弹簧管是一种制造简单、应用广泛、历史悠久的测压弹性元件。关于弹簧管敏感段末端的位移、拉力及弹簧管内的应力等等,已有不少计算方法。但是,即使采用比较准确的计算方法,仍有较大的误差。由于制造工艺上的某些原因,实际的元件总是与理想的简化图形有出入,而且成型后的壁厚也不可能是完全均匀的。对园心角来说,往往有过渡园孤。从材料方面来说,弹性模数,泊桑比也会有波动,甚至对每个元件本身来说,各点的数值也不可能是完全一致的。应该指出,由于实际结构的原因,设计整个仪表时所取位移和拉力的点,往往并不是弹簧管敏感段的末端。对100～2500Kgf/cm~2的钢制中压和高压弹簧管来说,两点 Spring tube is a manufacturing simple, widely used, a long history of compression and elastic components. There are a lot of calculation methods about the displacement of the sensitive end of the spring tube, the pulling force and the stress in the spring tube. However, even with a more accurate method of calculation, there are still large errors. Due to some manufacturing process reasons, the actual components always differ from the ideal simplified figure, and the formed wall thickness may not be perfectly uniform. On the heart of the garden, there is often a transition park alone. From a material point of view, the elastic modulus, Poisson’s ratio will fluctuate, even for each component itself, the value of each point can not be exactly the same. It should be noted that, due to the actual structure, the point of displacement and tension taken during the design of the entire instrument is often not the end of the spring-sensitive section. For 100 ~ 2500Kgf / cm ~ 2 steel medium and high pressure spring tube, two points