CN109213052B - Control system applied to drilling plug pumping - Google Patents
Control system applied to drilling plug pumping Download PDFInfo
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- CN109213052B CN109213052B CN201811276243.2A CN201811276243A CN109213052B CN 109213052 B CN109213052 B CN 109213052B CN 201811276243 A CN201811276243 A CN 201811276243A CN 109213052 B CN109213052 B CN 109213052B
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- 238000005086 pumping Methods 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2607—Infusion controller
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Multiple Motors (AREA)
Abstract
A control system applied to drilling plug pumping, an electric control device comprises: the system comprises a well site power grid, a No. 1 pump variable frequency inverter, a No. 2 pump variable frequency inverter, a dry adding frequency converter and a liquid adding frequency converter; the well site power grid is used for supplying power to the whole control system; the control device comprises: a main CPU; the main CPU is used for receiving external instructions and controlling the 1# pump variable frequency inverter and the 2# pump variable frequency inverter, so that the rotational speeds of the 1# pump variable frequency motor and the 2# pump variable frequency motor are controlled to realize the control of the discharge capacity, and the main CPU controls the start, stop and speed regulation of the dry adding motor and the liquid adding motor by controlling the dry adding frequency converter and the liquid adding frequency converter, so as to realize the control of the dry adding and liquid adding feeding amount. The invention can realize the access of electric energy from a high-voltage power grid, realize the automatic material adding and proportioning and the automatic pumping by controlling the operation of a motor of a system, and realize three control modes of a local control box, an electric control room and a handheld movable device.
Description
Technical Field
The invention relates to the field of petroleum machinery and well repair and completion operation equipment, in particular to an automatic control system for drilling, plugging and pumping.
Background
The following problems exist with the current compounding system formulations: the manual addition of chemicals is inaccurate in measurement, the operation condition is bad, the operation strength is high, certain environmental pollution exists, and the waste of manpower and material resources is easily caused; the liquid preparation and pumping links are single and separate, the relative independent automation degree of the water supply system, the stirring system, the slurry mixing system and the injection system is low, and the functions of linkage cooperative adjustment, continuous mixing and instant injection cannot be realized.
Along with the gradual expansion and deep development of shale gas, all equipment companies start from the convenience and integration of equipment, and through analysis optimization of the existing field operation flow, a working flow capable of realizing accurate addition of various additives, continuous mixing of drilling and plugging liquid and circulating pumping of the drilling and plugging liquid which is mixed and injected is provided. In order to meet the requirements of the above process, it is necessary to design a control method and device.
From the perspective of environmental protection and energy saving, the use of pure electric driving equipment has become a trend on the basis of the developed power grid structure of the current oil field. The oil field high-voltage power supply is adopted as a power supply, so that the atmospheric pollution caused by the combustion of fossil fuel of a diesel engine on site is removed, and meanwhile, the traditional mode of an engine and a transmission case is replaced by a mature alternating-current variable-frequency driving mode, so that the energy efficiency is improved, the noise is reduced, and the overall equipment control performance is improved. The control system realizes the adjustment of the actuating mechanisms such as the frequency converter, the electromagnetic valve and the like through the feedback of sensors such as weight, flow, temperature, liquid level and the like and the operation of a program algorithm. Thereby respectively realizing the precise control of liquid addition, the precise control of dry material addition, the precise control of a pumping-out system and the full-flow automatic control based on proportion setting.
Disclosure of Invention
The invention aims to provide a control system applied to drilling plug pumping, which aims to realize electric energy access from a high-voltage power grid by designing a set of electric control device, drive two main large pump motors to operate through a power distribution, rectification and inversion transmission system, and realize automatic material adding proportion and automatic pumping through controlling the operation of the system motors.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a be applied to control system that drilling plug pump annotates which characterized in that: the control system includes: the electronic control device and controlling means, wherein the electronic control device includes: the system comprises a well site power grid, a No. 1 pump variable frequency inverter, a No. 2 pump variable frequency inverter, a dry adding frequency converter and a liquid adding frequency converter; the well site power grid is used for supplying power to the whole control system; the control device comprises: a main CPU; the main CPU is used for receiving external instructions and controlling the 1# pump variable frequency inverter and the 2# pump variable frequency inverter, so that the rotational speeds of the 1# pump variable frequency motor 7 and the 2# pump variable frequency motor 8 are controlled to realize the control of the discharge capacity, and the main CPU controls the start, stop and speed regulation of the dry adding motor 5 and the dry adding motor 6 through controlling the dry adding frequency converter and the liquid adding frequency converter, so as to realize the control of the dry adding and liquid adding feeding amount.
The electronic control device further comprises: the power supply system comprises a medium-voltage switch cabinet 1, a power transformer 2, a temperature controller, a low-voltage switch cabinet 3, a generator power supply, a generator control cabinet 4, a low-voltage power distribution cabinet and a PWM rectifier; the medium-voltage switch cabinet 1 is connected with a well site power grid, and is used for receiving a medium-voltage power grid power supply and providing protection for a rear-end transformer; the power transformer 2 is used for reducing the voltage of a medium-voltage power grid to 600V required by plug pumping equipment; the temperature controller is used for detecting the online temperature of the transformer and sending out a control instruction to realize the protection of the transformer; the low-voltage switch cabinet 3 is connected with the low-voltage side of the power transformer 2 and is used for receiving the low-voltage power of the transformer after voltage reduction and providing protection for a low-voltage loop and simultaneously monitoring various parameters of a low-voltage bus on line; the PWM rectifier is connected with an alternating current bus which is output after the low-voltage switch cabinet 3 and the generator control cabinet 4 are interlocked, thereby realizing the sine of the current waveform at the network side and simultaneously realizing the feedback of redundant electric energy to the power grid by the variable frequency motor in the power generation state.
The control device further includes: the system comprises a switch, a DI/DO module, an AI/AO module, a hub deconcentrator, a DI/DO module and a remote station, wherein a main CPU is connected with the DI/DO module through a backboard data bus and receives control signals, meanwhile, the main CPU is also connected with the AI/AO module through a bus, receives handle signals from a control box and sensor signals on site, the main CPU is connected with the hub deconcentrator through a DP bus and transfers data communication with the remote station, and meanwhile, the remote control station is respectively connected with a dry adding frequency converter and a liquid adding frequency converter through the DP bus, so that speed regulation control of two motors is respectively realized, and flow control of liquid and dry material adding amount is completed. The main CPU is connected with the PWM rectifier through the line concentration deconcentrator, the PWM rectifier is respectively connected with the 1# pump variable-frequency inverter and the 2# pump variable-frequency inverter through DP communication, and the remote station is connected with the DI/DO module through the backboard bus to realize data exchange with the electric part.
The main CPU is connected with the switch through the Ethernet, is respectively connected with the local touch screen, and the handheld operation screen is connected with the wireless router through the wireless WIFI and is connected with the switch through the Ethernet; the main CPU is connected with the touch screen of the electric control room through the line concentration deconcentrator, so that three control modes of a local control box, the electric control room and the handheld movable equipment are realized.
The invention has the positive effects that:
1. the three control modes can be flexibly selected, so that the multi-flow control of operators and monitors in full coverage is greatly facilitated, and the whole system is accurately and conveniently controlled.
2. The invention can realize the full-flow automatic control operation function after only setting key parameters through the data acquisition feedback of the output clear water, liquid adding, dry adding and discharging flow and the signal acquisition and finishing operation of the liquid level of the intermediate buffer tank.
3. The whole process of the drilling plug pumping system has complete data acquisition, display and alarm functions, has the history of operation data, and is convenient for users to check.
4. Based on a good variable-frequency speed regulation control technology and a motor driving technology, the pressure approximation test pressure maintaining function under the tiny displacement is realized.
5. The high-voltage network of the oil field is connected in electrically, and a driving mode of driving the variable frequency motor through the variable frequency speed regulating system replaces a mode of a conventional diesel engine and a gearbox, so that the efficiency is improved, the benefit and the control performance are improved, and the pollution is reduced.
Drawings
FIG. 1 is a control block diagram of the present invention;
fig. 2 is a control logic diagram of the control system.
Detailed Description
Specific embodiments of the present invention are further described below with reference to the accompanying drawings.
And an electric control device: the medium-voltage switch cabinet 1 is connected with a well site power grid, the well site power grid selects a medium-voltage power grid with the voltage higher than 3.3KV, the high-voltage side of the power transformer 2 is connected with the medium-voltage power grid, the low-voltage side of the transformer reduces the voltage of the medium-voltage power grid to 600V required by the skid-mounted pump, then the medium-voltage power grid is connected with a low-voltage switch cabinet, the generator control cabinet 4 is connected with a generator set and is electrically interlocked with the low-voltage switch cabinet 3, the low-voltage loop provides protection of overload, overvoltage, short circuit and the like, and the voltage, current, power, electric energy and other parameters of a low-voltage bus are monitored on line. The PWM rectifier is connected with the alternating current bus which is output after the low-voltage switch cabinet and the generator control cabinet are interlocked, so that the sine of the network-side current waveform can be realized, the harmonic pollution of the power grid is effectively inhibited, and the motor can feed back redundant electric energy to the power grid in a power generation state. The No. 1 pump inverter and the No. 2 pump inverter are both connected with the DC bus side output by the PWM rectifier, the output AC side of the No. 1 pump variable-frequency inverter is connected with the No. 1 pump motor, and the output AC side of the No. 2 pump variable-frequency inverter is connected with the No. 2 pump motor.
And (3) a control system: the main CPU is connected with the DI/DO module through the backboard data bus, receives the switching value control signal from the control box, and outputs the electromagnetic valve control signal and the alarm display signal. And meanwhile, the main CPU is also connected with the AI/AO module in a bus way, and receives a handle signal from a control box and a sensor signal on site, wherein the handle signal comprises a weighing signal, a clear water flow signal, a discharge flow signal, a mixing tank vacuum degree signal, a middle tank liquid level signal, a lubrication pressure signal, a lubrication temperature signal and a left and right large pump pressure signal. The main CPU is connected with the switch through the Ethernet, the local touch screen is connected with the switch through the Ethernet, data exchange with the main CPU is achieved, the wireless router is connected with the switch through the Ethernet, wireless signals are issued, and data exchange between the remote handheld device and the main CPU is achieved. The main CPU is connected with the line concentration line distributor through a Profibus-dp bus and is transferred to realize data communication with the remote control station, the main CPU is connected with the line concentration line distributor through the Profibus-dp bus and is transferred to realize data communication with the touch screen of the electric control room, and meanwhile, the remote control station is respectively connected with the dry adding frequency converter and the liquid adding frequency converter through the Profibus-dp bus to respectively realize speed regulation control of the two motors, so that flow control of liquid and dry material adding quantity is completed. The main CPU realizes the Profibus-dp bus communication with the No. 1 big pump frequency converter and the No. 2 big pump frequency converter through the line concentration deconcentrator, and realizes the control of the displacement of the No. 1/2 big pump through the speed regulation of the two big pump frequency conversion motors. The remote control station is connected with the DI/DO module through the backboard bus to realize data exchange with the electric part, and the signals comprise emergency stop, maintenance, fans, oil pumps, wind pressure, operation and the like.
The system is provided with three control modes, namely local control, remote control of an electric control room and control of handheld movable equipment, and three control modes can be respectively set for each control mode: the automatic control mode, the manual control mode and the test mode are divided into four control flows according to the equipment flow: the method comprises a dry adding control flow, a liquid adding control flow, a No. 1/2 big pump control flow, an automatic control flow and a pressure test control flow. The automatic control flow interface is provided with dry adding proportion input, liquid adding proportion input and given displacement input, and is provided with starting and stopping buttons of each variable-frequency speed regulating system. The pressure test flow interface has pressure test pressure setting, pressure test time setting and pressure maintaining time display, has a one-key starting pressure test function, and has real-time pressure display.
The following describes the control flow of the present invention with reference to fig. 1-2, and the remote control of the electric control room and the control of the hand-held movable device only differ in the instruction input mode, because the limited operation of the local control box is taken as an example, and the specific control principle and control process are consistent.
Dry addition control: the control command signal is set on the operation panel of the local control box and is transmitted to the DI/DO module, and is input into the main CPU through the backboard bus, the local touch screen is effectively controlled, the dry adding proportion is set through the touch screen parameter setting interface, the weighing sensor inputs weight data into the main CPU through the AI/AO module, and the weight data is compared and then is judged whether the next operation is allowed or not. The clear water flow sensor inputs clear water flow data into a main CPU through an AI/AO module, the main CPU obtains the required dry adding flow through program calculation, the main CPU transmits a motor starting command and a speed main set value to a dry adding frequency converter in an electric control device through Profibus-dp bus communication, the starting enabling and stopping of the dry adding frequency converter are controlled, and the dry adding motor 5 is regulated through regulation of a power module in the dry adding frequency converter so as to drive a dry adding pump to operate. The main CPU calculates the weighing sensor signal acquired by the AI/AO module, compares the weighing sensor signal with the theoretical flow, sets the dead zone range, and realizes accurate addition control of dry addition through closed loop control.
Liquid adding control: the liquid adding proportion is set through the touch screen parameter setting interface, the clear water flow sensor inputs clear water flow data into the main CPU through the AI/AO module, and the main CPU obtains the required liquid adding flow through program calculation, and then the required liquid adding flow is converted into a motor rotating speed set value. The main CPU sends a motor start command and a speed main set value to the liquid adding frequency converter in the electric control device through Profibus-dp bus communication, controls the start enabling and stopping of the liquid adding frequency converter, and adjusts the liquid adding motor 6 through adjusting a power module in the liquid adding frequency converter so as to drive the dry liquid adding pump to operate. The main CPU calculates the liquid adding flow sensor signal acquired by the AI/AO module, compares the liquid adding flow sensor signal with the theoretical flow, sets the dead zone range, and realizes accurate adding control on liquid adding through closed loop control.
Big pump control: selecting a touch screen manual control interface, pressing a priming pump start button, inputting a start signal into a main CPU through an Ethernet, judging by a program, transmitting a start command to a remote station through Profibus-dp bus communication by the main CPU, and transmitting the start command to an electric control loop in an electric control device by the remote station through a DI/DO module to finish priming pump start. Meanwhile, the main CPU collects the operation command of the perfusion pump of the remote station through Profibus-dp bus communication. And pressing a No. 1 large pump starting button and a No. 2 large pump starting button, inputting a large pump starting signal into a main CPU through an Ethernet, judging by a program (comparing with wind pressure, scram, overhaul and overpressure collected in an electric control device), transmitting a fan and a lubricating oil pump starting command to a remote station through Profibus-dp bus communication by the main CPU, and outputting the command to each electric loop in the electric control device through a DI/DO module by the remote station to finish the fan and the lubricating oil pump starting. The output displacement is set through the touch screen, displacement data are transmitted to the main CPU through the Ethernet, through program calculation, the main CPU transmits a large pump starting command and a main given value to a PWM rectifier, a 1# pump variable-frequency inverter and a 2# pump variable-frequency inverter in the electric control device through Profibus-dp bus communication, and starting and speed regulation of a large pump motor are achieved. Meanwhile, the pump pressure sensors 1 and 2 monitor pressure signals in real time, and the signals are input into a main CPU (Central processing Unit) through an AI/AO module for comparison in a program, so that an overpressure protection function is realized. The main CPU calculates the signals of the large pump displacement sensor acquired by the AI/AO module, compares the signals with the theoretical flow, sets the dead zone range, and realizes the accurate control of the displacement through closed-loop control.
Automatic control: selecting an automatic control interface of the touch screen, setting output displacement, dry adding proportion and liquid adding proportion, and transmitting data to a main CPU (central processing unit) through an Ethernet. The main CPU collects the data of clear water flow, liquid adding flow, dry adding flow, removing flow, liquid level height and mixed vacuum degree collected by the AI/AO module, calculates in the program, and calculates the result by the main CPU according to each parameter. The clear water proportional valve is respectively regulated through the AI/AO module, the dry adding, the liquid adding, the main loop action and the speed regulation of the 1# or 2# pump variable frequency inverter and the PWM rectifier in the electric control device are respectively controlled through Profibus-dp bus communication, and the 1# pump variable frequency motor 7 and the 2# pump variable frequency motor 8 are controlled, so that the comprehensive automatic control of the liquid level, the output displacement and the input flow of the comprehensive intermediate buffer tank is realized.
Pressure test control: selecting a touch screen test interface, setting test pressure, transmitting data to a main CPU through an Ethernet, calculating by a program, clicking a test start button, transmitting a clear water electromagnetic valve proportion signal to be opened by the main CPU through an AI/AO module, and transmitting a start command and a speed main set value to a No. 1 or No. 2 big pump frequency converter in a point control device to operate through Profibus-dp bus communication. The pump pressure signal of No. 1 or No. 2 is input into the main CPU through the AI/AO module, and the setting program continuously adjusts the set value of the variable frequency inverter of No. 1 or No. 2 pump in the electric control device to approach the test pressure through Profibus-dp bus communication after continuous comparison with the set test pressure, and maintains the pressure for a prescribed time.
Claims (1)
1. The utility model provides a be applied to control system that drilling plug pump annotates which characterized in that: the control system includes: the electronic control device and controlling means, wherein the electronic control device includes: the system comprises a well site power grid, a No. 1 pump variable frequency inverter, a No. 2 pump variable frequency inverter, a dry adding frequency converter and a liquid adding frequency converter; the well site power grid is used for supplying power to the whole control system; the control device comprises: a main CPU; the main CPU is used for receiving external instructions and controlling the 1# pump variable frequency inverter and the 2# pump variable frequency inverter so as to control the rotation speeds of the 1# pump variable frequency motor and the 2# pump variable frequency motor to realize the control of displacement, and the main CPU controls the start, stop and speed regulation of the dry adding motor and the liquid adding motor by controlling the dry adding frequency converter and the liquid adding frequency converter so as to realize the control of the dry adding and liquid adding feeding amount;
the electronic control device further comprises: the system comprises a medium-voltage switch cabinet, a power transformer, a temperature controller, a low-voltage switch cabinet, a generator power supply, a generator control cabinet, a low-voltage power distribution cabinet and a PWM rectifier; the medium-voltage switch cabinet is connected with the well site power grid, and is used for receiving a medium-voltage power grid power supply and providing protection for the rear-end transformer; the power transformer is used for reducing the voltage of the medium-voltage power grid to 600V required by the drilling plug pumping equipment; the temperature controller is used for detecting the online temperature of the transformer and sending out a control instruction to realize the protection of the transformer; the low-voltage switch cabinet is connected with the low-voltage side of the power transformer and is used for receiving the low-voltage power of the transformer after the voltage is reduced, providing protection for a low-voltage loop and simultaneously monitoring various parameters of a low-voltage bus on line; the PWM rectifier is connected with an alternating current bus which is output after the low-voltage switch cabinet and the generator control cabinet are interlocked, so that the sine of a network side current waveform is realized, and meanwhile, the feedback of redundant electric energy to a power grid by the variable frequency motor in a power generation state is realized;
the control device further includes: the system comprises a switch, a first DI/DO module, an AI/AO module, a hub deconcentrator, a second DI/DO module and a remote station, wherein a main CPU is connected with the first DI/DO module through a backboard data bus and receives control signals, and meanwhile, the main CPU is also connected with the AI/AO module through a bus and receives handle signals from a control box and sensor signals on site, wherein the handle signals and the sensor signals comprise weighing signals, clear water flow signals, discharge flow signals, mixing tank vacuum degree signals, intermediate tank liquid level signals, lubrication pressure signals, lubrication temperature signals and left and right large pump pressure signals; the main CPU is connected with the line concentration deconcentrator through a DP bus and transits to realize data communication with a remote station, meanwhile, the remote control station is respectively connected with the dry adding frequency converter and the liquid adding frequency converter through the DP bus to respectively realize speed regulation control of two motors, so that flow control of liquid and dry material adding quantity is completed, the main CPU is connected with the PWM rectifier through the line concentration deconcentrator, the PWM rectifier is respectively connected with the 1# pump variable-frequency inverter and the 2# pump variable-frequency inverter through the DP communication, and the remote station is connected with the second DI/DO module through the backboard bus to realize data exchange with an electric part;
the main CPU is connected with the switch through the Ethernet, is also connected with the local touch screen, and the handheld operation screen is connected with the wireless router through the wireless WIFI and is connected with the switch through the Ethernet; the main CPU is connected with the touch screen of the electric control room through the line concentration deconcentrator, so that three control modes of a local control box, the electric control room and the handheld movable equipment are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276243.2A CN109213052B (en) | 2018-10-30 | 2018-10-30 | Control system applied to drilling plug pumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276243.2A CN109213052B (en) | 2018-10-30 | 2018-10-30 | Control system applied to drilling plug pumping |
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| Publication Number | Publication Date |
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| CN109213052A CN109213052A (en) | 2019-01-15 |
| CN109213052B true CN109213052B (en) | 2023-10-27 |
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| CN201811276243.2A Active CN109213052B (en) | 2018-10-30 | 2018-10-30 | Control system applied to drilling plug pumping |
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| 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 |
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- 2018-10-30 CN CN201811276243.2A patent/CN109213052B/en active Active
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| CN109213052A (en) | 2019-01-15 |
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