CN110380595B - Combined air cooling device for subway traction converter - Google Patents
Combined air cooling device for subway traction converter Download PDFInfo
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- CN110380595B CN110380595B CN201910514647.9A CN201910514647A CN110380595B CN 110380595 B CN110380595 B CN 110380595B CN 201910514647 A CN201910514647 A CN 201910514647A CN 110380595 B CN110380595 B CN 110380595B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Inverter Devices (AREA)
- Transformer Cooling (AREA)
Abstract
The invention belongs to the technical field of rail transit, and relates to a combined air cooling device for a subway traction converter, which comprises an air inlet assembly and an air outlet assembly which are separable, wherein the air inlet assembly and the air outlet assembly are connected through an air duct connecting part; the air inlet assembly comprises a radiator and an air inlet duct cover plate, and the radiator is detachably connected with the air inlet duct cover plate; the air outlet assembly comprises a speed-adjustable cooling fan assembly, a fan frame assembly and a fan cover plate, the speed-adjustable cooling fan assembly is installed in the fan frame assembly, and the fan cover plate is detachably connected with the fan frame assembly. This combination formula air cooling device through designing the wind channel, utilizes adjustable speed cooling blower cooperation radiator to carry out the cold wind heat dissipation of forcing, realizes the cooling of converter, has solved and has pull the converter and can't last radiating problem under the condition of not having the wind of walking. And the volume of the combined air cooling device is obviously reduced, the installation space of the cooling device of the subway converter cabinet can be saved, and the miniaturization design trend of the converter is met.
Description
Technical Field
The invention belongs to the technical field of rail transit, relates to a combined air cooling device, and particularly relates to a combined air cooling device for a subway traction converter.
Background
The traction converter is a core component of a rail transit vehicle, and the electric elements of the traction converter generate heat loss during operation, so that the temperature of the electric elements is increased. If the temperature exceeds the limit that the element can bear, the danger such as insulating failure, fire can be produced to electrical element, so must adopt the heat that suitable cooling system produced when working is taken away to the converter, just can guarantee the converter and normally work like this to guarantee vehicle safe operation.
In recent years, rail transit equipment tends to be light and small, and a traction converter is used as a core component of a traction system of a subway vehicle, and the design requirements of light weight and small size are increased day by day. Along with the system requirement of improving the power density of the subway converter, the electrical and structural design of the whole machine needs to meet the requirement of the existing assembly design trend. The existing subway traction converter generally adopts a finned radiator with heat pipes, a heating power device is arranged on a radiator substrate, when the converter works, heat generated by the power device is transferred to fins of the radiator, and the heat is taken away by utilizing running wind generated when a subway vehicle runs.
However, the following problems still exist in the prior art: 1) the heat radiator passively radiating by running wind has low heat flux density, and more heating power devices cannot be arranged on the heat radiator substrate with the same area; 2) the finned radiator device with the heat pipes is large in size, and because the heat is radiated by utilizing traveling wind, in order to ensure the radiating efficiency, the internal radiator needs to be provided with fins and heat pipes with larger size to increase the contact area with the traveling wind, so that the radiator is large in size; 3) when the subway vehicle stops running, the running wind with enough speed cannot be generated, and the heat exchange device cannot effectively dissipate heat; 4) the radiating efficiency of the existing scheme can not be adjusted independently: the heat dissipation efficiency of the existing scheme is influenced by the wind speed of running wind, particularly when a subway vehicle is started and accelerated, the heat generated by the traction converter is large, when the wind speed of the running wind is low, the heat of the traction converter is gathered, and the temperature of a power device is rapidly increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a combined air cooling device for a subway traction converter.
In order to achieve the purpose, the invention provides the following technical scheme:
the combined air cooling device for the subway traction converter comprises an air inlet assembly and an air outlet assembly which can be separated, wherein the air inlet assembly and the air outlet assembly are connected through an air duct connecting part; the air inlet assembly comprises a radiator and an air inlet duct cover plate, and the radiator is detachably connected with the air inlet duct cover plate; the air outlet assembly comprises a speed-adjustable cooling fan assembly, a fan frame assembly and a fan cover plate, the speed-adjustable cooling fan assembly is installed in the fan frame assembly, and the fan cover plate is detachably connected with the fan frame assembly.
Further, the fan frame assembly comprises a trapezoidal air duct body, mounting feet are arranged at two ends of the trapezoidal air duct body, a fan assembly mounting area is arranged above the trapezoidal air duct body, and the speed-adjustable cooling fan assembly is mounted in the fan assembly mounting area.
Further, the air duct connecting portion comprises a first air duct connecting port arranged at the bottom of the trapezoidal air duct body and a second air duct connecting port arranged at the bottom of the air inlet duct cover plate, and the first air duct connecting port and the second air duct connecting port are matched to realize connection of the air inlet assembly and the air outlet assembly and communication and sealing of the whole air duct.
Further, a cavity groove is formed in the trapezoidal air duct body and communicated with the first air duct connecting port, the speed-adjustable cooling fan assembly sucks air from the cavity groove and discharges the air through the air outlet, negative pressure is formed in the cavity groove, and the air is forced to flow through the radiator through the air inlet, so that heat exchange is realized.
Furthermore, one side of the mounting foot is provided with a mounting hole for being fixedly connected with the converter.
Further, fan subassembly installing zone includes a plurality of mutually independent fan subassembly installation department, and a set of adjustable speed cooling fan unit mount is in a fan subassembly installation department, guarantees that each cooling fan subassembly independently works, each other does not influence.
Furthermore, the width of the fan component mounting part can be flexibly adjusted according to the number of the fans and the structure of the converter.
Furthermore, radiator and intake duct apron pass through bolted connection fixed, convenient dismantlement.
Furthermore, the speed-adjustable cooling fan assembly is fixedly arranged in the fan frame assembly through bolts.
Further, the fan cover plate is fixedly connected with the fan frame assembly through bolts.
Furthermore, the radiator is a finned radiator, and the radiating efficiency is improved by increasing the radiating area of the radiating pipe and the running wind.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: through the design that increases separable air inlet subassembly and air-out subassembly, air inlet subassembly and air-out subassembly pass through the wind channel connecting portion and connect, when combination formula air cooling unit uses as a whole, the direct assembly of power device is on the radiator base plate of device, the heat that the power device during operation installed on the radiator base plate produced transmits the fin of radiator through the conduction mode, adjustable speed cooling fan subassembly inhales the air from the cavity inslot of trapezoidal wind channel body and discharges through the air outlet, form the negative pressure in the cavity inslot, force the air to flow through the radiator fin through the air intake, realize the heat exchange, accomplish the cooling to power device.
In addition, the continuity and the sealing of the air channel of the whole air cooling device are realized through a first air channel connecting port arranged at the bottom of the trapezoidal air channel body, a second air channel connecting port arranged at the bottom of the air inlet channel cover plate and a cavity groove arranged in the trapezoidal air channel body; the combined air cooling device is fixedly connected with the converter through the mounting hole by adding the mounting hole at one side of the mounting pin; through setting up a plurality of mutually independent fan unit mount department in fan unit mount area, a set of adjustable speed cooling fan unit mount is in a fan unit mount department, guarantees that each adjustable speed cooling fan subassembly is mutually independent at the during operation, each other does not influence.
Drawings
Fig. 1 is a schematic structural diagram of a combined air cooling device for a subway traction converter provided by the invention;
fig. 2 is an exploded view of the combined air cooling device for the subway traction converter provided by the invention;
fig. 3 is a schematic structural diagram of a fan frame assembly of the combined air cooling device for the subway traction converter provided by the invention;
FIG. 4 is a schematic diagram of the combined air cooling device for the subway traction converter provided by the invention;
fig. 5 is a schematic view of an actual application of the combined air cooling device for the subway traction converter provided in embodiment 2 of the present invention;
fig. 6 is a schematic view of an actual application of the combined air cooling device for a subway traction converter, which is provided by embodiment 3 of the present invention and is split into an air inlet component and an air outlet component.
Wherein: 1. an air intake assembly; 2. an air outlet assembly; 3. a heat sink; 4. an air inlet duct cover plate; 5. a speed adjustable cooling fan assembly; 6. a fan frame assembly; 7. a fan cover plate; 8. a trapezoidal air duct body; 9. mounting a foot; 10. mounting holes; 11. a fan assembly mounting section; 12. a first air duct connecting port; 13. a second air duct connecting port; 14. an air inlet; 15. an air outlet; 16. a heat sink substrate; 17. an IGBT power device; 18. and connecting lines of the IGBT power devices.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
example 1:
referring to fig. 1-3, the invention provides a combined air cooling device for a subway traction converter, which comprises an air inlet component 1 and an air outlet component 2 which are separable, wherein the air inlet component 1 and the air outlet component 2 are connected through an air duct connecting part; the air inlet component 1 comprises a radiator 3 and an air inlet duct cover plate 4, and the radiator 3 is detachably connected with the air inlet duct cover plate 4; the air outlet assembly 2 comprises a speed-adjustable cooling fan assembly 5, a fan frame assembly 6 and a fan cover plate 7, wherein the speed-adjustable cooling fan assembly 5 is installed in the fan frame assembly 6, and the fan cover plate 7 is detachably connected with the fan frame assembly 6.
Further, the fan frame assembly 6 comprises a trapezoidal air duct body 8, mounting feet 9 are arranged at two ends of the trapezoidal air duct body 8, a fan assembly mounting area is arranged above the trapezoidal air duct body 8, and the speed-adjustable cooling fan assembly 5 is mounted in the fan assembly mounting area. The fan frame assembly 6 can support the whole combined air cooling device and realize the connection and fixation of the whole combined air cooling device and the converter; meanwhile, the fan frame assembly 6, the radiator 3 and the fan cover plate 7 can jointly form a sealed air duct to finish heat dissipation of the converter.
Further, the air duct connecting portion comprises a first air duct connecting port 12 arranged at the bottom of the trapezoidal air duct body 8 and a second air duct connecting port 13 arranged at the bottom of the air inlet duct cover plate 4, and the first air duct connecting port 12 and the second air duct connecting port 13 are matched to realize connection of the air inlet component 1 and the air outlet component 2 and communication and sealing of the whole air duct.
Further, a cavity groove is formed in the trapezoidal air duct body 8, the cavity groove is communicated with the first air duct connecting port 12, the speed-adjustable cooling fan assembly 5 sucks air from the cavity groove and discharges the air through the air outlet 15, negative pressure is formed in the cavity groove, and the air is forced to flow through the radiator through the air inlet, so that heat exchange is achieved.
Further, one side of the mounting foot 9 is provided with a mounting hole 10 for fixedly connecting with the converter.
Further, fan subassembly installing zone includes a plurality of mutually independent fan subassembly installation department 11, and a set of adjustable speed cooling fan subassembly 5 is installed in a fan subassembly installation department 11, guarantees that each cooling fan subassembly independently works, each other does not influence.
Further, the width of the fan assembly mounting portion 11 can be flexibly adjusted according to the number of fans and the structure of the converter.
Further, the radiator 3 and the air inlet duct cover plate 4 are fixedly connected through bolts, and installation and disassembly are convenient.
Furthermore, the speed-adjustable cooling fan assembly 5 is fixedly installed in the fan frame assembly 6 through bolts, the fan frame assembly 6 is fixedly connected with the fan cover plate 7 through bolts, the installation and the disassembly are simple, and the fan cover plate 7 is used for guiding air flow discharged by the speed-adjustable cooling fan assembly 5.
Further, the radiator 3 is a finned radiator, and the radiating efficiency is improved by increasing the radiating area of the radiating pipe and the traveling wind.
The working principle of the combined air cooling device is as follows, and is shown in figure 4: the heat generated by the IGBT power device 17 mounted on the heat sink substrate 16 during operation is transferred to the fins of the heat sink 3 by conduction, the speed-adjustable cooling fan assembly 5 sucks air from the cavity groove at the bottom of the trapezoidal air duct body 8 and discharges the air through the air outlet 15, negative pressure is formed in the cavity groove at the bottom of the trapezoidal air duct body 8, and the air is forced to enter the fins of the heat sink 3 through the air inlet 14, so that heat exchange is realized. The speed-adjustable cooling fan assembly 5 is independently powered, has an independent rotating speed control loop and can control the air volume according to instructions, so that the cooling efficiency of the whole air cooling device is adjusted, and uninterrupted cooling is realized.
In summary, the combined air cooling device has the following advantages: firstly, the heat dissipation efficiency of the heat dissipation device of the traction converter is improved: more heating power devices can be arranged on the radiators with the same area, so that the cooling requirement of the subway converter under a high-power level is met, the power density of the converter is improved, and the topological structure circuit design with higher power density can be adapted; secondly, the size of the cooling device of the subway traction converter is reduced; under the same heat dissipation power, the volume of the combined air cooling device provided by the invention is obviously reduced, the installation space of a cooling device of a subway converter cabinet can be saved, and the miniaturization design trend of a converter is met; then, the problem that the traction converter cannot continuously dissipate heat under the condition that no traveling wind exists is solved, the combined forced air cooling device continuously dissipates heat by a cooling fan of the combined forced air cooling device, the heat dissipation efficiency is not affected by the traveling wind, and the heat dissipation quality of the converter is improved; in addition, the heat dissipation efficiency of the heat dissipation device can be automatically adjusted through the speed-adjustable cooling fan assembly 5, the rotating speed of the speed-adjustable cooling fan assembly 5 can be adjusted according to a control instruction of the traction converter, the air volume can be automatically adjusted, and the heat accumulation of the converter can be effectively prevented; finally, this combination formula air cooling device, air inlet subassembly 1 and air-out subassembly 2 detachable dismantlement are used, are changed and are maintained, and the maintainability of device is high.
Example 2:
on the basis of the embodiment 1, the invention also provides a practical application schematic diagram of the combined air cooling device for the subway traction current transformer, and the practical application schematic diagram is shown in fig. 5. This combination formula air cooling device uses IGBT power device 17 as a whole and dispels the heat, and adjustable speed centrifugal fan subassembly is selected for use to adjustable speed cooling fan subassembly 5, and fan frame subassembly 6 comprises two installation feet, a trapezoidal wind channel body 8 and two fan unit mount portions 11, and whole air cooling device's working process is as follows:
the combined air cooling device is assembled into a whole, and an IGBT power device 17 in the converter is directly and fixedly arranged on a radiator substrate 16; the air cooling device is connected to a cabinet body of the traction converter through mounting feet 9 on two sides of the air outlet assembly 2, and heat generated by the IGBT power device 17 when the converter works is conducted to fins of the radiator 3 and exchanges heat with air flowing through the fins to realize cooling. The traction converter is used for independently supplying power to the speed-adjustable centrifugal fan assembly, and the rotating speed of the centrifugal fan is controlled through the signal line. In the operation process of the traction converter, the combined air cooling device continuously dissipates heat, adjusts the rotating speed of the centrifugal fan according to the control instruction of the converter, and adjusts the air volume, so that the cooling efficiency of the whole air cooling device is adjusted, and uninterrupted cooling is realized.
Example 3:
on the basis of the embodiment 1, the invention also provides a practical application schematic diagram of the combined air cooling device for the subway traction converter after the combined air cooling device is split into the air inlet assembly and the air outlet assembly, and the practical application schematic diagram is shown in fig. 6. This combination formula air cooling device split becomes air inlet subassembly 1 and air-out subassembly 2 and uses, and concrete working process is as follows:
the combined air cooling device is divided into an air inlet component 1 and an air outlet component 2, the air inlet component 1, an IGBT power device 17, an IGBT power device connecting wire 18 and other auxiliary devices are assembled into an independent power unit, the independent power unit is directly assembled on a converter, the air outlet component 2 is independently assembled on the converter, and the second air channel connecting port 13 of the air outlet component 2 and the first air channel connecting port 12 of the air inlet component 1 are ensured to be spliced and sealed. The traction converter independently supplies power and controls the rotating speed of the speed-adjustable cooling fan assembly 5, and heat dissipation of the independent power unit is achieved.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (7)
1. The combined air cooling device for the subway traction converter is characterized by comprising an air inlet assembly (1) and an air outlet assembly (2) which are separable, wherein the air inlet assembly (1) and the air outlet assembly (2) are connected through an air duct connecting part; the air inlet assembly (1) comprises a radiator (3) and an air inlet duct cover plate (4), and the radiator (3) is detachably connected with the air inlet duct cover plate (4); the air outlet assembly (2) comprises a speed-adjustable cooling fan assembly (5), a fan frame assembly (6) and a fan cover plate (7), the speed-adjustable cooling fan assembly (5) is arranged in the fan frame assembly (6), and the fan cover plate (7) is detachably connected with the fan frame assembly (6); the fan frame assembly (6) comprises a trapezoidal air duct body (8), mounting feet (9) are arranged at two ends of the trapezoidal air duct body (8), a fan assembly mounting area is arranged above the trapezoidal air duct body (8), and the speed-adjustable cooling fan assembly (5) is mounted in the fan assembly mounting area; the air channel connecting part comprises a first air channel connecting port (12) arranged at the bottom of the trapezoidal air channel body (8) and a second air channel connecting port (13) arranged at the bottom of the air inlet channel cover plate (4), and the first air channel connecting port (12) and the second air channel connecting port (13) are matched to realize the connection of the air inlet component (1) and the air outlet component (2) and the communication of the whole air channel; a cavity groove is formed in the trapezoidal air duct body (8), the cavity groove is communicated with the first air duct connecting port (12), the speed-adjustable cooling fan assembly (5) sucks air from the cavity groove and discharges the air through the air outlet (15), negative pressure is formed in the cavity groove at the bottom of the trapezoidal air duct body (8), and the air is forced to enter fins of the radiator (3) through the air inlet (14), so that heat exchange is achieved.
2. The combined type air cooling device for the subway traction converter as claimed in claim 1, wherein one side of said mounting foot (9) is provided with a mounting hole (10) for fixedly connecting with the converter.
3. The combined type air cooling device for the subway traction converter as claimed in claim 1, wherein said fan assembly mounting area comprises a plurality of mutually independent fan assembly mounting portions (11), and a group of speed-adjustable cooling fan assemblies are mounted in one fan assembly mounting portion (11).
4. The combined type air cooling device for the subway traction converter as claimed in claim 3, wherein the width of said fan assembly mounting portion (11) can be adjusted according to the number of speed-adjustable cooling fans and the structure of the converter.
5. The combined type air cooling device for the subway traction converter as claimed in any one of claims 1-4, wherein said radiator (3) and said air intake duct cover plate (4) are fixed by bolt connection.
6. The combined type air cooling device for the subway traction converter as claimed in any one of claims 1-4, wherein said adjustable speed cooling fan assembly (5) is fixedly mounted in the fan frame assembly (6) by bolts, and said fan frame assembly (6) is fixedly connected with the fan cover plate (7) by bolts.
7. The combined type air cooling device for the subway traction converter as claimed in any one of claims 1-4, wherein said radiator (3) is a finned radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514647.9A CN110380595B (en) | 2019-06-14 | 2019-06-14 | Combined air cooling device for subway traction converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514647.9A CN110380595B (en) | 2019-06-14 | 2019-06-14 | Combined air cooling device for subway traction converter |
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| CN110380595A CN110380595A (en) | 2019-10-25 |
| CN110380595B true CN110380595B (en) | 2021-04-20 |
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| CN201910514647.9A Active CN110380595B (en) | 2019-06-14 | 2019-06-14 | Combined air cooling device for subway traction converter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654997B (en) * | 2020-05-06 | 2022-10-04 | 中车株洲电力机车研究所有限公司 | Air-cooled type heat dissipation system and method for vehicle traveling |
| CN112930080B (en) * | 2021-01-20 | 2022-11-08 | 中车株洲电力机车有限公司 | Rail vehicle cooling system |
| CN114040651B (en) * | 2021-11-15 | 2023-05-16 | 中国电子科技集团公司第二十九研究所 | Active air cooling device capable of adjusting cooling area |
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| CN202142996U (en) * | 2011-07-06 | 2012-02-08 | 阳光电源股份有限公司 | Heat radiating air channel |
| CN204144739U (en) * | 2014-10-21 | 2015-02-04 | 重庆路之生科技有限责任公司 | High-power switchboard cabinet heat radiation system and the dynamic passive compensation system containing this system |
| CN104868750A (en) * | 2015-04-27 | 2015-08-26 | 青岛艾迪森科技有限公司 | Inverter with heat dissipation redundancy function |
| CN108012515A (en) * | 2017-12-30 | 2018-05-08 | 中国船舶重工集团公司第七二三研究所 | A kind of radiator applied to high power travelling wave tube |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202142996U (en) * | 2011-07-06 | 2012-02-08 | 阳光电源股份有限公司 | Heat radiating air channel |
| CN204144739U (en) * | 2014-10-21 | 2015-02-04 | 重庆路之生科技有限责任公司 | High-power switchboard cabinet heat radiation system and the dynamic passive compensation system containing this system |
| CN104868750A (en) * | 2015-04-27 | 2015-08-26 | 青岛艾迪森科技有限公司 | Inverter with heat dissipation redundancy function |
| CN108012515A (en) * | 2017-12-30 | 2018-05-08 | 中国船舶重工集团公司第七二三研究所 | A kind of radiator applied to high power travelling wave tube |
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| CN110380595A (en) | 2019-10-25 |
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