CN112177573A - Intelligent hydraulic pumping unit - Google Patents
Intelligent hydraulic pumping unit Download PDFInfo
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- CN112177573A CN112177573A CN201911414177.5A CN201911414177A CN112177573A CN 112177573 A CN112177573 A CN 112177573A CN 201911414177 A CN201911414177 A CN 201911414177A CN 112177573 A CN112177573 A CN 112177573A
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- 238000005086 pumping Methods 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 77
- 239000010720 hydraulic oil Substances 0.000 claims description 14
- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001965 increasing effect Effects 0.000 abstract description 3
- 238000005381 potential energy Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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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
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
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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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses an intelligent hydraulic pumping unit, which comprises a tower frame, a driving hydraulic cylinder, a first fixed pulley block, a second fixed pulley block, a third fixed pulley block, a fourth fixed pulley block, a movable pulley block, a transmission belt, a weight box, a closed hydraulic system and an electrical control system, wherein the tower frame is arranged on the tower frame; the weight box can complete energy storage potential energy, and energy loss is reduced. The speed of the sucker rod is controlled by a hydraulic cylinder. The driving hydraulic cylinder is connected through the movable pulley block and a corresponding transmission belt, so that the stroke increasing effect of the pumping rod is achieved, and the long stroke function of the pumping unit is realized; a closed hydraulic system is adopted, hydraulic elements such as a reversing valve, a speed regulating valve, an energy accumulator and the like are not arranged, and the energy efficiency of the system is improved; the intelligent hydraulic pumping unit provided by the invention changes the control mode of a hydraulic system, optimizes the mechanical counterweight structure and realizes the long-acting, safe and higher energy-saving effects of the hydraulic pumping unit.
Description
Technical Field
The invention relates to the technical field of oil exploitation equipment, in particular to an intelligent hydraulic pumping unit.
Background
Along with the increase of national economy demand on energy, the demand on high-efficiency energy-saving pumping units is increasing day by day, and compared with the traditional beam pumping unit, the hydraulic pumping unit is widely concerned due to the advantages of simple structure, low manufacturing cost, stable work, long stroke, convenient stroke frequency adjustment, easy realization of safety protection, remarkable energy-saving effect and the like. The hydraulic pumping unit products are put into use at home and abroad.
The existing hydraulic pumping unit is mainly in the following forms, 1, hydraulic pump-reversing valve-speed regulating valve-hydraulic cylinder-energy accumulator are used for energy storage. 2. The hydraulic pump, the reversing valve, the speed regulating valve, the hydraulic cylinder and the mechanical counterweight are used for energy storage. 3. The hydraulic pump, the reversing valve, the speed regulating valve, the hydraulic motor and the energy accumulator are used for energy storage.
The field use finds that the existing hydraulic pumping unit has the following problems:
1. because the working frequency of the pumping unit is very high, the service life of part of hydraulic components is too short, mainly the energy accumulator and the reversing valve are easy to damage, and the use cost of the equipment is higher.
2. Because the speed regulating valve has hydraulic energy loss in the use process, a hydraulic system generates heat, the energy consumption is overlarge, and auxiliary systems such as heat dissipation and cooling are needed.
3. In the reversing process, hydraulic impact is large, accidents such as breakage of a transmission belt can occur, and potential safety hazards are formed.
4. When the well is repaired, the main body equipment of the oil pumping unit needs to be moved, and the system is inconvenient to maintain or repair.
5. The adoption rate of the mechanical-electrical-hydraulic integration technology is not enough, and the overall performance of the equipment is influenced.
Disclosure of Invention
The invention aims to provide an intelligent hydraulic pumping unit, which solves the problems in the prior art, changes the control mode of a hydraulic system, optimizes a mechanical counterweight structure and realizes the long-acting, safe and higher energy-saving effects of the hydraulic pumping unit.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an intelligent hydraulic pumping unit which comprises a tower frame, a driving hydraulic cylinder, a first fixed pulley block, a second fixed pulley block, a third fixed pulley block, a fourth fixed pulley block, a movable pulley block, a transmission belt and a weight box, wherein the tower frame is arranged on the tower frame; the driving hydraulic cylinder is arranged in the tower, the bottom end of the driving hydraulic cylinder is connected with the top of the tower, and the end part of a piston rod of the driving hydraulic cylinder is hinged to the top of a bearing box; the movable pulley block comprises a movable pulley a, a movable pulley b and a movable pulley c, and the movable pulley a, the movable pulley b and the movable pulley c are rotatably connected in the bearing box; the first fixed pulley block is arranged at the bottom of the tower and is opposite to the movable pulley block, the second fixed pulley block is arranged at one side of the bottom end of the tower, the third fixed pulley block is arranged at one side of the top of the tower and is opposite to the second fixed pulley block, the fourth fixed pulley block is arranged at the other side of the top of the tower, the first fixed pulley block, the second fixed pulley block, the third fixed pulley block and the fourth fixed pulley block are all rotatably connected to the tower, and a fixed pulley g is further rotatably connected to the tower between the third fixed pulley block and the fourth fixed pulley block;
the first fixed pulley group comprises a fixed pulley a and a fixed pulley b, the second fixed pulley group comprises a fixed pulley c and a fixed pulley d, the third fixed pulley group comprises a fixed pulley e and a fixed pulley f, and the fourth fixed pulley group comprises a fixed pulley j, a fixed pulley h and a fixed pulley i, wherein the fixed pulley h is arranged between the fixed pulley i and the fixed pulley j; the transmission belt comprises a transmission belt a, a transmission belt b, a transmission belt c, a transmission belt d and a transmission belt e;
a rope hanger is arranged on one side of the tower, a weight box is arranged on the other side of the tower, and the bottom of the rope hanger is connected with a sucker rod; one end of the transmission belt a is connected with the rope hanger, and the other end of the transmission belt a is connected with the top of the weight box through the fixed pulley j and the fixed pulley e; one end of the transmission belt b is connected with the rope hanger, and the other end of the transmission belt b is connected with a tensioner arranged at the top of the movable pulley b after passing through the fixed pulley h, the fixed pulley g and the movable pulley b; one end of the transmission belt c is connected with the rope hanger, and the other end of the transmission belt c is connected with the top of the weight box through the fixed pulley i and the fixed pulley f; one end of the transmission belt d is connected with the bottom of the weight box, and the other end of the transmission belt d is connected with a tensioner arranged at the bottom of the movable pulley a after passing through the fixed pulley c, the fixed pulley b and the movable pulley a; one end of the transmission belt e is connected with the bottom of the weight box, and the other end of the transmission belt e is connected with a tensioner arranged at the bottom of the movable pulley c after passing through the fixed pulley d, the fixed pulley a and the movable pulley c.
Preferably, the movable pulley a, the movable pulley b and the movable pulley c are respectively arranged on a shaft through a bearing, and two ends of the shaft are connected with the bearing box.
Preferably, the fixed pulley a and the fixed pulley b are arranged on the tower through a shaft and a bearing seat; the fixed pulley c and the fixed pulley d are arranged on the tower through a shaft and a bearing seat; the fixed pulley e and the fixed pulley f are arranged on the tower through a shaft and a bearing seat; the fixed pulley g is arranged on the tower through a shaft and a bearing seat.
Preferably, the transmission belt a and the transmission belt c are symmetrically arranged; the transmission belt d and the transmission belt e are symmetrically arranged.
Preferably, the device further comprises a swing arm and a swing arm rotating cylinder; the swing arm is provided with two, two swing arm one end with the rotatory jar of swing arm is connected, and the other end is connected with the axle, fixed pulley j fixed pulley h with fixed pulley i passes through the bearing setting and is in epaxial.
Preferably, the device further comprises a position detector, wherein the position detector is mounted on the tower and is opposite to the driving hydraulic cylinder, a piston rod of the driving hydraulic cylinder is provided with a baffle, when the piston rod extends or retracts, the baffle moves to the position of the position detector, and the position detector sends out a position signal.
Preferably, the hydraulic control system further comprises a closed hydraulic system and an electrical control system, wherein the electrical control system drives a variable frequency motor to drive a bidirectional hydraulic pump to provide hydraulic oil to the driving hydraulic cylinder and the swing arm rotating cylinder through a PLC and a variable frequency controller according to given parameters and feedback signals of the closed hydraulic system.
Preferably, the closed hydraulic system is provided with a bidirectional driving hydraulic pump, a variable frequency motor, a hydraulic control valve group, a hydraulic oil tank, a liquid level controller, a temperature controller, a filter, a fault pump, a pressure sensor, an overflow valve, a pre-pressing type air filter and an electric heater; the hydraulic control valve group is arranged on the driving hydraulic cylinder and the swing arm rotating cylinder, and other elements are arranged on a hydraulic oil tank.
Preferably, a power box, a PLC, a variable frequency controller, a remote communication system and a remote monitoring system are arranged in the electric control system, the remote monitoring system is installed in a central control room, and the rest elements are installed in an electric control box beside the tower.
Compared with the prior art, the invention has the following beneficial technical effects:
the intelligent hydraulic pumping unit provided by the invention changes the control mode of a hydraulic system, optimizes a mechanical counterweight structure, saves energy consumption for oil extraction by about one third of the oil extraction cost compared with the traditional beam pumping unit by 70 percent and 20 percent compared with the traditional hydraulic pumping unit, and brings huge economic benefits to the exploitation of oil fields because the equipment has the advantages of long service life, high efficiency, simple operation, convenient maintenance and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic perspective view of an intelligent hydraulic pumping unit according to the present invention;
FIG. 2 is a driving diagram of the intelligent hydraulic pumping unit according to the present invention;
FIG. 3 is a driving diagram of the swing arm in the open state of the present invention;
FIG. 4 is a hydraulic schematic of the present invention;
in the figure: 1-a tower; 2-driving the hydraulic cylinder; 3-a second fixed pulley group; 4-a third fixed pulley group; 5-a fourth fixed pulley group; 6-a movable pulley block; 7-a transmission belt; 8-weight box; 9-swing arm; 10-swing arm rotating cylinder; 11-a rope hanger; 12-a sucker rod; 13-a bearing housing; 14-a bi-directional drive hydraulic pump; 15-variable frequency motor; 16-a hydraulic control valve group; 17-a hydraulic oil tank; 18-a liquid level controller; 19-a temperature controller; 20-a filter; 21-a faulty pump; 22-a pressure sensor; 23-relief valve; 24-a pre-pressurized air cleaner; 25-an electric heater;
21.1-fixed pulley a; 21.2-fixed pulley b; 21.3-fixed pulley c; 21.4-fixed pulley d, 21.5-fixed pulley e; 21.6-fixed pulley f; 21.7-fixed pulley g; 21.8-fixed pulley j; 21.9-fixed pulley h; 21.10-fixed pulley i;
26.1-movable pulley a; 26.2-movable pulley b; 26.3-movable pulley c;
32.1-Belt a; 33-drive belt b; 32.2 driving belt c; 24.2-belt d; 24.1-drive belt e;
28.1-tensioner; 28.2-tensioner; 28.3-tensioner;
22-axis; 23-axis; 30-axis; 35-axis; 36-axis; 37-axis;
39.1-position detector; 39.2-position detector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an intelligent hydraulic pumping unit to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The embodiment provides an intelligent hydraulic pumping unit, as shown in fig. 1 and 2, which includes a tower frame 1, a driving hydraulic cylinder 2, a first fixed pulley block (not shown in fig. 1), a second fixed pulley block 3, a third fixed pulley block 4, a fourth fixed pulley block 5, a movable pulley block 6, a transmission belt 7 and a weight box 8; the driving hydraulic cylinder 2 is arranged in the tower frame 1, the bottom end of the driving hydraulic cylinder 2 is connected with the top of the tower frame 1, and the end part of a piston rod of the driving hydraulic cylinder 2 is hinged to the top of a bearing box 13; the movable pulley block 6 comprises a movable pulley a26.1, a movable pulley b26.2 and a movable pulley c26.3, and the movable pulley a26.1, the movable pulley b26.2 and the movable pulley c26.3 are rotatably connected in the bearing box 13; the first fixed pulley block is arranged at the bottom of the tower frame 1 and is opposite to the movable pulley block 6, the second fixed pulley block 3 is arranged at one side of the bottom end of the tower frame 1, the third fixed pulley block 4 is arranged at one side of the top of the tower frame 1 and is opposite to the second fixed pulley block 3, the fourth fixed pulley block 5 is arranged at the other side of the top of the tower frame 1, the first fixed pulley block, the second fixed pulley block 3, the third fixed pulley block 4 and the fourth fixed pulley block 5 are all rotatably connected to the tower frame 1, and a fixed pulley g21.7 is further rotatably connected to the tower frame 1 between the third fixed pulley block 4 and the fourth fixed pulley.
The first fixed pulley group comprises a fixed pulley a21.1 and a fixed pulley b21.2, the second fixed pulley group 3 comprises a fixed pulley c21.3 and a fixed pulley d21.4, the third fixed pulley group 4 comprises a fixed pulley e21.5 and a fixed pulley f21.6, the fourth fixed pulley group 5 comprises a fixed pulley j21.8, a fixed pulley h21.9 and a fixed pulley i21.10, wherein the fixed pulley h21.9 is arranged between the fixed pulley i21.10 and the fixed pulley j 21.8; the transmission belt 7 comprises a transmission belt a32.1, a transmission belt b33, a transmission belt c32.2, a transmission belt d24.2 and a transmission belt e 24.1.
A rope hanger 11 is arranged on one side of the tower frame 1, a weight box 8 is arranged on the other side of the tower frame, and the bottom of the rope hanger 11 is connected with a sucker rod 12; one end of a transmission belt a32.1 is connected with the rope hanger 11, and the other end of the transmission belt a is connected with the top of the weight box 8 after passing through a fixed pulley j21.8 and a fixed pulley e 21.5; one end of a transmission belt b33 is connected with the rope hanger 11, and the other end is connected with a tension device 28.1 arranged at the top of the movable pulley b26.2 through a fixed pulley h21.9, a fixed pulley g21.7 and the movable pulley b 26.2; one end of a transmission belt c32.2 is connected with the rope hanger 11, and the other end of the transmission belt c is connected with the top of the weight box 8 after passing through a fixed pulley i21.10 and a fixed pulley f 21.6; one end of a transmission belt d24.2 is connected with the bottom of the weight box 8, and the other end of the transmission belt d is connected with a tensioner 28.3 arranged at the bottom of the movable pulley a26.1 through a fixed pulley c21.3, a fixed pulley b21.2 and a movable pulley a 26.1; one end of a transmission belt e24.1 is connected with the bottom of the weight box 8, and the other end is connected with a tensioner 28.2 arranged at the bottom of the movable pulley c26.3 through a fixed pulley d21.4, a fixed pulley a21.1 and a movable pulley c 26.3.
In this embodiment, the movable pulley a26.1, the movable pulley b26.2 and the movable pulley c26.3 are respectively arranged on the shaft 30 through a bearing, and two ends of the shaft 30 are connected with the bearing box 13.
In the embodiment, a fixed pulley a21.1 and a fixed pulley b21.2 are arranged on the tower 1 through a shaft 22 and a bearing seat; the fixed pulley c21.3 and the fixed pulley d21.4 are arranged on the tower frame 1 through a shaft 23 and a bearing seat; the fixed pulley e21.5 and the fixed pulley f21.6 are arranged on the tower 1 through a shaft 37 and a bearing seat; the fixed pulley g21.7 is arranged on the tower 1 through a shaft 36 and a bearing seat; each movable pulley and each fixed pulley can rotate on a corresponding shaft.
In the embodiment, the transmission belt a32.1 and the transmission belt c32.2 are symmetrically arranged; the transmission belt d24.2 and the transmission belt e24.1 are symmetrically arranged; the transmission belt 7 adopts a symmetrical layout, so that the stress condition of the supporting shaft and the transmission belt 7 is improved, and the service life of the bearing and the transmission belt 7 is prolonged.
The intelligent hydraulic pumping unit provided by the embodiment has the following working process:
the piston rod of the hydraulic cylinder 2 is driven to extend out, the sucker rod 12 is pulled to ascend through the movable pulley h21.9 and the transmission belt b33, meanwhile, the weight box 8 descends, the sucker rod 12 is pulled to ascend through the transmission belt a32.1 and the transmission belt c32.2, and in the process, the potential energy of the weight box 8 is released, and the power of the hydraulic pump driving motor is reduced. The speed of the sucker rod 12 is controlled by a hydraulic cylinder.
The piston rod of the driving hydraulic cylinder 2 retracts, the sucker rod 12 descends by gravity, meanwhile, the sucker rod 12 pulls the weight box 8 to ascend by a transmission belt a32.1 and a transmission belt c32.2 of a transmission belt 7, the pulling force of the driving hydraulic cylinder 2 balances the weight difference between the sucker rod 12 and the weight box 8 by a fixed pulley a21.1, a fixed pulley b21.2, a transmission belt d24.2 and a transmission belt e24.1, and in the process, the energy storage potential energy of the weight box 8 is completed, and the energy loss is reduced. The speed of the sucker rod 12 is controlled by a hydraulic cylinder. The driving hydraulic cylinder 2 is connected through the movable pulley block 6 and the corresponding transmission belt 7, so that the stroke increasing effect of the pumping rod 12 is achieved, and the long stroke function of the pumping unit is realized.
In this embodiment, the device further comprises a swing arm 9 and a swing arm rotating cylinder 10; two swing arms 9 are arranged, one ends of the two swing arms 9 are connected with a swing arm rotating cylinder 10, the other ends of the two swing arms 9 are connected with a shaft 35, and a fixed pulley j21.8, a fixed pulley h21.9 and a fixed pulley i21.10 are arranged on the shaft 35 through bearings; fig. 3 shows a lifting diagram of the swing arm 9, and during workover operation, the swing arm rotating cylinder 10 drives the swing arm 9 to rotate upwards by 90 degrees, so that the upper space of a wellhead is made, workover operation can be completed without moving the pumping unit body, and the utilization rate of equipment is improved.
In the embodiment, the device further comprises position detectors, wherein the position detectors comprise a position detector 39.1 and a position detector 39.2, the two position detectors are vertically arranged on the tower frame 1 and are opposite to the driving hydraulic cylinder 2, a piston rod of the driving hydraulic cylinder 2 is provided with a baffle, when the piston rod extends or retracts, the baffle moves to the position of the corresponding position detector, and the position detectors send position signals; the position of the driving hydraulic cylinder 2 is detected by the position detector, the reciprocating motion of the driving hydraulic cylinder 2 is realized by the control of the variable speed pump, and the stroke of the pumping unit can be conveniently controlled by changing the position detected by the position detector.
The system also comprises a closed hydraulic system and an electrical control system, wherein the electrical control system drives a variable frequency motor 15 to drive a bidirectional hydraulic pump to provide hydraulic oil to a driving hydraulic cylinder 2 and a swing arm rotary cylinder 10 through a PLC and a variable frequency controller according to given parameters and feedback signals of the closed hydraulic system; the driving hydraulic cylinder 2 drives the pumping rod 12 and the weight box 8 to do up-and-down reciprocating motion through the driving belt 7, the movable pulley block 6 and the fixed pulley blocks, so that the stroke frequency of the pumping unit is completed, and the energy storage of the weight box 8 is completed, thereby achieving the purpose of energy conservation. The rotating speed of the variable frequency motor 15 is in direct proportion to the speed of the hydraulic cylinder, and the reciprocating motion and the speed change of the hydraulic cylinder can be realized by changing the rotating speed and the rotating direction of the variable frequency motor 15, so that the working speed of the sucker rod 12 is changed. Because a closed hydraulic system is adopted and hydraulic elements such as a reversing valve, a speed regulating valve, an energy accumulator and the like are not arranged, the energy efficiency of the system is improved. The variable frequency motor 15 adopts time control gradient in the change of the rotating speed, thereby realizing the control of acceleration and deceleration and reducing the impact of a hydraulic system and equipment. Through remote communication and control system, can remote control many equipment, the oil recovery parameter of every mouthful of oil engine of reasonable setting.
As shown in fig. 4, in the present embodiment, a bidirectional driving hydraulic pump 14, a variable frequency motor 15, a hydraulic control valve group 16, a hydraulic oil tank 17, a liquid level controller 18, a temperature controller 19, a filter 20, a fault pump 21, a pressure sensor 22, an overflow valve 23, a pre-pressure air cleaner 24 and an electric heater 25 are arranged in the closed hydraulic system; the hydraulic control valve group 16 is arranged on the driving hydraulic cylinder 2 and the swing arm rotating cylinder 10, and the rest components are arranged on the hydraulic oil tank 17.
In the closed hydraulic system, when the rotating speed of the variable frequency motor 15 is 0, the output flow of the bidirectional hydraulic pump is 0, and the driving hydraulic cylinder 2 keeps a stop position under the action of the hydraulic control one-way valve. The variable frequency motor 15 dextrorotation, when the rotational speed was greater than 0, the B hydraulic fluid port output flow of two-way hydraulic pump got into the rodless chamber of driving hydraulic cylinder 2 through the hydraulic control check valve, promoted the piston rod of driving hydraulic cylinder 2 and stretched out, and the pole chamber flow that has of driving hydraulic cylinder 2 flows back to the A hydraulic fluid port of hydraulic pump through the hydraulic control check valve, and the part that the A hydraulic fluid port flow of hydraulic pump is not enough is supplemented from hydraulic tank 17 by the check valve. The adjustment of the ascending speed of the hydraulic cylinder and the sucker rod 12 can be realized by changing the rotating speed of the variable frequency motor 15. When the variable frequency motor 15 rotates leftwards and the rotating speed is greater than 0, the output flow of the oil port A of the bidirectional hydraulic pump enters the rod cavity of the driving hydraulic cylinder 2 through the hydraulic control one-way valve to push the piston rod of the hydraulic cylinder to retract, part of the flow of the rodless cavity of the hydraulic cylinder flows back to the oil port B of the hydraulic pump through the hydraulic control one-way valve, and part of the flow flows back to the hydraulic oil tank 17 through the hydraulic control one-way valve. The descending speed of the hydraulic cylinder and the sucker rod 12 can be realized by changing the rotating speed of the variable frequency motor 15.
The function of the fault adjusting pump 21 is 1, when a main system has a fault, the equipment is stopped at a maintenance position through a manual reversing valve, and the equipment is convenient to maintain. 2. When workover treatment is carried out, the swing arm 9 is rotated to the maintenance position through the manual reversing valve, and workover treatment is facilitated. The overflow valve 23 is used for preventing the system from being overloaded and protecting the safety of equipment. The pressure sensor 22 functions to: 1. the weight of the weight box 8 is quickly set through the value of the pressure sensor 22, so that the variable frequency motor 15 runs in the optimal working interval. 2. The system pressure when the sucker rod 12 descends is automatically adjusted by comparing the value of the pressure sensor 22 with the given parameters of the PLC, and the sucker rod 12 is prevented from bending. The filter 20 filters the hydraulic oil passing through the hydraulic control one-way valve, so that the service life of the hydraulic oil is prolonged, and the abrasion of the hydraulic pump is reduced. The pre-pressing air filter 24 is used for improving the oil supplementing pressure of the hydraulic pump, preventing the cavitation phenomenon of the hydraulic pump, prolonging the service life of the hydraulic pump and stabilizing the system pressure. The electric heater 25 is used for heating hydraulic oil under the condition of cold climate, so that the climate suitable range of the equipment is improved. And other hydraulic elements are used for detecting the working state of the hydraulic system and providing fault alarm and equipment maintenance early warning.
In the electric control system, the PLC transmits the parameters of the remote control system to the frequency converter through the program setting by the remote communication system, and controls the work of the hydraulic system. Feeding back the operating parameters of the hydraulic system to the PLC for further optimization and adjustment; the frequency converter drives the variable frequency motor 15 and the bidirectional hydraulic pump according to the set value of the PLC, and the rotating speed of the variable frequency motor 15 changes according to the set slope, so that the impact of a hydraulic system is reduced. The parameters of the equipment are uploaded through a remote communication system to realize the networking function.
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (9)
1. The utility model provides an intelligent hydraulic pumping unit which characterized in that: the tower frame comprises a tower frame, a driving hydraulic cylinder, a first fixed pulley block, a second fixed pulley block, a third fixed pulley block, a fourth fixed pulley block, a movable pulley block, a transmission belt and a weight box; the driving hydraulic cylinder is arranged in the tower, the bottom end of the driving hydraulic cylinder is connected with the top of the tower, and the end part of a piston rod of the driving hydraulic cylinder is hinged to the top of a bearing box; the movable pulley block comprises a movable pulley a, a movable pulley b and a movable pulley c, and the movable pulley a, the movable pulley b and the movable pulley c are rotatably connected in the bearing box; the first fixed pulley block is arranged at the bottom of the tower and is opposite to the movable pulley block, the second fixed pulley block is arranged at one side of the bottom end of the tower, the third fixed pulley block is arranged at one side of the top of the tower and is opposite to the second fixed pulley block, the fourth fixed pulley block is arranged at the other side of the top of the tower, the first fixed pulley block, the second fixed pulley block, the third fixed pulley block and the fourth fixed pulley block are all rotatably connected to the tower, and a fixed pulley g is further rotatably connected to the tower between the third fixed pulley block and the fourth fixed pulley block;
the first fixed pulley group comprises a fixed pulley a and a fixed pulley b, the second fixed pulley group comprises a fixed pulley c and a fixed pulley d, the third fixed pulley group comprises a fixed pulley e and a fixed pulley f, and the fourth fixed pulley group comprises a fixed pulley j, a fixed pulley h and a fixed pulley i, wherein the fixed pulley h is arranged between the fixed pulley i and the fixed pulley j; the transmission belt comprises a transmission belt a, a transmission belt b, a transmission belt c, a transmission belt d and a transmission belt e;
a rope hanger is arranged on one side of the tower, a weight box is arranged on the other side of the tower, and the bottom of the rope hanger is connected with a sucker rod; one end of the transmission belt a is connected with the rope hanger, and the other end of the transmission belt a is connected with the top of the weight box through the fixed pulley j and the fixed pulley e; one end of the transmission belt b is connected with the rope hanger, and the other end of the transmission belt b is connected with a tensioner arranged at the top of the movable pulley b after passing through the fixed pulley h, the fixed pulley g and the movable pulley b; one end of the transmission belt c is connected with the rope hanger, and the other end of the transmission belt c is connected with the top of the weight box through the fixed pulley i and the fixed pulley f; one end of the transmission belt d is connected with the bottom of the weight box, and the other end of the transmission belt d is connected with a tensioner arranged at the bottom of the movable pulley a after passing through the fixed pulley c, the fixed pulley b and the movable pulley a; one end of the transmission belt e is connected with the bottom of the weight box, and the other end of the transmission belt e is connected with a tensioner arranged at the bottom of the movable pulley c after passing through the fixed pulley d, the fixed pulley a and the movable pulley c.
2. The intelligent hydraulic pumping unit of claim 1, wherein: the movable pulley a, the movable pulley b and the movable pulley c are arranged on a shaft through a bearing respectively, and two ends of the shaft are connected with the bearing box.
3. The intelligent hydraulic pumping unit of claim 1, wherein: the fixed pulley a and the fixed pulley b are arranged on the tower through a shaft and a bearing seat; the fixed pulley c and the fixed pulley d are arranged on the tower through a shaft and a bearing seat; the fixed pulley e and the fixed pulley f are arranged on the tower through a shaft and a bearing seat; the fixed pulley g is arranged on the tower through a shaft and a bearing seat.
4. The intelligent hydraulic pumping unit of claim 1, wherein: the transmission belt a and the transmission belt c are symmetrically arranged; the transmission belt d and the transmission belt e are symmetrically arranged.
5. The intelligent hydraulic pumping unit of claim 1, wherein: the swing arm and the swing arm rotating cylinder are also included; the swing arm is provided with two, two swing arm one end with the rotatory jar of swing arm is connected, and the other end is connected with the axle, fixed pulley j fixed pulley h with fixed pulley i passes through the bearing setting and is in epaxial.
6. The intelligent hydraulic pumping unit of claim 5, wherein: the device is characterized by further comprising a position detector, wherein the position detector is installed on the tower and is opposite to the driving hydraulic cylinder, a piston rod of the driving hydraulic cylinder is provided with a baffle, when the piston rod extends out or retracts, the baffle moves to the position of the position detector, and the position detector sends out a position signal.
7. The intelligent hydraulic pumping unit of claim 5, wherein: the hydraulic control system is characterized by further comprising a closed hydraulic system and an electrical control system, wherein the electrical control system drives a variable frequency motor to drive a bidirectional hydraulic pump to provide hydraulic oil to the driving hydraulic cylinder and the swing arm rotating cylinder through a PLC and a variable frequency controller according to given parameters and feedback signals of the closed hydraulic system.
8. The intelligent hydraulic pumping unit of claim 7, wherein: the closed hydraulic system is internally provided with a bidirectional driving hydraulic pump, a variable frequency motor, a hydraulic control valve bank, a hydraulic oil tank, a liquid level controller, a temperature controller, a filter, a fault pump, a pressure sensor, an overflow valve, a pre-pressing air filter and an electric heater; the hydraulic control valve group is arranged on the driving hydraulic cylinder and the swing arm rotating cylinder, and other elements are arranged on a hydraulic oil tank.
9. The intelligent hydraulic pumping unit of claim 7, wherein: the electric control system is internally provided with a power box, a PLC, a variable frequency controller, a remote communication system and a remote monitoring system, the remote monitoring system is installed in a central control room, and other elements are installed in an electric control box beside the tower.
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| CN201911414177.5A CN112177573B (en) | 2019-12-31 | 2019-12-31 | Intelligent hydraulic pumping unit |
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| CN201911414177.5A CN112177573B (en) | 2019-12-31 | 2019-12-31 | Intelligent hydraulic pumping unit |
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