Helium gas optical fiber cooling device

Abstract

The utility model discloses a kind of helium optical fiber cooling devices, it is related to optical fiber production equipment technical field, including pipe body, multiple partitions are fixedly arranged in pipe body along its length direction, rectangular opening is set on each partition, the opening in adjacent two partitions is perpendicular to each other, the upper and lower ends of pipe body are respectively provided with feed pipe and discharge pipe, throttle pipe is provided in discharge pipe, the upper and lower end side wall of pipe body is respectively connected with exhaust pipe and air inlet pipe, circulation pipe is connected between exhaust pipe and air inlet pipe, cooling cylinder and circulating pump are provided on circulation pipe, the lower end side wall of pipe body is also connected with air supplementing pipe, the utility model can change the flowing direction of helium in pipe body by setting partition in pipe body, helium is contacted with optical fiber after mixing for many times, so that the heat of helium everywhere is even, improve the cooling effect of optical fiber;By filling argon into pipe body through air supplementing pipe, positive pressure can be formed in pipe body, prevent external air from entering pipe body.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber production equipment technology, specifically a helium optical fiber cooling device. Background Technology

[0002] Optical fiber is obtained by drawing optical fiber preforms. When the optical fiber comes out of the furnace, it is still at a high temperature of about 1000°C after the optical fiber is formed. Because of the high temperature, it cannot be quickly wrapped or colored. Therefore, it needs to be cooled before it can enter the next process. The optical fiber cooling device is usually set between the furnace mouth and the optical fiber wrapping device. For example, the utility model patent with announcement number CN205443057U discloses an optical fiber drawing cooling system for cooling optical fibers, including at least two cooling devices arranged along the length direction of the optical fiber and with a gap between them, and the optical fiber passes through the cooling cavity of the cooling device. However, in existing cooling devices, the helium flows axially within the tube, which easily leads to temperature differences in various parts of the helium, reducing the heat exchange efficiency between the helium and the optical fiber, resulting in poor cooling performance. At the same time, it is not convenient to recycle the helium, which increases production costs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides a helium fiber optic cooling device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a helium fiber cooling device, comprising a tube body, wherein multiple partitions are fixedly arranged along the length of the tube body, each partition having a rectangular opening, the openings of adjacent partitions being perpendicular to each other, an inlet pipe and an outlet pipe are respectively arranged at the upper and lower ends of the tube body, a throttling pipe is arranged in the outlet pipe, an exhaust pipe and an inlet pipe are respectively connected to the upper and lower sidewalls of the tube body, a circulation pipe is connected between the exhaust pipe and the inlet pipe, a cooling cylinder and a circulation pump are arranged on the circulation pipe, and a gas replenishment pipe is also connected to the lower sidewall of the tube body.

[0005] Preferably, air distribution cylinders are fixedly installed on the inner sides of both the upper and lower ends of the pipe body. Multiple air distribution holes are evenly opened on the air distribution cylinders along the circumferential direction. The gas discharged from the air inlet pipe and the air replenishment pipe enters the pipe body after being rectified by the lower air distribution cylinder. The gas in the pipe body enters the exhaust pipe after being rectified by the upper air distribution cylinder.

[0006] Preferably, the inner diameter of the throttling tube is 150µm to 300µm larger than the outer diameter of the optical fiber, and the throttling tube is made of polytetrafluoroethylene.

[0007] Preferably, the tube body, the discharge tube, and the feed tube are composed of two semi-cylinders combined together, and the plurality of partitions are respectively fixed inside the two semi-cylinders.

[0008] Preferably, connecting lugs are fixedly provided at the edges of both semi-cylinders.

[0009] Preferably, the inner side of the upper port of the feed pipe is chamfered.

[0010] This invention provides a helium-filled optical fiber cooling device with the following advantages: The device alters the flow direction of helium within the tube by installing a baffle, ensuring uniform temperature throughout the helium. After multiple mixing processes, the helium comes into contact with the optical fiber, enhancing the cooling effect. Injecting argon into the tube via a gas supply pipe creates positive pressure, preventing external air from entering and ensuring the optical fiber remains enveloped in argon during cooling. A circulating pump extracts the argon from the tube through an exhaust pipe, cools it in a cooling cylinder, and then re-enters the tube to cool the optical fiber, achieving argon recycling. A gas distribution cylinder prevents lateral winds from blowing the optical fiber to one side when argon enters the tube. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a three-dimensional internal structure diagram of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is the front view of the internal structure of this utility model.

[0012] In the diagram: 1. Pipe body; 2. Baffle plate; 3. Opening; 4. Discharge pipe; 5. Feed pipe; 6. Throttling pipe; 7. Air inlet pipe; 8. Exhaust pipe; 9. Circulation pipe; 10. Cooling cylinder; 11. Circulation pump; 12. Air supply pipe; 13. Air distribution cylinder; 14. Air distribution hole; 15. Connecting lug. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] Please see Figures 1-4This utility model provides a technical solution: a helium-optical fiber cooling device, comprising a tube body 1, with multiple partitions 2 fixedly arranged along its length inside the tube body 1. Each partition 2 has a rectangular opening 3, and the openings 3 in adjacent partitions 2 are perpendicular to each other, thereby changing the flow direction of helium in the tube body 1, allowing the helium to come into contact with the optical fiber after multiple mixing processes, and ensuring uniform heat distribution throughout the helium. An inlet pipe 5 and an outlet pipe 4 are respectively arranged at the upper and lower ends of the tube body 1. A throttling pipe 6 is arranged inside the outlet pipe 4, with the inner diameter of the throttling pipe 6 being 150µm to 300µm larger than the outer diameter of the optical fiber. The throttling pipe 6 is made of... Polytetrafluoroethylene is used. The flow rate of helium through the discharge pipe 4 is reduced by the throttling pipe 6. The upper and lower side walls of the pipe body 1 are respectively connected to the exhaust pipe 8 and the inlet pipe 7. The exhaust pipe 8 and the inlet pipe 7 are connected to the circulation pipe 9. The circulation pipe 9 is equipped with a cooling cylinder 10 and a circulation pump 11. The circulation pump 11 is used to make helium flow in the pipe body 1. The cooling cylinder 10 is used to cool the helium extracted from the pipe body 1 and then discharge the cooled helium back into the pipe body 1. The lower side wall of the pipe body 1 is also connected to the gas supply pipe 12. The gas supply pipe 12 is used to ensure that the pipe body 1 is under positive pressure and prevent external air from entering the pipe body 1.

[0015] As an embodiment of this utility model, air distribution cylinders 13 are fixedly installed on the inner sides of both the upper and lower ends of the tube body 1. Multiple air distribution holes 14 are evenly opened on the air distribution cylinder 13 along the circumferential direction. The gas discharged from the air inlet pipe 7 and the air replenishment pipe 12 enters the tube body 1 after being rectified by the lower air distribution cylinder 13. The gas in the tube body 1 enters the exhaust pipe 8 after being rectified by the upper air distribution cylinder 13, so as to avoid the helium gas forming a side wind in the tube body 1 and blowing the optical fiber to one side.

[0016] As an embodiment of this utility model, the tube body 1, the discharge tube 4, and the feed tube 5 are composed of two semi-cylinders combined together. Multiple partitions 2 are fixed inside the two semi-cylinders respectively. Connecting ears 15 are fixedly provided at the edges of the two semi-cylinders. Practical bolts can be used to combine the two semi-cylinders together, which is convenient for disassembly.

[0017] As an embodiment of this utility model, a chamfer is provided on the inner side of the upper port of the feed pipe 5.

[0018] The working principle and usage process of this utility model are as follows: During use, the optical fiber is passed through the feed pipe 5, the tube body 1, and the throttling pipe 6. A gap is left between the optical fiber inside the feed pipe 5 and its inner wall to prevent uncooled optical fiber from contacting the feed pipe 5. The optical fiber inside the tube body 1 is placed in multiple openings 3. The throttling pipe 6 reduces the gap between the inner wall of the discharge pipe 4 and the optical fiber, thus reducing the amount of argon gas discharged through the discharge pipe 4. During cooling, argon gas is injected into the tube body 1 through the gas supply pipe 12, creating a positive pressure inside the tube body 1. Part of the argon gas in the tube body 1 overflows through the gap between the inner wall of the feed pipe 5 and the optical fiber, and a small portion overflows through the gap between the inner wall of the throttling pipe 6 and the optical fiber, preventing external air from entering the tube body 1 and ensuring... During cooling, the optical fiber is always surrounded by argon gas. The argon gas in the tube 1 is extracted through the exhaust pipe 8 by the circulating pump 11, cooled by the cooling cylinder 10, and then re-enters the tube 1 to cool the optical fiber, realizing the recycling of argon gas. When the argon gas flows in the tube 1, the flow direction of the helium gas in the tube 1 can be changed by multiple baffles 2. The helium gas can be mixed multiple times before contacting the optical fiber, so that the heat of the helium gas is uniform throughout, improving the cooling effect on the optical fiber. Since the inlet pipe 7 is set at the bottom of the tube 1, the cooling gas can flow from the bottom to the top, opposite to the downward movement of the optical fiber, making the temperature distribution more even. The gas distribution cylinder 13 can prevent the generation of side winds when the argon gas enters the tube 1, preventing the optical fiber from being blown to one side.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A helium-optical fiber cooling device, characterized in that, The tube includes a pipe body (1), and multiple partitions (2) are fixedly arranged inside the pipe body (1) along its length. Each partition (2) has a rectangular opening (3). The openings (3) in two adjacent partitions (2) are perpendicular to each other. The upper and lower ends of the pipe body (1) are respectively provided with a feed pipe (5) and a discharge pipe (4). A throttling pipe (6) is provided inside the discharge pipe (4). The upper and lower side walls of the pipe body (1) are respectively connected to an exhaust pipe (8) and an air inlet pipe (7). A circulation pipe (9) is connected between the exhaust pipe (8) and the air inlet pipe (7). A cooling cylinder (10) and a circulation pump (11) are provided on the circulation pipe (9). A supplementary air pipe (12) is also connected to the lower side wall of the pipe body (1).

2. The helium fiber optic cooling device according to claim 1, characterized in that, The pipe body (1) has air distribution cylinders (13) fixedly installed on the inner sides of both the upper and lower ends. Multiple air distribution holes (14) are evenly opened on the air distribution cylinder (13) along the circumferential direction. The gas discharged from the air inlet pipe (7) and the air replenishment pipe (12) enters the pipe body (1) after being rectified by the lower air distribution cylinder (13). The gas in the pipe body (1) enters the exhaust pipe (8) after being rectified by the upper air distribution cylinder (13).

3. The helium fiber optic cooling device according to claim 1, characterized in that, The inner diameter of the throttling tube (6) is 150µm to 300µm larger than the outer diameter of the optical fiber, and the throttling tube (6) is made of polytetrafluoroethylene.

4. The helium fiber optic cooling device according to claim 1, characterized in that, The tube body (1), the discharge pipe (4), and the feed pipe (5) are composed of two semi-cylinders combined together, and multiple partitions (2) are fixed inside the two semi-cylinders respectively.

5. A helium fiber optic cooling device according to claim 4, characterized in that, Connecting lugs (15) are fixedly provided at the edges of both semi-cylinders.

6. The helium fiber optic cooling device according to claim 1, characterized in that, The feed pipe (5) has a chamfer on the inner side of the upper port.

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