CN2564777Y - Oil-submersible electric piston pump - Google Patents
Oil-submersible electric piston pump Download PDFInfo
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- CN2564777Y CN2564777Y CN 02241765 CN02241765U CN2564777Y CN 2564777 Y CN2564777 Y CN 2564777Y CN 02241765 CN02241765 CN 02241765 CN 02241765 U CN02241765 U CN 02241765U CN 2564777 Y CN2564777 Y CN 2564777Y
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Abstract
The utility model 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; the secondary pipe rod is connected with an upper oil outlet valve body in the rodless piston pump, which can be 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 utility model 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
The utility model belongs to oil recovery machiner equipment, particularly be the oil diving electric valve pump that constitutes by auxiliary coupling by the asynchronous submersible electric motor of cylindrical linear and rodless piston pump.
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 rodless pumping operation machinery.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 find at present the asynchronous submersible electric motor of cylindrical linear is combined the oil diving electric valve pump that the formation down-hole oil production is used with the rodless piston pump.
The utility model purpose is the advantage that is combined with bar oil recovery machiner and rodless pumping operation machinery, design a kind of oil diving electric valve pump, constitute oil diving electric valve pump by asynchronous submersible electric motor of cylindrical linear and rodless piston 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 utility model 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 technological scheme that its technical problem that solves the utility model adopts 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 design of the asynchronous submersible electric motor of cylindrical linear need solve three problems of heat radiation, sealing, thrust of motor: the piston rod of second tube pole as the rodless piston pump; Lower end at second tube pole has oil inlet hole, oil inlet hole communicates as liquid chunnel with second tube pole internal diameter, piston upper chamber, makes the liquid of suction enter the second tube pole internal diameter, discharges 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; At motor cavity pack into cooling, insulation lubricant oil, the pump splice inner chamber fills lubricating grease, is used to strengthen the sealing, cooling of the asynchronous submersible electric motor second tube pole of cylindrical linear and lubricated.
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, upper press ring, compress push rod, disk-type winding, annular primary iron core, retaining ring, sliding bearing, press seal swivel nut are formed down.Oil connection also is the upper end cap of motor, the scyewed joint oil pipe.The motor upper tip has the double-screw bolt consent, there are " o " type circle, piston seal assembly that second tube pole is formed the upper end sealing in the Seal cage of motor upper tip, have " o " type circle, piston seal assembly, press seal swivel nut that the lower end of second tube pole is sealed in the Seal cage of lower end pump splice.Pump splice also is the lower end cap of motor, in have the dress lubricating grease oil pocket.Bearing housing, gland nut, upper press ring, sliding bearing, annular primary iron core, disk-type winding, following retaining ring are arranged in the motor, and bearing housing and sliding bearing are movingly; In the motor upper tip, through pressure ring push rod, bearing housing, upper press ring annular primary iron core, disk-type winding axially locating are tightened up, bearing housing and sliding bearing are joined together with gland nut with housing screw.Dress is set upright stop collar in the second tube pole upper end, plays the leading role of setting upright to second tube pole; Oil connection connects with stud with pump splice with motor upper tip, motor lower end, 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.Be filled with insulation, cutting oil in the motor, the pump splice inner chamber is equipped with lubricating grease.Second tube pole is one of motor male part, and internal diameter is a liquid chunnel, and there are screw thread, oil inlet hole in the lower end, the oil inlet hole formation oil flow channel that communicates with piston upper chamber, and second tube pole and outlet valve sports association connect the piston rod that the back forms piston.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 to electric energy of recovering the oil.
The working principle of the asynchronous submersible electric motor of cylindrical linear 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 the check valve body in connecting tube valve body and the one-way valve assembly is 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, between valve seat, valve ball, the valve body movingly, 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; 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 has oil connection, pump splice, oil-feed valve body, anti-sandpipe, sand control cap, and the oil connection upper end connects with tubing round thread, and 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, and the oil-feed valve body lower end connects with anti-sandpipe upper end snail line.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 is connected the pump barrel of rodless piston pump by 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.
The utility model 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.The utlity model has 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 and rodless piston pump are connected by auxiliary coupling to constitute oil diving electric valve pump be maximum contribution of the present utility model.
The utility model 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.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the utility model overall structure schematic appearance;
Fig. 2 is the asynchronous submersible electric motor structural representation of cylindrical linear in the utility model;
Fig. 3 is the utility model rodless piston pump structure schematic representation;
Fig. 4 is the structural representation of second tube pole among Fig. 2;
Fig. 5 is a motor upper tip structural representation among Fig. 2.
：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 54 55
Fig. 1 provides the utility model overall appearance structure;
Fig. 2 is the asynchronous submersible electric motor structural representation of cylindrical linear in the utility model, and oil connection 2 has internal thread to connect the outside thread of oil pipe as shown in the figure, connects with motor upper tip 6 usefulness stud 4.Second tube pole 1 and sliding bearing 23 movingly, the lower end has outside thread to connect with last fuel-displaced valve body 27 in the rodless piston pump, the lower end has 2-4 Φ 8-12 oil inlet hole 26 to communicate with piston upper chamber, sees Fig. 4.Motor upper tip 6, electric machine casing 7, motor lower end 8, disk-type winding 20, annular primary iron core 21 constitute the basis part of motor.Rod seal assembly 15 is contained in the Seal cage of second tube pole 1 and motor upper tip 6, pump splice 9, and the Seal cage domestic demand of motor lower end pump splice 9 compresses black box with press seal swivel nut 25.In pump splice 9 inner chambers lubricating grease 24 is housed, double-screw bolt consent 50 screw threads of double-screw bolt plug 16 and the motor upper tip shutoff oilhole that links is seen the structural representation of Fig. 5 motor upper tip 6.Motor upper tip 6 outside threads connect with electric machine casing 7 upper ends, and electric machine casing 7 lower end internal threads connect with motor lower end 8, and motor lower end 8 connects with pump splice 9 usefulness stud 4.Motor upper tip 6, " o " type circle 14, rod seal assembly 15 form second tube pole 1 upper shaft radial seal, and the upper end internal thread of second tube pole 1 connects sets 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 52 through the inlet wire groove in motor upper tip 6, sees Fig. 5, is connected with disk-type winding 20, makes flat cable head 3 fixing by screw, strain relief clamp 5.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 in the utility model, pump splice 9 outside threads connect with pump barrel 10 upper ends, pump barrel 10 lower end internal threads connect with oil-feed valve body 11, the outside thread of second tube pole 1 lower end connects with last fuel-displaced valve body 27, go up fuel-displaced valve body 27 and last delivery valve seat 29 movingly, fuel-displaced valve body 27 on following fuel-displaced valve body 30 scyewed joint, following fuel-displaced valve body 30 connects with connecting tube valve body 33.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, formation 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 adapter 35 and upper ball base 36, lower ball base bar 39 are movingly, 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, " o " type circle, piston 40 and lower ball base bar 39 approach round nut 43, thick round nut 44 and lower ball base bar 39 scyewed joint movingly.The outside thread of cushion pad 45 connects with 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 of oil-feed valve body 11 and anti-sandpipe 12 scyewed joint, anti-sandpipe 12 has the filter sand oil inlet hole, anti-sandpipe 12 scyewed joint sand control caps 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.
Fig. 5 is the structure of the utility model motor upper tip 6, motor upper tip 6 upper ends connect with oil connection 2 usefulness stud 4, lower end and electric machine casing 7 scyewed joint, there are housing screw hole 51, pressure ring jogger hole 54, stud hole 53 in the termination, and the side has double-screw bolt consent 50, flat cable head wire-feeding hold 52.
Embodiment: 1 oil diving electric valve pump
Asynchronous oil-submersible electric engine housing 7 external diameters of cylindrical linear are Φ 114, and internal diameter is Φ 100, and second tube pole 1 lower end has the oil inlet hole 26 of 4 Φ 10.
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; The external diameter Φ 114 of pump barrel 10, internal diameter Φ 100, stroke 3m, lift is 1000m, with oil connection 2 upper end scyewed joint oil pipes, the lower end double-screw bolt connects screw thread motor upper tip 6, motor upper tip 6 scyewed joint electric machine casings 7, 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
Claims (9)
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) and pump barrel (10), pump barrel (10) connect the pump housing that constitutes the rodless piston pump 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; The lower end scyewed joint oil-feed valve body (11) of pump barrel (10), 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 (50); " o " type circle (14) and rod seal assembly (15) are arranged in the Seal cage of motor upper tip (6) and pump splice (9), and the rod seal assembly in pump splice (9) Seal cage compresses with press seal swivel nut (25); 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, and bearing housing (17) and sliding bearing (23) are movingly; Housing screw 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) in motor upper tip (6); 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; Be composed in series by upper and lower two outlet valves in the outlet valve assembly; 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 in the connecting tube valve assembly; Bulb in the ball-joint assembly is taken over (35) scyewed joint connecting tube valve body (33), thin round nut (43), thick round nut (44) scyewed joint in lower ball base bar (39) in the ball-joint assembly and the piston assembly.
4, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: in the rodless piston pump outlet valve of upper and lower two series connection of outlet valve assembly comprise fuel-displaced valve body (27), go up fuel-displaced valve ball (28), go up delivery valve seat (29), fuel-displaced valve body (30), fuel-displaced valve ball (31), delivery valve seat (32) down down down; Go up fuel-displaced valve body (30) under fuel-displaced valve body (27) scyewed joint, between valve body, valve ball, the valve seat movingly.
5, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: the connecting tube valve assembly in the rodless piston pump is made up of connecting tube valve body (33), one-way valve assembly (34), and one-way valve assembly (34) comprises 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, connecting tube valve body (33) and check valve body are welded as a whole.
6, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: form by bulb adapter (35), upper ball base (36), locking nut (37), lower ball base bar (39) in the ball-joint assembly in the rodless piston pump; Bulb is taken over (35) and upper ball base (36), lower ball base bar (39) movingly, and upper ball base (36) and lower ball base bar (39) scyewed joint are sealed by " o " type circle between lower ball base bar and piston (40) internal diameter.
7, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: the piston assembly in the rodless piston pump 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 (43); Lower ball base bar external diameter and piston (40), " v " type circle pressure ring (38), " o " type circle (41) are movingly.
8, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: the oiling valve assembly in the rodless piston pump is made up of oil-feed valve body (11), oil-feed valve ball (46), oil-feed valve seat (47), gland nut (48); Oil-feed valve seat (47) and oil-feed valve body (11) are movingly.
9, according to claim 1 or 3 described oil diving electric valve pumps, it is characterized in that: between the thick round nut (44) in oiling valve assembly and the piston assembly cushion pad (45) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241765 CN2564777Y (en) | 2002-07-16 | 2002-07-16 | Oil-submersible electric piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241765 CN2564777Y (en) | 2002-07-16 | 2002-07-16 | Oil-submersible electric piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564777Y true CN2564777Y (en) | 2003-08-06 |
Family
ID=33714541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02241765 Expired - Lifetime CN2564777Y (en) | 2002-07-16 | 2002-07-16 | Oil-submersible electric piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564777Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of sand control piston for oil immersion line motor |
-
2002
- 2002-07-16 CN CN 02241765 patent/CN2564777Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of sand control piston for oil immersion line motor |
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