CN109216961A - 一种用于超高温的不锈钢连接柱端子结构 - Google Patents
一种用于超高温的不锈钢连接柱端子结构 Download PDFInfo
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Abstract
本发明所述一种用于超高温的不锈钢连接柱端子结构,包括陶瓷主体,陶瓷主体包括至少两个平行的安装通孔,安装通孔设置连接器主体,连接器主体的上部设有夹层,下部设有贯穿空腔,夹层内设有连接片,贯穿空腔内设置弹片,夹层由上片和下片组成,上片、连接片和下片设有贯穿的铆钉和两个端子紧固螺钉,弹片通过铆钉固定于下片下方,两个端子紧固螺钉设置于铆钉两侧,其下端抵接于弹片上表面,陶瓷主体对应端子紧固螺钉设有固定孔,其结构紧固,而且具有优越的耐腐蚀性并且在高温中仍有强的机械阻力。
Description
技术领域
本发明属于接线柱技术领域,具体地说,涉及一种用于超高温的不锈钢连接柱端子结构。
背景技术
在高温电气端子应用中,即使发生火灾,有些区域也必须要保持连接的完整性。例如,这涉及到用于公路和铁路隧道中的应急照明的连接端子、地下运输,以及应急电路的连接和通风的供应。
遇到的其中的一个问题是在端子接线柱中,当在发生火灾的过程中,当前用作电导体的材料不能承受火灾时达到的温度,火灾通常长时间超过500℃。在具有良好导电性的普通材料中,有红铜合金,例如黄铜、带磷的青铜和纯红铜,但是这些金属在这些温度下变得具有延展性,并且导体的紧固会松动,这可能会导致断开。其他合金如铍青铜会变脆。在可能使用的金属中,钢本身会很快地被氧化并失去其钢性。
在600至700℃的温度下能够承受相当长时间的唯一的现有金属,同时具有与黄铜类似的导电性的是纯镍,其成本高。便宜一些和较常见的铬和镍是基于不锈钢的,当抵抗这些温度时,起具有导电性非常低的缺点,这导致它们通过焦耳效应而变热。但是,在电流通过期间,端子接线柱的温度被标准限制在45℃,特别是标准EN60947-7-1和EN60947-7-2。
如果使用普通的不锈钢,例如Aisi 304,316,303,301及其等同物,要求在接线盒中使用强硬的通道,以降低它们的电阻并因此通过焦耳效应限制它们的加热。这种限制使他们的制造变得困难或不可能,并且他们的价格变得令人望而却步。
铝具有良好的导电体,但是因为其低熔点致使其不能使用。
发明内容
本发明克服了现有技术中的缺点,提供了一种用于超高温的不锈钢连接柱端子结构,其可耐受环境温度和火灾中遇到的温度,现有标准要求的在45℃以下的通过焦耳效应不会过热,而且在这些条件下,保持必要的机械阻力以确保导体的紧固并因此保持电路的连续性。
为了解决上述技术问题,本发明是通过以下技术方案实现的:
一种用于超高温的不锈钢连接柱端子结构,包括陶瓷主体,所述陶瓷主体包括至少两个平行的安装通孔,所述安装通孔设置连接器主体,所述连接器主体的上部设有夹层,下部设有贯穿空腔,所述夹层内设有连接片,所述贯穿空腔内设置弹片,所述夹层由上片和下片组成,所述上片、连接片和下片设有贯穿的铆钉和两个端子紧固螺钉,所述弹片通过铆钉固定于所述下片下方,两个所述端子紧固螺钉设置于所述铆钉两侧,其下端抵接于所述弹片上表面,所述陶瓷主体对应所述端子紧固螺钉设有固定孔。
进一步,所述陶瓷主体的中心位置设有螺钉孔,所述螺钉孔设有安装螺钉。
进一步,所述连接器主体由不锈钢片弯折而成,形成所述贯穿空腔,所述上片和下片分别为不锈钢片的两端弯折而成,所述上片位于所述下片上方,端部相对而设置,其上下之间形成所述夹层。
进一步,所述连接片为红铜或者镍合金的连接片。
进一步,所述弹片为310不锈钢、镍合金、镀镍红铜或镀银红铜材质的弹片。
进一步,所述铆钉为红铜或不锈钢或镍合金材质的铆钉。
进一步,所述连接片平面延伸凸起。
进一步,所述空腔底部设有阻力筋。
与现有技术相比,本发明的有益效果是:
本发明所述一种用于超高温的不锈钢连接柱端子结构,包括陶瓷主体,陶瓷主体包括至少两个平行的安装通孔,安装通孔设置连接器主体,连接器主体的上部设有夹层,下部设有贯穿空腔,夹层内设有连接片,贯穿空腔内设置弹片,夹层由上片和下片组成,上片、连接片和下片设有贯穿的铆钉和两个端子紧固螺钉,弹片通过铆钉固定于下片下方,两个端子紧固螺钉设置于铆钉两侧,其下端抵接于弹片上表面,陶瓷主体对应端子紧固螺钉设有固定孔,其结构紧固,而且具有优越的耐腐蚀性并且在高温中仍有强的机械阻力。
附图说明
附图用来提供对本发明的进一步理解,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制,在附图中:
图1是本发明一种用于超高温的不锈钢连接柱端子结构示意图;
图2是本发明的部件分解图;
图3是本发明的剖视图;
图4是图3中A-A向剖视图;
图5是图3中B-B向剖视图。
图中,1——陶瓷主体; 2——螺钉孔;
3——安装螺钉; 4——安装通孔;
5——连接器主体; 6——贯穿空腔;
7——连接片; 8——弹片;
9——上片; 10——下片;
11——铆钉; 12——端子紧固螺钉;
13——固定孔; 14——电线;
15——阻力筋; 16——凸起。
具体实施方式
以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
如图1至5所示,本发明所述一种用于超高温的不锈钢连接柱端子结构,包括陶瓷主体1,其耐温在1000℃以上,其对电力导电部分的位置进行固定;保证电流穿过的部件之间的电绝缘,以及在这些部件和附着端子接线柱的支撑件之间的电绝缘。陶瓷主体1的中心位置设有螺钉孔2,螺钉孔2设有安装螺钉3,通过安装螺钉3陶瓷主体1固定在支撑件上,如金属外壳、机柜、安装板。
陶瓷主体1包括两个平行的安装通孔4,安装通孔4设置连接器主体5,连接器主体5的上部设有夹层,下部设有贯穿空腔6,夹层内设有连接片7,贯穿空腔6内设置弹片8,夹层由上片9和下片10组成,上片9、连接片7和下片10设有贯穿的铆钉11和两个端子紧固螺钉12,弹片8通过铆钉11固定于下片10下方,两个端子紧固螺钉12设置于铆钉11两侧,其下端抵接于弹片8上表面,陶瓷主体1对应端子紧固螺钉12设有固定孔13,这两个端子紧固螺钉12确保夹紧位于端子接线柱里的电线14,上片9、连接片7和下片10这三个厚度的金属夹层的机械内聚力也一样。
连接器主体5由不锈钢片弯折而成,例如304不锈钢,316不锈钢,303不锈钢,不锈钢在高温下具有良好的机械强度和低电阻,形成贯穿空腔6,上片9和下片10分别为不锈钢片的两端弯折而成,上片9位于下片10上方,端部相对而设置,其上下之间形成夹层,该部件通过切割金属板的一部分以经济的方式制造出该主体,确保了在适当紧固时电缆的机械性能。不锈钢优异的保温性能确保在火灾期间保持恒定。该主体的内部具有小的阻力筋15,设计用于当电线14被端子紧固螺钉12压缩时,增强对电线14拉动的阻力。
其中,连接片7为红铜或者镍合金的连接片7,其宽度等于端子的尺寸,并且其厚度的计算以用于电流的通过,而不会由于焦耳效应而产生过多的加热,同时,由于连接片7开有螺孔减少了连接片7的面积,连接片7平面延伸凸起16增加其面积,从而避免因焦耳效应引起的局部变热。
弹片8为310不锈钢、镍合金、镀镍红铜或镀银红铜材质以增加其耐温性,通过端子紧固螺钉12将该弹片8压在电线14上,它确保了负载的分布,并且还防止端子紧固螺钉12的末端切断电线14,当拧紧端子紧固螺钉12时,该弹片8逐渐弯曲。
铆钉11为红铜或不锈钢或镍合金材质的铆钉11,铆钉11确保不锈钢弹片8保持其位置。另外,它还有助于上片9、连接片7和下片10这三个金属片的位置。
本专利中提及的金属的临界温度:
-黄铜在940℃熔化,但机械阻力从185℃下降;
-红铜在1084℃熔化,但通过延展性,在高温下具有卓越的抗氧化性;
-镍1455℃,优异的抗氧化性可达900℃;
-不锈钢301,303,304,316:熔化温度1580℃,在空气中在高达760℃时,具有优越的耐腐蚀性并且温度中有强的机械阻力。
最后应说明的是:以上仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换,但是凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种用于超高温的不锈钢连接柱端子结构,其特征在于,包括陶瓷主体,所述陶瓷主体包括至少两个平行的安装通孔,所述安装通孔设置连接器主体,所述连接器主体的上部设有夹层,下部设有贯穿空腔,所述夹层内设有连接片,所述贯穿空腔内设置弹片,所述夹层由上片和下片组成,所述上片、连接片和下片设有贯穿的铆钉和两个端子紧固螺钉,所述弹片通过铆钉固定于所述下片下方,两个所述端子紧固螺钉设置于所述铆钉两侧,其下端抵接于所述弹片上表面,所述陶瓷主体对应所述端子紧固螺钉设有固定孔。
2.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述陶瓷主体的中心位置设有螺钉孔,所述螺钉孔设有安装螺钉。
3.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述连接器主体由不锈钢片弯折而成,形成所述贯穿空腔,所述上片和下片分别为不锈钢片的两端弯折而成,所述上片位于所述下片上方,端部相对而设置,其上下之间形成所述夹层。
4.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述连接片为红铜或者镍合金的连接片。
5.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述弹片为310不锈钢、镍合金、镀镍红铜或镀银红铜材质的弹片。
6.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述铆钉为红铜或不锈钢或镍合金材质的铆钉。
7.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述连接片平面延伸凸起。
8.根据权利要求1所述一种用于超高温的不锈钢连接柱端子结构,其特征在于,所述空腔底部设有阻力筋。
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