CN2165259Y - Energy-saving beam-free oil pumping unit - Google Patents
Energy-saving beam-free oil pumping unit Download PDFInfo
- Publication number
- CN2165259Y CN2165259Y CN 93215432 CN93215432U CN2165259Y CN 2165259 Y CN2165259 Y CN 2165259Y CN 93215432 CN93215432 CN 93215432 CN 93215432 U CN93215432 U CN 93215432U CN 2165259 Y CN2165259 Y CN 2165259Y
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- China
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- pumping unit
- crown sheave
- wheel
- energy
- oil pumping
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Abstract
The utility model relates to an energy saving beam-free oil pumping unit which is composed of an oil pumping unit frame, a power device, a retarding mechanism, a reverse mechanism, a balancing device, a crown sheave, a flexible driving member and a cable, wherein, the crown sheave composed of a front wheel and a back wheel is arranged on the upper end of the oil pumping unit frame, the outline size of the front wheel is larger than that of the back wheel, the front wheel is connected with the cable, and the back wheel is connected with the reverse mechanism by the flexible driving member. The utility model has a compact structure, the total weight of installation is reduced by 15%, the upstroke time of the suspension center is longer than the downstroke time, and the power performance is improved.
Description
The utility model relates to a kind of energy-conservation non-beam beam-pumping unit, belongs to a kind of oil well oil-pumping equipment of oil field.
The pumping unit of oil field extensive use divides by the character of its pump, can be divided into vane type oil pump and plunger pump and hydraulic piston pumps such as electric submersible pump, its ground installation is also different, the pumping unit of widespread usage is a beam pumping unit now, it is mainly by support, frame, power plant, reducing gear, changement, Equilibrator, walking beam, cable wire is formed, power plant wherein are generally motor, and reducing gear is generally gear reducer, and changement is by crank, connecting rod is formed, because the general structure that adopts two cranks in the output of retarder two sides symmetry, so connecting rod also is two, two connecting rods connect into " Jiong " shape by a crossbeam, and balanced controls wherein are generally an equilibrium block, the conventional type beam pumping unit is simple in structure, use reliably, easy to maintenance, but the subject matter that exists is to consume energy greatly, volume is big, and power performance is bad; The disclosed incorgruous crank-balanced pumping unit of Chinese patent CN-87105369 has kept basic structure and all advantages of conventional type pumping unit, and than conventional type oil pump energy-saving 10～15%, but its speed reducer torque ripple is bigger, and have negative torque; Of the prior art and put formula air-balance beam pumping unit and removed equilibrium block, installed a balance gas bag additional, utilize the variation of gas bag internal air pressure to come the fluctuating load of balanced oil extractor, this oil pumping unit reduction gearbox torque ripple is little, eliminated negative torque, than the conventional type oil pump energy-saving more than 20%, but its structure is comparatively complicated, the cost of production height, inconvenient maintenance.The common drawback of all beam pumping units is that volume and weight is all bigger, the manufacture cost height.
Chinese patent CN-2057209 discloses a kind of bull wheel long stroke pumping unit of stroke length increasing, it drives crown sheave according to gear engagement and rotates, its crown sheave is the circle wheel of an equal diameter, the speed reducer torque ripple of this pumping unit is big, power performance is bad, and when workover eration, crown sheave can not accomplish to get out of the way well head.
The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of speed reducer torque ripple little, no negative torque, and energy-saving effect is equivalent to the front-located mode air-balanced pumping unit, and volume is little, and is in light weight, low cost of manufacture, use reliably novel energy-conserving non-beam beam-pumping unit easy to maintenance.
Energy-conservation non-beam beam-pumping unit of the present utility model is by oil pumping frame, power plant, reducing gear, changement, Equilibrator, crown sheave, flexible drive parts, cable wire is formed, and crown sheave is positioned on oil pumping frame upper end, it is characterized in that: crown sheave is combined by front-wheel and trailing wheel, the overall size of front-wheel connects cable wire greater than the overall size of trailing wheel on the front-wheel, trailing wheel links to each other with changement by flexible drive parts.
Energy-conservation non-beam beam-pumping unit of the present utility model, simple in structure, compact, reasonable, power performance improves greatly, and energy-saving effect is remarkable, and easy to use.
For introducing energy-conservation non-beam beam-pumping unit of the present utility model in detail, be elaborated below in conjunction with accompanying drawing:
Fig. 1 is the schematic representation of energy-conservation non-beam beam-pumping unit of the present utility model;
Fig. 2 is during for workover eration, and the relative fixed position view of crown sheave and oil pumping frame has also been represented the structure of another kind of crown sheave simultaneously.
Referring to Fig. 1, energy-conservation non-beam beam-pumping unit of the present utility model is by oil pumping frame 1, power plant 2, reducing gear 3, changement 4, Equilibrator 5, crown sheave 6, flexible drive parts 8, cable wire 7 is formed, crown sheave 6 is positioned on oil pumping frame 1 upper end, and it is characterized in that: crown sheave 6 is combined by front-wheel 61 and trailing wheel 62, and the overall size of front-wheel 61 is greater than the overall size of trailing wheel 62, connect cable wire 7 on the front-wheel 61, trailing wheel 62 links to each other with changement 4 by flexible drive parts 8.
Identical with conventional pumping unit of the prior art, power plant wherein are generally motor, reducing gear is generally gear reducer, changement then is made up of crank, connecting rod, because the general structure that adopts two cranks in the output of retarder two sides symmetry, so connecting rod also is two, two connecting rods connect into " Jiong " shape by a crossbeam, and balanced controls wherein are generally an equilibrium block.
Referring to attached Fig. 1 and 2, crown sheave 6 of the present utility model is made up of front-wheel 61 and trailing wheel 62, the circumferential profile of front-wheel 61 is first-class radius arc with respect to overhead traveling crane wheel shaft 63, assurance pumping unit suspension point is aimed at well head all the time, and trailing wheel 62 profile phases are a reducing curve for overhead traveling crane wheel shaft 63, when this reducing curve had guaranteed that the load of pumping unit upstroke suspension point is big, the pulling force of flexible drive parts was bigger to the arm of force of crown sheave rotating shaft; And when the load of pumping unit upstroke suspension point hour, the pulling force of flexible drive parts is also little to the arm of force of crown sheave rotating shaft, thereby improve the characteristic of suspending point loading torque curve that produces on the retarder crank in work cycle of the upper and lower stroke of suspension point, after the crank balance device balance of this torque curve through producing sinusoidal counter balance torque curve, make the crankshaft net torque curve reach best counterbalance effect, the fluctuation of crankshaft net torque curve is little, has eliminated negative torque.And therefore can realize the asymmetric circulation that the suspension point up-down stroke time is not waited, improve the power performance of pumping unit, thereby reached energy-conservation purpose.Since the trailing wheel profile with respect to the mean radius of crown sheave rotating shaft less than the front-wheel radius, so crown sheave has certain Cheng Zuoyong that increases again, and during well workover, after only need laying down suspending point loading the trailing wheel small diameter portion is gone to the pumping unit forefront, so that crown sheave gets out of the way well head, can find out that on scheming a positioning hole 64 is arranged on the trailing wheel 62 of crown sheave 6, in this case, the pin-and-hole on the positioning hole 64 aligning frames 1 gets final product.
The corner of crown sheave should be less than 180 °, be generally 90 °～140 °, the argument of the front and rear wheel of this crown sheave 100 °～more than 150 °, wherein the circumferential profile of front-wheel is a circular arc, and the external frame of trailing wheel is a reducing curve that seamlessly transits, and can know from Fig. 1 and 2 and find out its structure.
Pumping unit of the present utility model can adopt incorgruous crank balance scheme, according to different pumping unit sizes and crown sheave trailing wheel profilogram, and desirable 0 °～20 ° of its equilibrium phase parallactic angle τ.
Beam pumping unit in conjunction with widespread usage in the prior art, simply introduce the working procedure of no beam pumping unit of the present utility model below: the power of motor output drives the crank rotation after belt transmission and speed reducer deceleration, crank, connecting rod, crossbeam are connected to the trailing wheel of crown sheave by flexible drive parts, the swing of drive crown sheave, the front-wheel of crown sheave drives rope hanger by cable wire and pumps, thereby finishes the purpose of oil pumping.
In sum, oil pumper of the present utility model has the following advantages:
1, because crown sheave trailing wheel profile has adopted the reducing curve, have crank angle between two limit positions, make the suspension point upstroke time be longer than the down stroke time, improved its power performance, maximum is turned round The square factor descends more than 20%;
2, the reduction box output torque is little, and it is little to fluctuate, and has eliminated negative torque, and the crank axle peak torque descends more than 30%;
3, have obvious energy-saving effect, under identical operating mode, can reach 30% than conventional type oil pump energy-saving;
4, adopt the structure of crown sheave, compare with the conventional type pumping unit of same model, the installation gross weight reduces more than 15%, and manufacture cost also decreases.
Claims (6)
1, a kind of energy-conservation non-beam beam-pumping unit is by oil pumping frame, power plant, reducing gear, changement, Equilibrator, crown sheave, flexible drive parts, cable wire is formed, and crown sheave is positioned on oil pumping frame upper end, it is characterized in that: crown sheave is combined by front-wheel and trailing wheel, the overall size of front-wheel connects cable wire greater than the overall size of trailing wheel on the front-wheel, trailing wheel links to each other with changement by flexible drive parts.
2, energy-conservation non-beam beam-pumping unit according to claim 1, the front-wheel profile that it is characterized in that above-mentioned crown sheave is first-class radius arc.
3, energy-conservation non-beam beam-pumping unit according to claim 1, the trailing wheel profile that it is characterized in that above-mentioned crown sheave are a reducing curve.
4,, it is characterized in that the corner of above-mentioned crown sheave is less than 180 ° according to claim 1 or 2 or 3 described energy-conservation non-beam beam-pumping units.
5, according to claim 1 or 2 or 3 described energy-conservation non-beam beam-pumping units, it is characterized in that having positioning hole on the trailing wheel of above-mentioned crown sheave, have corresponding pin-and-hole on the oil pumping frame.
6, energy-conservation non-beam beam-pumping unit according to claim 4, the corner that it is characterized in that above-mentioned crown sheave are 90 °～140 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215432 CN2165259Y (en) | 1993-06-11 | 1993-06-11 | Energy-saving beam-free oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215432 CN2165259Y (en) | 1993-06-11 | 1993-06-11 | Energy-saving beam-free oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165259Y true CN2165259Y (en) | 1994-05-18 |
Family
ID=33795931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93215432 Expired - Fee Related CN2165259Y (en) | 1993-06-11 | 1993-06-11 | Energy-saving beam-free oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165259Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747986A (en) * | 2012-06-20 | 2012-10-24 | 西安石油大学 | Bended end column inertialess load oil pumping machine |
-
1993
- 1993-06-11 CN CN 93215432 patent/CN2165259Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747986A (en) * | 2012-06-20 | 2012-10-24 | 西安石油大学 | Bended end column inertialess load oil pumping machine |
| CN102747986B (en) * | 2012-06-20 | 2014-10-08 | 西安石油大学 | Bended end column inertialess load oil pumping machine |
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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 |