CN109912192B - Torch for optical fiber preform - Google Patents
Torch for optical fiber preform Download PDFInfo
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- CN109912192B CN109912192B CN201910299235.8A CN201910299235A CN109912192B CN 109912192 B CN109912192 B CN 109912192B CN 201910299235 A CN201910299235 A CN 201910299235A CN 109912192 B CN109912192 B CN 109912192B
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- annular groove
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- 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
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
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- 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
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
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- 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
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- 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
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Glass Melting And Manufacturing (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The application discloses a blowtorch for optical fiber perform, the blowtorch is the metal blowtorch. The blast lamp is a metal blast lamp, has high structural strength compared with a blast lamp made of glass materials, can remove silica plugs accumulated in the blast lamp in various ways, and has long service life; the blowtorch hole is formed by machining, the hole precision is high, and the blowtorch combustion effect is better.
Description
The application is a divisional application with application date of 2017, 24.02 and 20178, application number of 201710104133.7 and invented name of "manufacturing method of optical fiber preform".
Technical Field
The invention relates to the field of optical fiber preforms, in particular to a manufacturing method of an optical fiber preform.
Background
The VAD method and the OVD method are both carried out for manufacturing the optical fiber preform by a blast burner, the blast burner is used for injecting fuel (silicon tetrachloride), combustible gas (hydrogen) and combustion-supporting gas (oxygen), and the gases are subjected to chemical reaction to generate silicon dioxide particles. The existing blast burner is a glass blast burner, is limited by glass materials, has lower precision of each part of the blast burner, has poorer concentricity of a blast burner nozzle, can influence the deposition quality, can block the nozzle after the blast burner is used for a period of time, can only be cleaned by hydrofluoric acid because the glass materials are fragile, but the blast burner structure can be corroded by the cleaning mode, and the service life of the blast burner is shortened.
Disclosure of Invention
The invention provides a method for manufacturing an optical fiber preform aiming at the problems.
The technical scheme adopted by the invention is as follows:
a method of fabricating an optical fiber preform, comprising the steps of:
1) welding auxiliary rods at two ends of the core rod, and mounting the auxiliary rods on the chuck;
2) the chuck drives the auxiliary rod and the core rod to rotate, the blast lamp arranged below the core rod works and reciprocates along the length direction of the core rod, so that loose particles are deposited on the outer surface of the core rod;
3) sintering the loose body prepared in the step 2) to finally sinter the loose body into an optical fiber preform;
the blast burner in the step 2) is a metal blast burner, and the blast burner comprises:
the gas burner comprises a burner body, wherein the burner body sequentially comprises a central channel, an internal combustion gas channel and a combustible gas channel from inside to outside; the central channel comprises a circular groove arranged at the mounting end and a central hole arranged at the nozzle end and communicated with the circular groove, the inner diameter of the central hole is smaller than that of the circular groove, and internal threads are arranged in the circular groove; the inner combustion assisting gas channel comprises a first annular groove arranged at the mounting end and a plurality of first air outlet holes arranged at the nozzle end and communicated with the first annular groove, the first air outlet holes are uniformly distributed around the axis of the central hole, and two side walls of the first annular groove are provided with internal threads; the combustible gas channel comprises a second annular groove arranged at the mounting end and a plurality of second air outlet holes which are arranged at the nozzle end and communicated with the second annular groove, the second air outlet holes are uniformly distributed around the axis of the central hole, and two side walls of the second annular groove are provided with internal threads; the first annular groove is positioned on the inner side of the second annular groove, and the circular groove is positioned on the inner side of the first annular groove;
the gas isolating pipe comprises an open end and a closed end, the outer side wall of the open end of the gas isolating pipe is provided with an external thread, the closed end of the gas isolating pipe is provided with a through hole, the gas isolating pipe is matched and fixed with the internal thread of the circular groove through the external thread, the outer diameter of the central pipe is smaller than the inner diameter of the central hole, one end of the central pipe penetrates through the open end of the gas isolating pipe and then extends into the central hole, the other end of the central pipe penetrates through the through hole, and the corresponding outer side wall of the central pipe is in sealing fit with the through hole;
the inner combustion-supporting pipe is in threaded connection with two side walls of the first annular groove through threads;
one end face of the combustible pipe is provided with a second annular groove, threads are arranged on the inner side wall and the outer side wall of the combustible pipe, which correspond to the notch of the second annular groove, and the combustible pipe is in threaded connection with the two side walls of the second annular groove through the threads;
one end face of the outer combustion-supporting pipe is provided with a third annular groove, threads are arranged on the inner side wall and the outer side wall of the outer combustion-supporting pipe, which correspond to the notch of the third annular groove, and the inner side wall of the outer combustion-supporting pipe is matched and connected with external threads on the outer side wall of the blast lamp main body through the threads;
the outer cover, outer cover inside wall one end has the internal thread, the outer cover through the internal thread with outer combustion-supporting pipe's lateral wall threaded connection, the space between outer cover and the blast lamp main part lateral wall constitutes outer combustion-supporting gas passageway.
The blast lamp is a metal blast lamp, has high structural strength compared with a blast lamp made of glass materials, can remove silica plugs accumulated in the blast lamp in various ways, and has long service life; the central hole, the first air outlet hole and the second air outlet hole of the blowtorch are all formed by machining, the hole precision is high, and the combustion effect of the blowtorch is better; the isolation gas pipe, the inner combustion-supporting pipe, the combustible pipe, the outer combustion-supporting pipe and the outer cover are in threaded connection, the connection mode is reliable, the disassembly and the assembly are more convenient, when a certain part is damaged, the blowtorch can normally work only by replacing the damaged part, and the maintenance cost of the blowtorch is low.
The inner space of the central tube of the blast burner is used for transmitting fuel and combustible gas, the space between the central hole and the central tube is an inert gas channel, and the inert gas enters the inert gas channel after passing through the space between the isolation gas tube and the central tube; the inner combustion-supporting pipe is used for introducing oxygen and enters the first air outlet hole through the notch of the first annular groove; the combustible tube is used for introducing combustible gas and enters the second air outlet hole through the notch of the second annular groove; the outer combustion-supporting pipe is used for introducing oxygen and enters the outer combustion-supporting gas channel through the notch of the third annular groove.
Optionally, the outer side wall of the side where the nozzle end of the blast lamp main body is located is a conical outer side wall, and the nozzle end is a small-diameter end; the outer cover is provided with a conical inner side wall matched with the conical outer side wall.
The cooperation of toper lateral wall and toper inside wall can make outer combustion-supporting gas passageway gas outlet gather to the blowtorch body center. Through the blowtorch body and the dustcoat of selecting suitable inclination (the angle of taper part), can fix the focus point of outer combustion-supporting gas passageway gas outlet in suitable position, can make flame temperature reach the optimum, fully improve the temperature of burning flame and the degree of agglomeration that generates the dust granule, make the adsorption rate increase of dust granule on optical fiber perform target rod.
Optionally, the inner side wall and the outer side wall of one side of the combustible tube and the inner combustion-supporting tube, which are adjacent to the mounting end of the burner main body, are provided with limiting rings, and the limiting rings are matched with the mounting end to realize limiting; the inner side wall and the outer side wall of one side, adjacent to the mounting end of the blast burner main body, of the outer combustion-supporting pipe are respectively provided with a limiting ring, the limiting rings at the inner side wall of the outer combustion-supporting pipe are matched with the mounting end to realize limiting, and the limiting rings at the outer side wall of the outer combustion-supporting pipe are matched with the end part of the outer cover to realize limiting.
Optionally, the material of the torch is stainless steel, such as 361 stainless steel.
Optionally, an air inlet pipe is arranged on one side, away from the torch body, of the isolation gas pipe, the inner combustion-supporting pipe, the combustible pipe and the outer combustion-supporting pipe, and the space of the air inlet pipe is communicated with the inner space of the corresponding pipe. The air inlet pipe is used for introducing corresponding raw materials into the corresponding pipe.
Optionally, a part of the first annular groove of the inner combustion-supporting pipe, which is adjacent to the mounting end, is provided with a plurality of supporting columns, and the supporting columns are used for connecting two corresponding side walls of the first annular groove; the part of the second annular groove of the combustible tube, which is adjacent to the mounting end, is provided with a plurality of supporting columns, and the supporting columns are used for connecting two corresponding side walls of the second annular groove; the part of the third annular groove of the outer combustion-supporting pipe, which is adjacent to the mounting end, is provided with a plurality of supporting columns, and the supporting columns are used for connecting two corresponding side walls of the third annular groove. The support columns are arranged to prevent deformation of the annular grooves.
Optionally, two side walls of the first annular groove have two annular recesses arranged oppositely, and the two annular recesses of the first annular groove form a buffer cavity.
The design of cushion chamber for gas to the blowtorch body transport experiences inflation and compression process, can make exit velocity of flow distribution more even, and the blowtorch is more stable during the burning.
Optionally, two side walls of the second annular groove have two annular recesses arranged oppositely, and the two annular recesses of the second annular groove form a buffer chamber.
Optionally, two side walls of the third annular groove have two annular recesses arranged oppositely, and the two annular recesses of the third annular groove form a buffer cavity.
Optionally, the buffer cavity is internally provided with a support column, and the support column is used for connecting the two corresponding annular recesses.
The invention has the beneficial effects that: the blast lamp is a metal blast lamp, has high structural strength compared with a blast lamp made of glass materials, can remove silica plugs accumulated in the blast lamp in various ways, and has long service life; the central hole, the first air outlet hole and the second air outlet hole of the blowtorch are all formed by machining, the hole precision is high, and the combustion effect of the blowtorch is better; the isolation gas pipe, the inner combustion-supporting pipe, the combustible pipe, the outer combustion-supporting pipe and the outer cover are in threaded connection, the connection mode is reliable, the disassembly and the assembly are more convenient, when a certain part is damaged, the blowtorch can normally work only by replacing the damaged part, and the maintenance cost of the blowtorch is low.
Description of the drawings:
FIG. 1 is a cross-sectional view of a torch of the present invention;
FIG. 2 is a top view of the torch of the present invention;
FIG. 3 is a cross-sectional view of the torch body and the outer cover;
fig. 4 is a sectional view of the torch body;
FIG. 5 is a schematic view of an outer burner tube configuration;
FIG. 6 is a schematic view of a combustible tube construction;
FIG. 7 is a schematic view of an inner booster structure;
FIG. 8 is a perspective view of an outer combustion supporting tube according to embodiment 2;
FIG. 9 is a sectional view of an outer combustion supporting tube in accordance with example 2.
The figures are numbered:
1. a torch body; 2. a housing; 3. an insulating gas pipe; 4. a central tube; 5. an inner combustion supporting tube; 6. a combustible tube; 7. an outer combustion supporting tube; 8. a nozzle end; 9. an installation end; 10. a central bore; 11. a circular groove; 12. a first air outlet hole; 13. a second air outlet; 14. a first annular groove; 15. a second annular groove; 16. a tapered outer sidewall; 17. a tapered inner sidewall; 18. an outer combustion supporting gas channel; 19. a limiting ring; 20. a support pillar; 21. a first annular groove; 22. a second annular groove; 23. a third annular groove; 24. an air inlet pipe; 25. passing through the aperture; 26. an annular recess; 27. a buffer chamber.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
A method of fabricating an optical fiber preform, comprising the steps of:
1) welding auxiliary rods at two ends of the core rod, and mounting the auxiliary rods on the chuck;
2) the chuck drives the auxiliary rod and the core rod to rotate, the blast lamp arranged below the core rod works and reciprocates along the length direction of the core rod, so that loose particles are deposited on the outer surface of the core rod;
3) sintering the loose body prepared in the step 2) to finally sinter the loose body into an optical fiber preform;
the blast lamp in the step 2) is a metal blast lamp, as shown in fig. 1-7, the blast lamp comprises:
the gas burner comprises a burner body 1, wherein the burner body 1 sequentially comprises a central channel, an internal combustion gas channel and a combustible gas channel from inside to outside, one end of the burner body 1 is a nozzle end 8, the other end of the burner body is a mounting end 9, and external threads are arranged on the outer side wall of the mounting end 9 of the burner body; the central channel comprises a circular groove 11 arranged at the mounting end 9 and a central hole 10 arranged at the nozzle end 8 and communicated with the circular groove 11, the inner diameter of the central hole 10 is smaller than that of the circular groove 11, and internal threads are arranged in the circular groove 11; the inner combustion assisting gas channel comprises a first annular groove 14 arranged at the mounting end 9 and a plurality of first gas outlet holes 12 which are arranged at the nozzle end 8 and communicated with the first annular groove 14, the first gas outlet holes 12 are uniformly distributed around the axis of the central hole 10, and two side walls of the first annular groove 14 are provided with internal threads; the combustible gas channel comprises a second annular groove 15 arranged at the mounting end 9 and a plurality of second air outlet holes 13 which are arranged at the nozzle end 8 and communicated with the second annular groove 15, the second air outlet holes 13 are uniformly distributed around the axis of the central hole 10, and two side walls of the second annular groove 15 are provided with internal threads; the first annular groove 14 is positioned inside the second annular groove 15, and the circular groove 11 is positioned inside the first annular groove 14;
the gas pipe isolation device comprises a central pipe 4 and an isolation gas pipe 3, wherein the central pipe 4 is sleeved on the isolation gas pipe 3 and is relatively fixed with the isolation gas pipe 3, the isolation gas pipe 3 comprises an open end and a closed end, the outer side wall of the open end of the isolation gas pipe 3 is provided with an external thread, the closed end of the isolation gas pipe 3 is provided with a through hole 25, the isolation gas pipe 3 is matched and fixed with the internal thread of a circular groove 11 through the external thread, the outer diameter of the central pipe 4 is smaller than the inner diameter of the central hole 10, one end of the central pipe 4 penetrates through the open end of the isolation gas pipe 3 and then extends into the central hole 10, the other end of the central pipe 4 penetrates through the through hole 25, and the corresponding outer side wall of the central pipe 4 is in sealing fit with the through hole 25;
the combustion-supporting structure comprises an inner combustion-supporting pipe 5, wherein one end face of the inner combustion-supporting pipe 5 is provided with a first annular groove 21, the inner side wall and the outer side wall of the inner combustion-supporting pipe 5, which correspond to the notch of the first annular groove 21, are provided with threads, and the inner combustion-supporting pipe 5 is in threaded connection with the two side walls of the first annular groove 14 through the threads;
one end face of the combustible tube 6 is provided with a second annular groove 22, the inner side wall and the outer side wall of the combustible tube 6 corresponding to the notches of the second annular groove 22 are both provided with threads, and the combustible tube 6 is in threaded connection with the two side walls of the second annular groove 15 through the threads;
the burner comprises an outer combustion-supporting pipe 7, wherein one end face of the outer combustion-supporting pipe 7 is provided with a third annular groove 23, the inner side wall and the outer side wall of the outer combustion-supporting pipe 7, which correspond to the notches of the third annular groove 23, are provided with threads, and the inner side wall of the outer combustion-supporting pipe 7 is connected with the external threads of the outer side wall of the burner body 1 in a matching way through the threads;
the outer cover 2, outer cover 2 inside wall one end has the internal thread, and outer cover 2 passes through the internal thread and outer wall threaded connection of outer combustion-supporting pipe 7, and the space between outer cover 2 and the torch main part 1 lateral wall constitutes outer combustion-supporting gas passageway 18.
The blast lamp is a metal blast lamp, has high structural strength compared with a blast lamp made of glass materials, can remove silica plugs accumulated in the blast lamp in various ways, and has long service life; the central hole 10, the first air outlet hole 12 and the second air outlet hole 13 of the blowtorch are all formed by machining, the hole precision is high, and the combustion effect of the blowtorch is better; the isolation gas pipe 3, the inner combustion-supporting pipe 5, the combustible pipe 6, the outer combustion-supporting pipe 7 and the outer cover 2 are connected through threads, the connection mode is reliable, the disassembly and the assembly are more convenient, when a certain part is damaged, the blowtorch can normally work only by replacing the damaged part, and the maintenance cost of the blowtorch is low.
The inner space of a central tube 4 of the blast burner is used for transmitting fuel and combustible gas, the space between a central hole 10 and the central tube 4 is an inert gas channel, and the inert gas enters the inert gas channel after passing through the space between an isolation gas tube 3 and the central tube 4; the inner combustion-supporting pipe 5 is used for introducing oxygen and enters the first air outlet hole 12 through the notch of the first annular groove 21; the combustible tube 6 is used for introducing combustible gas and enters the second gas outlet hole 13 through the notch of the second annular groove 22; the outer combustion supporting pipe 7 is used for introducing oxygen and enters the outer combustion supporting gas channel 18 through the notch of the third annular groove 23.
As shown in fig. 3, in the present embodiment, the outer sidewall of the side where the nozzle end 8 of the burner main body is located is a tapered outer sidewall 16, and the nozzle end 8 is a small diameter end; the housing 2 has a conical inner side wall 17 adapted to a conical outer side wall 16.
The matching of the conical outer side wall 16 and the conical inner side wall 17 can lead the air outlet of the outer combustion-supporting gas channel 18 to gather towards the center of the torch body. Through the blowtorch body and the dustcoat 2 of selecting suitable inclination (the angle of taper part), can fix outer combustion-supporting gas passage 18 gas outlet focus in suitable position, can make flame temperature reach the optimum, fully improve the temperature of burning flame and the degree of agglomeration that generates the dust granule, make the adsorption rate increase of dust granule on optical fiber perform target rod.
In the present embodiment, as shown in fig. 1, 5, 6 and 7, the inner and outer side walls of the combustible tube 6 and the inner combustion-supporting tube 5 adjacent to the mounting end 9 of the burner body are provided with limiting rings 19, and the limiting rings 19 cooperate with the mounting end 9 to realize limiting; the inner side wall and the outer side wall of one side, close to the mounting end 9 of the burner main body, of the outer combustion-supporting pipe 7 are provided with limiting rings 19, the limiting rings 19 at the inner side wall of the outer combustion-supporting pipe 7 are matched with the mounting end 9 to achieve limiting, and the limiting rings 19 at the outer side wall of the outer combustion-supporting pipe 7 are matched with the end part of the outer cover 2 to achieve limiting.
In this embodiment, the material of the torch is stainless steel, such as 361 stainless steel.
As shown in fig. 1, in the present embodiment, an air inlet pipe 24 is provided at a side of the shielding gas pipe 3, the inner burner pipe 5, the burner pipe 6, and the outer burner pipe 7 away from the burner body, and a space of the air inlet pipe 24 communicates with an inner space of the corresponding pipe. The inlet pipe 24 is used for introducing the corresponding raw material into the corresponding pipe.
As shown in fig. 1, in the present embodiment, a portion of the first annular groove 21 of the inner burner pipe 5 adjacent to the mounting end 9 has a plurality of supporting pillars 20, and the supporting pillars 20 are used to connect two corresponding side walls of the first annular groove 21; the portion of the second annular groove 22 of the combustible tube 6 adjacent to the mounting end 9 has a plurality of support posts 20, the support posts 20 being used to connect two corresponding side walls of the second annular groove 22; the portion of the third annular groove 23 of the outer comburent conduit 7 adjacent to the mounting end 9 has a plurality of supporting columns 20, the supporting columns 20 being intended to connect the two corresponding side walls of the third annular groove 23. The provision of the support posts 20 prevents deformation of the annular groove.
Example 2
As shown in fig. 8 and 9, the present embodiment is different from embodiment 1 in that both side walls of the third annular groove 23 of the outer burner tube have two annular recesses 26 disposed oppositely, and the two annular recesses 26 of the third annular groove form a buffer chamber 27. The design of the buffer cavity 27 enables the gas delivered to the torch body to undergo the expansion and compression processes, so that the flow velocity distribution at the outlet is more uniform, and the torch is more stable during combustion.
In the present embodiment, the buffer chamber 27 has a support column 20 therein, and the support column 20 is used for connecting two corresponding annular recesses 26.
In practical use, the two side walls of the first annular groove 21 may also have two annular recesses 26 arranged opposite to each other, and the two annular recesses 26 of the first annular groove 14 form a buffer chamber 27.
In practice, the two side walls of the second annular groove 22 also have two annular recesses 26 arranged opposite each other, the two annular recesses 26 of the second annular groove 15 forming a buffer chamber 27.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (9)
1. A torch for an optical fiber preform, wherein the torch is a metal torch, the torch comprising:
the gas burner comprises a burner body, wherein the burner body sequentially comprises a central channel, an internal combustion gas channel and a combustible gas channel from inside to outside; the central channel comprises a circular groove arranged at the mounting end and a central hole arranged at the nozzle end and communicated with the circular groove, the inner diameter of the central hole is smaller than that of the circular groove, and internal threads are arranged in the circular groove; the inner combustion assisting gas channel comprises a first annular groove arranged at the mounting end and a plurality of first air outlet holes arranged at the nozzle end and communicated with the first annular groove, the first air outlet holes are uniformly distributed around the axis of the central hole, and two side walls of the first annular groove are provided with internal threads; the combustible gas channel comprises a second annular groove arranged at the mounting end and a plurality of second air outlet holes which are arranged at the nozzle end and communicated with the second annular groove, the second air outlet holes are uniformly distributed around the axis of the central hole, and two side walls of the second annular groove are provided with internal threads; the first annular groove is positioned on the inner side of the second annular groove, and the circular groove is positioned on the inner side of the first annular groove;
the gas isolating pipe comprises an open end and a closed end, the outer side wall of the open end of the gas isolating pipe is provided with an external thread, the closed end of the gas isolating pipe is provided with a through hole, the gas isolating pipe is matched and fixed with the internal thread of the circular groove through the external thread, the outer diameter of the central pipe is smaller than the inner diameter of the central hole, one end of the central pipe penetrates through the open end of the gas isolating pipe and then extends into the central hole, the other end of the central pipe penetrates through the through hole, and the corresponding outer side wall of the central pipe is in sealing fit with the through hole;
the inner combustion-supporting pipe is in threaded connection with two side walls of the first annular groove through threads;
one end face of the combustible pipe is provided with a second annular groove, threads are arranged on the inner side wall and the outer side wall of the combustible pipe, which correspond to the notch of the second annular groove, and the combustible pipe is in threaded connection with the two side walls of the second annular groove through the threads;
one end face of the outer combustion-supporting pipe is provided with a third annular groove, threads are arranged on the inner side wall and the outer side wall of the outer combustion-supporting pipe, which correspond to the notch of the third annular groove, and the inner side wall of the outer combustion-supporting pipe is matched and connected with external threads on the outer side wall of the blast lamp main body through the threads;
the outer combustion-supporting gas channel is formed by a space between the outer cover and the outer side wall of the blast lamp main body;
the inner side wall and the outer side wall of one side of the combustible tube and the inner combustion-supporting tube, which are adjacent to the mounting end of the main body of the blast burner, are provided with limiting rings, and the limiting rings are matched with the mounting end to realize limiting; the inner side wall and the outer side wall of one side, adjacent to the mounting end of the blast burner main body, of the outer combustion-supporting pipe are respectively provided with a limiting ring, the limiting rings at the inner side wall of the outer combustion-supporting pipe are matched with the mounting end to realize limiting, and the limiting rings at the outer side wall of the outer combustion-supporting pipe are matched with the end part of the outer cover to realize limiting.
2. A torch for an optical fiber preform according to claim 1, wherein an outer sidewall of a side of the torch body where the spouting end is located is a tapered outer sidewall, and the spouting end is a small diameter end; the outer cover is provided with a conical inner side wall matched with the conical outer side wall.
3. A torch for an optical fiber preform according to claim 1, wherein the material of the torch is stainless steel.
4. A torch for an optical fiber preform according to claim 1, wherein the shielding gas pipe, the inner burner pipe, the combustible pipe and the outer burner pipe have an inlet pipe at a side away from the torch body, and a space of the inlet pipe communicates with an inner space of the corresponding pipe.
5. A torch for an optical fiber preform according to claim 1, wherein a portion of the first annular groove of the inner burner tube adjacent to the installation end has a plurality of support pillars for connecting both side walls corresponding to the first annular groove; the part of the second annular groove of the combustible tube, which is adjacent to the mounting end, is provided with a plurality of supporting columns, and the supporting columns are used for connecting two corresponding side walls of the second annular groove; the part of the third annular groove of the outer combustion-supporting pipe, which is adjacent to the mounting end, is provided with a plurality of supporting columns, and the supporting columns are used for connecting two corresponding side walls of the third annular groove.
6. The torch for an optical fiber preform of claim 1, wherein both sidewalls of the first annular groove have two annular recesses oppositely disposed, and the two annular recesses of the first annular groove form a buffer chamber.
7. The torch for an optical fiber preform of claim 1, wherein both sidewalls of the second annular groove have two annular recesses oppositely disposed, and the two annular recesses of the second annular groove form a buffer chamber.
8. The torch for an optical fiber preform of claim 1, wherein both sidewalls of the third annular groove have two annular recesses oppositely disposed, and the two annular recesses of the third annular groove form a buffer chamber.
9. A torch for an optical fiber preform according to claim 6, 7 or 8, wherein the buffer chamber has a support column therein for connecting the corresponding two annular recesses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299235.8A CN109912192B (en) | 2017-02-24 | 2017-02-24 | Torch for optical fiber preform |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299235.8A CN109912192B (en) | 2017-02-24 | 2017-02-24 | Torch for optical fiber preform |
| CN201710104133.7A CN106904822B (en) | 2017-02-24 | 2017-02-24 | The manufacturing method of preform |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710104133.7A Division CN106904822B (en) | 2017-02-24 | 2017-02-24 | The manufacturing method of preform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109912192A CN109912192A (en) | 2019-06-21 |
| CN109912192B true CN109912192B (en) | 2021-08-06 |
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| CN201710104133.7A Active CN106904822B (en) | 2017-02-24 | 2017-02-24 | The manufacturing method of preform |
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| CN108996901B (en) * | 2018-08-08 | 2021-11-02 | 杭州富通通信技术股份有限公司 | Method for manufacturing optical fiber |
| CN110342809B (en) * | 2019-07-29 | 2021-09-21 | 富通集团有限公司 | Prefabricated rod manufacturing process |
| CN110372200A (en) * | 2019-08-12 | 2019-10-25 | 杭州永特信息技术有限公司 | A kind of detachable blowtorch preparing preform for VAD method |
| CN112939448B (en) * | 2021-04-29 | 2022-12-13 | 浙江富通光纤技术有限公司 | Machining method of core rod |
| CN113248133B (en) * | 2021-05-31 | 2021-09-17 | 中天科技精密材料有限公司 | Optical fiber preform manufacturing equipment and manufacturing method of optical fiber preform using same |
| CN113354274B (en) * | 2021-06-29 | 2022-08-30 | 杭州富通通信技术股份有限公司 | Method for processing prefabricated rod |
| 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 (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465708A (en) * | 1983-05-31 | 1984-08-14 | At&T Technologies, Inc. | Technique for fabricating single mode lightguide soot-forms |
| US5599371A (en) * | 1994-12-30 | 1997-02-04 | Corning Incorporated | Method of using precision burners for oxidizing halide-free, silicon-containing compounds |
| CN1330753A (en) * | 1998-12-17 | 2002-01-09 | 康宁股份有限公司 | Burner manifold apparatus for use in chemical vapor deposition process |
| CN101965316A (en) * | 2008-02-27 | 2011-02-02 | 信越化学工业株式会社 | Burner for manufacturing porous glass base material |
| CN103011579A (en) * | 2012-12-27 | 2013-04-03 | 中天科技精密材料有限公司 | Online annealing device and online annealing method for large-size optical fiber preform rod |
| 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 |
| CN104163569A (en) * | 2013-05-15 | 2014-11-26 | 住友电气工业株式会社 | Method for manufacturing soot glass deposit body and burner for manufacturing soot glass deposit body |
| CN204474531U (en) * | 2015-02-02 | 2015-07-15 | 浙江富通光纤技术有限公司 | A kind of preform blowtorch |
| JP2015160774A (en) * | 2014-02-27 | 2015-09-07 | 信越化学工業株式会社 | Burner for manufacturing porous glass parent material |
| CN105330140A (en) * | 2015-11-30 | 2016-02-17 | 中天科技精密材料有限公司 | Preparing method of high purity quartz sleeve for large-size optical fiber preform |
| CN106430944A (en) * | 2016-11-08 | 2017-02-22 | 长飞光纤光缆股份有限公司 | Blowtorch assembly applied to optical fiber preform deposition with OVD (outside vapor deposition) process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3124581B2 (en) * | 1991-08-07 | 2001-01-15 | 東芝セラミックス株式会社 | Burner device for quartz glass synthesis |
| JP3543537B2 (en) * | 1996-05-09 | 2004-07-14 | 住友電気工業株式会社 | Method for synthesizing glass fine particles and focus burner therefor |
| KR100606041B1 (en) * | 2005-02-04 | 2006-07-28 | 삼성전자주식회사 | Fabrication burner for optical fiber preform |
| US20070262169A1 (en) * | 2006-05-01 | 2007-11-15 | Chia Chung Precision Industrial Co., Ltd. | Spray head structure of a spray gun |
| CN102049359B (en) * | 2011-01-04 | 2012-12-26 | 中国恩菲工程技术有限公司 | Spray gun and multi-fluid spray gun device provided with same |
| CN105384334B (en) * | 2015-11-30 | 2018-10-12 | 中天科技精密材料有限公司 | A kind of large-scale optical fiber prefabricating stick manufacture blowtorch and its large-scale optical fiber prefabricating stick manufacturing method |
-
2017
- 2017-02-24 CN CN201910298882.7A patent/CN109928612B/en active Active
- 2017-02-24 CN CN201910299235.8A patent/CN109912192B/en active Active
- 2017-02-24 CN CN201710104133.7A patent/CN106904822B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465708A (en) * | 1983-05-31 | 1984-08-14 | At&T Technologies, Inc. | Technique for fabricating single mode lightguide soot-forms |
| US5599371A (en) * | 1994-12-30 | 1997-02-04 | Corning Incorporated | Method of using precision burners for oxidizing halide-free, silicon-containing compounds |
| CN1330753A (en) * | 1998-12-17 | 2002-01-09 | 康宁股份有限公司 | Burner manifold apparatus for use in chemical vapor deposition process |
| CN101965316A (en) * | 2008-02-27 | 2011-02-02 | 信越化学工业株式会社 | Burner for manufacturing porous glass base material |
| 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 |
| CN103011579A (en) * | 2012-12-27 | 2013-04-03 | 中天科技精密材料有限公司 | Online annealing device and online annealing method for large-size optical fiber preform rod |
| CN104163569A (en) * | 2013-05-15 | 2014-11-26 | 住友电气工业株式会社 | Method for manufacturing soot glass deposit body and burner for manufacturing soot glass deposit body |
| JP2015160774A (en) * | 2014-02-27 | 2015-09-07 | 信越化学工業株式会社 | Burner for manufacturing porous glass parent material |
| CN204474531U (en) * | 2015-02-02 | 2015-07-15 | 浙江富通光纤技术有限公司 | A kind of preform blowtorch |
| CN105330140A (en) * | 2015-11-30 | 2016-02-17 | 中天科技精密材料有限公司 | Preparing method of high purity quartz sleeve for large-size optical fiber preform |
| CN106430944A (en) * | 2016-11-08 | 2017-02-22 | 长飞光纤光缆股份有限公司 | Blowtorch assembly applied to optical fiber preform deposition with OVD (outside vapor deposition) process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106904822B (en) | 2019-05-24 |
| CN109912192A (en) | 2019-06-21 |
| CN109928612A (en) | 2019-06-25 |
| CN109928612B (en) | 2021-08-06 |
| CN106904822A (en) | 2017-06-30 |
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