Pulsation damper for attaching at pressure side of pump to attenuate pressure pulse initiated by piston pump, has extension cell comprising concave shaped inner pipe and convex shaped outer pipe and formed between inner spaces

摘要

The damper has an extension cell (8) hermetically separating inner spaces (3) from a promoted pressure unit. The extension cell has spring-elastic property such that volume of the inner spaces is pressure-dependent variable. The extension cell comprises a concave shaped inner pipe (1) and a convex shaped outer pipe (2) and formed between the inner spaces. A wall of the inner and outer pipes comprises a shaft contour in cross-section, where the shaft contour is uniformly distributed over pipe periphery. The shaft contour of the inner and outer pipes is made by stamping of thin sheet metal.