Suspension bridge main cable with dehumidification structure and dehumidification method

Abstract

The invention discloses a suspension bridge main cable with a dehumidification structure and a dehumidification method, the suspension bridge main cable comprises a cable strand, a winding wire and a wrapping tape, the winding wire is wound outside the cable strand, and the wrapping tape is wound outside the winding wire; each dehumidification assembly comprises a dehumidification inner cylinder and a shell, the inner cylinder is fixedly connected with a convex column, the convex column and the shell are integrally formed, an airflow channel is formed between the convex column and the shell, the shell is provided with a second through hole matched with the channel, one end of the channel is communicated with a negative pressure dehumidification mechanism, a moisture absorption layer is arranged outside the shell, and a heating pipe is fixedly connected in the moisture absorption layer; a one-way nozzle and a sliding movable dehumidification assembly are arranged in the inner cylinder, and the assembly sprays a dehumidification medium to the main cable through the nozzle. Compared with the prior art, dry gas can penetrate through the main cable, targeted drying is achieved, false dehumidification is avoided, and the situation that the service life of the main cable is shortened due to moisture is prevented.

Description

Technical Field

[0001] This invention belongs to the field of suspension bridge main cable technology, specifically relating to a suspension bridge main cable with a dehumidification structure and a dehumidification method. Background Technology

[0002] In the design and construction of suspension bridges, the main cable structure, as a core component, plays a crucial role in ensuring the overall safety and service life of the bridge. However, the humid environment inside the main cable poses a significant threat to the bridge's safety. Prolonged exposure to a humid environment makes the steel wires inside the main cable susceptible to corrosion and fatigue damage, severely impacting the structural integrity of the bridge. While some existing dehumidification methods can reduce the humidity on the surface of the main cable, structural barriers and flow resistance prevent dry air from penetrating the closed channels inside the cable, resulting in poor dehumidification effects and leaving numerous un-penetrated damp areas. This not only increases the bridge's maintenance costs and risks but also significantly shortens the service life of the main cable.

[0003] Specifically, existing dehumidification technologies typically only penetrate dry gas to the surface of the main cable by about 5-10 millimeters, covering approximately 30% of the overall cross-section. Even increasing the supply pressure to 0.3 MPa cannot effectively remove more than 70% of the damp areas inside the main cable, leaving these areas with relative humidity exceeding the 60% corrosion threshold, creating a false dehumidification effect. These deep-seated damp areas continuously damage the passivation film on the steel wires, generating ferric hydroxide corrosion products that expand 3-5 times in volume, leading to rust stress and accelerating wear and crack formation. Initially, these corrosion phenomena are not obvious externally; by the time they are detected, serious wire breakage problems have often already occurred, increasing the difficulty and cost of bridge maintenance.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a main cable for a suspension bridge with a dehumidification structure and a dehumidification method, which can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: A suspension bridge main cable with a dehumidification structure includes winding wire, wrapping tape, and multiple strands. The winding wire is wound around the outside of the multiple strands, and the wrapping tape is wound around the outside of the winding wire. It also includes several dehumidification components located within the multiple strands. Each dehumidification component includes a dehumidification inner cylinder and a dehumidification outer shell. The dehumidification inner cylinder is located inside the dehumidification outer shell, and a protruding post is fixedly connected to it. The protruding post and the dehumidification outer shell are integrally formed. An airflow channel is formed between the dehumidification inner cylinder and the dehumidification outer shell. A second through hole matching the airflow channel is opened on the dehumidification outer shell. One end of the airflow channel is connected to a negative pressure dehumidification mechanism. A moisture-absorbing layer for adsorbing moisture is provided on the outside of the dehumidification outer shell. A heating tube is fixedly connected inside the moisture-absorbing layer. A one-way nozzle is provided inside the dehumidification inner cylinder. A movable dehumidification component is slidably connected inside the dehumidification inner cylinder. The movable dehumidification component sprays a dehumidifying medium onto the suspension bridge main cable through the one-way nozzle.

[0007] In one or more embodiments of the present invention, the dehumidifying medium comprises a gaseous ion-releasing agent formed by a multi-component mixed system. The gaseous ion-releasing agent comprises a slow-release carrier, a negative ion generator, a stabilizer, and a corrosion inhibitor. The slow-release carrier is a mixture of isopropanol and ethylene glycol dimethyl ether, used for slow volatilization and to drive the diffusion of other components. The negative ion generator is a mixture of tetrabutylammonium chloride and isoamyl nitrite, which ionizes during volatilization to generate... , The stabilizer is a mixture of vitamin E and di-tert-butyl-p-cresol, used to prevent the negative ion generator from oxidizing and failing; the corrosion inhibitor is benzotriazole, used to react with the steel wire surface. A chelate membrane is formed.

[0008] In one or more embodiments of the present invention, a plurality of guiding mechanisms are included for guiding the movement of a gaseous ion-release agent within the main cable of a suspension bridge. The plurality of guiding mechanisms are distributed within the main cable of the suspension bridge and located outside the dehumidification assembly. Each guiding mechanism includes a soft filament outer tube and a soft filament inner tube located inside the soft filament outer tube. The soft filament inner tube is slidably connected to the inside of the soft filament outer tube. A plurality of optical fibers are fixedly connected to the soft filament outer tube. A plurality of detection windows matching the optical fibers are indirectly disposed on the optical fibers. A light-transmitting portion matching the detection windows is fixedly connected to the soft filament outer tube. An optical fiber detector matching the optical fibers is disposed at one end of the main cable of the suspension bridge.

[0009] In one or more embodiments of the present invention, a first wire is fixedly connected inside the soft filament inner tube, a plurality of mounting slots are indirectly opened on the soft filament inner tube, an electromagnet matching the mounting slots is installed on the soft filament inner tube, a first controller is fixedly connected to the electromagnet, and the first controller and the first wire are electrically connected.

[0010] In one or more embodiments of the present invention, the unidirectional nozzle includes a flow-dividing section, the dehumidifying inner cylinder has a protrusion matching the flow-dividing section, and the protrusion communicates with the interior of the dehumidifying inner cylinder, the interior of the dehumidifying inner cylinder is fixedly connected to a mounting bracket matching the protrusion, the middle part of the mounting bracket is fixedly connected to an annular sleeve, a connecting column is slidably connected inside the annular sleeve, the end of the mounting bracket away from the flow-dividing section is fixedly connected to a first baffle, the first baffle has a fourth through hole, the connecting column is fixedly connected to a blocking ball matching the fourth through hole, a spring is sleeved on the connecting column, and the spring is located between the annular sleeve and the blocking ball.

[0011] In one or more embodiments of the present invention, the mobile dehumidification assembly includes a micro-pipe robot, one end of which is fixedly connected to a connecting pipe, and the end of the micro-pipe robot away from the connecting pipe is fixedly connected to a nozzle that matches the connecting pipe, and the end of the connecting pipe away from the micro-pipe robot is provided with a winder.

[0012] In one or more embodiments of the present invention, the number of the micro-pipe robots is two, and the opposing surfaces of the two micro-pipe robots are fixedly connected with a second baffle, and the two nozzles are arranged opposite to each other.

[0013] In one or more embodiments of the present invention, a pair of insulating parts are fixedly connected inside the micro-pipe robot, and a flexible conductive sheet is fixedly connected inside the pair of insulating parts. An elastic rod is fixedly connected to the lower end of the micro-pipe robot, and a mounting base is fixedly connected to the elastic rod. A conductive bearing matching the flexible conductive sheet is mounted on the mounting base. A second wire is fixedly connected to the conductive bearing. A second controller is fixedly connected to the end of the second wire away from the conductive bearing. A third wire matching the micro-pipe robot is fixedly connected to the second controller. The micro-pipe robot and the third wire are electrically connected.

[0014] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: A method for dehumidifying the main cable of a suspension bridge with a dehumidification structure includes the following steps: S1. The guiding mechanism and dehumidification component are embedded in the cable strand along the axial direction of the main cable of the suspension bridge. The dehumidification component is located in the middle of the main cable of the suspension bridge, and the multiple guiding mechanisms are located outside the dehumidification component. S2. The guiding mechanism continuously collects the humidity values ​​of each area of ​​the main cable and transmits the data to the signal demodulation unit every 20 to 50 seconds. After parsing, a humidity distribution heat map is generated. The main control unit determines the high humidity risk area through a preset algorithm and locates its three-dimensional coordinates. S3. The main control unit outputs an adjustment current to the array electromagnet corresponding to the high humidity risk area to generate a 0.3-1.0T directional magnetic field. The dehumidification component synchronously sprays dehumidification medium into the high humidity risk area. Under the action of the magnetic field, the magnetically modified dehumidification medium migrates directionally to the high humidity area.

[0015] In one or more embodiments of the present invention, the main control unit generates a dehumidification effect report every month, which includes the distribution of high humidity risk areas, cumulative dehumidification time and media consumption. When a high humidity risk area is dehumidified more than 50 times a year, it is marked as a key maintenance area.

[0016] Compared with the prior art, the present invention provides a suspension bridge main cable with a dehumidification structure and a dehumidification method, which allows dry gas to penetrate the suspension bridge main cable and can specifically dry the suspension bridge main cable, avoiding false dehumidification and preventing the main cable's service life from being shortened due to moisture problems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a suspension bridge main cable with a dehumidification structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the guiding mechanism in one embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a cross-sectional view of the guiding mechanism in one embodiment of the present invention; Figure 5 This is a schematic diagram of the dehumidification component in one embodiment of the present invention; Figure 6 This is a cross-sectional view of a dehumidification component according to an embodiment of the present invention. Figure 1 ; Figure 7 for Figure 6 Schematic diagram of the structure at point B; Figure 8 This is a cross-sectional view of a dehumidification component according to an embodiment of the present invention. Figure 2 ; Figure 9 for Figure 8 Schematic diagram of the structure at point C; Figure 10This is a cross-sectional view of a dehumidification component according to an embodiment of the present invention. Figure 3 ; Figure 11 This is a schematic diagram of the structure of the conductive bearing in one embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a flexible conductive sheet in one embodiment of the present invention.

[0019] Explanation of key figure labels: 1. Strand; 2. Winding filament; 3. Wrapping tape; 4. Guiding mechanism; 5. Soft filament outer cylinder; 501. Detection window; 6. Light-transmitting part; 7. Optical fiber; 8. Soft filament inner cylinder; 801. Mounting groove; 9. First conductor; 10. First controller; 11. Electromagnet; 12. Dehumidification assembly; 13. Dehumidification inner cylinder; 1301. Protruding post; 13011. First through hole; 14. Dehumidification outer shell; 1401. Second through hole; 15. Airflow channel; 16. Diverter; 17. Mounting bracket; 1701. Third through hole; 1702. 18. Annular sleeve; 19. Connecting post; 20. Spring; 21. Blocking ball; 22. First baffle; 2101. Fourth through hole; 23. Movable dehumidification component; 24. Miniature pipeline robot; 25. Insulation part; 26. Soft conductive sheet; 27. Copper wire; 28. Elastic rod; 29. ​​Mounting base; 20. Conductive bearing; 21. Conductive protrusion; 22. Second wire; 33. Second controller; 34. Third wire; 35. Connecting pipe; 36. Nozzle; 37. Moisture-absorbing layer; 38. Heating tube; 39. Second baffle. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0021] like Figure 1 As shown, a suspension bridge main cable with a dehumidification structure in one embodiment of the present invention includes a winding wire 2, a wrapping tape 3, and multiple strands 1. The winding wire 2 is wound around the outside of the multiple strands 1, and the wrapping tape 3 is wound around the outside of the winding wire 2.

[0022] like Figure 1As shown, several dehumidification components 12 are installed inside the main cable of the suspension bridge. Multiple guiding mechanisms 4 are also installed inside the main cable. These guiding mechanisms 4 can detect areas inside the main cable that require dehumidification. Based on the detection results from the guiding mechanisms 4, the dehumidification components 12 spray dehumidifying media into the corresponding areas. Different concentrations and pressures of dehumidifying media are sprayed according to the specific conditions of the areas requiring dehumidification, achieving differentiated dehumidification within the main cable. This avoids the problem of poor dehumidification efficiency caused by a uniform dehumidification method, and also avoids the waste of dehumidifying media, which is beneficial for energy conservation and environmental protection.

[0023] In addition, the guiding mechanism 4 can also adsorb ions. When positive or negative ions are added to the dehumidifying medium, the guiding mechanism 4 can adsorb these positive or negative ions, forcing the dehumidifying medium sprayed from the dehumidifying component 12 to move in the direction of the guiding mechanism 4. Under the action of magnetic force, the dehumidifying medium can move precisely, thereby achieving precise dehumidification. For some gaps that are difficult to pass through, it is also beneficial for the dehumidifying medium to pass through, thereby reaching the dehumidification destination and avoiding moisture blind spots.

[0024] like Figures 1-4 As shown, the guiding mechanism 4 includes a soft filament outer tube 5, which is tubular, and a soft filament inner tube 8 is slidably connected inside the soft filament outer tube 5. The soft filament outer tube 5 is arranged along the axial direction of the main cable of the suspension bridge, and it has strong resistance to deformation, so that it does not undergo severe deformation under the compression of the cable strands 1 and the winding wires 2. The material of the soft filament outer tube 5 can be one of maraging steel, titanium alloy, or nickel-based high-temperature alloy.

[0025] Specifically, the soft filament inner tube 8 mainly serves an insulating function, and it is made of an elastic and insulating material, such as insulating rubber. The combination of the soft filament inner tube 8 and the soft filament outer tube 5 can adapt to the deformation of the main cable of the suspension bridge during use.

[0026] like Figures 1-4 As shown, multiple optical fibers 7 are fixedly connected to the flexible filament outer cylinder 5. These fibers 7 are arranged circumferentially on the flexible filament outer cylinder 5, and an optical fiber detector is fixedly connected to one end of each fiber 7. The optical fiber detector is used to receive and analyze optical fiber signals. Multiple detection windows 501, matching the optical fibers 7, are opened on the flexible filament outer cylinder 5. The optical fibers 7 pass through the interior of the flexible filament outer cylinder 5, and the detection windows 501 allow a portion of the optical fiber 7 inside the flexible filament outer cylinder 5 to protrude. This protruding portion of the optical fiber 7 detects the area around the main cable of the suspension bridge. To ensure that the protruding portion of the optical fiber 7 is not damaged, a light-transmitting part 6, matching the detection window 501, is fixedly connected to the flexible filament outer cylinder 5. The light-transmitting part 6 can be made of polycarbonate, polymethyl methacrylate, or acrylic acid. The light-transmitting part 6 both protects the optical fiber 7 from damage and allows the light signal to pass through efficiently.

[0027] like Figures 1-4 As shown, a first conductor 9 is threaded through the interior of the soft filament inner cylinder 8. Multiple mounting slots 801 are formed along the axial direction of the main cable of the suspension bridge in the soft filament inner cylinder 8. The gaps between the multiple mounting slots 801 are equal. An electromagnet 11 and a first controller 10 for controlling the electromagnet 11 are installed in the mounting slots 801. The first conductor 9 and the first controller 10 are electrically connected, and the multiple first controllers 10 are arranged in parallel. The magnetic field strength of the electromagnet 11 is 0.2–0.8 T, and the magnetic field strength is adjustable. The first controller 10 can be used to receive signals output by the fiber optic detector and drive the electromagnets in the corresponding areas to activate or enhance the magnetic field.

[0028] When the dehumidification component 12 sprays out a dehumidifying medium containing negative ions, the first controller 10 controls the electromagnet 11 to attract the dehumidifying medium containing negative ions. The sprayed dehumidifying medium moves towards the electromagnet 11. Under the guidance of the magnetic force, the dehumidifying medium can pass through gaps that cannot be passed by air jet, expanding the diffusion range of the dehumidifying medium and improving the dehumidification effect of the main cable of the suspension bridge. In addition, targeted dehumidification is achieved under the guidance of the magnetic force, allowing for targeted dehumidification of dehumidification blind spots and ensuring the internal dryness of the main cable of the suspension bridge.

[0029] Specifically, the dehumidifying medium is dry air, which contains charged ions. When the dehumidifying medium is ejected, it is subjected to the Lorentz force under the influence of a magnetic field. The direction of the Lorentz force is always perpendicular to the direction of ion movement; it does not accelerate the ions but only changes their path, forcing the dry air to move in one direction within the main cable of the suspension bridge. To accelerate the ions and thus guide the dry air, an electric field can be used inside the main cable to accelerate the ion movement, but it must be ensured that this electric field does not affect the main cable of the suspension bridge.

[0030] In other words, wind carrying ions needs an electric field to accelerate the ions, and the wind carrying ions is guided by a magnetic field so that it can quickly and accurately reach the dehumidification location.

[0031] like Figures 5-10 As shown, the dehumidification assembly 12 includes a dehumidification inner cylinder 13 and a dehumidification outer shell 14. The dehumidification inner cylinder 13 is located inside the dehumidification outer shell 14, and a protrusion 1301 matching the dehumidification outer shell 14 is fixedly connected to the dehumidification inner cylinder 13. The dehumidification inner cylinder 13 and the dehumidification outer shell 14 are fixedly connected by the protrusion 1301. A moisture-absorbing layer 34 is sleeved on the outside of the dehumidification outer shell 14. The moisture-absorbing layer 34 can absorb moisture near the outside of the dehumidification outer shell 14, and a heating pipe 35 for heating the moisture-absorbing layer 34 is fixedly connected to the outer wall of the dehumidification outer shell 14. The moisture-absorbing layer 34 can be dried by heating the heating pipe 35.

[0032] To prevent moisture from escaping during the drying process, such as Figures 5-10 As shown, an airflow channel 15 is formed between the dehumidifying inner cylinder 13 and the dehumidifying outer shell 14. A second through hole 1401 connected to the airflow channel 15 is provided on the dehumidifying outer shell 14. One end of the airflow channel 15 is connected to a negative pressure dehumidification mechanism. During the drying process of the heating tube 35 by the second baffle 36, the negative pressure dehumidification mechanism is activated. The moisture generated during drying is absorbed by the negative pressure dehumidification mechanism to prevent moisture leakage and to prevent the moisture generated during heating from causing secondary impact on the main cable of the suspension bridge.

[0033] like Figures 5-10 As shown, a one-way nozzle matching the protrusion 1301 is fixedly connected to the dehumidifying inner cylinder 13. The one-way nozzle is arranged along the axial direction of the dehumidifying inner cylinder 13 and is arranged in a ring. The interior of the dehumidifying inner cylinder 13 forms a first dehumidifying medium flow channel, and the one-way nozzle can spray the dehumidifying medium from the first dehumidifying medium flow channel outward onto the main cable of the suspension bridge.

[0034] Specifically, such as Figures 6-7 As shown, the unidirectional nozzle includes a diverting section 16. A first through-hole 13011 matching the diverting section 16 is provided on the dehumidifying inner cylinder 13. The diverting section 16 is installed inside the protrusion 1301. The diverting section 16 can divert the dehumidifying medium sprayed from the first through-hole 13011, allowing the dehumidifying medium to be more dispersed within the main cable of the suspension bridge. A mounting bracket 17 is also fixedly connected to the inner wall of the first through-hole 13011. An annular sleeve 1702 is fixedly connected to the middle of the mounting bracket 17. A connecting post 18 is slidably connected to the annular sleeve 1702. A blocking ball 20 is fixedly connected to the end of the connecting post 18 away from the diverting section 16. A first baffle 21 matching the blocking ball 20 is fixedly connected to the protrusion 1301, and a fourth through-hole 2101 matching the blocking ball 20 is provided on the first baffle 21.

[0035] Furthermore, such as Figures 6-7 As shown, a spring 19 is fitted onto the connecting column 18. The spring 19 is located between the blocking ball 20 and the mounting bracket 17. When the air pressure in the first dehumidification medium flow channel is too high, the spring 19 deforms, creating a gap between the blocking ball 20 and the fourth through hole 2101. The first dehumidification medium flows out through this gap. The mounting bracket 17 has multiple third through holes 1701 for the dehumidification medium to pass through. After passing through the third through holes 1701, the dehumidification medium is discharged into the interior of the main cable of the suspension bridge through the diversion part 16. Then, the dehumidification medium is guided by the guiding mechanism 4 to reach the position where dehumidification is required.

[0036] To reduce the loss caused by the movement of ions within the dehumidifying inner cylinder 13, such as Figures 8-12As shown, a movable dehumidification assembly 22 is installed inside the dehumidification inner cylinder 13. The movable dehumidification assembly 22 includes two micro-pipe robots 23, which are symmetrically installed and can move inside the dehumidification inner cylinder 13. Second baffles 36 are fixedly connected to the opposite surfaces of the micro-pipe robots 23. The movement of the two micro-pipe robots 23 inside the dehumidification inner cylinder 13 can control the distance between the two second baffles 36. A second dehumidification medium flow channel is formed between the two second baffles 36 and the dehumidification inner cylinder 13, and the second dehumidification medium flow channel is formed inside the first dehumidification medium flow channel.

[0037] like Figures 8-12 As shown, a nozzle 33 is fixedly connected to the opposite surface of the micro-pipe robot 23. A connecting pipe 32 is fixedly connected to the end of the micro-pipe robot 23 away from the nozzle 33. A winder is installed on the outside of the main cable of the suspension bridge on the connecting pipe 32. The winder mainly winds the connecting pipe 32 and can also push the micro-pipe robot 23 using the connecting pipe 32, allowing the micro-pipe robot 23 to slide inside the dehumidifying inner cylinder 13, thereby controlling the distance between the two second baffles 36.

[0038] To enable the micro-pipe robot 23 to move actively within the dehumidifying inner cylinder 13, a pair of insulating parts 24 are fixedly connected inside the dehumidifying inner cylinder 13. Flexible conductive sheets 25 are fixedly connected to the insulating parts 24. An elastic rod 26 is fixedly connected to the lower part of the micro-pipe robot 23. A mounting base 27 is fixedly connected to the end of the elastic rod 26 away from the micro-pipe robot 23. A conductive bearing 28, made of copper, is mounted on the mounting base 27. The conductive bearing 28 and the flexible conductive sheet 25 are in a rolling connection. The pair of flexible conductive sheets 25 are the neutral and live wires, respectively. The two conductive bearings 28 correspond to the neutral and live wires. A second wire 29, matching the inner ring of the conductive bearing 28, is fixedly connected to the mounting base 27. A second controller 30 is fixedly connected to the end of the second wire 29 away from the conductive bearing 28. A third wire 30, matching the micro-pipe robot 23, is fixedly connected to the second controller 30. The second controller 30 controls whether to supply electrical energy to the micro-pipe robot 23.

[0039] To increase the friction between the conductive bearing 28 and the flexible conductive sheet 25, such as Figures 11-12 As shown, multiple conductive bumps 2801 are fixedly connected to the conductive bearing 28, and the flexible conductive sheet 25 is woven from multiple copper wires 2501. The conductive bumps 2801 and the multiple copper wires 2501 are used to increase the friction between the conductive bearing 28 and the flexible conductive sheet 25, so that the conductive bearing 28 rolls on the flexible conductive sheet 25 instead of sliding, thereby reducing friction and reducing wear.

[0040] Specifically, when the guiding mechanism 4 detects that a certain area needs drying, the micro-pipeline robot 23 moves to that area, allowing the two second baffles 36 to form a second dehumidification medium flow channel. The micro-pipeline robot 23 then delivers the dehumidification medium into this channel. Due to the presence of the neutral and live wires, an electric field is generated in the second dehumidification medium flow channel. This electric field accelerates ions, which collide with surrounding neutral air molecules countless times during their flight, transferring momentum to the air molecules and thus driving airflow, forming an ion wind. After the ion wind is discharged, the guiding mechanism 4 guides it to a designated location.

[0041] When the aforementioned suspension bridge main cable with dehumidification structure is in use, the internal condition of the main cable is first detected by optical fiber 7. Based on the feedback from the optical fiber detector, the area requiring dehumidification is determined. The micro-pipeline robot 23 moves according to this area until the two second baffles 36 cover the one-way nozzles in that area. Then, the dehumidification medium is discharged through the connecting pipe 32 and the nozzle 33. The ions in the dehumidification medium form an ion wind under the electric field created by the neutral wire and the thermal power. This ion wind is ejected from the one-way nozzle and, guided by the electromagnet 11, is blown to the designated location.

[0042] In another embodiment, unlike the embodiments described above, the dehumidifying medium includes a gaseous ion-releasing agent formed by a multi-component mixture. This gaseous ion-releasing agent includes a release carrier, a negative ion generator, a stabilizer, and a corrosion inhibitor. The release carrier is a mixture of isopropanol and ethylene glycol dimethyl ether, used for slow evaporation and to drive the diffusion of other components. The negative ion generator is a mixture of tetrabutylammonium chloride and isoamyl nitrite, which ionizes during evaporation to generate Cl₂. - NO2 - The stabilizer is a mixture of vitamin E and di-tert-butyl-p-cresol, used to prevent the negative ion generator from oxidizing and failing. The corrosion inhibitor is benzotriazole, used to react with the Fe on the steel wire surface. 2+ A chelate membrane is formed.

[0043] The gaseous nature of gaseous ion-release agents is essentially based on the gaseous volatilization of the release carrier as a transport medium, which carries other non-gaseous components to diffuse in molecular or ionic form within the gaps of strand 1. This approach ensures both penetration into the tiny gaps of strand (1) and avoids the problem of easy loss of pure gaseous ions.

[0044] A gaseous ion-releasing agent is added to dry air, which dries the main cable of the suspension bridge. Through physical barriers and chemical modification, the gaseous ion-releasing agent prevents the steel wire from contacting corrosive media at the source, thus avoiding electrochemical corrosion.

[0045] Specifically, the volatilization of gaseous ion-release agents produces , Negative ions, guided by the magnetic field of the magnetic block, form a monolayer-thick adsorption film on the surface of the steel wire. This adsorption film tightly covers the active sites on the surface of the steel wire, acting as a barrier to block direct contact between oxygen and water molecules and the steel wire, thus cutting off the supply of reactants for the corrosion reaction from space.

[0046] negative ions It will react with the steel wire surface caused by initial micro-corrosion. A chemical reaction occurs: , generated It is a dense passivation film that adheres firmly to the surface of the steel wire. Even if the physical adsorption layer is partially damaged, the passivation film can still continuously prevent corrosion from spreading. Meanwhile, the corrosion inhibitor benzotriazole in the gaseous ion-release agent reacts with... form The chelate membrane further fills the tiny pores in the passivation membrane, enhancing the protective tightness.

[0047] In addition, the main cable of a suspension bridge is made of multiple strands of steel wire twisted together, with a large number of tiny gaps between the strands. Traditional liquid corrosion inhibitors, due to their high viscosity and high surface tension, have difficulty penetrating into these deep gaps, and solid corrosion inhibitors are even less able to diffuse. However, the gaseous and volatile form of gaseous ionic corrosion inhibitors precisely solves this problem. The carrier of the gaseous ion slow-release agent has a low boiling point and can slowly volatilize into gas at room temperature. Its molecular diameter is only 0.1~0.3nm, which is much smaller than the gap between strand 1 and can freely penetrate the deep gap of strand 1. Even in the dead zones of the stranded cable, negative ions in gaseous form can diffuse and penetrate effectively, avoiding the inconsistency between the outer and inner layers of protection found in traditional solutions, where the outer layer provides adequate protection but the inner steel wires corrode. This achieves complete coverage protection for all steel wires in the main cable of the suspension bridge. It eliminates the need to disassemble the main cable of the suspension bridge, perfectly adapting to the complex structure, difficult maintenance, and harsh environment of the main cable in suspension bridges.

[0048] A dehumidification method for the main cable of a suspension bridge with a dehumidification structure according to an embodiment of the present invention includes the following steps: S1. The guide mechanism 4 and the dehumidification component 12 are buried in the cable strand 1 along the axial direction of the main cable of the suspension bridge. The dehumidification component 12 is located in the middle of the main cable of the suspension bridge, and multiple guide mechanisms 4 are located outside the dehumidification component 12. The method for determining the position of 4 satisfies: Axial position: The spacing d along the main cable axis is determined by Formula 1; Formula 1 in, The diameter of the main cable's single strand 1 is 5~15mm. , where is the gap width of strand 1, ranging from 1 to 3 mm, and k is a correction factor.

[0049] Circumferential positioning: Within the cross-section of the main cable of the suspension bridge, it is arranged at equal intervals θ along the twisting trajectory of strand 1, where θ is determined by formula two: Formula 2 Where n is the number of strands 1 in the cross-section of the main cable, and the circumferential angle deviation between adjacent guiding mechanisms 4 is ≤ ±1°.

[0050] Radial position: The distance s between the sensing end of the guide mechanism 4 and the surface of the strand 1 satisfies s=0.5×δ, ensuring that it does not contact the steel wire and is located in the center area of ​​the strand gap.

[0051] S2 and the guiding mechanism 4 continuously collect humidity values ​​in various areas of the main cable and transmit the data to the signal demodulation unit every 20-50 seconds. After analysis, a humidity distribution heat map is generated. The main control unit determines the high humidity risk area through a preset algorithm and locates its three-dimensional coordinates. Specifically, the guiding mechanism 4 collects humidity values ​​for each area of ​​the main cable of the suspension bridge every 20-50 seconds, transmits them to the signal demodulation unit to generate a humidity distribution heat map, and the main control unit determines high-humidity risk areas through a preset algorithm. The three-dimensional coordinates x, y, and z are calculated using formula three: Formula 3 Where L is the total length of the main cable, i is the axial layout number (1≤i≤N), N is the total number of guiding mechanisms, r is the cross-sectional radius of the main cable, and θ is the circumferential angle.

[0052] S3. The main control unit outputs an adjustment current to the array electromagnet corresponding to the high humidity risk area, generating a 0.3~1.0T directional magnetic field. The dehumidification component 12 synchronously sprays dehumidification medium into the high humidity risk area. Under the action of the magnetic field, the magnetically modified dehumidification medium migrates directionally to the high humidity area.

[0053] Specifically, the main control unit outputs a regulating current I to the array electromagnet corresponding to the high humidity risk area, satisfying B=kI, where B is the magnetic field strength (0.3-1.0T) and k is the permeability coefficient of the electromagnet, generating a directional magnetic field; the dehumidification component 12 simultaneously sprays dehumidifying medium into the area, and the migration rate v of the medium in the magnetic field satisfies v=k1×B×c, where k1 is the medium migration coefficient and c is the medium concentration, thus achieving directional dehumidification.

[0054] The main control unit generates a dehumidification effect report every month. When a high-humidity risk area is dehumidified more than 50 times a year, it is automatically marked as a key maintenance area, and the axial spacing d of the guide mechanism in that area is reduced by 30% according to Formula 1, i.e., d'=0.7d, in order to increase the detection density.

[0055] The main control unit generates a monthly dehumidification effect report, which includes the distribution of high humidity risk areas, cumulative dehumidification time, and media consumption. When a high humidity risk area is dehumidified more than 50 times a year, it is marked as a key maintenance area.

[0056] The aforementioned dehumidification method achieves comprehensive humidity detection across the entire main cable area through a scientifically designed guidance mechanism, avoiding missed detections in high-humidity risk areas. Relying on precise humidity monitoring and positioning logic, it can quickly pinpoint high-humidity potential points, eliminating the need for blind dehumidification of the entire main cable area and significantly improving the targeting of dehumidification. By using a magnetic field to guide the directional migration of the dehumidification medium, the medium can be precisely applied to high-humidity areas, reducing waste while enhancing the dehumidification effect, and without interfering with the normal structure and stress of the main cable.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A main cable of a suspension bridge having a dehumidifying structure, comprising a wrapping wire, a wrapping tape, and a plurality of groups of strands, the wrapping wire being wrapped outside the plurality of groups of strands, and the wrapping tape being wrapped outside the wrapping wire, characterized in that, Also include: A plurality of dehumidification components, a plurality of the dehumidification components are located in a plurality of cable strands, the dehumidification components include a dehumidification inner cylinder and a dehumidification shell, the dehumidification inner cylinder is located inside the dehumidification shell, the dehumidification inner cylinder is fixedly connected with a convex column, the convex column is integrally formed with the dehumidification shell; The dehumidification inner cylinder and the dehumidification shell form an air flow channel, the dehumidification shell is provided with a second through hole matched with the air flow channel, one end of the air flow channel is communicated with a negative pressure dehumidification mechanism; The outer part of the dehumidification shell is provided with a moisture absorbing layer for absorbing moisture, the moisture absorbing layer is fixedly connected with a heating pipe; The dehumidification inner cylinder is provided with a one-way nozzle, the inside of the dehumidification inner cylinder is slidably connected with a movable dehumidification component, the movable dehumidification component sprays dehumidification medium to the main cable of the suspension bridge through the one-way nozzle.

2. The main cable of a suspension bridge with a dehumidifying structure according to claim 1, characterized in that, The dehumidification medium includes a gas type ion sustained-release agent formed by a multi-component mixed system; The gas type ion sustained-release agent includes a sustained-release carrier, a negative ion generating source, a stabilizer and a preservative synergist; The slow-release carrier is a mixture of isopropyl alcohol and ethylene glycol dimethyl ether, which is used to slowly evaporate and drive the diffusion of other components; the negative ion generating source is a mixture of tetrabutylammonium chloride and isoamyl nitrite, which ionizes to generate , during evaporation; the stabilizer is a mixture of vitamin E and di-t-butyl-p-cresol, which is used to prevent the oxidation of the negative ion generating source; and the preservative synergist is benzotriazole, which is used to form a chelate film on the surface of the steel wire. ​ 3. The main cable of a suspension bridge with a dehumidification structure according to claim 2, characterized in that, It includes a plurality of guide mechanisms for guiding the gas type ion sustained-release agent to move in the main cable of the suspension bridge, a plurality of the guide mechanisms are distributed in the main cable of the suspension bridge and located outside the dehumidification component; The guide mechanism includes a soft filament outer cylinder and a soft filament inner cylinder located inside the soft filament outer cylinder, the soft filament inner cylinder is slidably connected inside the soft filament outer cylinder, a plurality of optical fibers are fixedly connected to the soft filament outer cylinder, a plurality of detection windows matched with the optical fibers are indirectly arranged on the optical fibers, and a light transmission part matched with the detection window is fixedly connected to the soft filament outer cylinder; One end of the main cable of the suspension bridge is provided with an optical fiber detector matched with the optical fiber.

4. The main cable of a suspension bridge with a dehumidification structure according to claim 3, characterized in that, The inside of the soft filament inner cylinder is fixedly connected with a first lead wire, a plurality of mounting grooves are indirectly formed in the soft filament inner cylinder, electromagnets matched with the mounting grooves are mounted on the soft filament inner cylinder, a first controller is fixedly connected to the electromagnets, and the first controller and the first lead wire are electrically connected.

5. The main cable of a suspension bridge with a dehumidifying structure according to claim 1, wherein The one-way nozzle includes a shunt, the dehumidification inner cylinder is provided with a convex column matched with the shunt, and the convex column is communicated with the inside of the dehumidification inner cylinder; The inside of the dehumidification inner cylinder is fixedly connected with a mounting bracket matched with the convex column, the middle part of the mounting bracket is fixedly connected with an annular sleeve, a connecting column is slidably connected in the annular sleeve, a first baffle is fixedly connected to one end of the mounting bracket away from the shunt, a fourth through hole is formed in the first baffle, and a blocking ball matched with the fourth through hole is fixedly connected to the connecting column; A spring is sleeved on the connecting column, and the spring is located between the annular sleeve and the blocking ball.

6. The main cable of a suspension bridge with a dehumidification structure according to claim 1, characterized in that, The movable dehumidification component includes a micro pipeline robot, one end of the micro pipeline robot is fixedly connected with a connecting pipe, an end of the micro pipeline robot away from the connecting pipe is fixedly connected with a nozzle matched with the connecting pipe, and the end of the connecting pipe away from the micro pipeline robot is provided with a winder.

7. The main cable of a suspension bridge with a dehumidification structure according to claim 6, characterized in that, The number of the micro pipeline robots is two, and the opposite surfaces of the two micro pipeline robots are fixedly connected with second baffles. The opposite surfaces of the two nozzles are oppositely arranged.

8. The main cable of a suspension bridge with a dehumidifying structure according to claim 6 or 7, characterized in that, The micro pipeline robot is fixedly connected with a pair of insulation parts, the inside of the pair of insulation parts is fixedly connected with a soft conductive sheet, the lower end of the micro pipeline robot is fixedly connected with an elastic rod, the elastic rod is fixedly connected with a mounting seat, and the mounting seat is installed with a conductive bearing matched with the soft conductive sheet; The conductive bearing is fixedly connected with a second wire, the second wire is fixedly connected with a second controller at the end away from the conductive bearing, the second controller is fixedly connected with a third wire matched with the micro pipeline robot, and the micro pipeline robot and the third wire are electrically connected.

9. A method of dehumidifying a main cable of a suspension bridge having a dehumidifying structure, characterized by, The method comprises the following steps: S1, the guide mechanism and the dehumidification assembly are buried in the cable strand along the axial direction of the main cable of the suspension bridge, the dehumidification assembly is located in the middle part of the main cable of the suspension bridge, and a plurality of guide mechanisms are located outside the dehumidification assembly; S2, the guide mechanism continuously collects humidity values of each region of the main cable, transmits data to a signal demodulation unit once every 20-50s, generates a humidity distribution thermal map after analysis, and determines a high-humidity risk region and its three-dimensional coordinates through a preset algorithm by the main control unit; S3, the main control unit outputs a regulating current to the array-type electromagnet corresponding to the high-humidity risk region to generate a 0.3-1.0T directional magnetic field, and the dehumidification assembly synchronously sprays dehumidification medium to the high-humidity risk region, and the dehumidification medium modified by magnetism is directed to the high-humidity region under the action of the magnetic field.

10. The method of claim 9, wherein the main cable of the suspension bridge is a dehumidified structure. The main control unit generates a dehumidification effect report every month, including the distribution of high-humidity risk regions, the cumulative dehumidification time and the medium consumption, and when the annual dehumidification times of a certain high-humidity risk region are greater than 50 times, it is marked as a key maintenance area.

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