无论是天然气，液化气的气体还是煤基气体，泄漏后由于各种原因泄漏，当室内气体浓度超过较低的爆炸极限时，火（较轻，电气开关，静电等）必须爆炸。天然气中毒为何？中国城市的人工煤气体具有不同的组成部分，但它们都含有更多的一氧化碳。例如，哈尔滨气体含有一氧化碳13，上海气体含有一氧化碳19，青岛气体含有一氧化碳，秦皇岛气体含有一氧化碳高达30.众所周知，一氧化碳是一种高毒性气体。在空气中有一氧化碳1的人中，它在10分钟内产生痰液，将在半小时内死亡。因此，当煤气泄漏时，存在爆炸的危险，有一氧化碳中毒（直接中毒）存在危险。此外，当使用燃气加热器或煤炉和通风差时，可能会发生一氧化碳中毒（废气中毒）。爆炸极限较低的是什么？也就是说，空气中爆炸的最低浓度，警报浓度设定在爆炸极限下的1/4以下。例如：甲烷（天然气的主要成分）爆炸下限5.0（50000ppm）丙烷（液化气燃气主要成分）爆炸下限2.0（20000ppm）氢气（煤气主要成分）爆炸下限4.0（40000ppm）气体 leakage reasons Any family, no matter how you pay attention, may have a case. Among them, the ignition failure, the pot or the wind blows out, the flame is extinguished in the middle, and the total valve is not strict, which accounts for more than 70% of the leakage. Why does the alarm know the gas leak? The core of the gas alarm is the gas sensor, commonly known as the "electronic nose." This is a unique resistance. When "smell" to gas, the sensor resistance changes with the gas concentration. When the gas reaches a certain concentration, the sensor can sound and light alarm when the resistance reaches a certain level. What is the sound and light alarm? When the gas leakage causes the indoor concentration to reach the alarm concentration, the red indicator light of the alarm light is on, and the buzzer sounds "Bai-Di-", so it is called sound and light alarm. Why does the gas alarm have an expiration date? The quality of the sensor is not good, and the performance is generally reduced in 1-2 years, thus losing the safety of the alarm. Alarms in other electronic components (such as transformers, capacitors, transistors, etc.) have a limited life span, so even advanced countries have a valid period of up to five years. To ensure safety, a new alarm must be replaced after five years of expiration.
