CN103274593B - On-line cooling method using hydrogen in optical fiber drawing process - Google Patents
On-line cooling method using hydrogen in optical fiber drawing process Download PDFInfo
- Publication number
- CN103274593B CN103274593B CN201310153632.7A CN201310153632A CN103274593B CN 103274593 B CN103274593 B CN 103274593B CN 201310153632 A CN201310153632 A CN 201310153632A CN 103274593 B CN103274593 B CN 103274593B
- Authority
- CN
- China
- Prior art keywords
- cooling
- hydrogen
- optical fiber
- cooling tube
- air 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
Links
Abstract
An on-line cooling method using hydrogen in an optical fiber drawing process is disclosed by the invention, and comprises the following steps: an optical fiber coming out from a graphite furnace successively passes through a diameter gauge and a defect detector, and gets to a cooling pipe of a cooling device, and the drawing speed gradually rises; when the drawing speed reaches 300-500 mpm, a hydrogen recovery and purification device begins to work; when the drawing speed reaches 800 mpm, a hydrogen supplying device begins to work, hydrogen is filled into a gas cooling pipeline, and the optical fiber moves downward and drives the hydrogen to move downward, and the heat of the optical fiber surface is adsorbed by the hydrogen in the movement process; the hydrogen fully contacts the inner surface of the cooling pipe, and the heat is transferred to the cooling pipe; the heat adsorbed by the cooling pipe is taken away by a cooling water circulation device, and thus the whole optical fiber cooling process is achieved. The specific heat capacity of hydrogen employed by the on-line cooling method is higher than that of helium, and the cooling effect is better; and furtherly, hydrogen is a conventional gas and is convenient to supply, and thus the cost of manufactures is reduced.
Description
Technical field
The present invention relates to a kind of method of cooling, be specifically related to a kind of hydrogen that uses and carry out drawing optical fibers on-line cooling method.
Background technology
Along with the development of optical fiber technology; drawing speed of optical fiber is more and more faster; optical fiber from fiber drawing furnace out time temperature reach 1500 DEG C; generally be no more than for 1 second from fiber drawing furnace to application system; during optical fiber arrival coating die, temperature is also up to a few Baidu; effectively cannot apply protection to optical fiber, the stress of optical fiber in process of cooling cannot discharge the performance that direct coating can have a strong impact on optical fiber simultaneously.There are a good coating effect and excellent performance in order to ensure optical fiber, need to carry out pressures cooling to optical fiber, select the gas that a kind of specific heat capacity is large when usual optical fiber cools, be conducive to carrying out heat exchange fast.
Traditional cooling meeting Selection radio thermal capacitance is that the helium of 5.24KJ/kg.K cools, the specific heat capacity of helium is large compared with air, heat exchange is than very fast, but global helium resource mainly rests in U.S.'s hand, helium belongs to a kind of strategic resource, and price is more and more expensive, in order to better cooling optical fibers, the amount of helium used is increasing, and being produced into of optical fiber is uninevitable more and more higher.
Hydrogen specific heat capacity at present in conventional gas reaches 14.43KJ/kg.K, and almost reach 3 times of helium, not only cooling performance is ideal, and hydrogen is cheap, supply and convenience thereof.But hydrogen belongs to a kind of hazardous gas, in the scope that volume ratio is 4.0% ~ 74.2%, run into fire can blast, and therefore needs the recovery operation carrying out cooling hydrogen, away from the volume range that hydrogen is explosion caused.
US Patent No. 4761168 should be mentioned that a kind of inside adopts the cooling tube of concavo-convex chip architecture, and use helium to cool, consumption amount of helium is larger; Chinese patent CH1450009A is the patent that French Alcatel proposes, and describes the method adopting helium or other mixed gass slowly to carry out optical fiber cooling; The patent that Chinese patent CH200910031144.2 Shi Zhongtian Science and Technology Ltd. proposes, this patent adopts a cylindrical metal cooling tube to use helium to cool optical fiber.Several patent is all adopt helium gas cooling above, and relative cooling efficiency is low, and cost is high.
Summary of the invention
For the deficiency that prior art exists, the object of the invention is to provide the use hydrogen that a kind of cooling efficiency is high, cost is low and carries out drawing optical fibers on-line cooling method.
To achieve these goals, the present invention realizes by the following technical solutions:
The present invention includes following step:
(1) arrive the cooling tube of refrigerating unit successively through caliper, defect instrument from graphite furnace optical fiber out, drawing speed rises gradually;
(2) when drawing speed reaches 300-500mpm, hydrogen recovery purifying plant is started working;
(3) when drawing speed reaches 800mpm, hydrogen making-up air device is started working, and hydrogen is filled in cooling air pipe, and optical fiber moves downward and drives hydrogen to walk downwards, and in the process of motion, the temperature of optical fiber surface is by absorption of hydrogen; And hydrogen fully contacts with cooling tube internal surface, heat is delivered on cooling tube; Cooling tube absorb heat again cooled water circle device take away, namely achieve whole optical fiber process of cooling;
Refrigerating unit comprises cooling tube, the cooling air pipe coaxially arranged with cooling tube, the gas pipeline be connected with cooling air pipe, cooling water circulating device and the pump, hydrogen recovery purifying plant, hydrogen making-up air device and the gas flow control device that are successively set on gas pipeline; Tightness system is provided with between the two ends of cooling air pipe and cooling tube.
Above-mentioned cooling water circulating device comprises cooling water tank and the circulating water inlet be arranged on cooling tube and circulating water outlet pipe; The other end of circulating water inlet and circulating water outlet pipe is all connected with cooling water tank.
The outlet of above-mentioned cooling air pipe is connected with the entrance of gas pipeline; The outlet of gas pipeline is positioned at 1/3 place of cooling air pipe.
The hydrogen that the present invention adopts is larger than the specific heat capacity of helium, and therefore cooling performance is better; In addition, hydrogen is a kind of conventional gas, and supply is very convenient, cheap, reduces the cost of manufacturer.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
The technique means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
The present invention includes following step:
(1) arrive the cooling tube of refrigerating unit successively through caliper, defect instrument from graphite furnace optical fiber out, drawing speed rises gradually;
(2) when drawing speed reaches 300-500mpm, hydrogen recovery purifying plant is started working;
(3) when drawing speed reaches 800mpm, hydrogen making-up air device is started working, and hydrogen is filled in cooling air pipe, and optical fiber moves downward and drives hydrogen to walk downwards, and in the process of motion, the temperature of optical fiber surface is by absorption of hydrogen; And hydrogen fully contacts with cooling tube internal surface, heat is delivered on cooling tube; Cooling tube absorb heat again cooled water circle device take away, namely achieve whole optical fiber process of cooling.
See Fig. 1, refrigerating unit of the present invention comprise cooling tube 2, with cooling tube 2 coaxial arrange cooling air pipe 10, the gas pipeline 8 be connected with cooling air pipe 10, be arranged on the cooling water circulating device on cooling tube 2 and be successively set on pump, the hydrogen recovery purifying plant 5(existing apparatus on gas pipeline 8, repeat no more herein), hydrogen making-up air device 6(existing apparatus, repeat no more herein) and gas flow control device 7(existing apparatus, repeat no more herein).
Tightness system 4 is provided with between the two ends of cooling air pipe 10 and cooling tube 2.
Cooling water circulating device comprises cooling water tank (not shown in FIG.) and the circulating water inlet 3 be arranged on cooling tube 2 and circulating water outlet pipe 1, and the other end of circulating water inlet 3 and circulating water outlet pipe 1 is all connected with cooling water tank.The object of cooling water circulating device is: promote cooling efficiency.
Circulating water outlet pipe 1 takes cooling water tank (not shown in FIG.) to the heat that cooling tube 2 absorbs, and cooling water tank carries out cooling process to water, and cooled water enters into cooling tube 2 from circulating water inlet 3 again, so just achieves external heat and exchanges.
Quartz prefabricated rods is through 2000 DEG C of high temperature melting, optical fiber 9 from stove downwards through diameter tester and defect detector to cooling air pipe 10, now the diameter of optical fiber 9 is about 0.125mm, optical fiber 9 is through cooling air pipe 10, hydrogen is filled with in cooling air pipe 10, hydrogen fully absorbs the heat on optical fiber 9 surface and cooling tube 2 carries out heat exchange, optical fiber 9 surface temperature is declined fast, the heat that cooling tube 2 absorbs is cooled by cooling water circulating device, so just achieves the complete exchange of the surperficial heat of optical fiber 9.
Core of the present invention adopts hydrogen as coolant media, improves the cooling efficiency of optical fiber 9, adopt outside cooling water circulating device simultaneously, make the effect of refrigerant better.
Key of the present invention is to ensure that hydrogen leaks, and respectively adds a tightness system 4 for this enters cooling air pipe 10 upper and lower part to optical fiber 9.The entrance of gas pipeline is connected with the outlet of cooling air pipe, and the outlet of gas pipeline is positioned at 1/3 place of cooling air pipe, and ensure that hydrogen upwards has a cushioning pocket, under the drive of row optical fiber at high speeds, hydrogen is rapidly to down.There is pump outwards to take out hydrogen in cooling air pipe 10 exit, ensure that hydrogen can not be followed optical fiber and be run out of cooling air pipe 10, and be collected in recovery purifying plant 5.
The hydrogen reclaimed turns back in gas pipeline 8 through the purification processes reclaiming purifying plant 5 again, in order to ensure the enough of hydrogen, add hydrogen making-up air device 6, reclaim the hydrogen of purifying and enter into gas pipeline 8 with the hydrogen supplemented again through gas flow control device 7, the refrigeration cycle so just achieving hydrogen uses.
The present invention is through following steps and realizes:
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. use hydrogen to carry out a drawing optical fibers on-line cooling method, it is characterized in that, comprise following step:
(1) arrive the cooling tube (2) of refrigerating unit successively through caliper, defect instrument from graphite furnace optical fiber (9) out, drawing speed rises gradually;
(2) when drawing speed reaches 300-500mpm, hydrogen recovery purifying plant (5) is started working;
(3) when drawing speed reaches 800mpm, hydrogen making-up air device (6) is started working, hydrogen is filled in cooling air pipe (10), optical fiber (9) moves downward and drives hydrogen to walk downwards, in the process of motion, the temperature on optical fiber (9) surface is by absorption of hydrogen; And hydrogen fully contacts with cooling tube (2) internal surface, heat is delivered on cooling tube (2); Cooling tube (2) absorb heat again cooled water circle device take away, namely achieve whole optical fiber process of cooling;
Described refrigerating unit comprise cooling tube (2), with cooling tube (2) coaxial arrange cooling air pipe (10), the gas pipeline (8) be connected with cooling air pipe (10), cooling water circulating device and the pump, hydrogen recovery purifying plant (5), hydrogen making-up air device (6) and the gas flow control device (7) that are successively set on gas pipeline (8);
Be provided with tightness system (4) between the two ends of described cooling air pipe (10) and cooling tube (2), described cooling water circulating device comprises cooling water tank and the circulating water inlet (3) be arranged on cooling tube (2) and circulating water outlet pipe (1);
The other end of described circulating water inlet (3) and circulating water outlet pipe (1) is all connected with cooling water tank.
2. use hydrogen according to claim 1 carries out drawing optical fibers on-line cooling method, it is characterized in that,
The outlet of described cooling air pipe (10) is connected with the entrance of gas pipeline (8); The outlet of described gas pipeline (8) is positioned at 1/3 place of cooling air pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153632.7A CN103274593B (en) | 2013-04-27 | 2013-04-27 | On-line cooling method using hydrogen in optical fiber drawing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153632.7A CN103274593B (en) | 2013-04-27 | 2013-04-27 | On-line cooling method using hydrogen in optical fiber drawing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103274593A CN103274593A (en) | 2013-09-04 |
| CN103274593B true CN103274593B (en) | 2015-07-08 |
Family
ID=49057254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310153632.7A Expired - Fee Related CN103274593B (en) | 2013-04-27 | 2013-04-27 | On-line cooling method using hydrogen in optical fiber drawing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274593B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496170B (en) * | 2014-12-31 | 2017-02-08 | 江苏通鼎光棒有限公司 | Optical fiber drawing cooling pipe employing H2 and method |
| CN108726870B (en) * | 2016-03-31 | 2020-12-18 | 杭州富通通信技术股份有限公司 | Optical fiber drawing process |
| CN106383385B (en) * | 2016-11-23 | 2018-02-13 | 中国人民解放军国防科学技术大学 | A kind of all -fiber air chamber system and its implementation with gas circulation function |
| CN109678339B (en) * | 2018-12-29 | 2023-10-20 | 通鼎互联信息股份有限公司 | H is used 2 Optical fiber drawing furnace apparatus and method |
| CN111320375A (en) * | 2020-04-13 | 2020-06-23 | 远东通讯有限公司 | VAD loose body dehydration sintering device |
| CN111908785B (en) * | 2020-07-14 | 2022-07-05 | 湖北凯乐量子通信光电科技有限公司 | Ultralow-temperature helium-free cooling system for high-speed fiber drawing production |
| CN112374747A (en) * | 2020-12-18 | 2021-02-19 | 江东科技有限公司 | Efficient cooling pipe and cooling method thereof |
| CN117702259A (en) * | 2024-02-06 | 2024-03-15 | 宁波合盛新材料有限公司 | Method for quickly cooling PVT furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503891A (en) * | 2001-04-20 | 2004-06-09 | Һ������������·������ú��о��ľ� | Apparatus and methods for low pressure cryogenic cooling, in particular of optical fibers |
| CN101531455A (en) * | 2009-04-27 | 2009-09-16 | 中天科技光纤有限公司 | Optical fiber drawing cooling system |
-
2013
- 2013-04-27 CN CN201310153632.7A patent/CN103274593B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503891A (en) * | 2001-04-20 | 2004-06-09 | Һ������������·������ú��о��ľ� | Apparatus and methods for low pressure cryogenic cooling, in particular of optical fibers |
| CN101531455A (en) * | 2009-04-27 | 2009-09-16 | 中天科技光纤有限公司 | Optical fiber drawing cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103274593A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103274593B (en) | On-line cooling method using hydrogen in optical fiber drawing process | |
| CN103304133B (en) | A kind of hydrogen that uses carries out drawing optical fibers on-line cooling device | |
| CN201618902U (en) | Liquid nitrogen gasification circulating water cooling device | |
| CN103835919B (en) | Residual neat recovering system | |
| CN103256770B (en) | Cryogenic treatment equipment with cold energy recovery device | |
| CN104501485A (en) | Equipment and method for recycling freon in refrigerators | |
| CN203256136U (en) | Online device for cooling optical fibers by hydrogen in fiber drawing process | |
| CN101135437A (en) | Method and device for recycling residual heat of blast furnace low-temperature recirculated water with heat pump technology | |
| CN207866030U (en) | Heat-exchanger rig and heat-exchange system | |
| CN106683821B (en) | A kind of cold-junction container for helium gas cooling | |
| CN104236379A (en) | Ultrasonic crystals remover of heat exchange equipment | |
| CN103265004B (en) | Cooler for carbon molecular sieve samples | |
| CN210660172U (en) | Tunnel ventilation system utilizing shield circulating cooling water for cooling | |
| CN203163349U (en) | Falling film evaporator provided with unique gas passages | |
| CN202431490U (en) | Secondary refrigerant calorimeter | |
| CN201443930U (en) | Carbon dioxide heat pump system | |
| CN203534017U (en) | Liquid nitrogen heat exchange device | |
| CN207501715U (en) | A kind of condensing unit improved structure | |
| CN205980486U (en) | Detachable oil separator | |
| CN205472639U (en) | Two tower hydrogen purification devices | |
| CN205024308U (en) | Cooling device of nitriding furnace cooling zone | |
| CN205223002U (en) | Practice thrift cooling device of fiber drawing helium use amount | |
| CN204460861U (en) | A kind of Novel air-cooled condenser | |
| CN205088267U (en) | Waste heat recovery system | |
| CN102917568B (en) | The cooling system of electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20200427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |