Working principle of the self-locking steel ball on the local glass panel level gauge of the steam drum!
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While reviewing some materials, I came across information stating that at the location of the root valve for the on-site level gauge in the steam drum, there is usually a self-locking steel ball. When the glass plate level gauge breaks and causes severe leakage, this steel ball automatically seals off the connection between the level gauge and the root valve, thereby preventing large-scale steam leakage. Anyone who has relevant information regarding its structure and working principle could please share it! Thank you so much!
Main reason: Under normal conditions, the furnace water is alkaline in nature, and the main component of glass level gauges is quartz, which reacts with the alkalinity in the furnace water, leading to corrosion of the glass. At the same time, steam is present in the upper part of the glass level gauge, and the condensed water washes against this upper portion, resulting in a relatively fast rate of corrosion and thinning in that area. Measure: In medium and large enterprises, a record should be kept of the service life of glass level gauges, which need to be replaced regularly, usually every about 8 months. When the service life expires, they are all replaced, whether there are any faults or not. Generally, replacing the glass level gauge up and down every three to four months can extend its service life. Strictly control the levels of sodium and phosphate ions in the boiler water as well as in the steam. It can effectively extend the service life.
I’m also looking for this information. If you have it, please send it to me via email. Thank you very much! 649955861@qq.com
It is a simple horizontally mounted ball check valve, with an outlet diameter that is smaller than the diameter of the ball; in the event of a leak, the pressure difference pushes the ball against the outlet, thereby sealing off the passage.
As mentioned on the 4th floor: the steel balls are in the middle, allowing the medium to pass through in both directions under normal conditions. When the medium leaks rapidly, the steel ball moves and blocks the outlet. The premise is that the valve should be opened only halfway; opening it fully also affects the effectiveness. Additionally, the pressure of the medium must be greater than 350 kPa, as a lower pressure is not sufficient to push the steel ball to block the outlet.