CN206279082U - A kind of many prefabricated rods preparation systems based on VAD techniques - Google Patents
A kind of many prefabricated rods preparation systems based on VAD techniques Download PDFInfo
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- CN206279082U CN206279082U CN201621241415.9U CN201621241415U CN206279082U CN 206279082 U CN206279082 U CN 206279082U CN 201621241415 U CN201621241415 U CN 201621241415U CN 206279082 U CN206279082 U CN 206279082U
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- Prior art keywords
- gun shot
- nozzle
- target
- target rod
- prefabricated rods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The utility model provides a kind of many prefabricated rods preparation systems based on VAD techniques, including deposition cavity volume, gun shot, core nozzle, covering nozzle and multiple target rods, core nozzle and covering nozzle are connected with the inside of gun shot, the pipeline of each raw material and fuel is connected with the inside of gun shot, target rod is driven by hoistable platform and lifted, the outside that is symmetricly set on gun shot of multiple target rods centered on gun shot, the center of each target rod is with the center of gun shot apart from all same, the line at each target rod center and gun shot center and reference axis angle at 45 °, multiple target rods are rotated in the case where each independent motor drives around respective axis, multiple target rods are arranged on hoistable platform.The utility model is realized being made while many rods, and the production efficiency of prefabricated rods at least improves 2 times；The various process parameters of whole preparation process carry out feedback loop control by PID controller, improve the external diameter of prefabricated rods parent and the distribution precision of refractive index.
Description
Technical field
The utility model belongs to optic fibre manufacturing technology field, and in particular to prepared by a kind of many prefabricated rods based on VAD techniques
System.
Background technology
Existing preform prepares VAD techniques, first passes through the starting compound (SiCl4, GeCl4) of high-purity
Hydrogen, oxygen flame spray gun, in flame gas phase reaction generation SiO2, GeO2 glass powder, from flame direction be ejected into one rotation
In target rod (alumina rod), it is allowed to be deposited in target rod.Target rod after deposition starting is lifted up, and remains at depositional plane
Certain position, whole reaction is carried out in a reservoir, by the constant stabilization to ensure flame being vented.It is finally many by what is be made
Hole matter mother metal is dehydrated in electric furnace, sinters transparent vitreous body into.The nozzle arrangements design of spray gun, material flow, extraction flow, fire
Flame temperature, condensate surface temperature and rotary speed, and the position etc. of lithosomic body end can all influence the outer of prefabricated rods parent
Footpath and the precision of index distribution.And the prefabricated rods production equipment of VAD techniques can only make a prefabricated rods simultaneously at present, produce
Efficiency is low.
The content of the invention
In order to solve the above technical problems, the utility model provides a kind of many prefabricated rods preparation systems based on VAD techniques,
Realize being made while many rods, the production efficiency of prefabricated rods at least improves 2 times；Meanwhile, the nozzle arrangements energy of optimizing structure design
Enough effective distinguish flame and raw material reaction separate, and limit the formation zone of flame, and sandwich layer condensate surface is ensured with this
Temperature, the refractive index of final stabilization prefabricated rods and the parent external diameter of prefabricated rods improve the quality of prefabricated rods.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：It is prepared by a kind of many prefabricated rods based on VAD techniques
System, including deposit cavity volume, target rod, hollow gun shot, core nozzle and the covering nozzle being arranged at depositing in cavity volume, institute
State core nozzle and covering nozzle to be connected with the inside of gun shot, the pipeline of each raw material and fuel connects with the inside of gun shot
Logical, the target rod drives lifting by a hoistable platform, the target rod under the driving of motor around own axis, it is described heavy
Inlet end and exhaust end are provided with product cavity volume, it is characterised in that：The target rod has the multiple for working independently, multiple target rods
The outside for being symmetricly set on gun shot centered on gun shot, the center of each target rod is equal with the distance at the center of gun shot
It is identical, line and the reference axis angle at 45 ° at each target rod center and gun shot center, multiple target rods are each only
Vertical motor is rotated under driving around respective axis, and multiple target rods are arranged on hoistable platform；
Its video camera and pyrometer for also including a PID controller and being arranged in deposition cavity volume, the PID controller
Control connection video camera, pyrometer；
The inlet end and outlet side are equipped with pressure sensor, air pump and air valve, on the pipeline of each raw material and fuel
Flow pump and Material valve are provided with, each pressure sensor, air pump, air valve, flow pump, Material valve and motor are all connected with PID controller
Form feedback.
In a preferred embodiment of the present utility model, further include that the target rod is four.
In a preferred embodiment of the present utility model, the gun shot is further included for cylindrical structure, it has
Upper section and lower section, the core nozzle are arranged on the lower section of gun shot, and the covering nozzle is arranged on the upper section of gun shot so that
Plug is deposited in the lower end of target rod, deposition of core layer outside deposition of the covering in target rod.
In a preferred embodiment of the present utility model, the section of the core nozzle is further included for circular configuration,
The core nozzle of circular configuration have four groups of spouts, the center nozzle being respectively sequentially distributed from inside to outside, inner shield spout, in
Between annular distance spout and external shield spout, the mixture of starting compound and oxygen sprays from center nozzle, and fuel gas is in oneself
Between spray in annular distance spout, be used to spray oxygen in inner shield spout and external shield spout.
In a preferred embodiment of the present utility model, the structure phase of the covering nozzle and core nozzle is further included
Together.
In a preferred embodiment of the present utility model, further include that the core nozzle has centered on gun shot
Symmetrically arranged four, the covering nozzle has upper the next two groups for setting, and every group is respectively provided with centered on the gun shot
Symmetrically arranged four.
In a preferred embodiment of the present utility model, the temperature for further including the target rod condensate surface is 1200
℃±50℃。
In a preferred embodiment of the present utility model, further include that it also includes a stationary fixture, the geometrical clamp
It is circular configuration to have, and which is provided with central through hole and multiple target rod fixing holes, and multiple target rod fixing holes are centered on central through hole
Be symmetrical arranged, the central through hole is used to pass through for gun shot, and each target rod is arranged on target rod fixing hole correspondingly
It is interior.
The beneficial effects of the utility model are:
One, a kind of many prefabricated rods preparation systems based on VAD techniques of the present utility model, realize many rod while systems
Make, the production efficiency of prefabricated rods at least improves 2 times；Meanwhile, the various process parameters of whole preparation process are carried out by PID controller
Feedback loop control, improves the external diameter of prefabricated rods parent and the distribution precision of refractive index；
Secondly, flame and raw material reaction can effectively distinguish and separated, and limited by the nozzle arrangements of optimizing structure design
The formation zone of flame, the temperature of sandwich layer condensate surface is ensured with this, the refractive index of final stabilization prefabricated rods and prefabricated rods
Parent external diameter, improves the quality of prefabricated rods.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment technology, embodiment technology will be retouched below
The accompanying drawing to be used needed for stating is briefly described, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the utility model preferred embodiment；
Fig. 2 is the structural representation of the utility model preferred embodiment stationary fixture；
The structural representation of the utility model preferred embodiment core nozzle on Fig. 3.
Wherein：2- deposition cavity volumes, 4- target rods, 6- gun shots, 8- core nozzles, 10- covering nozzles, 12-PID controllers,
Annular distance spout in the middle of 14- center nozzles, 16- inner shield spouts, 18-, 20- external shield spouts, 22- central through holes, 24- target rods are consolidated
Determine hole.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Embodiment
As shown in figure 1, a kind of many prefabricated rods preparation systems based on VAD techniques are disclosed in the present embodiment, including deposition
Cavity volume 2, the hollow gun shot 6 being arranged in deposition cavity volume 2, core nozzle 8, covering nozzle 10, multiple target rods 4 and PID
Controller 12.Inside of the pipeline of each raw material and fuel with gun shot 6 connects, and the core nozzle 8 and covering nozzle 10 are equal
Inside with gun shot 6 connects, and each raw material and fuel are ejected in the deposition internal combustion of cavity volume 2 from core nozzle 8 and covering nozzle 10
Burning forms flame.
The preferred target rod 4 of the utility model is four, and four target rods 4 are symmetricly set on spray centered on gun shot 6
The outside of barral of a gun 6, the center of each target rod 4 and the center of gun shot 6 apart from all same, each center of the target rod 4 and spray
The line at the center of barral of a gun 6 and reference axis angle (reference axis herein is XOY reference axis in Fig. 2) at 45 °, four target rods
Rotated around respective axis in the case where each independent motor drives, four target rods are arranged on hoistable platform, lifting is flat
Platform drives four target rods to rise simultaneously.The preparation system of such structure design can be realized being made while four prefabricated rods.When
So, according to actual needs, can also make simultaneously the six roots of sensation, eight even more many, greatly improve prefabricated rods preparation effect
Rate.
Further, video camera and pyrometer are provided with deposition cavity volume 2, the inlet end and outlet side are equipped with pressure biography
Flow pump and Material valve, each pressure sensor, air pump, gas are equipped with the pipeline of sensor, air pump and air valve, each raw material and fuel
Valve, flow pump, Material valve, motor, video camera and pyrometer are all connected with PID controller 12 and form feedback, whole preparation process
Various process parameters carry out feedback loop control by PID controller 12, improve the distribution of the external diameter and refractive index of prefabricated rods parent
Precision.
Further, the gun shot 6 is cylindrical structure, and it has upper section and lower section, and the core nozzle 8 is arranged on
The lower section of gun shot 6, the covering nozzle 10 is arranged on the upper section of gun shot 6, specifically, the core nozzle 8 has to spray
Symmetrically arranged four centered on barral of a gun 6, the covering nozzle 10 has upper the next two groups for setting, and every group is respectively provided with described
Symmetrically arranged four centered on gun shot 6, such structure causes that plug is deposited in the lower end of target rod, deposition of the covering in target rod
Sandwich layer outside deposition.
Used as further improvement of the utility model, such as Fig. 3, the section of the shown core nozzle 8 is circular configuration, circle
The core nozzle of shape structure have four groups of spouts, the center nozzle 14 being respectively sequentially distributed from inside to outside, inner shield spout 16,
Middle annular distance spout 18 and external shield spout 20, starting compound spray with the mixture of oxygen from center nozzle 14, fuel
Gas sprays 18 from middle annular distance spout, is used to spray oxygen in inner shield spout 16 and external shield spout 20.Middle ring
The fuel gas sprayed in the spout of hole form flame, and the phase feed compound sprayed in center nozzle 14 is mixed with oxygen
Compound produces oxidation reaction at the high temperatures of the flame, forms glass dust, is deposited on and plug is formed in target rod, covering nozzle 10 with
The structure of core nozzle 8 is identical, and the phase feed compound and the mixture of oxygen sprayed in its center nozzle 14 are in flame
Oxidation reaction is produced under high temperature, glass dust is formed, is attached to and surrounding layer is formed on plug, thus prepare to form prefabricated rods mother
Body.The oxygen sprayed in inner shield spout 16 separates flame with raw material reaction area, while its oxygen for spraying contributes to
The oxidation reaction of raw material is more complete；The oxygen that external shield spout 20 sprays is used to limit the formation zone of flame.Optimize structure above
The nozzle of design, while spraying of material is completed, can ensure the temperature of sandwich layer condensate surface, final stabilization prefabricated rods
The parent external diameter of refractive index and prefabricated rods, improves the quality of prefabricated rods.
By controlling the flow of each raw material and fuel and the nozzle arrangements of optimizing structure design so that target rod lithosomic body
The temperature on surface is 1200 DEG C ± 50 DEG C, the refractive index and parent external diameter of the moulding prefabricated rod of effective guarantee.
Target rod of the present utility model 4 is fixed by fitment, as shown in Fig. 2 the stationary fixture is circular configuration, its
It is provided with central through hole 22 and four target rod fixing holes 24, four symmetrically setting centered on central through hole 22 of target rod fixing hole 24
Put, the central through hole 22 is used to be passed through for gun shot 6, and each target rod 4 is arranged in target rod fixing hole 24 correspondingly.
Preparation system based on said structure, it carries out a kind of preparation process of many prefabricated rods and is：Install each target rod 4 simultaneously
It is placed in deposition cavity volume 2, each target rod 4 is rotated with certain speed under the driving of motor；
By SiCl4、GeCl4、O2The center nozzle 14 of core nozzle 8 is passed through, hydrogen and oxygen gas mixture is passed through core nozzle 8
Middle annular distance spout 18, by O2It is passed through the inner shield spout 16 and external shield spout 20 of core nozzle 8；And in deposition cavity volume 2
Inside light generation flame, phase feed SiCl4、GeCl4、O2Generation SiO is reacted in flame2、GeO2Dust, SiO2、GeO2Powder
Dirt is deposited on the end of target rod 4, forms sandwich layer；
By SiCl4、O2The center nozzle 14 of covering nozzle 10 is passed through, hydrogen and oxygen gas mixture is passed through in core nozzle 10
Between annular distance spout 18, by O2It is passed through the inner shield spout 16 and external shield spout 20 of core nozzle 10；And depositing point in cavity volume 2
Combustion produces flame, phase feed SiCl4、O2Generation SiO is reacted in flame2Dust, SiO2Dust is attached to sandwich layer periphery, shape
Into covering；
Four target rods 2 rise simultaneously under the drive of hoistable platform, and depositional plane remains at the lower end of target rod 2 so that
Position the carrying with hoistable platform that dust is completed in the lower end successive sedimentation of each target rod 2 into cylindrical mandrel, plug deposition
The upper section for rising arrival gun shot 6 deposits to form surrounding layer, once obtains four prefabricated rods.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where spirit or scope of the present utility model are not departed from.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of many prefabricated rods preparation systems based on VAD techniques, including deposition cavity volume, the target being arranged in deposition cavity volume
Rod, hollow gun shot, core nozzle and covering nozzle, the core nozzle and covering nozzle connect with the inside of gun shot
Logical, the pipeline of each raw material and fuel is connected with the inside of gun shot, and the target rod drives lifting by a hoistable platform, described
Target rod, around own axis, inlet end and exhaust end is provided with the deposition cavity volume under the driving of motor, it is characterised in that：
The target rod has the multiple for working independently, and multiple target rods are symmetricly set on the outer of gun shot centered on gun shot
Side, the center of each target rod and the center of gun shot apart from all same, the company at each target rod center and gun shot center
Line and reference axis angle at 45 °, multiple target rods are rotated in the case where each independent motor drives around respective axis, multiple
The target rod is arranged on hoistable platform；
Its video camera and pyrometer for also including a PID controller and being arranged in deposition cavity volume, the PID controller control
Connection video camera, pyrometer；
The inlet end and outlet side are equipped with pressure sensor, air pump and air valve, are equipped with the pipeline of each raw material and fuel
Flow pump and Material valve, each pressure sensor, air pump, air valve, flow pump, Material valve and motor are all connected with PID controller and are formed
Feedback.
2. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 1, it is characterised in that：The target
Rod is four.
3. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 1, it is characterised in that：The spray
Barral of a gun is cylindrical structure, and it has upper section and lower section, and the core nozzle is arranged on the lower section of gun shot, the covering nozzle
It is arranged on the upper section of gun shot so that plug is deposited in the lower end of target rod, deposition of core layer outside deposition of the covering in target rod.
4. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 1 or 3, it is characterised in that：It is described
The section of core nozzle is circular configuration, and the core nozzle of circular configuration has four groups of spouts, respectively divides successively from inside to outside
The center nozzle of cloth, inner shield spout, middle annular distance spout and external shield spout, the mixture of starting compound and oxygen is in
Sprayed in heart spout, fuel gas sprays from middle annular distance spout, be used to spray in inner shield spout and external shield spout
Oxygen.
5. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 4, it is characterised in that：The bag
Layer nozzle is identical with the structure of core nozzle.
6. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 3, it is characterised in that：The core
Portion's nozzle has symmetrically arranged four centered on gun shot, and the covering nozzle has upper the next two groups, every group for setting
It is respectively provided with symmetrically arranged four centered on the gun shot.
7. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 1, it is characterised in that：The target
The temperature of rod condensate surface is 1200 DEG C ± 50 DEG C.
8. a kind of many prefabricated rods preparation systems based on VAD techniques according to claim 1, it is characterised in that：It is also wrapped
A stationary fixture is included, the stationary fixture is circular configuration, which is provided with central through hole and multiple target rod fixing holes, multiple target rods
Fixing hole being symmetrical arranged centered on central through hole, the central through hole is used to be passed through for gun shot, and each target rod is one by one
It is corresponding to be arranged in target rod fixing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621241415.9U CN206279082U (en) | 2016-11-21 | 2016-11-21 | A kind of many prefabricated rods preparation systems based on VAD techniques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621241415.9U CN206279082U (en) | 2016-11-21 | 2016-11-21 | A kind of many prefabricated rods preparation systems based on VAD techniques |
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| Publication Number | Publication Date |
|---|---|
| CN206279082U true CN206279082U (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621241415.9U Expired - Fee Related CN206279082U (en) | 2016-11-21 | 2016-11-21 | A kind of many prefabricated rods preparation systems based on VAD techniques |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587591A (en) * | 2016-11-21 | 2017-04-26 | 江苏南方光纤科技有限公司 | Multiple preform rod preparation system based on VAD technology and preparation method thereof |
-
2016
- 2016-11-21 CN CN201621241415.9U patent/CN206279082U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587591A (en) * | 2016-11-21 | 2017-04-26 | 江苏南方光纤科技有限公司 | Multiple preform rod preparation system based on VAD technology and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20201121 |