The reason for the calculation of the valve wall thickness

                   Valves are components of pressure pipelines. The valve body and valve cover bear the pressure of the medium in the pipeline. Therefore, the valve design must meet the relevant standard requirements, and then be verified using the strength theory calculation method. The calculation method of the wall thickness of the valve body is related to its shape. Different types of valve bodies have different shapes. A valve body is often composed of several shapes. Even if the shape is the same, the size is not the same. The valve body is round at both ends of the channel, but the middle cavity is oval. The valve body of the medium pressure and high pressure gate valves is circular, but the inner diameter of the circle is different. It is said that the calculation of a valve body should be performed separately according to its shape and size, but it is not necessary to calculate it in practice, because separate calculation is more complicated, and in a valve body, it usually does not take a few Different wall thicknesses. In addition, it should be noted that in addition to considering the strength of the valve body wall thickness, the stiffness should also be considered, otherwise the phenomenon of damage due to force deformation will also occur.

For this type of cylindrical valve body, it is usually counted as a thin-walled or thick-walled container, that is, when the ratio of the outer diameter to the inner diameter is less than 1.2, it is counted as a thin wall, and when it is greater than 1.2, it is counted as a thick wall. In fact, low-pressure and medium-pressure valves generally use thin-walled formulas, while steel high-pressure valves sometimes use thick-walled calculations.