CN104314527B - A kind of oil production method of the hydraulic pumping unit of use power-assisted oil cylinder - Google Patents
A kind of oil production method of the hydraulic pumping unit of use power-assisted oil cylinder Download PDFInfo
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- CN104314527B CN104314527B CN201410590700.0A CN201410590700A CN104314527B CN 104314527 B CN104314527 B CN 104314527B CN 201410590700 A CN201410590700 A CN 201410590700A CN 104314527 B CN104314527 B CN 104314527B
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- 238000005086 pumping Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 230000003028 elevating effect Effects 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 239000003921 oil Substances 0.000 claims description 302
- 239000010720 hydraulic oil Substances 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005381 potential energy Methods 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 abstract description 4
- 230000010355 oscillation Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 235000003642 hunger Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000037351 starvation Effects 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 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
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
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Abstract
A kind of hydraulic pumping unit of use power-assisted oil cylinder, including main oil pump, accumulator, elevating ram and shaft collar；One piston body with piston rod is installed in power-assisted oil cylinder, and by sealing so as to which cylinder cavity to be divided into upper oil cavitie, middle upper oil cavitie, four chambers of middle lower oil cavitie and lower oil cavitie successively, and it is respectively equipped with hydraulic fluid port on each chamber；Shaft collar top is symmetrically connected to be connected at the top of two elevating rams, the piston rod of two fluid cylinders with the polished rod hung；Main oil pump is connected to form closing oil path with middle upper oil cavitie, middle lower oil cavitie by reversal valve, and upper oil cavitie is connected to form closing oil path with accumulator；Lower oil cavitie is connected to form closing oil path with the oil pocket of elevating ram.The present invention reduces the discharge capacity of oil pump, reduces energy consumption by increasing power-assisted oil cylinder between oil pump and lifting fluid cylinder, accumulator is indirectly connected with by power-assisted oil cylinder and elevating ram simultaneously, pressure oscillation is small, and the impact to oil circuit is smaller, therefore substantially increases the stability of hydraulic system.
Description
Technical field
The present invention relates to a kind of oil field oil recovery machiner, particularly a kind of hydraulic pumping unit.
Background technology
At present, the oil recovery machiner in oil field usually beam pumping unit, using toggle, by the rotation of motor
Pumping for horse head is converted into after deceleration of motion, downhole pump is driven by polished rod, sucker rod, well liquid is given rise to
Ground.Because the energy conversion efficiency of the operation principle of toggle is relatively low.This oil pumper main screw lift is big, takes up an area face
Product is big, and high energy consumption, efficiency is low, while there is the deficiencies such as regulation stroke, jig frequency inconvenience.With the increasing of lifting load and jig frequency
Greatly, the own vol of beam pumping unit is sharply increased with weight, not readily transportable and installation.
Chinese patent CN 203403865 U, CN201982065 U, CN203239662 U etc. discloses several hydraulic pressure and taken out
Oil machine.The oil pump of this several hydraulic pumping unit is joined directly together with elevating ram, and the discharge capacity of oil pump is larger, and power consumption is high.Meanwhile, this is several
Plant hydraulic pumping unit and the modes such as accumulation of energy are carried out using flywheel energy storage or accumulator, have the following disadvantages：The flywheel rotated at a high speed
There is potential safety hazard, energy storage efficiency is low；Accumulator is directly installed on the oil circuit of elevating ram, when releasing energy, pressure oscillation
Larger, the impact to oil circuit is larger, and system is unstable.
The content of the invention
The purpose of the present invention aiming at the deficiencies in the prior art there is provided a kind of rational in infrastructure, easy to operate, energy consumption it is low,
The hydraulic pumping unit of efficiency high and the small use power-assisted oil cylinder of pressure oscillation.
A kind of hydraulic pumping unit of use power-assisted oil cylinder is provided first, and its technical scheme is：Including main oil pump, accumulator,
Elevating ram, shaft collar and control system；One piston body with piston rod, the piston are installed in the power-assisted oil cylinder
Body two ends piston and power-assisted oil cylinder inner wall formation piston seal, the intermediate seal circle formation post of the piston rod and power-assisted oil cylinder
Plug sealing, so that cylinder cavity is divided into upper oil cavitie, middle upper oil cavitie, four chambers of middle lower oil cavitie and lower oil cavitie successively, and respectively
Hydraulic fluid port is respectively equipped with individual chamber；The shaft collar includes flange base and the well head of flange base bottom connection is big by four
Two elevating rams that logical, top is symmetrically connected, the piston rod of two elevating rams is linked together by crossbeam, and crossbeam
Middle part be connected with the polished rod of its bottom hung；Middle upper oil cavitie, the middle lower oil cavitie of the main oil pump and power-assisted oil cylinder pass through commutation
Valve connects to form closing oil path, and the upper oil cavitie of the power-assisted oil cylinder is connected to form closing oil path with accumulator；Power-assisted oil cylinder
Lower oil cavitie is connected to form closing oil path with the oil pocket of elevating ram；Be respectively equipped with the direction of motion of the elevating ram,
Lower stroke switch, and when elevating ram is respectively moved to upper and lower travel switch, control system can be changed described in coordinated signals
Commutation action is carried out to valve.
Such scheme can be more preferably：
It is machined with the crossbeam on half-arc groove and cross girder and is machined with circular hole, steel cable bypasses half-arc groove and passes through horizontal stroke
Circular hole in beam body is fastened with polished rod eye；Described polished rod is through polished rod eye and uses polished rod clamp fastening.Connect horizontal using steel cable
Beam and polished rod, can reduce impact during stroke commutation, be easy to regulation.
The hydraulic pumping unit also includes slippage pump, and the outlet of the slippage pump is respectively by switch valve, check valve with helping
The upper oil cavitie of power cylinder, middle upper oil cavitie, middle lower oil cavitie and lower oil cavitie are connected, and the inlet port of the slippage pump is connected with fuel tank；
Pressure sensor is respectively mounted on each described closing oil path, and the pressure sensor can be mended with the slippage pump coordinated signals
Oil.In the course of the work, inevitably there is oil leakage phenomenon in oil circuit.When the pressure value that corresponding pressure sensor is measured is less than
During setting, valve events are switched accordingly, and hydraulic oil is added to corresponding chamber by slippage pump.
The position sensor for detecting oil mass in oil cylinder chamber is respectively mounted on the Shang Gai of the power-assisted oil cylinder and lower lid,
And can be with the slippage pump coordinated signals repairing.I.e. be arranged on upper lid on upper position sensor and on lower lid under
Position sensor is used for the high pressure oil capacity for detecting each chamber, and when detecting chamber oil starvation therein, slippage pump is supplemented in time
The oil mass of chamber, particular up to setting.
One-way throttle valve is respectively mounted on the middle upper oil cavitie of the main oil pump and power-assisted oil cylinder, the connection oil circuit of middle lower oil cavitie
And gate gurgle valve；One-way throttle valve and gate gurgle valve are installed on the upper oil cavitie of the power-assisted oil cylinder and the connection oil circuit of accumulator；It is described
One-way throttle valve and gate gurgle valve are installed on the oil circuit that the lower oil cavitie of power-assisted oil cylinder is connected with the oil pocket of elevating ram.One-way throttle
Valve prevent each oil pocket enter it is fuel-displaced flow through big, gate gurgle valve prevents each oil pocket pressure from exceeding calibration value.
The main oil pump uses low pressure and mass flow oil pump, and slippage pump uses high-pressure low-flow oil pump；The switch valve is electricity
Magnetic switch valve.The reversal valve is three position four-way directional control valve, i.e., complete commutation action to complete upper and lower punching by three-position four-way valve
The conversion of journey.
The oil production method of the above-mentioned hydraulic pumping unit of application is then provided：
（1）, first start main oil pump when the hydraulic oil of upper oil cavitie in power-assisted oil cylinder is pumped into middle lower oil cavitie, middle lower oil cavitie
Pressure rise；Meanwhile, the gas potential energy release of accumulator storage promotes hydraulic oil to flow to the upper oil cavitie of power-assisted oil cylinder, upper oil cavitie
Pressure rise；Under the pressure effect of middle lower oil cavitie and upper oil cavitie hydraulic oil, the piston body of power-assisted oil cylinder is descending, by power-assisted oil
The hydraulic oil of cylinder lower oil cavitie is injected into the oil pocket of elevating ram, overcomes underground load to promote on the piston rod of well head elevating ram
OK, so as to be further driven to that polished rod is up to realize upstroke；When elevating ram moves to upper stroke switch, upper stroke switch to
Control system sends signal, and coordinated signals reversal valve carries out commutation action, and now upstroke is completed, and is prepared to enter into down stroke；
（2）, after commutation, the hydraulic oil of lower oil cavitie in power-assisted oil cylinder is pumped into middle upper oil cavitie, the pressure of middle upper oil cavitie by main oil pump
Power is raised；Meanwhile, the gravitional force of underground load pulls the piston rod of well head elevating ram descending so that elevating ram oil pocket
Hydraulic oil flow to the lower oil cavitie of power-assisted oil cylinder, the pressure rise of lower oil cavitie；In middle upper oil cavitie and the pressure of lower oil cavitie hydraulic oil
Under effect, the piston body of power-assisted oil cylinder is up, promotes the hydraulic oil of upper oil cavitie to enter accumulator, is converted into the gas of accumulator
Pressure potential；When elevating ram is moved to lower stroke switch, lower stroke switch sends signal to control system, and coordinated signals are changed
Commutation action is carried out to valve, now down stroke is completed, be prepared to enter into the upstroke of next oil pumping circulation.
Above-mentioned oil production method is still further comprised：
When setting of the pressure value that described pressure sensor is measured less than setting, i.e., send letter to control system
Number, coordinated signals repairing pump startup is to corresponding chamber repairing.
When setting of the oil mass that described position sensor is measured less than setting, i.e., signal is sent to control system,
Coordinated signals repairing pump startup is to corresponding chamber repairing.
When the oil pressure in each closing oil path exceedes calibration value, gate gurgle valve aerial drainage is opened.
The present invention reduces the discharge capacity of oil pump, reduces energy by increasing power-assisted oil cylinder between oil pump and lifting fluid cylinder
Consumption, while accumulator is indirectly connected with by power-assisted oil cylinder and elevating ram, pressure oscillation is small, and the impact to oil circuit is smaller, therefore
Substantially increase the stability of hydraulic system.
Brief description of the drawings
Fig. 1 is the structural representation of power-assisted oil cylinder；
Fig. 2 is the stereoscopic-state figure of power-assisted oil cylinder（Partly cut-away）；
Fig. 3 is the structural representation of shaft collar；
Fig. 4 is the stereoscopic-state figure of shaft collar；
The hydraulic pumping unit catenation principle schematic diagram for the use power-assisted oil cylinder that Fig. 5 is；
In figure, well head elevating ram 1, well head big four 1.1, stud 1.2, flange base 1.3, fluid cylinder 1.4, piston
Connecting rod 1.5, packing ring 1.6, nut 1.7, steel cable 1.8, crossbeam 1.9, optical-rod clamp 1.10, polished rod eye 1.11, polished rod 1.12 is up
Cheng Kaiguan 2.1, lower stroke switch 2.2, accumulator 3, pressure sensor 4.1-4.3, fuel tank 5, relief valve 6.1-6.4, power-assisted oil
Cylinder 7, upper lid 7.1, upper cylinder body 7.2, lower cylinder body 7.3, lower cover 7.4, lower position sensor 7.5, cavity of resorption hydraulic fluid port 7.6, piston seal
7.7th, 7.12, plunger seal 7.10, middle cavity of resorption hydraulic fluid port 7.8, middle epicoele hydraulic fluid port 7.9, piston body 7.11, gland 7.13, epicoele oil
Mouth 7.14, upper position sensor 7.15, one-way throttle valve 8.1-8.4, control system 9, electromagnetic switch valve 10.1-10.4, unidirectionally
Valve 11.1-11.3, motor 12.1-12.2, main oil pump 13.1, slippage pump 13.2, reversal valve 14, switch valve 15.1-15.2.
Embodiment
In conjunction with accompanying drawing, the present invention is further illustrated.These accompanying drawings are simplified schematic diagram, only with signal side
Formula illustrates the basic structure of the present invention, therefore it only shows the structure relevant with the present invention.
As shown in Figure 1-2, the power-assisted oil cylinder designed by the present invention.
Upper lid 7.1, upper cylinder body 7.2, lower cylinder body 7.3 and lower cover 7.4 are tightened together with bolt, constitute oil cylinder.Piston body
7.11 are tightened together with gland 7.13 with bolt, and in oil cylinder.Piston seal 7.12, the plunger seal 7.10 of formation
Oil cylinder is divided into upper oil cavitie, middle upper oil cavitie, middle lower oil cavitie and lower oil cavitie with piston seal 7.7, this four chambers pass through respectively
Epicoele hydraulic fluid port 7.14, middle epicoele hydraulic fluid port 7.9, middle cavity of resorption hydraulic fluid port 7.8 and cavity of resorption hydraulic fluid port 7.6 are communicated with outer oil circuit.
When injecting hydraulic oil to the middle lower oil cavitie of oil cylinder by middle cavity of resorption hydraulic fluid port 7.8, the pressure rise of middle lower oil cavitie is pushed away
Piston body is descending.Similarly, by upper oil cavitie from epicoele hydraulic fluid port 7.14 to oil cylinder inject hydraulic oil when, the pressure liter of upper oil cavitie
Height, promotes piston body descending.
Conversely, when injecting hydraulic oil to the middle upper oil cavitie of oil cylinder by middle epicoele hydraulic fluid port 7.9, the pressure liter of middle upper oil cavitie
Height, drives piston body up.Similarly, by lower oil cavitie from cavity of resorption hydraulic fluid port 7.6 to oil cylinder inject hydraulic oil when, the pressure of lower oil cavitie
Rise, promotes piston body up.
Upper position sensor 7.15 on upper lid 7.1 and the lower position sensor 7.5 on lower cover 7.4 are used
In the high pressure oil capacity for detecting each chamber, when detecting chamber oil starvation therein, the oil mass of the timely complementary cavity of slippage pump, one
Go directly to setting.
As shown in Figure 3-4, the designed hydraulic pumping unit shaft collar schematic diagram of the present invention.
The lower flange face of flange base 1.3 is fastened on by stud 1.2 in the upper flange surface of well head big four 1.1.
Two identical fluid cylinders 1.4 are separately mounted to the upper plane of flange base.The piston rod 1.5 of two fluid cylinders 1.4 passes through crossbeam
1.9 link together, and are fastened with clamp nut 1.7.Steel cable 1.8 bypasses the semi arch plate of crossbeam 1.9, and passes through on crossbeam
Two circular holes, two tail ends of steel cable are fastened by polished rod eye 1.11, and the polished rod 1.12 of oil well passes through polished rod eye 1.11, and uses polished rod
Clamp 1.10 is fastened.Using the connecting cross beam of steel cable 1.8 and polished rod, impact during stroke commutation can be reduced, is easy to regulation.
When hydraulic oil injection fluid cylinder 1.4 is without bar oil pocket, the pressure rise of no bar oil pocket promotes piston lower surface, gram
Take by polished rod 1.12, steel cable 1.8 and crossbeam 1.9 transmit Lai underground load, when pressure is further raised, the band of piston rod 1.5
Dynamic polished rod 1.12 is up, completes the upstroke of oil pumper.
When hydraulic oil flows back from fluid cylinder 1.4 without bar oil pocket, the pressure of no bar oil pocket declines, by polished rod 1.12, steel cable
1.8 and the underground load come of the transmission of crossbeam 1.9 overcome the pressure of piston lower surface, when pressure is further reduced, piston rod 1.5
Drive polished rod 1.12 descending, complete the down stroke of oil pumper.
As shown in figure 5, using the hydraulic pumping unit catenation principle schematic diagram of power-assisted oil cylinder.
The middle epicoele hydraulic fluid port 7.9 and middle cavity of resorption hydraulic fluid port 7.8 of power-assisted oil cylinder 7 pass through reversal valve 14（Three position four-way directional control valve）With
Oil-out and the oil return opening connection of main oil pump 13.1, are closing oil path.One-way throttle valve 8.2 and one-way throttle valve are installed on oil circuit
8.3, prevent middle upper oil cavitie and middle lower oil cavitie enter it is fuel-displaced flow through it is big.Relief valve 6.2 and relief valve 6.4 are installed on oil circuit, prevented
The middle upper oil cavitie and middle lower oil cavitie pressure of main oil pump 13.1 and power-assisted oil cylinder 7 exceed calibration value.
The upper oil cavitie of power-assisted oil cylinder 7 and accumulator 3（Differential piston accumulator）It is connected, is closing oil path.On oil circuit
One-way throttle valve 8.4 is installed, prevent upper oil cavitie and accumulator 3 enter it is fuel-displaced flow through it is big.Relief valve 6.1 is installed on oil circuit, prevented
The pressure of upper oil cavitie and accumulator exceedes calibration value.
Being connected without bar oil pocket for the elevating ram 1 that the lower oil cavitie of power-assisted oil cylinder 7 is installed with well head, is closing oil path.Oil
One-way throttle valve 8.1 is installed on road, prevents the oil for flowing to lower oil cavitie without bar oil pocket of elevating ram 1 from flowing through under big caused polished rod
Drop is too fast.Relief valve 6.3 is installed on oil circuit, prevents the pressure of lower oil cavitie and elevating ram 1 from exceeding calibration value.
The upper oil cavitie of power-assisted oil cylinder 7, middle upper oil cavitie, middle lower oil cavitie, lower oil cavitie are connected to the fuel-displaced of slippage pump 13.2
Mouth is connected, and the inlet port of slippage pump is connected with fuel tank 5.Check valve 11.1, check valve 11.2 and unidirectional are respectively mounted on oil circuit
Valve 11.3, prevents the hydraulic oil of each chamber from flowing back.Electromagnetic switch valve 10.1, electromagnetic switch valve 10.2 and electricity are respectively mounted on oil circuit
Magnetic switch valve 10.3, for controlling each chamber volume read-out of the slippage pump 13.2 to power-assisted oil cylinder 7.
The course of work：
When the hydraulic oil of upper oil cavitie in power-assisted oil cylinder 7 is pumped into middle lower oil cavitie by main oil pump 13.1, the pressure of middle lower oil cavitie
Rise.Meanwhile, the gas potential energy release that accumulator 3 is stored, the gas potential energy being stored in accumulator promotes hydraulic oil flow direction to help
The upper oil cavitie of power cylinder 7, the pressure rise of upper oil cavitie.Under the pressure effect of middle lower oil cavitie and upper oil cavitie pressure oil, power-assisted oil
The piston body 7.11 of cylinder 7 is descending, by the hydraulic oil of the lower oil cavitie of power-assisted oil cylinder 7 be injected into well head elevating ram 1 without bar oil pocket, gram
Take underground load（Rod weight+oil pumping rod of oil tube annular space liquid weight）, on the piston rod 1.5 for promoting well head elevating ram 1
OK, upstroke is carried out.When crossbeam contacts upper stroke switch 2.1, upper stroke switch 2.1 removes signal, control system to control system hair
System 9 controls reversal valve 14 to commutate, and upstroke is completed, and down stroke starts.
When main oil pump 13.1, the hydraulic oil of lower oil cavitie is pumped into middle upper oil cavitie, the pressure liter of middle upper oil cavitie from power-assisted oil cylinder 7
It is high.Meanwhile, underground load（Rod weight+oil pumping rod of oil tube annular space liquid weight）Gravitional force pull well head elevating ram 1
Piston rod 1.5 it is descending so that lower oil cavitie from high-pressure oil flow of the elevating ram 1 without bar oil pocket to power-assisted oil cylinder 7, lower oil cavitie
Pressure rise.Under the pressure effect of middle upper oil cavitie and lower oil cavitie hydraulic oil, the piston body 7.11 of power-assisted oil cylinder 7 is up, promotes
The hydraulic oil of upper oil cavitie enters accumulator 3, is converted into the pressure potential of the gas of accumulator, carries out down stroke action.Work as crossbeam
Lower stroke switch 2.2 is contacted, lower stroke switch 2.2 sends signal to control system, and the control reversal valve 14 of control system 9 commutates,
Down stroke is completed, and upstroke starts.
In the main oil pump course of work, the upper position sensor 7.15 installed on device, lower open position put sensor 7.5, up
Cheng Kaiguan 2.1, the timing acquiring signal of lower stroke switch 2.2, send control system to.When control system detects the numerical value of collection
During more than calibration value scope, signal is sent to the corresponding electromagnetic switch of electromagnetic switch valve, the action of each electromagnetic switch is determined, to phase
The chamber repairing answered, it is ensured that the oil mass of hydraulic system.
For those skilled in the art, under the premise without departing from the principles of the invention, it is possible to right
Partial structurtes make some improvements and modifications, and these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of oil production method of the hydraulic pumping unit of use power-assisted oil cylinder, it is characterised in that：
Hydraulic pumping unit includes main oil pump, accumulator, power-assisted oil cylinder, shaft collar and control system；In the power-assisted oil cylinder
One piston body with piston rod, piston body two ends piston and power-assisted oil cylinder inner wall formation piston seal, the work are installed
Fill in the intermediate seal circle formation plunger seal of connecting rod and power-assisted oil cylinder, thus by power-assisted cylinder cavity be divided into successively upper oil cavitie,
Middle upper oil cavitie, four chambers of middle lower oil cavitie and lower oil cavitie, and it is respectively equipped with hydraulic fluid port on each chamber；The shaft collar includes method
Two elevating rams that the well head big four of blue base and flange base bottom connection, top are symmetrically connected, two lifting oil
The piston rod of cylinder is linked together by crossbeam, and the middle part of crossbeam is connected with the polished rod of its bottom hung；The main oil pump
Middle upper oil cavitie, middle lower oil cavitie with power-assisted oil cylinder are connected to form closing oil path by reversal valve, the upper oil cavitie of the power-assisted oil cylinder
It is connected to form closing oil path with accumulator；The lower oil cavitie of power-assisted oil cylinder is connected to form closing oil with the oil pocket of elevating ram
Road；Be respectively equipped with upper and lower travel switch in the direction of motion of the elevating ram, and when elevating ram be respectively moved to it is upper and lower
During travel switch, the reversal valve that control system can be described in coordinated signals carries out commutation action；
The oil production method of the hydraulic pumping unit is：
（1）, first start main oil pump when the hydraulic oil of upper oil cavitie in power-assisted oil cylinder is pumped into middle lower oil cavitie, the pressure of middle lower oil cavitie
Rise；Meanwhile, the gas potential energy release of accumulator storage promotes hydraulic oil to flow to the upper oil cavitie of power-assisted oil cylinder, the pressure of upper oil cavitie
Power is raised；Under the pressure effect of middle lower oil cavitie and upper oil cavitie hydraulic oil, the piston body of power-assisted oil cylinder is descending, by under power-assisted oil cylinder
The hydraulic oil of oil pocket is injected into the oil pocket of elevating ram, overcomes underground load to promote the piston rod of well head elevating ram up,
So as to be further driven to, polished rod is up to realize upstroke；When elevating ram moves to upper stroke switch, upper stroke switch is to control
System processed sends signal, and coordinated signals reversal valve carries out commutation action, and now upstroke is completed, and is prepared to enter into down stroke；
（2）, after commutation, the hydraulic oil of lower oil cavitie in power-assisted oil cylinder is pumped into middle upper oil cavitie, the pressure liter of middle upper oil cavitie by main oil pump
It is high；Meanwhile, the gravitional force of underground load pulls the piston rod of well head elevating ram descending so that the liquid of elevating ram oil pocket
Force feed flows to the lower oil cavitie of power-assisted oil cylinder, the pressure rise of lower oil cavitie；Acted in the pressure of middle upper oil cavitie and lower oil cavitie hydraulic oil
Under, the piston body of power-assisted oil cylinder is up, promotes the hydraulic oil of upper oil cavitie to enter accumulator, is converted into the pressure of the gas of accumulator
Potential energy；When elevating ram is moved to lower stroke switch, lower stroke switch sends signal, coordinated signals reversal valve to control system
Commutation action is carried out, now down stroke is completed, be prepared to enter into the upstroke of next oil pumping circulation.
2. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 1, it is characterised in that：The horizontal stroke
Be machined with beam on half-arc groove and cross girder and be machined with circular hole, steel cable bypass half-arc groove and through the circular hole on cross girder with
Polished rod eye is fastened；Described polished rod is through polished rod eye and uses polished rod clamp fastening.
3. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 1, it is characterised in that：The liquid
Press oil pumper also include slippage pump, the slippage pump outlet respectively by switch valve, the upper oil cavitie of check valve and power-assisted oil cylinder,
Middle upper oil cavitie, middle lower oil cavitie and lower oil cavitie are connected, and the inlet port of the slippage pump is connected with fuel tank；Each described closing oil path
On be respectively mounted pressure sensor, and the pressure sensor can be with the slippage pump coordinated signals repairing.
4. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 3, it is characterised in that：It is described to help
The position sensor for detecting oil mass in power-assisted oil cylinder chamber is respectively mounted on the Shang Gai of power cylinder and lower lid, and can be with institute
State slippage pump coordinated signals repairing.
5. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 1, it is characterised in that：The master
One-way throttle valve and gate gurgle valve are respectively mounted on the middle upper oil cavitie of oil pump and power-assisted oil cylinder, the connection oil circuit of middle lower oil cavitie；It is described
One-way throttle valve and gate gurgle valve are installed on the upper oil cavitie of power-assisted oil cylinder and the connection oil circuit of accumulator；The lower oil of the power-assisted oil cylinder
One-way throttle valve and gate gurgle valve are installed on the oil circuit that chamber is connected with the oil pocket of elevating ram.
6. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 3, it is characterised in that：Work as institute
When the pressure value that the pressure sensor stated is measured is less than the setting set, i.e., signal is sent to control system, coordinated signals are mended
Pump start is to corresponding chamber repairing.
7. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 4, it is characterised in that：When described
The oil mass that measures of position sensor less than setting setting when, i.e., send signal, coordinated signals slippage pump to control system
Start to corresponding chamber repairing.
8. the oil production method of the hydraulic pumping unit of use power-assisted oil cylinder according to claim 5, it is characterised in that：When each
When oil pressure in closing oil path exceedes calibration value, gate gurgle valve aerial drainage is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590700.0A CN104314527B (en) | 2014-10-29 | 2014-10-29 | A kind of oil production method of the hydraulic pumping unit of use power-assisted oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590700.0A CN104314527B (en) | 2014-10-29 | 2014-10-29 | A kind of oil production method of the hydraulic pumping unit of use power-assisted oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314527A CN104314527A (en) | 2015-01-28 |
| CN104314527B true CN104314527B (en) | 2017-10-20 |
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| CN112855086A (en) * | 2021-02-26 | 2021-05-28 | 东华理工大学 | Load balance energy-saving hydraulic pumping unit |
| CN116592004B (en) * | 2023-07-14 | 2023-11-03 | 罗特液压(太仓)有限公司 | Combined stroke-adjustable piston type energy accumulator |
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| CN2038545U (en) * | 1988-09-22 | 1989-05-31 | 吉林石油机械厂 | Hydraulic beam pumping unit |
| CN101592026A (en) * | 2009-06-23 | 2009-12-02 | 四川大学 | A kind of novel energy-conserving hydraulic pumping unit |
| AR075581A1 (en) * | 2010-02-22 | 2011-04-20 | Contsur S A | OLEO-HYDRAULIC PUMP UNIT WITH INTENSIFIER |
| CN202531119U (en) * | 2011-12-13 | 2012-11-14 | 浙江师范大学 | Hydraulic pumping unit |
| CN103775031A (en) * | 2012-10-25 | 2014-05-07 | 顾心怿 | Main-auxiliary oil cylinder type hydraulic oil pumping machine |
| CN104033132B (en) * | 2013-03-07 | 2019-04-09 | 博世力士乐（常州）有限公司 | A kind of cylinder component and the hydraulic pumping unit with the cylinder component |
| CN203403865U (en) * | 2013-04-09 | 2014-01-22 | 王文雯 | Balanced energy-saving hydraulic oil pumping unit |
| CN103643921A (en) * | 2013-12-05 | 2014-03-19 | 中国石油大学(华东) | Gas balance type hydraulic twin-well pumping unit and using method thereof |
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Effective date of registration: 20210113 Address after: No.171 Fenhe Road, Dongying District, Dongying City, Shandong Province 257091 Patentee after: Shandong Plateau oil and gas equipment Co.,Ltd. Address before: 257091 No.232, Nanyi Road, Dongying District, Dongying City, Shandong Province Patentee before: SHENGLI OILFIELD HIGHLAND PETROLEUM EQUIPMENT Co.,Ltd. |