A continuous fiber spinning tunnel system

Abstract

The invention discloses a continuous fiber spinning corridor system, which relates to the field of continuous fiber spinning preparation. The system comprises a storage unit connected to a nitrogen generator, a feeding unit, a spinneret unit and a corridor drying unit. The feeding unit comprises a gear metering pump, a feeding pipeline and three groups of discharging pipelines. The spinneret unit comprises three groups of spinnerets. One end of the three groups of discharging pipelines is connected to the gear metering pump, and the other end is connected to the three groups of spinnerets one by one. The corridor drying unit comprises a natural area, an evaporation area and a coagulation area. The natural area, the evaporation area and the coagulation area are respectively provided with a first corridor tube group, a second corridor tube group and a third corridor tube group. The first corridor tube group, the second corridor tube group and the third corridor tube group all comprise three corridor tube sections. The present application redesigns the spinning corridor system to obtain a three-in-one corridor mode. By adopting this mode, the control of the spinneret unit, the corridor drying unit and the like is more stable, which is conducive to meeting the requirements of continuous and stable spinning.

Description

Technical Field

[0001] The invention relates to the technical field of continuous fiber spinning preparation, and more specifically, to a continuous fiber spinning corridor system. Background Art

[0002] Polycrystalline alumina continuous fiber is a kind of filament fiber. It is mainly composed of alumina and silica. It is prepared by dry spinning. It can be used for a long time in high temperature environments above 1000℃. It can be woven into soft fiber fabrics such as fiber ropes, fiber cloths, and fiber sleeves. It can also be made into a variety of composite materials for use. It is convenient and flexible in form. It is a material variety urgently needed in emerging high-tech industries and high-tech fields such as aviation, aerospace, and new national defense weapons. The production of polycrystalline alumina continuous fiber has high requirements for production equipment and production processes. Each process control point needs to be precisely controlled to achieve a continuous and stable state.

[0003] The polycrystalline alumina continuous fiber spinning tunnel system includes a storage device, a feeding device, a spinneret device, a tunnel pre-drying device, an oiling device, a twisting device, etc. The various parts cooperate with each other to prepare the spinning liquid into a qualified fiber blank. The existing production line of polycrystalline alumina continuous fiber can produce stably.

[0004] However, to make finished products such as continuous fiber ropes, fiber cloths, fiber sleeves, etc., a large amount of continuous fiber is often required as raw materials. According to the existing production capacity, the supply is still insufficient and the production output cannot meet the actual use needs.

[0005] In summary, how to increase the yield of polycrystalline alumina continuous fibers is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a continuous fiber spinning tunnel system to effectively increase the output of polycrystalline alumina continuous fibers.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A continuous fiber spinning tunnel system, comprising:

[0009] A material storage unit connected to a nitrogen generator;

[0010] A feeding unit, comprising a gear metering pump, a feeding pipeline and three discharging pipelines, wherein the feeding pipeline connects the gear metering pump and the storage unit;

[0011] The spinning unit comprises three groups of spinning devices, one end of each of the three groups of discharge pipes is connected to the gear metering pump, and the other end is connected to each of the three groups of spinning devices one by one;

[0012] The corridor drying unit has a natural zone, an evaporation zone and a solidification zone. The natural zone, the evaporation zone and the solidification zone are respectively provided with a first corridor tube group, a second corridor tube group and a third corridor tube group. The first corridor tube group, the second corridor tube group and the third corridor tube group each include three corridor tube sections. The corridor drying unit is connected to the spinning unit.

[0013] Preferably, the material storage unit is a stainless steel tank, a power interface is provided on the tank top of the stainless steel tank, the output end of the nitrogen generator is connected to the power interface, and a pressure-stabilizing regulating valve is also provided between the stainless steel tank and the nitrogen generator, and the pressure-stabilizing regulating valve is used for pressure regulation.

[0014] Preferably, the top of the stainless steel tank is also provided with an exhaust port and a safety valve, the bottom of the tank is provided with a discharge port, and the gear metering pump is connected to the discharge port.

[0015] Preferably, the spinneret unit further comprises an external support frame, the three groups of spinnerets are fixedly installed in the external support frame and are evenly distributed, and the spinneret unit is equipped with a pressure monitor.

[0016] Preferably, the three corridor tube sections of the first corridor tube group correspond one-to-one to the output ends of the three groups of the spinning devices, the three corridor tube sections of the second corridor tube group correspond one-to-one to the three corridor tube sections of the first corridor tube group and are connected vertically, and the three corridor tube sections of the third corridor tube group correspond one-to-one to the three corridor tube sections of the second corridor tube group and are connected vertically.

[0017] Preferably, the corridor drying unit also includes four groups of ring-blowing devices, which are respectively arranged between the natural zone and the spinning unit, between the evaporation zone and the natural zone, between the coagulation zone and the evaporation zone, and at the bottom of the coagulation zone, and each group of the ring-blowing devices is provided with an air inlet and outlet on the outside.

[0018] Preferably, a shell, an insulation layer and a heating element are provided in the evaporation zone, and three temperature zones matching the three sections of the second channel pipe group are formed in the shell. The insulation layer is arranged on the inner side of the shell, and the heating element and the channel pipe section are both installed in the temperature zone.

[0019] Preferably, a support frame is provided in the natural area, the first corridor pipe group is arranged on the support frame, and the three corridor pipe sections of the first corridor pipe group are respectively provided with two detection holes, and the two detection holes are respectively equipped with temperature and humidity probes and monitoring probes.

[0020] Preferably, it also includes an oil coating unit, which is arranged at the output end of the tunnel drying unit, and the oil coating unit is composed of three groups of oil tankers and positioning rings, and the three groups of oil tankers and positioning rings correspond one by one to the three tunnel pipe sections of the third tunnel pipe group.

[0021] Preferably, a yarn bundle twisting unit is provided at the output end of the oil coating unit, and the yarn bundle twisting unit consists of a bunching wheel feeding end, a twisting component, a bunching wheel output end and a stretching roller, the bunching wheel feeding end is connected to the oil coating unit, the twisting component is arranged between the bunching wheel feeding end and the bunching wheel output end, and the bunching wheel output end is arranged between the twisting component and the stretching roller.

[0022] The continuous fiber spinning corridor system provided by the present invention comprises a storage unit connected to a nitrogen generator; a feeding unit comprising a gear metering pump, a feed pipe and three discharge pipes, wherein the feed pipe connects the gear metering pump and the storage unit; a spinning unit comprising three groups of spinning devices, wherein one end of the three groups of discharge pipes is connected to the gear metering pump, and the other end is connected one by one to the three groups of spinning devices; a corridor drying unit having a natural zone, an evaporation zone and a coagulation zone, wherein the natural zone, the evaporation zone and the coagulation zone are respectively provided with a first corridor tube group, a second corridor tube group and a third corridor tube group, wherein the first corridor tube group, the second corridor tube group and the third corridor tube group each comprise three corridor tube sections, and the corridor drying unit is connected to the spinning unit.

[0023] The continuous fiber spinning tunnel system provided by the present invention redesigns the spinning tunnel system to obtain a three-in-one tunnel mode. With this mode, the control of the spinning unit, the tunnel drying unit, etc. is more stable, which is conducive to achieving the requirements of continuous and stable spinning and achieving the purpose of stable production. By improving and optimizing the spinning tunnel system, the production stability and output are significantly improved. According to the actual production of the technology of this application, the fiber output will be increased by more than three times, which significantly improves the situation that the amount of produced fiber does not meet the needs of the terminal product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 This is a diagram of the continuous fiber spinning tunnel system;

[0026] Figure 2 is a top view of the spinneret unit;

[0027] Figure 3 This is a cross-sectional view of the evaporation zone of the tunnel drying unit.

[0028] Figure 1-Figure 3 , the reference numerals include:

[0029] 1. Nitrogen generator; 2. Pressure regulating valve; 3. Stainless steel tank; 4. Exhaust port;

[0030] 5. Safety valve; 6. Power interface; 7. Discharge port; 8. Gear metering pump;

[0031] 9. Discharge pipe; 91. Feed pipe; 10. Pressure monitor; 11. Spinning device;

[0032] 12. Circular air blowing device; 13. Air inlet and outlet; 14. Temperature and humidity probe;

[0033] 15. Monitoring probe; 16. Natural area; 17. Evaporation area; 18. Solidification area;

[0034] 19. Positioning ring; 20. Bunching wheel feeding end; 21. Twisting component;

[0035] 22. Bunching wheel output end; 23. Drafting roller; 24. Support frame;

[0036] 25. Shell; 26. Insulation layer; 27. Heating element; 28. External support frame;

[0037] 161, the first corridor pipe group; 171, the second corridor pipe group; 181, the third corridor pipe group. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the usual meanings understood by persons with ordinary skills in the field to which the invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. The embodiments of the present application disclose a continuous fiber spinning tunnel system.

[0040] The core of the present invention is to provide a continuous fiber spinning tunnel system.

[0041] Please refer to Figure 1-Figure 3 The continuous fiber spinning tunnel system provided by the present invention comprises:

[0042] A material storage unit is connected to the nitrogen generator 1, and the material storage unit adopts a stainless steel tank 3;

[0043] The feeding unit comprises a gear metering pump 8, a feeding pipe 91 and three groups of discharging pipes 9, wherein the feeding pipe 91 connects the gear metering pump 8 and the storage unit;

[0044] The spinning unit includes three groups of spinning devices 11. One end of the three groups of discharge pipes 9 is connected to the gear metering pump 8, and the other end is connected to the three groups of spinning devices 11 one by one.

[0045] The corridor drying unit has a natural zone 16, an evaporation zone 17 and a solidification zone 18. A first corridor tube group 161, a second corridor tube group 171 and a third corridor tube group 181 are respectively arranged in the natural zone 16, the evaporation zone 17 and the solidification zone 18. The first corridor tube group 161, the second corridor tube group 171 and the third corridor tube group 181 each include three corridor tube sections. The corridor drying unit is connected to the spinning unit.

[0046] Specifically, the storage unit mainly uses a stainless steel tank 3 as a container for the spinning liquid raw material, and connects the front-end power part and the downstream feeding unit; the feeding unit mainly transports the spinning liquid to the downstream spinneret unit in a quantitative manner; the spinneret unit mainly extrude the spinning liquid stream through the spinneret hole into nascent fibers, and enters the tunnel drying unit, which mainly provides a suitable drying environment and solidifies the nascent fibers into fiber blanks.

[0047] It should be noted that the above-mentioned feed pipe 91 and discharge pipe 9 preferably use high-pressure braided tubes, the gear metering pump 8 is made of alloy material with high hardness and corrosion resistance, the specification of the gear metering pump 8 is 4.2cc / r, and the three groups of discharge pipes 9 are connected to the three groups of spinnerets 11 one by one to ensure that the discharge amount of the spinning liquid is consistent.

[0048] The continuous fiber spinning tunnel system provided by the present invention has a storage unit and a feeding unit which are controlled in a unified manner, thereby ensuring that each spinning unit is fed evenly and stably, and avoiding abnormal process control in the tunnel due to feed differences.

[0049] The spinning unit and the tunnel drying unit are controlled separately, and the three groups of spinning devices 11 have the same number of spinning holes, which can be 320 holes, 480 holes or 680 holes, etc. By setting the tunnel into three sections of the first tunnel tube group 161, the second tunnel tube group 171 and the third tunnel tube group 181, each tunnel tube group has three independent internal spaces, which is convenient for spinning process control, avoids the unstable internal temperature and humidity control caused by too many fiber bundles, and avoids the frequent breakage and dripping of the wire during the spinning process, effectively improves the continuous stability of the overall spinning, and can more stably reach the spinning scale of one thousand holes or more, thereby increasing the actual fiber yield.

[0050] The continuous fiber spinning tunnel system provided by the present invention is introduced in more detail below with reference to the accompanying drawings and specific embodiments.

[0051] In a specific embodiment, reference Figure 1 The material storage unit adopts a stainless steel tank 3, a power interface 6 is set on the tank top of the stainless steel tank 3, the output end of the nitrogen generator 1 is connected to the power interface 6, and a pressure regulating valve 2 is also set between the stainless steel tank 3 and the nitrogen generator 1 for pressure regulation.

[0052] Specifically, the nitrogen generator 1 connects nitrogen with a pressure of 0.75 MPa into the stainless steel tank 3 through the power interface 6, and uses the pressure-stabilizing regulating valve 2 to regulate the pressure, and squeezes the high-viscosity spinning solution into the feeding unit. Because nitrogen is an inert gas, the unstable viscosity and uniformity of the spinning solution caused by the use of compressed air is avoided.

[0053] It should be noted that the pressure regulating principle implemented by the pressure stabilizing regulating valve 2 is that the opening and closing parts in the pressure stabilizing regulating valve 2 can be adjusted, and the nitrogen flow through the pressure stabilizing regulating valve 2 is controlled by adjusting the opening and closing parts, thereby ensuring that the nitrogen pressure entering the stainless steel tank 3 is at the set value.

[0054] Based on any of the above embodiments, Figure 1 The top of the stainless steel tank 3 is also provided with an exhaust port 4 and a safety valve 5 , the bottom of the tank is provided with a discharge port 7 , and a gear metering pump 8 is connected to the discharge port 7 .

[0055] Specifically, the exhaust port 4 is used for exhaust, and the safety valve 5 can control the pressure in the stainless steel tank 3 not to exceed the specified value. When the nitrogen generator 1 introduces nitrogen into the stainless steel tank 3 through the pressure regulating valve 2, the safety valve 5 is in a normally closed state. When the pressure in the stainless steel tank 3 rises to exceed the specified value, the safety valve 5 will automatically open and discharge nitrogen to the outside of the stainless steel tank 3 to reduce the pressure and ensure safety. The weight of the safety valve 5 is preferably 15 kg. Under the action of nitrogen, the liquid in the stainless steel tank 3 is squeezed and supplied to the gear metering pump 8 through the discharge port 7.

[0056] Based on any of the above embodiments, Figure 2 The spinning unit further comprises an external supporting frame 28 , three groups of spinning devices 11 are fixedly installed in the external supporting frame 28 and are evenly distributed, and a pressure monitor 10 is installed in the spinning unit.

[0057] Specifically, the pressure monitor 10 is connected to a computer program, which can observe the rubber pressure change curve in real time, which is conducive to analyzing the state of the spinning solution.

[0058] Based on any of the above embodiments, Figure 1 The three corridor sections of the first corridor tube group 161 correspond one-to-one to the output ends of the three groups of spinning devices 11, the three corridor sections of the second corridor tube group 171 correspond one-to-one to the three corridor sections of the first corridor tube group 161 and are connected up and down, and the three corridor sections of the third corridor tube group 181 correspond one-to-one to the three corridor sections of the second corridor tube group 171 and are connected up and down.

[0059] Specifically, after the spinning liquid thin streams from the three groups of spinnerets 11 are squeezed into primary fibers through the spinnerets 11, the three primary fibers evenly enter the first corridor tube group 161 in the natural zone 16, and then pass through the second corridor tube group 171 in the evaporation zone 17 and the third corridor tube group 181 in the coagulation zone 18 in turn to coagulate the three primary fibers into fiber blanks.

[0060] Based on any of the above embodiments, Figure 1 The tunnel drying unit also includes four groups of annular blowing devices 12, which are respectively arranged between the natural zone 16 and the spinning unit, between the evaporation zone 17 and the natural zone 16, between the coagulation zone 18 and the evaporation zone 17, and at the bottom of the coagulation zone 18. An air inlet and outlet 13 are arranged on the outer side of each group of annular blowing devices 12.

[0061] Specifically, the thickness of the annular blowing device 12 is 200 mm, the inner diameter is 280 mm, and the outer diameter is 390 mm. Multiple layers of filters are arranged in the air chamber of the annular blowing device 12 to balance the airflow. The spinneret device 11 is located above the topmost annular blowing device 12 .

[0062] It should be noted that the number of the air inlet and outlet ports 13 of the annular blowing device 12 can be increased to four, which can effectively improve the stability and uniformity of the air flow.

[0063] Furthermore, the three sections of the second corridor tube group 171 arranged in the evaporation zone 17 are all porous corridor tubes. Each section of the porous corridor tube has small holes with a diameter of 5 mm evenly distributed, the hole spacing is 10 mm, the inner diameter of the porous corridor tube is 280 mm, the outer diameter is 284 mm, and the length is 2400 mm.

[0064] Based on any of the above embodiments, Figure 3 A shell 25, a heat-insulating layer 26 and a heating element 27 are provided in the evaporation zone 17. Three temperature zones matching the three corridor pipe sections of the second corridor pipe group 171 are formed in the shell 25. The heat-insulating layer 26 is provided on the inner side of the shell 25, and the heating element 27 and the corridor pipe sections are both installed in the temperature zones.

[0065] Specifically, the heating element can be a tracked ceramic heater or a far-infrared heater, etc., which can achieve precise control effects, are conducive to stable control of each temperature zone, small temperature fluctuations, and avoid uneven drying of fiber filaments to produce defects and affect the quality of the fiber blank.

[0066] Furthermore, the shell 25 is 3 mm thick, and flanges are connected at the upper and lower ends of the shell 25. A slot is provided on the disk surface, and the porous channel pipe is installed on the flange, which can facilitate the fixing and disassembly of the porous channel pipe and the replacement of the insulation layer 26 material and the heating element 27.

[0067] It should be noted that the structure of the three corridor pipe sections of the third corridor pipe group 181 in the solidification zone 18 is consistent with that of the evaporation zone 17 .

[0068] In this embodiment, the temperature range used in the tunnel drying unit is 30-100°C, wherein the evaporation zone 17 uses a lower temperature and the coagulation zone 18 uses a higher temperature, to ensure that after the primary fiber is pre-dried, the dryness and wetness of the filaments are moderate, and the fiber filaments will not stick together due to excessive moisture, nor will the fiber filaments be cracked during the subsequent stretching process due to excessive dryness, thereby causing defects and wire breakage.

[0069] Based on any of the above embodiments, Figure 1 A support frame 24 is provided in the natural area 16, and a first corridor pipe group 161 is installed on the support frame 24. The first corridor pipe group 161 has three corridor pipe sections, each of which has two detection holes. A temperature and humidity probe 14 and a monitoring probe 15 are respectively installed in the two detection holes.

[0070] Specifically, the temperature and humidity probe 14 and the monitoring probe 15 are controlled by a computer, which is convenient for observing the state of the primary fibers inside the tunnel pipe section. The process adjustment is controlled by PLC to ensure control accuracy.

[0071] Based on any of the above embodiments, Figure 1 , and also includes an oil coating unit, which is arranged at the output end of the tunnel drying unit. The oil coating unit is composed of three groups of oil tankers and positioning rings 19. The three groups of oil tankers and positioning rings 19 correspond one by one to the three tunnel pipe sections of the third tunnel pipe group 181.

[0072] Specifically, the oil tanker and the positioning ring 19 are arranged in cooperation to coat the pre-dried fiber blank and ensure the uniformity of the coating. At the same time, the oiled fiber filaments are bundled and then sent to the bundle twisting unit.

[0073] Based on any of the above embodiments, Figure 1 A yarn twisting unit is provided at the output end of the oil coating unit, and the yarn twisting unit consists of a bunching wheel feeding end 20, a twisting component 21, a bunching wheel output end 22 and a drafting roller 23. The bunching wheel feeding end 20 is connected to the oil coating unit, the twisting component 21 is arranged between the bunching wheel feeding end 20 and the bunching wheel output end 22, and the bunching wheel output end 22 is arranged between the twisting component 21 and the drafting roller 23.

[0074] Specifically, the fiber blank coated with oil is fed in a bundle, twisted, and a strand of fiber blank is output and pulled to the downstream equipment through the drafting roller 23; the rotation speed of the twisting component 21 is set to be distributed based on the pulling speed of the drafting roller 23, and the fiber blank is twisted with a low twist, which not only avoids damage to the fiber blank, but also increases the cohesion between the fiber bundles, avoids stratification, reduces hairiness, and achieves continuous and stable spinning.

[0075] The embodiment of the present application discloses a continuous fiber spinning tunnel system, wherein a spinning liquid raw material is placed in a stainless steel tank 3, a nitrogen generator 1 inputs nitrogen into the stainless steel tank 3, a high-viscosity spinning liquid in the stainless steel tank 3 is squeezed out from a discharge port 7, and is sent to a gear metering pump 8 through a feed pipe 91. The gear metering pump 8 divides the spinning liquid into three fixed-quantity strands, which are respectively sent to three groups of spinnerets 11 through a discharge pipe 9. The spinnerets 11 extrude a thin stream of the spinning liquid through a spinneret hole into a primary fiber, and then enter a tunnel drying unit. The primary fiber is sequentially discharged from a first tunnel pipe group 161 to a second tunnel pipe group 162. , the second corridor tube group 171 and the third corridor tube group 181, after passing through the natural zone 16, the evaporation zone 17 and the coagulation zone 18, the primary fibers are coagulated into fiber blanks, and then output from the corridor drying unit, and then the fiber blanks are coated with oil by the oil coating unit, the fiber filaments are gathered into a bundle, and enter the bundle twisting unit, under the cooperation of the bundling wheel feeding end 20, the twisting component 21 and the bundling wheel output end 22, multiple fiber strands are gathered into one bundle to increase the cohesion between the fiber bundles, and finally transported downstream through the drafting roller 23 for subsequent processing.

[0076] The above is a detailed introduction to a continuous fiber spinning tunnel system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A continuous fiber spinning tunnel system, characterized in that: include: A material storage unit connected to the nitrogen generator (1); A feeding unit, comprising a gear metering pump (8), a feeding pipeline (91) and three sets of discharging pipelines (9), wherein the feeding pipeline (91) connects the gear metering pump (8) and the storage unit; A spinning unit, comprising three groups of spinning devices (11), one end of each of the three groups of discharge pipes (9) being connected to the gear metering pump (8), and the other end being connected one by one to the three groups of spinning devices (11); A tunnel drying unit comprises a natural zone (16), an evaporation zone (17) and a coagulation zone (18); a first tunnel tube group (161), a second tunnel tube group (171) and a third tunnel tube group (181) are respectively arranged in the natural zone (16), the evaporation zone (17) and the coagulation zone (18); the first tunnel tube group (161), the second tunnel tube group (171) and the third tunnel tube group (181) each comprise three tunnel tube sections; the tunnel drying unit is connected to the spinning unit; The three corridor sections of the first corridor tube group (161) correspond one-to-one to the output ends of the three groups of spinnerets (11); the three corridor sections of the second corridor tube group (171) correspond one-to-one to the three corridor sections of the first corridor tube group (161) and are connected vertically; and the three corridor sections of the third corridor tube group (181) correspond one-to-one to the three corridor sections of the second corridor tube group (171) and are connected vertically; The evaporation zone (17) is provided with a shell (25), a heat-insulating layer (26) and a heating element (27); three temperature zones are formed in the shell (25) and are matched with the three sections of the corridor pipe segments of the second corridor pipe group (171); the heat-insulating layer (26) is arranged on the inner side of the shell (25); and the heating element (27) and the corridor pipe segments are both installed in the temperature zones; A support frame (24) is provided in the natural area (16), and the first channel pipe group (161) is installed on the support frame (24). The three channel pipe sections of the first channel pipe group (161) are respectively provided with two detection holes, and the two detection holes are respectively installed with a temperature and humidity probe (14) and a monitoring probe (15).

2. A continuous fiber spinning tunnel system according to claim 1, characterized in that: The material storage unit is a stainless steel tank (3), the tank top of the stainless steel tank (3) is provided with a power interface (6), the output end of the nitrogen generator (1) is connected to the power interface (6), and a pressure regulating valve (2) is further provided between the stainless steel tank (3) and the nitrogen generator (1), the pressure regulating valve (2) being used for pressure regulation.

3. A continuous fiber spinning tunnel system according to claim 2, characterized in that: The top of the stainless steel tank (3) is also provided with an exhaust port (4) and a safety valve (5), and the bottom of the tank is provided with a discharge port (7), and the gear metering pump (8) is connected to the discharge port (7).

4. A continuous fiber spinning tunnel system according to claim 1, characterized in that: The spinning unit further comprises an external support frame (28), three groups of spinning devices (11) are fixedly installed in the external support frame (28) and are evenly distributed, and the spinning unit is equipped with a pressure monitor (10).

5. A continuous fiber spinning tunnel system according to claim 1, characterized in that: The tunnel drying unit further comprises four groups of annular blowing devices (12), the four groups of annular blowing devices (12) being respectively arranged between the natural zone (16) and the spinning unit, between the evaporation zone (17) and the natural zone (16), between the coagulation zone (18) and the evaporation zone (17), and at the bottom end of the coagulation zone (18), and each group of the annular blowing devices (12) is provided with an air inlet and outlet (13) on the outer side.

6. A continuous fiber spinning tunnel system according to any one of claims 1 to 5, characterized in that: It also includes an oil coating unit, which is arranged at the output end of the tunnel drying unit, and the oil coating unit is composed of three groups of oil tankers and positioning rings (19). The three groups of oil tankers and positioning rings (19) correspond one-to-one to the three tunnel pipe sections of the third tunnel pipe group (181).

7. A continuous fiber spinning tunnel system according to claim 6, characterized in that: The output end of the oil coating unit is provided with a yarn bundle twisting unit, and the yarn bundle twisting unit is composed of a bunching wheel feeding end (20), a twisting component (21), a bunching wheel output end (22) and a drafting roller (23). The bunching wheel feeding end (20) is connected to the oil coating unit, the twisting component (21) is arranged between the bunching wheel feeding end (20) and the bunching wheel output end (22), and the bunching wheel output end (22) is arranged between the twisting component (21) and the drafting roller (23).

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