CN201187436Y

CN201187436Y - Straight-line reciprocating energy-saving oil pumping machine

Info

Publication number: CN201187436Y
Application number: CNU2007200945904U
Authority: CN
Inventors: 杨博
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-14
Filing date: 2007-11-14
Publication date: 2009-01-28
Anticipated expiration: 2017-11-14

Abstract

The utility model relates to a straight line reciprocating energy-saving oil pumping unit and belongs to an oil pumping unit. A vertical frame is fixedly connected with a base; a controlling cabinet is arranged on the base; a driving fixed pulley device, an electric motor and a supporting bracket are installed at the top end of the vertical frame; a supporting wheel is installed on the supporting bracket; a movable pulley block is arranged in front of the vertical frame; one end of a wire cable is fixed on the supporting bracket, and the other end thereof passes through a pulley of the movable pulley block, and then moves around the supporting wheel, so as to be intertwined on a driving fixed pulley and finally connected with a balancing block; the balancing block is positioned inside the vertical frame. The straight line reciprocating energy-saving oil pumping unit has the advantages that the structure is novel, and the adoption of a movable pulley block for hanging slips leads to a decrease in the required power by several times on the basis that the hoisting capacity remains unchanged; the oil pumping unit further has the advantages of better energy-saving effect, dynamic speed regulation, simple operation and reliable operation, thereby not only saving energy but also improving work efficiency.

Description

The linear reciprocation energy-saving pumping unit

Technical field

The utility model belongs to a kind of novel energy-conserving pumping unit, is applicable to that the mechanical type of oilfield recovers the oil.

Background technique

At present, domestic some oil field block needs the energy-saving pumping unit of long stroke low jig frequency.The conventional pumping unit majority can not meet the demands, and simultaneously there is certain narrow limitation in the balance of conventional pumping unit in the past, and major defect is that energy consumption is big, and stroke is subjected to structural limitations, can't increase; Jig frequency can't dynamic adjustments; There is the sealing situation of difficult in retarder.Researched and developed the linear reciprocation energy-saving pumping unit based on above-mentioned situation.

Summary of the invention

The utility model provides a kind of linear reciprocation energy-saving pumping unit, the problem that the energy consumption that conventional pumping unit exists is big, stroke is limited to solve, jig frequency can't dynamic adjustments, there is the sealing difficulty in retarder.The technological scheme that the utility model is taked is: stand 9 is fixedlyed connected with base 1, control cabinet 10 is arranged on the base 1, stand 9 tops are equipped with and are driven fixed pulley 6, motor 7 and supporting frame 3, supporting wheel 4 is housed on the supporting frame 3, and there is running block 2 stand 9 fronts, and wire rope 5 one ends are fixed on the supporting frame 3, the other end passes the pulley of running block 2, walk around supporting wheel 4 again and be wrapped on the driving static pulley 6, connect with equilibrium block 8 at last, equilibrium block 8 is positioned at the inside of stand 9.

Drive fixed pulley 6 in the utility model and be made up of static pulley group and big belt pulley, the static pulley group is coaxial with big belt pulley, and big belt pulley connects with motor 7 usefulness belts.

Drive 5 of wire rope in the utility model and on driving fixed pulley 6, twine half-turn.

The utility model utilizes the movable pulley principle, polished rod load is reduced by half, reduce required drive, utilize control cabinet to make motor carry out clockwise and anticlockwise regularly, motor slows down to drive by belt and drives the fixed pulley rotation, and to the friction of wire rope wire rope is moved back and forth by driving static pulley, and then drive running block and make polished rod do linear reciprocating motion, and can carry out that any jig frequency is regulated, the rational Match up-down stroke time.The power of motor output drives wire rope and running block by driving fixed pulley, forms polished rod and does straight line motion up and down reciprocatingly, when upstroke, motor is rotated in the forward, and equilibrium block does work to polished rod by running block with driving fixed pulley, finishes the pumping of downhole pump plunger.During down stroke, the motor counter-rotating drives fixed pulley and with polished rod equilibrium block is done work, and finishes the return of oil pump plunger piston.By electron controls technology, motor is carried out dynamic speed adjustment, realize fast slow pumping work down on the pumping unit.This is just meeting the operating mode of pumping well, can also improve the stressed situation of sucker rod simultaneously.

The utility model has the advantages that: novel structure, adopt running block suspention slips, guarantee to have reduced required drive exponentially under the constant situation of lifting capacity.Dynamically adjust motor speed, but step-less adjustment pumping unit jig frequency.Can dynamically regulate the upper and lower stroke speed of pumping unit and improve pump efficiency.Pumping unit has been carried out soft start, and inrush current reduces significantly, avoids pumping unit is produced excessive mechanical shock, prolongs service life of equipment.Have multinomial protective functions such as overvoltage, under-voltage, overload, short circuit, phase shortage, electric leakage and stall, more accurately control and protect motor reliably.Have higher energy-saving effect, dynamic speed adjustment, simple to operate, reliable operation, not only energy saving has improved working efficiency again.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

Stand 9 is fixedlyed connected with base 1, control cabinet 10 is arranged on the base 1, stand 9 tops are equipped with and are driven fixed pulley 6, motor 7 and supporting frame 3, supporting wheel 4 is housed on the supporting frame 3, and there is running block 2 stand 9 fronts, and wire rope 5 one ends are fixed on the supporting frame 3, the other end passes the pulley of running block 2, walk around supporting wheel 4 again and be wrapped on the driving static pulley 6, connect with equilibrium block 8 at last, equilibrium block 8 is positioned at the inside of stand 9.

Its power transmission system characteristics are: motor 7 outputting rotary powers, slow down by belt, power is passed to driving fixed pulley 6, driving fixed pulley 6 moves by frictional force drive wire rope 5, wire rope 5 the other ends also are subjected to the pulling force of equilibrium block 8 simultaneously, like this power is delivered to running block 2, running block 2 drives polished rod and does reciprocating linear motion.

Driving fixed pulley 6 is made up of static pulley group and big belt pulley, the static pulley group is coaxial with big belt pulley, and big belt pulley connects with belt with motor, twines half-turn wire rope 5 on the static pulley group, one end of wire rope 5 connects equilibrium block 8, and the other end connects running block 2.

During work, motor 7 back and forth rotates, and power is delivered to by belt drive on the fixed pulley 6, drives fixed pulley 6 drive wire rope 5 and moves, and makes running block 2 drive polished rods and makes straight line motion up and down reciprocatingly; Simultaneously, equilibrium block 8 is done moving linearly up and down reciprocatingly under the effect of wire rope 5, because its deadweight is to driving the opplied moment that fixed pulley 6 produces, all the time the moment with 6 generations of 2 pairs of drivings of running block fixed pulley is opposite, therefore plays balanced loaded effect.How much can adjusting at any time of equilibrium block according to actual conditions.

Claims

1, a kind of linear reciprocation energy-saving pumping unit, stand (9) is fixedlyed connected with base (1), control cabinet (10) is arranged on the base (1), it is characterized in that: stand (9) top is equipped with and is driven fixed pulley (6), motor (7) and supporting frame (3), supporting wheel (4) is housed on the supporting frame (3), there is running block (2) stand (9) front, wire rope (5) one ends are fixed on the supporting frame (3), the other end passes the pulley of running block (2), walking around supporting wheel (4) again is wrapped on the driving static pulley (6), connect with equilibrium block (8) at last, equilibrium block (8) is positioned at the inside of stand (9).

2, linear reciprocation energy-saving pumping unit according to claim 1 is characterized in that: drive fixed pulley (6) and be made up of static pulley group and big belt pulley, the static pulley group is coaxial with big belt pulley, and big belt pulley connects with belt with motor (7).

3, linear reciprocation energy-saving pumping unit according to claim 1 is characterized in that: wire rope (5) is only driving upward winding half-turn of fixed pulley (6).