SU1344942A1 - Pumping unit - Google Patents

Abstract

The invention relates to the drive of borehole sucker-rod pumps and improves the reliability of the pumping unit by improving the driving dynamics and simplifying the design. Asynchronous electric motor (AE) 2 is arc-shaped. The counterweight 9 is located in the inner cavity of the rotor 7 AE 2 with the ability to move along one of the rotor spokes 10. The kinematic coupling of the rotor shaft 6 with the balance bar 5 placed on the support post 3 is carried out directly through the crank mechanism 8. The frequency of the swing of the balance bar can be achieved as constructively, by installing easily removable arc stators II, creating the necessary frequency; rotation of the rotor AE 2, and by adjusting directly the frequency of the supplied current. 1 il. sh (L with 16 with 4 4 CO 4 nd 17

Description

ten

25

I: K) Breaching is related to the drive of the ski sucker-rod pumps, in particular, to the pumping units, and can be used in the operation of eft wells.

The purpose of the invention is to increase reliability by improving the dynamics of the drive and simplifying the design.

The drawing shows the roll tool, a general view.

The rocking machine contains a base 1, mounted on the base 1 of an asynchronous electric motor 2 and a support post 3 with a bearing placed on it by means of a bearing 4 by a balance bar 5, which is connected to the shaft 6 of the rotor 7 of the electric motor 2 by a crank pinch. mechanism 8, as well as a counterweight 9 mounted with the possibility of movement. The asynchronous electric motor 2 is made arc-shaped and includes a rotor 7 made of electrical steel with spokes 10 mounted on the shaft 6, which is mounted by means of iodishers (not shown s) on removable kryizhah (not shown), and an arc stator 11 fixed to the casing 12 and having a three-phase coil 13, which is connected 1ets to an AC source (not shown). The short-circuited winding 1 5 of the rotor 7 of the arcing motor is made in the form of a squirrel cage, while the counterweight 9 p ;; i c- 35 is placed in the internal cavity of the rotor 7 with the ability to move along one of the spokes 10, i.e. there is a rotor balancing of the pumping unit. There may also be an installation of a counterweight, for example {b ,, on balance bar 5 (i.e. balancing balancing). The kinematic connection of the rotor 7 shaft 6 with the balance bar 5 is made directly through the curve-and-thrust-connecting rod mechanism 8. The rocking machine is also equipped with a braking device 17, the block 18 of which, if necessary, comes into contact with the rotor 7, which simultaneously performs the 50 function of the brake pulley.

The proposed CTanoK-Kaqajma works as follows.

When applying a three-phase voltage to the winding 15 of the arc stator 11

13449423

a magnetic magnetic field occurs, interacting with the rotor 7, which begins to rotate smoothly and evenly, driving the cranks of the crank mechanism 8 into rotation, and as a result, its connecting rods are set in motion. The head (not indicated) of the balancer 5 begins to move back and forth, the drive in motion associated with it - through the cable suspension to the yoke and the string of pump rods of the borehole pump (not indicated).

The frequency of rotation of the arc-core motor is determined from the ratio

thirty

X, n -c /,

20 where X is the current frequency of the arc stator;

P is the number of pairs of polarities; -x relative active angle of the arcs of the stator, expressed from 2/7.

Thus, the required frequency of oscillations of the balancer 5 can be achieved as DESIGNED by installing light-ground arc stators 1 1 5 possessing different o / and P and creating the required frequency of rotation of the rotor 7 of the electric motor, and by adjusting directly the frequency of the supplied current.

Claims (1)

Invention Formula A rocking machine containing a base, an asynchronous electric motor mounted on the base, and a support post placed on it by means of a bearing by a balance bar, which is kinematically connected to the rotor shaft of the electric motor, a crank mechanism, and a displaceable counterweight, differing from that, in order to increase reliability by improving dynamics and simplifying the design, the asynchronous electric motor is made arc-directional, the counterweight is mounted in the rotor, and the kinematic connection ala, with the balance of the rotor is made directly through the crank mechanism. VNIIPI Order Circulation 570 PRODUCTION-PO.GShGR. pr-tie, Uzhgorod, st. Project, 4 X, n -c /, where X is the current frequency of the arc stator; P is the number of pairs of polarities; -x relative active angle of the arcs of the stator, expressed from 2/7. Thus, the required frequency of oscillations of the balancer 5 can be achieved as DESIGNED by installing light-ground arc stators 1 1 5 possessing different o / and P and creating the required frequency of rotation of the rotor 7 of the electric motor, and by adjusting directly the frequency of the supplied current. Invention Formula A rocking machine containing a base, an asynchronous electric motor mounted on the base, and a support post placed on it by means of a bearing by a balance bar, which is kinematically connected to the rotor shaft of the electric motor, a crank mechanism, and a displaceable counterweight, differing from that, in order to increase reliability by improving dynamics and simplifying the design, the asynchronous electric motor is made arc-directional, the counterweight is mounted in the rotor, and the kinematic connection ala, with the balance of the rotor is made directly through the crank mechanism.