Fires happen around us from time to time. There are many reasons for electrical fires in elevators, but they are mainly due to poor installation and daily maintenance of electrical equipment,

 

電氣設(shè)備在運(yùn)行中超過額定負(fù)荷，發(fā)生線路短路、過熱和打火花而造成的。因此，需要配置符合規(guī)定的消防器材。

 

When the electrical equipment exceeds the rated load during operation, it is caused by short circuit, overheating and spark of the line. Therefore, it is necessary to configure fire-fighting equipment that meets the regulations.

 

一、發(fā)生火災(zāi)的原因

 

1、 Cause of fire

 

1、設(shè)備過熱

 

1. Equipment overheating

 

引起電氣設(shè)備發(fā)熱的主要原因有：

 

The main causes of heating of electrical equipment are:

 

（1）短路；發(fā)生短路故障時(shí)，線路中的電流增加為正常時(shí)的幾倍，產(chǎn)生的熱量與電流成正比。

 

(1) Short circuit; In case of short-circuit fault, the current in the line increases several times as normal, and the heat generated is directly proportional to the current.

 

此時(shí)若溫度達(dá)到可燃物的燃點(diǎn)時(shí)，就會(huì)造成火災(zāi)。

 

At this time, if the temperature reaches the ignition point of combustibles, it will cause a fire.

 

（2）過載；過載也會(huì)引起設(shè)備發(fā)熱。造成過載有以下三種情況：一是設(shè)計(jì)選用線路和設(shè)備不合理，

 

(2) Overload; Overload can also cause heating of the equipment. There are three situations causing overload: first, the design and selection of lines and equipment are unreasonable,

 

導(dǎo)致在額定負(fù)荷下出現(xiàn)過熱；二是使用不合理，升降機(jī)長時(shí)間超負(fù)荷運(yùn)行，

 

Cause overheating at rated load; Second, the use is unreasonable, and the elevator runs overload for a long time,

 

造成線路或設(shè)備過熱；三是故障運(yùn)行，如三相電源缺一相等。

 

Cause overheating of lines or equipment; Third, fault operation, such as three-phase power supply missing one.

 

（3）接觸不良；各種接觸器觸點(diǎn)沒有足夠壓力或接觸面粗糙不平，均會(huì)導(dǎo)致觸頭過熱。

 

(3) Poor contact; The contacts of various contactors do not have enough pressure or the contact surface is rough and uneven, which will lead to overheating of the contacts.

 

（4）散熱不良；電阻器安裝不合理或使用時(shí)損壞、變形，熱量積蓄過高。

 

(4) Poor heat dissipation; The resistor is improperly installed or damaged or deformed during use, and the heat accumulation is too high.

 

2、升降機(jī)周圍存在可燃物

 

2. There are combustibles around the elevator

 

（1）升降機(jī)上的電氣線路、開關(guān)柜、熔斷器、插銷、照明器具、電動(dòng)機(jī)、

 

(1) Electrical circuit, switch cabinet, fuse, bolt, lighting appliance, motor

 

電加熱設(shè)備等電氣設(shè)備接觸或接近可燃物非常容易發(fā)生火災(zāi)。

 

Electric heating equipment and other electrical equipment are very prone to fire when they are in contact with or close to combustibles.

 

潤滑系統(tǒng)缺油，也可導(dǎo)致火災(zāi)的發(fā)生。

 

Lack of oil in the lubrication system can also lead to fire.

 

（2）升降機(jī)司機(jī)、登機(jī)檢修人員隨地拋擲的煙頭和火柴棍等易燃物，也容易造成火災(zāi)。

 

(2) Cigarette butts, matchsticks and other inflammables thrown by elevator drivers and boarding maintenance personnel are also easy to cause fire.

 

（3）在升降機(jī)進(jìn)行維修時(shí)，使用電氣焊產(chǎn)生的火花飛濺物，落在升降機(jī)上而發(fā)生的火災(zāi)。

 

(3) During the maintenance of the elevator, the sparks and splashes generated by electric welding fall on the elevator and cause a fire.

 

二、滅火方法

 

2、 Fire extinguishing method

 

電氣火災(zāi)發(fā)生后，電氣設(shè)備可能因絕緣損壞而碰殼短路，電氣線路也可能因斷落而接地短路，

 

After an electrical fire, the electrical equipment may be short circuited due to insulation damage, and the electrical circuit may also be short circuited due to disconnection,

 

使正常不帶電的金屬構(gòu)架、地面帶電，從而導(dǎo)致接觸電壓或跨步電壓的觸電。

 

Electrify the normally uncharged metal frame and ground, resulting in electric shock of contact voltage or step voltage.

 

因此，發(fā)現(xiàn)電氣設(shè)備、電氣裝置或線路及電氣設(shè)備附近著火時(shí)，設(shè)法切斷電源，

 

Therefore, in case of fire near electrical equipment, electrical devices or lines and electrical equipment, first try to cut off the power supply,

 

以防火勢蔓延和滅火時(shí)造成觸電，

 

To prevent electric shock caused by fire spreading and fire extinguishing,

 

若無法斷電時(shí)，要合理使用滅火器材滅火。

 

If the power cannot be cut off, fire-fighting equipment shall be used reasonably to put out the fire.

 

以上就是為大家介紹的有關(guān)固定升降貨梯的詳細(xì)介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù)

 

The above is a detailed introduction to the fixed lift cargo elevator. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service