扇形段控制阀块国产化改造

Domestic Reform of Control Valve Block in Automatic Strand Taper Control Segment

由于扇形段轻压下控制阀块为进口件,存在价格高、备件供货周期长且不能修复使用等问题,采用安装成品梭阀、提高节流孔的加工精度、确保插装阀与阀块螺纹的配合间隙、保证螺塞的互换性等措施对阀块进行国产化改造。改造后的阀块质量稳定,运行可靠,年节约备件费用20余万元。

The imported valve block of ASTC segment has such defects as high price, long period for preparation of spare parts and unable to repair any more and so on. By using the shuttle valves, improving the machining precision of the orifices, ensuring the fit clearance of cartridge valve and valve block thread and the intercbangeability of tbe plug screws and so on, the valve block can be successful manufactured domestically. The high reliable quality and stable operation of the domestic made valve block meets all the technical requirements and as a result save the cost to 0.2 million Yuan annually.