防爆电机的类型 Type of explosion-proof motor

防爆电机防护等级比较低为 IP55，而普通电机有 IP23、IP44、IP54、IP55、IP56不等，故而从外形可以分辨出。

The protection grade of explosion-proof motor is lowest IP55, and ordinary motor has IP23, IP44, IP54, IP55, IP56, so it can be distinguished from the shape.

1、按电机原理分 According to the principle of motor

可分为防爆异步电机、防爆同步电机及防爆直流电机等。

It can be divided into explosion-proof asynchronous motor, explosion proof synchronous motor and explosion proof DC motor and so on.

2、按使用场所分 According to the use of places

可分为煤矿井下用防爆电机及工厂用防爆电机。

It can be divided into coal mine explosion-proof motor and explosion-proof motor used in factory.

3、按防爆原理分  According to the principle of explosion protection

隔爆型电机、增安型电机、正压型电机、无火花型电机及粉尘防爆电机等。

Flameproof motor, increase safety type motor, positive pressure motor, spark free motor and dust proof motor and so on.

4、按配套的主机分 according to the matching host

可分为煤矿运输机用防爆电机、煤矿绞车用防爆电机、装岩机用防爆电机、煤矿局部扇风机用防爆电机、阀门用防爆电机、风机用防爆电机、船用防爆电机、起重冶 金用防爆电机及加氢装置配套用增安型无刷励磁同步电机等。此外，还可以按额定电压、效率等技术指标来分，如高压防爆电机、高效防爆电机、高转差率防爆电机 及高起动转矩防爆电机等。

Can be divided into coal conveyer with explosion-proof motor, mine winch with explosion-proof motor, explosion-proof motor, rock loading machine for mine local fan motor, explosion-proof valve with explosion-proof motor, fan motor, marine explosion-proof explosion-proof motor, explosion-proof motor and hydrogenation device supporting heavy metallurgy with increased safety brushless excitation synchronous motor. In addition, it can also be classified according to the rated voltage, efficiency and other technical indicators, such as high-voltage explosion-proof motor, high efficiency explosion-proof motor, high slip motor, and high starting torque and explosion-proof motor.

防爆的基本原理  The basic principle of explosion protection

爆炸的概念  the concept of explosion

爆炸的概念: 爆炸是物质从一种状态，经过物理或化学变化，突然变成另一种状态，并放出巨大的能量。急剧速度释放的能量，将使周围的物体遭受到猛烈的冲击和破坏。 爆炸必须具备的三个条件：

The concept of explosion: an explosion is a state from a state of physical or chemical changes that suddenly become another state and release a huge amount of energy. The energy released by a sharp speed will cause a violent impact and destruction of the surrounding objects. The three conditions that the explosion must have:

①、爆炸性物质 An explosive substance

能与氧气（空气）反应的物质，包括气体、液体和固体。（气体：氢气，乙炔，甲烷等；液体：酒精，汽油；固体：粉尘，纤维粉尘等。

A substance that can react with oxygen (air), including gases, liquids and solids. (gas: hydrogen, acetylene, methane, etc.; liquid: alcohol, gasoline; solid: dust, fiber dust and so on.

②氧气 Oxygen.

空气。

air.

③点燃源 Ignition source

包括明火、电气火花、机械火花、静电火花、高温、化学反应、光能等。

It includes open fire, electrical spark, mechanical spark, electrostatic spark, high temperature, chemical reaction, light energy and so on.