CN2919687Y - Electromagnetic brake device for preventing sucker rod of screw pump well from reversing - Google Patents
Electromagnetic brake device for preventing sucker rod of screw pump well from reversing Download PDFInfo
- Publication number
- CN2919687Y CN2919687Y CNU2006201185538U CN200620118553U CN2919687Y CN 2919687 Y CN2919687 Y CN 2919687Y CN U2006201185538 U CNU2006201185538 U CN U2006201185538U CN 200620118553 U CN200620118553 U CN 200620118553U CN 2919687 Y CN2919687 Y CN 2919687Y
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- CN
- China
- Prior art keywords
- control unit
- sucker rod
- screw pump
- igbt
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Positive-Displacement Pumps (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The utility model relates to an equipped surficial-drive device for an oil field screw pump and substantially solves the problem that the service life of the pumping rod is easy to be damaged by the mechanic ratchet wheel and pallet structure used in the prior screw pump well to prevent the pumping rod from the reversal, and the hidden troubles exists. The utility model is characterized in that an electromagnetic braking device is composed of a monolithic computer control unit (U1), an IGBT drive unit (U2) and a variable frequency speed control unit (U3) that are positioned in a driver housing. The IGBT drive unit (U2) consists of 6 groups of Model TLP250 IGBT drive circuits. The drive signal input terminal in each group is connected with the relating output terminal of the monolithic computer in the monolithic computer control unit. The IGBT drive signal output terminal in each group is connected with the conduction-triggering control terminal of a relating insulating grid bipolar transistor in the variable frequency speed control unit. The tri-phase lead terminal of the variable frequency speed control unit (U3) is served as a drive terminal of the screw pump DC electric motor. The device can gradually release the torsional moment produced by the distortion of the transmission rod. The utility model has the advantages the pumping rod service life is not damaged and the braking is safe and precise.
Description
Technical field:
The utility model relates to a kind of ground that is applied on the screw pump of oil field and drives corollary apparatus, especially relates to a kind of brake apparatus that prevents that sucker rod from reversing after stall.
Background technology:
What solution oil was taken out the employing of bar counter-rotating problem in the screw bolt well sucker rod surface drive at present is at well head the click mechanical structure to be installed, but there are the following problems for this anti-reverse mechanism: the one, and click work when screw pump stops, sucker rod becomes inactive state suddenly by normal operation, bar, pipe bear higher shock loading, and bar, pipe are affected useful life.The 2nd, click is subjected to factor affecting such as material to have potential safety hazard.The 3rd, in daily production management, shut down the kinetic energy that sucker rod stores when safeguarding and discharge fully, when the releasing click was spacing, kinetic energy discharged, and security incident easily takes place in the sucker rod counter-rotating.
The utility model content:
In order to solve the problem that adopts ratchet, ratchet mechanical structure to damage sucker rod, tube lifetime easily and have potential safety hazard when existing screw bolt well sucker rod surface drive prevents the sucker rod counter-rotating, the utility model provides a kind of novel screw bolt well sucker rod anti-reverse mechanism, this kind device adopts electromagnetic braking in the time in 30 seconds electromagnetic torque to be reduced gradually, thereby, have and do not damage sucker rod life-span, brake safe characteristic of accurate alleviating gradually because of the moment of torsion of drive link distortion generation and discharging.
The technical solution of the utility model is: the anti-reverse electro-magnetic braking device of this kind screw bolt well sucker rod is arranged in an actuator housing.In this actuator housing, form the anti-reverse electro-magnetic braking device of screw bolt well sucker rod by the following units, these unit are respectively Single-chip Controlling unit, IGBT driver element and frequency control unit.
Wherein the Single-chip Controlling unit mainly is made of single-chip microcomputer, and four signal input parts on it receive respectively and come from three signals that photoelectric position sensor H1, H2, H3 transmit on screw bolt well stall button, the screw pump DC motor.
The frequency control unit is made up of six groups of insulated gate bipolar transistor npn npns, and these six groups of insulated gate bipolar transistor npn npns connect into three-phase full wave rectifier circuit, and its three-phase exit is as drawing the external screw pump DC motor drive end of arrester shell.
The IGBT driver element is made up of six groups of TLP250 type IGBT drive circuits, every group driving signal input is connected to the corresponding output end of single-chip microcomputer in the Single-chip Controlling unit, and every group IGBT drive signal output is connected to the conducting trigger control end of corresponding insulated gate bipolar transistor npn npn in the frequency control unit.
The utlity model has following beneficial effect: because after taking such scheme; when needs are shut down; under the control action of single-chip microcomputer; the frequency control unit becomes the torque state of a control from the speed state of a control; electromagnetic torque reduces gradually in 30 seconds; the moment of torsion that drive link distortion is produced is alleviated gradually and is discharged, reduced shock loading thus, has prolonged the useful life of sucker rod, oil pick-up tube.In addition, behind application this programme, cancel original click mechanical type anti-reverse-rotation structure, simplified the well head design, improved operating safety factor.
Description of drawings:
Accompanying drawing 1 is a composition schematic diagram of the present utility model.
Accompanying drawing 2 is the main circuit connection figure after the utility model is applied to the screw pump motor.
U1-Single-chip Controlling unit, U2-IGBT driver element, U3-frequency control unit.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, the anti-reverse electro-magnetic braking device of this kind screw bolt well sucker rod, comprise an actuator housing, form the anti-reverse electro-magnetic braking device of screw bolt well sucker rod by the following units in this actuator housing, these unit are respectively Single-chip Controlling unit U1, IGBT driver element U2 and frequency control unit U3.
Wherein Single-chip Controlling unit U1 mainly is made of single-chip microcomputer,, can select 89C52 type single-chip microcomputer for use here.Four signal input parts on the 89C52 type single-chip microcomputer receive respectively and come from three signals that photoelectric position sensor H1, H2, H3 transmit on screw bolt well stall button, the screw pump DC motor, we photoelectric position sensor H1, H2, H3 described here is meant and is installed in the interior electro-optical pickoff with the perception rotor-position of screw pump direct current drive machine stator, when motor rotor rotates, photoelectric position sensor H1, H2, the continuous conducting of H3 and end, these signals are transferred to single-chip microcomputer 89C52 by P011, P012, P013.
Frequency control unit U3 is made up of six groups of insulated gate bipolar transistor npn npns, and these six groups of insulated gate bipolar transistor npn npns connect into three-phase full wave rectifier circuit, and its three-phase exit is as drawing the external screw pump DC motor drive end of drive shell.
IGBT driver element U2 is made up of six groups of TLP250 type IGBT drive circuits, every group driving signal input is connected to the corresponding output end of single-chip microcomputer in the Single-chip Controlling unit, and every group IGBT drive signal output is connected to the conducting trigger control end of corresponding insulated gate bipolar transistor npn npn in the frequency control unit.
Select for use TLP250 to drive IGBT and carry out direct current machine commutation, speed regulating control.The gate drive voltage of insulated gate bipolar transistor npn npn IGBT is generally 15V, and the shutoff negative bias voltage is 5V, and control circuit and main circuit isolation are realized by the photoelectricity coupling in TLP250 inside.Must know the position of rotor during the control DC motor, three photoelectric position sensors have been adopted in the direct current machine, rotation along with rotor, photoelectric sensor H1, H2, H3 be in turn conducting and ending constantly, these signals are defeated by single-chip microcomputer 89C52 by PO11, PO12, PO13 oral instructions, single-chip microcomputer output 1,2,3,4,5,6 pin are sent the control corresponding level, when 3 pin of the photoelectric coupling circuit of IGBT drive circuit TLP250 inside receive a low level, the gate drive voltage of IGBT is approximately 15V, the IGBT conducting of this road.When otherwise 3 pin received a high level, the gate drive voltage of IGBT was approximately-5V, and this road IGBT ends.Six IGBT drive circuit TLP250 along with incoming level changes, input time interval variation, can control cut-offfing of each IGBT, thereby realize the monitoring and the adjustment of rotating speed.After pressing screw pump stall button; send halt instruction by single-chip microcomputer; under program control, six outputs constantly prolong cut-offfing at interval of IGBT and constantly reduce control level, and motor output torque constantly reduces; when being lower than the anti-torque of sucker rod counter-rotating kinetic energy generation; sucker rod begins counter-rotating under motor torque control, through 30 seconds time, IGBT ended fully; sucker rod kinetic energy discharges to finish and stops, and realizes charged shutdown.
This kind of device can well solve in network operation braking problem just often, if but when electrical network integral body dead electricity, it just is difficult to bring into play the effect of electromagnetic braking.Solution for this problem; adopt the scheme that in the major loop of screw pump drive motor, increases brake resistance shown in Fig. 2; like this; finish and the sucker rod moment of torsion does not discharge and do not finish when producing counter-rotating when shutdown procedure, motor just converts generator to, has produced induced electromotive force; single-chip microcomputer in the brake will be received reverse signal; if speed reversal is too high, then brake resistance is switched on, thereby realizes braking.
When grid cut-off, control circuit relay main contacts disconnects and cuts off drive circuit, the closed brake resistance that inserts of auxiliary contact, the screw pump sucker rod will produce high speed reverse rotation under the effect of elasticity kinetic energy this moment, and motor is in generating state, and motor windings produces stalling current by brake resistance, the motor speed reversal is reduced, Electric Machine Control sucker rod counter-rotating rotating speed, sucker rod counter-rotating kinetic energy slowly discharges, up to stopping fully.
Claims (2)
1, the anti-reverse electro-magnetic braking device of a kind of screw bolt well sucker rod, comprise an actuator housing, it is characterized in that: form the anti-reverse electro-magnetic braking device of screw bolt well sucker rod by the following units in the described actuator housing, be respectively Single-chip Controlling unit (U1), IGBT driver element (U2) and frequency control unit (U3);
Wherein Single-chip Controlling unit (U1) mainly is made of single-chip microcomputer, and four signal input parts on it receive respectively and come from three signals that photoelectric position sensor H1, H2, H3 transmit on screw bolt well stall button, the screw pump DC motor;
Frequency control unit (U3) is made up of six groups of insulated gate bipolar transistor npn npns, and these six groups of insulated gate bipolar transistor npn npns connect into three-phase full wave rectifier circuit, and its three-phase exit is as drawing the external screw pump DC motor drive end of drive shell;
IGBT driver element (U2) is made up of six groups of TLP250 type IGBT drive circuits, every group driving signal input is connected to the corresponding output end of single-chip microcomputer in the Single-chip Controlling unit, and every group IGBT drive signal output is connected to the conducting trigger control end of corresponding insulated gate bipolar transistor npn npn in the frequency control unit.
2, the anti-reverse electro-magnetic braking device of a kind of screw bolt well sucker rod according to claim 1, it is characterized in that: the single-chip microcomputer in the described Single-chip Controlling unit (U1) is the 89C52 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201185538U CN2919687Y (en) | 2006-06-12 | 2006-06-12 | Electromagnetic brake device for preventing sucker rod of screw pump well from reversing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201185538U CN2919687Y (en) | 2006-06-12 | 2006-06-12 | Electromagnetic brake device for preventing sucker rod of screw pump well from reversing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919687Y true CN2919687Y (en) | 2007-07-04 |
Family
ID=38217507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201185538U Expired - Fee Related CN2919687Y (en) | 2006-06-12 | 2006-06-12 | Electromagnetic brake device for preventing sucker rod of screw pump well from reversing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919687Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400912A (en) * | 2010-09-17 | 2012-04-04 | 深圳市汇川技术股份有限公司 | Shutdown braking system and method for screw pump |
| CN105545732A (en) * | 2014-10-23 | 2016-05-04 | 台达电子工业股份有限公司 | Screw pump operation control method and control system |
| CN110043481A (en) * | 2019-04-09 | 2019-07-23 | 中国石油化工股份有限公司 | A kind of latent oil Rodless oil extraction equipment is anti-reverse to restart protective device |
-
2006
- 2006-06-12 CN CNU2006201185538U patent/CN2919687Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400912A (en) * | 2010-09-17 | 2012-04-04 | 深圳市汇川技术股份有限公司 | Shutdown braking system and method for screw pump |
| CN102400912B (en) * | 2010-09-17 | 2014-12-24 | 深圳市汇川技术股份有限公司 | Shutdown braking system and method for screw pump |
| CN105545732A (en) * | 2014-10-23 | 2016-05-04 | 台达电子工业股份有限公司 | Screw pump operation control method and control system |
| CN110043481A (en) * | 2019-04-09 | 2019-07-23 | 中国石油化工股份有限公司 | A kind of latent oil Rodless oil extraction equipment is anti-reverse to restart protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |