CN201083790Y - 电场感应型高压带电指示器 - Google Patents
电场感应型高压带电指示器 Download PDFInfo
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- CN201083790Y CN201083790Y CNU2007200538537U CN200720053853U CN201083790Y CN 201083790 Y CN201083790 Y CN 201083790Y CN U2007200538537 U CNU2007200538537 U CN U2007200538537U CN 200720053853 U CN200720053853 U CN 200720053853U CN 201083790 Y CN201083790 Y CN 201083790Y
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- circuit
- electric field
- field induction
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 18
- 230000005684 electric field Effects 0.000 title claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum Chemical group 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[Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052715 tantalum Inorganic materials 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 4
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Abstract
本实用新型公开了一种电场感应型高压带电指示器，它包括内部埋设有铜感应元件的绝缘材料主体以及依次电连接的整流电路、储能电路、比较电路、设有发光管的驱动电路，其中整流电路的输入端电连接铜感应元件，输出端连接储能电路输入端，储能电路的输出端连接比较电路的输入端，比较电路的输出端连接驱动电路的输入端，驱动电路的输出端连接整流电路输出端。本实用新型的优点是：采用电场感应，无直接电气连接，不会有过电压，无安全风险，采用紧凑的低功耗设计，充分利用感应能量，减少了高成本的传感元件，结构小巧，安装非常方便，无须电池等外接电源，使用寿命长，防水性能好，适应恶劣工作环境。
Description
电场感应型高压带电指示器技术领域本实用新型涉及一种高压带电指示器，属于高压检测装置。 背景技术电力系统的发电，配电，送电系统中都广泛用到各种高压设备，为避免操 作人员在带电情况下的误操作造成人身伤亡和设备严重损坏事故，电力系统要 求监测高压带电状况。在传统设备中常用特殊的支柱绝缘子(芯棒、极板式)来传递高压带电体带 电状况，从高压侧直接取样，或者通过高阻值的电阻直接取样，分压后驱动氖 泡发光。上述的支柱绝缘子不仅造价昂贵，工艺复杂，而且由于和高压侧有直接的电 气连接，存在安全隐患。当系统有过电压时，电容电压的增加可以到达数千伏， 直接影响到操作人员的人身安全和设备的安全。甚至出现绝缘击穿导致重大的 安全事故。实用新型内容本实用新型的目的是提供一种结构简单、无需电气接触就可检测高压带电体 带电状况的电场感应型高压带电指示器。本实用新型的技术解决方案是： 一种电场感应型高压带电指示器，它包括内 部埋设有铜感应元件的绝缘材料主体以及依次电连接的整流电路、储能电路、 比较电路、设有发光管的驱动电路，其中整流电路的输入端电连接铜感应元件， 输出端连接储能电路输入端，储能电路的输出端连接比较电路的输入端，比较 电路的输出端连接驱动电路的输入端，驱动电路的输出端连接整流电路输出端。主体可以接着电缆头的半导体接地体上，其内部的铜感应元件可产生感应电 压，对地积聚电荷后，经过整流电路转化为直流后给储能电路充电，当达到比 较电路预先设定的电压值后输出，驱动电路工作，点亮发光管，发光管会消耗 能量，当电压小于比较电路预设电压值后，驱动电路停止工作，发光管熄灭， 形成一个闪烁循环，由此可以检测出带电体是否带有高压，方便快捷，安全可靠，无需外接电源，而且可以通过发光管的闪烁频率直观的显示出电压的高低 来。所述的主体的垂直截面呈梯形，所述铜感应元件设在较宽侧的主体内，这 样主体基本呈锲形，方便把持，即容易嵌入测试孔内，又可以保证足够的绝缘 距离。所述的主体上较窄侧设有带内盲孔的铜螺丝，方便安装，直接拧上即可。 所述的整流电路为全桥整流电路或者半桥整流电路，结构简单，设定方便。 所述的储能电路内设电容为钽电容或者超级电容，这样的电路充电速度快，能量转化效率高，线路简单，容易小型化。所述的比较电路为测量电路，线路简单，设置方便，容易小型化。 所述的发光管为发光二极管或氖泡，点亮需要的能量低，反应灵敏。 本实用新型的优点是：采用电场感应，无直接电气连接，不会有过电压，无安全风险，采用紧凑的低功耗设计，充分利用感应能量，减少了高成本的传感元件，结构小巧，安装非常方便，无须电池等外接电源，使用寿命长，防水性能好，适应恶劣工作环境。附图说明附图1为本实用新型实施例中主体的垂直剖视图； 附图2为本实用新型实施例中电路之间的逻辑框图；1、主体，2、铜感应元件，3、铜螺丝，4、整流电路，5、储能电路，6、 比较电路，7、驱动电路。具体实施方式 实施例：参阅图1和图2所示， 一种电场感应型高压带电指示器，它包括内部埋设 有铜感应元件2的绝缘材料主体1以及依次电连接的整流电路4、储能电路5、 比较电路6、设有发光管的驱动电路7，其中，主体l的垂直截面呈梯形，铜感 应元件2设在较宽侧的主体1内，主体1较窄侧内设带内盲孔的铜螺丝3;整流 电路4的输入端电连接铜感应元件2，输出端连接储能电路5的输入端，储能电 路5的输出端连接比较电路6的输入端，比较电路6的输出端连接驱动电路7的输入端，驱动电路7的输出端连接整流电路4输出端。整流电路4为全桥整流电路或者半桥整流电路，储能电路5内设电容为钽 电容或者超级电容，比较电路6为测量电路，发光管为发光二极管或氖泡。铜感应元件2构成的电容在高压带电部分带电时感应能量，经过整流电路4 整流为直流信号，该信号空载电压高但能量非常弱，通过储能电路5对钽电容 充电，钽电容电压不断升直到超过比较电路6设定电压V_H后导通驱动电路7 驱动发光管亮，LED发光消耗能量，钽电容电压下降低过比较电路6设定电压 V—L后，驱动电路7截止，发光管灭，构成一个闪烁循环，由此实现高压带电检 测。该闪烁循环亮的时间长度T—0N由钽电容电容量、V—H以及V—L决定， 一旦 生产完毕即固定，该闪烁循环灭的时间长度TJ)FF决定于充电时间，即高压带 电部分电压越高充电时间约短，也就是闪烁频率可以定性指示高压带电部分电 压。同时该发光管的发光可以通过光纤引出，做为其他检测装置的输入。该带 电指示器实现了完全的电气隔离，完全不需要外部的电源，大幅度提高安全性， 可靠性，减少了安装尺寸，也无需维护。上列详细说明是针对本实用新型之一可行实施例的具体说明，该实施例并非 用以限制本实用新型的专利范围，凡未脱离本实用新型所为的等效实施或变更， 均应包含于本案的专利范围中。
Claims (7)
1. 一种电场感应型高压带电指示器，其特征在于：它包括内部埋设有铜感应元件的绝缘材料主体以及依次电连接的整流电路、储能电路、比较电路、设有发光管的驱动电路，其中整流电路的输入端电连接铜感应元件，输出端连接储能电路输入端，储能电路的输出端连接比较电路的输入端，比较电路的输出端连接驱动电路的输入端，驱动电路的输出端连接整流电路输出端。
2、 根据权利要求l所述的电场感应型高压带电指示器，其特征在于：所述的 主体的垂直截面呈梯形，所述铜感应元件设在较宽侧的主体内。
3、 根据权利要求2所述的电场感应型高压带电指示器，其特征在于：所述的 主体上较窄侧设有带内盲孔的铜螺丝。
4、 根据权利要求1、 2或3所述的电场感应型高压带电指示器，其特征在于: 所述的整流电路为全桥整流电路或者半桥整流电路。
5、 根据权利要求1、 2或3所述的电场感应型高压带电指示器，其特征在于:所述的储能电路内设电容为钽电容或者超级电容。
6、 根据权利要求1、 2或3所述的电场感应型高压带电指示器，其特征在于:所述的比较电路为测量电路。
7、 根据权利要求1、 2或3所述的电场感应型高压带电指示器，其特征在于:所述的发光管为发光二极管或氖泡。
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| CNU2007200538537U Expired - Fee Related CN201083790Y (zh) | 2007-07-09 | 2007-07-09 | 电场感应型高压带电指示器 |
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| Country | Link |
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| CN (1) | CN201083790Y (zh) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975884B (zh) * | 2010-01-11 | 2012-08-08 | 四川蓝讯宝迩电子科技有限公司 | 高压带电指示器 |
| CN103308750A (zh) * | 2013-05-16 | 2013-09-18 | 厦门安达兴电气集团有限公司 | 通用型高压带电指示器 |
| CN103399196A (zh) * | 2013-07-24 | 2013-11-20 | 珠海黑石电气自动化科技有限公司 | 一种新型高压带电显示器 |
-
2007
- 2007-07-09 CN CNU2007200538537U patent/CN201083790Y/zh not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975884B (zh) * | 2010-01-11 | 2012-08-08 | 四川蓝讯宝迩电子科技有限公司 | 高压带电指示器 |
| CN103308750A (zh) * | 2013-05-16 | 2013-09-18 | 厦门安达兴电气集团有限公司 | 通用型高压带电指示器 |
| CN103308750B (zh) * | 2013-05-16 | 2015-06-17 | 厦门安达兴电气集团有限公司 | 通用型高压带电指示器 |
| CN103399196A (zh) * | 2013-07-24 | 2013-11-20 | 珠海黑石电气自动化科技有限公司 | 一种新型高压带电显示器 |
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