Anti-icing steel cable, anti-icing steel cable power supply control device and bridge

Abstract

The invention relates to an anti-icing steel cable, an anti-icing steel cable power supply control device and a bridge. The anti-icing steel cable sequentially comprises a steel cable base, insulating primer, an electric heating layer and a low-ice adhesion outer layer from inside to outside, and the electric heating layer is composed of a conductive heating base body, a positive electrode and a negative electrode, the positive electrode and the negative electrode extend to the two ends of the anti-icing steel cable in the length direction of the anti-icing steel cable. The conductive heating matrix is composed of a flexible resin matrix and a conductive heating material dispersed in the flexible resin matrix, and the conductive heating material forms a conductive heating network in the flexible resin matrix. When the anti-icing steel cable is not frozen, the low-ice adhesion outer layer of the anti-icing steel cable can reduce accumulation of water on the surface of the anti-icing steel cable, prevent or reduce icing and reduce the adhesion strength of ice on the surface of the anti-icing steel cable; and after icing, the power supply is started to supply power to the anti-icing steel cable, the electric heating layer is heated to remove a small amount of ice adhered to the outer layer, the required energy consumption is low, and the anti-icing and deicing cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of bridge disaster prevention and control, and specifically to an anti-icing steel cable, an anti-icing steel cable power supply control device and a bridge. Background Art

[0002] The ice on bridge cables will significantly change the cross-sectional shape of the main cables, thereby causing vibration relaxation and damage; and the falling ice caused by rising temperatures poses a huge threat to traffic safety.

[0003] At present, bridge anti-icing technology mainly focuses on bridge deck anti-icing. For example, the prior art discloses an automatically heated bridge deck. The principle is to add metal pieces to the concrete admixture. When the hardened concrete bridge deck is inserted and powered on, the metal pieces carry current, and the heat generated thaws the bridge to prevent ice. This method is not suitable for preventing or breaking ice on bridge cables. The prior art also discloses an automatic spraying system based on chemical anti-icing agents, which can automatically spray anti-icing agents when the bridge deck temperature is close to the freezing point, but this strategy faces serious environmental pollution problems.

[0004] Coating anti-icing technology uses hydrophobic coatings to reduce the adhesion of ice, which can significantly reduce the accumulation and adhesion of ice and snow on the coating surface. It has been experimentally applied on some bridges and is expected to be applied to the surface of bridge cables. However, although the super-hydrophobic coating, which plays a major role in the coating, can maintain extremely low ice adhesion strength in a static environment, in a natural icing environment, due to the entry of water vapor, an interlocking structure will be formed, making it difficult to remove ice. In addition, the durability of the coating is poor. Under shear, the coating structure is easily destroyed, resulting in functional failure, which makes it difficult to apply coating anti-icing technology on a large scale. Summary of the invention

[0005] The present application provides an anti-icing steel cable, an anti-icing steel cable power supply control device and a bridge, which can prevent or reduce the icing of the steel cable in a natural icing environment and remove ice on the surface of the steel cable with low cost and low energy consumption.

[0006] In a first aspect, an embodiment of the present application provides an anti-icing steel cable, which includes, from the inside to the outside, a steel cable base, an insulating primer, an electric heating layer, and a low ice adhesion outer layer, wherein:

[0007] The electric heating layer is composed of a conductive heating matrix and a positive electrode and a negative electrode embedded in the conductive heating matrix; the positive electrode and the negative electrode extend along the length direction of the anti-icing steel cable to both ends of the anti-icing steel cable; the conductive heating matrix is ​​composed of a flexible resin matrix and a conductive heating material dispersed in the flexible resin, and the conductive heating material forms a conductive heating network in the flexible resin matrix.

[0008] In combination with the first aspect, in some embodiments, the positive electrode and the negative electrode are both comb-shaped electrodes, and the comb teeth of the two are arranged in an alternating manner.

[0009] In combination with the first aspect, in some embodiments, the comb-shaped electrode includes a bus main electrode and a plurality of comb-tooth electrodes, the bus main electrode extends along the length direction of the anti-icing steel cable to both ends of the anti-icing steel cable, and the comb-tooth electrodes extend circumferentially along the anti-icing steel cable.

[0010] In combination with the first aspect, in some embodiments, the electrically conductive heating material is at least one of graphene, graphite, and carbon nanotubes; and / or the electrically conductive heating material accounts for 5wt% to 50wt% of the electric heating layer.

[0011] In combination with the first aspect, in some embodiments, the low ice adhesion outer layer is one of a super hydrophobic coating, a self-lubricating coating, and a slip coating; and / or the insulating primer is composed of nano powder, an elastic polymer and a strength resin.

[0012] In a second aspect, an embodiment of the present application provides an anti-icing steel cable power supply control device for the above-mentioned anti-icing steel cable, comprising:

[0013] A monitoring module, which is used to obtain and output the ice coverage condition of the low ice adhesion outer layer surface;

[0014] A power supply module, which is used to output a power supply signal according to the ice coverage status output by the monitoring module;

[0015] A voltage transformation module is used to adjust the voltage applied by the power supply to the anti-icing steel cable according to the power supply signal output by the power supply module.

[0016] In combination with the second aspect, in some embodiments, the icing conditions include one or more of icing coverage area, icing thickness, air temperature, and humidity.

[0017] In combination with the second aspect, in some embodiments, the monitoring module obtains the ice coverage condition of the low ice adhesion outer surface through a visual recognition device, and the visual recognition device includes a recognition probe, a vibration sensor and a temperature sensor.

[0018] In a third aspect, an embodiment of the present application provides a bridge, comprising a power source and the above-mentioned anti-icing steel cable, wherein the power source is connected to a positive electrode and a negative electrode at the same end of the anti-icing steel cable.

[0019] In combination with the third aspect, in some embodiments, the bridge also includes the above-mentioned anti-icing steel cable power supply control device.

[0020] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0021] The present application sequentially arranges an insulating primer, an electric heating layer, and a low-ice adhesion outer layer outside the steel cable base, prevents or reduces icing by the low-ice adhesion outer layer, and removes ice on the anti-icing steel cable by heating through the electric heating layer; the electric heating layer is evenly powered by electrodes, avoiding the need to arrange long electric conductors outside the anti-icing steel cable, thereby solving the problems of easy icing, difficulty in deicing, and high deicing costs of bridge steel cables. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A schematic diagram of an anti-icing steel cable provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a positive electrode and a negative electrode provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of an anti-icing steel cable power supply control device for an anti-icing steel cable provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The embodiments of the present application provide an anti-icing steel cable, an anti-icing steel cable power supply control device and a bridge, which can solve the problems in the related art that bridge steel cables are prone to ice formation, difficult to remove ice and have high cost of removing ice.

[0028] Figure 1 It is a cross-sectional view of the anti-icing steel cable provided by the present application. The anti-icing steel cable provided by the embodiment of the present application includes a steel cable base, an insulating primer, an electric heating layer, and a low ice adhesion outer layer from the inside to the outside, wherein: the electric heating layer is composed of a conductive heating substrate and a positive electrode and a negative electrode embedded in the conductive heating substrate; the positive electrode and the negative electrode both extend to both ends of the anti-icing steel cable along the length direction of the anti-icing steel cable; the conductive heating substrate is composed of a flexible resin substrate and a conductive heating material dispersed in the flexible resin, and the conductive heating material forms a conductive heating network in the flexible resin substrate.

[0029] The present application coats an insulating primer on the surface of a steel cable base, constructs an electrode on the surface of the insulating primer, constructs an electric heating layer on the surface of the primer after the electrode is constructed, embeds the electrode into the electric heating layer, and constructs a low ice adhesion outer layer on the surface of the electric heating layer. These coatings are tightly fitted to each other, have good density, are not easily damaged, and can be used for a long time.

[0030] The purpose of setting a low-ice adhesion outer layer on the outermost layer of the anti-icing steel cable of the present invention is to reduce the accumulation of water on the surface of the anti-icing steel cable, avoid or reduce ice formation, and reduce the adhesion strength of ice on the surface of the low-ice adhesion outer layer; the low-ice adhesion outer layer can also play a sealing and insulating role to prevent the electric heating layer from directly contacting water and leaking electricity. The purpose of setting an electric heating layer close to the inner side of the low-ice adhesion outer layer of the present invention is to heat and remove ice when ice forms on the anti-icing steel cable; electrodes are set in the electric heating layer to use the electrodes to evenly supply power to the electric heating layer and avoid exposing the electric wires outside the anti-icing steel cable. The purpose of setting an insulating primer close to the inner side of the electric heating layer of the present invention is to isolate the electric heating layer and the steel cable base, to avoid the formation of a passage between the electric heating layer and the steel cable base, resulting in a short circuit, and affecting the normal heating of the electric heating equipment. .

[0031] The electrodes of the present invention are composed of a positive electrode and a negative electrode. The positive electrode and the negative electrode extend along the length direction of the anti-icing steel cable to both ends of the anti-icing steel cable. The conductive heating network distributed throughout the electric heating layer can be in uniform contact with the positive electrode and the negative electrode, so that electrical energy can be fully converted into thermal energy, thereby uniformly heating the low ice adhesion outer layer.

[0032] When not frozen, the low-ice adhesion outer layer of the anti-icing steel cable of the present application can reduce the accumulation of water on the surface of the anti-icing steel cable, avoid or reduce ice formation, and reduce the adhesion strength of ice on the surface of the low-ice adhesion outer layer; after ice formation, the power supply is started to supply power to the anti-icing steel cable, the temperature of the electric heating layer increases and heats the low-ice adhesion outer layer, thereby removing the ice on the low-ice adhesion outer layer.

[0033] In one embodiment, the positive electrode and the negative electrode are both comb-shaped electrodes, and the comb teeth of the two are arranged in a staggered manner. Such an arrangement allows the positive electrode and the negative electrode to fully contact the conductive heating network in the electric heating layer; and the positive electrode and the negative electrode can be connected to the positive and negative electrodes of the power supply at the same end of the anti-icing steel cable, avoiding the need to set up an electric conductor outside the anti-icing steel cable.

[0034] In one embodiment, the comb-shaped electrode includes a main current collecting electrode and a plurality of comb-tooth electrodes, wherein the main current collecting electrode extends along the length direction of the anti-icing steel cable to both ends of the anti-icing steel cable, and the comb-tooth electrodes extend along the circumference of the anti-icing steel cable. Figure 2As shown, the main busbar electrode is connected to the positive or negative pole of the power supply, and the comb-tooth electrodes of the positive electrode and the negative electrode are arranged in an interlaced manner. The main busbar electrode can be powered by an AC or DC power supply. The multiple interlaced comb-tooth electrodes increase the contact area between the electrode and the conductive heating substrate, which can improve the electrothermal uniformity and heating efficiency of the conductive heating substrate, reduce the contact resistance between the electrode and the conductive heating substrate, prevent local overheating and damage of the conductive heating substrate, and improve system safety. However, when the voltage is sufficient to meet the needs of the electric heating layer, the comb-tooth electrode can be omitted, and heating can be achieved only by the main busbar electrode.

[0035] In one embodiment, the positive electrode and the negative electrode are prepared by directly pasting metal foil on the surface of the prepared insulating primer or sputtering with a mask or directly applying metal slurry to prepare the positive electrode and the negative electrode. When the insulating primer is completely cured, the positive electrode and the negative electrode can be constructed. The metal foil includes but is not limited to copper foil and aluminum foil, the sputtered metal includes but is not limited to gold, silver, and copper layers, and the metal slurry includes but is not limited to silver slurry, copper slurry, etc. Preferably, copper foil is directly used to paste the positive electrode and the negative electrode.

[0036] In one embodiment, the electrically conductive heating material is at least one of graphene, graphite, and carbon nanotubes; and / or the electrically conductive heating material accounts for 5wt% to 50wt% of the electric heating layer.

[0037] After the electrode is constructed, the conductive heating matrix is ​​constructed to construct the electric heating layer. The conductive heating matrix of the present application is composed of conductive heating material, elastic polymer and strength resin. Among them, the conductive heating material includes but is not limited to graphene, graphite, carbon nanotubes, etc., which are mainly used to construct a conductive heating network, and the conductive heating material accounts for 5wt% to 50wt% of the conductive heating matrix. The conductive heating material is preferably carbon nanotubes, and its optimal addition amount is 12.5wt% of the conductive heating matrix. The elastic polymer includes but is not limited to elastomeric materials such as thermoplastic polyurethane, polycaprolactone, styrene-based thermoplastic elastomer, polyvinyl chloride, etc., which mainly plays the role of promoting the dispersion of the conductive heating material, thickening and preventing sedimentation, making the conductive heating material more evenly dispersed in the electric heating layer coating, and improving the flexibility of the electric heating layer. The elastic polymer material accounts for 15wt% to 50wt% of the conductive heating matrix. The polymer material is preferably a styrene-based thermoplastic elastomer, and its optimal addition amount is 25wt% of the conductive heating matrix. Strength resins include but are not limited to reactive polyurethane, epoxy resin, polyurea resin, and acrylic resin, and are mainly used to improve the strength of the electric heating layer; the strength resin is preferably reactive polyurethane, and its optimal addition amount is 62.5wt% of the conductive heating substrate.

[0038] The present invention uses elastic polymer to make the electric heating layer because the elastic polymer can promote the electric heating layer to adhere closely to the surface of the insulating layer, and the conductive particles dispersed in the elastic polymer can be connected to each other to form a conductive heating network. The conductive heating network can directly contact both the positive electrode and the negative electrode to form a conductive path. When a voltage is applied, it has an electric heating effect.

[0039] In the process of constructing the electric heating layer of the present invention, the conductive heating material, the elastic polymer and the strength resin are dispersed in the second organic solvent to obtain the conductive heating matrix coating. The configured conductive heating matrix coating is sprayed or brushed on the surface of the insulating primer of the prepared electrode, and naturally cured for 10 hours to obtain the electric heating layer. The second organic solvent includes but is not limited to ethyl acetate, butyl acetate, xylene, and n-butanol. The total mass of the conductive heating material, the elastic polymer and the strength resin accounts for 0.1wt% to 60wt% of the conductive heating matrix coating, preferably 20wt%, wherein the second organic solvent is preferably butyl acetate.

[0040] In addition, the present invention can also directly adhere carbon cloth or carbon fiber fabric to the surface of the insulating primer of the prepared electrode to construct an electric heating layer.

[0041] In one embodiment, the insulating primer of the present invention is composed of nano powder, elastic polymer and strength resin. The elastic polymer and strength resin are high molecular polymers with insulation properties and poor thermal conductivity, which can reduce the heat diffusion of the electric heating layer to the steel cable base. The insulating primer is close to the steel cable base and has excellent adhesion to the steel cable base, the electrode, and the conductive heating substrate. In the embodiment of the present application, the strength resin is mainly used as the resin matrix of the entire insulating primer, including but not limited to polyurethane, epoxy resin, polyurea resin, acrylic resin, etc., preferably epoxy resin, and its addition amount is 10wt% to 80wt% of the insulating primer, and its optimal addition amount is 60wt% of the insulating primer. The elastic polymer mainly adjusts the elastic modulus of the coating formed by the strength resin through the molecular interpenetration characteristics, including but not limited to thermoplastic polyurethane, polycaprolactone, styrene-based thermoplastic elastomer, polydimethylsiloxane and other high elastic rubber materials, preferably styrene-based thermoplastic elastomer, and its addition amount is 10wt% to 40wt% of the insulating primer. The content can be adjusted according to the elastic modulus requirement of the coating surface, and its optimal addition amount is 20wt% of the insulating primer. Nano powder includes two-dimensional nano material and nano powder. The presence of two-dimensional nano material can improve the corrosion resistance of the insulating primer surface. The two-dimensional nano material is preferably glass flakes. The addition amount of two-dimensional nano material is 10wt% to 30wt% of the insulating primer, and its optimal addition amount is 15wt% of the insulating primer. Nano powder is one or more of silicon dioxide, titanium dioxide, and glass microspheres. These nano powders are mainly used as filling materials to fill the gaps of the insulating primer, improve the strength of the insulating primer, and make the insulating primer more dense. The nano powder is preferably silicon dioxide powder, and the best addition amount thereof is 5wt% of the insulating primer.

[0042] In the process of preparing the insulating primer of the present invention, nano powder, elastic polymer and strength resin are dispersed in an organic solvent to obtain an insulating primer coating; the insulating primer coating is sprayed or brushed on the surface of the steel cable substrate to obtain the insulating primer. The organic solvent includes but is not limited to ethyl acetate, butyl acetate, xylene, and n-butanol. The total mass of the nano powder, elastic polymer and strength resin accounts for 1wt% to 60wt% of the insulating primer coating, preferably 30wt% to 40wt%, wherein the organic solvent is preferably butyl acetate.

[0043] In the embodiment of the present invention, when preparing the insulating primer, the surface of the steel cable base is first cleaned with acetone and ethanol, and then the insulating primer coating is sprayed or brushed on the surface of the steel cable base and naturally cured for 10 hours to obtain the insulating primer.

[0044] In one embodiment, the low ice adhesion outer layer of the present invention is one of a self-lubricating coating, a super hydrophobic coating, and a slip coating. Such a configuration can reduce the adhesion of water on the low ice adhesion outer layer, thereby avoiding or reducing ice formation.

[0045] The low ice adhesion outer layer of the present application is a coating with low surface energy, which has a low ice adhesion strength and can reduce the accumulation of ice on the surface of the low ice adhesion outer layer. In addition, this characteristic can greatly reduce the energy consumption required for the electric heating anti-icing of the low ice adhesion outer layer. The low ice adhesion outer layer is preferably a super hydrophobic coating.

[0046] The super-hydrophobic coating is mainly composed of hydrophobic particles, nano-fillers, liquid lubricants (required for the slip coating), elastic polymers and strength resins. Among them, the super-hydrophobic coating is the most preferred. The hydrophobic coating has extremely high non-stick droplet characteristics, and ice has extremely low ice adhesion strength on the surface of the super-hydrophobic coating, which is composed of hydrophobic nano-particles, nano-fillers, elastic polymers and strength resins.

[0047] Super hydrophobic coating coating can be purchased commercially, and can also be prepared by itself.Hydrophobic nanoparticles include but are not limited to polytetrafluoroethylene powder, hydrophobic silicon dioxide, hydrophobic titanium dioxide, etc., and their addition is 30wt%~60wt% of super hydrophobic coating.Hydrophobic nanoparticles are preferably polytetrafluoroethylene powder, and their optimal addition is 55wt% of super hydrophobic coating.Nano filler uses nano powders such as glass micro beads, glass flakes, graphene, mainly as filling material, fills super hydrophobic coating gap, improves super hydrophobic coating strength, and makes super hydrophobic coating more compact, and nano filler is preferably glass flakes, and its addition is 5wt% of super hydrophobic coating.Elastic polymer mainly regulates the elastic modulus of super hydrophobic coating formed by strength resin through molecular interpenetration characteristics, including but not limited to high elastic rubber materials such as thermoplastic polyurethane, polycaprolactone, styrene-based thermoplastic elastomer, polydimethylsiloxane. Elastic polymer is preferably styrene-based thermoplastic elastomer, and its addition is the 10wt%~40wt% of super hydrophobic coating, and its content can be regulated according to the surface elastic modulus demand of super hydrophobic coating. Elastic polymer is preferably polydimethylsiloxane, and its addition is the 10wt%~40wt% of super hydrophobic coating, and its optimal addition is the 10wt% of super hydrophobic coating. Strength resin is mainly used as the resin matrix of whole super hydrophobic coating, including but not limited to polyurethane, epoxy resin, polyurea resin, acrylic resin etc. Strength resin is preferably epoxy resin, and its addition is the 10wt%~40wt% of super hydrophobic coating, and its optimal addition is the 30wt% of super hydrophobic coating.

[0048] In the process of preparing super-hydrophobic coating by the present invention, the above-mentioned hydrophobic nanoparticles, nanofillers, elastic polymers and strength resins are dispersed in an organic solvent, i.e., a super-hydrophobic coating coating is obtained; The super-hydrophobic coating coating is sprayed or brushed on the surface of the electric heating layer, i.e., a super-hydrophobic coating is obtained. Organic solvents include but are not limited to ethyl acetate, butyl acetate, xylene, n-butanol, and the super-hydrophobic coating coating solid content is 0.1wt% to 60wt%, wherein the organic solvent is preferably butyl acetate, and the optimal solid content of the super-hydrophobic coating coating is 40wt%.

[0049] In a second aspect, an embodiment of the present application provides an anti-icing steel cable power supply control device for the above-mentioned anti-icing steel cable, comprising:

[0050] A monitoring module, which is used to obtain and output the ice coverage condition of the low ice adhesion outer layer surface;

[0051] A power supply module, which is used to output a power supply signal according to the ice coverage status output by the monitoring module;

[0052] The transformer module is used to adjust the voltage applied by the power supply to the anti-icing steel cable according to the power supply signal output by the power supply module.

[0053] In one embodiment, the icing condition includes one or more of icing coverage area, icing thickness, air temperature, and humidity. The icing coverage area includes ice bodies and snow accumulation on the surface of the cable caused by freezing rain, ice and snow, and ice crust and ice slush caused by liquid residue.

[0054] In one embodiment, the monitoring module obtains the ice coating condition of the low ice adhesion outer layer surface through a visual recognition device, and the visual recognition device includes a recognition probe, a vibration sensor and a temperature sensor.

[0055] The anti-icing cable power supply control device has two working modes: 1. De-icing mode; 2. Anti-icing mode. When the temperature sensor attached to the surface of the anti-icing cable recognizes that the temperature has reached the freezing point (≤5°C), the identification probe will be activated. The ice condition on the surface of the anti-icing cable is monitored by the change in the shape of the cable structure caused by icing. The accumulation of ice will cause the vibration state of the cable to change. Combined with the vibration sensor signal, the ice condition on the surface of the anti-icing cable is judged. When ice accumulation is found, the de-icing mode is activated and power is supplied to the anti-icing cable. At this time, the temperature sensor will also monitor the surface temperature of the anti-icing cable in real time. When the ice body has not debonded, the output voltage of the transformer module gradually increases, causing the surface temperature of the anti-icing cable to continue to rise until the vibration sensor and the identification probe recognize that the ice body has debonded, and then the output voltage is gradually reduced to maintain the surface of the cable at 5°C and switch to the anti-icing mode. In the anti-icing mode, when the temperature sensor recognizes that the temperature has reached the freezing point (≤5°C) and the visual recognition module recognizes that it is raining, snowing or freezing rain, the anti-icing mode can be manually / automatically turned on to supply power to the steel cable to maintain the surface of the steel cable at 5°C, while monitoring the ice coverage of the steel cable.

[0056] In one embodiment of the present application, a bridge is provided, comprising a power source and the above-mentioned anti-icing steel cable, wherein the power source is connected to a positive electrode and a negative electrode at the same end of the anti-icing steel cable.

[0057] In one embodiment, the bridge of the present application is a cable-stayed bridge or a suspension bridge, and a power source is arranged near the bridge deck and connected to the positive electrode and the negative electrode at one end of the anti-icing steel cable. When powered on, the low-ice adhesion outer layer can be heated to remove ice and snow on the surface of the low-ice adhesion outer layer.

[0058] In one embodiment, the bridge further comprises the anti-icing cable power supply control device, and utilizes the two working modes of the anti-icing cable power supply control device to prevent the cable from freezing and remove ice from the cable surface in a natural icing environment. The ice adhesion strength on the outer layer of low ice adhesion can be as low as 20kPa. At -10℃, the water content is 0.5g / cm 3 , in an environment with a wind speed of 20m / s, it can achieve 0.3W / cm 2 The low energy consumption can effectively prevent deicing. The adhesion between each coating can reach 8MPa, and it can withstand 1000h artificial aging and salt spray resistance test.

[0059] The bridge of the present application can provide safety protection for road vehicles and pedestrians under extreme climatic conditions, avoiding a series of problems such as high ice adhesion strength, large ice accumulation, and easy failure of the bridge cable structure in a natural icing environment, and building a solid safety guarantee for the bridge to cope with climatic environments such as freezing rain, ice and snow.

[0060] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0061] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0062] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An anti-icing steel cable, characterized in that: From the inside to the outside, it includes the steel cable base, insulating primer, electric heating layer, and low ice adhesion outer layer, among which: The electric heating layer is composed of a conductive heating matrix and a positive electrode and a negative electrode embedded in the conductive heating matrix; the positive electrode and the negative electrode extend along the length direction of the anti-icing steel cable to both ends of the anti-icing steel cable; the conductive heating matrix is ​​composed of a flexible resin matrix and a conductive heating material dispersed in the flexible resin, and the conductive heating material forms a conductive heating network in the flexible resin matrix.

2. The anti-icing steel cable according to claim 1, characterized in that: The positive electrode and the negative electrode are both comb-shaped electrodes, and the comb teeth of the two are arranged in a staggered manner.

3. The anti-icing steel cable according to claim 2, characterized in that: The comb-shaped electrode includes a main current collector electrode and a plurality of comb-tooth electrodes. The main current collector electrode extends to both ends of the anti-icing steel cable along the length direction of the anti-icing steel cable, and the comb-tooth electrodes extend circumferentially along the anti-icing steel cable.

4. The anti-icing steel cable according to claim 1, characterized in that: The conductive heating material is at least one of graphene, graphite, and carbon nanotubes; and / or, The conductive heating material accounts for 5wt% to 50wt% of the conductive heating substrate.

5. The ice-proof steel cable according to claim 1, characterized in that: The low ice adhesion outer layer is one of a super hydrophobic coating, a self-lubricating coating, and a slip coating; and / or, The insulating primer consists of nano powder, elastic polymer and strong resin.

6. An anti-icing steel cable power supply control device for the anti-icing steel cable according to any one of claims 1 to 5, characterized in that: include: A monitoring module, which is used to obtain and output the ice coverage condition of the low ice adhesion outer layer surface; A power supply module, which is used to output a power supply signal according to the ice coverage status output by the monitoring module; A transformer module is used to adjust the voltage applied by the power supply to the anti-icing steel cable according to the power supply signal output by the power supply module.

7. The anti-icing steel cable power supply control device according to claim 6, characterized in that: The icing condition includes one or more of icing coverage area, icing thickness, air temperature, and humidity.

8. The anti-icing steel cable power supply control device according to claim 6, characterized in that: The monitoring module obtains the ice coating condition of the low ice adhesion outer layer surface through a visual recognition device, and the visual recognition device includes a recognition probe, a vibration sensor and a temperature sensor.

9. A bridge, characterized in that: It comprises a power source and the anti-icing steel cable according to any one of claims 1 to 5, wherein the power source is connected to a positive electrode and a negative electrode at the same end of the anti-icing steel cable.

10. The bridge according to claim 9, characterized in that: The bridge also includes the anti-icing steel cable power supply control device as described in any one of claims 6 to 8.

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