Universal three-screw pump with wide application
1.The screw units is rotating along with the external prime mover.
2.The spiral groove of the screw opens periodically,and the volume of suction cavity increases,resulting into a vacuum.
3.The medium is absorbed into the spiral groove and sealed in the spiral groove.
4.Along with the rotation of screw,the medium moves toward the outlet along the axial line of the screw.
5.The medium is pumped out.This is the operating principle of screw pump.
Performance Viscosity:3.0 ~ 1500 mm2/s
Flow:5 ~ 5300 L/min
Maximum Pressure:4.0 Mpa
Maximum Temperature:150 ℃
Steam turbine main oil screw pump function: to unit bearing oil supply, lubrication and cooling bearings. Supply sufficient pressure oil for speed regulation system and protection device. The main oil pump is one of the important accessory parts of the steam turbine. It is installed in the front box of the unit and provides all the lubricating oil and safety oil for the unit at full speed. During the start-up and shutdown of steam turbines, the lubricants and safety oils of units are supplied by auxiliary AC lubricating oil pumps and high-pressure starting oil pumps. The use of main oil pump can not only save power consumption, but also prevent the risk of oil breakage and Bush burning due to power failure of AC lubrication pump.
Screw pump has a wide range of applications, not only for viscous heavy oil wells, heavy oil lifting and cold transportation, but also for high sand wells and high gas wells. It can be used in oil-gas mixing fields without gas lock. Screw pump equipment covers a small area and can go down to inclined wells. It is also suitable for cluster wells and horizontal wells in offshore oilfields. Use. The large space of wellhead backpressure can also make the screw pump used for centralized transportation of distant wells while ensuring normal production.
In addition, the ratchet-pawl anti-inversion device of screw pump has the advantages of flexibility, applicability, simplicity and reliability. When the pump stops, the rod will not be tripped because of the high speed inversion of the rod column caused by the instantaneous pressure of the liquid column. If the system stops because of the accident, sand deposits on the upper part of the pump, the recovery ability of the screw pump is also strong.