CN202990977U - Tower-type double cylinder push-pull hydraulic long stroke pumping unit - Google Patents

Tower-type double cylinder push-pull hydraulic long stroke pumping unit Download PDF

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CN202990977U
CN202990977U CN 201220379013 CN201220379013U CN202990977U CN 202990977 U CN202990977 U CN 202990977U CN 201220379013 CN201220379013 CN 201220379013 CN 201220379013 U CN201220379013 U CN 201220379013U CN 202990977 U CN202990977 U CN 202990977U
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drive
fixed pulley
counterweight
frame
oil
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CN 201220379013
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周国峰
周爽
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周国峰
乔新生
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Abstract

The utility model provides a tower-type double cylinder push-pull hydraulic long stroke pumping unit which is a mechatronic product and used for exploiting of petroleum and coal bed methane. The tower-type double cylinder push-pull hydraulic long stroke pumping unit is composed of a host and a hydraulic station. The host comprises a rack (1), a drive oil cylinder (17), a drive oil cylinder (18), a movable pulley block (3), an oxbow (5), a balancing weight fixed pulley block (6), an end portion drive fixed pulley block (7), a top portion drive fixed pulley block (10), a top cap (8), a sucker rod drive rope (9), a balancing weight basket drive rope (11), a tripod (12), a balancing weight rope (13), a fixing support guide frame (14), a fastening rope wheel frame (15), a balancing weight basket (16) and the like, and further comprises a movable support guide frame which moves together with the movable pulley block (3) and a guide rail matched with the movable support guide frame. The tower-type double cylinder push-pull hydraulic long stroke pumping unit is characterized in that the two drive oil cylinders (17,18) on the left and on the right are both single acting oil cylinders, the two oil cylinders extend out in turn and work in a push-pull mode. One of the drive oil cylinders drives the sucker rod to rise and forms an upstroke. The other oil cylinder drives the balancing weight basket to rise and forms a down stroke. The tower-type double cylinder push-pull hydraulic long stroke pumping unit has the advantages of being high in efficiency, simple in structure, and convenient to maintain.

Description

Tower twin-tub is recommended hydraulic long stroke well pumping unit
Technical field:
A kind of electromechanical integrated product that relates to machinery, hydraulic pressure, electronic control technology is for long stroke oil pumping (water) equipment of oil extraction in oil field and coal-bed gas exploitation.
Technical background:
At present, the oil field generally uses " three take out " (oil pumper, sucker rod, oil well pump) mode to carry out oil producing operation, and oil pumper used mostly is beam pumping unit (being commonly called as " machine of kowtowing "), and the coal mining coal bed gas is this equipment of many employings also.
Along with the continuous decline of old filed liquid level, and the exploitation in deep reservoir, high viscosity oil field, the lower pump degree of depth is more and more darker, and required lifting force is increasing.This just makes " machine of kowtowing " three energy efficiencies of taking out under system condition more and more lower.
Secondly, the oil pumping throw of pump is many, and its active length is generally 3 meters left and right and have now under " machine of kowtowing " condition more than 5 meters, and the wearing and tearing of pump concentrate in a shorter zone, makes oil well pump wear out failure and have to rise to ground and overhaul prematurely.
Also have, sucker rod is worked under the fluctuating load effect, and its, number of times was certain in application life, and the jig frequency number in the unit interval is fewer, and the service time of sucker rod is just longer.
Given this, field produces needs the oil pumper of long stroke, low jig frequency, large suspension point power.People have released various forms of long stroke pumping units in recent years, as the traction motor oil pumper, and three-dimensional oil sucking machine of compound permanent magnet motor, combination number-controlled oil pumper etc., mostly these new pumping units are electrical machinery commutation intelligence pumping unit, and control system is comparatively complicated, often will use converter technique.Only have tower type hydraulic long stroke well pumping unit without motor commutation, but the gravitational equilibrium of this machine is incomplete, also will be aided with the hydraulic press accumulation of energy.
Summary of the invention:
The present invention is intended to the tower type hydraulic long stroke well pumping unit patent is improved and improved, and provides that a kind of efficient is high, simple in structure, the hydraulic long stroke well pumping unit of dependable performance, complete equipilibrium.
The tower twin-tub that the present invention provides is recommended hydraulic long stroke well pumping unit, as shown in Figure 1.Shown in Figure 1 is only its host machine part, and another part is that the Hydraulic Station of power is provided for main frame; Host machine part comprises frame (1), drive cylinder tube (2), running block (3), drive cylinder piston rod (4), ox is gripped (5), counterweight fixed pulley group (6), the end drives fixed pulley group (7), top cover (8), sucker rod drives wire rope (9), top drive fixed pulley group (10), the counterweight basket drives wire rope (11), tripod (12), counterweight armored rope (13), fixed support leading truck (14) is fastened rope sheave frame (15), counterweight basket (16) etc.; Also have in addition the movable supporting leading truck that servo-actuated assembly pulley moves together and the guide rail that is mated; It is characterized in that: two drive oil cylinder (17,18) be positioned at the inside of frame (1), drive cylinder piston rod (4) and drive cylinder tube (2) down up, driving cylinder piston rod (4) fixes and driving cylinder tube (2) motion, the upper end that drives cylinder piston rod (4) is fixed on the soffit of top cover (8), running block (3) is arranged on the bottom that drives cylinder tube (2), plays motion with one; Top cover (8) is positioned at the end face of frame (1) and placed in the middle, and the upper surface of top cover (8) is installed two top drive fixed pulley groups (10), and soffit is installed and fixed two upper ends that drive cylinder piston rods (4); Two tripods (12) are positioned at the both sides, top of frame (1), use bearing pin to be connected with frame (1); The outer end of tripod (12) upper surface is equipped with three assembly pulleys, and two assembly pulleys that wherein are positioned at the outside are counterweight fixed pulley groups (6), and an assembly pulley in the middle of being positioned at is that the end drives fixed pulley group (7); The right-hand member of counterweight armored rope (13) is connected with counterweight basket (16), the other end to up, walk around counterweight fixed pulley group (6) left lateral on right tripod, afterwards walk around counterweight fixed pulley group (6) on left tripod descending, be connected to ox at last and grip above (5); The left end that sucker rod drives wire rope (9) is gripped (5) and is connected with ox, the other end to up, walk around end driving fixed pulley group (7) right lateral on left tripod, afterwards walk around the top drive fixed pulley group in the left side (10) descending, again walk around the running block in the left side (3) up, be connected to one, the left side at last and fasten above rope sheave frame (15); The right-hand member that the counterweight basket drives wire rope (11) is connected with the counterweight basket, the other end to up, walk around end on right tripod drive fixed pulley group (7) left lateral, afterwards walk around the top drive fixed pulley group in the right (10) descending, again walk around the running block in the right (3) up, at last be connected on the right of one fasten above rope sheave frame (15).
Tower twin-tub is recommended in hydraulic long stroke well pumping unit, it is open type hydraulic system that its main frame provides the Hydraulic Station of power, what be connected with main frame mainly contains three oil pipes, wherein two for pressure oil pipe, be connected respectively to two and drive oil cylinders (17,18) oil-in, another root is that drain mast (24) is used for reclaiming the hydraulic oil that leaks, and hydraulic schematic diagram as shown in Figure 2, is an open type hydraulic system.High-voltage oil liquid is discharged in driven by motor oil pump (21) rotation, and high-voltage oil liquid enters left driving oil cylinder (18) (or right driving oil cylinder (17)) through three position four-way directional control valve (19).The cylinder barrel (2) of left driving oil cylinder (18) is descending, and when running into approach switch (23), this switch will send signal, makes three position four-way directional control valve (19) commutation by control system; The commutation rear right drives the cylinder barrel (2) descending (the up retraction of cylinder barrel (2) of left driving oil cylinder (18) simultaneously) of oil cylinder (17), when it runs into approach switch (22), this switch will send signal, by control system, three position four-way directional control valve (19) is commutated again; So circulation endlessly.Unloading overflow valve (20) time plays the safeguard protection effect in two oil cylinders normal operations, when pump start and oil pump running and oil cylinder play Unloading Effect when not working.Leak into the hydraulic oil that drives oil cylinder (17,18) epicoele and flow back to fuel tank by drain mast (24).
Description of drawings:
The tower twin-tub of Fig. 1 is recommended hydraulic long stroke well pumping unit (main frame)
1-frame 2-drives cylinder tube 3-running block 4-and drives cylinder piston rod 5-ox and grip 6-counterweight fixed pulley group 7-end and drive fixed pulley group 8-top cover 9-sucker rod and drive rope 10-top drive fixed pulley group 11-counterweight basket and drive rope 12-tripod 13-counterweight rope 14-fixed support leading truck 15-and fasten rope sheave frame 16-counterweight basket
The hydraulic schematic diagram of Fig. 2 the present invention Hydraulic Station used
The left approach switch 24-of the left driving oil cylinder of the right driving oil cylinder of the 17-18-19-three position four-way directional control valve 20-unloading overflow valve 21-right approach switch 23-of oil pump 22-drain mast
The specific embodiment:
Rectangular steel tube is welded into the frame (1) of hollow; Rectangular steel tube (or channel-section steel) is welded into tripod (12); Steel plate cuts and is welded into top cover (8), ox is gripped (5), fixed support leading truck (14), fastens the support of rope sheave frame (15), each assembly pulley etc.; Rectangular steel pipe is the main counterweight basket that is welded into.use the lower margin pressing plate that frame (1) is fixed on concrete pedestal, use bearing pin two tripods (12) to be connected to the both sides, top of frame (1), on the upper surface of each tripod (12), three assembly pulleys are installed in the outer end, wherein two of both sides assembly pulleys are counterweight assembly pulley (6), middle one drives fixed pulley group (7) for the end, use bolt top cover (8) to be installed between two parties the upper surface of frame (1), on the upper surface of top cover (8), bilateral symmetry is installed two top drive fixed pulley groups (10), two drive oil cylinder (17, 18) be positioned at the inside of frame (1), bar up, cylinder down, the top bilateral symmetry of two-piston bar (4) is installed on the soffit of top cover (8), a running block (3) is respectively installed in the bottom of two cylinder barrels (2).According to counterweight armored rope (13) and two driving wire rope (9,11) put on shown in Figure 1, the exact connect ion ox is gripped and the counterweight basket.It is outer suitably local that Hydraulic Station is placed in frame, two main oil pipes are connected respectively to two and drive oil cylinder (17,18) oil-in, promoting two cylinder barrels stretches out descending in turn, draw ox by driving wire rope (9,11) and gripping (5) (sucker rod) or counterweight basket (16) rising.Due to the stroke amplification of running block (3), the stroke that ox is gripped (5) or counterweight basket (16) is the twice of oil cylinder stroke.The determining positions of two approach switchs (22,23) the length of commutation position and stroke.
Tower twin-tub is recommended the course of work of hydraulic long stroke well pumping unit:
Three position four-way directional control valve (19) is when being in meta, and two oil-ins that drive oil cylinder (17,18) all are closed, and two piston rods (4) that drive oil cylinder are in the state of maintaining static, and this moment, sucker rod can stay in the optional position; When three position four-way directional control valve (19) is in left position, left driving oil cylinder (18) oil-feed makes the cylinder barrel (2) of left driving oil cylinder stretch out descending, and the retraction of the cylinder barrel (2) of right driving oil cylinder (17) oil extraction, right driving oil cylinder is up, grips (5) (sucker rod) by the transmission ox of wire rope and rises and counterweight basket (16) decline; When three position four-way directional control valve (19) is in right position, right driving oil cylinder (17) oil-feed makes the cylinder barrel (2) of right driving oil cylinder stretch out descending, and the retraction of the cylinder barrel (2) of left driving oil cylinder (18) oil extraction, left driving oil cylinder is up, and ox is gripped (5) (sucker rod) decline by transmission counterweight basket (16) rising of wire rope.When coming downwards to certain position, approach switch (22) (or 23) sends signal when the cylinder barrel (2) that drives oil cylinder, makes three position four-way directional control valve (19) commutation.
The performance characteristics of this machine:
1, suspension point power large (more than can reaching 280kN), stroke long (more than 8 meters), jig frequency low (can lower than 0.5 beats/min).Stroke, jig frequency is stepless adjustable.
2, abdicate the well workover space by the rotation of tripod, need not the complete machine displacement
3, balancing is easy, can reach the current balance type degree more than 95%.
4, motor does not commutate, and positive and negative half cycle load is approximate identical, motor constant load Unidirectional.
5, the adapted power of motor is little, is 1/3rd left and right of conventional " machine of kowtowing ".
6, lightweight, floor space is little.
7, simple in structure, reliable operation, for ease of maintenaince.

Claims (2)

1. a tower twin-tub is recommended hydraulic long stroke well pumping unit, and its integral body forms by main frame with for it provides the Hydraulic Station two large divisions of power; Host machine part comprises frame (1), drive cylinder tube (2), running block (3), drive cylinder piston rod (4), ox is gripped (5), counterweight fixed pulley group (6), the end drives fixed pulley group (7), top cover (8), sucker rod drives wire rope (9), top drive fixed pulley group (10), the counterweight basket drives wire rope (11), tripod (12), counterweight armored rope (13), fixed support leading truck (14) is fastened rope sheave frame (15), counterweight basket (16) etc.; Also have in addition the movable supporting leading truck that servo-actuated assembly pulley moves together and the guide rail that is mated; It is characterized in that: two drive oil cylinder (17,18) be positioned at the inside of frame (1), drive cylinder piston rod (4) and drive cylinder tube (2) down up, driving cylinder piston rod (4) fixes and driving cylinder tube (2) motion, the upper end that drives cylinder piston rod (4) is fixed on the soffit of top cover (8), running block (3) is arranged on the bottom that drives cylinder tube (2), plays motion with one; Top cover (8) is positioned at the end face of frame (1) and placed in the middle, and the upper surface of top cover (8) is installed two top drive fixed pulley groups (10), and soffit is installed and fixed two upper ends that drive cylinder piston rods (4); Two tripods (12) are positioned at the both sides, top of frame (1), use bearing pin to be connected with frame (1); The outer end of tripod (12) upper surface is equipped with three assembly pulleys, and two assembly pulleys that wherein are positioned at the outside are counterweight fixed pulley groups (6), and an assembly pulley in the middle of being positioned at is that the end drives fixed pulley group (7); The right-hand member of counterweight armored rope (13) is connected with counterweight basket (16), the other end to up, walk around counterweight fixed pulley group (6) left lateral on right tripod, afterwards walk around counterweight fixed pulley group (6) on left tripod descending, be connected to ox at last and grip above (5); The left end that sucker rod drives wire rope (9) is gripped (5) and is connected with ox, the other end to up, walk around end driving fixed pulley group (7) right lateral on left tripod, afterwards walk around the top drive fixed pulley group in the left side (10) descending, again walk around the running block in the left side (3) up, be connected to one, the left side at last and fasten above rope sheave frame (15); The right-hand member that the counterweight basket drives wire rope (11) is connected with the counterweight basket, the other end to up, walk around end on right tripod drive fixed pulley group (7) left lateral, afterwards walk around the top drive fixed pulley group in the right (10) descending, again walk around the running block in the right (3) up, at last be connected on the right of one fasten above rope sheave frame (15).
2. tower twin-tub according to claim 1 is recommended hydraulic long stroke well pumping unit, be open type hydraulic system for it provides the Hydraulic Station of power, what be connected with main frame mainly contains three oil pipes, wherein two for pressure oil pipe, be connected respectively to two and drive oil cylinders (17,18) oil-in, another root are that drain mast (24) is used for reclaiming the hydraulic oil that leaks.
CN 201220379013 2012-08-02 2012-08-02 Tower-type double cylinder push-pull hydraulic long stroke pumping unit Active CN202990977U (en)

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Application Number Priority Date Filing Date Title
CN 201220379013 CN202990977U (en) 2012-08-02 2012-08-02 Tower-type double cylinder push-pull hydraulic long stroke pumping unit

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CN 201220379013 CN202990977U (en) 2012-08-02 2012-08-02 Tower-type double cylinder push-pull hydraulic long stroke pumping unit
CA2802876A CA2802876C (en) 2012-08-02 2012-12-10 Tower-style double cylinder hydraulic oil pumping unit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909217A (en) * 2016-06-22 2016-08-31 杜殿起 Fully automatic hydraulic oil pumping unit with double cylinders connected in parallel

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Publication number Priority date Publication date Assignee Title
CN105464633A (en) * 2016-01-05 2016-04-06 中国民航大学 Scissors fork type extended-range pumping unit
CN105782174A (en) * 2016-05-11 2016-07-20 慕泽跃 Energy feed type constant deceleration hydraulic station
CN107965296B (en) * 2017-11-02 2020-04-28 东北石油大学 Self-propelled double-row cluster well pumping unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909217A (en) * 2016-06-22 2016-08-31 杜殿起 Fully automatic hydraulic oil pumping unit with double cylinders connected in parallel

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CA2802876C (en) 2015-05-12

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