CN112638125B - 一种机车充电机用紧凑化风冷散热系统 - Google Patents
一种机车充电机用紧凑化风冷散热系统 Download PDFInfo
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Abstract
本发明公开了一种机车充电机用紧凑化风冷散热系统,包括布置于充电机机柜内的风道(7),所述风道(7)前部内布置有功率模块(1),风道(7)中部布置有变压器电抗器组件(2)和电抗器(3),所述风道(7)前部和中部之间采用45°挡风板(8)衔接,所述风道(7)后部采用弧形导风板(9)连接风机(6),所述风机(6)位于充电机机柜内的出风口处。本发明通过风道结构优化,保证了最小空间内给散热部件提供较大风量来解决变压器电抗器组件冷却问题;通过对温度开关的改进应用,确保能够准确进行超温预警,避免充电机因温度过高造成的冒烟甚至燃烧故障;通过对风机的选型以及优化,满足充电机整体高度偏低,需要大风量、风压要求。
Description
技术领域
本发明涉及机车散热技术领域,具体为一种机车充电机用紧凑化风冷散热系统。
背景技术
为国内某机车公司提供3000马力重混混合动力调车机车动力蓄电池充放电装置,用于实现向动力蓄电池充电和由动力蓄电池向整车放电功能。充电机安装在车体中上部,柜体为一个300(高)×960(宽)×1400(长)mm的紧凑箱体,空间结构的限制对充电机的散热系统的高效散热能力和散热系统空间布局的紧凑化提出较高要求。
目前充电机散热系统分配空间大,可以通过增加风机的体积来增加风机风量和风压,满足系统散热要求。但是充电机散热系统所用空间较大,不利于整车电气布局。
发明内容
本发明目的是提供一种机车充电机用紧凑化风冷散热系统,在紧凑空间条件下进行风道设计,并设置保护预警,同时应用新型风机,满足紧凑化结构要求。
本发明是采用如下技术方案实现的:
一种机车充电机用紧凑化风冷散热系统,包括布置于充电机机柜内的风道,所述风道前部内布置有功率模块,风道中部布置有变压器电抗器组件和电抗器,所述风道前部和中部之间采用45°挡风板衔接,所述风道后部采用弧形导风板连接风机,所述风机位于充电机机柜内的出风口处。
优选的,所述风机采用外转子风机。
优选的,位于变压器电抗器组件的U、V、W每相温度最高点分别埋设有温度开关,三个温度开关串联于预警电路中。
充电机因为整车结构布局限制,对风道进风口、出风口位置都有具体要求,对风道的空间利用以及各部件高度也有较为苛刻的限制。充电机中的功率模块、变压器电抗器组件、电抗器都是发热较多部件,在充电机运行中需要实时散热。本方案采用风冷散热方式,通过风道结构优化,保护温度阈值较低的功率模块放置在进风口处,变压器电抗器组件以及电抗器能承受温度较高,放置于功率模块后端,保证了最小空间内给散热部件提供较大风量来解决变压器电抗器组件冷却问题;通过对温度开关的改进应用,确保能够准确进行超温预警,避免充电机因温度过高造成的冒烟甚至燃烧故障;通过对风机的选型以及优化,满足充电机整体高度偏低,需要大风量、风压的要求。
本发明技术方案带来的有益效果如下:
(1)、在小空间范围内满足充电机散热要求,便于机车整体布局。
(2)、通过超温预警设计,能有效的防止散热部件内温升过高,避免运行中出现冒烟、起火等严重故障。
(3)、外转子风机的应用,减少了充电机空间需求,降低了重量。
本发明设计合理,具有很好的实际应用价值。
附图说明
图1表示本发明示意图。
图中:1-功率模块,2-变压器电抗器组件,3-电抗器,4-接触器,5-中继组件,6-风机,7-风道,8-45°挡风板,9-弧形导风板。
具体实施方式
下面结合附图对本发明的具体实施例进行详细说明。
一种机车充电机用紧凑化风冷散热系统,如图1所示,包括布置于充电机机柜内的风道7,风道7的进风口和出风口错位布置于充电机机柜两侧。风道7前部内布置有功率模块1,风道7中部布置有变压器电抗器组件2和电抗器3,风道7前部和中部之间采用45°挡风板8进行衔接,风道7后部采用弧形导风板9连接风机6,风机6采用外转子风机,风机6位于充电机机柜内的出风口处。风道7的弧形导风板9外布置有接触器4和中继组件5。另外,位于变压器电抗器组件的U、V、W每相温度最高点分别埋设有温度开关,三个温度开关串联于预警电路中。
具体实施时:
(1)、风道紧凑化设计
对风道进行规划设计,冷却风从功率模块散热器吹出后对电抗器组件进行散热,为了使电抗器组件侧面能够流过足够的风量,需要利用挡风板改变风向。通过45°挡风板的应用,使风量集中通过变压器电抗器组件,起到好的冷却效果,同时也收缩空间,给充电机内其他电器部件留有足够空间;优化风机进风口风道,吹过电抗器的风通过弧形导风板,降低直角风道造成的压力损失,节约空间用于接触器和中继布局。风机入风口采用圆滑喇叭状风道,有效降低收缩损失,经验证仅有一般入口管道1/10的压力损失。
(2)、超温预警设计
空间紧凑的风冷散热系统,需要有较为精准的超温预警功能,对易于发热的变压器电抗器组件温度预警进行重新设计,将温度开关分别埋于U、V、W每相温度最高点(经风道试验确定),并将三个温度开关进行串联设计,确保在温度超过预警阈值时充电机能够进行保护,避免故障发生。
(3)、紧凑化部件选用
在重量和空间要求严苛的条件下,通过优选风机来达到减轻充电机重量和满足系统散热所需的风量风压要求。本方案首次在机车变流产品中采用外转子风机,外转子风机是定子在电动机的中间,转子在外的风机,转子连风叶在定子外转动,具有结构紧凑、节省空间、设计精巧等优点。通过外转子风机的应用,在较小空间内满足风冷散热系统的风量、风压要求。
最后所应说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照本发明实施例进行了详细说明,本领域的普通技术人员应当理解,对本发明的技术方案进行修改或者等同替换,都不脱离本发明的技术方案的精神和范围,其均应涵盖本发明的权利要求保护范围中。
Claims (1)
1.一种机车充电机用紧凑化风冷散热系统,其特征在于:包括布置于充电机机柜内的风道(7),所述风道(7)前部内布置有功率模块(1),风道(7)中部布置有变压器电抗器组件(2)和电抗器(3),所述风道(7)前部和中部之间采用45°挡风板(8)衔接收缩风道空间,所述风道(7)后部采用弧形导风板(9)连接风机(6),所述风机(6)位于充电机机柜内的出风口处;
所述风机(6)采用外转子风机;
位于变压器电抗器组件的U、V、W每相温度最高点分别埋设有温度开关,三个温度开关串联于预警电路中;
所述风道(7)的进风口和出风口错位布置于充电机机柜两侧;
所述风道(7)的弧形导风板(9)外布置有接触器(4)和中继组件(5)。
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