CN109928611B - Burner and optical fiber preform processing device with same - Google Patents
Burner and optical fiber preform processing device with same Download PDFInfo
- Publication number
- CN109928611B CN109928611B CN201711368663.9A CN201711368663A CN109928611B CN 109928611 B CN109928611 B CN 109928611B CN 201711368663 A CN201711368663 A CN 201711368663A CN 109928611 B CN109928611 B CN 109928611B
- Authority
- CN
- China
- Prior art keywords
- burner
- outlet pipes
- oxygen
- pipeline
- premixing cavity
- 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.)
- Active
Links
Landscapes
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The present invention provides a burner comprising: the device comprises a premixing cavity, a gas pipeline, a premixing oxygen pipeline, a burner port, an air outlet pipe and a surface oxygen mixing pipeline. The invention also provides a processing device for the optical fiber preform, which comprises the burner. The burner greatly increases the flow rate of premixed oxygen through the narrow premixing cavity, drives fuel to form flame with high flow rate and high heat concentration, and eliminates the influence of large outlet cross section area of the burner and low fuel flow rate and low pressure on the heat concentration of the flame; in addition, the burner is not limited by the sectional area of the burner port, and the inner diameter and the outer diameter and the arrangement number of the air outlet pipes can be adjusted to be respectively beneficial to different flame processing operations such as stretching, polishing, butting and the like of the optical fiber preform.
Description
Technical Field
The invention relates to the field of combustion devices, in particular to a premixed burner and an optical fiber preform processing device with the burner.
Background
In the processing process of the optical fiber preform, the stretching, polishing and butt joint operation of the core rod are required to be performed by flame heating; the optical fiber preform also needs to be subjected to a butt joint operation by flame heating. The optical fiber perform gradually moves towards the trend of large-size, because the heat value of hydrogen is relatively low, the flame temperature of the surface mixed structure is low, and the traditional oxyhydrogen flame surface mixed structure burner has the defects of low heating efficiency, long time consumption, large fuel consumption and the like in the actual processing process of large-size perform and core rods, even under the condition of large-flow and long-time heating, the problems of insufficient softening and butt joint of the optical fiber perform and the core rods, incapability of stretching and the like can be caused.
The fuel flow interval required by the optical fiber perform and the core rod flame processing is fixed, and the cross section of the end surface of the surface mixed burner is also required to be fixed so as to form flame with high flow rate and concentrated heat; in the flame machining operation process of the optical fiber preform, the core rod and the like, the sectional area of the burner is larger, the flame is wider, the polishing uniformity of the core rod and the sufficiency of the core rod butt joint are facilitated, the sectional area of the burner is smaller, and the flame is narrower, so that the stretching process of the core rod and the control of the fluctuation of the diameter of the core rod are facilitated. Thus, the conventional surface mixing burner has the following disadvantages: (1) The traditional surface mixing burner is mainly suitable for hydrogen, and the hydrogen has the defect of low heat value compared with other fuels, the heating process needs high flow and long-time preheating, and the production efficiency is relatively low; (2) The traditional surface mixing structure has insufficient exertion of the heat value of the fuel, low flame temperature, incapability of completely releasing the heat value of the fuel and low heating efficiency and sufficiency; (3) The traditional surface mixing burner has a relatively fixed end surface sectional area, and the burner with the same structure is not suitable for various processing operations of optical fiber preforms and core rods.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a burner with a high flame temperature and a concentrated heat.
The present invention provides a burner comprising:
the gas-oxygen mixing device comprises a premixing cavity, wherein gas and oxygen are mixed in the premixing cavity to form mixed gas;
the gas pipeline is connected with the premixing cavity, and gas enters the premixing cavity through the gas pipeline;
the premixed oxygen pipeline is connected with the premixed cavity, and oxygen enters the premixed cavity through the premixed oxygen pipeline;
the burner port is a mixed gas outlet end face;
the air outlet pipes are connected with the premixing cavity and used for guiding out the mixed air of the premixing cavity to the burner port;
the surface oxygen mixing pipeline is used for enabling oxygen to enter a gap between the air outlet pipes through the surface oxygen mixing pipeline so as to reach the burner port, and the aggregation and dispersion condition of the burner flame can be controlled by adjusting the flow ratio of the premixed oxygen to the surface oxygen mixing pipeline.
Preferably, the premixing cavity is of a single-channel slender pipeline structure, the inner diameter of the premixing cavity is 3-5 mm, and the length of the premixing cavity is 14-16 mm.
Preferably, the inner diameter of the premixed oxygen pipe is smaller than the inner diameter of the premixing cavity.
Preferably, the number of the air outlet pipes ranges from 81 to 225, the air outlet pipes are arranged in a square structure at the burner port, and the number of the air outlet pipes arranged on each side of the square ranges from 9 to 15.
Preferably, the air outlet pipes incline from one end connected with the premixing cavity to the center of the burner port, the inclination angle of the air outlet pipes is between 6 and 15 degrees, the inner diameter range is between 0.8 and 1.2mm, and the outer diameter range is between 2.3 and 2.5mm.
Preferably, the inner diameter range of the plurality of air outlet pipes is 0.8-1 mm, the outer diameter range is 2.3-2.4 mm, the number range of the plurality of air outlet pipes is 81-169, the plurality of air outlet pipes are arranged in a square structure at the port of the burner, and the number range of the plurality of air outlet pipes arranged on each side of the square is 9-13, so that the flame width of the burner is small and the heating area is concentrated.
Preferably, the inner diameter range of the plurality of air outlet pipes is 1-1.2 mm, the outer diameter range is 2.4-2.5 mm, the number range of the plurality of air outlet pipes is 169-225, the plurality of air outlet pipes are arranged in a square structure at the port of the burner, and the number range of the plurality of air outlet pipes arranged at each side of the square is 13-15, so that the flame width and the heating area of the burner are enlarged.
Preferably, the burner further comprises a cooling water path, wherein the cooling water path is arranged on one side of the burner port and is used for conducting circulating cooling water to reduce the temperature of the burner port.
The invention also provides an optical fiber preform processing device, which comprises the burner.
Compared with the prior art, the burner provided by the invention has the advantages that the flow rate of premixed oxygen is greatly increased through the narrow premixing cavity, the fuel is driven to form flame with high flow rate and high heat concentration, and the influence of large cross section area of the outlet of the burner and low pressure of fuel flow on the heat concentration of the flame is eliminated; in addition, the burner is not limited by the sectional area of the burner port, and the inner diameter and the outer diameter and the arrangement number of the air outlet pipes can be adjusted to be respectively beneficial to different flame processing operations such as stretching, polishing, butting and the like of the optical fiber preform.
Drawings
Fig. 1 is a schematic structural view of a burner according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a burner port according to an embodiment of the present invention.
Description of main reference numerals:
| optical fiber preform processing device | 1000 |
| Burner with a burner body | 100 |
| Premixing cavity | 1 |
| Gas pipeline | 2 |
| First gas pipeline | 21 |
| Second gas pipeline | 22 |
| Premixing oxygen pipeline | 3 |
| Burner port | 4 |
| Air outlet pipe | 5 |
| Surface oxygen mixing pipeline | 6 |
| Cooling waterway | 7 |
Detailed Description
The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
In the present invention, when one component is considered to be "connected" or "connected" to another component, it may be fastened or detachably connected, and one component may be directly connected to another component or indirectly connected to another component through an intervening component.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a burner 100, where the burner 100 includes 7 main components, namely a premixing chamber 1, a gas pipeline 2, a premixed oxygen pipeline 3, a burner port 4, an air outlet pipe 5, a surface mixed oxygen pipeline 6 and a cooling water channel 7.
Premix chamber 1: the gas and the oxygen are mixed in the premixing cavity 1 to form a mixed gas, the premixing cavity 1 is of a single-channel slender pipeline structure, the inner diameter of the premixing cavity 1 is 3-5 mm, and the length of the premixing cavity 1 is 14-16 mm;
gas pipeline 2: the gas pipeline 2 comprises a first gas pipeline 21 and a second gas pipeline 22, the gas pipeline 2 is arranged on the side edge of the premixing cavity 1, the first gas pipeline 21 is communicated with the premixing cavity 1 through the second gas pipeline 22, the inner diameter of the first gas pipeline 21 is larger than that of the second gas pipeline 22, gas enters the second gas pipeline 22 through the first gas pipeline 21, the gas uniformly enters the premixing cavity 1 after stabilizing the flow in the second gas pipeline 22, and after being uniformly mixed with premixed oxygen in the premixing cavity 1, the gas is driven by the premixed oxygen with high flow rate and flows out of the burner port 4 at high speed to be ignited;
premix oxygen line 3: the premixed oxygen pipeline 3 is connected with the premixing cavity 1, oxygen directly enters the premixing cavity 1 through the front surface of the premixed oxygen pipeline 3, and after being mixed with fuel in the premixing cavity 1, the premixed oxygen pipeline drives the fuel to flow out of the burner port 4 at a high speed, so that a strong flame with concentrated heat and high temperature is formed.
When entering the premixing cavity 1, the premixed oxygen pipeline 3 has smaller pipeline inner diameter, increases oxygen flow rate and pressure, and is mixed with the gas introduced from the second gas pipeline 22 and enters the premixing cavity 1; the slender structural characteristic of the premixing cavity 1 increases the pressure and flow of the mixed gas to form strong flame with concentrated heat, and the structure increases the pressure of the mixed gas, well prevents the flame from entering the combustor 100 and reduces the possibility of tempering;
burner port 4: referring to fig. 2, the burner port 4 is a mixed gas outlet end face, and the nozzles of a plurality of air outlet pipes 5 on the burner port 4 are orderly arranged into a square structure.
And an air outlet pipe 5: an outlet pipe 5 is connected with the premixing chamber 1, and the outlet pipe 5 extends from one end connected with the premixing chamber 1 to the burner port 4. After premixing the fuel gas and the oxygen, the fuel gas passes through the premixing cavity 1 from the inside of the air outlet pipe 5 to the burner port. The inner diameter of the air outlet pipe 5 is between 0.8 and 1.2mm so as to ensure the flame intensity, the outer diameter of the air outlet pipe 5 is between 2.3 and 2.5mm, and the flame width can be controlled; the air outlet pipes 5 adopt a flame focusing mode that two sides incline towards the center, the inclination angle of the air pipe at the outermost side is between 6 and 15 degrees, the number of the air outlet pipes 5 is between 81 and 225, the air outlet pipes are arranged into a square structure at the port of the burner, and the arrangement number range of the air outlet pipes on each side of the square is between 9 and 15.
When the inner diameter range of the air outlet pipe 5 is 0.8-1 mm, the outer diameter range is 2.3-2.4 mm, the number range of the air outlet pipes is 81-169, the air outlet pipes are arranged into a square structure at the port of the burner, the number range of the air outlet pipes arranged at each side of the square is 9-13, the flame width of the burner 100 is small, the heating area is concentrated, the control on the fluctuation of the diameter of the optical fiber preform rod can be better, and the stretching operation of the optical fiber preform rod and the core rod is facilitated.
When the inner diameter range of the air outlet pipe 5 is 1-1.2 mm, the outer diameter range is 2.4-2.5 mm, the number range of the air outlet pipes is 169-225, the air outlet pipes are arranged into a square structure at the port of the burner, the number range of the air outlet pipes arranged at each side of the square is 13-15, and the flame width and the heating area of the burner 100 are enlarged, so that polishing and butt joint operation of the optical fiber preform and the core rod are facilitated.
Surface oxygen mixing pipeline 6: oxygen enters the gap between the air outlet pipes 5 through the surface oxygen mixing pipe 6 to reach the burner port 4, and the mixing and scattering condition of flames of the burner 100 can be effectively controlled and the sufficiency of gas combustion can be improved by adjusting the flow ratio of premixed oxygen and surface oxygen mixing.
Cooling water path: the head of the burner 100 is in a high-temperature state for a long time, so that loss is easy to cause, a cooling water path is arranged on one side of the burner port 4, the temperature of the head of the burner 100 is reduced through cooling water circulation, the service life of the burner can be effectively prolonged, the water flow requirement is low, and the cooling effect can be achieved by 5-15L/min.
The present embodiment further provides an optical fiber preform processing apparatus 1000 (not shown), including the burner 100, where the burner 100 is used for stretching, polishing, and butt-joint flame processing operations of an optical fiber preform, and it is understood that the optical fiber preform processing apparatus 1000 further includes processing modules of other optical fiber preforms, such as a machine tool and a motor.
Compared with the prior art, the burner provided by the embodiment greatly increases the flow rate of premixed oxygen through the narrow premixing cavity, drives fuel to form flame with high flow rate and high heat concentration, and eliminates the influence of large outlet cross section area of the burner and low fuel flow rate and low pressure on flame heat concentration; in addition, the burner is not limited by the sectional area of the burner port, and the inner diameter and the outer diameter and the arrangement number of the air outlet pipes can be adjusted to be respectively beneficial to different flame processing operations such as stretching, polishing, butting and the like of the optical fiber preform. Specifically, by reducing the inner diameter and the outer diameter of the air pipe and the arrangement quantity, the stretching operation of the optical fiber preform and the core rod is facilitated; polishing and butt-jointing the optical fiber preform and the core rod are carried out.
The above embodiments are only intended to explain the claims. The scope of the invention is not limited by the description. Any changes or substitutions that would be readily apparent to one skilled in the art within the scope of the present disclosure are intended to be included within the scope of the present invention.
Claims (7)
1. A burner, the burner comprising:
the gas-oxygen mixing device comprises a premixing cavity, wherein gas and oxygen are mixed in the premixing cavity to form mixed gas;
the gas pipeline is connected with the premixing cavity, and gas enters the premixing cavity through the gas pipeline;
the premixed oxygen pipeline is connected with the premixed cavity, and oxygen enters the premixed cavity through the premixed oxygen pipeline;
the burner port is a mixed gas outlet end face;
the air outlet pipes are connected with the premixing cavity and used for guiding out the mixed air of the premixing cavity to the burner port;
the surface mixed oxygen pipeline is used for enabling oxygen to enter a gap between the air outlet pipes through the surface mixed oxygen pipeline so as to reach the burner port, and the aggregation and dispersion condition of the burner flame can be controlled by adjusting the flow ratio of the premixed oxygen to the surface mixed oxygen; the premixing cavity is of a single-channel slender pipeline structure, the inner diameter of the premixing cavity is 3-5 mm, and the length of the premixing cavity is 14-16 mm; the inner diameter of the premixed oxygen pipeline is smaller than that of the premixing cavity.
2. The burner of claim 1, wherein the number of the plurality of air outlet pipes ranges from 81 to 225, the plurality of air outlet pipes are arranged in a square structure at the burner port, and the number of the plurality of air outlet pipes arranged on each side of the square ranges from 9 to 15.
3. The burner of claim 2, wherein the plurality of outlet pipes are inclined from one end connected to the premixing chamber to the center of the burner port, the inclination angle of the outlet pipes is between 6 ° and 15 °, the inner diameter ranges from 0.8 to 1.2mm, and the outer diameter ranges from 2.3 to 2.5mm.
4. A burner according to claim 3, wherein the plurality of outlet pipes have an inner diameter ranging from 0.8 to 1mm and an outer diameter ranging from 2.3 to 2.4mm, the plurality of outlet pipes have a number ranging from 81 to 169, the plurality of outlet pipes are arranged in a square configuration at the burner port, and the plurality of outlet pipes are arranged in a number ranging from 9 to 13 on each side of the square, so that the burner has a small flame width and a concentrated heating area.
5. A burner according to claim 3, wherein the plurality of outlet pipes have an inner diameter ranging from 1 to 1.2mm and an outer diameter ranging from 2.4 to 2.5mm, the plurality of outlet pipes have a number ranging from 169 to 225, the plurality of outlet pipes are arranged in a square configuration at the burner port, and the plurality of outlet pipes are arranged in a number ranging from 13 to 15 on each side of the square, so that the flame width and heating area of the burner are enlarged.
6. The burner of claim 1, further comprising a cooling water path provided at one side of the burner port for conducting circulated cooling water to reduce the temperature of the burner port.
7. An optical fiber preform processing apparatus comprising the burner according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711368663.9A CN109928611B (en) | 2017-12-18 | 2017-12-18 | Burner and optical fiber preform processing device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711368663.9A CN109928611B (en) | 2017-12-18 | 2017-12-18 | Burner and optical fiber preform processing device with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109928611A CN109928611A (en) | 2019-06-25 |
| CN109928611B true CN109928611B (en) | 2024-01-30 |
Family
ID=66982963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711368663.9A Active CN109928611B (en) | 2017-12-18 | 2017-12-18 | Burner and optical fiber preform processing device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109928611B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620929B (en) * | 2021-12-16 | 2023-09-08 | 杭州大和热磁电子有限公司 | Quartz fire polishing welding gun nozzle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694849A (en) * | 2002-12-20 | 2005-11-09 | 皮雷利&C.有限公司 | Burner for chemical vapour deposition of glass |
| CN1789188A (en) * | 2004-12-16 | 2006-06-21 | 三星电子株式会社 | Deposition burner for optical fiber preform |
| CN201180990Y (en) * | 2008-03-18 | 2009-01-14 | 上海复济节能技术有限公司 | Premixed high-efficiency energy-saving environment friendly combustor with ignition and flame-out protection device |
| CN101576257A (en) * | 2008-05-05 | 2009-11-11 | 原所良 | Burner, burning heating method and burning heating equipment |
| CN103058510A (en) * | 2011-10-18 | 2013-04-24 | 信越化学工业株式会社 | Burner used for producing porous glass preform and method for producing porous glass preform |
| CN204084374U (en) * | 2014-10-09 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Oxygen-enriched flameless gas burner |
| CN104266190A (en) * | 2014-10-09 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Oxygen-enriched flameless gas burner and control method thereof |
| CN106168378A (en) * | 2016-07-11 | 2016-11-30 | 北京航空航天大学 | A kind of premix classification strong eddy flow low stain gas burner |
| CN106430943A (en) * | 2015-08-07 | 2017-02-22 | 株式会社藤仓 | Method for manufacturing optical fiber preform |
| CN106746587A (en) * | 2016-12-26 | 2017-05-31 | 富通集团（嘉善）通信技术有限公司 | Manufacture the burner of preform |
| CN208055210U (en) * | 2017-12-18 | 2018-11-06 | 中天科技精密材料有限公司 | Burner and preform processing unit (plant) with the burner |
-
2017
- 2017-12-18 CN CN201711368663.9A patent/CN109928611B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694849A (en) * | 2002-12-20 | 2005-11-09 | 皮雷利&C.有限公司 | Burner for chemical vapour deposition of glass |
| CN1789188A (en) * | 2004-12-16 | 2006-06-21 | 三星电子株式会社 | Deposition burner for optical fiber preform |
| CN201180990Y (en) * | 2008-03-18 | 2009-01-14 | 上海复济节能技术有限公司 | Premixed high-efficiency energy-saving environment friendly combustor with ignition and flame-out protection device |
| CN101576257A (en) * | 2008-05-05 | 2009-11-11 | 原所良 | Burner, burning heating method and burning heating equipment |
| CN103058510A (en) * | 2011-10-18 | 2013-04-24 | 信越化学工业株式会社 | Burner used for producing porous glass preform and method for producing porous glass preform |
| CN204084374U (en) * | 2014-10-09 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Oxygen-enriched flameless gas burner |
| CN104266190A (en) * | 2014-10-09 | 2015-01-07 | 中冶南方(武汉)威仕工业炉有限公司 | Oxygen-enriched flameless gas burner and control method thereof |
| CN106430943A (en) * | 2015-08-07 | 2017-02-22 | 株式会社藤仓 | Method for manufacturing optical fiber preform |
| CN106168378A (en) * | 2016-07-11 | 2016-11-30 | 北京航空航天大学 | A kind of premix classification strong eddy flow low stain gas burner |
| CN106746587A (en) * | 2016-12-26 | 2017-05-31 | 富通集团（嘉善）通信技术有限公司 | Manufacture the burner of preform |
| CN208055210U (en) * | 2017-12-18 | 2018-11-06 | 中天科技精密材料有限公司 | Burner and preform processing unit (plant) with the burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109928611A (en) | 2019-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20010040674A (en) | Low firing rate oxy-fuel burner | |
| CN104180397B (en) | It is pre-mixed nozzle on duty | |
| CN109928611B (en) | Burner and optical fiber preform processing device with same | |
| US6233974B1 (en) | Oxygen-gaseous forehearth burner for air-fuel and oxy-fuel forehearth burner block geometries | |
| CN110360568A (en) | A kind of low nitrogen combustion apparatus and method | |
| KR101528807B1 (en) | Super-low NOx eission combustion apparatus using coanda effect | |
| CN104279561A (en) | External mixing type glass polishing combustor | |
| CN208055210U (en) | Burner and preform processing unit (plant) with the burner | |
| CN203703982U (en) | Combustor and combustion furnace | |
| CN109695875A (en) | A kind of more injection tubular type fire pieces | |
| CN106090905B (en) | Combustion furnace end and combustion furnace | |
| US11313554B2 (en) | Fluidic burner with heat stability | |
| US9046264B2 (en) | Method of controlling burners for heating liquid glass flow channels | |
| CN203411468U (en) | Glass fiber forming centrifugal machine | |
| EP3453683B1 (en) | Method for heating liquid glass channel of glass fiber tank furnace | |
| CN104154539A (en) | Oxygen-enriched combustion device | |
| CN211575107U (en) | Low-nitrogen premixed flue gas internal circulation gas burner | |
| CN103274586A (en) | Glass toughening furnace | |
| CN113587089A (en) | Air staged burner | |
| CN109654495B (en) | Radiant tube heating device | |
| CN207230537U (en) | A burner device with adjustable heat source area for optical fiber melting | |
| CN108980829A (en) | A kind of star-like gas-air premixed device | |
| CN117249685B (en) | Wall tiles, kilns and kiln temperature control systems | |
| CN111023089A (en) | Low nitrogen premixed flue gas internal circulation gas burner | |
| CN220624031U (en) | Nozzle and gas cooker |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |