WO2020125284A1 - 机车变流器斩波电阻散热装置 - Google Patents

机车变流器斩波电阻散热装置 Download PDF

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WO2020125284A1
WO2020125284A1 PCT/CN2019/118387 CN2019118387W WO2020125284A1 WO 2020125284 A1 WO2020125284 A1 WO 2020125284A1 CN 2019118387 W CN2019118387 W CN 2019118387W WO 2020125284 A1 WO2020125284 A1 WO 2020125284A1
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heat dissipation
converter
chopper
dissipation device
resistor
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PCT/CN2019/118387
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English (en)
French (fr)
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韩建宁
张修同
王彬
金春羽
马连凤
孙晓丽
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中车永济电机有限公司
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Publication of WO2020125284A1 publication Critical patent/WO2020125284A1/zh

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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
    • 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
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides

Definitions

  • the invention relates to the heat dissipation of the chopper resistance of the locomotive converter, in particular to the heat dissipation device of the chopper resistance of the locomotive converter.
  • Traction converter is the core component of the electric transmission system of rail transit, and its safe and reliable work is the guarantee of the safe, reliable and stable operation of the whole vehicle system.
  • High-power locomotive traction converter (referred to as converter) is mainly composed of rectifier, intermediate DC link and inverter, of which the chopper circuit belongs to the intermediate DC link of the converter, the main function is to realize the overvoltage of the DC bus voltage Suppression and system protection.
  • the traction control unit TCU
  • the traction control unit controls the chopper circuit to suppress the DC bus overvoltage, and at the same time will release a lot of energy heat with the chopper resistance. If the energy cannot be dissipated in time, it will cause the burning of the chopper resistor and even affect the reliable operation of the converter. Therefore, it is very important to realize the heat dissipation of the chopper resistor in the converter design.
  • the environment of the chopper resistor is a relatively closed structure, the chopper resistor is placed in the resistor box, and the top cover of the chopper resistor box is designed with a heat dissipation filter
  • the mesh window solves the heat dissipation problem of the chopper resistor through natural heat dissipation.
  • the above heat dissipation design of the chopper resistor has the following shortcomings: (1) The chopper resistor box is sealed around, and the hot air circulation is slow, which is not conducive to the resistance heat dissipation; (2) It is not easy to operate when the chopper resistor is repaired and maintained.
  • the invention designs a high-power locomotive converter chopper resistance heat dissipation device, which has a reasonable installation layout, effectively solves the heat dissipation problem of the chopper resistance, and improves the reliability of the converter operation.
  • the high-power locomotive converter chopper resistance heat dissipation device designed by the present invention can quickly take away the heat released by the chopper resistance, effectively solve the heat dissipation problem of the chopper resistance, and is beneficial to the maintenance and maintenance of the chopper resistance To ensure the normal operation of the chopper resistor.
  • the present invention is implemented using the following technical solution: a locomotive converter chopper resistance heat dissipation device, and a ventilation hole is opened on the right side baffle of the chopper resistance box in the converter cabinet.
  • a fan assembly frame is provided on the right side of the chopper resistance box in the converter cabinet, a group of fan assemblies are fixed on the fan assembly frame, and a wind deflector is provided above the fan assembly.
  • the wind deflector is tilted, and the cooling air is sucked from below the fan assembly. After the cooling wind changes direction through the wind deflector, it enters the chopper resistance box through the ventilation holes.
  • the cooling wind continuously passes the heat released by the chopper resistance through the cooling filter window belt Go to realize the heat dissipation of the chopper resistor.
  • the fan assembly includes two heat dissipation fans.
  • the invention solves the heat dissipation problem of the chopper resistance of the high-power locomotive converter.
  • the invention can be widely applied to the cooling and heat dissipation of converter power resistance devices such as railway locomotives, high-speed EMUs, and urban rail transit.
  • converter power resistance devices such as railway locomotives, high-speed EMUs, and urban rail transit.
  • the structure of the present invention is compact and dexterous, easy to install, improves the maintainability of the chopper resistor, and ensures the normal operation of the chopper resistor;
  • the present invention solves the problem of heat dissipation of the chopper resistance, and improves the problem of ventilation and heat dissipation in the converter cabinet.
  • FIG. 1 is a schematic structural diagram 1 of a chopper resistance heat dissipation device for a high-power locomotive converter of the present invention.
  • FIG. 2 is a second schematic structural view of the chopper resistance heat dissipation device of the high-power locomotive converter of the present invention.
  • FIG. 3 is a schematic structural diagram 3 of the chopper resistance heat dissipation device of the high-power locomotive converter of the present invention.
  • the chopper resistance heat dissipation device designed by the present invention includes a fan assembly frame, a fan assembly 1, and a heat dissipation and air induction plate 2.
  • the structure is shown in FIGS. 1, 2, and 3.
  • FIG. 1 Schematic diagram of the chopper resistor heat dissipation device.
  • the chopper resistor 5 is fixedly installed in the chopper resistor box of the converter cabinet.
  • the front and rear of the chopper resistor box and the left side sealing baffle are designed.
  • the right side of the chopper resistor box is a vent hole.
  • the ventilation and cooling fan assembly 1 is designed to be installed and fixed on the frame of the fan assembly, and a group of fan assemblies is provided with an air induction plate 2 to form a ventilation and heat dissipation channel with the ventilation holes of the chopper resistance box.
  • Figure 3 is a schematic diagram of the overall design of the chopper resistance heat dissipation device.
  • the fan assembly 1, the air deflector 2, the chopper resistance box vent 3 and the heat dissipation filter window 4 form a set of chopper resistance heat dissipation channels. Without affecting the work of other components, the existing resources are effectively used, environmental protection and energy saving, and the installation method is more convenient and easy.
  • the heat dissipation device has compact and smart structure design, convenient installation, good ventilation and heat dissipation effect, and meets the requirement of rapid heat dissipation of the converter chopper resistance.
  • the cooling air is drawn from below the fan and enters the ventilation hole of the chopper resistance box along the air deflector.
  • the cooling wind continuously takes the heat released by the chopper resistance through the heat dissipation filter window, and finally achieves The purpose of chopper resistor for rapid heat dissipation.
  • the above heat dissipation device has been successfully applied to the cooling and heat dissipation of the chopper resistance of the high-power locomotive converter.
  • the present invention can be widely applied to the cooling and dissipation of the power resistance devices of the converter such as railway locomotives, high-speed EMUs, and urban rail transit.
  • the converter chopper resistance heat dissipation device is shown in the figure.
  • the cooling air is drawn from under the fan, and a part of the cooling air enters the chopper resistance box along the direction of the cooling channel air guide plate Ventilation holes and cooling air constantly take away the heat released by the chopper resistor through the heat dissipation filter window to achieve the purpose of rapid heat dissipation of the chopper resistor.
  • the other part of the cooling air takes away the surrounding heat along the direction of the heat dissipation holes of the converter cabinet directly above the fan, ensuring the circulation of the surrounding air and solving the accumulation of hot air, which solves the heat dissipation problem in the converter cabinet.

Abstract

本发明涉及机车变流器斩波电阻的散热，具体为机车变流器斩波电阻散热装置。机车变流器斩波电阻散热装置，变流器柜内在斩波电阻箱的右侧设置有风扇组件框架，风扇组件框架上固定有一组风扇组件，风扇组件的上方设有固定在变流器柜上的引风板，斩波电阻箱右侧挡板开有通风孔，引风板倾斜设置，冷却风从风扇组件下方吸取，冷却风经引风板改变方向后由通风孔进入斩波电阻箱，冷却风不断将斩波电阻释放的热量穿过散热滤网窗带走，实现斩波电阻散热。该散热装置结构设计紧凑灵巧，安装方便，通风散热效果良好，满足变流器斩波电阻快速散热的需求。

Description

机车变流器斩波电阻散热装置 技术领域
本发明涉及机车变流器斩波电阻的散热，具体为机车变流器斩波电阻散热装置。
背景技术
牵引变流器是轨道交通电传动系统的核心组成部分，其安全可靠的工作是整车系统安全、可靠、稳定运行的保证。大功率机车牵引变流器(简称变流器)主要由整流器、中间直流环节和逆变器组成，其中斩波回路属于变流器中间直流环节，主要功能是实现对直流母线电压过压时的抑制和系统保护，当直流母线电压上升至斩波保护阀值时，牵引控制单元(TCU)控制斩波回路工作抑制直流母线过压，同时将伴随着斩波电阻瞬间释放出很大能量的热量，这些能量如果不能及时的散出，会引起斩波电阻的烧损，甚至影响变流器的可靠运行，因此在变流器设计中实现斩波电阻的散热至关重要。
在机车变流器的设计时，为了减少对其他器件的影响，斩波电阻的环境是一种相对密闭的结构，斩波电阻放置于电阻箱中，在斩波电阻箱上端顶盖设计散热滤网窗，通过自然散热方式解决斩波电阻的散热问题。斩波电阻的上述散热设计存在以下缺点：(1)斩波电阻箱四周密封设计，热空气流通缓慢，不利于电阻散热；(2)在斩波电阻维修维护时，不易操作。
本发明设计一种大功率机车变流器斩波电阻散热装置，安装布局合理，有效地解决了斩波电阻的散热问题，提高了变流器工作的可靠性。
发明内容
针对上述问题，本发明设计的大功率机车变流器斩波电阻散热装置，能够快速带走斩波电阻释放的热量，有效地解决斩波电阻的散热问题，同时有利于斩波电阻的维修维护，保证斩波电阻的正常工作。
本发明是采用如下的技术方案实现的：机车变流器斩波电阻散热装置，变流器柜内斩波电阻箱右侧挡板开有通风孔。
上述的机车变流器斩波电阻散热装置，变流器柜内在斩波电阻箱的右 侧设置有风扇组件框架，风扇组件框架上固定有一组风扇组件，风扇组件的上方设有引风板，上述引风板倾斜设置，冷却风从风扇组件下方吸取，冷却风经引风板改变方向后由通风孔进入斩波电阻箱，冷却风不断将斩波电阻释放的热量穿过散热滤网窗带走，实现斩波电阻散热。
上述的机车变流器斩波电阻散热装置，风扇组件框架下方固定有另外一组风扇组件，冷却风从该组风扇组件下方吸取，然后沿着该组风扇组件正上方变流器柜散热滤网窗方向将周围热量带走。
上述的机车变流器斩波电阻散热装置，风扇组件包括两个散热风扇。
本发明技术方案带来的有益效果：
本发明解决了大功率机车变流器斩波电阻的散热问题，同时该发明可推广应用于铁路机车、高速动车组、城轨交通等变流器功率电阻器件冷却散热。本发明主要的创新性和先进性如下：
(1)实现了快速带走斩波电阻释放的热量，有效地解决了斩波电阻的散热问题；
(2)本发明的结构设计紧凑灵巧，安装方便，提高了斩波电阻可维修维护性，保证斩波电阻的正常工作；
(3)本发明解决斩波电阻散热问题的同时，改善了变流器柜内通风散热问题。
附图说明
图1为本发明大功率机车变流器斩波电阻散热装置结构示意图一。
图2为本发明大功率机车变流器斩波电阻散热装置结构示意图二。
图3为本发明大功率机车变流器斩波电阻散热装置结构示意图三。
图中序号具体明细：1、风扇组件；2、引风板；3、通风孔；4、散热滤网窗，5-斩波电阻。
具体实施例
本发明设计的斩波电阻散热装置包括风扇组件框架、风扇组件1、散热引风板2，结构如图1、图2、图3所示。
图1斩波电阻散热装置结构示意图中，斩波电阻5固定安装于变流器柜 斩波电阻箱内，斩波电阻箱前后以及左侧密封挡板设计，斩波电阻箱右侧为通风孔设计，相比原密封设计优点之一是有利于斩波电阻的维修维护，另一方面可以快速有效通风散热。图2斩波电阻散热装置结构示意图中，通风散热风扇组件1设计安装固定于风扇组件框架上，其中一组风扇组件上方加装引风板2，与斩波电阻箱通风孔形成通风散热通道。图3结构示意图为斩波电阻散热装置整体设计图，图中由风扇组件1、引风板2、斩波电阻箱通风孔3和散热滤网窗4形成一套斩波电阻散热通道，该通道在不影响其他部件工作的情况下，有效地利用了现有资源，环保节能，在安装方式上更加方便易行。
该散热装置结构设计紧凑灵巧，安装方便，通风散热效果良好，满足变流器斩波电阻快速散热的需求。在通风散热风扇的动力驱动下，冷却风从风扇下方吸取，沿着引风板进入斩波电阻箱通风孔，冷却风不断将斩波电阻释放的热量穿过散热滤网窗带走，最终实现斩波电阻快速散热的目的。
以上所述散热装置已成功应用于大功率机车变流器斩波电阻冷却散热，同时本发明可推广应用于铁路机车、高速动车组、城轨交通等变流器功率电阻器件冷却散热。该变流器斩波电阻散热装置如图所示，风扇组件(4个散热风扇)工作驱动下，冷却风从风扇下方吸取，有一部分冷却风沿着散热通道引风板方向进入斩波电阻箱通风孔，冷却风不断将斩波电阻释放的热量穿过散热滤网窗带走，实现斩波电阻快速散热的目的。另外一部分冷却风沿着风扇正上方变流器柜散热孔方向将周围热量带走，保证周围空气流通的同时解决热空气的积累，很好的解决了变流器柜内的散热问题。

Claims (5)

  1. 机车变流器斩波电阻散热装置，其特征在于变流器柜内斩波电阻箱右侧挡板开有通风孔(3)。
  2. 根据权利要求1所述的机车变流器斩波电阻散热装置，其特征在于变流器柜内在斩波电阻箱的右侧设置有风扇组件框架，风扇组件框架上固定有一组风扇组件(1)，风扇组件(1)的上方设有引风板(2)，上述引风板(2)倾斜设置，冷却风从风扇组件下方吸取，冷却风经引风板改变方向后由通风孔(3)进入斩波电阻箱，冷却风不断将斩波电阻释放的热量穿过散热滤网窗(4)带走，实现斩波电阻散热。
  3. 根据权利要求2所述的机车变流器斩波电阻散热装置，其特征在于风扇组件框架下方固定有另外一组风扇组件(1)，冷却风从该组风扇组件下方吸取，然后沿着该组风扇组件正上方变流器柜散热滤网窗(4)方向将周围热量带走。
  4. 根据权利要求2所述的机车变流器斩波电阻散热装置，其特征在于一组风扇组件(1)包括两个散热风扇。
  5. 根据权利要求3所述的机车变流器斩波电阻散热装置，其特征在于另外一组风扇组件(1)包括两个散热风扇。
PCT/CN2019/118387 2018-12-20 2019-11-14 机车变流器斩波电阻散热装置 WO2020125284A1 (zh)

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CN103458656A (zh) * 2013-08-01 2013-12-18 深圳市英威腾交通技术有限公司 一种辅助电源箱
CN206212552U (zh) * 2016-11-28 2017-05-31 株洲中车时代电气股份有限公司 一种用于轨道交通的牵引变流器
CN109673133A (zh) * 2018-12-20 2019-04-23 中车永济电机有限公司 机车变流器斩波电阻散热装置

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