Production system for high-strength, fatigue-resistant optical fibers

Abstract

The present invention provides a production system for high-strength, fatigue-resistant optical fibers, comprising a heating furnace main body, a first gas unit, a second gas unit, and a carbon coating unit connected sequentially from top to bottom. The first gas unit has a first fiber feeding channel in the middle, and the second gas unit is correspondingly provided with a second fiber feeding channel. The fiber outlet of the heating furnace main body, the first fiber feeding channel, the second fiber feeding channel, and the fiber inlet of the carbon coating unit are sequentially connected from top to bottom. The first gas unit is filled with argon gas; and the second gas unit is filled with a mixed gas of chlorine and an inert gas. In the production system for high-strength, fatigue-resistant optical fibers provided by the present invention, after the heating furnace main body is drawn, the optical fiber directly enters an argon environment, then enters a second gas unit containing a mixed gas from the argon environment, and then directly enters a carbon coating device from the second gas unit. The outer periphery of the optical fiber will not be contaminated by hydroxyl groups in the air.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fiber manufacturing, and in particular relates to a production system for high-strength fatigue-resistant optical fibers. Background Art

[0002] Optical fiber, made of quartz glass, is used as a light transmission tool. Prolonged exposure to high humidity and high hydrogen environments can easily lead to reduced fiber strength and increased fiber loss, potentially causing fiber failure. Carbon coating, due to its high water and hydrogen resistance, is the preferred choice for sealing optical fiber. Carbon-coated optical fiber, also known as carbon-coated optical fiber, is protected by a sealed carbon layer deposited during the drawing process. Its high fatigue resistance makes it widely used in specialized environments such as fiber-optic hydrophones.

[0003] However, during the drawing process of the carbon-coated optical fiber, after it comes out of the heating furnace main body, the bare optical fiber will be briefly exposed to the air. Under high temperature conditions, water vapor (hydroxyl) in the surrounding environment may enter the interior of the bare optical fiber, causing the surface of the bare optical fiber to be contaminated by hydroxyl before carbon coating, or part of the water vapor in the environment to be sealed inside the carbon coating layer, resulting in a decrease in the quality of the carbon-coated optical fiber, which will seriously affect the fatigue resistance factor of the optical fiber and cause a decrease in the long-term reliability of the optical fiber. Summary of the Invention

[0004] The embodiment of the present invention provides a production system for high-strength fatigue-resistant optical fibers, aiming to solve the technical problem in the prior art that bare optical fibers are exposed before carbon coating, resulting in low carbon coating quality and affecting the fatigue resistance factor.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A production system for high-strength, fatigue-resistant optical fibers is provided, comprising a heating furnace body, a first gas unit, a second gas unit, and a carbon coating unit connected sequentially from top to bottom. The first gas unit has a first fiber feeding channel in the middle, and the second gas unit has a second fiber feeding channel corresponding thereto. The fiber outlet of the heating furnace body, the first fiber feeding channel, the second fiber feeding channel, and the fiber inlet of the carbon coating unit are sequentially connected from top to bottom.

[0007] The first gas unit is filled with argon gas; the second gas unit is filled with a mixed gas of chlorine gas and inert gas.

[0008] In a possible implementation, the first gas unit includes a gas filling box, which is provided with an argon inlet and an argon outlet. A protective space for containing argon is formed inside the gas filling box, and the first fiber feeding channel is opened in the gas filling box in the up and down directions.

[0009] In a possible implementation, the second gas unit includes:

[0010] The shell is internally divided into a mixing chamber and a protection chamber, the mixing chamber and the protection chamber are connected to each other, the shell is provided with a first air inlet and a second air inlet on a side corresponding to the mixing chamber, the shell is provided with a mixed gas outlet on a side corresponding to the protection chamber, the protection chamber is provided with a connecting pipe running through from top to bottom, the second fiber feeding channel is formed in the connecting pipe, and a plurality of air holes are opened on the outer circumference of the connecting pipe;

[0011] a chlorine gas supply device, whose gas outlet is connected to the first gas inlet; and an inert gas supply device, whose gas outlet is connected to the second gas inlet.

[0012] In a possible implementation, the second gas unit further includes a processing device, the processing device is used to remove chlorine, and the processing device is connected to the mixed gas outlet.

[0013] In one possible implementation, a stirring component is provided in the mixing chamber, and the stirring component includes:

[0014] a driving member, disposed at the bottom of the mixing chamber, the driving member having a rotation axis parallel to the up-down direction;

[0015] A driven rod is vertically arranged, and its bottom is coaxially connected to the rotating shaft; and a driving blade is arranged around the top periphery of the driven rod.

[0016] In one possible implementation, a pressure regulator is provided on the pipeline between the inert gas supply device and the mixing chamber, and a pressure sensor is provided at the outlet end of the mixed gas outlet. The pressure sensor is communicatively connected to the pressure regulator to control the inlet pressure of the inert gas.

[0017] In a possible implementation, a plurality of guide plates arranged in an up-and-down staggered manner are provided in the protection chamber, and the plurality of guide plates cooperate to form a serpentine mixed gas flow path.

[0018] In a possible implementation, the high-strength fatigue-resistant optical fiber production system further includes two sets of monitoring components, which are respectively arranged on both sides of the second gas unit, and the monitoring components are used to monitor chlorine gas outside the shell.

[0019] In a possible implementation, air curtain sealing assemblies are provided at the upper and lower ends of the second fiber feeding channel respectively. The air curtain sealing assembly located at the top of the second fiber feeding channel is connected to the first gas unit, and the air curtain sealing assembly is filled with argon.

[0020] In one possible implementation, a heating assembly is further provided in the protection chamber, and the heating assembly includes a plurality of heating elements. The plurality of heating elements are enclosed to form a cylindrical structure, and the cylindrical structure is coaxially sleeved on the outer circumference of the connecting pipe, and the heating elements are used to heat the connecting pipe.

[0021] Compared with the prior art, the production system for high-strength, fatigue-resistant optical fibers provided by the present invention provides two protective environments. After the main body of the heating furnace is drawn, the optical fiber directly enters the argon environment, enters the second gas unit containing the mixed gas from the argon environment, and then directly enters the carbon coating equipment from the second gas unit. During the entire process, there is no contact with the external environment. The periphery of the optical fiber will not be contaminated by hydroxyl groups in the air, and there will be no hydroxyl impurities in the carbon-coated optical fiber, thereby improving the carbon coating quality of the optical fiber, increasing the fatigue resistance factor of the optical fiber, improving the reliability of the carbon-coated optical fiber, and extending the service life of the carbon-coated optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the main structure of a production system for high-strength, fatigue-resistant optical fibers provided by one embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the second gas unit used in one embodiment of the present invention Figure 1 ;

[0025] Figure 3 Schematic diagram of the structure of the second gas unit used in one embodiment of the present invention Figure 2 ;

[0026] Figure 4 for Figure 2 A cross-sectional view of the second gas unit used in;

[0027] Figure 5 for Figure 2 The second gas unit and air curtain seal assembly used in;

[0028] Figure 6 A cross-sectional view of a second gas unit used in another embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Heating furnace body;

[0031] 2. First gas unit; 21. Inflatable box; 22. Argon gas inlet; 23. Argon gas outlet; 24. First fiber feeding channel;

[0032] 3. Second gas unit; 31. Housing; 311. First air inlet; 312. Second air inlet; 313. Mixed gas outlet; 314. Connecting pipe; 3141. Second fiber feeding channel; 3142. Air vent; 32. Chlorine supply equipment; 33. Inert gas supply equipment; 34. Processing equipment; 35. Pressure regulator; 36. Pressure sensor; 37. Heating assembly; 371. Heating element; 38. Deflector;

[0033] 4. Carbon coating unit;

[0034] 5. Monitoring components;

[0035] 6. Air curtain sealing assembly. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] It should be noted that the terms "length", "width", "height", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0038] It should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Furthermore, "plurality" and "several" mean two or more, unless otherwise specifically defined.

[0040] Please also refer to Figures 1 to 6 The production system for high-strength, fatigue-resistant optical fibers provided by the present invention will now be described. The system comprises a heating furnace body 1, a first gas unit 2, a second gas unit 3, and a carbon coating unit 4, which are sequentially connected from top to bottom. The first gas unit 2 has a first fiber feeding channel 24 in the middle, and the second gas unit 3 has a corresponding second fiber feeding channel 3141. The fiber outlet of the heating furnace body 1, the first fiber feeding channel 24, the second fiber feeding channel 3141, and the fiber inlet of the carbon coating unit 4 are sequentially connected from top to bottom. The first gas unit 2 is filled with argon gas, and the second gas unit 3 is filled with a mixture of chlorine and inert gas.

[0041] It should be noted that the argon gas forms a protective environment at the drawing port of the heating furnace body 1, preventing external oxygen from entering the heating furnace body 1 through the drawing port and preventing oxygen from oxidizing the graphite in the heating furnace body 1 into carbon dioxide. The argon gas can also enter the heating furnace body 1 to provide a protective environment and prevent external oxygen from coming into contact with the graphite.

[0042] It should be noted that optical fiber losses are primarily caused by OH- anions, transition metal ions, and rare earth metal ions. Because light scattering and absorption are primarily caused by OH-, OH- ions must be removed from the fiber. Chlorine gas is an effective method for removing OH- ions.

[0043] It should be noted that chlorine mixed with hydrogen at a volume fraction of 5% or more can explode when exposed to strong light. Therefore, chlorine is mixed with an inert gas, which does not contain hydrogen, improving the safety of chlorine. To ensure that the chlorine's effectiveness is not affected, the inert gas accounts for 95% to 96% of the total gas mixture.

[0044] During specific implementation, the first gas unit 2 is disposed below the heating furnace body 1 to isolate oxygen from entering the interior of the heating furnace body 1 .

[0045] Compared with the prior art, the production system for high-strength, fatigue-resistant optical fibers provided in this embodiment provides two protective environments. After the heating furnace main body 1 is drawn, the optical fiber directly enters the argon environment, and from the argon environment enters the second gas unit 3 containing the mixed gas, and then directly enters the carbon coating equipment from the second gas unit 3. During the entire process, there is no contact with the external environment. The periphery of the optical fiber will not be contaminated by hydroxyl groups in the air, and there will be no hydroxyl impurities in the carbon-coated optical fiber, which improves the carbon coating quality of the optical fiber, has a high fatigue resistance factor, improves the reliability of the carbon-coated optical fiber, and extends the service life of the carbon-coated optical fiber.

[0046] In some embodiments, see Figure 1 The first gas unit 2 includes a gas box 21, which is provided with an argon inlet 22 and an argon outlet 23. A protective space for argon is formed inside the gas box 21. A first fiber feeding channel 24 is provided in the vertical direction of the gas box 21. The gas box 21 provides a protective space. After argon enters through the argon inlet 22, it quickly fills the entire chamber, forming a protective environment at the drawing port of the heating furnace body 1, isolating the optical fiber from the external environment and preventing contamination of the optical fiber by hydroxyl groups in the air. The provision of the argon outlet 23 allows the argon gas in the gas box 21 to flow and form an air circulation, improving the isolation effect of the argon gas.

[0047] In some embodiments, see Figures 3 to 5 The second gas unit 3 includes a shell 31, a chlorine gas supply device 32, and an inert gas supply device 33. The interior of the shell 31 is divided into a mixing chamber and a protection chamber, which are interconnected. A first air inlet 311 and a second air inlet 312 are provided on the side of the shell 31 corresponding to the mixing chamber, and a mixed gas outlet 313 is provided on the side corresponding to the protection chamber. A connecting pipe 314 is provided in the protection chamber, which runs vertically through the housing. A second fiber feeding channel 3141 is formed in the connecting pipe 314, and a plurality of air holes 3142 are provided on the outer periphery of the connecting pipe 314. The outlet end of the chlorine gas supply device 32 is connected to the first air inlet 311; the outlet end of the inert gas supply device 33 is connected to the second air inlet 312.

[0048] In a specific implementation, the chlorine supply device 32 can be a chlorine supply machine or a chlorinating machine.

[0049] In a specific implementation, the inert gas supply device 33 may be an inert gas booster or an inert gas generator.

[0050] It should be noted that the gas entering the protection chamber is a uniformly mixed gas with a uniform flow rate, which will not cause the optical fiber to shake and affect the drawing quality.

[0051] In specific implementation, the shell 31 is a rectangular structure, and two partition plates are provided in the shell 31. The partition plates cooperate with the side of the shell 31 to divide the interior of the shell 31 into two parts, namely a mixing chamber and a protection chamber. The mixing chamber is also a rectangular structure. The plate surfaces of the two partition plates are respectively provided with air holes to connect the mixing chamber and the protection chamber. The mixing chamber 312 directly transports the mixed gas to the protection chamber; the first air inlet 311 and the second air inlet 312 are provided on the same side of the shell 1 to enable uniform mixing in the mixing chamber.

[0052] The second gas unit 3 provided in this embodiment can protect the optical fiber. Chlorine and inert gas are mixed in the mixing chamber. After sufficient mixing, they diffuse into the protection chamber to protect the optical fiber and isolate the hydroxyl groups in the air. This ensures that the optical fiber is isolated from the hydroxyl groups when entering the carbon coating unit 4, thereby improving the molding quality of the carbon-coated optical fiber and ensuring the fatigue resistance and reliability of the carbon-coated optical fiber. The chlorine supply device 32 and the inert gas supply device 33 respectively continuously and stably attack chlorine and inert gas into the mixing chamber to ensure that the mixed gas in the protection chamber is evenly distributed. The mixed gas can enter the second fiber delivery channel 3141 through the air vent 3142 to protect the optical fiber.

[0053] In some embodiments, see Figure 4 The second gas unit 3 further includes a processing device 34 for removing chlorine gas, and the processing device 34 is connected to the mixed gas outlet 313. The processing device 34 can process the chlorine gas so that the discharged gas does not cause harm to the human body, thereby protecting the environment and the health of workers.

[0054] In specific implementation, the treatment equipment 34 is an acid treatment equipment, and a sodium hydroxide solution is provided in the treatment equipment 34. The sodium hydroxide solution can react with chlorine gas to convert the chloride ions in the chlorine gas into sodium chloride and sodium hypochlorite, thereby preventing the chlorine gas from being exhausted into the air. The treatment equipment 34 can protect the work safety of the staff.

[0055] In some embodiments, a stirring assembly (not shown) is provided within the mixing chamber. The stirring assembly comprises a driving member, a vertically mounted driven rod, and a driving blade. The driving member is located at the bottom of the mixing chamber and has a rotating shaft parallel to the vertical direction. The bottom of the vertically mounted driven rod is coaxially connected to the rotating shaft. The driving blade is disposed around the top periphery of the driven rod. The provision of the stirring assembly accelerates the mixing of chlorine and inert gas after entering the mixing chamber, improving mixing efficiency and ensuring a uniform gas mixture entering the protective chamber. This provides gas protection for the optical fiber, effectively isolates the optical fiber from airborne hydroxyl groups, and ensures that the optical fiber is not adhered to by airborne hydroxyl groups before entering the carbon coating unit 4, thereby improving the production quality of the carbon-coated optical fiber.

[0056] It should be noted that the mixing chamber and the protection chamber are located on the same horizontal plane, and the driving member is arranged at the bottom of the mixing chamber.

[0057] Optionally, the driving member is a motor having a self-rotating output shaft, which drives the driven rod to rotate, and the driven rod 351 drives the driving blade to rotate, and the blade surface of the driving blade is perpendicular to the horizontal direction, which quickly drives the chlorine and inert gas to mix and improve the mixing efficiency.

[0058] It should be noted that the outer surfaces of the driving blade and the driven rod are coated with corrosion-resistant material to avoid the corrosive effects of chlorine and extend the service life of the driving blade and the driven rod. Alternatively, the driving blade and the driven rod are both made of corrosion-resistant material, such as stainless steel.

[0059] In some embodiments, see Figure 4 A pressure regulator 35 is installed on the pipeline between the inert gas supply device 33 and the mixing chamber. A pressure sensor 36 is installed at the outlet of the mixed gas outlet 313. Pressure sensor 36 is communicatively connected to pressure regulator 35 to control the inert gas inlet pressure. Based on feedback from pressure sensor 36, pressure regulator 35 compensates for the pressure in the protection chamber, ensuring a constant positive pressure at the mixed gas outlet 313. This prevents gas from entering the protection chamber through mixed gas outlet 313 and affecting the internal gas environment.

[0060] In specific implementation, the pressure regulator 35 has an inlet pipe, a main body and an outlet pipe connected in sequence. The inlet pipe is connected to the inert gas supply device 33, and the outlet pipe is connected to the first air inlet 311. The pressure regulator 35 adjusts the outlet flow rate of the outlet pipe according to the data measured by the pressure sensor 36, so that the mixed gas always fills the protection chamber, ensuring the discharge stability of the mixed gas.

[0061] In some embodiments, see Figure 6 The protection chamber is equipped with multiple guide plates 38, staggered vertically. These plates 38 form a serpentine flow path for the mixed gas. The presence of these guide plates 38 prolongs the residence time of the mixed gas within the protection chamber. Upon encountering the guide plates 38, the mixed gas changes direction, extending its flow time. Furthermore, the guide plates 38 guide the mixed gas, directing it to various locations within the protection chamber and ensuring uniformity and stability within the protection chamber.

[0062] In specific implementation, multiple guide plates 38 are staggered up and down along the same horizontal direction, and the mixed gas gradually fills the protection chamber along a tortuous serpentine path. For details, please refer to Figure 6 , turning the protection room into a protection environment, isolating the optical fiber surface from the air, and protecting the surface of the optical fiber from being clean.

[0063] In some embodiments, see Figure 1The high-strength, fatigue-resistant optical fiber production system also includes two monitoring assemblies 5, one on each side of the second gas unit 3. These monitoring assemblies 5 are used to monitor chlorine gas outside of the housing 31. Chlorine gas is toxic and primarily enters the human body through the respiratory tract and dissolves in the moisture contained in the mucous membranes, causing damage to the upper respiratory tract mucosa. Installing monitoring assemblies 5 on both sides of the second gas unit 3 to monitor for chlorine leaks protects workers and reduces potential workplace threats.

[0064] As one embodiment of the monitoring assembly 5, the monitoring assembly 5 includes a sensing module, a processor module, and a warning light. The sensing module is electrically connected to the processing module, and the warning light is electrically connected to the processing module. The sensing module includes a chlorine gas sensor that can detect the concentration of chlorine gas and transmit the sensed data to the processor module. The processor module controls the warning light to illuminate based on the data, alerting personnel to evacuate the work area.

[0065] In some embodiments, see Figure 5 The upper and lower ends of the second fiber feeding channel 3141 are respectively provided with air curtain sealing assemblies 6. The air curtain sealing assembly 6 located at the top of the second fiber feeding channel 3141 is connected to the first gas unit 2, and the air curtain sealing assembly 6 is filled with argon gas. The air curtain sealing assembly 6 can form a seal at the upper and lower ends of the connecting tube 316 to prevent the mixed gas from leaking from the gap between the connecting tube 314 and the optical fiber, thereby improving the sealing performance of the second gas unit 3. The air curtain sealing assembly 6 located at the top of the connecting tube 314 can prevent the mixed gas from entering the heating furnace body 1 upward from the connecting tube 314, thereby affecting the normal operation of the heating furnace body 1. The air curtain sealing assembly 6 located at the bottom of the connecting tube 314 can prevent the mixed gas from entering the carbon coating unit 4 downward from the connecting tube 314, thereby affecting the carbon coating operation of the carbon coating unit 4.

[0066] In a specific implementation, the two air curtain sealing assemblies 6 are respectively provided at the upper and lower ends of the housing 31 from top to bottom.

[0067] In some embodiments, the air curtain sealing assembly 6 includes a sealing shell and an inflation tube. The sealing shell is provided on the surface of the shell 31 and is connected to the connecting tube 314. The inflation tube is connected to the gas source to fill nitrogen into the sealing shell. Argon is an inert gas and will not react with chlorine. After the sealing shell is filled with argon, a gas protection layer is formed at the port of the connecting tube 314 to prevent chlorine from passing through the gas protection layer, thereby improving the sealing effect of the protection chamber.

[0068] In some embodiments, see Figure 4 and Figure 5The protective chamber is also equipped with a heating assembly 37, which includes multiple heating elements 371. The multiple heating elements 371 form a cylindrical structure that is coaxially sleeved around the outer periphery of the connecting tube 314. The heating elements 371 are used to heat the connecting tube 314. The heating assembly 37 provides a high-temperature environment to heat the connecting tube 314, preventing the temperature of the optical fiber from dropping during the drawing process, which would affect the carbon coating step.

[0069] Optionally, the heating element 371 is made of ceramic material, which has good heat preservation effect and is not corroded by chlorine, meeting the use requirements. The ceramic is heated to 1000°C to ensure that the temperature of the optical fiber passing through the connecting tube 314 does not drop.

[0070] It should be noted that the temperature required for carbon coating of optical fiber is 800~1200℃, and the heating element can be heated to 1000℃ to avoid the temperature of the optical fiber from decreasing.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A production system for high-strength, fatigue-resistant optical fibers, characterized in that: The heating furnace comprises a heating furnace body, a first gas unit, a second gas unit and a carbon coating unit connected in sequence from top to bottom. The first gas unit has a first fiber feeding channel in the middle, and the second gas unit has a second fiber feeding channel in correspondence. The wire outlet of the heating furnace body, the first fiber feeding channel, the second fiber feeding channel and the wire inlet of the carbon coating unit are connected in sequence from top to bottom. The first gas unit is filled with argon; the second gas unit is filled with a mixture of chlorine and an inert gas, and the first gas unit and the second gas unit cooperate to prevent the optical fiber from being contaminated by hydroxyl groups in the air; The second gas unit comprises: The shell is internally divided into a mixing chamber and a protection chamber, the mixing chamber and the protection chamber are connected to each other, the shell is provided with a first air inlet and a second air inlet on a side corresponding to the mixing chamber, the shell is provided with a mixed gas outlet on a side corresponding to the protection chamber, the protection chamber is provided with a connecting pipe running through from top to bottom, the second fiber feeding channel is formed in the connecting pipe, and a plurality of air holes are opened on the outer circumference of the connecting pipe; a chlorine gas supply device, the gas outlet of which is connected to the first gas inlet; and an inert gas supply device, the gas outlet of which is connected to the second gas inlet; A stirring assembly is provided in the mixing chamber, and the stirring assembly includes: a driving member, disposed at the bottom of the mixing chamber, the driving member having a rotation axis parallel to the up-down direction; A vertically arranged driven rod, the bottom of which is coaxially connected to the rotating shaft; and The driving blade is arranged around the top periphery of the driven rod.

2. The production system of high-strength fatigue-resistant optical fiber according to claim 1, characterized in that: The first gas unit includes a gas filling box, which is provided with an argon inlet and an argon outlet. A protective space for containing argon is formed inside the gas filling box, and the first fiber feeding channel is opened in the gas filling box along the up and down directions.

3. The high-strength fatigue-resistant optical fiber production system according to claim 1, characterized in that: The second gas unit further includes a processing device, which is used to remove chlorine and is communicated with the mixed gas outlet.

4. The high-strength fatigue-resistant optical fiber production system according to claim 1, characterized in that: A pressure regulator is provided on the pipeline between the inert gas supply device and the mixing chamber, and a pressure sensor is provided at the outlet end of the mixed gas outlet. The pressure sensor is communicatively connected to the pressure regulator to control the inlet pressure of the inert gas.

5. The production system of high-strength fatigue-resistant optical fiber according to claim 1, characterized in that: The protection chamber is provided with a plurality of guide plates arranged in an upper and lower staggered manner, and the plurality of guide plates cooperate to form a serpentine mixed gas flow path.

6. The production system of high-strength fatigue-resistant optical fiber according to claim 1, characterized in that: The production system of high-strength fatigue-resistant optical fiber further includes two sets of monitoring components, which are respectively arranged on both sides of the second gas unit, and the monitoring components are used to monitor the chlorine gas outside the shell.

7. The production system of high-strength fatigue-resistant optical fiber according to claim 1, characterized in that: Air curtain sealing components are respectively provided at the upper and lower ends of the second fiber feeding channel. The air curtain sealing component located at the top of the second fiber feeding channel is connected to the first gas unit. The air curtain sealing component is filled with argon gas.

8. The high-strength fatigue-resistant optical fiber production system according to claim 1, characterized in that: The protection chamber is further provided with a heating assembly, which includes a plurality of heating elements. The plurality of heating elements are enclosed to form a cylindrical structure, and the cylindrical structure is coaxially sleeved on the outer circumference of the connecting pipe. The heating elements are used to heat the connecting pipe.

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