Blowdown valve设置目的？ the objective of equipment depressurisation in an emergency is to keep the internal pressure of vessels and piping exposed to fire below the rupture pressure, as the yield stress decreases with heating. 紧急情况下设备泄压的目的是保证暴露于火灾的容器和管道当其屈服应力随着升温而减小时，将容器内部压力 保持在防爆片起爆压力以下 。 depressurising also serves to reduce the magnitude and duration of leaks that may occur as a result of mechanical failure, minimising the possibility of ignition. if ignition has already occurred depressurisation limits the fuel supply to the fire. 紧急泄压同时减小了因为设备的机械失效 /故障 而引起的泄漏量和泄漏时间，最小化了 起燃 的可能性。如果已经 起燃 ，紧急泄压会限制 - 火灾的燃料供应查看更多
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