Pipe medium self-adapting adjustment control system and device

Abstract

The application discloses a pipeline medium adaptive adjustment control system and device, relates to the technical field of axial flow pump control, and discloses a pipeline medium adaptive adjustment control system, which comprises an axial flow pump, a pressure monitoring module, a blade angle adjustment module and a main control module, the axial flow pump is integrated with a motor, the pressure monitoring module is used for monitoring pipeline pressure to generate a pipeline pressure signal, the blade angle adjustment module is used for adjusting the blade angle of the axial flow pump, the main control module is used for receiving the pressure signal, controlling the blade angle adjustment module to adjust the blade angle according to the pressure signal, and / or adjusting the rotating speed of the motor to change the water yield and lift of the axial flow pump, so as to adjust the pipeline pressure, and thus, according to the real-time pressure condition in the pipeline, the rotating speed and the blade angle of the axial flow pump are adjusted, the rotating speed of the motor is prevented from frequently and greatly fluctuating, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This application relates to the field of axial flow pump control technology, and in particular to a control system and device based on adaptive adjustment of pipeline medium. Background Technology

[0002] Existing axial flow pumps suffer from technical drawbacks such as insufficient adjustment flexibility, large motor speed fluctuations, short service life, and high energy consumption. Specifically, existing axial flow pumps typically employ fixed blade angles or manual adjustment, making real-time adjustments difficult based on actual operating conditions. This results in low adjustment accuracy, lag in response, and an inability to effectively meet complex and variable operating requirements. Furthermore, large motor speed fluctuations can exacerbate mechanical vibrations, increase energy consumption, and cause equipment wear, further shortening service life. In addition, existing technologies often lack a coordinated mechanism between blade angle adjustment and motor speed control. This makes it difficult to achieve precise control of pipeline medium output and head while ensuring stable control system operation, thus altering the internal operating conditions of the pipeline. This is particularly problematic in scenarios requiring high flow rates and variable operating conditions, such as drainage, irrigation, and water conservancy projects. These shortcomings significantly impact the operating efficiency and reliability of axial flow pumps. Therefore, there is an urgent need for an axial flow pump technology solution that can adjust blade angles and motor speeds in real-time according to actual operating conditions, achieving coordinated control to improve adjustment flexibility, reduce energy consumption, and extend equipment life. Summary of the Invention

[0003] The main purpose of this application is to provide a pipeline medium adaptive adjustment and control system, which aims to solve the technical problems of existing axial flow pumps, such as insufficient adjustment flexibility, large motor speed fluctuations, short service life and high energy consumption.

[0004] To achieve the above objectives, this application addresses the shortcomings of existing pipeline medium-based adaptive regulation and control systems, such as insufficient adjustment flexibility, large motor speed fluctuations, short service life, and high energy consumption. The pipeline medium-based adaptive regulation and control system comprises: The control system includes an axial flow pump, a pressure monitoring module, a blade angle adjustment module, and a main control module. The axial flow pump integrates a motor. The pressure monitoring module is used to monitor pipeline pressure and generate pipeline pressure signals; A blade angle adjustment module, which is electrically connected to the axial flow pump, is used to adjust the blade angle of the axial flow pump. The main control module is electrically connected to the axial flow pump, the pressure monitoring module, and the blade angle adjustment module, respectively. It is used to receive the pressure signal and control the blade angle adjustment module to adjust the blade angle and / or adjust the speed of the motor according to the pressure signal, so as to change the water output and head of the axial flow pump, thereby regulating the pipeline pressure.

[0005] In one embodiment, the main control module is configured as follows: When the pipeline pressure is less than a preset first pressure threshold and the current blade angle is less than a preset first angle threshold, the blade angle adjustment module is controlled to increase the blade angle so that the pipeline pressure approaches the target pressure. When the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is greater than the second angle threshold, the blade angle adjustment module is controlled to reduce the blade angle so that the pipeline pressure approaches the target pressure. Wherein, the second pressure threshold is greater than the first pressure threshold, and the first angle threshold is greater than the second angle threshold.

[0006] In one embodiment, the main control module is further configured to: When the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is less than the first angle threshold, the speed of the motor inside the axial flow pump is reduced so that the pipeline pressure approaches the target pressure.

[0007] In one embodiment, the main control module is further configured to: When the pipeline pressure is less than a preset first pressure threshold and the front blade angle is greater than a preset first angle threshold, the rotational speed of the motor inside the axial flow pump is increased so that the pipeline pressure approaches the target pressure.

[0008] In one embodiment, the control system further includes a temperature monitoring module and a temperature control module; A temperature monitoring module, which is electrically connected to the main control module, is used to monitor the pipeline temperature and send the generated temperature monitoring signal to the main control module in real time, thereby generating a pipeline temperature signal to be sent to the main control module. A temperature control module, which is electrically connected to the main control module, is used to control the temperature control module to heat or cool the medium inside the pipeline according to the pipeline temperature signal.

[0009] In one embodiment, the control system further includes: A viscosity monitoring sensor is electrically connected to the main control module and is used to monitor the viscosity of the medium in the pipeline and send the generated viscosity monitoring signal to the main control module in real time.

[0010] In one embodiment, the temperature control module includes: A first temperature control unit, electrically connected to the main control module, is used to heat the pipeline when the pipeline temperature is lower than a first preset temperature threshold and the medium viscosity is higher than a first viscosity threshold, so as to make the medium viscosity approach a first target viscosity; or to cool the pipeline when the pipeline temperature is higher than a second preset temperature threshold and the medium viscosity is lower than a second preset viscosity threshold, so as to make the medium viscosity approach the first target viscosity. Wherein, the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset viscosity threshold is less than the first viscosity threshold.

[0011] In one embodiment, the control system further includes: A viscosity adjustment component, which stores a viscosity reducer, is electrically connected to the main control module. It is used to add a viscosity reducer to the medium in the pipeline when the pipeline temperature is higher than a first preset temperature threshold and the viscosity of the medium is higher than a first viscosity threshold, so as to reduce the viscosity of the medium.

[0012] In one embodiment, the temperature control module further includes: The second temperature control unit is electrically connected to the main control module. It is used to heat the pipeline when the pipeline temperature is lower than the third preset temperature threshold and the medium viscosity is lower than the third viscosity threshold, so as to make the medium viscosity approach the second target viscosity; or to cool the pipeline when the pipeline temperature is higher than the fourth preset temperature threshold and the medium viscosity is higher than the fourth preset viscosity threshold, so as to make the medium viscosity approach the second target viscosity. Wherein, the third preset temperature threshold is greater than the fourth preset temperature threshold, and the third preset viscosity threshold is less than the fourth viscosity threshold.

[0013] In addition, to achieve the above objectives, this application also proposes an apparatus for an axial flow pump control system, the apparatus comprising the pipeline medium adaptive adjustment control system as described above.

[0014] One or more technical solutions proposed in this application have at least the following technical effects: The control system includes an axial flow pump, a pressure monitoring module, a blade angle adjustment module, and a main control module. The axial flow pump integrates a motor. The pressure monitoring module monitors pipeline pressure to generate a pipeline pressure signal. The blade angle adjustment module is electrically connected to the axial flow pump and adjusts the blade angle of the axial flow pump. The main control module is electrically connected to the axial flow pump, the pressure monitoring module, and the blade angle adjustment module, respectively, to receive the pressure signal and control the blade angle adjustment module to adjust the blade angle and / or adjust the motor speed to change the pipeline pressure. In this way, the output and head of the axial flow pump can be controlled by dynamically adjusting the speed and blade angle of the axial flow pump according to the real-time pressure in the pipeline, thereby regulating the pipeline pressure, avoiding frequent and large fluctuations in motor speed, reducing motor load impact, and extending motor life. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a system block diagram provided in Embodiment 1 of the pipeline medium adaptive adjustment and control system of this application; Figure 2 This is a system block diagram provided in Embodiment 2 of the pipeline medium adaptive adjustment and control system of this application; Figure 3 This is a system block diagram provided in Embodiment 3 of the pipeline medium adaptive adjustment and control system of this application; Figure 4 This is a system block diagram provided in Embodiment 4 of the pipeline medium adaptive adjustment and control system of this application.

[0018] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0020] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Existing axial flow pumps suffer from several technical drawbacks during operation, including insufficient adjustment flexibility, large motor speed fluctuations, short service life, and high energy consumption. Specifically, existing axial flow pumps typically employ fixed blade angles or manual adjustment, making it difficult to adjust in real time according to actual operating conditions. This results in low adjustment accuracy, delayed response, and an inability to effectively meet complex and variable operating requirements. Furthermore, large motor speed fluctuations can exacerbate mechanical vibrations, increase energy consumption, and cause equipment wear, further shortening service life. In addition, existing technologies often lack a coordinated mechanism between blade angle adjustment and motor speed control, making it difficult to achieve precise control of water output and head while ensuring stable control system operation. These shortcomings significantly impact the operating efficiency and reliability of axial flow pumps, particularly in scenarios requiring high flow rates and variable operating conditions, such as drainage, irrigation, and water conservancy projects.

[0022] To address this, this application proposes a pipeline medium adaptive adjustment and control system. This system includes an axial flow pump 10, a pressure monitoring module 20, a blade angle adjustment module 30, and a main control module 40. The axial flow pump 10 integrates a motor. The pressure monitoring module 20 monitors pipeline pressure to generate a pipeline pressure signal. The blade angle adjustment module 30 is electrically connected to the axial flow pump 10 and is used to adjust the blade angle of the axial flow pump 10. The main control module 40 is electrically connected to the axial flow pump 10, the pressure monitoring module 20, and the blade angle adjustment module, respectively, to receive the pressure signal and control the blade angle adjustment module 30 to adjust the blade angle and / or adjust the motor speed, thereby changing the output flow and head of the axial flow pump and thus regulating the pipeline pressure.

[0023] For ease of understanding, the following explains some key terms in this embodiment: The axial flow pump 10 is a type of vane pump that primarily generates axial thrust through impeller rotation, causing fluid to flow axially. In this application, the axial flow pump 10 is the core equipment for fluid transportation, and its performance directly affects the pressure and flow rate within the pipeline.

[0024] The pressure monitoring module 20 is a device used to detect the fluid pressure in a pipeline in real time. This module typically includes a pressure sensor that converts the detected physical pressure signal into an electrical signal, i.e., a pipeline pressure signal, for processing by the control system.

[0025] The blade angle adjustment module 30 is a device used to change the installation angle of the blades of the axial flow pump 10. By adjusting the blade angle, the interaction between the blades and the fluid can be changed, thereby affecting the head and flow characteristics of the axial flow pump 10, and thus achieving the regulation of pipeline pressure.

[0026] The main control module 40 is the core processing unit of the entire control system. This module is responsible for receiving signals from various monitoring modules and sending control commands to the execution modules (such as the blade angle adjustment module 30 and the motor) according to the preset control strategy to achieve adaptive adjustment of the axial flow pump 10.

[0027] The electric motor is the drive device that provides power to the axial flow pump 10. By adjusting the speed of the motor, the speed of the impeller of the axial flow pump 10 can be changed, thereby directly affecting the pump's output flow rate and head, and thus regulating the pipeline pressure.

[0028] The pipeline pressure signal is an electrical or digital signal converted from the monitored pipeline pressure by the pressure monitoring module 20. This signal serves as the basis for decision-making and control by the main control module 40.

[0029] This embodiment provides a control system for a pipeline adaptive adjustable axial flow pump 10. The control system includes the axial flow pump 10, a pressure monitoring module 20, a blade angle adjustment module 30, and a main control module 40. The axial flow pump 10, as the core component for fluid transport, integrates a motor to provide power for pump operation. This motor can be an AC motor or a DC motor, and its speed can be adjusted via external commands.

[0030] The pressure monitoring module 20 is configured to monitor the fluid pressure within the pipeline in real time. This module can employ various types of pressure sensors, such as piezoresistive, capacitive, or piezoelectric sensors, which convert pipeline pressure into an electrical signal and output it as the pipeline pressure signal. For example, the pressure monitoring module 20 can be a smart pressure transmitter installed on the pipeline, capable of converting analog pressure signals into digital signals and transmitting them to the main control module 40 via a communication interface.

[0031] The blade angle adjustment module 30 is electrically connected to the axial flow pump 10 and is used to precisely adjust the angle of the blades of the axial flow pump 10. This module can consist of a servo motor, a stepper motor, or a hydraulic / pneumatic actuator, and is connected to the blades of the axial flow pump 10 through a mechanical transmission mechanism. For example, the blade angle adjustment module 30 can receive commands from the main control module 40 to drive a linkage mechanism, thereby changing the tilt angle of the blades of the axial flow pump 10.

[0032] The main control module 40 is the core of the entire control system, and it is electrically connected to the axial flow pump 10, the pressure monitoring module 20, and the blade angle adjustment module 30. The main control module 40 is configured to receive pipeline pressure signals from the pressure monitoring module 20. This main control module 40 can be a programmable logic controller (PLC), a microcontroller (MCU), or an industrial computer, and it runs control algorithms internally.

[0033] The main control module 40 executes a corresponding control strategy based on the received pipeline pressure signal. Specifically, the main control module 40 can control the blade angle adjustment module 30 to adjust the blade angle of the axial flow pump 10. For example, when the pipeline pressure deviates from the target pressure, the main control module 40 can calculate the required blade angle adjustment amount and send a command to the blade angle adjustment module 30 to adjust the blade angle to the new position.

[0034] In addition, the main control module 40 can also adjust the speed of the motor inside the axial flow pump 10. For example, the main control module 40 can send speed commands to the motor's frequency converter or driver to increase or decrease the motor speed. This speed adjustment can be performed in conjunction with blade angle adjustment or independently.

[0035] Therefore, by controlling the blade angle adjustment module 30 and / or adjusting the motor speed through the main control module 40, the operating characteristics of the axial flow pump 10 can be effectively changed, thereby achieving precise control of the pipeline pressure. For example, when it is necessary to increase the pipeline pressure, the main control module 40 can instruct the blade angle adjustment module 30 to increase the blade angle, or instruct the motor to increase the speed, or perform both simultaneously; conversely, when it is necessary to decrease the pipeline pressure, the opposite operation is performed.

[0036] This embodiment of the pipeline medium adaptive adjustment and control system integrates pressure monitoring, blade angle adjustment, and a main control module 40 to achieve coordinated control of the blade angle and motor speed of the axial flow pump 10. Therefore, the system can dynamically adjust the operating state of the axial flow pump 10 based on the real-time monitored pipeline pressure signal, effectively solving the problems of insufficient adjustment flexibility, large motor speed fluctuations, short service life, and high energy consumption of traditional axial flow pumps 10. In scenarios requiring large flow rates and variable operating conditions, such as drainage, irrigation, and water conservancy projects, this system can improve adjustment accuracy, reduce energy consumption, and extend equipment service life, thereby ensuring stable operation of the control system and achieving precise control of water output and head.

[0037] In some of the embodiments described above in this application, a main control module 40 is proposed to receive pressure signals and control the blade angle adjustment module 30 to adjust the blade angle to change the pipeline pressure. However, in its implementation, there is a lack of a specific condition judgment mechanism based on pressure threshold and angle threshold, which may lead to blind or inaccurate adjustment process, resulting in problems such as large pressure fluctuations, delayed response, increased energy consumption and aggravated equipment wear, and it cannot effectively adapt to complex working condition changes.

[0038] In this regard, this application further proposes that the main control module 40 is configured to: when the pipeline pressure is less than a preset first pressure threshold and the current blade angle is less than a preset first angle threshold, control the blade angle adjustment module 30 to increase the blade angle so that the pipeline pressure approaches the target pressure; when the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is greater than the second angle threshold, control the blade angle adjustment module 30 to decrease the blade angle so that the pipeline pressure approaches the target pressure; wherein, the second pressure threshold is greater than the first pressure threshold, and the first angle threshold is greater than the second angle threshold.

[0039] Specifically, the main control module 40 functions to execute preset control logic. This module can be configured in various ways, such as using a programmable logic controller (PLC) to implement complex control algorithms, using an embedded microcontroller (MCU) with customized firmware to perform real-time control tasks, or using a dedicated software running on an industrial control computer for management. The preset first pressure threshold and preset first angle threshold are parameters pre-set by the system to define the operating conditions when the pipeline pressure is low and the blade angle still has room for adjustment. These thresholds can be determined through experimental testing, simulation analysis, or empirical values ​​based on the pipeline system's design requirements, fluid characteristics, and desired operating efficiency, and can be stored in the non-volatile memory of the main control module 40. For example, in a farmland irrigation system, the first pressure threshold can be set as the minimum pressure required to maintain normal crop irrigation, while the first angle threshold can be set as the upper limit at which the blade angle can effectively increase the pipeline pressure. When the pipeline pressure is less than the preset first pressure threshold and the current blade angle is less than the preset first angle threshold, the main control module 40 sends a command to the blade angle adjustment module 30 to increase the blade angle. This operation can be achieved by driving a stepper motor or servo motor to rotate the blades via a linkage mechanism, or by changing the blade attitude through a hydraulic / pneumatic actuator. Increasing the blade angle can effectively increase the head and flow rate of the axial flow pump 10, thereby increasing the pipeline pressure and bringing it closer to the target pressure.

[0040] Similarly, the preset second pressure threshold and second angle threshold are also parameters pre-set by the system to define the operating conditions when the pipeline pressure is too high and the blade angle still has room for adjustment. These thresholds can also be optimized and set through system design, operating condition analysis, or actual operating data, and stored in the main control module 40. For example, in a farmland irrigation pipeline, the second pressure threshold can be set as the highest pressure that the pipeline system can safely withstand, while the second angle threshold can be set as the lower limit at which the blade angle can effectively reduce the pressure. When the pipeline pressure is greater than the preset second pressure threshold and the current blade angle is greater than the second angle threshold, the main control module 40 will instruct the blade angle adjustment module 30 to perform the operation of reducing the blade angle. This operation is similar to increasing the blade angle and is achieved by the reverse movement of the drive mechanism. Reducing the blade angle can reduce the head and flow rate of the axial flow pump 10, thereby effectively reducing the pipeline pressure and bringing it closer to the target pressure.

[0041] It is worth noting that the second pressure threshold is greater than the first pressure threshold, and the first angle threshold is greater than the second angle threshold. This setting ensures the rationality of the logical ranges for pressure and angle adjustments. For example, there is a safety margin between the pressure thresholds, avoiding frequent triggering of adjustment actions near the target pressure, thereby reducing system oscillations. The angle threshold design ensures that when the blade angle needs to be increased, the blade has not yet reached its maximum angle, and when the blade angle needs to be decreased, the blade has not yet reached its minimum angle, thus reserving sufficient space for adjustment operations and avoiding ineffective or excessive adjustments.

[0042] Through the above technical solution, the main control module 40 can intelligently and precisely adjust the blade angle of the axial flow pump 10 based on dual judgments of pipeline pressure and blade angle. When the pipeline pressure is low and there is room for the blade angle to increase, the system can promptly and proactively increase the blade angle to raise the pressure, avoiding prolonged low-pressure operation and thus ensuring the efficiency and stability of pipeline transportation. Conversely, when the pipeline pressure is high and there is room for the blade angle to decrease, the system can quickly decrease the blade angle to lower the pressure, effectively preventing potential safety hazards and equipment damage caused by pipeline overpressure operation. This threshold-based conditional judgment mechanism avoids blind or delayed adjustments in traditional control methods, significantly reducing pressure fluctuations and improving system response speed. Simultaneously, by only acting after the blade angle adjustment reaches a certain range, unnecessary adjustment frequency and amplitude are reduced, thereby reducing wear on the axial flow pump 10 motor and blade adjustment mechanism, extending equipment lifespan, and optimizing overall energy consumption. Combined with the control system of the aforementioned pipeline adaptive adjustable axial flow pump 10, this scheme enables the axial flow pump 10 to maintain the pipeline pressure within the target range more accurately under complex and variable operating conditions, thereby improving the system's adaptability and operational reliability.

[0043] In some embodiments of this application, the main control module 40 is proposed to control the pipeline pressure by adjusting the blade angle. However, when the pipeline pressure is greater than the preset second pressure threshold and the current blade angle is less than the first angle threshold, the pressure cannot be effectively reduced by adjusting the blade angle alone, which may cause the system to be unable to operate stably or increase energy consumption.

[0044] In response, this application further proposes that the main control module 40 is also configured to: reduce the speed of the motor inside the axial flow pump 10 when the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is less than a first angle threshold, so as to make the pipeline pressure approach the target pressure.

[0045] Specifically, the main control module 40 is the core processing unit of the entire control system. It is responsible for receiving pipeline pressure signals from the pressure monitoring module 20, making judgments based on preset control logic and thresholds, and then issuing control commands to the blade angle adjustment module 30 or the motor inside the axial flow pump 10. The main control module 40 can be implemented in various hardware forms. For example, it can be a high-performance microcontroller (MCU) that integrates a processor, memory, and various peripheral interfaces, enabling it to efficiently execute complex control algorithms; it can also be a programmable logic controller (PLC), which is particularly suitable for industrial automation environments and has high reliability and anti-interference capabilities; or it can be an embedded system that implements specific control functions through customized hardware and software design.

[0046] When the main control module 40 detects that the pipeline pressure is greater than a preset second pressure threshold, and the current blade angle is less than a first angle threshold, this indicates that the pressure inside the pipeline is too high, and the blade angle is already too small. Further reducing the blade angle may not effectively reduce the pressure, and may even lead to a decrease in pump operating efficiency or adverse effects. Under this specific operating condition, the main control module 40 will trigger a control strategy to reduce the motor speed inside the axial flow pump 10. Reducing the motor speed inside the axial flow pump 10 can be achieved in several ways. For example, for an AC motor, the main control module 40 can send a command to a frequency converter (VFD), which will adjust the power supply frequency and voltage to the motor, thereby reducing the motor speed; for a DC motor, the main control module 40 can control the average voltage supplied to the motor by adjusting the duty cycle of the pulse width modulation (PWM) signal, thereby reducing the motor speed. By reducing the motor speed, the output flow rate and head of the axial flow pump 10 will decrease accordingly, thereby effectively reducing the pressure inside the pipeline. This process is a dynamic adjustment process. The main control module 40 will continuously monitor the pipeline pressure and finely adjust the motor speed according to the deviation between the pressure and the target pressure until the pipeline pressure approaches and stabilizes near the target pressure.

[0047] Through the above technical solution, this application introduces motor speed regulation as a supplementary or alternative pressure control method when blade angle adjustment is limited or inefficient. This collaborative control mechanism enables the system to adjust pipeline pressure more flexibly and accurately when facing complex and changing operating conditions. When the pipeline pressure is too high and the blade angle cannot be effectively adjusted, reducing the motor speed can quickly and effectively reduce the pressure, preventing the system from being in a high-pressure state for a long time, thereby ensuring the safe and stable operation of the pipeline system. At the same time, by optimizing the motor speed, the pump can be prevented from operating under uneconomical conditions, which helps to reduce energy consumption and extend the service life of the axial flow pump 10 and related equipment. This intelligent multi-mode adjustment strategy significantly improves the adaptability and operating efficiency of the pipeline medium adaptive adjustment control system. By prioritizing the adjustment of the blade angle to change the output flow and head of the axial flow pump, frequent and large fluctuations in motor speed can be avoided, reducing motor load impact and extending motor life.

[0048] In some embodiments of this application, the main control module 40 is proposed to control the pipeline pressure by adjusting the blade angle. However, when the pipeline pressure is lower than the preset first pressure threshold and the current blade angle is greater than the preset first angle threshold, the blade angle adjustment alone cannot further increase the angle to improve the flow rate and pressure, resulting in insufficient pressure control accuracy and the system being unable to effectively respond to changes in operating conditions.

[0049] In this regard, this application further proposes that the main control module 40 is also configured to: when the pipeline pressure is less than a preset first pressure threshold and the current blade angle is greater than a preset first angle threshold, increase the speed of the motor inside the axial flow pump 10 so that the pipeline pressure approaches the target pressure.

[0050] Specifically, when the pipeline pressure is less than a preset first pressure threshold and the current blade angle is greater than a preset first angle threshold, this condition indicates that the pipeline system is in a low-pressure state, and adjusting the blade angle can no longer effectively increase the pressure. The preset first pressure threshold is the minimum pressure required for normal system operation, while the preset first angle threshold represents the upper limit or near-upper limit of blade angle adjustment; further increasing the blade angle at this point has a negligible effect on increasing pressure. This condition acts as a trigger mechanism, enabling the control system to identify situations where adjusting the blade angle alone is insufficient to meet the pressure requirements.

[0051] Through the above technical solution, when the pipeline pressure is lower than the preset first pressure threshold and the blade angle has reached or is close to its adjustment upper limit (greater than the preset first angle threshold), the main control module 40 is no longer limited to blade angle adjustment. Instead, it directly improves the overall performance of the pump by increasing the speed of the motor inside the axial flow pump 10. This collaborative control strategy effectively compensates for the limitations of single blade angle adjustment under specific operating conditions, ensuring that even when the blade angle adjustment capability is limited, the system can still increase the flow rate and head by increasing the motor speed, thereby rapidly bringing the pipeline pressure close to the target pressure. This significantly enhances the adaptability and responsiveness of the control system, avoids pressure control instability caused by the failure of a single adjustment method, and is especially suitable for scenarios requiring large flow rates and variable operating conditions, ensuring the stability and control accuracy of the pipeline pressure.

[0052] In some embodiments described above in this application, a pressure monitoring module 20, a blade angle adjustment module 30, and a main control module 40 are proposed to monitor pipeline pressure and adjust the blade angle and / or motor speed according to the pressure signal. However, in its implementation, the lack of temperature monitoring may cause the system to be unable to effectively cope with the effects of temperature changes on pipeline pressure and medium viscosity, thereby affecting control accuracy and system efficiency.

[0053] In this regard, this application further proposes that the control system also includes a temperature monitoring module 50 and a temperature control module 60. The temperature monitoring module 50 is electrically connected to the main control module 40 and is used to monitor the pipeline temperature, sending the generated temperature monitoring signal to the main control module 40 in real time to generate a pipeline temperature signal which is then sent to the main control module 40. The temperature control module 60 is electrically connected to the main control module 40 and is used to control the temperature control module 60 to heat or cool the medium inside the pipeline based on the pipeline temperature signal.

[0054] Specifically, the temperature monitoring module 50 is a device for real-time sensing and measurement of the temperature of the medium inside the pipeline. It can be implemented in various ways. For example, it can use sensors such as resistance temperature detectors (RTDs) (e.g., Pt100, Pt1000) or thermocouples (e.g., K-type, J-type), converting temperature changes into resistance or voltage signals by directly or indirectly contacting the sensor probe with the pipeline medium. Alternatively, an infrared temperature sensor can be used to measure infrared radiation from the outer wall of the pipeline or the surface of the medium in a non-contact manner, thereby calculating the medium temperature. These sensors typically integrate signal conditioning circuits to convert the raw signal into a standard electrical signal for transmission and processing. The temperature control module 60 is an actuator that heats or cools the medium inside the pipeline based on the received temperature signal. When heating is required, the temperature control module 60 can include an electric heater (e.g., a resistance wire heater, PTC heater), a steam heating coil, or a hot water circulation system, transferring heat to the pipeline medium by controlling the on / off state or power output of the corresponding heating elements. When cooling is required, the temperature control module 60 may include a cooling coil (through which cooling water or refrigerant is circulated), an air-cooled radiator, or a refrigeration unit, etc., to remove heat from the pipe medium by controlling the flow rate of the cooling medium or the operation of the refrigeration equipment. The electrical connection refers to the transmission and interaction of electrical signals or energy between different modules via wires, cables, or wireless communication. For example, a wired connection can be used, employing a shielded cable to connect the output of the temperature monitoring module 50 to the input of the main control module 40, ensuring the stability and anti-interference of signal transmission; alternatively, a wireless communication module (such as Wi-Fi, Bluetooth, LoRa, or ZigBee) can be used to wirelessly transmit temperature monitoring data to the main control module 40. Generating the pipe temperature signal refers to processing and converting the raw temperature data collected by the temperature monitoring module 50 into a standardized digital or analog signal that can be recognized and used by the main control module 40. This can be achieved by amplifying, filtering, and performing analog-to-digital conversion (ADC) on the analog signal output from the sensor through the microcontroller or signal conditioning circuit inside the temperature monitoring module 50, ultimately generating a digital temperature value, which is then sent to the main control module 40 via a communication protocol; alternatively, the temperature monitoring module 50 can directly output an analog voltage or current signal proportional to the temperature, which the main control module 40 can acquire and convert using its own ADC module. Heating or cooling the medium inside the pipeline refers to actively changing the temperature of the fluid or semi-fluid substance inside the pipeline through external energy input or output to achieve a preset temperature target. For example, during heating, the temperature control module 60 can control the opening degree of the electric heating rod or steam valve, allowing heat to be transferred directly or indirectly to the medium; during cooling, the temperature control module 60 can control the start / stop of the cooling water pump or the opening degree of the coolant valve, allowing the cooling medium to flow through the jacket outside the pipeline or the coil inside, thereby carrying away the heat from the medium.

[0055] Through the above technical solution, this application introduces a temperature monitoring module 50 and a temperature control module 60, enabling the control system to sense and actively adjust the temperature of the medium in the pipeline in real time. Given that medium temperature has a significant impact on the physical properties of fluids such as viscosity and density, and these physical properties directly affect pipeline pressure and the operating efficiency of the axial flow pump 10, precise temperature control can effectively reduce the interference of temperature fluctuations on pipeline pressure stability. Specifically, when changes in medium temperature cause deviations in its viscosity or density, pipeline pressure may fluctuate even if the blade angle and motor speed of the axial flow pump 10 remain unchanged. This application uses the temperature monitoring module 50 to acquire pipeline temperature information in real time, and the main control module 40 instructs the temperature control module 60 to heat or cool the medium based on this information, thereby maintaining the medium temperature within the target range. Based on this, when the main control module 40 adjusts the blade angle and / or motor speed to control pipeline pressure, it can obtain a more stable and predictable medium environment, significantly improving the accuracy and response speed of pressure control. Furthermore, a stable medium temperature helps reduce the energy consumption of the axial flow pump 10 motor caused by frequent and significant speed adjustments to compensate for temperature effects, and reduces wear on mechanical components, thereby extending the equipment's service life and improving the overall efficiency and reliability of the control system. Overall, this solution enables the control system of the pipeline adaptive adjustable axial flow pump 10 to more comprehensively adapt to complex and changing operating conditions, ensuring precise and efficient pressure control under different temperature conditions.

[0056] In some of the embodiments described above in this application, a temperature monitoring module 50 and a temperature control module 60 are proposed to indirectly adjust the viscosity of the medium by controlling the pipeline temperature. However, in the implementation process, relying solely on temperature parameters cannot accurately reflect the real-time changes in the viscosity of the medium, because the viscosity is affected by a variety of factors and is independent of temperature fluctuations, resulting in insufficient control accuracy and lag in response. This makes it impossible to effectively adapt to viscosity changes under complex working conditions, thereby affecting system stability and operating efficiency.

[0057] In this regard, this application further proposes that the control system also includes a viscosity monitoring sensor 70. The viscosity monitoring sensor 70 is electrically connected to the main control module 40 and is used to monitor the viscosity of the medium within the pipeline, sending the generated viscosity monitoring signal to the main control module 40 in real time. Specifically, the viscosity monitoring sensor 70 can be implemented using various technologies. For example, it can be a vibration-type viscosity sensor, determining viscosity by measuring the damping of the probe vibrating in the fluid; or a rotational viscosity sensor, determining viscosity by measuring the torque experienced by the rotating component in the fluid; or an ultrasonic viscosity sensor, inferring viscosity by analyzing the propagation characteristics of ultrasonic waves in the medium. The viscosity monitoring sensor 70 can be directly immersed in the medium within the pipeline for real-time measurement, or a small sample of the medium can be obtained through a bypass sampling system for measurement to obtain the real-time viscosity value of the medium within the pipeline. The electrical connection between the viscosity monitoring sensor 70 and the main control module 40 can be wired, for example, via an industrial bus (such as Modbus, Profibus) or analog / digital signal line (such as a 4-20mA current loop, RS485) for data transmission; or wireless, for example, via wireless communication technologies such as Wi-Fi, Bluetooth, or LoRa. The generated viscosity monitoring signal can be transmitted periodically, i.e., the sensor sends data to the main control module 40 at preset time intervals; or triggered by events, i.e., the sensor immediately sends data when the viscosity value changes significantly or exceeds a preset threshold; or continuously streamed, continuously transmitting the data stream to the main control module 40, thereby ensuring that the main control module 40 can obtain the latest viscosity data in a timely manner.

[0058] Through the above technical solution, this application achieves direct and real-time monitoring of the viscosity of the medium in the pipeline by introducing a viscosity monitoring sensor 70. This solves the inaccuracy and lag problems caused by relying solely on temperature to indirectly infer viscosity. The electrical connection between the viscosity monitoring sensor 70 and the main control module 40 ensures the instantaneous transmission of viscosity data, enabling the main control module 40 to adjust the control strategy based on the actual viscosity value rather than temperature estimation. For example, in the above control system, when the main control module 40 receives the viscosity monitoring signal, it can combine it with the pipeline temperature signal to more accurately control the temperature control module 60 to heat or cool the medium in the pipeline, so that the medium viscosity approaches the target value. This direct viscosity feedback mechanism significantly improves the system's adaptability and control accuracy to changes in medium viscosity, avoids system instability or efficiency reduction caused by inaccurate viscosity control, and thus optimizes the operating performance and reliability of the axial flow pump 10 under complex working conditions.

[0059] Based on this, the main control module 40 will execute an operation to increase the speed of the motor inside the axial flow pump 10. Increasing the motor speed is a key means to directly improve the working capacity of the axial flow pump 10. By increasing the output power of the motor, the pump's head and flow rate are increased. There are several ways to increase the motor speed. For example, the main control module 40 can send a speed control command to the frequency converter connected to the motor, precisely controlling the motor speed by adjusting the output frequency of the frequency converter, thus increasing it from its original level. Alternatively, for some motors with multi-speed switching capabilities, the main control module 40 can send a command to switch to a higher speed gear to achieve a step-by-step increase in speed. Furthermore, the motor speed can also be indirectly or directly increased by adjusting the control parameters of the motor driver, such as voltage or current.

[0060] In some embodiments of this application, the viscosity of the medium in a conventional molten salt pipeline is strongly correlated with temperature. Excessive viscosity often leads to a significant reduction in the conveying efficiency of the axial flow pump 10, and may even cause serious problems such as pipeline blockage. Conversely, excessively low viscosity can cause downstream equipment to be unable to process the output medium in a timely manner due to its high flow rate, increasing system operating pressure. This makes it difficult to adjust the system operating pressure by regulating motor speed and blade angle, and may even damage pipeline interfaces or valves due to excessive media impact force. The control system provided in this application is based on this practical need. By setting a viscosity monitoring sensor 70 to acquire the viscosity information of the medium in the pipeline in real time and feeding it back to the main control module 40, it provides a reliable basis for the main control module 40 to perform precise speed adjustment, thereby effectively solving the problem of insufficient adaptability of the traditional axial flow pump 10 when facing changes in medium viscosity. A temperature control module 60 is proposed to control the pipeline temperature to affect the viscosity of the medium. However, in its implementation, when the pipeline temperature and the medium viscosity are in a specific combination, such as when the pipeline temperature is lower than a first preset temperature threshold and the medium viscosity is higher than a first viscosity threshold, or when the pipeline temperature is higher than a second preset temperature threshold and the medium viscosity is lower than a second preset viscosity threshold, the existing temperature control strategy may not be able to accurately adjust the medium viscosity to the required first target viscosity, thereby affecting the transport efficiency of the medium in the pipeline or the subsequent processing effect.

[0061] In response, this application further proposes a temperature control module 60 including a first temperature control unit 61. The first temperature control unit 61 is electrically connected to the main control module 40 and is used to heat the pipeline when the pipeline temperature is lower than a first preset temperature threshold and the medium viscosity is higher than a first viscosity threshold, so as to make the medium viscosity approach a first target viscosity; or to cool the pipeline when the pipeline temperature is higher than a second preset temperature threshold and the medium viscosity is lower than a second preset viscosity threshold, so as to make the medium viscosity approach the first target viscosity; wherein the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset viscosity threshold is less than the first viscosity threshold.

[0062] Specifically, the first temperature control unit 61 is a dedicated subunit within the temperature control module 60, designed to achieve precise control of pipeline temperature, thereby effectively managing the viscosity of the medium. This unit can execute heating or cooling operations according to instructions from the main control module 40 to address specific temperature and viscosity conditions. For example, the first temperature control unit 61 can consist of heating devices such as electric heaters and steam jackets integrated on the pipeline, as well as cooling devices such as cooling coils and heat exchangers. These devices receive and execute instructions from the main control module 40 via a local microcontroller. Alternatively, the first temperature control unit 61 can also be an intelligent valve system that precisely regulates the medium temperature by adjusting the flow distribution of fluid between the main pipeline and the bypass heat exchanger. The first temperature control unit 61 is electrically connected to the main control module 40, ensuring that the main control module 40 can send control commands to the first temperature control unit 61, such as activating heating, starting cooling, or setting a target temperature / power, and may receive feedback on its operating status. This electrical connection can be wired via industrial communication protocols (such as Modbus, Profibus, or Ethernet / IP) to ensure the reliability of data exchange and command transmission; or it can be wireless via wireless communication protocols (such as Wi-Fi, Zigbee, or Bluetooth Low Energy) to adapt to scenarios where wiring is difficult or flexible deployment is required, supplemented by necessary security measures.

[0063] When the pipe temperature is below a first preset temperature threshold and the medium viscosity is above a first viscosity threshold, the main control module 40 determines whether the above conditions are met based on real-time data received from the temperature monitoring module 50 and the viscosity monitoring sensor 70. Once the conditions are met, the main control module 40 sends a heating command to the first temperature control unit 61, causing the first temperature control unit 61 to heat the pipe. This heating process continues until the medium viscosity approaches the preset first target viscosity. For example, the main control module 40 can use a fuzzy logic controller to continuously evaluate the temperature and viscosity inputs, and gradually increase the heating power of the first temperature control unit 61 based on the deviation from the threshold, so as to smoothly adjust the viscosity to the target value. Conversely, when the pipe temperature is above a second preset temperature threshold and the medium viscosity is below the second preset viscosity threshold, the main control module 40 also makes a judgment based on real-time monitoring data. If the conditions are met, the main control module 40 sends a cooling command to the first temperature control unit 61, causing the first temperature control unit 61 to cool the pipe. The cooling operation continues until the medium viscosity approaches the first target viscosity. For example, a PID controller can be used to calculate the required cooling amount based on the deviation between the medium viscosity and the first target viscosity, and send the corresponding control signal to the cooling component of the first temperature control unit 61.

[0064] It is worth noting that the second preset temperature threshold is set to be greater than the first preset temperature threshold, while the second preset viscosity threshold is set to be less than the first viscosity threshold. This threshold relationship aims to establish a clear control range and a certain degree of hysteresis, effectively avoiding frequent switching between heating and cooling modes when the system approaches the target state, thereby enhancing the stability and robustness of the control. These threshold parameters are typically pre-stored in the memory of the main control module 40 as the basis for control logic judgment, and can also be dynamically adjusted according to actual operating conditions or medium characteristics.

[0065] Through the above technical solution, this application can achieve precise adaptive adjustment of the viscosity of the medium in the pipeline. When the viscosity of the medium is too high due to low temperature, the system can promptly start heating to effectively reduce the viscosity, ensuring smooth medium transportation and avoiding excessive pump load or reduced flow rate. Conversely, when the viscosity of the medium is too low due to high temperature, the system can precisely start cooling to increase the viscosity, preventing process problems caused by insufficient viscosity, such as pump cavitation or affecting the efficiency of subsequent chemical reactions. In particular, by setting temperature and viscosity thresholds with certain intervals, this application effectively avoids frequent operation of the control system under critical conditions, significantly improving the operational stability of the system and extending the service life of the equipment. This refined viscosity management mechanism ensures that the medium in the pipeline is always kept within the optimal viscosity range, thereby comprehensively improving the efficiency and reliability of pipeline transportation and processing.

[0066] In some embodiments of this application, a viscosity monitoring sensor 70 is proposed to monitor the viscosity of the medium in the pipeline. However, in its implementation, when the temperature is higher than a preset threshold and the viscosity is higher than the threshold, in order to prevent the temperature difference of the medium in the pipeline from being too large, the structural stress caused by the thermal expansion and contraction of the pipe body or the axial flow pump 10 may lead to a decrease in the operating efficiency of the axial flow pump 10 and equipment damage.

[0067] In this regard, this application further proposes that the control system also includes a viscosity adjustment component 80. The viscosity adjustment component 80 stores a viscosity reducer and is electrically connected to the main control module 40. It is used to add a viscosity reducer to the medium in the pipeline when the pipeline temperature is higher than a first preset temperature threshold and the viscosity of the medium is higher than a first viscosity threshold, so as to reduce the viscosity of the medium.

[0068] Specifically, the viscosity adjustment component 80 is a device for storing and releasing viscosity reducers on demand. It can be implemented, for example, as a system comprising a storage tank and a metering pump, wherein the metering pump is controlled by the main control module 40 and can precisely inject a predetermined amount of viscosity reducer into the pipeline according to instructions; or, it can be a device integrating a storage tank and a controlled valve, adjusting the amount of viscosity reducer added by controlling the valve's opening time or opening degree. The viscosity reducer is a chemical substance that can effectively reduce the viscosity of a fluid. For example, it can be a polymer dispersant, reducing the overall viscosity by changing the interaction forces of particles in the medium; or it can be a surfactant, achieving a viscosity-reducing effect by reducing the surface tension of the medium or changing its rheological properties, such as nitrate-based surfactants used in molten salt pipeline transportation systems, whose hydrophilic and hydrophobic groups in their molecular structure can significantly improve the flow properties of molten salt. Furthermore, the selection of viscosity reducers needs to comprehensively consider the chemical properties of the medium, temperature range, and environmental requirements. For example, in food-grade pipeline systems, edible viscosity reducers that meet food safety standards, such as certain natural polysaccharides, must be selected. The addition process of the viscosity adjustment component 80 requires a closed-loop feedback with the viscosity monitoring sensor 70. The main control module 40 dynamically adjusts the addition rate and total amount of viscosity reducer based on real-time monitored viscosity data to ensure that the medium viscosity is stably controlled within the target range, avoiding changes in medium properties or cost waste due to excessive viscosity reducer. The viscosity adjustment component 80 is electrically connected to the main control module 40, ensuring that the main control module 40 can remotely and automatically control the viscosity adjustment component 80. This electrical connection can be achieved in various ways, such as using wired communication interfaces such as RS485 or CAN bus, allowing the main control module 40 to send precise control commands, which the viscosity adjustment component 80 then receives and executes; or it can be connected via wireless communication modules such as Wi-Fi or Bluetooth, enabling more flexible deployment and control. When the pipeline temperature is higher than a first preset temperature threshold and the medium viscosity is higher than a first viscosity threshold, this condition sets a precise timing for triggering the addition of viscosity reducer. The main control module 40 continuously receives data from the temperature monitoring module 50 and the viscosity monitoring sensor 70 and performs real-time comparison and judgment. When both conditions are met simultaneously, the main control module 40 will trigger the subsequent viscosity reducer addition operation, ensuring the necessity and precision of the intervention. Adding viscosity reducer to the medium in the pipeline is the specific execution action. After the main control module 40 sends an start command to the viscosity adjustment component 80, the metering pump inside the viscosity adjustment component 80 will start, injecting a preset amount of viscosity reducer into the pipeline; or, by controlling the opening of the valve, the viscosity reducer can flow into the pipeline. This aims to reduce the viscosity of the medium by altering its rheological properties through the chemical action of the viscosity reducer, causing it to exhibit a lower viscosity under the shear force required for the operation of the axial flow pump 10.

[0069] By introducing a viscosity adjustment component 80, this application provides an effective means of proactively managing excessively high media viscosity, overcoming the limitations of relying solely on monitoring. When both the pipeline temperature and the media viscosity reach a preset high threshold, the system can intelligently determine and automatically add a viscosity reducer, thereby lowering the media viscosity to a suitable range. This precise intervention mechanism effectively avoids problems such as decreased operating efficiency of the axial flow pump 10, increased energy consumption, and equipment wear caused by excessively high media viscosity. Especially when the media temperature is high, reducing viscosity can effectively prevent malfunctions caused by thermal expansion and contraction of the pipeline and axial flow pump 10 due to large operating temperature differences, further extending the service life of the equipment. Overall, this solution ensures that the axial flow pump 10 maintains efficient and stable operation under complex working conditions, improving the reliability and economy of the system.

[0070] In some of the embodiments described above in this application, a temperature control module 60 is proposed to control heating or cooling based on the pipe temperature and the viscosity of the medium. However, in its implementation, the existing temperature control unit may not be able to effectively handle the viscosity adjustment requirements when the pipe temperature is below a certain threshold and the medium viscosity is below a certain threshold, or when the pipe temperature is above a certain threshold and the medium viscosity is above a certain threshold, resulting in the medium viscosity not being able to accurately approach the target value, thereby affecting the stability and efficiency of the system under complex working conditions.

[0071] To address this, this application further proposes that the temperature control module 60 also includes a second temperature control unit 62. This second temperature control unit 62 is electrically connected to the main control module 40 and is used to heat the pipeline when the pipeline temperature is below a third preset temperature threshold and the medium viscosity is below a third viscosity threshold, so as to bring the medium viscosity closer to a second target viscosity; or to cool the pipeline when the pipeline temperature is above a fourth preset temperature threshold and the medium viscosity is above a fourth preset viscosity threshold, so as to bring the medium viscosity closer to the second target viscosity. The third preset temperature threshold is greater than the fourth preset temperature threshold, and the third preset viscosity threshold is less than the fourth viscosity threshold.

[0072] Specifically, the second temperature control unit 62 is an independent functional unit within the temperature control module 60. Its core function is to precisely regulate the temperature for specific combinations of pipeline temperature and medium viscosity. This unit can be an independent hardware circuit module integrating a temperature sensor, viscosity sensor, controller, and heating / cooling actuator, or a logic control module implemented in the main control module 40 software, which performs corresponding operations by controlling existing heating or cooling devices. Its independence ensures that it can specifically handle medium viscosity regulation needs under complex operating conditions, avoiding conflicts with other temperature control strategies. The second temperature control unit 62 is electrically connected to the main control module 40 to achieve data transmission and control command interaction between the two. This electrical connection can be implemented using various communication protocols and physical interfaces, such as data exchange via industrial Ethernet, CAN bus, RS-485 serial communication interface, or direct control via dedicated digital / analog signal lines. This connection method ensures that the main control module 40 can acquire the operating status and sensor data of the second temperature control unit 62 in real time and send precise control commands to it, thereby achieving coordinated operation of the entire control system.

[0073] When the main control module 40 receives a signal that the pipe temperature is lower than the third preset temperature threshold and the medium viscosity is lower than the third viscosity threshold, the second temperature control unit 62 will activate the heating mechanism. The methods for heating the pipe may include, but are not limited to: direct heating by wrapping an electric heating element around the outside of the pipe; or indirect heating by setting a jacket around the outside of the pipe and introducing a high-temperature fluid (such as steam or heat transfer oil) into the jacket. By increasing the pipe temperature, the physical properties of the medium can be changed, causing its viscosity to increase, thus bringing it closer to the preset second target viscosity. Conversely, when the main control module 40 receives a signal that the pipe temperature is higher than the fourth preset temperature threshold and the medium viscosity is higher than the fourth preset viscosity threshold, the second temperature control unit 62 will activate the cooling mechanism. The methods for cooling the pipe may include, but are not limited to: forced air cooling by setting heat sinks around the outside of the pipe and supplementing them with a fan; or indirect cooling by setting a jacket around the outside of the pipe and introducing a low-temperature fluid (such as cooling water or refrigerant) into the jacket. By decreasing the pipe temperature, the physical properties of the medium can be changed, causing its viscosity to decrease, thus bringing it closer to the preset second target viscosity.

[0074] These threshold relationships define the precise control logic of the second temperature control unit 62. The third preset temperature threshold is greater than the fourth preset temperature threshold, meaning that the upper temperature limit for heating operations is higher than the lower temperature limit for cooling operations, forming a reasonable temperature control range. Similarly, the third preset viscosity threshold is less than the fourth preset viscosity threshold, ensuring that the upper viscosity limit for heating operations is lower than the lower viscosity limit for cooling operations. This design avoids conflicts in control commands and frequent system oscillations, ensuring that the second temperature control unit 62 can stably and accurately execute heating or cooling operations under different operating conditions to achieve precise adjustment of the medium viscosity.

[0075] By introducing a second temperature control unit 62, this application effectively overcomes the shortcomings of existing temperature control schemes in adjusting the viscosity of specific complex media (such as ternary molten salts). Specifically, when both the pipeline temperature and the medium viscosity are at low levels, the second temperature control unit 62 heats the pipeline, causing the medium viscosity to rise and approach the preset second target viscosity, thus solving the problem of difficulty in increasing the viscosity of low-temperature, low-viscosity media. Conversely, when both the pipeline temperature and the medium viscosity are at high levels, the second temperature control unit 62 cools the pipeline, causing the medium viscosity to decrease and approach the preset second target viscosity, thus solving the problem of difficulty in reducing the viscosity of high-temperature, high-viscosity media. This targeted bidirectional adjustment mechanism, combined with the logical setting that the third preset temperature threshold is greater than the fourth preset temperature threshold and the third preset viscosity threshold is less than the fourth preset viscosity threshold, ensures the accuracy and stability of the control strategy and avoids control blind spots and misoperations. Therefore, this application significantly improves the accuracy of the pipeline adaptive adjustable axial flow pump 10 control system in controlling the medium viscosity under extreme or special operating conditions, thereby ensuring the stable operation and delivery efficiency of the axial flow pump 10 and extending the service life of the equipment.

[0076] In some of the solutions mentioned above in this application, a pipeline medium adaptive adjustment and control system is proposed to achieve real-time coordinated control of blade angle and motor speed. However, in its implementation, the control system lacks a specific physical carrier, which may lead to integration difficulties, unstable deployment or reduced reliability in practical applications, thereby affecting the overall operating efficiency.

[0077] In response, this application proposes a pipeline medium adaptive adjustment device, the device including a pipeline medium adaptive adjustment control system.

[0078] The device refers to a physical entity designed to house, protect, and provide an operating environment for the aforementioned pipeline-based adaptive adjustment and control system. As an integrated platform, it physically integrates and connects various modules of the control system (e.g., main control module 40, pressure monitoring module 20, blade angle adjustment module 30, and optional temperature monitoring module 50, temperature control module 60, viscosity monitoring sensor 70, viscosity adjustment component 80, etc.). This device can be presented as an independent control cabinet or protective enclosure, with internal space reserved for installation, power interfaces, signal interfaces, and heat dissipation structures. All electronic components and sensor interfaces of the control system can be integrated inside this enclosure or on its external interface panel, forming a plug-and-play integrated solution. This approach facilitates on-site installation and maintenance and effectively resists the effects of external environments (such as dust, moisture, and vibration), ensuring stable system operation. Furthermore, the device can also adopt a modular design, manufacturing different functional modules of the control system into standardized modules and assembling them via racks or rails. This structure allows for flexible configuration and expansion according to actual needs, facilitates fault diagnosis and component replacement, and improves system maintainability and upgrade potential. Furthermore, the device can also be a highly integrated embedded system, directly designed and installed at a specific location on the axial flow pump 10 body or piping system, minimizing external wiring and improving system compactness and response speed. The core function of the device is to provide a stable and reliable physical operating environment for the control system, ensuring the electrical connection and physical fixation between the various components of the control system, and avoiding performance degradation or failure caused by loose connections or environmental factors.

[0079] By providing a pipeline medium adaptive adjustment device, this application effectively solves the problems of integration difficulties, deployment instability, and reduced reliability caused by the lack of a physical carrier in the actual deployment of the control system. This device, as a physical entity, can systematically integrate and encapsulate the aforementioned pipeline adaptive adjustable axial flow pump 10 control system. This ensures stable connection and coordinated operation between the various components of the control system, avoiding performance fluctuations caused by environmental factors or improper installation. Specifically, the introduction of the device allows the control system to be deployed as a complete, pre-integrated unit, greatly simplifying the on-site installation process and reducing debugging difficulty. Simultaneously, the device provides the necessary physical protection and operating environment for the control system, enhancing its anti-interference capability and long-term operational reliability. Therefore, this device can ensure that the pipeline medium adaptive adjustment device continuously and accurately achieves coordinated control of the blade angle and motor speed under various operating conditions, thereby improving the operating efficiency, stability, and service life of the entire axial flow pump 10 system.

[0080] Specifically, the control system includes an axial flow pump 10, a pressure monitoring module 20, a blade angle adjustment module 30, and a main control module 40. The axial flow pump 10 integrates a motor. The pressure monitoring module 20 is used to monitor pipeline pressure and generate a pipeline pressure signal. The blade angle adjustment module 30 is electrically connected to the axial flow pump 10 and is used to adjust the blade angle of the axial flow pump 10. The main control module 40 is electrically connected to the axial flow pump 10, the pressure monitoring module 20, and the blade angle adjustment module, respectively, and is used to receive the pressure signal and control the blade angle adjustment module 30 to adjust the blade angle and / or adjust the speed of the motor to change the pipeline pressure. In this way, the speed and blade angle of the axial flow pump 10 can be dynamically adjusted according to the real-time pressure in the pipeline, achieving precise control of the pipeline pressure and ensuring that the entire pipeline system operates efficiently and safely under the set pressure conditions.

[0081] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A pipeline medium adaptive adjustment and control system, characterized in that, The control system includes an axial flow pump, a pressure monitoring module, a blade angle adjustment module, and a main control module. The axial flow pump integrates a motor. The pressure monitoring module is used to monitor pipeline pressure and generate pipeline pressure signals; A blade angle adjustment module, which is electrically connected to the axial flow pump, is used to adjust the blade angle of the axial flow pump. The main control module is electrically connected to the axial flow pump, the pressure monitoring module, and the blade angle adjustment module, respectively. It is used to receive the pressure signal and control the blade angle adjustment module to adjust the blade angle and / or adjust the speed of the motor according to the pressure signal, so as to change the water output and head of the axial flow pump, thereby regulating the pipeline pressure.

2. The pipeline medium adaptive adjustment and control system as described in claim 1, characterized in that, The main control module is configured as follows: When the pipeline pressure is less than a preset first pressure threshold and the current blade angle is less than a preset first angle threshold, the blade angle adjustment module is controlled to increase the blade angle so that the pipeline pressure approaches the target pressure. When the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is greater than the second angle threshold, the blade angle adjustment module is controlled to reduce the blade angle so that the pipeline pressure approaches the target pressure. Wherein, the second pressure threshold is greater than the first pressure threshold, and the first angle threshold is greater than the second angle threshold.

3. The pipeline medium adaptive adjustment and control system as described in claim 2, characterized in that, The main control module is also configured to: When the pipeline pressure is greater than a preset second pressure threshold and the current blade angle is less than the first angle threshold, the rotational speed of the motor inside the axial flow pump is reduced so that the pipeline pressure approaches the target pressure.

4. The pipeline medium adaptive adjustment and control system as described in claim 2, characterized in that, The main control module is also configured to: When the pipeline pressure is less than a preset first pressure threshold and the current blade angle is greater than a preset first angle threshold, the rotational speed of the motor inside the axial flow pump is increased so that the pipeline pressure approaches the target pressure.

5. The pipeline medium adaptive adjustment and control system as described in claim 1, characterized in that, The control system also includes a temperature monitoring module and a temperature control module; A temperature monitoring module, which is electrically connected to the main control module, is used to monitor the pipeline temperature and send the generated temperature monitoring signal to the main control module in real time, thereby generating a pipeline temperature signal to be sent to the main control module. A temperature control module, which is electrically connected to the main control module, is used to control the temperature control module to heat or cool the medium inside the pipeline according to the pipeline temperature signal.

6. The pipeline medium adaptive adjustment and control system as described in claim 5, characterized in that, The control system further includes: A viscosity monitoring sensor is electrically connected to the main control module and is used to monitor the viscosity of the medium in the pipeline and send the generated viscosity monitoring signal to the main control module in real time.

7. The pipeline medium adaptive adjustment and control system as described in claim 6, characterized in that, The temperature control module includes: A first temperature control unit, electrically connected to the main control module, is used to heat the pipeline when the pipeline temperature is lower than a first preset temperature threshold and the medium viscosity is higher than a first viscosity threshold, so as to make the medium viscosity approach a first target viscosity; or to cool the pipeline when the pipeline temperature is higher than a second preset temperature threshold and the medium viscosity is lower than a second preset viscosity threshold, so as to make the medium viscosity approach the first target viscosity. Wherein, the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset viscosity threshold is less than the first viscosity threshold.

8. The pipeline medium adaptive adjustment and control system as described in claim 7, characterized in that, The control system further includes: A viscosity adjustment component, which stores a viscosity reducer, is electrically connected to the main control module. It is used to add a viscosity reducer to the medium in the pipeline when the pipeline temperature is higher than a first preset temperature threshold and the viscosity of the medium is higher than a first viscosity threshold, so as to reduce the viscosity of the medium.

9. The pipeline medium adaptive adjustment and control system as described in claim 6, characterized in that, The temperature control module also includes: The second temperature control unit is electrically connected to the main control module. It is used to heat the pipeline when the pipeline temperature is lower than the third preset temperature threshold and the medium viscosity is lower than the third viscosity threshold, so as to make the medium viscosity approach the second target viscosity; or to cool the pipeline when the pipeline temperature is higher than the fourth preset temperature threshold and the medium viscosity is higher than the fourth preset viscosity threshold, so as to make the medium viscosity approach the second target viscosity. Wherein, the third preset temperature threshold is greater than the fourth preset temperature threshold, and the third preset viscosity threshold is less than the fourth viscosity threshold.

10. A pipeline medium adaptive adjustment device, characterized in that, The device includes a pipeline medium adaptive adjustment and control system as described in any one of claims 1 to 9.

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