CN201321967Y - Rotating plunger oil-well pump with actuating cylinder - Google Patents

Abstract

The utility model discloses a rotating plunger oil-well pump with actuating cylinder and relates to a rotating piston pump. The utility model aims at designing a rotating plunger oil-well pump with actuating cylinder, which causes no sand filling, sand jamming and is energy-saving and has low oil extraction cost. The key points of the technical proposal lie in that a pump barrel is provided with an actuating cylinder and a plunger; an upper thruster and a lower thruster are arranged on a plunger body; a thruster and a rotating sealer are arranged on the actuating cylinder; and a centering mechanism is arranged between the plunger and the actuating cylinder. The rotating plunger oil-well pump with actuating cylinder is used for oil pumping units.

Description

Movable barrel type rotary plunger oil well pump

Technical field:

The utility model relates to a kind of rotary piston pump, particularly a kind of movable barrel type rotary plunger oil well pump.

Background technique:

The widely used American oil well pump in present oil field, though have advantage of simple structure, owing to contain sand, water and corrosive material in the fluid, after oil pump work a period of time, produce sand in the pump and bury and the sand card, fouling on pump wall and the plunger body, frictional force between plunger and pump barrel is increased, and energy consumption increases, the oil pipe eccentric wear, the oil well reparation is frequent, influences oil recovery amount and strengthens cost for oil production.

Summary of the invention:

The purpose of this utility model provides a kind of movable barrel type rotary plunger oil well pump that sand buries, the sand card is energy-conservation and cost for oil production is low that do not produce.The technical solution of the utility model is, movable barrel type rotary plunger oil well pump, comprise plunger and pump barrel, it is characterized in that: the screw thread of running shaft lower end is connected with the upper end of moving tube thruster, the screw thread of its upper end is connected with sucker rod, the screw thread of plunger upper end is connected with thruster lower end on the plunger, the screw thread of plunger lower end is connected with thruster under the plunger, the two ends of plunger are provided with centering machine and cooperate with moving tube and pump barrel rolling respectively, be provided with centering machine between moving tube and the pump barrel, rotating seal is rotatably assorted on moving tube, be evenly equipped with helical blade on the outer circumferential face of this rotating seal, blade and pump barrel Spielpassung, the outer circumferential face of thruster is provided with helical blade under the plunger, cavity between the helical flow path that forms between the helical blade and pump barrel and the hemisphere standing valve and the cavity between plunger and the pump barrel communicate, and the upper end of thruster is provided with axial blind hole and is communicated with axial bore in the plunger under plunger, is provided with radial hole under the plunger in the thruster and is communicated with its axial bore; Be evenly equipped with helical blade on the side face of thruster upper end on the plunger, be provided with the plunger outlet valve in the lower end axial blind hole of thruster on the plunger, helical flow path lower end on the plunger between the thruster helical blade is communicated with the plunger outlet valve by the radial hole in the thruster on the plunger, and its upper end is communicated with cavity between a pump barrel and the moving thruster by moving tube central axial bore; Be evenly equipped with helical blade on the side face of moving tube thruster, lower end of this moving tube thruster is provided with radial hole and will moves an outlet valve and be communicated with helical flow path on the moving thruster, the sand device rotational support with rotating shaft that moving tube thruster is connected on, the upper end of this sand device is a disking body, be evenly equipped with helical blade on the circumference of its lower end, be uniformly distributed with radially strip shape gob on the disking body along the circumference, the bottom of mouth is a circular hole, the husky device rotational support of retaining that is evenly equipped with screw piece on the side face cooperates on moving tube and with the pump barrel commentaries on classics, above-mentioned each centering machine, one annular solid is arranged, and ball-and-socket and ball uniform on it are rotatably assorted, and ball body exposes to the inner and outer surface of annular solid.The utility model have compared with the prior art do not produce that sand buries, sand card and pump housing fouling thereby remarkable advantage energy-conservation and that cost for oil production is low.

Description of drawings:

Fig. 1 is that the utility model movable barrel type rotary plunger oil well pump gets structural representation, and Fig. 2 is the plan view of sand device, and Fig. 3 is the A-A sectional view of Fig. 2, and Fig. 4 is the adjective-centre structure schematic representation.

Embodiment:

In conjunction with above accompanying drawing the utility model is elaborated, in pump barrel 2, be provided with moving tube 5 and plunger body 11, the upper end of thruster 13 is connected with the lower end of plunger by screw thread under the plunger, be evenly equipped with screw piece on the cylinder of thruster under this, radially inclined hole 15 and axial blind hole and the plunger body interior axial bore of the lower end of the helical flow path that forms between the screw piece by the thrust body is communicated with, following thruster rotational support is on the hemisphere standing valve 14 of pump barrel lower end, the lower end of thruster 8 is connected with the upper end of plunger 11 with screw thread on the plunger, the upper end of plunger is provided with oiling valve and valve ball 9, be evenly equipped with screw piece on the upper end cylinder of thruster on this plunger, the helical flow path that forms between the screw piece passes through radially, and inclined hole is communicated with the plunger outlet valve, be provided with valve ball 9 in this outlet valve, sand device 1 rotational support is in the upper end of running shaft, be evenly equipped with screw piece on the cylindrical shell of sand device 1 lower end, its upper end is a dish type, be evenly equipped with radially long mouthful on the disk body, long mouthful the mouth end is the circular hole of diameter greater than long mouthful width, and sand device adopts nylon to make.The epimere of plunger body and last thruster place in the moving tube 5, be provided with centering machine 7 between thruster and the moving tube on plunger body and the plunger, be provided with centering machine 6 between moving tube and the pump barrel 2, the structure of above-mentioned centering machine 6,7,12 is, ball is rotatably assorted in the ball-and-socket that distributes on annular solid, ball diameter is greater than the radial thickness (referring to Fig. 4) of annular solid, its effect one is centering, anti-eccentric wear, the 2nd, when moving tube moves up and down, slip between moving tube and plunger and the pump barrel becomes rolling, saves kinetic energy, prolongs the life-span of oil well pump.The effect that upper and lower thruster of plunger and moving tube thruster 3 are set makes plunger rotation and the rotation when moving up and down of moving tube, make fluid produce eddy flow, stop sand precipitation in the fluid to produce sand and bury and the sand card, alleviate the barrel fouling, make the resistance that tin when axial motion, alleviates with fluid.The effect of sand device is, when moving tube was descending, the fluid upper reaches made sand device get disking body inwardly to dwindle, increase the circulation area of runner, and when it is up,, prevent that sand from sinking in the pump barrel because the sand that the gravity of the oil of its top outwards opens with its top disking body keeps off up.In order further to improve pump efficiency, one joint can be set the plunger of oil well pump or more than two joints, with being threaded, the joint is provided with centering machine between each plunger.The rotating seal 10 that has screw piece is installed in moving tube lower end, and rotational support is rotatably assorted on moving tube and with pump barrel.

Oil pumping principle of the present utility model is that when the moving tube of sucker rod drive moved upward, the pump barrel cavity of resorption was negative pressure; The hemisphere standing valve is opened, crude oil is inhaled into pump barrel from oil pipe, promote thruster rotation under the plunger, fluid one tunnel is through entering a moving tube lower end cavity along thruster helical flow path, last thruster helical flow path under the plunger, the radial hole 15 of another road thrust body under plunger enters in the axial bore of plunger body the helical flow path that enters thruster through the plunger outlet valve and makes the plunger rotation, and oil flows to into moving tube inner chamber.When the moving tube of sucker rod drive moves downward, remain in following plunger of moving tube and the crude oil in the annular chamber between the pump barrel, be closed under the situation at the hemisphere standing valve, the radial hole under plunger in the thruster upwards flows and opens plunger outlet valve and a moving tube outlet valve and enter oil pipe and be drawn out of.Simultaneously, moving tube inner chamber oil is flowed through, and outlet valve on the moving tube enters the helical flow path of moving tube thruster and the helical flow path of sand device enters in the oil pipe.

Claims (1)

1, movable barrel type rotary plunger oil well pump, comprise plunger and pump barrel, it is characterized in that: the screw thread of running shaft lower end is connected with the upper end of moving tube thruster, the screw thread of its upper end is connected with sucker rod, the screw thread of plunger upper end is connected with thruster lower end on the plunger, the screw thread of plunger lower end is connected with thruster under the plunger, the two ends of plunger are provided with centering machine and cooperate with moving tube and pump barrel rolling respectively, be provided with centering machine between moving tube and the pump barrel, rotating seal is rotatably assorted on moving tube, be evenly equipped with helical blade on the outer circumferential face of this rotating seal, blade and pump barrel Spielpassung, the outer circumferential face of thruster is provided with helical blade under the plunger, cavity between the helical flow path that forms between the helical blade and pump barrel and the hemisphere standing valve and the cavity between plunger and the pump barrel communicate, the upper end of thruster is provided with axial blind hole and is communicated with axial bore in the plunger under plunger, is provided with radial hole under the plunger in the thruster and is communicated with its axial bore; Be evenly equipped with helical blade on the side face of thruster upper end on the plunger, be provided with the plunger outlet valve in the lower end axial blind hole of thruster on the plunger, helical flow path lower end on the plunger between the thruster helical blade is communicated with the plunger outlet valve by the radial hole in the thruster on the plunger, and its upper end is communicated with cavity between a pump barrel and the moving thruster by moving tube central axial bore; Be evenly equipped with helical blade on the side face of moving tube thruster, lower end of this moving tube thruster is provided with radial hole and will moves an outlet valve and be communicated with helical flow path on the moving thruster, the sand device rotational support with rotating shaft that moving tube thruster is connected on, the upper end of this sand device is a disking body, be evenly equipped with helical blade on the circumference of its lower end, be uniformly distributed with radially strip shape gob on the disking body along the circumference, the bottom of mouth is a circular hole, the husky device rotational support of retaining that is evenly equipped with screw piece on the side face cooperates on moving tube and with the pump barrel commentaries on classics, above-mentioned each centering machine, one annular solid is arranged, and ball-and-socket and ball uniform on it are rotatably assorted, and ball body exposes to the inner and outer surface of annular solid.

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