U-shaped Bellows

U-shaped bellows are tubular elastic elements with a wavy shape. It is composed of several ripples, each of which is made up of two arcs with opposite normal curvatures. The ripples are connected by rotation angles, forming a structure composed of several "U" -shaped curved sections. Its structural parameters include inner diameter, convolution depth, convolution pitch, wall thickness, length and wavenumber, etc., and it has obvious one-dimensional periodic structural characteristics. Commonly used materials include metallic materials such as austenitic stainless steel and high-temperature alloy steel, as well as non-metallic materials like polytetrafluoroethylene (PTFE) and polyvinyl chloride (PVC). The selection of materials is mainly determined by factors such as the corrosiveness of the medium used, temperature, and pressure. U-shaped corrugated pipes achieve shock absorption by compensating for the cyclic deformation of metal corrugations. Their load-bearing capacity and deformation compensation capacity cause Ω -shaped corrugated pipes. In valve applications, U-shaped bellows can withstand greater pressure and earthquakes and are often used in high-temperature, high-pressure and other bellows working conditions.

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