chamber | |
| CN209801477U (en) | Inner axial water-cooling premixing combustion device | |
| CN201606876U (en) | Low-NOx coal burner | |
| CN209458925U (en) | Full premix combustion device and boiler is premixed entirely | |
| CN210717525U (en) | Venturi combustion nozzle for combusting biomass powder fuel | |
| CN206669731U (en) | A kind of premixed high-speed jet burner | |
| CN109780537B (en) | Full premix burner and full premix boiler | |
| CN209484591U (en) | Water cooling premixing combustion apparatus | |
| JP4309771B2 (en) | Multi-pipe once-through boiler | |
| CN206861595U (en) | A kind of gas-turbine combustion chamber | |
| CN109268827B (en) | A low calorific value gas burner and hot air furnace | |
| CN111089290A (en) | Novel internal circulation low-nitrogen gas burner device | |
| CN109442402A (en) | A kind of water cooling premixed combustion method and device | |
| CN109631021A (en) | Method and device for premixed staged combustion | |
| CN204084368U (en) | Low-heat value gas radiant tube burner | |
| JP2002139217A (en) | Premixing heat storage alternating combustion apparatus | |
| CN100439798C (en) | A gas premixed high-speed burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |