CN212476539U

CN212476539U - High-efficient cooling device of optic fibre

Info

Publication number: CN212476539U
Application number: CN202020634961.9U
Authority: CN
Inventors: 顾建宏; 李凡; 何建勋; 王龙飞
Original assignee: Jiangsu Yongding Fiber Technology Co ltd
Current assignee: Jiangsu Yongding Fiber Technology Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-02-05
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a high-efficient cooling device of optic fibre, be in including main part and setting inflation chamber in the main part treats that cooling optical fibre wears to establish in the inflation chamber, be equipped with the intercommunication in the main part respectively the liquid nitrogen input port and the nitrogen gas discharge port in inflation chamber, the liquid nitrogen warp the liquid nitrogen input port gets into inflation chamber cooling optical fibre, the liquid nitrogen warp behind the gasification the discharge of nitrogen gas discharge port. The utility model has the advantages that: the heat exchange mode adopted by the optical fiber high-efficiency cooling device is changed from the original helium as a convection medium into the ultra-low temperature liquid nitrogen and optical fiber direct heat conduction mode, so that the rapid cooling can be realized; the liquid nitrogen has wide source and low price, expensive helium is not used at all, and the production cost of the optical fiber is saved; the liquid nitrogen spraying method is adopted, the porous liquid nitrogen spraying mold is utilized, the surface temperature of the optical fiber is rapidly reduced by spraying the liquid nitrogen through the porous mold, the surface temperature of the optical fiber can be adjusted by adjusting the flux of the liquid nitrogen, and the technical requirement can be conveniently met.

Description

High-efficient cooling device of optic fibre

Technical Field

The application belongs to the field of optical fiber manufacturing and testing, and particularly relates to an efficient cooling device for optical fibers.

Background

Helium is mostly adopted in the existing optical fiber cooling device to accelerate the heat exchange cooling speed between the optical fiber and the cooling device in the optical fiber drawing process. The helium with high heat conductivity coefficient adopted by the prior art method is used as a heat exchange medium, so that the price is high, the cost is high, and as is known, the helium is used as a rare disposable resource and is more and more expensive, so that the optical fiber cooling and manufacturing cost is high.

For example, chinese patent 201810355395.5 discloses a helium recovery device for an optical fiber drawing cooling tube, which comprises a recovery vacuum pump and an optical fiber drawing cooling tube, wherein the optical fiber drawing cooling tube is provided with a helium supply inlet; nitrogen gas feed inlets are respectively arranged at two ends of the optical fiber drawing cooling pipe; the nitrogen gas feed inlet is fixedly connected with a nitrogen gas sealing device; a helium recovery port of the optical fiber wire drawing cooling pipe is fixedly connected with the electromagnetic valve; the other end of the electromagnetic valve is fixedly connected with a helium concentration detector; the helium concentration detector is fixedly connected with the mass flow controller MFC; the mass flow controller MFC is fixedly connected with the inlet of the recovery vacuum pump; the outlet of the recovery vacuum pump is fixedly connected with the recovery sealed container. The invention has the advantages of reducing the consumption of helium gas by recovering and reusing helium for the cooling tube in the optical fiber drawing process through the functions of the recovery vacuum pump, the electromagnetic valve, the mass flow controller MFC and the recovery sealed container. However, the cost of the helium recovery device is high, the quality of the purified helium after recovery is difficult to ensure, and the recovery efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the high-efficiency cooling device for the optical fiber is provided for solving the defect of high cost of optical fiber drawing cooling equipment in the prior art.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a high-efficient cooling device of optic fibre, includes the main part and sets up inflation chamber in the main part, treat that cooling optical fibre wears to establish in the inflation chamber, be equipped with the intercommunication in the main part respectively the liquid nitrogen input port and the nitrogen gas discharge port in inflation chamber, the liquid nitrogen warp the liquid nitrogen input port gets into inflation chamber cooling optical fibre, the liquid nitrogen warp after the gasification the nitrogen gas discharge port is discharged.

In one of them embodiment, still including setting up discoid liquid nitrogen spraying spare on the main part, liquid nitrogen spraying spare is including the intercommunication the outside annular of liquid nitrogen input port and the intercommunication the inside spout in inflation chamber, bury through a plurality of pipeline intercommunication of burying underground between outside annular and the inside spout in the liquid nitrogen spraying spare, optic fibre passes in proper order inside spout and inflation chamber.

In one embodiment, the main body is vertically arranged, the liquid nitrogen inlet and the nitrogen gas outlet are respectively arranged at the top and the bottom of the main body, and the liquid nitrogen spraying piece is arranged at the top end of the expansion cavity.

In one embodiment, the number of the pipelines is even and is uniformly distributed in the liquid nitrogen spraying piece.

In one embodiment, six pipelines are distributed in an umbrella shape in the liquid nitrogen spraying piece.

In one embodiment, a gap is left between the inner spout and the outer surface of the optical fiber.

In one embodiment, the liquid nitrogen input port is further connected with a flow control valve, and the flow control valve controls the flow of liquid nitrogen flowing into the liquid nitrogen input port.

In one embodiment, a flow meter is connected to the flow control valve.

In one embodiment, the device further comprises a thermometer, and the thermometer is contacted with and senses the temperature in the expansion cavity.

In one embodiment, a nitrogen recovery device is connected outside the nitrogen outlet.

The utility model has the advantages that: the heat exchange mode adopted by the optical fiber high-efficiency cooling device is changed from the original helium as a convection medium into the ultra-low temperature liquid nitrogen and optical fiber direct heat conduction mode, so that the rapid cooling can be realized; the liquid nitrogen has wide source and low price, expensive helium is not used at all, and the production cost of the optical fiber is saved; the liquid nitrogen spraying method is adopted, the porous liquid nitrogen spraying mold is utilized, the surface temperature of the optical fiber is rapidly reduced by spraying the liquid nitrogen through the porous mold, the surface temperature of the optical fiber can be adjusted by adjusting the flux of the liquid nitrogen, and the technical requirement can be conveniently met.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic structural diagram of an optical fiber high-efficiency cooling apparatus according to an embodiment of the present application;

fig. 2 is a partial structural schematic diagram of an optical fiber high-efficiency cooling device according to an embodiment of the present application.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

FIG. 1 is a schematic structural diagram of an optical fiber high-efficiency cooling apparatus according to an embodiment of the present application; fig. 2 is a partial structural schematic diagram of an optical fiber high-efficiency cooling device according to an embodiment of the present application.

Referring to fig. 1, an optical fiber efficient cooling device includes a main body 1 and an expansion cavity 2 disposed in the main body 1, a portion of an optical fiber 3 to be cooled is inserted into the expansion cavity 2, and two ends of the optical fiber 3 respectively penetrate through two ends of the main body 1. A liquid nitrogen input port 4 and a nitrogen gas discharge port 5 which are communicated with the expansion cavity 2 are respectively arranged on the main body 1, liquid nitrogen enters the expansion cavity 2 through the liquid nitrogen input port 4 to cool the optical fiber 3, and gasified liquid nitrogen is discharged through the nitrogen gas discharge port 5. Under normal pressure, the liquid nitrogen temperature is-196 ℃, the cooling effect is strong, 1 cubic meter of liquid nitrogen can be expanded to 696 cubic meter of pure gaseous nitrogen at 21 ℃, and the nitrogen is discharged from the nitrogen outlet 5 after passing through the expansion cavity 2.

Referring to fig. 1 and 2, in order to further enhance the cooling effect, in one embodiment, the optical fiber high-efficiency cooling device further includes a disk-shaped liquid nitrogen spraying member 6 disposed on the main body 1. The liquid nitrogen spraying part 6 comprises an external ring groove 7 communicated with the liquid nitrogen input port 4 and an internal nozzle 8 communicated with the expansion cavity 2, and the external ring groove 7 and the internal nozzle 8 are communicated through a plurality of pipelines 9 buried in the liquid nitrogen spraying part 6. Liquid nitrogen enters the external ring groove 7 through the liquid nitrogen input port 4, then flows to the optical fiber 3 through the pipeline 9 and the internal nozzle 8 in sequence, and sprays and cools the optical fiber 3. Referring to fig. 1 and 2, the optical fiber 3 passes through the inner spout 8 and the expansion chamber 2 in sequence, where the liquid nitrogen cools the optical fiber 3 as the optical fiber 3 passes through. The sprayed liquid nitrogen is converted into nitrogen gas in the expansion chamber 2.

In one embodiment, the main body 1 is vertically arranged relative to the ground, the liquid nitrogen inlet 4 and the nitrogen outlet 5 are respectively arranged at the top and the bottom of the main body 1, so that the whole liquid nitrogen moves from top to bottom, the liquid nitrogen spraying piece 6 is arranged at the top end of the expansion cavity 2, and the liquid nitrogen enters the expansion cavity 2 after being sprayed on the optical fiber 3 and finally is converted into nitrogen to be discharged.

In order to make the spray cooling effect uniform, in one embodiment, an even number of ducts 9 are provided, evenly distributed in the liquid nitrogen spray member 6.

In order to further improve the cooling uniformity and to ensure the cooling effect of the optical fiber 3, in one embodiment, six pipes 9 are arranged in the liquid nitrogen spraying member 6 in an umbrella shape. It is certainly foreseen that the present invention is not limited to the number of pipes 9, and the present invention contemplates two, four or more pipes 9.

In one embodiment, a gap is left between the inner nozzle 8 and the outer surface of the optical fiber 3, and the sprayed liquid nitrogen flows into the expansion cavity 2 through the gap. The size of the gap can be designed according to the size of the optical fiber 3, and the gap is not too small to ensure the realization of the spraying action, and is not too large to make liquid nitrogen difficult to spray to the surface of the optical fiber 3.

In one embodiment, the liquid nitrogen input port 4 is further connected with a flow control valve, and the flow control valve controls the flow of liquid nitrogen flowing into the liquid nitrogen input port 4. The surface temperature of the optical fiber 3 can be adjusted by adjusting the flux of the liquid nitrogen, so that the process requirement can be conveniently met.

To facilitate monitoring and regulating the flow of liquid nitrogen, in one embodiment, a flow meter is connected to the flow control valve.

To facilitate monitoring and regulating the cooling temperature of the optical fiber 3, in one embodiment, a thermometer is also included that contacts and senses the temperature within the expansion chamber. The operator can adjust the liquid nitrogen flux according to the temperature condition to control the surface temperature of the optical fiber 3, thereby being convenient for meeting the process requirement

In one embodiment, a nitrogen recovery device is connected outside the nitrogen discharge port so as to recover nitrogen.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high-efficient cooling device of optic fibre, its characterized in that includes the main part and sets up inflation chamber in the main part, wait to cool off optic fibre and wear to establish in the inflation chamber, be equipped with the intercommunication respectively in the main part the liquid nitrogen input port and the nitrogen gas discharge port in inflation chamber, the liquid nitrogen warp the liquid nitrogen input port gets into inflation chamber cooling optical fibre, the liquid nitrogen warp after the gasification the nitrogen gas discharge port is discharged.

2. The efficient optical fiber cooling device according to claim 1, further comprising a disc-shaped liquid nitrogen spraying member disposed on the main body, wherein the liquid nitrogen spraying member comprises an outer ring groove communicated with the liquid nitrogen input port and an inner nozzle communicated with the expansion chamber, the outer ring groove and the inner nozzle are communicated with each other through a plurality of pipes buried in the liquid nitrogen spraying member, and the optical fiber sequentially passes through the inner nozzle and the expansion chamber.

3. The apparatus for cooling an optical fiber of claim 2, wherein the main body is vertically disposed, the liquid nitrogen inlet and the nitrogen gas outlet are disposed at the top and the bottom of the main body, respectively, and the liquid nitrogen spraying member is disposed at the top end of the expansion chamber.

4. The apparatus for cooling an optical fiber according to claim 2, wherein the number of said pipes is an even number, and said pipes are uniformly distributed in said liquid nitrogen spraying member.

5. The apparatus for cooling optical fiber according to claim 4, wherein six of said tubes are arranged in an umbrella shape in said liquid nitrogen spraying member.

6. A device for cooling an optical fiber according to claim 2, wherein a gap is provided between the inner nozzle and an outer surface of the optical fiber.

7. The efficient optical fiber cooling device according to claim 1, wherein a flow control valve is further connected to the liquid nitrogen input port, and the flow control valve controls the flow of liquid nitrogen flowing into the liquid nitrogen input port.

8. The apparatus according to claim 7, wherein a flow meter is connected to the flow control valve.

9. The fiber optic high efficiency cooling device of claim 1 further comprising a thermometer that contacts and senses the temperature within the expansion chamber.

10. The apparatus for cooling an optical fiber according to claim 1, wherein a nitrogen recovery device is further connected to the nitrogen outlet.