CN2377378Y - Quick assembling-and-disassembling adjustable lower bias balancing arm type pumping unit - Google Patents

Abstract

The utility model relates to a quick assembling-and-disassembling adjustable lower bias balancing arm type oil pumping machine for petroleum ore yards, which is composed of a balancing arm 1, a walking beam assembly 6, a balancing counter weight 17, etc. One end of the walking beam 6 is provided with the balancing arm 1, the lower end of the balancing arm 1 is provided with the balancing counter weight 17 which is connected with the walking beam 6 in a double-shaft form, and gears of a speed reducer 12 adopt full circular arc gears. The utility model has the advantages of stable running, small additional moving load, long stroke, small energy consumption, high comprehensive efficiency, and convenient balance regulation.

Description

Load and unload the adjustable arm-type pumping unit of inclined to one side balance down fast

The utility model relates to the adjustable arm-type pumping unit of inclined to one side balance down of quick loading and unloading that oilfield is used.

The core of conventional beam-pumping unit movement converter one by one is a kind of fourbar linkage simple in structure: comprise four hinged crank---the slotted link mechanisms that crank, connecting rod, trip fine strain of millet and support (together with base) are formed, because movement converter is simple in structure, so the motion converter loss of this class lever oil pumping machine is little, reliable operation, easy to maintenance, durable in use can adapt to the rugged environment and the working condition requirement in various oil fields.Its shortcoming is excessive energy consumption, and promptly the acceleration of horse head point suspension movement is bigger, and counterbalance effect is relatively poor, and efficient is lower, and volume is than big and body heaviness etc. when long stroke.On the basis of routine trip fine strain of millet formula pumping unit, many mutation have been produced, beam pumping units such as prefix type, out-phase type, gas balance type, two horse head type, six link type should be arranged mutually, although the balance mode form difference of these beam pumping units all is the one-level balance, promptly the cycle of crank angle is the periodic function of 2 π, there is not essential difference with conventional beam-pumping unit, and balance adjustment inconvenience, counterbalance effect is bad, so overall efficiency is low.

The speed reducer of beam pumping unit is used for realizing transmission of power and the deceleration from the power engine to the crank, flow deviding type two-stage double circular arc tooth wheel decelerator commonly used, and it partly is made up of casing, gear shaft, bearing and lubricated and sealing system etc.The required precision of its design, manufacturing, assembling is higher, must use special purpose machine tool and cutter processing, thereby manufacture cost is higher; And adopt soft tooth flank gear mostly, tooth face hardness generally is no more than HB310, and shock resistance is poor, and broken teeth, spot corrosion, wear phenomenon are serious.

The rotation amount of dialling of beam pumping unit is bigger, and loaded starting again, and therefore the starting torque of used motor wants big; The work characteristics of beam pumping unit is that the reducer output shaft moment of torsion periodically changes, generally will be in zero (or negative value) to two secondary undulations between the maximum value, so motor must have enough overload capacity in a jig frequency.The motor of conventional revolutional slip, its starting current is bigger, starting torque is lower, impact to electrical network and mechanical system during starting is big, in order to consider the startup factor, sometimes need to select bigger motor, this is not that steady running is necessary, and its mechanical property of the motor of conventional revolutional slip is harder.

The purpose of this utility model be to provide a kind of running steadily, little, stroke length of additional dynamic load, energy consumption, low, overall efficiency is high, balance adjustment is loaded and unloaded the arm-type pumping unit of inclined to one side balance easily fast adjustable time.

The utility model is achieved in that by balance arm 1, support 2, worktable 3, beam travelling supporting assembly 4, connecting rod ASSY 5, walking beam assembly 6, crossbeam assembly 7, horse head 8, rope hanger 9, crank pin 10, crank device 11, retarder 12, braking mechanism 13, chassis 14, electric machine 15, lose to carry and hold flushing device 16, counterweight 17, movable axis 18, axle bed 19, stationary axle 20, adjustment seat 21, regulating bolt 22 forms, support 2 is fixed on the chassis 14, be equipped with retarder 12 on the chassis 14 respectively, braking mechanism 13, electric machine 15, lose to carry and hold flushing device 16, worktable 3 is arranged at support 2 tops, beam travelling supporting assembly 4, there is horse head 8 walking beam assembly 6 ends, rope hanger 9 is arranged on the horse head 8, connecting rod ASSY 5 one ends are connected with walking beam 7, the other end is connected with crank device 11 by crank pin 10, walking beam 6 one ends have equalizer 1, there is counterweight 17 lower end of balance arm 1, the twin shaft form that is connected to of balance arm 1 and walking beam 6, between balance arm 1 and the walking beam 6 movable axis 18 is arranged, axle bed 19 and adjustment seat 21, regulate bolt 22, axle bed has stationary axle 20 for 19 li.

Counterweight 17 can be fixedly connected with being connected of balance arm 1, can be that the static pulley formula is flexible coupling, and also can be hinged.

It both can be movable that balance arm 1 is connected with the twin shaft form of walking beam 6, also can fix.

Advantage of the present utility model is: adopted walking beam underlying mass balance, that is: the balancing mass of pumping unit is arranged on the below of walking beam line of action (the hinged center of crossbeam and walking beam is with the on line at beam travelling supporting center), hinged by balance arm and walking beam, its marvellous part is, underlying quality can be worked as two quality and use: one at beam travelling tail end, produces the once balance moment of torsion; Another is on the perpendicular bisector of walking beam, produce the secondary balancing moment of torsion, on the basis of one-level balance, set up the secondary balance, be that counter balance torque is that cycle of crank angle is the periodic function of π, connecting rod and horse head are positioned at the front of support, and side suspension a unexistent balance arm of existing beam pumping unit behind the walking beam.Can the round-the-clock running in the oil field for a long time, also have running steadily.Characteristics such as additional dynamic load is little, stroke is long, energy consumption is low, overall efficiency is high, balance adjustment is convenient, sturdy reliable, balancing mass moves down the pumping unit machine gravity is moved down, and has cancelled the rotation big crank, the support force-bearing situation is greatly improved, and complete machine turns round, and more balance is reliable; Rational in infrastructure, adopted the prefix type structure, the big pivot angle of short walking beam, the walking beam pivot angle reaches 78 °, increases 30% than traditional machine, walking beam length and stress reduce 30%, use small crank instead, cancelled the rotation big crank, reduced the load of connecting rod, crank pin, speed reducer axle and bearing, the cancellation dais, the speed reducer position reduces; Widely applicable, now designed and trial-produceed types such as 16,14,12,10,8,5 successfully, stroke 6m-3m illustrates that two-stage balanced trip fine strain of millet formula pumping unit is applicable to any hole condition, but seriation; The lifting acceleration is little.Stroke (m) * jig frequency (min-1)=48 o'clock, suspension point promotes acceleration and is no more than 2Ms ^-2Compare with conventional beam-pumping unit, descend 30%.Adopt two-stage balanced beam pumping unit can improve the life-span of underground equipments such as sucker rod; Part can be good, because adopted inclined to one side mass balance under front-located mode and the trip fine strain of millet, characteristics such as the big pivot angle of short trip fine strain of millet, small crank, retarder location are low are arranged, force-bearing situation is greatly improved, and it is little to promote acceleration, running is steadily harmonious, reflection pumping unit performance overall target---noise is less, after testing: 14 type machine running at full capacity noises are 70dB (A) only; Energy efficient owing to be equilibrated at the existing one-level counter balance torque of conversion counter balance torque that produces ox on the crank under the walking beam partially, has the secondary counter balance torque again, and balance and energy-saving effect increase substantially.Theory analysis shows (by the detection of dynamic data acknowledgement), and two-stage balanced beam pumping unit has good performance index.

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

Fig. 2 is balance arm, walking beam structural representation.

Below in conjunction with accompanying drawing the utility model is described further:

The utility model is by balance arm 1, support 2, worktable 3, beam travelling supporting assembly 4, connecting rod ASSY 5, walking beam assembly 6, crossbeam assembly 7, horse head 8, rope hanger 9, crank pin 10, crank device 11, retarder 12, braking mechanism 13, chassis 14, electric machine 15, lose to carry and hold flushing device 16, counterweight 17, movable axis 18, axle bed 19, stationary axle 20, adjustment seat 21, regulating bolt 22 forms, support 2 is fixed on the chassis 14, be equipped with retarder 12 on the chassis 14 respectively, braking mechanism 13, electric machine 15, lose to carry and hold flushing device 16, worktable 3 is arranged at support 2 tops, beam travelling supporting assembly 4, there is horse head 8 walking beam assembly 6 ends, rope hanger 9 is arranged on the horse head 8, connecting rod ASSY 5 one ends are connected with walking beam 7, the other end is connected with crank device 11 by crank pin 10, walking beam 6 one ends have equalizer 1, there is counterweight 17 lower end of balance arm 1, the twin shaft form that is connected to of balance arm 1 and walking beam 6, between balance arm 1 and the walking beam 6 movable axis 18 is arranged, axle bed 19 and adjustment seat 21, regulate bolt 22, axle bed has stationary axle 20 for 19 li.

Counterweight 17 can be fixedly connected with being connected of balance arm 1, can be that the static pulley formula is flexible coupling, and also can be hinged.

Balance arm 1 is connected to the twin shaft form of walking beam 6: can be movable, also can fix.Wherein one with walking beam hinged, divide two kinds of forms, the one, at the walking beam end face axle bed is set, axis suspension is connected with walking beam in axle bed; The one, at walking beam side perforate edge cover, axle passes supporting sleeve with walking beam is hinged, and other one fits together with walking beam, is connected with fixing dual mode with activity with balance arm, and one side plays a supportive role, and plays corrective action on the other hand.

Adopted the energy-conservation actuator of CDJT series pumping unit variable-pole multi-speed, formed by YDCH variable-pole multi-speed superelevation revolutional slip threephase asynchronous and JDK electric control box.

The gear of retarder 12 adopts the wholecircle gear with curved teeth.Adopted wholecircle gear with curved teeth speed reducer, its technical characterstic is: replace various traditional profiles of tooth with wholecircle curved tooth shape, made full use of the theory of engagement in power dividing and the few tooth difference.Its main playing by driving wheel, follower, input shaft, output shaft, eccentric shaft, wholecircle gear with curved teeth, pin support roller, pin output wheel, compositions such as rolling bearing.

Quadratic crank mechanism---form by crank, connecting rod, walking beam and support.Wherein crank is packed in the termination of reduction unit output shaft, one end and the crank of connecting rod are movably hinged, the other end is movably hinged by crossbeam and walking beam, walking beam and cantilever tip are movably hinged by beam travelling supporting, during pumping unit work, crank rotates around output shaft, and drivening rod, crossbeam, walking beam are done oscillating motion, walking beam is swung in vertical guide around bearing core shaft again, and the rotation motion of speed reducer is changed to pumping of polished rod.

Walking beam--horse head assembly, horse head is contained in trip fine strain of millet front end, and polished rod is aimed at the well head central position all the time when guaranteeing oil pumping.

Balance arm assembly---carrying balancer weight will descend inclined to one side balancing mass and walking beam to couple together, and the size by increase and decrease balancing mass change counter balance torque obtains counterbalance effect preferably.

Lose to carry and hold flushing device---adopt wooden unit to absorb and cushion and carry pumping unit inertial force and the rear portion ballast box gravity that produces because of pumping unit loses.

Braking device and brake safety installations: the effect of braking device is behind the pumping unit supply disconnecton, pumping unit is stopped operating immediately or rests on the arbitrary position.The brake safety installations is that being perfectly safe when shutting down and installing is provided with, and to be on the safe side, shuts down the back except that the tension brake, also should tighten the stem nut of extremely stopping to hem type, also lock dog should be put into brake hub outer rim breach to internal expansion type.

Rope hanger---connect horse head and polished rod, the assurance polished rod is made straight line motion up and down reciprocatingly along the well head center.

The adjusting of balance only need increase and decrease equilibrium block in tandem-driving bogie, but then filling stone and sand during the mining site operation.

Claims (5)

1. load and unload the adjustable arm-type pumping unit of inclined to one side balance down fast, by balance arm (1), support (2), worktable (3), beam travelling supporting assembly (4), connecting rod ASSY (5), walking beam assembly (6), crossbeam assembly (7), horse head (8), rope hanger (9), crank pin (10), crank device (11), retarder (12), braking mechanism (13), chassis (14), electric machine (15), lose to carry and hold flushing device (16), counterweight (17), movable axis (18), axle bed (19), stationary axle (20), adjustment seat (21), regulating bolt (22) forms, support (2) is fixed on the chassis (14), be equipped with retarder (12) on the chassis (14) respectively, braking mechanism (13), electric machine (15), lose to carry and hold flushing device (16), worktable (3) is arranged at support (2) top, beam travelling supporting assembly (4), there is horse head (8) walking beam assembly (6) end, rope hanger (9) is arranged on the horse head (8), connecting rod ASSY (5) one ends are connected with walking beam (7), the other end is connected with crank device (11) by crank pin (10), it is characterized in that: walking beam assembly (6) one ends have balance arm (1), there is counterweight (17) lower end of balance arm (1), balance arm (1) is connected to the twin shaft form with walking beam assembly (6), between balance arm (1) and the walking beam (6) movable axis (18) is arranged, axle bed (19) and adjustment seat (21), regulate bolt (22), there is stationary axle (20) axle bed (19) lining.

2. the arm-type pumping unit of inclined to one side balance under quick loading and unloading according to claim 1 are adjustable, it is characterized in that: counterweight (17) can be fixedly connected with being connected of balance arm (1), can be that the static pulley formula is flexible coupling, and also can be hinged.

3. the arm-type pumping unit of inclined to one side balance under quick loading and unloading according to claim 1 are adjustable is characterized in that: balance arm (1) can be movable with the twin shaft Connecting format of walking beam assembly (6), also can fix.

4. the arm-type pumping unit of inclined to one side balance under quick loading and unloading according to claim 1 are adjustable is characterized in that: the gear of retarder (12) adopts the wholecircle gear with curved teeth.

5. the arm-type pumping unit of inclined to one side balance under quick loading and unloading according to claim 1 are adjustable, it is characterized in that: the energy-conservation actuator of CDJT series pumping unit variable-pole multi-speed of employing, form by YDCH variable-pole multi-speed superelevation revolutional slip threephase asynchronous and JDK electric control box.

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