Compared with other artificial lift methods,screw pump system

(1) meet the high sand wells. Theoretically, the screw can transport amounted to 80% of mortar sand,hydraulic piston pump , sand down in crude oil amounted to 40% of the cases may be normal production (except sand buried situation).

(2) adaptation does not happen with high gas screw air lock, and therefore more suitable for mixed transportation of oil and gas,submersible fuel pump but the downhole pump inlet of free gas will affect the volumetric efficiency.

(3) suitable for offshore oilfield cluster wells and horizontal wells group. PCP can be under the slant hole section,gear type pump and small equipment footprint, making it suitable for offshore oil.

Can ordinary centrifugal transfer gas ?

Centrifugal impeller is rotated and the water use of centrifugal movement to occur work. Before starting the pump,gas transfer pump must be filled with water suction pump casing and the inner tube, and then start the motor, so that the shaft drives the impeller and water to make high-speed rotation, centrifugal movement of water occurs, thrown to the outer edge of the impeller,hydraulic piston pump the volute casing pump flow Road inflow pump pressure water line.

The basic structure of the centrifugal pump is composed of six parts,respectively impellers, pump, pump shaft, bearings, seal rings, stuffing box. So ordinary centrifugal pump can transport gas it? The answer is no. This is because as ordinary centrifugal blade is thick airfoil does not apply to transport gas.

The direction of rotation is not right,submersible fuel pump tightness worse, can not for the transmission of gas. Leaves transporting gas is generally thin and narrow, curved and twisted airfoil.

Note disassembly and re-install a small tanker pump

First, install the portable fuel transfer pump cover. Copper jacket should be coated with a little grease in order to assemble the skeleton oil seal and protection. When assembling the pump cover screws, should be strictly in accordance with the order of twice the diagonal tighten each screw tightening torque knob should be basically the same, so as not to pump cover and pump combination Mifengbuyan.
Secondly, before disassembling the pump cover, must be sanded Woodruff keyway on the shaft, so as not to dismantle the pump cover scratches on Woodruff keyway burr seal, causing leakage.
Again before the pump is attached to the splitter should carefully check the pump pad is damaged, whether upside. Pump installed, should ensure that the center plane of symmetry pump pulley and motor pulley central plane of symmetry in the same plane, pulley does not allow a clear swing and axial runout phenomenon.
At the same time the rotor assembly into thegas fuel pump chamber, the application of hand (or stuck with a stiff shaft keyway hand) rotating rotor blades closer look at whether the retractable blade slot, while up to see if the rotor blades. If the blade above the rotor blades shall be polished. So that high or slightly below the rotor and the rotor.
And before servicing must be reliably cut off the power. Remove the belt from the pulley, so as to avoid accidental injury. Ready tipping the oil container to avoid pump and oil separator inside leak spilled everywhere. Finally, before you re-install the pump, use kerosene to clean the parts, do not allow any dirt sticking to avoid scratching the pump, resulting in a new fault.