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 阀门填料处的泄露处理办法

阀门填料处的泄露处理办法

作者:admin    来源:未知    发布时间:2020-08-08 09:41    浏览量:
 阀门填料处的泄露处理办法
Leakage treatment of valve packing
 
一、 产生原因:
        Causes:
 
1、操作不当,用力过猛等;
     Improper operation, excessive force, etc;
 
2、压盖、螺栓、和其他部件损坏,使压盖无法压紧;
     The gland, bolts and other parts are damaged, which makes the gland unable to be pressed tightly;
 
3、压盖歪斜,压盖与阀杆间空隙过小或过大,致使阀杆磨损,填料损坏。
     The gap between the gland and the valve stem is too small or too large, resulting in valve rod wear and packing damage.
 
4、填料安装不对,存在着以小代大、螺旋盘绕接头不良、上紧下松等缺陷;
     The packing is not installed properly, and there are some defects, such as replacing the big with the small, the spiral winding joint is not good, and the tightening is loose;
 
5、填料选用不对,不耐介质的腐蚀,不耐阀门高压或真空、高温或低温的使用;
      Packing selection is not correct, not resistant to medium corrosion, not resistant to valve high pressure or vacuum, high temperature or low temperature use;
 
6、填料超过使用期,已老化,丧失弹性4、阀杆精度不高,有弯曲、腐蚀、磨损等缺陷5、填料圈数不足,压盖未压紧;
     4. The precision of the valve stem is not high, there are bending, corrosion, wear and other defects; 5. The number of packing rings is insufficient, and the gland is not compacted;
 
二、预防、排除方法:
       Methods of prevention and elimination:
 
1、应按工况条件选用填料的材料和型式;
     The material and type of packing should be selected according to the working conditions;
 
2、使用期过长、老化、损坏的填料应及时更换;
     The fillers with long service life, aging and damage shall be replaced in time;
 
3、损坏的压盖、螺栓及其他部件,应及时修复或更换;
     Damaged gland, bolt and other parts shall be repaired or replaced in time;
 
4、应遵守操作规程,除撞击式手轮外,以匀速正常力量操作;
     Besides the impact handwheel, it should be operated with constant speed and normal force;
 
5、阀杆弯曲、磨损后应进矫直、修复,对损坏严重的应及时更换;
     The valve rod should be straightened and repaired after bending and wear, and the seriously damaged valve rod should be replaced in time;
 
6、按有关规定正确的安装填料,盘根应逐圈安放压紧,接头应成30℃或45℃;
     The packing should be installed correctly according to the relevant regulations. The packing should be placed and compacted one by one, and the joint should be at 30 ℃ or 45 ℃;
 
7、填料应按规定的圈数安装,压盖应对称均匀地把紧,压套应有5mm以上的预紧间隙;
     The packing should be installed according to the specified number of turns, the gland should be tightened symmetrically and evenly, and the pressing sleeve should have a pre tightening clearance of more than 5mm;
 
8、应均匀对称拧紧压盖螺栓,压盖与阀杆间隙过小,应适当增大其间隙;压盖与阀杆间隙过大,应予更换。
     The gland bolts should be evenly and symmetrically tightened. If the clearance between the gland and the valve stem is too small, the clearance should be appropriately increased; if the clearance between the gland and the valve stem is too large, it should be replaced.
 
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