Is it necessary to weld the seat bolts of the coal lock-down valve for pressurized gasification of pulverized coal?
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Is it necessary to weld the seat bolts of the coal lock-down valve for pressurized gasification of pulverized coal?
It should prevent vibration-induced loosening. . .
Well, why would you weld a bolt? Keep an eye on it during regular inspections; tighten it if it becomes loose
This friend. . The valve seat bolt of the coal lock lower valve is located inside the gasifier. ! ! How do you conduct inspections? ? ? ? It is absolutely necessary to weld this! ! !
It can be spot-welded; otherwise it is prone to loosening and eccentricity, resulting in the lower valve not sealing properly
If it’s not visible, why not use self-locking screws? Internal vibrations are unavoidable, and welding cannot provide complete assurance either. Vibration in valve operation can be attributed to factors such as the fluid state, flow rate, medium, and flow field; such vibration can be eliminated or reduced through technical improvements. The gasification lockhopper pipelines at Texaco are plagued by severe vibration problems, but these can still be avoided with careful attention.