CN113027388B - Large-stroke beam-pumping unit - Google Patents
Large-stroke beam-pumping unit Download PDFInfo
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- CN113027388B CN113027388B CN202110346141.9A CN202110346141A CN113027388B CN 113027388 B CN113027388 B CN 113027388B CN 202110346141 A CN202110346141 A CN 202110346141A CN 113027388 B CN113027388 B CN 113027388B
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- 238000005086 pumping Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 241001023788 Cyttus traversi Species 0.000 claims abstract description 8
- 239000002585 base Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 19
- 239000012458 free base Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000001802 infusion Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005094 computer simulation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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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
- E21B43/127—Adaptations of walking-beam pump systems
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Rehabilitation Tools (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a large-stroke beam-pumping unit, which comprises a base and a driving mechanism fixedly installed at one end of the base, wherein a walking beam is arranged at the other end of the base through a support mechanism to form a walking beam type structure, a horse head is installed at the front end of the walking beam, the rear end of the walking beam is connected with the driving mechanism through a connecting rod to form a crank-connecting rod structure, a middle seat is installed on the walking beam in a sliding manner, the joint of the middle seat and the support mechanism is connected through a stress arc device, the support mechanism comprises a front support and a rear support, the top ends of the front support and the rear support are connected through an articulated piece, and the other ends of the front support and the rear support are both installed on two sides of the base in a sliding manner; the invention reduces stress concentration by arranging the stress arc device and optimizing asynchronous sliding of the bracket mechanism to adjust the included angle between the bracket mechanism and the connecting line of the articulated piece and the projection point, thereby serving a crank connecting rod mechanism applied to a large-stroke beam pumping unit.
Description
Technical Field
The invention relates to the technical field of pumping units, in particular to a large-stroke beam-pumping unit.
Background
As petroleum is one of the world's major energy sources, the demand for petroleum products is increasing with the development of manufacturing industries such as automobiles, and thus the demand for oil production equipment is also increasing. However, the geology varies from place to place over the world, and therefore different performance requirements are placed on oil production equipment.
At present, oil extraction equipment in the world is mainly divided into a beam pumping unit and a tower pumping unit, wherein the beam pumping unit is mainly applied to medium and small strokes (240in. and below), and the tower pumping unit is applied to long strokes (240in. and above). Therefore, the long-stroke pumping unit has no application of a walking beam and mainly adopts a tower type.
However, in practice it has been found that beam pumping units are fifty percent more reliable than tower-type pumping units and that beam pumping units are manufactured at thirty to fifty percent less cost than tower-type pumping units. It mainly comprises the following steps: as shown in fig. 2, the stroke size of the beam pumping unit is mainly related to the a value and the H value, the larger the stroke is, the larger the a value and the H value are, and under the same wellhead load, the less desirable the stress on all structural members is (the stress is greater than the material strength, or stress concentration occurs, which causes structural member cracking), if the stress state is improved by changing other values, the motion characteristic is poor (the transmission ratio is low, and the efficiency is low). Therefore, the optimal matching of the values in the graph can not only ensure that the force transmission is high and stable, but also meet the motion performance (large stroke is completed), and the structural strength is also met and economical, however, due to the characteristics of the crank-link mechanism, the requirements are contradictory, so the development of the beam pumping unit in the long stroke direction is always limited.
Disclosure of Invention
The invention aims to provide a large-stroke beam pumping unit to solve the technical problem in the prior art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
the utility model provides a large-stroke beam-pumping unit, includes base and fixed mounting the actuating mechanism of base one end the base other end is provided with the walking beam through gimbal mechanism the horse head is installed to the front end of walking beam, just the rear end of walking beam pass through the connecting rod with actuating mechanism connects, sliding mounting has well seat on the walking beam, well seat is connected through stress arc device with gimbal mechanism's junction, gimbal mechanism includes that the articulated elements is passed through on the top and fore-stock and after-poppet are connected, the fore-stock with the equal slidable mounting of the other end of after-poppet is in the base both sides.
Further, setting:
a is the distance from the horse head to the middle seat;
c is the distance from the middle seat to the rear end of the walking beam;
i is the distance between the rotation center of the driving mechanism and the projection of the middle seat on the base;
p is the length of the connecting rod;
h is the distance between the middle seat and the base;
g is the distance between the rotation center of the driving mechanism and the base;
r is the rotation radius of the driving mechanism;
the thickness of the material is determined by the following steps of A, C, I, H, G, 1524 and 2047 mm, wherein A is 5791 to 7395 mm, C is 3050 to 3611 mm, I is 3050 to 3569 mm, P is 5759 to 7386 mm, H is 8636 to 10838 mm, and R is 1524 to 2047 mm.
Further, the distance, the length and the turning radius of the beam pumping unit are adjusted through a trial and error method, a dynamic characteristic curve of the beam pumping unit is output through dynamic simulation calculation, and the distance, the length and the turning radius are adjusted again according to feedback of the dynamic characteristic curve until the dynamic characteristic curve is optimal.
Further, the walking beam is connected with a crank of the driving mechanism through a connecting rod to form a crank connecting rod structure, the walking beam and the bracket mechanism form a walking beam structure with a large stroke by adjusting the distance, the length and the rotating radius, and the crank connecting rod structure is matched with the stress arc device and the bracket mechanism to form a walking beam structure with a large stroke.
Further, the stress arc device extends in an arc shape towards two ends along the long axis direction of the walking beam.
Further, the stress arc device comprises a bearing seat connected with the support mechanism and a patch body connected with the middle seat;
the section of bearing frame is trapezoidal, just the bearing frame with extend the body through the arc and connect between the paster body, bearing frame, arc extend the body and the paster body is integrated structure.
Further, the articulated elements both sides all are provided with the post that extends, the fore-stock with the after-poppet overlaps respectively to be established on the post that extends of articulated elements both sides, the fore-stock with the after-poppet is in along the major axis direction movable mounting of walking beam with the adjustment on the base the fore-stock with contained angle between the after-poppet.
Further, a plumb line of the middle seat is set as a center line, an included angle between the front support and the center line is 0-10 degrees, and an included angle between the rear support and the center line is 0-16 degrees
Further, all there is the relative slide rail that sets up along the equal fixed mounting of axial on fore-stock and the after-poppet, every all be provided with on the slide rail along the free base of slide rail free activity, two through air spring group link between the free base, air spring group constitutes through a plurality of head and the tail self-locking type air spring of connecting in order, and every adjacent self-locking type air spring and self-locking type air spring with all connect through articulated between the free base.
Furthermore, a self-balancing weight box is movably mounted on the walking beam in a sliding manner, a plurality of isolating baffles arranged in a zigzag manner are arranged in the self-balancing weight box, and a liquid injection hole is formed in the self-balancing weight box corresponding to an inlet of each isolating baffle;
the liquid injection hole is connected with a liquid distribution box arranged on the base through a liquid injection and infusion guide pipe, and the liquid distribution box supplies counterweight liquid to balance the counterweight of the walking beam through a control system according to the difference of included angles between the front support and the central line and between the rear support and the central line.
Compared with the prior art, the invention has the following beneficial effects:
the invention reduces stress concentration by arranging the stress arc device and optimizing asynchronous sliding of the bracket mechanism to adjust the included angle between the bracket mechanism and the connecting line of the articulated piece and the projection point, thereby serving a crank connecting rod mechanism applied to a large-stroke beam pumping unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the beam-pumping unit of the present invention;
FIG. 3 is a schematic structural view of a stress arc apparatus according to the present invention;
FIG. 4 is a schematic view of the angle between the support structure and the center line of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a base; 2-a drive mechanism; 3-a support mechanism; 4-a walking beam; 5-donkey head; 6-connecting rod; 7-a middle seat; 8-a stress arc device; 9-extending the column; 10-self-balancing weight box; 11-an infusion catheter; 12-liquid distribution box;
301-front support; 302-rear support; 303-free base; 304-gas spring set;
801-bearing seats; 802-patch body; 803-arc extension.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides a large-stroke beam-pumping unit, which comprises a base 1 and a driving mechanism 2 fixedly mounted at one end of the base 1, wherein a walking beam 4 is arranged at the other end of the base 1 through a bracket mechanism 3 to form a beam structure, a horse head 5 is mounted at the front end of the walking beam 4, and the rear end of the walking beam 4 is connected with the driving mechanism 2 through a connecting rod 6 to form a crank-connecting rod structure.
In the embodiment, a walking beam type structure is formed by arranging a walking beam 4 at the other end of the base 1 through a bracket mechanism 3, and a crank connecting rod structure is formed by connecting the rear end of the walking beam 4 with the driving mechanism 2 through a connecting rod 6, namely, the principle of a crank connecting rod mechanism (four connecting rods) is applied to a large-stroke (240in., namely more than 6.1 m) walking beam pumping unit for the first time.
Wherein, actuating mechanism includes the motor, and the motor passes through the belt and is connected with the reduction gear, and the reduction gear is connected with connecting rod 6 through the crank axle.
In the prior art, the beam pumping unit is mainly applied to medium and small strokes (240in. and below), and the tower type pumping unit is applied to long strokes (240in. and above). Therefore, the long-stroke pumping unit has no application of a walking beam and mainly adopts a tower type.
The reason is mainly to consider the transmission ratio and the stress strength of the structural member. To further explain the above problem, as shown in fig. 2, first:
a is the distance from the horse head 5 to the middle seat 7;
c is the distance from the middle seat 7 to the rear end of the walking beam 4;
i is the distance from the rotation center of the driving mechanism 2 to the projection of the middle seat 7 on the base 1;
p is the length of the connecting rod 6;
h is the distance between the middle seat 7 and the base 1;
g is the distance between the rotation center of the driving mechanism 2 and the base 1;
r is the radius of rotation of the drive mechanism 2.
The stroke size of the beam-pumping unit is mainly related to an A value and an H value, the larger the stroke is, the larger the A value and the H value are, and under the same well head load condition, the less ideal the stress of all structural parts is (the stress is greater than the material strength, or stress concentration occurs, so that the structural parts are cracked), if the stress state is improved by changing other values, the poor motion characteristic is caused (the transmission ratio is low, and the efficiency is low). Therefore, the optimal matching of the values in the graph can not only ensure that the force transmission is high and stable, but also meet the motion performance (large stroke is completed), and the structural strength is also met and economical, however, due to the characteristics of the crank-link mechanism, the requirements are contradictory, so the development of the beam pumping unit in the long stroke direction is always limited.
In the invention, the walking beam 4 is connected with a crank of the driving mechanism 2 through a connecting rod 6 to form a crank-connecting rod structure, the walking beam 4 and the bracket mechanism 3 form a large-stroke walking beam structure by adjusting the distance, the length and the rotating radius, and the crank-connecting rod structure, the stress arc device 8 and the bracket mechanism 3 are matched with the large-stroke walking beam structure. The crank-link mechanism is applied to a large-stroke beam pumping unit to improve the reliability of the beam pumping unit and reduce the manufacturing cost, and particularly: the distance, the length and the turning radius of the beam pumping unit are adjusted through a trial and error method, a dynamic characteristic curve of the beam pumping unit is output through dynamic simulation calculation, and the distance, the length and the turning radius are adjusted again according to the feedback of the dynamic characteristic curve until the dynamic characteristic curve is optimal.
In the present embodiment, each size value is optimized as follows:
| A(mm) | C(mm) | I(mm) | P(mm) | H(mm) | G(mm) | R(mm) |
| 5791～7395 | 3050～3611 | 3050～3569 | 5759～7386 | 8636～10838 | 2819～3643 | 1524～2047 |
in the present invention, the objective of applying the crank-link mechanism to a large-stroke beam-pumping unit cannot be achieved only by optimizing the parameters. Therefore, further, as shown in fig. 1 and 3, a middle seat 7 is slidably mounted on the walking beam 4, a joint of the middle seat 7 and the bracket mechanism 3 is connected through a stress arc device 8, the bracket mechanism 3 includes a front bracket 301 and a rear bracket 302, top ends of which are connected through a hinge, and the other ends of the front bracket 301 and the rear bracket 302 are slidably mounted on two sides of the base 1.
In a first aspect, the stress arc device 8 extends in an arc shape toward both ends along the long axis direction of the walking beam 4. Specifically, the stress arc device 8 comprises a bearing seat 801 connected with the bracket mechanism 3 and a patch body 802 connected with the middle seat 7;
the section of the bearing seat 801 is trapezoidal, the bearing seat 801 is connected with the patch body 802 through the arc extension body 803, and the bearing seat 801, the arc extension body 803 and the patch body 802 are of an integrated structure.
The stress arc device 8 is adopted to connect the middle seat 7 and the support mechanism 3, so that the stress of the middle seat 7 is reduced, and the fatigue strength is improved. The main reason is that the large stroke beam pumping unit causes a large A value, so that the stress state of the beam is poor, stress concentration occurs, and the service life of the structure is greatly reduced. The stress is reduced from 310MPa to 98 MPa.
In a second aspect, the articulated elements both sides all are provided with and extend post 9, fore-stock 301 with after-poppet 302 overlaps respectively and is established on the extension post 9 of articulated elements both sides, fore-stock 301 with after-poppet 302 is in along walking beam 4's major axis direction movable mounting is in order to adjust on the base 1 fore-stock 301 with contained angle between the after-poppet 302. Setting the plumb line of the middle seat 7 as a central line, optimizing the leg angles of the front and rear supports, improving the stress state of the supports, improving the reliability, and continuously adjusting the leg angles of the front and rear supports through a trial and error method to perform dynamics and finite element analysis until the strength requirement is met, wherein, as shown in fig. 4, the included angle between the front support 301 and the central line is 10 degrees, and the included angle between the rear support 302 and the center is 16 degrees.
In the present embodiment, since the front bracket 301 and the rear bracket 302 are asymmetrically arranged, there may be an unbalance problem without external force, and therefore, in order to further improve the stability and reliability of the whole beam pumping unit, the present invention further improves the two features as follows:
the method is characterized in that: the front support 301 and the rear support 302 are respectively and fixedly provided with slide rails which are arranged oppositely along the axial direction, each slide rail is provided with a free base 303 which can freely move along the slide rail, and the free bases are connected through a gas spring group 304. The stability of the front bracket 301 and the rear bracket 302 is improved by arranging the gas spring set 304 to form a triangular shape in connection with the front bracket 301 and the rear bracket 302, and the gas spring set 304 in the invention can follow the movement of the front bracket 301 and the rear bracket 302 to change the following performance within an allowable range, so that the gas spring set has flexible adaptability while having stability.
Wherein, the free base connected with the gas spring group 304 has relative movable capacity by arranging sliding rails on the front bracket 301 and the rear bracket 302.
Further, in order to make the gas spring assembly 304 have better stability, the gas spring assembly 304 is composed of a plurality of self-locking gas springs connected end to end in sequence, and each adjacent self-locking gas spring and the self-locking gas spring are connected with the free base 303 through hinges. The gas spring has the capability of automatic locking, namely, the gas spring can be stopped at any position in the stroke by virtue of the release mechanism, and has larger locking force after being stopped, thereby achieving the aim of locking.
And (2) feature: there is self-balancing weight box 10 through gliding mode movable mounting on the walking beam 4, self-balancing weight box 10 is inside to be provided with a plurality of isolation baffles that are the setting of returning the shape, and correspond on the self-balancing weight box 10 the entrance of isolation baffle is provided with annotates the liquid hole.
The liquid injection hole is connected with a liquid distribution box 12 arranged on the base 1 through a liquid injection and infusion pipe 11, and the liquid distribution box 12 supplies counterweight liquid to balance the counterweight of the walking beam 4 through a control system according to the difference of included angles between the front support 301 and the rear support 302 and a central line.
In the present invention, when the balance weight of the walking beam changes due to the adjustment of the front bracket 301 and the rear bracket 302, on one hand, the balance weight is realized by moving the self-balancing weight box 10, and on the other hand, the self weight of the self-balancing weight box 10 is adjusted by the control system according to the need so as to realize the balance weight of the walking beam.
The load of the oil pumping unit is balanced by the two aspects of the self-balancing weight box 10, and the rapid stress change of each part of the oil pumping unit during starting and running can be effectively buffered, so that the load change curve of an oil well is well and automatically adapted, and the influence of the adjustment of the included angle between the front support 301 and the rear support 302 on the oil pumping unit is balanced, so that the oil pumping unit can adapt to the improvement.
In summary, in the present invention, the stress concentration is reduced by setting the stress arc device 8 and optimizing the asynchronous sliding of the front bracket 301 and the rear bracket 302 to adjust the included angle between the stress arc device and the center line of the connecting line of the hinge and the projection point, so as to serve the application of the crank-link mechanism to the large-stroke beam pumping unit.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (4)
1. A large stroke beam-pumping unit comprises a base (1) and a driving mechanism (2) fixedly arranged at one end of the base (1), a walking beam (4) is arranged at the other end of the base (1) through a bracket mechanism (3), a horse head (5) is arranged at the front end of the walking beam (4), the rear end of the walking beam (4) is connected with the driving mechanism (2) through a connecting rod (6), it is characterized in that a self-balancing weight box (10) is movably arranged on the walking beam (4) in a sliding way, the walking beam (4) is provided with a middle seat (7) in a sliding way, the driving mechanism (2) drives the walking beam (4) to drive the horse head (5) to move through a connecting rod (6), wherein, a stress arc device (8) for preventing stress concentration is arranged at the joint of the connecting rod (6) and the walking beam (4) and the joint of the middle seat (7) and the bracket mechanism (3);
the stress arc device (8) extends in an arc shape towards two ends along the long axis direction of the walking beam (4), the stress arc device (8) comprises a bearing seat (801) connected with the support mechanism (3) and a patch body (802) connected with the middle seat (7), the section of the bearing seat (801) is trapezoidal, the bearing seat (801) is connected with the patch body (802) through an arc-shaped extending body (803), and the bearing seat (801), the arc-shaped extending body (803) and the patch body (802) are of an integrated structure;
the support mechanism (3) comprises a front support (301) and a rear support (302) which are connected through a hinge at the top ends, and the front support (301) and the rear support (302) are movably mounted on the base (1) along the long axis direction of the walking beam (4) to adjust the included angle between the front support (301) and the rear support (302) so as to improve the stress state of the support mechanism (3);
the articulated elements both sides all are provided with and extend post (9), fore-stock (301) with the equal movable mounting of the other end of after-poppet (302) is in base (1) both sides, fore-stock (301) with after-poppet (302) cover is respectively established on the extension post (9) of articulated elements both sides, set for the plumb line of well seat (7) is the central line, fore-stock (301) with contained angle between the central line is 10, after-poppet (302) with contained angle between the central line is 16, all along the equal fixed mounting of axial slide rail that sets up, every all be provided with on the slide rail along slide rail free activity's free base (303), two connect through air spring group (304) between the free base, air spring group (304) are formed through the auto-lock type that a plurality of head and the tail connected in order, each adjacent self-locking gas spring and the self-locking gas spring are hinged with the free base (303);
setting:
a is the distance from the horse head (5) to the middle seat (7);
c is the distance from the middle seat (7) to the rear end of the walking beam (4);
i is the distance from the rotation center of the driving mechanism (2) to the projection of the middle seat (7) on the base (1);
p is the length of the connecting rod (6);
h is the distance between the middle seat (7) and the base (1);
g is the distance between the rotation center of the driving mechanism (2) and the base (1);
r is the rotation radius of the driving mechanism (2);
the thickness of the material is determined by the following steps of A, C, I, H, G, 1524 and 2047 mm, wherein A is 5791 to 7395 mm, C is 3050 to 3611 mm, I is 3050 to 3569 mm, P is 5759 to 7386 mm, H is 8636 to 10838 mm, and R is 1524 to 2047 mm.
2. The large stroke beam-pumping unit of claim 1, wherein the beam-pumping unit adjusts the distance, length and turning radius by trial and error and outputs a dynamic characteristic curve of the beam-pumping unit by dynamic simulation calculation, and adjusts the distance, length and turning radius again according to the feedback of the dynamic characteristic curve until the dynamic characteristic curve is optimal.
3. A large stroke beam-pumping unit as claimed in claim 2, characterized in that the walking beam (4) is connected with the crank of the driving mechanism (2) by a connecting rod (6) to form a crank-connecting rod structure, the walking beam (4) and the bracket mechanism (3) form a large stroke walking beam structure by adjusting the distance, length and turning radius, and the crank-connecting rod structure, the stress arc device (8) and the bracket mechanism (3) are matched with the large stroke walking beam structure.
4. The large-stroke beam-pumping unit as claimed in claim 1, wherein a plurality of isolating baffles are arranged in the self-balancing weight box (10) in a zigzag manner, and a liquid injection hole is arranged at the inlet of the self-balancing weight box (10) corresponding to the isolating baffles;
the liquid injection hole is connected with a liquid distribution box (12) arranged on the base (1) through a liquid injection and infusion guide pipe (11), and the liquid distribution box (12) supplies balance weight liquid to balance the balance weight of the walking beam (4) through a control system according to the difference of included angles between the front support (301) and the rear support (302) and a central line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110346141.9A CN113027388B (en) | 2021-03-31 | 2021-03-31 | Large-stroke beam-pumping unit |
| PCT/CN2021/088826 WO2022205538A1 (en) | 2021-03-31 | 2021-04-22 | Large-stroke walking beam pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110346141.9A CN113027388B (en) | 2021-03-31 | 2021-03-31 | Large-stroke beam-pumping unit |
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| Publication Number | Publication Date |
|---|---|
| CN113027388A CN113027388A (en) | 2021-06-25 |
| CN113027388B true CN113027388B (en) | 2022-03-04 |
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|---|---|---|---|
| CN202110346141.9A Active CN113027388B (en) | 2021-03-31 | 2021-03-31 | Large-stroke beam-pumping unit |
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| CN (1) | CN113027388B (en) |
| WO (1) | WO2022205538A1 (en) |
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| CN214035623U (en) * | 2021-03-31 | 2021-08-24 | 德瑞石油装备（青岛）有限公司 | Large-stroke beam-pumping unit |
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| WO2022205538A1 (en) | 2022-10-06 |
| CN113027388A (en) | 2021-06-25 |
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Effective date of registration: 20220727 Address after: 3718 Tuanjie Road, Qingdao area, China (Shandong) pilot Free Trade Zone, Qingdao, Shandong 266000 Patentee after: Apex petroleum equipment (Qingdao) Co.,Ltd. Address before: 266426 NO.666, Kunlunshan North Road, Huangdao District, Qingdao City, Shandong Province Patentee before: DERUI PETROLEUM EQUIPMENT (QINGDAO) CO.,LTD. |