In calculating the external fire discharge capacity of pressure vessel safety valves,the calculation of the wetting area of horizontal vessels with elliptical heads still lacks a simple and accurate calculation formula.Since the petrochemical industry mostly uses 2∶1 elliptical head,in order to calculate its wetting area more accurately,it is necessary to find a method that can easily calculate the surface area of 2∶1 ellipsoidal crown.In this paper,the results obtained by mathematical methods and data fitting combined with the program approximation calculation method are verified,and a more suitable calculation formula is obtained to optimize the design of safety valves of horizontal vessels with elliptical heads under fire conditions.
关键词
椭球冠/安全阀设计/润湿面积计算/椭圆封头卧式容器/2:1椭球冠近似面积公式
Key words
ellipsoidal crown/safety valve design/wetting area calculation/horizontal vessel with elliptical head/approximate area formula for 2∶1 ellipsoidal crown
维普
万方数据