A kind of distributed self-powered valve drive device based on energy consumption control and control method thereof

Abstract

A kind of distributed self-powered valve drive device based on energy consumption control and its control method.Employing intelligent information management platform and several distributed valve drive systems connected with intelligent information management platform;The valve drive system includes self-powered source, energy consumption controller and direct current electric actuator;Intelligent information management platform is connected with self-powered source, energy consumption controller and direct current electric actuator through remote wireless communication gateway;Self-powered source controls direct current electric actuator through energy consumption controller.Self-powered source includes monocrystalline silicon power generation component, charging controller and colloid energy storage device;Monocrystalline silicon power generation component connects colloid energy storage device through charging controller, for converting solar energy into electric energy;Charging controller is connected with wireless communication gateway.The application increases the power supply duration of battery, slows down the capacity loss of battery, prolongs the life of battery.

Description

Technical Field

[0001] This invention relates to electric actuators, and more particularly to a distributed self-powered valve drive device and its control method based on energy consumption control. Background Technology

[0002] With the nationwide rollout of manual slide gate valves to electric control, the demand for electric actuators in the water conservancy industry is increasing. However, water supply networks in water conservancy projects are widely distributed, and water control facilities (valves) are scattered, resulting in unreliable power supply and high power costs.

[0003] Drainage ditches for farmland irrigation mostly use slide gate valves, which can weigh up to twelve tons. The power of the corresponding electric actuator increases with the weight. For high-power electric actuators, the instantaneous energy consumption during startup or under load is significant.

[0004] Meanwhile, due to the remote location of water conservancy projects and the dispersed locations of valve equipment, centralized intelligent control is impossible. This leads to difficulties in later maintenance, as maintenance personnel cannot arrive on-site promptly, resulting in low efficiency and high costs in fault detection and handling. Summary of the Invention

[0005] To address the above problems, this invention provides a distributed self-powered valve drive device and its control method based on energy consumption control.

[0006] The technical solution of the present invention includes an intelligent information management platform and several distributed valve drive systems connected to the intelligent information management platform;

[0007] The valve drive system includes a self-powered power supply, an energy consumption controller, and a DC electric actuator.

[0008] The intelligent information management platform is connected to the self-powered power supply, energy consumption controller, and DC electric actuator via a remote wireless communication gateway.

[0009] The self-powered power supply controls the DC electric actuator through an energy consumption controller.

[0010] The self-powered power source includes a monocrystalline silicon power generation module, a charge controller, and a colloidal energy storage device.

[0011] The monocrystalline silicon power generation module is connected to a colloidal energy storage device via a charging controller, and is used to convert solar energy into electrical energy.

[0012] The charging controller is connected to the wireless communication gateway.

[0013] The colloidal energy storage device consists of multiple lithium iron phosphate batteries.

[0014] The instantaneous energy consumption of the colloidal energy storage device is proportional to the discharge current.

[0015] The energy consumption controller includes an MCU, a MOSFET module, a voltage detection module, and a current detection module;

[0016] The MCU controls the MOS transistor module to turn off the discharge current of the colloidal energy storage device.

[0017] The voltage detection module and the current detection module are respectively connected to the MCU;

[0018] The voltage detection module is used to detect the discharge voltage of the colloidal energy storage device;

[0019] The current detection module is used to detect the discharge current of the colloidal energy storage device.

[0020] The energy consumption controller is used to calculate the power consumption and instantaneous energy consumption of the colloidal energy storage device.

[0021] The energy consumption controller has a discharge short-circuit protection function.

[0022] The wireless communication gateway is 4G and / or WIFI.

[0023] The intelligent information management platform includes a user management module, an equipment status monitoring module, and a fault alarm module;

[0024] The user management module is used for user management and hierarchical user classification based on permissions.

[0025] The equipment status monitoring module is used to monitor power consumption and valve opening in real time.

[0026] The fault alarm module is used to issue alarms for faults and push messages to mobile phones.

[0027] A control method for a distributed self-powered valve drive device based on energy consumption control includes the following steps:

[0028] 1) Receive execution instructions from mobile / PC devices;

[0029] 2) Determine the battery level of the colloidal energy storage device. If the battery level is less than 10%, stop operation; otherwise, continue operation.

[0030] 3) Determine the power supply voltage of the DC electric actuator. If the voltage is over-voltage or under-voltage, stop operation; otherwise, start operation.

[0031] 4) Determine if the DC electric actuator has reached its travel limit. If it has, stop operation; otherwise, switch to energy consumption control mode.

[0032] 5) In the energy consumption control operation zone, first determine the power supply current of the DC electric actuator. When the current is less than the maximum discharge current, the operating speed is maintained at the rated speed; otherwise, when the output current reaches the maximum output current, load judgment is performed.

[0033] 6) When the load torque is greater than the rated torque, the operating speed shall be in accordance with V. 速度 =(T / T N )*V N Perform proportional speed reduction operation, where V 速度 : Actual speed; T: Load torque; T N Rated torque; V N Rated speed;

[0034] Conversely, when the load torque is less than or equal to the rated torque, the operating speed remains at the rated speed;

[0035] 7) Stop when the trip is completed, and the current run ends.

[0036] In step 2), when the remaining power is less than 10%, the energy controller can supply power to the DC motor, but only for status display and cannot start operation. At the same time, it uploads a low power status signal to the intelligent information management platform.

[0037] In step 3):

[0038] When the voltage exceeds the rated voltage by 20%, the energy consumption controller can supply power to the DC motor, but it is limited to status display and cannot start operation. At the same time, it uploads the overvoltage status signal to the intelligent information management platform.

[0039] When the voltage exceeds the rated voltage by 30%, the energy consumption controller will actively cut off the power supply to the DC electric actuator.

[0040] The beneficial effects of this invention are: by using a self-powered (solar power generation + battery energy storage) power supply method, the power supply and control problems of valve equipment in remote areas with scattered locations can be solved.

[0041] The energy-efficient distributed self-powered valve drive device uses a DC electric actuator as the drive unit. At the same time, an energy consumption controller is added to the power supply end of the electric actuator. During startup or instantaneous operation under load, the speed is reduced to maintain output power, thereby reducing the instantaneous energy consumption of the battery, increasing the battery power supply time, slowing down battery capacity loss, and extending battery life.

[0042] The intelligent information management platform can monitor data such as battery power and valve opening, remotely control them, provide fault alarms and push information to mobile phones, thereby solving problems such as difficult on-site maintenance, long arrival time for maintenance personnel, and high maintenance costs. Attached Figure Description

[0043] Figure 1 This is a system block diagram of the present invention;

[0044] Figure 2 This is a schematic diagram of the energy consumption controller in this invention;

[0045] Figure 3 This is the control flowchart of the present invention. Detailed Implementation

[0046] The present invention is as follows Figure 1-3 As shown, a distributed self-powered valve drive device based on energy consumption control includes: a self-powered power supply, an energy consumption controller, a DC electric actuator, and an intelligent information management platform. The self-powered power supply includes a monocrystalline silicon power generation module, a charging controller, and a colloidal energy storage device (i.e., a battery); the energy consumption controller includes an MCU, a MOSFET module, a voltage detection module, and a current detection module; the DC electric actuator is an intelligent integrated electric actuator used to drive the valve; the self-powered power supply controls the energy consumption of the DC electric actuator through the energy consumption controller; the intelligent information management platform connects to the charging controller, energy consumption controller, and DC electric actuator through a remote wireless communication gateway to achieve data exchange.

[0047] In a self-powered system, monocrystalline silicon solar panels are connected to a colloidal energy storage device via a charge controller to convert solar energy into electrical energy. These panels can meet the daily power demand of the load under conditions of the lowest monthly peak sunshine hours. The system's power consumption is determined based on factors such as the load's daily power consumption, local average daily solar radiation, line loss, voltage drop, dust, angle deviation, correction factors, and equipment efficiency.

[0048] The energy consumption controller integrates voltage and current detection modules, which detect the discharge voltage and current of the colloidal energy storage device. The remaining battery capacity is estimated based on these voltage and current values. When the remaining capacity is less than 10%, the energy consumption controller can still supply power to the DC motor, but only for status display; it cannot start the device. Simultaneously, it uploads a low battery status signal to the management platform. Similarly, when the voltage exceeds the rated voltage by 20%, the energy consumption controller can also supply power to the DC motor, but only for status display; it cannot start the device. It also uploads an overvoltage status signal to the management platform. When the voltage exceeds 30%, the energy consumption controller actively cuts off the power supply to the DC motor.

[0049] The energy consumption controller calculates the instantaneous energy consumption of the colloidal energy storage device based on voltage and current values. Instantaneous energy consumption is directly proportional to the discharge current. Theoretically, when the load changes abruptly, the discharge current increases, leading to increased instantaneous energy consumption. In practice, the MCU in the energy consumption controller controls the MOSFET components to turn off, ultimately controlling the maximum discharge current of the colloidal energy storage device. Simultaneously, the DC electric actuator operates at reduced speed, ensuring that the instantaneous energy consumption of the colloidal energy storage device remains within a controllable range. Furthermore, the energy consumption controller has a discharge short-circuit protection function.

[0050] The colloidal energy storage device consists of multiple lithium iron phosphate batteries, and its capacity is determined by the load power and operating time, ensuring that the DC electric actuator can continue to operate normally for several days in the absence of light.

[0051] The intelligent information management platform enables remote centralized control of the self-powered power supply and DC electric actuators via 4G and WIFI communication. When the environment has 4G network coverage, a direct 4G network connection can be established. When the environment is located in remote areas such as deserts or forests where 4G network coverage is unavailable, a distributed wireless bridge can be used to achieve point-to-point and point-to-multipoint wireless coverage networking, with a transmission distance of over 20km.

[0052] The intelligent information management platform can centrally manage the distributed valve drive system within the platform. This platform integrates network device management, wireless operation and maintenance management, scenario-based management, cloud control, and a visual large-screen display. It enables user management, hierarchical user access based on permissions, real-time monitoring of data such as battery level and valve opening, remote device restart and upgrades, fault alarms, and mobile phone notifications.

[0053] The DC intelligent electric actuator is driven by a DC brushless motor, with a power supply voltage of DC 48V or 96V. It features excellent starting and speed regulation performance, with a range of 1~80 r / min. Compared to traditional electric actuators, this series offers higher positioning accuracy. The output is multi-turn, suitable for slide gate valves in water conservancy and farmland irrigation. When the output is partial-turn, a planetary gearbox can be configured to output a stroke of 0~90°. The torque range is 50 N·m~1800 N·m, fully meeting the actual requirements of the water conservancy industry.

[0054] A control method for a distributed self-powered valve drive device based on energy consumption control includes the following steps:

[0055] 1) Receive execution instructions from mobile / PC devices;

[0056] 2) Determine the battery level of the colloidal energy storage device. If the battery level is less than 10%, stop operation; otherwise, start operation.

[0057] 3) Determine the power supply voltage of the DC electric actuator. If the voltage is over-voltage or under-voltage, stop operation; otherwise, start operation.

[0058] 4) Determine if the DC electric actuator has reached its travel limit. If it has, stop operation; otherwise, switch to energy consumption control mode.

[0059] 5) In the energy consumption control operation zone, first determine the power supply current of the DC electric actuator. When the current is less than the maximum discharge current, the operating speed is maintained at the rated speed; otherwise, when the output current reaches the maximum output current, load judgment is performed.

[0060] 6) When the load torque is greater than the rated torque, the operating speed shall be in accordance with V. 速度 =(T / T N )*V N (where V) 速度 : Actual speed; T: Load torque; T N Rated torque; V N When the load torque is less than or equal to the rated torque, the operating speed is reduced proportionally; conversely, when the load torque is less than or equal to the rated torque, the operating speed is maintained at the rated speed.

[0061] 7) Stop when the trip is completed, and the current run ends.

[0062] This invention solves the power supply problem for valve actuators in remote, dispersed locations within the water conservancy industry. It employs a self-powered system (solar power generation + battery energy storage), eliminating the need for power cables. Furthermore, in water conservancy, especially for farmland irrigation, when high-power electric actuators are used, the energy controller reduces instantaneous energy consumption of the battery while maintaining the actuator's output, increasing battery lifespan, mitigating capacity loss, and reducing valve anxiety during prolonged operation without power. It also reduces the power consumption of the photovoltaic cells and the capacity of the colloidal energy storage device. Therefore, the distributed self-powered valve actuator based on energy consumption control has a simple structure and controllable cost. The intelligent information management platform allows for remote centralized control of valves, reducing on-site maintenance costs and improving fault response and handling efficiency. This invention is of great significance for the nationwide promotion of replacing manual slide gate valves with electric valves.

Claims

1. A distributed self-powered valve drive device based on energy consumption control, characterized in that: This includes an intelligent information management platform and several distributed valve drive systems connected to the intelligent information management platform; The valve drive system includes a self-powered power supply, an energy consumption controller, and a DC electric actuator. The intelligent information management platform is connected to the self-powered power supply, energy consumption controller, and DC electric actuator via a remote wireless communication gateway. The self-powered power supply controls the DC electric actuator through an energy consumption controller; The energy consumption controller includes an MCU, a MOSFET module, a voltage detection module, and a current detection module; The MCU controls the MOS transistor module to turn off the discharge current of the colloidal energy storage device. The voltage detection module and the current detection module are respectively connected to the MCU; The voltage detection module is used to detect the discharge voltage of the colloidal energy storage device; The current detection module is used to detect the discharge current of the colloidal energy storage device. The energy consumption controller is used to calculate the power consumption and instantaneous energy consumption of the colloidal energy storage device; By adding an energy consumption controller to the power supply end of the DC electric actuator, the output power can be reduced while maintaining output power, thus reducing the instantaneous energy consumption of the battery during startup or instantaneous operation under load.

2. The distributed self-powered valve drive device based on energy consumption control as described in claim 1, characterized in that, The self-powered power source includes a monocrystalline silicon power generation module, a charge controller, and a colloidal energy storage device. The monocrystalline silicon power generation module is connected to a colloidal energy storage device via a charging controller, and is used to convert solar energy into electrical energy. The charging controller is connected to the wireless communication gateway.

3. The distributed self-powered valve drive device based on energy consumption control as described in claim 2, characterized in that, The colloidal energy storage device consists of multiple lithium iron phosphate batteries.

4. The distributed self-powered valve drive device based on energy consumption control as described in claim 3, characterized in that, The instantaneous energy consumption of the colloidal energy storage device is proportional to the discharge current.

5. The distributed self-powered valve drive device based on energy consumption control as described in claim 1, characterized in that, The energy consumption controller has a discharge short-circuit protection function.

6. The distributed self-powered valve drive device based on energy consumption control as described in claim 1, characterized in that, The wireless communication gateway is 4G and / or WIFI.

7. The distributed self-powered valve drive device based on energy consumption control as described in claim 1, characterized in that, The intelligent information management platform includes a user management module, an equipment status monitoring module, and a fault alarm module; The user management module is used for user management and hierarchical user classification based on permissions. The equipment status monitoring module is used to monitor power consumption and valve opening in real time. The fault alarm module is used to issue alarms for faults and push messages to mobile phones.

8. A control method for a distributed self-powered valve drive device based on energy consumption control as described in any one of claims 1-7, characterized in that, Includes the following steps: 1) Receive execution instructions from mobile / PC devices; 2) Determine the battery level of the colloidal energy storage device. If the battery level is less than 10%, stop operation; otherwise, continue operation. 3) Determine the power supply voltage of the DC electric actuator. If the voltage is over-voltage or under-voltage, stop operation; otherwise, start operation. 4) Determine if the DC electric actuator has reached its travel limit. If it has, stop operation; otherwise, switch to energy consumption control mode. 5) In the energy consumption control operation zone, first determine the power supply current of the DC electric actuator. When the current is less than the maximum discharge current, the operating speed is maintained at the rated speed; otherwise, when the output current reaches the maximum output current, load judgment is performed. 6) When the load torque is greater than the rated torque, the operating speed shall be in accordance with V. 速度 =(T / T N )*V N Perform proportional speed reduction operation, where V 速度 Actual rotational speed; T: Load torque; T N Rated torque; V N Rated speed; Conversely, when the load torque is less than or equal to the rated torque, the operating speed remains at the rated speed; 7) Stop when the trip is completed, and the current run ends.

9. The control method for a distributed self-powered valve drive device based on energy consumption control according to claim 8, characterized in that, In step 2), when the remaining power is less than 10%, the energy controller can supply power to the DC motor, but only for status display and cannot start operation. At the same time, it uploads a low power status signal to the intelligent information management platform.

10. The control method for a distributed self-powered valve drive device based on energy consumption control according to claim 8, characterized in that, In step 3): When the voltage exceeds the rated voltage by 20%, the energy consumption controller can supply power to the DC motor, but it is limited to status display and cannot start operation. At the same time, it uploads the overvoltage status signal to the intelligent information management platform. When the voltage exceeds the rated voltage by 30%, the energy consumption controller will actively cut off the power supply to the DC electric actuator.

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