CN2929174Y - Coal layer gas pumping machine - Google Patents

Abstract

The utility model relates to a pumping unit, in particular to a novel energy-saving variable speed pumping unit and comprises a machine base and a bay, wherein a pulley, a broach, a balancing unit, a power transmitting means, a gearbox and a polish rod adapting device are arranged on the bay, and a motor on the machine base, which is characterized in that a gear shifting box and a reversing arrangement are additionally arranged before the gearbox on the machine base, and travel control switches for the upper center and the lower center are arranged on the upper end and the lower end of the bay. The utility model lowers the power of the motor, saving electricity without changing the original production, reduces the frequency of the friction between elements, extending the life duration, and lengthens the time of swabbing, reducing the mobility speed of the formation fluid and sand production. Utilizing the prior large diameter oil-well pump, the utility model can adjust the output volume by adjusting the travel and the frequency of stroke, without replacing too many elements, and the exploitation cost saved by applying the pumping unit can be invested into the oil wells with low production volume.

Description

Novel energy-conserving vary velocity type oil pumper

One, technical field:

The utility model relates to a kind of oil pumper, particularly relates to a kind of novel energy-conserving vary velocity type oil pumper.

Two, background technology:

At present pumping production is the main means of domestic and international oilfield exploitation, and quite a few oil field exist oil well many, yield poorly, moisture high problem.And the style of the oil pumper that uses at present and of a great variety; comprise oily girder-like oil pump and vertical oil-pumping machine; wherein; beam pumping unit is because it is simple in structure; durable; maintenance cost is lower and always in occupation of the leading position of oil pumper; but its efficient is not high; therefore vertical oil-pumping machine has appearred; its main feature is a long stroke; low jig frequency; but most of required powers are higher; and two maximum costs are workover treatment and electricity consumption in recovering the oil; in oil recovery process, do to change oil well pump on because the oil well productivity situation changes through regular meeting; sometimes since every day sucker rod several thousand times in addition up to ten thousand times move up and down cause wearing and tearing between wearing and tearing between sucker rod and oil pipe and oil well pump piston and cylinder body, and cause pump detection and workover.In addition, for most of Φ 70 following oil well pumps, the general requirements pump oils external diameter of pipe greater than the oil well pump piston diameter, in this case, no matter the oil well yield what state all needs to spur the whole fluid column in the oil pipe in each upstroke motion, expended sizable electric weight.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provides a kind of and reduce power of motor, reduces the friction number of times of each parts, the novel energy-conserving vary velocity type oil pumper that increases the service life.

Its technical scheme is: comprise support and frame, on frame, be provided with pulley, reel, bascule, actuating unit, reduction box and polished rod linkage, on support, be provided with motor, it is characterized in that: set up gearbox and reversing arrangement before the reduction box on described support, respectively be provided with the lower dead center travel control switch at the two ends up and down on the described frame.

Described reversing arrangement comprises reverse box and up-down stroke friction clutch.

The described outside of going up the lower dead center travel control switch also was respectively equipped with stroke guard rows journey switch.

Big belt pulley is contained on the reverse box, on two gear shafts of reverse box reverse clutch is housed all, the upstroke clutch connects gearbox by the commutation pull bar, gearbox power connects reduction box, the output shaft band of reduction box reel, pulling actuating unit, pull-up polished rod are finished the upstroke motion; In the down stroke process, the down stroke clutch also connects an other axle by the commutation pull bar, by speed change, does not pass to reduction box, makes the reduction box counter-rotating, finishes the down stroke motion.

Described actuating unit can be the wire rope transmission, also can be gear drive, can also combine for gear drive and wire rope transmission.

The beneficial effects of the utility model are: guarantee to have reduced power of motor, saves energy under the constant prerequisite of former output; Reduce the friction number of times of each parts, increase the service life; Because pumping time lengthening reduces the stratum liquid flow velocity, also reduce and shake out; Can also utilize existing large-diameter extraction oil pump, regulate discharge capacity, need not change too much accessory by adjusting stroke, jig frequency; By using this kind oil pumper to reduce cost of winning, can drop into the lower oil well of exploitation output again.

Four, description of drawings:

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

Accompanying drawing 2 is lateral views of the present utility model;

Accompanying drawing 3 is vertical views of the present utility model;

Accompanying drawing 4 is structural representations of down-hole of the present utility model part;

Accompanying drawing 5 is structural representations of communtation protection of the present utility model;

Accompanying drawing 6 is structural representations of transmission of the present utility model and speed change.

Five, the specific embodiment:

In conjunction with the accompanying drawings 1,2,3,4,5 and 6, the utility model will be further described:

Its technical scheme is: comprise support and frame; on frame, be provided with pulley, reel, bascule, actuating unit, reduction box and polished rod linkage; on support, be provided with motor; it is characterized in that: set up gearbox and reverse box and up-down stroke friction clutch before the reduction box on described support; respectively be provided with the lower dead center travel control switch at the two ends up and down on the described frame, the outside of last lower dead center travel control switch also was respectively equipped with stroke guard rows journey switch.

In addition, big belt pulley is contained on the reverse box, on two gear shafts of reverse box reverse clutch is housed all, the upstroke clutch connects gearbox by the commutation pull bar, gearbox power connects reduction box, the output shaft band of reduction box reel, and pulling actuating unit, pull-up polished rod are finished the upstroke motion; In the down stroke process, the down stroke clutch also connects an other axle by the commutation pull bar, by speed change, does not pass to reduction box, makes the reduction box counter-rotating, finishes the down stroke motion.

Whole device can be divided into six parts: one, frame and support part; Two, transmission and commutation variable part; Three, balance portion; Four, safety guard; Five, producing fluid level checkout gear; Six, sucker rod and pump is connected.Mainly comprise: frame 1, support 2, pull bar 3; pulley spindle bearing 4, pulley 5; 6, connect tandem-driving bogie and polished rod motion wire rope 8; 10; reel 9, commutation pull bar 11, tandem-driving bogie 12; reduction gearbox output shaft is connected 13 with reel, reduction box 14, reduction box hand-operated brake 15; gearbox 16, upstroke friction clutch 17, down stroke friction clutch 18; reverse box 19, big belt pulley 20, V belt 21; motor 22 is crossed stroke protection upper stroke switch 23, crosses stroke protection lower stroke switch 24; frame stay cord and draw ring 25, electric appliance control box 26, motor belt wheel cover 27; pulley cover 28, crossbeam 29, production tree 30; top dead centre travel control switch 31, lower dead center travel control switch 32, Stroke Control pulling wire rope 33; polished rod 34, sleeve pipe 35, oil pipe 36; sucker rod 37; tapping switch 38, self-rotary on-off connector 39 draws back tapping switch lever 40; ultra-long-stroke Special subsurface pump 41, fuel sucking pipe 42.

To be introduced respectively below: (one) frame and support part: frame 1 is applicable to that stroke is 8 meters a situation, by 80 angle steel welding fabrications, by i iron, channel-section steel welding fabrication, support 2 is two body structures with frame, connect by pull bar 3, assemble with 12 MR screws.Upper rack is equipped with two groups of pulleys 5,6, and the one group of pulley in front has four, and the back has two for one group.Respectively there are two pulleys to be used for moving up and down of tandem-driving bogie wherein, also have two pulleys to be used for reel pulling polished rod 34 in the pulley that the front is a group and move up and down, and be provided with pulley spindle bearing 4.Upper rack four fillet welding are connected to four stay thimbles, are used for fixing backguy.(2) transmission and commutation variable part: transmission device is this key position of applying for a patent, by changing the transmission rule, realizes the change in stroke, jig frequency, pump footpath, the portion of time of down stroke is moved in the upstroke, change the gearratio of upstroke, increased moment of torsion, reduced power.(3) balance portion: balance portion is to be used for the weight of balance sucker rod under liquid buoyancy.In traditional walking beam machine, the angle difference between crank and the balance weight, the effect of balance are also just different.And in this transmission system, tandem-driving bogie is a rectilinear motion up and down, and counterbalance effect is consistent at any time.Wire rope hauls polished rod by two assembly pulley one ends on the frame, and an end hauls tandem-driving bogie.When down stroke, use tensiometer to measure the pulling force of down stroke, thereby determine the weight of required balance case, to reach the optimum balance effect.This tandem-driving bogie uses steel part, concrete to make, and specification has 3.5 tons, 5 tons, 6 tons three kinds, can adorn little balance weight in the case, adjust balance after, from outside to watch be exactly a casing.(4) safety guard: safety guard is divided into two parts: the one, and the overcurrent protection device is to be used for protecting oil pumper, avoids occurring under unexpected situation overload.When the electric current of motor exceeded rated current, overload protective device is outage automatically, quits work; The 2nd, the stroke protective device, at the upper and lower stop of tandem-driving bogie two travel switches are housed respectively all, when tandem-driving bogie operation surpasses travel switch, can cut off the electricity supply automatically, out of service.(5) producing fluid level checkout gear: well head is equipped with the producing fluid level checkout gear, and this device can be measured the situation of change of down-hole producing fluid level at any time when oil pumper is worked, and adjusts jig frequency according to the actual conditions of producing fluid level, thereby changes theoretical displacement, improves pump efficiency.(6) being connected of sucker rod and pump: native system uses Φ 83 and 95 two kinds of oil well pumps of Φ.

In addition, the course of work between transmission and commutation variable part and the assembly is described in detail as follows:

960 rev/mins of motor 22 revolutions, 50HZ, 380X/220Y.Motor 22 pulling Type B V belts are passed to big belt pulley 20, and the rotation of big belt pulley makes two involutory gear bands in the reverse box up-down stroke friction clutch 17,18 rotating disk both directions and rotates.When upstroke friction clutch 17 in conjunction with the time, power is passed to the gear drive that hangs up properly selected gear in the gearbox.Adopted the flywheel-type shaft coupling of bicycle in the centre of the power shaft of output shaft of gear-box and reduction box, it can only unidirectional transmission, and two reels 9 are equipped with at two of the output shaft of reduction box 14.In the upstroke process, reel 9 rotates by wire rope 10 pulling wire rope 8 and six pulleys 5,6, make 8,10 pullings of four wire rope finish stroke upwards, and this moment, tandem-driving bogie 12 is done balance exercise downwards, the weight of balance sucker rod under the liquid buoyancy effect.When the lower plane of tandem-driving bogie was depressed top dead centre travel control switch 31, commutation pull bar 11 the upstroke friction clutch 17 of combination separately stopped upstroke.In the down stroke process, commutation pull bar 11 is in conjunction with down stroke friction clutch 18, and the down stroke driving-chain wheel shaft that is contained in the gearbox is given in transmission, and axle head is equipped with a sprocket wheel.The sprocket wheel of a flywheel-type is housed in the middle part of reduction box power shaft, it can only transmission the power of counter-rotating down stroke, make the reduction box counter-rotating.At this moment polished rod, reel and tandem-driving bogie pulling crossbeam 29 and polished rod 34 move downward simultaneously, and tandem-driving bogie 12 moves upward.When the last planar top of tandem-driving bogie plays lower dead center travel control switch 32, finish the motion of down stroke.Afterwards, the down stroke clutch separately begins the upstroke motion of following one-period, thereby makes oil pumper finish the periodic motion of upper and lower stroke.

This pumping unit system has reduced jig frequency but has not reduced discharge capacity, adopts 8 meters strokes, 1 time/minute jig frequency also bigger than the theoretical daily fluid production rate of 3 meters strokes of Φ 56mm oil well pump, 7 times/minute jig frequencies as the big pump of Φ 95mm, can satisfy on-the-spot requirement to discharge capacity fully.

Claims (5)

1, a kind of novel energy-conserving vary velocity type oil pumper, comprise support and frame, on frame, be provided with pulley, reel, bascule, actuating unit, reduction box and polished rod linkage, on support, be provided with motor, gearbox and reduction box, it is characterized in that: set up gearbox and reversing arrangement before the reduction box on described support, respectively be provided with the lower dead center travel control switch at the two ends up and down on the described frame.

2, novel energy-conserving vary velocity type oil pumper according to claim 1, it is characterized in that: described reversing arrangement comprises reverse box and up-down stroke friction clutch.

3, novel energy-conserving vary velocity type oil pumper according to claim 1 is characterized in that: the described outside of going up the lower dead center travel control switch also was respectively equipped with stroke guard rows journey switch.

4, according to claim 1,2 or 3 described novel energy-conserving vary velocity type oil pumpers, it is characterized in that: big belt pulley is contained on the reverse box, on two gear shafts of reverse box reverse clutch is housed all, the upstroke clutch connects gearbox by the commutation pull bar, gearbox power connects reduction box, the output shaft band of reduction box reel, and pulling actuating unit, pull-up polished rod are finished the upstroke motion; In the down stroke process, the down stroke clutch also connects an other axle by the commutation pull bar, by speed change, does not pass to reduction box, makes the reduction box counter-rotating, finishes the down stroke motion.

5, novel energy-conserving vary velocity type oil pumper according to claim 4, it is characterized in that: described actuating unit can be the wire rope transmission, also can be gear drive, can also combine for gear drive and wire rope transmission.

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