Vacuum Degasser Troubleshooting
A desgaseificador por vácuo is a specialized equipment used to treat gas-impregnated drilling fluids. Suitable for use with various mud purification systems, it plays a crucial role in stabilizing drilling fluid viscosity, restoring its specific gravity, and reducing drilling fluid costs. It can also function as a high-power agitador when the drilling fluid is gas-free.
This degasser is a vacuum-type degasser. It uses the suction action of a vacuum pump to create a negative pressure zone within the tanque de vácuo. Under atmospheric pressure, drilling fluid enters the hollow shaft of the rotor through a suction pipe. It is then ejected from the hollow shaft through windows surrounding the hollow shaft in a jet-like manner toward the tank wall. Due to collisions and the action of a foam separator, bubbles in the drilling fluid are broken, and gas escapes through the vacuum pump. The drilling fluid then flows freely into the discharge chamber and out of the tank.
Common vacuum degasser malfunctions and their solutions during use are as follows:
1. If the vacuum level is low or zero. There are generally five possible causes and solutions:
1. There is insufficient or no water in the vacuum pump, preventing the formation of a rotating water ring. Our common method is to fill the pump with water and adjust the ball valve on the water inlet line.
2. Check if the clearance between the two ends of the impeller is excessive. If so, reduce the paper gasket or replace the impeller to adjust the clearance.
3. If the temperature inside the pump is too high, add more cold water.
4. Check the seals at the bolted joints or exhaust pipe. If not, tighten the bolts or seal the exhaust pipe to prevent air leaks.
5. If the suction or exhaust pipe is not immersed in mud, immerse it in mud.
2. If the shaft horsepower is too high, check whether there is too much water in the pump or the impeller cannot automatically adjust its clearance on the shaft sleeve. If the former is the case, readjust the ball valve; if the latter is the case, open the pump cover, remove the impeller, adjust the clearance, and reinstall it. Ideally, the impeller should be able to move freely on the shaft.
3. If there is any unusual noise or strong vibration after startup, it may be due to damage or solid particles entering the pump. In this case, open the pump head and clean it. If damaged, replace it immediately. It is also possible that foreign matter has entered the vacuum tank. In this case, you need to open the flange or the bottom cover to clean it out.
