CN2138191Y - Electric controller for phase-choosing protecting and speed reducing stopping of screw pump - Google Patents
Electric controller for phase-choosing protecting and speed reducing stopping of screw pump Download PDFInfo
- Publication number
- CN2138191Y CN2138191Y CN 92219774 CN92219774U CN2138191Y CN 2138191 Y CN2138191 Y CN 2138191Y CN 92219774 CN92219774 CN 92219774 CN 92219774 U CN92219774 U CN 92219774U CN 2138191 Y CN2138191 Y CN 2138191Y
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- China
- Prior art keywords
- low
- protection
- electric motor
- phase
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to an electric controller for screw pumps used in exploring oil, which has the functions of phase sequence detection and protection to ensure that an electric motor does not reverse when the phase sequence of electricity is garbled. Additionally, the utility model can be directly converted among low/high speed start and low/high speed running and can achieve speed reducing stopping the electric motor through time delay and depressurization when the electric motor is stopped so as to slowly decelerate a rotating rod string until the electric motor is stopped and prevent a sucker rod from reversing and tripping. Since a comprehensive protector for integrated circuit motors is adopted, the utility model has favorable overload inverse time-lag protection, good phase failure unevenness protection, good instantaneous short circuit protection, reliable action, convenient adjustment, small size and low cost.
Description
The utility model relates to a kind of oil exploitation control panel, particularly a kind of ground driving screw pump control panel.
There are five families in the on-the-spot domestic manufactory of ground driving screw pump that uses in oil field at present, and three families are abroad arranged, and its control panel belongs to conventional start and stop control basically.Because of screw pump by the transferring power of getting up of the screwed connection of sucker rod one by one, so prevent that the sucker rod counter-rotating from threading off is a problem anxious to be solved, colleague's development has both at home and abroad at present also been used anti-sucker rod counter-rotating instrument of multiple mechanical type and measure, some effects have been received, but also come with some shortcomings, the purpose of this utility model is the part that compensates its defect, and makes screw pump oil production technology more perfect.
The utility model at first solves is that problem is protected in the choosing of screw pump mutually; when the power supply phase sequence of electrical network or interim generator changes, this control panel generation self-locking, and bright lamp is reported to the police; the operator mixes up the phase sequence unit and can turn round, and has avoided the counter-rotating of transmission sucker rod to thread off.This use is novel has also adopted time-delay step-down deceleration to shut down; when shutting down; this control panel delay cut-off continues to supply with the motor low-voltage; electric moter voltage descends in time-delay; output torque also descends significantly; the transmission roofbolt discharges the elastic potential energy of storage in deceleration, the roofbolt counter-rotating that the elastic energy abrupt release causes when having prevented to shut down is suddenly threaded off.This use is novel has also adopted the integrated-circuit micromotor comprehensive protection device, so have good over-load inverse time-lag protection, phase failure unbalance protection, transcient short circuit time protection.This use is novel, can be used for single speed, double speed, three speed or stepless speed-regulating motor drive screw pump the control of anti-tripping integrated protection it can realize the low rate start low cruise, high-speed starting high-speed cruising, directly conversion between high low speed.
The utility model is achieved in that with the double-speed motor driving be example, and the three-phase electrical source of power enters automatic air-break switch QF, and QF goes out triple line and enters current transformer TA, and the effect of TA is to detect electric current to change.QF goes out triple line in addition and enters phase sequence detection protector FX, electric control box self-locking when the effect of FX is the power supply negative phase sequence.QF goes out triple line again and enters integrated-circuit micromotor comprehensive protection device QM, and the effect of QM is to provide integrated protection for motor.Phase sequence detects protector FX, current transformer TA, and the outlet of comprehensive protector of motor QM enters control circuit respectively.Control circuit is by a plurality of A.C. contactors, the time relay, safety fuse, indicator lamp, push switch and an auto-transformer formation, its effect is to constitute the loop by instruction, when instructing as low speed, control circuit makes motor satisfy triangle and connects; When instructing at a high speed, control circuit makes motor satisfy double star and connects; During halt instruction, control circuit makes motor obtain the low-voltage of certain time-delay.Make ground drive screw pump avoid the roofbolt dropout by above-mentioned functions, avoided the generation of burn-down of electric motor accident, will lead-screw pump oil production technology further develop.
Below will contrast accompanying drawing, and be described in further detail structure of the present utility model and use with embodiment, drawing of the present utility model is described as follows:
Fig. 1 is a master control circuit structure principle chart of the present utility model.
Fig. 2 is an auxilliary control line construction schematic diagram of the present utility model.
Fig. 3 is phase sequence relay in the utility model, comprehensive protector of motor structural principle and wiring diagram.
Number in the figure is
The QF-automatic air-break switch, TA-current transformer, TC-auto-transformer, KM1 KM
2KM
6-A.C. contactor, the M-alternating current generator.
U
1V
1W
1-motor delta connection (low cruise), U
2, V
2, W
2-motor Y-Y connection (high-speed cruising), FU
1, FU
2-safety fuse.
KT
1, KT
2-the time relay, the FX-phase sequence detects protector, QM-integrated-circuit micromotor comprehensive protection device, R-resistance, C-electric capacity, J-relay, KA-auxiliary reclay, SB
1-low speed press button.SB
2-high speed push switch, SB
3-shutdown push switch,
HL
1-red (phase sequence) indicator lamp, HL
2-green (low cruise) indicator lamp,
HL
3-green (high-speed cruising) indicator lamp, HL
4-yellow (power connection) indicator lamp;
The outlet wiring point of KQ-QM, A-ammeter, the outlet wiring point of KX-FX, SA-master switch.
A most preferred embodiment of the present utility model is: ground driving screw pump adopts double-speed motor to drive.Shown in Figure 1 by master control circuit, incoming call 380V three-phase electrical source of power L1, L2, L3 enter automatic air-break switch QF, and L4 is that zero line inserts cabinet N.Three groups of QF outlet L11, L12, L13 outlets, one group enters current transformer TA, and the effect of TA is to detect current changing signal; One group enters phase sequence shown in Figure 3 and detects protector FX, and the effect of FX is a phase shift function of utilizing capacitor C, resistance R, and the electric current of guaranteeing to supply with motor is a positive phase sequence; Another group enters integrated-circuit micromotor comprehensive protection device QM, and the effect of QM is when motor overload, underload, short circuit, rapid action power dump during phase shortage.The outlet of FX, QM enters KX shown in Figure 2, KQ wiring point respectively, has constituted the automatically controlled circuit of double-speed motor drive screw pump.
During the low rate start operation: press low speed button SB1, contactor KM1 and KM3 adhesive simultaneously, electric current is the motor M power supply by U1, V1, the wiring of W1 triangularity, motor M is the low cruise state.During the high-speed starting operation: press high-speed cruising knob SB2, KM3 disconnects, KM1, KM2, KM4, and adhesive simultaneously, electric current becomes the double star inlet wire by prap U2, V2, W2, and motor M is the high-speed cruising state.
When shutting down in the low cruise: press stop botton SB3, KM1 disconnects, KM3, KM5, KM6 adhesive, and time relay KT1 work, three-phase electricity is supplied with the low-voltage of motor 50-80% by auto-transformer TC, and power supply just finishes after finishing in limited time to KT1.Voltage descends, and causes that the motor output torque becomes quadratic relationship to descend, and the polished rod rotating speed slows down, and the stored elastic potential energy of roofbolt obtains discharging in falling moment moderating process, and the roofbolt counter-rotating is threaded off when having prevented shutdown.
When shutting down in the high-speed cruising: press stop botton SB3, KM1 disconnects, KM2, KM4, KM6 adhesive, and time relay KT2 work, three-phase electricity is supplied with the low tension of motor 50-80% by auto-transformer TC, and power supply just finishes after finishing in limited time to KT2.Reach the effect same that low cruise is shut down.
Since the high low speed self-organizing system of this control panel, can realize high-speed starting, high-speed cruising, the low rate start low cruise can directly be changed between high low speed.Can insert single speed, double speed, stepless speed-regulating motor also can be set up a route and be used for three-speed motor control.
Claims (1)
- Control panel is shut down in a kind of screw pump choosing protection deceleration mutually; be by automatic air-break switch QF is housed in the bin; integrated protector for electric motor QM; current transformer TA, A.C. contactor KM, auto-transformer TC; time relay KT; auxiliary reclay KA and button, indicator lamps etc. constitute, and it is characterized in that:A, three phase mains are connected in series capacitor C respectively, and resistance R 1, R2 and relay J constitute phase sequence and detect protection.Three phase mains is supplied with the low-voltage of motor 50-80% by auto-transformer TC when B, shutdown, and it supplies with the length of low-voltage time, and KT limits by the time relay, and the motor output torque is descended significantly, the shutdown of slowing down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92219774 CN2138191Y (en) | 1992-09-12 | 1992-09-12 | Electric controller for phase-choosing protecting and speed reducing stopping of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92219774 CN2138191Y (en) | 1992-09-12 | 1992-09-12 | Electric controller for phase-choosing protecting and speed reducing stopping of screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2138191Y true CN2138191Y (en) | 1993-07-14 |
Family
ID=33766951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92219774 Expired - Fee Related CN2138191Y (en) | 1992-09-12 | 1992-09-12 | Electric controller for phase-choosing protecting and speed reducing stopping of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2138191Y (en) |
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 |
| CN106194720A (en) * | 2016-09-08 | 2016-12-07 | 泉州惠安博派信息技术有限公司 | A kind of double-function electric submersible screw pump being provided with reverse-rotation preventing function |
| CN111697537A (en) * | 2020-05-29 | 2020-09-22 | 中科合成油工程有限公司 | Multi-speed motor control protection circuit and multi-speed motor control protection method |
| CN115450941A (en) * | 2022-08-02 | 2022-12-09 | 青岛海信日立空调系统有限公司 | Control circuit and control method of double-speed fan |
-
1992
- 1992-09-12 CN CN 92219774 patent/CN2138191Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN106194720A (en) * | 2016-09-08 | 2016-12-07 | 泉州惠安博派信息技术有限公司 | A kind of double-function electric submersible screw pump being provided with reverse-rotation preventing function |
| CN111697537A (en) * | 2020-05-29 | 2020-09-22 | 中科合成油工程有限公司 | Multi-speed motor control protection circuit and multi-speed motor control protection method |
| CN115450941A (en) * | 2022-08-02 | 2022-12-09 | 青岛海信日立空调系统有限公司 | Control circuit and control method of double-speed fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |