两级式呼吸阀能保证油罐呼吸安全

Two-step Breathing Valve Can Ensure the Safety of Oil Tank

对油罐三种特殊呼吸的气量供需情况进行了计算与分析,结果表明,因罐内气体温度急降引起的油罐定压呼吸所需气量与现用呼吸阀通气量之间的差值很大,由此产生的负压造成油罐塌陷。介绍了一种能适应油罐各种呼吸要求的新型两级式呼吸阀,当罐内压力快速变化时,该阀可快速全开,能很好地适应油罐的各种呼吸要求,可为油罐安全呼吸提供可靠保障。

The calculation and analysis on three special breathing rates of air flow of oil tank have been made. The results have shown that for the air temperature under abrubt reduction condition,the value difference between the breathing under the stand pressure and the rate of air flow supplied is too big,which leads to pressure dropping and results in collapse of oil tank. This paper introduces a new two-step breathing valve which can meet all requirements of the tank's breathing. When internal pressure of the tank changes abruptly,the valve may completely open quickly to satisfy all requirements of the tank's breathing. So it can ensure the safety of the tank's breathing.