Combination devices of safety valve and bursting disc
Safety valve and bursting disc devices combined pressure relief valve has both valve type and fracture type advantage, it can be used alone to prevent the safety valve leakage, but also recover the container continuous use after the emission of excessive pressure. The combined device bursting disc can be set in inlet or outlet according to different needs. The former can use the bursting disc to isolate the safety valve from the inside container gas, in case of corrosion or blockage of gas in the dirt or the stick, when the container is over-pressure, the bursting disc ruptures, safety valve is open, the container down pressure, then the valve is close, the container can continue to temporarily run, and install the disc when equipment is downtime. This structure is required the disc breaking without affecting the safety valve regular action, but also called for settings screening devices between the bursting disc and safety valve to prevent the pressure between them, to impact the disc's normal movements. When the valve disc is stalled on the outlet side, you can make disc from the gas pressure and temperature of the long-term role of fatigue damage, bursting disc is used to remedy the leakage. This structure requires the gas between bursting disc and safety valve in time discharges, or safety valve will be useless.
Combined structure safety relief valve is generally used in corrosive media, liquefied gases, or highly toxic, rare gas containers. As the safety valve device has a lag effect, can not be used inside high step-up rate of the reaction vessel.
