CN216564896U

CN216564896U - Cooling structure of traction converter

Info

Publication number: CN216564896U
Application number: CN202122383307.2U
Authority: CN
Inventors: 周磊; 秦建辉; 唐邕浦; 刘金琢; 尹良兴; 陈洲明; 伍毅; 田纵横; 孙石林; 陈鹏翔; 胡宗杰; 谢海波; 梁伦胜
Original assignee: Zhuzhou CRRC Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-05-17
Anticipated expiration: 2031-09-29

Abstract

The utility model provides a cooling structure of a traction converter, which comprises a converter module, a fan and a reactor, wherein the fan is arranged between the converter module and the reactor, an air inlet of the cooling structure is arranged on one side of the converter module, which is far away from the fan, an air outlet of the cooling structure is arranged on one side of the reactor, which is far away from the fan, and the fan sucks cold air from the side of the converter module and blows the cold air out along the radial direction to enter an air duct of the reactor. The air duct is integrally distributed in such a way that the fan is arranged between the converter module and the reactor, the fan sucks cold air from the side of the converter module, the converter module with lower temperature is cooled firstly, and then the reactor with higher temperature is cooled, so that the utilization rate of the cooling air is improved, and the energy consumption of a cooling device is reduced.

Description

Cooling structure of traction converter

Technical Field

The utility model relates to the technical field of rail transit equipment, in particular to a cooling structure of a traction converter of an urban rail vehicle.

Background

With the rapid development of urban rail transit, an urban rail traction converter develops towards the direction of high power density and high integration, meanwhile, the requirement on the weight of traction converter equipment is more and more strict, and a plurality of heating elements are integrated in the traction converter, so that the problem that the volume and the weight of a heat dissipation structure are reduced as much as possible on the premise of ensuring the heat dissipation requirement becomes a hotspot in the field.

Patent No. CN201620849357.1 proposes a cooling system, which includes two water cooling system loops and an air cooling loop, where the two water cooling systems respectively include a heating module and a heat exchanger to be cooled, and share a circulation pump; the air cooling loop comprises a fan, an air outlet and two air inlets, cooling air enters the traction converter through the two air inlets, cools the two heat exchangers firstly, then cools a heating component in the traction converter after converging through the fan, and the cooling air is discharged through the air outlet. The cooling system that this patent provided adopts the mode that water-cooling and air-cooling system combined together to cool off traction converter, owing to adopt two sets of cooling system, the structure is comparatively complicated to be not fit for urban rail traction converter to the requirement of weight and volume.

The patent "an integrated form traction current transformer cooling system", has disclosed an integrated form traction current transformer cooling system, contains two mutually independent sealed first cavitys and second cavity, adopt water cooling system to cool off power module and with heat transfer to the heat exchanger of arranging in the second cavity in the first cavity, the second cavity adopts a plurality of fans to cool off the device that generates heat, and the cooling air cools off heat exchanger and auxiliary transformer earlier, cools off reactor and resistance again. In the cooling system in this patent, adopt water cooling and air-cooled mode to cool off traction converter, because the scheme that adopts a plurality of fans in the air-cooled system is unfavorable for traction converter's noise control.

In a rail transit vehicle, a traction converter comprises heating elements such as a power module and a reactor, and if heat generated by the heating elements cannot be dissipated as soon as possible, the running state of electric elements in the traction converter is influenced, so that the running fault of the whole machine is caused. Therefore, a cooling structure with high heat dissipation efficiency is required to dissipate heat generated by the heat generating element as quickly as possible, and the volume, weight, and the like of the heat dissipation system are required to be reduced as much as possible.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a novel cooling structure of a traction converter, which improves the heat dissipation of a heating element and reduces the volume and the weight of a heat dissipation system.

The cooling structure of the traction converter comprises a converter module, a fan and a reactor, wherein the fan is arranged between the converter module and the reactor, an air inlet of the cooling structure is arranged on one side, away from the fan, of the converter module, an air outlet of the cooling structure is arranged on one side, away from the fan, of the reactor, and the fan sucks cold air from the side of the converter module and blows the cold air out of an air duct of the reactor along the radial direction.

In one embodiment, a filter is arranged at an air inlet of the cooling structure, a module air duct of the converter module is arranged at the top of the converter module, and the module air duct is communicated with the air inlet and is connected with an air duct of the fan in a sealing manner through an air duct which inclines upwards.

In one embodiment, the converter module further comprises a power module and a heat sink substrate embedded in the bottom of the module air duct and serving as a part of the bottom surface of the module air duct, and the power module is disposed below the heat sink substrate.

In one embodiment, an air outlet cover with a downward opening is arranged on one side, away from the fan, of the reactor, and the air outlet is arranged on the lower portion of the air outlet cover.

In one embodiment, the filter is mounted on a cabinet door.

In one embodiment, the module air duct is tightly connected with the obliquely upward air duct and the air duct of the fan through sealing strips.

In one embodiment, heat sink fins are disposed above the heat sink base plate, the heat sink fins being located within the module air duct.

In one embodiment, the heat dissipation fins are provided in plurality and are sequentially arranged at equal intervals.

Compared with the prior art, the cooling structure of the traction converter has the following advantages:

1. the fan is arranged between the converter module and the reactor, the fan sucks cold air from the side of the converter module, the converter module with low temperature is cooled firstly, and then the reactor with high temperature is cooled, so that the utilization rate of the cooling air is improved, and the energy consumption of the cooling device is reduced.

2. The filter is installed and is convenient for maintain and reduce installation space on the cabinet door.

3. The radiator base plate is embedded at the bottom of the module air duct and is used as a part of the bottom surface of the module air duct, and radiating fins in the module air duct are arranged above the radiator base plate, so that the radiating capacity is increased, and the size is reduced.

4. The air outlet is provided with an air outlet cover, and an opening of the air outlet cover faces downwards, so that noise is reduced.

The technical features described above can be combined in various technically feasible ways to produce new embodiments, as long as the object of the utility model is achieved.

Drawings

The utility model will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic illustration of the cooling structure of the traction converter according to the utility model.

In the drawings, like components are denoted by like reference numerals. The figures are not drawn to scale.

Wherein the reference numerals are:

1. a cabinet door; 2. a filter; 3. a modular air duct; 4. a heat dissipating fin; 5. a heat sink substrate; 6. a power module; 7. a converter module; 8. a fan; 9. a reactor; 10. and an air outlet cover.

Detailed Description

The utility model will be described in further detail below with reference to the drawings and specific examples. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.

Parts which are not described in the utility model can be realized by adopting or referring to the prior art.

The utility model provides a cooling structure of a traction converter, as shown in fig. 1, the cooling structure of the traction converter comprises a converter module 7, a fan 8 and a reactor 9, wherein the fan 8 is arranged between the converter module 7 and the reactor 9, an air inlet of the cooling structure is arranged on one side, away from the fan 8, of the converter module 7, an air outlet of the cooling structure is arranged on one side, away from the fan 8, of the reactor 9, cold air is sucked into the fan 8 from the side of the converter module 7, and the cold air is blown out from the top of the fan 8 in the radial direction and enters an air duct of the reactor 9 after being sucked from the top of the fan 8.

The air duct is integrally distributed in such a way that the fan is arranged between the converter module and the reactor, the fan sucks cold air from the side of the converter module, the converter module with lower temperature is cooled firstly, and then the reactor with higher temperature is cooled, so that the utilization rate of the cooling air is improved, and the energy consumption of a cooling device is reduced.

In a preferred embodiment, the filter 2 is arranged at the air inlet of the cooling structure, the module air duct 3 of the converter module 7 is arranged at the top of the converter module 7, and the module air duct 3 is communicated with the air inlet and is connected with the air duct of the fan 8 in a sealing manner through an air duct which inclines upwards.

In a more preferred embodiment, the converter module 7 further includes a power module 6 and a heat sink base plate 5, the heat sink base plate 5 is embedded at the bottom of the module air duct 3 and is a part of the bottom surface of the module air duct 3, the power module 6 is disposed below the heat sink base plate 5, a heat dissipation fin 4 is disposed above the heat sink base plate 5, and the heat dissipation fin 4 is located in the module air duct 3, which is beneficial to increasing the heat dissipation capability of the module and reducing the volume.

In a preferred embodiment, an air outlet cover 10 with a downward opening is arranged on one side, away from the fan, of the reactor 9, the air outlet cover 10 is arranged outside the cabinet body, and an air outlet is arranged at the lower part of the air outlet cover 10, so that the noise of the whole cabinet is reduced.

In a preferred embodiment, the filter 2 is mounted on a cabinet door. The filter can filter solid impurity such as dust and water, and the filter is installed and is convenient for maintain and reduce installation space on the cabinet door.

In one embodiment, the module air duct 3 is tightly connected with the air duct which is inclined upwards and the air duct of the fan through sealing strips.

In a preferred embodiment, the heat dissipation fins 4 are arranged above the heat sink base plate 5, and the heat dissipation fins 4 are located in the module air duct 3, which is beneficial to increasing the heat dissipation capacity of the module and reducing the volume. More preferably, the heat dissipating fins 4 are arranged in series at equal intervals.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. It will thus be appreciated by those skilled in the art that while the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A cooling structure of a traction converter comprises a converter module, a fan and a reactor and is characterized in that the fan is arranged between the converter module and the reactor, an air inlet of the cooling structure is arranged on one side, far away from the fan, of the converter module, an air outlet of the cooling structure is arranged on one side, far away from the fan, of the reactor, and the fan sucks cold air from the side of the converter module and blows out the air into an air channel of the reactor along the radial direction.

2. The traction converter cooling structure according to claim 1, wherein a filter is provided at the air inlet of the cooling structure, a module air duct of the converter module is provided at the top of the converter module, and the module air duct is communicated with the air inlet and is hermetically connected with the air duct of the fan through an obliquely upward air duct.

3. The traction converter cooling structure according to claim 2, wherein the converter module further comprises a power module and a heat sink base plate embedded in the bottom of the module duct as a part of the bottom surface of the module duct, the power module being disposed below the heat sink base plate.

4. The cooling structure of the traction converter according to any one of claims 1 to 3, wherein an air outlet housing with a downward opening is provided on a side of the reactor away from the fan, and the air outlet is provided at a lower portion of the air outlet housing.

5. The traction converter cooling structure according to claim 2, wherein said filter is mounted on a cabinet door.

6. The cooling structure of a traction converter according to claim 2 or 3, wherein the module duct is tightly connected to the obliquely upward duct and the fan duct by a sealing strip.

7. The traction converter cooling structure according to claim 3, wherein a heat sink fin is disposed above the heat sink base plate, the heat sink fin being located in the module air duct.

8. The cooling structure of a traction converter according to claim 7, wherein said heat dissipating fins are provided in plurality and arranged in sequence at equal intervals.