CN109488581A - The mutual balanced linear drive pumping unit control system of one machine twin-well and oil rig - Google Patents
The mutual balanced linear drive pumping unit control system of one machine twin-well and oil rig Download PDFInfo
- Publication number
- CN109488581A CN109488581A CN201811061520.8A CN201811061520A CN109488581A CN 109488581 A CN109488581 A CN 109488581A CN 201811061520 A CN201811061520 A CN 201811061520A CN 109488581 A CN109488581 A CN 109488581A
- Authority
- CN
- China
- Prior art keywords
- pumping unit
- drive pumping
- direct drive
- screw
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
Abstract
The present invention relates to technical field of oil production engineering, the mutual balanced linear drive pumping unit control system of a machine twin-well and oil rig used in a kind of oil field are particularly belonged to.The problem of present invention solves that tower-type direct drive pumping unit structure is more complex, and bulk life time is shorter, safety is poor, needs prefabricated oil-pump base, and reverse power generation is unable to get effective use.It is made of a set of direct drive pumping unit control system (1), two direct drive pumping units (2).The present invention is simple with structure, transmission parts are few, is easy to transport and install, is not necessarily to prefabricated oil-pump base, reverse power generation can be utilized effectively in pumping unit operational process, system service life can be improved, save energy consumption, the advantages that equipment dependability is high, and operating cost is lower.
Description
Technical field
The present invention relates to technical field of oil production engineering, particularly belongs to the mutual balanced linear of a machine twin-well used in a kind of oil field and drive
Control system for oil-pumping unit and oil rig.
Background technique
For beam pumping unit manufacturing cost is high, structure is complicated, stroke jig frequency adjusts difficult, overall system efficiency is low etc.
Problem, domestic development have gone out the tower-type direct drive pumping unit balanced using balance counterweight mode, its Pumping Unit still compared with
Complexity, transmission parts are more, need prefabricated oil-pump base, and bulk life time is shorter, safety is poor, and reverse power generation is unable to get
Effective use, causes the wasting of resources, while causing to impact to control system and power supply grid.
Summary of the invention
Relatively easy the purpose of the present invention is designing a kind of structure, transmission parts are few, are not required to prefabricated oil-pump base, safety
Property it is higher, two mouthfuls of oil well reverse power generations can be utilized mutually, and the mutual balanced linear of a machine twin-well that can reduce pumping unit energy consumption, which drives, to be taken out
Oil machine control system and oil rig.
To achieve the goals above, the present invention adopts the following technical scheme: the mutual balanced linear drive pumping unit of a machine twin-well is taken out
Oily device is made of direct drive pumping unit control system, direct drive pumping unit；Wherein direct drive pumping unit passes through cable and direct drive pumping unit
Control system is connected.
Direct drive pumping unit by polished rod, Fang Kazi, variable-frequency motor, gear, fastening bolt, screw, ball-screw, sealing shroud,
Boss, secondary spring, sliding rail cylinder, casing, bracket composition, wherein polished rod is connected by square clamp with ball screw, by tight
Fixing bolt fastening side clamp, variable-frequency motor are mounted on casing side, connection gear on variable-frequency electric arbor, gear and screw external tooth phase
Engagement, screw are connect with sliding rail cylinder upper end, and screw is connect with ball-screw, and ball-screw is hollow thread, ball screw outer shaft
To there are two with convex platform, boss is placed in sliding rail cylinder, and casing is connected on bracket, axially there is sealing shroud, sliding rail cylinder in casing
Lower part is built-in with secondary spring.
Direct drive pumping unit control system is by input power, input reactance device, rectifier, common DC bus, SERVO CONTROL
Device composition；Wherein input power is connected with input reactance device, and input reactance device is connected with rectifier, rectifier and public straight
Bus connection is flowed, two servo controllers are parallel in the same common DC bus, and pass through cable and corresponding variable-frequency electric
Machine is connected.
Servo controller manipulates unit, pwm driver, inverter, output filter, motor by embedded controller, screen display
Speed probe composition；It wherein embeds controller to be connected with screen display manipulation unit, screen display manipulates unit and provides human-computer interaction circle
Face embeds controller according to setup parameter and adjusts pwm driver, and DC signal is changed into 380V exchange telecommunications by inverter
Number, output filter exports the ac signal for having filtered higher hamonic wave to variable-frequency motor, and motor speed sensor will monitor
The variable-frequency motor speed feedback signal arrived gives embedded controller.
Compared with prior art, the invention has the following beneficial effects:
1) variable-frequency motor rotary motion is converted to ball-screw by gear drive and drives sucker rod or more straight line fortune by the present invention
It is dynamic, have structure simple, transmission parts are few, and high-efficient, equipment conveying installation cost is low, the characteristics of woth no need to prefabricated foundation.
2) present invention uses Common DC bus, motor reverse power generation is made full use of, when a variable-frequency motor is in
When generating state, electric power generation can be fed back in common DC bus by rectifier, another motor can make full use of feedback
Energy can enable pumping unit imbalance electricity mutually be utilized in this way, realize the mutual balanced type energy back of a machine twin-well,
Achieve the purpose that energy-saving.
Detailed description of the invention: Fig. 1 is schematic structural view of the invention；Fig. 2 is that direct drive pumping unit control system 1 is illustrated in the present invention
Figure；Fig. 3 is 2 structural schematic diagram of direct drive pumping unit in the present invention.
In figure: 1. direct drive pumping unit control systems, 11. input powers, 12. input reactance devices, 13. rectifiers, 14. public
DC bus, 15. servo controllers, 151. embedded controllers, 152. screen displays manipulate unit, 153.PWM driver, 154. inversions
Device, 155. output filters, 156. motor speed sensors, 2. direct drive pumping units, 21. polished rods, 22. side's clamps, 23. variable-frequency electrics
Machine, 24. gears, 25. fastening bolts, 26. screws, 27. ball-screws, 28. sealing shrouds, 29. boss, 30. secondary springs, 31.
Sliding rail cylinder, 32. casings, 33. brackets.
Specific embodiment: below in conjunction with attached drawing, the invention will be further described, and the mutual balanced linear of a machine twin-well, which drives, to be taken out
Oil machine oil rig is made of direct drive pumping unit control system 1, direct drive pumping unit 2；Wherein direct drive pumping unit 2 passes through cable and straight
Drive pumping unit control system 1 is connected.
Direct drive pumping unit 2 is by polished rod 21, Fang Kazi 22, variable-frequency motor 23, gear 24, fastening bolt 25, screw 26, ball
Lead screw 27, sealing shroud 28, boss 29, secondary spring 30, sliding rail cylinder 31, casing 32, bracket 33 form, wherein 21 side of passing through of polished rod
Clamp 22 is connected with ball screw 27, and by 25 side's of fastening clamp 22 of fastening bolt, variable-frequency motor 23 is mounted on casing 32 1
Side, connection gear 24 on 23 axis of variable-frequency motor, gear 24 are meshed with 26 external tooth of screw, and screw 26 and 31 upper end of sliding rail cylinder connect
It connects, screw 26 is connect with ball-screw 27, and ball-screw 27 is hollow thread, and ball screw 27 is axial outside, and there are two with convex platform
29, boss 29 is placed in sliding rail cylinder 31, and casing 32 is connected on bracket 33, axially there is sealing shroud 28, sliding rail cylinder 31 in casing 32
Lower part is built-in with secondary spring 30.
Direct drive pumping unit control system 1 by input power 11, input reactance device 12, rectifier 13, common DC bus 14,
Servo controller 15 forms；Wherein input power 11 is connected with input reactance device 12, input reactance device 12 and 13 phase of rectifier
Connection, rectifier 13 are connect with common DC bus 14, and two servo controllers 15 are parallel to the same common DC bus 14
In, and be connected by cable with corresponding variable-frequency motor 23.
Servo controller 15 is by embedded controller 151, screen display manipulation unit 152, pwm driver 153, inverter 154, defeated
Filter 155, motor speed sensor 156 form out；It wherein embeds controller 151 to be connected with screen display manipulation unit 152, shield
Aobvious manipulation unit 152 provides human-computer interaction interface, embeds controller 151 according to setup parameter and adjusts pwm driver 153, inversion
DC signal is changed into 380V ac signal by device 154, and output filter 155 will filter the exchange telecommunications of higher hamonic wave
Number output is to variable-frequency motor 23, and motor speed sensor 156 is by 23 speed feedback signal of variable-frequency motor monitored to embedded control
Device 151 processed.
In practical applications, input reactance device 12 built in direct drive pumping unit control system 1, can reduce grid voltage mutation
Caused rush of current, output filter 155 can reduce impact of the higher hamonic wave to motor 23 in output electric current, effectively mention
The power factor of high power grid.
Rectifier 13 is the IGBT rectification circuit of PWM control, and there is the double-direction control of rectification and feedback therefore to work as rectification
When device 13 is in rectification state, exchange input electricity is converted into direct current and is sent on common DC bus 14；At rectifier 13
In regenerating condition, the regeneration energy of variable-frequency motor 23 is converted into direct current and is fed back in common DC bus 14.
Direct drive pumping unit 2 controls the switch of variable-frequency motor 23 and commutation by servo controller 15, and the rotation of variable-frequency motor 23 drives
Gear 24 rotates, and the rotation of gear 24 drives screw 26 to rotate, and the rotation of screw 26 drives ball screw 27 to move up and down, and then realizes
Oil well pump pumps, and well liquid is finally lifted to ground.When polished rod 21 rises to top dead-centre, by servo controller 15
It controls variable-frequency motor 23 to commutate, variable-frequency motor 23 inverts, and ball screw 27 drives polished rod 21 to move down；When polished rod 21 drops to
When bottom dead centre, variable-frequency motor 23 is controlled by servo controller 15 and is commutated, variable-frequency motor 23 rotates forward, and ball screw 27 drives polished rod 21
It moves up, such reciprocation cycle realizes the purpose of well liquid lifting.Lubricating oil, lubricating oil are housed between sealing shroud 28 and casing 32
Play lubrication and cooling ball screw 27, secondary spring 30 can hurtle down to ball screw 27 and polished rod 21 surprisingly
Play the role of buffer function in journey to it, while secondary spring 30 can play power-assisted lifting when upstroke starts.
In addition, the corresponding servo controller 15 of two variable-frequency motors, 23, two variable-frequency motors 23 is linked into public affairs by the present invention
In common DC bus 14.Wherein upstroke variable-frequency motor 23 is in acting state, and variable-frequency motor 23 is from common DC bus 14
Energy is obtained, down stroke variable-frequency motor 23 is in generating state, and negative work power generation arrives common DC bus by the feedback of rectifier 13
In 14.In this way when 2 downlink of direct drive pumping unit, another 2 uplink of direct drive pumping unit can be such that pumping unit imbalance is sent out
Electric energy is mutually utilized, and is realized the mutual balanced type energy back of a machine twin-well, is achieved the purpose that energy-saving.
Claims (4)
1. the mutual balanced linear drive pumping unit oil rig of a machine twin-well, it is characterised in that: it is by direct drive pumping unit control system
(1), direct drive pumping unit (2) forms；Wherein direct drive pumping unit (2) is connected by cable with direct drive pumping unit control system (1).
2. the mutual balanced linear drive pumping unit oil rig of machine twin-well according to claim 1, it is characterised in that: straight drive is taken out
Oil machine (2) is by polished rod (21), Fang Kazi (22), variable-frequency motor (23), gear (24), fastening bolt (25), screw (26), ball
Lead screw (27), sealing shroud (28), boss (29), secondary spring (30), sliding rail cylinder (31), casing (32), bracket (33) composition,
Middle polished rod (21) passes through square clamp (22) and is connected with ball screw (27), by fastening bolt (25) fastening side's clamp (22),
Variable-frequency motor (23) is mounted on casing (32) side, connection gear (24) on variable-frequency motor (23) axis, gear (24) and screw
(26) external tooth is meshed, and screw (26) is connect with sliding rail cylinder (31) upper end, and screw (26) is connect with ball-screw (27), ball wire
Thick stick (27) is hollow thread, and ball screw (27) is axial there are two with convex platform (29) outside, and boss (29) is placed in sliding rail cylinder (31)
Interior, casing (32) is connected on bracket (33), is axially had in casing (32) sealing shroud (28), and sliding rail cylinder (31) lower part is built-in with auxiliary
Help spring (30).
3. utilizing the direct drive pumping unit control system of the mutual balanced linear drive pumping unit oil rig of a machine twin-well, it is characterised in that:
Direct drive pumping unit control system (1) is by input power (11), input reactance device (12), rectifier (13), common DC bus
(14), servo controller (15) forms；Wherein input power (11) is connected with input reactance device (12), input reactance device (12)
It is connected with rectifier (13), rectifier (13) is connect with common DC bus (14), and two servo controllers (15) are parallel to
In the same common DC bus (14), and it is connected by cable with corresponding variable-frequency motor (23).
4. the direct drive pumping unit control according to claim 3 using the mutual balanced linear drive pumping unit oil rig of a machine twin-well
System processed, it is characterised in that: servo controller (15) manipulates unit (152), pwm driver by embedded controller (151), screen display
(153), inverter (154), output filter (155), motor speed sensor (156) composition；Wherein embed controller (151)
It is connected with screen display manipulation unit (152), screen display manipulates unit (152) and provides human-computer interaction interface, embeds controller (151) root
Pwm driver (153) are adjusted according to setup parameter, DC signal is changed into 380V ac signal by inverter (154), is exported
The ac signal for having filtered higher hamonic wave is exported and is given variable-frequency motor (23) by filter (155), motor speed sensor (156)
Give the variable-frequency motor monitored (23) speed feedback signal to embedded controller (151).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061520.8A CN109488581A (en) | 2018-09-12 | 2018-09-12 | The mutual balanced linear drive pumping unit control system of one machine twin-well and oil rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061520.8A CN109488581A (en) | 2018-09-12 | 2018-09-12 | The mutual balanced linear drive pumping unit control system of one machine twin-well and oil rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488581A true CN109488581A (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061520.8A Pending CN109488581A (en) | 2018-09-12 | 2018-09-12 | The mutual balanced linear drive pumping unit control system of one machine twin-well and oil rig |
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| Country | Link |
|---|---|
| CN (1) | CN109488581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608015A (en) * | 2019-10-10 | 2019-12-24 | 苏贻新 | Wheel shaft type beam energy-saving pumping unit |
| CN110714739A (en) * | 2019-11-25 | 2020-01-21 | 中国矿业大学 | Double-layer superposed single-well drainage and production ground device of coal bed gas-containing system |
| CN112211810A (en) * | 2020-09-17 | 2021-01-12 | 中国石油天然气股份有限公司 | Direct drive device of motor without reduction box and operation control method |
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| US20160215769A1 (en) * | 2015-01-27 | 2016-07-28 | Baker Hughes Incorporated | Systems and Methods for Providing Power to Well Equipment |
| CN107911049A (en) * | 2017-10-24 | 2018-04-13 | 中国石油天然气股份有限公司 | A kind of brushless electric machine energy feedback speed-adjusting and control system used for oil extractor |
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Patent Citations (7)
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| CN201222711Y (en) * | 2008-06-06 | 2009-04-15 | 西安西京智能装备技术有限责任公司 | Electric energy feedback device for electric control system of industrial sewing machine |
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| US20160215769A1 (en) * | 2015-01-27 | 2016-07-28 | Baker Hughes Incorporated | Systems and Methods for Providing Power to Well Equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608015A (en) * | 2019-10-10 | 2019-12-24 | 苏贻新 | Wheel shaft type beam energy-saving pumping unit |
| CN110714739A (en) * | 2019-11-25 | 2020-01-21 | 中国矿业大学 | Double-layer superposed single-well drainage and production ground device of coal bed gas-containing system |
| CN112211810A (en) * | 2020-09-17 | 2021-01-12 | 中国石油天然气股份有限公司 | Direct drive device of motor without reduction box and operation control method |
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Application publication date: 20190319 |