Sediment control system and sediment control method of drip irrigation system

By introducing a silt control system with dynamic mutual feeding and collaborative control in the drip irrigation system, the problem of difficulty in removing fine silt in the prior art is solved, efficient silt treatment is achieved, cost is reduced, and the adaptability and reliability of the system are improved.

CN120029052APending Publication Date: 2025-05-23CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Patent Information

Application Number
CN202510017920.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-05-23

AI Technical Summary

Technical Problem

In the Yellow-induced drip irrigation water source project, the prior art is difficult to effectively remove fine particles of silt, resulting in blockage of the irrigator. The traditional sand sinking tank and multi-stage filtration system increase investment costs and are difficult to implement in the absence of plots.

Method used

By introducing monitoring systems, controlled systems, algorithm systems and control systems into the drip irrigation system, automatic and efficient treatment and control of water quality silt and sand can be achieved. Through dynamic mutual feeding and coordinated control, the system adjusts the operating parameters of the water intake system, flocculation and precipitation system, pressurization system, filtration system and drip irrigation system to ensure the efficiency of sediment treatment.

Benefits of technology

The sediment treatment under different water quality conditions has been achieved, the sediment treatment efficiency has been improved, the investment cost has been reduced, and various high-sand water quality conditions have been adapted to, and the adaptability and reliability of the drip irrigation system has been improved.

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Abstract

The invention provides a sediment control system and a sediment control method of a drip irrigation system. The sediment control system comprises a monitoring system, a controlled system, an algorithm system and a control system, the controlled system comprises a water taking system, a flocculating settling system, a pressurizing system, a filtering system and a drip irrigation system; the monitoring system is used for collecting state data of each system in the controlled system; the algorithm system is used for obtaining operation parameters of the controlled system according to the operation state data and determining control parameters based on the operation parameters; and the control system is used for controlling the operation state of each system in the controlled system according to the control parameters of each system. Through dynamic mutual feedback and cooperative control of all the systems of the sediment control system, automatic and efficient treatment of water source sediment is achieved so as to adapt to various high-sediment-content special water quality conditions, and the sediment treatment efficiency under various water quality conditions is effectively improved.
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Claims

1. A sediment control system for a drip irrigation system, characterized in that: include: Monitoring system, controlled system, algorithm system and control system, wherein the controlled system includes a water intake system, a flocculation sedimentation system, a pressurization system, a filtration system and a drip irrigation system; The monitoring system is used to collect the operating status data of each system in the controlled system; The algorithm system is used to obtain the operating parameters of the controlled system according to the operating status data, and determine the control parameters based on the operating parameters; The control system is used to control the operating state of each system in the controlled system according to the control parameters; Wherein, the control parameters include: the power supply frequency of each system in the controlled system; the operation parameters include the outlet pressure of the water intake pump in the water intake system, the flow rate of the water intake pump in the water intake system, the dosage of the dosing system in the flocculation sedimentation system, the stirring speed of the stirring and coagulation system in the flocculation sedimentation system, the outlet pressure of the booster pump in the pressurization system, and the flow rate of the booster pump in the pressurization system; The operating status includes: the start and stop status of each system in the controlled system and the connection status between the systems.

2. The sediment control system of the drip irrigation system according to claim 1, characterized in that: The operating status data includes: the outlet turbidity of each system and the flow rate of each system. The operating parameters of the controlled system are obtained according to the operating status data, including: Under the corresponding operating state of the controlled system, the outlet turbidity of each system is regulated by the water quality turbidity step-by-step cycle control model in the algorithm system to obtain the inlet turbidity of the drip irrigation system, wherein the outlet turbidity of each system includes: the outlet turbidity of the water intake pump in the water intake system, the outlet turbidity of the sedimentation system of the flocculation sedimentation system, and the outlet turbidity of the filtration system; The flow of each system is regulated by the flow supply and demand step-by-step balance model in the algorithm system to obtain the actual flow of the drip irrigation system. The flow of each system includes: the flow of the water intake pump in the water intake system, the flow of the booster pump in the booster system, and the flow of the filtration system; Obtain emitter blockage turbidity threshold and predicted flow rate of drip irrigation system; Constructing a cost function according to the difference between the turbidity of the drip irrigation system inlet and the emitter blockage turbidity threshold, and the difference between the actual flow of the irrigation system and the predicted flow; When it is determined according to the cost function that the cost function meets the accuracy requirement, an operating parameter of the controlled system is determined.

3. The sediment control system of the drip irrigation system according to claim 2, characterized in that: The method of obtaining the emitter blockage turbidity threshold value and predicted flow rate of the drip irrigation system comprises: Acquire the flow channel structure parameters of the emitter in the drip irrigation system, and input the flow channel structure parameters of the emitter into the emitter blockage sediment characteristic threshold-flow channel structure parameter model of the algorithm system, and fit to obtain the critical value of sediment characteristic allowed to pass through the emitter; The sediment characteristic critical value is fitted by the turbidity-sediment characteristic model of the algorithm system to obtain the emitter blockage turbidity threshold of the drip irrigation system; Acquire water pipeline parameters and emitter parameters in the drip irrigation system, wherein the water pipeline parameters include the drip irrigation belt laying spacing and the irrigation unit area, and the emitter parameters include the emitter water flow rate and the emitter spacing; Determine the number of emitters for each irrigation unit in the drip irrigation system according to the irrigation unit area, the drip irrigation belt laying spacing and the emitter spacing; The required flow rate of each irrigation unit is calculated according to the number of the emitters and the water flow rate of the emitters as the predicted flow rate of the drip irrigation system.

4. The sediment control system of the drip irrigation system according to claim 2, characterized in that: The operating status corresponding to the controlled system includes: In the first operating state, the water intake system, the flocculation sedimentation system, the pressurization system, the filtration system and the drip irrigation system are sequentially connected, and each system in the controlled system is in an open state; In the second operating state, the water intake system, the flocculation sedimentation system, the pressurization system and the drip irrigation system are connected in sequence, and the filtration system is in a stopped state; In the third operating state, the water intake system, the pressurizing system, the filtering system and the drip irrigation system are connected in sequence, and the flocculation sedimentation system is in a stopped state; In the fourth operating state, the water intake system, the pressurizing system and the drip irrigation system are connected in sequence, and the flocculation sedimentation system and the filtration system are in a stopped state.

5. The sediment control system of the drip irrigation system according to claim 4, characterized in that: In the operating state corresponding to the controlled system, the outlet turbidity of each system is regulated by the water quality turbidity step-by-step cycle control model in the algorithm system to obtain the inlet turbidity of the drip irrigation system, including: In the first operating state, the turbidity at the outlet of the sedimentation system of the flocculation sedimentation system after regulation is obtained by fitting according to the turbidity at the outlet of the water intake pump in the water intake system, the operating parameters of the flocculation sedimentation system and the comprehensive index of the structural parameters; According to the turbidity at the outlet of the sedimentation system of the regulated flocculation sedimentation system, the operating parameters of the filtration system and the comprehensive index of the structural parameters, the turbidity at the outlet of the filtration system after regulation is fitted, and the turbidity at the outlet of the filtration system after regulation is used as the turbidity at the inlet of the drip irrigation system. In the second operating state, according to the outlet turbidity of the water intake pump in the water intake system, the operating parameters of the flocculation sedimentation system and the comprehensive index of the structural parameters, the outlet turbidity of the sedimentation system of the flocculation sedimentation system after regulation is fitted, and the outlet turbidity of the sedimentation system of the flocculation sedimentation system after regulation is used as the inlet turbidity of the drip irrigation system; In the third operating state, the turbidity at the outlet of the filtration system after adjustment is obtained by fitting according to the outlet turbidity of the water intake pump in the water intake system, the operating parameters of the filtration system and the comprehensive index of the structural parameters, and the turbidity at the outlet of the filtration system after adjustment is used as the inlet turbidity of the drip irrigation system; In the fourth operating state, the turbidity at the outlet of the water intake pump in the water intake system is used as the turbidity at the inlet of the drip irrigation system; The flow rate of each system is regulated by the flow supply and demand step-by-step balance model in the algorithm system to obtain the actual flow rate of the drip irrigation system, including: The flow values ​​of the water intake pump flow in the water intake system, the pressure pump flow in the pressure system, the flow of the filtration system and the flow of the irrigation system are regulated to be consistent, and the flow value is determined as the actual flow of the drip irrigation system.

6. The sediment control system of the drip irrigation system according to claim 2, characterized in that: The method further comprises: When it is determined according to the cost function that the cost function does not meet the accuracy requirement, calling a global optimization algorithm to adjust the operating status data; The water quality turbidity step-by-step cycle control model and the flow supply and demand step-by-step balance model are called to control the adjusted operating status data.

7. The sediment control system of the drip irrigation system according to claim 1, characterized in that: The determining of the control parameter based on the operating parameter comprises: The operating parameters are input into the system control parameter-operating parameter model of the algorithm system for fitting processing to obtain the power supply frequency of each system in the controlled system, and the power supply frequency is used as the control parameter; The fitting process of the system control parameter-operation parameter model includes: According to the outlet pressure of the water intake pump in the water intake system and the flow rate of the water intake pump in the water intake system, the power supply frequency of the water intake system is obtained by fitting; According to the outlet pressure of the boosting pump in the boosting system and the flow rate of the boosting pump in the boosting system, the power supply frequency of the boosting pump is obtained by fitting; According to the dosage of the dosing system in the flocculation sedimentation system, the power supply frequency of the dosing system is obtained by fitting; According to the stirring speed of the stirring and coagulation system in the flocculation and sedimentation system, the power supply frequency of the stirring and coagulation system is obtained by fitting.

8. The sediment control system of the drip irrigation system according to claim 1, characterized in that: The operation status data include: the sediment content at the outlet of the water intake system; The algorithm system is further used to obtain the operating parameters of the controlled system according to the sediment content at the outlet of the water intake system, and determine the control parameters based on the operating parameters; The control system is also used to control the operating state of each system in the controlled system according to the control parameters.

9. The sediment control system of the drip irrigation system according to claim 8, characterized in that: The operating states include: a fifth operating state, a sixth operating state, a seventh operating state, and an eighth operating state, wherein: The sediment content at the outlet of the water intake system in the fifth operating state is greater than or equal to the sediment content at the outlet of the water intake system in the sixth operating state; The sediment content at the outlet of the water intake system in the sixth operating state is greater than or equal to the sediment content at the outlet of the water intake system in the seventh operating state; The sediment content at the outlet of the water intake system in the seventh operating state is greater than or equal to the sediment content at the outlet of the water intake system in the eighth operating state.

10. A method for controlling sediment in a drip irrigation system, characterized in that: The method comprises: Collect the operating status data of each system in the controlled system; Obtaining operating parameters of the controlled system according to the operating status data; determining a control parameter based on the operating parameter; Controlling the operating state of each system in the controlled system according to the control parameters; Wherein, the controlled system includes a water intake system, a flocculation sedimentation system, a pressurization system, a filtration system and a drip irrigation system; The control parameters include: the power supply frequency of each system in the controlled system; The operating parameters include the outlet pressure of the water intake pump in the water intake system, the flow rate of the water intake pump in the water intake system, the dosage of the dosing system in the flocculation sedimentation system, the stirring speed of the stirring and coagulation system in the flocculation sedimentation system, the outlet pressure of the booster pump in the pressurization system, and the flow rate of the booster pump in the pressurization system; The operating status includes: the start and stop status of each system in the controlled system and the connection status between the systems.