CN103912243A - Constant-power energy-saving dragging method of pumping unit - Google Patents
Constant-power energy-saving dragging method of pumping unit Download PDFInfo
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- CN103912243A CN103912243A CN201310004067.8A CN201310004067A CN103912243A CN 103912243 A CN103912243 A CN 103912243A CN 201310004067 A CN201310004067 A CN 201310004067A CN 103912243 A CN103912243 A CN 103912243A
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Abstract
Provided is a constant-power energy-saving dragging method of a beam-pumping unit. A device used by the method comprises the beam-pumping unit, a rod oil-pumping pump and a constant-power output type alternating current induction motor special for the pumping unit and provided with a bell-shaped large-rotary-inertia energy storage fly wheel. The special constant-power induction motor can highly adapt to intense pulsating torque load of the beam-pumping unit under the small current condition, keep a power factor to be about 0.9 under the condition that the ultra-high slip ratio S is equal to 20% and perform high-torque constant-power dragging on the beam-pumping unit. The bell-shaped large-rotary-inertia energy storage fly wheel can release torque which is about 1.5 times of average running toque of the constant-power motor in a stroke pulsating torque peak value interval of the beam-pumping unit and jointly drag a pulsating torque peak value, and can absorb inertial kinetic energy released by a heavy type transmission system of the beam-pumping unit in a torque low-valley interval and torque energy of the constant-power motor during speed rising, enable a whole machine system to run under the smooth load and can thoroughly eliminate a phenomenon that the beam-pumping unit severely wastes enteric energy reversely drags the motor.
Description
Technical field
The present invention relates to beam-pumping unit and electric drive technology thereof that oil extraction in oil field is used, the permanent power that especially relates to a kind of novel large torque-output characteristics that can highly adapt to the violent pulsating torque load properties of beam-pumping unit drags energy conservation.
Background technology
The advantages such as that beam-pumping unit has is simple in structure, cheap, maintenance cost is few, since half a century, oil field both domestic and external is all widely used.But it also exists more serious shortcoming, oil pumper is the equipment of heavy load starting long-term light running, belong to the output characteristics of AC torque motor, but AC torque motor of the prior art is by increase rotor loop resistance value, superfluous slip power to be changed into the mode dissipating after heat energy to realize required torque characteristics, because of rotor loop resistance very ambassador, it generates heat in a large number, force the volume of induction alternating current (AC) motor design large, cost is high, add again that operational efficiency is low and make it can not be used for driven oil-pumping machine equipment.Therefore since half a century, oil field is to carry out driven oil-pumping machine with common mouse-cage type 6 utmost points and 8 utmost point induction alternating current (AC) motors always, because the detent torque of common mouse-cage type 6 utmost points and 8 utmost point induction alternating current (AC) motors only has twice nominal torque, for making oil pumper normally start, need the specification of the detent torque apolegamy induction alternating current (AC) motor of pressing oil pumper, while normally operation after starting, the Rate of average load of induction alternating current (AC) motor only has 30% left and right, causes the situation of serious " low load with strong power ".Induction alternating current (AC) motor used for oil extractor is to pass through belt pulley, gear-box, the mechanisms such as crank axle and four connecting rods convert induction alternating current (AC) motor to the upper and lower straight reciprocating motion of low speed of suspension point at the high speed rotary motion under rated speed, the Y2 series cage modle induction alternating current (AC) motor using now can only be under rated speed could long-play, the soft commutation that the constant speed rotary of induction alternating current (AC) motor moves through crank axle mechanism converts speed to by sinusoidal rule, from zero to peaked speed change linear reciprocating motion, pass to down-hole swabs by the long draw of upper km, reach the object that extracts oil.This traditional straight line variable motion oil pumping mode is difficult to make the swabbing parameter of down-hole piston pump be tending towards rationally and reduce pump leakage, makes further to improve oil pump efficiency and is restricted.Due to the driven off by shaft characteristic properties of crank, its rectilinear motion speed ratio is sharply changed, induction alternating current (AC) motor on oil pumper is to move under the property specific cycle pulsating load condition from zero load to maximum load, add four jointed gear units and form the drive line angle of continuous variation, cause again the reach of pulsating load peak value and produced negative torque phenomenon, the load characteristic of oil pumper is further worsened, cannot realize the complete equipilibrium operation of oil pumper by adjustment counterweight, thereby the energy index of induction alternating current (AC) motor is significantly declined, the average operating efficiency that makes Y2 series induction alternating current (AC) motor drops to 60% left and right by original 90%, make the average power factor of Y2 series induction alternating current (AC) motor drop to 0.4 left and right simultaneously.
Oil pumper is a kind of heavy-duty machinery, inertia load torque when startup is very large, add that induction alternating current (AC) motor is to operate under the pulsating load condition that periodic peaks is very high, force supporting induction alternating current (AC) motor specification excessive, the more than 10 times of average current when the starting current that causes induction alternating current (AC) motor is operation, the needs of large electric current while startup for meeting induction alternating current (AC) motor, power supply unit capacity also will increase accordingly with induction alternating current (AC) motor the increase of output power.
Induction alternating current (AC) motor is at zero load or approach zero load when operation, and not only induction alternating current (AC) motor wastes electric energy, and the power supply unit such as the oil well dedicated transformer of unit power supply also wastes electric energy.
Summary of the invention
One of object of the present invention is to provide a kind of permanent power induction alternating current (AC) motor of the novel large torque-output characteristics that can highly adapt to the violent pulsating torque load properties of beam-pumping unit.
Two of object of the present invention is to provide a kind of bell flywheel of large rotating inertia that is fixed with in shaft extension after induction alternating current (AC) motor, the permanent power induction alternating current (AC) motor that residue pulsating torque is carried out to filtering.
The permanent power of oil pumper of the present invention drags energy conservation and is achieved in that beam-pumping unit is by base, walking beam support, walking beam, the horse head of walking beam front end, wire rope, the suspension point that wire rope is connected with sucker rod, the quadric chain at walking beam rear portion, crank axle, rocking arm, balance weight, gear reduction box, belt pulley, induction alternating current (AC) motor and switchbox composition, it is characterized in that induction alternating current (AC) motor is that a kind of fluctuating load torque that can automatically follow oil pumper changes, there is the induction alternating current (AC) motor that self adaptation regulates the novel high force-energy index constant power output of torque functions, the rotor core of this induction alternating current (AC) motor is to be made up of the centre and three sections, two lamination that are fixed on armature spindle stage casing, middle one section is to be equivalent to the long deep trouth cage-type rotor lamination of stator core, two lamination is middle position between the inside and outside circle of annular punching, there is the rotor bar hole of wearing embedding rotor bar equating with stage casing lamination slot number, between rotor bar hole and punching cylindrical, form the outer yoke of two rotor pack, between rotor bar hole and punching endoporus, form the inner yoke of two rotor pack, three sections of shared stage casings of lamination are wider, the aluminum that two is narrow or copper insulation rotor sliver, the part outside rotor core is stretched out at rotor bar two, form the self-cooling fan of rotor, have and electrically connect the rotor current short circuit end ring being welded on rotor bar stretching out between the rotor bar outside at rotor core two ends and two rotor pack outer yoke, after induction alternating current (AC) motor, in shaft extension, be fixed with and be arranged on induction alternating current (AC) motor shell back segment periphery and have fan concurrently, the bell flywheel of large rotating inertia of fan housing function.
This inductiopn rotor that grows stator core at two, have while operation under super-high slip ratio to the superfluous slip power of stator limit feedback, the harmful inertia load producing when the special permanent power induction alternating current (AC) motor of driven oil-pumping machine is moved with oil pumper under high force-energy index is coupled, and further with the bell energy-storing flywheel of large rotating inertia that is arranged on induction alternating current (AC) motor periphery, residue pulsating torque is carried out to filtering, the pulsating torque load of oil pumper is converted into normal torque load, the oil pumper that makes it thoroughly to eliminate serious waste electric energy draws induction alternating current (AC) motor phenomenon.Reach and make beam-pumping unit realize the object of moving under high efficiency and High Power Factor
Its subordinate is characterised in that:
1, there is thick film anodization layer on narrow aluminum rotor bar surface, middle wide two, and there is enamel on copper rotor bar surface.
2, induction alternating current (AC) motor is used YCJ series one pole deceleration electric engine housing and reduction box.
3, regulate respectively oil pumper upstroke speed or down stroke speed by regulating the method for oil extractor balance weight to realize.
4, the threephase stator winding of induction alternating current (AC) motor uses 6 utmost points to become the variable-pole winding of 8 utmost points.
The invention has the beneficial effects as follows:
1, can be when existing common beam oil pumper keeps soft commutation advantage, make the extraction speed of swabs more reasonable, improve the oil pumping amount of each oil pumping spurt, in the situation that level is 100 to 400 meters, can drag method than existing routine and economize on electricity more than 35%, can be than " cycle variable speed drags energy conservation " more piece electricity 15%-20%.
2, the induction alternating current (AC) motor that the circuit structure of the present invention's permanent power induction alternating current (AC) motor stator used and rotor winding structure all use than " cycle variable speed drawing method " is simply many, thereby stator dimensions and rotor size are all dwindled many, easily manufacture, cost significantly declines, reject the power electronic device of a large amount of poor reliability, improved complete machine reliability of operation.
3, the permanent power of beam-pumping unit drags, and can reduce the load peak of V belt, gear-box and ball bearing, can reduce power consumption, reduces wear and improve reliability, also can reduce the application life of maintenance cost and extension device simultaneously.
4, the feature of the present invention's constant power output characteristic induction alternating current (AC) motor used is: starting current is little, is 1/3 of existing induction alternating current (AC) motor used for oil extractor; Detent torque is large, is 2 times of existing beam-pumping unit induction alternating current (AC) motor.Because detent torque is large, starting current is little, under equal conditions, and 37 kilowatts of induction alternating current (AC) motors that available 10 kilowatts of permanent power induction alternating current (AC) motors replace existing beam-pumping unit to use.Can reduce the application life of the capacity of power supply unit, the operational efficiency that improves supply transformer, prolongation transformer, the investment of saving equipment.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described
The comparison diagram of Fig. 1 a kind of 11KW special permanent power large torque induction alternating current (AC) motor torque characteristic curve of 8 utmost point oil pumper of the present invention and Y2 series 11KW8 utmost point induction alternating current (AC) motor torque characteristic curve.
Fig. 2 is the pulsating torque load curve of beam-pumping unit after overbalance and the large torque induction alternating current (AC) motor of permanent power at the actual output characteristic curve comparison diagram that constant power output characteristic is interval after intercoupling with bell fly-wheel control and oil pumper drive train inertia.
In figure 1, the torque characteristic curve of the large torque AC induction motor of a kind of 11KW special permanent power of 8 utmost point beam-pumping unit of the present invention.In figure 2, the torque characteristic curve of Y2 series 11KW 8 utmost point induction alternating current (AC) motors.The pulsating torque load curve of beam-pumping unit in figure 3, after overbalance.In figure 4, the large torque induction alternating current (AC) motor of permanent power is at constant power output characteristic is interval after intercoupling with bell fly-wheel control and oil pumper drive train inertia actual output characteristic curve.
Detailed description of the invention:
The system that the permanent power drawing method of beam-pumping unit is made up of following part realizes.
The needed power of long piston pump that is arranged on oil well bottom is down from surface well oral instructions by the long draw of upper km, the wire rope that is fixed on rod line carrier upper end is in transmission connection by horse head and walking beam, the other end of walking beam is in transmission connection with two crank axles by crossbeam and two long connecting rods, and then is in transmission connection by the heavy components such as heavy reduction box and big belt pulley and heavy large-scale counterweight and the induction alternating current (AC) motor of several upper ton that be contained on rocking arm.Because the inertia of whole transmission system is large especially, add upstroke intrinsic drive characteristic due to crank axle and connecting rod between 10 °～70 °, make heavy transmission system form very large acceleration rectilinear motion, induction alternating current (AC) motor is except providing Liquid extracting and promoting required load torque, also must provide the larger transmission system that makes to accelerate required inertia load torque, thereby make 37KW 8 pole motor momentary overload operations just can drag pulsation peak value.After overbalance, the pulsating torque load curve (3) of beam-pumping unit is the low principal element of induction alternating current (AC) motor operational efficiency that causes oil pumper to use, with permanent power method drag can active balance the transmission speed ratio that causes of crank axle transmission and the violent pulsation of driving torque, again with being arranged on the electronic motivation housing of alternating current impression back segment periphery and being fixed on the large rotating inertia energy-storing flywheel in rear shaft extension, residue pulsation to torque is carried out after filtering, violent pulsating torque load is changed into the forward torque of curve in Fig. 2 (4) low amplitude value pulsation, thoroughly eliminate the phenomenon that oil pumper draws induction alternating current (AC) motor, make the load factor of permanent power induction alternating current (AC) motor all the time in high efficiency section operation, realize the object of beam-pumping unit energy-saving run.
Claims (5)
1. the permanent power of beam-pumping unit drags energy conservation, beam-pumping unit is by base, walking beam support, walking beam, the horse head of walking beam front end, wire rope, the suspension point that wire rope is connected with sucker rod, the quadric chain at walking beam rear portion, crank axle, rocking arm, balance weight, gear reduction box, belt pulley, induction alternating current (AC) motor and switchbox composition, it is characterized in that: induction alternating current (AC) motor is a kind of pulsating torque load variations that can automatically follow oil pumper, there is the induction alternating current (AC) motor that self adaptation regulates the novel high force-energy index constant power output of torque functions, the rotor core of this induction alternating current (AC) motor is to be made up of the centre and three sections, two lamination that are fixed on armature spindle stage casing, middle one section is to be equivalent to the long deep trouth cage-type rotor lamination of stator core, the lamination at two is that lean-with is equipped with the rotor bar hole of wearing embedding rotor bar equating with stage casing lamination slot number between the inside and outside circle of annular punching, between rotor bar hole and punching cylindrical, form the outer yoke of two rotor pack, between rotor bar hole and punching endoporus, form the inner yoke of two rotor pack, three sections of shared stage casings of lamination are wider, the aluminum that two is narrow or copper insulation rotor sliver, the part outside rotor core is stretched out at rotor bar two, form the self-cooling fan of rotor, have and electrically connect the rotor current short circuit end ring being welded on rotor bar stretching out between the rotor bar outside at rotor core two ends and two rotor pack outer yoke, after induction alternating current (AC) motor, in shaft extension, be fixed with and be arranged on induction alternating current (AC) motor shell back segment periphery and have fan concurrently, the bell flywheel of large rotating inertia of fan housing function.
2. the permanent power of a kind of beam-pumping unit according to claim 1 drags energy conservation, it is characterized in that: there is thick film anodization layer on narrow aluminum rotor bar surface, middle wide two, and there is enamel on copper rotor bar surface.
3. the permanent power of a kind of beam-pumping unit according to claim 1 drags energy conservation, it is characterized in that: induction alternating current (AC) motor is housing and the reduction box that uses YCJ series one pole decelerator.
4. the permanent power of a kind of beam-pumping unit according to claim 1 drags energy conservation, it is characterized in that: regulate respectively oil pumper upstroke speed or down stroke speed by regulating the method for balance weight of oil pumping unit to realize.
5. the permanent power of a kind of beam-pumping unit according to claim 1 drags energy conservation, it is characterized in that: the threephase stator winding of induction alternating current (AC) motor uses 6 utmost points to become the variable-pole winding of 8 utmost points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310004067.8A CN103912243B (en) | 2013-01-07 | 2013-01-07 | The soft transmission beam-pumping unit of invariable power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310004067.8A CN103912243B (en) | 2013-01-07 | 2013-01-07 | The soft transmission beam-pumping unit of invariable power |
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| CN103912243A true CN103912243A (en) | 2014-07-09 |
| CN103912243B CN103912243B (en) | 2017-12-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753424A (en) * | 2014-12-26 | 2015-07-01 | 上海奇电电气科技有限公司 | Online adaptive algorithm of frequency converter torque reduction curve |
| CN105484704A (en) * | 2015-12-22 | 2016-04-13 | 上海兰石重工机械有限公司 | Numerical-control hydraulic oil pumping machine |
| CN106917611A (en) * | 2015-12-24 | 2017-07-04 | 中国石油天然气股份有限公司 | Constant power control method and device for oil pumping unit |
| CN110879317A (en) * | 2018-09-06 | 2020-03-13 | 中国石油化工股份有限公司 | Method and system for measuring balance degree of beam-pumping unit |
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| CN1191409A (en) * | 1997-02-17 | 1998-08-26 | 韩天鹏 | Squirrel-cage rotor asynchronous motor |
| CN1536197A (en) * | 2003-04-10 | 2004-10-13 | 江允良 | Periodic speed-changing driving energy-saving method for oil-pumping machine |
| CN201307819Y (en) * | 2008-11-20 | 2009-09-09 | 东明机电（深圳）有限公司 | Rotor structure used for single-phase induction motor |
| EP2200160A1 (en) * | 2007-12-27 | 2010-06-23 | Mitsubishi Electric Corporation | Rotator for induction electric motor, induction electric motor, compressor, blower, and air-conditioning device |
| CN102347671A (en) * | 2010-07-23 | 2012-02-08 | 江允良 | Cage type induction rotor capable of speed regulating operation |
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Patent Citations (5)
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|---|---|---|---|---|
| CN1191409A (en) * | 1997-02-17 | 1998-08-26 | 韩天鹏 | Squirrel-cage rotor asynchronous motor |
| CN1536197A (en) * | 2003-04-10 | 2004-10-13 | 江允良 | Periodic speed-changing driving energy-saving method for oil-pumping machine |
| EP2200160A1 (en) * | 2007-12-27 | 2010-06-23 | Mitsubishi Electric Corporation | Rotator for induction electric motor, induction electric motor, compressor, blower, and air-conditioning device |
| CN201307819Y (en) * | 2008-11-20 | 2009-09-09 | 东明机电（深圳）有限公司 | Rotor structure used for single-phase induction motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753424A (en) * | 2014-12-26 | 2015-07-01 | 上海奇电电气科技有限公司 | Online adaptive algorithm of frequency converter torque reduction curve |
| CN104753424B (en) * | 2014-12-26 | 2019-06-14 | 上海奇电电气科技股份有限公司 | A kind of frequency converter drop torque curve online adaptive algorithm |
| CN105484704A (en) * | 2015-12-22 | 2016-04-13 | 上海兰石重工机械有限公司 | Numerical-control hydraulic oil pumping machine |
| CN105484704B (en) * | 2015-12-22 | 2018-01-09 | 上海兰石重工机械有限公司 | Numerical control hydraulic oil pumper |
| CN106917611A (en) * | 2015-12-24 | 2017-07-04 | 中国石油天然气股份有限公司 | Constant power control method and device for oil pumping unit |
| CN106917611B (en) * | 2015-12-24 | 2020-01-07 | 中国石油天然气股份有限公司 | Constant power control method and device for oil pumping unit |
| CN110879317A (en) * | 2018-09-06 | 2020-03-13 | 中国石油化工股份有限公司 | Method and system for measuring balance degree of beam-pumping unit |
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| CN103912243B (en) | 2017-12-15 |
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