CN218733976U - Frequency conversion controller system for oil field - Google Patents
Frequency conversion controller system for oil field Download PDFInfo
- Publication number
- CN218733976U CN218733976U CN202222826034.9U CN202222826034U CN218733976U CN 218733976 U CN218733976 U CN 218733976U CN 202222826034 U CN202222826034 U CN 202222826034U CN 218733976 U CN218733976 U CN 218733976U
- Authority
- CN
- China
- Prior art keywords
- relay
- frequency converter
- frequency
- control module
- port
- 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.)
- Active
Links
Images
Abstract
The utility model belongs to the field of oil field energy-saving equipment, in particular to a frequency conversion controller system for oil field matched with an oil field pumping unit, which comprises a frequency converter arranged in an operation loop and a frequency conversion control loop arranged in a cabinet body, wherein the operation loop comprises a circuit breaker connected with an industrial power grid, the other end of the circuit breaker is connected with the input end of the frequency converter, and the output end of the frequency converter is connected with a motor of the pumping unit; the variable frequency control circuit comprises a circuit breaker connected with an industrial power grid, the other end of the circuit breaker is connected with another circuit breaker after the voltage transformation of a transformer, the other end of the circuit breaker enters the cabinet body and provides a power supply for the variable frequency control circuit in the cabinet body, the variable frequency control circuit comprises a frequency converter regulation and control module, the frequency converter regulation and control module is connected with a variable frequency control circuit and a port for carrying out data communication with a 485 communication protocol and an RTU box, and the installation and debugging on site are facilitated.
Description
Technical Field
The utility model belongs to oil field energy-saving equipment field especially relates to the frequency conversion controller system for oil field that uses with the cooperation of oil field beam-pumping unit.
Background
In oil exploitation, the expenditure of electricity accounts for about one third of the production cost of oil per ton, and the oil pumping unit is used as the most basic equipment of an oil field, so that the energy conservation and consumption reduction of the oil pumping unit are more important. The beam-pumping unit has three working states of heavy load, light load and power generation for each stroke. The pumping unit belongs to potential energy load, especially when the balance weight is unbalanced, the rotating speed of the motor dragged by the load is higher than that corresponding to the output frequency of the frequency converter at a certain stage of the whole stroke frequency due to potential energy or inertia, the motor is in a regeneration state, and the generated regenerated electric energy is transmitted to the filter capacitor at the direct current side to form pumping voltage. Therefore, the energy-saving and efficiency-increasing improvement schemes of the pumping unit in the market generally comprise the following schemes:
1. the intermittent operation mode is to control the oil pumping unit by starting and stopping at fixed time, so that the oil extraction efficiency can be improved on a certain basis. But this method is at the cost of lost production, and most importantly, the method is automatically started to run, has unsafe factors and is generally not allowed to be used in the oil field.
2. The mechanical gear box is modified to control the rotation speed of the motor and change the stroke frequency of the oil pumping unit, so as to achieve the purposes of energy saving and efficiency improvement. The mode plays a certain role, but mainly has great modification change on the mechanical part of the pumping unit and limited energy-saving potential.
3. The scheme adopts a multi-power high-slip low-speed motor, reduces the rotating speed of the motor and the power of the motor by increasing the number of poles of the motor, improves the filling coefficient of an oil well pump, increases the liquid pumping capacity and reduces the energy consumption of unit liquid production. Is especially suitable for low-yield oil wells in oil fields. The mode can not regulate the speed and change the stroke frequency of the oil pumping unit, and has a certain application range.
4. The frequency conversion speed regulation mode adopts the frequency conversion speed regulation principle, has wide application range and obvious energy-saving effect. According to the speed regulation principle of the motor, the rotating speed of the motor can be changed smoothly and steplessly by changing the frequency. For constant torque loads such as pumping units, the input power of the frequency converter decreases as the rotational speed is reduced. Therefore, stepless speed regulation of the pumping unit can be realized, and the aims of energy conservation and efficiency improvement are achieved.
As shown in fig. 6, in the existing variable frequency speed control cabinet, not only a frequency converter and a variable frequency control module for speed control but also an RTU module for data acquisition is provided, and the RTU module includes a relevant chip, an acquisition sensor, a power supply, etc., however, many devices on the oil well site have the RTU module, such as an RTU box, and the variable frequency control cabinet is provided with relevant devices, which increases the cost of the devices.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a frequency conversion controller system for an oil field, which is matched with an oil pumping unit of the oil field.
The utility model discloses a realize like this: a frequency conversion controller system for oil field comprises a frequency converter installed in an operation loop and a frequency conversion control loop installed in a cabinet body,
the operation loop comprises a circuit breaker connected with an industrial power grid, the other end of the circuit breaker is connected with the input end of a frequency converter, and the output end of the frequency converter is connected with a motor of the oil pumping unit;
the variable frequency control circuit includes the circuit breaker that is connected with industrial power consumption electric wire netting, and the other end of circuit breaker is connected with another circuit breaker after transformer transformation, and the other end of circuit breaker enters into the cabinet internal, provides power, its characterized in that for the internal variable frequency control circuit of cabinet: the frequency conversion control loop comprises a frequency converter regulation and control module, the frequency converter regulation and control module is connected with a frequency conversion control circuit and a port for carrying out data communication with the RTU box by using a 485 communication protocol.
The frequency conversion control circuit comprises (1) a stop instruction: the two parallel lines are respectively provided with an indicator light HG1 and an indicator light HR1, the two lines are also respectively provided with contacts of a relay KA, and the contacts on the two lines are in an interlocking relationship;
(2) Frequency conversion indication: the relay KA arranged between the line and the RC port of the frequency converter regulation and control module is matched with the two contacts of the relay KA on the stop indication (1) so as to indicate the running state of the frequency converter regulation and control module;
(3) Frequency conversion fault relay: the relay KA0 is arranged between the line and the TC port of the frequency converter regulating module, and the two ends of the relay KA0 are connected with the indicating lamps HY1 in parallel;
(4) And (3) frequency conversion operation control: one end of the first contact of the relay KA3 is connected with the port of the frequency converter regulation and control module S1, and the other end of the first contact of the relay KA3 is connected with the COM port of the frequency converter regulation and control module;
the relay system also comprises a relay KA3 connected with a line, the other end of the relay KA3 is connected with one end of a normally closed electric shock of the relay KA0, the other end of the normally closed electric shock of the relay KA0 is connected with one end of a normally open button SB2, the other end of the normally closed electric shock of the relay KA0 is also connected with one end of a second contact of the relay KA3, the opening and closing state of the second contact of the relay KA3 is the same as the opening and closing state of the first contact of the relay KA3, the other end of the normally open button SB2 and the other end of the second contact of the relay KA3 are both connected with a first contact of a transfer switch SA1 arranged in the system, the second contact of the transfer switch SA1 is connected with one end of the normally closed button SB1, a third contact of the transfer switch SA1 is also connected with one end of the normally closed button SB1, and the other end of the normally closed button SB1 is connected with the line;
(5) Frequency conversion local/remote control: one end of the relay KA4 contact is connected with the port of the frequency converter regulation and control module S2, one end of the relay KA4 contact is also connected with the port of the frequency converter regulation and control module S4, and the other end of the relay KA4 contact is connected with the COM port of the frequency converter regulation and control module;
one end of a relay KM4 is connected with a circuit, and the other end of the relay KM4 is connected with a fourth contact of the change-over switch SA 1;
(6) Frequency conversion fault resetting: one end of a normally open button SB0 is connected with the S3 port of the frequency converter regulation and control module, and the other end of the normally open button SB0 is connected with the COM port of the frequency converter regulation and control module;
and the RA port and the TA port of the frequency converter regulation and control module are communicated with the circuit.
Further optimize, the cabinet body still includes temperature controller, and temperature controller connects the power, still is connected with temperature sensor and fan on the temperature controller.
Further optimize, still be provided with binding post row on the cabinet body, binding post row is connected in the external port on the converter regulation and control module respectively to with external communication.
Further optimize, still be provided with current transformer on the return circuit between circuit breaker and the converter on the operation return circuit, current transformer's the other end is connected with the input of strapping table, and the data of strapping table still are carried and are carried out data communication for the RTU case.
The device has the following advantages:
the frequency conversion is adopted by the device to control the operation of the motor of the oil extraction machine, the frequency conversion and the power frequency conversion are not carried out, the whole control circuit is simplified, the manufacturing cost is reduced, and the control stability is improved. Secondly, the frequency converter regulation and control module of the device is directly provided with a port for data communication with an RTU box by using a 485 communication protocol, so that the whole control circuit is simplified, the manufacturing cost is reduced, and the device is convenient to install and debug on site.
Drawings
Fig. 1 is a schematic structural diagram of the system in which a frequency converter is installed in an operation loop.
Fig. 2 is a schematic structural diagram of a variable frequency control loop installed in a cabinet in the system.
Fig. 3 is a schematic diagram of a wiring structure of a wiring terminal block mounted on a cabinet in the system.
Fig. 4 is a schematic diagram of the connection structure of the counting meter in the system.
Fig. 5 is a schematic structural diagram of a cabinet body of the frequency conversion cabinet.
Fig. 6 is a circuit diagram of a frequency converter regulation and control module of a conventional frequency converter controller system in the background art.
Detailed Description
Examples
As shown in figure 1, the frequency conversion controller system for the oil field is arranged on an oil well site and is matched with an oil extractor for use, and the frequency conversion controller system comprises a frequency converter 1 arranged in an operation loop and a frequency conversion control loop arranged in a cabinet body 2.
The operation loop comprises a circuit breaker 1QF connected with an industrial power grid, the other end of the circuit breaker 1QF is connected with the input end of a frequency converter 1, the output end of the frequency converter 1 is connected with a motor of the pumping unit, and after current enters the frequency converter 1, the frequency is modulated, and finally the rotating speed of the motor of the pumping unit is controlled. According to the speed regulation principle of the motor, the rotating speed of the motor can be changed smoothly and steplessly by changing the frequency. For constant torque loads such as pumping units, the input power of the frequency converter decreases as the rotational speed is reduced. Therefore, stepless speed regulation of the pumping unit can be realized, and the aims of energy conservation and efficiency improvement are achieved.
The variable frequency control circuit includes the circuit breaker 2QF that is connected with industrial power grid, the other end of circuit breaker 2QF is connected with another circuit breaker QF0 after the transformer BK300VA vary voltage, the other end of circuit breaker QF0 enters into the cabinet internal, provide the power for the internal variable frequency control circuit of cabinet, the power that can provide in this embodiment includes the power in following cabinet cooling fan return circuit, the power of secondary control in the cabinet, variable frequency control circuit's power promptly, stand-by power, and communication box power, be parallel relation between these powers.
As shown in fig. 2, the frequency conversion control loop includes a frequency converter regulation module 3, and in this embodiment, the type of the frequency converter regulation module 3 is a regulation part of an EV 380-0150G-T4 frequency converter. And the frequency converter regulation and control module 3 is connected with a frequency conversion control circuit, and a port 485+ and a port 485 which are in data communication with the RTU box by using a 485 communication protocol.
The frequency conversion control circuit comprises (1) a stop instruction: the two parallel lines are respectively provided with an indicator light HG1 and an indicator light HR1, the two lines are also respectively provided with contacts of a relay KA, and the contacts on the two lines are in an interlocking relationship; when the indicating lamp is used, one of the indicating lamps is marked as running indication, the other indicating lamp is marked as stop indication, and because the circuit where the two lamps are located is provided with the contacts in an interlocking relationship, only one of the two indicating lamps can be lightened, and the indicating lamp can accurately play an indicating role.
(2) Frequency conversion indication: the relay KA arranged between the line and the RC port of the frequency converter regulation and control module 3 is matched with two 'contacts of the relay KA' on the 'stop indication' to indicate the running state of the frequency converter regulation and control module 1;
(3) Frequency conversion fault relay: the relay KA0 is arranged between the line and the TC port of the frequency converter regulation and control module, and the two ends of the relay KA0 are connected with the indicator light HY1 in parallel;
(4) And (3) frequency conversion operation control: one end of the first contact of the relay KA3 is connected with the S1 port of the frequency converter regulation and control module 2, and the other end of the first contact of the relay KA3 is connected with the COM port of the frequency converter regulation and control module;
the relay is characterized by further comprising a relay KA3 connected with a line, the other end of the relay KA3 is connected with one end of a normally closed electric shock of the relay KA0, the other end of the normally closed electric shock of the relay KA0 is connected with one end of a normally open button SB2, the other end of the normally closed electric shock of the relay KA0 is also connected with one end of a second contact of the relay KA3, the opening and closing state of the second contact of the relay KA3 is the same as the opening and closing state of the first contact of the relay KA3, the other end of the normally open button SB2 and the other end of the second contact of the relay KA3 are both connected with a first contact of a transfer switch SA1 arranged in the system, the second contact of the transfer switch SA1 is connected with one end of the normally closed button SB1, a third contact of the transfer switch SA1 is also connected with one end of the normally closed button SB1, and the other end of the normally closed button SB1 is connected with the line; and the frequency conversion control loop works or stops through the matching of each button and each relay.
(6) Frequency conversion local/remote control: one end of the relay KA4 contact is connected with the port of the frequency converter regulation and control module S2, one end of the relay KA4 contact is also connected with the port of the frequency converter regulation and control module S4, and the other end of the relay KA4 contact is connected with the COM port of the frequency converter regulation and control module;
one end of a relay KM4 is connected with a circuit, and the other end of the relay KM4 is connected with a fourth contact of the change-over switch SA 1; by rotating the contact connection relation of the change-over switch SA1, the variable frequency control loop has the options of local control and remote control function selection.
(6) Frequency conversion fault resetting: one end of a normally open button SB0 is connected with the S3 port of the frequency converter regulation and control module, and the other end of the normally open button SB0 is connected with the COM port of the frequency converter regulation and control module;
and the RA port and the TA port of the frequency converter regulation and control module are communicated with the circuit.
Further optimize, the cabinet is internal still to include temperature controller 4, temperature controller 4's model is WK-JD, and temperature controller 4 connects the power, still is connected with temperature sensor 5 and fan 6 on the temperature controller. The loop works automatically, and as long as the variable frequency control loop is electrified, the loop can work automatically to control the temperature in the cabinet body 2 within a proper range.
Further optimize, as shown in fig. 3, still be provided with binding post row 7 on the cabinet body, binding post row 7 is connected in the external port on the converter regulation and control module respectively to communicate interconnected with the external world.
Further optimize, still be provided with current transformer on the return circuit between circuit breaker 1QF and the converter 1 on the operation return circuit, current transformer's the other end is connected with the input of strapping table, and the data of strapping table still are carried for RTU case and are carried out data communication. Therefore, the field current is recorded, and the current can be transmitted to a background as a data volume through an RTU module in an RTU box and used as a reference value.
As shown in fig. 5, it is a cabinet of the device.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and to those skilled in the art, the present invention can be variously modified and changed, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A frequency conversion controller system for oil field comprises a frequency converter installed in an operation loop and a frequency conversion control loop installed in a cabinet body,
the operation loop comprises a circuit breaker connected with an industrial power grid, the other end of the circuit breaker is connected with the input end of a frequency converter, and the output end of the frequency converter is connected with a motor of the oil pumping unit;
the frequency conversion control circuit comprises a circuit breaker connected with an industrial power grid, the other end of the circuit breaker is connected with another circuit breaker after voltage transformation of a transformer, the other end of the circuit breaker enters the cabinet body to provide power for the frequency conversion control circuit in the cabinet body,
the method is characterized in that: the frequency conversion control loop comprises a frequency converter regulation and control module, the frequency converter regulation and control module is connected with a frequency conversion control circuit and a port for carrying out data communication with the RTU box by using a 485 communication protocol.
2. The variable frequency controller system for the oil field according to claim 1, wherein: the frequency conversion control circuit comprises a stop instruction: the two parallel lines are respectively provided with an indicator light HG1 and an indicator light HR1, the two lines are also respectively provided with contacts of a relay KA, and the contacts on the two lines are in an interlocking relationship;
frequency conversion indication: the relay KA arranged between the line and the RC port of the frequency converter regulation and control module is matched with the two contacts of the relay KA on the stop indication (1) so as to indicate the running state of the frequency converter regulation and control module;
frequency conversion fault relay: the relay KA0 is arranged between the line and the TC port of the frequency converter regulation and control module, and the two ends of the relay KA0 are connected with the indicator light HY1 in parallel;
and (3) frequency conversion operation control: one end of the first contact of the relay KA3 is connected with the port of the frequency converter regulation and control module S1, and the other end of the first contact of the relay KA3 is connected with the COM port of the frequency converter regulation and control module;
the relay is characterized by further comprising a relay KA3 connected with a line, the other end of the relay KA3 is connected with one end of a normally closed electric shock of the relay KA0, the other end of the normally closed electric shock of the relay KA0 is connected with one end of a normally open button SB2, the other end of the normally closed electric shock of the relay KA0 is also connected with one end of a second contact of the relay KA3, the opening and closing state of the second contact of the relay KA3 is the same as the opening and closing state of the first contact of the relay KA3, the other end of the normally open button SB2 and the other end of the second contact of the relay KA3 are both connected with a first contact of a transfer switch SA1 arranged in the system, the second contact of the transfer switch SA1 is connected with one end of the normally closed button SB1, a third contact of the transfer switch SA1 is also connected with one end of the normally closed button SB1, and the other end of the normally closed button SB1 is connected with the line;
frequency conversion local/remote control: one end of the relay KA4 contact is connected with the port of the frequency converter regulation and control module S2, one end of the relay KA4 contact is also connected with the port of the frequency converter regulation and control module S4, and the other end of the relay KA4 contact is connected with the COM port of the frequency converter regulation and control module;
one end of a relay KM4 is connected with a circuit, and the other end of the relay KM4 is connected with a fourth contact of the change-over switch SA 1;
frequency conversion fault resetting: one end of a normally open button SB0 is connected with the S3 port of the frequency converter regulation and control module, and the other end of the normally open button SB0 is connected with the COM port of the frequency converter regulation and control module;
and the RA port and the TA port of the frequency converter regulation and control module are communicated with the circuit.
3. The variable frequency controller system for oil fields according to claim 1 or 2, wherein: the cabinet body also comprises a temperature controller, the temperature controller is connected with the power supply, and the temperature controller is also connected with a temperature sensor and a fan.
4. The variable frequency controller system for the oil field according to claim 3, wherein: the cabinet body is also provided with a wiring terminal strip which is respectively connected with an external port on the frequency converter regulation module so as to communicate with the outside.
5. The variable frequency controller system for the oilfield according to claim 4, wherein: still be provided with current transformer on the return circuit between circuit breaker and the converter on the operation return circuit, current transformer's the other end is connected with the input of strapping table, and the data of strapping table still carry out data communication for the RTU case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222826034.9U CN218733976U (en) | 2022-10-26 | 2022-10-26 | Frequency conversion controller system for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222826034.9U CN218733976U (en) | 2022-10-26 | 2022-10-26 | Frequency conversion controller system for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733976U true CN218733976U (en) | 2023-03-24 |
Family
ID=85591036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222826034.9U Active CN218733976U (en) | 2022-10-26 | 2022-10-26 | Frequency conversion controller system for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
-
2022
- 2022-10-26 CN CN202222826034.9U patent/CN218733976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203119818U (en) | Oil-pumping-unit dedicated switch reluctance motor speed regulation system | |
| CN105356576A (en) | Grid-connection type photovoltaic direct current microgrid system and operational control method therefor | |
| CN103291550A (en) | Novel full-hydraulic wind power system | |
| CN218733976U (en) | Frequency conversion controller system for oil field | |
| CN204906247U (en) | Frequency conversion compensation energy -saving control device of oil field beam -pumping unit | |
| CN105007022A (en) | Frequency-conversing compensating and energy saving control apparatus of oil pumping unit in oil fields | |
| CN104539197A (en) | Soft start and voltage reduction power saving comprehensive control device and method for asynchronous motor | |
| CN206546517U (en) | A kind of oil-field oil pumper energy-saving control system | |
| CN204416995U (en) | A kind of service machine power management system | |
| CN106774140A (en) | A kind of oil-field oil pumper energy-saving control method and control system | |
| CN102651602A (en) | Energy saving control method and device for energy storage batteries of asynchronous motor of beam-pumping unit | |
| CN201118513Y (en) | Efficiency optimization control system for three-phase inductance electromotor | |
| CN206313450U (en) | Low-voltage circuit regulator and system | |
| CN203278710U (en) | Novel magnetic control device of motor-type microcomputer | |
| CN202693675U (en) | Power circuit for intelligent electric meter and three-phase intelligent electric meter with power circuit | |
| CN202014222U (en) | Energy-saving frequency conversion compensation control cabinet | |
| CN205231854U (en) | Prepackage type substation operation state monitoring system based on thing networking | |
| CN201113895Y (en) | Oil pumping machine double-power automatic switchover energy-saving electrical distribution box | |
| CN2930095Y (en) | Power saving controller for oil field oil pumping unit | |
| CN203377598U (en) | Intelligent load balancing apparatus | |
| CN206585495U (en) | High-voltage motor intelligent energy-saving electric appliance | |
| CN201611866U (en) | Power-saving control cabinet of oil extractor | |
| CN202012334U (en) | Stepless speed regulating AC servo motor driving system | |
| CN204886782U (en) | Energy -saving variable frequency speed governing(VFSG) three phase machine | |
| CN209761413U (en) | Horizontal well condition detection control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |