Multi-oil-nozzle intelligent switching and self-adaptive adjusting control system and method

Abstract

The invention is suitable for the technical field of oil and gas intelligent equipment, and provides a multi-oil-nozzle intelligent switching and self-adaptive adjusting control system which comprises a pressure control remote monitoring system, a self-adaptive dynamic control board, a multi-channel power driving board, a choke manifold executing mechanism set and the like. The system integrates the self-adaptive control function and the multi-oil-nozzle intelligent switching function, and remote / local automatic control can be conducted on wellhead pressure / flow, the opening degree of a power oil nozzle, the size of a fixed oil nozzle and the like. The oil nozzles are driven to be switched and adjusted through the electric executing mechanism, the system can be automatically matched with the specifications of the fixed oil nozzles adapting to manifold pressure, and rapid and accurate throttling pressure control is achieved. Meanwhile, the system also has the capability of monitoring and displaying key parameters in the construction process in real time, and can perform adaptive control according to a predetermined program. The problems that in a traditional system, manual oil nozzle replacement is low in efficiency, a hydraulic control device is insufficient in precision, the specification of the oil nozzle cannot be automatically matched, and the operation risk is high in the high-pressure environment can be effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of intelligent oil and gas equipment technology, and particularly relates to a multi-nozzle intelligent switching and adaptive adjustment control system. Background Technology

[0002] In oil and gas well control operations, pressure regulation in choke manifolds relies on the choking effect of fixed nozzles and the auxiliary adjustment of powered nozzles. Traditionally, fixed nozzles are equipped with only a single specification. When well conditions change (such as gas intrusion or formation pressure fluctuations), upstream and downstream valves must be manually closed, pressure released, and the nozzle replaced. This process is time-consuming and risky. For example, in high-pressure gas well operations, manual nozzle replacement can lead to uncontrolled back pressure at the wellhead, causing a blowout. While existing technologies attempt to improve nozzle switching efficiency, such as the fixed choke valve with switchable nozzles proposed in patent ZL202321649684.9, the switching process still relies on mechanical positioning, and the powered nozzle requires manual synchronous adjustment of its opening to compensate for pressure drop changes, resulting in adjustment lag. The bottomhole pressure fluctuation may exceed the safety threshold.

[0003] Another drawback of current pressure control systems lies in the separation of signal acquisition and control modules. Traditional solutions employ discrete sensors and controllers; for example, the lack of a real-time data loop between the pressure sensor and the electric actuator leads to insufficient adjustment accuracy of the power nozzle. Patent ZL202222300350.2 achieves remote control of the power nozzle, but it does not solve the problem of dynamic coordination among multiple nozzles and lacks an integrated adaptive algorithm, making it unable to dynamically match nozzle specifications based on real-time flow (such as flow sensor data) and pressure (such as pressure sensor feedback).

[0004] Meanwhile, the existing throttling manifold control system has the following problems:

[0005] (1) Traditional systems rely on manual operation when replacing fixed oil nozzles, which is inefficient;

[0006] (2) The hydraulic control device has insufficient precision when controlling the power nozzle, resulting in long well control pressure response time and low control accuracy, which can easily lead to throttling well control failure and increase the difficulty of handling complex working conditions.

[0007] (3) Traditional systems cannot automatically adjust the power nozzles, nor can they automatically match the corresponding fixed nozzles;

[0008] (4) At the same time, there is a high safety risk in close-range manual control under high pressure.

[0009] To address the aforementioned issues, a novel throttling manifold control system is urgently needed. This system requires data interaction between a remote control platform and an adaptive dynamic control board to achieve real-time closed-loop adjustment of the power nozzle opening and the fixed nozzle specifications. Key technologies must include: an adaptive algorithm based on valve position signals and pressure / flow feedback to eliminate manual adjustment lag; an electric drive mechanism for switchable fixed nozzles to ensure switching accuracy; and a collaborative design of a multi-channel power drive board and signal isolation module to ensure control stability under high-pressure environments. Such a system should significantly reduce well control risks, improve operational efficiency under complex conditions, and promote the intelligent upgrading of oil and gas extraction. Summary of the Invention

[0010] The purpose of this invention is to address the problems existing in the prior art by providing a multi-nozzle intelligent switching and adaptive adjustment control system and method that can achieve rapid response, precise pressure control, and reduced safety risks.

[0011] To achieve the above objectives, the present invention adopts the following design scheme:

[0012] A multi-nozzle intelligent switching and adaptive adjustment control system includes a pressure control remote monitoring system, an adaptive dynamic control board, a multi-channel power drive board, a throttling manifold actuator group, and a sensor signal acquisition terminal;

[0013] The pressure control remote monitoring system includes a human-machine interface, a remote control platform, and a multi-protocol redundant communication module. The human-machine interface is connected to the remote control platform by line. The remote control platform communicates bidirectionally with the multi-protocol redundant communication module, and the multi-protocol redundant communication module communicates bidirectionally with the adaptive dynamic control board.

[0014] The adaptive dynamic control board includes a fuzzy PID valve position dynamic gain adjustment module, a control parameter receiving and feedback module, a control system control chip, a high-precision dynamic AD conversion module I, and a bidirectional magneto-electric isolation signal output module I. The priority queue control parameter receiving module establishes data interaction with the pressure control remote monitoring system through a multi-protocol redundant communication module. The high-precision dynamic AD conversion module I acquires signals from the sensor signal acquisition terminal. The fuzzy PID valve position dynamic gain adjustment module stores and processes the information in the high-precision dynamic AD conversion module I. The control system control chip is used to process all signals received by the adaptive dynamic control board and is connected to the bidirectional magneto-electric isolation signal output module I.

[0015] The multi-channel power driver board includes a bidirectional magneto-electric isolation signal output module II, a multi-level power drive module, voltage and current sensors, a multi-channel power driver board control chip, and a high-precision dynamic AD conversion module II. The bidirectional magneto-electric isolation signal output module II is connected to the bidirectional magneto-electric isolation signal output module I. The current sensor is connected to the high-precision dynamic AD conversion module II and the multi-level power drive module. The multi-channel power driver board control chip is connected to the bidirectional magneto-electric isolation signal output module II, the multi-level power drive module, and the high-precision dynamic AD conversion module II.

[0016] The throttling manifold actuator group includes electric actuator I, electric actuator II, switchable fixed nozzle, and power nozzle. Electric actuator I and electric actuator II are connected to the multi-stage power drive module via circuitry.

[0017] The sensor signal acquisition terminal includes a flow sensor and a pressure sensor, and establishes a signal transmission channel with the sensor signal acquisition terminal through the high-precision dynamic AD conversion module I.

[0018] According to the intelligent switching and adaptive adjustment control system and method for multiple nozzles as described in the claim, the human-machine interface displays the flow rate, pressure parameters and actuator status of the throttling manifold in real time, and the multi-protocol redundant communication module realizes bidirectional information transmission between the remote control platform and the adaptive dynamic control board.

[0019] Preferably, the priority queue control parameter receiving module is used to receive and process control commands issued by the multi-protocol redundant communication module or the adaptive dynamic control board. The high-precision dynamic AD conversion module I collects the analog signal of the sensor signal acquisition terminal in real time and performs analog-to-digital conversion. The fuzzy PID valve position dynamic gain adjustment module has a built-in PID algorithm to dynamically analyze the digital signal converted by the high-precision dynamic AD conversion module I. The generated control commands are processed by the control system control chip and then transmitted to the multi-channel power drive board through the bidirectional magneto-electric isolation signal output module I.

[0020] Preferably, the bidirectional magneto-electric isolation signal output module II receives the control signal transmitted by the adaptive dynamic control board, the multi-channel power drive board control chip receives and processes the signal transmitted by the bidirectional magneto-electric isolation signal output module II and sends it to the multi-level power drive module, the multi-level power drive module is connected to the throttling manifold actuator group, the voltage and current sensors monitor the output parameters of the multi-level power drive module in real time, and the collected analog signal is converted by the high-precision dynamic AD conversion module II and fed back to the multi-channel power drive board control chip for feedback adjustment. The control chip performs closed-loop adjustment according to a preset threshold.

[0021] Preferably, the electric actuator I and the electric actuator II are controlled by a multi-stage power drive module. The electric actuator I controls the power nozzle through a linear displacement drive method, and the electric actuator II uses a rotary stepper motor to drive a multi-station switching mechanism for a switchable fixed nozzle.

[0022] Preferably, the switchable fixed nozzle has fixed nozzles of different specifications arranged in a circumferential array, and the electric actuator II controls the switchable fixed nozzle to replace the fixed nozzles of different specifications.

[0023] Preferably, the sensor signal acquisition terminal collects the flow and pressure parameters of the throttling manifold in the throttling manifold actuator group and sends them to the adaptive dynamic control board.

[0024] This invention also provides a control method, employing the above-mentioned intelligent switching and adaptive adjustment control system for multiple nozzles, I. Switchable fixed nozzle specification replacement, including the following steps:

[0025] S. Check whether the currently fixed nozzles meet the process requirements.

[0026] By using instruments such as flow sensors and pressure sensors, monitor whether the fluid flow rate or pressure drop meets the requirements. If the fluid flow rate meets the requirements, or if the outlet pressure meets the expected value while the inlet pressure remains unchanged, it means that the working fixed nozzle meets the process requirements and does not need to be replaced. Otherwise, it needs to be replaced.

[0027] S. Switchable fixed nozzle switching specifications

[0028] By issuing control commands through the human-machine interface or the adaptive dynamic control board, the electric actuator I is driven to adjust the opening of the power nozzle until the flow rate and pressure drop parameters detected by the flow sensor and pressure sensor reach the set requirements. Then, by issuing control commands again through the human-machine interface or the adaptive dynamic control board, the electric actuator II is driven to control the switchable fixed nozzle to switch between different specifications of fixed nozzles until the flow rate through the fixed nozzle and the pressure drop before and after the fixed nozzle are consistent with the parameters of the power nozzle.

[0029] It can also adaptively complete the function of switching between switchable fixed nozzle specifications by setting programs in the remote control platform and adaptive dynamic control board.

[0030] When multiple devices issue control commands, the control commands are prioritized through the priority queue control parameter receiving module. This processing method is pre-set by the program.

[0031] Beneficial effects

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] (1) Achieve automated nozzle switching: This invention controls the replacement of switchable fixed nozzles through an electric actuator, eliminating the need for manual closure of upstream and downstream valves and pressure relief. This solves the problem of low efficiency in manual nozzle replacement in traditional systems and significantly shortens nozzle switching time.

[0034] (2) Improved pressure control accuracy: The system uses an adaptive control algorithm combined with real-time collected pressure and flow data to dynamically adjust the opening of the power nozzle and the specifications of the fixed nozzle, achieving precise pressure control. Compared with traditional hydraulic control devices, this invention can quickly respond to changes in well conditions, reduce the fluctuation range of bottom hole pressure, and avoid well control failures caused by adjustment lag.

[0035] (3) Reduce safety risks: By combining the pressure control remote monitoring system and the adaptive dynamic control board, operators can operate in the control room far away from the high pressure area, which reduces the safety risks of close-range manual control under high pressure environment. Especially in high pressure gas well operations, it effectively reduces the risk of wellhead back pressure loss.

[0036] (4) Achieve dynamic coordination of multiple nozzles: This invention solves the problem that the power nozzle and the fixed nozzle cannot automatically coordinate in the traditional system. Through data interaction between the remote control platform and the adaptive dynamic control board, the real-time closed-loop adjustment of the opening degree of the power nozzle and the specification of the fixed nozzle is realized, ensuring the stability and reliability of the pressure control process.

[0037] (5) Real-time monitoring and feedback adjustment: The system collects the flow and pressure parameters of the manifold in real time through flow and pressure sensors, and transmits the data to the adaptive dynamic control board for analysis and processing. The multi-channel power drive board performs closed-loop adjustment based on the feedback signal, further improving the pressure control accuracy and system stability. Attached Figure Description

[0038] Figure 1 This is a system principle block diagram of the present invention.

[0039] In the diagram: 1. Pressure control remote monitoring system; 11. Human-machine interface; 12. Remote control platform; 13. Multi-protocol redundant communication module; 2. Adaptive dynamic control board; 21. Fuzzy PID valve position dynamic gain adjustment module; 22. Priority queue control parameter receiving module; 23. Control system control chip; 24. High-precision dynamic AD conversion module I; 25. Bidirectional magneto-electric isolation signal output module I; 3. Multi-level power drive module; 31. Bidirectional magneto-electric isolation signal output module II; 32. Multi-level power drive module; 33. Voltage and current sensors; 34. Multi-channel power drive board control chip; 35. High-precision dynamic AD conversion module II; 4. Throttling manifold actuator group; 41. Electric actuator I; 42. Electric actuator II; 43. Switchable fixed nozzle; 44. Power nozzle; 5. Sensor signal acquisition terminal; 51. Flow sensor; 52. Pressure sensor. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] according to Figure 1 The present invention provides a technical solution: a multi-nozzle intelligent switching and adaptive adjustment control system and method, characterized in that it includes a pressure control remote monitoring system 1, an adaptive dynamic control board 2, a multi-channel power drive board 3, a throttling manifold actuator group 4, and a sensor signal acquisition terminal 5;

[0042] The pressure control remote monitoring system 1 includes a human-machine interface 11, a remote control platform 12, and a multi-protocol redundant communication module 13. The human-machine interface 11 is connected to the remote control platform 12 by line. The remote control platform 12 communicates bidirectionally with the multi-protocol redundant communication module 13, and the multi-protocol redundant communication module 13 communicates bidirectionally with the adaptive dynamic control board 2.

[0043] The remote control platform 12 is equipped with a 7-inch capacitive touch screen, supports HMI interface development, and displays manifold pressure, flow curves and equipment status in real time. It adopts SEM32F103 series microcontroller, is equipped with a real-time operating system to handle multi-task communication, and is equipped with an RS485 transceiver to send control commands to the multi-protocol redundant communication module 13.

[0044] The multi-protocol redundant communication module 13 uses the RS485 serial communication protocol to realize bidirectional communication between the adaptive dynamic control board and the remote control platform;

[0045] The adaptive dynamic control board 2 includes a fuzzy PID valve position dynamic gain adjustment module 21, a control parameter receiving and feedback module 22, a control system control chip 23, a high-precision dynamic AD conversion module I24, and a bidirectional magneto-electric isolation signal output module I25. The priority queue control parameter receiving module 22 establishes data interaction with the pressure control remote monitoring system 1 through a multi-protocol redundant communication module 13. The high-precision dynamic AD conversion module I24 acquires signals from the sensor signal acquisition terminal 5. The fuzzy PID valve position dynamic gain adjustment module 21 stores and processes the information in the high-precision dynamic AD conversion module I24. The control system control chip 23 is used to process all signals received by the adaptive dynamic control board 2 and is connected to the bidirectional magneto-electric isolation signal output module I25.

[0046] The fuzzy PID valve position dynamic gain adjustment module 21 includes a sensing unit, a signal conditioning unit, a processing unit, a storage unit, a communication unit, and an output unit. It is mainly responsible for real-time acquisition of digital signals converted by the high-precision dynamic AD conversion module I24, and through amplification, noise reduction, storage, and other processing, finally outputting the signal to the control chip 23 of the control system.

[0047] The priority queue control parameter receiving module 22 includes a sensing unit, a signal conditioning unit, a processing unit, a storage unit, a communication unit, and an output unit. It receives the control parameters from the multi-protocol redundant communication module 13, converts the raw data into digital signals, stores them after filtering and logic control, and finally outputs the signals to the control chip 23 of the control system.

[0048] The multi-channel power driver board 3 includes a bidirectional magneto-electric isolated signal output module II31, a multi-stage power drive module 32, a voltage and current sensor 33, a multi-channel power driver board control chip 34, and a high-precision dynamic AD conversion module II35. The bidirectional magneto-electric isolated signal output module II31 is connected to the bidirectional magneto-electric isolated signal output module I25. The current sensor 33 is connected to the high-precision dynamic AD conversion module II35 and the multi-stage power drive module 32. The multi-channel power driver board control chip 34 is connected to the bidirectional magneto-electric isolated signal output module II31, the multi-stage power drive module 32, and the high-precision dynamic AD conversion module II35.

[0049] The bidirectional magneto-electric isolated signal output module uses magneto-electric isolation technology to isolate interference from high voltage, surges, static electricity, etc.

[0050] The throttling manifold actuator group 4 includes an electric actuator I41, an electric actuator II42, a switchable fixed nozzle 43, and a power nozzle 44. The electric actuator I41 and electric actuator II42 are connected to the multi-stage power drive module 32 via wiring.

[0051] The sensor signal acquisition terminal 5 includes a flow sensor 51 and a pressure sensor 52. A signal transmission channel is established between the sensor signal acquisition terminal 5 and the high-precision dynamic AD conversion module I24 to form a closed-loop feedback control loop.

[0052] In this embodiment, the human-machine interface 11 displays the flow and pressure parameters of the throttling manifold and the status of the actuator in real time, and the multi-protocol redundant communication module 13 realizes bidirectional information transmission between the pressure control remote monitoring system 1 and the adaptive dynamic control board 2.

[0053] The human-machine interface uses a 7-inch TFT touchscreen and is connected to the remote control platform 12 via an SPI bus. The display interface includes real-time dynamic curves, equipment status data graphs, alarm pop-ups, pressure and flow line graphs, as well as displaying the opening of the power nozzle and the station number of the fixed nozzle. A red warning is triggered when the manifold is overpressured or the flow is abnormal.

[0054] Furthermore, the priority queue control parameter receiving module 22 receives control commands from the multi-protocol redundant communication module 13 or the adaptive dynamic control board 2, verifies and stores them, and packages the feedback signals to send to the control system control chip 23.

[0055] The high-precision dynamic AD conversion module I24 uses the ADS1256 chip to acquire the analog signal from the sensor signal acquisition terminal 5 in real time and perform analog-to-digital conversion to generate a processable digital signal.

[0056] The fuzzy PID valve position dynamic gain adjustment module 21 has a built-in PID algorithm to dynamically analyze the digital signal converted by the high-precision dynamic AD conversion module I24. The generated control command is processed by the control system control chip 23 and then transmitted to the multi-channel power drive board 3 through the bidirectional magneto-electric isolation signal output module I25.

[0057] Furthermore, the bidirectional magneto-electric isolation signal output module II31 receives the control signal transmitted by the adaptive dynamic control board 2, and the multi-channel power drive board control chip 34 receives and processes the signal transmitted by the bidirectional magneto-electric isolation signal output module II31 and sends it to the multi-level power drive module 32. The multi-level power drive module 32 is connected to the throttling manifold actuator group 4. The voltage and current sensors 33 monitor the output parameters of the multi-level power drive module 32 in real time. The collected analog signal is converted by the high-precision dynamic AD conversion module II35 and then fed back to the multi-channel power drive board control chip 34 for feedback adjustment. The control chip performs closed-loop adjustment according to the preset threshold.

[0058] Furthermore, electric actuators I41 and II42 are controlled by a multi-stage power drive module 32. Electric actuator I41 controls the power nozzle 44 through a linear displacement drive method, while electric actuator II42 uses a rotary stepper motor to drive a multi-station switching mechanism for a switchable fixed nozzle 43.

[0059] The switchable fixed nozzle 43 is equipped with fixed nozzles of different specifications arranged in a circumferential array. The electric actuator II 42 controls the switchable fixed nozzle 43 to replace the fixed nozzles of different specifications.

[0060] In this embodiment, the electric actuator I41 is equipped with a linear stepper motor, driving the lead screw with a lead of 5mm, and is compatible with the power nozzle stroke of 0-50mm. The electric actuator I42 uses a 57HBP series closed-loop stepper motor to drive the worm gear assembly of the switchable fixed nozzle 43, with a switching accuracy of ±0.5°. The switchable fixed nozzle 43 has 6 nozzle positions evenly distributed around its circumference, with hole diameters of 1 inch, 1.5 inches, 2 inches, 2.5 inches, 3 inches, and 3.5 inches, respectively. The position is located by a Hall sensor during switching.

[0061] The flow sensor 51 and pressure sensor 52 of the sensor signal acquisition terminal 5 monitor the parameters of the throttling manifold in real time, and feed them back to the adaptive dynamic control board 2 through the high-precision dynamic AD conversion module I24 to form a closed-loop control.

[0062] The system priority logic control is implemented by the adaptive dynamic control board 2: when the pressure control remote monitoring system 1 and the adaptive dynamic control board 2 issue commands at the same time, the control system control chip 23 selects the command to be executed according to the preset permissions of the priority queue control parameter receiving module 22, so as to ensure seamless switching of control rights.

[0063] This invention also provides a control method, employing the above-mentioned intelligent switching and adaptive adjustment control system for multiple nozzles, I. Replacement of switchable fixed nozzles of specification 43, including the following steps:

[0064] S1. Check whether the current fixed nozzles meet the process requirements.

[0065] The flow rate or pressure drop of the fluid is monitored by instruments such as flow sensor 51 and pressure sensor 52 to see if they meet the requirements. If the flow rate meets the requirements, or if the outlet pressure meets the expected value while the inlet pressure remains unchanged, it means that the fixed oil nozzle in operation meets the process requirements and does not need to be replaced. Otherwise, it needs to be replaced.

[0066] S2, Switchable Fixed Oil Nozzle 43 Switching Specification

[0067] By issuing control commands through the human-machine interface 11 or the adaptive dynamic control board 2, the electric actuator I41 is driven to adjust the opening of the power nozzle 44 until the flow rate and pressure drop parameters detected by the flow sensor 51 and the pressure sensor 52 reach the set requirements. Then, by issuing control commands again through the human-machine interface 11 or the adaptive dynamic control board 2, the electric actuator II42 is driven to control the switchable fixed nozzle 43 to switch between different specifications of fixed nozzles until the flow rate through the fixed nozzle and the pressure drop before and after the fixed nozzle are consistent with the parameters of the power nozzle.

[0068] The switchable fixed nozzle specification switching function can also be adaptively completed by setting a program in the remote control platform 12 and the adaptive dynamic control board 2.

[0069] When multiple devices issue control commands, the control commands are prioritized through the priority queue control parameter receiving module 22. This processing method is preset by the program.

[0070] Although the present invention has been described in conjunction with specific embodiments, it is understood that various modifications or substitutions can be made without departing from the scope of the invention. In particular, features in the various embodiments can be combined with each other as long as there is no structural conflict, and the resulting combined features still fall within the scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-nozzle intelligent switching and adaptive adjustment control system, characterized in that, It includes a pressure control remote monitoring system (1), an adaptive dynamic control board (2), a multi-channel power drive board (3), a throttling manifold actuator group (4), and a sensor signal acquisition terminal (5); The pressure control remote monitoring system (1) is used for manual remote control of the throttling manifold or for automated adjustment of the throttling manifold by programming. The adaptive dynamic control board (2) is used for manual on-site operation of the throttling manifold, real-time reading of the pressure and flow parameters of the throttling manifold, and receiving and processing control commands issued by the pressure control remote monitoring system (1). The multi-channel power drive board (3) is used to receive and process the instructions issued by the adaptive dynamic control board (2), adjust the output power, and realize the precise control of the throttling manifold electric actuator I (41) and electric actuator I (42); The throttling manifold actuator group (4) is used to control the opening of the nozzle and achieve precise control of pressure drop; The sensor signal acquisition terminal (5) is used to receive the pressure and flow parameters in the throttling manifold actuator group (4) and feed them back to the adaptive dynamic control board (2).

2. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The pressure control remote monitoring system (1) includes a human-machine interface (11), a remote control platform (12), and a multi-protocol redundant communication module (13). The human-machine interface (11) is connected to the remote control platform (12) and displays the flow rate, pressure parameters and actuator status of the throttling manifold in real time. The remote control platform (12) communicates bidirectionally with the multi-protocol redundant communication module (13), and the multi-protocol redundant communication module (13) communicates bidirectionally with the adaptive dynamic control board (2).

3. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The adaptive dynamic control board (2) includes a fuzzy PID valve position dynamic gain adjustment module (21), a control parameter receiving and feedback module (22), a control system control chip (23), a high-precision dynamic AD conversion module I (24), and a bidirectional magneto-electric isolation signal output module I (25). The priority queue control parameter receiving module (22) establishes data interaction with the pressure control remote monitoring system (1) through a multi-protocol redundant communication module (13). The high-precision dynamic AD conversion module I (24) acquires the signal from the sensor signal acquisition terminal (5). The fuzzy PID valve position dynamic gain adjustment module (21) stores and processes the information in the high-precision dynamic AD conversion module I (24). The control system control chip (23) is used to process all signals received by the adaptive dynamic control board (2) and is connected to the bidirectional magneto-electric isolation signal output module I (25).

4. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The multi-channel power drive board (3) includes a bidirectional magneto-electric isolated signal output module II (31), a multi-level power drive module (32), a voltage and current sensor (33), a multi-channel power drive board control chip (34), and a high-precision dynamic AD conversion module II (35). The bidirectional magneto-electric isolated signal output module II (31) is connected to the bidirectional magneto-electric isolated signal output module I (25). The current sensor (33) is connected to the high-precision dynamic AD conversion module II (35) and the multi-level power drive module (32). The multi-channel power drive board control chip (34) is connected to the bidirectional magneto-electric isolated signal output module II (31), the multi-level power drive module (32), and the high-precision dynamic AD conversion module II (35).

5. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The throttling manifold actuator group (4) includes an electric actuator I (41), an electric actuator II (42), a switchable fixed nozzle (43), and a power nozzle (44). The electric actuator I (41) and the electric actuator II (42) are connected to the multi-stage power drive module (32). The switchable fixed nozzle (43) is provided with fixed nozzles of different specifications arranged in a circumferential array. The electric actuator II (42) controls the switchable fixed nozzle (43) to replace the fixed nozzles of different specifications.

6. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The sensor signal acquisition terminal (5) includes a flow sensor (51) and a pressure sensor (52). A signal transmission channel is established between the sensor signal acquisition terminal (5) and the high-precision dynamic AD conversion module I (24). The sensor signal acquisition terminal (5) collects the flow and pressure parameters of the throttling manifold in the throttling manifold actuator group (4) and sends them to the adaptive dynamic control board (2).

7. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The priority queue control parameter receiving module (22) is used to receive and process the control commands issued by the multi-protocol redundant communication module (13) or the adaptive dynamic control board (2). The high-precision dynamic AD conversion module I (24) collects the analog signal of the sensor signal acquisition terminal (5) in real time and performs analog-to-digital conversion. The fuzzy PID valve position dynamic gain adjustment module (21) has a built-in PID algorithm to dynamically analyze the digital signal converted by the high-precision dynamic AD conversion module I (24). The generated control commands are processed by the control system control chip (23) and then transmitted to the multi-channel power drive board (3) through the bidirectional magneto-electric isolation signal output module I (25).

8. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The bidirectional magneto-electric isolation signal output module II (31) receives the control signal transmitted by the adaptive dynamic control board (2). The multi-channel power drive board control chip (34) receives and processes the signal transmitted by the bidirectional magneto-electric isolation signal output module II (31) and sends it to the multi-level power drive module (32). The multi-level power drive module (32) is connected to the throttling manifold actuator group (4). The voltage and current sensor (33) monitors the output parameters of the multi-level power drive module (32) in real time. The collected analog signal is converted by the high-precision dynamic AD conversion module II (35) and fed back to the multi-channel power drive board control chip (34) for feedback adjustment. The control chip performs closed-loop adjustment according to the preset threshold.

9. The intelligent switching and adaptive adjustment control system for multiple nozzles according to claim 1, characterized in that, The electric actuator I (41) and the electric actuator II (42) are controlled by a multi-stage power drive module (32). The electric actuator I (41) controls the power nozzle (44) through a linear displacement drive method. The electric actuator II (42) adopts a multi-station switching mechanism that drives a switchable fixed nozzle (43) with a rotary stepper motor.

10. A control method, characterized in that: Using the intelligent switching and adaptive adjustment control system for multiple nozzles as described in any one of claims 1-12, I. The replacement of the switchable fixed nozzle (43) includes the following steps: S1. Check whether the current fixed nozzles meet the process requirements. By using instruments such as flow sensor (51) and pressure sensor (52), monitor whether the fluid flow rate or pressure drop meets the requirements. If the fluid flow rate meets the requirements, or if the outlet pressure meets the expected value while the inlet pressure remains unchanged, it means that the working fixed nozzle meets the process requirements and does not need to be replaced. Otherwise, it needs to be replaced. S2, Switchable fixed nozzle (43) switching specifications One control method involves issuing control commands through the human-machine interface (11) or the adaptive dynamic control board (2) to drive the electric actuator I (41) to adjust the opening of the power nozzle (44) until the flow rate and pressure drop parameters detected by the flow sensor (51) and pressure sensor (52) reach the set requirements. Then, another control command is issued through the human-machine interface (11) or the adaptive dynamic control board (2) to drive the electric actuator II (42) to control the switchable fixed nozzle (43) to switch between different specifications of fixed nozzles until the flow rate through the fixed nozzle and the pressure drop before and after the fixed nozzle are consistent with the parameters of the power nozzle. It is also possible to adaptively complete the switchable fixed nozzle specification switching function by setting the program in the remote control platform (12) and the adaptive dynamic control board (2); When multiple devices issue control commands, the control commands are prioritized through the priority queue control parameter receiving module (22). This processing method is preset by the program.

Images