Corrugated pipes are formed from cylindrical thin-walled pipes into ring-shaped or other corrugated pipes. The inner diameter or outer diameter of the bellows is used as the basic size. When the inner diameter or outer diameter is determined, the wall thickness, pitch, wave thickness, etc. are based on the inner diameter or outer diameter. Determine according to appropriate proportion
The wave pattern of metal bellows refers to the form and shape of the corrugations after being cut along the axial direction. The wave shape affects the stiffness, displacement and pressure-bearing capacity of the bellows. It can be divided into types according to geometry.
Wave pitch and wave width of metal bellows
Wave pitch refers to the distance between two waves. The wave pitch increases with the increase of the inner diameter, but the percentage of the inner diameter after the wave pitch decreases with the increase of the inner diameter
The wave width refers to the maximum width of the outer corrugation part axially, and the wave width is based on the influence of the wave crest and the radius of the wave. , when the wave distance and wave width are determined, the wave crest and the radius of each wave are also determined
Wave number and effective length
The total axial length of the corrugated part of the bellows and the effective length of the bellows, the wave number and the effective length Length is two parameters that are closely related. In order to ensure the stability of the bellows when working, the relationship between the effective length and the outer diameter is greater than or equal to
If a long effective length is required, two or more can be used When the bellows is welded, in order to ensure its structural stability, guide parts must be installed
Metal corrugated pipes are widely used