Screw pump

The screw pump delivers liquid by interlocking the screw with the liner, resulting in volume changes in the suction and discharge chambers. This pump has a simple structure, easy manufacturing, high flow rate, low head loss, high efficiency, and is easy to maintain and repair. Screw pumps are suitable for conveying high viscosity media, with good self-priming ability, smooth operation, stable flow rate, minimal pulsation of the conveying medium, simple operation, relatively low maintenance costs, high efficiency, and energy savings. Shanghai Yinai Pump Valve is a major screw pump manufacturer in China, and has cooperated with customers to study the impact of bottomhole pressure fluctuations on heavy oil production through experimental simulation methods. Under constant pressure conditions, heavy oil and formation water are simultaneously injected into an artificial core of saturated oil to simulate the oil-water two-phase flow characteristics of a near wellbore reservoir under pump suction. The production processes of a pumping pump and a screw pump are simulated using an electromagnetic valve at the outlet to generate and not generate periodic fluctuations. From the analysis of oil and water production, it was found that the water production under fluctuating conditions is higher than that under non fluctuating conditions, while the former produces less oil than the latter. Moreover, as the fluctuation period increases, the water production rate increases while the oil production rate decreases. The pressure fluctuations during the production process of the oil well pump increase the amount of water produced; The continuous suction of screw pumps reduces water production and increases heavy oil production. The screw pumps manufactured by Shanghai Meiyan Yi Pump Valve are mainly suitable for conveying various liquids, including high viscosity liquids, liquids containing solid particles, etc. They are widely used in various fields such as industry, chemical industry, medicine, food, etc., including various chemical substances, crude oil, petroleum, detergents, coatings, pigments, synthetic resins, and acids, bases, salts, organic solvents, etc. The following screw pump product pictures are for reference only.