Siphon water taking and drip irrigation head engineering system for large trunk canal

Abstract

The invention relates to the technical field of agricultural irrigation, in particular to a large trunk canal siphon water taking drip irrigation head engineering system which is suitable for water-saving irrigation of farmland on both banks of a trunk canal in a large irrigation area and comprises a trunk canal, a siphon water taking pipeline system, a filtering head forebay, a pump front filter and a drip irrigation pressurization head. The vacuum water diversion device is arranged, and siphon automatic water supply is formed through the water level difference. Water enters the forebay through the siphon to be primarily filtered, then is secondarily filtered through the pre-pump filter, and is pressurized and conveyed to a drip irrigation system through the pipeline centrifugal pump, so that efficient irrigation is realized, a trunk canal levee does not need to be opened for water diversion, and the safety of a water conservancy project is protected; automatic and continuous water supply is achieved through the siphon principle, and energy is saved; the filtering forebay is small in occupied area, and the land utilization rate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural irrigation technology, in particular to a large-scale main canal siphon water taking and drip irrigation head engineering system, which is suitable for farmland water-saving irrigation on both sides of a large-scale main canal. BACKGROUND

[0002] The present application relates to the field of agricultural irrigation technology, in particular to a large-scale main canal siphon water taking and drip irrigation head engineering system, which is suitable for farmland water-saving irrigation on both sides of a large-scale main canal.

[0003] The Hetao Plain Yellow River Irrigation Area is the largest irrigation area in China in terms of design and application of irrigation area, located in Bayannur City in the west of Inner Mongolia Autonomous Region. The most core is the artificially constructed total main canal of Yellow River water, with a total length of 180.85 kilometers, 13 main canals, a total length of 789.245 kilometers, and irrigation of 1100 million mu of land in the Hetao Irrigation Area.

[0004] With the development of modern agriculture, water-saving irrigation technology, especially drip irrigation engineering, is gradually replacing conventional flood irrigation to save water and improve water resource utilization efficiency. The drip irrigation head usually includes water source, filtration and pressurized water supply engineering. However, the traditional drip irrigation head engineering requires excellent water source and large-area water storage engineering, and has the disadvantages of large land occupation, low land utilization rate, and excessive influence of local topography.

[0005] The Yellow River main canal is a large state-owned water conservancy project, and when it is designed and constructed, a canal gate is opened at a certain distance, and the diversion distance of each gate is several kilometers to several tens of kilometers. There are a large number of farmlands distributed on both sides of the Yellow River main canal, and there are problems such as long diversion distance and large engineering quantity in irrigation through the diversion canal. At the same time, due to safety considerations of water conservancy projects, it is not allowed to open a gate directly on the main canal embankment for water diversion, which limits the construction of farmland irrigation systems along the main canal. In addition, the traditional drip irrigation system needs to build a large-capacity water storage pond, which also has difficulties in the environment of farmland on both sides of the main canal.

[0006] Therefore, a drip irrigation head engineering system is needed that does not damage the main canal embankment, can take water from the main canal nearby, and does not occupy a large amount of farmland. SUMMARY

[0007] The purpose of the present application is to provide a large-scale main canal siphon water taking and drip irrigation head engineering system, which utilizes the siphon principle to introduce water from the Yellow River main canal into small filter pre-pools constructed on both sides of the main canal, and then pressurizes and supplies water to the drip irrigation field, thereby realizing efficient utilization of water sources and land.

[0008] The present application discloses a large-scale main canal siphon water taking and drip irrigation head engineering system, comprising: a main canal for providing an irrigation water source; A siphon water intake pipeline system, one end of which is in communication with the main trunk and extends below the water surface of the main trunk, and the other end extends outside the trunk through the trunk embankment, the siphon water intake pipeline system is provided with a vacuum water intake device at the highest point of the trunk embankment; A filter head pre-pool is arranged outside the trunk and is in communication with the other end of the siphon water intake pipeline system, for receiving the water source introduced through the siphon water intake pipeline system and performing preliminary filtration on the water source; A pre-pump filter is arranged at the water outlet end of the filter head pre-pool, for performing secondary filtration on the water flowing out of the filter head pre-pool; and A drip irrigation pressurized head includes a pipeline centrifugal pump connected to the water outlet end of the pre-pump filter, for pressurizing and delivering the filtered water to a drip irrigation system. Wherein, after the siphon effect is formed, the water level difference between the main trunk and the filter head pre-pool is utilized to automatically and continuously supply water.

[0009] As a preferred, the siphon water intake pipeline system includes: A siphon pipeline, which adopts a three-layer composite material structure with high-density polyethylene as the inner layer, reinforced steel wire mesh as the middle layer, and ultraviolet-resistant polyethylene as the outer layer; A water outlet valve is arranged at one end of the siphon pipeline close to the filter head pre-pool, for controlling water flow; A water inlet is arranged at one end of the siphon pipeline in communication with the main trunk, and the water inlet adopts a funnel-shaped structure to reduce inlet head loss; and An automatic exhaust valve is arranged at the highest point of the siphon pipeline, for exhausting accumulated gas in the pipeline.

[0010] As a preferred, the vacuum water intake device includes: A main vacuum system including a water ring vacuum pump, for quickly establishing a vacuum in the pipeline during the starting stage; A standby vacuum system including an electromagnetic reciprocating vacuum pump, for maintaining the vacuum degree in the pipeline during long-term operation; A vacuum degree sensor for real-time monitoring of the vacuum degree change in the pipeline; and An intelligent control unit electrically connected with the vacuum degree sensor, the main vacuum system, and the standby vacuum system, for automatically controlling the switching of the main vacuum system and the standby vacuum system according to the feedback data of the vacuum degree sensor.

[0011] As a preferred, the filter head pre-pool includes: A coarse filtration area is arranged at the water inlet in communication with the siphon water intake pipeline system, including a detachable stainless steel grid for intercepting large floating objects; The sedimentation zone, which is connected to the coarse filtration zone, adopts a zigzag water flow channel structure to promote sediment settling. A fine filtration zone, connected to the sedimentation zone, includes a replaceable nylon filter screen for trapping minute impurities; and The sediment discharge system includes a sludge discharge valve located at the bottom of the forepool of the filter head for periodically discharging sediment.

[0012] Preferably, the dimensions of the filter head front pool are 6 meters long × 5 meters wide × 5 meters deep, with a 45° sloping bottom. The pool wall is assembled from precast reinforced concrete components, and the inner surface is provided with a composite seepage prevention structure of bentonite geotextile and high-density polyethylene geomembrane.

[0013] Preferably, a monitoring system is also included, the monitoring system comprising: Water level sensors are installed in the main canal and the forepool of the filter head, respectively, for real-time monitoring of water level changes; A flow sensor is installed at the connection between the siphon water pipe system and the forebay of the filter head to monitor the system flow rate; A water quality sensor, installed in the forebay of the filter head, is used to monitor water quality parameters; and The data processing unit is electrically connected to the water level sensor, the flow sensor, and the water quality sensor, and is used to receive and analyze monitoring data to control the operating status of each component of the system.

[0014] Preferably, a security system is also included, which includes: A water hammer elimination device is installed in the siphon water pipe system to reduce the impact caused by sudden changes in water flow; Antifreeze protection devices, including insulation material and micro-heating wires surrounding the siphon water pipe system and key components, are used to prevent the system from freezing in low-temperature environments; and An emergency power supply, electrically connected to the vacuum water priming device, is used to maintain system operation in the event of a power outage.

[0015] Preferably, it also includes an energy optimization system, which comprises: A miniature hydroelectric power generation device is installed at the outlet end of the siphon water pipe system to generate electricity using water flow energy. Solar-powered devices, including solar panels and energy storage devices, are used to provide power to system control and monitoring equipment; and An energy management unit, electrically connected to the micro hydroelectric generator and the solar power supply unit, is used to manage and distribute electrical energy.

[0016] Preferably, the siphon water pipe system has a non-uniform pipe diameter design, with a "small-large-small" proportional structure in the order of inlet end-middle section-outlet end, and the pipe diameter of the middle section is enlarged to reduce flow resistance; the connection between the siphon water pipe system and the forepool of the filter head is provided with a floating interface, which can adapt to water level fluctuations of ±1.5 meters.

[0017] Preferably, the system operates by comprising the following steps: Close the valve at the outlet end of the siphon water pipe system; The vacuum water intake device is activated to pump water from the main canal to the highest point of the siphon water intake pipeline system; Open the valve at the outlet of the siphon water pipe system to allow water to flow into the forepool of the filter head, thus creating a siphon effect; Start the pipeline centrifugal pump of the drip irrigation pressurization head to draw water from the forepool of the filter head and pressurize it to send it into the drip irrigation system; A continuous siphon water supply is maintained by the water level difference between the main canal and the forebay of the filter head.

[0018] The beneficial effects of this invention include: 1. It eliminates the need to open openings in the main canal embankment to divert water, thus protecting the safety of the water conservancy project; 2. Utilizing the siphon principle to achieve automatic and continuous water supply, saving energy; 3. The pre-filtration tank occupies a small area, improving land utilization; 4. The system has a compact structure and is easy to install and maintain; 5. It has a strong ability to adapt to changes in water level and operates stably and reliably; 6. Low construction cost and high overall benefits. Attached Figure Description

[0019] Fig. 1 This is a schematic diagram of the overall engineering system of the headworks of the large-scale dry canal siphon drip irrigation system of the present invention; Fig. 2 This is a partial top view of the headworks system for large-scale canal siphon drip irrigation according to the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figs. 1-2 As shown, the large-scale trunk canal siphon water intake drip irrigation headworks system provided by the present invention includes a main trunk canal 1, a siphon water intake pipeline system 2, a filter headworks forebay 3, a pump pre-filter 4, and a drip irrigation pressurization headworks 5.

[0022] The main canal 1 is used to provide irrigation water. In this embodiment, the main canal 1 is approximately 80 meters wide and 5 meters deep, ensuring a sufficient water supply. Preferably, the water level in the main canal 1 is relatively stable, which facilitates maintaining the continuity of the siphon effect.

[0023] One end of the siphon water intake pipe system 2 is connected to the main canal 1 and extends below the water surface of the main canal 1, while the other end extends through the canal embankment to the outside of the canal. A vacuum water intake device 21 is installed at the highest point of the siphon water intake pipe system 2 where it crosses the canal embankment. In one embodiment of the invention, the connection depth between the siphon water intake pipe system 2 and the main canal 1 is 0.5-1.5 meters below the water surface to prevent suspended matter and surface contaminants from entering the pipe, while also avoiding excessive depth that would increase the risk of sediment ingress.

[0024] The filter head forebay 3 is located outside the main canal and connected to the other end of the siphon water pipe system 2. It is used to receive water introduced through the siphon water pipe system 2 and perform preliminary filtration on the water. In this embodiment, the dimensions of the filter head forebay 3 are 6 meters long × 5 meters wide × 5 meters deep, which is significantly smaller than the footprint of a traditional water storage tank.

[0025] The pre-pump filter 4 is installed at the outlet of the pre-pool 3 of the filter head. It is used to perform secondary filtration on the water flowing out of the pre-pool 3 of the filter head, remove fine impurities, and prevent blockage of pipes and drip irrigation systems.

[0026] The drip irrigation pressurization head 5 includes a pipeline centrifugal pump 51 connected to the outlet of the pre-pump filter 4, used to pressurize and deliver the filtered water to the drip irrigation system. The selection of the pipeline centrifugal pump 51 depends on the irrigation area and the required pressure. In this embodiment, for an irrigation area of ​​100 mu, a centrifugal pump with a rated flow rate of 50 cubic meters per hour and a head of 35 meters is selected.

[0027] The core of this system is that after the siphon effect is formed, the siphon water pipe system 2 automatically and continuously supplies water by utilizing the water level difference between the main canal 1 and the filter head forebay 3, without the need for additional energy input, thus achieving energy-saving and efficient water intake.

[0028] The structure of each part of the present invention will be described in detail below: According to one embodiment of the present invention, the siphon water pipe system 2 includes a siphon pipe 22, an outlet valve 23, an inlet 24, and an automatic air vent valve 25.

[0029] The siphon pipe 22 adopts a three-layer composite material structure with an inner layer of high-density polyethylene, a middle layer of reinforcing steel wire mesh, and an outer layer of UV-resistant polyethylene. This material combination has excellent pressure resistance (can withstand pressures above 1.0 MPa), anti-aging properties (service life exceeding 15 years), and wear resistance, making it particularly suitable for use in irrigation areas along the Yellow River with high sand content. Preferably, the inner wall of the pipe is treated with a special anti-wear coating, which can extend the service life of the pipe by more than 30%.

[0030] The outlet valve 23 is located at one end of the siphon pipe 22 near the forebay 3 of the filter head, and is used to control the water flow. In this embodiment, the outlet valve 23 is an electric butterfly valve, which can realize remote control and automated operation, with an opening and closing time of less than 30 seconds, facilitating system startup and rapid closure in emergencies.

[0031] The inlet 24 is located at the end where the siphon pipe 22 connects to the main canal 1. The inlet 24 adopts a funnel-shaped structure to reduce inlet head loss. In practical applications, the funnel-shaped inlet can reduce inlet head loss by 15-20%, improving water intake efficiency. Preferably, a stainless steel protective mesh with a mesh size of 20mm × 20mm is installed on the outside of the inlet 24 to intercept larger floating objects.

[0032] An automatic air vent valve 25 is located at the highest point of the siphon pipe 22 to remove accumulated gas in the pipe. During long-term operation of the system, dissolved gas in the water may accumulate at the highest point of the pipe, affecting the siphon effect. The automatic air vent valve 25 can automatically release the gas when it accumulates to a certain level, ensuring the continuous and stable siphon effect.

[0033] Furthermore, the siphon water pipe system 2 of the present invention employs a non-uniform pipe diameter design, exhibiting a "small-large-small" proportional structure in the order of inlet end-middle section-outlet end, with the middle section diameter enlarged to reduce flow resistance. Specifically, if the inlet and outlet pipe diameters are D, the middle section diameter is approximately 1.2D. This design reduces system flow resistance by approximately 15%, thereby improving siphon efficiency.

[0034] According to another embodiment of the present invention, the vacuum water-drawing device 21 includes a main vacuum system, a backup vacuum system, a vacuum degree sensor, and an intelligent control unit.

[0035] The main vacuum system includes a water ring vacuum pump, used to quickly establish a vacuum in the pipeline during the startup phase. The water ring vacuum pump has a power of 1.5kW and can establish a vacuum of -0.06MPa within 3-5 minutes, meeting the requirements for siphon startup.

[0036] The backup vacuum system includes an electromagnetic reciprocating vacuum pump, used to maintain the vacuum level inside the pipeline during long-term operation. The electromagnetic reciprocating vacuum pump has a relatively low power consumption (approximately 0.5 kW), making it suitable for long-term low-load operation, with low energy consumption and a long service life.

[0037] Vacuum sensors are used to monitor changes in vacuum levels inside pipelines in real time. The measurement accuracy is ±0.001MPa, and the response time is less than 1 second, enabling them to reflect the vacuum status inside pipelines in real time.

[0038] The intelligent control unit is electrically connected to the vacuum sensor, the main vacuum system, and the backup vacuum system. It is used to automatically control the switching between the main vacuum system and the backup vacuum system based on the feedback data from the vacuum sensor. When the vacuum level is detected to be lower than -0.04 MPa, the backup vacuum system is automatically activated to supplement the vacuum; when the vacuum level is lower than -0.02 MPa, the main vacuum system is activated to quickly restore the vacuum level.

[0039] According to yet another embodiment of the present invention, such as Fig. 2 As shown, the forebay 3 of the filter head includes a coarse filtration zone, a grit settling zone, a fine filtration zone, and a sediment discharge system.

[0040] The coarse filtration zone is located at the inlet connected to the siphon water pipe system 2, and includes a removable stainless steel bar to intercept large floating objects. The bar has a 10mm aperture, is made of 304 stainless steel, and needs to be cleaned 1-2 times per week. Disassembly and cleaning are simple.

[0041] The sedimentation zone is connected to the coarse filtration zone, employing a zigzag water flow channel structure to promote sediment settling. The zigzag channel creates variations in water flow velocity, forming localized low-velocity zones that facilitate sediment particle settling. Practice has shown that this structure can settle over 90% of sediment particles with a diameter greater than 0.1 mm.

[0042] The fine filtration zone is connected to the sedimentation zone and includes a replaceable nylon filter screen to trap tiny impurities. The filter screen has a mesh size of 120, a filtration accuracy of approximately 0.125mm, and a filtration efficiency greater than 95%. The filter screen is installed in a frame style, making it easy to remove for regular cleaning or replacement.

[0043] The sediment discharge system includes a sludge discharge valve located at the bottom of the forebay 3 of the filter head, used for periodically discharging sediment. The sludge discharge valve has a diameter of 150mm, is manually or electrically controlled, and is opened once every 7-10 days for a discharge time of approximately 5-10 minutes, effectively removing sediment from the bottom of the pool.

[0044] According to a preferred embodiment of the present invention, the dimensions of the pre-filter pool 3 are 6 meters long × 5 meters wide × 5 meters deep, with a 45° sloping bottom structure, which facilitates the concentration of sediment towards the sludge discharge port. The pool wall is assembled from precast reinforced concrete components, and the inner surface is provided with a composite seepage-proof structure of bentonite geotextile and high-density polyethylene geomembrane, with a permeability coefficient of less than 10. - 9 The flow rate is measured in cm / s to ensure the pool remains leak-proof. Prefabricated components are designed using standardized methods and assembled on-site, reducing the construction period by more than 50%.

[0045] The present invention also includes a monitoring system comprising a water level sensor, a flow sensor, a water quality sensor, and a data processing unit.

[0046] Water level sensors are installed in the main canal 1 and the forebay 3 of the filter head section to monitor water level changes in real time. Ultrasonic water level sensors are used, with a measurement accuracy of ±5mm and a measurement range of 0-10m, accurately reflecting water level changes.

[0047] The flow sensor is installed at the connection between the siphon water pipe system 2 and the filter head pre-pool 3 to monitor the system flow. It uses an electromagnetic flow meter with a measurement error of less than 1%, can be installed externally to the pipe without affecting the water flow, and is characterized by good durability and simple maintenance.

[0048] Water quality sensors are installed in the forebay 3 of the filter head to monitor water quality parameters. These include a turbidity sensor (measurement range 0-1000 NTU, accuracy ±2%), a pH sensor (measurement range 0-14, accuracy ±0.1%), and a conductivity sensor (measurement range 0-2000 μS / cm, accuracy ±1%), providing comprehensive monitoring of water quality.

[0049] The data processing unit is electrically connected to the water level sensor, flow sensor, and water quality sensor to receive and analyze monitoring data, controlling the operating status of each system component. The data processing unit uses an industrial-grade microcontroller with a processor frequency of at least 100MHz and memory of at least 512KB, capable of storing more than 30 days of historical data. The system supports local display and remote data transmission, enabling unattended monitoring.

[0050] To ensure the safe and stable operation of the system, this invention also includes a safety protection system, including a water hammer elimination device. The water hammer elimination device is installed in the siphon water pipeline system 2 to mitigate the impact caused by sudden changes in water flow. The water hammer eliminator adopts an airbag structure with a volume of 1 / 20 to 1 / 15 of the pipeline volume, effectively absorbing more than 90% of the water hammer impact and protecting the pipeline and equipment.

[0051] The invention also includes an energy optimization system comprising a micro hydroelectric generator and a solar power supply device.

[0052] A micro hydroelectric power generation device is installed at the outlet end of the siphon water pipe system 2 to generate electricity using the energy of water flow. It adopts an axial-flow turbine generator with a rated power of 300-500W and a power generation efficiency of up to 65%, which can provide part of the power for system control and monitoring equipment.

[0053] The solar power supply system includes solar panels and energy storage devices, used to provide power to system control and monitoring equipment. The solar panels are made of monocrystalline silicon material with a conversion efficiency greater than 20% and an area of ​​approximately 2-3 square meters; the energy storage devices use lithium iron phosphate batteries with a cycle life greater than 2000 cycles and a capacity of 100-150 Ah.

[0054] The working method of the large-scale dry canal siphon drip irrigation headworks system of the present invention includes the following steps: First, close valve 23 at the outlet of siphon water pipe system 2; Then, the vacuum water-drawing device 21 is activated to pump water from the main canal 1 to the highest point of the siphon water-drawing pipeline system 2. In this embodiment, the vacuum water-drawing process takes 3-5 minutes. When the pipeline is detected to be full of water, the next step is initiated. Next, open valve 23 at the outlet of the siphon water pipe system 2 to allow water to flow into the forebay 3 of the filter head, creating a siphon effect. Since the water level in the main canal 1 is higher than the water level in the forebay 3 of the filter head, the water will flow from higher to lower under the action of gravity, creating a continuous siphon effect; Subsequently, the centrifugal pump 51 of the drip irrigation pressurization head 5 is started to draw water from the filter head forebay 3 and pressurize it before sending it into the drip irrigation system. The pumping of water by the centrifugal pump 51 simultaneously promotes the drop in water level in the filter head forebay 3, further enhancing the siphon effect; Finally, a continuous siphon water supply is maintained through the water level difference between the main canal 1 and the forebay 3 of the filter head. During system operation, the water level of the forebay 3 of the filter head is maintained within the design height range (usually 70%-90% of the full pool level) to ensure stable system operation.

[0055] In practical applications, this system can be appropriately adjusted to meet different irrigation needs. For small systems (30-100 mu of irrigation area), DN200 siphon pipes can be used, and the volume of the pre-filtration pool can be appropriately reduced to 80-100 cubic meters; for large systems (over 500 mu), a multi-pipe parallel design or an increase in the diameter of a single pipe to DN400 or above can be adopted, while simultaneously expanding the volume of the pre-filtration pool.

[0056] The large-scale canal siphon drip irrigation headwork system of this invention achieves lossless water intake through the siphon principle, overcoming many limitations of traditional water diversion methods. It is particularly suitable for water-saving renovations in large irrigation areas such as the Yellow River irrigation area in the Hetao Plain. The system has a compact structure, small footprint, and low construction and operating costs. It also has advantages such as high energy efficiency, stable and reliable operation, and simple maintenance, which is of great significance for promoting the development of water-saving agriculture in arid and semi-arid regions of northern my country.

[0057] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. All changes and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A large-scale main canal siphon drip irrigation headworks system, characterized in that, include: The main canal is used to provide irrigation water. The siphon water intake pipeline system has one end connected to the main canal and extending below the water surface of the main canal, and the other end extending through the canal embankment to the outside of the canal. A vacuum water intake device is installed at the highest point of the siphon water intake pipeline system that crosses the canal embankment. The filter head pre-pool is located outside the main canal and connected to the other end of the siphon water pipe system. It is used to receive water introduced through the siphon water pipe system and to perform preliminary filtration on the water. A pre-pump filter, installed at the outlet end of the pre-pool of the filter head, is used for secondary filtration of the water flowing out of the pre-pool of the filter head; and The drip irrigation pressurization head includes a pipeline centrifugal pump connected to the outlet of the pre-pump filter, used to pressurize and deliver the filtered water to the drip irrigation system; The siphon water supply system automatically and continuously supplies water by utilizing the water level difference between the main canal and the forebay of the filter head after the siphon effect is formed.

2. The system according to claim 1, characterized in that, The siphon water pipe system includes: The siphon pipe adopts a three-layer composite material structure with an inner layer of high-density polyethylene, a middle layer of reinforcing steel wire mesh, and an outer layer of UV-resistant polyethylene; The outlet valve is located at one end of the siphon pipe near the front pool of the filter head, and is used to control the water flow; The inlet is located at the end where the siphon pipe connects to the main canal. The inlet adopts a funnel-shaped structure to reduce inlet head loss. An automatic vent valve is located at the highest point of the siphon pipe to remove gas accumulated in the pipe.

3. The system according to claim 1, characterized in that, The vacuum water-drawing device includes: The main vacuum system, including a water ring vacuum pump, is used to quickly establish a vacuum in the pipeline during the startup phase; A backup vacuum system, including an electromagnetic reciprocating vacuum pump, is used to maintain the vacuum level inside the pipeline during long-term operation. Vacuum sensors are used to monitor changes in vacuum levels within pipelines in real time; and The intelligent control unit is electrically connected to the vacuum sensor, the main vacuum system, and the backup vacuum system, and is used to automatically control the switching between the main vacuum system and the backup vacuum system based on the feedback data from the vacuum sensor.

4. The system according to claim 1, characterized in that, The filter head pre-pool includes: The coarse filtration zone, located at the inlet connected to the siphon water pipe system, includes a detachable stainless steel bar for intercepting large floating objects. The sedimentation zone, which is connected to the coarse filtration zone, adopts a zigzag water flow channel structure to promote sediment settling. A fine filtration zone, connected to the sedimentation zone, includes a replaceable nylon filter screen for trapping minute impurities; and The sediment discharge system includes a sludge discharge valve located at the bottom of the forepool of the filter head for periodically discharging sediment.

5. The system according to claim 1, characterized in that, The dimensions of the filter head front pool are 6 meters long × 5 meters wide × 5 meters deep, with a 45° sloping bottom. The pool wall is assembled from precast reinforced concrete components, and the inner surface is equipped with a composite seepage prevention structure of bentonite geotextile and high-density polyethylene geomembrane.

6. The system according to claim 1, characterized in that, It also includes a monitoring system, which comprises: Water level sensors are installed in the main canal and the forepool of the filter head, respectively, for real-time monitoring of water level changes; A flow sensor is installed at the connection between the siphon water pipe system and the forebay of the filter head to monitor the system flow rate; A water quality sensor, installed in the forebay of the filter head, is used to monitor water quality parameters; and The data processing unit is electrically connected to the water level sensor, the flow sensor, and the water quality sensor, and is used to receive and analyze monitoring data to control the operating status of each component of the system.

7. The system according to claim 1, characterized in that, It also includes a security system, which includes: A water hammer elimination device is installed in the siphon water pipe system to reduce the impact caused by sudden changes in water flow; Antifreeze protection devices, including insulation material and micro-heating wires surrounding the siphon water pipe system and key components, are used to prevent the system from freezing in low-temperature environments; and An emergency power supply, electrically connected to the vacuum water priming device, is used to maintain system operation in the event of a power outage.

8. The system according to claim 1, characterized in that, It also includes an energy optimization system, which comprises: A miniature hydroelectric power generation device is installed at the outlet end of the siphon water pipe system to generate electricity using water flow energy. Solar-powered devices, including solar panels and energy storage devices, are used to provide power to system control and monitoring equipment; and An energy management unit, electrically connected to the micro hydroelectric generator and the solar power supply unit, is used to manage and distribute electrical energy.

9. The system according to claim 1, characterized in that, The siphon water pipe system has a non-uniform pipe diameter design, with a small-large-small ratio structure in the order of inlet end-middle section-outlet end. The pipe diameter of the middle section is enlarged to reduce flow resistance. The connection between the siphon water pipe system and the forepool of the filter head is equipped with a floating interface, which can adapt to water level fluctuations of ±1.5 meters.

10. The system according to claim 1, characterized in that, The system operates by including the following steps: Close the valve at the outlet end of the siphon water pipe system; The vacuum water intake device is activated to pump water from the main canal to the highest point of the siphon water intake pipeline system; Open the valve at the outlet of the siphon water pipe system to allow water to flow into the forepool of the filter head, thus creating a siphon effect; Start the pipeline centrifugal pump of the drip irrigation pressurization head to draw water from the forepool of the filter head and pressurize it to send it into the drip irrigation system; A continuous siphon water supply is maintained by the water level difference between the main canal and the forebay of the filter head.

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