Intelligent leak-proof valve

Abstract

The utility model provides an intelligent leakage-proof valve, including water pipe, the water pipe is provided with water inlet interface for connecting water inlet pipe and water outlet interface for connecting water outlet pipe respectively in both ends, is provided with control valve for opening and closing flow between water inlet interface and water outlet interface in water pipe, still include controller, the controller includes leakage sensor group, connects the control panel of leakage sensor group and is used for opening and closing control valve under the control of control panel and opening and closing piece, leakage sensor group sets up in water pipe and is compared control valve more close water inlet interface setting, leakage sensor group is used for detecting the flow change in water pipe and closes control valve through control panel control opening and closing piece when leaking, the beneficial effects of the utility model are: the scheme through integration controller and leakage sensor group has realized the real -time monitoring and automatic response of flow change in water pipe, can close control valve fast when detecting the leakage, thereby avoids the water loss accident.

Description

Technical Field

[0001] This utility model relates to a valve, and more particularly to an intelligent leak-proof valve. Background Technology

[0002] Mechanical impeller-type leak-proof valves are widely used in water supply systems, industrial pipeline networks, and fire protection facilities. Their main function is to prevent liquid backflow and accidental leakage, ensuring the safe and stable operation of the system. In practical use, when the fluid flows forward, the water flow drives the impeller inside the valve to rotate, thereby opening the valve passage and allowing the fluid to flow smoothly. Once the fluid velocity decreases or backflow occurs, the impeller stops or reverses its rotation due to mechanical inertia, and the valve is quickly closed by a linkage device, forming a sealing barrier and preventing fluid leakage. This structure is simple and reliable, suitable for scenarios such as urban water supply networks, chemical production pipelines, and building fire protection systems. It can effectively cope with daily flow changes and pressure fluctuations, but relies on a purely physical motion mechanism, requiring no external energy support during operation.

[0003] However, existing mechanical impeller-type leak-proof valves have significant drawbacks, primarily in their lack of intelligent structure and excessively slow response. Due to their purely mechanical design, the valve relies on the inertial motion of the impeller. In the event of sudden flow changes or emergencies (such as pipe rupture or instantaneous backflow), their closing response is slow, often delayed by several seconds or even longer, potentially leading to the escalation of leaks. Furthermore, the lack of intelligent elements, such as electronic sensors or automatic control modules, prevents real-time monitoring, remote adjustment, or adaptive flow changes, increasing the risk of failure under low flow rates or complex operating conditions. Simultaneously, mechanical components are prone to wear and aging, requiring frequent and costly maintenance, thus reducing overall reliability and service life. These shortcomings limit their adoption in modern intelligent systems and necessitate technological improvements. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent leak-proof valve that can improve response speed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent anti-leakage valve, comprising a water pipe, wherein both ends of the water pipe are respectively provided with an inlet port for connecting to an inlet pipe and an outlet port for connecting to an outlet pipe, and a control valve for opening and closing the flow between the inlet port and the outlet port is provided inside the water pipe, and further comprising a controller, wherein the controller includes a leakage sensor group, a control board connected to the leakage sensor group, and an opening and closing element controlled by the control board and used to open and close the control valve, the leakage sensor group being disposed inside the water pipe and being disposed closer to the inlet port than the control valve, the leakage sensor group being used to detect changes in the flow rate in the water pipe and, when leakage occurs, controlling the opening and closing element through the control board to close the control valve.

[0006] The beneficial effects of this invention are as follows: This solution, through the integration of a controller and a leakage sensor array, achieves real-time monitoring and automatic response to changes in water flow within the pipe. Upon detecting a leak, it can quickly close the control valve, thus preventing water damage accidents. Compared to traditional impeller-type leakage valves, this design eliminates the reliance on manual intervention, significantly improves response speed, and reduces the risk of misoperation. Furthermore, the leakage sensor array is positioned close to the water inlet, ensuring signal capture in the early stages of leakage, improving system sensitivity and reliability. As a preferred approach, the leakage sensor array can employ a piezoelectric sensor array, identifying abnormal flow by detecting instantaneous fluctuations in water pressure; when the pressure change exceeds a threshold, the control board immediately drives the opening and closing mechanism to perform a closing action. Another preferred approach is to design the opening and closing mechanism as an electromagnetic drive mechanism, controlled by the microprocessor of the control board. The coil excitation generates magnetic force to pull the valve core, completing valve closure within milliseconds. These structures optimize the water flow monitoring mechanism, reduce equipment failure rates, and are suitable for various water pipe environments, enhancing leak-proof performance.

[0007] Furthermore, the leakage sensor group includes a first flow sensor and a second flow sensor that transmit flow information at their respective locations to the control board. Both the first flow sensor and the second flow sensor are disposed inside the water pipe and are spaced apart from each other.

[0008] This solution uses two independent flow sensors spaced apart to simultaneously collect flow data from different locations in the water pipe. The control board compares the differences in the two readings to more accurately identify leaks, reducing false alarms caused by environmental interference (such as water pressure fluctuations) from a single sensor. The spacing optimizes the signal acquisition range, improving detection coverage and sensitivity, making it suitable for complex water flow environments. As a preferred approach, the first flow sensor can be an ultrasonic sensor, installed downstream of the inlet, measuring flow velocity by transmitting and receiving sound signals; the second flow sensor is a turbine sensor, located further downstream, acquiring flow values ​​through impeller rotation counting. The control board compares the data changes of both sensors to identify anomalies. Another preferred approach is to set the sensor spacing to an integer multiple of the pipe's inner diameter, facilitating the algorithm's calculation of flow gradient differences and optimizing data processing accuracy. This enhances the system's robustness, ensuring reliable operation under various conditions.

[0009] Furthermore, the distance between the first flow sensor and the second flow sensor is the judgment distance. The control board determines whether there is a water leak in the water pipe by receiving the flow information transmitted by the first flow sensor and the second flow sensor and the time difference between them.

[0010] By utilizing time difference analysis of flow information, the control board can accurately calculate the difference in water propagation velocity, thereby identifying the location of leaks and improving the accuracy of leak detection. The time difference mechanism reduces misjudgments caused by normal changes in water flow velocity (such as valve opening and closing), enhancing the system's anti-interference capability. As a preferred approach, the control board integrates a timing module, recording the time interval between the triggering of the first sensor signal and the reception of the second sensor signal, and combining this with a preset flow velocity model to determine if a leak has occurred. Another preferred approach is to fix the judgment distance to a specific value; the control board uses a digital signal processor (DSP) algorithm to analyze the time difference data, calculate the flow velocity deviation rate, and trigger a shutdown action when the deviation exceeds a threshold. This achieves high-precision leak detection, reduces maintenance costs, and is suitable for dynamic water flow environments.

[0011] Furthermore, the water pipe is provided with a first mounting port and a second mounting port corresponding to the positions of the first flow sensor and the second flow sensor, respectively, and the wires of the first flow sensor and the second flow sensor are respectively sealed in the first mounting port and the second mounting port.

[0012] The mounting port design ensures stable sensor installation and reliable wire sealing, preventing short circuits caused by water immersion and avoiding sensor displacement under water flow impact, thus improving the overall durability and safety of the equipment. The sealing method protects electrical connection points, while the fixing method maintains the sensor's precise position, ensuring consistent flow data acquisition. As a preferred method, short-circuit prevention sealing includes filling the internal gaps of the mounting port with epoxy resin potting compound and wrapping the wire inlet with a silicone sealing ring, forming a double waterproof barrier. Fixing methods to prevent displacement include designing a snap-fit ​​bracket to insert the sensor into the mounting port slot and using threaded fasteners to lock the sensor base to the pipe wall. Another preferred method is to have a guide groove structure on the inner wall of the mounting port, with the sensor fixed by a spring clamping mechanism, and the wire ends insulated with heat-shrink tubing. This optimizes installation reliability, reduces maintenance frequency, and is suitable for high-pressure water pipe systems.

[0013] Furthermore, it also includes a wireless antenna connected to the control board and used to amplify the wireless signal, the control board transmitting a signal to the terminal via the wireless antenna indicating whether the water pipe is leaking.

[0014] The addition of a wireless antenna realizes remote transmission of water leakage signals, allowing users to receive alarm information in real time through terminal devices (such as mobile phone APPs), which facilitates timely response and troubleshooting, and improves the intelligent management capability of the system. The amplified signal of the antenna enhances transmission stability and reduces the risk of signal loss, making it suitable for various installation environments. As a preferred option, the wireless antenna is designed as a PCB embedded antenna, integrated on the surface of the control board, and transmits data through the 2.4GHz frequency band; the wireless module built in the control board encodes the water leakage status into a digital signal, which is transmitted to the cloud server through the antenna, and the user terminal receives the notification through the Internet protocol. In another preferred option, the antenna adopts a dipole structure, which is powered by the control board to amplify the signal strength, and reduces electromagnetic interference through a metal shielding cover. This provides a convenient monitoring method, enhances user interaction, and supports multi-device linkage. Description of Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 is an exploded view of an embodiment of the present utility model; Figure 3 is a partial sectional view of the water pipe in an embodiment of the present utility model; Specific Embodiments

[0016] An intelligent leak-proof valve according to an embodiment of the present utility model is as Figure 1-3The system includes a water pipe 1, with an inlet 11 and an outlet 12 at each end. The inlet 11 connects to an external water inlet pipe, and the outlet 12 connects to an external water outlet pipe. Both are standard threaded connections for a sealed connection. A control valve 13, a solenoid valve, is installed inside the water pipe 1 to open and close the water flow between the inlet 11 and outlet 12. The system also includes a controller 2, comprising a leakage sensor group 21, a control board 22, and an opening / closing element 23. The leakage sensor group 21 is located inside the water pipe 1, closer to the inlet 11 than the control valve 13, to prioritize the detection of abnormal water flow. The leakage sensor group 21 includes a first flow sensor 211 and a second flow sensor 212, both installed inside the water pipe 1 at a fixed distance for detection. The first and second flow sensors 211 are connected to the control board 22 via wires, transmitting real-time flow information at their respective locations to the control board 22. The control board 22 is a PCB board used to process flow data. The opening and closing component 23 is controlled by the control board 22 and connected to the control valve 13 to realize the opening and closing operation of the valve. A first mounting port 14 is provided on the wall of the water pipe 1 corresponding to the position of the first flow sensor 211, and a second mounting port 15 is provided corresponding to the position of the second flow sensor 212. The first mounting port 14 and the second mounting port 15 are circular openings. The wires of the first flow sensor 211 are led out through the first mounting port 14, and the second mounting port 15 is used to lead out the wires of the second flow sensor 212. After the wires are led out, O-ring sealing and epoxy resin potting are used to prevent short circuits of the sensors. Simultaneously, the sensors are fixed by threads and clips to prevent positional displacement within the water pipe 1. A wireless antenna (not shown in the figure) is also included. The wireless antenna (not shown in the figure) is connected to the control board 22 to amplify the wireless signal. The control board 22 transmits a signal indicating whether the water pipe is leaking to an external terminal via the wireless antenna (not shown in the figure). The terminal includes a smartphone or computer, which can receive information via an APP, mini-program, or SMS.

[0017] The working principle of the intelligent anti-leak valve is as follows: When the water pipe 1 is working normally, water flows in from the inlet port 11 and flows to the outlet port 12 through the control valve 13. The first flow sensor 211 and the second flow sensor 212 detect the flow value at their positions in real time and transmit the data to the control board 22. The control board 22 compares the flow information transmitted by the first flow sensor 211 and the second flow sensor 212 with the time difference between the two detecting the flow change to determine whether there is a leak in the water pipe 1. For example, if the time difference exceeds a preset threshold, it indicates a leak. Once a leak is detected, the control board 22 immediately controls the opening and closing component 23 to close the control valve 13 and cut off the water flow. At the same time, the control board 22 sends a leak alarm signal to the terminal through a wireless antenna (not shown in the figure) to achieve automatic response without manual intervention.

[0018] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. An intelligent leak-proof valve, comprising a water pipe, wherein both ends of the water pipe are respectively provided with an inlet port for connecting to an inlet pipe and an outlet port for connecting to an outlet pipe, and a control valve for opening and closing the flow between the inlet port and the outlet port is provided inside the water pipe, characterized in that: It also includes a controller, which includes a leakage sensor group, a control board connected to the leakage sensor group, and an opening and closing component controlled by the control board for opening and closing the control valve. The leakage sensor group is located inside the water pipe and is positioned closer to the water inlet than the control valve. The leakage sensor group is used to detect changes in the flow rate in the water pipe and, when leakage occurs, controls the opening and closing component through the control board to close the control valve.

2. The intelligent leak-proof valve according to claim 1, characterized in that: The leakage sensor group includes a first flow sensor and a second flow sensor that transmit flow velocity information at their respective locations to the control board. Both the first flow sensor and the second flow sensor are installed inside the water pipe and are spaced apart from each other.

3. The intelligent leak-proof valve according to claim 2, characterized in that: The distance between the first flow sensor and the second flow sensor is the judgment distance. The control board determines whether there is a water leak in the water pipe by receiving the flow information transmitted by the first flow sensor and the second flow sensor and the time difference between them.

4. The intelligent leak-proof valve according to claim 2, characterized in that: The water pipe is provided with a first mounting port and a second mounting port corresponding to the positions of the first flow sensor and the second flow sensor, respectively. The wires of the first flow sensor and the second flow sensor are respectively sealed in the first mounting port and the second mounting port.

5. The intelligent leak-proof valve according to any one of claims 1-4, characterized in that: It also includes a wireless antenna connected to the control board and used to amplify the wireless signal, the control board transmitting a signal to the terminal via the wireless antenna indicating whether the water pipe is leaking.

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