CN113153226A - Stroke adjusting device of single-machine multi-well pumping unit - Google Patents
Stroke adjusting device of single-machine multi-well pumping unit Download PDFInfo
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- CN113153226A CN113153226A CN202110354237.XA CN202110354237A CN113153226A CN 113153226 A CN113153226 A CN 113153226A CN 202110354237 A CN202110354237 A CN 202110354237A CN 113153226 A CN113153226 A CN 113153226A
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- 238000005086 pumping Methods 0.000 title claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 50
- 239000003129 oil well Substances 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 230000005484 gravity Effects 0.000 description 8
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/14—Counterbalancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a stroke adjusting device of a single-machine multi-well pumping unit, which relates to oil exploitation equipment and comprises: a support portion; the power flexible rope input part is fixed on the supporting part and is connected with a power flexible rope led out from a main machine of the single-machine multi-well oil pumping machine through a pulley device; and the stroke adjusting part is fixed on the supporting part, is connected with the power flexible rope, receives the power flexible rope through the coaxial reducing roller mechanism or the flexible rope length adjusting assembly and adjusts the effective stroke of the power output side, wherein the power provided by the power flexible rope is input to the underground oil pumping assembly after passing through the stroke adjusting part. The stroke adjusting device realizes the stroke adjusting function of the multi-well machine system, realizes the individual adjustment of a single well in the multi-well machine system, and plays an important role in the flexible adjustment and the stable operation of the multi-well machine system.
Description
Technical Field
The invention relates to oil exploitation equipment, in particular to a stroke adjusting device of a single-machine multi-well oil pumping unit.
Background
In recent years, the oil price is low, the exploitation benefit of the oil field is worsened year by year, more than 200 thousands of oil pumping wells are used in the existing oil pumping wells of the oil fields at home and abroad, most of the oil pumping wells are oil pumping by oil pumping units, and the oil pumping units have the defects of large energy consumption, large volume, large weight and low oil pumping efficiency due to the fact that the oil pumping units are developed for nearly one hundred years. With the technical progress of pumping multiple wells by one machine, the main machine of the pumping unit is driven by single power to pump multiple wells in a reciprocating manner, so that the future development direction is formed. In the process of implementing the invention, the inventor finds that: the single-well multi-well pumping unit drives a plurality of groups of power flexible ropes by a single speed reducer system to respectively drive the pumping pumps in the multi-port pumping wells to work so as to transmit power, the oil well pumps are uniform in pace and cannot realize individual adjustment of the single well, and the well mouth power conversion device which is uniformly and synchronously adjusted cannot effectively exert the superior characteristics of the single-machine multi-well pumping unit due to different working condition data of each well mouth. Therefore, how to design a special wellhead stroke adjusting device for a single-well multi-well pumping unit enables the multi-well pumping unit to better exert the superior characteristics to become a technical problem to be solved.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art or the related technology, and provides a stroke adjusting device of a single-machine multi-well pumping unit, which realizes individual adjustment of a single well in a multi-well pumping unit system and is beneficial to better exerting the superior characteristics of the multi-well pumping unit.
The invention is realized by the following technical scheme: a stroke adjusting device of a single-machine multi-well pumping unit comprises: a support portion; the power flexible rope input part is fixed on the supporting part and is connected with a power flexible rope led out from a main machine of the single-machine multi-well oil pumping machine through a pulley device; and the stroke adjusting part is fixed on the supporting part, is connected with the power flexible rope, receives the power flexible rope through the coaxial reducing roller mechanism or the flexible rope length adjusting assembly and adjusts the effective stroke of the power output side, wherein the power provided by the power flexible rope is input to the underground oil pumping assembly after passing through the stroke adjusting part.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the power flexible rope input part and the stroke adjusting part are integrated in the same coaxial reducing roller mechanism, and the stroke adjusting part further comprises a well head fixed pulley, wherein the power flexible rope is connected with the coaxial reducing roller to serve as a first power transmission rope, a second power transmission rope is led out from the coaxial reducing roller, and the second power transmission rope is connected with the underground oil pumping assembly through the well head fixed pulley.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the power flexible rope input part comprises a stroke adjusting movable pulley and a movable pulley track, the stroke adjusting part comprises a stroke adjusting upright post, a stroke adjusting flexible rope and a well head fixed pulley, a plurality of stroke adjusting interfaces are arranged on the stroke adjusting upright post, the stroke adjusting movable pulley is arranged in the movable pulley track, the power flexible rope is fixedly connected with a wheel shaft of the stroke adjusting movable pulley, one end of the stroke adjusting flexible rope is connected with the stroke adjusting interfaces, and the other end of the stroke adjusting flexible rope is connected to the underground pumping unit after passing through the stroke adjusting movable pulley and the well head fixed pulley.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the power flexible rope input part comprises a power input fixed pulley, and the stroke adjusting part comprises a stroke adjusting pulley, a balance block lifting rope, a balance block fixed pulley and a wellhead fixed pulley, wherein the balance block, the balance block lifting rope and the balance block fixed pulley form a reciprocating mechanism, the balance block lifting rope is connected with the underground oil pumping assembly through the wellhead fixed pulley, the stroke adjusting pulley is fixed on the balance block, the power flexible rope is connected with the underground oil pumping assembly through the power input fixed pulley, the balance block fixed pulley and the wellhead fixed pulley in sequence, or the power flexible rope is connected with the underground oil pumping assembly through the power input fixed pulley, the stroke adjusting pulley, the balance block fixed pulley and the wellhead fixed pulley in sequence.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the stroke adjusting device further comprises: the balance part is arranged on the supporting part and at least comprises a reciprocating mechanism consisting of a balance block and a fixed pulley, and the reciprocating mechanism is connected with the underground oil pumping assembly.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the stroke adjusting device further comprises: and the rope hanger is arranged on the underground oil pumping assembly and is used for bearing the power input provided by the power flexible rope and the balance block.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the downhole pumping assembly specifically comprises: sucker rod and leak-proof oil-well pump.
According to the stroke adjusting device of the single-machine multi-well pumping unit provided by the invention, preferably, the single-machine multi-well pumping unit specifically comprises: the power part outputs torque through the rotating shaft; the crank part comprises two crank mechanisms which are respectively and fixedly connected with two end parts of the rotating shaft, and the free end of each crank mechanism is connected with a plurality of power flexible ropes; the power output part comprises a plurality of power flexible rope guide assemblies which are uniformly distributed along the circumference, and the plurality of power flexible rope guide assemblies are fixed on the power output frame; the free end of the crank mechanism is fixedly connected with one end of the power flexible rope, and the other end of the power flexible rope provides power output to the outside through the power flexible rope guide assembly.
The beneficial effects obtained by the invention at least comprise: the effective stroke of the output side of the power flexible rope is adjusted by the coaxial reducing roller device through the stroke adjusting pulley, and the position of the upper dead point of the plunger in the pump cylinder during working is changed, so that the stroke of the pumping unit is adjusted. And the balance box arranged on the support frame is connected with a rope hanger of a well head through a steel wire rope on the balance box, so that the weight of the sucker rod pump is balanced when the multi-well machine system works normally. When the pumping of the oil well is stopped or the oil well is operated, the flexible rope hoisting gravity balance box can be connected to the main power of the power center by bypassing the fixed pulley of the well mouth, and the balance function of the multi-well pumping unit is achieved. The device not only realizes the stroke adjusting function of the multi-well machine system, but also ensures the gravity balance of the pumping unit under various conditions, and plays an important role in the flexible adjustment and stable operation of the multi-well machine system.
Drawings
Fig. 1 shows a schematic configuration of a stroke adjusting device of a stand-alone multi-well pumping unit according to an embodiment of the present invention.
Fig. 2 is a schematic structural view showing a stroke adjusting device of a stand-alone multi-well pumping unit according to still another embodiment of the present invention.
Fig. 3 is a schematic structural view showing a stroke adjusting device of a stand-alone multi-well pumping unit according to still another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example one
As shown in fig. 1, a specific embodiment of the stroke adjusting device of the single-machine multi-well pumping unit disclosed by the invention is as follows: the power transmission rope I102 conducted from the host machine side penetrates through a support frame 103 on a support base 101 and is wound on a small-diameter roller on a coaxial reducing roller 104, a power transmission rope II 105 is wound on a large-diameter roller on the coaxial reducing roller 104, the power transmission rope II 105 is connected with a power transmission fixed pulley 106 on the upper side and is connected with a rope hanger 111 through a wellhead fixed pulley block 107. During normal operation, the first power transmission rope 102 drives the coaxial reducing roller 104 to rotate, the coaxial reducing roller 104 drives the second power transmission rope 105, the second power transmission rope 105 drives the rope hanger 111, and the rope hanger 111 drives the sucker rod to perform oil pumping operation. The stroke of the pumping unit is adjusted by changing the moving stroke of the rope hanger 111 driven by the power transmission rope by winding two power transmission ropes on two sections with different diameters on the coaxial reducing roller 104. A balance box guide rail 110 is arranged on the supporting bracket 103 at the position shown in figure 1, a balance box 109 moves along the track direction of the balance box guide rail 110, a balance rope 108 is arranged on the balance box 109 and is connected with a rope hanger 111 through a wellhead fixed pulley block 107, and the weight of a sucker rod pump 112 during normal operation of the multi-well machine system is balanced by the self weight of the balance box 109.
In the embodiment, the stroke adjusting device mainly comprises a supporting base, a supporting frame, a coaxial reducing roller, a power transmission rope I, a power transmission rope II, a power transmission fixed pulley, a wellhead fixed pulley block, a balance rope, a balance box slide rail, a rope hanger, an oil well pump and the like. The first power transmission rope transmitted by the host machine penetrates through the lower side of the device and is wound on the small-diameter section of the coaxial reducing roller, the second power transmission rope is wound on the large-diameter section of the coaxial reducing roller, and the second power transmission rope is connected with a rope hanger of a wellhead through a power transmission movable pulley and a wellhead fixed pulley block on the upper side of the device. The power transmission rope I from the host machine drives the power transmission rope II through the coaxial reducing roller, and the power transmission rope II drives the rope hanger and the sucker rod connected with the rope hanger to perform normal oil pumping work. This scheme, coaxial reducing cylinder is as stroke regulating unit, and the power transmission rope I of following the host computer input twines the little diameter section at coaxial reducing cylinder, and the big diameter section winding power transmission rope two of coaxial reducing cylinder because two power transmission rope winding cylinder diameters are different to change the stroke of the polished rod eye that the power transmission rope drove, realize the regulation to the reciprocal stroke length of beam-pumping unit. The balance box is used as a gravity balance unit, and part of weight of the sucker rod pump is balanced during normal operation by connecting the balance box to the rope hanger.
Example two
As shown in fig. 2, another specific embodiment of the stroke adjusting device of the single-machine multi-well pumping unit disclosed by the invention is as follows: the support bracket 207 is fixed to the support base 210, the power transmission cord 209 conducted from the main machine side is connected to the stroke adjusting movable pulley 206 through the support bracket 207, the stroke adjusting movable pulley 206 is mounted on a movable pulley slide rail 208, and the movable pulley slide rail 208 is mounted between the stroke adjusting column 205 and the support bracket 207 at a position shown in fig. 2. A steel wire rope 204 is connected to a steel wire rope interface on the stroke adjusting upright column 205, one end of the steel wire rope 204 is connected to the steel wire rope interface on the stroke adjusting upright column 205, and the other end is connected to the rope hanger 202 through an overshoot stroke adjusting movable pulley 206 and a power transmission fixed pulley 203. During normal operation, the power transmission rope 209 drives the stroke adjustment movable pulley 206, the stroke adjustment movable pulley 206 drives the steel wire rope 204 wound thereon, and the steel wire rope 204 drives the rope hanger 202 and the sucker rod and the oil pump 201 connected to the rope hanger 202 to perform oil pumping operation. The stroke of the pumping unit is adjusted by connecting the steel wire rope 204 and the stroke adjusting upright column 205 with steel wire rope interfaces at different positions.
In the embodiment, the stroke adjusting device mainly comprises an oil well pump, a rope hanger, a power transmission fixed pulley, a steel wire rope, a stroke adjusting upright post, a stroke adjusting movable pulley, a supporting bracket, a movable pulley slide rail, a power transmission rope, a supporting base and the like. The power transmission rope conducted by the host machine penetrates through the lower side supporting bracket of the device to be connected with the stroke adjusting movable pulley, a steel wire rope is wound on the stroke adjusting movable pulley, one end of the steel wire rope is connected with a steel wire rope connecting port of the stroke adjusting upright post, and the other end of the steel wire rope is connected with the rope hanger through the power transmission fixed pulley. The power transmission rope drives the stroke adjusting movable pulley, the stroke adjusting movable pulley moves along the movable pulley sliding rail and drives the steel wire rope wound on the stroke adjusting movable pulley, and the steel wire rope drives the rope hanger and the sucker rod pump on the rope hanger to perform reciprocating oil pumping work. According to the scheme, the stroke adjusting movable pulley and the stroke adjusting upright post are used as stroke adjusting units, the length of the steel wire rope is unchanged, the steel wire rope connecting ports connected with the stroke adjusting upright post are different, and the length of the steel wire rope driven by the stroke adjusting movable pulley is different, so that the reciprocating stroke length of the pumping unit can be adjusted.
EXAMPLE III
As shown in fig. 3, another specific embodiment of the stroke adjusting device of the single-machine multi-well pumping unit disclosed by the present invention is: the support bracket 304 is fixed on the support base 301, and the power transmission rope 302 conducted from the main machine side passes through the support bracket 304 and sequentially bypasses the power transmission fixed pulley 303, the stroke adjusting pulley 305, the flexible rope conduction fixed pulley block 308, the wellhead fixed pulley block 309 and is connected with the rope hanger 311. The stroke adjusting pulley block 305 is mounted on a balancing box 306, and the balancing box 306 is connected with a rope hanger 311 through a balancing rope 307 connected with the balancing box 306. During normal operation, the power transmission rope 302 drives the rope hanger 311, and the rope hanger 311 drives the sucker rod to pump oil. The stroke of the pumping unit is adjusted by installing a stroke adjusting pulley 305 wound with a power transmission rope 302 at different positions on the balance box. A balance box guide rail 310 is arranged on a support bracket 304 at the position shown in figure 3, a balance box 306 moves along the track direction of the balance box guide rail 310, a balance rope 307 is arranged on the balance box 306 and is connected with a rope hanger 311 through a wellhead fixed pulley block 309, and the weight of a sucker rod pump 312 during normal operation of the multi-well machine system is balanced by the self weight of the balance box 306.
In the embodiment, the stroke adjusting device mainly comprises a supporting base, a power transmission rope, a power transmission fixed pulley, a supporting bracket, a stroke adjusting pulley, a balance box, a balance rope, a flexible rope transmission fixed pulley block, a wellhead fixed pulley block, a balance box guide rail, a rope hanger, an oil well pump and the like. The power transmission rope transmitted by the main machine sequentially bypasses the power transmission fixed pulley, the stroke adjusting pulley, the flexible rope transmission fixed pulley block and the wellhead fixed pulley block from the support bracket to be connected with the rope hanger. The power transmission rope drives the rope hanger and the sucker rod connected with the rope hanger to perform normal oil pumping work. In the scheme, the balance box and the stroke adjusting pulley thereon are simultaneously used as a stroke adjusting unit and a gravity balancing unit. The stroke adjusting pulleys can be arranged at the upper, middle and lower positions of the balancing box, and the stroke adjusting pulleys wound with the power transmission ropes are arranged at the three positions of the balancing box and the power transmission ropes are not wound on the stroke adjusting pulleys to realize the adjustment of four strokes. The balance box is connected with the rope hanger through a balance rope connected with the balance box, and the weight of the sucker rod pump part is balanced by the dead weight of the balance box when the multi-well machine system works normally.
In addition, according to the embodiment, the gravity balance unit can connect the flexible rope hoisting gravity balance box to the main power of the power center by bypassing the wellhead fixed pulley when the oil well stops pumping or operates, so that the balance function of the multi-well oil pumping system is achieved, and the problem of unbalanced stress of the system when part of wells of the multi-well system do not work is solved. The matched oil well pump without leakage has higher yield and lower energy consumption on the basis of high efficiency and the like of the system.
The stroke adjusting device of the single-machine multi-well oil pumping machine adjusts the effective stroke of the output side of the power flexible rope through the stroke adjusting pulley and the coaxial reducing roller device, and changes the position of the upper dead point of a plunger in a pump cylinder during working so as to realize the adjustment of the stroke of the oil pumping machine. And the balance box arranged on the support frame is connected with a rope hanger of a well head through a steel wire rope on the balance box, so that the weight of the sucker rod pump is balanced when the multi-well machine system works normally. When the pumping of the oil well is stopped or the oil well is operated, the flexible rope hoisting gravity balance box can be connected to the main power of the power center by bypassing the fixed pulley of the well mouth, and the balance function of the multi-well pumping unit is achieved. The device not only realizes the stroke adjusting function of the multi-well machine system, but also ensures the gravity balance of the pumping unit under various conditions, and plays an important role in the flexible adjustment and stable operation of the multi-well machine system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A stroke adjusting device of a single-machine multi-well pumping unit is characterized by comprising:
a support portion;
the power flexible rope input part is fixed on the supporting part and is connected with a power flexible rope led out from a main machine of the single-machine multi-well oil pumping machine through a pulley device;
the stroke adjusting part is fixed on the supporting part and connected with the power flexible rope, the power flexible rope is accepted through a coaxial reducing roller mechanism or a flexible rope length adjusting assembly, the effective stroke of the power output side is adjusted, wherein the power provided by the power flexible rope is input to the underground oil pumping assembly after passing through the stroke adjusting part.
2. The stroke adjusting device of a stand-alone multi-well pumping unit according to claim 1, wherein the power flexible rope input part and the stroke adjusting part are integrated in the same coaxial reducing roller mechanism, the stroke adjusting part further comprises a wellhead fixed pulley, wherein the power flexible rope is connected with the coaxial reducing roller to serve as a first power transmission rope, a second power transmission rope is led out from the coaxial reducing roller, and the second power transmission rope is connected with the downhole pumping assembly through the wellhead fixed pulley.
3. The stroke adjusting device of a stand-alone multi-well pumping unit according to claim 1, wherein the power flexible rope input part comprises a stroke adjusting movable pulley and a movable pulley rail, the stroke adjusting part comprises a stroke adjusting upright, a stroke adjusting flexible rope and a wellhead fixed pulley, a plurality of stroke adjusting interfaces are arranged on the stroke adjusting upright, wherein the stroke adjusting movable pulley is arranged in the movable pulley rail, the power flexible rope is fixedly connected with a wheel shaft of the stroke adjusting movable pulley, one end of the stroke adjusting flexible rope is connected with the stroke adjusting interfaces, and the other end of the stroke adjusting flexible rope is connected to the downhole pumping assembly after passing through the stroke adjusting movable pulley and the wellhead fixed pulley.
4. The stroke adjusting device of a stand-alone multi-well pumping unit according to claim 1, the power flexible rope input part comprises a power input fixed pulley, the stroke adjusting part comprises a stroke adjusting pulley, a balance block lifting rope, a balance block fixed pulley and a wellhead fixed pulley, wherein the balance block, the balance block lifting rope and the balance block fixed pulley form a reciprocating mechanism, the balance block lifting rope is connected with the underground oil pumping assembly through the wellhead fixed pulley, the stroke adjusting pulley is fixed on the balance block, the power flexible rope is connected with the underground oil pumping assembly through the power input fixed pulley, the balance block fixed pulley and the wellhead fixed pulley in sequence, or the power flexible rope sequentially passes through the power input fixed pulley, the stroke adjusting pulley, the balance block fixed pulley and the wellhead fixed pulley to be connected with the underground oil pumping assembly.
5. The stroke adjusting device of a stand-alone multi-well pumping unit according to any one of claims 1 to 3, further comprising:
the balance part is arranged on the supporting part and at least comprises a reciprocating mechanism consisting of a balance block and a fixed pulley, and the reciprocating mechanism is connected with the underground oil pumping assembly.
6. The stroke adjusting device of a stand-alone multi-well pumping unit according to any one of claims 1 to 4, further comprising:
and the rope hanger is arranged on the underground oil pumping assembly and is used for bearing the power input provided by the power flexible rope and the balance block.
7. The stroke adjusting device of a stand-alone multi-well pumping unit according to any one of claims 1 to 4, wherein the downhole pumping unit comprises:
sucker rod and leak-proof oil-well pump.
8. The stroke adjusting device of the stand-alone multi-well pumping unit according to any one of claims 1 to 4, wherein the stand-alone multi-well pumping unit comprises:
a power part outputting torque through a rotating shaft;
the crank part comprises two crank mechanisms, the two crank mechanisms are respectively and fixedly connected with the two end parts of the rotating shaft, and the free end of each crank mechanism is connected with a plurality of power flexible ropes;
the power output part comprises a plurality of power flexible rope guide assemblies which are uniformly distributed along the circumference, and the plurality of power flexible rope guide assemblies are fixed on the power output frame;
the free end of the crank mechanism is fixedly connected with one end of the power flexible rope, and the other end of the power flexible rope provides power output to the outside through the power flexible rope guiding assembly.
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| CN202110354237.XA CN113153226B (en) | 2021-04-01 | 2021-04-01 | Stroke regulating device of single-machine multi-well pumping unit |
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| CN202110354237.XA CN113153226B (en) | 2021-04-01 | 2021-04-01 | Stroke regulating device of single-machine multi-well pumping unit |
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| CN113153226B CN113153226B (en) | 2023-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090523A (en) * | 2023-10-20 | 2023-11-21 | 大庆市华禹石油机械制造有限公司 | Automatic operation vehicle for carbon fiber continuous sucker rod |
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| CN117090523B (en) * | 2023-10-20 | 2024-01-12 | 大庆市华禹石油机械制造有限公司 | Automatic operation vehicle for carbon fiber continuous sucker rod |
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| CN113153226B (en) | 2023-05-05 |
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