CN116163937A - Submersible plunger pump oil extraction machine - Google Patents
Submersible plunger pump oil extraction machine Download PDFInfo
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- CN116163937A CN116163937A CN202211712660.3A CN202211712660A CN116163937A CN 116163937 A CN116163937 A CN 116163937A CN 202211712660 A CN202211712660 A CN 202211712660A CN 116163937 A CN116163937 A CN 116163937A
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- 238000000605 extraction Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 230000008093 supporting effect Effects 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 230000000712 assembly Effects 0.000 claims description 24
- 238000000429 assembly Methods 0.000 claims description 24
- 230000009467 reduction Effects 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 53
- 125000006850 spacer group Chemical group 0.000 description 26
- 238000013461 design Methods 0.000 description 15
- 239000012530 fluid Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 230000001012 protector Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007659 motor function Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/12—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an oil extraction machine of a submersible plunger pump, which comprises a driving device, a reciprocating linear push-pull speed reducer and a plunger pump, wherein the driving device, the reciprocating linear push-pull speed reducer and the plunger pump are sequentially arranged from bottom to top; the upper end of the uppermost nut component is connected with a plunger supporting sleeve, and the upper end of the plunger supporting sleeve is in transmission connection with a plunger of the plunger pump; the invention has simple integral structure, reliable performance, low energy consumption and small volume, and can realize automatic succession and continuous working without interruption by adopting the matching of the main screw rod and a plurality of screw bodies, thereby greatly prolonging the integral service life.
Description
Technical Field
The invention belongs to the technical field of oil extraction machines, and particularly relates to an oil extraction machine with a submersible plunger pump.
Background
In the prior art, the oil field application at home and abroad adopts various machines, wherein the submersible plunger pump is most widely applied, when the submersible plunger pump is used as an oil extraction machine, the submersible plunger pump has the advantages of simple integral structure, low manufacturing cost, easy maintenance and large discharge capacity, and the main structure of the submersible plunger pump comprises a submersible motor, a linear push-pull device and a plunger pump.
The specific working mode is that the submersible motor, the linear push-pull device and the plunger pump are required to be sequentially arranged below the submersible motor and the plunger pump into an oil well, and the submersible motor drives the linear push-pull device to work so as to drive the plunger to reciprocate up and down; thereby pumping the well fluid in the well out of the well.
However, the existing plunger pump is complex in overall structure and small in torque, so that pumping pressure on well liquid is small, well depth is limited, and using effect is reduced.
In the technology, the driving device of the plunger pump adopts the submersible motor and the linear push-pull device, and when the plunger pump pumps well liquid in an oil well, the gravity of the well liquid can be applied to the plunger, and the gravity is transferred to the submersible motor and the power push rod of the linear push-pull device through force transfer, so that the power push rod is severely stressed, severely worn and scrapped when the plunger pump is lost to a certain extent, and the service life is reduced.
Disclosure of Invention
The invention aims to solve the main technical problem of providing the oil extraction machine with the submersible plunger pump, which has the advantages of simple integral structure, reliable performance, low energy consumption and small volume, and can realize automatic succession and continuous working without interruption by adopting the matching of the main screw rod and a plurality of screw bodies, thereby greatly prolonging the integral service life.
In order to solve the technical problems, the invention provides the following technical scheme:
the oil extraction machine comprises a driving device, a reciprocating linear push-pull speed reducer and a plunger pump which are sequentially arranged from bottom to top, wherein the reciprocating linear push-pull speed reducer comprises a planetary speed reducer, a power output end of the planetary speed reducer is in transmission connection with the linear speed reducer, the linear speed reducer comprises a first shell, a main screw rod is coaxially arranged in the first shell, at least two nut assemblies are arranged on the main screw rod, two adjacent nut assemblies are arranged at intervals and are connected through a connecting assembly, and linear guide bearing assemblies are respectively arranged on the uppermost nut assembly and the lowermost nut assembly; the upper end of the uppermost nut component is connected with a plunger supporting sleeve, and the upper end of the plunger supporting sleeve is in transmission connection with a plunger of the plunger pump.
The following is a further optimization of the above technical solution according to the present invention:
the nut assembly comprises a lifting nut sleeve sleeved on the main screw rod, the outer surface of the lifting nut sleeve is in sliding connection with the inner surface of the first shell, and a plurality of small studs are arranged between the inner part of the lifting nut sleeve and the main screw rod; the small stud is meshed with the main screw rod through a threaded part.
Further optimizing: the connecting assembly comprises connecting nuts arranged between two adjacent nut assemblies, the connecting nuts are coaxially sleeved on the main screw rod, the lower ends of the connecting nuts are fixedly connected with lifting nut sleeves of the nut assemblies below the connecting nuts, and the upper ends of the connecting nuts are movably connected with the lifting nut sleeves of the nut assemblies above the connecting nuts.
Further optimizing: the outer surface of the connecting nut is provided with a plurality of screw holes, screws are respectively arranged in the screw holes in a threaded manner, and strip holes are formed in positions, corresponding to the screws, of the lifting nut sleeve above the connecting nut; one end of the screw, which is far away from the connecting nut, extends into the strip hole.
Further optimizing: a reserved gap is arranged between the lower joint surface of the lifting nut sleeve above the connecting nut and the upper joint surface of the connecting nut; a reserved gap is arranged between the lower joint surface of the upper lifting nut sleeve and the upper joint surface of the lower lifting nut sleeve.
Further optimizing: the linear guide bearing assembly comprises a first bearing assembly and a second bearing assembly, the first bearing assembly is fixedly arranged on the uppermost nut assembly, and the first bearing assembly is fixedly connected with the plunger support sleeve; the second bearing assembly is fixedly arranged on the nut assembly at the lowest part, and the inner surface of the second bearing assembly and the main screw are distributed at intervals.
Further optimizing: the first bearing assembly comprises a first rolling body fixing seat and a connecting seat which are sequentially and integrally connected from top to bottom, and the first rolling body fixing seat and the connecting seat are respectively sleeved on the plunger support sleeve; the outer surface of the connecting seat is fixedly connected with the inner surface of the upper end of the corresponding lifting nut sleeve; the inner surface of connecting seat is fixed connection with the surface of plunger support sleeve.
Further optimizing: the outer circumferential surface of the first rolling body fixing seat is provided with a plurality of first limit grooves which are uniformly distributed along the outer circumferential surface of the first rolling body fixing seat; the first limiting grooves are respectively provided with a first steel ball, and the outer circumferential surface of the first rolling body fixing seat is fixedly provided with a first cover plate.
Further optimizing: the outer surface of the first rolling body fixing seat is in clearance fit with the inner surface of the first shell, sliding guide grooves are respectively formed in positions, corresponding to the first steel balls, on the inner surface of the first shell, and the outer parts of the first steel balls are arranged in the corresponding sliding guide grooves.
Further optimizing: the lower extreme of first shell is through connecting threaded head fixedly connected with bearing fixing base, and the lower extreme of main lead screw is connected with the transmission back shaft an organic whole, and the lower extreme of transmission back shaft extends to in the bearing fixing base, is provided with the location support bearing assembly between the surface of transmission back shaft and the bearing fixing base.
Further optimizing: the planetary reduction device comprises a second shell, the upper end of the second shell is fixedly connected with the lower end of the bearing fixing seat, a planet carrier is coaxially arranged in the second shell, and a sun gear is arranged in the middle of the planet carrier; a plurality of groups of planetary gear sets are arranged on the planet carrier, and a first annular gear is arranged on the inner surface of the second shell; the plurality of planet gears of each planetary gear set are respectively meshed with the first annular gear and the sun gear.
By adopting the technical scheme, the invention has ingenious conception and reasonable structure, two adjacent nut assemblies can be connected through the connecting assembly, and the main screw rod can drive the nut assemblies to move along the axial direction of the main screw rod by rotating; the uppermost nut component can drive the plunger to reciprocate in the plunger pump through the plunger supporting sleeve; when the abrasion loss of the first-stage nut assembly in the working process reaches the service life, the second-stage nut assembly replaces or is combined with the first-stage nut assembly to jointly bear the pushing and pulling force of the plunger pump to perform work, so that continuous work without interruption is automatically replaced, and the overall working life of the oil production machine of the submersible plunger pump is effectively prolonged.
The submersible motor of the submersible plunger pump oil extraction machine is combined with the reciprocating linear push-pull speed reducer by adopting a small-caliber submersible high-speed high-power permanent magnet motor (rated rotation speed is 3000-6000 r/min), so that the length of the submersible high-speed permanent magnet motor (generally only 1.2-2.5 m) is shortened by 70-80% compared with that of the small-caliber low-speed permanent magnet motor, the power is improved by 1-1.5 times (the power can reach 20-80 kw), the technical bottleneck that the small-caliber low-speed permanent magnet motor cannot be met due to the fact that the machine body is too long (generally 5-10 m) and the power is too small (generally the maximum power is lower than 20 kw) is thoroughly broken, and the motor function is seriously reduced or disabled after the length of the small-caliber low-speed permanent magnet motor exceeds 10 m.
The underground oil extraction space is narrow (usually in a 5-inch oil well casing), the ambient temperature is 80-150 ℃, the high pressure of the well fluid is 30-50 megapascals, and the oil composition is complex; once the fault well lifting operation needs several days to work once, the cost is only 5-15 ten thousand yuan directly, and the oil extraction loss is huge.
The design and manufacture of the reciprocating linear push-pull speed reducer effectively improve the reliability, long service life, high power, low energy consumption, high efficiency, small volume, safety, no pollution and the like of the oil extraction machine of the submersible plunger pump, and the future development can replace more than 50 percent of the existing ground oil extraction machine, can be widely applied to high-efficiency oil extraction of oil fields such as vertical wells, inclined wells, horizontal wells, ocean wells, lean wells, thin oil, thickened oil, sand-containing oil, oil-water mixed oil and oil fields containing complex chemical components and the like, and is a new technological revolution of the oil extraction industry.
The invention will be further described with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of a linear reduction device according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a partial enlarged view at B in FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 2 at C;
FIG. 6 is a partial schematic view of an embodiment of the present invention at a positioning support bearing assembly;
FIG. 7 is a partial schematic view of a planetary reducer according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a transmission rod according to an embodiment of the present invention.
In the figure: 22-a seal assembly holder; 23-supporting the spacer; 24-first well fluid medium combination seal; 25-connecting the sleeve; 26-adapter; 27-mounting a fixing seat; 28-connecting heads; 29-a transmission rod; 20-well fluid seal; 3-planetary reduction gear; 301-a second housing; 302-a sun gear; 303-a planet carrier; 304-planetary gears; 305-planetary pin shaft; 306-planetary gear bearing; 307-a first support bearing; 308-a second support bearing; 309-a first deep groove ball bearing; 310-bearing spacers; 311-a first circlip; 312-first ring gear; 313-output shaft; 314-a power shaft; 315-connecting the shell; 316-positioning a spacer; 317-second well fluid medium combination seal; 318-a second deep groove ball bearing; 319-a magnet assembly; 320-a second circlip; 321-a transmission spline housing; 4-a linear speed reduction device; 41-a first housing; 411-sliding guide slot; 42-main screw; a 43-nut assembly; 431-lifting the nut sleeve; 432-second ring gear; 433-positioning plate; 434-small studs; 435-elongated aperture; 44-a connection assembly; 441-a coupling nut; 442-screw holes; 443-screw; 401-bearing holders; 402-driving a supporting shaft; 403-double row tapered roller bearing; 404-a first bearing spacer; 405-second bearing spacers; 406-connecting the thread head; 407-bearing lock nut; 5-linear guide bearing assembly; 51-a first bearing assembly; 511-a first rolling element holder; 512-connecting seat; 513-a first steel ball; 514—a first cover plate; 515-set screw; 516-a first limit groove; 517-a first oil filler hole; 52-a second bearing assembly; 521-mounting seats; 522-a second rolling element holder; 523-a second steel ball; 524-a second cover plate; 525-connecting screws; 526-a second limit groove; 527-a second oil filler hole; 6-plunger support sleeve.
Detailed Description
As shown in fig. 1-8; the utility model provides a submersible plunger pump oil extraction machine, includes drive arrangement, reciprocal straight line push-pull reduction gear and the plunger pump that from bottom to top laid in proper order, and wherein reciprocal straight line push-pull reduction gear includes planetary reduction gear 3, and planetary reduction gear 3's power take off end transmission is connected with sharp decelerator 4, sharp decelerator 4 includes first shell 41, be provided with main lead screw 42 in the first shell 41 is coaxial, be provided with two at least nut subassemblies 43 on the main lead screw 42, be the interval layout between two adjacent nut subassemblies 43 and connect through coupling assembling 44, be provided with sharp direction bearing assembly 5 on the nut subassembly 43 of the top and the below respectively; the upper end of the uppermost nut assembly 43 is connected to the plunger support sleeve 6, the upper end of the plunger support sleeve 6 being in driving connection with the plunger of the plunger pump.
In this way, two adjacent nut assemblies 43 can be connected through the connecting assembly 44, and the main screw 42 can rotate to drive the plurality of nut assemblies 43 to move along the axial direction of the main screw 42.
And in use, the uppermost nut assembly 43 can drive the plunger to reciprocate within the plunger pump via the plunger support sleeve 6.
In this embodiment, the number of the nut assemblies 43 is two, and the two nut assemblies 43 are a first-stage nut assembly and a second-stage nut assembly in sequence from top to bottom.
In the initial state, as the push-pull force of the whole work of the plunger pump 2 is concentrated on the first-stage nut component, the second-stage nut component and the first-stage nut component are provided with a spacing distance, and then the second-stage nut component is not stressed in the initial state and only moves synchronously along with the first-stage nut component.
When the abrasion loss of the first-stage nut component in the working process reaches the service life, an abrasion gap is formed between the first-stage nut component and the main screw rod 42, the first-stage nut component can move downwards when the abrasion gap is overlarge, the first-stage nut component is contacted with the second-stage nut component, the working push-pull force of the plunger pump is automatically conducted onto the second-stage nut component, the second-stage nut component replaces or combines the first-stage nut component to jointly bear the push-pull force of the plunger pump to do work, automatic succession is realized, and the whole working life of the oil extraction machine of the submersible plunger pump is effectively prolonged.
Therefore, in the invention, the mutual rolling friction of the main screw rod and the small screw rod in the nut body is a weak point of the working life of the oil extraction machine of the submersible plunger pump through strict simulation and simulation, and the integral working life of the oil extraction machine of the submersible plunger pump can be effectively improved by strengthening or prolonging the continuous working life of the nut body.
In the invention, at least two nut assemblies 43 are continuously arranged on the main screw rod 42, and the two nut assemblies 43 can be used for carrying out successive succession and doing work in stages, so that the whole service life of the oil extraction machine of the submersible plunger pump can be effectively prolonged, and the use effect is improved.
In this embodiment, the number of the nut assemblies 43 may be three or four, and when in use, the nut assemblies 43 from the uppermost to the lowermost may be sequentially replaced in stages, so that the overall service life of the oil extraction machine of the radial submersible plunger pump can be effectively prolonged, and the use effect can be improved.
The nut assembly 43 includes a lifting nut sleeve 431 sleeved on the main screw 42, and a plurality of small studs 434 are disposed between the inside of the lifting nut sleeve 431 and the main screw 42.
The axis of the small stud 434 is parallel to the axis of the main screw 42.
The small stud 434 is engaged with the main screw 42 through a threaded portion.
The outer surface of the lifting nut case 431 is slidably coupled to the inner surface of the first housing 41.
In this way, the main screw 42 rotates to drive the lifting nut 431 to move along the axial direction of the main screw 42 through the engagement of the main screw 42 and the small stud 434.
A positioning disc 433 is fixedly installed at the two ends of the lifting nut sleeve 431, which are close to the small stud 434, and a second annular gear 432 is arranged at one side of the positioning disc 433, which is close to the small stud 434.
By means of the design, the small studs 434 can be installed inside the lifting nut sleeves 431 through the matching of the positioning disc 433 and the second annular gear 432, and assembly and installation are convenient.
The connecting assembly 44 includes a connecting nut 441 disposed between two adjacent nut assemblies 43, the lower end of the connecting nut 441 is fixedly connected with the lifting nut sleeve 431 of the nut assembly 43 below the connecting nut 441, and the upper end of the connecting nut 441 is movably connected with the lifting nut sleeve 431 of the nut assembly 43 above the connecting nut 441.
In this embodiment, the outer surface of the lower end of the connection nut 441 is provided with an external thread, the lifting nut sleeve 431 below the connection nut 441 is provided with an internal thread, and the lower end of the connection nut 441 is fixedly connected with the lifting nut sleeve 431 below in a threaded connection manner.
In this embodiment, the connection nut 441 is coaxially sleeved on the main screw 42, and the inner surface of the connection nut 441 is disposed at a distance from the outer surface of the main screw 42.
The outer surface of the connecting nut 441 is provided with a plurality of screw holes 442, and the axes of the screw holes 442 are perpendicular to the axis of the connecting nut 441.
A strip hole 435 is formed on the lifting nut cover 431 above the connecting nut 441 at a position corresponding to the screw 443.
The end of the screw 443 remote from the coupling nut 441 extends into the elongated aperture 435.
By such design, the upper end of the connecting nut 441 and the lifting nut sleeve 431 above the connecting nut 441 can be movably connected through the cooperation of the screw 443.
In this embodiment, the long axis length of the elongated hole 435 is 11mm; the short shaft length is 10mm; and the screw hole 442 has a diameter Φ10mm; the diameter of the screw 443 is phi 10mm, the whole structure of the screw 443 is that the outer surface of the lower section is provided with threads, the outer surface of the upper end of the screw 443 is a polished rod, and the polished rod part of the screw 443 is matched with the strip hole 435.
In this embodiment, a reserved gap is provided between the lower bonding surface of the lifting nut sleeve 431 above the connection nut 441 and the upper bonding surface of the connection nut 441, and the reserved gap is 0.5mm.
In this embodiment, a reserved gap of 0.5mm is provided between the lower bonding surface of the upper lifting nut cover 431 and the upper bonding surface of the lower lifting nut cover 431.
So designed, in use, in an initial state, the nut assembly 43 above the coupling nut 441 is maintained in engagement with the main screw 42, and the entire operating push-pull force of the plunger pump 2 is concentrated on the nut assembly 43.
And the upper lifting nut cover 431 moves in the axial direction of the main screw 42 by the engagement of the coupling nut 441 and the screw 443, the nut assembly 43 under the coupling nut 441 slides along.
When the abrasion loss of the upper nut component 43 reaches 0.5mm in operation, the movable gap between the upper nut component 43 and the connecting nut 441 is eaten by the abrasion loss, at the moment, the push-pull force of the operation of the plunger pump 2 is automatically conducted to the lower nut component 43, at the moment, the lower nut component 43 can replace or combine with the upper nut component 43 to jointly bear the push-pull force of the plunger pump 2 for working, thereby realizing automatic succession and continuous working without interruption and effectively prolonging the overall service life of the submersible plunger pump oil production machine.
The linear guide bearing assembly 5 comprises a first bearing assembly 51 and a second bearing assembly 52, wherein the first bearing assembly 51 is fixedly arranged on the uppermost nut assembly 43, and the first bearing assembly 51 is fixedly connected with the plunger support sleeve 6.
The second bearing assembly 52 is fixedly mounted on the lowermost nut assembly 43, and the inner surface of the second bearing assembly 52 is spaced from the main screw 42.
The first bearing assembly 51 includes a first rolling body fixing seat 511 and a connecting seat 512 that are sequentially integrally connected from top to bottom, and the first rolling body fixing seat 511 and the connecting seat 512 are respectively sleeved on the plunger support sleeve 6.
The outer surface of the connecting seat 512 is matched with the inner surface of the upper end of the corresponding lifting nut sleeve 431, and the two are fixedly connected.
The inner surface of the connecting seat 512 is matched with the outer surface of the plunger support sleeve 6, and the inner surface and the outer surface are fixedly connected.
In this embodiment, the outer surface and the inner surface of the connection seat 512 are respectively provided with threads, and the connection seat 512 is fixedly connected with the upper end of the corresponding lifting nut sleeve 431 and the plunger support sleeve 6 in a threaded connection manner.
The outer surface of the first rolling element holder 511 is in clearance fit with the inner surface of the first housing 41.
The outer circumferential surface of the first rolling body fixing seat 511 is provided with a plurality of first limit grooves 516, and the plurality of first limit grooves 516 are uniformly distributed along the outer circumferential surface of the first rolling body fixing seat 511.
The first limiting grooves 516 are respectively provided with a first steel ball 513, the outer circumferential surface of the first rolling body fixing seat 511 is fixedly provided with a first cover plate 514, and the first cover plate 514 is used for limiting and installing the first steel balls 513 in the corresponding first limiting grooves 516.
In this embodiment, the opening depth of the first limiting groove 516 is less than or equal to 6/10 of the diameter of the first steel ball 513; in use, 4/10 of the first steel ball 513 is mounted in the first limit groove 516, and 4/10 of the first steel ball 513 extends through the first cover plate 514 to the outside of the first cover plate 514.
And the first cover plate 514 can limit the position of the first steel ball 513, so that the first steel ball 513 is ensured not to fall off in the first limiting groove 516.
The inner surface of the first housing 41 is provided with sliding guide slots 411 at positions corresponding to the first steel balls 513, respectively, and the outer portions of the first steel balls 513 are disposed in the corresponding sliding guide slots 411.
By adopting the design, the circumferential position of the nut assembly 43 can be limited through the cooperation of the first steel ball 513 and the sliding guide slot 411, the nut assembly 43 is prevented from circumferential rotation, and the main screw 42 can drive the nut assembly 43 to axially move during rotation.
And the first steel ball 513 can rotate in the first limiting groove 516, and the first steel ball 513 and the sliding guide groove 411 can be matched to form a linear sliding rail, so that the movement of the nut assembly 43 is guided, the coaxiality between the nut assembly 43 and the first shell 41 is improved, and the using effect is improved.
In this embodiment, the number of the first limiting grooves 516 is six, the number of the first steel balls 513 is also six, and the six first steel balls 513 are respectively installed in the corresponding first limiting grooves 516, which is convenient for use.
The outer circumference of the first rolling body fixing seat 511 is further provided with a plurality of first screw holes, and the plunger support sleeve 6 is provided with second screw holes at positions corresponding to the first screw holes.
The first screw hole and the second screw hole are internally threaded and are connected with a set screw 515, and the connection effect between the plunger support sleeve 6 and the first rolling body fixing seat 511 can be improved through the set screw 515, so that the use effect is improved.
The first rolling element fixing seat 511 is provided with first oil holes 517 at positions near the first limiting grooves 516, respectively, and the first oil holes 517 penetrate through the inner surface of the first rolling element fixing seat 511.
By means of the design, the external lubricating oil enters the first limiting groove 516 through the first oil filling hole 517, and at the moment, when the first steel ball 513 moves in the first limiting groove 516, sufficient lubricating oil is ensured to lubricate, so that the use is convenient.
The inner surface of the first limiting groove 516 needs to be subjected to heat treatment to make the hardness of the inner surface of the first limiting groove 516 reach more than 62 degrees.
By means of the design, the overall structural strength of the first limiting groove 516 can be improved, and the service life of the device is prolonged.
The first steel ball 513 is a high-temperature-resistant and wear-resistant high-precision steel ball rolling body, and has a sliding friction life of 3-5 ten thousand hours.
The first cover plate 514 is subjected to heat treatment to achieve a hardness of 62 degrees or more.
By the design, the structural strength of the first cover plate 514 can be improved, so that the first cover plate 514 has high reliability, and normal operation of 3-5 ten thousand hours is ensured.
The diameter of the sliding guide slot 411 is phi 10mm; the processing depth is 3mm; the inner surface of the slide guide slot 411 also needs to be heat treated to have a hardness of 62 degrees in roh.
The second bearing assembly 52 includes a mounting bracket 521 and a second rolling element mount 522; the mounting seat 521 is sleeved on the main screw rod 42, and the second rolling element fixing seat 522 is fixedly mounted on the mounting seat 521.
The outer surface of the mounting seat 521 is matched with the inner surface of the lower end of the corresponding lifting nut sleeve 431, and the two are fixedly connected.
The inner surface of the mounting seat 521 is spaced from the inner surface of the main screw 42.
In this embodiment, an external thread is formed on the outer surface of the mounting seat 521, and the mounting seat 521 is fixedly connected with the lower end of the corresponding lifting nut sleeve 431 by a threaded connection manner.
The outer surface of the second rolling element holder 522 is in clearance fit with the inner surface of the first housing 41.
The outer circumferential surface of the second rolling body fixing seat 522 is provided with a plurality of second limiting grooves 526, and the plurality of second limiting grooves 526 are uniformly distributed along the outer circumferential surface of the second rolling body fixing seat 522.
A second steel ball 523 is respectively installed in the second limiting groove 526; a second cover plate 524 is fixedly mounted on the outer circumferential surface of the second rolling element fixing seat 522; the second cover plate 524 is used for limiting and installing the second steel ball 523 in the corresponding second limiting groove 526.
In this embodiment, the overall structures of the second limiting groove 526, the second steel ball 523 and the second cover plate 524 are the same as those of the first limiting groove 516, the first steel ball 513 and the first cover plate 514, and the outer portions of the second steel ball 523 are disposed in the corresponding sliding guide slots 411.
By adopting the design, the circumferential position of the nut assembly 43 can be limited through the cooperation of the second steel ball 523 and the sliding guide slot 411, the nut assembly 43 is prevented from circumferential rotation, and the main screw 42 can drive the nut assembly 43 to axially move during rotation.
And the second steel ball 523 can rotate in the second limiting groove 526, and the second steel ball 523 and the sliding guide slot 411 can form a linear sliding rail through matching, so that the movement of the nut assembly 43 is guided, the coaxiality between the nut assembly 43 and the first shell 41 is improved, and the use effect is improved.
The outer circumferential surface of the second rolling element fixing seat 522 is further provided with a plurality of third screw holes; a fourth screw hole is formed in the mounting seat 521 at a position corresponding to the third screw hole.
The third screw hole and the fourth screw hole are internally connected with a connecting screw 525, and the connecting effect between the second rolling body fixing seat 522 and the mounting seat 521 can be improved through the connecting screw 525, so that the using effect is improved.
The second rolling element fixing seat 522 is provided with second oil holes 527 at positions near the second limiting grooves 526, respectively, and the second oil holes 527 penetrate through the inner surface of the second rolling element fixing seat 522.
By means of the design, the external lubricating oil enters the second limiting groove 526 through the second oil filling hole 527, and at the moment, when the second steel ball 523 moves in the second limiting groove 526, sufficient lubricating oil is ensured to lubricate, so that the use is convenient.
It can be seen that the circumferential positions of the plurality of nut assemblies 43 can be positioned by the first bearing assembly 51 and the second bearing assembly 52, and the movement thereof can be guided, improving the use effect.
The upper end of the first housing 41 is provided with a packaging assembly for sealing the plunger support sleeve 6, the packaging assembly comprises a sealing assembly fixing seat 22 fixedly installed at the upper end of the first housing 41, and the sealing assembly fixing seat 22 is sleeved on the plunger support sleeve 6.
A first well fluid medium combination seal 24 is arranged between the inner surface of the seal assembly fixing seat 22 and the outer surface of the plunger support sleeve 6, and a support spacer 23 is arranged above the first well fluid medium combination seal 24; the supporting spacer 23 is sleeved on the plunger supporting sleeve 6.
The upper end of the seal assembly fixing seat 22 is in threaded connection with a connecting sleeve 25, the lower end face of the connecting sleeve 25 extends into the seal assembly fixing seat 22, and the end is in propping connection with the first well fluid medium combination seal 24.
The upper end of the connecting sleeve 25 is fixedly connected with an adapter 26, and the adapter 26 is fixedly connected with the connecting sleeve 25 in a threaded connection mode.
The upper end of the adapter 26 is fixedly connected with a mounting fixing seat 27, and the mounting fixing seat 27 is fixedly connected with the adapter 26 in a threaded connection mode.
The upper end of the plunger support sleeve 6 extends into the connecting sleeve 25, and the outer surface of the plunger support sleeve 6 and the connecting sleeve 25 are distributed at intervals.
The plunger support sleeve 6 is located at one end part in the connecting sleeve 25 and is fixedly provided with a connector 28, the upper end of the connector 28 is fixedly connected with a transmission rod 29, and the upper end of the transmission rod 29 penetrates through the adapter 26 and the installation fixing seat 27 and extends to the upper part of the installation fixing seat 27.
In this way, the plunger pump can be mounted above the mounting holder 27, and the transmission rod 29 is in driving connection with the plunger in the plunger pump.
When the plunger support sleeve 6 moves up and down axially, the plunger pump can be driven to work through the transmission action of the transmission rod 29, and the use is convenient.
A plurality of well liquid sealing elements 20 are arranged at the joint of the adapter 26 and the transmission rod 29, and the well liquid sealing elements 20 are connected with the outer surface of the transmission rod 29 in a sliding manner.
In this embodiment, the plunger pump and the plunger are both of the prior art and are commercially available.
The lower extreme fixedly connected with connection screw thread head 406 of first shell 41, the lower extreme fixedly connected with bearing fixing base 401 of connection screw thread head 406, the lower extreme integrated connection of main lead screw 42 has transmission back shaft 402, the lower extreme of transmission back shaft 402 extends to in the bearing fixing base 401, be provided with the location support bearing assembly between the surface of transmission back shaft 402 and the bearing fixing base 401.
External threads are formed on the outer surface of the connecting threaded head 406, and two ends of the connecting threaded head 406 are fixedly connected with the corresponding first housing 41 and bearing fixing seat 401 in a threaded connection manner.
The upper end surface of the connecting screw head 406 corresponds to the lower end surface of the second bearing assembly 52 in the first housing 41, and the axial limit position of the second bearing assembly 52 can be positioned by the connecting screw head 406 at this time, so that the use is convenient.
The transmission support shaft 402 and the main screw 42 are coaxially and integrally connected, and a positioning shaft shoulder is arranged at the joint of the transmission support shaft 402 and the main screw 42.
The positioning support bearing assembly comprises a plurality of double-row tapered roller bearings 403 sleeved on a transmission support shaft 402, and the plurality of double-row tapered roller bearings 403 are distributed at equal intervals.
The outer surfaces of the plurality of double row tapered roller bearings 403 are connected to the inner surface of the bearing holder 401.
A first bearing spacer 404 and a second bearing spacer 405 are arranged between two adjacent double-row tapered roller bearings 403, and the first bearing spacer 404 and the second bearing spacer 405 are coaxially arranged.
The outer surface of the first bearing spacer 404 is matched with the inner surface of the bearing holder 401, and the inner surface of the first bearing spacer 404 and the outer surface of the second bearing spacer 405 are arranged at intervals.
The second bearing spacer 405 is sleeved on the outer surface of the transmission support shaft 402.
The upper and lower ends of the first bearing spacer 404 and the second bearing spacer 405 are respectively abutted with the inner ring and the outer ring of the corresponding double-row tapered roller bearing 403.
By means of the design, the first bearing spacer 404 and the second bearing spacer 405 can be used for positioning the interval distance between two adjacent double-row tapered roller bearings 403, and the use is convenient.
The uppermost double-row tapered roller bearing 403 is in abutting connection with a shaft shoulder at the joint of the transmission support shaft 402 and the main screw rod 42, so that the axial position of the double-row tapered roller bearing 403 is positioned.
The lower end of the transmission support shaft 402 is in threaded connection with a plurality of bearing lock nuts 407, and the upper end surface of the bearing lock nuts 407 is in abutting connection with the lower end surface of the lowest double-row tapered roller bearing 403.
By means of the design, the axial positions of the double-row tapered roller bearings 403 can be positioned through the cooperation of the bearing lock nuts 407 and the shaft shoulders, and the double-row tapered roller bearings are convenient to use.
And can be used for supporting the transmission support shaft 402 and the main screw 42 for rotation and convenient use through a plurality of double row tapered roller bearings 403.
And the axial force on the main screw 42 and the transmission support shaft 402 can be transmitted to the double-row tapered roller bearing 403; at this time, the double-row tapered roller bearing 403 can block the axial force, so that the axial force on the transmission support shaft 402 is prevented from being transmitted into the planetary reduction gear 3, the use is convenient, and the use effect is improved.
The planetary reduction device 3 comprises a second housing 301, wherein the upper end of the second housing 301 is fixedly connected with the lower end of a bearing fixing seat 401, a planet carrier 303 is coaxially arranged in the second housing 301, and a sun gear 302 is arranged in the middle of the planet carrier 303.
In this embodiment, the upper end of the second housing 301 is fixedly connected to the lower end of the bearing fixing seat 401 by a threaded connection.
A plurality of groups of planetary gear sets are arranged on the planet carrier 303, and the plurality of groups of planetary gear sets are distributed at intervals along the height direction of the planet carrier 303.
Each set of planetary gear sets includes a plurality of planet gears 304, the plurality of planet gears 304 being annularly and spaced along the axis of the planet carrier 303.
A planetary pin shaft 305 is installed in the middle of the planetary gear 304, and two ends of the planetary pin shaft 305 are respectively in rotational connection with the planet carrier 303 through planetary gear bearings 306.
In this embodiment, the planetary gear sets are two sets, and the two sets of planetary gear sets are arranged in parallel and spaced from each other, and each set of planetary gear sets includes three to five planetary gears 304.
A first ring gear 312 is provided on the inner surface of the second housing 301 at a position close to the planetary gear 304, and the outer surface of the planetary gear 304 is engaged with the first ring gear 312.
The inner sides of the planetary gears 304 are respectively engaged with the sun gear 302 through teeth portions.
The sun gear 302 rotates to drive the planet carrier 303 to rotate through the planet gears 304, and the sun gear 302, the planet gears 304 and the first annular gear 312 are meshed with each other to realize deceleration rotation.
In this embodiment, the planetary gear bearing 306 is a prior art, and an integrated bearing may be used to rotationally connect two ends of the planetary pin 305 with the planet carrier 303.
An output shaft 313 is integrally connected to the upper end of the planet carrier 303, and the lower end of the transmission support shaft 402 extends into the second housing 301 and is coaxially and drivingly connected to the output shaft 313.
In this design, the rotation of the planet carrier 303 can drive the transmission support shaft 402 to rotate through the output shaft 313, and the rotation of the transmission support shaft 402 drives the main screw 42 to rotate, so that the use is convenient.
A second support bearing 308 is fixedly mounted on the outer surface of the output shaft 313, and the outer surface of the second support bearing 308 is in fit connection with the inner surface of the second housing 301.
In this embodiment, the lower end of the bearing holder 401 extends into the second housing 301, and the lower end surface of the bearing holder 401 abuts against the upper end surface of the second support bearing 308, so as to position the axial position of the second support bearing 308.
A first support bearing 307 is arranged between the lower end of the planet carrier 303 and the second housing 301, the first support bearing 307 is sleeved at the lower end of the planet carrier 303, and the outer surface of the first support bearing 307 is connected with the inner surface of the second housing 301 in a matching way.
By the design, the planet carrier 303 can be supported to rotate through the first support bearing 307 and the second support bearing 308, so that the planet carrier is convenient to use, and the coaxiality between the planet carrier 303 and the second housing 301 can be improved through the first support bearing 307 and the second support bearing 308, so that the using effect is improved.
In this embodiment, the first support bearing 307 and the second support bearing 308 are tapered roller bearings, and the tapered roller bearings can improve the supporting effect on the second housing 301, and then are used for blocking the axial force on the second housing 301, so as to improve the service effect and the service life.
The lower end of the sun gear 302 is coaxially and integrally connected with a power shaft 314, and one end of the power shaft 314 away from the sun gear 302 penetrates through the lower end of the planet carrier 303 and extends downwards for a distance.
A plurality of first deep groove ball bearings 309 are mounted at the inner lower end position of the carrier 303 and at a position close to the power shaft 314.
The first deep groove ball bearing 309 is sleeved on the power shaft 314, the inner surface of the first deep groove ball bearing 309 is in fit connection with the outer surface of the power shaft 314, and the outer surface of the first deep groove ball bearing 309 is in fit connection with the inner surface of the planet carrier 303.
A first circlip 311 is installed inside the planet carrier 303 and near the lower end position of the planet carrier, and positioning of the plurality of first deep groove ball bearings 309 is achieved through cooperation of the first circlip 311 and a shaft shoulder.
A bearing spacer 310 is disposed between the two adjacent first deep groove ball bearings 309, the bearing spacer 310 is sleeved on the power shaft 314, and two ends of the bearing spacer 310 are respectively abutted with the corresponding first deep groove ball bearings 309.
By means of the design, the axial position between two adjacent first deep groove ball bearings 309 can be located through the bearing spacer 310, and the use is convenient.
The lower end of the second housing 301 is fixedly connected with a connection housing 315, the lower end of the power shaft 314 extends into the connection housing 315, and a sealing assembly is disposed between the power shaft 314 and the connection housing 315.
In this embodiment, the lower end of the second housing 301 is fixedly connected to the connection housing 315 by a threaded connection, which is convenient for assembly and installation.
The seal assembly includes a second well fluid medium combination seal 317 that is sleeved on the power shaft 314, and an outer surface of the second well fluid medium combination seal 317 is in sealing connection with an inner surface of the connection housing 315.
And a positioning spacer 316 is sleeved on the power shaft 314 above and below the second well fluid medium combined seal 317 respectively, and positioning is realized between the positioning spacer 316 and the connecting housing 315 through shaft shoulder matching.
The positioning spacer 316 can be used for positioning the axial position of the second well fluid medium combination seal 317, so that the use is convenient.
A second deep groove ball bearing 318 is sleeved on the power shaft 314 above the second well fluid medium combination seal 317, an inner surface of the second deep groove ball bearing 318 is connected with an outer surface of the power shaft 314 in a matched manner, and an outer surface of the second deep groove ball bearing 318 is connected with an inner surface of the connection housing 315 in a matched manner.
A magnet assembly 319 is sleeved on the power shaft 314 above the second deep groove ball bearing 318, and the magnet assembly 319 is installed in the connection housing 315.
A second circlip 320 is installed on the inner surface of the connection housing 315 near the upper end surface of the magnet assembly 319, and the axial position of the magnet assembly 319 can be positioned by the second circlip 320, so that the use is convenient.
The lower extreme transmission of power shaft 314 is connected with transmission spline housing 321, transmission spline housing 321 installs in connecting housing 315, and realizes the location through the shaft shoulder cooperation between the upper end of transmission spline housing 321 and the connecting housing 315.
The transmission spline housing 321 rotates to drive the power shaft 314 to rotate, the power shaft 314 drives the sun gear 302 to rotate, and at the moment, the speed reduction transmission can be realized through the cooperation of the planetary gear sets, and the planet carrier 303 is driven to rotate.
The planetary frame 303 rotates to drive the transmission supporting shaft 402 to rotate through the output shaft 313, the transmission supporting shaft 402 rotates to drive the main screw rod 42 to rotate, the main screw rod 42 rotates to drive the nut component 43 to reciprocate axially, and at the moment, the nut component 43 can drive the plunger pump to work through the plunger supporting sleeve 6, so that the use is convenient.
The upper end of the plunger pump is connected with a lifting oil pipe, the lower end of the plunger pump is connected with a reciprocating linear push-pull speed reducer, and the petroleum well liquid is continuously lifted to the ground under the upward pushing and downward pulling bidirectional movement of the reciprocating linear push-pull speed reducer; the bidirectional movement can lift well liquid, the well descending depth can reach 7000m, and the displacement is 5-100 ㎥/d.
In the present embodiment, the reciprocating linear push-pull decelerator is composed of a planetary decelerator 3 and a linear decelerator 4, and the reduction ratio of the planetary decelerator 3 is 1:3.37 or 1:11.35.
In this embodiment, the driving device includes a submersible protector and a submersible high-speed permanent magnet motor (not shown in the figure); the submersible protector and the submersible high-speed permanent magnet motor are sequentially arranged below the planetary reduction device 3.
In this embodiment, the submersible protector and the submersible high-speed permanent magnet motor are both in the prior art, and the rotation speed of the submersible high-speed permanent magnet motor is as follows: rated rotation speed is 3000-6000 r/min; and the planetary reduction gear 3 can reduce the primary rotation speed of the submersible high-speed permanent magnet motor to 100-600 r/min, and the rotation torque is increased by 3-11 times.
The nut component 43 of the linear speed reducer 4 is fixedly connected with the plunger support sleeve 6, and the rotation force of large torque is converted into strong axial reciprocating linear push-pull force under the transmission of the main screw 42, so that the plunger pump is driven to work to lift the well fluid.
In the embodiment, the upper end of a submersible high-speed permanent magnet motor (rated rotation speed is 3000-6000 r/men and power is 20-80 kw) is connected with a submersible special protector, and the lower end of the submersible high-speed permanent magnet motor is connected with an underground sensor assembly body, so that a high-power source is provided for a plunger pump oil extraction machine.
In the embodiment, the submersible high-speed permanent magnet motor adopts the combination application of the small-caliber submersible high-speed high-power permanent magnet motor (rated rotation speed is 3000-6000 r/min) and the reciprocating linear push-pull speed reducer, so that the length of the submersible high-speed permanent magnet motor (generally only 1.2-2.5 m) is shortened by 70-80% compared with that of the small-caliber low-speed permanent magnet motor, the power is improved by 1-1.5 times (the power can reach 20-80 kw), the technical bottleneck that the oil extraction of the plunger pump cannot be met due to the fact that the machine body is too long (generally 5-10 m) and the power is too small (generally the maximum power is lower than 20 kw) is thoroughly broken, and the motor function is seriously reduced or disabled after the length of the small-caliber low-speed permanent magnet motor exceeds 10 m.
The underground oil extraction space is narrow (usually in a 5-inch oil well casing), the ambient temperature is 80-150 ℃, the high pressure of the well fluid is 30-50 megapascals, and the oil composition is complex; once the fault well lifting operation needs several days to work once, the cost is only 5-15 ten thousand yuan directly, and the oil extraction loss is huge.
The design and manufacture of the reciprocating linear push-pull speed reducer effectively improve the reliability, long service life, high power, low energy consumption, high efficiency, small volume, safety, no pollution and the like of the oil extraction machine of the submersible plunger pump, and the future development can replace more than 50 percent of the existing ground oil extraction machine, can be widely applied to high-efficiency oil extraction of oil fields such as vertical wells, inclined wells, horizontal wells, ocean wells, lean wells, thin oil, thickened oil, sand-containing oil, oil-water mixed oil and oil fields containing complex chemical components and the like, and is a new technological revolution of the oil extraction industry.
Alterations, modifications, substitutions and variations of the embodiments herein will be apparent to those of ordinary skill in the art in light of the teachings of the present invention without departing from the spirit and principles of the invention.
Claims (11)
1. The utility model provides a submersible plunger pump oil extraction machine, includes drive arrangement (1), reciprocal straight line push-and-pull reduction gear and the plunger pump that from bottom to top laid in proper order, its characterized in that: the reciprocating linear push-pull speed reducer comprises a planetary speed reducer (3), a linear speed reducer (4) is connected to a power output end of the planetary speed reducer (3) in a transmission manner, the linear speed reducer (4) comprises a first shell (41), a main screw (42) is coaxially arranged in the first shell (41), at least two nut assemblies (43) are arranged on the main screw (42), two adjacent nut assemblies (43) are distributed at intervals and are connected through a connecting assembly (44), and linear guide bearing assemblies (5) are respectively arranged on the uppermost nut assembly (43) and the lowermost nut assembly (43); the upper end of the uppermost nut component (43) is connected with a plunger supporting sleeve (6), and the upper end of the plunger supporting sleeve (6) is in transmission connection with the plunger of the plunger pump.
2. The submersible plunger pump oil production machine of claim 1, wherein: the nut assembly (43) comprises a lifting nut sleeve (431) sleeved on the main screw rod (42), the outer surface of the lifting nut sleeve (431) is in sliding connection with the inner surface of the first shell (41), and a plurality of small studs (434) are arranged between the inner part of the lifting nut sleeve (431) and the main screw rod (42); the small stud (434) is meshed with the main screw (42) through a threaded part.
3. The submersible plunger pump oil production machine according to claim 2, wherein: the connecting assembly (44) comprises connecting nuts (441) arranged between two adjacent nut assemblies (43), the connecting nuts (441) are coaxially sleeved on the main screw rod (42), the lower ends of the connecting nuts (441) are fixedly connected with lifting nut sleeves (431) of the nut assemblies (43) below the connecting nuts (441), and the upper ends of the connecting nuts (441) are movably connected with the lifting nut sleeves (431) of the nut assemblies (43) above the connecting nuts.
4. A submersible plunger pump oil production machine as claimed in claim 3 wherein: a plurality of screw holes (442) are formed in the outer surface of the connecting nut (441), screws (443) are respectively arranged in the screw holes (442) in a threaded mode, and long strip holes (435) are formed in positions, corresponding to the screws (443), of the lifting nut sleeve (431) above the connecting nut (441); the end of the screw (443) remote from the coupling nut (441) extends into the elongated hole (435).
5. The submersible plunger pump oil production machine of claim 4, wherein: a reserved gap is arranged between the lower joint surface of the lifting nut sleeve (431) above the connecting nut (441) and the upper joint surface of the connecting nut (441); a reserved gap is arranged between the lower joint surface of the upper lifting nut sleeve (431) and the upper joint surface of the lower lifting nut sleeve (431).
6. The submersible plunger pump oil production machine of claim 5, wherein: the linear guide bearing assembly (5) comprises a first bearing assembly (51) and a second bearing assembly (52), the first bearing assembly (51) is fixedly arranged on the uppermost nut assembly (43), and the first bearing assembly (51) is fixedly connected with the plunger support sleeve (6); the second bearing assembly (52) is fixedly arranged on the lowest nut assembly (43), and the inner surface of the second bearing assembly (52) and the main screw (42) are distributed at intervals.
7. The submersible plunger pump oil production machine of claim 6, wherein: the first bearing assembly (51) comprises a first rolling body fixing seat (511) and a connecting seat (512) which are sequentially and integrally connected from top to bottom, and the first rolling body fixing seat (511) and the connecting seat (512) are respectively sleeved on the plunger support sleeve (6); the outer surface of the connecting seat (512) is fixedly connected with the inner surface of the upper end of the corresponding lifting nut sleeve (431); the inner surface of the connecting seat (512) is fixedly connected with the outer surface of the plunger support sleeve (6).
8. The submersible plunger pump oil production machine of claim 7, wherein: the outer circumferential surface of the first rolling body fixing seat (511) is provided with a plurality of first limit grooves (516), and the first limit grooves (516) are uniformly distributed along the outer circumferential surface of the first rolling body fixing seat (511); a first steel ball (513) is respectively arranged in the first limiting groove (516), and a first cover plate (514) is fixedly arranged on the outer circumferential surface of the first rolling body fixing seat (511).
9. The submersible plunger pump oil production machine of claim 8, wherein: the outer surface of the first rolling body fixing seat (511) is in clearance fit with the inner surface of the first shell (41), sliding guide grooves (411) are respectively formed in positions, corresponding to the first steel balls (513), on the inner surface of the first shell (41), and the outer parts of the first steel balls (513) are arranged in the corresponding sliding guide grooves (411).
10. The submersible plunger pump oil production machine of claim 9, wherein: the lower extreme of first shell (41) is through connecting threaded head (406) fixedly connected with bearing fixing base (401), and the lower extreme of main lead screw (42) is connected with transmission back shaft (402) an organic whole, and the lower extreme of transmission back shaft (402) extends to in bearing fixing base (401), is provided with location support bearing assembly between the surface of transmission back shaft (402) and bearing fixing base (401).
11. The submersible plunger pump oil production machine of claim 10, wherein: the planetary reduction device (3) comprises a second shell (301), wherein the upper end of the second shell (301) is fixedly connected with the lower end of a bearing fixing seat (401), a planet carrier (303) is coaxially arranged in the second shell (301), and a sun gear (302) is arranged in the middle of the planet carrier (303); a plurality of groups of planetary gear sets are arranged on the planet carrier (303), and a first annular gear (312) is arranged on the inner surface of the second shell (301); a plurality of planet gears (304) of each set of planet gears are in meshed connection with a first ring gear (312) and a sun gear (302), respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712660.3A CN116163937B (en) | 2022-12-30 | 2022-12-30 | Submersible plunger pump oil extraction machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712660.3A CN116163937B (en) | 2022-12-30 | 2022-12-30 | Submersible plunger pump oil extraction machine |
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| CN116163937A true CN116163937A (en) | 2023-05-26 |
| CN116163937B CN116163937B (en) | 2024-02-06 |
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| US20210102449A1 (en) * | 2017-07-12 | 2021-04-08 | Oklas Technologies Limited Liability Company [Ru/Ru] | Drive of a downhole pump |
| CN216472003U (en) * | 2021-11-29 | 2022-05-10 | 北京铁道工程机电技术研究所股份有限公司 | Safe nut mechanism and car lifting jack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1450248A (en) * | 2003-05-15 | 2003-10-22 | 黑龙江永磁机电设备制造有限公司 | Electric submerged screw oil-pumping machine |
| CN201103384Y (en) * | 2007-08-24 | 2008-08-20 | 高新华 | Plunger type oil pumping machine driven by oil-submersible motor |
| CN201943926U (en) * | 2011-01-25 | 2011-08-24 | 夏志富 | Novel power-driven oil-submersible lifting plunger piston defueling pump |
| RU2532641C1 (en) * | 2013-06-13 | 2014-11-10 | Закрытое акционерное общество "ПАРМ-ГИНС" | Submersible pump set |
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| CN116163937B (en) | 2024-02-06 |
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