This article according to the known ball valve design experience to DN is 250mm, the design pressure is the 2Mpa ball valve carries on the design, mainly has included the choice of material, the structural design and the intensity examination and so on。In the structure and material aspect in satisfying under the intensity premise, reduce the structure as far as possible the complexity, by a smaller consumption, a simpler structure realizes the end product design optimization, simultaneously carries on the stress to ball valve's major component the software analysis. The province strength organization does for a task of design part, we need to choose the appropriate organization according to 's characteristic.
This design takes the given design conditions as the objective point, simultaneously according to the national valve standard is the center, with the aid of the soliderworks three dimensional software and AUTOCAD two-dimensional charting software and ANSYS analysis software has carried on the three dimensional modelling, the two-dimensional charting and stress analysis according to the design handbook's standard frame's structural style to the product, finally determined that 's structural style and province strength opening way, this will have certain reference value to the later design and research similar .
Key words：Structural design, intensity examination, stress analysis and reducing effort organization
