How to detect and deal with dehydration failure of permanent roof gasoline tank early
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How to detect and deal with dehydration failure of permanent roof gasoline tank early?
1. Look at the oil-water interface in the dehydration tank. 2. Changes in dehydration amount. 3. Top pressure of dehydration tank.
1. Oil and water water surface interface 2. Look at the normal top pressure 3. Look at the changes in cold return flow
The simplest way is to adjust the boundary control valve internally, open it up or down, and observe the trend of the boundary. If there is no change, the boundary is malfunctioning, so practice it quickly.* Instrument calibration. If you are worried, check the on-site boundary location.
Internal fuck: 1. Changes in the opening of the regulating valve ； 2. Boundary display trend curve ； 3. Normal steam delivery flow and regulating valve opening, 4. Return flow and tower pressure changes. External sex: 1. Whether the display of the glass tube changes ； 2. The difference between the dehydration amount of the dehydration bag and the usual amount ； 3. The pressure and current changes of the normal steam pump.
The poster didn't tell clearly whether it was the liquid level detection failure or the control valve failure. The phenomena are different. In short, if you are familiar with the operating parameters, you can think of the subtle differences and where they have changed.
The water cutting automatic control valve is in an abnormal valve position for a long time (the time can be calculated based on the equipment)； Abnormal changes in temperature and pressure at the top of the tower ； The pump is running abnormally ； Return temperature and flow rate. The key is internal operation experience. Managers should also remind key control points that should be paid attention to at different times and strengthen instrument maintenance. Poor heating and insulation of the liquid level gauge and clogged pressure port are the main reasons for instrument failure.
Mainly rely on strengthening inspections to detect. . . Boundary failure. . . It will be easy to run out of oil. . . Once an oil leakage accident occurs. . . The first is to keep people from the scene and fill the water in time until the water seal overflows. . . The second is to close the water cut valve to avoid oil leakage. . . The third is to quickly contact the interface for repair. . . In an emergency, an external glass tube or oil-resistant transparent rubber tube can be connected to observe the actual boundary position inside the tank. in order to take the next technical steps. . . :lol
1. Oil and water water surface interface 2. Look at the normal top pressure 3. Look at the changes in cold return flow