一、概述波纹管是一种圆柱形的沿圆周有波纹的薄壁金属元件。当波纹管在不太大的轴向力或压差的作用下,将产生显著的伸长或缩短。由于这一特性,它被广泛地应用于仪表与自动装置中,如气压式温度调节器、压力调节器、油量调节器、流量表、各种构造形式的气压表等,都用波纹管作为压力测量或调节的敏感元件。它还可以作导管的挠性连接、密封元件;作两 First, an overview Bellows is a cylindrical corrugated thin walled metal components along the circumference. When the bellows is not too large axial force or pressure difference, will produce significant elongation or shortening. Because of this feature, it is widely used in instrumentation and automation devices, such as pressure thermostat, pressure regulator, fuel regulator, flow meter, various forms of barometers, etc., are used as bellows Sensing element for pressure measurement or regulation. It can also be used for flexible catheter connection, sealing components; for two