Intelligent cleaning, ventilating and heat dissipating device for double-power rail vehicle

Abstract

The application discloses a kind of double power rail vehicle with intelligent cleaning ventilation heat dissipation device, including centrifugal ventilator, water radiator, main ventilation passage, main generator ventilation passage, traction motor ventilation passage, composite filter, high-pressure cleaning system and heat dissipation device controller;Water radiator is provided with differential pressure sensor;According to the control logic of heat dissipation device controller, without affecting the normal operation of vehicle, when differential pressure sensor reaches the set differential pressure P1 or P2 and variable flow water temperature does not exceed the set value, blow dust or carry out high-pressure air dust removal to water radiator core;When reaching the set differential pressure P1 or P2, and variable flow water temperature is greater than the set value, high-pressure liquid cleaning is carried out.The application discloses a kind of double power rail vehicle with intelligent cleaning ventilation heat dissipation device, can simultaneously ventilate and heat dissipate main generator of internal combustion mode, traction inverter and traction motor shared by internal combustion and electric dual mode, and has intelligent self-cleaning function.

Description

Technical Field

[0001] This invention relates to ventilation and heat dissipation devices for rail vehicles, and more particularly to an intelligent cleaning, ventilation, and heat dissipation device for dual-power rail vehicles. Background Technology

[0002] Dual-power rail vehicles are hybrid rail vehicles, with two independent power sources that provide power to the rail vehicle as the driving force for the rotation of the wheelsets under different power modes.

[0003] Dual-powered rail vehicles employ a combination of overhead contact line power supply and diesel generator power supply. When the rail vehicle is operating in an unpowered area, the diesel generator provides power; once it enters a powered area, the pantograph rises and contacts the overhead contact line, providing power from the line. Therefore, proper ventilation and effective dust control are crucial for the long-term stable operation of the vehicle.

[0004] During the operation of the ventilation and heat exchange system in rail vehicles, dust and debris in the air adhere to the surface of the radiator and inside the fins, increasing the pressure loss of the air inlet and outlet, and reducing ventilation volume and heat dissipation capacity. Currently, railway operators restore the cooling capacity of radiators by periodically cleaning the radiator core manually. This method is not only labor-intensive but may also lead to over-cleaning, affecting the radiator's lifespan. Therefore, how to clean radiators reasonably and reduce manual labor intensity is an urgent technical problem that needs to be solved for heat dissipation systems. Summary of the Invention

[0005] To address the problems of unreasonable cleaning and high labor intensity in existing ventilation and heat dissipation device technologies, the present invention aims to provide an intelligent cleaning, ventilation and heat dissipation device for dual-power rail vehicles, which can simultaneously ventilate and dissipate heat on the main generator in internal combustion mode, the traction converter and traction motor shared by both internal combustion and electric modes, and has an intelligent self-cleaning function.

[0006] To achieve the above objectives, the technical solution of the present invention includes a centrifugal fan, a water radiator, a main ventilation duct, a main generator ventilation duct, a traction motor ventilation duct, a composite filter, a high-pressure cleaning system, and a heat dissipation device controller. The main generator ventilation duct and the traction motor ventilation duct are connected in parallel and then connected to the air outlet of the centrifugal fan through the main ventilation duct. Cooling air, driven by the centrifugal fan, is filtered by the composite filter and then enters the water radiator. A differential pressure sensor is installed on the air outlet chamber of the water radiator, and a variable flow water temperature sensor is installed on the water outlet pipe of the water radiator. The heat dissipation device controller can directly acquire the differential pressure sensor signal and read the variable flow water temperature sensor signal from the vehicle control system via the CAN bus.

[0007] The high-pressure cleaning system includes a high-pressure cleaning pump, a liquid storage tank, liquid pipelines, gas pipelines, a medium switching valve, a cleaning pipeline network, and cleaning nozzles installed on the cleaning pipeline network. The cleaning pipeline network is installed on the air outlet cavity of the water radiator, and the spray area of ​​the cleaning nozzles covers the surface of the water radiator core.

[0008] When the differential pressure sensor reaches the set differential pressure P1 and the variable flow water temperature does not exceed the set value, the centrifugal fan runs in reverse under the control of the heat dissipation device controller to blow air and remove dust from the water radiator core. At this time, the high-pressure cleaning system is turned off.

[0009] When the differential pressure sensor reaches the set differential pressure P2 and the variable flow water temperature does not exceed the set value, the high-pressure gas enters the cleaning pipeline through the medium switching valve and is sprayed out through the cleaning nozzle to perform high-pressure air dust removal on the water radiator core.

[0010] When the differential pressure sensor reaches the set differential pressure P1 or P2, and the variable flow water temperature is greater than the set value, the high-pressure cleaning pump will send high-pressure liquid into the cleaning pipeline through the medium switching valve and spray it out through the cleaning nozzle to perform high-pressure liquid cleaning on the water radiator core.

[0011] Furthermore, P2 is greater than P1, where P1 is the pressure difference generated by low-level dirt and P2 is the pressure difference generated by medium-level dirt.

[0012] Furthermore, an air regulating valve is installed on the main generator ventilation duct, and the opening of the air regulating valve is controlled by the heat dissipation device controller to control the ventilation volume entering the main generator ventilation duct and the ventilation volume entering the traction motor ventilation duct.

[0013] When power is supplied through the overhead contact line, the air regulating valve is completely closed, the main generator does not supply air, and all air is supplied to the traction motor;

[0014] When powered by a diesel engine, the air control valve is fully open, simultaneously supplying air to the main generator and traction motor.

[0015] Furthermore, the composite filter includes a mesh filter and a combination filter. Cooling air is filtered sequentially through the mesh filter and the combination filter under the drive of the centrifugal fan. The combination filter adopts a corrugated and semi-circular tube alternating combination structure.

[0016] Furthermore, the cleaning pipeline network is a mesh structure composed of pipelines; the cleaning nozzles adopt a structure with multiple small holes.

[0017] Furthermore, the water radiator adopts an aluminum plate-fin structure, and a sealing groove is provided on the mounting flange of the water radiator, with a rubber sealing strip installed in the sealing groove; a clip-on sealing strip is installed on the air outlet cavity of the water radiator, and the centrifugal fan is sealed to the air outlet cavity of the water radiator through the clip-on sealing strip; the water inlet and outlet flanges of the water radiator are respectively connected to the inlet and outlet of the traction converter through pipelines.

[0018] Furthermore, the centrifugal fan includes a collector, a centrifugal impeller, a volute, a motor, and a fan mounting base. The centrifugal fan is mounted on the vehicle frame via the fan mounting base, and the speed of the centrifugal fan is controlled by the heat dissipation device controller.

[0019] Furthermore, the heat dissipation device controller collects temperature signals from the variable flow water, main generator, and traction motor via the CAN bus to control the speed of the centrifugal fan.

[0020] Furthermore, there are multiple traction motors, which are connected in parallel on the bogie.

[0021] Furthermore, the main ventilation duct is connected to the outlet of the centrifugal fan via a flexible fan duct; the main generator and the traction motor are respectively connected to the main generator ventilation duct and the traction motor ventilation duct via flexible fan ducts.

[0022] Furthermore, an installation opening is provided on the side wall of the dual-powered rail vehicle body, and the water radiator is installed in the installation opening.

[0023] In summary, the present invention has the following beneficial effects: it highly integrates the distributed cooling systems currently used in rail vehicles, such as the traction converter liquid cooling system, traction motor ventilation and cooling system, and main generator ventilation and cooling system, resulting in a compact structure, reduced number of components, and reduced weight and space size of the ventilation and heat dissipation device, thus meeting the requirements of dual-power rail vehicles for miniaturization and lightweighting of components.

[0024] First, this application uses a differential pressure sensor to measure the pressure difference between the air entering and exiting the water radiator, and controls the cleaning method through its own heat dissipation device controller to achieve automatic cleaning of the water radiator. This eliminates the need for regular manual cleaning on the ground, reduces labor intensity, and avoids the impact of unreasonable and excessive cleaning of the water radiator on its service life.

[0025] Secondly, this application employs a single centrifugal fan to simultaneously cool the traction motor, converter radiator, and main generator. An integrated cooling system controller controls the opening of the air regulating valve, thereby controlling the airflow into the main generator ventilation duct and the traction motor ventilation duct, automatically distributing the airflow according to operating conditions. Simultaneously, this application integrates the separately arranged traction motor and traction converter cooling systems together, reducing the overall size and weight of the ventilation and cooling system while meeting the space and weight requirements of dual-power rail vehicles. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front view of the onboard arrangement of an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention.

[0028] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0029] Figure 3 for Figure 1 Enlarged view of part B in the image;

[0030] Figure 4 This is a top view of the onboard arrangement of an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention.

[0031] Figure 5 for Figure 4 Enlarged view of section C in the image;

[0032] Figure 6 This is a side view of the onboard arrangement of an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention.

[0033] Figure 7 This is a schematic diagram of the water radiator in an intelligent cleaning, ventilation and heat dissipation device for dual-power rail vehicles disclosed in this invention.

[0034] Figure 8 This is a schematic diagram of the cleaning nozzle in an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention;

[0035] Figure 9 This is a schematic diagram of the composite filter in an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention;

[0036] Figure 10 This is a schematic diagram of the controller control principle in an intelligent cleaning, ventilation and heat dissipation device for dual-powered rail vehicles disclosed in this invention.

[0037] In the diagram: 1. Radiator controller; 2. Composite filter; 3. Water radiator; 4. Centrifugal fan; 5. Fan flexible air duct; 6. Main ventilation duct; 7. Traction motor ventilation duct; 8. Traction motor flexible air duct; 9. Main generator ventilation duct; 10. Air regulating valve; 11. Main generator flexible air duct; 12. Diesel engine; 13. Main generator; 14. Traction motor; 15. Bogie; 16. High-pressure cleaning system; 1601. Liquid storage tank; 1602. High-pressure cleaning pump; 1603. Liquid pipeline; 1604. Medium 1605. Switching valve; 1606. Gas pipeline; 1607. Cleaning pipeline; 1608. Cleaning nozzle; 17. Rubber sealing strip; 18. Card-type sealing strip; 201. Mesh filter; 202. Combined filter; 301. Water radiator air outlet cavity; 301-1. Differential pressure sensor; 302. Water radiator mounting flange; 303. Water radiator inlet and outlet flanges; 304. Water radiator core; 401. Fan mounting base; 402. Collector; 403. Centrifugal impeller; 404. Volute; 405. Electric motor. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the appendices in the embodiments of the present invention. Figure 1-10 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Combination Figure 1 , Figure 2 and Figure 3A smart cleaning, ventilation, and heat dissipation device for dual-power rail vehicles includes a centrifugal fan 4, a water radiator 3, a main ventilation duct 6, a main generator ventilation duct 9, a traction motor ventilation duct 7, a composite filter 2, a high-pressure cleaning system 16, a heat dissipation device controller 1, and an air regulating valve 10. The heat dissipation device controller 1 collects temperature signals from the variable flow water (the variable flow water is the water flowing in the water radiator 3 and the inlet and outlet water pipes), the main generator 13, and the traction motor 14 via a CAN bus, and controls the centrifugal fan 4 and the air regulating valve 10. Based on the real-time collected variable flow water temperature signal, traction motor 14 temperature signal, and main generator 13 temperature signal, the controller logic controls the speed of the centrifugal fan 4, which can dynamically adjust the speed of the centrifugal fan 4, reduce auxiliary power consumption, reduce noise, improve the rail vehicle's adaptability to the environment, and meet the requirements of energy saving and environmental protection.

[0040] The side wall of the dual-power rail vehicle body has an installation port, in which the water radiator 3 is installed. The composite filter 2 is installed on the air inlet side of the water radiator 3. The main generator ventilation duct 9 and the traction motor ventilation duct 7 are connected in parallel and then connected to the air outlet of the centrifugal fan 4 through the main ventilation duct 6. The cooling air enters the water radiator 3 after being filtered by the composite filter 2 under the drive of the centrifugal fan 4, and then cools the variable flow water. After passing through the centrifugal fan 4, the air enters the main ventilation duct 6, and then enters the traction motor ventilation duct 7 and the main generator ventilation duct 9 respectively, supplying the traction motor 14 and the main generator 13 with ventilation and cooling respectively. The centrifugal fan 4 integrated into the ventilation and heat dissipation device simultaneously cools the traction motor 14 and the main generator 13. The centrifugal fan 4 is positioned behind the water radiator 3 inside the vehicle, freeing up the space under the vehicle previously occupied by the ventilation system for the traction motor 14. This reduces the space occupied by the ventilation equipment, lowers the weight and size of the ventilation and heat dissipation device, and provides space for the traction transformer and its associated cooling system. The converter water radiator 3 is mounted on the side wall of the vehicle, and the centrifugal fan 4 integrated into the ventilation and heat dissipation device draws air from the side wall to cool the water radiator 3. This frees up the interior space previously occupied by the converter heat dissipation device, providing space for an additional power system. This technical solution meets the requirements for miniaturization and weight reduction of components in dual-power rail vehicles.

[0041] In a specific embodiment, combined with Figure 1 and Figure 4 There are multiple traction motors, which are connected in parallel on the bogie 15. The multiple traction motors 14 and the main generator 13 are cooled simultaneously by the centrifugal fan 4 of the ventilation and heat dissipation device.

[0042] In a specific embodiment, the centrifugal fan 4 includes a collector 402, a centrifugal impeller 403, a volute 404, a motor 405, and a fan mounting base 401. The centrifugal fan 4 is mounted on the vehicle frame via the fan mounting base 401. The collector 402 is sealed to the air outlet cavity of the water radiator 3 via a clip-on sealing strip 18. The water inlet and outlet flanges 303 of the water radiator are respectively connected to the inlet and outlet of the traction converter, which can prevent rainwater in the cooling air from entering the vehicle body through the gap between the air outlet cavity of the water radiator 3 and the collector 402 of the centrifugal fan 4.

[0043] In a specific embodiment, combined with Figure 4 and Figure 2 The water radiator 3 adopts an aluminum plate-fin structure. The water radiator mounting flange 302 is provided with a sealing groove, and a rubber sealing strip 17 is installed in the sealing groove to prevent rainwater from outside the vehicle from entering the vehicle body through the gap between the water radiator mounting flange 302 and the side wall of the vehicle body.

[0044] In a specific embodiment, the main ventilation duct 6 is connected to the outlet of the centrifugal fan 4 via the fan flexible duct 5. The main generator ventilation duct 9 and the traction motor ventilation duct 7 are connected in parallel and then connected to the main ventilation duct 6. The main generator 13 is connected to the main generator ventilation duct 9 via the main generator flexible duct 11. There are multiple traction motors 14, which are arranged in parallel. Each traction motor 14 is connected to a corresponding rigid ventilation duct via the traction motor flexible duct 8. The multiple rigid ventilation ducts are connected in parallel and then connected to the traction motor ventilation duct 7.

[0045] In a specific embodiment, combined with Figure 1 and Figure 4 The air regulating valve 10 is installed on the main generator ventilation duct 9 and adopts a louvered structure. The opening degree of the air regulating valve 10 is controlled by the heat dissipation device controller 1 according to the operating conditions. When the rail vehicle is in electric mode, since the main generator 13 is not working, the air regulating valve 10 can be adjusted through the control logic set by the heat dissipation device controller 1 to control the ventilation volume entering the main generator 13 and intelligently distribute the ventilation volume between the traction motor 14 and the main generator 13. Specifically:

[0046] When power is supplied through the overhead contact line, the air regulating valve 10 is completely closed, the main generator 13 does not supply air, and all air is supplied to the traction motor 14;

[0047] When power is supplied through the diesel engine 12, the air regulating valve 10 is fully opened, simultaneously supplying air to the main generator 13 and the traction motor 14.

[0048] In a specific embodiment, combined with Figure 4 and Figure 5The high-pressure cleaning system 16 is installed on the air outlet side of the water radiator 3. The high-pressure cleaning system 16 includes a high-pressure cleaning pump 1602, a liquid storage tank 1601, a liquid pipeline 1603, a gas pipeline 1605, a medium switching valve 1604, a cleaning pipeline network 1606, and cleaning nozzles 1607 installed on the cleaning pipeline network 1606. The liquid pipeline 1603 and the gas pipeline 1605 are connected in parallel and then connected to the cleaning pipeline through the medium switching valve 1604. The high-pressure cleaning pump 1602 is installed on the liquid pipeline 1603. The gas pipeline 1605 is connected to the high-pressure air cylinder on the vehicle. The high-pressure gas enters the medium switching valve 1604 through the gas pipeline 1605, enters the cleaning pipeline according to the control logic of the radiator controller 1, and then enters the cleaning nozzles 1607. The high-pressure air is used to blow dust off the water radiator core 304 in reverse.

[0049] Combination Figure 5 and Figure 6 A liquid storage tank 1601 is installed on the side wall of the dual-power rail vehicle body. The liquid storage tank 1601 contains a clean liquid. Under the action of the high-pressure cleaning pump 1602, the liquid inside the liquid storage tank 1601 enters the cleaning pipeline through the liquid pipeline 1603 according to the control logic of the heat dissipation device controller 1, and then enters the cleaning nozzle 1607 to perform reverse high-pressure cleaning of the water radiator core 304. The cleaning liquid after cleaning is discharged outside the vehicle through the air side channel of the water radiator core 304. By adjusting the medium switching valve 1604, high-pressure air cleaning or high-pressure cleaning liquid cleaning can be used to reduce or remove dust and debris adhering to the air intake surface of the water radiator 3 and the heat dissipation fins of the core. This can restore the ventilation volume required for the heat dissipation of the traction motor 14 and the main generator 13, as well as the heat dissipation capacity of the water radiator 3, ensuring the normal operation of the traction motor 14, the main generator 13, and the traction converter.

[0050] Combination Figure 5 and Figure 7When the ventilation and heat dissipation device is working, dust and debris will continuously accumulate on the air intake surface and core heat dissipation fins of the water radiator 3, causing varying degrees of blockage in the air intake area of ​​the water radiator 3. The more severe the blockage, the higher the pressure difference between the inlet and outlet of the water radiator 3, the smaller the ventilation volume, and the greater the decrease in the heat dissipation capacity of the water radiator 3, traction motor 14, and main generator 13. In order to detect the degree of blockage in the water radiator 3, a differential pressure sensor 301-1 is installed on the water radiator 3. The differential pressure sensor 301-1 is a sensor used to measure the pressure difference between the inlet and outlet of the water radiator 3. It can measure the air pressure difference between the inlet and outlet of the water radiator 3. The heat dissipation device controller 1 reads the variable flow water temperature signal through the CAN bus and directly acquires the differential pressure signal from the differential pressure sensor 301-1 to control the medium switching valve 1604 and the centrifugal fan 4. When the differential pressure sensor 301-1 reaches the set value... When the pressure difference P1 is less than the set value and the variable flow water temperature is less than the set value, the centrifugal fan 4 operates in reverse under the control of the heat dissipation device controller 1 to perform reverse air blowing dust removal on the water radiator core 304; when the pressure difference sensor 301-1 reaches the set pressure difference P2 and the variable flow water temperature is less than the set value, high-pressure gas enters the cleaning pipeline through the medium conversion valve 1604 and is sprayed out through the cleaning nozzle 1607 to perform reverse high-pressure air dust removal on the water radiator core 304; when the pressure difference sensor 301-1 reaches the set pressure difference P1 or P2 and the variable flow water temperature remains above the set value, it proves that the first two cleaning methods have failed to meet the requirements and may seriously affect the normal operation of the converter. At this time, the high-pressure cleaning pump 1602 is used to send high-pressure liquid into the cleaning pipeline through the medium conversion valve 1604 and spray it out through the cleaning nozzle 1607 to perform high-pressure liquid cleaning on the water radiator core 304.

[0051] In a specific embodiment, the medium switching valve 1604 is an integrated component consisting of two solenoid valves and one three-way valve seat.

[0052] In a specific embodiment, see Figure 8 The cleaning nozzle 1607 adopts a structure with multiple small holes, and the cleaning nozzle 1607 is directly facing the surface of the water radiator core.

[0053] In this embodiment, the variable flow water temperature setpoint is based on the vehicle manufacturer's requirements for the inverter's inlet water temperature. Generally, the inlet water temperature requirement for vehicle inverters is no greater than 58℃, and the setpoint usually has a margin, such as a setpoint of 53℃. This value can be adjusted on-site on the controller according to the operating conditions. The pressure difference P1 and pressure difference P2 setpoints are based on the fan's rated speed, and the pressure difference corresponds to the reduction in fan flow rate. For example, P1 corresponds to 95% of the rated air volume, and P2 corresponds to 90% of the rated air volume. This value can be adjusted according to the severity of the vehicle's operating environment.

[0054] In a specific embodiment, the heat dissipation device controller 1 can also directly read the vehicle's mileage via the CAN bus to control the medium switching valve 1604. For example, when the vehicle has traveled 30,000 kilometers, the centrifugal fan 4 reverses to blow air through the water radiator core 304 to remove dust; when the vehicle has traveled 100,000 kilometers, high-pressure air is used to blow air through the water radiator core 304 to remove dust; when the vehicle has traveled 200,000 kilometers, the high-pressure cleaning pump 1602 starts to clean the water radiator core 304 with high-pressure cleaning fluid. Automatic cleaning of the water radiator core 304 based on either vehicle mileage or the air pressure difference between the radiator's inlet and outlet can promptly restore the ventilation required for cooling the traction motor 14 and main generator 13, as well as the cooling capacity of the water radiator 3, effectively reducing labor intensity and avoiding the impact of unreasonable over-cleaning of the water radiator 3 on its service life.

[0055] In a specific embodiment, combined with Figure 4 , Figure 9 and Figure 10 The composite filter 2 includes a mesh filter 201 and a combination filter 202. The mesh filter 201 is installed in front of the combination filter 202. The combination filter 202 adopts a corrugated and semi-circular tube dust and water filtration structure in an alternating combination and is installed behind the mesh filter 201. Cooling air is filtered sequentially by the mesh filter 201 and the combination filter 202 under the drive of the centrifugal fan 4. When the cooling air passes through the mesh filter 201 under the drive of the centrifugal fan 4, it can prevent large particles such as leaves from entering. After passing through the combination filter 202, most of the dust and water vapor in the air can be filtered.

[0056] The implementation principle of this application is as follows: the distributed cooling systems such as the liquid cooling system of the traction converter, the ventilation and cooling system of the traction motor 14, and the ventilation and cooling system of the main generator 13 used in existing rail vehicles are highly integrated, and intelligent control and cleaning functions are added. The technology of automatic distribution of air volume according to operating conditions and intelligent cleaning is implemented. The structure is compact, reducing the weight, space size and noise of the ventilation and heat dissipation device, reducing auxiliary power consumption, and reducing cleaning labor intensity. It avoids the impact of unreasonable over-cleaning of the water radiator 3 on the service life of the radiator, and meets the requirements of miniaturization, lightweighting, energy saving and environmental protection of components for dual-power rail vehicles.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles, characterized in that, The system includes a centrifugal fan (4), a water radiator (3), a main ventilation duct (6), a main generator ventilation duct (9), a traction motor ventilation duct (7), a composite filter (2), a high-pressure cleaning system (16), and a heat dissipation device controller (1). The main generator ventilation duct (9) and the traction motor ventilation duct (7) are connected in parallel and then connected to the air outlet of the centrifugal fan (4) through the main ventilation duct (6). Cooling air is filtered by the composite filter (2) under the drive of the centrifugal fan (4) and then enters the water radiator (3). A differential pressure sensor (301-1) is installed on the air outlet of the water radiator (3), and a variable flow water temperature sensor is installed on the water outlet pipe of the water radiator (3). The heat dissipation device controller (1) can directly collect the signal of the differential pressure sensor (301-1) and read the signal of the variable flow water temperature sensor from the vehicle control system through the CAN bus. The high-pressure cleaning system (16) includes a high-pressure cleaning pump (1602), a liquid storage tank (1601), a liquid pipeline (1603), a gas pipeline (1605), a medium switching valve (1604), a cleaning pipeline network (1606), and cleaning nozzles (1607) installed on the cleaning pipeline network (1606). The cleaning pipeline network (1606) is installed on the air outlet cavity of the water radiator (3), and the spray area of ​​the cleaning nozzles (1607) covers the surface of the water radiator core (304); the liquid pipeline (1603) After being connected in parallel with the gas pipeline (1605), it is connected to the cleaning pipeline through the medium switching valve (1604). A high-pressure cleaning pump (1602) is installed on the liquid pipeline (1603). The gas pipeline (1605) is connected to the high-pressure air cylinder on the vehicle. The high-pressure gas enters the medium switching valve (1604) through the gas pipeline (1605), enters the cleaning pipeline according to the control logic of the radiator controller (1), and then enters the cleaning nozzle (1607). High-pressure air is used to blow the water radiator core (304) in reverse to remove dust. When the differential pressure sensor (301-1) reaches the set differential pressure P1 and the variable flow water temperature does not exceed the set value, the centrifugal fan (4) runs in reverse under the control of the heat dissipation device controller (1) to blow air and remove dust from the water radiator core (304). At this time, the high pressure cleaning system (16) is turned off. When the differential pressure sensor (301-1) reaches the set differential pressure P2, P2 is greater than P1, and the variable flow water temperature does not exceed the set value, high pressure gas enters the cleaning pipeline through the medium switching valve (1604) and is sprayed out through the cleaning nozzle (1607) to remove dust from the water radiator core (304) with the high pressure gas. When the differential pressure sensor (301-1) reaches the set differential pressure P1 or P2, and the variable flow water temperature is greater than the set value, the high-pressure cleaning pump (1602) will send high-pressure liquid into the cleaning pipeline through the medium switching valve (1604) and spray it out through the cleaning nozzle (1607) to perform high-pressure liquid cleaning on the water radiator core (304).

2. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, An air regulating valve (10) is installed on the main generator ventilation duct (9). The opening of the air regulating valve (10) is controlled by the heat dissipation device controller (1) to control the ventilation volume entering the main generator ventilation duct (9) and the ventilation volume entering the traction motor ventilation duct (7). When power is supplied through the overhead contact line, the air regulating valve (10) is completely closed, the main generator (13) does not supply air, and all air is supplied to the traction motor (14); When powered by the diesel engine (12), the air regulating valve (10) is fully opened, simultaneously supplying air to the main generator (13) and the traction motor (14).

3. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The composite filter (2) includes a mesh filter (201) and a combination filter (202). Cooling air is filtered sequentially by the mesh filter (201) and the combination filter (202) under the drive of the centrifugal fan (4). The combination filter (202) adopts a corrugated and semi-circular tube alternating combination structure.

4. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The cleaning pipeline network (1606) is a mesh structure composed of pipelines; the cleaning nozzle (1607) has a multi-hole arrangement structure.

5. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The water radiator (3) adopts an aluminum plate-fin structure. A sealing groove is provided on the mounting flange of the water radiator (3), and a rubber sealing strip (17) is installed in the sealing groove. A clip-type sealing strip (18) is installed on the air outlet cavity of the water radiator (3). The centrifugal fan (4) is sealed to the air outlet cavity of the water radiator (3) through the clip-type sealing strip (18). The water inlet and outlet flanges (303) of the water radiator are connected to the inlet and outlet of the traction converter through pipelines respectively.

6. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The centrifugal fan (4) includes a collector (402), a centrifugal impeller (403), a volute (404), a motor (405), and a fan mounting base (401). The centrifugal fan (4) is mounted on the frame via the fan mounting base (401), and the rotational speed of the centrifugal fan (4) is controlled by the heat dissipation device controller (1).

7. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The heat dissipation device controller (1) collects temperature signals from the variable flow water, main generator (13), and traction motor (14) via the CAN bus, and controls the speed of the centrifugal fan (4).

8. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, There are multiple traction motors (14), and the multiple traction motors (14) are arranged in parallel.

9. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, The main ventilation duct (6) is connected to the outlet of the centrifugal fan (4) through the fan flexible duct (5); the main generator (13) and the traction motor (14) are connected to the main generator ventilation duct (9) and the traction motor ventilation duct (7) through the main generator flexible duct (11) and the traction motor flexible duct (8), respectively.

10. The intelligent cleaning, ventilation, and heat dissipation device for dual-powered rail vehicles according to claim 1, characterized in that, An installation opening is provided on the side wall of the dual-powered rail vehicle body, and the water radiator (3) is installed in the installation opening.

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