CN111056741B - Sealing device and sealing method for tail handle of optical fiber preform - Google Patents
Sealing device and sealing method for tail handle of optical fiber preform Download PDFInfo
- Publication number
- CN111056741B CN111056741B CN202010018643.4A CN202010018643A CN111056741B CN 111056741 B CN111056741 B CN 111056741B CN 202010018643 A CN202010018643 A CN 202010018643A CN 111056741 B CN111056741 B CN 111056741B
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- China
- Prior art keywords
- quartz
- preform
- tail
- sleeve
- tail handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000010453 quartz Substances 0.000 claims abstract description 82
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 82
- 238000005491 wire drawing Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 210000001503 joint Anatomy 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
-
- 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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
Abstract
The invention provides a sealing device for a tail handle of an optical fiber preform, which comprises a quartz tail pipe fixed on a rod hanging platform, wherein the lower end of the quartz tail pipe is fixed with a tail handle part of the preform, and a quartz assembly for realizing sealing is sleeved in a reducing area of the tail handle of the preform. The sealing device for the tail handle of the optical fiber preform effectively reduces the pretreatment procedure of the preform, does not need to cut the original tail handle and then carry out rod hanging and wire drawing on the butt joint tail pipe, and reduces the production cost. Meanwhile, through reasonable structural design, the hidden production trouble brought by a larger reducing area at the tail part of the preform is avoided.
Description
Technical Field
The invention belongs to the technical field of optical fiber production and manufacturing, and particularly relates to a sealing device and a sealing method for a tail handle of an optical fiber preform.
Background
The optical fiber is formed by drawing a prefabricated rod through high-temperature heating, an original tail handle is generally reserved when the prefabricated rod leaves a factory, when the fact that the original tail handle is different in diameter-changing area length is considered, the prefabricated rod cannot achieve perfect sealing when entering a drawing furnace, the stability of air flow in the drawing furnace is affected, graphite parts of the drawing furnace are lost, some optical fiber production enterprises can cut off the original tail handle and the diameter-changing area of the original tail handle, then a quartz tail pipe is welded at the tail end of the optical fiber prefabricated rod, and the sealing of the drawing furnace is achieved by using a common quartz part. However, the process is complex and the production cost is high by adopting the mode of butt joint of tail pipes.
Disclosure of Invention
In view of the above, the present invention is directed to overcoming the defects in the prior art, and provides a sealing device and a sealing method for a tail handle of an optical fiber preform.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the sealing device for the tail handle of the optical fiber preform comprises a quartz tail pipe fixed on a hanging rod platform, wherein the lower end of the quartz tail pipe is fixed with the tail handle part of the preform, and a quartz assembly for realizing sealing is sleeved in a reducing area of the tail handle of the preform.
Further, the quartz assembly comprises a sleeve with a downward opening, a plurality of quartz rings are arranged in one end of the opening of the sleeve, and the sleeve is separated from the prefabricated rod by the quartz rings.
Further, the sleeve comprises a left valve part and a right valve part which are assembled and fixed.
Further, a hook is arranged on the right lobe part, and a hanging hole is arranged on the left lobe part corresponding to the hook of the right lobe part.
Further, the quartz ring comprises a sleeved ring and an assembling ring, the sleeved ring is of a whole ring structure, and the assembling ring is assembled by two semi-rings to form a ring structure.
Further, the quartz tail pipe is fixed on the hanging rod platform through a tail pipe chuck, and an upper groove for fixing the tail pipe chuck is formed in the upper end of the quartz tail pipe.
Further, the lower end of the quartz tail pipe is provided with a lower groove for fixing the tail handle of the prefabricated rod.
A sealing method of a tail handle of an optical fiber preform comprises the following steps:
the quartz tail pipe is fixed on the hanging rod platform through a tail pipe chuck;
fixing a tail handle of the prefabricated rod on a quartz tail pipe through a rod hanging hook;
sealing when the preform tail handle enters the wire drawing furnace is realized by arranging a quartz assembly, wherein the quartz assembly comprises a sleeve and a plurality of layers of quartz rings sleeved on the preform tail handle;
by adding a proper number of quartz rings, the sleeve is prevented from directly contacting the preform while the sleeve covers the reducing area of the preform.
Further, the outer diameter of the quartz assembly is matched with the diameter of the preform, and the error between the outer diameter and the diameter is within 3 mm.
Compared with the prior art, the invention has the following advantages:
(1) The sealing device for the tail handle of the optical fiber preform provided by the invention avoids the hidden production trouble brought by a larger diameter-changing area at the tail of the preform through reasonable structural design.
(2) Meanwhile, the pretreatment procedure of the prefabricated rod is effectively reduced, the tail pipe is spliced for rod hanging and wire drawing after the original tail handle is cut off, the production difficulty is reduced, and the cost is also reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a left-lobe portion of a sleeve according to an embodiment of the present invention;
FIG. 3 is a schematic view of the right part of the sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic view of a collar according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a half ring structure of a split ring according to an embodiment of the present invention.
Reference numerals illustrate:
1-a quartz tail pipe; 2-a sleeve; 3-sleeving rings; 4-left lobe portion; a 5-right lobe portion; 6, hooking; 7-hanging holes; 8-a tail pipe chuck; 9-a hanging rod platform; 10-lower grooves; 11-a bar hook; 12-preform; 13-caudal peduncles; 14-assembling rings.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The sealing device for the tail handle of the optical fiber preform, as shown in fig. 1 to 5, comprises a quartz tail pipe 1 fixed on a hanging rod platform, wherein the lower end of the quartz tail pipe is generally hung on the tail handle 13 part of a preform 12 through a hanging rod hook 11, the preform is usually made of doped materials mainly comprising quartz, and the tail handle is made of quartz. And a quartz assembly for realizing sealing is sleeved in the reducing area of the tail handle of the preform. The sealing device provided by the invention achieves sealing when the tail handle of the preform enters the wire drawing furnace through the quartz assembly of the reducing area of the tail handle, ensures the stability of air flow in the wire drawing furnace, can avoid oxidation of blow-by gas of the wire drawing furnace caused by the larger reducing area of the tail handle of the preform, and reduces the loss of graphite parts of the wire drawing furnace, thereby improving the utilization rate of raw materials and reducing the production cost of optical fibers.
During assembly, the quartz tail pipe is suspended on the hanging rod platform through the tail pipe chuck, then the quartz circular ring is sleeved on the tail handle of the prefabricated rod and falls into the reducing area of the tail part of the prefabricated rod, and the prefabricated rod is placed into the lower groove of the quartz tail pipe through the hanging rod hook.
And a quartz semicircular ring (two semicircular rings are combined) is added on the quartz circular ring, so that the lower edges of the left valve part and the right valve part of the sleeve are not contacted with the prefabricated rod, and finally the left valve part and the right valve part are combined and placed on the quartz circular ring. The sealing device has high reliability, good sealing performance and simple process.
The specific structure and composition are as follows:
the quartz assembly comprises a sleeve 2 with a downward opening, wherein a plurality of quartz rings are arranged in one end of the opening of the sleeve, and the quartz rings are used for separating the sleeve from the prefabricated rod. The sleeve, quartz tail tube, preform and quartz rings are preferably coaxially arranged.
In an alternative embodiment, the quartz ring comprises a sleeving ring 3 and an assembling ring 14, the sleeving ring is of a whole ring structure, and the assembling ring is assembled by two semi-rings to form a ring structure. Before the prefabricated rod is hung on the quartz tail pipe, the required number of sleeving rings (whole rings) can be sleeved on the tail handle of the prefabricated rod according to the requirement, or a plurality of groups of assembling rings (semi-rings) can be simultaneously arranged, and then the tail handle part is hung on the lower part of the quartz tail pipe through a hanging rod.
When the sleeve is assembled, the number of layers of the assembled rings (semi-rings) can be increased or decreased according to the requirement, and the sleeve is properly adjusted on the principle that the sleeve is not contacted with the prefabricated rod. Adopt the quartz ring to be the pin-connected panel structure of semi-ring, can make things convenient for the operation behind the hanging stick. The number of the quartz rings and the quartz semi-rings is determined by the length of the diameter-changing area of the tail handle, and the quartz semi-rings mainly have the effect of preventing the quartz sleeve and the lower edge of the quartz sleeve from being connected with the prefabricated rod in a melting way in a wire drawing furnace.
It should be noted that the assembly ring is generally arranged at the lower end of the sleeve ring (at least the uppermost end of the sleeve ring is sleeved with the sleeve ring), and the sleeve ring is utilized to compress the assembly ring at the lower side of the sleeve ring, so that the assembly ring is prevented from falling off, and when the quartz ring is highly suitable, the assembly sleeve is assembled to complete the assembly of the sealing device structure. The sleeve covers the reducing area of the tail handle of the preform, thereby achieving the sealing effect when the tail rod of the preform enters the wire drawing furnace.
The sleeve comprises a left valve part 4 and a right valve part 5 which are assembled and fixed. In an alternative embodiment, the right lobe portion is provided with a hook 6, the left lobe portion is provided with a hanging hole 7 corresponding to the hook of the right lobe portion, the hook of the right lobe portion is hung into the hanging hole of the left lobe portion, and the two lobe structure can be assembled into the sleeve, so that the operation is convenient, the implementation is convenient, and the installation of the inner quartz ring (assembly ring) is also convenient because the sleeve is an assembled structure.
As a specific embodiment, the quartz tail pipe may be fixed on the rod hanging platform 9 through the tail pipe chuck 8, and an upper groove for fixing the tail pipe chuck is provided at the upper end of the quartz tail pipe, and it should be noted that, those skilled in the art may also use other structural forms in the prior art to fix the quartz tail pipe on the rod hanging platform, so long as the fixing effect can be achieved, so that redundant descriptions are not repeated.
Similarly, the lower end of the quartz tail pipe is provided with a lower groove 10 for fixing the tail handle of the preform. The tail handle part of the preform can be fixed in the lower groove at the lower part of the quartz tail pipe through a hanging rod hook, and of course, the skilled person can adopt other structural forms in the prior art to fix, so long as the fixing and hanging of the preform are realized.
A sealing method of a tail handle of an optical fiber preform comprises the following steps:
the quartz tail pipe is fixed on the hanging rod platform through a tail pipe chuck;
fixing a tail handle of the prefabricated rod on a quartz tail pipe through a rod hanging hook;
sealing when the preform tail handle enters the wire drawing furnace is realized by arranging a quartz assembly, wherein the quartz assembly comprises a sleeve and a plurality of layers of quartz rings sleeved on the preform tail handle;
by adding a proper number of quartz rings, the sleeve is prevented from directly contacting the preform while the sleeve covers the reducing area of the preform.
In the device and the method, the outer diameter of the quartz assembly is matched with the diameter of the preform, and the error between the outer diameter and the diameter is within 3 mm. The diameter between the quartz assembly and the prefabricated rod has small change, so that the stable air flow in the wire drawing furnace is ensured.
The sealing device for the tail handle of the optical fiber preform provided by the invention avoids the hidden production trouble brought by a larger diameter-changing area at the tail of the preform through reasonable structural design. Meanwhile, the pretreatment procedure of the prefabricated rod is effectively reduced, the tail pipe is spliced for rod hanging and wire drawing after the original tail handle is cut off, the production difficulty is reduced, and the cost is also reduced.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a sealing device of optical fiber perform tail handle which characterized in that: the device comprises a quartz tail pipe fixed on a hanging rod platform, wherein the lower end of the quartz tail pipe is fixed with a tail handle part of a preform, and a quartz assembly for realizing sealing is sleeved in a reducing area of the tail handle of the preform; the quartz assembly comprises a sleeve with a downward opening, wherein a plurality of quartz rings are arranged in one end of the opening of the sleeve, and the sleeve is separated from the preform rod by the quartz rings; the sleeve comprises a left valve part and a right valve part which are assembled and fixed; the quartz ring comprises a sleeved ring and an assembled ring, the sleeved ring is of a whole ring structure, the assembled ring is assembled by two semi-rings to form a ring structure, a sleeve is used for covering a diameter-changing area of a tail handle of the preform, abrupt change of the tail diameter of the preform is avoided, stable air flow in a wire drawing furnace is ensured, the number of layers of the assembled ring is increased and decreased according to the requirement so as to adapt to the length of the tail handle of the preform, the sleeve is not contacted with the preform, the lower edge of the quartz sleeve is prevented from being connected with the preform in the wire drawing furnace in a fused mode, and the inner side of the sleeve is tightly pressed by the sleeved ring to fix the assembled ring at the lower side of the sleeve.
2. The sealing device for a tail shank of an optical fiber preform according to claim 1, wherein: the right flap part is provided with a hook, and the left flap part is provided with a hanging hole corresponding to the hook of the right flap part.
3. The sealing device for a tail shank of an optical fiber preform according to claim 1, wherein: the quartz tail pipe is fixed on the hanging rod platform through a tail pipe chuck, and an upper groove for fixing the tail pipe chuck is formed in the upper end of the quartz tail pipe.
4. A sealing device for a preform stem according to claim 1 or 3, wherein: the lower end of the quartz tail pipe is provided with a lower groove for fixing the tail handle of the prefabricated rod.
5. A sealing method of an optical fiber preform tail handle is characterized in that: the sealing device of the tail handle of the optical fiber preform rod is adopted in any one of 1 to 4,
the quartz tail pipe is fixed on the hanging rod platform through a tail pipe chuck;
fixing a tail handle of the prefabricated rod on a quartz tail pipe through a rod hanging hook;
sealing when the preform tail handle enters the wire drawing furnace is realized by arranging a quartz assembly, wherein the quartz assembly comprises a sleeve and a plurality of layers of quartz rings sleeved on the preform tail handle;
by adding a proper number of quartz rings, the sleeve is prevented from directly contacting the preform while the sleeve covers the reducing area of the preform.
6. The method for sealing a tail handle of an optical fiber preform according to claim 5, wherein: the outer diameter of the quartz assembly is matched with the diameter of the preform, and the error between the outer diameter and the diameter is within 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010018643.4A CN111056741B (en) | 2020-01-08 | 2020-01-08 | Sealing device and sealing method for tail handle of optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010018643.4A CN111056741B (en) | 2020-01-08 | 2020-01-08 | Sealing device and sealing method for tail handle of optical fiber preform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111056741A CN111056741A (en) | 2020-04-24 |
| CN111056741B true CN111056741B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010018643.4A Active CN111056741B (en) | 2020-01-08 | 2020-01-08 | Sealing device and sealing method for tail handle of optical fiber preform |
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| Country | Link |
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| CN (1) | CN111056741B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106810065A (en) * | 2017-02-07 | 2017-06-09 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device and automatic wiredrawing method |
| CN206599520U (en) * | 2017-02-07 | 2017-10-31 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device |
| CN208440520U (en) * | 2018-05-31 | 2019-01-29 | 江苏永鼎光纤科技有限公司 | A kind of T shape glass sleeve applied to variable diameter caudal peduncle preform |
| CN209412080U (en) * | 2018-12-27 | 2019-09-20 | 通鼎互联信息股份有限公司 | A kind of sealing device suitable for original caudal peduncle wire drawing |
| CN212102583U (en) * | 2020-01-08 | 2020-12-08 | 通鼎互联信息股份有限公司 | Sealing device of optical fiber perform tail handle |
-
2020
- 2020-01-08 CN CN202010018643.4A patent/CN111056741B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106810065A (en) * | 2017-02-07 | 2017-06-09 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device and automatic wiredrawing method |
| CN206599520U (en) * | 2017-02-07 | 2017-10-31 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device |
| CN208440520U (en) * | 2018-05-31 | 2019-01-29 | 江苏永鼎光纤科技有限公司 | A kind of T shape glass sleeve applied to variable diameter caudal peduncle preform |
| CN209412080U (en) * | 2018-12-27 | 2019-09-20 | 通鼎互联信息股份有限公司 | A kind of sealing device suitable for original caudal peduncle wire drawing |
| CN212102583U (en) * | 2020-01-08 | 2020-12-08 | 通鼎互联信息股份有限公司 | Sealing device of optical fiber perform tail handle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111056741A (en) | 2020-04-24 |
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