Micro-power electromagnetic pulse deicing device and deicing method for bridge tower beams

Abstract

The present application discloses a micro-power electromagnetic pulse de-icing device and de-icing method for bridge tower beams. The present application utilizes micro-power electromagnetic pulse de-icing. The principle of the micro-power electric pulse de-icing device is to utilize a mechanical vibration de-icing method. The energy storage capacitor releases energy to the pulse coil at the moment of discharge, generating an instantaneous changing magnetic field in the coil. This magnetic field interacts electromagnetically with the metal surface, inducing eddy currents inside the metal, and ultimately generating a high-amplitude, short-duration electromagnetic force on the target object. Under the action of the instantaneous electromagnetic force, the ice layer is destroyed and falls off. When a pulse current is applied, the electromagnetic pulse force causes the metal surface of the de-icing target to produce invisible tiny contractions and expansions, resulting in micro-deformation of the target surface, causing the ice attached to the target object to break and slide or fall off, thereby achieving the purpose of de-icing the target object.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction and maintenance, and in particular to a micro-power electromagnetic pulse deicing device and deicing method for bridge tower beams. Background Art

[0002] With the continuous advancement of urbanization, the emergence of long-span bridges has greatly facilitated closer regional connectivity. As a vital component of transportation routes, bridges often feature prominent tower structures, making their safety in various environments crucial. However, due to the low winter temperatures and high humidity in the air above rivers, the liquid water content in the air is high. In cold, rainy, and snowy weather, winds can easily cause frost and ice to form on the sides of bridge tower beams. If not promptly removed, the ice accumulates and gradually transforms into icicles. Icy ice primarily forms on the windward side of the tower beams, and ice is particularly susceptible to falling when temperatures rise, wind speeds change, or external forces rise. Accidental falling icicles pose a significant safety hazard to vehicles and pedestrians on the bridge. Traffic accidents caused by falling ice from tower beams have been a common occurrence in recent years. Currently, few de-icing devices for tower beams are available domestically or internationally. Therefore, a de-icing device with a simple structure, suitable for use on tower beams, minimally impacting safe bridge operation, and easily assembled and disassembled with minimal energy consumption is being considered. Summary of the Invention

[0003] In view of this, the present application provides a micro-power electromagnetic pulse deicing device and deicing method for bridge tower beams, which has high deicing efficiency and low energy consumption required for deicing.

[0004] The present application provides a micro-power electromagnetic pulse deicing device for a bridge tower beam, comprising:

[0005] Aluminum support plates are used to be installed in the area enclosed by the bridge tower beams and tower columns;

[0006] an electromagnetic pulse mechanism, slidably disposed in the chamber surrounded by the aluminum support plate, for de-icing the tower bridge by generating electromagnetic pulses;

[0007] Icing monitoring cameras are used to monitor the de-icing conditions on the outside of the bridge tower.

[0008] Optionally, the aluminum support plate is provided with a first moving slide rail for sliding of the electromagnetic pulse mechanism, and the inner wall of the rail groove of the first moving slide rail is provided with a roller groove and a transmission shaft groove, the roller groove is used to accommodate the roller of the electromagnetic pulse mechanism, and the transmission shaft groove is used to accommodate the transmission shaft.

[0009] Optionally, the aluminum support plate is provided with a fixing piece, and the fixing piece is used to be positioned on the bridge tower cross beam.

[0010] Optionally, the electromagnetic pulse mechanism is provided with a buffer assembly and a static magnetic shielding shell, and the buffer assembly includes a damper, a shock-absorbing spring and a rubber pad connected in sequence.

[0011] Optionally, the aluminum support plate is provided with a second moving slide rail, and a moving steel ball is provided in the second moving slide rail.

[0012] Optionally, the electromagnetic pulse mechanism includes an electrical control component, which includes a power switch, an AC power supply, a voltage regulator, a transformer, a rectifier bridge, an energy storage capacitor, a reverse diode, a Rogowski coil, a trigger, a coil, an oscilloscope, and a DC voltmeter. The AC power supply is connected to both ends of the voltage regulator, the output end of the voltage regulator is connected to the input end of the transformer, the output end of the transformer is connected to the input of the rectifier bridge, and the output voltage of the rectifier bridge charges the energy storage capacitor. When the trigger circuit does not work during the charging process, the charging process and the discharge process are isolated. When charging is completed, the power switch is turned off, the trigger works, the discharge circuit is opened, and the energy storage capacitor discharges instantaneously to the coil to form a pulse process.

[0013] Optionally, a controller for executing traffic control is further included, and the method for executing traffic control includes the following steps:

[0014] S1, icing camera monitors the icing condition on the outside of the bridge tower;

[0015] S2. Generate a deicing planning path according to the icing situation and send a deicing request instruction;

[0016] S3, after receiving the de-icing request instruction and responding to the status determination of the traffic control point, if it is determined that de-icing is required, prohibiting vehicles and pedestrians from passing;

[0017] S4: Start the de-icing mode, wait for the de-icing to be completed and determine whether it is safe to do so before sending a traffic request command;

[0018] S5. Receive the traffic request instruction, plan a safe driving route, send the traffic request instruction, and restore normal traffic order.

[0019] In a second aspect, the present application provides a deicing method, which is implemented using the micro-power electromagnetic pulse deicing device for bridge tower beams as described above.

[0020] The deicing device applied to bridge tower beams provided in this application has the following beneficial effects:

[0021] 1. This application utilizes micro-power electromagnetic pulses for de-icing. The principle of a micro-power electric pulse de-icing device is to utilize a mechanical vibration de-icing method. At the moment of discharge, the energy storage capacitor releases energy to the pulse coil, generating a transient magnetic field in the coil. This magnetic field interacts electromagnetically with the metal surface, inducing eddy currents within the metal. This ultimately generates a high-amplitude, short-duration electromagnetic force on the target object. Under the action of this transient electromagnetic force, the ice layer is broken and detached. When a pulse current is applied, the electromagnetic pulse force causes the metal surface of the de-icing target to undergo invisible micro-contraction and expansion, resulting in micro-deformation of the target surface. This causes the ice attached to the target object to break and slide or fall, achieving the purpose of de-icing the target object.

[0022] Second, the device adopts a simple prefabricated structural design, making it easy to install, process, and maintain on the beam. Repeated pulse vibrations may cause fatigue in the aluminum support plate on the outer layer of the device's skin. Once fatigue damage reaches a certain level, the device can be removed and replaced with a new one, which can improve device utilization and effectively save money.

[0023] 3. This device integrates ice status detection, intelligent control, and zoned de-icing. It is equipped with a slide rail inside, which can slide back and forth inside the beam to de-ice at a fixed point in conjunction with ice monitoring, making de-icing more complete and efficient, ensuring that ice on the wall of the bridge tower beam can be removed safely and efficiently.

[0024] 4. The device is "L"-shaped from top to bottom, which is conducive to removing ice from the front edge and upper and lower edges of the windward side of the bridge tower beam, can improve de-icing efficiency, shorten de-icing time and save energy.

[0025] Fifth, the device is equipped with dampers and springs to reduce the excessive pulse force generated by the electromagnetic pulse. This provides a certain degree of cushioning, reducing fatigue on the device's outer aluminum plate. Furthermore, the short range of the inductive pulse can minimize the impact of the electromagnetic pulse force on the bridge tower beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0027] Figure 1 This is a schematic diagram of the working status of the micro-power electromagnetic pulse deicing device of this application on the bridge tower beam.

[0028] Figure 2 This is a front view schematic diagram of the internal main structure of the micro-power electromagnetic pulse deicing device of this application.

[0029] FIG3( a ) is a schematic side view of the internal main structure of the micro-power electromagnetic pulse deicing device of the present application.

[0030] FIG3( b ) is a detailed side view of the internal main structure of the micro-power electromagnetic pulse deicing device of the present application.

[0031] Figure 4 This is a schematic diagram of the slide rail of the micro-power electromagnetic pulse deicing device of this application.

[0032] Figure 5 This is a schematic diagram of the electrical principle of the micro-power electromagnetic pulse deicing device of this application.

[0033] Figure 6 This is a schematic diagram of the internal control circuit of the micro-power electromagnetic pulse deicing device of this application.

[0034] Figure 7 Traffic safety control flow chart provided for this application.

[0035] The components in the figure are identified as follows:

[0036] 1-bridge tower beam; 2-bridge tower column; 3-de-icing module; 301-icing monitoring camera; 4-aluminum support plate; 5-first moving slide rail; 501-roller groove; 502-drive shaft groove; 6-moving platform; 7-electromagnetic pulse mechanism; 701-power switch; 702-AC power supply; 703-voltage regulator; 704-transformer; 705-rectifier bridge; 706-energy storage capacitor; 707-reverse diode; 708-Rogowski coil; 709-trigger; 710-coil; 711-oscilloscope; 712-DC voltmeter; 8-electromagnetic pulse coil; 9-second moving slide rail; 10-stepping motor; 11-fixing part; 1101-fixing groove; 12-drive shaft; 13-drive module; 14-damper; 15-shock-absorbing spring; 16-moving steel ball; 17-rubber pad; 18-static magnetic shielding shell. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described 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 those skilled in the art without making creative efforts are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0041] This application provides a micro-power electromagnetic pulse deicing device for bridge tower beams, including a deicing unit and a traffic control unit. Specifically:

[0042] like Figure 1 As shown, in this embodiment, the micro-power electromagnetic pulse deicing module 3 is installed on the side of the bridge tower beam 1 in the form of an assembled structure and is located on both sides of the tower bridge column 2. An ice monitoring camera 301 is provided on the other side of the deicing module 3, which can monitor the ice condition on the outer surface of the deicing module 3 in real time.

[0043] Further, if Figure 2 As shown, the outermost side is an aluminum support plate 4 with a thickness of 4 mm. The upper and lower edges of the aluminum support plate 4 are provided with a first moving slide rail 5 and the bottom is provided with a second moving slide rail 9. Two electromagnetic pulse mechanisms 7 are "L"-shaped and embedded in the first moving slide rail 5 through a mobile platform 6, so as to fit the windward side and the bottom icing-prone area of the bridge tower beam 1. Specifically, one side of the long side of the L-shape fits the windward side of the bridge tower beam 1, and one side of the end of the electromagnetic pulse mechanism 7 fits the bottom icing-prone area of the bridge tower beam 1 (that is, the bottom edge close to the windward side). The mobile platform 6 includes a group of lateral translation parts installed in the middle and left and right of the bottom of the electromagnetic pulse mechanism 7 to drive the entire electromagnetic pulse mechanism 7 to move back and forth along the bridge tower beam 1.

[0044] It can be understood that the core structure of the electromagnetic pulse mechanism 7 is the electromagnetic pulse coil 8, which has a rectangular cross-section or a circular cross-section and can be wound with enameled wire. Since the inductor coil needs to often withstand a large pulse current, its current resistance needs to be considered. It is wound into a rectangular coil and fixed in the electromagnetic pulse mechanism 7.

[0045] Furthermore, if Figure 3(a) and 3(b) As shown, the bottom of the de-icing module 3 is an aluminum support plate 4 with a thickness of 4 mm, wherein a second moving slide rail 9 is provided at the bottom of the aluminum support plate 4, and a stepper motor 10 is installed in the electromagnetic pulse mechanism 7. The stepper motor 10 can enable the driving module 13 to drive the transmission shaft 12 to move back and forth on the first moving slide rail 5.

[0046] A set of two fixing members 11 is provided on the upper edge of the aluminum support plate 4 so that the entire de-icing module is fixed to the side of the bridge tower cross beam 1 for easy disassembly and assembly.

[0047] A damper 14, a shock-absorbing spring 15, a rubber pad 17, and a moving steel ball 16 are provided from top to bottom between the electromagnetic pulse mechanism 7 and the aluminum support plate 4. The damper 14, together with the shock-absorbing spring 15 and the rubber pad 17, plays a role in reducing the fatigue of the beam body and the aluminum support plate caused by excessive pulse force. The moving steel ball 16 can drive the electromagnetic pulse mechanism 7 to move back and forth on the second moving slide rail 9, thereby reducing the friction resistance generated.

[0048] In order to block the influence of magnetic field interference on the beam body and signal transmission, the electromagnetic pulse mechanism 7 is provided with a static magnetic shielding shell 18 made of ferromagnetic material outside the electromagnetic pulse mechanism 7.

[0049] Furthermore, if Figure 4 As shown, there are first moving rails 5 on the upper edges of both sides of the de-icing module 3, which are used for the electromagnetic pulse mechanism 7 to move back and forth laterally inside the de-icing module 3. The first moving rails 5 are provided with a number of equally spaced roller grooves 501 and a transmission shaft groove 502. Their function is that after the icing monitoring camera 301 identifies the position of the outer icing area of the de-icing module, it can issue instructions to the electromagnetic pulse mechanism 7, and the transmission shaft 12 reaches the designated area through the first moving rails 5. The roller grooves 501 and the transmission shaft grooves 502 can be used as buffer areas for de-icing. At the uppermost edge of the de-icing module 3, there are also a number of fixing parts 11 in groups of two, which pass through the fixing grooves 1101 to fix the entire de-icing module on the side of the bridge tower beam 1.

[0050] Furthermore, if Figure 5As shown, the electromagnetic pulse deicing system also includes an electrical control assembly electrically connected to the electromagnetic pulse coil 8. The circuit principle of this electrical control assembly is as follows: during discharge, current flows in the direction of the dashed line. To prevent the coil from reversely charging the capacitor, a reverse diode is connected in parallel with the energy storage capacitor bank for protection. The electromagnetic pulse deicing process primarily consists of the following steps: When the charging switch is turned on, the charging device, consisting of a boost and voltage regulator circuit and a rectifier circuit, charges the energy storage system, consisting of high-voltage capacitors. When the charging switch is turned off, the charging system is isolated from the discharge circuit. The discharge switch, consisting of a thyristor and trigger circuit, controls the discharge switch, causing the energy storage capacitor to discharge into the pulse coil, generating a large pulse current and a time-varying magnetic field. This induced circular current within the deicing target. This current interacts with the coil's magnetic field to generate a Lorentz magnetic force with a duration on the order of microseconds and a magnitude of tens to thousands of Newtons. This causes the metal to undergo small-amplitude, high-acceleration motion within its elastic deformation range, shaking off the ice. During discharge, current flows through the circuit formed by the capacitor, circuit resistance, and coil inductance, generating a pulsed electromagnetic force that breaks up the ice. If a single discharge fails to remove the ice, the charge-discharge circuit can be turned on and off multiple times for further discharge. Typically, after two or three electromagnetic impacts, the ice on the structure's surface will break up and loosen, eventually falling under the influence of gravity or airflow. In severe weather conditions, the icing process continues. When the detector receives ice information, it can repeat the pulse de-icing process to keep the ice thickness within a safe range.

[0051] Further, if Figure 6 As shown, the electrical control assembly primarily includes the following components: a power switch 701, a 220V AC power supply 702, a voltage regulator 703, a transformer 704, a rectifier bridge 705, an energy storage capacitor 706, a reverse diode 707, a Rogowski coil 708, a trigger device 709, a coil 710, an oscilloscope 711, and a DC voltmeter 712. As shown, a 220V AC power supply 702 is connected, and the power switch 701 controls the on / off switching of the entire circuit. The 220V AC power supply 702 is connected to both ends of the voltage regulator 703, allowing for continuous voltage adjustment. The output of the voltage regulator 703 is then connected to the input of the transformer, and the output of the transformer 704 is connected to the input of a single-phase bridge rectifier circuit. The output voltage of the rectifier bridge 705 charges the energy storage capacitor 706. During the charging process, the trigger circuit is inoperative, isolating the charging and discharging processes. After charging is complete, power switch 701 is turned off, trigger device 709 activates, and the discharge circuit is opened. Energy storage capacitor 706 instantly discharges into coil 710, forming a pulse process. Coil 710 and the surface of aluminum support plate 4 generate an electromagnetic pulse force, which breaks up the ice layer. To protect the device from damage caused by large reverse current during discharge, a reverse diode 707 is connected in parallel across coil 710. During the test, a Rogowski coil 708 and oscilloscope 711 were used to measure the pulse current, and a DC voltmeter 712 was used to measure the charging voltage on energy storage capacitor 706.

[0052] like Figure 7 FIG. 1 is a flow chart showing traffic control according to an embodiment of the present invention. The traffic control process includes the following steps:

[0053] S1, icing camera monitoring device outer aluminum support plate 4 icing situation;

[0054] S2. Generate a deicing planning path based on the icing condition of the outer aluminum support plate 4 of the device obtained in step S1, and send a deicing request instruction;

[0055] S3, receiving the de-icing request instruction in step S2 and responding to the waiting traffic control point status determination, if it is determined that de-icing is possible, prohibiting vehicles and pedestrians from passing;

[0056] S4: Start the de-icing mode, wait for the de-icing to be completed and determine whether it is safe to do so before sending a traffic request command;

[0057] S5. Receive the traffic request instruction in step S4, plan a safe driving route, send the traffic request instruction, and restore normal traffic order.

[0058] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

Claims

1. A micro-power electromagnetic pulse deicing device for bridge tower beams, characterized in that: include: Aluminum support plates are used to be installed in the area enclosed by the bridge tower beams and tower columns; An electromagnetic pulse mechanism is slidably disposed in a chamber enclosed by the aluminum support plate, and is used to de-ice the tower bridge by generating electromagnetic pulses; the aluminum support plate is provided with a first moving slide rail for sliding the electromagnetic pulse mechanism, and the inner wall of the track groove of the first moving slide rail is provided with a roller groove and a transmission shaft groove, the roller groove is used to accommodate a roller of the electromagnetic pulse mechanism, and the transmission shaft groove is used to accommodate a transmission shaft; the aluminum support plate is provided with a second moving slide rail, and a moving steel ball is provided in the second moving slide rail; Icing monitoring cameras are used to monitor the de-icing conditions on the outside of the bridge tower.

2. The micro-power electromagnetic pulse deicing device for bridge tower beams according to claim 1 is characterized in that: The aluminum support plate is provided with fixing parts, and the fixing parts are used to be positioned on the bridge tower cross beam.

3. The micro-power electromagnetic pulse deicing device for bridge tower beams according to claim 1 is characterized in that: The electromagnetic pulse mechanism is provided with a buffer assembly, which includes a damper, a shock absorbing spring and a rubber pad connected in sequence.

4. The micro-power electromagnetic pulse deicing device for bridge tower beams according to claim 1 is characterized in that: The electromagnetic pulse mechanism includes an electrical control component, which includes a power switch, an AC power supply, a voltage regulator, a transformer, a rectifier bridge, an energy storage capacitor, a reverse diode, a Rogowski coil, a trigger, a coil, an oscilloscope, and a DC voltmeter. The AC power supply is connected to both ends of the voltage regulator, the output end of the voltage regulator is connected to the input end of the transformer, the output end of the transformer is connected to the input end of the rectifier bridge, and the output voltage of the rectifier bridge charges the energy storage capacitor. When the trigger circuit does not work during the charging process, the charging process and the discharging process are isolated. When charging is completed, the power switch is turned off, the trigger works, and the discharge circuit is opened. The energy storage capacitor discharges instantaneously to the coil to form a pulse process.

5. The micro-power consumption electromagnetic pulse deicing device for bridge tower beams according to claim 1 is characterized in that: Also included is a controller for performing traffic control, wherein the method for performing traffic control comprises the following steps: S1, icing camera monitors the icing condition on the outside of the bridge tower; S2. Generate a deicing planning path according to the icing situation and send a deicing request instruction; S3, after receiving the de-icing request instruction and responding to the status determination of the traffic control point, if it is determined that de-icing is required, prohibiting vehicles and pedestrians from passing; S4: Start the de-icing mode, wait for the de-icing to be completed, and then determine whether it is safe to proceed. Then send a traffic request command; S5. Receive the traffic request instruction, plan a safe driving route, send the traffic request instruction, and restore normal traffic order.

6. A deicing method, characterized in that: The method is implemented by using the micro-power consumption electromagnetic pulse deicing device for bridge tower beams as claimed in claim 1.

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