Water supply network leakage detection device based on internet of things

Abstract

The utility model discloses a kind of water supply pipe network leakage detection device based on internet of things, including shell, the lower portion of shell is detachably connected with permanent magnet fixing seat by connecting sleeve, permanent magnet fixing seat lower end surface is equipped with the arc-shaped opening that coincides with the outer diameter of water supply pipeline;The lower end of shell is elastically connected with noise sensor, and noise sensor is slidably installed in the inner wall of connecting sleeve by telescopic head, and compression spring is connected between telescopic head and connecting sleeve, and when spring is in natural state, the lower end surface of noise sensor is not higher than the vertex of arc-shaped opening;The top of shell is separately provided with 4G antenna and LoRa antenna, and noise sensor is connected with 4G antenna and LoRa antenna by signal processing circuit arranged in the inside of shell;The utility model increases the contact area of permanent magnet fixing seat and pipeline surface, so that the contact between detection device and pipeline is more stable, and avoids the rigid collision between detection device and pipeline to affect detection accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline leakage detection technology, specifically a water supply network leakage detection device based on the Internet of Things. Background Technology

[0002] Leaks in water supply pipelines not only waste water resources, but also cause a drop in local pipeline pressure, affecting users' normal water use, and allow pollutants to enter the pipeline, affecting water supply safety. Therefore, it is necessary to locate the leak as quickly and accurately as possible and carry out emergency repairs.

[0003] Pipeline noise monitoring is one of the most direct and effective methods for detecting leaks in water supply pipelines. When a water pipe leaks, the water sprays out and vibrates and makes noise due to friction with the pipe. This sound travels along the pipe. By placing noise monitoring devices at two contact points in the pipe and recording the time difference between the arrival of the leak sound at the two points, the location of the leak can be accurately calculated. For example, Chinese utility model patent CN210893568U discloses a noise monitoring instrument, including a lower flange, a strong magnetic base, a circuit board, and a noise collector. The noise collector includes a mass block with a receiving groove and a screw mounting hole; a piezoelectric ceramic plate disposed inside the receiving groove and having an assembly hole; an isolation sleeve fitted into the assembly hole; and screws that connect to the mass block and the piezoelectric ceramic plate through the screw mounting hole and the isolation sleeve. The lower flange has a docking post at the top for use with the screw and the isolation sleeve, and a connecting hole at the bottom for installation with the strong magnetic base. The docking post cooperates with the mass block to press the upper and lower surfaces of the piezoelectric ceramic plate tightly. The system utilizes components such as a noise acquisition unit, circuit board, strong magnetic base, and lower flange to achieve automatic, effective, and accurate acquisition of pipeline noise signals, thereby improving the convenience of pipeline noise signal acquisition.

[0004] However, similar devices typically use a strong magnetic base to directly install the noise monitor at any suitable location on the pipeline. Since the surface of the pipeline is usually a cylindrical curved structure, while the strong magnetic base is usually a planar structure, the contact area between the base and the pipeline surface is limited, resulting in unstable device fixation. Especially when the pipeline vibrates, the base of the device may have a rigid collision with the pipeline, interfering with the sensor's detection results. Utility Model Content

[0005] This invention proposes an Internet of Things-based water supply network leakage detection device, aiming to solve the problem that existing noise monitoring-type pipeline leakage detection devices are not fixed to the pipeline, affecting the detection results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The IoT-based water supply network leakage detection device includes a housing, and a permanent magnet fixing base is detachably connected to the bottom of the housing through a connecting sleeve. The permanent magnet fixing base is a hollow cylindrical structure, and its lower end face has an arc-shaped opening that matches the outer diameter of the water supply pipe.

[0008] A noise sensor is elastically connected to the lower end of the housing. The noise sensor is slidably mounted on the inner wall of the connecting sleeve via a telescopic head. A compression spring is connected between the telescopic head and the connecting sleeve. When the spring is in its natural state, the lower end face of the noise sensor is not higher than the apex of the arc-shaped opening.

[0009] The top of the housing is equipped with a 4G antenna and a LoRa antenna, respectively. The noise sensor is connected to the 4G antenna and the LoRa antenna through a signal processing circuit located inside the housing.

[0010] Preferably, the arc-shaped opening includes a pair of first arc-shaped openings and a pair of second arc-shaped openings. The lower end faces of the pair of first arc-shaped openings are located on a cylindrical surface, and the lower end faces of the pair of second arc-shaped openings are located on another cylindrical surface. The arc radius of the first arc-shaped opening is greater than the arc radius of the second arc-shaped opening, and the axes of the first arc-shaped opening and the second arc-shaped opening are perpendicular to each other.

[0011] Preferably, the outer wall of the connecting sleeve is provided with external threads, and the inner wall of the permanent magnet fixing seat is provided with internal threads, and the connecting sleeve and the permanent magnet fixing seat are detachably connected by threads.

[0012] Preferably, a support plate is provided on the upper part of the connecting sleeve, a top rod is connected to the top of the telescopic head, the top rod passes through the support plate and slides with the support plate, a limit plate is connected to one end of the top rod extending out of the top of the support plate, a compression spring is fitted on the outer wall of the top rod, the upper end of the compression spring contacts the lower end face of the support plate, and the lower end of the compression spring contacts the upper end face of the telescopic head.

[0013] Preferably, a damping pad is installed on the inner wall of the support plate, and the damping pad is damped in conjunction with the outer wall of the top rod.

[0014] Preferably, it also includes an electromagnet, which is disposed inside the housing and located directly above the permanent magnet fixing base. A control switch is connected to the electromagnet, and the direction of the electromagnetic field of the electromagnet is opposite to the direction of the magnetic field of the permanent magnet fixing base.

[0015] Preferably, it also includes a protective cover, the inner wall of which is provided with a clip, and the outer wall of the permanent magnet fixing base is provided with a slot that matches the clip. The protective cover is snapped onto the outer wall of the permanent magnet fixing base through the clip and the slot.

[0016] Preferably, the bottom wall of the protective cover is provided with an upwardly protruding sensor protection seat, and the top of the sensor protection seat is provided with a flexible pad. When the protective cover is snapped onto the outer wall of the permanent magnet fixing seat, the flexible pad contacts the lower end face of the noise sensor.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention can achieve at least the following technical effects:

[0019] 1. This utility model has an arc-shaped opening below the permanent magnet fixing base that matches the outer diameter of the water supply pipe, which increases the contact area between the permanent magnet fixing base and the pipe surface, making the contact between the detection device and the pipe more stable and avoiding rigid collisions between the detection device and the pipe that would affect the accuracy of the detection.

[0020] 2. The permanent magnet mounting base of this utility model is provided with two pairs of arc-shaped openings with different inner diameter specifications, which can be used to fit two different outer diameter pipes. At the same time, the permanent magnet mounting base and the housing of the detection device are detachably connected by threads. Therefore, a detection device can be equipped with permanent magnet mounting bases of different specifications, which further increases the applicability of this device.

[0021] 3. The noise sensor of this utility model is elastically connected to the housing of the device, which allows the noise sensor to maintain close contact with the outer wall of the pipe, further improving the accuracy of detection.

[0022] 4. An electromagnet is installed above the permanent magnet fixing base. When the electromagnet is energized, it generates a magnetic field in the opposite direction to that of the permanent magnet fixing base, which makes it easy to remove the detection device from the surface of the pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a cross-sectional structural diagram of the permanent magnet fixing base and connecting sleeve of this utility model.

[0025] Figure 3 This is a schematic diagram showing the connection relationship between the permanent magnet fixing base, connecting sleeve and protective cover of this utility model.

[0026] Figure 4 This is a schematic diagram of the internal structure of the connecting sleeve of this utility model.

[0027] Figure 5 This is a diagram of the detection system of this utility model.

[0028] In the diagram: 1. Housing; 2. Protective cover; 201. Sensor protection seat; 202. Clip; 203. Flexible pad; 3. Control switch; 4. LoRa antenna; 5. 4G antenna; 6. Satellite communication antenna; 7. Connecting sleeve; 8. Noise sensor; 9. Permanent magnet mounting base; 901. First arc-shaped opening; 902. Second arc-shaped opening; 903. Slot; 10. Support plate; 11. Limiting plate; 12. Damping pad; 13. Compression spring; 14. Top rod; 15. Telescopic head; 16. Electromagnet; 17. LoRa gateway; 18. 4G base station; 19. Cloud server; 20. Monitoring platform. Detailed Implementation

[0029] The present invention will be further explained below with reference to specific implementation examples.

[0030] Please see Figure 1-5 This utility model proposes a water supply network leakage detection device based on the Internet of Things, including a housing 1. A permanent magnet fixing seat 9 is detachably connected to the bottom of the housing 1 through a connecting sleeve 7. The permanent magnet fixing seat 9 is a hollow cylindrical structure with an arc-shaped opening on its lower end face that matches the outer diameter of the water supply pipe.

[0031] A noise sensor 8 is elastically connected to the lower end of the housing 1. The noise sensor 8 is slidably mounted on the inner wall of the connecting sleeve 7 via a telescopic head 15. A compression spring 13 is connected between the telescopic head 15 and the connecting sleeve 7. When the spring 13 is in its natural state, the lower end face of the noise sensor 8 is not higher than the apex of the arc-shaped opening.

[0032] The top of the housing 1 is provided with a 4G antenna 5 and a LoRa antenna 4 respectively. The noise sensor 8 is connected to the 4G antenna 5 and the LoRa antenna 4 through a signal processing circuit provided inside the housing 1.

[0033] like Figure 1-3 As shown, during use, the permanent magnet fixing base 9 of this device is adsorbed onto the outer wall of the metal pipe. The inner diameter of the arc-shaped opening matches the outer diameter of the pipe, so that the lower end face of the arc-shaped opening is completely in contact with the outer wall of the pipe. This increases the contact area between the permanent magnet fixing base 9 and the outer wall of the pipe, allowing the detection device to be more firmly adsorbed onto the outer wall of the pipe. This avoids the problem of unstable device fixing and rigid collision with the pipe affecting the accuracy of detection.

[0034] like Figure 4As shown, the noise sensor 8 is elastically connected to the housing 1 via the telescopic head 15. Under the support of the compression spring 13, the noise sensor 8 maintains close contact with the outer wall of the pipe at all times, improving the detection accuracy. The maximum elastic force generated by the compression spring 13 on the telescopic head 15 should be controlled within 5% of the magnetic attraction force of the permanent magnet fixing seat 9. This is to avoid excessive contact pressure between the noise sensor 8 and the outer wall of the pipe, which would affect the detection accuracy, and also to avoid the support force of the compression spring 13 offsetting the attraction force of the permanent magnet fixing seat 9.

[0035] In this embodiment, the noise sensor 8 can be a voice coil sensor or a piezoelectric ceramic sensor. The noise sensor 8 converts the mechanical wave signal generated by the pipe leak into an electrical signal. After processing by the signal processing circuit located inside the housing 1, the signal is transmitted via the 4G antenna 5. Figure 5 As shown, the signal data of all detection devices in the pipeline system are transmitted through 4G base station 18 and aggregated to cloud server 19. Cloud server 19 calculates and analyzes (such as calculating the location of the leak point based on the time difference of the noise detected at both ends of the pipeline) and feeds back the leak point situation to monitoring platform 20. Staff can then learn about the distribution of leak points in the entire pipeline system through monitoring platform 20.

[0036] To adapt to different network environments, this testing device is also equipped with a LoRa antenna 4. In environments where 4G wireless signals are weak, the device utilizes the advantages of LoRa wireless communication technology, such as its ultra-long transmission distance and low power consumption, to transmit the signal to the LoRa gateway via the LoRa antenna 4, and then to the 4G base station via the LoRa gateway.

[0037] As a backup, this detection device is also equipped with a satellite communication antenna 6, which uses GPS or Beidou satellite communication system to transmit signals.

[0038] In this embodiment, the arc-shaped opening is further configured such that it includes a pair of first arc-shaped openings 901 and a pair of second arc-shaped openings 902. The lower end faces of the pair of first arc-shaped openings 901 are located on a cylindrical surface, and the lower end faces of the pair of second arc-shaped openings 902 are located on another cylindrical surface. The arc radius of the first arc-shaped opening 901 is greater than the arc radius of the second arc-shaped opening 902, and the axes of the first arc-shaped opening 901 and the second arc-shaped opening 902 are perpendicular to each other.

[0039] Please refer to details. Figure 2 , Figure 3By setting first arc-shaped openings 901 and second arc-shaped openings 902 with different radius specifications, it is possible to select whether a pair of first arc-shaped openings 901 or a pair of second arc-shaped openings 902 are in contact with the outer wall of the pipe, depending on the outer diameter specification of the pipe. The arc radius (inner diameter) of the first arc-shaped opening 901 and the second arc-shaped opening 902 is set according to the commonly used outer diameter specifications of the pipe. For example, the arc radius of the first arc-shaped opening 901 is set to 254mm, corresponding to the outer diameter of DN500 steel pipe (508mm), and the arc radius of the second arc-shaped opening 902 can be set to 162.5mm, corresponding to the outer diameter of DN300 steel pipe (325mm).

[0040] In this embodiment, the outer wall of the connecting sleeve 7 is provided with an external thread, and the inner wall of the permanent magnet fixing seat 9 is provided with an internal thread. The connecting sleeve 7 and the permanent magnet fixing seat 9 are detachably connected by the thread.

[0041] The arc-shaped opening of the permanent magnet fixing seat 9 can be set to various different specifications according to the common pipe outer diameter specifications. Each permanent magnet fixing seat 9 is provided with two different specifications of arc-shaped opening (not limited to the first arc-shaped opening 901 and the second arc-shaped opening 902 mentioned above). When using, connect the appropriate permanent magnet fixing seat 9 as needed.

[0042] In this embodiment, the upper part of the connecting sleeve 7 is provided with a support plate 10, the top of the telescopic head 15 is connected with a push rod 14, the push rod 14 passes through the support plate 10 and slides with the support plate 10, one end of the push rod 14 extending out of the top of the support plate 10 is connected to a limit plate 11, the compression spring 13 is fitted on the outer wall of the push rod 14, the upper end of the compression spring 13 contacts the lower end face of the support plate 10, and the lower end of the compression spring 13 contacts the upper end face of the telescopic head 15.

[0043] like Figure 4 As shown, the compression spring 13 presses down on the telescopic head 15 via the push rod 14, causing the noise sensor 8 at the lower end of the telescopic head 15 to come into close contact with the outer wall of the pipe.

[0044] In this embodiment, the inner wall of the support plate 10 is equipped with a damping pad 12, and the damping pad 12 is damped in conjunction with the outer wall of the top rod 14.

[0045] By setting up a damping pad 12, the frictional resistance between the damping pad 12 and the push rod 14 can absorb some of the impact force when the pipeline vibrates violently (such as when water hammer occurs in the pipeline), thus preventing damage to the noise sensor 8.

[0046] This embodiment is further configured to include an electromagnet 16, which is disposed inside the housing 1 and located directly above the permanent magnet fixing base 9. A control switch 3 is connected to the electromagnet 16, and the direction of the electromagnetic field of the electromagnet 16 is opposite to the direction of the magnetic field of the permanent magnet fixing base 9.

[0047] When it is necessary to remove the detection device from the outer wall of the pipe, turning on the control switch 3 will enable the electromagnet 16 to be powered on and generate a magnetic field opposite to that of the permanent magnet mounting base 9, thereby counteracting the magnetic attraction of the permanent magnet mounting base 9, and thus the detection device can be removed from the outer wall of the pipe without the aid of external force.

[0048] This embodiment is further configured to include a protective cover 2, the inner wall of which is provided with a clip head 202, and the outer wall of the permanent magnet fixing base 9 is provided with a slot 903 that matches the clip head 202. The protective cover 2 is snapped onto the outer wall of the permanent magnet fixing base 9 through the clip head 202 and the slot 903.

[0049] By providing a protective cover 2, the noise sensor 8 can be protected during the transportation and storage of the detection device.

[0050] In this embodiment, the bottom wall of the protective cover 2 is provided with an upwardly protruding sensor protection seat 201, and the top of the sensor protection seat 201 is provided with a flexible pad 203. When the protective cover 2 is snapped onto the outer wall of the permanent magnet fixing seat 9, the flexible pad 203 contacts the lower end face of the noise sensor 8.

[0051] By setting a sensor protection seat 201 with a flexible pad 203 to hold the noise sensor in place, damage caused by external forces during the transportation and storage of the detection device can be further avoided.

[0052] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water supply network leakage detection device based on the Internet of Things, characterized in that, Includes a housing (1), and a permanent magnet fixing seat (9) is detachably connected to the bottom of the housing (1) via a connecting sleeve (7). The permanent magnet fixing seat (9) is a hollow cylindrical structure, and its lower end face has an arc-shaped opening that matches the outer diameter of the water supply pipe. A noise sensor (8) is elastically connected to the lower end of the housing (1). The noise sensor (8) is slidably installed on the inner wall of the connecting sleeve (7) via a telescopic head (15). A compression spring (13) is connected between the telescopic head (15) and the connecting sleeve (7). When the spring (13) is in its natural state, the lower end face of the noise sensor (8) is not higher than the apex of the arc-shaped opening. The top of the housing (1) is provided with a 4G antenna (5) and a LoRa antenna (4), and the noise sensor (8) is connected to the 4G antenna (5) and the LoRa antenna (4) through a signal processing circuit provided inside the housing (1).

2. The water supply network leakage detection device based on the Internet of Things according to claim 1, characterized in that, The arc-shaped opening includes a pair of first arc-shaped openings (901) and a pair of second arc-shaped openings (902). The lower end faces of the pair of first arc-shaped openings (901) are located on a cylindrical surface, and the lower end faces of the pair of second arc-shaped openings (902) are located on another cylindrical surface. The arc radius of the first arc-shaped opening (901) is greater than the arc radius of the second arc-shaped opening (902). The axes of the first arc-shaped opening (901) and the second arc-shaped opening (902) are perpendicular to each other.

3. The water supply network leakage detection device based on the Internet of Things according to claim 1, characterized in that, The outer wall of the connecting sleeve (7) is provided with external threads, and the inner wall of the permanent magnet fixing seat (9) is provided with internal threads. The connecting sleeve (7) and the permanent magnet fixing seat (9) are detachably connected by threads.

4. The water supply network leakage detection device based on the Internet of Things according to claim 1, characterized in that, The upper part of the connecting sleeve (7) is provided with a support plate (10), and the top of the telescopic head (15) is connected with a top rod (14). The top rod (14) passes through the support plate (10) and slides with the support plate (10). One end of the top rod (14) extending out of the top of the support plate (10) is connected to a limit plate (11). The compression spring (13) is fitted on the outer wall of the top rod (14). The upper end of the compression spring (13) contacts the lower end face of the support plate (10), and the lower end of the compression spring (13) contacts the upper end face of the telescopic head (15).

5. The water supply network leakage detection device based on the Internet of Things according to claim 4, characterized in that, The inner wall of the support plate (10) is equipped with a damping pad (12), which is damped in conjunction with the outer wall of the top rod (14).

6. The water supply network leakage detection device based on the Internet of Things according to claim 1, characterized in that, It also includes an electromagnet (16), which is disposed inside the housing (1) and located directly above the permanent magnet fixing base (9). A control switch (3) is connected to the electromagnet (16), and the direction of the electromagnetic field of the electromagnet (16) is opposite to the direction of the magnetic field of the permanent magnet fixing base (9).

7. The water supply network leakage detection device based on the Internet of Things according to claim 1, characterized in that, It also includes a protective cover (2), the inner wall of which is provided with a clip (202), and the outer wall of the permanent magnet fixing seat (9) is provided with a slot (903) that matches the clip (202). The protective cover (2) is snapped onto the outer wall of the permanent magnet fixing seat (9) through the clip (202) and the slot (903).

8. A water supply network leakage detection device based on the Internet of Things according to claim 7, characterized in that, The bottom wall of the protective cover (2) is provided with an upwardly protruding sensor protection seat (201), and the top of the sensor protection seat (201) is provided with a flexible pad (203). When the protective cover (2) is snapped onto the outer wall of the permanent magnet fixing seat (9), the flexible pad (203) contacts the lower end face of the noise sensor (8).

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