CN203022699U - Energy-saving hydraulic pumping unit - Google Patents
Energy-saving hydraulic pumping unit Download PDFInfo
- Publication number
- CN203022699U CN203022699U CN 201220713554 CN201220713554U CN203022699U CN 203022699 U CN203022699 U CN 203022699U CN 201220713554 CN201220713554 CN 201220713554 CN 201220713554 U CN201220713554 U CN 201220713554U CN 203022699 U CN203022699 U CN 203022699U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- energy
- accumulator
- pumping unit
- motor pump
- 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
Links
Images
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
An energy-saving hydraulic pumping unit comprises a motor pump, a hydraulic oil cylinder and an energy accumulator, wherein the motor pump is connected with a rod-free cavity at the top end of the hydraulic oil cylinder through a pipeline, a rod cavity at the lower part of a hydraulic oil cylinder body is connected with the energy accumulator in a sealing way through a pipeline, the pipeline for joining the motor pump with the rod-free cavity at the top end of the hydraulic oil cylinder is provided with a reversing electromagnetic valve, the reversing electromagnetic valve is connected with an oil tank through a pipeline, a piston rod in the hydraulic oil cylinder is connected with a well rod, the energy accumulator is a hollow sealed tank body, pressure gas is filled in the tank body or the energy accumulator consists of a transferring oil cylinder and pressure gas bottles, which are sequentially connected with one another in a sealing way through a pipeline, and a piston is arranged in the transferring oil cylinder to divide the oil cylinder into two sealed cavities.
Description
Technical field
The utility model relates to oil-pumping equipment in oil field and makes the field, relates in particular to a kind of hydraulic pumping unit.
Background technology
What oil field, the contemporary world various countries overwhelming majority was used is that bar type oil pumper is arranged, and its sucker rod pumping machine moves reciprocatingly down-hole oil pump plunger and crude oil is evacuated to ground by driving sucker rod.Due to the normally thousands of rice of oil well depth. sucker rod also also different with different its weight of oil well depth.According to investigating with each oil field, Southeast Asia at home at present. all in 5-15 ton scope, what the oil field routine was used now is beam type machinery oil pumper (being commonly called as the machine of kowtowing) to the overwhelming majority.
For the mining depth oil well, heavy oil wells, must use the oil pumper of large load, although so just need the oil pumper of the large load of development long stroke. beam pumping unit has simple in structure, being convenient to the advantages such as maintenance, is currently to make traditionally oil pumper with the most use, but wish design long stroke, large load but has many problems, 1. approximately 34 tons of the complete machine weight of the too huge as 12 type machines of mechanism size; 2. balance is poor, and its walking beam length is over 9 meters. and the weight of balance portion also surpasses 10 tons of .3 because size strengthens, and the force-bearing situation of complete machine is variation also. and these all bring difficulty for installation and transportation and well layout.This shows, the conventional machine of kowtowing is difficult to satisfy long stroke, the requirement of low jig frequency and large load.
in order to overcome the deficiency of existing oil pumper, China Patent Publication No. CN202181885U, a kind of hydraulic pumping unit is disclosed, comprise linear quadratic control technical unit (1), control and then drive by linear quadratic control technical unit (1) oil cylinder (2) that sucker rod moves back and forth, the displacement transducer (6) that is used for the stroke of setting cylinder piston rod, the slip electric motor (3) that is in transmission connection with linear quadratic control technical unit (1), the potential energy accumulator (4) that is in transmission connection with slip electric motor and based on the forward and reverse linear quadratic control technical unit controller (5) of signal controlling linear quadratic control technical unit motion of displacement transducer, the characteristics of this technical scheme are to utilize the specific hydraulic fluid pressure motor pump potential energy descending with the load that coordinates to come the recovery well bar of flywheel mechanism, it is complicated but its mechanical part structure is large, cost of manufacture is relatively high, the easy produce power loss of frame for movement, therefore energy-saving effect is still not obvious.
Chinese patent is disclosed as CN 201588602 U, a kind of energy-conserving hydraulic pumping unit is disclosed, partly formed by hydraulic pump, overflow valve, one way valve, accumulator, electro-hydraulic reversing valve and combined oil cylinder etc., combined oil cylinder is formed by a piston rod and a Combined Plunger-type Cylinder, the plunger of plunger case doubles as the cylinder barrel of piston rod, the piston rod of piston rod is fixed on the bottom of plunger case, makes combined oil cylinder form three oil pockets.Can reclaim the gravitional force that sucker rod discharges when descending, re-use when sucker rod is up, have energy-saving effect.Combined oil cylinder not only can be realized work functions but also can realize equilibrium function, therefore have the advantages such as compact conformation, floor space are little, the combined oil cylinder that changes technical scheme is by pulley and wire rope when upwards moving, and load is 50KN as oil well, and oil cylinder need to could be realized action greater than 100KN.Actual can not reaching saved purpose.The variation that plunger cavity (71) in combined oil cylinder (7) does not have volume and pressure can not realize any action.The manufacturing process cost of combined oil cylinder is also very high.
although above-mentioned two kinds of technical schemes have proposed to utilize hydraulic pressure to realize the principle of energy-conserving oil pumping, but its energy-saving effect is unsatisfactory, and its accumulator does not propose to improve, can not reach the accumulation of energy effect of expectation, present accumulator on the market generally mostly is piston type or bladder, wherein the bag type accumulator structure is equipped with the air bag of pressed gas for sealing is set in energy storage tank, reach the purpose of energy storage by pump into hydraulic oil compression air bag in energy storage tank, if but be used on oil-field oil pumper, the work of oil pumper is the whole day work of not stopping transport in 24 hours, come and go number of times frequent, leather bag is easy to aging and damages, the life-span of rubbery human body is difficult to reach the requirement of practical application, have much room for improvement.
Summary of the invention
The utility model is for above-mentioned deficiency, provide a kind of energy-conservation, pumping efficiency is high, effectively prevent energy loss, make simple lower-cost energy-saving type hydraulic pumping unit.
The utility model is for solving the problems of the technologies described above, provide following technical scheme: a kind of energy-saving type hydraulic pumping unit, it is characterized in that comprising electric-motor pump, hydraulic jack, accumulator, described electric-motor pump pipeline connecting fluid compressing cylinder top rodless cavity, described cylinder body of hydraulic oil cylinder bottom rod chamber is provided with line seal and connects accumulator, be provided with reversing solenoid valve on the pipeline of described electric-motor pump connecting fluid compressing cylinder top rodless cavity, hydraulic jack inner piston rod connecting well bar, described accumulator is the hollow seal tank body, is filled with pressed gas in tank body.
Key problem in technology of the present utility model is to be set to the hollow seal tank body by accumulator, be filled with a certain amount of pressed gas in tank body, how much determining by oil cylinder load and the size that needs energy storage of its pressed gas, directly contact by gas-liquid in tank body, pump into hydraulic oil, in compressed tanks, gas reaches the purpose of energy storage.
As of the present utility model preferred, described pressed gas is nitrogen.Nitrogen is inert gas, and is in stable condition, is not easy oxidation, can store for a long time, and convenient sources, in air, 80% is nitrogen, cheap, nontoxic.
As further improvement of the utility model, separately be provided with a pipeline on the sealing pipeline of described cylinder body of hydraulic oil cylinder bottom rod chamber connection accumulator and connect a small machine pump.Because existing Sealing Technology is not enough to prevent sealing fully in the valve body of gas on pipeline, easily shining into gas reveals in valve body, utilize the small machine pump to pump into a certain proportion of hydraulic oil in accumulator by this kind setting, prevent that gas from flowing out tank body and entering pipeline by the valve body leakage of escaping, simultaneously can pump into hydraulic oil in the rod chamber of hydraulic jack, make the mass loading of sucker rod and Accumulator arrangements internal pressure keep balance.
As further improvement of the utility model, separately be provided with a pipeline on described electromagnetic valve, be disposed with flow speed control valve, the cooling auxiliary of oil filter on described pipeline.The flow speed control valve capable of regulating oil cylinder speed of service, but cleannes and the operating temperature of the cooling auxiliary maintenance medium of oil filter pressing system.
As further improvement of the utility model, be provided with one way valve on the connecting line of described electric-motor pump and reversing solenoid valve.Can guarantee pressure in system pipeline.
As further improvement of the utility model, separately establish a pipeline on the connecting line of described one way valve and electric-motor pump, be provided with overflow valve on described pipeline.Adjust hydraulic work system pressure.
As further improvement of the utility model, be provided with one way valve on the connecting line of described accumulator and small machine pump.Can guarantee pressure in system pipeline.
As further improvement of the utility model, described accumulator is provided with the pipeline connection safety valve.The energy-storage system overvoltage protection is provided.
for solving technical problem described in the utility model, the utility model provides another kind of technical scheme: a kind of energy-saving type hydraulic pumping unit, it is characterized in that comprising electric-motor pump, hydraulic jack, accumulator, described electric-motor pump pipeline connecting fluid compressing cylinder top rodless cavity, described cylinder body of hydraulic oil cylinder bottom rod chamber is provided with line seal and connects accumulator, be provided with reversing solenoid valve on the pipeline of described electric-motor pump connecting fluid compressing cylinder top rodless cavity, hydraulic jack inner piston rod connecting well bar, described accumulator is by relay cylinder, pressure gas bottle seal for pipe joints successively connects to form, be provided with piston in described relay cylinder oil cylinder is separated into two seal chambers.
The technical essential of this technical scheme is: reveal for preventing the pressed gas in accumulator, accumulator is set to the combination of relay cylinder, pressure gas bottle, effectively prevent gas leakage, move to reach the purpose of Compressed Gas by the piston in relay cylinder, thereby reach the effect of high-efficiency energy-storage.
As preferably, described pressed gas is nitrogen.
For better explaining the technical solution of the utility model, below introduce in detail operating principle of the present utility model: under normal operation, hydraulic jack descending stroke: electric-motor pump loop, the reversing solenoid valve input signal, hydraulic jack is descending under the charge oil pressure in main pump loop, due to the back pressure effect of accumulator, hydraulic jack can steadily descend, hydraulic pressure
The fluid of cylinder rod chamber is charged into accumulator and stores, and the gravitional force of the cylinder of namely pumping stores in the middle of accumulator with the form of hydraulic energy; Hydraulic cylinder rising backhaul: when the hydraulic cylinder down stroke to bottom the time, the reversing solenoid valve signal switches, while electromagnetic relief valve input signal, this moment, the fluid of electric-motor pump output was directly got back to fuel tank by reversing solenoid valve, except the pressure drop of reversing solenoid valve, almost there is no the pressure loss, electric-motor pump is in unloading condition, reaches energy-saving effect.
The beneficial effects of the utility model: the utility model is by accumulator energy storage release principle, and the improvement accumulator structure, effectively prevents the energy loss in oil pumping process, has greatly improved pumping efficiency, has simplified frame for movement, has reduced running cost.
Description of drawings
Fig. 1 is system construction drawing of the present utility model.
Fig. 2 is the further system construction drawing of Fig. 1.
Fig. 3 is the structural representation of the utility model accumulator.
Fig. 4 is the structural representation of the another kind of accumulator of the utility model.
The specific embodiment
embodiment 1: a kind of energy-saving type hydraulic pumping unit, comprise electric-motor pump 001, hydraulic jack 002, accumulator 003, described electric-motor pump 001 pipeline 006 connecting fluid compressing cylinder 002 top rodless cavity 021, described hydraulic jack 002 inferior part of the cylinder block rod chamber 022 is provided with pipeline 006, accumulator 003 is tightly connected, be provided with reversing solenoid valve 004 on the pipeline 006 of described electric-motor pump 001 connecting fluid compressing cylinder 002 top rodless cavity 021, reversing solenoid valve 004 pipeline connects fuel tank 005, hydraulic jack 002 inner piston rod connecting well bar, described accumulator 003 is the hollow seal tank body, be filled with pressed gas 013 in tank body, described pressed gas 013 is nitrogen, separately be provided with a pipeline 061 on the sealing pipeline of described hydraulic jack 002 inferior part of the cylinder block rod chamber 022 connection accumulator 003 and connect a small machine pump 011, separately be provided with a pipeline 062 on described reversing solenoid valve 004, be disposed with flow speed control valve 007 on described pipeline 062, the cooling auxiliary 008 of oil filter, be provided with one way valve 009 on the connecting line 006 of described electric-motor pump 001 and reversing solenoid valve 004, separately establish a pipeline 063 on the connecting line 006 of described one way valve 009 and electric-motor pump 001, be provided with overflow valve 010 on described pipeline 063, be provided with one way valve 009 on the connecting line 061 of described accumulator 003 and small machine pump 011, described accumulator 003 is provided with pipeline connection safety valve 012.
Embodiment 2: with reference to embodiment 1: described accumulator 003 is connected to form by relay cylinder 031, pressure gas bottle 032 seal for pipe joints successively, be provided with piston 311 in described relay cylinder 031 oil cylinder 031 is separated into two seal chambers, described pressed gas 013 is nitrogen.
Claims (10)
1. energy-saving type hydraulic pumping unit, it is characterized in that comprising electric-motor pump, hydraulic jack, accumulator, described electric-motor pump pipeline connecting fluid compressing cylinder top rodless cavity, described cylinder body of hydraulic oil cylinder bottom rod chamber is provided with line seal and connects accumulator, be provided with reversing solenoid valve on the pipeline of described electric-motor pump connecting fluid compressing cylinder top rodless cavity, the reversing solenoid valve pipeline connects fuel tank, hydraulic jack inner piston rod connecting well bar, described accumulator is the hollow seal tank body, is filled with pressed gas in tank body.
2. a kind of energy-saving type hydraulic pumping unit according to claim 1, is characterized in that described pressed gas is nitrogen.
3. a kind of energy-saving type hydraulic pumping unit according to claim 1 and 2 is characterized in that described cylinder body of hydraulic oil cylinder bottom rod chamber connects separately to be provided with a pipeline on the sealing pipeline of accumulator and to connect a small machine pump.
4. a kind of energy-saving type hydraulic pumping unit according to claim 1 and 2, is characterized in that separately being provided with a pipeline on described electromagnetic valve, is disposed with flow speed control valve, the cooling auxiliary of oil filter on described pipeline.
5. a kind of energy-saving type hydraulic pumping unit according to claim 1 and 2 is characterized in that being provided with one way valve on the connecting line of described electric-motor pump and reversing solenoid valve.
6. a kind of energy-saving type hydraulic pumping unit according to claim 5 is characterized in that separately establishing a pipeline on the connecting line of described one way valve and electric-motor pump, is provided with overflow valve on described pipeline.
7. a kind of energy-saving type hydraulic pumping unit according to claim 3 is characterized in that being provided with one way valve on the connecting line of described accumulator and small machine pump.
8. a kind of energy-saving type hydraulic pumping unit according to claim 5, is characterized in that described accumulator is provided with the pipeline connection safety valve.
9. energy-saving type hydraulic pumping unit, it is characterized in that comprising electric-motor pump, hydraulic jack, accumulator, described electric-motor pump pipeline connecting fluid compressing cylinder top rodless cavity, described cylinder body of hydraulic oil cylinder bottom rod chamber is provided with line seal and connects accumulator, be provided with reversing solenoid valve on the pipeline of described electric-motor pump connecting fluid compressing cylinder top rodless cavity, hydraulic jack inner piston rod connecting well bar, described accumulator is connected to form by relay cylinder, pressure gas bottle seal for pipe joints successively, is provided with piston in described relay cylinder oil cylinder is separated into two seal chambers.
10. a kind of energy-saving type hydraulic pumping unit according to claim 9, is characterized in that described pressed gas is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713554 CN203022699U (en) | 2012-12-21 | 2012-12-21 | Energy-saving hydraulic pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713554 CN203022699U (en) | 2012-12-21 | 2012-12-21 | Energy-saving hydraulic pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022699U true CN203022699U (en) | 2013-06-26 |
Family
ID=48646690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220713554 Expired - Fee Related CN203022699U (en) | 2012-12-21 | 2012-12-21 | Energy-saving hydraulic pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061716A (en) * | 2012-12-21 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Energy-saving hydraulic pumping unit |
-
2012
- 2012-12-21 CN CN 201220713554 patent/CN203022699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061716A (en) * | 2012-12-21 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Energy-saving hydraulic pumping unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204493095U (en) | Hydraulic bidirectional effect pumping installations | |
| CN104612928B (en) | Hydraulic bidirectional effect pumping installations | |
| CN102725135B (en) | Machine press | |
| CN101748730B (en) | Multi-function closed cylinder type hydraulic piling hammer | |
| CN106523334B (en) | Oil field well mechanical oil recovery device | |
| CN104018814A (en) | Double-balanced range-extended hydraulic oil pumping unit | |
| CN101592026A (en) | A kind of novel energy-conserving hydraulic pumping unit | |
| CN206830551U (en) | Pumping unit hydraulic system | |
| CN203022699U (en) | Energy-saving hydraulic pumping unit | |
| CN103061716A (en) | Energy-saving hydraulic pumping unit | |
| CN201162660Y (en) | Hydraulic secondary balancing device of beam pumping unit | |
| CN203702096U (en) | Novel beam-free type hydraulic pumping unit | |
| CN203022704U (en) | Dual-plunger-oil-cylinder-type hydraulic oil pumping machine | |
| CN103075133A (en) | Flow compensation type hydraulic pumping unit | |
| CN212130922U (en) | Hydraulic hammer thrust augmentation device | |
| CN110145500A (en) | A kind of hydraulic device of pumping unit | |
| CN107725803A (en) | Non-return valve assembly and pumping filling pipeline system | |
| CN103061717B (en) | A kind of four cylinder type hydraulic oil pumps | |
| CN203097846U (en) | Power unit of hydraulic pumping unit and hydraulic pumping unit provided with same | |
| CN111173785A (en) | Hydraulic hammer stress application device and control method | |
| CN106761578B (en) | Adjustable hydraulic oil pumping unit device | |
| CN103061718A (en) | Dual-plunger cylinder type hydraulic pumping unit | |
| CN207080345U (en) | A kind of packing formula energy saving oil extraction pump | |
| CN110593824A (en) | Non-beam type balance energy-saving oil pumping machine | |
| CN203892170U (en) | Energy-storage type linear motor capsule pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20141221 |
|
| EXPY | Termination of patent right or utility model |