CN2193939Y - Numerical controlled derrick beam-pumping unit - Google Patents

Abstract

The utility model relates to a numerical controlled derrick oil pumping machine. A machine frame is composed of a derrick column hinged on a base via a pin shaft and tower-shaped platform supported by back support frames. A front and a back guide wheel units are arranged on the platform, wire ropes used for bearing an oil pumping piston and the static load of a connecting rod are fixedly connected with a front and a back cross beams after winding two guide wheel units, and a full-speed rare-earth synchronous machine generating electricity via an adjustable inverse power supply, a belt pulley driven by the full-speed rare-earth synchronous machine and a driving device composed of a plurality of V-shaped triangle belts are also arranged on the platform. One end of a dynamic load supported by the triangle belts is connected with a rod suspended with the oil pumping piston, and the other end of the dynamic load is connected with the back cross beam suspended with a balance weight. The utility model is a novel machine for petroleum exploitation.

Description

Numerical controlled derrick beam-pumping unit

The utility model relates to a kind of mast type numerically controlled beam-pumping unit of novel structure, belongs to the petroleum production field of mechanical technique of electromechanical integration.

Because viscous crude and deep mining task are heavy day by day in China oil field, prior mechanical pumping unit complex structure, the operation operation is loaded down with trivial details, noise is big, the energy consumption height, and the transmission part wearing and tearing are severe, to the bad adaptability of domestic these oil wells, productivity and capacity usage ratio are all very low.At this situation, the claimant successively succeeds in developing " sprocket-type numerically controlled beam-pumping unit " (patent No.: CN92200003.4) with " mast-type numerically-controlled oil pumping unit " (patent No.: CN92234254.7).The former is on probation through the scene, proof fully numerical-controlled electric towing (patent No. CN92200002.4) is as the pumping unit that drives power, has the unrivaled superiority of pumping unit powered by conventional energy, its energy-saving effect can reach 1 order of magnitude, and, overcome smoothly by information technology and to be put to engineering construction the insurmountable problem of original many employing traditional means.But prove from site test, adopt new driving power after, it is too complicated heavy that original traditional mechanical structure had just seemed.So its mechanical structure is simplified and release latter patent.The body framework of this numerically controlled beam-pumping unit is reduced to mast, and more original shaped steel welded frame is saved steel 40%, and it is about 50% to reduce machining man-hour, has also simplified the auxiliary operation of installation and workover eration.After process is tried out the scene of a period of time of mast-type numerically-controlled oil pumping unit model machine, find further improvement and the simplification of its mechanical driving part.

The purpose of this utility model provides reasonable more, the simple mast type numerically controlled beam-pumping unit of a kind of mechanical transmission.

The utility model includes: the oil pumping pit shaft, the swabs bar, the oil pumping frame, the front and back guide wheel group, motor, counterweight, wire rope, the frame of wherein pumping is formed by the hinged turriform platform that is supported on two common rests of supporting frame of mast principal post on the pedestal and its rear side of bearing pin by two, it is characterized in that: before and after the turriform platform, be separately installed with leading wheels and back guide wheel group on two side supports, be used to bear this two guide wheel group of wire rope pile warp of swabs and connecting rod static load thereof, the rear end of wire rope and rear cross beam and counterweight are affixed, and its front end is then affixed with the front cross beam that hangs the swabs bar; In turriform platform installed in front by the numerically controlled unit head of forming by numerical control full speed rare-earth synchronous motor and belt pulley, on this belt pulley, lay some the V-type v belt that are used to bear the sucker rod dynamic load, its front end is fixed on the front cross beam, and the rear end then is fixed on the rear cross beam behind the pile warp belt guide wheel; The input end of numerical control full speed rare-earth synchronous motor is connected to adjustable inverter, pressure transducer, the position transducer of measuring the swabs position and the programmable controller that adjustable inverter is controlled are housed at the oil outlet place of pumping well, and the output terminal of pressure transducer and position transducer all links to each other with the input end of programmable controller.

The utility model has kept the metal machine frame and the structure member of original mast-type numerically-controlled oil pumping unit, and these parts are still selects standard equipment and universal accessories for use, can solve on the spot at the scene, oil field to upgrade or manufacturing, and processing technology is very simple.The utility model mainly is that the mechanical driving part to former invention changes static load and the dynamic load when bearing whole pumping unit work respectively by wire rope and numerical controlled power device, i.e. the name origin of load sharing formula into.This load sharing structural advantages that forms a complete set of is very significant, as, the load-bearing suspension system apparatus only bears static load, and the load that can not withstand shocks is stressed single.Drive unit only bears effective dynamic load, because of being fitted with quite flexible narrow " V " type v belt, it transmits power, can effectively absorb impact load, so pumping unit this device of when work only bears the dynamic load that coincide substantially with theoretical calculation, running is steady.The relative static load of this dynamic load is very low, and the operating conditions of drive unit is just in shape all the time like this, the life-span of mechanical parts is greatly prolonged, and significantly reduce maintenance work, and is daily lubricated etc. as not needing.Adopt structure of the present utility model, frame and drive unit have all been realized simplified design, also are general standarized component mostly, price is low, can make full use of the on-the-spot material in oil field and make on the spot, the utility model easy to utilize takes root and bloosom Numeric Control Technology in the petroleum production mechanical field.In a word, the utility model provides a new way for utilizing the electromechanical integration new and high technology to rebuild traditional industry.

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

Fig. 2 is that the wire rope and the belt row of A-A direction among Fig. 1 lists intention.

Referring to Fig. 1, the utility model includes oil pumping pit shaft 10, swabs bar 11, frame, wire rope 5, front and back guide wheel group 1,2, motor 3, counterweight 14, the frame of wherein pumping is formed by the hinged turriform platform 9 that is supported on two supporting frames, the 8 common rests of mast 7 on the pedestal 12 and its rear side of bearing pin 13 by two, on two side supports of the front and back of turriform platform 9, be separately installed with leading wheels 1 and back guide wheel group 2, two guide wheels about every group of these two guide wheel group all have are installed in the both sides of platform 9 respectively.Be used to bear this two guide wheel group 1,2 of wire rope 5 pile warps of swabs and connecting rod 11 static loads thereof, the rear end of wire rope 5 and rear cross beam 14 and counterweight 14a are affixed, and its front end is then affixed with the front cross beam 6 that hangs swabs bar 11; In turriform platform installed in front by the numerically controlled unit head of forming by numerical control full speed rare-earth synchronous motor 3 and belt pulley, on this belt pulley, lay some the V-type v belt 4 that are used to bear the sucker rod dynamic load, the front end of belt 4 is fixed in (the arrangement situation of wire rope 5 and v belt 4 is referring to Fig. 2) on the front cross beam 6, also is fixed on the rear cross beam 14 behind its rear end pile warp belt guide wheel 19; Input end at numerical control rare-earth synchronous motor 3 is connected to the adjustable inverter 18 of numerical control, pressure transducer 15 is equipped with at oil outlet place at pumping well, measure the position transducer 16 of swabs 11 positions and the industrial control unit (ICU) 17 that adjustable inverter 18 is controlled, the output terminal of pressure transducer 15 and position transducer 16 all links to each other with the input end of controller 17.

Working principle of the present utility model and mast-type numerically-controlled oil pumping unit are similar, promptly receive voltage, frequency, all variable power supply of phase place that adjustable inverter 18 is supplied with by the numerical-control motor in the numerically controlled unit head 3, make the rotating speed of motor 3 and turn to and to control in real time, thereby can change the moving direction and the speed of swabs bar at any time.And measure the swabs resistance and the position in when work at any time by pressure transducer 15 and position transducer 16, be input to 17 li of industrial control unit (ICU)s simultaneously, make comparisons according to the operation conditions of input and the optimal processing parameter of setting by controller 17, carry out digital control to adjustable inverter 18, piston can be moved under optimum condition, realize high good low consumption.Rack section of the present utility model is basic with identical originally, and just its mechanical driving part changes by two-part and forms: promptly the static load that is made of frame, piston rod 11, front and back guide wheel group 1,2, wire rope 5, front and back crossbeam 6,14 and counterweight 14a partly and the dynamic load part that is made of numerical-control motor 3 and control gear thereof, belt pulley, V-type v belt 4.Wherein all two wire rope 5 all bear static load (basic gravity load) thus; Comparatively speaking, then by V-type v belt 4 loads that can effectively absorb impulsive load, this load sharing is rational in infrastructure simple again, can also prolong the stroke of pumping unit arbitrarily, makes the ultra long stroke beam-pumping unit that stroke surpasses ten meters for less dynamic load.

The utility model still has the masts type pumping unit and can utilize the sleeve pipe of oilfield waste and shaped steel to make frame and field erected advantage on the spot, its v belt and belt pulley also are universal standard part, equally can be by behind professional plant produced numerical-control motor, v belt and the belt pulley, assemble and debug at the scene, oil field, with manufacturing, transportation and the mounting cost that reduces pumping unit to greatest extent.According to measuring and calculating, equipment investment of the present utility model can reduce 30%～40% than traditional pumping unit.

The motor of mast-type numerically-controlled oil pumping unit is the numerical control full speed rare-earth synchronous motor (patent No.: CN91203427.0) that has obtained patent, this motor is under the cooperation of DCPS digitally controlled power source, can on a large scale, steadily regulate rotating speed and irrelevant substantially with load, mechanical property is good, detent torque is big, and rotary inertia is little, the saving energy, this speed load characteristic of suitable especially pumping unit changes the working machine of great disparity and makes driving force, can realize that variable working condition drives.Enforcement in the oil field proves that the performance of this numerical control power is good, more satisfactory.The utility model also is to adopt numerical control full speed rare-earth synchronous motor as power, be equipped with v belt transmitting tractive power again, can absorb the impact load in the dynamic load better, so being provided with of the utility model drive unit is more more reasonable than mast-type numerically-controlled oil pumping unit, efficient.

Claims (1)

1, a kind of mast type numerically controlled beam-pumping unit, include the oil pumping pit shaft, the swabs bar, the oil pumping frame, the front and back guide wheel group, motor, counterweight, wire rope, the frame of wherein pumping is formed by the hinged turriform platform that is supported on two common rests of supporting frame of mast principal post on the pedestal and its rear side of bearing pin by two, it is characterized in that: before and after the turriform platform, be separately installed with leading wheels and back guide wheel group on two side supports, be used to bear this two guide wheels wire rope of wire rope pile warp of swabs and connecting rod static load thereof, rear end and rear cross beam and counterweight are affixed, and its front end is then affixed with the front cross beam that hangs the swabs bar; In turriform platform installed in front by the numerically controlled unit head of forming by numerical control full speed rare-earth synchronous motor and belt pulley, on this belt pulley, lay some the V-type v belt that are used to bear the sucker rod dynamic load, its front end is fixed on the front cross beam, and the rear end then is fixed on the rear cross beam behind the pile warp belt guide wheel; The input end of numerical control full speed rare-earth synchronous motor is connected to adjustable inverter, pressure transducer, the position transducer of measuring the swabs position and the programmable controller that adjustable inverter is controlled are housed at the oil outlet place of pumping well, and the output terminal of pressure transducer and position transducer all links to each other with the input end of programmable controller.

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