CN110219622A - Oil extraction system under a kind of novel submersible electric screw pump sump - Google Patents
Oil extraction system under a kind of novel submersible electric screw pump sump Download PDFInfo
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- CN110219622A CN110219622A CN201910533740.4A CN201910533740A CN110219622A CN 110219622 A CN110219622 A CN 110219622A CN 201910533740 A CN201910533740 A CN 201910533740A CN 110219622 A CN110219622 A CN 110219622A
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- bearing
- screw pump
- oil
- oil pipe
- ring
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- 238000000605 extraction Methods 0.000 title claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000001012 protector Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 32
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 71
- 239000010779 crude oil Substances 0.000 description 14
- 238000005299 abrasion Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses oil extraction systems under a kind of novel submersible electric screw pump sump; including permanent magnet synchronous motor, protector, connector sleeve, flexible shaft one, screw pump stator, screw pump rotor, oil pipe one, pump box cupling, flexible shaft two, bearing housing, cylinder roller bearing, tandem cylindrical roller thrust bearing, ball bearing, spring, piston, transmission shaft and oil pipe two, the permanent magnet synchronous motor is electrically connected by the control terminal on oil-submersible cable and ground；The protector is arranged on permanent magnet synchronous motor the connector sleeve and is fixed on protector, and is sleeved on the outside of the output shaft of permanent magnet synchronous motor, offers inlet hole on connector sleeve；The setting of flexible shaft one can be sequentially connected in connector sleeve, and with the output shaft of permanent magnet synchronous motor；The screw pump stator is connected on connector sleeve；Longer life expectancy of the present invention, it is compact-sized.
Description
Technical field
The present invention relates to the technical field of oil-submerged electric screw pump, adopted under specially a kind of novel submersible electric screw pump sump
Oil system.
Background technique
Submersible screw pump oil extraction device is to directly drive screw pump using underground submersible motor to take crude oil to ground adopt
Oil tech.It combines the advantages of Rodless oil extraction system, downhole electrical motor driving and screw pump, is suitable for arranging thick liquid and containing solid
Phase liquid, and it is uniform flow, steady.
There are mainly three types of structure types for submersible screw pump oil extraction at present: one is a kind of more structure shapes of domestic and international application
Formula --- submersible motor acceleration and deceleration device imparts power to subsurface progressive cavity by retarder using submersible motor and realizes that crude oil is lifted
It rises；One is directly drive screw pump using four middlebrow submersible motor；The third is directly driven using permanent magnet synchronous motor
Dynamic screw pump.Three kinds of structure types are all made of the eccentric motion that universal joint holds axial force and adjusting screw rod pump.
In application process, fault point is concentrated mainly on retarder and universal joint above-mentioned three kinds of structure type.Retarder
Interior gear is failed due to broken teeth or adhesion wear, and needle bearing ruptures on retarder planet carrier；Weld is saved on universal joint
It disengages, since axial force is excessive, causes fixing bolt fracture fixing bolt fracture.
At present when studying submersible screw pump oil extraction device, the combination replacement that will use bearing block and flexible shaft is universal
Section, still, in previous research, most of flexible shaft is only setting one, and also without studying bearing group well
Reasonable plan causes flexible shaft axial force excessive, and bearing group is easily damaged, and greatly reduces the service life of extracting device of oil, bearing group
It is used for a long time in petroleum, bearing oil expanded by heating, how to solve the problems, such as that bearing oil expansion is also this field
Thorny problem.
Summary of the invention
The purpose of the present invention is to provide oil extraction systems under a kind of novel submersible electric screw pump sump, are eliminated using flexible link
Screw pump rotor radially wobbles, and substitutes the universal joint that current submersible screw pump oil extraction device uses using bearing group to carry axial direction
Power and elimination radially wobble structure, and solution is since Joint damage causes compressor emergency shutdown status, in bearing oil expanded by heating
When, piston is mobile to expand volume.
To achieve the above object, the invention provides the following technical scheme: a kind of novel submersible electric screw pumps down-hole oil production
System, including permanent magnet synchronous motor, protector, connector sleeve, flexible shaft one, screw pump stator, screw pump rotor, oil pipe one, pump
Box cupling, flexible shaft two, bearing housing, cylinder roller bearing, tandem cylindrical roller thrust bearing, ball bearing, spring, piston, biography
Moving axis and oil pipe two, in which:
The permanent magnet synchronous motor is electrically connected by the control terminal on oil-submersible cable and ground；
The protector is arranged on permanent magnet synchronous motor
The connector sleeve is fixed on protector, and is sleeved on the outside of the output shaft of permanent magnet synchronous motor, connection
It puts on and offers inlet hole；
The setting of flexible shaft one can be sequentially connected in connector sleeve, and with the output shaft of permanent magnet synchronous motor；
The screw pump stator is connected on connector sleeve；
The screw pump rotor setting can be sequentially connected in screw pump stator, and with flexible shaft one；
One end of the oil pipe one is sleeved in the opening of screw pump stator, and using pump box cupling that oil pipe one is fixed；
The setting of flexible shaft two can be sequentially connected in oil pipe one, and with the end of screw pump rotor；
The bearing housing offers the through-hole through upper and lower end face, and through-hole avoids the inner cavity of bearing housing, bearing
The lower end surface of cabinet is connected in the opening of oil pipe one, and through-hole is connected to the inner hole of oil pipe one, the bearing housing it is interior
Chamber includes the breathing space positioned at the mounting portion of front and positioned at rear portion, is open according to oil pipe one by closely to remote in the mounting portion
Sequence successively offer annular mounting groove one, annular mounting groove two and annular mounting groove three；
The cylinder roller bearing, tandem cylindrical roller thrust bearing and ball bearing setting are in annular mounting groove one, annular
In mounting groove two and annular mounting groove three；
The transmission shaft is fixed in cylinder roller bearing, tandem cylindrical roller thrust bearing and ball bearing, and
It can be sequentially connected with flexible shaft two, the inner hole of the tandem cylindrical roller thrust bearing, which is fixedly installed, unloads power ring, the power of unloading
Ring includes inner ring, outer ring and interconnecting piece, and the outer ring is fixed on tandem cylindrical roller thrust bearing inner hole, the connection
Portion be annular, and cross section be it is inverted trapezoidal, interconnecting piece is in the medial surface that the big lateral surface of area is fixed at outer ring
Portion, the interconnecting piece on the small medial surface of area is fixed in the middle part of the lateral surface of inner ring, between inner ring and outer ring there are
Gap, between bearing oil can accommodate the gap, inner ring is fixed on the corresponding position of transmission shaft；
The piston is slidably mounted in expansion chamber, and the medial surface of piston and expansion chamber seals, and piston is just
To being fixedly installed the hemispherical hollow convex block made of heat-resisting soft material on the end face of ball bearing；
The bottom of expansion chamber is arranged in the spring, and pushes piston to ball bearing, bearing oil is filled full
In space between the front end face and piston end surface of bearing housing inner cavity；
The opening sleeve of the oil pipe two is connected to, oil pipe two and ground on the upper end of bearing housing with through-hole
Oil extraction system connection.
Preferably, the exit of bearing housing is arranged in the О type sealing ring four and sealing ring, for sealing bearing housing
Gap between the outlet and transmission shaft of body.
Preferably, the front and rear of the side of piston is arranged in the О type sealing ring two and О type sealing ring three, to
Gap between sealing piston side and expansion chamber medial surface.
Further, the both ends of the screw pump rotor are inserted with the end of flexible shaft one and the end of flexible shaft two respectively
It connects, and is provided with upper box cupling and lower box cupling on the both ends of screw pump rotor, to realize and the end of flexible shaft one and soft
Property axis two end be connected.
Further, the bottom of the cushion chamber is additionally provided with spring adjustment component, and the spring adjustment component includes bottom
Ring, adjusting screw, bottom plate and О type sealing ring one, the bottom of the cushion chamber offer screw hole, and the base ring setting is buffering
The bottom of chamber, and it is concentric with screw hole, and the adjusting screw is screwed onto screw hole, and is protruded on the end in base ring and be fixedly installed
There is bottom plate, what the bottom plate loosened is contained in base ring, and the end of the spring is separable to be resisted against on bottom plate, the screw hole
Exit orifice on offer the annular groove concentric with screw hole, the О type sealing ring one is embedded in a ring groove, and end against
In the nut bottom surface of adjusting screw, the diameter of the annular groove is greater than the outer diameter of О type sealing ring one.
Preferably, the bearing housing is respectively provided with loop connecting end on upper and lower end, and at loop connecting end
Lateral surface offers screw thread, and the end of the oil pipe one and oil pipe two offers screw thread, and be screwed onto bearing housing it is cyclic annular even
It connects on end.
Compared with prior art, beneficial effects of the present invention are as follows:
The output of Surface power drive source is realized using permanent magnet synchronous motor, screw pump is directly driven and carries out crude oil suction, eliminate
Retarder.Power source is transferred to permanent magnet synchronous motor by oil-submersible cable by ground control system, permanent magnet synchronous motor output
Power is transferred to screw pump rotor by flexible link one, and then rotor rotation is driven to carry out crude oil suction, pressurized crude oil axis
The through-hole shape space for holding cabinet enters inside oil pipe two, finally enters surface gathering and transferring pipeline, compact-sized.System uses bearing
Group and two sections of flexible connection modes, make system axial carry and radially wobble elimination and carry out respectively, and axial force carrying design is being
Position where system upper end, that is, tandem cylindrical roller thrust bearing, optimization system stress form, so that other components be made to be in
Preferable working condition extends unit service life, and specific flexible shaft one and flexible shaft two are connected to screw pump rotor
Both ends can eliminate the radial force to transmission shaft and permanent magnet synchronous motor, and tandem cylindrical roller thrust bearing can carry axial force,
And cylinder roller bearing and ball bearing can guarantee the concentricity of transmission shaft, tandem cylindrical roller thrust bearing is main axial direction
The carrying unit of power, itself can have a large amount of abrasion, generate a large amount of heat, these heats can be such that tandem thrust cylindrical rolls
It sub- bearing and may be transmitted on transmission shaft, because key wear position is tandem cylindrical roller thrust bearing, its temperature is most
It is high, compare absorb high temperature transmission shaft so that cylinder roller bearing and ball bearing temperature it is lower, will result in transmission shaft with
Cylinder roller bearing and ball bearing and the cooperation of tandem cylindrical roller thrust bearing change, it is also possible to and cause concentricity to change, into
One step expands abrasion, and the present invention, which is arranged, unloads power ring, and there are gap, tandem cylindrical roller thrust bearing heat between inner ring and outer rings
Transmission efficiency is low, and the outer ring after being especially heated has enough geometric distortions, reduces tandem cylindrical roller thrust bearing heat production
Afterwards to the influence of bearing group.
Bearing oil can be pushed to be full of mounting portion by being pushed using spring, ensure that cylinder roller bearing, string
The lubricant effect of column cylindrical roller thrust bearing and ball bearing, after long-time merges use, bearing oil expanded by heating meeting
The elastic force for pushing piston overpowers spring, it is mobile to expansion chamber bottom, but at this point, the elastic force of spring is difficult to control, in order to by axis
It holds lubrication to be filled in mounting portion, the elastic force needs of spring are sufficiently large, but bearing oil is in face of sufficiently large elastic force
When spring, the pressure for expanding generation can not make piston fast reaction, cause the pressure of mounting portion inner shaft bearing lubrication oil excessive, living
Pressure result in plug adjustment mounting portion is poor, so having provided with convex block, convex block material is soft, high temperature resistant, pushes piston in spring,
When bearing oil is full of mounting portion, convex block can occupy certain space, to reduce the sky of bearing oil receiving
Between, reduce the dependence to the elastic force of spring, after bearing oil expanded by heating, overcomes convex block before this, reduce pressure, pusher
Piston is mobile, and the spring force of setting is smaller, and the backhaul of piston is fast, and adjustment is quicker, and effect is good.
The present invention is easy for installation, and operation is easy, is convenient for in-site installation application；It is suitable for exploiting viscosity height, the stream containing solid phase
Body.It can be applied to heavy oil wells, sand output well, inclined shaft, horizontal well, high-gas-contained well, wide adaptation range；Without sucker rod, eliminate because of bar
The loss of pipe abrasion bring, it is energy-saving；Cancel traditional retarder and universal joint, reduce the fault point, reduces price of complete machine cost,
Convenient for popularity application, permanent magnet synchronous motor is used；Using special carrying mechanism and flexible connection pattern, components be in compared with
Good berth state extends unit service life.
Detailed description of the invention
Fig. 1 is cross-sectional view of the present invention；
Fig. 2 is the cross-sectional view of bearing housing of the invention.
In figure: 1- submersible motor, 2- protector, 3- flexible shaft one, 4- screw pump stator, 5- screw pump rotor, 6- are flexible
The upper box cupling of axis two, 7-, 8- sealing ring, 9- cylinder roller bearing, 10- tandem cylindrical roller thrust bearing, 11- О type sealing ring
One, 12- spring, 13- oil pipe one, 14- piston, 15- О type sealing ring two, 16- О type sealing ring three, 17- ball bearing, 18- are passed
Box cupling, 24- connector sleeve, 25- under moving axis, 19- bearing housing, 20- О type sealing ring four, 21- oil pipe two, 22- pump box cupling, 23-
Through-hole, 26- mounting portion, the breathing space 27-, 28- annular mounting groove one, 29- annular mounting groove two, 30- annular mounting groove three, 31-
Convex block, 32- base ring, 33- adjusting screw, 34- bottom plate, 35- screw hole, 36- annular groove, 37- inner ring, 38- outer ring, 39- interconnecting piece,
40- loop connecting end.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Attached drawing is please referred to, the present invention provides a kind of technical solution: oil extraction system under a kind of novel submersible electric screw pump sump,
Including permanent magnet synchronous motor 1, protector 2, connector sleeve 24, flexible shaft 1, screw pump stator 4, screw pump rotor 5, oil pipe one
13, box cupling 22, flexible shaft 26, bearing housing 19, cylinder roller bearing 9, tandem cylindrical roller thrust bearing 10, ball bearing are pumped
17, spring 12, piston 14, transmission shaft 18 and oil pipe 2 21, in which:
The permanent magnet synchronous motor 1 is electrically connected by the control terminal on oil-submersible cable and ground, the work of permanent magnet synchronous motor 1
The feature of work can remove retarder.
The protector 2 is arranged on permanent magnet synchronous motor 1, and protector 2 can protect permanent magnet synchronous motor 1.
The connector sleeve 24 is fixed on protector 2, and is sleeved on the outside of the output shaft of permanent magnet synchronous motor 1,
Inlet hole is offered on connector sleeve 24, inlet hole is having the case where negative pressure petroleum can be sucked connector sleeve 24.
The setting of flexible shaft 1 can be sequentially connected in connector sleeve 24, and with the output shaft of permanent magnet synchronous motor 1,
That is permanent magnet synchronous motor 1 was directly inputted to before this on flexible shaft 1.
The screw pump stator 4 is connected on connector sleeve 24, further, screw pump stator 4 be with connector sleeve 24 and
The stationary part of permanent magnet synchronous motor 1 keeps being connected, not opposite displacement.
The setting of screw pump rotor 5 can be sequentially connected in screw pump stator 4, and with flexible shaft 1, that is to say, that
The rotary power of screw pump rotor 5 is from flexible shaft 1, rather than previous stiff shaft transmitting, the permanent magnetism in crude oil are same
When there is the resistance of crude oil, especially screw pump rotor 5 and rotate in step motor 1 and screw pump rotor 5, there are Radial resistant force,
The Radial resistant force can be transferred on permanent magnet synchronous motor 1 by the mode of previous stiff shaft transmitting, be caused to permanent magnet synchronous motor 1
Injury, and flexible shaft 1 can eliminate the Radial resistant force, protect permanent magnet synchronous motor 1.
One end of the oil pipe 1 is sleeved in the opening of screw pump stator 4, and uses pump box cupling 22 by oil pipe 1
Fixed, crude oil is entered in oil pipe 1, is conveyed.
The setting of flexible shaft 26 can be sequentially connected in oil pipe 1, and with the end of screw pump rotor 5, it is clear that soft
Property axis 26 can eliminate the Radial resistant force that screw pump rotor 5 is communicated up.
The bearing housing 19 offers the through-hole 25 through upper and lower end face, and through-hole 25 avoids the interior of bearing housing 19
Chamber, the lower end surface of bearing housing 19 are connected in the opening of oil pipe 1, and through-hole 25 is connected to the inner hole of oil pipe 1,
That is the crude oil entered in oil pipe 1 can be flowed by through-hole 25 to next structure, the quantity of certain through-hole 25
It can be designed with diameter, specific data design according to the actual situation, and the inner cavity of the bearing housing 19 includes being located at front
Mounting portion 26 and breathing space 27 positioned at rear portion, be open according to oil pipe 1 by closely to remote sequence in the mounting portion 26
Annular mounting groove 1, annular mounting groove 2 29 and annular mounting groove 3 30 are successively offered, the inner cavity of bearing housing 19 is tool
There is import, and import is to be closed, to prevent crude oil from entering in inner cavity, expansion chamber exists for bearing oil expansion
When reserved expansion outlet.
The cylinder roller bearing 9, tandem cylindrical roller thrust bearing 10 and ball bearing 17 are arranged in annular mounting groove one
28, in annular mounting groove 2 29 and annular mounting groove 3 30, that is to say, that cylinder roller bearing 9, tandem cylindrical roller thrust axis
Hold 10 and ball bearing 17 be arranged in mounting portion 26, when bearing oil is injected into the inner cavity of bearing housing 19, expansion
Chamber 27 can permit the space of bearing oil expansion, and still, excessive space prevents bearing oil from full of cylindrical roller
In bearing 9, tandem cylindrical roller thrust bearing 10 and ball bearing 17, cause lubricant effect unobvious, thus to expansion chamber 27 into
One step limits, to reach the purpose of adjustment 27 size of expansion chamber, specifically, the piston 14 is slidably mounted on expansion chamber 27
It is interior, and the medial surface of piston 14 and expansion chamber 27 seals, and piston 14 is fixedly installed on the end face of face ball bearing by resistance to
Hemispherical hollow convex block 31 made of high temperature soft material, is made specifically, convex block 31 can be of high temperature resistant silica gel, is subjected to
In 200-300 DEG C of high temperature, the bottom of expansion chamber 27 is arranged in the spring 12, and pushes piston 14 to ball bearing 17, with
Bearing oil is filled out in the space between 14 end face of the front end face for being filled in 19 inner cavity of bearing housing and piston, is mainly to fill up
In mounting portion 26, spring 12 is only set originally, but the intensity of the spring 12 is difficult to control, for example, for piston
14 can push bearing oil can be full of the space between 14 end face of front end face and piston of 19 inner cavity of bearing housing, spring
12 need enough intensity, but under the intensity, bearing oil needs that there is bigger temperature difference can just overcome spring 12
Elastic force pushes piston 14 mobile, also just virtually reduces the pressure Adjustment precision in the adjustment bearing housing 19 of piston 14, increases
Convex block 31 piston 14 compress bearing oil space when, can take up the space of certain volume, with reduce need
The elastic force of spring 12 compares with for not set convex block 31, and the elastic force of spring 13 is smaller, can equally fill bearing oil
Space between 14 end face of front end face and piston of full 19 inner cavity of bearing housing, meets the purpose of lubrication, in bearing lubrication oil temperature
When degree increases, convex block 31 is that the bearing oil made of resistance to high soft material, after expansion can first flatten convex block 31, to expand
Large space achievees the purpose that release swelling stress, and when bearing oil persistently increases, piston 14 can be pushed to expansion chamber 27
Bottom, the elastic force of spring 12 is smaller, and the mobile agility of piston 14 is higher, and the pressure in bearing housing 19 is adjusted precisely, institute
The bottom for stating cushion chamber 27 is additionally provided with spring adjustment component, specifically, spring adjustment adjustable 12 bottom of spring of component is arrived
The distance of 14 bottom surface of piston, that is, adjustable piston 14 is when blocking mounting portion 26, the support force of spring 12, the branch
Support force is smaller, and piston 14 is quicker, and the spring adjustment component includes that base ring 32, adjusting screw 33, bottom plate 34 and О type are close
Seal 1, the bottom of the cushion chamber 27 offer screw hole 35, and the bottom of cushion chamber 27, and and spiral shell is arranged in the base ring 32
Hole 35 with one heart, is fixedly installed bottom plate on the end that the adjusting screw 33 is screwed onto screw hole 35, and protrudes into base ring 32
34, what the bottom plate 34 loosened is contained in base ring 32, and the end of the spring 12 is separable against on the bottom sheet 34, described
The annular groove 36 concentric with screw hole 35 is offered in the exit orifice of screw hole 35, the О type sealing ring 1 is embedded in annular groove 36
It is interior, and end is resisted against the nut bottom surface of adjusting screw 33, and the diameter of the annular groove 36 is greater than О type sealing ring 1
Outer diameter, when rotating adjusting screw 33, adjusting screw 33 can pass in and out in screw hole 35, to drive bottom plate 34 in base ring 32
Interior movement, spring 12 is against on the bottom sheet 34, when bottom plate 34 is mobile, can adjustment spring 12 appropriate stroke,
So as to adjust support force, achieve the purpose that improve 14 precision of piston, in 33 spinning in and out of adjusting screw, nut portion
О type sealing ring 1 can be compressed, to guarantee that О type sealing ring 1 can block screw hole 35.
The transmission shaft 18 is fixed at cylinder roller bearing 9, tandem cylindrical roller thrust bearing 10 and ball bearing 17,
And it can be sequentially connected with flexible shaft 26, that is to say, that the radial force that screw pump rotor 5 rotates is eliminated by flexible shaft 26, only
Only by axial force transmission to transmission shaft 18, transmission shaft 18 is arranged in tandem cylindrical roller thrust bearing 10, tandem thrust
Cylinder roller bearing 10 is used to carry the axial force, cylinder roller bearing 9 and ball bearing 17 as the coaxial of adjustment transmission shaft 18
Degree uses, and is located at the front and rear part of transmission shaft 18, and the case where transmission shaft 18 rotates, tandem cylindrical roller thrust bearing 10 is held
Main axial force is carried, and stress point is moved up, a large amount of heat, part temperature can be generated on tandem cylindrical roller thrust bearing 10
Degree increases, this temperature is transferred to transmission shaft 18, or even is transferred to cylinder roller bearing 9 and ball bearing 17, causes cylinder rolling
Sub- bearing 9, tandem cylindrical roller thrust bearing 10, ball bearing 17 and 18 temperature of transmission shaft are uneven, especially transmission shaft 18 and string
Temperature difference between column cylindrical roller thrust bearing 10 can deposit between transmission shaft 18 and cylinder roller bearing 9 and ball bearing 17
In temperature difference, these temperature differences easily cause the cooperation between bearing and axis to deviate, and increase abrasion, cylindrical roller axis
The heat for holding 9 generations is maximum, reduces the heat transfer to transmission shaft 18, greatly reduces the presence of temperature difference, the tandem pushes away
The inner hole of power cylinder roller bearing 10, which is fixedly installed, unloads power ring, and the power of the unloading ring includes inner ring 37, outer ring 38 and interconnecting piece 39,
The outer ring 38 is fixed on 10 inner hole of tandem cylindrical roller thrust bearing, and the interconnecting piece 39 is annular, and cross section
To be inverted trapezoidal, interconnecting piece 39 is fixed in the middle part of the medial surface of outer ring 38 in the big lateral surface of area, the interconnecting piece
39 on the small medial surface of area is fixed in the middle part of the lateral surface of inner ring 37, there are gap between inner ring 37 and outer ring 38,
Between bearing oil can accommodate the gap, inner ring 37 is fixed on the corresponding position of transmission shaft 18, firstly, interconnecting piece 39
Bottom area is big, and the area on top is small, and when transmission shaft 18 transmits axial force, interconnecting piece 39 can firmly transmit the axis
Xiang Li, outer ring 38 are directly contacted with tandem cylindrical roller thrust bearing 10, absorb heat, in the heat transfer, interconnecting piece
39 thickness is enough, and transmission capacity is few, and most heat enters the bearing lubrication in the gap between inner ring 37 and outer ring 38
In oil, reduce the heat of inner ring 27, that is to say, that reduce the deformation quantity of transmission shaft 18, more, the rolling of tandem thrust cylindrical
Sub- 10 expanded by heating of bearing, outer ring 38 deform, and the gap between inner ring 37 and outer ring 38 is the deformation space, reduce after being heated
The abrasion loss of transmission shaft 18, improves service life.
The opening sleeve of the oil pipe 2 21 is connected to, oil pipe two on the upper end of bearing housing 19 with through-hole 25
21 receive the crude oil from through-hole 25, and are delivered to the oil extraction system on ground.
Specifically, the exit of bearing housing 19 is arranged in the О type sealing ring 4 20 and sealing ring 8, for sealing axis
Gap between the outlet of cabinet 19 and transmission shaft 18 is held, prevents crude oil from entering in bearing housing 19.
Specifically, the front of the side of piston 14 is arranged with after in the О type sealing ring 2 15 and О type sealing ring 3 16
Portion, to the gap between 27 medial surface of 14 side of sealing piston and expansion chamber.
Specifically, the both ends of the screw pump rotor 15 end with the end of flexible shaft 1 and flexible shaft 26 respectively
Grafting, that is to say, that the both ends of the screw pump rotor 15 are polygon, the end of flexible shaft 1 and the end of flexible shaft 26
Portion offers the polygon hole being adapted to therewith, the both ends insertion of screw pump rotor 15, the end of flexible shaft 1 and flexible shaft 26
End in, realize the transmitting of torque, and upper box cupling 7 and lower box cupling 23 are provided on the both ends of screw pump rotor 15,
It is connected with realizing with the end of flexible shaft 1 and the end of flexible shaft 26.
Specifically, the bearing housing 19 is respectively provided with loop connecting end 40 on upper and lower end, and connect in ring-type
It connects 40 lateral surfaces of end and offers screw thread, the end of the oil pipe 1 and oil pipe 2 21 offers screw thread, and is screwed onto bearing housing
On the loop connecting end 40 of body 19.
Working principle:
Permanent magnet synchronous motor 1 is controlled by the control terminal on ground, and provides power supply, permanent magnet synchronous motor 1 by power successively
It is transferred to flexible shaft 1, screw pump rotor 5, flexible shaft 26 and transmission shaft 18, screw pump rotor 5 is matched with screw pump stator 4
Under conjunction, crude oil is sucked by the inlet hole of connector sleeve 2, and crude oil passes sequentially through connector sleeve 2, oil pipe 1, screw pump stator 4, bearing
Through-hole 25, the oil pipe 2 21 of cabinet 19 enter the control terminal on ground.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. oil extraction system under a kind of novel submersible electric screw pump sump, which is characterized in that including permanent magnet synchronous motor, protector,
Connector sleeve, flexible shaft one, screw pump stator, screw pump rotor, oil pipe one, pump box cupling, flexible shaft two, bearing housing, cylinder rolling
Sub- bearing, tandem cylindrical roller thrust bearing, ball bearing, spring, piston, transmission shaft and oil pipe two, in which:
The permanent magnet synchronous motor is electrically connected by the control terminal on oil-submersible cable and ground；
The protector is arranged on permanent magnet synchronous motor
The connector sleeve is fixed on protector, and is sleeved on the outside of the output shaft of permanent magnet synchronous motor, on connector sleeve
Offer inlet hole；
The setting of flexible shaft one can be sequentially connected in connector sleeve, and with the output shaft of permanent magnet synchronous motor；
The screw pump stator is connected on connector sleeve；
The screw pump rotor setting can be sequentially connected in screw pump stator, and with flexible shaft one；
One end of the oil pipe one is sleeved in the opening of screw pump stator, and using pump box cupling that oil pipe one is fixed；
The setting of flexible shaft two can be sequentially connected in oil pipe one, and with the end of screw pump rotor；
The bearing housing offers the through-hole through upper and lower end face, and through-hole avoids the inner cavity of bearing housing, bearing housing
Lower end surface be connected in the opening of oil pipe one, and through-hole is connected to the inner hole of oil pipe one, the inner cavity packet of the bearing housing
Include the mounting portion positioned at front and breathing space positioned at rear portion, in the mounting portion according to the opening of oil pipe one by closely to remote suitable
Sequence successively offers annular mounting groove one, annular mounting groove two and annular mounting groove three；
The cylinder roller bearing, tandem cylindrical roller thrust bearing and ball bearing setting are in annular mounting groove one, annular installation
In slot two and annular mounting groove three；
The transmission shaft is fixed in cylinder roller bearing, tandem cylindrical roller thrust bearing and ball bearing, and with it is soft
Property axis two can be sequentially connected, and the inner hole of the tandem cylindrical roller thrust bearing, which is fixedly installed, unloads power ring, the power of the unloading ring packet
Inner ring, outer ring and interconnecting piece are included, the outer ring is fixed on tandem cylindrical roller thrust bearing inner hole, and the interconnecting piece is
Annular, and cross section be it is inverted trapezoidal, interconnecting piece is fixed in the middle part of the medial surface of outer ring in the big lateral surface of area, institute
Interconnecting piece is stated on the small medial surface of area is fixed in the middle part of the lateral surface of inner ring, there are gap between inner ring and outer ring,
Between bearing oil can accommodate the gap, inner ring is fixed on the corresponding position of transmission shaft；
The piston is slidably mounted in expansion chamber, and the medial surface of piston and expansion chamber seals, and piston is in face ball
The hemispherical hollow convex block made of heat-resisting soft material is fixedly installed on the end face of bearing；
The bottom of expansion chamber is arranged in the spring, and pushes piston to ball bearing, and bearing oil is filled out and is filled in axis
It holds in the space between the front end face of cabinets cavity and piston end surface；
The opening sleeve of the oil pipe two is connected on the upper end of bearing housing with through-hole, and oil pipe two is adopted with ground
Oil system connection.
2. oil extraction system under a kind of novel submersible electric screw pump sump according to claim 1, it is characterised in that: the О
The exit of bearing housing is arranged in type sealing ring four and sealing ring, stitches between the outlet of bearing housing and transmission shaft for sealing
Gap.
3. oil extraction system under a kind of novel submersible electric screw pump sump according to claim 2, it is characterised in that: the О
The front and rear of the side of piston is arranged in type sealing ring two and О type sealing ring three, in sealing piston side and expansion chamber
Gap between side.
4. oil extraction system under a kind of novel submersible electric screw pump sump according to claim 3, it is characterised in that: the spiral shell
The end grafting with the end of flexible shaft one and flexible shaft two respectively of the both ends of bar pump rotor, and the two of screw pump rotor
It is provided with box cupling and lower box cupling on end, is connected with realizing with the end of flexible shaft one and the end of flexible shaft two.
5. oil extraction system under a kind of novel submersible electric screw pump sump according to claim 4, it is characterised in that: described slow
The bottom for rushing chamber is additionally provided with spring adjustment component, and the spring adjustment component includes that base ring, adjusting screw, bottom plate and О type are close
Seal one, the bottom of the cushion chamber offer screw hole, and the bottom of cushion chamber is arranged in the base ring, and, institute concentric with screw hole
It states adjusting screw to be screwed onto screw hole, and protrudes on the end in base ring and be fixedly installed bottom plate, the appearance that the bottom plate loosens
It is contained in base ring, the end of the spring is separable to be resisted against on bottom plate, is offered in the exit orifice of the screw hole same with screw hole
The annular groove of the heart, the О type sealing ring one is embedded in a ring groove, and end is resisted against the nut bottom surface of adjusting screw, institute
The diameter for stating annular groove is greater than the outer diameter of О type sealing ring one.
6. oil extraction system under a kind of novel submersible electric screw pump sump according to claim 5, it is characterised in that: the axis
It holds cabinet and is respectively provided with loop connecting end on upper and lower end, and offer screw thread in loop connecting end lateral surface, it is described
The end of oil pipe one and oil pipe two offers screw thread, and is screwed on the loop connecting end of bearing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533740.4A CN110219622A (en) | 2019-06-19 | 2019-06-19 | Oil extraction system under a kind of novel submersible electric screw pump sump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533740.4A CN110219622A (en) | 2019-06-19 | 2019-06-19 | Oil extraction system under a kind of novel submersible electric screw pump sump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110219622A true CN110219622A (en) | 2019-09-10 |
Family
ID=67814034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910533740.4A Withdrawn CN110219622A (en) | 2019-06-19 | 2019-06-19 | Oil extraction system under a kind of novel submersible electric screw pump sump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523700A (en) * | 2020-11-30 | 2021-03-19 | 中国石油天然气集团有限公司 | Wire passing universal shaft assembly and wire passing method |
-
2019
- 2019-06-19 CN CN201910533740.4A patent/CN110219622A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523700A (en) * | 2020-11-30 | 2021-03-19 | 中国石油天然气集团有限公司 | Wire passing universal shaft assembly and wire passing method |
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Application publication date: 20190910 |