Leakage in the high-pressure steam vent valve
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I’d like to ask everyone: how is leakage at the flange in front of the high-pressure steam vent valve at 10 MPa and 540°C addressed? Are there pressure-welded ones?
This post was last edited by chensf123 on 2019-1-3 20:36. Is the leakage at the flange face or the valve body? If it is the flange face, it is recommended to use workpieces and fixtures to seal the leak; if it is the valve body, a jacket can be constructed and a valve can be installed at the bottom before welding. In short, direct welding is not recommended; whether it’s due to gasket issues or flange erosion, the process must be stopped as soon as possible, otherwise it will make the cleanup more difficult. If the leakage is caused by a sand hole in the valve body, try using a ramming tool to address it, and then proceed with welding after the machine is shut down.
I’ve already used clamps, but leaks still occur. I’m wondering if I should weld the flange together with the clamps as well But there is also concern about problems occurring during welding, after all, the pressure and temperature of the medium are too high
It is necessary to hire professionals who specialize in plugging leaks under pressure to handle such situations. We have encountered many similar issues with our high-temperature steam pipelines in the past, and it isn’t difficult to find professionals for this task; their approach yields better results.
The clamps are made by professionals; the main concern is that the welding temperature might be too high, and whether there could be risks in environments with high temperatures and pressures
It is extremely dangerous; non-professionals should try not to handle it on their own. In cases of high temperature and high pressure, try to avoid welding as much as possible using other methods; firstly, it increases the difficulty of subsequent processing, and secondly, it exacerbates the situation...
Find a professional who specializes in high-pressure leak sealing to handle it; we don’t dare to weld it.
Let professionals handle professional tasks; when there’s a leak in our steam pipes, we always turn to the appropriate experts to fix it.