A valve water leakage and water passing detection device

Abstract

The utility model provides a valve water leakage and water passing detection device, integrates manual stop valve and assembly box in an organic whole. Detection device is by water leakage induction board (23), water inlet induction conductor (24), water outlet induction conductor (25), outer fixed plate (40), assembly box (50), inner fixed plate (60) and water leakage and water passing detection circuit composition. The signal that will set water leakage induction board and water inlet and outlet induction conductor gather is input to water leakage and water passing detection circuit, and singlechip receives signal, and signal transmission to background control system. Can realize remote monitoring of stop valve operating condition, saves manual work, saves water resource, can realize the timely response of operation failure simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of water-saving irrigation technology, specifically relating to a valve leakage and water flow detection device. Background Technology

[0002] my country faces a shortage of total water resources, which are unevenly distributed in time and space. Agricultural water use accounts for a high proportion but has a low utilization rate, and the conflict between water and soil is prominent. Promoting efficient water-saving irrigation technology has become an urgent task to solve the problem of agricultural water use.

[0003] Electric valves are the core actuators of water-saving irrigation systems, and their performance and cost directly affect the practicality and widespread adoption of these systems. Currently, automated computer irrigation control systems developed abroad, such as those by Rainbird and Motorola in the US, primarily use dedicated water control valves. These valves suffer from high technical complexity, difficult installation and commissioning, and high unit prices and maintenance costs, hindering their large-scale application in my country's agricultural sector. Meanwhile, traditional domestic electric valves generally suffer from complex structural designs, high manufacturing costs, and high maintenance costs. Furthermore, most valves and control components are integrated, making disassembly and repair difficult after damage, preventing reuse and further increasing equipment investment costs in agricultural production, thus restricting the efficiency of promoting water-saving irrigation technologies.

[0004] In addition, valves may leak or run out of water during irrigation for various reasons. If the valve leaks severely, it may cause the valve to malfunction due to a short circuit in the circuit board, resulting in uncontrolled irrigation and water run-out, which will seriously affect the normal operation of the automatic irrigation system and the safety of the electric valve. Summary of the Invention

[0005] To address the shortcomings of existing electric irrigation valves in terms of cost, function, and structure, this invention provides a valve leakage and water flow detection device. It integrates a manual shut-off valve with a mounting box, and inputs signals collected by a leakage sensing plate and inlet / outlet water sensing conductors to a leakage and water flow detection circuit. This achieves leakage detection and inlet / outlet water level monitoring functions for the shut-off valve. It enables remote monitoring of the manual shut-off valve's operation, saving labor and water resources, while also allowing for timely response to operational faults.

[0006] The present invention provides a valve leakage and water flow detection device that is assembled on a traditional stop valve (6) and integrated with it. The stop valve (6) includes a valve stem (1), a waterproof nut (2), a threaded fixing sleeve (3), a valve cover (4), and a valve body (5).

[0007] The detection device consists of an outer fixing plate (40), an assembly box (50), an inner fixing plate (60), a water leakage sensing plate (23), and a water leakage detection circuit, which are assembled on the shut-off valve (6) from bottom to top.

[0008] The outer fixing plate (40) has an outer fixing plate sleeve hole (45) at its center position. The outer fixing plate (40) has symmetrically opened outer fixing plate fixing holes (41) at its four corners, corresponding to the inner fixing plate fixing holes (61). The outer fixing plate (40) is fitted onto the threaded fixing sleeve (3) of the stop valve (6) using the outer fixing plate sleeve hole (45).

[0009] The assembly box (50) has an assembly box sleeve hole (55) at the center of its bottom. The assembly box fixing holes (51) are symmetrically opened around its perimeter at positions corresponding to the fixing holes (41) of the outer fixing plate and the fixing holes (61) of the inner fixing plate. The bottom of the assembly box (50) is fitted onto the threaded fixing sleeve (3) of the shut-off valve (6) using the assembly box fixing holes (51). The water leakage detection circuit is provided on the inner wall of the assembly box (50).

[0010] The inner fixing plate (60) has an inner fixing plate sleeve hole (65) at its center position. The inner fixing plate (60) has symmetrical inner fixing plate fixing holes (61) at its four corners, corresponding to the outer fixing plate fixing holes (41). The inner fixing plate (60) is fitted onto the threaded fixing sleeve (3) of the stop valve (6) using the fixing plate sleeve hole (65).

[0011] The valve cover (4) has valve cover fixing holes (7) symmetrically opened on the valve cover (4) corresponding to the fixing holes (41) of the outer fixing plate. The component fixing bolts (11) are used to pass through the fixing holes (61) of the inner fixing plate, the fixing holes (51) of the assembly box, and the fixing holes (41) of the outer fixing plate to fix the outer fixing plate (40), the assembly box (50) and the inner fixing plate (60) to the valve cover (4) as a whole.

[0012] The leakage sensing plate (23) has a sensing plate sleeve hole (26) at its center and a sensing plate insulating ring (28) at its edge. The leakage sensing plate (23) has symmetrical sensing plate fixing holes (27). The leakage sensing plate (23) is fitted onto the threaded fixing sleeve (3) of the shut-off valve (6) using the sensing plate sleeve hole (26). The leakage sensing plate (23) is fixed onto the inner fixing plate (60) using the sensing plate fixing bolt (15) and the sensing plate fixing hole (27). The shut-off valve (6) and the leakage sensing plate (23) are insulated and isolated using the sensing plate insulating ring (28). An electrode connecting piece (18) is provided between the nut of the sensing plate fixing bolt (15) and the leakage sensing plate (23). The electrode connecting piece (18) is connected to the corresponding signal input terminal of the leakage detection circuit through the leakage signal line (17) and the sensing plate grounding line (16) respectively.

[0013] Three induction conductor fixing holes (8) are opened at the inlet and outlet ends of the valve body (5) of the shut-off valve (6). The inlet induction conductor (24), the inlet and outlet grounding conductor (30) and the outlet induction conductor (25) are fixed in the corresponding induction conductor fixing holes (8) and sealed. Electrode connecting pieces (18) are set at the top of the three conductors and are electrically connected to the three water flow signal lines (19) respectively, and connected to the signal input terminal of the leakage and water flow detection circuit.

[0014] Compared with traditional electric valves for irrigation, this utility model has the following advantages: 1. Cost advantage: The manual shut-off valve is designed to be disassembled and assembled with the assembly box, which is simple in structure and low in manufacturing cost; damaged parts can be replaced individually, enabling reuse and reducing maintenance costs.

[0015] 2. Functional integration: It has the functions of structural fixation, leakage detection, and water inlet and outlet monitoring, without the need for additional detection equipment.

[0016] 3. High practicality: The low power consumption design is suitable for long-term outdoor operation in agriculture, and the installation and debugging are simple, which is suitable for the promotion of agricultural irrigation scenarios in my country.

[0017] 4. It enables remote monitoring of the operation of manually operated shut-off valves, saving labor and water resources. It can enable timely response to operational failures. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the appearance structure of this utility model; Figure 2 This is a schematic diagram of the structure of the shut-off valve (6) of this utility model; Figure 3 This is a front sectional view of the overall assembly of this utility model; Figure 4 This is a left-side sectional view of the overall assembly of this utility model; Figure 5 This is a plan view of the outer fixing plate (40) of this utility model; Figure 6 This is a bottom plan view of the assembly box (50) of this utility model; Figure 7 This is a plan view of the internal fixing plate (60) of this utility model; Figure 8This is a schematic diagram of the planar structure and assembly of the water leakage sensing plate (23) of this utility model; Figure 9 This is a top view of the valve cover (4) of this utility model; Figure 10 This is the circuit diagram of the water leakage detection circuit of this utility model.

[0020] Figure 1: 1. Valve stem, 2. Waterproof nut, 3. Threaded fixing sleeve, 4. Valve cover, 5. Valve body, 6. Gate valve, 7. Valve cover fixing hole, 8. Induction conductor fixing hole, 9. Valve cover threaded hole, 11. Component fixing bolt, 15. Induction plate fixing bolt, 16. Induction plate grounding wire, 17. Leakage signal line, 18. Electrode connecting piece, 19. Water flow signal line, 23. Leakage induction plate, 24. Inlet induction conductor, 25. Outlet induction conductor, 26. Induction plate sleeve hole, 27. Induction plate fixing hole, 28. Induction plate insulating ring, 30. Inlet and outlet grounding conductors, 40. Outer fixing plate, 41. Outer fixing plate fixing hole, 45. Outer fixing plate sleeve hole, 50. Assembly box, 51. Assembly box fixing hole, 55. Assembly box sleeve hole, 60. Inner fixing plate, 61. Inner fixing plate fixing hole, 65. Inner fixing plate sleeve hole, Leakage and water flow detection circuit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This invention provides a valve leakage and water flow detection device that integrates a manual shut-off valve with a mounting box. The signals collected by the leakage sensing plate and inlet / outlet water sensing conductors are input to the leakage and water flow detection circuit, realizing the functions of shut-off valve leakage detection and inlet / outlet water position monitoring. It enables remote monitoring of the manual shut-off valve's operation, saving labor and water resources, while also allowing for timely response to operational faults.

[0023] like Figure 1As shown in Figures 2, 3, and 4, the gate valve 6 of this utility model is a common gate valve commonly used in water conservancy projects, agricultural and forestry irrigation, and domestic water use. It includes a valve stem 1, a waterproof nut 2, a threaded fixing sleeve 3, a valve cover 4, and a valve body 5, and is mostly made of metal and engineering plastics. This utility model relates to a valve leakage and water flow detection device integrated with the gate valve 6. This detection device consists of an outer fixing plate 40, an assembly box 50, an inner fixing plate 60, a leakage sensing plate 23, and a leakage and water flow detection circuit, which are assembled on the gate valve 6 from bottom to top.

[0024] like Figure 3 As shown in Figures 4, 5, and 7, the outer fixing plate 40 has an outer fixing plate sleeve hole 45 at its center, and symmetrical outer fixing plate fixing holes 41 corresponding to the inner fixing plate fixing holes 61 are symmetrically opened at the four corners of the outer fixing plate 40. The outer fixing plate 40 is fitted onto the nut seat of the threaded fixing sleeve 3 of the shut-off valve 6 using the outer fixing plate sleeve holes 45. The inner fixing plate 60 has an inner fixing plate sleeve hole 65 at its center, and symmetrical inner fixing plate fixing holes 61 corresponding to the outer fixing plate fixing holes 41 are symmetrically opened at the four corners of the inner fixing plate 60. The inner fixing plate 60 is fitted onto the threaded fixing sleeve 3 of the shut-off valve 6 using the fixing plate sleeve holes 65. The outer fixing plate 40 and the inner fixing plate 60 can be made of engineering plastics with good insulation properties.

[0025] like Figure 3 As shown in Figures 4 and 6, an assembly box 50 has an assembly box sleeve hole 55 at its bottom center. Around the assembly box 50, symmetrical assembly box fixing holes 51 are formed at positions corresponding to the outer fixing plate fixing holes 41 and the inner fixing plate fixing holes 61. The bottom of the assembly box 50 is fitted onto the threaded fixing sleeve 3 of the shut-off valve 6 using these mounting holes 51. A leakage detection circuit is fixed to the inner wall of the assembly box 50. The assembly box 50 can be made of metal sheet or engineering plastic.

[0026] like Figure 3 As shown in Figures 4 and 9, valve cover 4 has valve cover fixing holes 7 symmetrically opened on it corresponding to the fixing holes 41 of the outer fixing plate. The outer fixing plate 40, the assembly box 50 and the inner fixing plate 60 are fixed to the valve cover 4 as a whole by using component fixing bolts 11 passing through the fixing holes 61 of the inner fixing plate, the fixing holes 51 of the assembly box and the fixing holes 41 of the outer fixing plate.

[0027] like Figure 3As shown in Figures 4, 8, and 10, a sensor plate sleeve hole 26 is opened at the center of the leakage sensor plate 23, and a sensor plate insulating ring 28 is provided at its edge. Sensor plate fixing holes 27 are symmetrically opened on the leakage sensor plate 23. The leakage sensor plate 23 is fitted onto the threaded fixing sleeve 3 of the shut-off valve 6 through the sensor plate sleeve hole 26, and the leakage sensor plate 23 is fixed to the inner fixing plate 60 using the sensor plate fixing bolt 15 and the sensor plate fixing hole 27. The sensor plate insulating ring 28 provides insulation between the shut-off valve 6 and the leakage sensor plate 23. An electrode connecting piece 18 is provided between the nut of the sensor plate fixing bolt 15 and the leakage sensor plate 23, respectively connected to the signal input terminal of the leakage detection circuit via the leakage signal line 17 and the sensor plate grounding line 16. The leakage sensor plate 23 is preferably made of copper with a high conductivity, and the sensor plate insulating ring 28 is preferably made of epoxy resin. The leakage sensor plate 23 and the sensor plate insulating ring 28 are manufactured using an integral molding process.

[0028] like Figure 1 As shown in Figures 3, 4, and 10, three induction conductor fixing holes 8 are opened at the inlet and outlet ends of the valve body 5 of the shut-off valve 6, respectively. The inlet induction conductor 24, the inlet / outlet grounding conductor 30, and the outlet induction conductor 25 are fixed in the corresponding induction conductor fixing holes 8 and sealed. Electrode connecting pieces 18 are set at the top of the three conductors and are electrically connected to the three water flow signal lines 19, respectively, and connected to the signal input terminal of the leakage detection circuit.

[0029] Principle of water leakage detection circuit: When a valve leaks, the leak detection board 23, due to the presence of water, connects the electrode connection piece 18 on the sensing plate fixing bolt 15, the leak signal line 17, and the sensing plate grounding line 16 to the circuit board, exhibiting low resistance. The signal is then pulled low by the microcontroller's high potential through a very small resistor R1. In this circuit, one end of resistor R1 is connected to resistor R4, and the other end is directly connected to the microcontroller's P1 terminal, causing the microcontroller's P1 terminal to change from an initial high potential to a low potential. After recognizing the low potential signal at the P1 terminal, the microcontroller immediately transmits the corresponding "valve leak" command signal to the SIM card, thereby triggering subsequent alarm or notification actions.

[0030] When water flow is sensed at the inlet 24 of valve body 5 and the inlet / outlet grounding conductor 30, the water flow acts as a conductive medium, forming a conductive path between the detection element, resistor R2, and GND. This transmits the low-potential signal of the incoming water to the P2 terminal of the microcontroller, causing the P2 terminal to change from high to low. After capturing the low-potential signal at the P2 terminal, the microcontroller transmits the specific signal of "water flow at the inlet" to the SIM card, completing the signal reporting of the water inlet status.

[0031] When water flow is detected at the outlet 25 of valve body 5 and the inlet / outlet grounding conductor 30, the water flow activates the detection circuit, forming an effective conductive path between the detection point, resistor R3, and GND. This transmits the low-potential signal of the water outlet to resistor R3, causing the microcontroller's P3 terminal to switch from high to low potential. After recognizing this signal, the microcontroller transmits the corresponding "water flow at the outlet" signal to the SIM card, thus realizing the signal transmission of the water outlet status.

[0032] Among them, R1, R2, and R3 have a resistance of less than 1KΩ and are input protection resistors. Their resistance is very small and can pull the microcontroller input low when there is a water signal. R4, R5, and R6 have a resistance of 200KΩ and are microcontroller anti-interference protection resistors. Because their resistance is very large, they will not pull the microcontroller high potential low. However, the resistance of the water signal conduction is less than 2KΩ, which is sufficient to pull the microcontroller high potential low.

[0033] The microcontroller is preferably a low-power STM32L series chip, and the circuit is integrated on a PCB board, which is fixed to the inner wall of the assembly box 50 by bolts.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A valve leakage and water flow detection device, which is mounted on and integrated with a conventional gate valve (6), wherein the gate valve (6) includes a valve stem (1), a waterproof nut (2), a threaded fixing sleeve (3), a valve cover (4), and a valve body (5); characterized in that: The detection device consists of an outer fixing plate (40), an assembly box (50), an inner fixing plate (60), a water leakage sensing plate (23), and a water leakage detection circuit, which are assembled on the shut-off valve (6) from bottom to top. The outer fixing plate (40) has an outer fixing plate sleeve hole (45) at its center position. The outer fixing plate (40) has symmetrically opened outer fixing plate fixing holes (41) at its four corners, corresponding to the inner fixing plate fixing holes (61). The outer fixing plate (40) is fitted onto the threaded fixing sleeve (3) of the shut-off valve (6) using the outer fixing plate sleeve hole (45). The assembly box (50) has an assembly box sleeve hole (55) at the center of its bottom, and assembly box fixing holes (51) are symmetrically opened around its perimeter at positions corresponding to the fixing holes (41) of the outer fixing plate and the fixing holes (61) of the inner fixing plate. The bottom of the assembly box (50) is fitted onto the threaded fixing sleeve (3) of the shut-off valve (6) using the assembly box fixing holes (51); the water leakage detection circuit is provided on the inner wall of the assembly box (50). The inner fixing plate (60) has an inner fixing plate sleeve hole (65) at its center position. The inner fixing plate (60) has symmetrical inner fixing plate fixing holes (61) at its four corners, corresponding to the outer fixing plate fixing holes (41). The inner fixing plate (60) is fitted onto the threaded fixing sleeve (3) of the stop valve (6) using the fixing plate sleeve hole (65). The valve cover (4) is symmetrically provided with valve cover fixing holes (7) corresponding to the fixing holes (41) of the outer fixing plate. The component fixing bolts (11) are used to pass through the fixing holes (61) of the inner fixing plate, the fixing holes (51) of the assembly box, and the fixing holes (41) of the outer fixing plate to fix the outer fixing plate (40), the assembly box (50) and the inner fixing plate (60) to the valve cover (4) as a whole. The leakage sensing plate (23) has a sensing plate sleeve hole (26) at its center and a sensing plate insulating ring (28) at its edge. The leakage sensing plate (23) has symmetrical sensing plate fixing holes (27). The leakage sensing plate (23) is fitted onto the threaded fixing sleeve (3) of the shut-off valve (6) using the sensing plate sleeve hole (26). The leakage sensing plate (23) is fixed onto the inner fixing plate (60) using the sensing plate fixing bolt (15) and the sensing plate fixing hole (27). The shut-off valve (6) and the leakage sensing plate (23) are insulated and isolated using the sensing plate insulating ring (28). An electrode connecting piece (18) is provided between the nut of the sensing plate fixing bolt (15) and the leakage sensing plate (23). The electrode connecting piece (18) is connected to the corresponding signal input terminal of the leakage detection circuit through the leakage signal line (17) and the sensing plate grounding line (16) respectively. Three induction conductor fixing holes (8) are opened at the inlet and outlet ends of the valve body (5) of the shut-off valve (6). The inlet induction conductor (24), the inlet and outlet grounding conductor (30) and the outlet induction conductor (25) are fixed in the corresponding induction conductor fixing holes (8) and sealed. Electrode connecting pieces (18) are set at the top of the three conductors and are electrically connected to the three water flow signal lines (19) respectively, and connected to the signal input terminal of the leakage and water flow detection circuit.

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