双法兰液位计安装方式的改革

The Reform of the Installation Mode of Double Flange Level Gauge

笔者所在中粮生化能源有限公司建厂时采用玉米浆蒸发器,其进料方式为顶部进料,物料带有一定压力,切线方式进入。当初设计时采用的液位计是双法兰平膜片式恒河EJA118W差压式液位计,安装方式为紧贴罐壁焊接法兰,在使用过程中,经常发生双法兰液位计的上部膜片破损故障,既增加维修费用,又严重影响工艺运行的稳定。因为液位计显示不对,导致蒸发器自动进料阀失控,致使实际液位显示偏高,溢出物料,堵塞蒸发器。经过长期研究和总结,笔者将液位计的安装方式进行改革,将紧贴罐壁的法兰用DN80的钢管两端焊接DN80的法兰,进行延长过渡,同时在钢管内部焊接了筛网,这样改造之后,已经使用3年,未发生双法兰膜片损坏故障,彻底解决故障。

The author of the COFCO Biochemical Co., Ltd. in the construction of corn pulp evaporator, the feeding method for the top of the feed, the material with a certain pressure, tangential way to enter. The design level used in the original design is double flange flat diaphragm Gyraz EJA118W differential pressure level gauge, the installation method is close to the tank wall welding flange, in the course of the use of double flange level gauge of the upper diaphragm damage failure, both to increase maintenance costs, but also seriously affect the stability of the process operation. Because the level gauge shows wrong, resulting in evaporator automatic feed valve out of control, resulting in the actual level display is high, overflow material, plug the evaporator. After long-term research and summary, I will adjust the installation of the level gauge, will be close to the tank wall flange DN80 at both ends of the flange welding DN80 flange, the extension of the transition, while welding in the steel pipe, This transformation has been used for 3 years, did not occur double flange film damage failure, completely solve the problem.