Problems with coal powder angle valves
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This post was last edited by wwxxss_1 on 2010-7-1 07:24. On June 30, 2010, it was observed that the No. 1 coal burner was not functioning properly; it was necessary to check the angle valve for No. 1 coal powder. Upon on-site inspection, it was found that the valve could operate within the range of 60%-100%, but not within the range of 0%-60%. (This valve: a fault results in 100% closed, 0% open.) Why? ? ?
Is the valve core or valve stem stuck? Check the internal passages.
What type of survey throttle is being used? Pneumatic diaphragm? The main reason for this situation is that the valve core is stuck! Check the locator output again. If the gas supply output is normal. Most likely it’s due to the card; the possibility of air leakage from the diaphragm is low!
Bellows? What do you mean? I don’t quite understand yet