CN213297919U - Novel double-screw oil pumping unit - Google Patents
Novel double-screw oil pumping unit Download PDFInfo
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- CN213297919U CN213297919U CN202021929511.9U CN202021929511U CN213297919U CN 213297919 U CN213297919 U CN 213297919U CN 202021929511 U CN202021929511 U CN 202021929511U CN 213297919 U CN213297919 U CN 213297919U
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Abstract
The utility model relates to a novel double-screw beam-pumping unit mainly includes motor, speed reducer, shaft coupling, big crown pulley, little crown pulley, belt, polished rod eye, deep groove ball bearing one, gear, driven screw, frame, chain, direction assembly, ring rail, balanced heavy, deep groove ball bearing two, base, initiative screw rod, slide rail, pulley, slider mount and constitutes its characterized in that: the motor is connected with the speed reducer, the speed reducer is vertically installed, and an output shaft of the speed reducer is connected with the driving screw rod through a coupler; the driving screw rod is connected with the driven screw rod through a gear, and the thread turning directions of the driving screw rod and the driven screw rod are the same; two ends of the driving screw and the driven screw are respectively provided with a deep groove ball bearing; one end of the belt is connected with two sides of the guide assembly, the other end of the belt is connected with the rope hanger along the small crown block pulley and the large crown block pulley, and the guide assembly is welded with the balance weight; the utility model can realize long stroke, stable operation and small dynamic load; the transmission efficiency is high; compact structure, light weight and small occupied area.
Description
Technical Field
The utility model relates to a novel double-screw type beam-pumping unit belongs to the mechanical equipment in the aspect of the oil field exploitation.
Background
As the development of oil and gas fields in China enters the middle and later stages, old oil fields in China already advance to the high water content stage, and nevertheless, the old oil fields still mainly produce oil fields in China, so that the improvement of the crude oil recovery ratio of the old oil fields with high water content is the key point of the development of the old oil fields; mechanical oil extraction is the most common oil extraction technology, and in oil extraction wells in China, the proportion of oil extraction wells with rods is as high as more than 90%, so that the key for improving the efficiency and the reliability of a mechanical oil extraction device is to improve the recovery rate of crude oil.
Among the newly added mechanical oil production wells every year, 80% of the oil wells are completed by a beam pumping unit, and the beam pumping unit has low oil production efficiency when thick oil, high-condensation oil and deep oil, particularly high-water-content oil fields are produced, so that economic and effective production cannot be realized. The currently developed pumping unit is developing towards the direction of large load, high efficiency, energy saving, long stroke and low stroke frequency, various forms of walking beam-free pumping units have been researched and designed at home and abroad, but the walking beam-free pumping unit has a relatively complex structure, so that the precision of parts has a relatively large problem, and the conditions of multiple faults and difficult maintenance are caused.
Disclosure of Invention
The utility model discloses the purpose is to improve not enough that traditional beam-pumping unit exists, provides a novel double-screw pumping unit, and this beam-pumping unit can realize big load, long stroke, low stroke, energy-efficient characteristics.
The utility model adopts the technical proposal that:
the utility model relates to a novel double-screw beam-pumping unit mainly includes motor, speed reducer, shaft coupling, big crown pulley, little crown pulley, belt, polished rod eye, deep groove ball bearing one, gear, driven screw, frame, chain, direction assembly, ring rail, balanced heavy, deep groove ball bearing two, base, initiative screw rod, slide rail, pulley, slider mount and constitutes its characterized in that: the motor is connected with the speed reducer, the speed reducer is vertically installed, and an output shaft of the speed reducer is connected with the driving screw rod through a coupler; the driving screw rod is connected with the driven screw rod through a gear, and the thread turning directions of the driving screw rod and the driven screw rod are the same; two ends of the driving screw and the driven screw are respectively provided with a deep groove ball bearing; one end of the belt is connected with two sides of the sliding block fixing frame, the other end of the belt is connected with the rope hanger along the small crown block pulley and the large crown block pulley, and the sliding block fixing frame is welded with the balance weight; the welding of frame both sides has the slide rail, and the pulley symmetric arrangement is in slider mount both sides, and the pulley contacts with the slide rail.
The annular guide rail is arranged in front of the driving screw rod and the driven screw rod and fixed at the top of the base and the rack, and the annular guide rail is accurately aligned with the two screw rods; one end of the chain is arranged in the thread grooves of the two screws, and the other end of the chain is arranged in the guide groove of the annular guide rail.
The guide assembly consists of a sliding block, a sliding block fixing frame and a chain; the chain is connected with the sliding block through a pin shaft.
The sliding block can move transversely on the sliding block fixing frame when passing through the circular arc section of the annular guide rail.
The pitch of the chain is the same as the thread pitches of the two screws; the length of the chain is larger than the semi-arc length of the annular guide rail.
The utility model has the advantages that: (1) the rotary motion of the screw is converted into the linear motion of the balance weight by adopting the connection mode of the spiral groove of the double screw and the chain, so that the up-and-down motion of the suspension point is realized. (2) The double-screw design structure is adopted, so that the larger acceleration caused by the positive and negative rotation of the motor is avoided, and the movement of the counterweight is more stable. (3) And a vertical installation mode is adopted, so that the occupied area of the whole machine is small, and the structure is simple. (4) The length of the screw can be changed according to different working conditions, and the stroke requirement of the oil pumping unit is met. (5) Compared with the common single screw and double screw structure, the transition thread does not need to be manufactured.
Drawings
Fig. 1 is a schematic structural view of the novel double-screw pumping unit of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of the guiding assembly of the present invention.
In the figure: 1. the device comprises a motor, a speed reducer, a coupler, a large crown block pulley, a small crown block pulley, a belt, a rope hanger, a deep groove ball bearing I, a gear 9, a driven screw rod 10, a rack 11, a chain 12, a guide assembly 13, a ring-shaped guide rail 14, a balance weight 15, a deep groove ball bearing II, a base 17, a driving screw rod 18, a sliding rail 19, a pulley 20, a sliding block 21 and a sliding block fixing frame 22.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model relates to a double-screw pumping unit, mainly by motor (1), speed reducer (2), shaft coupling (3), big crown block wheel (4), little crown block wheel (5), belt (6), polished rod eye (7), deep groove ball bearing (8), gear (9), driven screw (10), frame (11), chain (12), direction assembly (13), ring rail (14), balanced heavy (15), deep groove ball bearing two (16), base (17), initiative screw (18), slide rail (19), pulley (20), slider (21), slider mount (22) are constituteed, its characterized in that: the motor (1) is connected with the speed reducer (2), the speed reducer (2) is vertically installed, and an output shaft of the speed reducer (2) is connected with the driving screw (18) through the coupler (3); the driving screw (18) is connected with the driven screw (10) through a gear (9), and the thread turning directions of the driving screw (18) and the driven screw (10) are the same; two ends of the driving screw rod (18) and the driven screw rod (10) are respectively provided with a deep groove ball bearing (8, 16); one end of the belt (6) is connected with two sides of the sliding block fixing frame (22), the other end of the belt is connected with the rope hanger (7) along the small crown block wheel (5) and the large crown block wheel (4), and the sliding block fixing frame (22) is welded with the balance weight (15); sliding rails (19) are welded on two sides of the rack (11), pulleys (20) are symmetrically arranged on two sides of the sliding block fixing frame (22), and the pulleys (20) are in contact with the sliding rails (19).
The annular guide rail (14) is arranged in front of the driving screw (18) and the driven screw (10) and fixed at the top of the base (17) and the rack (11), and the annular guide rail is accurately aligned with the two screws (10 and 18); one end of the chain (12) is arranged in the thread grooves of the two screw rods (10, 18), and the other end is arranged in the guide groove of the annular guide rail (14).
The guide assembly (13) consists of a sliding block (21), a sliding block fixing frame (22) and a chain (12); the chain (12) is connected with the sliding block (21) through a pin shaft.
The sliding block (21) can move transversely on the sliding block fixing frame (22) when passing through the circular arc section of the annular guide rail (14).
The pitch of the chain (12) is the same as the thread pitch of the two screws (10, 18); the length of the chain (12) is larger than the semi-circular arc length of the annular guide rail (14).
The structure of the utility model is further described by combining the working principle:
1 circular telegram of motor is through 2 speed reductions of speed reducer, drive the rotation of initiative screw rod 18 through shaft coupling 3, initiative screw rod 18 drives driven screw rod 10 through the gear effect and carries out synchronous rotation, balanced heavy 15 is installed on two screw rods (10, 18), 6 one end of belt links to each other with slider mount 22 (slider mount 22 with balanced heavy 15 welding), the other end links to each other with polished rod eye 7 through big overhead traveling crane wheel 4 and little overhead traveling crane wheel 5, pulley 20 is installed at slider mount 22 both ends, slide along the slide rail 19 of welding on frame 11. The balance weight 15 converts the screw drive of the screws (10, 18) into the reciprocating linear motion in the vertical direction through the guide assembly 13, thereby realizing the purpose of oil extraction.
The working principle of the guide assembly is as follows:
let it be the down stroke of the pumping unit, i.e. the upward movement of the counterweight 15. One end of a chain 12 in a guide assembly 13 is arranged in a guide groove of an annular guide rail 14, one end of the chain 12 with a roller chain pin is arranged in a thread groove of a driven screw 10, the length of the chain 12 is greater than the length of a semicircular arc of the annular guide rail 14, the chain 12 is arranged on the driven screw 10 at the beginning, the chain 12 is driven by the rotation of the driven screw 10 to move upwards, and when an upper chain link of the chain 12 is separated from the driven screw 10, the chain 12 can continue to move upwards because a lower chain link is still in the driven screw 10; when the roller chain pin in contact with the thread groove is completely separated from the thread groove of the driven screw 10, the upper chain link of the chain 12 enters the thread groove of the driving screw 18 at the moment, the upper chain link of the chain 12 moves downwards under the driving of the driving screw 18, the roller chain pin in contact with the thread groove enters an arc section along the annular guide rail 14 at the moment, the sliding block 21 moves to the right end from the left end along the sliding block fixing frame 22, the roller chain pin enters the thread groove of the driving screw 18, and the balance weight 15 starts to move downwards under the driving of the driving screw 18 to drive the rope hanger 7 to move upwards. When the chain moves to the bottom of the driving screw 18, the previous movement is repeated, the chain 12 enters the driven screw 10 through the annular guide rail 14, the balance weight 15 moves upwards under the driving of the rotation of the driven screw 10, and the rope hanger 7 moves downwards to complete one cycle, so that one stroke of the pumping unit is realized.
Claims (5)
1. The utility model provides a novel double-screw rod pumping unit, mainly by motor (1), speed reducer (2), shaft coupling (3), big crown block wheel (4), little crown block wheel (5), belt (6), polished rod eye (7), deep groove ball bearing (8), gear (9), driven screw (10), frame (11), chain (12), direction assembly (13), ring rail (14), balanced heavy (15), deep groove ball bearing two (16), base (17), initiative screw (18), slide rail (19), pulley (20), slider (21), slider mount (22) are constituteed, its characterized in that: the motor (1) is connected with the speed reducer (2), the speed reducer (2) is vertically installed, and an output shaft of the speed reducer (2) is connected with the driving screw (18) through the coupler (3); the driving screw (18) is connected with the driven screw (10) through a gear (9), and the thread turning directions of the driving screw (18) and the driven screw (10) are the same; two ends of the driving screw rod (18) and the driven screw rod (10) are respectively provided with a deep groove ball bearing (8, 16); one end of the belt (6) is connected with two sides of the sliding block fixing frame (22), the other end of the belt is connected with the rope hanger (7) along the small crown block wheel (5) and the large crown block wheel (4), and the sliding block fixing frame (22) is welded with the balance weight (15); sliding rails (19) are welded on two sides of the rack (11), pulleys (20) are symmetrically arranged on two sides of the sliding block fixing frame (22), and the pulleys (20) are in contact with the sliding rails (19).
2. The novel twin-screw pumping unit of claim 1, wherein: the annular guide rail (14) is arranged in front of the driving screw (18) and the driven screw (10) and fixed at the top of the base (17) and the rack (11), and the annular guide rail is accurately aligned with the two screws (10 and 18); one end of the chain (12) is arranged in the thread grooves of the two screw rods (10, 18), and the other end is arranged in the guide groove of the annular guide rail (14).
3. The novel twin-screw pumping unit of claim 1, wherein: the guide assembly (13) consists of a sliding block (21), a sliding block fixing frame (22) and a chain (12); the chain (12) is connected with the sliding block (21) through a pin shaft.
4. The novel twin-screw pumping unit of claim 1, wherein: the sliding block (21) can move transversely on the sliding block fixing frame (22) when passing through the circular arc section of the annular guide rail (14).
5. The novel twin-screw pumping unit of claim 1, wherein: the pitch of the chain (12) is the same as the thread pitch of the two screws (10, 18); the length of the chain (12) is larger than the semi-circular arc length of the annular guide rail (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021929511.9U CN213297919U (en) | 2020-09-07 | 2020-09-07 | Novel double-screw oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021929511.9U CN213297919U (en) | 2020-09-07 | 2020-09-07 | Novel double-screw oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213297919U true CN213297919U (en) | 2021-05-28 |
Family
ID=76029650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021929511.9U Active CN213297919U (en) | 2020-09-07 | 2020-09-07 | Novel double-screw oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213297919U (en) |
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2020
- 2020-09-07 CN CN202021929511.9U patent/CN213297919U/en active Active
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