CN2635912Y

CN2635912Y - Straight line motor driven long stroke oil suction machine

Info

Publication number: CN2635912Y
Application number: CN 03261041
Authority: CN
Inventors: 王兴林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-08
Filing date: 2003-08-08
Publication date: 2004-08-25
Anticipated expiration: 2013-08-08

Abstract

The utility model relates to a long strike pumping unit driven by a linear motor, which can mainly solve the problems of the prior pumping unit including complex structure, short service life of steel cable and inconvenient unit moving for downhole workover, and is characterized in that: on a pulley (1) which is fixed at a platform (2) on the top of a frame (4), a rubber layer (16) is attached on through a plurality of ring shaped spacer plates; the both ends of a steel cable (3) are separately connected through the pulley (1) with a beam hanger (8) and a motor mover (6) with a clump weight (9); the bottom of the frame (4) is fixed through a bracket (14) on an upper base plate with a plurality of rolling wheels (12) and lead screws. The utility model is characterized by simple structure, long service life of steel cable, convenient unit moving for downhole workover, low production cost, and saving time and manpower.

Description

The long stroke pumping unit that a kind of linear electric motors drive

Technical field:

The utility model relates to used oil pumper in the oil recovery field, oil field, the long stroke pumping unit that especially a kind of linear electric motors drive.

Background technology:

In the oil recovery technique of oil field, the power source of pumping unit generally is to adopt electric rotating machine and linear electric motors, electric rotating machine is by reduction box, crank connecting link or other rod member mechanism etc., rotatablely moving of engine changed into the linear reciprocating motion of sucker rod and oil well pump, realize the oil suction and the oil extraction process of oil well pump, exist bulky, complex structure, big energy-consuming, the shortcoming of underground work inconvenience; And linear electric motors drive oil pumper, be that linear electric motors are connected and driving sucker rod and oil extraction pump, reduced reduction box, crank connecting link or other rod member mechanism, Chinese patent application number is 01204055 to disclose a kind of " oil pumper that linear electric motors drive ", the top of having put down in writing rail brackets in the scheme of this technology is fixed with pulley, wire rope is fixed on electric mover top by pulley one end, the other end is connected with oil pumping polish rod in the well mouth of oil well device, the electric mover lower end is connected with counterweight wire rope one end, the counterweight wire rope other end is connected balancing weight by the counterweight pulley of a frame bottom pulley and a top of the trellis, though this technology is alleviated to some extent to the shortcoming of electric rotating machine, but unreasonable part is arranged still on the structure, pulley has seven, wherein six place on the platform, increase the load of platform, machine volume is bigger, the structure more complicated, big energy-consuming, therefore there is hidden danger, in order to prevent the skidding of wire rope and pulley, outside wire rope, be added with rubber layer, be squeezed the simultaneously effect of power and frictional force of rubber layer, application life is short, and base is fixed on the diji, during the telephone-moving operation, base to be loaded onto roller and just can be moved with very heavy propping, underground work telephone-moving inconvenience wastes time and energy, the cost of production height.

The utility model content:

In order to overcome the deficiency of existing oil pumper complex structure, wire rope weak point in application life and underground work telephone-moving inconvenience, the long stroke pumping unit that the utility model provides a kind of linear electric motors to drive, that this oil pumper has is simple in structure, wire rope long service life and underground work telephone-moving characteristics easily.

The technical scheme that the utility model adopted is: the long stroke pumping unit that these linear electric motors drive comprises frame, platform, electric mover and motor stator, electric mover is by have a sudden inspiration the mutually motor stator of frame inboard of roller, intrinsic pulley on the platform on frame top passes through some roads toroidal membrane intrinsic rubber layer at interval on the pulley; Wire rope is by the electric mover of continuous respectively polished rod eye in pulley two ends and band balancing weight; The bottom of frame is fixed on the upper bed-plate with several scroll wheels and leading screw by support.

Above-mentioned dividing plate is three roads; Upper bed-plate is fixed on the lower bottom base by jackscrew; Scroll wheel is four.

The beneficial effects of the utility model: it is by dividing plate fixed interval rubber layer on pulley that these linear electric motors drive oil pumper, frictional force and extruding force have been reduced, prolonged the application life of wire rope, the directly continuous electric mover of balancing weight, cancelled six pulley structures, simplified the structure of whole oil pumper, the electric mover shift motion is 3～6 meters, be long stroke pumping unit, high efficiency; Upper bed-plate is fixed on the lower bottom base of band scroll wheel and leading screw, and telephone-moving is convenient, and time saving and energy saving, cost of production is low.

Description of drawings:

Accompanying drawing 1 is a structure sectional view of the present utility model;

Accompanying drawing 2 is A-A structure sectional views of accompanying drawing 1 middle pulley 1.

1-pulley among the figure, 2-platform, 3-wire rope, 4-frame, 5-motor stator, 6-electric mover, 7-roller, 8-polished rod eye, 9-balancing weight, 10-upper bed-plate, 11-lower bottom base, 12-scroll wheel, 13-leading screw, 14-support, 15-dividing plate, 16-rubber layer.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in FIG., the long stroke pumping unit that these linear electric motors drive comprises frame 4, platform 2, electric mover 6 and motor stator 5, electric mover 6 is by have a sudden inspiration the mutually motor stator 5 of frame 4 inboards of roller 7, and electric mover can move up and down along motor stator 5 by roller 7; Intrinsic pulley 1 on the platform 2 on frame 4 tops, pass through three road toroidal membranes 15 intrinsic rubber layer 16 at interval on the pulley 1, three road toroidal membranes 15 are made of some small baffles, wire rope 3 can place in the four road grooves of three road dividing plates, 15 formations, better played anti-skidding effect, abrasion resistance is good, has prolonged the application life of wire rope 3; Wire rope 3 is by the electric mover 6 of continuous respectively polished rod eye 8 in pulley 1 two ends and band balancing weight 9, balancing weight 9 directly links to each other with electric mover 6, has cancelled six pulley structures, has simplified overall structure, electric mover 6 moves up and down and drives moving up and down of sucker rod, finishes oil pumping process; The bottom of frame 4 is fixed on the upper bed-plate 10 with four scroll wheels 12 and leading screw 13 by support 14, increased the steadiness of whole mechanism, upper bed-plate 10 is fixed on the lower bottom base 11 by jackscrew, when needs underground work, from lower bottom base 11, rotational lead screw 13 can be removed pithead position with oil pumper to jackscrew with upper bed-plate 10 tops.

Because this linear electric motors drive oil pumper and adopted the balancing weight 9 that directly links to each other below the electric mover, have cancelled six pulleys, have simplified the structure of whole oil pumper, it is 3～6 meters that electric mover 6 moves up and down stroke, is long stroke pumping unit, high efficiency; Rubber layer 16 places outside the pulley 1, has prolonged the application life of wire rope 3, and whole telephone-moving is convenient, and time saving and energy saving, safe and reliable, cost of production is low.

Claims

1, a kind of long stroke pumping unit of linear electric motors driving, comprise frame (4), platform (2), electric mover (6) and motor stator (5), electric mover (6) is by roller (7) the inboard motor stator (5) of frame (4) of having a sudden inspiration mutually, it is characterized in that: the platform (2) on frame (4) top is gone up intrinsic pulley (1), and pulley (1) is gone up by some roads toroidal membranes (15) interval intrinsic rubber layer (16); Wire rope (3) is by the electric mover (6) of continuous respectively polished rod eye (8) in pulley (1) two ends and band balancing weight (9); The bottom of frame (4) is fixed on the upper bed-plate (10) with several scroll wheels (12) and leading screw (13) by support (14).

2, the long stroke pumping unit of a kind of linear electric motors driving according to claim 1, it is characterized in that: dividing plate (15) is three roads.

3, the long stroke pumping unit of a kind of linear electric motors driving according to claim 1, it is characterized in that: upper bed-plate (10) is fixed on the lower bottom base (11) by jackscrew.

4, the long stroke pumping unit of a kind of linear electric motors driving according to claim 1, it is characterized in that: scroll wheel (12) is four.