CN1188598C - Submerged-in-oil electric piston pump - Google Patents
Submerged-in-oil electric piston pump Download PDFInfo
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- CN1188598C CN1188598C CNB021404828A CN02140482A CN1188598C CN 1188598 C CN1188598 C CN 1188598C CN B021404828 A CNB021404828 A CN B021404828A CN 02140482 A CN02140482 A CN 02140482A CN 1188598 C CN1188598 C CN 1188598C
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Abstract
The present invention discloses an oil-submersible electric piston pump which is composed of a cylindrical asynchronous oil-submersible motor in a straight-line type, a rodless piston pump and a secondary connector; one new oil production machine can be provided for an oil field. The lower end of a secondary pipe rod of the cylindrical asynchronous oil-submersible motor in a straight-line type is provided with an oil inlet; the oil inlet, the inner diameter of the secondary pipe rod and an upper cavity of the piston form a flow passage; after the secondary pipe rod is connected with an upper oil outlet valve body in the rodless piston pump, the secondary pipe rod is used as a piston rod of the piston pump; the piston can be driven to do straight reciprocating motion by the secondary pipe rod. The cylindrical asynchronous oil-submersible motor in a straight-line type and the rodless piston pump are respectively correspondingly independent. An oil pipe joint in a connector is coupled with an oil pipe and the motor; the coupling pump joint is coupled with the motor and the rodless piston pump; an existing maximum oil-submersible electric piston pump can be formed after coupling. The piston pump is especially suitable for pumping operation with large capacity and run length and dives in liquid (the mixtures of water and oil or of the oil, the water and gas).
Description
Technical field: the invention belongs to oil recovery machiner equipment, particularly be the oil diving electric valve pump that constitutes by coupling by asynchronous submersible electric motor of cylindrical linear and rodless piston pump.
Background technique: at present, the oil recovery machiner that use in the oil field has: bar oil recovery machiner and rodless pumping operation machinery are arranged, use more have electric submersible centrifugal pump, electric submersible single screw pump in the rodless pumping operation mechanical system.Electric submersible centrifugal pump, its oil-submersible motor are common rotation asynchronous motors, with the supporting use of rotating centrifugal pump.The critical piece that constitutes electric submersible centrifugal pump has: submersible electric motor, protector, separator, multistage centrifugal pump, one-way valve etc.When this pump is used for underground work, owing to be subjected to concrete operating conditions restriction (little, temperature is high) as hole diameter, structure is comparatively complicated, it is also bigger that manufacturing process is implemented difficulty, mostly the various parts of forming this pump are elongate rod, slender pipe, thin-wall part, poor rigidity, for guaranteeing radial support and axial force balance, also need some special members; Electric submersible single screw pump is the screw pump that is rotated by the rotation Asynchronous Motor Driving sucker rod on ground, have advantages such as simple in structure, that component are few, but because of the description of this pump few, stator glue spare key problem easy and that housing is thrown off waits to solve in addition, therefore working life, the reliability of this pump have much room for improvement, see with regard to present use condition, be used for the down-hole to slip into liquid (oil, water or Oil, Water, Gas mixture) also rare and drive helical rotor pump with submersible electric motor.
Chinese patent CN2467821Y provides a kind of pumping unit of linear motor driving, substituted electric rotary machine by linear electric motor, reduced band, wheel, speed reducer, slewing gears such as fourbar linkage, the complete machine parts are reduced, cost is low, reach certain synergy purpose, but the total footing foundation spare of pumping unit on the ground, frame, braking device, it is still essential that Equilibrator, the straight line motion of linear electric motor convert straight-line intermediate piece of polished rod etc. to, so the metal consumption of this machine also is considerable, this machine also is on the ground, drives oil well pump work by sucker rod.
" linear asynchronous motor " published China Machine Press in April, 1979 provides the structure of tubular linear electric motor, and this motor can only be used for the less and occasion of Fraquent start not of thrust.
Chinese patent 97101861.8 discloses a kind of tubular linear motor, and this technology has only provided a kind of structure of new-type elementary iron core.
In sum, also do not have at present to find to combine the oil diving electric valve pump that constitutes with the rodless piston pump by the asynchronous submersible electric motor of cylindrical linear.
Summary of the invention: the advantage that the objective of the invention is to be combined with bar oil recovery machiner and rodless pumping operation machinery, design a kind of oil diving electric valve pump, combine with the rodless piston pump with the asynchronous submersible electric motor of cylindrical linear, constitute oil diving electric valve pump by auxiliary coupling, for the oil field provides a kind of new oil recovery machiner; By in the pump barrel of rodless piston pump, increasing plug formula ring valve assembly, replacing the connecting tube valve assembly, make oil diving electric valve pump have the function of single suction plunger pump, two pumps of double suction reciprocating pump with unidirectional ring valve assembly.
Working principle of the present invention is: with the second tube pole of the asynchronous submersible electric motor of the cylindrical linear piston rod as reciprocating pump, during up stroke, second tube pole by the asynchronous submersible electric motor of cylindrical linear drives piston stroking upward, the liquid of piston upper chamber seals by two outlet valves of series connection, with 2 one-way valves that connect the pipe valve parallel connection and ends, liquid backs down the oil-feed valve ball under the inside and outside differential pressure effect, the beginning oil-feed, when piston ran to top dead center, epicoele oil extraction, cavity of resorption oil-feed finished.During down stroke, second tube pole drives descent of piston, and at this moment, oiling valve cuts out, and two outlet valves of series connection, connection pipe valve are opened, the piston upper chamber oil-feed, and when running to lower dead center, oil-feed finishes.What second tube pole went round and began again moves up and down, and realizes the pump functional oil.
The technical solution adopted for the present invention to solve the technical problems is: oil diving electric valve pump is made up of the asynchronous submersible electric motor of cylindrical linear, rodless piston pump, three parts of auxiliary coupling.
The cylindrical linear asynchronous motor is designed to three problems of heat radiation, sealing, thrust that the asynchronous submersible electric motor of cylindrical linear need solve motor: there is oil inlet hole the second tube pole lower end at the asynchronous submersible electric motor of cylindrical linear, oil inlet hole and second tube pole internal diameter, piston upper chamber constitute oil flow channel, make the liquid of suction enter the second tube pole internal diameter, discharge again, in the process of flow of fluid, heat is taken away, solved the heat dissipation problem of motor by liquid stream; Adopt the rod seal assembly to seal the sealing problem that solves motor at the motor two ends; Adopt annular primary iron core and disk-type winding to solve the problem of thrust at motor internal,, fill lubricating grease in the pump splice oil pocket, be used to strengthen sealing, the cooling of second tube pole and lubricate at motor cavity pack into cooling, insulation lubricant oil.
The asynchronous submersible electric motor of cylindrical linear by second tube pole, oil connection, flat cable head, stud, strain relief clamp, motor upper tip, electric machine casing, motor lower end, pump splice, " o " type circle, rod seal assembly, bearing housing, gland nut, double-screw bolt plug, housing screw, compress push rod, upper press ring, sliding bearing, annular primary iron core, disk-type winding, retaining ring, press seal swivel nut are formed down.Oil connection is a motor upper cover, and the upper end connects oil pipe.There are " o " type circle, piston seal bar assembly to form the sealing of second tube pole upper end in the Seal cage of motor upper tip, pump splice is the motor lower end cap, in have the dress lubricating grease oil pocket, have " o " type circle, piston seal bar assembly, press seal swivel nut that the lower end of second tube pole is sealed in the Seal cage of pump splice.Bearing housing, gland nut, upper press ring, sliding bearing, annular primary iron core, disk-type winding, following retaining ring are arranged in the motor, bearing housing and sliding bearing are movingly, annular primary iron core, disk-type winding axially locating are tightened up through pressure ring push rod, bearing housing, upper press ring with housing screw in the motor upper tip, bearing housing and sliding bearing are joined together with gland nut.Dress is set upright stop collar in the second tube pole upper end, plays the guide and limit effect of setting upright to second tube pole; Oil connection and motor upper tip, the motor lower end connects with stud with pump splice, and electric machine casing connects with motor upper and lower end head thread.After the connection, oil connection, motor upper tip, electric machine casing, motor lower end become one.Motor cavity is filled with insulation, cutting oil, and oil pocket is equipped with lubricating grease in the pump splice.Second tube pole is one of motor male part, and internal diameter is a liquid chunnel, and the lower end is drilled with oil inlet hole, and oil inlet hole and second tube pole internal diameter, piston upper chamber constitute oil flow channel, forms the piston rod of piston after second tube pole and the fuel-displaced valve body scyewed joint.Motor upper tip, annular primary iron core, disk-type winding, electric machine casing, following retaining ring, motor lower end constitute motor key foundation part.Can carry out the tandem motor combination according to the working condition requirement of oil well, satisfy the demand of production of recovering the oil electric energy.
The working principle of motor is: electric energy is imported by the flat cable head, between annular primary iron core and second tube pole, produce the shifting magnetic field through disk-type winding, under the effect of shifting magnetic field, produce induction electromotive force in the second tube pole, because second tube pole is a composite metal pipe, produces induction current in second tube pole, electrical conductor and shifting magnetic field interact, produce electromagnetic push, make between annular primary iron core and the second tube pole and produce relative movement.Because of the annular primary iron core is fixed in the casing, it is fixed that casing and oil pipe fuse, thereby the annular primary iron core is motionless, and relative second tube pole just produces straight line motion.The asynchronous submersible electric motor of cylindrical linear is the same with common rotation asynchronous motor, by exchanging the power supply wiring of any two-phase, can realize the opposite direction motion of three-phase linear motor, and according to this principle, linear electric motor just can back and forth movement.
The rodless piston pump is to use the piston rod of the second tube pole of the asynchronous submersible electric motor of cylindrical linear as pump, drives piston, makes piston carry out straight reciprocating motion.The rodless piston pump is made of three parts: quiet part, motion parts, control section.Quiet part mainly contains pump splice, pump barrel, oiling valve assembly formation, and these three members have also constituted the basic part of pump.Quiet part connected with the pump barrel upper end by pump splice, and pump barrel lower end and oil-feed valve body scyewed joint constitute the pump housing, and the oil-feed valve body also is the lower end cap of the pump housing.Motion parts is made up of second tube pole connection outlet valve assembly, connecting tube valve assembly, ball-joint assembly, piston assembly.The outlet valve assembly comprises fuel-displaced valve body, goes up fuel-displaced valve ball, goes up delivery valve seat, fuel-displaced valve body, fuel-displaced valve ball, delivery valve seat down down down, and upper and lower two outlet valves are connected into one and constitute the outlet valve assembly.The connecting tube valve assembly comprises connecting tube valve body, one-way valve assembly, and connecting tube valve body and check valve body are welded as a whole.The ball-joint assembly comprises bulb adapter, upper ball base, locking nut, " o " type circle, lower ball base bar.Piston assembly comprises piston, piston seal assembly, " o " type circle, " v " type circle pressure ring, thin round nut, thick round nut, the lower ball base bar of ball-joint assembly and the thin round nut in the piston assembly, thick round nut scyewed joint.Lower ball base bar external diameter and piston, " v " type circle pressure ring, " o " type circle movingly, with thin round nut, thick round nut with the lower ball base bar, be fixed into one with piston; The oiling valve assembly comprises oil-feed valve body, oil-feed valve ball, oil-feed valve seat, gland nut, valve seat connects movingly with valve body, between thick round nut in the piston assembly and the oil-feed valve body in the oiling valve assembly cushion pad is arranged, oil-feed valve body and pump barrel, cushion pad scyewed joint, gland nut and oil-feed valve body scyewed joint, the oil-feed valve body connects with the sand control pipe thread, and the sand control pipe thread connects the sand control cap; Control section comprises oiling valve assembly, series connection outlet valve assembly, connecting tube valve assembly, in the course of the work, and by the one-way flow of control section control liquid stream.
Auxiliary coupling is made up of oil connection, pump splice, oil-feed valve body, anti-sandpipe, sand control cap.The oil connection upper end connects with tubing round thread, the lower end connects motor with stud, the pump splice upper end connects motor with stud, lower end and pump barrel upper end scyewed joint, the pump barrel lower end connects with oil-feed valve body upper end snail line, the oil-feed valve body lower end connects with anti-sandpipe upper end snail line, and anti-sandpipe lower end connects with the sand control cap thread.Anti-sandpipe, sand control cap play filter sand oil-feed effect.
Asynchronous submersible electric motor of cylindrical linear and rodless piston pump are relatively independent, connect oil pipe with the oil connection upper end, the lower end connects the asynchronous submersible electric motor of cylindrical linear, motor connects the pump barrel of rodless piston pump with pump splice, the pump barrel of rodless piston pump connects the oil-feed valve body, and oiling valve sports association takes over control sandpipe, and anti-sandpipe connects the sand control cap, so connect, oil pipe, motor, pump, oil-feed valve body, anti-sandpipe, sand control cap are become one.
Second technological scheme of the present invention is that the rodless piston pump is made up of the pump housing, plug formula ring valve assembly, outlet valve assembly, unidirectional ring valve assembly, ball-joint assembly, piston assembly, oiling valve assembly; The asynchronous submersible electric motor of cylindrical linear constitutes oil diving electric valve pump by auxiliary coupling and rodless piston pump.Concrete technological scheme is to increase plug formula ring valve assembly in the pump barrel of rodless piston pump, replaces the connecting tube valve assembly with unidirectional ring valve assembly, makes this pump have the function of single suction plunger pump and two pumps of double suction reciprocating pump.Plug formula ring valve assembly is by spool, spring, swivel nut, o " type circle, plug formula ring valve body form; have ring runner, closure gasket groove on the valve body external diameter; fill in the formula ring valve body and have oil inlet hole; a side of oil inlet hole has valve core case; axially have spool bore, will fill in formula ring valve body by screw and be fixed on the pump barrel; Unidirectional ring valve assembly is made up of spool, spring, plug screw, press seal swivel nut, unidirectional ring valve body, " o " type circle, have oil inlet hole on the valve body external diameter, one side of oil inlet hole has valve core case, valve body has axial spool bore, spool place at the corresponding unidirectional ring valve body of second tube pole has oil outlet, unidirectional ring valve body one end and second tube pole scyewed joint, press seal swivel nut compress " o " type circle axial seal valve body.During this reciprocating pump work, the second tube pole drive piston by the asynchronous submersible electric motor of cylindrical linear carries out straight reciprocating motion.During down stroke, descent of piston, piston compressing cavity of resorption liquid enters the epicoele oil pipe through outlet valve, and simultaneously, epicoele plug formula ring valve has the bar epicoele with the liquid suction under the inside and outside differential pressure effect.During up stroke, piston stroking upward, cavity of resorption is under the inside and outside differential pressure effect, and liquid sucks cavity of resorption through oiling valve, and simultaneously, epicoele liquid enters second tube pole intracavity liquid circulation road through unidirectional ring valve, is discharged from.This pump once circulates, and can reach single entry pump 1.5-1.7 discharge capacity doubly, and to be suitable for the production fluid amount big for this pump for this reason, and the long oil well of stroke uses.
The present invention compares with the slide beam oil pumping system that uses at present, has saved pumping unit, sucker rod, has reduced the metal consumption of complete machine accordingly; Compare with electric submersible centrifugal pump, there is not protector on the structure, separator, one-way valve etc., the diameter of axle is also simple many to supporting, also few many of component, overcome electric rotating machine temperature rise heat dissipation problem (because of the second tube pole internal diameter is a flow channel for liquids, the heat that electric machine temperature rise produces is taken away by liquid stream at any time) simultaneously; With electric submersible single screw pump relatively because that electric submersible single screw pump is used at present is less, because of its oil production technology is perfect inadequately, the description of pump is incomplete, architecture quality is still waiting to improve and is in and promotes development and improve the stage, comparable conditions is few.In sum, that the present invention has is simple in structure, advantages, the particularly design of the asynchronous submersible electric motor of cylindrical linear such as component are few, discharge capacity is big, manufacturing process is simple, good reliability, long service life, motor is connected the formation oil diving electric valve pump with the rodless piston pump by auxiliary coupling is maximum contribution of the present invention.
The present invention is specially adapted to that discharge capacity is big, stroke is long, the swabbing operation in liquid (water, oil or Oil, Water, Gas mixture) of diving.
Description of drawings:
Fig. 1 is an overall structure schematic representation of the present invention;
Fig. 2 is the asynchronous submersible electric motor structural representation of cylindrical linear among the present invention;
Fig. 3 is a rodless piston pump structure schematic representation of the present invention;
Fig. 4 is the structural representation of second tube pole among Fig. 2;
Fig. 5 is second technological scheme rodless piston pump structure schematic representation among the present invention;
Fig. 6 is a plug formula ring valve body structure schematic representation among Fig. 5;
Fig. 7 is a unidirectional ring valve body structure intention among Fig. 5;
Fig. 8 is a motor upper tip structural representation among Fig. 2;
Fig. 9 is the structure sectional view of Fig. 8.
：1 2 3 4 5 6 7 8 9 10 11 12 13 14 “o” 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 “V” 39 40 41 “o” 42 43 44 45 46 47 48 49 50 51 52 53 “o” 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 。
Embodiment:
Fig. 1 provides overall structure of the present invention;
Fig. 2 is the asynchronous submersible electric motor structural representation of cylindrical linear among the present invention, oil connection 2 scyewed joint oil pipes as shown in the figure, and the lower end connects with motor upper tip 6 usefulness stud 4.Second tube pole 1 and motor sliding bearing 23 movingly, the lower end has outside thread to connect with last fuel-displaced valve body 27, the piston rod of formation piston 40, the lower end of second tube pole 1 is drilled with 2-4 the Φ 8-12 oil inlet hole 26 formation asphalt channel that communicates with piston upper chamber, sees Fig. 4.Motor upper tip 6, electric machine casing 7, motor lower end 8, disk-type winding 20, elementary iron core 21 constitute the basis part of motor." o " type circle 14, rod seal assembly 15 are housed in the Seal cage of motor upper tip 6 and pump splice 9, to the upper and lower end diameter of axle of second tube pole 1 to sealing, black box in the Seal cage of pump splice 9 compresses with press seal swivel nut 25, in the oil pocket lubricating grease is housed in the pump splice 9.Double-screw bolt consent 69 screw threads of double-screw bolt plug 16 and the motor upper tip shutoff oilhole that links is seen the structural representation of Fig. 8, Fig. 9 motor upper tip 6.Motor upper tip 6 outside threads connect with electric machine casing 7, electric machine casing 7 lower ends and motor lower end 8 scyewed joint, and motor lower end 8 connects with pump splice 9 usefulness stud 4.The upper end scyewed joint of second tube pole 1 is set upright stop collar 49, to guarantee the straight line motion of external part.Be pressed on down on the retaining ring 22 through compressing push rod, bearing housing 17, upper press ring 19, annular primary iron core 21 with housing screw in the motor upper tip 6.Disk-type winding 20 is placed in annular primary iron core 21 chambeies.Flat cable head 3 is penetrated by wire-feeding hold 71 through the inlet wire groove in motor upper tip 6, sees Fig. 8, Fig. 9, is connected with disk-type winding 20, with gland nut 18 bearing housing 17 and sliding bearing 23 is joined together.Screw, strain relief clamp 5 make flat cable head 3 fixing.Wherein flat cable head, oil-submersible motor can adopt standard piece with cable, strain relief clamp, terminal box, control panel, also can be according to the supporting VFC screens of user's needs (linear electric motor variable speed).
What Fig. 3 described is rodless piston pump structure among the present invention, pump splice 9 and pump barrel 10 upper end scyewed joint, pump barrel 10 lower ends and oil-feed valve body 11 scyewed joint, second tube pole 1 lower end and last fuel-displaced valve body 27 scyewed joint, go up fuel-displaced valve body 27 and last delivery valve seat 29 movingly, go up fuel-displaced valve body 30 under fuel-displaced valve body 27 scyewed joint, following fuel-displaced valve body 30 and connecting tube valve body 33 scyewed joint.By last fuel-displaced valve body 27, go up fuel-displaced valve ball 28, go up delivery valve seat 29, down fuel-displaced valve body 30, down fuel-displaced valve ball 31, delivery valve seat 32 is formed upper and lower two outlet valves and is connected into one and constitutes the outlet valve assembly down.One-way valve assembly 34 is made up of spool, spring, plug screw, one-way valve valve body, spool, spring and one-way valve valve body movingly, plug screw and one-way valve valve body scyewed joint.Bulb is taken over 35 and is connected with the threaded one end of connecting tube valve body 33, bulb is taken over 35 and is connected movingly with upper ball base 36, lower ball base bar 39, upper ball base 36 and lower ball base bar 39 scyewed joint, locking nut 37 and lower ball base bar 39 scyewed joint play the effect that prevents that upper ball base 36 from becoming flexible.Seal by " o " type circle between lower ball base bar and piston 40 internal diameters, " v " type circle pressure ring 37 is used for the sealing of piston 40 between pump barrel, " v " type circle pressure ring, " o " type circle, piston 40 and lower ball base bar 39 are movingly, thin round nut 43, thick round nut 44 and lower ball base bar 39 scyewed joint, piston 40, " o " type circle 41 and piston seal assembly 42 are movingly.The scyewed joint of cushion pad 45 and oil-feed valve body 11, oil-feed valve seat 47 and oil-feed valve body 11 movingly, the outside thread of gland nut 48 connects with oil-feed valve body 11 internal threads.The other end internal thread of oil-feed valve body 11 and anti-sandpipe 12 scyewed joint, anti-sandpipe 12 has the filter sand oil inlet hole, and the sand control pipe thread connects sand control cap 13.During work, it is up that the second tube pole 1 of the asynchronous submersible electric motor of cylindrical linear drives piston 40, the piston upper chamber oil extraction, and cavity of resorption forms vacuum, and liquid backs down oil-feed valve ball 46 under the effect of pump inside and outside differential pressure, and liquid enters cavity of resorption.Second tube pole 1 drives piston 40 when descending, oil-feed valve ball 46 is closed, connect fuel-displaced valve ball 28,31 and connecting tube valve core opened, liquid enters piston 40 epicoeles, when piston 40 strokes arrive lower dead center, promptly finish epicoele oil-feed process, during second tube pole 1 to-and-fro motion, pump repeats above-mentioned circulation of advancing oil extraction work.
Mounting structure schematic representation when Fig. 5 is second scheme of the invention process, plug formula ring valve assembly and unidirectional ring valve assembly are installed in pump barrel inner carrier epicoele, plug formula ring valve body 50 usefulness screws 52 are fixed on the pump barrel 10, the lower end scyewed joint of unidirectional ring valve body 51 and second tube pole.Fig. 6 provides the structure of plug formula ring valve body 50, the ring valve member of being made up of spool 55, spring 56, swivel nut 57 is contained in the spool bore 65 interior plug formula ring valve assemblies of forming that plug formula ring valve body 50 has, valve body in the plug formula ring valve assembly and pump barrel 10 usefulness screws 52 are fixed on the pump barrel 10, valve body and pump barrel movingly, " o " type circle 53 is used for the sealing of the ring runner 54 between valve body 50 and the pump barrel 10.Fig. 7 provides the structure of unidirectional ring valve body 51, the unidirectional ring valve valve member of being made up of spool, spring, plug screw 61 is contained in and constitutes unidirectional ring valve assembly in the axial spool bore 67, have oil inlet hole 59 near pump barrel valve body outer radius, valve block internal diameter place near second tube pole has oil outlet 60, and press seal swivel nut 58 compresses " o " type circle and guarantees axial seal.
Fig. 8 is a motor upper tip structural representation, Fig. 9 is a motor upper tip structure sectional view, and the motor upper tip 6 among the figure has double-screw bolt consent 69, housing screw hole 70, end wire-feeding hold 71, stud hole 72, pressure ring jogger hole 73, end connection screw 74.
Embodiment: 1 oil diving electric valve pump
The asynchronous oil-submersible electric engine housing 7 external diameter Φ 114 of cylindrical linear, internal diameter Φ 100, second tube pole 1 lower end has the linked hole 26 of 4 Φ 8.
The rodless piston pump is made up of the pump housing, outlet valve assembly, connecting tube valve assembly, ball-joint assembly, piston assembly, oiling valve assembly; Pump barrel 10 external diameters 114, internal diameter 100, stroke 3m, lift are 1000m, with oil connection 2 upper end scyewed joint oil pipes, the lower end double-screw bolt connects motor upper tip 6, motor upper tip 6 scyewed joint electric machine casings 7, and electric machine casing 7 scyewed joint motor lower ends 8, motor lower end 8 double-screw bolts connect pump splice 9, pump splice 9 lower end scyewed joint pump barrels 10, pump barrel 10 scyewed joint oil-feed valve bodies 11, oil-feed valve body 11 scyewed joint are prevented sandpipe 12, anti-sandpipe 12 lower end scyewed joint sand control caps 13.
5 times/min of the minimum jig frequency of oil diving electric valve pump
-1, pump amount about 167m every day
3, 12 times/min of the highest jig frequency
-1, pump amount about 400m every day
3
Embodiment: 2 oil diving electric valve pumps
The pump barrel 10 inside and outside footpath size constancies of asynchronous oil-submersible electric engine housing 7 of cylindrical linear and rodless piston pump, second tube pole 1 lower end has the linked hole of 4 Φ 10.
The rodless piston pump is made up of the pump housing, plug formula ring valve assembly, outlet valve assembly, unidirectional ring valve assembly, ball-joint assembly, piston assembly, oiling valve assembly; In the pump barrel of rodless piston pump, increase plug formula ring valve assembly, replace the connecting tube valve assembly with unidirectional ring valve assembly.Plug formula ring valve body 50 is contained in the lower end near pump splice 9, is fixed on screw 52 on the inwall of pump barrel 10, and the lower end of unidirectional ring valve body 51 and second tube pole 1 scyewed joint, other application, working environment are constant, and discharge capacity is 1.5 times of single entry pumps.
Claims (7)
1, a kind of oil diving electric valve pump is characterized in that: be made of the asynchronous submersible electric motor of cylindrical linear, rodless piston pump, auxiliary coupling; There is oil inlet hole (26) second tube pole of the asynchronous submersible electric motor of cylindrical linear (1) lower end, and oil inlet hole (26) constitutes oil flow channel with second tube pole (1) internal diameter, piston upper chamber; Second tube pole (1) connects the piston rod of back as the rodless piston pump with last fuel-displaced valve body (27) in the rodless piston pump; The inner chamber of motor is filled with insulation, cutting oil; Pump splice (9) connects the pump housing that constitutes the rodless piston pump with pump barrel (10), pump barrel (10) with oil-feed valve body (11); Auxiliary coupling comprises oil connection (2), pump splice (9), oil-feed valve body (11), and wherein: the upper end of oil connection (2) connects oil pipe, and the lower end connects motor upper tip (6) with stud (4); Motor upper tip (6) lower end scyewed joint electric machine casing (7); Electric machine casing (7) lower end scyewed joint motor lower end (8); Motor lower end (8) connects with stud (4) with pump splice (9) upper end; Pump splice (9) lower end and pump barrel (10) scyewed joint, pump barrel (10) scyewed joint oil-feed valve body (11), oil-feed valve body (11) scyewed joint is prevented sandpipe (12), anti-sandpipe (12) scyewed joint sand control cap (13).
2, oil diving electric valve pump according to claim 1 is characterized in that: the asynchronous submersible electric motor of cylindrical linear that constitutes oil diving electric valve pump is by second tube pole (1), oil connection (2), flat cable head (3), stud (4), strain relief clamp (5), motor upper tip (6), electric machine casing (7), motor lower end (8), pump splice (9), " o " type circle (14), rod seal assembly (15), bearing housing (17), gland nut (18), upper press ring (19), disk-type winding (20), annular primary iron core (21), following retaining ring (22), sliding bearing (23), press seal swivel nut (25) is formed; Wherein: last fuel-displaced valve body (27) scyewed joint in second tube pole (1) and the rodless piston pump; Oil connection (2) scyewed joint oil pipe, motor upper tip (6) has double-screw bolt consent (69); " o " type circle (14) and rod seal assembly (15) are arranged in the Seal cage of motor upper tip (6) and pump splice (9); Bearing housing (17), gland nut (18), upper press ring (19), sliding bearing (23), annular primary iron core (21), disk-type winding (20), following retaining ring (22) are arranged in the motor; Bearing housing (17) and sliding bearing (23) are movingly; The interior housing screw of motor upper tip (6) tightens up annular primary iron core (21), disk-type winding (20) axially locating through pressure ring push rod, bearing housing (17), upper press ring (19), and gland nut (18) joins bearing housing (17) and sliding bearing (23) together.
3, oil diving electric valve pump according to claim 1 is characterized in that: the rodless piston pump that constitutes oil diving electric valve pump is made up of the pump housing, outlet valve assembly, connecting tube valve assembly, ball-joint assembly, piston assembly, oiling valve assembly; Wherein: pump splice (9) and pump barrel (10), pump barrel (10) and oil-feed valve body (11) scyewed joint; The outlet valve assembly is composed in series by upper and lower two outlet valves, and last fuel-displaced valve body (27) the scyewed joint second tube pole (1) in the assembly is gone up fuel-displaced valve body (27) and following fuel-displaced valve body (30) scyewed joint; The connecting tube valve assembly is made up of connecting tube valve body (33), one-way valve assembly (34), the following fuel-displaced valve body (30) in connecting tube valve body (33) the scyewed joint outlet valve assembly; The ball-joint assembly is made up of bulb adapter (35), upper ball base (36), locking nut (37), lower ball base bar (39), and bulb is taken over (35) scyewed joint connecting tube valve body (33); Piston assembly is made up of piston (40), piston seal assembly (42), " o " type circle (41), " v " type circle pressure ring (38), thin round nut (43), thick round nut (44), lower ball base bar (39) external diameter in piston (40), " v " type circle pressure ring (38), " o " type circle (41) and the ball-joint assembly movingly, thin round nut (43), thick round nut (44) scyewed joint lower ball base bar (39) are fixed into one with lower ball base bar (39) and piston (40); The oiling valve assembly is made up of oil-feed valve body (11), oil-feed valve ball (46), oil-feed valve seat (47), gland nut (48), and oil-feed valve body (11) also is the lower end cap of the pump housing; Between thick round nut (44) in the piston assembly and the oil-feed valve body (11) cushion pad (45) is arranged; Oil-feed valve body (11) in the oiling valve assembly and cushion pad (45), pump barrel (10) scyewed joint, oil-feed valve seat (47) and oil-feed valve body (11) are movingly.
4, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: the one-way valve assembly (34) in the connecting tube valve assembly in the rodless piston pump is made up of spool, spring, check valve body, plug screw, plug screw and check valve body scyewed joint, the connecting tube valve body (33) in check valve body and the connecting tube valve assembly is welded as a whole.
5, oil diving electric valve pump according to claim 1 is characterized in that: the rodless piston pump that constitutes oil diving electric valve pump is made up of the pump housing, plug formula ring valve assembly, outlet valve assembly, unidirectional ring valve assembly, ball-joint assembly, piston assembly, oiling valve assembly; Wherein, plug formula ring valve assembly is made up of plug formula ring valve body (50), " o " type circle (53), spool (55), spring (56), swivel nut (57); Wherein: plug formula ring valve body (50) is fixed on the pump barrel (10) with screw (52); Unidirectional ring valve assembly by unidirectional ring valve body (51), press seal swivel nut (58), " o " type circle, spool (55), spring (56), plug screw (61), form unidirectional ring valve body (51) scyewed joint second tube pole (1).
6, oil diving electric valve pump according to claim 1 or 5, it is characterized in that: plug formula ring valve body (50) external diameter in the rodless piston pump has ring runner (54), closure gasket groove (63), has spool bore (65), valve seat (64), fixing threaded hole (62) in the valve body (50).
7, oil diving electric valve pump rodless piston pump according to claim 1 or 5, it is characterized in that: on unidirectional ring valve body (51) external diameter in the rodless piston pump oil inlet hole (59) is arranged, spool bore (67) has been located oil outlet (60) in the spool bore (67) of the corresponding unidirectional ring valve body of second tube pole (1) (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021404828A CN1188598C (en) | 2002-07-16 | 2002-07-16 | Submerged-in-oil electric piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021404828A CN1188598C (en) | 2002-07-16 | 2002-07-16 | Submerged-in-oil electric piston pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1438424A CN1438424A (en) | 2003-08-27 |
| CN1188598C true CN1188598C (en) | 2005-02-09 |
Family
ID=27672193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021404828A Expired - Fee Related CN1188598C (en) | 2002-07-16 | 2002-07-16 | Submerged-in-oil electric piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1188598C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363437B (en) * | 2008-10-08 | 2010-06-02 | 蒋洪涛 | Downhole linear electric motor oil-well pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939348A (en) * | 2018-01-05 | 2018-04-20 | 西南石油大学 | A kind of multistage reciprocal synergy hoisting system of electromagnetic oil-production |
-
2002
- 2002-07-16 CN CNB021404828A patent/CN1188598C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363437B (en) * | 2008-10-08 | 2010-06-02 | 蒋洪涛 | Downhole linear electric motor oil-well pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1438424A (en) | 2003-08-27 |
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