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 閥門填料處的泄露處理辦法

閥門填料處的泄露處理辦法

作者:admin????來源:????發布時間:2020-08-08 09:44????瀏覽量:
 閥門填料處的泄露處理辦法
Leakage treatment of valve packing
 
一、 產生原因:
        Causes:
 
1、操作不當,用力過猛等;
     Improper operation, excessive force, etc;
 
2、壓蓋、螺栓、和其他部件損壞,使壓蓋無法壓緊;
     The gland, bolts and other parts are damaged, which makes the gland unable to be pressed tightly;
 
3、壓蓋歪斜,壓蓋與閥桿間空隙過小或過大,致使閥桿磨損,填料損壞。
     The gap between the gland and the valve stem is too small or too large, resulting in valve rod wear and packing damage.
 
4、填料安裝不對,存在著以小代大、螺旋盤繞接頭不良、上緊下松等缺陷;
     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、填料選用不對,不耐介質的腐蝕,不耐閥門高壓或真空、高溫或低溫的使用;
      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、填料超過使用期,已老化,喪失彈性4、閥桿精度不高,有彎曲、腐蝕、磨損等缺陷5、填料圈數不足,壓蓋未壓緊;
     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、預防、排除方法:
       Methods of prevention and elimination:
 
1、應按工況條件選用填料的材料和型式;
     The material and type of packing should be selected according to the working conditions;
 
2、使用期過長、老化、損壞的填料應及時更換;
     The fillers with long service life, aging and damage shall be replaced in time;
 
3、損壞的壓蓋、螺栓及其他部件,應及時修復或更換;
     Damaged gland, bolt and other parts shall be repaired or replaced in time;
 
4、應遵守操作規程,除撞擊式手輪外,以勻速正常力量操作;
     Besides the impact handwheel, it should be operated with constant speed and normal force;
 
5、閥桿彎曲、磨損后應進矯直、修復,對損壞嚴重的應及時更換;
     The valve rod should be straightened and repaired after bending and wear, and the seriously damaged valve rod should be replaced in time;
 
6、按有關規定正確的安裝填料,盤根應逐圈安放壓緊,接頭應成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、填料應按規定的圈數安裝,壓蓋應對稱均勻地把緊,壓套應有5mm以上的預緊間隙;
     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、應均勻對稱擰緊壓蓋螺栓,壓蓋與閥桿間隙過小,應適當增大其間隙;壓蓋與閥桿間隙過大,應予更換。
     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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