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在油、气、水等工程中广泛地使用圆顶方底渐变连接管。这种型式的渐变管,按底的形状可分为矩形和正方形两种;按偏心可分为双偏心、单偏心和对心三种;按倾角可分为正渐变管和斜渐变管两种。它们的展开计算方法基本上相同。圆顶方底渐变管展开的数解法,采用三角形法,即已知三角形的三条边长作三角形的方法最为简便。在有关技术资料中,几乎都是介绍图解法,介绍数解法的甚少。图解法往往由于线条近乎重叠致使作图不准
In the oil, gas, water and other projects widely used dome-bottom gradient connector. This type of gradual tube, according to the shape of the bottom can be divided into two kinds of rectangular and square; according to the eccentric can be divided into double eccentric, single eccentric and the heart of three; according to the angle can be divided into two kinds of positive and negative gradient tube . They are basically calculated in the same way. Dome of the bottom of the tube gradual expansion of the number of solutions, the use of the triangle method, that is, known as the three sides of the triangular triangle for the most convenient method. In the relevant technical information, almost all the introduction of graphic method, introduction of the number of solutions is very small. Schematics often draw inaccuracies due to the near overlap of lines