Stress issues of the fixing brackets on both sides of the pipeline compensation bend
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1. Should fixed brackets or axial limit brackets be used on both sides of the pipeline compensation bend? 2. When using support frames, I wonder if anyone has considered this: large-diameter thin-walled pipes may generate significant bending moments at the welds of the pipes mounted on the frames, resulting in stress levels that exceed the allowable limits. How can this be determined? 3. When the two sides of a pipe compensation bend are subjected to the same external loads, the axial restraint frame does not experience any bending moment, resulting in lower local stresses compared to a fixed frame. 4. If fixed brackets are used on both sides of the pipeline compensation bend, in order to prevent the fixed brackets from experiencing large bending moments, should guide brackets be installed on either side of them? Seeking advice from experts!
1. Fixtures are generally recommended on both sides of pipe compensation bends, as they can provide stable support and fixing points for the piping system. However, in special cases, the use of an axial limit frame can also be considered, especially when it is necessary to restrict the movement of the pipe in a certain direction. 2. When using a fixing frame, it is indeed necessary to consider the high stress that may occur at the welds of thick-walled pipes with large diameters. This can be determined by conducting detailed stress analysis, including methods such as finite element analysis, to ensure that the stress at the welds does not exceed allowable values. 3. Indeed, using axial retaining frames can prevent the generation of bending moments on both sides of the pipe compensation bend, thereby reducing local stresses. If high requirements are placed on pipeline safety and stability, this method can be considered. 4. If a fixing frame is still used, guide frames can be installed on both sides of it; this helps to distribute the bending moment exerted on the fixing frame, thereby reducing stress concentration in it and enhancing the overall stability of the pipeline. The placement of the guide frame should be determined based on detailed engineering analysis and stress calculations to select the most suitable location and specifications. .