A water-saving irrigation water metering device

Abstract

The present invention provides a water-saving irrigation water metering device including a flow meter device, wherein the flow meter device includes a main frame, a fastener and an ultrasonic component. The main frame is composed of a base, a fixed seat and a handle. The left and right ends of the base are provided with fixed seats, which are connected to the handle. The fastener is composed of an arc plate, a rotating shaft and a torsion spring. The arc plate is hinged at the left and right ends of the base through the rotating shaft. The torsion spring makes the arc plate naturally shrink inward to form a ring body to wrap the upstream and downstream ends of the branch pipe. The ultrasonic component includes a bottom plate fixed on the base, an ultrasonic processor and a sensor. The sensor is connected to the processor through a data cable, and the processor transmits the flow data to the main controller through the LoRa gateway. The device is compact and portable in design, easy to assemble and disassemble quickly, adapts to multi-branch irrigation scenarios, and effectively reduces installation complexity and labor costs; the device monitors the irrigation water consumption in real time, helps water resource managers adjust the irrigation amount according to crop needs and weather conditions, avoids over-irrigation, and reduces water waste.

Description

Technical Field

[0001] The invention belongs to the technical field of flow volume measurement tools, and in particular relates to a water volume metering device for water-saving irrigation. Background Art

[0002] Irrigation flowmeter is a device used to measure the water flow in the irrigation system. It optimizes the use efficiency of water resources by monitoring the flow data. In modern agriculture, the rational use of irrigation flowmeters helps to save water, prevent over-irrigation, and increase crop yields, thereby achieving the purpose of energy saving and consumption reduction. With the increasing global water shortage problem, scientific management of agricultural irrigation water has become particularly important, so the application of flowmeters has practical significance.

[0003] At present, traditional mechanical or electromagnetic flowmeters are commonly used in irrigation systems. These flowmeters are usually installed in the main pipeline to monitor the delivery of large flows of water. Although such devices can provide accurate total flow data, their application in water volume monitoring at the end of the branch pipe is limited, especially when there are a large number of branches. Installing flowmeters one by one will lead to increased equipment costs and complicated installation operations. In addition, mechanical flowmeters require water to flow through the flow measurement components to complete the measurement, but for hose-type branches or irrigation scenarios that are used more frequently, the installation location of such devices is inconvenient, easy to wear, and has a short service life. In summary, the following problems are common in existing irrigation flowmeters: 1. It is not suitable for large-scale installation at the end of the branch pipe: The flow measurement components of mechanical or electromagnetic flowmeters are complex in structure and are not suitable for installation at the end of a large number of branches in the irrigation system. Especially for hose-type branches, it is difficult to fix and measure such flowmeters, and they usually require large-scale disassembly and adjustment, which is cumbersome to operate. 2. Lack of portability: Most of the existing flowmeters are fixedly installed and cannot be flexibly moved. This is not friendly to agricultural operations that require frequent adjustment of irrigation equipment, and the equipment does not have the functions of quick disassembly and reuse. 3. Unable to realize intelligent monitoring and control: In the existing technology, irrigation flow meters are mainly used to measure the total flow, and cannot monitor the water volume of each branch pipe in real time and accurately. For agricultural irrigation scenarios with high water conservation requirements, this lack of sub-flow monitoring is not conducive to the efficient management of water resources. In addition, the existing flow meters cannot provide real-time alarms and flow limit control for abnormal water volume (such as leaks or unnecessary water use).

[0004] Ultrasonic flowmeters use the propagation time difference of ultrasonic waves in fluids to measure flow velocity and flow rate, and are widely used in industrial and agricultural fields. However, one form of ultrasonic flowmeter in the prior art still has the problem of difficult access to the pipeline and is not suitable for the installation of many branch pipes. Another form requires a bundling component to fix a pair of ultrasonic flowmeters on the side wall of the pipeline. This bundling process also has the problem of difficult operation and is not suitable for the installation of many branch pipes.

[0005] The existing irrigation flowmeters are inconvenient to install, inflexible to use, and lack intelligent monitoring when used in scenarios such as multi-branch pipes and hoses. In order to achieve precise water-saving control, it is necessary to develop portable, easy-to-install, and intelligent flowmeter devices to meet the irrigation needs of modern agriculture. Summary of the invention

[0006] In view of the defects and problems existing in the prior art, the present invention provides a water-saving irrigation water metering device, which aims to accurately monitor the water volume of irrigation branches, save water and prevent leakage, and improve the efficiency of water resource utilization through portable and intelligent ultrasonic flow monitoring and current limiting control technology.

[0007] The solution of the present invention to solve the technical problem is: a water-saving irrigation water metering device is adopted, including a flow meter device, which is installed on the branch pipe of the irrigation water pipe and is used for monitoring the water volume at the end of the branch pipe. The flow meter device includes a main frame, a fastener and an ultrasonic component. The main frame includes a base, a fixed seat and a handle. Fixed seats are respectively arranged at both ends of the upper part of the base, and the handle is connected between the two fixed seats; the fastener includes an arc plate, a rotating shaft and a torsion spring, an edge of an arc surface is arranged at the lower part of the base, and a pair of arc plates are hinged to the edges of the arc surfaces at both ends of the base through the rotating shafts, and a torsion spring is installed on each rotating shaft. The torsion spring can keep each arc plate naturally contracted inwardly; the arc plates can form a circular ring with the arc surface at the lower part of the base after being buckled, so that the arc plates at both ends of the base The ring body is respectively wrapped around the upstream end and the downstream end of the branch pipe; the ultrasonic component includes a bottom plate, an ultrasonic processor and a pair of ultrasonic sensors; the bottom plate is fixed to the middle part of the upper surface of the base by bolts; the ultrasonic processor is fixed to the upper part of the bottom plate; card slots are respectively provided at both ends of the base and below the fixing seat; an ultrasonic sensor is respectively fixed in each card slot; the data line of each ultrasonic sensor is connected to the ultrasonic processor through a plug-in terminal; the signal processing unit of the ultrasonic processor calculates and converts the flow rate, and transmits the flow data of the corresponding branch pipe to the main controller through the LoRa gateway / base station; the main controller compares the flow rate of each branch pipe and compares the relationship between the sum of the flow rates of each branch pipe and the total flow rate, and sends out a warning signal for abnormal branch flow rate.

[0008] Preferably, it also includes a driving assembly, which includes a U-shaped rod, a shift rod, a movable pin shaft, a fixed pin shaft and a connecting rod. The U-shaped rod includes left and right vertical rods and a cross bar in the middle. A pair of guide grooves are respectively provided on the side walls at both ends of the base, and a matching groove is provided at the bottom of each pair of guide grooves. The two vertical rods of each U-shaped rod are respectively inserted into the corresponding guide grooves, and a movable pin shaft is fixed at the lower end of each vertical rod, and the movable pin shaft is located in the matching groove; the fixed pin shaft is fixed on the outer side wall of each arc plate, and the connecting rod is hinged between the movable pin shaft and the fixed pin shaft; the shift rod is fixedly connected between the cross bars of the left and right U-shaped rods, and the shift rod is located below the handle.

[0009] Preferably, the irrigation water pipe is provided with a main pipe, the proximal end of the main pipe is connected to the water source, the distal end of the main pipe is connected to the branch pipe through a tee, and the branch pipe is respectively connected to a series of the branch pipes through a tee. The water-saving irrigation water metering device is used to be installed on each branch pipe at the water delivery end of the irrigation water pipe; a water pump, a total flow meter and a solenoid valve are connected in series on the main pipe in sequence, and a main controller is provided to control the operation of the water pump and the opening and closing of the solenoid valve. The main controller detects the total water supply through the total flow meter. The main controller establishes a wireless communication relationship with each branch flow meter device through the LoRa gateway / base station to obtain the water volume of each branch pipe in real time.

[0010] Preferably, a water pressure sensor is installed on the main pipe, and the main controller also detects the water pressure in the main pipe through the water pressure sensor, and determines whether there is water leakage and abnormal water use according to abnormal characteristics of the water pressure.

[0011] Preferably, perforations are respectively provided in the middle of both ends of the base, an inherent conductive layer is sleeved inside the perforations, the ultrasonic probe of each ultrasonic sensor touches the conductive layer, each conductive layer touches the wall of the branch pipe, and the conductive layer closely fits the surface of the ultrasonic probe and the surface of the branch pipe wall.

[0012] Preferably, a solenoid valve is installed on the branch pipe, and the main controller controls the opening and closing of the solenoid valve by sending a control instruction to the ultrasonic processor, so as to control the corresponding branch pipe to limit or intercept the flow.

[0013] Preferably, it also includes a flow limiting component, which includes a support cover, an inner groove, an arc-shaped airbag, an air pipe and a micro air pump. The arc plates at both ends are connected as a whole through the support cover, a groove is provided in the middle part of the support cover, and the arc-shaped airbag is mounted in the inner groove. The micro air pump is installed in the ultrasonic processor, and the air supply port of the micro air pump is connected to the inner cavity of the arc-shaped airbag through the air pipe. When it is necessary to limit the flow of the corresponding branch pipe, the signal processing unit controls the micro air pump to blow air into the arc-shaped airbag. When the arc-shaped airbag collides, it can compress the branch pipe, thereby reducing the cross-section of the branch pipe and increasing the water flow resistance of the branch pipe.

[0014] Preferably, a locking pin is installed on the top of each fixing seat. When the flow meter device is assembled on the branch pipe, the locking pin is screwed to support its lower end on the lever to prevent the lever from moving upward, thereby limiting the arc plate from expanding outward.

[0015] Preferably, a rubber pad is fixed on the inner wall of the arc-shaped plate, or an inner groove is provided and an arc-shaped air bag is installed to lift the branch pipe to ensure that the upper wall of the branch pipe can be in close contact with the conductive layer.

[0016] The device has efficient, intelligent and flexible water-saving management capabilities, which can significantly improve the water resource utilization rate of the irrigation system and reduce operating costs. The beneficial effects are mainly reflected in the following aspects.

[0017] 1. Portable and efficient installation: The device is compact and portable, can be quickly assembled and disassembled, and can adapt to the actual irrigation environment of a large number of branch pipes, effectively reducing installation complexity and labor costs, especially suitable for branch pipe use scenarios for one-time applications. The water metering device can help water resource managers understand the amount of irrigation water in real time and adjust the amount of irrigation water according to crop needs and weather conditions. This avoids over-irrigation and reduces water waste.

[0018] 2. Accurate flow monitoring: Non-contact water flow monitoring is achieved through ultrasonic sensors, which effectively avoids the complexity and wear problems of mechanical flow meter installation, improves measurement accuracy and service life, and is suitable for branch pipes of different diameters.

[0019] 3. Intelligent water management: Through the linkage between LoRa wireless communication and the main controller, the water flow data of each branch pipe can be obtained in real time, which can quickly identify abnormal water volume and automatically issue an alarm signal, or limit or intercept the flow as needed, effectively preventing water leakage and waste and saving water resources.

[0020] 4. Adjustable flow limiting function: The device integrates an airbag flow limiting component, which can adjust the flow of the branch pipe according to needs, control the water flow rate, meet different irrigation needs, and enhance the flexibility of water-saving management. At the same time, the locking pin design ensures the stability of the device under high flow limiting conditions to avoid structural failure.

[0021] 5. Strong adaptability: The modular structure design enables the device to adapt to branch pipes of different specifications. The cushion design inside the arc plate ensures close contact between the ultrasonic sensor and the pipe wall, improves the sound wave conduction efficiency and measurement accuracy, and further expands the applicability of the device.

[0022] 6. Abnormal water pressure detection: The combination of water pressure sensor and flow meter enables the system to not only monitor the flow of branch pipes, but also detect abnormal water pressure in the main pipe, so as to promptly discover and repair water leaks or unnecessary water use, avoid waste of water resources and improve water-saving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the flow metering device of the present invention in use;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the flow metering device of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of an ultrasonic component;

[0026] Figure 4 It is a schematic diagram of the side structure of the flow metering device;

[0027] Figure 5 It is a schematic diagram of the bottom structure of the main frame;

[0028] Figure 6 yes Figure 4 One of the schematic diagrams of the CC cross-section structure;

[0029] Figure 7 yes Figure 4 The second schematic diagram of the CC cross-section structure;

[0030] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure;

[0031] Fig. 9 yes Figure 6 The enlarged structural diagram of the middle D part;

[0032] Fig.10 It is a schematic diagram of the structure of the current limiting component;

[0033] Fig.11 It is the control relationship block diagram of the ultrasonic processor.

[0034] Numbers in the figure: 1-main frame; 2-fastener; 3-driving assembly; 4-ultrasonic assembly; 5-current limiting assembly; 6-tightening assembly; 7-water pump; 8-water pressure sensor; 9-total flow meter; 10-divided flow meter device; 11-base; 12-fixed seat; 13-handle; 14-main pipe; 15-branch pipe; 21-arc plate; 22-rotating shaft; 23-torsion spring; 31-guide groove; 32-U-shaped rod; 33-shift rod; 34-moving pin shaft; 35-fixed Pin shaft; 36-connecting rod; 37-matching groove; 41-bottom plate; 42-ultrasonic processor; 43-card slot; 44-ultrasonic sensor; 45-plug terminal; 46-conductive layer; 47-ultrasonic probe; 51-locking pin; 52-support cover; 53-inner groove; 54-arc-shaped airbag; 55-trachea; 56-micro air pump; 61-accommodating chamber; 62-elastic pulley; 63-side hole; 64-guide wheel; 65-belt membrane; 66-toothed plate. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Embodiment 1: A water-saving irrigation water metering device, such as Figure 1 As shown, the proximal end of the main pipe 14 is connected to the water source, and the distal end of the main pipe 14 is connected to the branch pipe through a tee, and the branch pipe is respectively connected to a series of branch pipes 15 through a tee. The water-saving irrigation water metering device is used to be installed on each branch pipe 15 at the end of the irrigation pipeline. The branch pipe 15 can be a hard pipe or a hose. Usually, the branch pipe 15 located at the end of the irrigation is a hose, and a water spray port or a nozzle is provided on the pipe wall. Since there are a large number of branch pipes 15, and many of the branch pipes 15 are used once, it is not realistic to connect a common water flow meter to each branch pipe 15. In view of this situation, the device of this embodiment adopts a small portable product, which can be quickly assembled at the root position of the branch pipe 15 to obtain the flow of the branch pipe 15, and can be easily recycled and used repeatedly, so as to achieve the purpose of water-saving control.

[0037] The main pipe 14 is connected in series with a water pump 7, a water pressure sensor 8, a total flow meter 9, and a solenoid valve. The main controller controls the operation of the water pump 7 and the opening and closing of the solenoid valve. The main controller also detects the water pressure in the main pipe 14 through the water pressure sensor 8. According to the abnormal characteristics of the water pressure, it is judged whether there is leakage and abnormal water use. Any abnormal water flow (such as pipeline leakage or unnecessary water use) can be discovered and repaired in time to prevent the loss of water resources. The main controller detects the total water supply through the total flow meter 9. At the same time, the main controller establishes a wireless communication relationship with each branch flow meter device 10 through the LoRa gateway / base station, and obtains the water volume of each branch pipe 15 in real time. When any water volume is abnormal, an alarm signal is issued and displayed. Alternatively, the corresponding branch pipe 15 is controlled to limit or intercept the flow.

[0038] The flow meter device 10 is as follows Figure 1 and Figure 2 As shown, it mainly includes a main frame 1, a fastener 2, a drive component 3 and an ultrasonic component 4. Figure 1 In the figure, the main frame 1 comprises a base 11, a fixing seat 12 and a handle 13. The lower surface of the base 11 is an arc surface, and the upper surface is a plane. The fixing seats 12 are fixed to the upper parts of the left and right ends of the base 11, and the handle 13 is connected between the left and right fixing seats 12.

[0039] like Figure 2 and Figure 4In the embodiment, the fastener 2 includes an arc plate 21, a rotating shaft 22 and a torsion spring 23, and the inner side surface of the arc plate 21 is an arc surface. At the edges of the lower arc surfaces at the left and right ends of the base 11, a pair of arc plates 21 at the left end and a pair of arc plates 21 at the right end are hinged through the rotating shaft 22 respectively. At the same time, a torsion spring 23 is installed on each rotating shaft 22, and the torsion spring 23 can keep each arc plate 21 naturally contracted inward. The pair of arc plates 21 at the left end can form a circular ring body at the left end with the base 11 after being buckled, and the pair of arc plates 21 at the right end can form a circular ring body at the right end with the base 11 after being buckled. The left end circular ring body and the right end circular ring body are respectively wrapped around the upstream end and the downstream end of the branch pipe 15.

[0040] like Figure 6 In the figure, the driving assembly 3 includes a U-shaped rod 32, a lever 33, a movable pin shaft 34, a fixed pin shaft 35 and a connecting rod 36. The U-shaped rod 32 includes two left and right vertical rods and a cross bar in the middle. A pair of guide grooves 31 are respectively provided on the side walls at the left and right ends of the base 11, and a matching groove 37 is provided at the bottom of each pair of guide grooves 31. The two vertical rods of each U-shaped rod 32 are respectively inserted into the corresponding pair of guide grooves 31, and a movable pin shaft 34 is fixed at the lower end of each vertical rod, and the movable pin shaft 34 is located in the matching groove 37. At the same time, Fig. 9 As shown, a fixed pin shaft 35 is fixed on the rear wall of each arc-shaped plate 21, and a connecting rod 36 is hinged between the movable pin shaft 34 and the fixed pin shaft 35. A lever 33 is fixedly connected between the cross bars of the left and right U-shaped rods 32, and the lever 33 is located below the handle 13. When in use, the handle 13 is used as a grip. When the handle 13 is held, an upward pressure is applied to the lever 33. When the lever 33 moves upward, the two U-shaped rods 32 at the left and right ends can be pulled upward at the same time, thereby driving each movable pin shaft 34 to slide upward in the matching groove 37. When each movable pin shaft 34 slides upward, the fixed pin shaft 35 is pulled upward by the corresponding connecting rod 36, so that each arc-shaped plate 21 is expanded outward. In the expanded state, the device can be mounted on the outside of the branch pipe 15.

[0041] like Figure 3As shown, the ultrasonic component 4 includes a bottom plate 41, an ultrasonic processor 42, a card slot 43, an ultrasonic sensor 44 and a plug-in terminal 45. The bottom plate 41 is fixed to the middle of the upper surface of the base 11 by bolts, and an ultrasonic processor 42 is fixed on the upper part of the bottom plate 41. A circuit board and a power module are installed in the ultrasonic processor 42. Card slots 43 are fixed at the left and right ends of the base 11 and below the fixed seat 12. An ultrasonic sensor 44 is respectively sleeved in each card slot 43. The data line of each ultrasonic sensor 44 is connected to the ultrasonic processor 42 through a plug-in terminal 45. A pair of ultrasonic sensors 44 is used as a non-contact flow meter to measure the flow velocity and flow rate by using the propagation time difference of ultrasonic waves in the fluid. It does not need to directly contact the water flow, will not cause resistance to the fluid, and has high measurement accuracy and stability.

[0042] like Figure 5 As shown, perforations are respectively provided in the middle of the left and right ends of the base 11, and an inherent conductive layer 46 is sleeved inside the perforations (silicone rubber has good elasticity and flexibility, can closely fit the surface of the ultrasonic probe and the surface of the object to be measured, and is widely used in industrial flaw detection and medical ultrasound as a coupling medium between the probe and the human body or object). The ultrasonic probe 47 of each ultrasonic sensor 44 touches the upper side of the conductive layer 46, and each conductive layer 46 touches the upper wall of the branch pipe 15, closely fitting the surface of the ultrasonic probe and the surface of the branch pipe 15, effectively reducing sound wave reflection and improving sound wave conduction efficiency.

[0043] like Fig.11 As shown, the two ultrasonic sensors 44 located at the left and right ends of the base 11 are ultrasonic sensor A and ultrasonic sensor B respectively. The two ultrasonic sensors 44 are connected to the input end of the signal processing unit in the ultrasonic processor 42. After the signal processing unit calculates and converts the flow rate, it transmits the flow data to the main controller through the LoRa gateway / base station. Ultrasonic sensors A / B are located at different positions of the pipeline, transmitting and receiving ultrasonic signals to generate initial measurement data. There is usually a certain physical distance between ultrasonic sensors, which are used to measure the flow rate of the fluid. Signal processing unit: Receives the signal from the sensor, performs signal processing steps such as filtering, amplification, and denoising to extract effective flow rate information. Flow calculation and converter: Calculates the flow rate according to the flow rate information extracted by the signal processing unit, and converts the flow information into a readable output signal, such as a current signal or a digital signal (420mA, Modbus, etc.). Display and control unit: Displays the flow data in real time. Power supply unit: Provides power support for the entire system. The ultrasonic sensor transmits the signal to the signal processing unit, and the signal processing unit transmits the processed information to the flow calculation unit, and finally outputs the flow data. The main controller compares the flow rates of each branch pipe and the relationship between the flow rates of each branch pipe and the total flow rate, and issues a warning signal for abnormal branch pipe flow rates.

[0044] On the basis of the above solution, a flow limiting control unit may be added. For example, a solenoid valve may be added to the branch pipe 15 to control the flow of the corresponding branch pipe 15, or a flow limiting control unit may be added. Fig.10 The current limiting component 5 is shown. Fig.10 In the figure, the flow limiting assembly 5 includes a support cover 52, an inner groove 53, an arc-shaped air bag 54, an air pipe 55 and a micro air pump 56. A locking pin 51 is installed on the top of each fixed seat 12. When the device is assembled with the branch pipe 15, the locking pin 51 is screwed to support its lower end on the lever 33 to prevent the lever 33 from moving upward, thereby preventing the arc plate 21 from expanding outward.

[0045] When the flow limiting function of the flow limiting component 5 is needed, the arc plates 21 at the left and right ends are connected as a whole through the support cover 52. An inner groove 53 is provided in the middle of the support cover 52. An arc-shaped airbag 54 is installed in the inner groove 53. The arc-shaped airbag 54 is in a contracted state in a natural state. A micro air pump 56 is installed in the ultrasonic processor 42. The air supply port of the micro air pump 56 is connected to the inner cavity of the arc-shaped airbag 54 through the air pipe 55. When the corresponding branch pipe 15 needs to be limited in flow, the signal processing unit controls the micro air pump 56 to blow air into the arc-shaped airbag 54. When the arc-shaped airbag 54 collides, it can compress the branch pipe 15, thereby reducing the cross section of the branch pipe 15 and increasing the water flow resistance of the branch pipe 15, so as to achieve the purpose of limiting the flow rate of the branch pipe 15.

[0046] When the current limiting degree is small, the locking pin 51 may not be screwed, but when the current limiting degree is large, the locking pin 51 needs to be screwed in advance to prevent the arc-shaped airbag 54 from causing the arc-shaped plates 21 on both sides to expand outwards during a collision.

[0047] The above solution is suitable for branch pipes 15 with marked diameters. However, for branch pipes 15 with different diameters, a cushion layer can be added inside the arc plate 21, such as fixing a rubber pad on the inner wall of the arc plate 21, or providing an inner groove 53 and installing an arc-shaped airbag 54. The purpose of the cushion layer is to raise the branch pipe 15 and ensure that the upper wall of the branch pipe 15 can be in close contact with the conductive layer 46. Alternatively, a method such as Figure 6 The structure shown, Figure 6 In the embodiment, the tightening assembly 6 includes a receiving chamber 61, an elastic pulley 62, a side hole 63, a guide wheel 64 and a belt film 65. The receiving chamber 61 is provided on the inner wall of the base 11, and the side hole 63 is provided on the arc-shaped side wall of the receiving chamber 61. Axle holes are provided on both side walls of the receiving chamber 61, and elastic pulleys 62 are installed in the two side axial holes. The rotating shaft of the elastic pulley 62 is installed with a coil spring. A toothed plate 66 is provided at the lower end of the arc plate 21, and the grooves of the toothed plates 66 of a pair of arc plates 21 are staggered with each other, so that the toothed plates 66 of a pair of arc plates 21 can be staggered and buckled together as shown in FIG. Figure 7 and Figure 8As shown. A belt film 65 is wound around the elastic pulley 62, and a guide wheel 64 is installed on the inner wall of the side hole 63. After the belt film 65 is led out from the elastic pulley 62 and bypasses the guide wheel 64, its end is fixed at the root of the toothed plate 66. When the arc plate 21 is driven inward by the torsion spring 23 to shrink inward, the belt film 65 can be wrapped around the outer wall of the branch pipe 15, and then the branch pipe 15 is pressed upward against the conductive layer 46, ensuring that it is tightly fitted to the surface of the ultrasonic probe 47 and the surface of the branch pipe 15 wall, effectively reducing the reflection of sound waves and improving the efficiency of sound wave conduction. The matching structure of the tightening component 6 and the arc plate 21 can tightly wrap the belt film 65 around the outer wall of the branch pipe 15 when driving, ensuring that it is tightly fitted to the surface of the ultrasonic probe 47, thereby reducing the reflection of sound waves, improving the efficiency of sound wave conduction, and improving the accuracy of ultrasonic detection. The torsion spring 23 realizes automatic operation by driving the arc plate 21, reducing the complexity of manual operation, and improving the convenience and operation efficiency of the equipment.

[0048] Based on the above-mentioned water-saving irrigation water metering device, its specific usage steps are as follows.

[0049] 1. Device installation:

[0050] First, select the irrigation branch pipe 15 to be monitored and position the device at the root of the branch pipe. Hold the handle 13 and apply force to pull the lever 33 upward, which simultaneously drives the U-shaped rods 32 at the left and right ends to move upward, thereby pushing the arc plate 21 to unfold.

[0051] After the arc-shaped plate 21 is fully unfolded, the device is sleeved on the outside of the branch pipe 15 to ensure that the branch pipe is firmly wrapped in the device.

[0052] When the lever 33 is released, the torsion spring 23 will automatically push the arc plate 21 to contract, forming two annular bodies to wrap the upstream end and the downstream end of the branch pipe, thereby completing the installation.

[0053] This step ensures that the device fits tightly to the branch pipe, which is convenient for subsequent ultrasonic measurement. The installation process is convenient and fast, and is suitable for the rapid deployment of a large number of branch pipes.

[0054] 2. Ultrasonic sensor debugging:

[0055] After installation, check the state of the ultrasonic sensor 44 in the device to ensure that it is in close contact with the branch pipe wall. In the left and right through-holes of the base 11, the conductive layer 46 of silicone rubber should be in close contact with the branch pipe wall to reduce sound wave reflection and ensure accurate measurement.

[0056] The ultrasonic sensors A and B are fixed by the card slots 43 to ensure the stability of transmitting and receiving signals.

[0057] The conductive layer 46 effectively improves the conduction efficiency of the ultrasonic signal, reduces errors, improves measurement accuracy, and ensures the accuracy of flow measurement.

[0058] 3. Flow monitoring and data transmission:

[0059] After the system is started, the ultrasonic sensors A / B begin to transmit and receive ultrasonic signals, and the ultrasonic processor 42 processes the signals in real time to calculate the water flow data of the branch pipe 15 .

[0060] Through the LoRa wireless communication module, the device transmits the real-time monitored flow data to the master controller. The master controller can monitor the water distribution of the entire irrigation system and identify whether there is abnormal flow in each branch pipe.

[0061] This step ensures that the irrigation water volume is monitored in real time, and abnormal situations (such as leakage, excessive irrigation) can be discovered and warned in time to avoid waste of water resources and improve water-saving effects.

[0062] 4. Current limiting control (optional):

[0063] When the water volume of a branch pipe is abnormal, the main controller can remotely control the start of the current limiting component 5. The signal processing unit controls the micro air pump 56 to inflate the arc-shaped airbag 54, and the arc-shaped airbag expands and compresses the branch pipe 15 to limit the water flow.

[0064] When high current limiting control is required, the locking pin 51 is screwed in advance to prevent the arc plate 21 from expanding outwards, thereby ensuring a stable current limiting process.

[0065] Effect description: The flow limiting component provides precise flow control function, which can effectively adjust the water flow rate, ensure the reasonable allocation of irrigation water, and further improve the efficiency of water resource management.

[0066] 5. Device disassembly and recycling:

[0067] After use, the user holds the handle 13 and pulls the lever 33 upward, and the arc-shaped plate 21 is unfolded to release the wrapping of the branch pipe. At this time, the device can be quickly disassembled from the branch pipe.

[0068] The device is designed to be portable and easy to disassemble, and can be reused on multiple branches, which improves the flexibility and economy of the equipment.

[0069] The portable design allows the device to be quickly disassembled and recycled, improving the efficiency of reuse and reducing the cost of equipment replacement.

[0070] The device has simple and flexible operating procedures, can quickly adapt to the needs of the irrigation system, and achieve precise water management and water conservation goals through intelligent monitoring and flow limiting control.

[0071] The above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modification, equivalent substitution, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-saving irrigation water volume metering device, comprising a branch flow meter device (10), the branch flow meter device (10) being installed on a branch pipe (15) of an irrigation water pipe and used for monitoring the water volume at the end of the branch pipe, characterized in that: The flow meter device (10) comprises a main frame (1), a fastener (2), a drive assembly (3) and an ultrasonic assembly (4); the main frame (1) comprises a base (11), a fixed seat (12) and a handle (13); the fixed seats (12) are respectively arranged at both ends of the upper part of the base (11); the handle (13) is connected between the two fixed seats (12); the fastener (2) comprises an arc plate (21), a rotating shaft (22) and a torsion spring (23); the edge of an arc surface is arranged at the lower part of the base (11); the arc surface edges at both ends of the base (11) are respectively hinged to a pair of arc plates (21) through the rotating shaft (22); the torsion spring (23) is installed on each rotating shaft (22); the torsion spring (23) 3) being able to keep each arc plate (21) naturally contracted inward; the arc plates (21) can form a circular ring with the arc surface at the bottom of the base (11) after being buckled, so that the circular rings at both ends of the base (11) are respectively wrapped around the upstream end and the downstream end of the branch pipe (15); the ultrasonic component (4) comprises a bottom plate (41), an ultrasonic processor (42) and a pair of ultrasonic sensors (44); the bottom plate (41) is fixed to the middle of the upper surface of the base (11) by bolts, the ultrasonic processor (42) is fixed on the upper part of the bottom plate (41), and slots (43) are respectively provided at both ends of the base (11) and below the fixing seat (12), and in each slot (43) there is respectively a An ultrasonic sensor (44) is mounted, and a data line of each ultrasonic sensor (44) is connected to an ultrasonic processor (42) via a plug-in terminal (45). After the signal processing unit of the ultrasonic processor (42) calculates and converts the flow rate, it transmits the flow rate data of the corresponding branch pipe (15) to the main controller via a LoRa gateway / base station. The main controller compares the flow rates of the various branch pipes and the relationship between the sum of the flow rates of the various branch pipes and the total flow rate, and issues a warning signal for abnormal branch pipe flow rates. The driving component (3) comprises a U-shaped rod (32), a lever (33), a movable pin shaft (34), a fixed pin shaft (35) and a connecting rod (36). The U-shaped rod (32) comprises two left and right vertical rods. and a cross bar in the middle, a pair of guide grooves (31) are respectively provided on the side walls at both ends of the base (11), a matching groove (37) is provided at the bottom of each pair of guide grooves (31), two vertical rods of each U-shaped rod (32) are respectively inserted into the corresponding guide grooves (31), a movable pin shaft (34) is fixed at the lower end of each vertical rod, and the movable pin shaft (34) is located in the matching groove (37); a fixed pin shaft (35) is fixed on the outer side wall of each arc plate (21), and a connecting rod (36) is hinged between the movable pin shaft (34) and the fixed pin shaft (35); a shifting rod (33) is fixedly connected between the cross bars of the left and right U-shaped rods (32), and the shifting rod (33) is located below the handle (13).

2. The water-saving irrigation water metering device according to claim 1, characterized in that: The irrigation water pipe is provided with a main pipe (14), the proximal end of the main pipe (14) is connected to a water source, the distal end of the main pipe (14) is connected to a branch pipe via a tee, and the branch pipes are respectively connected to a series of branch pipes (15) via the tees. The water-saving irrigation water volume metering device is used to be installed on each branch pipe (15) at the water delivery end of the irrigation water pipe; a water pump (7), a total flow meter (9) and a solenoid valve are sequentially connected in series on the main pipe (14), a main controller is provided to control the operation of the water pump (7) and the opening and closing of the solenoid valve, the main controller detects the total water supply through the total flow meter (9), and the main controller establishes a wireless communication relationship with each branch flow meter device (10) through a LoRa gateway / base station to obtain the water volume of each branch pipe (15) in real time.

3. The water-saving irrigation water metering device according to claim 2, characterized in that: A water pressure sensor (8) is installed on the main pipe (14), and the main controller also detects the water pressure in the main pipe (14) through the water pressure sensor (8), and determines whether there is water leakage and abnormal water use based on abnormal characteristics of the water pressure.

4. The water-saving irrigation water metering device according to claim 1, characterized in that: Perforations are respectively provided in the middle of both ends of the base (11), and an inherent conductive layer (46) is sleeved inside the perforations. The ultrasonic probe (47) of each ultrasonic sensor (44) contacts the conductive layer (46), and each conductive layer (46) contacts the wall of the branch pipe (15). The conductive layer (46) closely fits the surface of the ultrasonic probe and the surface of the wall of the branch pipe (15).

5. The water-saving irrigation water metering device according to claim 1, characterized in that: A solenoid valve is installed on the branch pipe (15), and the main controller controls the opening and closing of the solenoid valve by sending a control instruction to the ultrasonic processor (42), so as to control the corresponding branch pipe (15) to limit or intercept flow.

6. The water-saving irrigation water metering device according to claim 4, characterized in that: The invention also comprises a flow limiting component (5), the flow limiting component (5) comprising a support cover (52), an inner groove (53), an arc-shaped airbag (54), an air pipe (55) and a micro air pump (56), the arc-shaped plates (21) at both ends are connected as a whole through the support cover (52), a groove (53) is provided in the middle of the support cover (52), the arc-shaped airbag (54) is sleeved in the inner groove (53), the micro air pump (56) is installed in the ultrasonic processor (42), the air supply port of the micro air pump (56) is connected to the inner cavity of the arc-shaped airbag (54) through the air pipe (55), when the corresponding branch pipe (15) needs to be flow limited, the signal processing unit controls the micro air pump (56) to blow air into the arc-shaped airbag (54), when the arc-shaped airbag (54) collides, it can compress the branch pipe (15), thereby reducing the cross section of the branch pipe (15) and increasing the water flow resistance of the branch pipe (15).

7. The water-saving irrigation water metering device according to claim 1, characterized in that: A locking pin (51) is installed on the top of each fixing seat (12). When the flow meter device (10) is assembled on the branch pipe (15), the locking pin (51) is screwed so that its lower end is supported on the lever (33), thereby preventing the lever (33) from moving upward, thereby limiting the arc plate (21) from expanding outward.

8. The water-saving irrigation water metering device according to claim 6, characterized in that: A rubber pad is fixed on the inner wall of the arc-shaped plate (21), or an inner groove (53) is provided and an arc-shaped air bag (54) is installed to raise the branch pipe (15) to ensure that the upper wall of the branch pipe (15) is in close contact with the conductive layer (46).

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