CN201956965U - Voltage adjusting energy-saving dragging device used by oil field pumping unit - Google Patents
Voltage adjusting energy-saving dragging device used by oil field pumping unit Download PDFInfo
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- CN201956965U CN201956965U CN2011201108725U CN201120110872U CN201956965U CN 201956965 U CN201956965 U CN 201956965U CN 2011201108725 U CN2011201108725 U CN 2011201108725U CN 201120110872 U CN201120110872 U CN 201120110872U CN 201956965 U CN201956965 U CN 201956965U
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Abstract
The utility model provides a voltage adjusting energy-saving dragging device used by an oil field pumping unit, which belongs to the technical field of oil field pumping unit controlling, and aims at solving the problems that the existing dragging device has poor energy-saving effect and is easy to generate harmonic wave pollution. The dragging device comprises a basic control unit, an electric magnet actuating mechanism, and a three phase transformer, wherein the basic control unit is used for sending a control order of adjusting the input voltage of a motor to the electric magnet actuating mechanism according to the control order input by a user or a detected change of a current voltage value, the electric magnet actuating mechanism is used for adjusting the output voltage of the three phase transformer according to the control order sent by the basic control unit, and controlling the start and stop of the motor and the star and angle changes of a motor stator winding wire, and the three phase transformer is used for adjusting the rise or fall of the output voltage through the electric magnet actuating mechanism so as to change the work voltage of the motor. In the utility model, after the work current of the work voltage of the motor is detected, the electric magnet actuating mechanism is driven to work under the most energy-saving and adaptive condition, thus realizing energy conservation.
Description
Technical field
The utility model relates to a kind of used for oil-field oil pumper pressure regulating energy-saving actuator, belongs to oil-field oil pumper control technology field.
Background technology
The oil pumper overwhelming majority of using on the oil field is a beam pumping unit at present, and all is furnished with equilibrate counterweight.In order to start and finish oil pumping work smoothly, when the apolegamy actuator, must take out otherwise can not normally rise by the maximum load apolegamy.Start when the back is normal to be moved,, be low to moderate 10%-30% because the particularity of oil pumper load causes load factor to reduce greatly.Produce " low load with strong power " phenomenon ubiquity.Because load factor is low, makes the motor overall efficiency low, loss is big, and power factor is low, at 0.3-0.4, can cause line loss to increase like this.As seen conventional actuator efficient is low, and loss is big, has wasted the more energy.
In the prior art, the actuator that adopts the SCR AC pressure regulation to solve " low load with strong power " is arranged.But SCR AC pressure regulation output is not pure sine wave, detects voltage and can be reduced to about 160 volts sometimes, but energy-saving effect and not obvious under the contrast, and can produce a large amount of harmonic waves injection electrical networks, cause harmonic pollution.
Summary of the invention
The utility model is relatively poor for solving the energy-saving effect that exists at existing actuator, causes the problem of harmonic pollution easily, has proposed a kind of used for oil-field oil pumper pressure regulating energy-saving actuator, comprising:
The basis control unit is used for sending to electromagnetic actuator according to the variation of the current/voltage value of the control command of user input or detection the control command of the input voltage of adjusting motor;
Electromagnetic actuator, the control command that is used for sending according to basic control unit is adjusted the output voltage of three-phase transformer, and the start-stop of control motor and the conversion of motor stator winding connection De Xing ﹑ angle;
Three-phase transformer is used for adjusting the liter of output voltage or falling the operating voltage that changes motor by electromagnetic actuator.
The utlity model has following beneficial effect: owing to adopt such scheme as can be seen, the operating voltage that the motor of oil pumper obtains is after detecting the motor operating voltage operating current by basic control unit, finish a series of computings and send command adapted thereto driving electromagnetic actuator through plug-in, motor is operated under the most adaptive the most energy-conservation operating voltage, thereby realizes best energy-saving effect.
Description of drawings
Fig. 1 is the structural representation of the used for oil-field oil pumper pressure regulating energy-saving actuator that provides of embodiment of the present utility model;
Fig. 2 is the electrical block diagram of the three-phase transformer that provides of embodiment of the present utility model;
Fig. 3 is the electrical control schematic diagram that passes through the three-phase transformer buck that embodiment of the present utility model provides.
Embodiment
Embodiment of the present utility model provides a kind of used for oil-field oil pumper pressure regulating energy-saving actuator, comprise basic control unit, electromagnetic actuator and three-phase transformer, corresponding basic control unit is used for sending to electromagnetic actuator according to the variation of the current/voltage value of the control command of user's input or detection the control command of the input voltage of adjusting motor; The control command that electromagnetic actuator is used for sending according to basic control unit is adjusted the output voltage of three-phase transformer, and the start-stop of control motor and the conversion of motor stator winding connection De Xing ﹑ angle; Three-phase transformer is used for adjusting the liter of output voltage or falling the operating voltage that changes motor by electromagnetic actuator.This used for oil-field oil pumper pressure regulating energy-saving actuator comprises a three-phase transformer, the big electric current winding of the secondary low-voltage of this three-phase transformer is serially connected in the electric power loop of motor, and by controlling the different modes of connection of elementary winding, play and get final product step-down, also can boost, can also keep the output voltage effect identical with input voltage; Can also change simultaneously the mode of connection of motor three phase windings according to different needs, can be that corner connection also can be that star connects, thereby make operating voltage that the every phase winding of motor obtains 11 kinds of different voltages be arranged can be from 380 volts to 167.5 volts, to guarantee that common Y series motor is operated in the highest overall efficiency district, simultaneously can also guarantee that the operating voltage that motor obtains is a pure sine wave, thereby reach best energy-saving effect.For this technical scheme of clearer explanation, describe below in conjunction with Figure of description, as shown in Figure 1, this used for oil-field oil pumper pressure regulating energy-saving actuator specifically can comprise:
Three-phase transformer 3 is used for adjusting the liter of output voltage or falling the operating voltage that changes motor by electromagnetic actuator 2.
Concrete, can comprise detection sub-unit, master control subelement in the corresponding basic control unit 1, show subelement and carry out subelement, detection sub-unit is used for by the real-time testing electric current of the threephase current transformer of inside, the supply voltage of input and the operating voltage of output; The master control subelement is used for calculating the input voltage that obtains motor to be adjusted according to the operating voltage of the supply voltage of the operating current that detects in real time, input and output; Show that subelement is used to show the working current value of real-time detection, the supply voltage value of input, the operational voltage value of output and the input voltage numerical value of the motor to be adjusted that the master control subunit computes obtains; Carry out the control command that subelement is used for sending to the electromagnetism execution architecture input voltage of adjusting motor.The basic control unit of being made up of above-mentioned each subelement can be respectively by showing subelement display power supply voltage, output voltage, reaching the system works current value, and can according to concrete operating mode parameters such as protection value be set, and have GPF (General Protection False functions such as phase shortage, three-phase imbalance by the master control subelement; Also can be according to the different no-load voltage ratios of threephase current transformer, actuator that can adaptive different capacity, little of several kilowatts, greatly to hundreds of even go up megawatt.
Corresponding three-phase transformer 3 as shown in Figure 2, be provided with three groups of elementary windings and six contactors, be provided with four lead-out wires in every group of elementary winding, described four lead-out wires connect a contactor that is connected with the phase line of three phase mains respectively, and two lead-out wires of first and last in described four lead-out wires also connect a contactor that is connected with the zero line of three phase mains respectively.Concrete, two of first and last in four lead-out wires of every group of elementary winding also connect a contactor respectively, these two contactors also connect the zero line of three-phase transformer 2 and three phase mains simultaneously, corresponding respectively three phase lines of A, B, C that connect three phase mains of all the other four contactors.
Corresponding electric control theory by three-phase transformer 3 bucks as shown in Figure 3, voltage raising and reducing is to be made up by different switching of contactor K0, K00, K1, K2, K3 and K4 to finish; But under any state, must there be two to work simultaneously among six contactor K0, K00, K1, K2, K3 and the K4 of three-phase transformer 3 parts.And when newly starting, contactor K0 and K00 be closure simultaneously at every turn, and promptly voltage does not rise and do not fall the assurance full voltage starting.
Corresponding three-phase transformer 3 is connected as shown in Figure 2 with the concrete of contactor in the electromagnetic actuator 2: a side of contactor K1 three-phase contact meets 1a, 1b, 1c respectively, and opposite side connects three phase mains respectively; The side joint 2a of contactor K2,2b, 2c, opposite side connects three phase mains respectively; The side of contactor K3 meets 3a, 3b, 3c respectively, and opposite side connects three phase mains respectively; The side of contactor K4 meets 4a, 4b, 4c respectively, and opposite side connects three phase mains respectively; Three-phase contact carriage one side of contactor K0 meets 1a, 1b, 1c respectively, to the zero line of side joint three phase mains; The three-phase contact of contactor K00 meets 4a, 4b, 4c respectively, to the zero line of side joint three phase mains.The stator winding of motor is that U1 meets V2 with concrete connection of contactor K Δ, and V1 meets W2, and W1 meets U2; And contactor KY one side meets U2 respectively, V2, W2, and offside contact short-circuit line short circuit.
The corresponding motor winding connection mode that changes is to be made of the K △ among Fig. 3 and two contactors of KY and motor three phase windings, but special operation condition at oil pumper, start must guarantee the dihedral full voltage starting at every turn, and the operating voltage that the every phase winding of motor obtains is finished by the conversion of star angle and the 2 different buck values combinations of cooperation three-phase transformer of motor winding by 11 kinds of changes of 380 volts to 167.5 volts.And the lifting of three-phase transformer 2 output voltages, the change of the start-stop of motor and winding connection mode, all be according to detecting the variation of current/voltage value behind the main control singlechip unitary operation in manual command or the work by basic controller 1, send command adapted thereto, reach the start-stop of control actuator and the operating voltage of adjustment motor by three contactor closures in electromagnetic actuator 3 eight contactors of control (wherein the three-phase transformer part is six, two of motor parts).
Concrete, the operating voltage that the every phase winding of motor obtains from 380 volts to 167.5 volts 11 kinds of changes accomplish by following process: send under the electric initial condition, contactor K0 and K00 closure, this moment, transformer secondary output was output as zero, was equivalent to instrument transformer secondary short circuit; As making contactor K Δ closure by start button this moment, (operating voltage of this moment is 380V for motor corner connection full voltage starting and work
, after operating steadily, basic controller 1 is judged according to the detected current signal of threephase current transformer to be needed to reduce voltage, and contactor K0 is disconnected, contactor K △, K00 and K1 closure, and the every phase winding operating voltage of motor this moment is 350V(380-17.5
); When contactor K △, K00 and K2 closure, the operating voltage of the every phase winding of motor is 320V(380-2 * 17.5
); When contactor K △, K00 and K3 closure, the operating voltage of the every phase winding of motor is 290V(380-3 * 17.5
); When contactor K △ disconnection, contactor KY closure, contactor K00 disconnects, when contactor K0 and K2 were closed, the operating voltage of the every phase winding of motor was 272.5V(220+3 * 17.5); When contactor KY, K0 and K3 closure, the operating voltage of the every phase winding of motor is 255V(220+2 * 17.5); When contactor KY, K0 and K4 closure, the operating voltage of the every phase winding of motor is 237.5V(220+17.5); When contactor KY, K0 and K00 closure, the operating voltage of the every phase winding of motor is 220V(220 ± 0); When contactor KY, K00 and K1 closure, the operating voltage of the every phase winding of motor is 202.5V(220-17.5); When contactor KY, K00 and K2 closure, the operating voltage of the every phase winding of motor is 185V(220-2 * 17.5); When contactor KY, K00 and K3 closure, the operating voltage of the every phase winding of motor is 167.5V(220-3 * 17.5).Voltage-regulating and energy-saving controller can automatically above 11 kind voltages between be selected optimum operating voltage through computing according to loading condition according to detected current value at work automatically, guarantees that machine operation is at the maximum energy-saving state.
Further, the used for oil-field oil pumper pressure regulating energy-saving actuator that this embodiment provides can also be realized boosting and step-down, its principle is end of the same name, the different connection method of different name end according to three-phase transformer 2, thereby changes voltage-phase, and then changes the operating voltage of motor.Concrete implementation method is: the big electric current winding coil of the secondary low-voltage of three-phase transformer 2 is serially connected in the electric electromechanics resource loop, all join through switchgear and phase line of power as the end of the same name of crossing elementary winding and secondary winding, output voltage has reduced the transformer-secondary voltage output valve than supply voltage so; Otherwise output voltage is than the input supply voltage transformer-secondary voltage output voltage values that raise.In this embodiment, under the situation of motor dihedral connection, but motor voltage supply voltage (380 ± 0), promptly transformer secondary output is output as zero; Also can reduce by 17.5
Volt, 2 * 17.5
Volt, 3 * 17.5
Volt, promptly 350 volts, 320 volts, 290 volts.If still need step-down, then change the motor winding into star-star connection,, the operating voltage of the simple every phase winding of star connection motor is
Volt, promptly 220 volts, at this moment contactor KY, K0 and K2 closure, the operating voltage of the every phase winding of motor is 272.5V (220+3 * 17.5); In like manner, when contactor KY, K0 and K3 closure, the operating voltage of the every phase winding of motor is 255V(220+2 * 17.5); When contactor KY, KO and K4 closure, the operating voltage of the every phase winding of motor is 237.5V(220+17.5); When contactor KY, K0 and K00 closure, the operating voltage of the every phase winding of motor is 220V(220 ± 0); When contactor KY, K00 and K1 closure, the operating voltage of the every phase winding of motor is 202.5V(220-17.5); When contactor KY, K00 and K2 closure, the operating voltage of the every phase winding of motor is 185V(220-2 * 17.5); When contactor KY, K00 and K3 closure, the operating voltage of the every phase winding of motor is 167.5V(220-3 * 17.5).Amount to 11 pressure regulation gears.
Pressure regulation base level potential difference value (Vn) and transformer tapping number (Cn), pressure regulation gear number (Dn) can calculate according to following method: Dn=3 * (Cn+1)+2; (annotating Dn, Cn all is positive integer), i.e. 8 gears of 1 tap of transformer; 11 gears of 2 taps; 14 gears of 3 taps.Basic voltage level difference Vn=
Concrete numerical value can be considered suitably to round up for the transformer coiling is convenient.As being 17.5 volts in this embodiment, two taps, promptly during Cn=2, Vn=17.5V; And concrete step-down value should be when the dihedral connection
* 17.5=30V.
The technical scheme that adopts this embodiment to provide, the operating voltage that the motor of oil pumper is obtained is after detecting the motor operating voltage operating current by basic control unit, finish a series of computings and send command adapted thereto driving electromagnetic actuator through plug-in, motor is operated under the most adaptive the most energy-conservation operating voltage, thereby realizes best energy-saving effect.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (5)
1. a used for oil-field oil pumper pressure regulating energy-saving actuator is characterized in that, comprising:
The basis control unit is used for sending to electromagnetic actuator according to the variation of the current/voltage value of the control command of user input or detection the control command of the input voltage of adjusting motor;
Electromagnetic actuator, the control command that is used for sending according to basic control unit is adjusted the output voltage of three-phase transformer, and the start-stop of control motor and the conversion of motor stator winding connection De Xing ﹑ angle;
Three-phase transformer is used for adjusting the liter of output voltage or falling the operating voltage that changes motor by electromagnetic actuator.
2. used for oil-field oil pumper pressure regulating energy-saving actuator according to claim 1, it is characterized in that, described three-phase transformer is provided with three groups of elementary windings and six contactors, be provided with four lead-out wires in every group of elementary winding, described four lead-out wires connect a contactor that is connected with the three phase mains phase line respectively, and two of the first and last in described four lead-out wires also connect a contactor that is connected with the zero line of three phase mains respectively.
3. used for oil-field oil pumper pressure regulating energy-saving actuator according to claim 2 is characterized in that, the operating voltage of the every phase winding of described motor is obtained by the star angle conversion of motor winding and the predetermined liter or the combination of step-down value of cooperation transformer.
4. used for oil-field oil pumper pressure regulating energy-saving actuator according to claim 1 is characterized in that, the big electric current winding of the secondary low-voltage of described three-phase transformer is serially connected in the electric power loop of motor.
5. used for oil-field oil pumper pressure regulating energy-saving actuator according to claim 1 is characterized in that, described basic control unit comprises:
Detection sub-unit is used for by the real-time testing electric current of the threephase current transformer of inside; And the supply voltage of detection input and the operating voltage of output;
The master control subelement is used for calculating the input voltage that obtains motor to be adjusted according to the supply voltage of the operating current that detects in real time, input and the operating voltage of output;
Show subelement, be used to show the working current value of real-time detection, the supply voltage value of input, the motor operating voltage value and the failure code of output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201108725U CN201956965U (en) | 2011-04-15 | 2011-04-15 | Voltage adjusting energy-saving dragging device used by oil field pumping unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201108725U CN201956965U (en) | 2011-04-15 | 2011-04-15 | Voltage adjusting energy-saving dragging device used by oil field pumping unit |
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| Publication Number | Publication Date |
|---|---|
| CN201956965U true CN201956965U (en) | 2011-08-31 |
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| CN2011201108725U Expired - Fee Related CN201956965U (en) | 2011-04-15 | 2011-04-15 | Voltage adjusting energy-saving dragging device used by oil field pumping unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330054A (en) * | 2016-10-12 | 2017-01-11 | 栾若熙 | Voltage-regulating and energy-saving dragging device for beam-pumping unit |
-
2011
- 2011-04-15 CN CN2011201108725U patent/CN201956965U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330054A (en) * | 2016-10-12 | 2017-01-11 | 栾若熙 | Voltage-regulating and energy-saving dragging device for beam-pumping unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20130415 |