气动调节阀在尿素装置调节液位、压力、温度等参数中大量使用,许多重要参数如氨水液位、合成塔水位调节等都是通过气动调节阀来实现。随着时间的推移,部分调节阀的定位器逐渐老化,造成阀门线性差,甚至出现波动的情况,严重威胁正常的生产。经过研究最终确定了机械定位器改造为智能定位器的方法,取得了很大成果,为定位器老化引起的问题提供了解决途径。 Pneumatic control valve in the urea plant to adjust the level, pressure, temperature and other parameters in the extensive use of many important parameters such as ammonia level, the synthesis tower water level regulation are achieved through the pneumatic control valve. As time goes by, some of the regulating valve positioners gradually aging, resulting in poor linearity of the valve, or even fluctuations in the situation, a serious threat to normal production. After the research finally determined that the mechanical positioner is transformed into the intelligent positioner, the great achievement has been achieved, which provides a solution to the problems caused by the aging of the positioner.