CN206680383U - The blowtorch of preform - Google Patents
The blowtorch of preform Download PDFInfo
- Publication number
- CN206680383U CN206680383U CN201720400168.0U CN201720400168U CN206680383U CN 206680383 U CN206680383 U CN 206680383U CN 201720400168 U CN201720400168 U CN 201720400168U CN 206680383 U CN206680383 U CN 206680383U
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- blowtorch
- wick
- venthole
- layer
- oxygen
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Abstract
This practicality newly provides a kind of blowtorch of preform, heating tape, the lamp body being connected with the wick, the flow distribution plate being connected with the lamp body and the burner head being connected with flow distribution plate that the blowtorch includes wick, heated outside the wick and for wick, the wick is three layers of concentric tube wick, and three layers of concentric tube wick are respectively equipped with first layer, the second layer and third layer from the inside to the outside.The wick of the new blowtorch of this practicality is in three layers of concentric tube-shaped, you can to meet that there is enough oxygen at raw material (such as OMCTS) center is that raw material fully reacts；This practicality, which is newly fundamentally solved in blowtorch center mother tube and oxygen mix production process, easily to be occurred open loop generation gel and produces wick and block and because the mutual line space design of concentric circles venthole is bad, venthole easily accumulates SiO2 the problem of causing air-hole blockage, it ensure that the stability of deposition process produces the prefabricated rods of high-quality, the outer O2 of increase makes blowtorch deposition flame profile aggregation not dissipate, and substantially increases the stability and raw material availability of torch flame.
Description
Technical field
This practicality newly belongs to the technical field of preform manufacture, more particularly to a kind of blowtorch of preform.
Background technology
In existing optical fiber preform producing, more using axial vapor deposition method (VAD) production plug, then outside
Portion's vapour deposition process (OVD) production outsourcing layer two-step method produces preform.Traditional OVD techniques use SiCl always4Make
To be converted mainly into the silicon-containing material of silica, using SiCl4For substantial amounts of HCl can be produced in raw material production process, it is necessary to
Substantial amounts of processing cost and high anticorrosion equipment are put into, and can also consume substantial amounts of water resource, halogen-free silicon-containing material replaces
For SiCl4Raw material can avoid disadvantage mentioned above so as to reduce preform production cost, if siloxanes is as replacement SiCl4It is former
The existing patent of material retouches art to it.
Research is found, uses siloxanes, particularly octamethylcy-clotetrasiloxane (OMCTS) used in silica is produced
Blowtorch and using SiCl4Had differences for the blowtorch that raw material uses because institute's reaction principle is respectively to hydrolyze and aoxidize.The U.S. is special
The blowtorch that the disclosure of profit 5599371 is sent out a kind of for the oxidation reaction of OMCTS raw materials, the blowtorch center mother tube and oxygen mix life
During production easily occur open loop produce gel and make wick produce blocking, another problem be the mutual line space design of venthole not
Good, venthole easily accumulates SiO2Air-hole blockage is caused, above-mentioned two problems can cause the SiO of production2Cigarette ash rod quality is different
Often.
Therefore it is necessary to design a kind of new blowtorch.
Utility model content
The new purpose of this practicality is to provide the prefabricated rods that a kind of stability that ensure that deposition process produces high-quality
Preform blowtorch.
This practicality newly provides a kind of blowtorch of preform, and the blowtorch includes wick, outside the wick and is
Heating tape, the lamp body being connected with the wick, the flow distribution plate being connected with the lamp body and the spray being connected with flow distribution plate of wick heating
Lamp holder, the wick are three layers of concentric tube wick, three layers of concentric tube wick be respectively equipped with from the inside to the outside first layer, the second layer,
And third layer.
Preferably, it is passed through oxygen in the first layer；Octamethylcy-clotetrasiloxane and nitrogen are passed through in the second layer；Institute
State third layer and be passed through separation gas.
Preferably, the separation gas is nitrogen.
Preferably, the flow that oxygen is passed through in the first layer is 2~7slpm；Prestox ring is passed through in the second layer
The flow of tetrasiloxane is 10~20g/min, and the flow of nitrogen is 5~15slpm；The flow that the third layer passes through nitrogen is
10~20slpm.
Preferably, the blowtorch also includes multiple first ventholes, multiple second ventholes, the Yi Jiduo that concentric circles is set
Individual 3rd venthole, wherein, multiple first ventholes are located in same circumference, and multiple second ventholes also are located at same circumference
Interior, multiple 3rd ventholes also are located in same circumference, and multiple first ventholes, multiple second ventholes and multiple
Three ventholes are sequentially set from inside to outside.
Preferably, the diameter of each first venthole, each second venthole and each 3rd venthole is D, phase
The spacing between spacing, two neighboring second venthole, two neighboring 3rd venthole between adjacent two the first ventholes it
Between spacing be S, wherein, the relation between S and D is：0.3≤S/D≤0.9.
Preferably, reaction oxygen is passed through in first venthole to burner head, be passed through in the second venthole natural gas and
For oxygen to burner head, the 3rd venthole is interior to pass through oxygen to burner head.
Preferably, the flow that oxygen is passed through in first venthole is 15~30slpm, and day is passed through in the second venthole
The flow of right gas is 10~30slpm, the flow of oxygen is 7~24slpm；Be passed through in 3rd venthole the flow of oxygen for 5~
15slpm。
Preferably, the blowtorch is arranged in covering blowtorch position, and blowtorch includes sandwich layer blowtorch and covering blowtorch.
The wick of the new blowtorch of this practicality is in three layers of concentric tube-shaped, you can with meet raw material (such as OMCTS) center have it is enough
Oxygen is that raw material fully reacts；Burner head concentric circles outlet aperture hole interval S and hole diameter D meet that 0.3≤S/D≤0.9 can
Making blowtorch head surface, which increase the quality that the stability of deposition improves product without dust stratification；The new blowtorch of this practicality is additionally provided with logical
Enter the 3rd venthole of oxygen, oxygen keeps flame to have more preferable shape, improves the stability of deposition；This practicality is newly from basic
On solve in blowtorch center mother tube and oxygen mix production process and easily to occur that open loop produces gel and to produce wick stifled
Plug and because the mutual line space design of concentric circles venthole is bad, venthole easily accumulates SiO2 the problem of causing air-hole blockage, ensures
The stability of deposition process produces the prefabricated rods of high-quality, increases outer O2 and assembles blowtorch deposition flame profile and does not dissipate,
Substantially increase the stability and raw material availability of torch flame.
Brief description of the drawings
Fig. 1 show blowtorch matrix distribution optical fiber prefabricating loose media deposition apparatus design schematic diagram；
Fig. 2 is the upward view of the new blowtorch of this practicality；
Fig. 3 is the structural representation of the new blowtorch first embodiment of this practicality；
The structural representation of the new blowtorch second embodiment of this practicality of Fig. 4.
Embodiment
Newly the blowtorch for siloxanes production preform, the new blowtorch of this practicality use optical fiber prefabricating loose media for this practicality
Precipitation equipment, it is as shown in Figure 1 blowtorch matrix distribution optical fiber prefabricating loose media deposition apparatus design schematic diagram, precipitation equipment bag
Include：Casing 10,12 × 3 matrix distribution blowtorch 20 fixed in the casing 10, it is connected with 12 × 3 matrix distribution blowtorch 20
Blowtorch translation motor 30 and blowtorch translate 40,3 target rods 200 of microscope carrier, 3 connected corresponding with 3 target rods 200 draw bar 60,
Draw 3 electric rotating machines 80, fixed of the corresponding connection of bar 60 with this 33 sensors 70 for drawing the corresponding connection of bar 60, with this 3
The lifting microscope carrier 90 of 3 electric rotating machines 80 and the lifting motor 100 being connected with the lifting microscope carrier 90.Draw bar 60 to be fixed on
Lift on microscope carrier 90；Sensor 70 is weight sensor；Through lifting microscope carrier 90, the end is fixedly connected for each one end for drawing bar 60
Corresponding sensor 70, the other end for each drawing bar 60 are fixedly connected with corresponding target rod 200.
By this optical fiber prefabricating loose media precipitation equipment, 12 × 3 matrix distribution blowtorch 20 are constantly by SiO2Deposit to target rod
On 200, while form 3 loose medias 50.
Wherein, the blowtorch positioned at first row is the first blowtorch 21, and the blowtorch positioned at second row is the second blowtorch 22, positioned at
The blowtorch of three rows is the 3rd blowtorch 23.
Optical fiber prefabricating loose media precipitation equipment uses 12 × 3 blowtorch matrix distributions to install the new blowtorch of this practicality to be deposited
Three loose medias 50 are produced, wherein, the S/D=0.5 of the first blowtorch 21, the S/D=0.8 of the second blowtorch 22, the 3rd blowtorch 23
S/D=1.2, blowtorch material are T6 aluminum alloy materials.
It is the structural representation of blowtorch first embodiment as shown in Figures 2 and 3, this practicality is not newly influenceing preform
On the premise of loose weight, each blowtorch include wick 7, positioned at the outside of wick 7 and heated for wick 7 heating tape 8, with
Lamp body 9, the flow distribution plate 10 being connected with the lamp body 9 and the burner head 11 being connected with flow distribution plate 10 of the wick 7 connection.
Wick 7 is three layers of concentric tube wick 7, and three layers of concentric tube wick 7 are outer to be heated by heating tape 8.
Three layers of concentric tube wick 7 are respectively equipped with first layer 1, the second layer 2 and third layer 3 from the inside to the outside.Wherein,
Oxygen (O2) is passed through in one layer 1, its flow is 2~7slpm, preferably 5slpm (standard liters per minute flow value)；The second layer
Octamethylcy-clotetrasiloxane (OMCTS, octamethylcyclotetrasiloxane) and nitrogen (N2), OMCTS are passed through in 2
For 10~20g/min, preferably 20g/min, the flow of nitrogen is 5~15slpm, preferably 8slpm；Third layer 3 is passed through isolation
Gas, in the present embodiment, separation gas N2, its flow is 10~20slpm, preferably 15slpm.
Wick 7 each leads into O2, OMCTS+N2 and separation gas (N2), oxygen (O2) and prestox ring from inside to outside
Tetrasiloxane (OMCTS, octamethylcyclotetrasiloxane) is isolated, and avoids OMCTS and O2 is mixed in blowtorch
And oxidation reaction occurs and blocks wick 7.
Blowtorch also includes multiple first ventholes 4 that concentric circles sets, multiple second ventholes 5 and the multiple 3rd gone out
Stomata 6, wherein, multiple first ventholes 4 are located in same circumference, and multiple second ventholes 5 also are located in same circumference, multiple
3rd venthole 6 also is located in same circumference, and multiple first ventholes 4, multiple second ventholes 5 and the multiple 3rd go out
Stomata 6 is sequentially set from inside to outside.
Wherein, reaction oxygen is passed through in the first venthole 4 to burner head 11, natural gas and oxygen are passed through in the second venthole 5
Gas passes through oxygen to burner head 11 to burner head 11 in the 3rd venthole 6.
The diameter of each first venthole 4, each second venthole 5 and each 3rd venthole 6 is D, and adjacent two
The spacing between spacing, two neighboring second venthole 5 between individual first venthole 4, between two neighboring 3rd venthole 6
Spacing be S, wherein, 0.3≤S/D≤0.9, so can ensure that do not occur in deposition process venthole easily accumulate SiO2 make
Into the situation of air-hole blockage, so as to ensure that the stability of deposition process produces the prefabricated rods of high-quality, and the 3rd venthole 6
Blowtorch deposition flame profile aggregation is not dissipated, substantially increase the stability and raw material availability of torch flame.
Each blowtorch flow is adjusted to average out to：O2 is passed through in first layer 1, its flow is 5slpm；It is passed through in the second layer 2
OMCTS+N2, its flow are 20g/min+8slpm；Isolation N2 is passed through in third layer 3, its flow is 15slpm；First venthole 4
Reaction O2 is inside passed through, its flow is 30slpm；Be passed through CH4+O2 in second venthole 5, its flow be respectively 20slpm and
16slpm；Outside O2 is passed through in 3rd venthole 6, its flow is 12slpm；Three layers of concentric tube 7 are heated to temperature by heating tape 8
190 DEG C, first row C1 row are observed in deposition process and second row C2 row torch flame is stable, its 11 each concentric circles of corresponding burner head
Outlet spilehole (no SiO2 attachments), second row C2 row torch flame is attached to SiO2 because of each concentric circles spilehole of blowtorch head surface
And become to dissipate, deposition velocity is slack-off, occurs superheating phenomenon in deposition process.Deposition checks first row C1 row, second after terminating
Arrange C2 row and the logical OMCTS+N2 mouths of pipe of the 3rd three layers of concentric tube of row C3 blowtorch are prefabricated without jelly, three loose medias of deposition process
Rod actual weight and corresponding blowtorch flow are adjusted without PID, the deposition major parameter such as table 1 through measurement loose media after deposition terminates
It is shown：
Table 1：The deposition major parameter of loose media
The structural representation of blowtorch second embodiment is illustrated in figure 4, the new blowtorch of this practicality is arranged on VAD ((vapor axials
Sedimentation)) covering blowtorch position, wherein, A is sandwich layer blowtorch, and B is covering blowtorch, and C is VAD loose medias.
Wherein, sandwich layer blowtorch A different layers each lead into hydrogen H2, oxygen O2, tetrachloro silicane SiCl4 and germanium tetrachloride
GeCl4, wherein, hydrogen H2 flow is 70slpm；Oxygen O2 flow is 35slpm；Tetrachloro silicane SiCl4 flow is
8slpm；Germanium tetrachloride GeCl4 flow is 0.04slpm.
Covering blowtorch B is made up of T6 aluminum alloy materials, its S/D=0.9.Covering blowtorch B wick is also three layers of concentric tube
Wick, three layers of concentric tube wick are respectively equipped with first layer 1, the second layer 2 and third layer 3 from the inside to the outside, wherein, first layer 1
Oxygen O2 is inside passed through, its flow is 7slpm；Be passed through in the second layer 2 octamethylcy-clotetrasiloxane (OMCTS,
Octamethylcyclotetrasiloxane)+nitrogen N 2, octamethylcy-clotetrasiloxane (OMCTS,
Octamethylcyclotetrasiloxane flow) is 20g/min, and the flow of nitrogen N 2 is 12slpm；In third layer 3
The nitrogen N 2 as separation gas is passed through, the flow of nitrogen N 2 is 20slpm.
Covering blowtorch B also includes multiple first ventholes 4, multiple second ventholes 5 and multiple that concentric circles is set
Three ventholes 6, wherein, reaction oxygen is passed through in the first venthole 4 to burner head, natural gas and oxygen are passed through in the second venthole 5
Gas is to burner head, by oxygen to burner head in the 3rd venthole 6, wherein, the flow that oxygen O2 is passed through in the first venthole 4 is
15~30slpm, preferably 25slpm, the flow that natural gas is passed through in the second venthole 5 is 10~30slpm, preferably
15slpm, the flow of oxygen are 7~24slpm, preferably 12slpm, and oxygen O is passed through in the 3rd venthole 62Flow for 5~
15slpm, preferably 10slpm.
Three layers of concentric tube are heated to 190 DEG C of temperature by heating tape 8, in deposition process each concentric circles outlet aperture of burner head without
The defects of SiO2 adheres to, and Soot prefabricated rods surface quality is without overheat.600 points of kinds of deposition terminate engineering, and deposition checks three after terminating
The socket of layer concentric tube wick 7 is without jelly, deposition results such as table 2 below：
Table 2：Deposition results
The wick of the new blowtorch of this practicality is in three layers of concentric tube-shaped, you can with meet raw material (such as OMCTS) center have it is enough
Oxygen makes raw material fully react；Burner head concentric circles outlet aperture hole interval S and hole diameter D meet that 0.3≤S/D≤0.9 can
Making blowtorch head surface, which increase the quality that the stability of deposition improves product without dust stratification；The new blowtorch of this practicality is additionally provided with logical
Enter the 3rd venthole of oxygen, oxygen keeps flame to have more preferable shape, improves the stability of deposition；This practicality is newly from basic
On solve in blowtorch center mother tube and oxygen mix production process and easily to occur that open loop produces gel and to produce wick stifled
Plug and because the mutual line space design of concentric circles venthole is bad, venthole easily accumulates SiO2 the problem of causing air-hole blockage, ensures
The stability of deposition process produces the prefabricated rods of high-quality, increases outer O2 and assembles blowtorch deposition flame profile and does not dissipate,
Substantially increase the stability and raw material availability of torch flame.
The new preferred embodiment of described in detail above practicality, but this practicality is newly not limited to above-mentioned embodiment
In detail, in the new range of the technology design of this practicality, technical scheme that can be new to this practicality carries out a variety of equivalent
Conversion, these equivalents belong to the new protection domain of this practicality.
Claims (9)
1. a kind of blowtorch of preform, it is characterised in that the blowtorch includes wick, outside the wick and be wick
The heating tape of heating, the lamp body being connected with the wick, the flow distribution plate being connected with the lamp body and the blowtorch being connected with flow distribution plate
Head, the wick are three layers of concentric tube wick, three layers of concentric tube wick be respectively equipped with from the inside to the outside first layer, the second layer, with
And third layer.
2. the blowtorch of preform according to claim 1, it is characterised in that：Oxygen is passed through in the first layer；Institute
State and octamethylcy-clotetrasiloxane and nitrogen are passed through in the second layer；The third layer is passed through separation gas.
3. the blowtorch of preform according to claim 2, it is characterised in that：The separation gas is nitrogen.
4. the blowtorch of preform according to claim 3, it is characterised in that：The stream of oxygen is passed through in the first layer
Measure as 2~7slpm；The flow that octamethylcy-clotetrasiloxane is passed through in the second layer is 10~20g/min, and the flow of nitrogen is
5~15slpm；The flow that the third layer passes through nitrogen is 10~20slpm.
5. the blowtorch of preform according to claim 1, it is characterised in that：The blowtorch also includes concentric circles and set
Multiple first ventholes, multiple second ventholes and multiple 3rd ventholes, wherein, multiple first ventholes are positioned at same
In one circumference, multiple second ventholes also are located in same circumference, and multiple 3rd ventholes also are located in same circumference, and multiple
First venthole, multiple second ventholes and multiple 3rd ventholes are sequentially set from inside to outside.
6. the blowtorch of preform according to claim 5, it is characterised in that：Each first venthole, each second
The diameter of venthole and each 3rd venthole is D, spacing between two neighboring first venthole, two neighboring
The spacing between spacing, two neighboring 3rd venthole between two ventholes is S, wherein, the relation between S and D is：
0.3≤S/D≤0.9。
7. according to the blowtorch of any described preforms of claim 5-6, it is characterised in that：Lead in first venthole
Enter to react oxygen to burner head, natural gas and oxygen are passed through in the second venthole to burner head, pass through oxygen in the 3rd venthole
To burner head.
8. the blowtorch of preform according to claim 7, it is characterised in that：Oxygen is passed through in first venthole
Flow be 15~30slpm, the flow that natural gas is passed through in the second venthole is 10~30slpm, the flow of oxygen be 7~
24slpm；The flow that oxygen is passed through in 3rd venthole is 5~15slpm.
9. the blowtorch of preform according to claim 1, it is characterised in that：The blowtorch is arranged on covering blowtorch position
In putting, blowtorch includes sandwich layer blowtorch and covering blowtorch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400168.0U CN206680383U (en) | 2017-04-17 | 2017-04-17 | The blowtorch of preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400168.0U CN206680383U (en) | 2017-04-17 | 2017-04-17 | The blowtorch of preform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206680383U true CN206680383U (en) | 2017-11-28 |
Family
ID=60402798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720400168.0U Withdrawn - After Issue CN206680383U (en) | 2017-04-17 | 2017-04-17 | The blowtorch of preform |
Country Status (1)
| Country | Link |
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| CN (1) | CN206680383U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056042A (en) * | 2017-04-17 | 2017-08-18 | 江苏亨通光导新材料有限公司 | The blowtorch of preform |
| CN107857470A (en) * | 2017-12-07 | 2018-03-30 | 长飞光纤光缆股份有限公司 | A kind of VAD prepares the blowtorch of large core fiber mother metal |
| CN112028467A (en) * | 2020-09-28 | 2020-12-04 | 青海中利光纤技术有限公司 | Cone sintering device in preparation of optical fiber preform powder body and working method |
-
2017
- 2017-04-17 CN CN201720400168.0U patent/CN206680383U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056042A (en) * | 2017-04-17 | 2017-08-18 | 江苏亨通光导新材料有限公司 | The blowtorch of preform |
| CN107056042B (en) * | 2017-04-17 | 2023-05-09 | 江苏亨通光导新材料有限公司 | Blowtorch of optical fiber preform |
| CN107857470A (en) * | 2017-12-07 | 2018-03-30 | 长飞光纤光缆股份有限公司 | A kind of VAD prepares the blowtorch of large core fiber mother metal |
| CN112028467A (en) * | 2020-09-28 | 2020-12-04 | 青海中利光纤技术有限公司 | Cone sintering device in preparation of optical fiber preform powder body and working method |
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Granted publication date: 20171128 Effective date of abandoning: 20230509 |