numerical simulation technology

Finite element analysis using the numerical simulation technology as a secondary pipeline ball valve design is necessary for the complex stress state, the complex process of welding technology for the design and optimization of welding process to provide a strong argument, the following parts of the design and manufacture can be Numerical simulation:

1, split body ball valve and connecting pipe stress analysis of bolt;

2, the whole pipeline welding ball valve body valve stress analysis;

3, the whole body welding process of welding temperature field distribution, the distribution of welding residual stress, welding axial deformation and radial deformation prediction, in Figure (11) below;





(A) axial deformation of the valve (b) radial deformation of the valve

Figure (k) the inherent strain method of welding deformation



4, the welding process on the support plate by the impact of state power, in Figure (12) below;





Figure (12) stress distribution of support board



5, the deformation of spherical projections, particularly for large diameter, high-pressure-level force in the media sphere that may occur under the deformation, such deformation should be controlled in the processing of roundness tolerance, Figure (13) below;





Figure (13) rated sphere elastic deformation under pressure

6, full-strength analysis of welded ball valve body, Figure (14) below;



(A) tube-type valves welded intensity (b) welded ball valves like intensity

Figure (14) Strength analysis of valve

7, the whole ball of welding the upper and lower body structure supported by the bending moment and torque bearing composite load should be stress analysis;

8, torque transmission system design failure analysis and fault;

9, ball valve gate for the rapid (<0.5 seconds) of the dynamic stress analysis of shaft; valve ball valve gate valve check valve globe valve butterfly valve
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