CN111852405B - Hydraulic transmission reciprocating type oil extraction pumping unit - Google Patents
Hydraulic transmission reciprocating type oil extraction pumping unit Download PDFInfo
- Publication number
- CN111852405B CN111852405B CN202011000074.7A CN202011000074A CN111852405B CN 111852405 B CN111852405 B CN 111852405B CN 202011000074 A CN202011000074 A CN 202011000074A CN 111852405 B CN111852405 B CN 111852405B
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- Prior art keywords
- box body
- fixedly connected
- pumping unit
- wire rope
- transmission
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
- B66F7/025—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
- F16D1/04—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
Abstract
The invention relates to the technical field of oil exploitation, in particular to a hydraulic transmission reciprocating oil exploitation pumping unit, which can effectively cool and radiate the friction part between a steel wire rope and a support through a driving motor, an air suction mechanism and a cooling mechanism, and can also cool and radiate the joint between the steel wire rope and a first fixed pulley and a second fixed pulley, thereby effectively improving the cooling and radiating effects of the steel wire rope when in use, being beneficial to reducing the influence of friction heat on the steel wire rope and ensuring the safety of the steel wire rope in use; through the elevating system, the suction mechanism, the second transmission mechanism and the first transmission mechanism that set up, can realize highly adjusting the pneumatic cylinder that is located in the box, then can highly adjust wire rope's end, be convenient for realize with wire rope end fixed connection's pumping unit height-adjustable, do benefit to then and realize driving the oil pumping to the pumping unit of mounting height difference, improved the application range and the convenience of beam-pumping unit.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a hydraulic transmission reciprocating type oil exploitation oil pumping unit.
Background
Oil engineering is the general term for various engineering technical measures taken on oil reservoirs by production wells and injection wells according to development targets in the oil field exploitation process. As a comprehensive application subject, the theory, the engineering design method and the implementation technology of various engineering technical measures which can economically and effectively act on an oil reservoir to improve the yield of an oil well and the recovery ratio of crude oil are researched.
When the hydraulic transmission reciprocating type oil exploitation pumping unit in the prior art is used, because certain friction is generated between the steel wire rope and the guide wheel on the support, heat is generated in the friction process, the friction part cannot be effectively cooled and radiated in the prior art, and in addition, the lifting height of the tail end of the steel wire rope cannot be adjusted according to actual use requirements.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a hydraulic transmission reciprocating type oil extraction pumping unit.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic transmission reciprocating oil pumping unit for petroleum exploitation comprises a base, a support is mounted at the upper end of the base, a steel wire rope is slidably arranged at the upper end of the support, a box body is fixedly connected to the upper end of the base, the top surface of the box body is communicated with a cooling mechanism, the air outlet end of the cooling mechanism is positioned above the support, a first fixed pulley is fixedly connected to the top surface of the box body, a lifting mechanism is arranged in the box body, two ends of the lifting mechanism are respectively slidably connected with the inner walls of the left end and the right end of the box body, a hydraulic cylinder and a second fixed pulley are fixedly connected to the lifting mechanism, one end of the steel wire rope sequentially slidably penetrates through the top surface of the box body, the first fixed pulley and the second fixed pulley and is fixedly connected with the hydraulic cylinder, a first transmission mechanism is rotatably arranged on the inner wall of the box body and is in transmission connection with the lifting mechanism, and a second transmission mechanism matched, the utility model discloses a dust screen dust suction box, including box, dust screen, suction mechanism, second drive mechanism, base, the intercommunication is equipped with the intake pipe on the lateral wall of box, install the dust screen in the intake pipe, be equipped with suction mechanism in the intake pipe, suction mechanism rotates and runs through the box setting, suction mechanism is connected with the transmission of second drive mechanism, the upper end fixedly connected with driving motor of base, driving motor's output shaft end and suction mechanism fixed connection.
Preferably, cooling mechanism sets up in the cooling pipe of box upper end including the intercommunication, the cooling pipe is the setting of L type, the bottom of the horizontal part of cooling pipe is equipped with the cooling mouth, the cooling mouth is located the support directly over.
Preferably, elevating system sets up the first threaded rod between box top surface and bottom including rotating, threaded sleeve is equipped with the lifter plate on the first threaded rod, the both ends of lifter plate respectively with the box about both ends inner wall sliding connection, the equal fixed setting in the upper end of lifter plate of second fixed pulley and pneumatic cylinder, coaxial fixedly connected with worm wheel on the first threaded rod of lifter plate below, worm wheel and first drive mechanism transmission are connected.
Preferably, the inner walls of the left end and the right end of the box body are vertically provided with first sliding grooves, first sliding blocks are arranged in the first sliding grooves, and the first sliding blocks are fixedly connected with the side walls of the left end and the right end of the lifting plate respectively.
Preferably, the first transmission mechanism comprises a worm rotatably arranged on the inner wall of the box body, the worm is meshed with the worm wheel, one end of the worm, far away from the inner wall of the box body, is fixedly connected with a connecting body, and one end of the connecting body, far away from the worm, is provided with a square fixing hole matched with the second transmission mechanism.
Preferably, second drive mechanism runs through the connecting pipe that the box lateral wall set up including rotating, the first belt pulley of coaxial fixedly connected with on the connecting pipe, first belt pulley and the transmission of mechanism of breathing in are connected, it is equipped with the connecting rod to slide to run through in the connecting pipe, the one end fixedly connected with that the connecting rod is located the box is square dead lever with square fixed orifices assorted, the screw thread runs through on the lateral wall of connecting pipe and the connecting rod and is equipped with same root second threaded rod.
Preferably, the inner wall of the connecting pipe is provided with two second sliding grooves, two second sliding blocks matched with the second sliding grooves are arranged in the second sliding grooves in a sliding mode, and the two second sliding blocks are fixedly connected with the side walls of the two ends of the connecting rod respectively.
Preferably, the air suction mechanism comprises a rotating shaft arranged in the air inlet pipe, the rotating shaft rotates to penetrate through the box body and is fixedly connected with the tail end of an output shaft of the driving motor, a second belt pulley is coaxially and fixedly connected to the part, located in the box body, of the rotating shaft, the second belt pulley is in transmission connection with the first belt pulley, and fan blades are coaxially and fixedly connected to the part, located in the air inlet pipe, of the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the driving motor, the air suction mechanism and the cooling mechanism, not only can the friction part of the steel wire rope and the support be effectively cooled, but also the joint of the steel wire rope and the first fixed pulley and the second fixed pulley can be cooled, so that the cooling effect of the steel wire rope in use can be effectively improved, the influence of friction heat generation on the steel wire rope can be favorably reduced, the safety of the steel wire rope in use is ensured, the service life of the steel wire rope is conveniently prolonged, and the cost of oil exploitation is effectively reduced.
2. According to the invention, through the arrangement of the lifting mechanism, the air suction mechanism, the second transmission mechanism and the first transmission mechanism, the height of the hydraulic cylinder in the box body can be adjusted, and then the height of the tail end of the steel wire rope can be adjusted, so that the height of the oil pumping device fixedly connected with the tail end of the steel wire rope can be adjusted, and then the oil pumping device with different installation heights can be driven to pump oil, and the application range and the convenience of the oil pumping unit are improved.
Drawings
FIG. 1 is a perspective view of a hydraulically driven reciprocating oil production pumping unit in accordance with the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic diagram of the left side structure of a connecting body in a hydraulic transmission reciprocating type oil extraction pumping unit provided by the invention;
fig. 4 is a perspective view of an intake pipe of a hydraulic transmission reciprocating type oil production pumping unit provided by the invention.
In the figure: the device comprises a base 1, a support 2, a steel wire rope 3, a box 4, a first fixed pulley 5, a hydraulic cylinder 6, a second fixed pulley 7, a driving motor 8, an air inlet pipe 9, a cooling pipe 10, a cooling port 11, a first threaded rod 12, a lifting plate 13, a worm wheel 14, a first chute 15, a first sliding block 16, a worm 17, a connecting body 18, a square fixing hole 19, a connecting pipe 20, a first belt pulley 21, a connecting rod 22, a square fixing rod 23, a second threaded rod 24, a second chute 25, a second sliding block 26, a rotating shaft 27, a second belt pulley 28, fan blades 29 and a dust screen 30.
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.
Referring to fig. 1-4, a hydraulic transmission reciprocating oil extraction pumping unit comprises a base 1, a support 2 is installed at the upper end of the base 1, a steel wire rope 3 is slidably arranged at the upper end of the support 2, wherein the steel wire rope 3 is slidably connected with a guide wheel at the upper end of the support 2, when the steel wire rope 3 is contracted and expanded, heat is easily generated due to friction, a box body 4 is fixedly connected at the upper end of the base 1, the top surface of the box body 4 is communicated with a cooling mechanism, the air outlet end of the cooling mechanism is positioned above the support 2, a first fixed pulley 5 is fixedly connected with the top surface of the box body 4, a lifting mechanism is arranged in the box body 4, two ends of the lifting mechanism are respectively slidably connected with the inner walls of the left end and the right end of the box body 4, a hydraulic cylinder 6 and a second fixed pulley 7 are fixedly connected on the lifting mechanism, one end of the steel, it should be noted that, the sliding connection between the steel wire rope 3 and the top surface of the box 4 is provided with a sealing layer (not shown in the figure) to ensure that the air current enters the cooling mechanism, the inner wall of the box 4 is provided with a first transmission mechanism in a rotating manner, the first transmission mechanism is in transmission connection with the lifting mechanism, the side wall of the box 4 is provided with a second transmission mechanism matched with the first transmission mechanism in a rotating manner, the side wall of the box 4 is provided with an air inlet pipe 9 in a communicating manner, a dust screen 30 is installed in the air inlet pipe 9, an air suction mechanism is arranged in the air inlet pipe 9 and is arranged to penetrate through the box 4 in a rotating manner, the air suction mechanism is in transmission connection with the second transmission mechanism, the upper end of the base 1 is fixedly connected.
Wherein, cooling mechanism sets up in the cooling tube 10 of box 4 upper end including the intercommunication, and cooling tube 10 is the setting of L type, and the bottom of the horizontal part of cooling tube 10 is equipped with cooling opening 11, and cooling opening 11 is located support 2 directly over.
Wherein, elevating system is including rotating first threaded rod 12 that sets up between 4 top surfaces of box and bottom, and threaded sleeve is equipped with lifter plate 13 on first threaded rod 12, and the both ends of lifter plate 13 respectively with box 4 about both ends inner wall sliding connection, second fixed pulley 7 and pneumatic cylinder 6 are all fixed to be set up in the upper end of lifter plate 13, coaxial fixedly connected with worm wheel 14 on the first threaded rod 12 of lifter plate 13 below, worm wheel 14 and the transmission of first drive mechanism are connected.
Wherein, equal vertical first spout 15 that is equipped with on the both ends inner wall about box 4, be equipped with first slider 16 in the first spout 15, two first sliders 16 respectively with lifter plate 13 about both ends lateral wall fixed connection.
The first transmission mechanism comprises a worm 17 rotatably arranged on the inner wall of the box body 4, the worm 17 is meshed with the worm wheel 14, one end, far away from the inner wall of the box body 4, of the worm 17 is fixedly connected with a connecting body 18, one end, far away from the worm 17, of the connecting body 18 is provided with a square fixing hole 19 matched with the second transmission mechanism, and it needs to be noted that under the limitation of the first sliding groove 15, the lifting plate 13 can be effectively prevented from colliding with the worm wheel 14, and the hydraulic cylinder 6 can be prevented from colliding with the first fixed pulley 5.
More specifically, second drive mechanism is including rotating connecting pipe 20 that runs through the setting of box 4 lateral wall, the first belt pulley 21 of coaxial fixedly connected with on the connecting pipe 20, first belt pulley 21 is connected with the transmission of the mechanism of breathing in, it is equipped with connecting rod 22 to slide to run through in the connecting pipe 20, connecting rod 22 is located the one end fixedly connected with and square fixed orifices 19 assorted square dead lever 23 in box 4, the lateral wall of connecting pipe 20 and the screw thread run through on connecting rod 22 are equipped with same root second threaded rod 24, it should explain, the sealing washer (not shown in the figure) is equipped with to the connecting pipe 20 internal fixation guarantees the leakproofness of box 4, a plurality of screw holes on connecting rod 22, be convenient for second threaded rod 24 and its threaded connection, be connected and separate square dead lever 23 and square fixed orifices 19 and carry out.
Wherein, be equipped with two second spout 25 on the inner wall of connecting pipe 20, all slide in two second spout 25 and be equipped with assorted second slider 26 with it, two second sliders 26 respectively with the both ends lateral wall fixed connection of connecting rod 22.
Wherein, the air suction mechanism is including setting up the rotation axis 27 in intake pipe 9, rotation axis 27 rotates and runs through box 4 setting and with driving motor 8's output shaft end fixed connection, rotation axis 27 is located coaxial fixedly connected with second belt pulley 28 on the part of box 4, second belt pulley 28 passes through the belt and realizes being connected with the transmission of first belt pulley 21, rotation axis 27 is located coaxial fixedly connected with fan blade 29 on the part of intake pipe 9, it is required to explain, pneumatic cylinder 6 and driving motor 8 are prior art, do not describe herein in detail, fixedly connected with balancing weight between wire rope 3's end and the oil jack, this is prior art, do not describe herein again.
In the invention, before the use, the second threaded rod 24 is released from positioning the connecting rod 22, the connecting rod 22 is pushed to drive the square fixing rod 23 to move, the square fixing rod 23 is inserted into the square fixing hole 19 matched with the connecting rod by matching with the manual fine adjustment rotary connecting pipe 20, the connecting pipe 20 and the worm 17 can synchronously rotate due to the square limit matching of the two in the circumferential direction, the driving motor 8 is started to drive the rotating shaft 27 and the second belt pulley 28 to synchronously rotate, the connecting pipe 20 and the worm 17 can be driven to synchronously rotate due to the transmission connection of the second belt pulley 28 and the first belt pulley 21, the first threaded rod 12 can be driven to rotate due to the meshing of the worm 17 and the worm wheel 14, the lifting plate 13 can be lifted in the box body 4, so that the height of the tail end of the steel wire rope 3 can be adjusted, the driving motor 8 is turned off after the height is adjusted, otherwise, the operation can be known, the square fixing rod 23 is separated from the square fixing hole 19, the connecting rod 22 is positioned, then the threaded connection between the lifting plate 13 and the first threaded rod 12 and the meshing action between the worm 17 and the worm wheel 14 have positioning and locking effects, the lifting plate 13 and parts at the upper end of the lifting plate are convenient to support and position, when the lifting plate is used, the hydraulic cylinder 6 stretches and retracts to drive the tail end of the steel wire rope 3 to lift, oil pumping is further convenient to carry out, the driving motor 8 is started to drive the rotating shaft 27 and the fan blades 29 to rotate rapidly, external air is convenient to be sucked into the air inlet pipe 9, enters the cooling pipe 10 through the box body 4 and acts on the joint of the support 2 and the steel wire rope 3 from the cooling port 11, the joint of the steel wire rope 3 and the support 2 can be cooled and dissipated heat, and the joint of the steel wire rope 3, the first fixed pulley 5 and the second fixed pulley 7, the cooling effect of the steel wire rope 3 in use is effectively improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A hydraulic transmission reciprocating oil pumping unit for petroleum exploitation comprises a base (1), a support (2) is installed at the upper end of the base (1), a steel wire rope (3) is arranged at the upper end of the support (2) in a sliding mode, and the hydraulic transmission reciprocating oil pumping unit is characterized in that a box body (4) is fixedly connected to the upper end of the base (1), a top surface of the box body (4) is communicated with a cooling mechanism, an air outlet end of the cooling mechanism is located above the support (2), a first fixed pulley (5) is fixedly connected to the top surface of the box body (4), a lifting mechanism is arranged in the box body (4), two ends of the lifting mechanism are respectively connected with inner walls of the left end and the right end of the box body (4) in a sliding mode, a hydraulic cylinder (6) and a second fixed pulley (7) are fixedly connected to the lifting mechanism, one end of the steel wire rope (3) sequentially slides through the top surface of the box body (4), the first fixed pulley, rotate on the inner wall of box (4) and be equipped with first drive mechanism, first drive mechanism is connected with the elevating system transmission, rotate on box (4) lateral wall and run through be equipped with first drive mechanism assorted second drive mechanism, the intercommunication is equipped with intake pipe (9) on the lateral wall of box (4), install dust screen (30) in the intake pipe of intake pipe (9), be equipped with suction mechanism in intake pipe (9), suction mechanism rotates and runs through box (4) setting, suction mechanism is connected with the second drive mechanism transmission, the upper end fixedly connected with driving motor (8) of base (1), the output shaft end and the suction mechanism fixed connection of driving motor (8).
2. The hydraulic transmission reciprocating type oil extraction pumping unit according to claim 1, wherein the cooling mechanism comprises a cooling pipe (10) which is communicated with the upper end of the box body (4), the cooling pipe (10) is arranged in an L shape, a cooling port (11) is arranged at the bottom of the horizontal part of the cooling pipe (10), and the cooling port (11) is positioned right above the support (2).
3. The hydraulic transmission reciprocating type oil extraction pumping unit as recited in claim 1, wherein the lifting mechanism comprises a first threaded rod (12) rotatably arranged between the top surface and the bottom of the box body (4), a lifting plate (13) is sleeved on the first threaded rod (12) in a threaded manner, two ends of the lifting plate (13) are respectively in sliding connection with inner walls of the left end and the right end of the box body (4), the second fixed pulley (7) and the hydraulic cylinder (6) are fixedly arranged at the upper end of the lifting plate (13), a worm gear (14) is coaxially and fixedly connected to the first threaded rod (12) below the lifting plate (13), and the worm gear (14) is in transmission connection with the first transmission mechanism.
4. The hydraulic transmission reciprocating type oil extraction pumping unit according to claim 3, characterized in that the inner walls of the left and right ends of the box body (4) are vertically provided with first sliding grooves (15), the first sliding grooves (15) are internally provided with first sliding blocks (16), and the two first sliding blocks (16) are respectively fixedly connected with the side walls of the left and right ends of the lifting plate (13).
5. The hydraulic transmission reciprocating type oil extraction pumping unit according to claim 4, characterized in that the first transmission mechanism comprises a worm (17) rotatably arranged on the inner wall of the box body (4), the worm (17) is meshed with the worm wheel (14), one end of the worm (17) far away from the inner wall of the box body (4) is fixedly connected with a connecting body (18), and one end of the connecting body (18) far away from the worm (17) is provided with a square fixing hole (19) matched with the second transmission mechanism.
6. The hydraulic transmission reciprocating type oil extraction pumping unit as claimed in claim 5, wherein the second transmission mechanism comprises a connecting pipe (20) rotatably arranged through the side wall of the box body (4), a first belt pulley (21) is coaxially and fixedly connected to the connecting pipe (20), the first belt pulley (21) is in transmission connection with the air suction mechanism, a connecting rod (22) is arranged in the connecting pipe (20) in a sliding and penetrating manner, a square fixing rod (23) matched with the square fixing hole (19) is fixedly connected to one end, located in the box body (4), of the connecting rod (22), and the same second threaded rod (24) is arranged on the side wall of the connecting pipe (20) and the connecting rod (22) in a threaded and penetrating manner.
7. The hydraulic transmission reciprocating type oil extraction pumping unit according to claim 6, characterized in that two second sliding grooves (25) are arranged on the inner wall of the connecting pipe (20), second sliding blocks (26) matched with the two second sliding grooves (25) are arranged in the two second sliding grooves in a sliding manner, and the two second sliding blocks (26) are respectively fixedly connected with the side walls of the two ends of the connecting rod (22).
8. The hydraulic transmission reciprocating type oil extraction pumping unit according to claim 5, wherein the air suction mechanism comprises a rotating shaft (27) arranged in the air inlet pipe (9), the rotating shaft (27) is rotatably arranged through the box body (4) and is fixedly connected with the tail end of the output shaft of the driving motor (8), a second belt pulley (28) is coaxially and fixedly connected on the part of the rotating shaft (27) positioned in the box body (4), the second belt pulley (28) is in transmission connection with the first belt pulley (21), and a fan blade (29) is coaxially and fixedly connected on the part of the rotating shaft (27) positioned in the air inlet pipe (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011000074.7A CN111852405B (en) | 2020-09-22 | 2020-09-22 | Hydraulic transmission reciprocating type oil extraction pumping unit |
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| CN202011000074.7A CN111852405B (en) | 2020-09-22 | 2020-09-22 | Hydraulic transmission reciprocating type oil extraction pumping unit |
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| CN111852405A CN111852405A (en) | 2020-10-30 |
| CN111852405B true CN111852405B (en) | 2020-12-01 |
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| CN113636435B (en) * | 2021-08-12 | 2023-01-03 | 中国华能集团清洁能源技术研究院有限公司 | Vertical conveying device for maintenance personnel of wind power generation equipment |
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| US5547028A (en) * | 1994-09-12 | 1996-08-20 | Pes, Inc. | Downhole system for extending the life span of electronic components |
| CN2308729Y (en) * | 1997-06-23 | 1999-02-24 | 张福庭 | Multi-cylinder hydraulic speed regulating and energy saving oil pumping machine |
| CN201172607Y (en) * | 2007-12-21 | 2008-12-31 | 南通力威机械有限公司 | Mooring winch for ocean platform |
| CN102628349B (en) * | 2012-04-23 | 2014-12-10 | 宫伟荃 | Lifting platform type pumping unit |
| CN107420073A (en) * | 2017-09-24 | 2017-12-01 | 英立（江苏）机电有限公司 | The stable automatic reversing cooking fume remover of one kind radiating |
| CN110856389A (en) * | 2019-11-21 | 2020-02-28 | 河北宏龙环保科技有限公司 | Control device for safe operation of pumping unit and pumping unit |
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Effective date of registration: 20210115 Address after: No.171 Fenhe Road, Dongying District, Dongying City, Shandong Province 257091 Patentee after: Shandong Plateau oil and gas equipment Co.,Ltd. Address before: 257091 82 Fuqian street, Dongying District, Dongying City, Shandong Province Patentee before: SHENGLI OILFIELD HIGHLAND PETROLEUM EQUIPMENT Co.,Ltd. |