CN211606427U - Motor power conversion energy-saving control device of oil pumping unit - Google Patents
Motor power conversion energy-saving control device of oil pumping unit Download PDFInfo
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- CN211606427U CN211606427U CN202020432448.1U CN202020432448U CN211606427U CN 211606427 U CN211606427 U CN 211606427U CN 202020432448 U CN202020432448 U CN 202020432448U CN 211606427 U CN211606427 U CN 211606427U
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- alternating current
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- loop
- current contactor
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Abstract
The utility model provides a beam-pumping unit motor power conversion energy-saving control device which characterized in that: including box, control panel, internal component and group, the circuit part includes primary loop and secondary circuit, primary loop: the power line is connected with a breaker QF through L1, L2 and L3 of an incoming terminal PE, and the breaker QF is closed; one path is connected with a main alternating current contactor KM through a current transformer, then is connected with a triangular alternating current contactor KMDelta or a star alternating current contactor KMY, and meanwhile, the current transformer detects current and transmits data to a multifunctional power meter W; the other path is connected to the surge protector through a surge protector switch QF 1. The utility model discloses practice thrift the electric energy, reduce extravagant, increase benefit, reduce electrical maintenance cost.
Description
Technical Field
The utility model belongs to the technical field of the oil pumping equipment is supplementary, especially a beam-pumping unit motor power conversion energy-saving control device.
Background
At present, mechanical oil extraction is mostly adopted in oil field production, and an electric motor converts electric energy into mechanical energy to drive an oil pumping unit to run to extract underground crude oil. According to the known content, there are 2 wiring methods for electric motors: the starting torque of the triangular connection method is 2 times that of the star connection method, the running current of the triangular connection method is about 3 times that of the star connection method under the condition that the power of the motor is the same, the triangular connection method meets all starting requirements, convenience and trouble saving are realized, and electricity is consumed in a stable working state; the star connection saves electricity in a steady operation state, but the start torque is small, and a part of oil wells with heavy load may not start, so the triangle connection needs to be replaced. In order to prevent oil well sand blocking and oil pipeline blockage, a triangular connection method is generally adopted when a high-power motor is arranged on site. However, the triangular connection method has the conditions of large production current, small active power and high energy consumption in the production process, and belongs to the serious phenomenon of large horse-drawn trolleys. In long-term production operation, electric elements such as a motor, a circuit breaker, an electric appliance contact, a cable, a transformer and the like are burnt out by overlarge current, the pumping stop time of an oil well, the electric maintenance cost and the labor intensity of workers are increased, the yield of the oil well is reduced, and the potential safety hazard and the cost of production are increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a beam-pumping unit motor power conversion energy-saving control device practices thrift the electric energy, reduces extravagant, increase benefit, reduces electrical maintenance cost.
In order to solve the technical problem, the utility model discloses a following technical scheme: a motor power conversion energy-saving control device of an oil pumping unit comprises a box body, a control panel, an internal component and a wire set, wherein the control panel, the internal component and the wire set are arranged in the box body; the internal components comprise a circuit breaker, a time relay, a current transformer, a control loop fuse, a surge protector switch, a surge protector, a main alternating current contactor, a triangular alternating current contactor and a star alternating current contactor;
the circuit part comprises a primary loop and a secondary loop, wherein the primary loop comprises: the power line is connected with a breaker QF through L1, L2 and L3 of an incoming terminal PE, and the breaker QF is closed; one path is connected with a main alternating current contactor KM through a current transformer, then is connected with a triangular alternating current contactor KMDelta or a star alternating current contactor KMY, and meanwhile, the current transformer detects current and transmits data to a multifunctional power meter W; the other path is connected to the surge protector through a surge protector switch QF 1.
A secondary loop: the circuits X1 and X3 are connected out from the front side of the breaker QF, a safety FU1 and FU2 are arranged in a control loop, one path of current enters from X1 and supplies power to the multifunctional power meter W, and the other path of current supplies power to the automatic and manual mode operation loop, the main alternating current contactor linkage loop, the logic judgment loop and the overcurrent protection loop through the stop button SB 1.
In the automatic and manual mode operation loops, the circuit is connected with the automatic mode loop and the manual mode loop through a change-over switch SA after passing through a time relay KT 1;
an automatic mode loop: the time relay KT2 is connected in sequence, and then the time relay KT2 is divided into two paths, wherein one path is connected with a star-shaped alternating current contactor KMY and a star-shaped operation indicator lamp HR; the other path is connected with a triangular alternating current contactor KM delta and a triangular operation indicator lamp HY;
manual mode loop: the circuit is divided into two paths, one path is connected with a triangular alternating current contactor KM delta and a triangular operation indicator lamp HY in sequence through a triangular starting button SB 2; the other path is connected with a star alternating current contactor KMY and a star running indicator lamp HR in sequence through a star starting button SB 3.
Main ac contactor linkage return circuit: the current enters a star-shaped alternating current contactor KMY and a triangular alternating current contactor KMDelta auxiliary contact from a stop button SB1, the logic judgment is carried out according to the multifunctional power meter W, if a star-shaped connection method is adopted, the star-shaped alternating current contactor KMY is attracted, the current enters a main alternating current contactor KM, and a loop is connected; if a triangular connection method is adopted, the triangular alternating current contactor KM delta is attracted, current enters the main alternating current contactor KM, and a loop is connected.
A logic judgment loop: the current enters the multifunctional power meter W from the stop button SB1, the multifunctional power meter W detects the power of the motor, if the current exceeds a set value, the multifunctional power meter W switches on a circuit, the current enters the time relay KT2, time judgment is carried out through the time relay KT2 to determine whether the current changes continuously or instantaneously, and if the current changes instantaneously, the multifunctional power meter W switches off the circuit and still operates in a star shape; if the motor power is continuously changed, a triangular loop in the time relay KT2 is switched on, the triangular alternating current contactor KMDelta is switched on, the star alternating current contactor KMY is switched off, the triangular operation indicator lamp HY is on, the motor operates in a triangular mode, and the multifunctional power meter W continuously detects the motor power.
An overcurrent protection circuit: the current enters the multifunctional power meter W from the stop button SB1, if the current exceeds the set value, the circuit is switched on, the current enters the time relay KT1 to carry out time judgment through the time relay KT1 so as to determine whether the current changes continuously or instantaneously, if the current changes instantaneously, the multifunctional power meter W switches off the circuit and continues to detect the current; if the change is continuous, the time relay KT1 is closed, the power supply of the secondary loop is stopped, and the equipment is protected from being damaged.
Compared with the prior art, the motor automatically switches between star type or triangle type operation according to the change of the power of the oil pumping unit, thereby ensuring the reliable start and operation of the motor, reducing the impact of the starting current on a power grid, saving electric energy and protecting an electric power system; the star connection method is adopted during starting operation, so that the voltage and the current are reduced, the voltage is reduced from 380V to 220V, and the average current is reduced from 21A to 7A; the power factor is improved, the power factor of the motor is improved to 0.48 from 0.16 on average, the active power and the reactive power of the motor are both reduced, and the phenomenon that a large horse pulls a small car of the motor of the oil pumping unit is changed; when the load of the motor is increased, the connection is switched to the triangular connection method, and the oil pumping unit is started smoothly. The utility model discloses according to power conversion star type-triangle connection, practice thrift the electric energy, reduce the electrical element loss, reduce electrical maintenance cost, reduce electrical failure oil well and stop taking out time, increase oil well output, reduce staff intensity of labour, changed the big horse of beam-pumping unit motor and drawn dolly phenomenon, reduce extravagant, increase the benefit.
Drawings
FIG. 1 is a schematic structural view of the case of the present invention;
fig. 2 is a schematic diagram of a control panel structure of the present invention;
FIG. 3 is a schematic diagram of the internal components of the present invention;
fig. 4 is a circuit diagram of the present invention.
Detailed Description
Example (b): as shown in fig. 1-4, the energy-saving control device for motor power conversion of pumping unit of the present invention comprises a box body 1, a control panel 2, an internal component 3 and a wire set 4, wherein the control panel 2, the internal component 3 and the wire set 4 are arranged in the box body 1, and the control panel 2 is provided with a multifunctional power meter 2-5, a change-over switch 2-4, a triangular start button 2-6, a star start button 2-1, a triangular operation indicator lamp 2-3, a star operation indicator lamp 2-2 and a stop button 2-7; the internal component 3 comprises a circuit breaker 3-4, a time relay 3-3, a current transformer 3-5, a control loop fuse 3-2, a surge protector switch 3-1, a surge protector 3-11, a main alternating current contactor 3-6, a triangular alternating current contactor 3-7 and a star-shaped alternating current contactor 3-8; after the pumping unit is started in a star shape, the motor is continuously detected by the multifunctional power meter 2-5, if the motor reaches a set value, an instruction is sent to the time relay 3-3, time judgment is carried out through the time relay 3-3 to determine whether the motor is continuously changed or instantaneously changed, if the motor is continuously changed, triangular operation is switched, when the power is continuously detected to be lower than the set value, star operation is switched, automatic switching of energy saving and heavy load power of the light load pumping unit is achieved, data recorded by the multifunctional power meter 2-5 in the oil well are uploaded to various parameters of the oil well in time through an interface, and a remote start and stop motor instruction is received through an RTU information remote transmission box.
When the device is used, the box body is firmly fixed, the power lines 3-9 are connected well, the motor lines 3-10 are connected with the motor, the change-over switch 2-4 is rotated to an automatic position, the circuit breaker 3-4 is switched on for power supply, the surge protector switch 3-1 is switched on, the control panel 2 and the door of the box body 1 are closed, the pumping unit is started, the main alternating current contactor 3-6 and the star alternating current contactor 3-8 are sucked and closed, star operation is adopted, and the star operation indicator lamp 2-2 on the control panel 2 is lightened; when the load of the motor is increased, the multifunctional power meter 2-5 on the control panel 2 detects that the power reaches a set value, sends an instruction to the time relay 3-3, and judges the time through the time relay 3-3 to determine whether the power is continuously changed or instantaneously changed, if the power is instantaneously changed, the motor still runs in a star shape, if the power is continuously changed, the triangular alternating current contactor 3-7 is closed, the triangular operation indicator lamp 2-3 is on, and the star-shaped alternating current contactor 3-8 is disconnected, so that automatic switching is realized; when the multifunctional power meter 2-5 detects that the power is lower than a set value, an instruction is sent to the time relay 3-3, time judgment is carried out through the time relay 3-3 to determine whether the power is continuously changed or instantaneously changed, if the power is instantaneously changed, the power still operates in a triangular mode, and if the power is continuously changed, star-shaped operation is switched again; when manual operation is needed, the change-over switch 2-4 is rotated to a manual position, star-shaped operation or triangular operation is determined according to the oil well load condition, a star-shaped start button 2-1 on the control panel 2 is pressed when the star-shaped start and operation are needed, the star-shaped alternating current contactor 3-8 is attracted, and the star-shaped operation indicator lamp 2-2 is on; when the triangular operation is required, the triangular starting button 2-6 is pressed, the triangular AC contactor 3-7 is closed, and the triangular operation indicator lamp 2-3 is on; when emergency shutdown is needed, a stop button 2-7 is pressed to stop the motor; when the system voltage is suddenly increased, the surge protector 3-11 shunts the overlarge current through the grounding wire 3-12, so that the safety of other equipment is protected;
the circuit diagram of fig. 4 works:
a primary loop:
the power line is accessed by L1, L2 and L3 of an inlet terminal PE (TC-604), enters a breaker QF (NM 1-125/3300250A), closes the breaker QF, and enters a main alternating current contactor KM (CJ 20-63380V) and a triangular alternating current contactor KM delta (CJ 20-63380V) or a star alternating current contactor KMY (CJ 20-40380V) through a current transformer (LMZJ 1-0.550/5) in one way, so that the motor M operates by adopting different wiring methods according to the motor power, and meanwhile, the current transformer (LMZJ 1-0.550/5) detects the current and transmits data to a multifunctional power meter W (HNYT-2 CY); the other path enters a surge protector (NU 6-II/40 KVA/4P) through a surge protector switch QF1 (DZ 47-63/4P 40A);
(II) secondary circuit:
the circuits X1 and X3 are connected from the front of a breaker QF (NM 1-125/3300250A), a safety FU1 and FU2 are arranged in a control loop, one path of current enters from X1 to supply power to the multifunctional power meter W, and the other path of current supplies power to the following circuits through a stop button SB 1:
1. the first path is as follows: automatic and manual mode operation loop
Automatic mode:
the current enters a change-over switch SA after passing through a time relay KT1, an automatic mode is adopted, a line 05 is conducted with a line 07, the current is communicated with an automatic loop, the current enters a time relay KT2, the line 07-17 is conducted, a star-shaped loop in the time relay KT2 is conducted, the current enters a star-shaped alternating current contactor KMY, the star-shaped alternating current contactor KMY is attracted, a star-shaped operation indicator lamp HR is on, and a motor operates in a star shape; the load is detected by a multifunctional power meter W, if the load exceeds a set value, a 07-11 line is conducted, a triangular connection method is operated, a triangular loop in a time relay KT2 is connected, current enters a triangular alternating current contactor KM delta, the triangular alternating current contactor KM delta is attracted, a triangular operation indicator lamp HY is on, a star alternating current contactor KMY is disconnected, and a motor operates in a triangular mode;
manual mode:
the current gets into change over switch SA behind time relay KT1, adopts manual mode, and 05 lines and 09 lines switch on, then the manual circuit of UNICOM, according to the on-the-spot condition confirm adopt the triangle to connect or star connects the method:
(1) triangular connection method
The pressed triangular starting button SB2 is attracted by a triangular alternating current contactor KM delta, a triangular operation indicator lamp HY is on, and the motor operates in a triangular mode;
(2) star connection
A pressed star starting button SB3 is attracted by a star alternating current contactor KMY, a star operation indicator lamp HR is on, and a motor operates in a star mode;
2. and a second path: main alternating current contactor linkage loop
The current enters a star-shaped alternating current contactor KMY and a triangular alternating current contactor KMDelta auxiliary contact from a stop button SB1, the logic judgment is carried out according to the multifunctional power meter W, if a star-shaped connection method is adopted, the star-shaped alternating current contactor KMY is attracted, the current enters a main alternating current contactor KM, and a loop is connected; if a triangular connection method is adopted, a triangular alternating current contactor KM delta is attracted, current enters a main alternating current contactor KM, and a loop is connected;
3. and a third path: logic judgment loop
The current enters the multifunctional power meter W from the stop button SB1, the multifunctional power meter W detects the power of the motor, and if the power exceeds the set value, the multifunctional power meter W switches on the circuit (
And
closing), the current enters a time relay KT2 (coil), time judgment is carried out through the time relay KT2 to determine whether the current changes continuously or instantaneously, and if the current changes instantaneously, the multifunctional power meter W is disconnected with a circuit (a)
And
if the power is continuously changed, a triangular loop in the time relay KT2 is switched on, a triangular alternating current contactor KM △ is attracted, a star alternating current contactor KMY is switched off, a triangular operation indicator lamp HY is on, the motor operates in a triangular mode, and the multifunctional power meter W continues to detect the power of the motor;
4. and a fourth path: overcurrent protection circuit
The current enters the multifunctional power meter W from the stop button SB1, and the circuit is switched on if the current exceeds the set value (
And
closing), the current enters a time relay KT1 (coil) to carry out time judgment through the time relay KT1 so as to determine whether the current changes continuously or instantaneously, and if the current changes instantaneously, the multifunctional power meter W is disconnected with a circuit (a)
And
off), continue to detect current; if the change is continuous, the time relay KT1 is closed, the 03 line and the 05 line are disconnected, the secondary loop is stopped to supply power, and the equipment is protected from being damaged.
The utility model discloses an automatic switching operation between star type or triangle according to the change motor of beam-pumping unit load guarantees the reliable start-up and operation of motor, reduces starting current and to the impact of electric wire netting, practices thrift electric energy, protection electric power system, has changed the big horse of beam-pumping unit motor and has drawn dolly phenomenon, reduces extravagant, incremental benefits.
Claims (5)
1. The utility model provides a beam-pumping unit motor power conversion energy-saving control device which characterized in that: the multifunctional power meter comprises a box body, wherein a control panel, an internal component and a wire set are arranged in the box body, and a multifunctional power meter, a change-over switch, a triangular starting button, a star-shaped starting button, a triangular operation indicator lamp, a star-shaped operation indicator lamp and a stop button are arranged on the control panel; the internal components comprise a circuit breaker, a time relay, a current transformer, a control loop fuse, a surge protector switch, a surge protector, a main alternating current contactor, a triangular alternating current contactor and a star alternating current contactor;
the circuit part comprises a primary loop and a secondary loop, wherein the primary loop comprises: the power line is connected with a breaker QF through L1, L2 and L3 of an incoming terminal PE, and the breaker QF is closed; one path is connected with a main alternating current contactor KM through a current transformer, then is connected with a triangular alternating current contactor KMDelta or a star alternating current contactor KMY, and meanwhile, the current transformer detects current and transmits data to a multifunctional power meter W; the other path is connected into a surge protector through a surge protector switch QF 1;
a secondary loop: the circuits X1 and X3 are connected out from the front side of the breaker QF, a safety FU1 and FU2 are arranged in a control loop, one path of current enters from X1 and supplies power to the multifunctional power meter W, and the other path of current supplies power to the automatic and manual mode operation loop, the main alternating current contactor linkage loop, the logic judgment loop and the overcurrent protection loop through the stop button SB 1.
2. The power conversion and energy-saving control device for the motor of the oil pumping unit according to claim 1, characterized in that: in the automatic and manual mode operation loops, the circuit is connected with the automatic mode loop and the manual mode loop through a change-over switch SA after passing through a time relay KT 1;
an automatic mode loop: the time relay KT2 is connected in sequence, and then the time relay KT2 is divided into two paths, wherein one path is connected with a star-shaped alternating current contactor KMY and a star-shaped operation indicator lamp HR; the other path is connected with a triangular alternating current contactor KM delta and a triangular operation indicator lamp HY;
manual mode loop: the circuit is divided into two paths, one path is connected with a triangular alternating current contactor KM delta and a triangular operation indicator lamp HY in sequence through a triangular starting button SB 2; the other path is connected with a star alternating current contactor KMY and a star running indicator lamp HR in sequence through a star starting button SB 3.
3. The power conversion and energy-saving control device for the motor of the oil pumping unit according to claim 1, characterized in that: main ac contactor linkage return circuit: the current enters a star-shaped alternating current contactor KMY and a triangular alternating current contactor KMDelta auxiliary contact from a stop button SB1, the logic judgment is carried out according to the multifunctional power meter W, if a star-shaped connection method is adopted, the star-shaped alternating current contactor KMY is attracted, the current enters a main alternating current contactor KM, and a loop is connected; if a triangular connection method is adopted, the triangular alternating current contactor KM delta is attracted, current enters the main alternating current contactor KM, and a loop is connected.
4. The power conversion and energy-saving control device for the motor of the oil pumping unit according to claim 1, characterized in that: a logic judgment loop: the current enters the multifunctional power meter W from the stop button SB1, the multifunctional power meter W detects the power of the motor, if the current exceeds a set value, the multifunctional power meter W switches on a circuit, the current enters the time relay KT2, time judgment is carried out through the time relay KT2 to determine whether the current changes continuously or instantaneously, and if the current changes instantaneously, the multifunctional power meter W switches off the circuit and still operates in a star shape; if the motor power is continuously changed, a triangular loop in the time relay KT2 is switched on, the triangular alternating current contactor KMDelta is switched on, the star alternating current contactor KMY is switched off, the triangular operation indicator lamp HY is on, the motor operates in a triangular mode, and the multifunctional power meter W continuously detects the motor power.
5. The power conversion and energy-saving control device for the motor of the oil pumping unit according to claim 1, characterized in that: an overcurrent protection circuit: the current enters the multifunctional power meter W from the stop button SB1, if the current exceeds the set value, the circuit is switched on, the current enters the time relay KT1 to carry out time judgment through the time relay KT1 so as to determine whether the current changes continuously or instantaneously, if the current changes instantaneously, the multifunctional power meter W switches off the circuit and continues to detect the current; if the change is continuous, the time relay KT1 is closed, the power supply of the secondary loop is stopped, and the equipment is protected from being damaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020432448.1U CN211606427U (en) | 2020-03-30 | 2020-03-30 | Motor power conversion energy-saving control device of oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020432448.1U CN211606427U (en) | 2020-03-30 | 2020-03-30 | Motor power conversion energy-saving control device of oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211606427U true CN211606427U (en) | 2020-09-29 |
Family
ID=72582957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020432448.1U Expired - Fee Related CN211606427U (en) | 2020-03-30 | 2020-03-30 | Motor power conversion energy-saving control device of oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211606427U (en) |
-
2020
- 2020-03-30 CN CN202020432448.1U patent/CN211606427U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200929 Termination date: 20210330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |