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锅壳式锅炉管板的强度计算中,在计算有拉撑的平板和烟管管束区以外的平板的厚度时,须要画出假想圆,并确定这些假想圆的直径。在设计计算拉撑件的过程中,同样须要画出类似假想圆的切圆,并以这些切圆为基础画出拉撑件的支撑面(一般地,是一个平面多边形),然后确定拉撑件的支撑面积。通常确定假想圆直径和拉撑件支撑面积的方法是放样实测法。这种方法费时且不精确,在新产品设计时尤感不便。将锅壳式锅炉的强度计算进行计算机程序化设计是个好办法,我们的程序按照确定假想圆直径、拉撑件
In the calculation of the strength of a boiler-shell boiler tube sheet, it is necessary to draw imaginary circles and to determine the diameters of these imaginary circles when calculating the thickness of the flat plate outside the braces and the tube bundle area. In the process of designing the calculation of the support member, it is also necessary to draw a tangent circle similar to the imaginary circle, and draw the support surface of the support member (generally, a planar polygon) based on the tangent circles, and then determine the support The supporting area of the piece. The usual method of determining the imaginary circle diameter and the support area of the brace is by stakeout. This method is time-consuming and inaccurate, especially inconvenient in designing new products. The calculation of the strength of the boiler shell boiler computer program design is a good way, according to our program to determine the diameter of the imaginary circle,