High-pressure oil pump twin-screw pump is a type of external meshing screw pump, operating on the principle of two intermeshing screws that do not touch each other, utilizing the changes in their spaces to pump fluids. This pump employs intermeshing spiral sleeves on the master and slave shafts, forming a constant-volume sealed chamber between the sleeve and the pump body or liner. The medium is delivered to the middle of the pump body separately as the screw shaft rotates, where they converge and are sent to the pump's outlet, thereby achieving the purpose of pumping.
Structural Features
High-pressure oil pumps, dual-screw pumps, come in various configurations, including horizontal, vertical, and those with heating sleeves among others. Their structural features include:
Sealed cavity design: The pump body and the outer surface of the screw as well as the gap between screws are minimized to ensure that liquid does not reflux through the gaps.
Bearings Type: Available in two forms - built-in and external bearings. Built-in bearings are lubricated by the conveying material, while external bearings separate the working chamber from the bearings for independent lubrication.
Synchronous Gear: Adjust the synchronous gear to prevent the screw from contacting, while transferring half of the output torque to the driven screw._
Application Fields
High-pressure oil pumps, twin-screw pumps, are widely used in various industrial fields, including:
Oilfield: Used for multiphase oil, gas, and water transportation as well as crude oil输送.
Shipbuilding Industry: Used for marine loading pumps, bilge cleaning, and wastewater treatment, etc.
Petroleum Chemical Industry: Used for loading and transporting various resins, pigments, paraffin, paints, inks, latex, etc.
Power plant: Used for heavy oil, crude oil transportation, and main engine lubricating pump.
Performance Parameters
The performance parameters of the high-pressure oil pump twin-screw pump include:
Operating Pressure: Up to 10 MPa.
Flow Range: 1 to 2000 m³/h.
Temperature Range: 0-150°C.
Medium Viscosity: 0 to 10,000 mm²/s.
