阅读说明：本技术 一种胶轮导轨电车永磁电机冷却装置 (Permanent magnet motor cooling device for rubber-tyred trolley bus ) 是由 贾红洋 王硕 蔡欢 闫春霆 袁磊 于 2019-11-01 设计创作，主要内容包括：本发明实施例公开了一种胶轮导轨电车永磁电机冷却装置,所述冷却装置包括箱体框架,该箱体框架内设置有制动电阻,所述箱体框架内还包括第一风冷环路结构、第二风冷环路结构和液冷环路结构；所述第一风冷环路结构与第二风冷环路结构呈轴对称布置于所述箱体框架内,用于分别吸入来自所述箱体框架两侧低温空气,使得所述低温空气与所述液冷环路结构的高温冷却液完成对流换热继续对制动电阻进行空气冷却后排出；所述液冷环路结构与所述永磁电机的进/出液口相连通,用于将冷却后的冷却液流向永磁电机内部对其进行液冷换热并排出高温冷却液。本发明采用整体配套设计和系统集成设计方法,达到了利用同一个冷却装置同时对永磁电机液冷和制动电阻风冷的目的。(The embodiment of the invention discloses a rubber-tyred guide-rail electric car permanent magnet motor cooling device, which comprises a box body frame, wherein a brake resistor is arranged in the box body frame; the first air-cooled loop structure and the second air-cooled loop structure are arranged in the box body frame in an axial symmetry manner and are used for respectively sucking low-temperature air from two sides of the box body frame, so that the low-temperature air and high-temperature cooling liquid of the liquid-cooled loop structure complete heat convection and exchange, continue to carry out air cooling on the brake resistor and then are discharged; and the liquid cooling loop structure is communicated with the liquid inlet/outlet of the permanent magnet motor and is used for flowing the cooled coolant into the permanent magnet motor to carry out liquid cooling heat exchange on the permanent magnet motor and discharging high-temperature coolant. The invention adopts an integral matching design and a system integration design method, and achieves the purpose of simultaneously cooling the liquid of the permanent magnet motor and cooling the brake resistor by using the same cooling device.)

1. The utility model provides a rubber tyer guide rail trolley-bus permanent magnet machine cooling device, cooling device includes the box frame, is provided with the braking resistance in this box frame, its characterized in that still includes in the box frame: the first air-cooled loop structure, the second air-cooled loop structure and the liquid-cooled loop structure; the first air-cooled loop structure and the second air-cooled loop structure are arranged in the box body frame in an axial symmetry manner and are used for respectively sucking low-temperature air from two sides of the box body frame, so that the low-temperature air and high-temperature cooling liquid of the liquid-cooled loop structure complete a convection heat exchange process, and the air after heat exchange is discharged after air cooling is continuously carried out on a brake resistor; and the liquid cooling loop structure is communicated with the liquid inlet/outlet of the permanent magnet motor and is used for flowing the cooled coolant into the permanent magnet motor to carry out liquid cooling heat exchange on the permanent magnet motor and discharging high-temperature coolant.

2. The rubber-tyred tram permanent magnet motor cooling apparatus of claim 1 further comprising an air outlet filter within said box frame and said first air-cooling loop structure comprises a first air inlet filter, a first radiator, a first fan, wherein said first air inlet filter is disposed on an end plate on either side of said box frame for filtering low temperature air from outside said box frame; the air side of the first heat sink is disposed opposite the first air inlet filter, and the liquid side of the heat sink is in communication with the liquid cooling loop structure; the first fan is arranged opposite to the air side of the first radiator and used for blowing air which completes the convection heat exchange process to the brake resistor; the second air-cooling loop structure comprises a second air inlet filter, a second radiator and a second fan, wherein the second air inlet filter is arranged on the end plate on the other side of the box body frame and is used for filtering low-temperature air from the outside of the box body frame; the air side of the second radiator is arranged opposite to the second air inlet filter, and the liquid side of the radiator is communicated with the liquid cooling loop structure; the second fan is arranged opposite to the air side of the second radiator and used for blowing air which completes the convection heat exchange process to the brake resistor.

3. The cooling device for the permanent magnet motor of the rubber-tyred trolley according to claim 2, wherein the first air-cooled loop structure and the second air-cooled loop structure further comprise a fan guard plate disposed around the first fan/the second fan; an air guide plate is arranged at the bottom of the box body frame and used for being matched with the fan guard plate to guide air which completes the heat convection process to flow through the radiating fins of the brake resistor and be discharged from the air outlet filter.

4. The cooling device for the permanent magnet motor of the rubber-tyred tram according to claim 3, wherein the air deflector comprises a deflector bend plate, two auxiliary deflectors oppositely disposed on the deflector bend plate, and two mounting plates for fixing the deflector bend plate to the bottom of the tank frame.

5. The cooling device for the permanent magnet motor of the rubber-tyred tram according to claim 4, wherein the bending angle of the air-guiding bent plate is an obtuse angle.

6. The cooling apparatus for permanent magnet motor of rubber-tyred tram according to claim 1, wherein the liquid cooling loop structure comprises:

the conveying pipeline is respectively communicated with a liquid inlet/outlet of the permanent magnet motor, the liquid side of the first radiator and the liquid side of the second radiator;

a water pump in communication with a liquid side of the first radiator and a liquid side of the second radiator, respectively;

and an expansion tank communicating with the liquid side of the first radiator or the liquid side of the second radiator and a water pump.

7. The cooling device for the permanent magnet motor of the rubber-tyred tram according to claim 6, wherein a float level switch is connected to the expansion tank.

8. The cooling device for the permanent magnet motor of the rubber-tyred trolley motor according to claim 6, wherein a pressure transmitter is disposed on a pipeline through which the water pump communicates with the liquid side of the first radiator or the liquid side of the second radiator.

9. The cooling apparatus for a permanent magnet motor of a rubber-tyred electric car according to claim 6, wherein a temperature sensor is disposed on both the liquid side of the first radiator and the liquid side of the second radiator.

Technical Field

The invention relates to the technical field of heat exchange, in particular to a cooling device for a permanent magnet motor of a rubber-tyred trolley car.

Background

At present, in the existing guide rail electric car cooling technology, two independent cooling devices are generally configured for heat dissipation of two key components, namely a permanent magnet motor and a brake resistor, the structure is not compact, the occupied total volume of a locomotive space is large, the total weight is heavy, and the total auxiliary power consumption is high. Therefore, it is necessary to provide a cooling device with high integration to solve the above problems.

Disclosure of Invention

Based on this, in order to solve the not enough that exists at prior art, specially proposed a rubber tyer trolley-bus permanent-magnet machine cooling device.

The utility model provides a rubber tyer guide rail trolley-bus permanent magnet machine cooling device, cooling device includes the box frame, is provided with the braking resistance in this box frame, its characterized in that still includes in the box frame: the first air-cooled loop structure, the second air-cooled loop structure and the liquid-cooled loop structure; the first air-cooled loop structure and the second air-cooled loop structure are arranged in the box body frame in an axial symmetry manner and are used for respectively sucking low-temperature air from two sides of the box body frame, so that the low-temperature air and high-temperature cooling liquid of the liquid-cooled loop structure complete a convection heat exchange process, and the air after heat exchange is discharged after air cooling is continuously carried out on a brake resistor; and the liquid cooling loop structure is communicated with the liquid inlet/outlet of the permanent magnet motor and is used for flowing the cooled coolant into the permanent magnet motor to carry out liquid cooling heat exchange on the permanent magnet motor and discharging high-temperature coolant.

Optionally, in one embodiment, an air outlet filter is further included in the box frame, and the first air-cooling loop structure includes a first air inlet filter, a first radiator and a first fan, wherein the first air inlet filter is disposed on an end plate on either side of the box frame and is used for filtering low-temperature air from outside the box frame; the air side of the first heat sink is disposed opposite the first air inlet filter, and the liquid side of the heat sink is in communication with the liquid cooling loop structure; the first fan is arranged opposite to the air side of the first radiator and used for blowing air which completes the convection heat exchange process to the brake resistor; the second air-cooling loop structure comprises a second air inlet filter, a second radiator and a second fan, wherein the second air inlet filter is arranged on the end plate on the other side of the box body frame and is used for filtering low-temperature air from the outside of the box body frame; the air side of the second radiator is arranged opposite to the second air inlet filter, and the liquid side of the radiator is communicated with the liquid cooling loop structure; the second fan is arranged opposite to the air side of the second radiator and used for blowing air which completes the convection heat exchange process to the brake resistor.

Optionally, in one embodiment, the first air-cooled loop structure and the second air-cooled loop structure further include a fan guard plate disposed at the periphery of the first fan/the second fan; and an air guide plate is arranged at the bottom of the box body frame and is used for being matched with the fan guard plate to guide the air which finishes the heat convection process to flow through the radiating fins of the brake resistor and be discharged from the air outlet filter.

Optionally, in one embodiment, the air deflector includes a diversion bent plate, two auxiliary deflectors arranged opposite to the diversion bent plate, and two mounting plates for fixing the diversion bent plate to the bottom of the box frame.

Optionally, in one embodiment, the bending angle of the diversion bending plate is an obtuse angle.

Optionally, in one embodiment, the liquid cooling loop structure includes:

the conveying pipeline is respectively communicated with a liquid inlet/outlet of the permanent magnet motor, the liquid side of the first radiator and the liquid side of the second radiator;

a water pump in communication with a liquid side of the first radiator and a liquid side of the second radiator, respectively;

and an expansion tank communicating with the liquid side of the first radiator or the liquid side of the second radiator and a water pump.

Optionally, in one embodiment, a float level switch is connected to the expansion tank.

Optionally, in one embodiment, a pressure transmitter is disposed on a pipeline of the water pump, which is communicated with the liquid side of the first radiator or the liquid side of the second radiator.

Optionally, in one embodiment, a liquid side of the first heat sink and a liquid side of the second heat sink are both provided with temperature sensors.

The embodiment of the invention has the following beneficial effects:

the invention adopts an integral matching design method to improve the cooling structure, namely, one heat exchange module is used for simultaneously carrying out forced ventilation cooling on the cooling liquid of the permanent magnet motor and the brake resistor, thereby achieving the advantages of small volume, light weight, compact structure, high integration level, low noise, low auxiliary power consumption and the like on the premise of meeting the cooling requirements of the permanent magnet motor and the brake resistor. Therefore, the invention provides a new technology for the cooling system of the rail transit mobile equipment, and can be widely popularized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a schematic diagram of the operation of the cooling device according to one embodiment;

FIG. 2 is a schematic view of the cooling device according to an embodiment;

FIG. 3 is a schematic view of the air deflector arrangement in one embodiment;

FIG. 4 is a side view of a corresponding structure of the air deflector in one embodiment;

in the figure: 1-1, a first air inlet filter, 1-2, a second air inlet filter, 2, a conveying pipeline, 3, a first radiator, 4, a temperature sensor, 5, an expansion water tank, 6, a first fan, 7, a fan guard plate, 8, an air outlet filter, 9, a brake resistor, 10, a second fan, 11, a second radiator, 12, a permanent magnet motor, 13, an air guide plate, 13-1, a mounting plate, 13-2, an auxiliary guide plate, 13-3, a guide bending plate, 14, a water pump, 15, a pressure transmitter, 16, a floating ball liquid level switch, 17, a box frame, 18, an electric connector, 19 and a cable.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first and second elements are both elements, but they are not the same element.

In order to meet the requirement of weight reduction of a locomotive, overcome the defects in the prior art, and provide a cooling device with high integration level, strong heat dissipation capability, light weight, small volume and low auxiliary power consumption for railway transportation, in this embodiment, a cooling device for a permanent magnet motor of a rubber-tyred trolley car is especially provided, as shown in fig. 1 to 4, the cooling device includes a box frame 17, a brake resistor 9 is arranged in the box frame 17, and the cooling device is characterized in that the box frame 17 further includes: the first air-cooled loop structure, the second air-cooled loop structure and the liquid-cooled loop structure; the first air-cooled loop structure and the second air-cooled loop structure are arranged in the box body frame 17 in an axial symmetry manner and are used for respectively sucking low-temperature air from the outside of two sides of the box body frame 17, so that the low-temperature air and high-temperature cooling liquid of the liquid-cooled loop structure complete a convective heat transfer process, and the heat transfer air which completes the convective heat transfer process can continue to carry out air cooling on the brake resistor and is discharged; and the liquid cooling loop structure is communicated with the liquid inlet/outlet of the permanent magnet motor and is used for flowing the cooled coolant into the permanent magnet motor to carry out liquid cooling heat exchange on the permanent magnet motor and discharging high-temperature coolant. In the above scheme, the air loop part is axisymmetric, so that air horizontally enters from two sides, and then is vertically discharged from the top of the middle of the box frame 17, namely, the liquid cooling scheme of the permanent magnet motor and the air cooling scheme of the brake resistor are integrally designed into a cooling structure which can simultaneously complete liquid cooling and air cooling heat exchange treatment by configuring the first air cooling loop structure, the second air cooling loop structure and the liquid cooling loop structure in the box frame, so that the liquid cooling heat exchange and the air cooling heat exchange treatment of the brake resistor are simultaneously carried out on the permanent magnet motor. When the cooling device works, low-temperature air of the air loop part and high-temperature cooling liquid of the cooling liquid loop structure respectively complete a convection heat exchange process in the first radiator 3 and the second radiator 11, the low-temperature air continues to carry out air cooling on the cooling fins of the brake resistor 9 after absorbing the heat of the cooling liquid, and then the high-temperature air is finally discharged from the air outlet filter 8 of the car roof; meanwhile, the cooled coolant flows into the permanent magnet motor 12 to cool the permanent magnet motor, so that the purpose that the permanent magnet motor 12 and the brake resistor 9 are cooled by one set of cooling device is achieved.

In some specific embodiments, the box frame is further arranged with an air outlet filter 8 for filtering and preventing foreign matters outside the box frame from entering the brake resistor, and the first air-cooling loop structure comprises a first air inlet filter 1-1, a first radiator 3 and a first fan 6, wherein the first air inlet filter 1-1 is arranged on an end plate on either side of the box frame 17 and is used for filtering low-temperature air from outside the box frame; the air side of the first radiator 3 is arranged opposite to the first air inlet filter 1-1, and the liquid side of the radiator is communicated with the liquid cooling loop structure; the first fan 6 is arranged opposite to the air side of the first radiator 3, and is used for sucking low-temperature air from the outside and blowing the air which completes the heat convection process to the brake resistor; the second air-cooling loop structure comprises a second air inlet filter 1-2, a second radiator 11 and a second fan 10, wherein the second air inlet filter 1-2 is arranged on the end plate at the other side of the box frame 17 and is used for filtering low-temperature air from the outside of the box frame; the air side of the second radiator 11 is arranged opposite to the second air inlet filter 1-2, and the liquid side of the radiator is communicated with the liquid cooling loop structure; the second fan 10 with the air side of second radiator 11 is arranged relatively, and it is used for with low temperature air from outside suction and accomplish the air of convection heat transfer process blow to brake resistor, just first air-cooled loop structure including arrange in first fan outlying fan backplate the second air-cooled loop structure also including arrange in second fan outlying fan backplate 7, it is fixed with first fan/second fan 10 through the erection support, fan backplate 7 is used for with the air guide plate 13 cooperation guide accomplish the air of convection heat transfer process blow to brake resistor 9. The relative arrangement refers to the arrangement that the two are adjacent and in one-to-one correspondence.

In some specific embodiments, an air deflector 13 is disposed at the bottom of the box frame 17, and the air deflector 13 is used for guiding the air which completes the heat convection process to flow through the heat sink of the brake resistor and be discharged from the air outlet filter by cooperating with the fan guard 7 with the air deflector 13.

In some specific embodiments, the air deflector 13 includes a diversion bending plate 13-3 disposed below the braking resistor, two auxiliary deflectors 13-2 disposed opposite to the diversion bending plate, and two mounting plates 13-1 for fixing the diversion bending plate to the bottom of the box frame 17, where the diversion bending plate is a bending plate, and the bending angle is generally an obtuse angle. The air which completes the convection heat exchange process is guided by the flow guide bending plate to flow through the radiating fins of the brake resistor and upwards exhausted from the air outlet filter.

In some specific embodiments, the liquid cooling loop structure includes: a conveying pipeline 2, wherein the conveying pipeline 2 is respectively communicated with a liquid inlet/outlet of the permanent magnet motor, a liquid side of the first radiator and a liquid side of the second radiator; a water pump 14, the water pump 14 being in communication with the liquid side of the first radiator and the liquid side of the second radiator 11, respectively; and an expansion tank 5, the expansion tank 5 communicating with the liquid side of the first radiator or the liquid side of the second radiator 11 and a water pump. In a more specific embodiment, a float level switch 16 is connected to the expansion tank, and the float level switch 16 is arranged on the expansion tank and used for monitoring the liquid level of the expansion tank, monitoring the water level of the tank in real time, monitoring the drop of the water level if problems such as liquid leakage exist, and alarming when the water level exceeds a limit.

In some specific embodiments, the water pump 14 and the expansion tank 5 are disposed between the first radiator and the first fan; a pressure transmitter 15 is arranged on a pipeline of the water pump 14 communicated with the liquid side of the first radiator or the liquid side of the second radiator 11, and the pressure transmitter 15 is arranged on a liquid outlet pipe of the water pump to monitor the pumping performance of the water pump; the pressure transmitter 15 can amplify the weak electrical signals collected by the pressure sensor for relaying or activating the control element, or convert the non-electrical input from the sensor into electrical signals and simultaneously amplify the electrical signals for providing a signal source for remote measurement and control. The purpose of arranging the pressure transmitter 15 in this embodiment is to ensure that when gas exists in the liquid cooling loop structure, the flow rate is insufficient or the pressure is insufficient, such as blockage and overproof pressure, the liquid cooling loop is judged whether to normally run according to the pressure and an alarm module can be further configured to monitor the working state of the liquid cooling loop according to the requirement.

In some specific embodiments, the liquid side of the first heat sink and the liquid side of the second heat sink 11 are both configured with temperature sensors 4, specifically, the temperature sensors 4 may also be respectively disposed at the liquid outlet of the first heat sink, the liquid inlet of the second heat sink 11, and the air inlet of the braking resistor, so as to monitor the cooling performance of the cooling device; the temperature sensor 4 is provided for the following purpose: 1. monitoring and judging the performance of the cooling system, 2, monitoring and protecting cooled objects such as a brake resistor and a motor, and if the cooled objects exceed the normal working temperature, judging that a fault exists and giving an alarm; 3. the fan speed control system can also be configured with a temperature speed control mechanism, namely, the temperature speed control mechanism adjusts the fan speed in real time based on the preset speed control relationship between the device temperature and the fan speed, if the temperature is lower than a low-temperature threshold value, the fan can be in a low-speed state, if the temperature is higher than a high-temperature threshold value, the fan can be in a high-speed state, and the specific adjustment can be realized by switching between high speed and low speed or controlling and adjusting the speed through frequency conversion.

In some specific embodiments, the braking resistor 9 is isolated from the box frame 17 by an insulator, so as to ensure the insulating property between the braking resistor 9 and the cooling device box frame 17.

In some specific embodiments, the first fan and the second fan, and the cable 19 of the water pump 14 are connected to a power supply system of the entire vehicle through the electrical connector 18, and the signal lines of the temperature sensor 4, the pressure transmitter 15, and the float level switch 16 are also connected to the entire vehicle through the electrical connector 18, so as to facilitate disassembly, assembly, and maintenance.

The braking resistor 9 is arranged between the two fans 6 and 10 on the box body frame 17, and an air outlet filter 8 is arranged above the braking resistor 9; the cables 19 and the water pipes 2 are respectively provided on the front and rear sides of the cabinet frame 17.

The embodiment of the invention has the following beneficial effects:

after the technical scheme is adopted, the invention has the advantages of small volume, light weight, compact structure, high integration level, low noise, low auxiliary power consumption and the like. The invention provides a new technology for the cooling system of the rail transit mobile equipment, and can be completely and widely popularized.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.