Thank you for your attention to ZhongYuan water supply equipment [Knowledge News Information] column! The summer solstice is one of the early confirmed solar terms in the 24 solar terms. In the seventh century BC, the ancestors used Tugui to measure the sun's shadow, and determined the summer solstice. Although the summer solstice indicates that the hot summer has arrived, it is not hot yet. The temperature will continue to rise for a period of time after the summer solstice. It will be hot in about twenty or thirty days. After the summer solstice, the ground is strongly heated and the air convection is vigorous, and thunderstorms often form from afternoon to evening. ZhongYuan remind you Construction of chemical and municipal pipelines in power plants industry customer friends: the weather is hot, pay attention to heatstroke prevention! Thank you for your attention to the Gongyi Zhongyuan Innovation Pipeline Equipment Co., Ltd website (http://ceshi5.66554433.cn)!

简述旋转补偿器的综合性能特点

Time:2019/5/13 14:12:18

简述旋转补偿器的综合性能特点

  对于内压旋转补偿器,位移应力在补偿器波峰和波谷处形成塑性铰,再加上压力应力,旋转补偿器很快产生平面失稳。这就是低疲劳寿命补偿器在位移条件下平面失稳压力远低于高疲劳寿命的补偿器的根本原因。

  旋转补偿器的综合应力与其耐压强度,由标准中给出的旋转补偿器平面稳定性和周向稳定性的计算方法和评定标准可以看出,二者反映的均为强度问题。当旋转补偿器设计的许用寿命较低时,不仅其子午向综合应力较高,环向应力也比较高,使旋转补偿器局部很快进入塑性变形,导致旋转补偿器失稳。

  在预变位状态下,即补偿器位移量为许用值的1/2时,一个许用疲劳寿命为200次的补偿器,尚未达到其允许设计压力时,已经产生平面失稳;许用疲劳寿命为1000次的补偿器,达到设计压力时,补偿器处于平面稳定状态,达到1.5倍设计压力时,补偿器处于临界失稳状态;许用疲劳寿命为2000次的补偿器达到设计压力1.5倍时,旋转补偿器仍处于平面稳定状态。