详解六氟化硫断路器工作原理

Detailed explanation of the working principle of six sulfur fluoride circuit breaker

国内已经有成熟的SF6气体净化再生技术，六氟化硫我国的提纯精度能达到96%，断路器的无油化真有所进步。

There is already mature SF6 gas purification and regeneration technology in our country. The purity of six sulfur fluoride can reach 96% in our country.

六氟化硫断路器采用的是自能式灭弧结构，主要是利用压气缸之内的高压热膨胀气流与碰口电弧的堵塞效应将高压气缸之中的气体压力在断路器分闸处提高。六氟化硫断路器的操作分为两种：一种是分闸操作；另外一种是合闸操作，以下是对这两种操作的介绍。

The self - energy arc extinguishing structure is used in six sulfur fluoride circuit breaker, which is mainly used to improve the gas pressure in the circuit breaker by the blocking effect of the high pressure thermal expansion air and the entrance arc in the cylinder. Six the operation of FCB can be divided into two types: one is the operation of the circuit breaker, the other is the closing operation, and the following are the introduction of the two operations.

（1）分闸操作。六氟化硫断路器的分闸操作是通过弹簧操动机构控制支座的内拐臂拉动绝缘拉杆使喷口向下，再通过主触头与静触头的分离产生一定的电弧，这些电弧通过燃烧会产生比较高的温度，随后就会产生高压气体，当高压气体流入压气缸之后会提升压气缸内的压力，压气缸之内的高压气体可以从动弧触头喉部喷出，从而熄灭电弧，达到短路的目的。

(1) sluice operation. Six the switching operation of the sulfur fluoride breaker is through the inner turning arm of the spring operating mechanism to pull the insulated pull rod to make the nozzle down, and then through the separation of the main contact and the static contact, the arc will be produced by the separation of the main contact and the static contact. These arc will produce a higher temperature by burning, and then produce high pressure gas, when the high pressure gas flows into the pressure. The pressure in the cylinder will be promoted after the cylinder, and the high pressure gas in the cylinder can be ejected from the throat of the movable arc contact, thus extinguishing the arc to achieve the purpose of short circuit.

（2）合闸操作。六氟化硫断路器的合闸操作是通过弹簧操动机构控制支座的内拐臂拉动绝缘拉杆使喷口向上运动，这样就达到了合闸的状态，然后六氟化硫气体进入压气缸之内，等待着下一次的六氟化硫断路分闸操作。

(2) closing operation. The closing operation of the six sulfur fluoride circuit breaker is to pull the insulated pull rod through the inner turning arm of the spring operating mechanism to drive the nozzle to move upwards, thus reaching the state of closing, and then six sulfur fluoride gas enters the cylinder, waiting for the next operation of the six sulfur fluoride circuit breaker.

六氟化硫断路器主要由六大部分组成，其中包括：六氟化硫断路器的导电部分、六氟化硫断路器的灭弧单元、六氟化硫断路器的绝缘部分、六氟化硫断路器的附属连接装置和六氟化硫断路器的电气控制与操动结构。按照六氟化硫断路器的结构组成，六氟化硫断路器可以分为两种断路器：一种是罐式高压六氟化硫断路器；另外一种是瓷柱式六氟化硫断路器。

The six sulfur fluoride circuit breaker consists of six main parts, including the electrical part of six sulfur fluoride circuit breaker, the arc extinguishing unit of six sulfur fluoride circuit breaker, the insulation part of the six sulfur fluoride circuit breaker, the accessory connecting device of the six sulfur fluoride circuit breaker and the pneumatic control and operating structure of the six FF circuit breaker. According to the structure of six sulfur fluoride circuit breaker, six sulfur fluoride breakers can be divided into two kinds of circuit breakers: one is tank type high pressure six sulfur fluoride circuit breaker, and the other is porcelain column type six sulfur fluoride circuit breaker.

两种六氟化硫断路器有着自己的特点和操作方式，其中罐式高压六氟化硫断路器可以将隔离开关、断路器等组合在一起，组合成敞开式组合电器，这样就能够减少占地面积，同时还能减少检修的时间，这样的六氟化硫断路器非常适合新疆地区使用，因为罐式高压六氟化硫断路器对于环境的适应能力特别强，新疆地区的自然环境比较恶劣，一般的六氟化硫断路器在实际的使用中非常容易出现故障，而罐式高压六氟化硫断路器在新疆地区使用时很少发生故障，保障了新疆电力的安全。但是瓷柱式六氟化硫断路器也有一定的优点，瓷柱式六氟化硫断路器安装的过程比较简单，也能够在一定程度上节约经济成本，但是瓷柱式六氟化硫断路器的抗震性能不是很强，重心也比较低，这就会导致瓷柱式六氟化硫断路器只能在一些地区使用，所以新疆地区不会使用这种类型的六氟化硫断路器。

Two kinds of six sulfur fluoride circuit breakers have their own characteristics and operation mode, in which the tank type high pressure six sulfur fluoride circuit breaker can combine the isolation switch, circuit breaker and so on, combined into open type assembly, so that the area can be reduced and the time for maintenance can be reduced, so the six sulfur fluoride circuit breaker is not. It is often suitable for the use in Xinjiang area, because the tank type high pressure six sulfur fluoride breaker is especially good for the environment, and the natural environment in Xinjiang is very bad. The general six sulfur fluoride circuit breaker is very easy to fail in the actual use, and the tank type high pressure six sulfur fluoride circuit breaker is rarely used in the Xinjiang area. The safety of Xinjiang electric power is guaranteed by the failure of birth. But porcelain column type six sulfur fluoride circuit breaker also has some advantages. The installation process of porcelain column type six sulfur fluoride circuit breaker is relatively simple, and it can also save economic cost to a certain extent. However, the aseismic performance of the porcelain column type six sulfur fluoride circuit breaker is not very strong and the center of gravity is also low, which will lead to the porcelain column type six sulphur fluoride breakage circuit breakage. The device can only be used in some areas, so this type of six FCB circuit breaker will not be used in Xinjiang area.