Methods and Measures of Valve Self-inspection
Classification:
Release Time：2021-03-09
Countermeasures for Flange Leakage For the leakage problem at the valve flange connection, the following situations need to be analyzed in detail: ① If the gap at the flange is relatively small and the leakage is relatively small, you can directly install the bolt-dedicated additive joint on the removed bolt, tighten the nut, install the injection bolt, and embed the copper wire or packing into the flange In the gap, a new sealed cavity is formed, and then sealant is injected into it. ② If the gap at the flange connection is relatively large, it is necessary to use a convex clamp during processing. The injection hole is designed in the middle of the two flange connection bolts to stagger the position of the bolts. In order to prevent the leakage of the medium, you can also Use compressed air to purge the leaked medium to one side. ③ If there is leakage at the large diameter flange connection, then it is necessary to use local pressure plugging method, fix it with a fixture, and then inject sealant from the local to effectively eliminate the dynamic leakage point. Countermeasures for valve body leakage When there is a problem of valve body leakage, it is necessary to select an appropriate solution according to the pressure of the medium and the leakage. If the pressure of the medium is relatively small and the leakage is relatively small, it is necessary to polish around the leakage point before the leakage problem is further expanded, then send an appropriate taper pin into the leakage point for temporary blocking, and then seal and fix it externally with adhesive, finally, the sealing tape is wrapped around the outside for sealing to form a new sealing structure. If the leakage of the medium pressure is relatively large, and the amount of leakage is relatively large, then in the solution, the need to first weld an inner diameter of the valve body is larger than the leakage point of the nut, so that the medium can flow from the nut, and then with the corresponding plug, screw it into the nut to stop leakage.
Countermeasures for Flange Leakage
For the leakage problem at the valve flange connection, the following situations need to be analyzed in detail:
①If the gap at the flange is relatively small and the leakage is relatively small, you can directly install the bolt-specific additive joint on the removed bolt, tighten the nut, install the injection bolt, and embed the copper wire or packing into the flange In the gap, a new sealed cavity is formed, and then the sealant is injected into it.②If the gap at the flange connection is relatively large, it is necessary to use a convex clamp to design an injection hole in the middle of the two flange connection bolts to stagger the position of the bolts. In order to prevent medium leakage, compressed air can also be used to purge the leaked medium to one side.③If there is a leak at the large diameter flange connection, it is necessary to use the local pressure plugging method, fix it with a clamp, and then inject sealant from the local area to effectively eliminate the dynamic leak point.
Countermeasures for valve body leakage
When there is a problem of valve body leakage, it is necessary to select an appropriate solution according to the pressure of the medium and the leakage. If the pressure of the medium is relatively small and the leakage is relatively small, it is necessary to polish around the leakage point before the leakage problem is further expanded, then send an appropriate taper pin into the leakage point for temporary blocking, and then seal and fix it externally with adhesive, finally, the sealing tape is wrapped around the outside for sealing to form a new sealing structure. If the leakage of the medium pressure is relatively large, and the amount of leakage is relatively large, then in the solution, the need to first weld an inner diameter of the valve body is larger than the leakage point of the nut, so that the medium can flow from the nut, and then with the corresponding plug, screw it into the nut to stop leakage.
Related News
2026/02/28
Contact Information
+86 27-8970 8339
Address: No.5, Zhengjie, Shuangliu Street, Xinzhou District, Wuhan City, Hubei Province