FIELD: engines and pumps.
SUBSTANCE: submerged twin screw pump incorporates a motor, an upper vertical screw-holder pair and a lower vertical screw-holder pair linked with the base. The said pairs feature opposed screw surfaces and are linked via a twin eccentric coupling. The screw cross section in every aforesaid pair is formed by a circumference with its center shifted relative to the screw axis by magnitude of eccentricity. The screws of the lower and upper pairs represent, in cross section, the different-diameter circumferences that ensure a directed axial load in the pump operation. The values of eccentricity, the number of pairs and the backlash in the said pairs are equal.
EFFECT: increase of reliability and durability of electrically-driven pump for oil extraction work.
4 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SUBMERSIBLE DOUBLE SCREW ELECTRIC PUMP | 2001 |
|
RU2183769C1 |
| 0 |
|
SU236987A1 | |
| 0 |
|
SU167144A1 | |
| OIL-PRODUCING SUBMERSIBLE SINGLE-SCREW PUMP | 2003 |
|
RU2256819C1 |
| SUBMERSIBLE PUMPING UNIT | 2004 |
|
RU2268397C1 |
| SUBMERGED ONE-AUGER PUMP BEARING UNIT | 2008 |
|
RU2375604C1 |
| SUBMERGED DIAPHRAGM ELECTRIC PUMP FOR LIFTING BED LIQUID FROM WELL | 1992 |
|
RU2044161C1 |
| PLAIN THRUST BEARING FOR SHAFTS OF SUBMERSIBLE CENTRIFUGAL ELECTRIC PUMPS | 2007 |
|
RU2376505C2 |
| 0 |
|
SU207029A1 | |
| SUBMERSIBLE ELECTRIC MOTOR FOR WELL | 2005 |
|
RU2287721C1 |
