CN2189218Y - Hydraulic oil pumping machine - Google Patents
Hydraulic oil pumping machine Download PDFInfo
- Publication number
- CN2189218Y CN2189218Y CN 94202553 CN94202553U CN2189218Y CN 2189218 Y CN2189218 Y CN 2189218Y CN 94202553 CN94202553 CN 94202553 CN 94202553 U CN94202553 U CN 94202553U CN 2189218 Y CN2189218 Y CN 2189218Y
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- CN
- China
- Prior art keywords
- motor
- oil
- pump
- communicated
- variable displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005086 pumping Methods 0.000 title claims abstract description 22
- 239000010720 hydraulic oil Substances 0.000 title abstract description 3
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 28
- 239000002828 fuel tank Substances 0.000 claims description 7
- 239000003921 oil Substances 0.000 abstract description 34
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model relates to a power recovery hydraulic oil pumping machine, which comprises an oil supply unit and a variable pump-motor. The oil supply unit is composed of an oil box, an oil filter, a prime mover, a hydraulic pump, a safety valve and an accumulator. One end of the variable pump-motor is communicated with the hydraulic pump. The other end of the variable pump-motor is communicated with the oil box. An output end of the variable pump-motor drives a pumping rod to do reciprocating movement through a transmission mechanism, a roller and a transmission belt. A governor valve can be connected between the hydraulic pump and the variable pump-motor. Torque can be altered by altering the value of the discharge capacity of the variable pump-motor to realize the reciprocating work of an oil-well pump. The utility model has the advantages of compact structure, low dissipation of energy, long stroke, low stroke frequency and heavy load. The utility model has the function of security protection, which is suitable for using in oilfield exploitation.
Description
The utility model relates to the equipment of recover petroleum in the oil field, a kind of Power Recovery type hydraulic pumping unit.
The mechanical pumping unit that is used for oilfield exploitation can be divided into sucker rod pumping equipment and rodless pumping unit two classes, and sucker rod pumping equipment is used the most extensively, and its development is also paid attention to day by day.Pumping unit is the Power Drive Unit of sucker rod pumping equipment, and it is the important component part that constitutes " three take out " (being pumping unit, sucker rod, oil well pump) equipment system.Pumping unit also can be divided into slide beam and no beam type two classes.It is comparatively general that beam pumping unit uses, but huge because of its structure, weight big, balanced incomplete, thereby development eases up; No girder-like oil pump, two kinds of mechanical transmission-type and fluid transmission types are arranged, because fluid transmission type is hydraulic pumping unit particularly, have compact structure, in light weight, realize long stroke, low jig frequency and heavy load easily, thereby just in accelerated development, but present hydraulic pumping unit, adopt counterweigh or gas balance no matter be, general all can not reach complete equilibrium, cause the gravitational potential energy of recovery limited, and the Brake Energy during to commutation can't be added at all.
The new purpose of this practicality is: adopt variable displacement pump-motor driven in hydraulic pumping unit, combine with equilibrium problem and with the Power Recovery problem, by the conversion to energy, realize Power Recovery, can overcome the existing problem of background technique.
For achieving the above object, the technical solution of the utility model is: it comprises fuel tank, oil purifier, prime mover, oil hydraulic pump, safety valve, accumulator, driving mechanism, cylinder, driving belt, sucker rod, variable displacement pump-motor that one end is communicated with oil hydraulic pump, the other end is communicated with fuel tank, the output terminal of variable displacement pump-motor drives the sucker rod to-and-fro motion through driving mechanism, cylinder, driving belt.Also can speed limited valve be arranged indirectly at oil hydraulic pump and variable displacement pump-motor.This structure is the displacement size by change variable displacement pump=motor, and then changes the working in reciprocating mode that moment of torsion is realized oil well pump.
Below in conjunction with accompanying drawing,, provide working procedure of the present utility model and some details by description to embodiment.
Fig. 1, a kind of structural representation of the present utility model;
Fig. 2, another kind of structural representation of the present utility model.
As shown in Figure 1 and Figure 2, oil supplying device of the present utility model comprises fuel tank 1, oil purifier 2, prime mover 3, oil hydraulic pump 4, safety valve 5, accumulator 6, when starting working, prime mover 3(can be motor or internal-combustion engine) to drive oil hydraulic pump 4(can be variable displacement pump or metering pump) rotate, export a certain amount of high pressure oil, pressure is by the pre-inflation pressure decision of accumulator 6.Suppose that sucker rod is earlier from upstroke, at this moment variable displacement pump-motor 8 is under the effect of hydraulic pressure Variable Control mechanism, discharge capacity increases, thereby output torque increases, variable displacement pump-motor 8 is operated in the motor operating mode, it can be wire rope or adhesive tape by driving mechanism stretching driving belt 11(), thus the upstroke of sucker rod 12 begun; When sucker rod 12 arrives predetermined top dead center, the Variable Control mechanism action of variable displacement pump-motor 8, discharge capacity reduces, thereby output torque reduces, sucker rod 12 from redrawing driving belt 11, overcome variable displacement pump-motor 8 less moments of torsion and counterrotating makes it be operated in the pump operating mode by driving mechanism, thus oil-filled to accumulator 6.Circulation has just constituted the continuous operation of pumping unit like this.From working procedure as can be seen, when sucker rod 12 descends, not only its part gravitational potential energy reclaims to accumulator 6 oil-filled obtaining by variable displacement pump-motor 8, and forward big discharge capacity to and when beginning operating in the braking situation from little discharge capacity when variable displacement pump-motor 8, also oil-filled to accumulator 6, realized recovery to the commutation Brake Energy.When upstroke will finish, variable displacement pump-motor 8 forwarded little discharge capacity to from big discharge capacity, and moment of torsion reduces, and sucker rod 12 also has some kinetic energy, is also carrying out oil pumping process before commutation, thereby power utilization height during commutation.
For making things convenient for rod stroke and jig frequency to regulate, select for use oil hydraulic pump 4 more better for variable displacement pump.Safety valve 5 is not worked when flat, just under unexpected situation, as just moving during above safety pressure when system pressure, thereby guarantees safe and reliable.Speed limited valve 7 also is under unexpected situation, and during as sucker rod 12 fracture, the load of variable displacement pump-motor 8 reduces suddenly, and rotating speed increases too high, and at this moment, speed limited valve 7 cuts off variable displacement pump-motor 8 fuel feeding runners under the differential pressure action of front and back and move, and it is stopped the rotation.The adjusting of stroke can be established position limit switch at the upper and lower point of sucker rod and be realized.
A kind of embodiment as shown in Figure 1, driving mechanism is a retarder 9, its input end links to each other with variable displacement pump-motor 8, output terminal is through cylinder 10, driving belt 11, drives sucker rod 12 to-and-fro motion.When variable displacement pump-motor 8 was operated in the motor operating mode in big discharge capacity, it drove cylinder 10 rotations by retarder 9, and driving belt 11 is reeled on cylinder 10, realizes the upstroke of sucker rod 12; When variable displacement pump-motor 8 during in the float amount, the deadweight of sucker rod 12 acts on driving belt 11, overcome variable displacement pump-motor 8 less moments of torsion by cylinder 10, retarder 9 and make its counterrotating, variable displacement pump-motor 8 is operated in the pump operating mode, oil-filled to accumulator 6, sucker rod 12 descends, and finishes down stroke.
Another embodiment as shown in Figure 2, driving mechanism is made up of oil hydraulic pump-motor 9-1, movable pulley 9-2 and oil hydraulic cylinder 9-3.Oil hydraulic pump-motor 9-1 one end is communicated with fuel tank 1, and the other end is communicated with oil hydraulic cylinder 9-3, and driving belt 11 drives sucker rod 12 to-and-fro motion through movable pulley 9-2, cylinder 10.When variable displacement pump-motor 8 is operated in the motor operating mode in big discharge capacity, drive oil hydraulic pump-motor 9-1 rotation and make it be operated in the pump operating mode, thereby pressure oil output enters oil hydraulic cylinder 9-3, propelling sheave 9-2 moves to left, stretching driving belt 11, the upstroke of realization sucker rod 12; When variable displacement pump-motor 8 during in the float amount, moment of torsion is less, the deadweight of sucker rod 12 acts on oil hydraulic cylinder 9-3 plunger by driving belt 11, and the pressure oil that is produced makes oil hydraulic pump-motor 9-2 counterrotating, make it be operated in the motor operating mode, thereby also drive 8 counterrotatings of variable displacement pump-motor, and make it be operated in the pump operating mode, the pressure oil of output charges into accumulator 6, sucker rod 12 descends, and finishes down stroke.
The utility model is compared with background technology, and the useful effect that has is: it not only have compact conformation, in light weight, realize long stroke, low jig frequency and heavy load easily; And the complete machine height is low, and volume is little, and power consumption is few, and cost is low and have safety protection function, uses in the time of can being widely used in the deep-well, heavy oil wells in oil field and inclined shaft exploitation.
Claims (3)
1, a kind of Power Recovery type hydraulic pumping unit, it comprises fuel tank [1], oil purifier [2], prime mover [3], oil hydraulic pump [4], safety valve [5], accumulator [6], driving mechanism, cylinder [10], driving belt [11], sucker rod [12], feature of the present utility model is: also comprise variable displacement pump-motor [8] that an end is communicated with oil hydraulic pump [4], the other end is communicated with fuel tank [1], the output terminal of variable displacement pump-motor drives sucker rod [12] to-and-fro motion through driving mechanism, cylinder [10], driving belt [11].
2, hydraulic pumping unit according to claim 1 is characterized in that: at oil hydraulic pump ［ 4 ］ and variable displacement pump-motor ［ 8 ］ speed limited valve ［ 7 ］ is arranged indirectly.
3, hydraulic pumping unit according to claim 1 and 2, it is characterized in that: driving mechanism can be that a retarder ［ 9 ］ or an end are communicated with fuel tank ［ 1 ］, oil hydraulic pump-motor ［ 9-1 ］ that the other end is communicated with oil hydraulic cylinder ［ 9-3 ］, driving belt ［ 11 ］ drives sucker rod ［ 12 ］ to-and-fro motion through movable pulley ［ 9-2 ］, roller ［ 10 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202553 CN2189218Y (en) | 1994-01-27 | 1994-01-27 | Hydraulic oil pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202553 CN2189218Y (en) | 1994-01-27 | 1994-01-27 | Hydraulic oil pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2189218Y true CN2189218Y (en) | 1995-02-08 |
Family
ID=33822286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94202553 Expired - Fee Related CN2189218Y (en) | 1994-01-27 | 1994-01-27 | Hydraulic oil pumping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2189218Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806877A (en) * | 2012-11-15 | 2014-05-21 | 中国石油化工股份有限公司 | Low air-balancing ultra-long stroke oil pumping device |
| CN107420072A (en) * | 2017-09-21 | 2017-12-01 | 李振河 | A kind of double motor driving hydraulic pumping unit based on Hydrostatic drive technology |
-
1994
- 1994-01-27 CN CN 94202553 patent/CN2189218Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806877A (en) * | 2012-11-15 | 2014-05-21 | 中国石油化工股份有限公司 | Low air-balancing ultra-long stroke oil pumping device |
| CN107420072A (en) * | 2017-09-21 | 2017-12-01 | 李振河 | A kind of double motor driving hydraulic pumping unit based on Hydrostatic drive technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |