CN201893529U - 一种冶金电炉大电流集束水冷母线系统 - Google Patents

一种冶金电炉大电流集束水冷母线系统 Download PDF

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CN201893529U
CN201893529U CN2009202985394U CN200920298539U CN201893529U CN 201893529 U CN201893529 U CN 201893529U CN 2009202985394 U CN2009202985394 U CN 2009202985394U CN 200920298539 U CN200920298539 U CN 200920298539U CN 201893529 U CN201893529 U CN 201893529U
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electric furnace
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陈继军
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Leshan Shengjia Electric Co., Ltd.
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LESHAN CHENGJIA ELECTRIC CO Ltd
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Abstract

本实用新型公开了一种冶金电炉大电流集束水冷母线系统,其特征在于:将按设计要求排列好的水冷母线用环氧树脂浇铸为一个整体;浇铸成型的整体外面设置有不锈钢外壳,形成水冷母线系统;本实用新型现场安装和制作简单,费用低,无接触电阻引起的附加损耗,炉体上方的管路较少;使用大电流集束水冷母线系统可改善安装条件以及操作环境,使电炉短网系统电阻小,以降低电阻损耗,提高有效功率;电抗值越小越好,减少温度对供电回路阻抗的影响,以提高功率因数;保证电气绝缘性能良好和电动稳定性;使阻抗值和负荷分配达到平衡;减少铁磁体对电路回路阻抗值的影响。整体布局美观,性能优越,安全可靠。

Description

一种冶金电炉大电流集束水冷母线系统
技术领域
本实用新型涉及冶金电炉水冷母线技术,特别是一种冶金电炉大电流集束水冷母线系统。
背景技术
短网水冷母线系统是指从冶金电炉变压器二次出线端到电石炉电极的二次母线的总称。短网水冷母线系统是输送低电压大电流电能的装置,为使它能将取自电网的能量最有效地输入电炉,考虑如何配置合理的短网结构形式,选择适宜的短网电流密度,对获得良好的电力运行指标,同时具有很大的经济意义。
传统的冶金电炉水冷母线采用分散式焊接安装,一般为现场制作,短网水冷母线系统布置和安装具体要求:
1)短网长度应尽量缩短,使变压器尽量靠近电炉;
2)短网布置应使电流相位相反的铜管母线交叉排列,并且越靠近越好,设计中选取《电热规范》要求的最小净距10mm,尽量使其互感与自感相补偿,从而达到降低阻抗的目的;
3)由于短网承载着几万安培甚至几十万安培的大电流,在其周围空间存在着强大的交变磁场,位于其中的钢铁构件将因涡流和磁滞损耗而发热,因此在短网导电周围应尽量做好隔磁措施,以免引起附加电抗的增加及引起涡流和磁滞损失;为使短网稳固,每隔0.5~0.75m,用非磁性材料作夹板紧固之;短网铜管的固定和吊挂,为切断短网铜管四周的闭合磁路,在螺栓与槽钢的接触处均套一只铜垫;
4)短网的导电接触面越大越好,接触连接点应尽量减少,以免增加附加电阻;改善导电联接板,铜端头,补偿器,铜排等连接处的接触面,表面应刨光,磨平,且要镀锡。由单面压接改为双面夹接,增大接触面积以减少接触电阻;
5)短网(水冷铜管)的绝缘处理,管状母线(水冷铜管)管间距离小,应分别将管包扎绝缘,包扎方法及采用的材料如下:
将管表面清洗干净后,涂上一层环氧树脂;
内层采用硅有机玻璃云母带(δ=0.13~0.15)折半叠绕包扎三层;
中层采用玻璃丝带(δ=0.13~0.15)折半叠绕包扎三层;
外层采用白布带(δ=0.13~0.15)折半叠绕包扎一层后,再包扎一层黄腊带;
上述各绝缘材料缠绕时,均需涂以环氧树脂清漆;
铜管在导电联接板处跳相时,采用云母管作为铜管与导电板的绝缘;
铜管组装悬吊安装之后,在未联接变压器及水冷系统软管前,须用2.5KV兆欧表测量不同极(不同相)间的绝缘电阻,不应小于1MΩ;
整个短网铜管安装后,最外层用φ25石棉绳包扎二层,并涂上保温涂料,最后用薄铝板紧固。
所以,传统的短网水冷母线系统整体布局、施工难度极大,操作程序复杂,不容易质量控制,整体安装工艺、安全距离、质量不能保证,使系统性能和安全存在较大的隐患。
实用新型内容
本实用新型为解决上述问题,提供了一种冶金电炉大电流集束水冷母线系统,可以有效避免电极与铜排或电缆连接安装时造成电极损坏,安装和维修方便,工艺布局安全合理,保证系统的长期、安全可靠。
本实用新型的技术方案如下:
一种冶金电炉大电流集束水冷母线系统,其特征在于:将排列好的水冷母线用环氧树脂浇铸为一个整体;浇铸成型的整体外面设置有不锈钢外壳,形成水冷母线系统。
所述水冷母线系统通过吊具和安装梁固定,安装梁位于水冷母线系统的底部,吊具的底部安装于安装梁的两端,吊具的顶部固定安装于楼面。
所述水冷母线系统成长方体形。
所述吊具安装间距1.5~2m。
本实用新型现场安装和制作简单,费用低,无接触电阻引起的附加损耗,且安装和连接时,使短网冷却水从补偿器端的铜管流进和流出,这样会大大减少炉体上方的管路,使用大电流集束水冷母线系统可改善安装条件以及操作环境,使电炉短网系统电阻小,以降低电阻损耗,提高有效功率;电抗值越小越好,减少温度对供电回路阻抗的影响,以提高功率因数;保证电气绝缘性能良好和电动稳定性;使阻抗值和负荷分配达到平衡;减少铁磁体对电路回路阻抗值的影响。,整体布局美观,性能优越,安全可靠。
附图说明
图1为本实用新型的系统组成结构示意图
图2为本实用新型的系统组成的侧面结构示意图
具体实施方式
如图1-2所示,一种冶金电炉大电流集束水冷母线系统,将按设计要求排列好整齐的水冷母线1用环氧树脂2浇铸为一个整体;浇铸成型的整体外面设置有不锈钢外壳3,形成水冷母线系统。
所述水冷母线系统通过吊具4和安装梁5固定,安装梁5位于水冷母线系统的底部,吊具4的底部安装于安装梁5的两端,吊具4的顶部固定安装于楼面6。
所述水冷母线系统成长方体形。
采用专用标准吊具固定,吊具4的安装间距1.5~2m,保持间距均匀,按设计要求将大电流集束水冷母线系统,与电炉变压器连接,安装时,每安装好一段都要进行一次绝缘测试,吊具支架安装位置正确,横平紧直,固定牢固、间距均匀,采用大电流集束水冷母线系统,现场安装排列规范、现场制作简单,缩短工期,整体工艺美观,保证电气性能和安全距离,保证系统长期运行安全可靠。

Claims (4)

1.一种冶金电炉大电流集束水冷母线系统,其特征在于:将排列好的水冷母线(1)用环氧树脂(2)浇铸为一个整体;浇铸成型的整体外面设置有不锈钢外壳(3),形成水冷母线系统。
2.根据权利要求1所述的一种冶金电炉大电流集束水冷母线系统,其特征在于:所述水冷母线系统通过吊具(4)和安装梁(5)固定,安装梁(5)位于水冷母线系统的底部,吊具(4)的底部安装于安装梁(5)的两端,吊具(4)的顶部固定安装于楼面(6)。
3.根据权利要求1或2所述的一种冶金电炉大电流集束水冷母线系统,其特征在于:所述水冷母线系统成长方体形。
4.根据权利要求2所述的一种冶金电炉大电流集束水冷母线系统,其特征在于:所述吊具(4)的安装间距1.5~2m。 
CN2009202985394U 2009-12-25 2009-12-25 一种冶金电炉大电流集束水冷母线系统 Expired - Lifetime CN201893529U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113344347A (zh) * 2021-05-25 2021-09-03 国网湖南省电力有限公司 一种低压供电线路健康状态评估方法及系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113344347A (zh) * 2021-05-25 2021-09-03 国网湖南省电力有限公司 一种低压供电线路健康状态评估方法及系统
CN113344347B (zh) * 2021-05-25 2023-10-20 国网湖南省电力有限公司 一种低压供电线路健康状态评估方法及系统

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