充气柜从世界范围来看，充气机发展迅速，使用量急剧增加。 以德国为例，几年前对工业电网使用的中压开关设备进行了调查，当时储气罐12kV为5%、24kV为9%、36kV为19%，而根据2003年报道，储气罐为新设备的50%。

From a global perspective, inflatable lockers have developed rapidly and their usage has increased sharply. Taking Germany as an example, a few years ago, a survey was conducted on the medium voltage switchgear used in industrial power grids. At that time, the gas storage tank was 5% for 12kV, 9% for 24kV, and 19% for 36kV. According to a report in 2003, the gas storage tank accounted for 50% of the new equipment.

充气柜的结构特征

Structural characteristics of inflatable cabinets

综合看不同型号的西门子充气机，有共同的结构特点：

Taking a comprehensive look at different models of Siemens inflators, they share common structural characteristics:

1)采用固定式结构技术、免维护真空断路器技术，取代操作次数有限的中式手车式少油断路器。

1) Adopting fixed structure technology and maintenance free vacuum circuit breaker technology to replace the traditional Chinese handcart type low oil circuit breaker with limited operation times.

2)隔离开关和接地开关组合为3站开关，取代了单一开关，大幅减少了空间和联锁工作。

2) The combination of isolation switch and grounding switch forms a 3-station switch, replacing a single switch and significantly reducing space and interlocking work.

3)变流器采用环芯式变流器代替承受高价电气负载的一般注形绝缘变流器。

3) The inverter adopts a ring core inverter instead of a general injection molded insulation inverter that can withstand high electrical loads.

4)采用优良的SP6气体绝缘技术代替空气绝缘，无需各个开关元件的维护和修理作业。

4) Using excellent SP6 gas insulation technology instead of air insulation, there is no need for maintenance and repair of various switch components.

5)电缆连接采用全绝缘和防触电的插入式代替普通的电缆连接器。

5) The cable connection adopts fully insulated and anti electric shock plug-in type instead of ordinary cable connectors.

充气柜的关键技术

Key Technologies of Inflatable Cabinets

1)通过将充气柜的外壳焊接成气密式结构，排除环境因素的影响。 SF6气体的绝缘强度是空气的2.倍，从而获得了省空间的好处，减少了楼盘物的面积，取得了良好的经济效果。

1) By welding the outer shell of the gas filling cabinet into an airtight structure, the influence of environmental factors can be eliminated. The insulation strength of SF6 gas is twice that of air, which benefits from saving space, reducing the area of buildings, and achieving good economic results.

2)采用激光焊接技术，防止SF6绝缘气体流失，防止湿气入侵。 该激光焊接的充气机满足IEC60698和VDE0670第1000部分标准对气密压力系统的要求。

2) Using laser welding technology to prevent SF6 insulation gas loss and moisture intrusion. The laser welded inflator meets the requirements of IEC60698 and VDE0670 Part 1000 standards for airtight pressure systems.

3)气体的气密性由与各壳体一体化的泄漏检查装置定期检查。

3) The gas tightness is regularly checked by a leak detection device integrated with each shell.

4)必要的操作工作从充气机的外部传递到内部，通过波纹管进行。

4) The necessary operational work is transmitted from the outside to the inside of the inflator through a corrugated tube.

5)收纳在柜内的电气部件通过焊接的套筒向外连接到电缆和母线上。

5) The electrical components stored in the cabinet are connected outward to the cables and busbars through welded sleeves.

6)充气柜的动作准备状态的显示通过放入机壳内的测量盒以磁耦合的方式非接触地显示在外部。

6) The display of the action preparation status of the inflatable cabinet is non-contact displayed externally through a measurement box placed inside the casing in a magnetic coupling manner.

7)为了确认有无电压，在焊接于壳体内的套筒中浇铸电容器芯片。 在面板上安装插座，可以在外面用电压测量装置检查有无电压。

7) To confirm the presence or absence of voltage, a capacitor chip is cast into the sleeve welded inside the casing. Install sockets on the panel and use voltage measuring devices to check for voltage outside.

8)一般在壳体内焊接同种的释放装置。

8) Generally, the same type of release device is welded inside the shell.

上述结构措施保证了不受外部环境的影响，免维护及结构的紧凑性。 在充气柜的使用情况下，充气机由于其结构优势，在一般空气绝缘柜不能使用的地方，例如温度变化大，高湿环境，例如湿热带地区，高温及低温地区，例如沙漠地区和南北两地区，环境中有自然物质，例如沿海的盐雾

The above structural measures ensure that it is not affected by external environment, maintenance free, and compact in structure. In the use of inflatable cabinets, due to its structural advantages, the inflator can be used in places where general air insulated cabinets cannot be used, such as areas with large temperature changes, high humidity environments, such as humid tropical regions, high and low temperature areas, such as desert areas and northern and southern regions, where there are natural substances in the environment, such as salt spray along the coast

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