CN108336747B - Star-shaped running energy-saving control cabinet of beam pumping unit - Google Patents
Star-shaped running energy-saving control cabinet of beam pumping unit Download PDFInfo
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- CN108336747B CN108336747B CN201810312522.3A CN201810312522A CN108336747B CN 108336747 B CN108336747 B CN 108336747B CN 201810312522 A CN201810312522 A CN 201810312522A CN 108336747 B CN108336747 B CN 108336747B
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- 238000005086 pumping Methods 0.000 title claims abstract description 95
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 230000001012 protector Effects 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- KJLPSBMDOIVXSN-UHFFFAOYSA-N 4-[4-[2-[4-(3,4-dicarboxyphenoxy)phenyl]propan-2-yl]phenoxy]phthalic acid Chemical compound C=1C=C(OC=2C=C(C(C(O)=O)=CC=2)C(O)=O)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(C(O)=O)C(C(O)=O)=C1 KJLPSBMDOIVXSN-UHFFFAOYSA-N 0.000 description 1
- 102100027284 Fanconi-associated nuclease 1 Human genes 0.000 description 1
- 101000914689 Homo sapiens Fanconi-associated nuclease 1 Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/32—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a beam-pumping unit turning star type operation energy-saving control cabinet, which comprises: the intelligent control cabinet comprises a control cabinet body, and a cabinet body outer door, a cabinet body inner door and a top cover which are connected to the cabinet body, wherein two air spring supporting rods are arranged between the cabinet body outer door and the cabinet body, a door magnetic switch assembly and a cabinet door lock are arranged on the cabinet body outer door, a time programming controller and a switch button box are arranged on the cabinet body inner door, a control cabinet circuit comprises a primary circuit and a secondary circuit, the primary circuit mainly comprises a triangle starting star-shaped operation energy-saving circuit and a triangle starting and operation circuit, the secondary circuit comprises a communication circuit, a working state monitoring circuit, a starting and stopping control circuit, an analog measuring circuit and a fault protection alarm circuit of the control cabinet and an upper computer, and the intelligent control cabinet realizes an energy-saving operation mode of triangle starting star-shaped operation of the beam pumping unit.
Description
Technical Field
The invention relates to the technical field of energy-saving control cabinets of beam-pumping units, in particular to a star-turning type operation energy-saving control cabinet of a beam-pumping unit.
Background
The beam pumping unit is used as main electric equipment of the mechanical system, the electric control cabinet is simpler in function, most of the beam pumping unit does not have the functions of energy conservation and consumption reduction, the motor load rate is very low when the beam pumping unit operates, the electric energy consumption is relatively large, the mechanical system is low in efficiency, and the cost of crude oil extraction is increased.
The oilfield mechanical extraction system at the present stage mainly has the following problems:
1. The motor of the beam pumping unit is connected in a triangular mode in order to ensure enough starting torque; the motor is also connected in a triangle mode in normal operation, so that the motor load rate is very low, the power utilization rate of the motor is low due to the fact that a large maraca trolley is low, the power factor is low, reactive power loss is large, electric energy waste is serious, the average power consumption reaches 20-50%, and the production electricity consumption cost is too high.
2. After years of exploitation, a great deal of low-yield oil wells exist in large domestic oil fields, the situation of insufficient liquid supply exists, the motor of the beam pumping unit runs under half load or light load, the work is large and the ageing is poor, so that the electric energy waste is large, the mechanical abrasion is large, and the maintenance cost is increased.
3. The oil pumping equipment of the oil field has wide quantity and wide distribution, and various working states in the production process can not be obtained in time; when the equipment fails, the comprehensive and effective protection cannot be provided; if the inspection is carried out only manually and regularly, the working efficiency is lower.
Therefore, it is very necessary to establish a set of beam pumping unit remote measurement and control system with complete information, reliable performance and strong practicability and energy saving and consumption reduction functions.
Disclosure of Invention
In order to solve the problems, the invention provides the star-shaped operation energy-saving control cabinet for the beam pumping unit, which solves the problems of large electric energy waste, low working efficiency, low intelligent degree and the like of the existing pumping unit, realizes the functions of energy saving, high efficiency and intelligent work of the pumping unit, and has the advantages of energy saving, yield increasing, high reliability, high intelligent degree and the like.
In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: a beam-pumping unit turning star type operation energy-saving control cabinet (hereinafter referred to as control cabinet), comprising: the cabinet body and connect cabinet body external door, cabinet body internal door and top cap on the cabinet body, install two air spring vaulting poles between cabinet body and the cabinet body external door, be provided with door magnetic switch subassembly and outer cabinet lock on the cabinet body external door, be provided with internal door lock, internal door lock down, time programming controller and shift knob box on the cabinet body internal door.
The circuit in the control cabinet comprises a primary loop and a secondary loop, wherein the primary loop mainly comprises a triangle starting turning star type operation energy-saving circuit and a triangle starting and operation circuit, the triangle starting turning star type operation energy-saving circuit is a common main loop, the triangle starting and operation circuit is used when the main loop fails and is used as a standby auxiliary loop, and the connection relation of the primary loop is as follows: the three-phase power supply inlet wire terminal is connected with the input end of a main power supply breaker of the control cabinet, the output end of the main power supply breaker is respectively connected with a main loop and an auxiliary loop, the main loop is composed of three vacuum alternating current contactors, the auxiliary loop is composed of two contactors, the main loop and the auxiliary loop are respectively connected in parallel after passing through two motor protectors, and finally are connected to two outlet wire terminals which are connected with windings of a motor of the beam pumping unit.
The primary loop also comprises two reactive compensation capacitors which are respectively connected to the incoming line terminal and the outgoing line terminal of the control cabinet through two circuit breakers. The on-site reactive compensation of the power end of the control cabinet and the motor end of the pumping unit is realized.
The secondary loop comprises a communication loop, a working state monitoring loop, a main loop and auxiliary loop start-stop control loop, an analog measuring loop and a fault protection alarm loop which are arranged between the control cabinet and the upper computer.
As a preferred technical scheme of this design, the communication loop of secondary circuit includes main remote controller, vice remote controller, wireless data acquisition box and communication antenna seat, the cabinet top cap install 3 communication antenna seats, 3 communication antenna seats are connected to the zigBee antenna interface of corresponding main, vice remote controller, wireless data acquisition box respectively through the radio frequency line. The main remote controller and the auxiliary remote controller are in wireless communication with a DTU terminal control cabinet on site through a built-in ZigBee module and an external antenna, and the DTU terminal control cabinet is in remote communication with an upper computer through a GPRS network; the wireless data acquisition box is communicated with a wireless sensor on site through the built-in ZigBee module and an external antenna.
As a preferable technical scheme of the design, the working state monitoring loop of the secondary loop comprises a main remote controller, an auxiliary remote controller, a time programming controller, a power box, a motor protector, a contactor, a door magnetic switch and a switch button, wherein the switching value input terminals of the main remote controller and the auxiliary remote controller are respectively connected to the working state contacts of the time programming controller, the power box, the motor protector, the door magnetic switch, the contactor and the switch button through wires.
As a preferred technical scheme of this design, the main loop control circuit of secondary circuit includes triangle-shaped commentaries on classics star control module A and B, main remote controller, time programming controller, motor protector, relay, contactor, current transformer, shift knob, triangle-shaped commentaries on classics star control module A and B realizes wireless communication through the zigBee module of built-in, triangle-shaped commentaries on classics star control module B passes through the wire and links to each other with relay, contactor, the main loop control terminal of main remote controller passes through the wire and is connected with time programming controller, motor protector, relay, contactor, shift knob, and time programming controller passes through the wire and links to each other with main remote controller, current transformer.
There are four ways of main loop start control: the system comprises a delay starting main loop, a manual starting main loop, a remote starting main loop and a intermittent pumping plan starting main loop.
1. And (3) starting a main loop in a delay manner: and when the power is restored after the power is off, the time programming controller and the main remote controller complete the main loop delay starting.
2. The main loop is manually started: the main loop starting button is pressed on the inner door of the cabinet body by the field personnel to start.
3. Remotely starting a main loop: and an operator of the monitoring center issues a remote starting main loop command to the upper computer, and the main remote controller of the control cabinet receives and executes the command.
4. The intermittent scheme starts the main loop: and an operator of the monitoring center issues a main loop intermittent drawing plan to the upper computer, and a main remote controller of the control cabinet stores and executes a startup plan according to the startup time.
And the triangle star-turning control modules A and B complete star-turning operation functions of the pumping unit motor after triangle starting. The triangular star-turning control module A is arranged on a beam of the pumping unit, the triangular star-turning control module B is arranged in the control cabinet, and the triangular star-turning control module A and the triangular star-turning control module B realize wireless communication through the built-in ZigBee module. The triangle-shaped star-turning control module B is connected with the relay and the contactor through leads.
When the motor of the pumping unit is started in a triangle mode and operates for a period of time (the time is set by a dial switch of a triangle-shaped star-turning control module B) to enable the mechanical system to be stable, the triangle-shaped star-turning control module A sends out a wireless signal when detecting that the pumping unit goes down after passing through a balance point, and the triangle-shaped star-shaped control module B in the control cabinet receives the signal and controls the triangle-shaped star-shaped connection contactor to be connected after being disconnected, and the pumping unit motor starts to operate by the star-shaped connection.
There are four ways of main loop stop control: manual stop main loop, remote stop main loop, intermittent pull-out plan stop main loop and failsafe stop.
1. The main loop is manually stopped: the on-site operator presses a main loop stop button on an operation panel of the inner door of the cabinet body to stop the machine.
2. Remotely stopping the main loop: and an operator of the monitoring center sends a main loop remote stop command to the upper computer, and a main controller in the control cabinet receives and executes a stop command.
3. The interval plan stops the main loop: and an operator of the monitoring center issues a main loop intermittent pumping plan to the upper computer, and a main remote controller of the control cabinet stores and executes a shutdown plan according to shutdown time.
4. The time programming controller detects overvoltage, undervoltage and overcurrent faults or the main loop motor protector detects open-phase and overload faults, and the time programming controller or the main loop motor protector controls the stop.
As a preferable technical scheme of the design, the secondary loop control loop of the secondary loop comprises a main remote controller, a motor protector, a relay, a contactor and a switch button, wherein a secondary loop control terminal of the main remote controller is respectively connected with the motor protector, the relay, the contactor and the switch button through wires.
The auxiliary loop starting control has three modes: a manual start secondary loop, a remote start secondary loop and a intermittent pumping plan start secondary loop.
1. Manual start secondary circuit: the pumping unit is started by a field person pressing a secondary loop starting button on the inner door of the cabinet body.
2. Remote start secondary loop: and an operator of the monitoring center issues a remote auxiliary loop starting command to the upper computer, and the main remote controller of the control cabinet receives and executes the auxiliary loop starting command.
3. The intermittent pumping plan starts a secondary loop: and an operator of the monitoring center issues a secondary loop intermittent drawing plan to the upper computer, and the control cabinet main remote controller stores and executes a startup plan according to the startup time.
The secondary loop stop control has four modes: manual stopping of the secondary loop, remote stopping of the secondary loop, planned stopping of secondary loop intermittent pumping and fault protection shutdown.
1. Manual stop secondary loop: the on-site operator presses the auxiliary loop stop button on the door operation panel in the cabinet body to stop the machine.
2. Remote stop secondary loop: and an operator of the monitoring center sends a remote stop command of the auxiliary loop to the upper computer, and a main controller in the control cabinet receives and executes a stop command.
3. Secondary loop intermittent pumping planning stops: and an operator of the monitoring center issues a secondary loop intermittent pumping plan by an upper computer, and a control cabinet main remote controller stores and executes a shutdown plan according to shutdown time.
4. The time programming controller detects overvoltage, undervoltage and overcurrent faults or the auxiliary loop motor protector detects open-phase and overload faults, and the time programming controller or the auxiliary loop motor protector controls the machine to stop.
As a preferred technical scheme of this design, analog quantity measuring circuit includes main, vice remote controller and analog quantity terminal box, electric power parameter monitor, current transformer, wireless collection box, power pack, analog quantity terminal box is connected to main through the shielded wire, vice remote controller analog quantity input terminal, electric power parameter monitor, wireless collection box passes through 485 interface connection to main remote controller, electric power parameter monitor passes through the wire and is connected with current transformer, power pack direct current power output terminal is connected to main, vice remote controller, analog quantity terminal box respectively, the direct current power supply terminal of wireless collection box.
The analog input port of the auxiliary remote controller is connected with the analog terminal box through a wire. The power supply box provides a main remote controller, an auxiliary remote controller, a wireless acquisition box and a direct current working power supply of a sensor externally connected through an analog terminal box. The main remote controller and the auxiliary remote controller collect wired sensor signals through the analog quantity terminal box, collect the data of the indicator diagram instrument and other wireless sensor data through the wireless collection box, and collect the electric power parameters through the electric power parameter monitor.
As a preferable technical scheme of the design, the fault protection alarm loop comprises a main remote controller, an auxiliary remote controller, a door magnetic switch, a time programming controller, a power supply box and a motor protector. The switch value input terminals of the main remote controller and the auxiliary remote controller are respectively connected with the door magnetic switch, the time programming controller, the power supply box and the alarm contacts of the motor protector through wires. The time programming controller monitors overvoltage, undervoltage and load overcurrent faults of the power grid voltage, and the motor protector monitors the open-phase and overload faults of the motor of the pumping unit. After the fault occurs, the time programming controller or the motor protector controls the automatic protection to stop. The door magnetic switch detects the opening and closing state of the cabinet door. The power box has relay output contacts for detecting the power supply state. And after the main remote controller and the auxiliary remote controller detect the state change of the alarm contact, the corresponding alarm information is immediately uploaded to the upper computer.
As a preferred technical scheme of this design, cabinet external door frame and cabinet internal door frame correspond the position with the cabinet body and install elastic rubber sealing strip, be rain-proof sealing state after the cabinet door is closed.
As a preferable technical scheme of the design, two breaker operating mechanisms are arranged on the outer side of the inner door of the cabinet body, one is a control cabinet main power supply breaker operating mechanism, and the other is a bypass breaker operating mechanism.
As a preferable technical scheme of the design, a main loop operation button group and an auxiliary loop operation button group are arranged on the outer side of the inner door of the cabinet body.
The beneficial effects of the invention are as follows:
1. The control cabinet of the invention collects working conditions and data of the mechanical mining system in real time and uploads the working conditions and the data to the upper computer remotely, operators of the upper computer can check various basic data such as switch states, work diagram data, electric power parameters, flow, liquid level, pressure and the like and report curves in real time, provides reference data for making working system and optimizing operation for production management, and realizes the comprehensive real-time collection function of the mechanical mining system data.
2. The load balancing is carried out on the pumping unit through analyzing the electric power parameters acquired by the control cabinet, so that the pumping unit stably operates, and the electric energy waste is reduced; the motor of the oil pumping unit is converted from triangular starting to star-shaped running through the control cabinet, so that the working current of the motor is reduced, and the electric energy is saved; reactive loss is reduced by inputting the compensation capacitor, the power factor is improved, and the power consumption of the pumping unit is further reduced; the control cabinet realizes an automatic intermittent pumping working system, improves pump efficiency, avoids empty pumping, and realizes yield increase to a certain extent.
3. When the pumping unit fails, the automatic protection is stopped, the alarm information is uploaded to the upper computer, the upper computer is reached within ten seconds under the condition of normal communication, and the upper computer carries out sound and picture pushing alarm. The system has strong network monitoring capability, and timely notifies the people to process when the manual timing inspection becomes problematic, so that real unattended management is realized, and the working efficiency is improved.
4. The control cabinet is provided with a main loop (triangle starting star-shaped operation) control system and an auxiliary loop (triangle starting and operation) control system, can be changed into auxiliary loop control after the main loop fails, and does not influence the normal operation of the pumping unit during the maintenance of the main loop.
5. Because the wireless GPRS mobile communication technology is adopted, a base station is not required to be erected, a special communication cable is not required to be laid from an operation site to a monitoring center, and the system adopts a modularized design and is simple in engineering construction and installation.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a beam-pumping unit turning star type operation energy-saving control cabinet;
FIG. 2 is a table of comparison of elements in a rotary star type running energy-saving control cabinet of a beam-pumping unit;
FIG. 3 is a schematic circuit diagram of a primary circuit in a rotary star-type operation energy-saving control cabinet of a beam-pumping unit;
FIG. 4 is a schematic circuit diagram of a secondary instrument in a beam-pumping unit turn star type operation energy-saving control cabinet;
FIG. 5 is a schematic circuit diagram of secondary start-stop control in a rotary star-type running energy-saving control cabinet of a beam-pumping unit;
fig. 6 is a schematic layout structure of an operation panel on a door in a cabinet.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The application is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the application easy to understand. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
As shown in fig. 1 and 2, a star-shaped operation energy-saving control cabinet for a beam pumping unit comprises: the control cabinet comprises a control cabinet body 14, a cabinet body outer door 1, a cabinet body inner door 2 and a cabinet top cover 16, wherein the cabinet body 14 is connected with the cabinet body outer door 1 through two air spring supporting rods 13, the outer cabinet door 1 is provided with a door magnetic switch assembly 3 and an outer cabinet door lock 9, the door magnetic switch assembly 3 is used for detecting a cabinet door switch state, an inner cabinet door 2 is provided with an inner cabinet door lock 4, an inner cabinet door lower lock 11 and a switch button box 5, and a communication antenna base 15 is arranged on the cabinet top cover 16.
As a preferred technical scheme of this design, the cabinet is external 1 frame and cabinet is internal 2 frame and cabinet is corresponding the position and is installed elastic rubber sealing strip 8, is rain-proof sealed state after the cabinet door is closed.
The cabinet 14 is internally provided with a circuit breaker 27, a single-piece switch 19, a remote controller (left main and right auxiliary), a power box 20, a power parameter monitor 24, a main loop vacuum contactor 28, an auxiliary loop contactor 10, a triangular star-turning control module B25, an auxiliary loop motor protector 31, a main loop motor protector 32, a capacitor switching circuit breaker 33, a wire inlet terminal 34, a wire outlet terminal 35, a wireless work diagram box 21, a lightning arrester 17, a current transformer 29, a compensation capacitor 36, a cooling fan 18 and a heating plate 30.
Fig. 3 shows a primary loop, which comprises a three-phase power supply incoming line terminal XT1, wherein the three-phase power supply incoming line terminal is connected with the input end of a main power supply breaker ZK1 of a control cabinet, the output end of the main power supply breaker ZK1 is respectively connected with a main loop and an auxiliary loop, a triangular starting star-shaped running energy-saving circuit of a motor of the beam pumping unit is the main loop, and a triangular starting and running circuit is the auxiliary loop.
The main loop consists of three vacuum alternating current contactors (KM 1, KM2 and KM 3), the auxiliary loop consists of a bypass breaker (ZK 2) and two vacuum contactors (KM 4 and KM 5), the main loop and the auxiliary loop are respectively connected in parallel after passing through two motor protectors (JK 1 and JK 2), and finally connected to an outgoing terminal (XT 2 and XT 3), and the outgoing terminal is connected with winding taps (U1, V1, W1, U2, V2 and W2) of a beam pumping unit motor D1.
The primary loop is provided with current transformers (CT 1-CT 5) for current measurement; the time programming controller measures current signals through CT1, CT2, and the power parameter monitor measures current signals through CT4, CT5 and CT 6.
The primary loop also comprises two reactive compensation capacitors C1 and C2 which are respectively connected to the incoming line terminal XT1 and the outgoing line terminal XT2 of the control cabinet through two circuit breakers ZK3 and ZK 4. The on-site reactive compensation of the power end of the control cabinet and the motor end of the pumping unit is realized, the power factor of the power utilization system of the pumping unit is improved, and the reactive power loss is reduced.
The primary circuit is also provided with a lightning arrester (FS) for providing protection to the device when it is struck by lightning.
The secondary instrument loop comprises a communication loop, a working state monitoring loop, a primary loop and secondary loop start-stop control loop, an analog measuring loop and a fault protection alarm loop as shown in fig. 4.
The communication loop is shown in fig. 4, and comprises a main remote controller, an auxiliary remote controller and a wireless acquisition box, wherein the main remote controller, the auxiliary remote controller and the wireless acquisition box are respectively provided with an antenna interface, the cabinet top cover is provided with 3 communication antenna seats, and the 3 communication antenna seats are respectively connected to the corresponding main remote controller, the auxiliary remote controller and the wireless acquisition box antenna interface. The main remote controller and the auxiliary remote controller are in wireless communication with a DTU terminal control cabinet (not shown in the figure) on site through a built-in ZigBee module and an antenna, and remote communication is realized through a GPRS network by the DTU terminal control cabinet and an upper computer; the wireless acquisition box realizes acquisition of wireless analog quantity through the built-in ZigBee module and the antenna and the wireless sensor on site.
As shown in fig. 4, the main remote controller is used as a core main control unit of the control cabinet, so that wireless communication with an upper computer, remote control, on-off state acquisition and analog data acquisition are realized. The main remote controller is respectively connected with a time programming controller, a power supply box, an electric power parameter monitor, a wireless acquisition box, an analog terminal box, motor protectors (JK 1, JK 2), intermediate relays (KA 1, KA 2), contactors (KM 1, KM2, KM 3) and switch buttons (SA 1, SB1, SBS1, SA2, SB2, SBS 2) through wires. The main remote controller starts the dry joint J4A-1 through the main loop, and the main loop stops the dry joint J4A-2 to be matched with other electric elements, so that the start and stop control of the pumping unit in a main loop remote or local control mode is realized; the main remote controller starts the dry junction J4A-3 through the auxiliary loop, and the auxiliary loop stops the dry junction J4A-4 to be matched with other electric elements, so that the start and stop control of the pumping unit under the auxiliary loop remote or local control mode is realized. The main remote controller monitors the running states of the oil pumping unit and the control cabinet in real time through the switching value input port, the electric power parameter monitor connected through the 485 interface realizes the collection of electric power parameters, the wireless collection box connected through the 485 interface collects the data of the indicator diagram and the data of other wireless sensors, and the sensor connected with the analog terminal box collects the data of analog values such as temperature, liquid level, pressure and the like.
As shown in fig. 4, the secondary remote controller is connected with the power supply box and the analog terminal box through wires, respectively, and provides an extended switching value and analog interface.
As shown in fig. 4, the triangle-type turning star control module comprises a triangle-type turning star control module a (not shown) installed on a beam of the pumping unit and a triangle-type turning star control module B arranged in a control cabinet. When the motor of the pumping unit is started in a triangular mode and operates for a period of time (the time is set by a dial switch of a triangular star-shaped control module B), after the mechanical system is stable, a wireless signal is sent out by a triangular star-shaped control module A on a beam of the pumping unit when the beam of the pumping unit downstrokes after the beam of the pumping unit passes through a balance point, the triangular star-shaped control module B in a control cabinet receives the signal, a normally closed dry contact of the module B is firstly disconnected, a triangular vacuum contactor is controlled to be disconnected, a normally open dry contact of the module B is connected again, a star-shaped vacuum contactor is controlled to be connected, and the motor of the pumping unit operates in a star-shaped connection mode. The two contactors are interlocked by the normally closed contacts and cannot be simultaneously turned on.
As shown in fig. 4, the time programming controller is connected with the main remote controller and the current transformers CT1 and CT2 through wires. The time programmed controller can measure the line voltage and the load current through the current transformers CT1, CT 2. The parameters such as an overvoltage protection value, an undervoltage protection value, an overcurrent protection value and the like can be set through a panel key of the time programming controller, when the real-time value measured by the time programming controller exceeds a set value, protection action is immediately executed, the pumping unit is stopped, the time programming controller is closed corresponding to an alarm dry contact, alarm information is transmitted to a corresponding switching value input port of the main remote controller, and the main remote controller immediately uploads the alarm information to the upper computer; the time programming controller can also set a cycle plan of the pumping unit started and stopped according to time, and realizes automatic start and stop control in a local control mode.
As shown in fig. 4, motor protectors JK1, JK2: the motor comprehensive protector is designed for burning the motor due to faults such as open phase and overload during operation of the three-phase motor, and has the function of open phase and overload protection. The overload current and overload time of the motor protector are respectively set by two dial switches, when the motor is out of phase and overloaded, the motor protector executes protection action, the pumping unit is stopped, the alarm contacts of the motor protectors JK1 and JK2 are closed, alarm information is transmitted to a corresponding switch value input port of the main remote controller, and the main remote controller immediately uploads the alarm information to the upper computer.
As shown in fig. 4, the power parameter monitor is respectively connected with the main remote controller and the current transformers CT3, CT4 and CT5 through wires to realize power parameter collection; the power parameters comprise 33 power parameters such as line voltage, phase voltage, current per phase, power factor, reactive power, active power, apparent power data and the like, the power parameter monitor is connected to the main remote controller through a 485 interface, and the main remote controller automatically uploads the power parameters to the upper computer every 10 minutes.
As shown in fig. 4, the power supply box is connected to the main remote controller, the auxiliary remote controller, the analog quantity terminal box and the wireless acquisition box through wires. The power supply box converts alternating current power supply into direct current power supply for output, and provides the direct current power supply for the main remote controller, the auxiliary remote controller, the wireless data acquisition box and the analog terminal box, and the power supply is provided for the two remote controllers through the built-in batteries after power failure.
As shown in fig. 4, the wireless data acquisition box acquires the data of the wireless indicator and the wireless sensor, and then transmits the data to the main remote controller through the 485 interface, and the main remote controller uploads the data to the upper computer.
As shown in fig. 4, the analog terminal box is used for connecting wired sensors of liquid level, pressure, temperature, etc. The power supply box converts an alternating current power supply into a direct current power supply, and is connected to the analog quantity terminal box through a wire for providing a direct current working power supply for the sensor.
As shown in fig. 4, the working state monitoring loop comprises a main remote controller and an auxiliary remote controller, the switching value input interfaces of the two controllers are connected with the switching contacts of the time programming controller, the power supply box, the motor protectors JK1 and JK2, the intermediate relays KA1 and KA2, the contactors KM 1-KM 5 and the switch buttons SA1 and SA2 through wires, and the main remote controller and the auxiliary remote controller acquire the running states of the pumping unit and the control cabinet through detecting the on-off states of the contact points of the elements.
As shown in fig. 4, the analog measurement loop comprises a main remote controller, a secondary remote controller, an analog measurement terminal box, a power parameter monitor and a wireless acquisition box. The main remote controller and the auxiliary remote controller collect wired sensor signals connected with the main remote controller through the analog terminal box; the main remote controller is communicated with the wireless data acquisition box through a 485 interface and acquires wireless indicator diagram instrument data and other wireless sensor data; the main remote controller is communicated with the power parameter monitor through a 485 interface and collects the power parameters of the pumping unit.
As shown in FIG. 4, the fault protection alarm circuit comprises a main remote controller, a secondary remote controller, a time programming controller, motor protectors JK1 and JK2, a door switch MK1 and a power box. The time programming controller monitors overvoltage, undervoltage and load overcurrent faults of the power grid voltage, and the motor protectors JK1 and JK2 monitor open-phase and overload faults of the pumping unit motor. And after the fault occurs, the pumping unit is immediately protected to stop. The power box is internally provided with a circuit for monitoring the power supply state and a relay output contact, and the door magnetic switch MK1 monitors the switch state of the door outside the cabinet body. And after the switch value input point of the main remote controller detects the change of the on-off state of the contact, the corresponding alarm information is immediately uploaded to the upper computer.
As shown in fig. 5, the primary loop and the secondary loop start-stop control loop. There are four ways of main loop start control: delay start, manual start, remote start and intermittent start stop plan start.
1. And (3) starting in a time delay mode: when the power supply is restored after the power of the control cabinet is cut off, after 10 seconds, contacts of the time programming controller CESK-1 are closed for the first time, the suction sum (a triangle wiring mode) of the contactors KM1 and KM2 is controlled, and the pumping unit is started; after a certain time (address of the main remote controller is multiplied by 6 seconds) passes through the main remote controller for the second time, the J4A-1 contact is closed, the contactors KM1 and KM2 (triangle wiring mode) are controlled to suck, and the pumping unit is started. In this activated mode the selector switch SA1 is to be actuated to a remote position.
2. And (3) manual starting: the on-site operator presses a start button SB1 on an operation panel of the inner door of the cabinet body to control the contactors KM1 and KM2 to suck and finish starting. In this activated mode the selector switch SA1 is to be switched to the home position.
3. Remote starting: and an operator of the remote monitoring center sends a main loop starting command to the main remote controller on the upper computer, contacts of the main remote controller J4A-1 are closed, and the contactors KM1 and KM2 are sucked and started. In this activated mode the selector switch SA1 is to be actuated to a remote position.
4. Intermittent start-stop plan start: and an operator of the remote monitoring center accesses the upper computer to realize a main loop inter-pumping start-stop plan, and a main remote controller of the control cabinet receives and stores the drawing start-stop plan. After the starting time, the contacts of the main remote controller J4A-1 are closed, and the contactors KM1 and KM2 suck and complete starting. In this activated mode the selector switch SA1 is to be actuated to a remote position.
As shown in fig. 5, when the motor of the pumping unit is started in a delta mode and operates for a period of time (the time is set by the dial switch of the delta star-shaped turning control module B) to stabilize the mechanical system, the delta star-shaped turning control module a on the beam of the pumping unit sends out a wireless signal when the pumping unit goes down after passing through a balance point, the delta star-shaped turning control module B in the control cabinet receives the signal, the normally closed dry contact of the module B is firstly disconnected to control the disconnection of the delta vacuum contactors KM1 and KM2, the normally open dry contact of the module B is connected to control the suction and the suction of the star vacuum contactors KM1 and KM3, and the motor of the pumping unit operates in a star connection mode. The two contactors are interlocked by the normally closed contacts and cannot be simultaneously turned on.
As shown in fig. 5, there are four ways of the main loop stop control: manual shutdown, remote shutdown, intermittent start-up and stop planning shutdown and fault protection shutdown.
1. And (3) manually stopping: the stop button SBS1 is pressed on the inner door operation panel of the cabinet body by a field operator, the main loop contactor is released, and the pumping unit is stopped. In this stop mode the selector switch SA1 is to be switched to the home position.
2. And (3) remotely stopping: and an operator of the remote monitoring center sends a main loop stop command to the main remote controller on the upper computer, the contact J4A-2 of the main remote controller is disconnected, the main loop contactor is released, and the pumping unit is stopped. In this stop mode the selector switch SA1 is to be actuated to a remote position.
3. Intermittent start-stop plan stop: and an operator of the remote monitoring center accesses the upper computer to achieve the intermittent pumping start-stop plan, and the control cabinet main remote controller receives and stores the intermittent pumping start-stop plan. And when the stopping time is reached, the contact J4A-2 of the main remote controller is opened, the main loop contactor is released, and the pumping unit is stopped. In this stop mode the selector switch SA1 is to be actuated to a remote position.
4. And (3) fault protection shutdown: when the faults of open phase, overload, overvoltage, undervoltage and overcurrent occur, the main loop contactor is released, and the pumping unit is stopped.
As shown in fig. 5, there are three ways of the secondary loop start control: manual start, remote start, and intermittent start stop schedule start.
1. And (3) manual starting: the on-site operator presses a start button SB2 on an inner door operation panel of the cabinet body, and the contactors KM4 and KM5 suck and start the pumping unit; in this activated mode the selector switch SA2 is to be switched to the home position.
2. Remote starting: an operator of a remote monitoring center sends an auxiliary loop starting command to a main remote controller on an upper computer, contacts of the main remote controller J4A-3 are closed, contactors KM4 and KM5 suck, and an oil pumping unit starts; in this activated mode the selector switch SA2 is to be actuated to a remote position.
3. Intermittent start-stop plan start: a remote monitoring center operator reaches a pumping start-stop plan between the auxiliary loops on an upper computer, a control cabinet main remote controller receives and stores, contacts of the main remote controller J4A-3 are closed after starting time, contactors KM4 and KM5 suck and the pumping unit starts; in this activated mode the selector switch SA2 is to be actuated to a remote position.
As shown in fig. 5, the secondary loop shutdown control has four modes: manual shutdown, remote shutdown, intermittent start-up and stop planning shutdown and fault protection shutdown.
1. And (3) manually stopping: the on-site operator presses a secondary loop stop button SBS2 on a cabinet inner door operation panel, the contactors KM4 and KM5 are released, and the pumping unit is stopped; in this stop mode the selector switch SA2 is to be switched to the home position.
2. And (3) remotely stopping: an operator of a remote monitoring center sends a remote shutdown command of the auxiliary loop to a main remote controller on an upper computer, contacts J4A-4 of the main remote controller are disconnected, contactors KM4 and KM5 are released, and the pumping unit is shut down; in this shut down mode the selector switch SA2 is actuated to a remote position.
3. Intermittent start-stop plan stop: and a remote monitoring center operator reaches a drawing start-stop plan between the auxiliary loop and the upper computer to the main remote controller of the control cabinet, contacts of the main remote controller J4A-4 are disconnected after the shutdown time, and the contactors KM4 and KM5 release the shutdown. In this shut down mode the selector switch SA2 is actuated to a remote position.
4. And (3) fault protection shutdown: when the faults of phase failure, overload, overvoltage, undervoltage and overcurrent occur, the contactors KM4 and KM5 are released, and the pumping unit is stopped.
As shown in fig. 5, as a preferred technical scheme of the design, the control cabinet is further provided with a constant temperature dehumidification device. The constant temperature dehumidification device comprises a cooling fan, a heating plate and a temperature control switch.
The two radiating FANs are two, the two radiating FANs FAN1 and FAN2 are connected with the temperature control switch ST2 to form a serial loop, two ends of the loop are connected with a working power supply (AC 380V), when the temperature in the cabinet body is higher than 40 ℃, the contacts of the temperature control switch ST2 are closed, and the FANs are started to radiate heat; when the temperature in the cabinet body is lower than 40 ℃, the contact of the temperature control switch ST2 is opened, and the fan is closed.
The two heating plates are connected with the temperature control switch ST1 to form a serial loop, two ends of the loop are connected with a working power supply (AC 380V), when the temperature in the cabinet is lower than 20 ℃, the contacts of the temperature control switch ST1 are closed, and the heating plates are electrified to heat and dehumidify; when the temperature inside the cabinet is higher than 20 ℃, the contact of the temperature control switch ST1 is disconnected, and the heating plate is powered off.
As shown in fig. 6, as a preferred technical solution of the present design, a main loop operation button group ① and a sub loop operation button group ② are further disposed on the outer side of the inner door of the cabinet.
The selector switch ① is used to select the remote/local control mode of the main circuit, and the start/stop button ① is used to locally control the on/off of the main circuit to start/stop the pumping unit.
The selector switch ② is used for selecting a remote/local control mode of the auxiliary circuit, and the start/stop button ② is used for locally controlling the on-off of the auxiliary circuit to start and stop the pumping unit.
As a preferred technical scheme of this design, the interior cabinet door outside is provided with circuit breaker operating device, and circuit breaker operating device includes bypass circuit breaker operating device and switch board power circuit breaker operating device, and bypass circuit breaker operating device is used for controlling vice return circuit power break-make, and switch board power circuit breaker operating device is used for controlling the switch board total power break-make.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing embodiments and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications fall within the scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a beam-pumping unit changes star formula operation energy-saving control cabinet which characterized in that:
Including the switch board body and connect cabinet external door, cabinet internal door and the top cap on the cabinet body, cabinet external door and cabinet body between install two air spring vaulting poles, cabinet external door on be provided with door magnetic switch module and cabinet external door lock, cabinet internal door on be provided with time programming controller and shift knob box, the switch board in the circuit include primary loop and secondary loop, the primary loop mainly including triangle start-up change star type operation economizer circuit and triangle start-up and operation circuit, triangle start-up change star type operation economizer circuit is the main loop of ordinary use, triangle start-up and operation circuit uses when main loop trouble, for reserve accessory loop, primary loop relation of connection is: the three-phase power supply inlet wire terminal is connected with the input end of a main power supply breaker of the control cabinet, the output end of the main power supply breaker is respectively connected with a main loop and an auxiliary loop, the main loop is composed of three vacuum alternating current contactors, the auxiliary loop is composed of two contactors, the main loop and the auxiliary loop are respectively connected in parallel after passing through two motor protectors, and finally are connected to two outlet wire terminals, the two outlet wire terminals are connected with windings of a beam pumping unit motor, the secondary loop comprises a communication loop, a working state monitoring loop, a main loop and auxiliary loop start-stop control loop, an analog measuring loop and a fault protection alarm loop of the control cabinet and an upper computer, and the main loop control loop comprises a triangular star-turning control module A arranged on a beam of the pumping unit and a triangular star-turning control module B arranged in the control cabinet;
The communication loop of the secondary loop comprises a main remote controller, an auxiliary remote controller, a wireless acquisition box and communication antenna bases, 3 communication antenna bases are arranged on the top cover, and the 3 communication antenna bases are respectively connected to ZigBee antenna interfaces of the corresponding main remote controller, the corresponding auxiliary remote controller and the wireless data acquisition box through radio frequency wires;
The working state monitoring loop of the secondary loop comprises a main remote controller, an auxiliary remote controller, a time programming controller, a power box, a motor protector, a contactor, a door magnetic switch and a switch button, wherein the switching value input terminals of the main remote controller and the auxiliary remote controller are respectively connected to the working state contacts of the time programming controller, the power box, the motor protector, the door magnetic switch, the contactor and the switch button through wires;
The main loop control loop of the secondary loop comprises triangular turn star control modules A and B, a main remote controller, a time programming controller, a motor protector, a relay, a contactor, a current transformer and a switch button, wherein the triangular turn star control modules A and B realize wireless communication through a built-in ZigBee module, the triangular turn star control module B is connected with the relay and the contactor through wires, and a main loop control terminal of the main remote controller is connected with the time programming controller, the motor protector, the relay, the contactor and the switch button through wires, and the time programming controller is connected with the main remote controller and the current transformer through wires;
The secondary loop control loop of the secondary loop comprises a main remote controller, a motor protector, a relay, a contactor and a switch button, wherein a secondary loop control terminal of the main remote controller is respectively connected with the motor protector, the relay, the contactor and the switch button through wires;
The analog quantity measuring circuit of the secondary circuit comprises a main remote controller, an auxiliary remote controller, an analog quantity terminal box, an electric power parameter monitor, a current transformer, a wireless acquisition box and a power supply box, wherein the analog quantity terminal box is connected to an analog quantity input terminal of the main remote controller through a shielding wire, the electric power parameter monitor and the wireless acquisition box are connected to the main remote controller through 485 interfaces, the electric power parameter monitor is connected with the current transformer through wires, and a direct current power supply output terminal of the power supply box is respectively connected to the main remote controller, the auxiliary remote controller, the analog quantity terminal box and a direct current power supply terminal of the wireless acquisition box;
The fault protection alarm circuit of the secondary circuit comprises a main remote controller, an auxiliary remote controller, a door magnetic switch, a time programming controller, a power supply box and a motor protector, wherein the switching value input terminal of the main remote controller is respectively connected with alarm contacts of the door magnetic switch, the time programming controller, the power supply box and the motor protector through wires;
The primary loop also comprises two reactive compensation capacitors which are respectively connected to the incoming line terminal and the outgoing line terminal of the control cabinet through two circuit breakers.
2. The beam-pumping unit turn star type operation energy-saving control cabinet according to claim 1, wherein: the cabinet door is characterized in that elastic rubber sealing strips are arranged at the positions of the outer door frame of the cabinet body and the corresponding positions of the inner door frame of the cabinet body and the cabinet body, and the cabinet door is in a rainproof sealing state after being closed.
3. The beam-pumping unit turn star type operation energy-saving control cabinet according to claim 1, wherein: two breaker operating mechanisms are arranged on the outer side of the door in the cabinet body, one is a control cabinet main power supply breaker operating mechanism, and the other is a bypass breaker operating mechanism.
4. The beam-pumping unit turn star type operation energy-saving control cabinet according to claim 1, wherein: the outer side of the cabinet body door is provided with a main loop operation button group and an auxiliary loop operation button group.
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| CN110545052A (en) * | 2019-09-03 | 2019-12-06 | 广东广顺新能源动力科技有限公司 | Control system for increasing starting torque of star connection three-phase motor |
| CN112731845A (en) * | 2020-12-29 | 2021-04-30 | 西安长拓电气自动化有限责任公司 | Multifunctional time programming control meter |
| CN112698607A (en) * | 2020-12-29 | 2021-04-23 | 西安长拓电气自动化有限责任公司 | Multifunctional wireless data acquisition controller |
| CN113641154B (en) * | 2021-07-20 | 2023-07-25 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for DCS system of air compressor and DCS control method |
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