The performance of bursting disc
It uses blasting devices fracture at a higher pressure and discharges gases (thereinto: the bursting disc is used for the middle and low pressure containers, blasting caps are used for ultra-high pressure containers).
（1）Advantages: good sealing performance, without leakage when the container is working regularly; the bursting disc bursting speed is fast, so relief pressure response is faster; if medium contains oil and other debris, it will not affect the acting pressure of the device components.
（2）Disadvantages: After the completion of the pressure relief action, blasting component can be not used, once the container exceeds pressure, it would have been forced to stop running; blasting component should be in a long period of high stress state, it is susceptible to premature failure due to fatigue, and therefore component life is short, need to be changed regularly. In addition, pressure blasting action component is not easy to accurately predict and strictly controlled.
（3）Applicable scope: it should be used inside a sharp pressure increase chemical reactions, or the container that media with the highly toxic, it is not applicable to the liquefied gas storage tanks. To larger pressure fluctuations, which have many opportunities to over-pressure containers are also not appliable to use.
