CN201358762Y - Improved oil extractor with energy-saving realization capability - Google Patents
Improved oil extractor with energy-saving realization capability Download PDFInfo
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- CN201358762Y CN201358762Y CNU2009201399600U CN200920139960U CN201358762Y CN 201358762 Y CN201358762 Y CN 201358762Y CN U2009201399600 U CNU2009201399600 U CN U2009201399600U CN 200920139960 U CN200920139960 U CN 200920139960U CN 201358762 Y CN201358762 Y CN 201358762Y
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- motor
- way clutch
- belt pulley
- oil pumper
- conservation
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Abstract
The utility model belongs to improvement of an oil extractor structure, in particular to an improved oil extractor with energy-saving realization capability, which comprises a horsehead, a walking beam and a speed reducer. The middle part of a balance arm is hinged with the lower end of a connecting rod of which the upper end is hinged with the back end of the walking beam; the front end of the balance arm is fixedly connected with a balance weight; a big belt pulley driving the balance weight to rotate is connected with a motor-driven small belt pulley by a driving belt in a rotation movable fit way; and a frequency converter is connected with a motor by a circuit, wherein an output shaft of the motor is matched and fixedly assembled with an inner ring of a one-way clutch, and an outer ring of the one-way clutch is fixedly assembled with the small belt pulley. In the utility model, the motor of a walking beam type oil extractor widely used in oil fields can be separated from braking work state effectively, and the frequency converter can be used for controlling the motor of the oil extractor to conduct stepless frequency-conversion speed regulation, without the need of externally connecting any accessories such as a braking unit, a braking resistor, a power regeneration current transformer and the like.
Description
Technical field
The utility model belongs to the improvement of oil pumper structure, particularly a kind ofly realizes energy-conservation modified oil pumper.
Background technology
In oil exploration industry, the oil pumper visual plant that is absolutely necessary.Beam pumping unit is because simple in structure, and mechanical property is good, is used widely on the oil field.Because the work characteristics of oil pumper, oil pumper are at the down stroke duration of work, motor can enter the on-position power consumption, so there is the very big energy saving space in oil pumper.Aspect oil pump energy-saving, once adopted the energy-conservation mode of step-down, change as star-delta; Silicon-controlled voltage regulation etc., but because hypotensive point or switching point are uncontrollable, this technology does not obtain promoting; Occurred technology such as high slip motor and two power motors afterwards again, but, do not applied owing to various reasons such as technology imperfections.
In recent years, the reduction significantly of the extensive use of frequency converter and price, how people is applied to frequency converter on the oil pumper if beginning one's study, improve the function of oil pumper, makes it not only energy-conservation, can also stepless time adjustment.But the characteristics of oil pumper working method make the pumping-unit motor laod unbalance, and the cycle alters a great deal, and when motor entered on-position, frequency converter was shut down because of overvoltage protection, can't work on.Domestic the oil pumper variable frequency energy saving reforming has been done a large amount of trials; but it is all not too successful; subject matter is: because the mechanical property of oil pumper itself; pumping-unit motor might enter the braking duty, when on-position, " pump up voltage " can occur on the inner dc bus of frequency converter; cause DC bus-bar voltage to raise; when d-c bus voltage value reached the overvoltage protection value, frequency converter entered guard mode and shuts down, and caused the shutdown of pumping machine can't operate as normal.
Be sort this problem out; the measure that people take is brake unit and the braking resistor that the frequency converter manufacturer production is installed; the somebody has also taked to strengthen frequency converter DC side electrochemical capacitor and the measure that reduces the braking resistor value especially; unnecessary electric energy when consuming the dc bus overvoltage by brake unit and braking resistor; reached and eliminated the dc bus overvoltage, prevented frequency converter protection shutdown.But this thought that suppresses the superpotential purpose of dc bus and oil pump energy-saving consumption reduction by consumed power is contrary.The oil pumper frequency-converter device that adopts this mode can only be speed governing, and is not only not energy-conservation, increased power consumption on the contrary, and in actual motion, effect is undesirable, therefore do not obtain promoting.
Be sort this problem out, people have installed power supply regenerative converter again on frequency converter.This also is the planning standard product of frequency converter producer.Its effect is that the overvoltage on the frequency changer direct current bus is fed back to common frequency power network through inversion, has remedied the deficiency of brake unit and braking resistor, but has cost an arm and a leg, and effect is undesirable, does not therefore obtain promoting.
Data shows, uses frequency converter on the oil pumper and carries out energy-conservation and speed governing, and the difficult point of existence does not solve so far, and useless the obtaining of the utilization of frequency converter on oil pumper promoted.
The utility model content
The purpose of this utility model is to provide a kind of energy-conservation modified oil pumper of realizing, can make the motor of widely used beam pumping unit on the oil field effectively break away from the braking duty, thereby reach purpose of energy saving; In addition, because pumping-unit motor has broken away from the braking duty, just can carry out stepless frequency control, and not need annexes such as external any brake unit, braking resistor, power supply regenerative converter with the Frequency Converter Control pumping-unit motor.
The purpose of this utility model is achieved in that a kind of energy-conservation modified oil pumper of realizing, comprise the air switch and the horse head that are connected with the power supply port, walking beam and reducer, the counter-jib middle part is hinged with the connecting rod lower end, this small end and walking beam rear end are hinged, counter-jib front end and equilibrate counterweight Joint, the big belt pulley that the driven equilibrium balancing weight rotates is connected with being rotated by motor-driven small belt pulley movingly by driving-belt, frequency converter is connected with motor by circuit, the output shaft of motor matches with the interior ring of one-way clutch and installs, and the outer shroud of one-way clutch installs mutually with small belt pulley.
The utility model is owing to cooperate between the small belt pulley of oil pumper and motor output shaft one-way clutch is installed, i.e. freewheel clutch, and in the work of oil pumper down stroke, motor can not enter the braking duty; In oil pumper cycling process, motor is in effective duty all the time, in addition, frequency converter does not add any brake unit and braking resistor, the inner dc bus overvoltage problem of frequency converter when together handling because of the motor braking state with device such as power supply regenerative converter, so can directly apply to oil pumper stepless speed regulation, and can really reach effectively energy-conservation technique effect.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the explanation schematic diagram of the utility model on beam pumping unit;
Fig. 2 is the structural representation of the utility model one-way clutch installation site;
Fig. 3 is the utility model embodiment 1 structural representation;
Fig. 4 is the utility model embodiment 2 structural representations;
Fig. 5 is the utility model embodiment 3 structural representations;
Fig. 6 is for realizing the schematic diagram that is electrically connected of the utility model frequency control.
The specific embodiment
A kind ofly realize energy-conservation modified oil pumper, extremely shown in Figure 5 as Fig. 1, comprise the air switch QF (being line breaker) and the horse head that are connected with the power supply port, walking beam 1 and reducer, counter-jib 2 middle parts and connecting rod lower end are hinged, this small end and walking beam 1 rear end are hinged, counter-jib 2 front ends and equilibrate counterweight Joint, the big belt pulley 3 that the driven equilibrium balancing weight rotates is connected with being rotated by motor-driven small belt pulley 5 movingly by driving-belt 4, frequency converter 6 is connected with motor 15 by circuit, the output shaft 8 of motor 9 matches with the interior ring 11 of one-way clutch 7 and installs, the outer shroud 10 of one-way clutch 8 installs mutually with small belt pulley 5, and one-way clutch 7 is contract piece formula one-way clutch or roller-type one way clutch.
As shown in Figure 3, specific embodiment (1): the interior ring 11 of one-way clutch 7 passes through key 13 Joints with the output shaft of motor 92, the outer shroud 10 of one-way clutch 7 matches affixed with small belt pulley 5 by interior hexagonal screw rod 12, perhaps as shown in Figure 4, the outer shroud 10 of one-way clutch 7 passes through solder joint 14 Joints with small belt pulley 5.
As shown in Figure 5, specific embodiment (2): the interior ring 11 of one-way clutch 7 passes through key 13 Joints with the output shaft of motor 92, outer shroud 10 end faces of one-way clutch 7 are by the inner face Joint of interior hexagonal screw rod 12 with jackshaft 17, jackshaft 17 matches affixed by key 15 with small belt pulley 5, installing locknut 16 by threaded engagement on the outer face of jackshaft, the cooperation that contacts with the outer face of small belt pulley 5 of the inner face of locknut 16, the effect of locknut prevents the loose shift of small belt pulley 5.。
The one-way clutch that is installed additional claims freewheel clutch again, is a kind of basic mechanical part commonly used.The work characteristics of one-way clutch is, when power output (interior ring or outer shroud) the rotating ratio power source (outer shroud or interior ring) of one-way clutch was also fast, clutch was in the state of freeing, and inner and outer ring is without any interaction relation, rotate with different rotating speeds separately, on the contrary the inner and outer ring locking.When motor output shaft during as the external outputting power of power source, motor output shaft rotates, the inner and outer ring locking of one-way clutch, and the small belt pulley that is connected with External Ring of One-way Clutch is with the same rotational speed of motor and drag the exterior mechanical acting; Exterior mechanical oppositely drags belt lace along turning to of motor and rotates, oppositely drag under the effect this, when the rotating speed of belt lace and External Ring of One-way Clutch surpasses the rotating speed of the motor output shaft that links to each other with interior ring, one-way clutch is in the state of freeing, inner and outer ring is without any interaction relation, inner and outer ring rotates with different rotating speeds separately, and motor can not enter on-position.The on-position of motor has obtained effective elimination.
The realization of oil pump energy-saving operation:
Because the oil rig weight that oil pumper drags is very big, for alleviating motor load, adds balance weight and carry out counterweight on crank, makes walking beam fulcrum both sides weight suitable, reaches balance.In real work, accomplish that complete equipilibrium is impossible, require the degree of balance usually in 15%, and oil rig stresses.
Oil pumper drags oil rig when being operated in up stroke, and motor drags the oil pumper acting, and motor is in motoring condition; When being operated in down stroke, because walking beam both sides imbalance, oil rig stresses, and oil rig is under the effect of gravity, and its gravity passes through walking beam, connecting rod, and crank, reducer, belt, reverse dragging motor, drawing direction is identical with motor steering.Oppositely drag under the effect this, the load of the motor no-load running that lightens gradually, motor still is operated in motoring condition during this.The effect of oppositely dragging continues to increase, and when the speed of dragging motor rotation surpassed the synchronous rotational speed of motor, motor entered on-position, and consumed power.Oil pumper stroke up and down is an one-period, and the duty of pumping-unit motor also changes in " electronic-zero load-braking-zero load-electronic " cycle.Motor is when the braking duty, and consumed power causes the waste of the energy.Use method provided by the present invention, between the output shaft of pumping-unit motor and small belt pulley, install one-way clutch additional.The interior ring of one-way clutch is connected with key with motor output shaft, is power source; Outer shroud is connected with small belt pulley, when being the power output.When oil pumper is operated in up stroke, the inner and outer ring of one-way clutch locking, the small belt pulley that is connected with External Ring of One-way Clutch is with the same rotational speed of motor and drag the oil pumper acting, and motor is in motoring condition; When oil pumper is operated in down stroke, oppositely drag under the effect this, the rotating speed of small belt pulley is increasing, when the speed of dragging motor rotation surpasses the synchronous rotational speed of motor, one-way clutch is in the state of freeing, and inner and outer ring is without any interaction relation, and the small belt pulley that links to each other with outer shroud rotates with the speed greater than the motor synchronous rotating speed, therefore pumping-unit motor can not enter on-position, and the on-position of motor has obtained effective elimination.Stroke is in the work period up and down at oil pumper, and the duty of motor changed in " electronic-unloaded-electronic-" cycle, had not had on-position, and the power consumption when having eliminated braking has really been realized energy-saving run.
Between the input port of air switch QF that is connected with the power supply port and motor 9, be provided with on two parallel circuits, wherein be connected in series A.C. contactor KM successively on a parallel circuit
1With A.C. contactor KM
3, at A.C. contactor KM
1With A.C. contactor KM
3Between circuit on be connected in series frequency converter 6; Be connected in series A.C. contactor KM on another parallel circuit successively
2With motor overload protector KH.
As shown in Figure 6, L
1, L
2, L
3Be the three phase mains port of power supply port, R, S, T are the three-phase input ends of frequency converter 6, and U, V, W are the three-phase output ends of frequency converter 6, and control section is by frequency converter, air switch QF, A.C. contactor KM
1, KM
2, KM
3Form with motor overload protector KH, be electrically connected as Fig. 6; The not external any brake unit of frequency converter 6, devices such as braking resistor and power supply regenerative converter.Circuit can be realized the conversion of frequency conversion and power frequency operation pattern by the action of A.C. contactor, A.C. contactor KM
1And KM
3Be in converting operation state, A.C. contactor KM during adhesive simultaneously
2Be in the power frequency operation state during adhesive, A.C. contactor KM
1, KM
3With A.C. contactor KM
2Between interlock circuit by control circuit make it adhesive simultaneously, when being operated in variable mode,, can realize the stepless time adjustment of oil pumper by changing frequency.When frequency converter failure, the power frequency pattern can be used as standby mode, emergency operating.
The realization of oil pumper frequency control:
Frequency converter can can't be worked because dc bus " regenerative voltage " problem causes overvoltage protection to shut down during the motor braking state.Install one-way clutch additional between motor output shaft of the present utility model and small belt pulley, make in the work of oil pumper down stroke, motor can not enter the braking duty.In oil pumper cycling process, motor is in effective duty all the time, therefore, frequency converter do not add any brake unit and devices such as braking resistor and power supply regenerative converter when handling because of the motor braking state the inner dc bus overvoltage problem of frequency converter directly apply to the oil pumper stepless time adjustment.The speed governing of frequency converter acts in the oil pumper up stroke effective, and down stroke then is to rely on oil rig action of gravity freedom descending.
The beneficial effect that the utility model is obtained:
Between the output shaft of pumping-unit motor and belt pulley, install one-way clutch additional.
1. effectively break away from the braking duty of motor, and entered the unloaded operation state, can save electricity-saving mechanism Moving state is the electric energy that consumes, and energy-saving effect is remarkable;
2. the braking duty that has effectively broken away from motor, when using frequency converter timing, the inner direct current of frequency converter Bus can not produce " pump up voltage ", can avoid frequency converter to stop because of the overvoltage protection that " pump up voltage " causes Machine. Therefore, frequency converter does not need to add any brake unit in the speed governing of beam pumping unit is used, system The devices such as moving resistance and power supply regenerative converter. With frequency converter beam pumping unit is carried out speed regulating control, change Become with the mode of speed regulation of changing the different-diameter small belt pulley, reduced labour intensity.
3. oil pumper is in the down stroke duty, owing to there is not the braking action of motor, the oil rig downstream rate is fast, oil pumper in stroke whole work period up and down, more than fast pattern work down slowly.Speed uplink is slow, the binding time of the down-hole crude oil that equaled to extend, helps improving the degree of filling of oil well pump; Downstream rate is fast, has equaled to shorten the time of a work period of oil pumper, has improved the suction number of times of oil pumper unit interval.The utility model helps providing the operating efficiency of oil pumper, helps the crude oil volume increase.
Claims (7)
1, a kind ofly realize energy-conservation modified oil pumper, comprise the air switch QF and the horse head that are connected with the power supply port, walking beam (1) and reducer, counter-jib (2) middle part is hinged with the connecting rod lower end, this small end and walking beam (1) rear end is hinged, counter-jib (2) front end and equilibrate counterweight Joint, the big belt pulley (3) that the driven equilibrium balancing weight rotates is connected with being rotated by motor-driven small belt pulley (5) movingly by driving-belt (4), frequency converter (6) is connected with motor (15) by circuit, it is characterized in that: the output shaft (8) of motor (9) matches with the interior ring (11) of one-way clutch (7) and installs, and the outer shroud (10) of one-way clutch (8) installs mutually with small belt pulley (5).
2, according to claim 1ly realize energy-conservation modified oil pumper, it is characterized in that: one-way clutch (7) is contract piece formula one-way clutch or roller-type one way clutch.
3, according to claim 1ly realize energy-conservation modified oil pumper, it is characterized in that: the interior ring (11) of one-way clutch 7 passes through key (13) Joint with the output shaft (2) of motor (9), and the outer shroud (10) of one-way clutch (7) matches affixed with small belt pulley (5) by interior hexagonal screw rod (12).
4, according to claim 1ly realize energy-conservation modified oil pumper, it is characterized in that: the interior ring (11) of one-way clutch (7) passes through key (13) Joint with the output shaft (2) of motor (9), and the outer shroud (10) of one-way clutch (7) passes through solder joint (14) Joint with small belt pulley (5).
5, according to claim 1ly realize energy-conservation modified oil pumper, it is characterized in that: the interior ring (11) of one-way clutch (7) passes through key (13) Joint with the output shaft (2) of motor (9), outer shroud (10) end face of one-way clutch (7) is by the inner face Joint of interior hexagonal screw rod (12) with jackshaft (17), and jackshaft (17) matches affixed by key (15) with small belt pulley (5).
6, according to claim 5ly realize energy-conservation modified oil pumper, it is characterized in that: installing locknut (16) by threaded engagement on the outer face of jackshaft, the cooperation that contacts with the outer face of small belt pulley (5) of the inner face of locknut (16).
7, according to claim 1ly realize energy-conservation modified oil pumper, it is characterized in that: between the input port of air switch QF that is connected with the power supply port and motor (9), two parallel circuits are being set, wherein are being connected in series A.C. contactor KM successively on a parallel circuit
1With A.C. contactor KM
3, at A.C. contactor KM
1With A.C. contactor KM
3Between circuit on be connected in series frequency converter (6); Be connected in series A.C. contactor KM on another parallel circuit successively
2With motor overload protector KH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201399600U CN201358762Y (en) | 2009-03-17 | 2009-03-17 | Improved oil extractor with energy-saving realization capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201399600U CN201358762Y (en) | 2009-03-17 | 2009-03-17 | Improved oil extractor with energy-saving realization capability |
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| Publication Number | Publication Date |
|---|---|
| CN201358762Y true CN201358762Y (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201399600U Expired - Fee Related CN201358762Y (en) | 2009-03-17 | 2009-03-17 | Improved oil extractor with energy-saving realization capability |
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| Country | Link |
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| CN (1) | CN201358762Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951017A (en) * | 2010-08-13 | 2011-01-19 | 蚌埠市禹源环保科技有限公司 | Power frequency automatic switching device for preventing unplanned shutdown of motor |
| CN102679119A (en) * | 2012-05-25 | 2012-09-19 | 南京贝奇尔机械有限公司 | Balanced beam-pumping unit centralized lubricating system |
-
2009
- 2009-03-17 CN CNU2009201399600U patent/CN201358762Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951017A (en) * | 2010-08-13 | 2011-01-19 | 蚌埠市禹源环保科技有限公司 | Power frequency automatic switching device for preventing unplanned shutdown of motor |
| CN102679119A (en) * | 2012-05-25 | 2012-09-19 | 南京贝奇尔机械有限公司 | Balanced beam-pumping unit centralized lubricating system |
| CN102679119B (en) * | 2012-05-25 | 2014-10-29 | 南京贝奇尔机械有限公司 | Balanced beam-pumping unit centralized lubricating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20091209 Termination date: 20130317 |