CN211946813U - Helium-saving optical fiber cooling device - Google Patents
Helium-saving optical fiber cooling device Download PDFInfo
- Publication number
- CN211946813U CN211946813U CN201922354107.7U CN201922354107U CN211946813U CN 211946813 U CN211946813 U CN 211946813U CN 201922354107 U CN201922354107 U CN 201922354107U CN 211946813 U CN211946813 U CN 211946813U
- Authority
- CN
- China
- Prior art keywords
- pipe
- helium
- cooling
- inlet pipe
- gas inlet
- 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.)
- Active
Links
Images
Landscapes
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model relates to an optical fiber cooling device for saving helium, which comprises a cooling pipe, a helium gas inlet pipe, a nitrogen gas inlet pipe and a main gas inlet pipe, wherein the inlet end and the outlet end of the cooling pipe are respectively provided with an air seal ring; the helium gas inlet pipe and the nitrogen gas inlet pipe are respectively and independently connected with a main gas inlet pipe, the main gas inlet pipe is connected with the inner cavity of the cooling pipe, and the nitrogen gas inlet pipe is provided with a first nitrogen branch pipe connected with the gas seal ring; the pipe wall of the cooling pipe is hollow to form a cooling liquid heat exchange cavity, and the cooling liquid heat exchange cavity is externally connected with a cooling liquid circulating pipe. The utility model discloses an optic fibre cooling device has configured nitrogen gas intake pipe and helium intake pipe for the cooling tube, replaces the helium with nitrogen gas at standby state. And in a working state, the nitrogen is utilized to form air seals at the two ends of the cooling pipe, so that the leakage of the helium is reduced.
Description
Technical Field
The utility model relates to a cooling device of optic fibre in optic fibre preparation process.
Background
In the preparation process of the optical fiber, helium with high heat conductivity coefficient is used as heat exchange gas to rapidly cool the high-temperature optical fiber, the optical fiber continuously passes through the cooling device, so that the cooling device cannot be absolutely sealed, and the helium introduced into the cooling device continuously overflows along with the optical fiber to cause the loss of the helium. And the helium is expensive, so that the loss of the helium in the cooling device is reduced, and the production cost of an enterprise can be saved.
Publication number CN 110255883A's patent document discloses a prevent optic fibre wire drawing cooling tube of helium leakage, including the body, import and export have been seted up respectively to the top and the bottom of body, are equipped with the heat preservation on the lateral wall all around of body, are equipped with cooling body on the both ends lateral wall of body, cooling body sets up with the inner wall intercommunication of body, be equipped with the sealing mechanism who is used for sealed cooling body on the lateral wall of body, sealing mechanism slides and sets up on the inner wall of body, the heat preservation is including setting up the cylinder type cavity on the body lateral wall, cylinder type cavity indoor packing has insulation material. The cooling device realizes cooling of the drawn wires in the tube body and helium loss prevention through the heat insulation layer, the cooling mechanism and the sealing mechanism, and can reduce the heat exchange probability between the temperature in the tube body and the outside air quickly.
The patent document with the publication number of CN110272200A discloses a high-speed optical fiber drawing tower, which comprises a tower body framework, wherein a plurality of symmetrically arranged screw holes are formed in the tower body framework, and a high-precision feeding device, a high-temperature furnace, an annealing pipe, a bare fiber diameter detector, a cooling pipe, a coating system, a curing furnace, an eccentric detection system, a twisting device and a tension detection device are sequentially arranged on the inner side of the tower body framework from top to bottom; the tower body framework is fixed by screws according to different levels, and a traction device and a double take-up device which are arranged in parallel with the tower body framework are arranged on the outer side of the tower body framework; the high-speed drawing tower has enough height, can realize the global drawing speed of 3500m/min at most, and can reduce the helium consumption of an optical fiber cold tube by 5-8L/min in the high-speed drawing process due to the advantages of the tower body in the production process, thereby improving the drawing speed and reducing the manufacturing cost of the optical fiber.
For optical fiber manufacturing enterprises, helium saving becomes one of the important research and development topics for reducing the production cost of the enterprises.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an optic fibre cooling device reaches the purpose of saving the helium quantity.
The utility model provides a technical scheme that above-mentioned problem adopted does: an optical fiber cooling device capable of saving helium comprises a cooling pipe, a helium gas inlet pipe, a nitrogen gas inlet pipe and a main gas inlet pipe, wherein the inlet end and the outlet end of the cooling pipe are respectively provided with a gas seal ring; the helium gas inlet pipe and the nitrogen gas inlet pipe are respectively and independently connected with a main gas inlet pipe, the main gas inlet pipe is connected with the inner cavity of the cooling pipe, and the nitrogen gas inlet pipe is provided with a first nitrogen branch pipe connected with the gas seal ring; the pipe wall of the cooling pipe is hollow to form a cooling liquid heat exchange cavity, and the cooling liquid heat exchange cavity is externally connected with a cooling liquid circulating pipe.
And simultaneously when the cooling pipe exchanges heat with the helium gas, the cooling pipe is cooled in real time by using cooling liquid such as water or oil flowing in the cooling liquid heat exchange cavity and the cooling liquid circulating pipe.
Preferably, an electrostatic eliminator is arranged near the inlet end of the cooling pipe, and the nitrogen inlet pipe is provided with a second nitrogen branch pipe connected with the electrostatic eliminator.
Preferably, a flow regulator is arranged on the pipeline of the main air inlet pipe and used for regulating the nitrogen flow or the helium flow in the cooling pipe, and particularly, when helium flows, the helium flow is regulated according to the change of the travelling speed of the optical fiber in the cooling pipe.
Preferably, the pipelines of the helium gas inlet pipe, the nitrogen gas inlet pipe, the first nitrogen branch pipe and the second nitrogen branch pipe are respectively provided with a valve for realizing the switching of nitrogen and helium in the cooling pipe.
Preferably, the main air inlet pipe is connected to the inlet, the middle and the outlet of the cooling pipe through three air inlet branch pipes respectively, so that the optical fibers are uniformly cooled at the inlet end, the middle and the outlet end of the cooling pipe.
Preferably, a plurality of axially extending heat dissipation fins are circumferentially and uniformly distributed on the inner wall of the cooling pipe at intervals, and the heat dissipation fins can increase the contact area of helium and the cooling pipe and accelerate heat exchange. The radial width of the radiating fins is 1/5-1/3 of the inner radius of the cooling tube, so that the operation of the optical fiber is ensured not to be interfered, and meanwhile, the heat exchange area is increased as much as possible. The axial heat dissipation fins form flow guide for helium, and the flow of the helium is stabilized.
Optionally, a plurality of radially extending annular heat dissipation fins are axially and uniformly distributed on the inner wall of the cooling pipe. The inner diameter of the annular radiating fin is 1/5-1/3 of the inner radius of the cooling pipe. Compared with the heat dissipation fins extending axially, the annular heat dissipation fins can reduce the loss of helium in the cooling pipe, but have the defects of high cleaning difficulty and short replacement period of the cooling pipe.
Preferably, the air seal ring is of a double-flap type or a multi-flap type and is driven to open or close by an air cylinder.
Compared with the prior art, the utility model has the advantages of: the utility model discloses an optic fibre cooling device has configured nitrogen gas intake pipe and helium intake pipe for the cooling tube, and at the standby state before optic fibre gets into the cooling tube, lets in nitrogen gas in the cooling tube and maintains the malleation in the cooling tube, saves the use of helium. And when the optical fiber enters the cooling tube, the nitrogen is switched into helium, and the optical fiber is cooled by the helium.
In addition, in order to reduce the loss of helium, gas seal rings are respectively arranged at the inlet end and the outlet end of the cooling pipe, and the gas seal rings are connected with nitrogen, namely, the nitrogen is used for forming gas seals at the inlet end and the outlet end of the cooling pipe, so that the escape of helium is reduced.
And then, the inner wall of the cooling pipe is provided with the heat dissipation fins, so that the heat exchange area is increased by utilizing the heat dissipation fins, and the heat exchange between the helium and the cooling pipe is promoted. For the heat dissipation fins, two structures, namely the axially extending heat dissipation fins and the annular heat dissipation fins are designed, the axially extending heat dissipation fins and the annular heat dissipation fins are beneficial to stabilizing the flow of helium, and the optical fiber is prevented from shaking due to interference of the helium; the latter helps to reduce helium gas escape.
Drawings
FIG. 1 is a schematic structural diagram of an optical fiber cooling apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an air seal ring according to an embodiment of the present invention;
FIG. 3 is an axial cross-sectional view of a cooling tube in an embodiment of the present invention;
FIG. 4 is a radial cross-sectional view of a cooling tube in an embodiment of the present invention;
fig. 5 is an axial cross-sectional view of another cooling tube structure according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawing, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiment relates to an optical fiber cooling device, including cooling tube 2, helium intake pipe, nitrogen gas intake pipe, the main intake pipe of vertical setting, the entry end and the exit end of cooling tube 2 are provided with atmoseal ring 3 respectively, are provided with static eliminator 4 near 2 entry ends of cooling tube, get into cooling tube 2 before it destatics to optic fibre, and atmoseal ring 3 is the bivalve formula of closing, is opened or is closed by cylinder 1 drive respectively. The helium gas inlet pipe and the nitrogen gas inlet pipe are respectively and independently connected with the main gas inlet pipe, and the main gas inlet pipe is respectively connected to the upper position, the middle position and the lower position of the cooling pipe 2 through the three gas inlet branch pipes, so that uniform gas supply to the interior of the cooling pipe 2 is realized. Reasonably, a flow regulator 5 is arranged on the pipeline of the main air inlet pipe, and the flow regulator 5 is utilized to realize the flow regulation of the nitrogen or helium gas entering the cooling pipe.
The nitrogen inlet pipe is provided with a first nitrogen branch pipe connected with the two gas seal rings 3, and the inlet end and the outlet end of the cooling pipe 2 are sealed by nitrogen. The nitrogen inlet pipe is provided with a second nitrogen branch pipe which is connected with the static eliminator 4, and nitrogen purging is carried out on the surface of the optical fiber to remove the adhesive on the surface of the optical fiber while eliminating static.
The pipe wall of the cooling pipe 2 is hollow to form a cooling liquid heat exchange cavity, the cooling liquid heat exchange cavity is externally connected with a cooling liquid circulating pipe, and cooling liquid flows through the cooling pipe from bottom to top to exchange heat with the cooling pipe in the process. Optionally, a coolant heat exchange box 6 is disposed on the coolant circulation pipeline, and is configured to exchange heat for the coolant flowing out from the upper end of the coolant pipe, so that the coolant I is returned to the coolant heat exchange cavity of the coolant pipe 2 as the coolant, and the coolant heat exchange box 6 may be a commercially available plate heat exchanger to cool the coolant.
In order to increase the heat exchange efficiency between the cooling pipe and the helium gas, a plurality of axially extending heat dissipation fins are circumferentially and uniformly distributed on the inner wall of the cooling pipe at intervals, as shown in fig. 3 and 4. The width of the radiating fins is 1/4 of the inner radius of the cooling pipe.
As an alternative, the heat exchanging fins of the present application may also be a plurality of radially extending annular heat dissipating fins arranged at intervals along the axial direction of the cooling tube, and the plurality of annular heat dissipating fins are uniformly distributed along the axial direction, as shown in fig. 5. The inner diameter of the annular radiating fin is 1/4 of the inner radius of the cooling pipe.
The static eliminator 4 in this embodiment is a non-contact type, and a commercially available static eliminating ion blower may be selected.
The optical fiber cooling device works as follows:
standby state: the cylinder drives the air seal ring to open the inlet end and the outlet end of the cooling pipe, and the cooling liquid heat exchange box 6 is started to cool the cooling pipe. The method comprises the steps of closing a valve 10 and a valve 11 of a helium gas inlet pipe on the pipe wall, closing a valve 21 of a first nitrogen branch pipe and a valve 23 of a second nitrogen branch pipe, opening a valve 20 and a valve 22, introducing nitrogen into a cooling pipe, controlling the flow of the nitrogen by using a flow regulator 5, keeping positive pressure in the cooling pipe, purging the inner wall of the cooling pipe, and preventing dust from entering the cooling pipe.
The working state is as follows: opening the static eliminator 4, opening the valve 21, eliminating static electricity and purging the surface of the optical fiber, opening the valves 10 and 11, introducing helium into the cooling tube, adjusting the flow of the helium through the flow regulator 5, opening the valve 23, closing the valve 22, driving the air cylinder to drive the air seal rings to be closed, introducing nitrogen into the air seal rings, and forming nitrogen air seals at the upper end and the lower end of the cooling tube. The optical fiber enters the cooling pipe, the helium cools the high-temperature optical fiber, the cooling pipe exchanges heat with the helium, and the cooling liquid exchanges heat with the cooling pipe.
And after the optical fiber is broken, the working state is switched to the standby state.
The utility model discloses replace the helium with nitrogen gas at the standby state, help saving the quantity of helium. In a working state, the upper end and the lower end of the cooling pipe are provided with the air seals, so that helium loss can be reduced.
Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An optical fiber cooling device for saving helium gas is characterized in that: the cooling device comprises a cooling pipe, a helium gas inlet pipe, a nitrogen gas inlet pipe and a main gas inlet pipe, wherein the inlet end and the outlet end of the cooling pipe are respectively provided with a gas seal ring; the helium gas inlet pipe and the nitrogen gas inlet pipe are respectively and independently connected with a main gas inlet pipe, the main gas inlet pipe is connected with the inner cavity of the cooling pipe, and the nitrogen gas inlet pipe is provided with a first nitrogen branch pipe connected with the gas seal ring; the pipe wall of the cooling pipe is hollow to form a cooling liquid heat exchange cavity, and the cooling liquid heat exchange cavity is externally connected with a cooling liquid circulating pipe.
2. A helium saving optical fiber cooling device as claimed in claim 1, wherein: an electrostatic eliminator is arranged at the position close to the inlet end of the cooling pipe, and the nitrogen inlet pipe is provided with a second nitrogen branch pipe connected with the electrostatic eliminator.
3. A helium saving optical fiber cooling device as claimed in claim 1, wherein: and a flow regulator is arranged on the pipeline of the main air inlet pipe.
4. A helium saving optical fiber cooling device as claimed in claim 1, wherein: and the pipelines of the helium gas inlet pipe, the nitrogen gas inlet pipe, the first nitrogen branch pipe and the second nitrogen branch pipe are respectively provided with a valve.
5. A helium saving optical fiber cooling device as claimed in claim 1, wherein: the main air inlet pipe is connected to the inlet, the middle and the outlet of the cooling pipe through three air inlet branch pipes respectively.
6. A helium saving optical fiber cooling device as claimed in claim 1, wherein: a plurality of axially extending radiating fins are arranged on the inner wall of the cooling pipe at intervals in the circumferential direction, and the plurality of radiating fins are uniformly distributed in the circumferential direction.
7. A helium saving optical fiber cooling device as claimed in claim 6, wherein: the width of the radiating fins is 1/5-1/3 of the inner radius of the cooling pipe.
8. A helium saving optical fiber cooling device as claimed in claim 1, wherein: the inner wall of the cooling pipe is provided with a plurality of annular radiating fins extending in the radial direction at intervals along the axial direction, and the plurality of annular radiating fins are uniformly distributed along the axial direction.
9. A helium saving optical fiber cooling device as claimed in claim 8, wherein: the inner diameter of the annular radiating fin is 1/5-1/3 of the inner radius of the cooling pipe.
10. A helium saving optical fiber cooling device as claimed in claim 8, wherein: the air seal ring is in a double-valve opposite type or a multi-valve opposite type and is driven to open or close by an air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922354107.7U CN211946813U (en) | 2019-12-24 | 2019-12-24 | Helium-saving optical fiber cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922354107.7U CN211946813U (en) | 2019-12-24 | 2019-12-24 | Helium-saving optical fiber cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211946813U true CN211946813U (en) | 2020-11-17 |
Family
ID=73187318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922354107.7U Active CN211946813U (en) | 2019-12-24 | 2019-12-24 | Helium-saving optical fiber cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211946813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651528A (en) * | 2021-08-18 | 2021-11-16 | 郭俊滔 | Cooling device for optical fiber drawing |
-
2019
- 2019-12-24 CN CN201922354107.7U patent/CN211946813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651528A (en) * | 2021-08-18 | 2021-11-16 | 郭俊滔 | Cooling device for optical fiber drawing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5546641B2 (en) | Method and apparatus for reducing heat loss from edge inductors in a glass manufacturing process | |
| CN101531455B (en) | Optical fiber drawing cooling system | |
| CN110683752B (en) | Optical fiber drawing cooling system and cooling method thereof | |
| US4174842A (en) | Non-contacting seal for treating chamber through which elongated material is moved | |
| CN211946813U (en) | Helium-saving optical fiber cooling device | |
| CN100340509C (en) | Optical fiber drawing method and drawing furnace | |
| CN106130259A (en) | There is the motor of direct-cooled structure | |
| MX2013005121A (en) | Improved optical fiber cooling device. | |
| CN107988468A (en) | A kind of device suitable for isothermal hardening | |
| EP1180500A2 (en) | Method and apparatus for cooling an optical fibre during drawing using a multi-chamber cooler | |
| CN104329970A (en) | Finned casing pipe-type compound air cooler pipe bundle | |
| US9052146B2 (en) | Combined cooling of lube/seal oil and sample coolers | |
| CN102840644B (en) | Automatic temperature control communication base station | |
| WO2023142898A1 (en) | Cooling device and control method therefor, and crystal growth apparatus | |
| CN105948478A (en) | Optical fiber production heating furnace capable of reducing usage amount of helium | |
| CN202013100U (en) | High temperature partition wall | |
| CN208794772U (en) | Fused salt storage tank cooler | |
| CN206109205U (en) | Optical fiber perform's water cooling plant | |
| TWI836869B (en) | Cooling device and control method thereof, crystal growth equipment | |
| CN210948812U (en) | Steam turbine bearing heat sink | |
| CN219933327U (en) | Temperature regulating mechanism and parallel pipeline thereof | |
| CN104561456A (en) | Furnace body for cooling rapidly | |
| CN219195284U (en) | External circulation cooling air jet loom | |
| CN219473401U (en) | Lubricating oil cooling device | |
| JP2003212589A (en) | Cooling device for high speed drawing with sealing cap in optical fiber drawing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |