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田湾核电站一期工程2台机组的汽轮机主调阀阀位监测装置由俄制(俄罗斯制造)电磁式仪表及其安装支架组成,仪表和阀门之间采用了刚性连接方式。因仪表和阀门之间的刚性连接方式易导致仪表磨损严重、阀位仪表杆因仪表与阀门的连接杆的晃动易被拉弯或者拉断。通过使用高精度(1%误差精度)、稳定性好的LVDT(线性电压差动传感器)替代俄供阀位仪表,对仪表和阀门之间采用两自由度连接方式对原阀位监测装置进行了改造,取得了良好的应用效果,对国内、外同类型装置的应用,具有一定的借鉴意义。
Tianwan Nuclear Power Station Phase II project 2 sets of turbine main valve position monitoring device from the Russian (made in Russia) electromagnetic instruments and mounting bracket components, instrumentation and valves with a rigid connection between the way. Due to the rigid connection between the meter and the valve easily lead to instrument wear and tear, the valve rod rod due to instrument and valve connecting rod is easy to be bent or pulled off. By using high precision (1% error precision), good stability of the LVDT (linear voltage differential sensor) to replace the Russian valve position meter, the instrument and the valve between the two degrees of freedom connected to the original valve position monitoring device Transformation, and achieved good results, the application of the same type of device at home and abroad, has some reference.