Mobile ground wire direct-current ice melting vehicle and assembling method thereof

Abstract

The invention provides a mobile ground wire direct current deicing vehicle and an assembly method thereof, an alternating current-direct current conversion device is used for converting alternating current generated by a power generation device into direct current and outputting the direct current through a cable, and the direct current output by the alternating current-direct current conversion device through the cable is connected to a power grid to be deiced; a compartment body of the compartment is provided with a partition plate, an inner cavity of the compartment body of the compartment is divided into a working cavity and a noise reduction cavity by the partition plate, the power generation device and the alternating current and direct current conversion device are arranged in the working cavity, and exhaust holes are formed in the partition plate. The exhaust holes are used for guiding noise generated by the smoke exhaust noise elimination assembly of the power generation device and the air cooling assembly of the alternating current and direct current conversion device into the noise elimination cavity, and the noise elimination cavity carries out noise elimination according to the resistive noise elimination and interference noise elimination noise elimination principle. According to the invention, the wiring time and workload of the mobile ground wire direct-current ice melting vehicle and the power supply can be saved, and the wiring fault between the mobile ground wire direct-current ice melting vehicle and the power supply is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current ice melting, and in particular to a mobile ground-wire direct current ice melting vehicle and an assembly method thereof. Background Art

[0002] Winter ice accumulation on transmission and distribution lines poses a serious threat to the safe operation of power systems. Icing can cause line tripping due to ice flashover, conductor dancing, insulator flashover, and asynchronous ice shedding, resulting in phase-to-phase short circuits and tripping due to close proximity of upper and lower or horizontal conductors. When the thickness of ice on conductors exceeds the designed load capacity of transmission lines and towers, widespread power outages, such as tower collapse and line disconnection, can occur. These disasters not only undermine grid stability and threaten grid security, but also severely impact people's daily lives and cause significant economic losses.

[0003] The development of DC ice-melting devices has played a significant role in improving the grid's ability to withstand ice disasters. The basic principle of a DC ice-melting device is to convert AC power into DC power and inject it into transmission and distribution conductors. The current generates heat in the conductor's resistance, melting the ice. The advantage of DC ice-melting lies primarily in its ability to melt ice over long conductors while consuming only a small amount of reactive power, making it widely applicable. DC ice-melting solutions can utilize different types and capacities of DC ice-melting devices to adapt to different voltage levels and conductor cross-sections, depending on the application conditions.

[0004] DC ice melting devices can be categorized as fixed or mobile based on their deployment method. Fixed DC ice melting devices are typically installed simultaneously with substation construction and are located alongside the substation. They can only melt ice on specific lines and have a limited coverage area. For lines without fixed DC ice melting devices, mobile DC ice melting devices can be used, offering greater flexibility. These mobile ice melting devices are also known as mobile ground line DC ice melting vehicles.

[0005] Mobile ground-line DC de-icing vehicles typically deploy the de-icing device, control system, cable winch, and other accessories on a vehicle-mounted platform. De-icing cables are then connected to ice-covered lines, power supplies, and other equipment before the de-icing process begins. After de-icing is complete, the wiring is removed and the site is restored. The vehicle can then be deployed to another de-icing site. This vehicle can meet the de-icing needs of multiple lines, offering flexible deployment and wide applicability.

[0006] At present, the power supply of the traditional main grid mobile ground-wire DC ice-melting vehicle needs to be obtained from the substation bus. When obtaining power from the 10kV or 35kV bus in the station, the mobile ground-wire DC ice-melting vehicle can only be used in the existing substation. At the same time, the 10kV or 35kV bus in the station needs to reserve a spare outgoing line circuit or stop one load. Therefore, it cannot be used at any position in the middle of the line outside the station. At the same time, the capacity of the mobile ground-wire DC ice-melting vehicle is limited by the distance between the two substations. When the distance is long, the capacity may be insufficient, and the purpose of ice melting cannot be achieved, and the versatility of use is not strong.

[0007] To address this, existing technologies equip mobile ground-wire DC ice-melting vehicles with separate power supply vehicles. When these separate power supply vehicles are used to obtain power, primary and secondary cables must be connected between the mobile ground-wire DC ice-melting vehicle and the power supply vehicle. This significantly increases the workload for on-site operators in harsh, freezing weather and when ice-melting tasks are urgent. Furthermore, the power supply vehicle and DC ice-melting vehicle are typically not a complete set, and the primary and secondary electrical interfaces between them may not be compatible. This requires checking the interfaces and remaking and debugging the primary and secondary cable connectors before each use, a complex and tedious process. Furthermore, connection failures between the two vehicles can occur during ice-melting operations.

[0008] Therefore, it is necessary to develop a new mobile ground-wire DC ice-melting vehicle to save the time and workload of wiring the mobile ground-wire DC ice-melting vehicle with the power supply and reduce the wiring failure between the mobile ground-wire DC ice-melting vehicle and the power supply. Summary of the Invention

[0009] The object of the present invention is to provide a mobile ground-wire DC ice-melting vehicle and an assembly method thereof, so as to solve the problems of the existing mobile ground-wire DC ice-melting vehicle in that the wiring to the power supply takes a long time, the workload is large and the failure rate is high.

[0010] In order to solve the above technical problems, the present invention provides a mobile ground wire DC ice melting vehicle, comprising a mobile device, a power generation device, and an AC / DC conversion device for converting the AC power generated by the power generation device into DC power and outputting it through a cable. The DC power output by the AC / DC conversion device through the cable is connected to the power grid to be melted, and the power grid to be melted is melted using the DC heating and ice melting principle. The mobile device comprises a mobile vehicle and a carriage, the carriage is installed on the mobile vehicle, the power generation device and the AC / DC conversion device are installed on the base of the carriage, the carriage body has a partition, the partition divides the inner cavity of the carriage body into a working chamber and a silencer chamber, the power generation device and the AC / DC conversion device are arranged in the working chamber, and an exhaust hole is opened on the partition, the exhaust hole is used to introduce the noise generated in the working chamber by the smoke exhaust and silencer component of the power generation device and the air cooling component of the AC / DC conversion device into the silencer chamber, and the silencer chamber uses the resistive silencer and interference silencer principles to eliminate noise.

[0011] Optionally, a ventilation window is provided on the side wall of the silencing chamber, a shutter is installed on the ventilation window, the silencing chamber has a silencing hole plate and a noise reduction component, the silencing hole plate is installed on the ventilation window and is located on the inner side of the shutter, and the noise reduction component is installed in the silencing chamber.

[0012] Optionally, the silencer hole plate includes a box body and a fixing ear piece for fixing the box body on the inner wall of the silencer cavity. The box body is provided with honeycomb openings on two opposite sides parallel to the shutter. The silencer hole plate can absorb part of the sound wave energy. At the same time, the viscous resistance of the air and the vibration friction of the hole wall of the honeycomb opening convert the sound wave fluctuation energy into heat energy to reduce noise.

[0013] Optionally, the noise reduction assembly includes a support rod fixed on the inner wall of the silencing chamber and a plurality of noise reduction plates arranged on the support rod.

[0014] Optionally, the noise reduction plate includes a first folding plate, a connecting plate and a second folding plate, one end of the connecting plate is connected to the first folding plate, and the other end is connected to the second folding plate, and the first folding plate and the second folding plate respectively form a predetermined angle of 80 to 100° with the two ends of the connecting plate, and the first folding plate and the second folding plate are in opposite directions.

[0015] Optionally, the support rod is arranged along the vertical direction, the connecting plate is connected to the support rod, and the multiple noise reduction plates are arranged in sequence at intervals, the distance between two adjacent noise reduction plates is equal, and the distance range is 200~300mm, and the connecting plate and the support rod have a set angle of 60~70°. The noise entering the silencer cavity is reflected, scattered and interfered multiple times through the channel formed by the noise reduction plate to form sound waves of different frequencies. The sound waves of different frequencies will cancel each other out when they meet, thereby reducing noise.

[0016] Optionally, the power generation device includes a power generation device chassis, a diesel engine, a generator and a diesel generator control component, the output end of the diesel engine is connected to the input end of the generator, the current output end of the generator is connected to the input end of the AC / DC conversion device, the diesel generator control component is connected to the control end of the diesel engine and the control end of the generator, the diesel engine and the generator are arranged on the power generation device chassis, and the power generation device chassis is detachably fixedly connected to the base of the carriage.

[0017] Optionally, the exhaust end of the diesel engine is connected to the input end of the smoke exhaust and silencer assembly.

[0018] Optionally, the AC / DC conversion device includes a conversion device chassis, and a rectifier assembly for converting the AC power generated by the power generation device into DC power and outputting it to the cable, an air cooling assembly for cooling the rectifier assembly, the rectifier assembly and the air cooling assembly are installed on the conversion device chassis, and the conversion device chassis is installed on the base of the carriage.

[0019] The present invention also provides an assembly method for the above-mentioned mobile ground-wire DC ice-melting vehicle, comprising: assembling the two modules of the power generation device and the AC / DC conversion device; hoisting the power generation device into the vehicle compartment, and detachably fixing it to the base by bolts; hoisting the AC / DC conversion device into the vehicle compartment, and detachably fixing it to the base by bolts; electrically connecting the input end of the AC / DC conversion device and the current output end of the power generation device; installing the bushing on the vehicle compartment, and connecting the bushing to the output end of the AC / DC conversion device by a copper bus; completing the connection between the smoke exhaust and silencer assembly and the exhaust holes on the partition of the vehicle compartment, and completing the connection between the air cooling assembly and the exhaust holes on the partition of the vehicle compartment; bending a steel plate into a noise reduction plate, and connecting one end of the connecting plate of the noise reduction plate to the first folding plate, and the other end to the second folding plate, and the first folding plate and the second folding plate are respectively connected to the connecting plate The two ends form a predetermined angle, and the first folding plate and the second folding plate are in opposite directions; the connecting plate is connected to the support rod, and multiple noise reduction plates are arranged in sequence at intervals, the distance between two adjacent noise reduction plates is equal, and the connecting plate and the support rod have a set angle, and the support rod is arranged on the inner wall of the silencer chamber along the vertical direction; a box body with honeycomb openings is made on two opposite sides parallel to the blinds, and fixing ears are made on the box body to fix the box body to the inner wall of the silencer chamber to form a silencer hole plate; the silencer hole plate and the blinds are installed on the ventilation window, and the silencer hole plate is located on the inner side of the blinds; the cable conveying device is hoisted onto the mobile vehicle and detachably fixedly connected to the mobile vehicle; the carriage with the power generation device and the AC / DC conversion device installed is hoisted onto the mobile vehicle, and the carriage is detachably fixedly connected to the mobile vehicle; the cable and the casing are connected.

[0020] The present invention provides a mobile ground-wire DC ice-melting vehicle and an assembly method thereof, which has the following beneficial effects:

[0021] First, because the mobile ground-line DC ice-melting vehicle includes a generator, it is an active device that does not require an external power supply and can meet the needs of ice melting at any location in the middle of the line outside the substation. Because the generator and the AC-DC converter are both carried by the mobile device, that is, the generator and the AC-DC converter are integrated into the mobile device, the AC-DC converter and the generator can be connected when the generator, the cable conveyor, and the AC-DC converter are integrated into the mobile device. Therefore, the mobile ground-line DC ice-melting vehicle does not need to connect cables at the ice-melting site, thereby reducing the time and workload of connecting the mobile ground-line DC ice-melting vehicle to the power supply and reducing the wiring faults between the mobile ground-line DC ice-melting vehicle and the power supply. In addition, all equipment required for ultra-high voltage ground-line ice melting is integrated into the mobile device. The primary and secondary connections between the equipment are connected and debugged at the factory, and do not require repeated disassembly and installation during use. This is very beneficial for routine operation and maintenance and mobile deployment of the ice-melting vehicle.

[0022] Secondly, the capacity of the UHV ground wire AC / DC conversion device generally ranges from 1 to 8MW, which is much larger than the capacity required for railway power grids and distribution lines. The size of each device will also increase accordingly. Integrating all the equipment required for UHV ground wire de-icing on one vehicle will place higher requirements on the miniaturization, compactness and modularization of each device. To achieve integration, the present invention has compactly designed each device of the UHV ground wire DC de-icing vehicle, and modularized the equipment according to its function.

[0023] Furthermore, the diesel generator set's compact design allows for simultaneous 10kV and 380V / 220V AC outputs, eliminating the need for additional step-up or step-down transformers. This reduces the size of the mobile ground-wire DC ice-melting vehicle and facilitates road transport. The 10kV AC output provides power for the AC / DC converter, while the 380V / 220V AC output powers the ice-melting control unit, diesel generator control unit, cable conveyor, interior lighting, and video surveillance systems.

[0024] Secondly, due to the large size of the equipment, doors would need to be installed around the carriage, which would be very large and would affect the overall strength, rigidity, and sealing of the entire carriage. Taking these issues into consideration, the present invention optimizes the carriage structure by providing equipment hoisting holes on the top of the carriage for equipment installation. This reduces the number and size of door openings in the carriage, improving overall strength. It also significantly reduces the workload during equipment installation or replacement or maintenance.

[0025] Secondly, the power generation unit and AC / DC converter are integrated into a miniaturized, compact, and heat-insulated vehicle compartment. This compartment, along with the cable conveyor and other accessories, is then deployed on a mobile vehicle. This mobile ground-line DC de-icing vehicle can be deployed on the move, eliminating the need for an external power source and enabling de-icing anywhere along the line outside the station.

[0026] Then, the electrical connection between the power generation device and the AC / DC conversion device is prefabricated in the factory in advance, saving the cable wiring, testing and debugging processes at the ice melting site, greatly reducing the workload of on-site construction personnel, shortening the time spent on ice melting construction, and gaining favorable time for power rescue and troubleshooting.

[0027] Then, all the equipment is integrated into a mobile vehicle. The primary and secondary connections between the equipment are connected and debugged before leaving the factory. There is no need for repeated disassembly and installation during use. This is very beneficial for the routine operation and maintenance and mobile deployment of the mobile ground-wire DC ice-melting vehicle.

[0028] Then, the car body has a partition, which divides the inner cavity of the car body into a working cavity and a silencer cavity. The power generation device and the AC / DC conversion device are arranged in the working cavity. An exhaust hole is opened on the partition. The exhaust hole is used to introduce the noise generated by the smoke exhaust and silencer components of the power generation device and the air cooling components of the AC / DC conversion device in the working cavity into the silencer cavity. The silencer cavity uses the silencer principles of resistive silencer and interference silencer to eliminate noise. Therefore, the noise generated by the mobile ground-wire DC ice melting vehicle can be effectively controlled, reducing noise pollution.

[0029] Finally, the placement of the cable conveyor fully considers the convenience of DC side line wiring. The cable is released through a winch, one end can be directly connected to the ice melting vehicle outlet bushing, and the other side is directly connected to the DC knife switch on the transmission line side to avoid secondary handling of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 1 is a front view of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0031] Figure 2 is a top view of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0032] Figure 3 1 is a front view of a power generation device of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0033] Figure 4 1 is a top view of a power generation device of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0034] Figure 51. This is a front view of an AC / DC converter of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0035] Figure 6 1. It is a top view of the AC / DC converter of the mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0036] Figure 7 1 is a front view of a carriage of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0037] Figure 8 1 is a top view of a carriage of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0038] Figure 9 Schematic diagram of the simplified structure of the carriage of the mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0039] Figure 10 1 is a schematic structural diagram of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention;

[0040] Figure 11 It is a partial structural diagram of the carriage of the mobile ground-wire DC ice-melting vehicle in an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 100-Generation device; 110-Generation device chassis; 120-Heat dissipation assembly; 130-Diesel engine; 140-Generator; 150-Diesel generator control assembly; 160-Smoke exhaust and silencer assembly;

[0043] 200-cable conveying device;

[0044] 300-AC / DC conversion device; 310-rectifier assembly; 320-air cooling assembly; 330-ice melting control assembly; 340-casing;

[0045] 400 - Mobile device; 410 - Mobile vehicle; 420 - Carriage; 421 - Metal profile; 422 - Sound-absorbing cotton layer; 423 - Partition; 424 - Shutter; 425 - Silencing chamber; 426 - Silencing hole plate; 427 - Noise reduction assembly; 4271 - Support rod; 4272 - Noise reduction plate; 4281 - Lifting hole; 4282 - Cover plate; 4291 - Operating door; 4292 - Inspection door; 430 - Hydraulic support device; 440 - Energy storage device;

[0046] 500-front of the vehicle. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 , Figure 1 1 is a front view of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 2 1 is a top view of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 3 1 is a front view of a power generation device 100 of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 4 FIG. 1 is a top view of a power generation device 100 of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 5 1 is a front view of an AC / DC converter 300 of a mobile ground-type DC ice-melting vehicle according to an embodiment of the present invention. Figure 6 FIG. 1 is a top view of an AC / DC converter 300 of a mobile ground-type DC ice-melting vehicle according to an embodiment of the present invention. Figure 7 4 is a front view of the carriage 420 of the mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 8 FIG. 4 is a top view of a carriage 420 of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 9 FIG. 4 is a simplified structural diagram of a carriage 420 of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 10 4 is a structural diagram of a mobile vehicle 410 of a mobile ground-wire DC ice-melting vehicle according to an embodiment of the present invention. Figure 11 This is a partial structural diagram of a carriage 420 of a mobile ground-wire DC ice-melting vehicle in an embodiment of the present invention. This embodiment provides a mobile ground-wire DC ice-melting vehicle, comprising a mobile device 400, a power generation device 100, and an AC / DC converter 300 for converting the AC power generated by the power generation device 100 into DC power and outputting it through a cable. The DC power output by the AC / DC converter 300 through the cable is connected to the power grid to be melted, and the power grid to be melted is melted using the DC heating and ice-melting principle. The mobile device 400 comprises a mobile vehicle 410 and a carriage 420. The carriage 420 is mounted on the mobile vehicle 410. The power generation device 100 is used to convert the AC power generated by the power generation device 100 into DC power. The device 100 and the AC / DC conversion device 300 are installed on the base of the carriage 420. The carriage 420 has a partition 423, which divides the inner cavity of the carriage 420 into a working chamber and a silencer chamber 425. The power generation device 100 and the AC / DC conversion device 300 are arranged in the working chamber. An exhaust hole is opened on the partition 423. The exhaust hole is used to introduce the noise in the working chamber and the noise generated by the smoke exhaust and silencer component 160 of the power generation device 100 and the air cooling component 320 of the AC / DC conversion device 300 into the silencer chamber 425. The silencer chamber 425 uses the silencer principles of resistive silencer and interference silencer to eliminate noise.

[0054] Since the mobile ground-line DC ice-melting vehicle includes a power generation device 100, the mobile ground-line DC ice-melting vehicle is an active device and does not require an external power supply. It can meet the demand for ice melting at any position in the middle of the line outside the substation; since the power generation device 100 and the AC-DC conversion device 300 are both carried by the mobile device 400, that is, the power generation device 100 and the AC-DC conversion device 300 are integrated on the mobile device 400, therefore, the AC-DC conversion device 300 and the power generation device 100 can be connected to each other on the power generation device 100 and the AC-DC conversion device 300. The device 300 is already connected when it is integrated on the mobile device 400. Therefore, the mobile ground-wire DC ice-melting vehicle does not need to connect cables at the ice-melting site, thereby saving time and workload for wiring the mobile ground-wire DC ice-melting vehicle to the power supply, and reducing wiring failures between the mobile ground-wire DC ice-melting vehicle and the power supply. In addition, all equipment required for ultra-high voltage ground-wire ice melting is integrated on the mobile device 400, and the primary and secondary connections between the equipment are connected and debugged at the factory. There is no need for repeated disassembly and installation during use, which is very beneficial to the routine operation and maintenance and mobile deployment of the ice-melting vehicle. In addition, the body of the carriage 420 has a partition 423, which divides the inner cavity of the body of the carriage 420 into a working cavity and a silencer cavity 425. The power generation device 100 and the AC / DC conversion device 300 are arranged in the working cavity. An exhaust hole is opened on the partition 423. The exhaust hole is used to introduce the noise in the working cavity and the noise generated by the smoke exhaust and silencer component 160 of the power generation device 100 and the air cooling component 320 of the AC / DC conversion device 300 into the silencer cavity 425. The silencer cavity 425 uses the silencer principles of resistive silencer and interference silencer to eliminate noise. Therefore, the noise generated by the mobile ground-wire DC ice melting vehicle can be effectively controlled, reducing noise pollution.

[0055] refer to Figure 3 and Figure 4 The power generation device 100 is a diesel generator 140. The capacity of the diesel generator 140 can be selected between 0.5 and 3 MW as needed. The diesel generator 140 includes a power generation device chassis 110, a diesel engine 130, a generator 140, and a diesel generator control assembly 150. The output end of the diesel engine 130 is connected to the generator 140, and the current output end of the generator 140 is connected to the input end of the AC-DC conversion device 300. The diesel generator control assembly 150 is connected to the control end of the diesel engine 130 and the control end of the generator 140. The diesel engine 130 and the generator 140 are arranged on the power generation device chassis 110, and the power generation device chassis 110 is detachably fixedly connected to the base of the carriage 420.

[0056] Specifically, the diesel engine 130 and the generator 140 are integrated on a generator chassis 110 through a compact design, and the generator chassis 110 is fixed to the bottom frame of the carriage 420 by bolts.

[0057] Preferably, the power generation device 100 also includes an insulating buffer pad, which is arranged between the power generation device base frame 110 and the base of the carriage 420. In this way, an insulating buffer pad is used between the power generation device base frame 110 and the base of the carriage 420 for vibration reduction, effectively reducing the vibration of the generator 140 group on the vehicle body when working, thereby achieving the purpose of vibration reduction and noise reduction.

[0058] The power generation device 100 further includes a heat dissipation component 120 for dissipating heat from the diesel engine 130 , the generator 140 , and the diesel generator control component 150 .

[0059] The power generation device 100 further includes a smoke exhaust and silencer assembly 160 connected to the diesel engine 130 .

[0060] The diesel generator control component 150 can display parameters such as the unit voltage, current, frequency, power, power factor, operating time, fuel level and power generation. The smoke exhaust and silencer component 160 discharges the exhaust gas emitted by the power generation device 100 during operation.

[0061] The power generation device 100 includes an oil tank, and the oil tank is provided with an exhaust port.

[0062] Preferably, the fuel tank is located in the compartment 420 of the mobile device 400, so as to prevent theft.

[0063] The fuel tank's refueling port is located on the side of the vehicle compartment 420 of the mobile device 400 to facilitate refueling of the power generation device 100. A drain valve is installed at the bottom of the fuel tank. Drains and oil drains are also located on the side of the vehicle compartment 420 of the mobile device 400 for draining waste oil or sewage during maintenance.

[0064] The power generation device 100 can simultaneously output 10kV and 380V / 220V AC power, wherein the 10kV AC output provides power for the AC / DC conversion device 300, and the 380V / 220V AC output provides power for the control component of the AC / DC conversion device 300, the diesel generator control component 150, the cable conveying device 200, and the interior lighting of the carriage 420.

[0065] refer to Figure 5 and Figure 6The AC / DC converter 300 utilizes a six-pulse thyristor rectifier module, boasting a compact design and requiring less reactive power than an AC converter. The trigger angle of the AC / DC converter 300 can be flexibly controlled, enabling both zero-start voltage and current boosting, making it suitable for a wide range of line and system conditions. The design of the AC / DC converter 300 fully considers the overall performance requirements of the DC converter 300, ensuring safe and reliable operation under all specified operating conditions. The AC / DC converter 300 also features a suitable maintenance access for inspection, equipment maintenance, and replacement of damaged components.

[0066] The AC / DC converter 300 includes a converter chassis, a rectifier assembly 310 for converting the AC power generated by the generator 100 into DC power and outputting it to the cable, and an air cooling assembly 320 for cooling the rectifier assembly 310. The rectifier assembly 310 and the air cooling assembly 320 are mounted on the converter chassis, which is in turn mounted on the base of the carriage 420. The air cooling assembly 320 exhausts heat from the carriage 420 through a dedicated duct using a powerful fan.

[0067] The AC / DC converter 300 also includes a vibration damper, through which the rectifier assembly 310 and the air cooling assembly 320 are mounted on the base of the vehicle compartment 420. This ensures the safe transportation of all components within the AC / DC converter 300, allowing the entire vehicle to continue operating normally for upflow ice melting after transportation.

[0068] The AC / DC converter 300 further includes an ice melting control assembly 330, which includes a control panel and a laptop computer. Ice melting operations can be performed remotely on the laptop computer to ensure the safety of the operator.

[0069] The AC / DC converter 300 further includes a bushing 340, which is mounted on the body of the carriage 420. One end of the bushing is connected to the rectifier assembly 310, and the other end is connected to the cable on the cable conveyor 200. The bushing includes an insulating housing and a copper busbar disposed within the insulating housing. One end of the copper busbar is connected to the rectifier assembly 310, and the other end is connected to the cable on the cable conveyor 200. The insulating housing is mounted on the body of the carriage 420.

[0070] refer to Figure 7 、 Figure 8 、 Figure 9 and Figure 10 The carriage 420 is detachably fixedly connected to the mobile vehicle 410 through a container-specific corner lock.

[0071] The body of the carriage 420 is fixed to a base of the carriage 420, which is mounted on the mobile vehicle 410. The power generation device 100 and the AC / DC converter 300 are mounted on the base and located within the carriage. This allows for highly integrated equipment and facilitates operation and maintenance.

[0072] The walls of the compartment are made of cold-rolled plates and sound-absorbing and heat-insulating materials, and have the characteristics of high strength, rainproof, sunproof, dustproof, anti-theft, anti-pollution, corrosion resistance, impact resistance, and wear resistance.

[0073] The compartment wall includes a metal profile 421 and a sound-absorbing cotton layer 422. The metal profile 421 is located on the outside of the compartment wall, while the sound-absorbing cotton layer 422 is located on the inside of the compartment wall. The metal profile 421 is made of a plastic-sprayed through-hole metal profile, while the sound-absorbing cotton layer 422 is made of a composite, flame-retardant, sound-absorbing rock wool that is harmless to the human body.

[0074] The floor of the compartment is made of patterned non-slip aluminum plate, which keeps the unit working properly and prevents it from rusting.

[0075] refer to Figure 11 The sidewall of the muffler chamber 425 is provided with a ventilation window, which is installed with a louver 424. The muffler chamber 425 has a muffler plate 426 and a noise reduction component 427. The muffler plate 426 is installed on the ventilation window and located inside the louver 424. The noise reduction component 427 is installed inside the muffler chamber 425. In this way, the multiple muffler structure composed of the muffler plate 426 and the noise reduction component 427 can reduce noise and avoid noise pollution.

[0076] Specifically, the silencer hole plate 426 includes a box body and a fixing ear piece for fixing the box body on the inner wall of the silencer cavity. The box body is parallel to the two opposite sides of the shutter 424 and is provided with honeycomb openings. The silencer hole plate 426 can absorb part of the sound wave energy. At the same time, the viscous resistance of the air and the vibration friction of the hole wall of the honeycomb opening convert the sound wave fluctuation energy into heat energy to reduce noise.

[0077] The spacing between the two opposing sides of the box body facing the louver 424 is 30 mm, which maximizes viscous resistance. As air passes through the honeycomb pores, the 30 mm depth prolongs the contact time between the sound waves and the pore walls, increasing friction between air molecules and the pore walls, thereby more effectively converting sound energy into heat. The honeycomb openings can be considered miniature Helmholtz resonators. The 30 mm depth may match the wavelength of sound waves of specific frequencies (such as low- and medium-frequency noise), absorbing noise in specific frequency bands through resonance. While ensuring a sufficient sound-absorbing cross-section, the 30 mm thickness avoids significantly affecting the ventilation efficiency of the louver. This thickness ensures the mechanical strength of the box body and prevents deformation due to airflow impact or acoustic pressure vibration, making it particularly suitable for high-speed airflow environments. This size facilitates integration into the installation space of the louver while meeting industrial standard modular design requirements, facilitating mass production and maintenance.

[0078] The noise reduction assembly 427 comprises a support rod 4271 secured to the inner wall of the silencing chamber 425 and a plurality of noise reduction plates 4272 mounted on the support rod 4271. By securing the noise reduction plates 4272 to the support rod 4271 within the silencing chamber 425, the noise reduction structural assembly is formed. Numerous specific sound wave reflection, scattering, and interference channels are formed within the noise reduction structural assembly. The operating noise of the power generation device 100 is significantly attenuated through multiple reflections, scattering, and interference as it passes through these channels.

[0079] The noise reduction plate 4272 includes a first folding plate 4273, a connecting plate 4274, and a second folding plate 4275. One end of the connecting plate 4274 is connected to the first folding plate 4273, and the other end is connected to the second folding plate 4275. The first folding plate 4273 and the second folding plate 4275 form a predetermined angle of 80 to 100 degrees with the ends of the connecting plate 4274, respectively. The first folding plate 4273 and the second folding plate 4275 are oriented in opposite directions. The first folding plate 4273, the connecting plate 4274, and the second folding plate 4275 are connected in a Z-shape. When a sound wave hits the first folding plate, part of the sound wave is directly reflected, while the other part is transmitted to the second folding plate through the connecting plate. Because the two folding plates face opposite directions and are at a certain angle, the propagation paths of the reflected sound waves differ, causing the sound waves to scatter in space. The superposition of sound waves of different phases may form destructive interference, thereby reducing the noise energy in a specific frequency band (especially at an angle of 80 to 100 degrees, the interference effect on medium and high frequency sound waves is more significant). At the same time, the predetermined angle forces the sound waves to be reflected multiple times between the folded plates, increasing the length of the propagation path. If the folded plate and the connecting plate form a closed or semi-closed cavity, a Helmholtz resonance structure may be formed, which can absorb specific frequency noise (such as low-frequency hum) through the cavity-opening resonance effect. The design of the first folded plate 4273 and the second folded plate 4275 in opposite directions can disperse the concentrated sound energy in different directions, reducing the intensity of the direct sound.

[0080] Preferably, the support rod 4271 is arranged along the vertical direction, the connecting plate 4274 of the noise reduction plate 4272 is connected to the support rod 4271, and the multiple noise reduction plates 4272 are arranged in sequence at intervals, the distance between two adjacent noise reduction plates 4272 is equal, and the distance range is 200 to 300 mm, and the first folding plate 4273 has a set angle of 60 to 70 degrees with the vertical plane. The noise entering the silencer cavity is reflected, scattered, and interfered with multiple times through the channel formed by the noise reduction plate 4272 to form sound waves of different frequencies. When the sound waves of different frequencies meet, they will cancel each other out, thereby reducing noise. The folding plate structure of the noise reduction plate (the first folding plate, the second folding plate, and the connecting plate form an angle of 80 to 100 degrees) and the interval arrangement (200 to 300 mm) can cover sound waves of different frequencies. High-frequency noise is easily reflected and scattered, and low-frequency noise is offset by interference, thereby achieving broadband noise reduction. Noise is reflected multiple times in the non-linear channels formed by the folded plates. Sound waves along different paths interfere with each other due to phase differences (especially in the frequency band where the wavelength matches the structural dimensions), resulting in significant energy attenuation. The folded plates' opposing orientations increase sound wave scattering and extend the propagation path. The 60-70° angle between the connecting plates and the support rods, along with their uniform spacing (200-300mm), ensures sufficient diffusion and interference of sound waves, avoiding localized sound energy concentration and improving overall noise reduction uniformity.

[0081] Specifically, the connecting plate 4274 is welded to the supporting rod 4271 .

[0082] Preferably, there are multiple noise reduction components 427, and the multiple noise reduction components 427 are arranged in sequence and spaced apart along the horizontal direction.

[0083] Preferably, the exhaust hole is connected to the end of the smoke exhaust and silencer assembly 160 , and the exhaust hole is also connected to the exhaust end of the air cooling assembly 320 .

[0084] The top of the carriage is provided with a lifting hole 4281, to which a cover plate 4282 is detachably mounted, and a sealing strip is provided between the cover plate 4282 and the lifting hole 4281. This allows only maintenance and operation doors 4291 to be provided on the side walls of the carriage 420, reducing the number and size of doors in the carriage 420 and improving the overall strength of the carriage 420. This also significantly reduces the workload during equipment installation, replacement, or maintenance.

[0085] Specifically, the hanging hole 4281 and the cover plate 4282 are provided with waterproof bending structures that cooperate with each other, and the sealing strip is provided in the waterproof bending structure.

[0086] The cover plate 4282 is made by bending a metal plate and filling the interior with fireproof and heat-insulating rock wool.

[0087] An operating door 4291 and an inspection door 4292 are provided on the wall of the compartment, and a working inspection ladder is fixed on the operating door 4291 .

[0088] An emergency stop switch of the power generation device 100 is provided outside the compartment, so as to facilitate emergency shutdown when an abnormal situation occurs in the unit.

[0089] The carriage 420 further includes a fire extinguisher disposed within the carriage.

[0090] The base is provided with a grounding copper bar running through it in the length direction. The grounding copper bar is led out from the front and rear end surfaces of the compartment body for reliable grounding of the equipment.

[0091] The carriage 420 also includes a lighting system to facilitate observation of the opening and closing of the electric knife switch and the status of the equipment inside the device.

[0092] The carriage 420 also includes a video monitoring system that can be used for background monitoring.

[0093] The electrical wiring in Carriage 420 is installed in a beautiful and reasonable manner through PVC flame-retardant insulating tube. Carriage 420 has an IP55 protection level, meeting the requirements of waterproof, dustproof and small animal protection.

[0094] The mobile vehicle 410 can be a gooseneck high-low plate semi-trailer.

[0095] A tool box is provided on the side of the mobile vehicle 410 for placing related maintenance tools, a grounding cable reel, a special grounding rod for electricity and other items.

[0096] The mobile ground-line DC ice-melting vehicle further includes a hydraulic support device 430 , which includes an operating box and hydraulic support legs. The hydraulic support legs are provided on the mobile vehicle 410 , and the operating box is used to control the lifting and lowering of the hydraulic support legs.

[0097] The mobile ground-line DC ice melting vehicle also includes a level meter installed at the diagonal position of the mobile vehicle 410. Each hydraulic support leg can be operated independently, and in conjunction with the level meter at the front and rear diagonal positions of the vehicle, the vehicle can be placed horizontally and leveled on uneven ground, avoiding long-term heavy loads on the tires and body.

[0098] Specifically, the hydraulic support legs are bolted to the vehicle's frame at the appropriate position. During use, the legs extend downward to touch the ground, lifting the vehicle body. This supports the majority of the vehicle's weight, maintaining stability. After use, the legs retract upward to a sufficient height above the ground, ensuring sufficient ground clearance for safe driving and protecting the tires and equipment. The hydraulic support legs are equipped with a mechanical auxiliary locking device, and the leg bearing plate has a large contact area with the ground, resulting in low load per unit area and excellent stability.

[0099] The mobile ground-wire DC ice-melting vehicle also includes an energy storage device 440 for powering the hydraulic support system 430. The energy storage device 440 has a 12V output voltage and can provide operating power for the hydraulic support system even without the tractor 500. The energy storage device 440 is equipped with a charging device that can regularly charge the battery to prevent it from being depleted due to prolonged storage.

[0100] Preferably, the mobile ground-line DC ice-melting vehicle further includes an auxiliary support device for cooperating with the hydraulic support device 430. After the hydraulic support legs level the vehicle in place, the auxiliary support device crank is used to support the mechanical legs on the ground, thereby preventing the hydraulic support device 430 from supporting the vehicle for a long time and releasing pressure, which may cause the vehicle to tilt or overturn.

[0101] The mobile ground-wire DC ice-melting vehicle also includes a cable conveying device 200, which includes a conveying chassis, a motor, a reducer, a clutch pin, a winch for winding the cable, and a spiral handbrake for limiting the rotation of the winch. The motor and reducer are detachably fixedly mounted on the conveying chassis, and the winch is rotatably mounted on the conveying chassis. The conveying chassis is mounted on the mobile vehicle 410. The output shaft of the motor is connected to the input shaft of the reducer, which is rotatably connected to the rotating shaft of the winch. The clutch pin is mounted on the winch, and the output shaft of the reducer and the rotating shaft of the winch are provided with a structural hole for inserting the clutch pin.

[0102] When the clutch pin is pulled out of the structural hole, the winch does not rotate with the shaft. When the clutch pin is inserted into the structural hole, the winch rotates with the shaft, so that the winch can realize the function of retracting and releasing the cable alone.

[0103] Specifically, the spiral handbrake is connected to the rotating shaft of the winch. The power consumption of the motor comes from the 380V / 220V AC output of the power generation device 100.

[0104] The cable conveyor 200 has a stop lock function and a dual brake function. After paying out the cable, the power switch is turned off to stop the motor. The motor's self-locking function can lock the winch to a fixed position. At the same time, the locking bolt of the spiral handbrake device is tightened to lock the winch.

[0105] Preferably, the winch has an air switch to prevent excessive current caused by circuit short circuit or external force that causes the turntable to get stuck, thereby protecting the safety of the control circuit and motor of the cable winch.

[0106] The mobile ground-wire DC ice-melting vehicle further includes a vehicle head 500 , which is detachably fixedly connected to the mobile device 400 .

[0107] This embodiment also provides an assembly method for a mobile ground-wire DC ice-melting vehicle, comprising:

[0108] The two modules of the power generation device 100 and the AC / DC conversion device 300 are assembled;

[0109] The power generation device 100 is hoisted into the carriage 420 and detachably fixedly connected to the base;

[0110] Hoist the AC / DC converter 300 into the carriage 420 and detachably and securely connect it to the base;

[0111] Electrically connect the input end of the AC / DC converter 300 and the current output end of the power generation device 100;

[0112] Install the bushing 340 on the carriage, and connect the bushing 340 to the output end of the AC / DC converter 300 via a copper busbar;

[0113] Complete the connection between the smoke exhaust and silencer assembly 160 and the exhaust hole on the partition of the compartment, and complete the connection between the air cooling assembly 320 and the exhaust hole on the partition of the compartment;

[0114] A steel plate is bent into a noise reduction plate 4272, and one end of a connecting plate 4274 of the noise reduction plate 4272 is connected to the first folded plate 4273, and the other end is connected to the second folded plate 4275. The first folded plate 4273 and the second folded plate 4275 form predetermined angles with the ends of the connecting plate 4274, respectively. The first folded plate 4273 and the second folded plate 4275 face opposite directions.

[0115] Connect the connecting plate 4274 to the support rod 4271, and arrange multiple noise reduction plates 4272 in sequence, with the distance between two adjacent noise reduction plates 4272 being equal. The connecting plate 4274 and the support rod 4271 have a set angle, and the support rod 4271 is arranged on the inner wall of the muffler chamber 425 along the vertical direction;

[0116] A box body with honeycomb-shaped openings is made on two opposite sides parallel to the shutter 424, and fixing tabs are made on the box body to fix the box body to the inner wall of the muffler cavity to form a muffler hole plate 426;

[0117] Install the sound-absorbing hole plate 426 and the louver 424 on the ventilation window, and make the sound-absorbing hole plate 426 be located inside the louver 424;

[0118] The cable conveying device 200 is hoisted onto the mobile vehicle 410 and is detachably fixedly connected to the mobile vehicle 410;

[0119] The carriage 420 with the power generation device 100 and the AC / DC converter 300 installed is hoisted onto the mobile vehicle 410, and the carriage 420 and the mobile vehicle 410 are detachably fixedly connected;

[0120] Connect the cable and the sleeve (340).

[0121] The predetermined angle is 80-100 degrees. The distance between two adjacent noise reduction plates 4272 is equal and the distance range is 200-300 mm. The included angle is set to 60-70 degrees.

[0122] Specifically, hoisting the generator 100 into the carriage 420 and detachably fixing it to the base includes: hoisting the AC / DC converter 300 into the carriage 420 through a hoisting hole 4281 opened on the top of the carriage 420 of the mobile device 400 by a traveling crane; corresponding bolt mounting holes are reserved at corresponding positions on the base of the carriage 420 and the generator base frame 110; after fine-tuning the position of the generator 100 to align with the bolt mounting holes, the generator 100 is detachably fixed to the base by bolts;

[0123] Hoisting the AC / DC converter 300 into the carriage 420 and detachably fixing it to the base includes: hoisting the ice melter into the carriage 420 through the hoisting hole 4281 opened on the top of the carriage 420 of the mobile device 400 using a traveling crane; corresponding bolt mounting holes are reserved at corresponding positions on the base of the carriage 420 and the converter chassis; after fine-tuning the position of the AC / DC converter 300 to align with the bolt mounting holes, the AC / DC converter 300 is fixed to the base with bolts;

[0124] Electrically connecting the input end of the AC / DC converter 300 and the output end of the power generation device 100 includes: connecting the high-voltage connecting cable / copper busbar, low-voltage control cable and power cable between the AC / DC converter 300 and the power generation device 100.

[0125] The cable conveying device 200 is hoisted onto the mobile vehicle 410 and is detachably fixedly connected to the mobile vehicle 410, including: the cable conveying device 200 is hoisted onto the mobile vehicle 410 of the mobile device 400 by a crane, corresponding bolt mounting holes are reserved at corresponding positions on the conveying base frame and the mobile vehicle 410, and after fine-tuning the position of the cable conveying device 200 to align with the bolt mounting holes, the cable conveying device 200 is fixed to the base by bolts.

[0126] The carriage 420 after the installation of the power generation device 100 and the AC-DC conversion device 300 is hoisted onto the mobile vehicle 410, and the carriage 420 is detachably fixedly connected to the mobile vehicle 410, including: the carriage 420 after the installation of the power generation device 100 and the AC-DC conversion device 300 is hoisted onto the mobile vehicle 410 by a crane, the container lock tongue on the mobile vehicle 410 is aligned with the lock hole on the carriage 420, and the lock tongue is locked to complete the fixation of the carriage 420.

[0127] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A mobile ground-wire DC ice-melting vehicle, comprising a moving device (400), characterized in that: The invention also includes a power generation device (100) and an AC / DC conversion device (300) for converting the AC power generated by the power generation device (100) into DC power and outputting the power through a cable. The DC power output by the AC / DC conversion device (300) through the cable is connected to the power grid to be de-iced, and the power grid to be de-iced is de-iced using the DC heating de-icing principle. The mobile device (400) includes a mobile vehicle (410) and a carriage (420). The carriage (420) is installed on the mobile vehicle (410). The power generation device (100) and the AC / DC conversion device (300) are installed on the base of the carriage (420). The compartment (420) has a partition (423), and the partition (423) divides the inner cavity of the compartment (420) into a working cavity and a silencer cavity (425). The power generation device (100) and the AC / DC conversion device (300) are arranged in the working cavity. An exhaust hole is opened on the partition (423), and the exhaust hole is used to introduce the noise generated in the working cavity and the smoke exhaust silencer component (160) of the power generation device (100) and the air cooling component (320) of the AC / DC conversion device (300) into the silencer cavity (425). The silencer cavity (425) uses the principles of resistive silencer and interference silencer to eliminate noise.

2. The mobile ground-wire DC ice-melting vehicle according to claim 1, characterized in that: A ventilation window is provided on the side wall of the silencing chamber (425), and a shutter (424) is installed on the ventilation window. The silencing chamber (425) has a silencing hole plate (426) and a noise reduction component (427). The silencing hole plate (426) is installed on the ventilation window and located on the inner side of the shutter (424), and the noise reduction component (427) is installed in the silencing chamber (425).

3. The mobile ground-wire DC ice-melting vehicle according to claim 2, characterized in that: The muffler hole plate (426) includes a box body and a fixing ear piece for fixing the box body on the inner wall of the muffler cavity. The box body is parallel to the two opposite sides of the shutter (424) and is provided with honeycomb openings. The muffler hole plate (426) can absorb part of the sound wave energy. At the same time, the viscous resistance of the air and the vibration friction of the hole wall of the honeycomb opening convert the sound wave fluctuation energy into heat energy to reduce noise.

4. The mobile ground-wire DC ice-melting vehicle according to claim 3, characterized in that: The noise reduction assembly (427) includes a support rod (4271) fixed on the inner wall of the muffler chamber (425) and a plurality of noise reduction plates (4272) arranged on the support rod (4271).

5. The mobile ground-wire DC ice-melting vehicle according to claim 4, characterized in that: The noise reduction plate (4272) includes a first folding plate (4273), a connecting plate (4274) and a second folding plate (4275), one end of the connecting plate (4274) is connected to the first folding plate (4273), and the other end is connected to the second folding plate (4275), and the first folding plate (4273) and the second folding plate (4275) respectively form a predetermined angle of 80 to 100 degrees with the two ends of the connecting plate (4274), and the first folding plate (4273) and the second folding plate (4275) are in opposite directions.

6. The mobile ground-wire DC ice-melting vehicle according to claim 5, characterized in that: The support rod (4271) is arranged along the vertical direction, the connecting plate (4274) is connected to the support rod (4271), and the multiple noise reduction plates (4272) are arranged in sequence at intervals, the distance between two adjacent noise reduction plates (4272) is equal, and the distance range is 200 to 300 mm, and the connecting plate (4274) and the support rod (4271) have a set angle of 60 to 70 degrees. The noise entering the silencer cavity is reflected, scattered and interfered multiple times through the channel formed by the noise reduction plate (4272) to form sound waves of different frequencies. The sound waves of different frequencies will cancel each other out when they meet, thereby reducing noise.

7. The mobile ground-wire DC ice-melting vehicle according to claim 1, characterized in that: The power generation device (100) comprises a power generation device chassis (110), a diesel engine (130), a generator (140) and a diesel generator control assembly (150); the output end of the diesel engine (130) is connected to the input end of the generator (140); the current output end of the generator (140) is connected to the input end of the AC / DC conversion device (300); the diesel generator control assembly (150) is connected to the control end of the diesel engine (130) and the control end of the generator (140); the diesel engine (130) and the generator (140) are arranged on the power generation device chassis (110); and the power generation device chassis (110) is detachably fixedly connected to the base of the carriage (420).

8. The mobile ground-wire DC ice-melting vehicle according to claim 7, characterized in that: The exhaust end of the diesel engine (130) is connected to the input end of the smoke exhaust and silencer assembly (160).

9. The mobile ground-wire DC ice-melting vehicle according to claim 1, characterized in that: The AC / DC conversion device (300) comprises a conversion device chassis, and a rectifier assembly (310) for converting AC power generated by a power generation device into DC power and outputting the DC power to the cable; an air cooling assembly (320) for cooling the rectifier assembly; the rectifier assembly (310) and the air cooling assembly (320) are mounted on the conversion device chassis, and the conversion device chassis is mounted on a base of the carriage (420).

10. An assembly method for a mobile ground-wire DC ice-melting vehicle according to any one of claims 1 to 9, characterized in that: include: The two modules of the power generation device (100) and the AC / DC conversion device (300) are assembled; The power generation device (100) is hoisted into the vehicle compartment and detachably fixedly connected to the base via bolts; The AC / DC converter (300) is hoisted into the carriage and is connected to the base in a detachable and fixed manner via bolts; electrically connecting the input end of the AC / DC conversion device (300) and the current output end of the power generation device (100); The bushing (340) is installed on the carriage, and the bushing (340) is connected to the output end of the AC / DC conversion device (300) via a copper busbar; The smoke exhaust and silencer assembly is connected to the exhaust hole on the partition of the compartment, and the air cooling assembly (320) is connected to the exhaust hole on the partition of the compartment; A stainless steel plate is bent into a noise reduction plate (4272), and one end of a connecting plate (4274) of the noise reduction plate (4272) is connected to a first folding plate (4273), and the other end is connected to a second folding plate (4275), the first folding plate (4273) and the second folding plate (4275) respectively forming a predetermined angle with the two ends of the connecting plate (4274), and the first folding plate (4273) and the second folding plate (4275) are oriented in opposite directions; The connecting plate (4274) is connected to the support rod (4271), and the plurality of noise reduction plates (4272) are sequentially arranged at intervals, with the distance between two adjacent noise reduction plates (4272) being equal, and the connecting plate (4274) and the support rod (4271) having a set angle, and the support rod (4271) is arranged on the inner wall of the muffler cavity (425) along the vertical direction; A box body with honeycomb-shaped openings is made on two opposite sides parallel to the shutter (424), and fixing ears are made on the box body to fix the box body on the inner wall of the silencer cavity to form a silencer hole plate (426); Installing the muffler plate (426) and the louver (424) on the AC / DC ventilation window, with the muffler plate (426) located on the inner side of the louver (424); The cable conveying device (200) is hoisted onto the mobile vehicle (410) and is detachably fixedly connected to the mobile vehicle (410); The carriage with the power generation device (100) and the AC / DC conversion device (300) installed is hoisted onto a mobile vehicle, and the carriage is detachably fixedly connected to the mobile vehicle (410); Connect the cable and the sleeve (340).

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