CN106430944B - Blast burner assembly for OVD process deposition optical fiber preform - Google Patents
Blast burner assembly for OVD process deposition optical fiber preform Download PDFInfo
- Publication number
- CN106430944B CN106430944B CN201610978726.1A CN201610978726A CN106430944B CN 106430944 B CN106430944 B CN 106430944B CN 201610978726 A CN201610978726 A CN 201610978726A CN 106430944 B CN106430944 B CN 106430944B
- Authority
- CN
- China
- Prior art keywords
- hole
- lamp holder
- cavity
- oxygen
- hydrogen
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a blowtorch component for OVD technology deposition optical fiber perform, which comprises a lamp holder, a distribution ring, a lamp holder and a material tube, and is characterized in that the front section of the material tube is flat, the lamp holder is provided with a central material hole, the front section of the central material hole is flat and is configured with the material tube, an isolation gas cavity, an inner oxygen cavity, a hydrogen or mixed natural gas cavity and an outer oxygen cavity are respectively arranged around the periphery of the central material hole at intervals, the front end surface of the lamp holder is provided with the distribution ring, the distribution ring is provided with a flat central through hole, the periphery of the distribution ring is correspondingly provided with an isolation gas discharge hole, an inner oxygen discharge hole, a hydrogen or mixed natural gas discharge hole and an outer oxygen discharge hole, the middle part of the lamp holder is provided with a central flat hole, an isolation gas spray hole is formed between the lamp holder and the periphery of the front end of the material tube. The discharge hole of the material pipe is flat, so that SIO2 powder flow can be concentrated on the axial injection of the target rod, better collection is facilitated, and the deposition efficiency and precision are improved.
Description
Technical Field
The invention relates to a blast burner component for an OVD process deposited optical fiber preform, belonging to the technical field of optical fiber manufacturing equipment.
Background
The outside Vapor phase chemical deposition (OVD) process is one of the main processes in the preparation of optical fiber preform. The process sprays gas-phase raw materials outside a target rod through a blast lamp, so that the raw materials and oxygen generate chemical reaction at high temperature to generate silicon dioxide fine particles, and the particles are deposited on the target rod through a hot-surge effect to form a core part and a cladding of a powder prefabricated rod. And the blast burner and the target rod move relatively, so that the silica fine particles are deposited on the target rod layer by layer until the designed weight and diameter are reached, and an intermediate product of the optical fiber preform is obtained. The target rod is typically held horizontally and rotated, and the torch assembly is moved slowly along the axis of the target rod to spray. The torch assembly is a critical part of the OVD process. A conventional burner assembly, as disclosed in EP0800490B1, mainly comprises a burner, a distribution ring, a tube and a lamp holder, wherein the burner of the burner assembly is circular, and the reaction gas is distributed in a circular shape around the tube. Circular spout can not make whole injection powder flow direction target rod when in actual use, has the problem that injection deposition precision and efficiency are high inadequately, and in addition, the structural design of blowtorch subassembly is still unreasonable.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a blast lamp component for OVD process deposition optical fiber preform aiming at the defects in the prior art, which not only has reasonable structure arrangement and gas distribution, but also has high jet deposition precision and efficiency.
The technical scheme adopted by the invention for solving the problems is as follows: the lamp holder is provided with a central material hole, the front section of the central material hole is in a flat shape and is configured with the material pipe, an isolation gas cavity, an inner oxygen cavity, a hydrogen or mixed natural gas cavity and an outer oxygen cavity are respectively arranged at intervals from inside to outside around the periphery of the flat central material hole, the front end face of the lamp holder is provided with the distribution ring, the distribution ring is provided with a flat central through hole, the periphery of the central through hole is correspondingly provided with the isolation gas discharge hole, the inner oxygen discharge hole, the hydrogen or mixed natural gas discharge hole and the outer oxygen discharge hole from inside to outside, the frontmost part of the lamp holder is connected with the lamp holder, the middle part of the lamp holder is provided with the flat central flat hole, a gap is formed between the central flat hole and the periphery of the front end of the material pipe to form an isolation gas spray hole, and an inner oxygen spray hole, a hydrogen or mixed natural gas spray hole and an outer oxygen spray hole are correspondingly arranged on the periphery of the isolation gas spray hole from inside to outside respectively.
According to the scheme, the periphery of the front section of the material pipe is in a waist-round shape, the discharge holes of the front section are long waist-round holes or a row of parallel through holes, the rear section of the material pipe is in a round pipe shape, and the round holes of the rear section are feeding cavities.
According to the scheme, the lamp holder is provided with an isolation gas cavity, an inner oxygen cavity, a hydrogen or mixed natural gas cavity and an outer oxygen cavity which are arranged from inside to outside at intervals, the isolation gas cavity, the inner oxygen cavity, the hydrogen or mixed natural gas cavity and the outer oxygen cavity are rectangular annular cavities from small to large, and all the annular cavities are respectively communicated with all gas sources through connecting holes.
According to the scheme, the distribution ring is in a rectangular block shape, and a rectangular concave cavity is formed in the front end face of the lamp holder and is configured with the distribution ring.
According to the scheme, the distribution ring is provided with the rectangular array holes from large to small from the inside to the outside, wherein the rectangular array holes are correspondingly arranged from the inside to the outside in the distribution ring, and the isolated gas array holes, the internal oxygen array holes, the hydrogen or mixed natural gas array holes and the external oxygen array holes are correspondingly arranged from the inside to the outside.
According to the scheme, the inner oxygen exhaust hole, the hydrogen or mixed natural gas exhaust hole and the outer oxygen exhaust hole of the lamp holder rear end face corresponding to the distribution ring are respectively provided with the inner oxygen annular cavity, the hydrogen or mixed natural gas annular cavity and the outer oxygen annular cavity which are rectangular from large to small, and the strip-shaped gap-shaped inner oxygen spray holes, the row-shaped hydrogen or mixed natural gas spray holes and the row-shaped outer oxygen spray holes which are symmetrically arranged along the upper side and the lower side and the left side and the right side are respectively and correspondingly arranged from inside to outside in the rear end face of the lamp holder corresponding to the annular cavities.
According to the scheme, the row of holes are a row of round holes which are arranged in parallel.
According to the scheme, the lamp holder, the distribution ring, the lamp holder and the material pipe are all made of metal, and the metal is titanium alloy, nickel-based alloy, aluminum alloy or stainless steel.
The invention has the beneficial effects that: 1. the discharge hole of the material pipe is flat and is a flat hole or a row of holes, so that SIO2 powder flow can be concentrated on the axial injection of the target rod, better collection is facilitated, the deposition efficiency and precision are improved, the interference of SIO2 powder flow between the lamps can be effectively reduced when a plurality of lamps are arranged, and the deposition efficiency and the cleanness of a lampshade in the deposition process are improved; 2. the inner oxygen spray holes are in a strip slit shape, so that the concentration and the combustion efficiency of SIO2 powder flow can be improved, and great contribution is made to the overall collection rate and density; the other spray body holes are also arranged into the peripheral row holes which are arranged in a rectangular manner, so that the surface temperature of the powder rod can be improved by increasing the axial flame width, and the density and the processing quality of the powder rod are further improved; 3. the invention has simple and reasonable structure arrangement and air hole air ring arrangement, good repeatability and easy processing and maintenance.
Drawings
Fig. 1 is a perspective view of one embodiment of the present invention.
Fig. 2 is a front cross-sectional view of one embodiment of the present invention.
Fig. 3 is an enlarged view of a portion i in fig. 2.
Fig. 4 is a left side view of a lamp socket according to an embodiment of the present invention.
Fig. 5 is a left side view of a distribution ring in one embodiment of the invention.
Fig. 6 is a left side view of the lighthead in one embodiment of the invention.
Fig. 7 is a right side view of the lamp head in one embodiment of the invention.
Fig. 8 is a left side view of the feed tube in one embodiment of the invention.
Fig. 9 is a left side view of another construction of a feed tube in accordance with an embodiment of the present invention.
Detailed Description
The following further describes specific embodiments of the present invention with reference to the drawings. The lamp comprises a lamp holder 3, a distribution ring 2, a lamp cap 1 and a material tube 4, wherein the material tube is matched and connected with a material hole in the center of the lamp holder, the distribution ring and the lamp cap are arranged at the front end of the lamp holder, and the distribution ring is arranged between the lamp cap and the lamp holder. The transverse section of the periphery of the front section of the material pipe is in a waist-round shape, the discharge hole of the front section is a long waist-round hole 19 or a row of parallel through holes 18, the rear section of the material pipe is in a round pipe shape, and the round hole of the rear section is a feeding cavity 9. The lamp holder be provided with central material hole, the anterior segment in central material hole is long waist circle form and material pipe configuration mutually, the back end is the circular port, around the periphery in long waist circle form central material hole from inside to outside respectively the interval set up isolation gas air cavity 8, interior oxygen chamber 7, hydrogen or mixed natural gas air cavity 6, outer oxygen chamber 5, the interval set up isolation gas air cavity, interior oxygen chamber, hydrogen or mixed natural gas air cavity, outer oxygen chamber be from little to big rectangular ring chamber, each ring chamber front end opens, each ring chamber is linked together with each air supply through the connecting hole respectively. The lamp holder is characterized in that a rectangular concave cavity is formed in the front end face of the lamp holder, a distribution ring 2 is arranged in the concave cavity, the distribution ring is rectangular and blocky and is provided with a long-waist circular central through hole, an isolation gas exhaust hole 17, an inner oxygen exhaust hole 16, a hydrogen or mixed natural gas exhaust hole 15 and an outer oxygen exhaust hole 14 are correspondingly arranged on the periphery of the central through hole from inside to outside, and the correspondingly arranged isolation gas exhaust hole, the inner oxygen exhaust hole, the hydrogen or mixed natural gas exhaust hole and the outer oxygen exhaust hole are rectangular exhaust holes from large to small; wherein the aperture of the isolation gas exhaust hole is smaller than 1-1.5 mm, and the apertures of other exhaust holes are 2-3 mm. The lamp holder is connected with the lamp holder at the forefront of the lamp holder and is connected with the lamp holder through screw holes on the periphery by bolts, a flat central flat hole is arranged in the middle of the lamp holder and is in a long waist circle shape, a gap exists between the central flat hole and the periphery of the front end of the material pipe to form an annular isolation gas spray hole 10, an inner oxygen spray hole 11, a hydrogen or mixed natural gas spray hole 12 and an outer oxygen spray hole 13 are correspondingly arranged on the periphery of the isolation gas spray hole from inside to outside respectively, an inner oxygen ring cavity, a hydrogen or mixed natural gas ring cavity and an outer oxygen ring cavity which are rectangular from large to small are correspondingly arranged on the rear end face of the lamp holder and correspond to the inner oxygen discharge hole, the hydrogen or mixed natural gas discharge hole and the outer oxygen ring cavity of the distribution ring respectively, and strip-shaped slit-shaped inner oxygen spray holes, hole-shaped hydrogen or mixed natural gas spray holes, which are symmetrically arranged from top to bottom and left and right are, Row-hole-shaped outer oxygen jet holes. The row of holes are a row of round holes which are arranged in parallel, and each side of the row of round holes is a row. The lamp holder, the distribution ring, the lamp holder and the material pipe are all made of nickel-based alloy.
Claims (5)
1. A blowtorch assembly for OVD process deposition optical fiber perform rod comprises a lamp holder, a distribution ring, a lamp holder and a material tube, wherein the material tube is matched with a central material hole of the lamp holder, the distribution ring and the lamp holder are arranged at the front end of the lamp holder, the blowtorch assembly is characterized in that the front section of the material tube is flat, the discharge hole at the front section is a flat hole or a row hole, the lamp holder is provided with the central material hole, the front section of the central material hole is flat and is configured with the material tube, an isolation gas cavity, an inner oxygen cavity, a hydrogen or mixed natural gas cavity and an outer oxygen cavity are respectively arranged around the periphery of the flat central material hole at intervals from inside to outside, the distribution ring is arranged at the front end surface of the lamp holder, the distribution ring is provided with a flat central through hole, and the isolation gas row hole, the inner oxygen row hole, the hydrogen or mixed natural gas row hole and the outer oxygen row hole are respectively and correspondingly arranged, the lamp holder is connected to the frontmost surface of the lamp holder, a flat central flat hole is arranged in the middle of the lamp holder, a gap exists between the central flat hole and the periphery of the front end of the material pipe to form an isolation gas spray hole, and an inner oxygen spray hole, a hydrogen or mixed natural gas spray hole and an outer oxygen spray hole are correspondingly arranged on the periphery of the isolation gas spray hole from inside to outside respectively; the lamp holder is provided with an isolated gas cavity, an internal oxygen cavity, a hydrogen or mixed natural gas cavity and an external oxygen cavity which are arranged from inside to outside at intervals respectively, the isolated gas cavity, the internal oxygen cavity, the hydrogen or mixed natural gas cavity and the external oxygen cavity are rectangular annular cavities from small to large, and each gas cavity is communicated with each gas source through a connecting hole; the distribution ring is provided with an isolated gas exhaust hole, an inner oxygen exhaust hole, a hydrogen or mixed natural gas exhaust hole and an outer oxygen exhaust hole which are respectively and correspondingly arranged from inside to outside and are rectangular exhaust holes from small to large; the lamp holder rear end face corresponds interior oxygen row hole, hydrogen or mixed natural gas row hole, the outer oxygen row hole of distribution ring and sets up the interior oxygen ring chamber, hydrogen or mixed natural gas ring chamber, the outer oxygen ring chamber of rectangle from small to big respectively, corresponds the bar slot form that sets up along upper and lower side and bilateral symmetry respectively at the preceding terminal surface of lamp holder from inside to outside and sets up respectively, arranges poroid hydrogen or mixed natural gas orifice, arranges poroid outer oxygen orifice.
2. The torch assembly of claim 1 wherein the transverse cross-section of the outer periphery of the front section of said feed tube is a waist-circular shape, the discharge holes of the front section are long waist-circular holes or a row of parallel through holes, the rear section of said feed tube is a circular tube shape, and the circular holes of the rear section are feed cavities.
3. A burner assembly for OVD deposition of an optical fiber preform according to claim 1 or 2, wherein the distribution ring has a rectangular block shape, and a rectangular concave cavity is formed in the front end surface of the lamp holder to be disposed with the distribution ring.
4. A torch assembly for OVD deposition of an optical fiber preform according to claim 1 or 2, wherein said row of holes is a row of parallel arranged circular holes.
5. A torch assembly for OVD deposition of an optical fiber preform according to claim 1 or 2, wherein said lamp base, distribution ring, lamp cap and feed tube are made of metal, said metal being titanium alloy, nickel base alloy, aluminum alloy or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978726.1A CN106430944B (en) | 2016-11-08 | 2016-11-08 | Blast burner assembly for OVD process deposition optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978726.1A CN106430944B (en) | 2016-11-08 | 2016-11-08 | Blast burner assembly for OVD process deposition optical fiber preform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106430944A CN106430944A (en) | 2017-02-22 |
| CN106430944B true CN106430944B (en) | 2020-10-30 |
Family
ID=58207472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610978726.1A Active CN106430944B (en) | 2016-11-08 | 2016-11-08 | Blast burner assembly for OVD process deposition optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106430944B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904822B (en) * | 2017-02-24 | 2019-05-24 | 天津富通集团有限公司 | The manufacturing method of preform |
| CN110966607B (en) * | 2019-12-26 | 2022-04-15 | 中天科技精密材料有限公司 | Natural gas auxiliary flame treatment burner |
| CN113860721B (en) * | 2021-10-28 | 2023-12-08 | 国网山东省电力公司烟台供电公司 | Blow lamp for manufacturing optical fiber preform |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03112820A (en) * | 1989-09-25 | 1991-05-14 | Shin Etsu Chem Co Ltd | Production of porous glass preform |
| CN2110139U (en) * | 1991-09-17 | 1992-07-15 | 石家庄市焊割炬厂 | Three-gas flame heating apparatus spray nozzle |
| US5599371A (en) * | 1994-12-30 | 1997-02-04 | Corning Incorporated | Method of using precision burners for oxidizing halide-free, silicon-containing compounds |
-
2016
- 2016-11-08 CN CN201610978726.1A patent/CN106430944B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03112820A (en) * | 1989-09-25 | 1991-05-14 | Shin Etsu Chem Co Ltd | Production of porous glass preform |
| CN2110139U (en) * | 1991-09-17 | 1992-07-15 | 石家庄市焊割炬厂 | Three-gas flame heating apparatus spray nozzle |
| US5599371A (en) * | 1994-12-30 | 1997-02-04 | Corning Incorporated | Method of using precision burners for oxidizing halide-free, silicon-containing compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106430944A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106430944B (en) | Blast burner assembly for OVD process deposition optical fiber preform | |
| EP2583952B1 (en) | Method and burner for producing a porous glass preform | |
| CN109912192B (en) | Torch for optical fiber preform | |
| US20140165656A1 (en) | Method of fabricating an optical fiber preform and a burner therefor | |
| KR20080098402A (en) | Quartz glass made burner | |
| CN110372200A (en) | A kind of detachable blowtorch preparing preform for VAD method | |
| CN1694849A (en) | Burner for chemical vapour deposition of glass | |
| US10829405B2 (en) | Method for producing porous glass deposit for optical fiber | |
| US8695380B2 (en) | Quartz glass burner | |
| US9227869B2 (en) | Porous glass base material manufacturing burner and optical fiber porous glass base material manufacturing apparatus | |
| CN210457965U (en) | Blowtorch for manufacturing large-size and high-deposition-rate optical fiber preform | |
| EP2573054B1 (en) | Method for manufacturing an optical fiber preform by flame hydrolysis | |
| CN220845926U (en) | Handheld blowtorch bracket | |
| CN206646030U (en) | Nozzle arrangements prepared by a kind of preform | |
| CN1268439C (en) | Spraying gun with multiple flow passages | |
| CN210711257U (en) | Oxyhydrogen flame quartz burner for melting silicon dioxide loose body | |
| EP2380856B1 (en) | Burner for producing porous glass preform | |
| CN215924774U (en) | Deposition blowtorch adopting three-stage flame VAD (vapor deposition) process | |
| US20180044221A1 (en) | Method and apparatus for producing optical fiber preform | |
| JP6066103B2 (en) | Burner for manufacturing porous glass base material | |
| CN211232874U (en) | Novel oxyhydrogen fire head structure | |
| US11577983B2 (en) | Adjustable fume tube burner | |
| JPH03112820A (en) | Production of porous glass preform | |
| CN113788611A (en) | Deposition blowtorch adopting three-stage flame VAD (vapor deposition) process | |
| CN202392806U (en) | Distributor for gas range and combustor using distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |