弧触头

The improved electrode can produce stronger axil magnetic field and the axial magnetic flux density at contact edge was similar to maximum value.

对铁芯式两极纵磁真空灭弧室触头间隙的纵向磁场和铁芯中涡流进行了数值分析，根据分析结果，对触头结构进行了改进。

A great number of experiments are conducted in demountable vacuum chamber with various electrode structures. And the peak value of applied current varies from 1kA to 30kA.

本文在可拆卸式灭弧室中对所设计的各种触头进行了大量的实验，实验电流的峰值为1kA至30kA。

To assess the condition of arc quenching chamber of circuit breaker without disassembly itself, Dynamic Resistance Measurement is introduced in this paper.

介绍了一种不用打开灭弧室就可以评估断路器灭弧室状况的方法———动态电阻测量法，用此法很容易判断弧触头的烧损数值。

The design includes three parts:The design of the contact system,the design of the system of arc-extinct and the design of electromagnetism system..

本次设计包括三部分：触头系统的设计、灭弧系统的设计、电磁系统的设计。

Vacuum interrupter is the core of high voltage vacuum switch. Because of the long contact gap, the axial magnetic field contact is widely used to generate stronger and evener AMF in the contacts' gap. It can reduce arc current density and arc energy, so its interrupting performance is improved.

高压真空开关的核心部件之一是真空灭弧室，由于其触头开距较大，因此多采用纵向磁场触头，希望触头间隙有较强且较均匀的纵向磁场，这样可降低电弧电流密度，降低电弧能量，从而提高开断性能。

Electrode contour optimization of arc quenching chamber of a 550 kV 1-break extra high voltage SF6 circuit breaker using the VIGA was carried out to obtain not only a uniform electric field but also a dynamic distribution of electric field strength along different surfaces of electrode and shielding cover.

以550 kV单断口SF6断路器灭弧室为研究对象，进行触头结构优化设计，得到灭弧室内部各触头及屏蔽罩沿面电场分布。

The main principle of the DCcontactor:The electromagnetism coil switches on electricity thetitle iron to match with the iron heart on,the suction of theelectromagnetism system overcomes the counterforce of the springarouses the action of the contact, the main electric circuitconnected;The electromagnetism coil cuts the power the counterforceof the spring arouses the title iron from move to open, the headcontact breaks to open the output electricity arc give or get anelectric shock in drive to arc-extinct-chamber and made longer,thestrong cooling dissociates and put out,the main electric circuitcuts off.

接触器的主要原理：电磁线圈通电，衔铁和铁心吸合，电磁系统的吸力克服弹簧的反作用力带动动触头与静触头接触，主电路接通；电磁线圈断电，弹簧的反作用力带动衔铁和动触头弹开，触头断开产生的电弧在灭弧室中受到磁吹灭弧和电动力驱动被拉长，并强烈冷却去游离而熄灭，主电路切断。

Through technical improvement of design of 550 kV/63 kA double-break and 363 kV/50 kA single-break circuit breaker, making use of computer analysis, increasing of the rated pressure of SF6 gas and opening velocity, improving the shape of arcing contact and nozzle, optimizing the structure of interrupter , 550 kV/50 kA single-break dead-tank circuit breaker is developed.

通过对550kV/63kA双断口断路器和363kV/50kA单断口断路器技术加以改进，利用计算机解析技术，提高了额定SF6气体压力和分闸速度，对弧触头和喷口形状进行了改进，优化了灭弧室结构，从而开发出550kV/50kA单断口罐式断路器样机。

WVS vacuum circuit breaker can use the R-shaped contact terminal which adopts the unique axial magnetic structure in the world, with independent intellectual property rights.

WVS型真空断路器使用具有自主知识产权的国际上独一无二的纵磁结构的R触头，使用R触头并经过电磁场优化设计的真空灭弧室具有以下优点

Saddle shaped AMF can produce a radial expanding force, which has more effective effect on resisting the pinch effect of self-generated azimuthal magnetic field of arc current. This effect of saddle shaped AMF can keep vacuum arc in diffuse mode under much higher current. So the limiting current interruption capacity of vacuum interrupter can be enhanced.

为了进一步提高纵向磁场对真空电弧的控制作用，本文提出在真空灭弧室的触头间引入从触头中心向边缘逐渐增强的非均匀纵向磁场，马鞍形纵向磁场会对真空电弧产生一个径向扩张力，而纵向磁场分布的合理设计可以使这一扩张力进一步抑制真空电弧自生环向磁场对电弧的箍缩作用，从而使真空电弧在更大的电流时仍能保持在扩散态，使真空灭弧室的极限电流开断能力得以提高。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。