1. What is the role of the vacuum pump? What types of vacuum pumps are commonly used in refineries? The vacuum pump is made to create a vacuum in the equipment or container that operates below ambient atmospheric pressure or high vacuum. Vacuum pumps commonly used in refineries consist of steam aircraft vacuum pumps, water ring vacuum pumps and reciprocating vacuum pumps.

2. What is the working basic principle of the steam plane vacuum pump? It includes a nozzle, a blending chamber, an growth chamber, and a pressure wall plug. In operation, water vapor is sprayed from the nozzle in to the blending chamber at a high speed (1200-1500 m/s). At this time, a particular negative pressure is generated at the nozzle, so that the pumped gas can be flushed into the combining chamber from the gas inlet and blended with drinking water vapor. And get some energy from the drinking water vapor. When the combined gas stream enters the diffuser chamber, the Sprocket velocity steadily decreases along the axis, and the pressure steadily boosts along the axis circulation until it really is discharged above the atmospheric pressure. Due to the continuous work, the gas in the gear is continually extracted, thus causing a vacuum (negative pressure) state inside the equipment.

3. What are the characteristics of the steam jet vacuum pump? The steam jet vacuum pump entrains the pumped gas at a high speed of water vapor, so it has the characteristics of huge pumping capacity, high vacuum, simple produce, convenient set up and maintenance, etc. Presently, the vacuum distillation unit of the refinery Most of the vacuum pumps used are steam jet vacuum pumps.

4. What is the building of the water band vacuum pump? What’s the working theory of the water ring vacuum pump? The water ring vacuum pump is composed of a pump casing, an impeller, a water band, a suction chamber, a discharge chamber, and a vent hole.