CN2106221U

CN2106221U - Self-walking oil pump

Info

Publication number: CN2106221U
Application number: CN 91219780
Authority: CN
Inventors: 马力行
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-12
Filing date: 1991-08-12
Publication date: 1992-06-03

Abstract

The utility model relates to a self-walking oil pumping machine. The self-walking oil pumping machine is an active reciprocating type long stroke oil pumping machine used for oil exploitation. The self-walking oil pumping machine is characterized in that a balance weight towing vehicle which is not only a power device, but also a balance device is connected with one end of a high-intensity rope cable, and the other end of the high-intensity rope cable bridges over a wheel on the top of a machine seat to be connected with a polished rod load. The balance weight towing vehicle automatically and to and fro walks from top to bottom on the guide rail of a machine frame behind the machine seat, and uses self power and gravity to draw and balance the up and down movement of the polished rod load to complete the pumping of a pump.

Description

Self-walking oil pump

The utility model is relevant with oil pumper, and is particularly relevant with long stroke pumping unit.

The promotion and application of long stroke pumping unit have brought huge economic benefit to oil industry.Long stroke pumping unit can be divided into two big classes, i.e. beam type and no beam type, beam type application four-bar mechanism, this kind oil pumper structure is not compact, heaviness, and appearance and size is big, the influence of adopting spin balancing to bring centrifugal force again, the impulse stroke of polished rod is variable motion, and the influence of acceleration is arranged again.

No beam pumping unit, can be divided into two kinds of Mechanical Driven and hydraulic-driven again, basic structure is that the rope that will connect weight equalizer and polished rod hangs on the wheel of pylon, motor drives polished rod by Mechanical Driven or hydraulic-driven and balance weight moves up and down, though type is different, its characteristics are respectively arranged, and are driven reciprocating beam-pumping units but all can reduce.

The purpose of this utility model is to develop a kind of with the active reciprocating type long stroke pumping unit of power set while as bascule and PRL reasonable combination.

For achieving the above object, the utility model provides a kind of self-propelled oil pumper.It comprises a base and is vertically mounted on the base and the anterior support of aiming at well head, the wheel that freely rotates is equipped with at the top of support, its special character is mounted in the frame of holding up at the support rear portion and leans on support, the upper end and the support of frame are fixed, lower end and base are fixed, the balance weight tractor of up and down reciprocatingly walking voluntarily is installed on the guide rail of frame, one end in high-strength flexible rope or broadband is connected with the balance weight tractor, the other end that strides across the wheel at support top is connected with PRL, therefore balance weight tractor traction PRL pumps, and sliding force and PRL along rack rail that the while is utilized himself weight again and produced constitute balance sysmte.

In the frame of self-propelled oil pumper, fixing gear ring and the pattern coaxial with gear ring are housed, guide rail is housed above the frame, their major axis center line is all on the symmetrical plane of frame.Be fixed with solar shaft on the symmetrical center line of the vehicle frame of balance weight tractor, and solar shaft is perpendicular to the plane at gear ring place, be installed on the planet axis on the planet carrier that solar shaft rotates, the roller that its part below planet carrier is equipped with planetary gear and freely rotates, roller is seated in the interior pattern of frame, make the engagement of planetary gear and gear ring, constituted planet reciprocator thus, this is an a kind of active reciprocator.Motor on the balance weight tractor is after slowing down, by be in the solar shaft coaxial position on reduction gearbox output shaft with moment of torsion, rotating speed passes to the planetary gear on the planet axis, because the constraint of pattern pair roller, making planetary gear make planet along gear ring rotates, driving the balance weight tractor by planet carrier initiatively up and down reciprocatingly walks along the guide rail on the frame, when the balance weight tractor is walked downwards voluntarily, the traction PRL moves upward, when the balance weight tractor is upwards walked voluntarily, send PRL to move downward, therefore self-propelled oil pumper is the reciprocating type long stroke pumping unit of active.The size of its active tractive force P equals M/r, and M is the moment of torsion of planetary gear output, and r is planetary pitch radius.Initiatively the pass between tractive force P and PRL is: P=(Fmax-Fmin)/2.Fmax is the polished rod peak load, and Fmin is the polished rod minimum load.

The sliding force and the PRL along rack rail that gravity produced of balance weight tractor self constitute balance sysmte, and the gravity G of balance weight tractor and the pass between PRL are G=(Fmax+Fmin)/2sin α, α is an angle between frame and level.The gravity size of balance weight tractor is with increasing, subtract balancing weight adjustment.

Self-propelled oil pumper is a reciprocating beam-pumping unit initiatively, its compact conformation, rationally, the machine shape size is little.

Below in conjunction with a description of drawings embodiment of the present utility model.

The self-propelled oil pumper side structure of Fig. 1 schematic diagram.

Fig. 2 pin tooth transmission planet reciprocator phantom drawing.

The self-propelled oil pumper schematic diagram of Fig. 3.

Fig. 1 has showed the structure of self-propelled oil pumper, the wheel ［ 13 ］ that freely rotates is equipped with at support ［ 17 ］ top that is fixed on the base, and frame ［ 10 ］ is holded up with level and become angle α, leans on support ［ 17 ］, the upper end is fixed with support, and lower end and base are fixed.

In frame ［ 10 ］, be fixed with pin wheel in the Long Circle ［ 8 ］ and with Long Circle in the coaxial Long Circle pattern ［ 9 ］ of pin wheel, its shape all is to connect two semicircles and the Long Circle that forms by two straightways, the symmetrical center line of their major axis center line and frame on same symmetrical plane, guide rail above the frame and symmetrical plane symmetry.Be installed with on the guide rail of frame ［ 10 ］ by planetary gear ［ 1 ］, planet carrier ［ 2 ］, vee-pulley transmission ［ 3 ］［ 5 ］, motor ［ 4 ］, reduction box ［ 6 ］, balancing weight ［ 7 ］, roller ［ 14 ］, vehicle frame ［ 15 ］, the balance weight tractor that wheel ［ 16 ］ etc. are formed, the solar shaft of planet carrier ［ 2 ］ is fixed on the position of symmetrical center line of vehicle frame ［ 15 ］, and solar shaft is perpendicular to the plane at pin wheel place in the Long Circle in the frame, planet carrier is connected with the solar shaft rolling bearing, the solar shaft of the output shaft of reduction box ［ 6 ］ and planet carrier ［ 2 ］ is on the coaxial position, and planet axis is connected with the planet carrier rolling bearing, the roller ［ 14 ］ that fixing planetary gear ［ 1 ］ is connected with the rolling bearing that is contained in the planet axis lower end is housed on the planet axis of planet carrier bottom.

Fig. 2 has shown the internal construction of the planet reciprocator of pin tooth transmission, and the roller of planet axis lower end ［ 14 ］ is seated in the interior Long Circle pattern ［ 9 ］ of frame, so planetary gear ［ 1 ］ and interior pin wheel ［ 8 ］ engagement of Long Circle.

The power of balance weight tractor is passed to reduction box ［ 6 ］ by motor through vee-pulley transmission ［ 5 ］, by reduction gearbox output shaft again through vee-pulley transmission ［ 3 ］, the moment of torsion rotating speed is passed to planetary gear ［ 1 ］, pin wheel ［ 8 ］ engagement in planetary gear and the Long Circle, because the Long Circle pattern is to the constraint of the roller on the planet axis ［ 14 ］, planetary gear ［ 1 ］ is rotated along the Long Circle planet that the sold inside the country crop rotation of Long Circle goes round and begins again, drive the balance weight tractor along the walking up and down reciprocatingly voluntarily of the guide rail on the frame by planet carrier.Balance weight tractor and PRL ［ 11 ］ couple together with wire rope ［ 12 ］, wire rope are hung on the wheel ［ 13 ］ at support top, therefore draw PRL ［ 11 ］ and move up and down.With increasing, subtract balancing weight ［ 7 ］, adjust the gravity size of balance weight tractor.

The speed that PRL rises, descends be the balance weight traction walk speed certainly, the balance weight tractor walk the planetary number of teeth, tooth pitch and the rotating speed decision of speed certainly by uniform rotation.Since its impulse stroke be planetary gear with Long Circle in the pin rack section of pin wheel mesh, so the speed of impulse stroke is at the uniform velocity.The size of impulse stroke is by the length decision of the pin rack section of pin wheel in the Long Circle.The size of the commutation stroke that the balance weight tractor rises, descends, the size of the commutation stroke of polished rod decline just, rising is decided by the pitch radius of the semicircle pin tooth at pin wheel two ends in the Long Circle and the size of planetary pitch radius.

In sum, the utlity model has following advantage:

1, self-walking oil pump is the reciprocating type long stroke pumping unit of active, uses the gravity of the balance weight tractor of up and down reciprocatingly walking voluntarily and decline and the rising that power removes balance and traction PRL, and its dynamic performance is superior.

2, this machine is rational in infrastructure, and is compact, appearance and size is little, so be easy to realize the long stroke oil pumping.

3, the power set balance weight tractor of this machine is bascule, can obtain desirable balance with increasing, subtract balancing weight, and is simple in structure, is convenient to adjust.

4, the impulse stroke of this machine with uniform velocity up and down reciprocatingly, the impact that no acceleration brings. And when the commutation stroke, main frame has the performance of commutation off-load. The reciprocating mechanism for planet that this machine is used is active reciprocator, does not therefore have the stop of driven reciprocator and the impact that locking phenomenon brings.

Claims

1, a kind of self-propelled oil pumper, comprise that one is vertically mounted on the base and the anterior support of aiming at well head, the support top is equipped with the wheel that freely rotates, it is characterized in that the frame of holding up that is installed in the support rear portion leans on support, the upper end and the support of frame are fixed, lower end and base are fixed, the balance weight tractor of up and down reciprocatingly walking voluntarily is housed on the guide rail of frame, one end in high-strength flexible rope or broadband is connected with the balance weight tractor, and the other end that strides across the wheel at support top is connected with PRL.

2, self-propelled oil pumper as claimed in claim 1, it is characterized in that being equipped with in the frame wherein fixing gear ring and the pattern coaxial with gear ring, and the symmetrical center line of their major axis center line and frame is on same symmetrical plane, and is fixed with the guide rail with the symmetrical plane symmetry on frame.

3, as claim 1 and 2 described self-propelled oil pumpers, it is characterized in that being contained on the balance weight tractor on the rack rail motor and reduction box are installed wherein, and the output shaft of reduction box is on the coaxial position with the solar shaft that is fixed on the symmetrical center line of vehicle frame, the solar shaft of vehicle frame is perpendicular to the plane at the gear ring place in the frame, planet carrier is installed on the solar shaft, can rotate around solar shaft, the other end of planet carrier is equipped with the planet axis of freely rotating, on the planet axis of planet carrier bottom, be fixed with planetary gear, on the planet axis of planetary gear bottom the roller that freely rotates is housed, roller is seated in the pattern in the frame, make the gear ring engagement in planetary gear and the frame, the output shaft of reduction box is connected by machine driving with the planet axis on planet carrier top, moment of torsion and rotating speed are passed to planetary gear, the planetary gear output torque is M, the active tractive force P=M/r of balance weight tractor then, r is the planetary gear pitch radius, initiatively the pass between tractive force P and PRL is P=(Fmax-Fmin)/2, Fmax is the polished rod peak load, and Fmin is the polished rod minimum load.

4, as claim 1 and 2 described self-propelled oil pumpers, it is characterized in that being installed in the balance weight tractor on the rack rail, sliding force and the PRL along the rack rail that utilize own wt to produce form balance sysmte, the gravity G of balance weight tractor and the pass between PRL are: G=(Fmax+Fmin)/and 2sin α, α is the angle between frame and level, and on the balance weight tractor, balancing weight is housed, the weight of balancing weight is not of uniform size, many specification configurations are adjusted the size of the gravity of required accurate balance weight tractor with increasing and decreasing balancing weight.