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防爆電子秤是如何防爆
點擊次數(shù):1064 更新時間:2014-11-25
 

防爆電子秤是如何防爆

防爆電子秤是一種采取了多種防爆隔爆技術(shù),使電子秤能夠在容易發(fā)生爆zha的危險環(huán)境下正常工作的特殊電子秤,那么具體它是如何防爆的呢?又有哪些防爆技術(shù)、型式呢?

大家都知道的,爆zha要發(fā)生需要滿足三個條件,1:存在爆zha性物質(zhì);2:存在助燃性物質(zhì);3:存在引燃源,只有這三個條件同時滿足了才有可能發(fā)生爆zha,缺一不可。既然知道了爆zha發(fā)生的條件就可以從根本上來防止爆zha,從爆zha物上來控制是顯然不行的,因為通常易爆物品通常都為產(chǎn)品,不可能將產(chǎn)品隔離;從助燃物上控制也是不行的,氧氣是zui常見的助燃物,這個也不好隔離;那么剩下的就是從引燃源來控制了。

防爆電子秤的防爆類型有隔爆型、本安型和油浸型等。隔爆型是在設(shè)計電子秤時將可能會產(chǎn)生火花或者電弧這樣的引燃源的零部件全部置放于隔爆殼內(nèi),使得隔爆殼內(nèi)的的空間和外部隔開,也有的氣體或粉塵爆zha物會通過隔爆殼的縫隙滲透進(jìn)電子秤內(nèi),這時候如果發(fā)生爆zha,隔爆殼可以將爆zha控制在內(nèi)部,同時通過隔爆殼內(nèi)特殊設(shè)計的間隙結(jié)構(gòu)可以降低火焰?zhèn)鞑サ乃俣?、并且將火焰熄滅在電子秤?nèi)部,外部的爆zha性物質(zhì)也就不會因此而被引爆,從而達(dá)到隔爆的效果。采用這種防爆技術(shù)的多為電子地磅、電子地秤這樣接口豐富的電子秤。

 

 

 
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