CN201159157Y

CN201159157Y - Loop chain type double-weight counterbalance oil pumping machine

Info

Publication number: CN201159157Y
Application number: CNU2007200941763U
Authority: CN
Inventors: 王立新
Original assignee: 王立新
Current assignee: Shengli Fanland Petroleum Equipment Co., Ltd.
Priority date: 2007-08-06
Filing date: 2007-08-06
Publication date: 2008-12-03
Anticipated expiration: 2017-08-06

Abstract

A ring chain type double counterweight pumping unit belongs to the technical field of oil exploitation machinery, in particular to a pumping unit which not only is adaptable to general oil fields, but also is suitable to exploit thick oil. The pumping unit is formed by a lower platform, counterweights, a tower and a guide wheel platform, and the lower platform is equipped with a direct current motor, a reducer and a driving wheel via shaft couplings, wherein the direct current motor can output with constant power at low rotating speed. Guide wheels are mounted on the guide wheel platform, wherein a front guide wheel is mounted on a right guide wheel platform which is connected with the guide wheel platform via hinges, and a movable support is arranged between the right guide wheel platform and a framework, two rows of parallel chain grooves are arranged on the driving wheel , and two ends of two rows of high-strength ring chains are respectively connected with a main counterweight, an auxiliary counterweight and a wire hanger via connecting pieces. The ring chain type double counterweight pumping unit is small in mechanical structure, high in efficiency, balance in operation, large in overload current, convenient and simple in parameter adjustment without reactive loss, and can exploit the thick oil. Further, the ring chain type double counterweight pumping unit also resolves the problem that a tower machine is difficult in operation and test.

Description

The two counterweight pumping units of round chain type

Technical field

The utility model belongs to the oil recovery machiner technical field, is specifically related to a kind ofly promptly use applicable to general oil field, can be fit to the pumping unit of the two counterweights of round chain type that viscous crude gathers again, and international Patent classificating number is: E21B43/00.

Background technique

Countries in the world are in machine is quarried oily equipment, be extensive use of over one hundred year historical beam pumping unit arranged, it simple in structure, durable in use, but because its working principle and structural problem exist following unsurmountable shortcoming: 1. the ground transmission line is long, make surface efficiency very low, generally about 60%; 2. the pumping unit starting acceleration is generally 3m/s ²About, so the live load of pumping unit is excessive, the work operation is not steady; 3. the squirrel cage motor power factor is low, and starting current is big, is generally more than 3 times of rated current, so pumping unit must be selected heavy-duty motor for use, causes the phenomenon of " low load with strong power "; 4. beam pumping unit stroke and jig frequency are regulated difficulty, and adjustable value is very little, and as regulating the mechanical part (as motor, retarder, belt transmission etc.) that must change former transmission system, pumping unit then more is restricted when heavy crude producing.

In recent years a lot of people transform beam pumping unit, but effect is all bad, and the fine pylon machine in energy-conservation aspect also only limits to two kinds, chain type oil pump and friction type pumping unit.Chain type oil pump is because of using chain, and lubricated can't the sealing exists chain wear fast, and working life is short, has shortcomings such as chain, wheel impact after the chain distortion; The friction type pumping unit is owing to drive the operation up and down of polished rod with the frictional force of wire rope and friction wheel generation, the ratio problems that just has wire rope and bull wheel, ratio is big, and bull wheel is big, and equipment is huge, ratio is little, the life-span of wire rope is short, only about 1 year, when taking out viscous crude, the power that acts on the rope hanger has nearly 1/2 counterweight forces all the time, so be difficult to finish the collection of viscous crude.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned pumping unit, and a kind of high efficiency is provided, and low energy consumption is promptly used applicable to general oil field, can be fit to the two counterweight pumping units of round chain type that viscous crude is gathered again.

The utility model is that the guide wheel platform by lower platform, counterweight, frame and upper rack constitutes, and by coupling direct current generator, break, speed reducer and driving wheel is installed in lower platform, the loop chain that cooperates with driving wheel.Main counterweight guide wheel, secondary counterweight guide wheel, back guide wheel and front jocket wheel are installed on the guide wheel platform, and wherein front jocket wheel is installed in right side guide wheel platform, and right side guide wheel platform is connected with hinge with the guide wheel platform, and and frame between be provided with movable supporting; Described driving wheel is provided with the parallel key way of two rows, and two parallel high-strength loop chains are installed on the key way.One end of loop chain connects a towing band by link, the other end of towing band connects main counterweight by main counterweight guide wheel, the other end of loop chain connects three towing bands by link, a middle the other end that connects the towing band links by secondary counterweight guide wheel and secondary reprovision, two towing band the other ends on both sides connect rope hanger by forward and backward guide wheel, clockwise and anticlockwise by motor makes main counterweight move up and down with opposite direction with rope hanger, secondary counterweight, finish adopting of crude oil and draw, this moment, secondary counterweight and rope hanger were to be synchronized with the movement.

Described guide wheel platform is connected with right side guide wheel platform by hinge, and right side guide wheel platform and pylon are provided with movable supporting, and operation rope one end is fixed on the front jocket wheel, and the other end is wrapped on the secondary counterweight guide wheel;

Described motor need adopt the direct current generator that under the high wind cold state slow-speed of revolution can permanent power output in rated power.The control of DC generator speed is stepless continuous; be fit to frequent startup and braking; the number of times that per minute starts, brakes is greater than 30 times; the stroke, the jig frequency standard that are suitable for China's pumping unit; output shaft at motor is connected by the matrix coupling with the input shaft of speed reducer is middle; and is furnished with hydraulic brake open in usual; as long as but all safety brakes of shutdown of any way under the electric situation are arranged at electrical network; speed reducer adopts hard-tooth surface speed reducer; this speed reducer efficient height; life-span is long, and volume is little, and the output terminal of speed reducer is connected with driving wheel by the matrix coupling.

The change of direction of motor rotation is by controlling as lower device: an electromagnetic induction switch is installed in the middle of pylon a permanent magnet is installed on main counterweight, when motor rotates, counterweight and polished rod are done the opposite direction operation, when permanent magnet when the electromagnetic induction switch, just produce a pulse signal, this signal is given signal of control unit programmable controller (plc), if equipment does not carry out the stroke adjustment, by an electric motor, when plc receives this signal, plc decontrols the crawl motor and stops with regard to the umber of pulse that the encoder that begins to count record motor afterbody and install provides so, and plc passes to stroke with the data of record and adjusts memory; If normal operation, when pic receives this signal, start the operation counter, the umber of pulse of opening entry encoder, when the data of operation counter equal the data of stroke adjustment memory, plc provides the signal of the counter-rotating of motor, finishes the clockwise and anticlockwise of motor, and the motion speed that the adjusting of jig frequency need only be adjusted motor gets final product.

The utility model is when underground work, at first can be from unloading, after the rope hanger polished rod reaches bottom break is braked, lay down the rope hanger on the polished rod, because secondary counterweight is arranged, pass through crawl, motor dynamic brake operation is placed on main counterweight on the ground, this moment, secondary counterweight was topmost, available interim suspension member is fixed on operation rope one end on the front jocket wheel on the guide wheel platform, and the other end is wrapped on the secondary counterweight guide wheel, open movable supporting, revolute pair counterweight guide wheel can be mentioned front jocket wheel and reserved job position.

Because the overload capacity of motor is strong, in the time of need making indicator diagram, only need that suspensorium is put pithead position and make rope hanger lose pulling force, continue crawl this moment, motor overload operation is by secondary counterweight pull-up master counterweight, and the dynamometer sensor is got final product between the side's of insertion clamp and the rope hanger fast.

The utility model also can carry out the viscous crude collection, most thick oil well, speed was very slow when sucker rod descended by deadweight, if when also having masterpiece to be used in the opposite direction of polished rod decline, sucker rod just is difficult to descend so, have at least 1/2 counterweight forces to act on the polished rod during decline, sucker rod just is difficult to descend so, can't normally move.And the two counterweight pumping units of loop chain only need the gravity that pair is heavy to be enlarged to sucker rod gravity.Direct current generator is mixed forced ventilation, under low speed, allows motor do output-constant operation, motion speed transfer to sucker rod rate of descent one to can normally moving, but and the rotating speed of expanded motor also when promoting sucker rod, improve the production fluid amount.

The utlity model has following advantage: mechanical structure is little, efficient is high, the operation balance, and overcurrent is big, and no reactive loss transfers ginseng convenient and simple, can carry out adopting of viscous crude and draw; Also solved the problem that the pylon machine operation is difficult and test is difficult in addition.

Description of drawings

Fig. 1 is the utility model left view (removing motor and reducing gear).

Fig. 2 is the utility model plan view.

Embodiment

As depicted in figs. 1 and 2, the utility model is made up of pumping unit guide wheel platform 17, frame 8 and lower platform 1, by

coupling

22 and 24 direct current generator 20, speed reducer 23 and driving wheel 3 are installed in lower platform 1, main counterweight guide wheel 9, secondary counterweight guide wheel 12, back guide wheel 13 and front jocket wheel 18 are installed on guide wheel platform 17, wherein front jocket wheel 18 is installed in right side guide wheel platform, right side guide wheel platform is connected with hinge 14 with the guide wheel platform, and and 8 of frames be provided with movable supporting 19; Described driving wheel 3 is provided with the parallel key way 26 of two rows; One end of loop chain 4 connects a towing band 6 by coupling 2, the other end of towing band 6 connects main counterweight 7 by main counterweight guide wheel 9, and the other end of loop chain 4 is connected an end of three towing bands by link 11, connecing the other end that drags with 10 by one in the middle of the secondary counterweight guide wheel 12 links to each other with secondary reprovision 5 by secondary counterweight guide wheel, before two towing band 16 the other ends on both sides pass through, back guide wheel 13 is connected rope hanger 25 with 18, clockwise and anticlockwise by motor makes main counterweight and rope hanger, secondary counterweight is moved up and down with opposite direction, finish adopting of crude oil and draw, this moment, secondary counterweight and rope hanger were equidirectional being synchronized with the movement.Among Fig. 1 27 is that electromagnet, 28 is electromagnetic induction switch.

Described guide wheel platform is connected with right side guide wheel platform by hinge 14, and right side guide wheel platform and frame 8 are provided with movable supporting 19, and operation rope 15 1 ends are fixed on the front jocket wheel 18, and the other end is wrapped on the secondary counterweight guide wheel 12;

Constitute transmission system of the present utility model by direct current generator 20, break 21, coupling 22, speed reducer 23, coupling 24 and driving wheel 3, the parallel key way of two rows of driving wheel drives two parallel loop chains, one end of loop chain connects an end of towing band by coupling, and the other end by counterweight guide wheel towing band connects main counterweight; The other end of loop chain is by an end of three towing bands of coupling connection, and by the other end auxiliary connection counterweight of a towing band in the middle of the secondary counterweight guide wheel, by the front and back guide wheel, the other end of two towing bands in front connects rope hanger.

Claims

1, the two counterweight pumping units of round chain type, by the guide wheel platform (17) of lower platform (1), frame (8), upper rack, guide wheel platform (17) go up the main counterweight guide wheel (9) installed, secondary counterweight guide wheel (12), back guide wheel (13), front jocket wheel (18) and by coupling (22 and 24) be installed in direct current generator (20), break (21), speed reducer (23) and the driving wheel (3) on the lower platform (1), the loop chain (4) that cooperates with driving wheel (3) is formed, it is characterized in that:

The circumference of described driving wheel (3) is provided with two key ways (26);

Described loop chain (4) is two parallel high-strength loop chains.

2, the two counterweight pumping units of round chain type according to claim 1 is characterized in that:

One end of described loop chain (4) connects a towing band by link (2), and the other end of towing band is connected with the main counterweight (7) that has electromagnet by main counterweight guide wheel (9); The other end of loop chain (4) connects the towing band by link (11), and the towing band is walked around secondary counterweight guide wheel (12) and is connected with secondary counterweight (5).

3, the two counterweight pumping units of round chain type according to claim 1 is characterized in that:

Described direct current generator (20) adopts the direct current generator that under the high wind cold state slow-speed of revolution can permanent power output in rated power.

4, the two counterweight pumping units of round chain type according to claim 1 is characterized in that:

Described guide wheel platform is connected with right side guide wheel platform by hinge (14), and right side guide wheel platform and frame (8) are provided with movable supporting (19), and operation rope (15) one ends are fixed on the front jocket wheel (18), and the other end is wrapped on the secondary counterweight guide wheel (12).