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液化石油气与大多数物体一样,都具有热胀冷缩的特性,它的体积膨胀系数比水还大10～16倍。温度升高10℃时,液态体积膨胀大约3～4％,温度升高到一定程度,液体就会完全充满钢瓶。而一旦钢瓶内充满液体,液体膨胀力就会直接作用于钢瓶。从理论上讲温度升高1℃,压力就急剧上升20～30个大气压。钢瓶的爆破压力一般是80个大气压。也就是说温度只须上升3、4度,钢瓶就可引起爆破。
Like most objects, liquefied petroleum gas has the characteristics of thermal expansion and contraction, and its volume expansion coefficient is 10 to 16 times larger than that of water. When the temperature is increased by 10 ° C, the liquid volume expands by about 3-4%. When the temperature rises to a certain extent, the liquid will completely fill the cylinder. Once the cylinder is filled with liquid, the liquid expansion force will act directly on the cylinder. In theory, the temperature increased by 1 ℃, the pressure rose sharply 20 to 30 atm. Burst pressure of the cylinder is generally 80 atmospheres. That is to say the temperature rise only 3,4 degrees, the cylinder can cause blasting.