CN201890844U - Air seal device of fiber drawing furnace for drawing diameter step index optical fiber preform - Google Patents
Air seal device of fiber drawing furnace for drawing diameter step index optical fiber preform Download PDFInfo
- Publication number
- CN201890844U CN201890844U CN 201020276774 CN201020276774U CN201890844U CN 201890844 U CN201890844 U CN 201890844U CN 201020276774 CN201020276774 CN 201020276774 CN 201020276774 U CN201020276774 U CN 201020276774U CN 201890844 U CN201890844 U CN 201890844U
- Authority
- CN
- China
- Prior art keywords
- cover
- tube
- optical fiber
- air seal
- tail pipe
- 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.)
- Expired - Fee Related
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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
- C03B37/029—Furnaces therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/80—Means for sealing the preform entry or upper end of the furnace
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
An air seal device of a fiber drawing furnace for drawing a diameter step index optical fiber preform comprises a drum which is arranged above a furnace mouth and is closely connected with the furnace mouth, wherein the upper end face and the lower end face of the drum are respectively provided with holes with same size as that of the optical fiber preform so as to be used for the optical fiber preform to pass through during drawing; one side of the drum is provided with an air inlet; a cover is arranged above the drum; the upper end face of the cover is provided with a hole with the same size as that of a tail pipe; and a cavity from below the upper end face of the cover is a hole with the same size as that of the optical fiber preform. By using the air seal device of the fiber drawing furnace, the optical fiber preform with various diameter specifications can be butted with the tail pipe with smaller diameter for drawing uniformly, so that the cost of the tail pipe is saved, and the workload is reduced.
Description
Technical field
The utility model relates to the air seal set of a kind of device, especially fibre drawing furnace on the equipment of producing optical fiber.
Background technology
The air seal set of existing fibre drawing furnace is a kind of tube of being located at the fire door top and being right after with fire door, the upper and lower end face of tube respectively is provided with a size hole identical with optical wand that supplies preform (abbreviation optical wand) to pass through when wire drawing, one Side of tube is provided with inlet mouth, feed the tube internal cavity for rare gas element and form the sealing gland layer, cause the graphite piece oxidation in the air admission stove when preventing wire drawing and damage, normally carry out to guarantee wire drawing.Because essential butt joint tail pipe during the optical wand wire drawing, this air seal set only use under the identical situation of the diameter of the diameter of optical wand and tail pipe, could realize the purpose of sealing gland.Now,, reduce workload, generally with a kind of optical wand that docks the multiple diameter specification than the tail pipe of minor diameter in order to save the tail pipe cost.Like this, joint at tail pipe and optical wand produces the diameter sudden change, during wire drawing when the optical wand tail end enter air seal set the tube in after, because the boring ratio of the upper surface of air seal set is big than the tail pipe of minor diameter, the space appears between hole and tail pipe, air will enter in the air seal set, and then enters in the fiber drawing furnace, can't realize the sealing gland to fiber drawing furnace.
Summary of the invention
Deficiency for the air seal set that overcomes existing fibre drawing furnace, the utility model provides a kind of air seal set that is used for the fiber drawing furnace of diameter step index fiber prefabricated stick drawn wire, use this device, can under the tail pipe diameter situation littler, in whole drawing process, realize sealing gland to fibre drawing furnace than optical wand diameter, thereby can unify to dock when realizing the optical wand wire drawing to the multiple diameter specification with a kind of tail pipe than minor diameter, save the tail pipe cost, reduce workload.
The utility model provides a kind of air seal set that is used for the fiber drawing furnace of diameter step index fiber prefabricated stick drawn wire, comprise the tube of being located at the fire door top and being right after with fire door, the upper and lower end face of tube respectively is provided with a size hole identical with preform that supplies preform to pass through when wire drawing, one Side of tube is provided with inlet mouth, above tube, be provided with a cover, the upper surface of cover has a hole identical with tail pipe size, and the following cavity in the upper surface of cover is and the big or small identical hole of preform.
Further specify its beneficial effect below in conjunction with use of the present utility model.
When the utility model uses, earlier cover is taken off the tail pipe that is inserted in optical wand, make hole and tail pipe fit on the upper surface of cover, cavity and optical wand fit that the upper surface is following, then optical wand is put into the fiber drawing furnace wire drawing, at this moment, the inlet mouth from tube feeds the interior rare gas element of tube at tube internal cavity formation sealing gland layer.When the optical wand tail end descend gradually near air seal set the tube the upper surface and do not enter as yet the tube in the time, the lower surface of cover engages with the upper surface of tube, continue to leave the hole of upper surface of tube downwards when the optical wand tail end after, though the space occurs between the hole of the upper surface of tail pipe and tube, but cavity that cover and tube are communicated with remains sealing with extraneous, air can not enter, and the sealing gland layer that rare gas element forms still can be realized the sealing gland to fiber drawing furnace.Therefore, use the air seal set of the utility model, can unify to carry out wire drawing, save the tail pipe cost, reduce workload with the optical wand that a kind of tail pipe than minor diameter docks the multiple diameter specification as fiber drawing furnace.
Description of drawings
Fig. 1 is the synoptic diagram of cover of the present utility model when engaging tube as yet, and Fig. 2 is the synoptic diagram of cover of the present utility model when having engaged tin.
In Fig. 1, Fig. 2,1, tube, 2, cover, 3, inlet mouth, 4, tail pipe, 5, preform, 6, the cavity of tube, 7, fiber drawing furnace, 8, the cavity of cover.
Embodiment
With reference to Fig. 1, Fig. 2, the upper and lower end face of tube 1 of the present utility model respectively is provided with a size hole identical with optical wand that supplies preform to pass through when wire drawing, forms the cavity 6 of tube in tube 1, and a Side of tube 1 is provided with inlet mouth 3; The upper surface of cover 2 of the present utility model have one with the identical holes of tail pipe 4 size, the cavity 8 of the cover that the upper surface of cover 2 is following be and the big or small identical hole of preform.When the utility model uses, to cover 2 earlier and take off the tail pipe 4 that is inserted in optical wand 5, make hole and tail pipe 4 fits on cover 2 the upper surface, the cavity 8 and optical wand 5 fits of the cover that the upper surface is following, then optical wand 5 is put into fiber drawing furnace 7 wire drawings, the sealing gland layer that the rare gas element that feeds tube 1 by inlet mouth 3 in whole drawing process can form all the time can be realized the sealing gland to fiber drawing furnace 7.Tube 1 of the present utility model and cover 2 all can adopt resistant to elevated temperatures quartz material.
Claims (1)
1. air seal set that is used for the fiber drawing furnace of diameter step index fiber prefabricated stick drawn wire, comprise the tube of being located at the fire door top and being right after with fire door, the upper and lower end face of tube respectively is provided with a size hole identical with preform that supplies preform to pass through when wire drawing, one Side of tube is provided with inlet mouth, it is characterized in that above tube, being provided with a cover, the upper surface of cover has a hole identical with tail pipe size, and the following cavity in the upper surface of cover is and the big or small identical hole of preform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020276774 CN201890844U (en) | 2010-07-30 | 2010-07-30 | Air seal device of fiber drawing furnace for drawing diameter step index optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020276774 CN201890844U (en) | 2010-07-30 | 2010-07-30 | Air seal device of fiber drawing furnace for drawing diameter step index optical fiber preform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201890844U true CN201890844U (en) | 2011-07-06 |
Family
ID=44220321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020276774 Expired - Fee Related CN201890844U (en) | 2010-07-30 | 2010-07-30 | Air seal device of fiber drawing furnace for drawing diameter step index optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201890844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
| CN109689583A (en) * | 2016-09-07 | 2019-04-26 | 住友电气工业株式会社 | Optical fiber drawing method and wire-drawing frame |
-
2010
- 2010-07-30 CN CN 201020276774 patent/CN201890844U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109689583A (en) * | 2016-09-07 | 2019-04-26 | 住友电气工业株式会社 | Optical fiber drawing method and wire-drawing frame |
| CN109689583B (en) * | 2016-09-07 | 2022-07-19 | 住友电气工业株式会社 | Optical fiber drawing method and drawing apparatus |
| CN107235625A (en) * | 2017-05-05 | 2017-10-10 | 浙江联飞光纤光缆有限公司 | A kind of prefabricated rods attemperator for fibre drawing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU HENGTONG PHOTOELECTRIC CO., LTD. Effective date: 20130301 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130301 Address after: 215200 No. 100 Heng Road, Wujiang Economic Development Zone, Jiangsu, China Patentee after: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu Patentee after: Jiangsu Hengtong Photoelectric Co., Ltd. Address before: 215200 No. 100 Heng Road, Wujiang Economic Development Zone, Jiangsu, China Patentee before: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu |
|
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: JIANGSU HENGTONG PHOTOELECTRIC CO., LTD. Effective date: 20140403 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140403 Address after: 215200, No. 100, Heng Tong Road, Wujiang District, Jiangsu, Suzhou Patentee after: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu Address before: 215200 No. 100 Heng Road, Wujiang Economic Development Zone, Jiangsu, China Patentee before: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu Patentee before: Jiangsu Hengtong Photoelectric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |