CN102192199B - Power driven system and oil pumping unit applying same - Google Patents
Power driven system and oil pumping unit applying same Download PDFInfo
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- CN102192199B CN102192199B CN201010273896.2A CN201010273896A CN102192199B CN 102192199 B CN102192199 B CN 102192199B CN 201010273896 A CN201010273896 A CN 201010273896A CN 102192199 B CN102192199 B CN 102192199B
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Abstract
The invention relates to a power transmission system and application thereof, in particular to a gas-liquid kinetic energy driven system and an oil pumping unit applying the same. The power driven system comprises a gas-liquid accumulator, an execution plunger cylinder, a plurality of reversing valves and a pressure pump, which form a driving oil way and an oil return way, and a closed loop consists of the driving oil way and the oil return way. The oil pumping unit adopts the driven system to drive an oil pumping rod to vertically move and can be folded. The power driven system saves energy resources and has high efficiency and good effects of low carbon and emission reduction, and the oil pumping unit has a simple structure, a small size, less easily-damaged mechanical parts and long service life. By the power driven system and the oil pumping unit, the technical problems that the power system in the prior art requires large motive power and has poor energy-saving effect, and the oil pumping unit is easily fatigue and damaged and has multiple faults are solved.
Description
Technical field
The present invention relates to a kind of power transmission system and application thereof, relate in particular to a kind of gas liquid operated drive system and apply the pumping unit of this system.
Background technique
At present, the oil recovery machiner of Oilfield using, all adopts mechanically operated slide beam and without beam pumping unit.It is slowed down through multi-stage gear by turning motor, affects the mechanism such as wire rope or chain to convert straight line motion to by horse head on walking beam, drives oil pumping polish rod to move up and down, realizes oil pumping object.As Chinese patent " beam type hydraulic oil pumping machine (CN2561926Y) ", it is made up of machinery and hydraulic pressure two-part.Wherein mechanical part retains original walking beam, horse head, support, chassis and rope hanger and outstanding rope; Hydraulic part comprises four chamber oil cylinders, main accumulator, reversing mechanism, oil sources and auxiliary system.After cylinder rod and walking beam, between arm of force end, have bearing to be connected and be connected two kinds of modes with special horse head, this machine completes balance and oil pumping function by main accumulator, oil cylinder and reversing mechanism; Realize in energy-conservation, motion fast lower slow, super disconnected year stopping alarm, liquid level stopping alarm, temperature stopping alarm, stroke jig frequency by auxiliary system and can be in harmonious proportion continuously the functions such as elimination sucker rod partial wear.The pumping unit kinetic characteristic of this structure is poor, mechanical efficiency is low, the degree of balance is poor, energy consumption is high, the volume defect such as heavily.The component of machine of these intermediate conversion mechanisms, complex structure, easily damaged parts are many, and running for a long time easily produces friction and tired, causes various faults.Also has Chinese patent " energy-saving type hydaulic oil pump (CN2194423Y) ", there are fuel tank, oil purifier, prime mover, variable displacement pump, safety valve, accumulator, electro-hydraulic reversing valve, oil hydraulic cylinder, driving belt, sucker rod, feature is that the rodless cavity of oil hydraulic cylinder has been communicated with an accumulating mechanism, and driving belt is fixed on pedestal after by a cylinder and a movable pulley being located on piston rod.This hydraulic structure is an open system, and energy-saving effect is bad.
Summary of the invention
The invention provides a kind of energy saving, efficiency is high, the power-driven system that low-carbon emission reduction is effective, and a kind of simple in structure, volume is little, and mechanical quick-wear part is few, the pumping unit of long service life; Solved the required motive force of the power system existing in prior art large, energy-saving effect is not ideal enough, the easy fatigue damage of pumping unit, the technical problem that fault is many.
The present invention also provides a kind of good seal performance simultaneously, safe, can automatic alarm, facilitate the power-driven system of better seal ring, and one can fold, the pumping unit of convenient carrying; Solved the power-driven system seal structure complex existing in prior art, mechanical efficiency of oil pumping unit is low, is difficult for the technical problem of carrying.
Above-mentioned technical problem of the present invention solves by following technical proposals: a kind of power-driven system, comprise gas-liquid accumulator and carry out plunger case, it is characterized in that: described gas-liquid accumulator is connected with hydraulic oil after the first 2/2-way valve, the first one-way valve, the first selector valve, compression pump and the second selector valve by pipeline successively and promotes to carry out plunger in plunger case and complete upstroke process and form and drive oil circuit; After the first selector valve commutation, plunger in execution plunger case is in down stroke process, after the pressurization of hydraulic oil by the first selector valve and compression pump, selecting return line to send hydraulic oil back to gas-liquid accumulator by the second selector valve forms oil return circuit, drives oil circuit and oil return circuit to form closed loop; Upstroke is mainly born by the regenerated energy of gas liquid operated, down stroke mainly by the load of load on plunger to the generation regenerated energy of exerting pressure of the fluid in plunger case.The upstroke process of plunger is by the expanding gas in gas-liquid accumulator, fluid to be exerted pressure, the gas liquid operated that fluid produces regeneration is converted to hydraulic energy, hydraulic energy is through compression pump repressurize, and the hydraulic energy after supercharging enters in two side columns plug cylinder active chamber by valve, high-pressure oil pipe, promotes plunger and rises.Plunger down stroke process, pumping unit minimum loading by oil pumping polish rod through plunger to plunger case exert pressure produce regenerated liquid pressure energy enter compression pump entry end, the hydraulic oil of extracting out in by plunger case chamber through compression pump supercharging is again sent gas-liquid accumulator back to, realize down stroke motion, thereby make oil circuit form closed loop, realize up-down stroke back and forth movement, upstroke is mainly born by the regenerated energy of gas liquid operated, compression pump only adds approximately 20% auxiliary energy to complete, down stroke mainly by the load of load on plunger to the generation regenerated energy of exerting pressure of the fluid in plunger case.Compression pump liquid only need add approximately 20% auxiliary energy to complete, and therefore the power-driven system energy-saving effect of gas liquid operated can reach more than 80%.
The mode of operation of the load of gas liquid operated can adopt full load also can adopt half load mode, full load mode, the maximum weight P=load deadweight P that the external load of plunger hoists
0+ dynamic load rating weight P
1, the pressure that bears of the gas-liquid accumulator of full load mode is P
q=P
0+ P
1, half load mode, the maximum weight P=load deadweight P that the external load of plunger hoists
0+ dynamic load rating weight P
1the pressure of the gas-liquid accumulator of/2, half load mode is to bear P
b=P
0+ P
1/ 2, full load declines with the plunger of load, by the deadweight P of load
0enter the entrance of compression pump to producing pressure oil in plunger case chamber, through compression pump P
1power increases to P again
q, send plunger case hydraulic oil back to gas-liquid accumulator, half load declines with the plunger of load, by the deadweight P of load
0enter the entrance of compression pump to producing pressure oil in plunger case chamber, through compression pump P
1/ 2 power increase to P again
b, send plunger case hydraulic oil back to gas-liquid accumulator, as preferably, the load rating of described compression pump is the dynamic load carrying out plunger and carry 1/2.The system balance of work is good like this, and stability is high.Adopt the energy storage pressure of full load large, cost is high, and half load energy storage pressure is little, and cost is low.
As preferably, between described gas-liquid accumulator and described the first 2/2-way valve, be connected with air supplying pump and the second 2/2-way valve.Just in case the gas leakage of gas-liquid accumulator, system acquisition, to air pressure dropping signal, starts tonifying Qi motor automatically, opens the second 2/2-way valve, and air supplying pump reaches setting value to the tonifying Qi of gas-liquid accumulator.The stability of raising system and balance.
As preferably, in described execution plunger case, be provided with plunger, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
Described execution plunger case adopts multi-stage sealed.Multi-stage sealed working principle: Y
xbetween RunddichtringO and plunger, minimum green diameter direction gap is 0.12～0.2mm, and under the effect of plunger case hydraulic pressure, first order seal ring, to Direction distortion radially, eliminates gap, realizes sealing.Remaining seal ring and hydraulic isolation, do not participate in seal operation.As process t
1after time, when first order seal ring increases to critical gap because of wearing clearance, or bear for a long time axial pressure because of seal ring, seal ring rearward end is got into gap and tear that (working pressure of general seal ring is up to 32Mpa, native system working pressure <7.5Mpa, occurs that this possibility of tearing is very little), now, first order seal ring lost efficacy, and departed from seal operation.The seal ring that hydraulic oil penetrates inefficacy immediately enters the second level.In like manner, second level seal ring is subject to hydraulic pressure, and seal ring, to Direction distortion radially, has been eliminated the gap between plunger, participates in seal operation, through t
2after time, second level seal ring is to critical gap or tear and lost efficacy, and departs from seal operation, has again third level seal ring to take over.Thus, a standby sealing system of constantly taking over of composition.Moreover when a seal ring job, all the other seal rings, in unloaded state, do not participate in sealing, therefore, these seal rings only produce small wearing and tearing, and the speed of its wearing and tearing is more much smaller than the working seal part of pressure-bearing.And job specification t
1>t
2>t
3..., >t
n-1>t
0=0.
Sealing system working index, is exactly the life-span of plunger operative minor, and the operating life of this multi-stage sealed device equals the working life sum of each Sealing.Native system multi-stage sealed, according to the abrasion index of Sealing or by the optimal number of determining Sealing in practice.Sealing position total working time limit design objective is greater than 10000h.Change whole seal rings if the corrective maintenance phase is decided to be the defects liability period of a year (365 × 24=8760h), just can guarantee the sealing position of the machine plunger case, in long-term failure-free operation.
Described gas liquid operated green low-carbon pumping unit, is characterized in that arranging forecast system sealing life.Between two-stage seal ring, pressure transducer is set, in real time closed chamber operating life is detected.When every one-level ring wear punctures the information of inefficacy, signal is sent to monitoring chamber by pressure transducer, understand the wear out failure information of this oil pumping unit seal circle for monitor staff, current what ring wear lost efficacy, and while entering the work of afterbody seal ring, detection system is by activating alarm, notice control room will be finished sealing life, must take urgent measure, change seal ring, guarantee the normal failure-free operation of gas liquid operated green low-carbon pumping unit.
Sealing mechanism arranges life-span distant warning device, between each Sealing, pressure transducer is set, when first order seal fails, when hydraulic pressure enters second level sealing, be contained in 1～2 grade of pressure transducer pressurized between seal ring and send signal, inform first order seal fails, the pressure transducer being positioned between 2～3 seal rings has signal, illustrate that second level seal ring lost efficacy, when to the last one-level sensor sends signal, illustrate that sealing system operating life will finish, system detects warning signal, inform that monitor staff must formulate immediately maintenance measures or change whole seal rings, guarantee that pumping unit normally moves.
As preferably, described execution plunger case comprises upper cylinder half and lower cylinder, described upper cylinder half and lower cylinder are bolted, joint at upper cylinder half and lower cylinder is provided with sealing gasket, the inner diameter of described upper cylinder half is less than the internal diameter of lower cylinder, described seal ring is positioned at the inwall of upper cylinder half, in the closed chamber that described plunger case forms, be provided with safe back-up ring, the upper end of described safe back-up ring is threaded with the lower end of described plunger, the external diameter of described safe back-up ring is not more than the internal diameter of described lower cylinder, and the external diameter of described safe back-up ring is greater than the internal diameter of described upper cylinder half.Upper cylinder half and lower cylinder seal by seal ring, thereby guarantee the sealability of plunger case.Because the external diameter of safe back-up ring is greater than the internal diameter of upper cylinder half, therefore safe back-up ring, in the time moving to the intersection of upper cylinder half and lower cylinder, just can not up move again.Be connected with safe back-up ring in the lower end of plunger, thus can retrain plunger on move the limit, once prevent that plunger from losing constraint, can as guided missile, penetrate, cause a serious accident, guarantee the reliable operation safety of plunger case.
A kind of pumping unit that adopts above-mentioned power-driven system, comprise base, on described base, be connected with mobile base, in described mobile base, be fixed with plunger case and gas-liquid accumulator, being provided with plunger case fixing frame and being positioned at the protective housing fixing frame of plunger case fixing frame top of described gas-liquid accumulator, on described plunger case fixing frame, be connected with lower cable wind rope, on described protective housing fixing frame, be connected with cable wind rope, plunger end in described plunger case is connected with crossbeam, on described crossbeam, be fixed with oil pumping polish rod, on described base, be connected with one end of the oil cylinder that rises and retires, the other end of the described oil cylinder that rises and retires is connected to and rises and retires on cylinder bracket, on described guard shield fixing frame, be connected with protective housing, be connected with one end of folding oil cylinder on described protective housing, the other end of described folding oil cylinder is fixed on folding cylinder bracket.Plunger is connecting oil pumping polish rod, realizes oil pumping action thereby the motion of plunger drives oil pumping polish rod to move up and down, and guarantees the normal work of pumping unit.Can adjust rising and retiring of member in mobile base by the oil cylinder that rises and retires, convenient folding, folding oil cylinder also can be adjusted the folded state of protective housing simultaneously.Whole pumping unit member is few, and complete machine does not have the easily damaged partss such as intermediate conversion mechanism such as gear, bearing, wire rope, chain, simple in structure, lightweight, reliable performance, and efficiency is high.Protective housing is in order to protect plunger not corroded by dust dust storm, and hawser makes pumping unit normally operation in any terrible weather environment.
As preferably, described base comprises fixed base and activity adjustment seat, on fixed base, be provided with horizontal slide rail, on described horizontal slide rail, be provided with activity adjustment seat, the bottom of described activity adjustment seat is provided with the transverse groove coordinating with horizontal slide rail, on described activity adjustment seat, be provided with the longitudinal slide rail vertical with horizontal slide rail, described mobile base bottom is provided with the projection coordinating with longitudinal rail, described mobile base and described activity adjustment seat are bolted, one end of the described oil cylinder that rises and retires is fixed on activity adjustment seat, the described cylinder bracket that rises and retires is positioned on described gas-liquid accumulator, described folding cylinder bracket is fixed on gas-liquid accumulator.Activity adjustment seat can be in longitudinal sliding motion on longitudinal slide rail, thereby adjust the lengthwise position of mobile base, simultaneously, mobile base again can be laterally movable on activity adjustment seat, thereby adjust the lateral attitude of mobile base, after adjusting mobile base and activity adjustment seat hawser is fastened, thereby oil pumping polish rod is aimed to pithead position, implement oil pumping.
As preferably, on described protective housing, be connected with transition oil cylinder, one end of described transition oil cylinder is connected on protective housing by transition buffer plate, and the other end of described transition oil cylinder is fixed on plunger case fixing frame.On protective housing, translate into center of gravity transition point, the bottom contact transition cushion plate of protective housing, center of gravity is crossed after transition point, and protective housing is along with transition oil cylinder is slowly return, and plane on protective housing bottom contact shielding support, has stirred on protective housing.Transition oil cylinder and transition buffer plate the stationarity that has improved protective housing umklapp process is set, thereby make structure more reasonable, operate more stable.
Therefore, a kind of power-driven system of the present invention and the pumping unit of applying this power-driven system thereof possess following advantage: power-driven system adopts closed loop half load mode to operate, save the energy, Multi-level sealing structure, safe, structural stability, Economy compact and reasonable, system lifting process balance.Pumping unit volume is little, and complete machine does not have quick-wear part, long service life, convenient mobile and adjustment.
Accompanying drawing explanation
Fig. 1 is the plan view of pumping unit of the present invention.
Fig. 2 is the left view in Fig. 1.
Fig. 3 is the pumping unit complete machine schematic diagram of droping to the ground.
Fig. 4 is the folding schematic diagram of protective housing.
Fig. 5 is the sectional structure schematic diagram of left plunger case.
Fig. 6 is the schematic diagram of power-driven system.
In figure 1, fixed base, 2, longitudinally slide rail, 3, activity adjustment base, 4, the oil cylinder that rises and retires, 5, base bearing pin 5A, mobile base, 6, gas-liquid accumulator, 7, left plunger case, 8, right plunger case, 9, folding oil cylinder 10, plunger case fixing frame, 11, protective housing fixing frame, 11a, excessively oil cylinder, 11b, excessively cushion plate, 12, protective housing, 13, upper cable wind rope, 14, protective housing bearing pin, 14A, folding oil cylinder bearing pin, 15, lower cable wind rope 16, folding cylinder bracket, 17, bolt, 17A, bearing pin, 17B, the cylinder bracket that rises and retires, 18, well head, 19, oil pumping polish rod is device in succession, and 20, oil pumping polish rod, 21, oil pumping polish rod sheath, 22, upper cylinder half, the right plunger of 22A, 23, crossbeam, 23A, pulling force sensor, 23B, lower cylinder, 23C, sealing gasket, the left plunger of 24A, 24C, safe back-up ring, 24, first order seal ring, 25, second level seal ring, 26, third level seal ring, 27, fourth stage seal ring, 28, N level seal ring, 29, final stage seal ring, 31 dust-proof seal rings, 32, last stage pressure sensor, 33, N stage pressure sensor, 34, third level pressure transducer, 35, second level pressure transducer, 36, first order pressure transducer 37, digital pressure gauge, 38, the first one-way valve 39, the first 2/2-way valve, 40, compression pump, 41, stop valve, 42, compression pump motor, 42A, oil return circuit, 43, the second selector valve, 44, drive oil circuit, 45, the first selector valve, 46, the second one-way valve, 47, tonifying Qi motor, 48, air supplying pump, 49, the second 2/2-way valve
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technological scheme of invention is described in further detail.
Embodiment:
As shown in Figure 1, a kind of pumping unit, comprise fixed base 1, on fixed base 1, be fixed with horizontal slide rail 2, laterally on slide rail 2, activity adjustment seat 3 is being installed, the bottom of activity adjustment seat 3 offers the horizontal concrete chute coordinating with horizontal slide rail 2, mobile base 5A is installed on activity adjustment seat 3, be provided with the longitudinal slide rail vertical with horizontal slide rail at the upper surface of activity adjustment seat 3, be provided with the projection coordinating with longitudinal slide rail in the bottom surface of mobile base 5A, fixing by bolt 17 after the Relative position determination of mobile base 5A and activity adjustment seat 3.On mobile base 5A, be fixed with the left plunger case 7 that is positioned at front end, right plunger case 8 and the gas-liquid accumulator 6 that is positioned at plunger case rear side, gas-liquid accumulator 6 is cylindric, the upper fixing column plug cylinder fixing frame 10 of gas-liquid accumulator 6 and the protective housing fixing frame 11 that is positioned at plunger case fixing frame 10 tops, on plunger case fixing frame 10, be connected with lower cable wind rope 15, on protective housing fixing frame 11, be connected with cable wind rope 13, plunger end in plunger case is connected with crossbeam 23, on crossbeam 23, be fixed with oil pumping polish rod 20, be connected with one end of the oil cylinder 4 that rises and retires at activity adjustment seat 3, the other end of oil cylinder 4 of rising and retiring is connected to and is risen and retired on cylinder bracket 17B by bearing pin 17A, the oil cylinder 17B that rises and retires is fixed on gas-liquid accumulator 6, on guard shield fixing frame 11, be connected with protective housing 12, on protective housing 12, be connected with one end of folding oil cylinder 9 by folding oil cylinder bearing pin 14A, the other end of folding oil cylinder 9 is fixed on folding cylinder bracket 16, folding cylinder bracket 16 is fixed on gas-liquid accumulator 6 too, and folding cylinder bracket 16 is positioned at the top of the cylinder bracket 17B that rises and retires.
On gas-liquid accumulator, gas-liquid accumulator 6, left plunger case 7, right plunger case 8 are fixed on mobile base 5A above, composition Framework of Pumping Unit.Mobile base 5A is hinged on base bearing pin 5, and the cylinder bottom earrings of the oil cylinder 4 that rises and retires is hinged on activity adjustment seat 3, and the piston rod head earrings of the oil cylinder 4 that rises and retires is hinged on the bearing pin 17A at gas-liquid accumulator 6 middle parts.Protective housing 12 is hinged on the protective housing bearing pin 14 of shielding support 11.The bottom earrings of folding oil cylinder 9 is hinged on the bearing pin of folding cylinder bracket 16, and the piston rod head earrings of folding oil cylinder 9 is hinged on folding oil cylinder bearing pin 14A.
Regulate activity adjustment seat 3, just the oil pumping polish rod on support 20 accurately can be aimed to well head 18.Tight a bolt 17, be fixed on activity adjustment seat 3, then tighten the bolt that each activity adjustment seat 3 is connected with fixed base 1, regulate oil pumping polish rod and pithead position just to complete.
On one group, cable wind rope 13 ties up to protective housing 12 tops, and the lower cable rope 15 of another group ties up on shielding support 11, and lower end ties up on earth anchor, the attack that the function that makes to pump is resisted strong storm.
As shown in Figure 2, oil pumping polish rod 20 be enclosed within oil pumping polish rod sheath 21 in, the lower end of oil pumping polish rod 20 is provided with polished rod connector 19, the upper end of oil pumping polish rod 20 is provided with pulling force sensor 23A.Plunger 22A, 24A in protective housing 12 protection motions, form totally-enclosed system, and protection left and right plunger 22A, 24A and oil pumping polish rod 20 are not subject to ambient wind dust pollution.
As shown in Figure 3, lay down being connected of cable wind rope 13 and earth anchor, under while turning over, start excessive oil cylinder 11a, promote excessive cushion plate 11b, excessively cushion plate 11b and protective housing 12 are that bearing pin 14 is the center of circle jointly, excessively cushion plate 11b is attached to protective housing 12 bottoms, along with excessive oil cylinder 11a rises, protective housing 12 is to counterclockwise rotation, when the center of gravity that forwards protective housing 12 to is crossed transition point, folding oil cylinder 9 relays, excessively oil cylinder 11a cylinder stops, and protective housing 12, along with folding oil cylinder 9 is slowly return, is rotated down 180 degree.
While turning on protective housing 12, handle folding oil cylinder 9, protective housing 12 is take bearing pin 14 as the center of circle, and along with the rising of folding oil cylinder 9, protective housing 12 turns over along clockwise direction, on translate into center of gravity transition point, the bottom of protective housing 12 contacts excessive cushion plate 11b, and center of gravity is crossed after transition point, and protective housing 12 is along with excessive oil cylinder 11a slowly returns, plane on protective housing 12 bottom contact shielding supports 11, has stirred on protective housing 12.
As shown in Figure 4, the pumping unit complete machine mechanism that erects, drops to the ground, Framework of Pumping Unit 6 is supported on mobile base 5A.Mobile base 5A is take base bearing pin 5 as the center of circle, starts the both sides oil cylinder 4 that rises and retires, and drives pumping unit complete machine stand up counterclockwise or drop to the ground clockwise.
A kind of power-driven system, as shown in Figure 6, comprise gas-liquid accumulator 6, digital pressure gauge 37 is installed on gas-liquid accumulator 6, the outlet port of gas-liquid accumulator 6 is provided with stop valve 41, gas-liquid accumulator 6 is connected with the first 2/2-way valve 39 by pipeline successively, the first one-way valve 38, the first selector valve 45, left plunger 24A and right plunger 22A that compression pump 40 and the rear hydraulic oil of the second selector valve 43 promote in left plunger case 7 and right plunger case 8 complete upstroke process formation driving oil circuit 44, on compression pump, connect compression pump motor 42, the structure of left plunger case 7 and right plunger case 8 is identical, between gas-liquid accumulator 6 and described the first two-way valve 39, be connected with air supplying pump 48 and the second 2/2-way valve 49, on air supplying pump 48, be connected with tonifying Qi motor 47, just in case gas-liquid accumulator 6 leaks gas, system acquisition is to air pressure dropping signal, automatically start tonifying Qi motor, open the second 2/2-way valve, air supplying pump 48 reaches setting value to 6 tonifying Qi of gas-liquid accumulator.In the time that needs carry out down stroke process, after the first 2/2-way valve 39 is commutated, carry out plunger in plunger case in down stroke process, after the pressurization of hydraulic oil by the first selector valve 45 and compression pump 40, the load rating of compression pump is the dynamic load carrying out plunger and carry 1/2.Select oil return circuit 42A to send hydraulic oil back to gas-liquid accumulator 6 by the second selector valve 43 and form oil return circuit, drive oil circuit 44 and oil return circuit 42A to form closed loop.
As shown in Figure 5, carry out plunger case and comprise upper cylinder half 22 and lower cylinder 23, upper cylinder half 22 and lower cylinder 23 are bolted, and are provided with sealing gasket 23C in the joint of upper cylinder half 22 and lower cylinder 23, and the inner diameter of upper cylinder half is less than the internal diameter of lower cylinder.On the inwall of upper cylinder half 22, offer the annular groove being parallel to each other, in annular groove, be provided with multistage dense seal, between every two adjacent seal rings, pressure transducer is installed.Carry out in plunger case and be provided with plunger 24A, one end of plunger 24A is connecting crossbeam, the other end of the plunger safe back-up ring 24C that is threaded, the identical internal diameter that is greater than upper cylinder half 22 of internal diameter of the external diameter of safe back-up ring 24C and lower cylinder 23.
As shown in Figure 5, upper cylinder half 22 is equipped with multistage dense seal 24～29, adopt Yx type or U-shaped seal ring, multistage dense seal 24～29, between seal ring and plunger 20, minimum green diameter direction gap is 0.12～0.2mm, when plunger case work, hydraulic oil in drive post plug cylinder is exerted pressure to first order seal ring 24, first order seal ring 24, to diametric(al) distortion, eliminates gap, realizes sealing.Remaining seal ring 25～29 and hydraulic oil isolation, do not participate in seal operation.When after the t1 time, when first order seal ring 24 increases to critical gap because of wearing clearance, first order seal ring 24 lost efficacy, and departed from seal operation, and the first order seal ring 24 that hydraulic oil penetrates inefficacy immediately enters the second level.In like manner, second level seal ring 25 is subject to air pressure, and second level seal ring 25, to Direction distortion radially, has been eliminated the gap between plunger 24A,
Participate in seal operation, after the t2 time, second level seal ring 25 may wear to critical gap and lost efficacy, and departs from seal operation, has again third level seal ring 26 to take over.Thus, one of composition has the standby sealing system of constantly taking over.Moreover in the time of a seal ring job, all the other seal rings, in unloaded state, do not participate in sealing, therefore, these seal rings only produce small wearing and tearing, and the speed of its wearing and tearing is more much smaller than the seal ring of pressure-bearing work.And job specification t1>t2>t3 ..., >tn-1>t0=0.
In Fig. 5, N level seal ring 28 is according to the abrasion index of seal ring or by the best (N level) quantity of determining seal ring in practice.Sealing system working index, is exactly the life-span of plunger operative minor, and the operating life of this multi-stage sealed device equals the working life sum of each seal ring.The multi-stage sealed device of native system, total working time limit design objective is greater than 10000 hours.Change all sealings if the corrective maintenance phase is decided to be 1 year (365 × 24=8760 hour), just can guarantee the soft seal position of the machine drive post plug cylinder, in continuously long-term failure-free operation.
Safe back-up ring 24C in Fig. 5 is fixed on plunger base, and constraint moves the limit on plunger, when the left plunger 24A of the upper plane contact lower plane of safe back-up ring 24C, retrains the left plunger 24 A limit that moves up.Once prevent oil pumping polish rod fracture, left plunger 24A loses constraint, can penetrate as guided missile, causes a serious accident, and guarantees plunger case reliable operation, safety.
In embodiment shown in Fig. 6, before using, gas-liquid accumulator 6 is added to appropriate fluid, and implement inflation, reach setting air pressure for subsequent use.While starting working, open stop valve 41, when upstroke, intelligent control system instruction the first 2/2-way valve 39, the first selector valve 45, the second selector valve 43 up stroke directions, start compression pump motor 42, drive compression pump 40, gas-liquid accumulator 6 expanding gas are exerted pressure to fluid, produce gas liquid operated and be converted to hydraulic energy, hydraulic energy is through the first 2/2-way valve 39, the first selector valve 45 enters the entry end of compression pump 40, compression pump motor 42 drives compression pump 40 repressurizes, hydraulic oil after supercharging is from compression pump 40 outlet end outputs, inject left and right plunger case 7 through the second selector valve 43 along driving oil circuit 44, 8 active chamber, hydraulic energy promotes left and right plunger 24A, 22A rises, and drive crossbeam 23, oil pumping polish rod 20 rises, realize upstroke motion.
When down stroke, intelligent system instruction the first 2/2-way valve 39 cuts out, the second selector valve 43, the first selector valve 45 commutates, start compression pump motor 42, compression pump motor 42 drives compression pump 40 to turn round, compression pump 40 is by left and right plunger case 7, hydraulic oil in 8 active chambers is extracted out, the minimum Cheng Zaihe of pumping unit is by drop-down oil pumping polish rod 20, oil pumping polish rod 20 drives crossbeam 23, by left and right plunger 24A, 22A is to plunger case 7, 8 chamber inner fluids are exerted pressure, the hydraulic energy that produces regeneration enters compression pump 40 entry ends, after compression pump 42 repressurizes, exported by compression pump 40 outlet end, again through the second selector valve 43, oil return circuit 42A sends gas-liquid accumulator 6 back to, make oil circuit form closed loop, realize up-down stroke and come and go shuttling movement.
Control compression pump motor 42 speed, equal to control the flow of compression pump 40, be also speed or the jig frequency of controlling oil pumping polish rod 20 simultaneously, realizes the object of stepless speed regulation.
Just in case the gas leakage of gas-liquid accumulator, system acquisition, to the air pressure dropping signal of digital pressure gauge 37, starts tonifying Qi motor 47 automatically, opens the second 2/2-way valve 49, and air supplying pump 48 reaches setting value to the tonifying Qi of gas-liquid accumulator.
Upper table is 12 type gas liquid operated oil pumping unit technical parameter and computational charts
Learn from above-mentioned calculating:
Gas liquid operated low-carbon (LC) pumping unit is more energy-conservation up to more than 80% than traditional beam pumping unit.
12 type pumping units reduce power of motor 30.636kw, equal economize on electricity 30.636kw/h per hour (degree), 1 year economize on electricity 365 × 24=8760 × 30.636=268371.36=26.84 ten thousand (degree), equal to save standard coal 26.84 × 0.4=107.36 ton, reduce by disposal of pollutants 26.84 × 0.272=73004.8 kilogram=73 tons carbon simultaneously, 26.84 × 0.785=210694 kilogram=210.69 tons carbon dioxide are (according to expert statistics: (kilowatt hour) electricity is spent in every saving 1, save 0.4 kilogram of standard coal with regard to corresponding, reduce disposal of pollutants 0.272 kg of carbon simultaneously, 0.785 kilogram of carbon dioxide).Above-mentioned energy-saving and emission-reduction, low-carbon environment-friendly achievement, will make major contribution for society.
26.84 ten thousand degree electricity (by 1.80 yuan of Hangzhou electricity price for industrial uses/degree), can save the electricity charge of 48.312 ten thousand yuan/year, make user's Reducing Cost in Enterprises, the strong impetus of increasing economic efficiency.
Meanwhile, the reform of oil extraction in oil field technique being produced to important meaning, is the arrival of oil production technology New Times.
Claims (6)
1. a pumping unit, comprise base and power-driven system, it is characterized in that: on described base, be connected with mobile base, in described mobile base, be fixed with plunger case and gas-liquid accumulator, being provided with plunger case fixing frame and being positioned at the protective housing fixing frame of plunger case fixing frame top of described gas-liquid accumulator, on described plunger case fixing frame, be connected with lower cable wind rope, on described protective housing fixing frame, be connected with cable wind rope, plunger end in described plunger case is connected with crossbeam, on described crossbeam, be fixed with oil pumping polish rod, on described base, be connected with one end of the oil cylinder that rises and retires, the other end of the described oil cylinder that rises and retires is connected to and rises and retires on cylinder bracket, on described guard shield fixing frame, be connected with protective housing, be connected with one end of folding oil cylinder on described protective housing, the other end of described folding oil cylinder is fixed on folding cylinder bracket, described power-driven system comprises gas-liquid accumulator and plunger case, and described gas-liquid accumulator is connected with hydraulic oil after the first 2/2-way valve, the first one-way valve, the first selector valve, compression pump and the second selector valve by pipeline successively and promotes plunger in plunger case and complete upstroke process and form and drive oil circuit, after the first selector valve commutation, plunger in plunger case is in down stroke process, after the pressurization of hydraulic oil by the first selector valve and compression pump, select return line to send hydraulic oil back to gas-liquid accumulator by the second selector valve and form oil return circuit, drive oil circuit and oil return circuit to form closed loop, on described protective housing, be connected with transition oil cylinder, one end of described transition oil cylinder is connected on protective housing by transition buffer plate, and the other end of described transition oil cylinder is fixed on plunger case fixing frame, 1/2 of the dynamic load that the load rating of the compression pump in described power-driven system is carried for the plunger in power-driven system.
2. pumping unit according to claim 1, it is characterized in that: described base comprises fixed base and activity adjustment seat, on fixed base, be provided with horizontal slide rail, on described horizontal slide rail, be provided with activity adjustment seat, the bottom of described activity adjustment seat is provided with the transverse groove coordinating with horizontal slide rail, on described activity adjustment seat, be provided with the longitudinal slide rail vertical with horizontal slide rail, described mobile base bottom is provided with the projection coordinating with longitudinal rail, described mobile base and described activity adjustment seat are bolted, one end of the described oil cylinder that rises and retires is fixed on activity adjustment seat, the described cylinder bracket that rises and retires is positioned on described gas-liquid accumulator, described folding cylinder bracket is fixed on gas-liquid accumulator.
3. pumping unit according to claim 1, is characterized in that: between the first 2/2-way valve in the gas-liquid accumulator in described power-driven system and described power-driven system, be connected with air supplying pump and the second 2/2-way valve.
4. pumping unit according to claim 1, it is characterized in that: in the plunger case in described power-driven system, be provided with plunger, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
5. pumping unit according to claim 4, it is characterized in that: in the plunger case in described power-driven system, be provided with plunger, on the inwall of plunger case, be provided with the annular groove that several are parallel to each other, in groove, be provided with seal ring, between adjacent two seal rings, be provided with pressure transducer.
6. pumping unit according to claim 5, it is characterized in that: described plunger case comprises upper cylinder half and lower cylinder, described upper cylinder half and lower cylinder are bolted, joint at upper cylinder half and lower cylinder is provided with sealing gasket, the inner diameter of described upper cylinder half is less than the internal diameter of lower cylinder, described seal ring is positioned at the inwall of upper cylinder half, in the closed chamber that described plunger case forms, be provided with safe back-up ring, the upper end of described safe back-up ring is threaded with the lower end of described plunger, the external diameter of described safe back-up ring is not more than the internal diameter of described lower cylinder, the external diameter of described safe back-up ring is greater than the internal diameter of described upper cylinder half.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010273896.2A CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010273896.2A CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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| CN102192199A CN102192199A (en) | 2011-09-21 |
| CN102192199B true CN102192199B (en) | 2014-05-21 |
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| CN201010273896.2A Expired - Fee Related CN102192199B (en) | 2010-09-07 | 2010-09-07 | Power driven system and oil pumping unit applying same |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061717B (en) * | 2013-01-05 | 2015-09-02 | 无锡市科优液压设备制造有限公司 | A kind of four cylinder type hydraulic oil pumps |
| CN103061718A (en) * | 2013-01-05 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Dual-plunger cylinder type hydraulic pumping unit |
| CN103075133A (en) * | 2013-01-05 | 2013-05-01 | 无锡市科优液压设备制造有限公司 | Flow compensation type hydraulic pumping unit |
| CN104179666A (en) * | 2013-05-24 | 2014-12-03 | 中国石油化工股份有限公司 | Hydraulic oil pumping device and method |
| CN104370228A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Winch and oil pumping unit |
| CN104386609B (en) * | 2014-11-12 | 2017-02-22 | 中国石油天然气股份有限公司 | Lifting device |
| CN106321024B (en) * | 2016-08-31 | 2018-09-28 | 胜利油田高原石油装备有限责任公司 | Motivation does not replace the hydraulic pumping unit and method of oil cylinder piston sealing element |
| CN113089477A (en) * | 2021-04-06 | 2021-07-09 | 四川川交路桥有限责任公司 | Hanging basket suspension system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1316593A (en) * | 2001-02-08 | 2001-10-10 | 杨崇恩 | Electromagnetic pumping unit |
| CN1685161A (en) * | 2002-12-13 | 2005-10-19 | 新履带牵引车三菱有限公司 | Working machine driving unit |
| WO2009132765A1 (en) * | 2008-05-02 | 2009-11-05 | Robert Bosch Gmbh | Vehicle, in particular mobile work machine |
| CN101654915A (en) * | 2009-09-01 | 2010-02-24 | 四川省成都普什机电技术研究有限公司 | Excavator energy-recuperation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201991493U (en) * | 2010-09-07 | 2011-09-28 | 杨崇恩 | Energy-saving gas liquid operated oil pumping unit |
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2010
- 2010-09-07 CN CN201010273896.2A patent/CN102192199B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316593A (en) * | 2001-02-08 | 2001-10-10 | 杨崇恩 | Electromagnetic pumping unit |
| CN1685161A (en) * | 2002-12-13 | 2005-10-19 | 新履带牵引车三菱有限公司 | Working machine driving unit |
| WO2009132765A1 (en) * | 2008-05-02 | 2009-11-05 | Robert Bosch Gmbh | Vehicle, in particular mobile work machine |
| CN101654915A (en) * | 2009-09-01 | 2010-02-24 | 四川省成都普什机电技术研究有限公司 | Excavator energy-recuperation system |
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| CN102192199A (en) | 2011-09-21 |
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