CN2344540Y

CN2344540Y - Positioning balanced beam pumping unit

Info

Publication number: CN2344540Y
Application number: CN 98236411
Authority: CN
Inventors: 王建英
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-05
Filing date: 1998-01-05
Publication date: 1999-10-20
Anticipated expiration: 2008-01-05

Abstract

The utility model discloses a positioning balanced beam pumping unit, which comprises a balancing device and a beam. The utility model is characterized in that balancing device the balancing device is composed of a balancing weight which is hung at the tail part of the beam or on a cross beam. After realized, compared with the prior art, the utility model has the advantages that the work load of power equipment becomes more equalizing, the service power of the power equipment is reduced from 30% to 40%, the manufacturing cost and the using cost of the complete appliance are reduced, etc.

Description

A kind of positioning balance formula beam-pumping unit

The utility model relates to a kind of oil exploration equipment, particularly relates to beam pumping unit.

At present, beam pumping unit has obtained very using widely in the China's oil recovery process as a kind of sucker rod pumping equipment.This oil pumper is to be made of support, sucker rod, polished rod eye, horse head, walking beam, rack shaft, connecting rod, crossbeam, reductor, motor, base, crank and bascule; Support is a pyramidal structure spare, and it stands on the ground; Walking beam is a bar type structure spare, and it is articulated in the support upper end by rack shaft; Sucker rod is the axle class rod member of a shape such as piston, and its upper end is connected on the horse head by polished rod eye; Crossbeam is " _ " shape member, and its upper end is articulated in beam travelling tail end by the crossbeam coupling spindle; The upper end of two connecting rods is hinged on both sides, crossbeam lower end respectively, and its lower end is hinged on the outer end of two rod-type cranks respectively by connecting axle, and the other end of this two crank is fixedly connected at the output shaft two ends of reductor; The reductor power shaft connects with a motor output shaft; Motor, reductor are fixedly mounted on the base respectively; Bascule is by being fixedly connected on crank, closing the several tons of balance weights that weigh and constitute, this balance weight can along crank axially do the finite quantity displacement, for adjustment.

The course of work of this oil pumper is: behind the motor start-up, this motor drives walking beam around its hinge swing with support by reductor, crank, connecting rod, and makes sucker rod upper and lower mobile, and moving past journey on the sucker rod is oil pumping process, and folding process is that sky moves.

The purpose that this oil pumper is provided with bascule is in order to make it to produce a trimming moment, in order to overcoming the loading moment of sucker rod one end, so that the operating load of motor, reductor is minimized and keeps in balance.

The major defect of this oil pumper is: 1, the size of trimming moment is a variable quantity, when crank is in vertical position, balance weight all act on the speed reducer output shaft from gravity, thereby, trimming moment by its generation is zero, and the loading moment of motor, reductor reaches maximum value simultaneously; When crank is horizontal, then reach maximum value by balance weight from the trimming moment that gravity produces, simultaneously the loading moment of motor, reductor is for obtaining minimum value, and the cyclically-varying of loading moment has worsened the condition of work of motor, reductor on the one hand, has reduced its application life; Also improve the fixed power of motor, reductor on the other hand, caused mechanical energy, waste of electric energy, improved the manufacturing and the use cost of equipment.2, motor also instantaneous electric phenomenon can occur under the loading moment effect of above-mentioned periodicity, variation significantly, thereby the motor power supply network is suffered damage.3, balance weight from gravity, draw-bar pull and by the inertia force that balance weight produced in the motion, each power of centrifugal force make a concerted effort to directly act on reductor and the supporting seat thereof, force sectional dimension, the appearance and size of component such as reductor, supporting seat to increase, this just constitutes another key factor that improves the complete machine manufacturing cost.

The purpose of this utility model is for people provide a kind of operating load of motor, reductor that can make balanced more, and can reduce the positioning balance formula beam-pumping unit of motor, reductor use power significantly.

The purpose of this utility model is to realize like this, it comprises bascule, be articulated in the walking beam of support upper end, be connected in crossbeam, the motor of this beam travelling tail end portion, be characterized in that the balance weight on fast beam travelling tail end portion or the crossbeam constitutes described bascule by being suspended on.

Compared with the prior art the utility model has the following advantages after realizing: 1, because the gravity that balance weight produced vertically acts on the walking beam afterbody, like this, the stress condition of component such as reductor, supporting seat is improved, thereby the cross section of its manufactured materials is reduced, appearance and size reduces, and then also helps reducing the manufacturing cost of complete machine.2, in the walking beam motion process, because balance weight big or small constant from gravity is little with the variable in distance of walking beam fulcrum, thereby trimming moment changes less, this makes the loading moment equilibrium of motor on the one hand, and oil pumper operates steadily, the application life of favourable prolongation equipment; On the other hand, also make the use power of reductor, motor reduce 30-40%, thereby reduce device fabrication and use cost.3, because motor is worked, do negative work (i.e. generating) phenomenon under balanced outer load effect, improved the operation of power networks quality so can eliminate motor fully.4, significantly reduced cost of crude oil production, the prior art oil pumper uses the 45KW motor, and ten thousand yuan of the annual about 15-16 of the electricity charge reduce after 30%, are ten thousand yuan of 10.5-10.2.

Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is an another kind of structural representation of the present utility model.

Fig. 3 is the third structural representation of the present utility model.

Fig. 4 is that the A of Fig. 1 is to view.

Fig. 5 is that the A of Fig. 1 is to view.

Fig. 6 is a kind of structural representation of balance weight.

Fig. 7 is the another kind of structural representation of balance weight.

Embodiment 1:

As shown in Figure 1, the utility model by bascule, support 10, rack shaft 17, walking beam 16, horse head 18, polished rod eye 19, sucker rod 20, crossbeam 14, reductor 6, and reductor power shaft 5 joining two-speed motors 11, and the crank 8 that is fixedly connected of speed reducer output shaft 7, connecting rod 12, the base 21 that is connected between crank and the crossbeam form.

Present embodiment compared with prior art, sectional dimension, the appearance and size of removing crank 8 and base reduce; Reductor, motor power (output) reduce, and beyond the set-up mode difference of bascule, the structure of other each component forms,, specification, manufactured materials, manufacturing process, mounting method be all identical.

In the prior art, model is that the rated power of motor of the beam-pumping unit institute adapted of CYJ10-3.6-53HB is that the rated power of 45KW, reductor is 43KW, the input torque of this reductor is that 175Kg.m, output torque are 5300Kg.m, the corresponding power of the two-speed motor of the utility model institute adapted that face is identical with this beam-pumping unit function only is 26KW, the power of reductor is 25.3KW, the input torque of this reductor is 102Kg.m, and output torque is 3077Kg.m.

The utility model also can adopt two-speed motor, the smaller power numerical value in two kinds of power of this motor output as above, this power is used for the normal operating conditions that the loading moment that is produced by suspending point loading and the trimming moment that is produced by balance weight all exist; Another kind of bigger power then is used for loading moment and does not exist, thereby the interim operating mode that increases of motor operating load, as installations such as sucker rod, oil well pump, debugging, maintenance operating mode are installed.

Under a kind of working condition in back, when being the common electric machine of 26KW, then need balance weight is taken off temporarily as if the above-mentioned power of employing, so that alleviate the motor operating load, guarantee its smooth startup.

Bascule in the present embodiment, constitute by balance weight 1, displacement control frame 2, bearing 3, fixture 4, balance weight 1 can have Fig. 6, two kinds of form of structure shown in Figure 7, it is to be made of link 22 that is welded with shape and the some blocks of metal derbies 23 that are fixedly mounted on this link, and this link upper articulation is installed bearing 3; Its profile can have Fig. 4, two kinds of forms shown in Figure 5; The form of structure of displacement control frame 2 also has two kinds, and respectively as Fig. 4, shown in Figure 5, the former is made of the setting of along continuous straight runs spacing and two groups of risers being positioned at two connecting rods, 12 outsides, and these two groups of riser rigidity are connected in the crossbeam two ends; The latter is provided with by the along continuous straight runs spacing, and is positioned at two single risers formations of two connecting rods, 12 inboards, and this two risers rigidity is connected on the crossbeam; Make arc-shaped slot respectively on this each riser; Be connecting between balance weight and the displacement control frame to pack into and realize in this notch, thereby make balance weight 1 hang on beam travelling tail end portion indirectly by crossbeam by the bearing 3 that makes both sides, hinged balance weight top.The length setting of above-mentioned arc-shaped slot should guarantee to leave the gap between its length dimension both ends of the surface and bearing 3 cylindricals when the frame swing is controlled in displacement to extreme position.

Embodiment 2:

As shown in Figure 2, present embodiment is compared with embodiment 1, and its difference only is the structure shape difference of bascule.This bascule is to be made of balance weight 1, transverse axis 24, bearing 3, set bolt 25, and transverse axis 24 is fixed on the crossbeam 14 by four U-shaped set bolts 25; Balance weight 1 profile (also can be used the balance weight of prior art) as shown in the figure, and its upper end is shaped on through hole, and it is articulated on the transverse axis 24 by this through hole and bearing 3, thereby makes balance weight hang on beam travelling tail end portion indirectly by crossbeam.

Embodiment 3:

As shown in Figure 3, present embodiment is compared with preceding two embodiment, and difference also only is the form of structure difference of bascule.Present embodiment is applicable to prior art is transformed into scrap build process of the present utility model that this bascule is to be made of balance weight 15, set bolt 26, Connection Block 27, bearing and support 28; Bearing and support 28 rigidity are connected in beam travelling tail end, and balance weight is to utilize the balance weight that uses in the prior art, and Connection Block lower end and balance weight are fixedly connected, and its upper end is hingedly mounted in the dead eye on the support by connecting axle.Thereby make balance weight directly hang on the tail end of walking beam.

Claims

1, a kind of positioning balance formula beam-pumping unit, comprise bascule, be articulated in the walking beam of support upper end, the crossbeam that is connected in this beam travelling tail end portion, motor, it is characterized in that described bascule is made of the balance weight that is suspended on described beam travelling tail end portion or the crossbeam.

2, a kind of positioning balance formula beam-pumping unit according to claim 1 is characterized in that described motor is a two-speed motor.