CN201928226U - Screw pump motor direct-driving device embedded in motor reverse rotation suppression unit - Google Patents
Screw pump motor direct-driving device embedded in motor reverse rotation suppression unit Download PDFInfo
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- CN201928226U CN201928226U CN2011201022438U CN201120102243U CN201928226U CN 201928226 U CN201928226 U CN 201928226U CN 2011201022438 U CN2011201022438 U CN 2011201022438U CN 201120102243 U CN201120102243 U CN 201120102243U CN 201928226 U CN201928226 U CN 201928226U
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Abstract
The utility model relates to a screw pump motor direct-driving device embedded in an intelligent motor reverse rotation suppression unit, which mainly resolves the problem that motor reverse rotation is out of control when in poor contact of cables or disconnection fault in the existing reverse rotation prevention technology. The screw pump motor direct-driving device is characterized in that reverse rotation suppression unit is placed in a motor terminal box and integrated with the motor terminal box, the motor terminal box is mounted in a motor shell, a three-phase rectifying bridge is connected to a motor wiring terminal of the motor terminal box, the motor wiring terminal is connected with a motor intelligent control box via a cable, the three-phase rectifying bridge is successively connected with an IGBT (insulated gate bipolar transistor) and a resistor, the IGBT is successively connected with an IGBT driving combination and a microcomputer control panel, the three-phase rectifying bridge is connected with a winding voltage waveform detecting circuit, the microcomputer control panel is respectively connected with a current detecting loop and an energy storage power source, and the energy storage power source is connected with a position signal terminal strip. Even if a cable of a motor is disconnected and separated from control of a controller, the screw pump motor direct-driving device can reliably suppress reverse rotation speed of the motor until safe shut-down.
Description
Technical field
The utility model relates to screw pump motor direct-drive device in the oil field machinery oil field, and particularly a kind of motor counter-rotating suppresses the built-in screw pump electric-machine directly-driven device in unit.
Background technology
In the oil field machinery oil field, it is electromagnetic braking and the brake technique of energy or the combination of several technology that the anti-reverse technology of screw pump motor direct-drive device generally adopts, and the scheme that is adopted as patent ZL-2009 2 0146334.4 is exactly typical example.So-called electromagnetic braking be by intelligent controller to the electric current that the magnetic direction of a generation of motor windings output weakens the motor speed reversal, reach the effect of restriction counter-rotating; And brake technique of energy is to adopt one to consume the electric energy that is produced when motor is in regenerative power generation state to several high-power resistances and make motor be in on-position, it is slowed down gradually shut down.The common feature of this class technology is that electronic devices and components such as brake resistance are installed in the intelligent control box, the speed reversal limitation function is realized by intelligent control box, for security needs, intelligent control box is far away apart from rice surplus the motor about ten, to the driving of motor and braking action is to realize by being connected surplus ten between intelligent control box and motor windings terminal box the long power cable of rice, if when in a single day cable loose contact or disconnection fault take place in operating device, it is poor gently then to produce braking effect, heavy then cause the counter-rotating limitation function ineffective, cause motor to produce high speed reverse rotation and cause disconnected bar or take off bar even the serious consequence of security incident takes place.
Summary of the invention
The utility model very easily causes counter-rotating to suppress problem out of control and provides a kind of motor counter-rotating to suppress the built-in screw pump electric-machine directly-driven device in unit when being to overcome the existing counter-rotating inhibition technology generation cable loose contact that exists in the background technology or disconnection fault; all electronic devices and components that the counter-rotating of this device suppresses unit formation functional module all are built in the connection box for motor; intelligent controller works alone; both made at the motor cable broken string and broken away under the extreme condition of controller control; the speed reversal that also can suppress motor reliably; its rotating speed is reduced gradually, until safe shutdown.
The invention for solving the technical problem can reach by following technical solution: this motor counter-rotating suppresses the built-in screw pump electric-machine directly-driven device in unit and comprises that counter-rotating suppresses unit, screw pump direct driving motor, connection box for motor, intelligent motor control cabinet, position signalling terminal board, motor three-phase winding connection terminal are arranged in the connection box for motor, and described counter-rotating suppresses the unit and comprises that three-phase commutation bridge, IGBT drive combination, microcomputer control panel, current detection circuit, IGBT, accumulation power supply, resistance, winding voltage waveform detection circuit; Counter-rotating inhibition unit places in the connection box for motor and connection box for motor is an one, is equipped with the connection box for motor that suppresses the unit that reverses and is installed in screw pump direct driving motor enclosure interior; Counter-rotating suppresses the connecting terminal of motor of the three-phase commutation bridge cable connection connection box for motor of unit, and the connecting terminal of motor cable connects the intelligent motor control cabinet; Three-phase commutation bridge connects IGBT and resistance successively, and IGBT connects IGBT successively and drives combination, microcomputer control panel; The input of three-phase commutation bridge connects the input of winding voltage waveform detection circuit; Microcomputer control panel connects the output of current detection circuit, accumulation power supply respectively; Accumulation power supply link position signal terminal row, position signalling terminal board cable connects the position signalling terminal board in the terminal box; Current detection circuit is in parallel with resistance; The output of winding voltage waveform detection circuit connects microcomputer control panel.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: this motor counter-rotating suppresses the built-in screw pump electric-machine directly-driven device in unit owing to adopt such scheme, counter-rotating suppress the unit be fixed on the electric machine casing terminal box inner and with terminal box be one, directly be connected with three-phase winding connection terminal, rotor-position signal terminal board in the connection box for motor; Three-phase winding connection terminal, rotor-position signal terminal board are connected with intelligent control box by another long cable respectively then; therefore the reliability of anti-reverse control system increases substantially; break away under the extreme condition of controller control at the motor cable broken string; still can apply anti-reverse braking control reliably, until safe shutdown.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is that connection box for motor is the structural representation of one with counter-rotating inhibition unit;
Accompanying drawing 3 is that counter-rotating of the present utility model suppresses unit electricity theory diagram.
Among the figure: the 1-counter-rotating suppresses unit, 2-screw pump direct driving motor, 3-connection box for motor, 4-position signalling terminal board, 5-intelligent motor control cabinet, 6-connecting terminal of motor, 7-position signalling terminal board, the 8-three-phase commutation bridge, 9-IGBT drives combination, the 10-microcomputer control panel, 11-current detection circuit, 12-IGBT, the 13-accumulation power supply, 14-resistance, 15-winding voltage waveform detection circuit, 16-wireless remote control receiving unit, 17-wireless remote control emitting module.
Embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
Accompanying drawing 1 in conjunction with the accompanying drawings 2, shown in the accompanying drawing 3, this motor counter-rotating suppresses the built-in screw pump electric-machine directly-driven device in unit and comprises that counter-rotating suppresses unit 1, screw pump direct driving motor 2, connection box for motor 3, intelligent motor control cabinet 5, position signalling terminal board 5, motor three-phase winding connection terminal 6 are arranged in the connection box for motor 3, and described counter-rotating suppresses unit 1 and comprises that it is insulated gate bipolar transistor that three-phase commutation bridge 8, IGBT drive combination 9, microcomputer control panel 10, current detection circuit 11, IGBT 12(), accumulation power supply 13, resistance 14, winding voltage waveform detection circuit 15; Counter-rotating inhibition unit 1 places in the connection box for motor 3 and is one with connection box for motor 3, and the connection box for motor that is equipped with counter-rotating inhibition unit 1 is installed in electric machine casing inside; Counter-rotating suppresses the connecting terminal of motor 6 of the three-phase commutation bridge 8 cables connection connection box for motor 3 of unit 1, and connecting terminal of motor 6 cables connect intelligent motor control cabinet 5; Three-phase commutation bridge 8 connects IGBT 12 and resistance 14 successively, and IGBT12 connects IGBT successively and drives combination 9, microcomputer control panel 10; The input of three-phase commutation bridge 8 connects the input of winding voltage waveform detection circuit 15; Microcomputer control panel 10 connects the output of current detection circuit 11, accumulation power supply 13 respectively; Accumulation power supply 13 link position signal terminals row 7, position signalling terminal board 7 cables connect the position signalling terminal board 4 in the terminal box 3; Current detection circuit 11 is in parallel with resistance 14; The output of winding voltage waveform detection circuit 15 connects microcomputer control panel 10, and microcomputer control panel 10 connects the output of remote control receiving unit 16, is connected to wireless remote control emitting module 17 in the intelligent control box 5.
Described wireless remote control emitting module 17 is installed in the intelligent motor control cabinet 5 or suitable position and be connected with it; make intelligent motor control cabinet 5 when starting, stopping screw pump direct driving motor 2 or protection shutdown; all can be by wireless remote control emitting module 17 to the corresponding code of wireless remote control receiving unit 16 emissions; suppress auxiliary signal and the wake-up signal that screw pump direct driving motor 2 operating states are judged in unit 1 as counter-rotating, also can manually be provided with simultaneously 17 emissions of wireless remote control emitting module wake up with sleep signal for debugging or other application.The intelligent electric machine counter-rotating suppresses the unit will enter resting state automatically after finishing shutdown counter-rotating inhibition task; the signal that still can accept wireless remote control emitting module 17, accumulation power supply 13, winding voltage waveform detection circuit 15 this moment is waken up; when the long period shuts down; to enter deep sleep as a couple of days or a couple of days when above; only can accept the wake-up signal that wireless remote control emitting module 17 is sent this moment, further saves electric energy.Accumulation power supply 13 provides working power for the intelligent electric machine counter-rotating suppresses the unit, can obtain electric energy from position signalling terminal board 7, winding voltage waveform detection circuit 15 and replenish, keep operate as normal when operate as normal.
When install at this device scene, the polished rod load carrier is also being used bolted on the original blowout preventer flange of vertical seat dress well head down, polished rod with specific purpose tool with polished rod by well head through the endoporus of blowout preventer, load carrier, motor-hollow axle, seal combination, on mention suitable height and transfer square clamp fasteningly, carry out and transfer, block the end that is pressed in seal combination after the convex-concave mouth is aimed in the sealing back; Connecting terminal of motor 6 in the motor windings terminal box 3 and position signalling terminal 4 by cable be fixed on that the respective terminal in the intelligent control box 5 outside the rice is sub surplus motor ten is connected; Wireless remote control emitting module 17 is installed in the intelligent motor control cabinet 5 or suitable position and be connected with it.
It is as follows that this intelligent electric machine counter-rotating suppresses the built-in screw pump electric-machine directly-driven device course of work in unit: after intelligent control box 5 powers on, press the initiating key of start button or keyboard, intelligent control box 5 beginnings constantly receive the position signalling that the motor rotor position signal cable transmits by position signalling terminal board 4, the slow rotation of control motor accelerates to the rotating speed of setting gradually, normal operation; Press behind stop button or the stop key and motor overload etc. protected when shutting down, and intelligent control box control motor slowly slows down until shutdown; Be in resting state in the time of electric motor starting, counter-rotating suppresses unit 1 and is waken up, microcomputer control panel 10 is constantly by 15 detectings of winding voltage waveform detection circuit, analyze the driving voltage or the induced potential of motor windings, judge the operating state of motor, in case find disappearance or unusual, counter-rotating, controlling IGBT immediately drives combination 9 IGBT12 is in conducting state, be in the strongest on-position and pass through current detection circuit 11, resistance 14 detects discharging current, and having or not or the big or small state of judging motor according to electric current, and regulate the conducting of IGBT12 according to this and the ratio of ending is a duty ratio, the restriction speed reversal; Discharging current reduces then rotating speed and rises, and discharging current increases then that rotating speed reduces, and by reducing duty ratio gradually, change discharging current, weakening inhibition strength, polished rod, sucker rod elastic torque is discharged gradually, the motor shutdown of slowly slowing down.
No matter starting; in shutdown or the course of normal operation; counter-rotating suppresses immediately motor to be applied counter-rotating when the motor counter-rotating is found in the unit in a single day and suppresses control; the direct voltage that the electric energy that drive motor p-m rotor counter-rotating generating produced when pump rod was discharged elastic torque is exported after three-phase commutation bridge 8 rectifications is discharged through resistance 14 by IGBT; constantly detect discharging current by current detection circuit 11 simultaneously; adjust the size of discharging current according to rotating speed of motor and promptly adjust severity of braking; and with the permission speed reversal of setting relatively; control the ON time of electronic switch IGBT according to the size of difference; in the current value range that motor windings allows, motor is implemented electromagnetic braking; rotating speed of motor is slowed down in the scope of setting gradually, make the elastic potential of the sucker rod of screw pump discharge the back gradually until shutdown.When AC system power down or motor cable generation broken string and intelligent control box disorderly closedown, enter motor counter-rotating holddown equally.
Claims (2)
1. a motor counter-rotating suppresses the built-in screw pump electric-machine directly-driven device in unit, comprise that counter-rotating suppresses unit (1), screw pump direct driving motor (2), connection box for motor (3), intelligent motor control cabinet (5), position signalling terminal board (5) is arranged in the connection box for motor (3), motor three-phase winding connection terminal (6) is characterized in that: described counter-rotating suppresses unit (1) and comprises three-phase commutation bridge (8), IGBT drives combination (9), microcomputer control panel (10), current detection circuit (11), IGBT (12), accumulation power supply (13), resistance (14), winding voltage waveform detection circuit (15); Counter-rotating inhibition unit (1) places in the connection box for motor (3) and is one with connection box for motor (3), and the connection box for motor that is equipped with counter-rotating inhibition unit (1) is installed in screw pump direct driving motor (2) enclosure interior; Counter-rotating suppresses the connecting terminal of motor (6) of three-phase commutation bridge (8) the cable connection connection box for motor (3) of unit (1), and connecting terminal of motor (6) cable connects intelligent motor control cabinet (5); Three-phase commutation bridge (8) connects IGBT (12) and resistance (14) successively, IGBT(12) connects IGBT successively and drives combination (9), microcomputer control panel (10); The input of three-phase commutation bridge (8) connects the input of winding voltage waveform detection circuit (15); Microcomputer control panel (10) connects the output of current detection circuit (11), accumulation power supply (13) respectively; Accumulation power supply (13) link position signal terminal row (7), position signalling terminal board (7) cable connects the position signalling terminal board (4) in the terminal box (3); Current detection circuit (11) is in parallel with resistance (14); The output of winding voltage waveform detection circuit (15) connects microcomputer control panel (10).
2. a kind of motor counter-rotating according to claim 1 suppresses the built-in screw pump electric-machine directly-driven device in unit, it is characterized in that: described microcomputer control panel (10) connects the output of remote control receiving unit (16), is connected to wireless remote control emitting module (17) in the described intelligent control box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201022438U CN201928226U (en) | 2011-04-09 | 2011-04-09 | Screw pump motor direct-driving device embedded in motor reverse rotation suppression unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201022438U CN201928226U (en) | 2011-04-09 | 2011-04-09 | Screw pump motor direct-driving device embedded in motor reverse rotation suppression unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201928226U true CN201928226U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201022438U Expired - Lifetime CN201928226U (en) | 2011-04-09 | 2011-04-09 | Screw pump motor direct-driving device embedded in motor reverse rotation suppression unit |
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| CN (1) | CN201928226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633896A (en) * | 2013-10-09 | 2014-03-12 | 天津安一机电科技有限公司 | Rare earth permanent-magnet moment motor flexible reverse braking control method |
-
2011
- 2011-04-09 CN CN2011201022438U patent/CN201928226U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633896A (en) * | 2013-10-09 | 2014-03-12 | 天津安一机电科技有限公司 | Rare earth permanent-magnet moment motor flexible reverse braking control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |