Urban underground pipeline leakage monitoring device

Abstract

The invention discloses an urban underground pipeline leakage monitoring device, and belongs to the technical field of pipeline leakage monitoring. Comprising a vertical plate; the mounting assemblies are slidably connected to the two sides of the vertical plate in the circumferential direction of the underground pipeline and comprise arc-shaped square pipes matched with the surface of the underground pipeline; the positioning assemblies are arranged on the two sides of the vertical plate respectively and comprise positioning rods connected to the vertical plate in a sliding mode, and the two positioning rods slide in the mutually-crossed direction; and the jacking and supporting assemblies are rotationally connected to the two sides of the vertical plate correspondingly, and each jacking and supporting assembly comprises a jacking plate used for jacking and supporting a soil layer obliquely above the underground pipeline. According to the device, the two arc-shaped square pipes are rotated to the two sides of the underground pipeline through the driving assembly, the detection assembly, namely the humidity sensor and the vibration sonar sensor, is brought into a soil layer, the detection assembly can surround the surface of the underground pipeline without large-area excavation of the soil layer around the underground pipeline, and the detection timeliness and accuracy are improved.

Description

Technical Field

[0001] This invention relates to a device for monitoring leakage in urban underground pipelines, belonging to the field of pipeline leakage monitoring technology. Background Technology

[0002] Urban underground pipeline networks are constantly expanding, undertaking important functions such as water supply and drainage. However, many underground pipelines that have been laid for many years lack built-in leakage detection devices. Due to long-term effects such as foundation settlement and corrosion, leaks are prone to occur. Moreover, leaks often progress from minor to serious. However, minor leaks are difficult to detect, and by the time serious leaks occur, it is often too late, and the cost of repair is enormous. Therefore, in order to reduce losses, it is necessary to install monitoring systems at key nodes of the pipeline network.

[0003] The simplest solution currently is to drill holes near underground pipelines and pre-bury humidity or vibration sensors. However, this solution makes it difficult to arrange multiple sensors at equal intervals on the pipeline surface. If they are only set up locally, it will lead to problems such as untimely monitoring and inaccurate monitoring structure. In addition, the existing sensor installation method requires the soil around the underground pipeline to be completely cleared to make enough space before using clamps to install the sensors on the underground pipeline. However, breaking through a large area of ​​soil layer results in high construction costs, long construction period, and great inconvenience.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a leakage monitoring device for urban underground pipelines. It solves the problem that in the traditional underground pipeline construction, it is difficult to arrange multiple sensors at equal intervals on the pipeline surface. If they are only set up locally, it will lead to untimely monitoring and inaccurate monitoring structure. Moreover, the existing sensor installation method requires the complete clearing of the soil around the underground pipeline to make enough space before using clamps to install the sensors on the underground pipeline. However, this involves breaking through a large area of ​​soil layer, resulting in high construction costs, long construction period, and great inconvenience.

[0006] The technical problem to be solved by this invention is achieved by the following technical solution: a leakage monitoring device for urban underground pipelines, comprising: Elevating board; The mounting components are slidably connected to both sides of the vertical plate along the circumferential direction of the underground pipeline, and include an arc-shaped square tube adapted to the surface of the underground pipeline. The positioning components are respectively disposed on both sides of the upright plate, and include positioning rods slidably connected to the upright plate, with the two positioning rods sliding in mutually intersecting directions; The top support assembly is rotatably connected to both sides of the vertical plate, and includes a top plate for supporting the soil layer diagonally above the underground pipeline; The drive components are rotatably connected to both sides of the upright plate, and are used to synchronously drive the arc-shaped square tube, the positioning rod and the top plate to move. The arc-shaped square tube is also equipped with a detection component for detecting leakage. The detection component includes several humidity sensors fixed at equal intervals on the inner wall of the arc-shaped square tube, and a vibration sonar sensor protruding from the surface of the arc-shaped square tube.

[0007] By adopting the above technical solution, the driving component simultaneously drives the top plate, the positioning component, and the arc-shaped square tube, so that the two arc-shaped square tubes rotate to both sides of the underground pipeline. The detection components, namely the humidity sensor and the vibration sonar sensor, can be brought into the soil layer through the arc-shaped square tubes. This allows the detection components to be surrounded on the surface of the underground pipeline without large-scale excavation of the soil layer around the underground pipeline, thereby improving the timeliness and accuracy of detection. Furthermore, since the detection component integrates a humidity sensor and a vibration sonar sensor, it can monitor pipeline leakage in real time from two dimensions: humidity changes and vibration sound. Even in complex underground environments, it can quickly and accurately capture leakage signals, reduce false alarms and missed alarms, and provide reliable data support for pipeline maintenance.

[0008] The invention is further configured such that: the mounting assembly includes a limiting sleeve fixed to the upright plate; the surface of the arc-shaped square tube is in clearance fit with the inner wall of the limiting sleeve; an arc-shaped guide groove is provided on the side of the arc-shaped square tube; a guide block that is in clearance fit with the arc-shaped guide groove is fixedly connected to the inner wall of the limiting sleeve; an arc-shaped rack is embedded at the top of the arc-shaped square tube; the curvature of the arc-shaped rack matches the curvature of the arc-shaped square tube; and the arc-shaped rack does not protrude from the arc-shaped mounting groove.

[0009] The present invention is further configured such that: the positioning component includes a sliding sleeve, two sliding sleeves are respectively fixedly connected to both sides of the upright plate, the positioning rod is slidably connected inside the sliding sleeve, and a straight toothed rack is embedded on the positioning rod.

[0010] The invention is further configured such that: the detection component also includes several springs equidistantly fixedly connected inside the arc-shaped square tube, the side of the arc-shaped square tube corresponding to the underground pipeline is open, the other end of the spring corresponds to the open side of the arc-shaped square tube and is fixedly connected to an mounting plate for installing a vibration sonar sensor, and the vibration sonar sensor protrudes from the arc-shaped square tube, and several humidity sensors are equidistantly fixed on the inner wall of the arc-shaped square tube, and the sensing end of the humidity sensor passes through the arc-shaped square tube and is flush with the side of the arc-shaped square tube.

[0011] The present invention is further configured such that an attitude sensor is fixedly connected to the upright plate.

[0012] The present invention is further configured such that: the top support assembly includes an arc-shaped groove one formed on the upright plate, an arc-shaped plate slidably connected in the arc-shaped groove one, an arc-shaped groove two formed on the arc-shaped plate, and the arc-shaped groove two being clearance-fitted with the upper side of the inner wall of the arc-shaped groove one; a guide rod slidably connected on the arc-shaped plate, the top plate being fixedly connected to the guide rod; a threaded cylinder rotatably connected on the arc-shaped plate, a screw threadedly connected in the threaded cylinder, and the upper end of the screw being connected to the bottom of the top plate.

[0013] The present invention is further configured such that: the driving component includes a rotating shaft, the rotating shaft is rotatably connected to the vertical plate, a first gear and a second gear are fixedly connected to one side of the rotating shaft, the first gear meshes with a linear rack, the second gear meshes with an arc-shaped rack, and a bevel gear that meshes with each other is fixed to the other side of the rotating shaft through the vertical plate and together with the bottom of the threaded cylinder.

[0014] The present invention is further configured such that the center of the arc-shaped groove is the axis of the rotating shaft, and hexagonal blocks are fixedly connected to both ends of the rotating shaft.

[0015] The invention is further configured such that both ends of the arc-shaped square tube, the lower end of the straight rack, and the upper end of the top plate are all designed as pointed ends.

[0016] The present invention is further configured such that the sensing end of the humidity sensor faces away from the upright plate, and the bottom of the upright plate is an arc surface that is flush with the bottom of the arc-shaped square tube.

[0017] The beneficial effects of this invention are: 1. This device is designed for the later installation of underground pipelines that have already been laid. During installation, only the soil covering the top of the pipeline needs to be excavated to expose the top of the pipeline, and the upright plate can be placed vertically. The drive component links the arc-shaped square tube, positioning rod and top plate. Without the need to fully excavate the soil layer, the detection component can be surrounded to the surface of the pipeline. This feature improves the installation efficiency of the detection component and greatly reduces the damage to the surrounding environment caused by construction. It avoids problems such as traffic blockage and ground collapse caused by large-scale excavation, significantly shortens the construction period and greatly reduces manpower and material costs. 2. After the device is installed, the two positioning rods inserted into the soil in a figure-eight shape cooperate with the arc-shaped square tube surrounding the pipeline to form a stable support structure, which effectively suppresses the horizontal displacement of the pipeline. At the same time, the top plate supporting the oblique top penetrates into the soil layer, further improving the stabilizing force applied to the pipeline and reducing the vertical displacement of the pipeline caused by factors such as foundation settlement. The three work together to effectively reduce the risk of leakage at the pipeline joint caused by displacement and improve the overall stability and service life of the pipeline. 3. The swingable design of the top plate allows it to adapt to non-standard excavation trenches generated during excavation. Before the positioning rod and the curved square tube are inserted into the soil, the top plate contacts the excavation trench. This ensures that while the positioning rod and the curved square tube are inserted into the soil, the top plate provides downward pressure to the vertical plate, allowing the curved square tube to drive the detection components to continuously contact the surface of the underground pipeline, ensuring the accuracy of the detection structure. 4. The attitude sensor monitors the device's own attitude in real time. Once it detects instability caused by factors such as soil changes or pipeline displacement, it can promptly provide feedback, facilitating a quick response from maintenance personnel. 5. The curved square tube, positioning rod, and pointed design of the top plate reduce the resistance to insertion into the soil layer and ensure smooth installation. The design of the transmission structure such as the sliding groove and gear between the components ensures precise and stable operation, improves the long-term reliability of the device in complex underground environments, and reduces maintenance costs caused by structural loosening and component damage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the arc-shaped square tube of the present invention; Figure 4 This is the present invention. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a three-dimensional structural diagram of the arc-shaped square tube of the present invention from another perspective; Figure 6 This is a schematic diagram of the right-side structure of the present invention; Figure 7 This is a schematic diagram of the exploded structure of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the present invention installed in an underground pipeline structure.

[0019] In the diagram: 1. Vertical plate; 2. Mounting assembly; 3. Detection assembly; 4. Drive assembly; 5. Top support assembly; 6. Positioning assembly; 7. Limiting sleeve; 8. Guide block; 9. Arc-shaped rack; 10. Sliding sleeve; 11. Positioning rod; 12. Linear rack; 13. Arc-shaped square tube; 14. First gear; 15. Rotating shaft; 16. Hexagonal block; 17. Second gear; 18. Arc-shaped guide groove; 19. Mounting plate; 20. Humidity sensor; 21. Attitude sensor; 22. Arc-shaped slide groove one; 23. Arc-shaped plate; 24. Arc-shaped slide groove two; 25. Top plate; 26. Screw; 27. Threaded cylinder; 28. Bevel gear; 29. ​​Guide rod; 30. Spring; 31. Vibration sonar sensor. Detailed Implementation

[0020] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0021] See Figures 1-9 As shown, the present invention provides a device for monitoring leakage in urban underground pipelines, comprising: Elevating board 1; The mounting component 2 is slidably connected to both sides of the vertical plate 1 along the circumferential direction of the underground pipe, and includes an arc-shaped square tube 13 that is adapted to and flush with the surface of the underground pipe. The positioning components 6 are respectively disposed on both sides of the upright plate 1, and include positioning rods 11 slidably connected to the upright plate 1. The two positioning rods 11 slide in mutually intersecting directions. The top support assembly 5 is rotatably connected to both sides of the vertical plate 1, and includes a top plate 25 for supporting the soil layer above the underground pipeline. The drive assembly 4 is rotatably connected to both sides of the upright plate 1, and is used to synchronously drive the arc-shaped square tube 13, the positioning rod 11 and the top plate 25 to move. The arc-shaped square tube 13 is also equipped with a detection component 3 for detecting leakage. The detection component 3 includes several humidity sensors 20 that are fixed at equal intervals on the inner side wall of the arc-shaped square tube 13, and a vibration sonar sensor 31 that protrudes from the surface of the arc-shaped square tube 13. The sensing end of the humidity sensor 20 faces away from the upright plate 1.

[0022] Both ends of the curved square tube 13, the lower end of the straight rack 12, and the upper end of the top plate 25 are all designed with pointed ends.

[0023] In use, a dedicated power cable is laid to connect the surface mains power to the underground pipeline leakage monitoring device of this application. A suitable mains power access point is found near the device installation area, and a waterproof and corrosion-resistant power cable is buried underground along a pre-planned path, connecting to the power interface inside the device's vertical plate 1. The cable is wrapped with a high-strength protective layer to prevent mechanical damage and soil corrosion during construction and long-term use. This method requires only initial investment in cable laying and protective materials, as well as a small amount of labor costs. Compared to other complex power supply technologies, it has low equipment and technical investment, and the mains power supply is stable, continuously powering the detection component 3, drive component 4, and other components. There are virtually no maintenance costs in the later stages, making it suitable for use in areas with concentrated urban underground pipe networks and easy access to mains power.

[0024] Furthermore, by driving the arc-shaped square tube 13, positioning rod 11, and top plate 25 in conjunction with the drive component 4, the detection component 3 can be wrapped around the surface of the pipeline without the need for extensive excavation of the soil layer. This feature improves the installation efficiency of the detection component 3 and greatly reduces the damage to the surrounding environment caused by construction. It avoids problems such as traffic blockage and ground subsidence caused by large-scale excavation, significantly shortens the construction cycle, and greatly reduces manpower and material costs. It enables the detection component 3 to be wrapped around the surface of the underground pipeline without extensive excavation of the soil layer around the underground pipeline, thereby improving the timeliness and accuracy of detection.

[0025] like Figure 1 , 3 As shown in Figure 5, the mounting assembly 2 includes a limiting sleeve 7 fixed on the upright plate 1, the surface of the arc-shaped square tube 13 is in clearance fit with the inner wall of the limiting sleeve 7, the side of the arc-shaped square tube 13 is provided with an arc-shaped guide groove 18, the inner wall of the limiting sleeve 7 is fixedly connected with a guide block 8 that is in clearance fit with the arc-shaped guide groove 18, and the top of the arc-shaped square tube 13 is provided with an arc-shaped rack 9, the curvature of the arc-shaped rack 9 matches the curvature of the arc-shaped square tube 13, and the arc-shaped rack 9 does not protrude from the arc-shaped mounting groove. The limiting sleeve 7 and the arc-shaped square tube 13 are used to surround the detection component 3 around the pipe. The limiting sleeve 7 is fixed on both sides of the vertical plate 1 and provides sliding guidance for the arc-shaped square tube 13. The arc-shaped guide groove 18 on the side of the arc-shaped square tube 13 cooperates with the guide block 8 of the limiting sleeve 7 to ensure sliding accuracy. The arc-shaped rack 9 at the top of the arc-shaped square tube 13 meshes with the drive assembly 4. Under the action of the drive assembly 4, the arc-shaped square tube 13 rotates to both sides of the pipe, realizing the surrounding installation and detection of the detection assembly 3 around the pipe; like Figures 1 to 2 As shown, the positioning component 6 includes a sliding sleeve 10. Two sliding sleeves 10 are fixedly connected to both sides of the upright plate 1. The positioning rod 11 is slidably connected inside the sliding sleeve 10. The positioning rod 11 is rectangular and a straight toothed rack 12 is embedded on the positioning rod 11. The straight toothed rack 12 does not protrude from the strip groove. The positioning rod 11 slides within the sliding sleeve 10, and its pointed lower end facilitates insertion into the soil layer; The drive assembly 4 engages with the linear rack 12, causing the two positioning rods 11 to slide within the sliding sleeve 10 and insert obliquely downwards into the soil layer in a figure-eight pattern to position the device. Together with the arc-shaped square tube 13, this effectively reduces the risk of leakage at the pipe joint.

[0026] Specifically, the two positioning rods 11 inserted into the soil in a figure-eight shape cooperate with the arc-shaped square tube 13 surrounding the pipeline to form a stable support structure, effectively suppressing the horizontal displacement of the pipeline. At the same time, the top plate 25 supporting the pipeline from the top further penetrates into the soil, which further enhances the stabilizing force applied to the pipeline and reduces the vertical displacement of the pipeline caused by factors such as foundation settlement. The synergistic effect of the three can effectively reduce the risk of leakage at the pipeline joint caused by displacement and improve the overall stability and service life of the pipeline.

[0027] like Figure 1 , 3 As shown in Figure 5, the detection component 3 includes several springs 30 that are equidistantly fixed inside the arc-shaped square tube 13. The side of the arc-shaped square tube 13 corresponding to the underground pipeline is open. The other end of the spring 30 corresponds to the open side of the arc-shaped square tube 13 and is fixedly connected to a mounting plate 19 for installing a vibration sonar sensor 31. The vibration sonar sensor 31 protrudes from the arc-shaped square tube 13. Several humidity sensors 20 are equidistantly fixed on the inner wall of the arc-shaped square tube 13. The sensing end of the humidity sensor 20 passes through the arc-shaped square tube 13 and is flush with the side of the arc-shaped square tube 13. It should be noted that, in order to cooperate with the use of the vibration sonar sensor 31 and the humidity sensor 20, a data processing module (not shown in the figure) is also provided in this device.

[0028] A spring 30 installed inside the arc-shaped square tube 13 pushes the mounting plate 19, causing the vibration sonar sensor 31 to fit tightly against the pipe surface. When the pipe leaks, the vibration and sound signals generated by the water flow impacting the pipe wall are captured by the vibration sonar sensor 31 and converted into electrical signals. Simultaneously, the sensing end of the humidity sensor 20 monitors the soil moisture around the pipe in real time. Once the soil moisture changes due to leakage, the humidity sensor 20 will also generate a corresponding change in electrical signal. The signals collected by the two types of sensors are preprocessed and then transmitted to the built-in data processing module of the device for analysis and judgment. The vibration sonar sensor 31 and the humidity sensor 20 use wired transmission. The device has a mechanism to dynamically adjust the alarm thresholds of the vibration sonar sensor 31 and the humidity sensor 20 based on factors such as pipe type, service life, and environmental parameters, thereby improving detection accuracy. The device incorporates a signal separation algorithm into its data processing module, using a machine learning model to jointly analyze data from two types of sensors, distinguishing between environmental interference and actual leakage signals.

[0029] Meanwhile, a spectrum analysis function is added to filter out vibration signals that are not related to leakage by comparing the vibration spectrum of the normal environment with the real-time monitoring spectrum. For the humidity sensor 20, it is considered to set up a multi-layer humidity monitoring area to avoid false alarms caused by local environmental humidity changes.

[0030] like Figure 1 As shown, an attitude sensor 21 is fixedly connected to the upright plate 1.

[0031] When the device tilts or shifts due to factors such as soil settlement or pipeline displacement, the attitude sensor 21 detects the change in attitude parameters and transmits the signal to the data processing module. The data processing module performs a comprehensive analysis of the signals transmitted by the vibration sonar sensor 31, humidity sensor 20, and attitude sensor 21 based on preset thresholds and algorithms to determine whether the pipeline is leaking, the degree of leakage, and whether the device is operating normally. The monitoring results and status information are then remotely transmitted to the monitoring center via the communication module, providing data support for the operation and maintenance management of urban underground pipelines.

[0032] like Figure 1 , 7 As shown in Figure -8, the top support assembly 5 includes an arc-shaped groove 22 formed on the vertical plate 1. An arc-shaped plate 23 is slidably connected in the arc-shaped groove 22. An arc-shaped groove 24 is formed on the top of the arc-shaped plate 23, and the arc-shaped groove 24 is clearance-fitted with the upper side of the inner wall of the arc-shaped groove 22 so that the arc-shaped plate 23 can slide in the arc-shaped groove 22. A guide rod 29 is slidably connected to the arc-shaped plate 23 in a direction perpendicular to the arc-shaped plate 23. The top plate 25 is fixedly connected to the guide rod 29. A threaded cylinder 27 is also rotatably connected to the arc-shaped plate 23. A screw 26 is threadedly connected to the threaded cylinder 27. The upper end of the screw 26 is connected to the bottom of the top plate 25.

[0033] The angle of the top plate 25 can be adjusted by sliding the arc plate 23 within the arc groove 22.

[0034] The pointed design at the top of the top plate 25 facilitates insertion into the soil layer. When the drive component 4 drives the threaded cylinder 27 to rotate, the screw 26 pushes the top plate 25 to insert obliquely upward into the soil layer above the pipe. In conjunction with the positioning component 6, it restricts the displacement of the pipe and increases the downward pressure of the vertical plate 1 on the pipe, ensuring that the device is in close contact with the pipe.

[0035] Specifically, the swingable design of the top plate 25 allows it to adapt to non-standard excavation trenches generated during excavation. Before the positioning rod 11 and the curved square tube 13 are inserted into the soil, the top plate 25 contacts the excavation trench. This ensures that while the positioning rod 11 and the curved square tube 13 are inserted into the soil, the top plate 25 provides downward pressure to the vertical plate 1, allowing the curved square tube 13 to drive the detection component 3 to continuously contact the surface of the underground pipeline, ensuring the accuracy of the detection structure. like Figure 1 and Figure 7 As shown, the drive assembly 4 includes a rotating shaft 15, which is rotatably connected to the vertical plate 1. A first gear 14 and a second gear 17 are fixedly connected to one side of the rotating shaft 15. The first gear 14 meshes with a linear rack 12, and the second gear 17 meshes with an arc-shaped rack 9. On the other side of the rotating shaft 15, a bevel gear 28 that meshes with each other is fixedly installed through the vertical plate 1 and together with the bottom of the threaded cylinder 27.

[0036] The center of the arc-shaped slide 22 is the axis of the rotating shaft 15. This design allows the two bevel gears 28 to remain engaged while the angle of the top plate 25 is adjusted. Hexagonal blocks 16 are fixedly connected to both ends of the rotating shaft 15, thereby increasing the force application points of the rotating shaft 15 and making it easier to rotate the rotating shaft 15.

[0037] During the installation phase, the operator uses the adapter tool to act on the hexagonal blocks 16 at both ends of the rotating shaft 15 of the drive assembly 4, causing the rotating shaft 15 to rotate. The first gear 14 on the rotating shaft 15 meshes with the linear rack 12 of the positioning rod 11 in the positioning assembly 6, causing the positioning rod 11 to move obliquely downward along the sliding sleeve 10, and finally insert into the soil layer to form a figure-eight support structure. At the same time, the second gear 17 meshes with the arc rack 9 at the top of the arc square tube 13 in the mounting assembly 2, driving the arc square tube 13 to rotate to both sides of the underground pipeline along the trajectory formed by the guide block 8 of the limiting sleeve 7 and its own arc guide groove 18, with the underground pipeline as the axis. Furthermore, the rotating shaft 15, driven by the bevel gear 28, rotates the threaded cylinder 27 of the top support assembly 5, and the screw 26 pushes the top plate 25 to move obliquely upward and insert it into the soil layer obliquely above the pipeline. Thus, the positioning assembly 6, the installation assembly 2, and the top support assembly 5 work together to complete the installation of the device and the secure fixing of the pipeline.

[0038] Workflow: When installing this device, excavate the soil covering the underground pipeline to expose the upper side of the underground pipeline. Place the vertical plate 1 vertically on the upper side of the underground pipeline and rotate the two top support components 5 so that the top plate 25 of the top support component 5 contacts the soil layer diagonally above the underground pipeline. By simultaneously driving the top plate 25, positioning component 6, and arc-shaped square tube 13 through the driving component 4, the two arc-shaped square tubes 13 are rotated to both sides of the underground pipeline. The detection component 3 can be brought into the soil layer through the arc-shaped square tube 13, so as to achieve the goal of surrounding the underground pipeline surface with the detection component 3 without large-scale excavation of the soil layer around the underground pipeline, thereby improving the timeliness and accuracy of detection. When the drive component 4 rotates, the two positioning rods 11, which are distributed in an X shape, gradually insert into the soil layer. After the two positioning rods 11 are inserted into the soil layer, they are distributed in a figure-eight shape, which can locate the position of the device. The two positioning rods 11, together with the two arc-shaped square tubes 13, can improve the stability of the underground pipeline, control the displacement of the underground pipeline, and reduce the probability of leakage at the pipeline interface. At the same time, the two top plates 25 gradually penetrate into the soil above, which can, on the one hand, work with the positioning rod 11 to further improve the stability of the device installed on the underground pipeline, and on the other hand, when the top plates 25 are inserted into the soil above, they can increase the downward pressure of the vertical plate 1, so that the vertical plate 1 and the arc-shaped square tube 13 can continue to be in contact with the surface of the underground pipeline. The detection component 3 can determine whether underground pipes are leaking by detecting humidity, vibration, and sound.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring leakage in urban underground pipelines, characterized in that, include: Elevating board (1); The mounting components (2) are slidably connected to both sides of the vertical plate (1) along the circumferential direction of the underground pipeline, and include an arc-shaped square tube (13) adapted to the surface of the underground pipeline. The positioning components (6) are respectively disposed on both sides of the upright plate (1) and include positioning rods (11) slidably connected to the upright plate (1). The two positioning rods (11) slide in mutually intersecting directions. The top support assembly (5) is rotatably connected to both sides of the vertical plate (1) and includes a top plate (25) for supporting the soil layer above the underground pipeline. The drive assembly (4) is rotatably connected to both sides of the upright plate (1) to synchronously drive the arc-shaped square tube (13), the positioning rod (11) and the top plate (25) to move. The arc-shaped square tube (13) is also equipped with a detection component (3) for detecting leakage. The detection component (3) includes several humidity sensors (20) fixed at equal intervals on the inner side wall of the arc-shaped square tube (13) and a vibration sonar sensor (31) protruding from the surface of the arc-shaped square tube (13).

2. The urban underground pipeline leakage monitoring device according to claim 1, characterized in that: The mounting assembly (2) includes a limiting sleeve (7) fixed on the upright plate (1). The surface of the arc-shaped square tube (13) is in clearance fit with the inner wall of the limiting sleeve (7). An arc-shaped guide groove (18) is provided on the side of the arc-shaped square tube (13). A guide block (8) that is in clearance fit with the arc-shaped guide groove (18) is fixedly connected to the inner wall of the limiting sleeve (7). An arc-shaped rack (9) is embedded at the top of the arc-shaped square tube (13). The arc of the arc-shaped rack (9) matches the arc of the arc-shaped square tube (13), and the arc-shaped rack (9) does not protrude from the arc-shaped mounting groove.

3. The urban underground pipeline leakage monitoring device according to claim 2, characterized in that: The positioning component (6) includes a sliding sleeve (10), two sliding sleeves (10) are fixedly connected to both sides of the upright plate (1), the positioning rod (11) is slidably connected inside the sliding sleeve (10), and a straight rack (12) is embedded on the positioning rod (11).

4. The urban underground pipeline leakage monitoring device according to claim 3, characterized in that: The detection component (3) also includes several springs (30) that are fixedly connected at equal intervals inside the arc-shaped square tube (13). The side of the arc-shaped square tube (13) corresponding to the underground pipeline is open. The other end of the spring (30) is connected to the open side of the arc-shaped square tube (13) and a mounting plate (19) for installing a vibration sonar sensor (31) is fixedly connected. The vibration sonar sensor (31) protrudes from the arc-shaped square tube (13). Several humidity sensors (20) are fixed at equal intervals on the inner wall of the arc-shaped square tube (13). The sensing end of the humidity sensor (20) passes through the arc-shaped square tube (13) and is flush with the side of the arc-shaped square tube (13).

5. The urban underground pipeline leakage monitoring device according to claim 1, characterized in that: An attitude sensor (21) is also fixedly connected to the upright plate (1).

6. The urban underground pipeline leakage monitoring device according to claim 4, characterized in that: The top support assembly (5) includes an arc-shaped groove (22) opened on the upright plate (1), an arc-shaped plate (23) is slidably connected in the arc-shaped groove (22), an arc-shaped groove (24) is opened on the arc-shaped plate (23), and the arc-shaped groove (24) is clearance-fitted with the upper side of the inner wall of the arc-shaped groove (22), a guide rod (29) is slidably connected on the arc-shaped plate (23), the top plate (25) is fixedly connected to the guide rod (29), a threaded cylinder (27) is rotatably connected on the arc-shaped plate (23), a screw (26) is threadedly connected in the threaded cylinder (27), and the upper end of the screw (26) is connected to the bottom of the top plate (25).

7. A leakage monitoring device for urban underground pipelines according to claim 6, characterized in that: The drive assembly (4) includes a rotating shaft (15), which is rotatably connected to the vertical plate (1). A first gear (14) and a second gear (17) are fixedly connected to one side of the rotating shaft (15). The first gear (14) meshes with a linear rack (12), and the second gear (17) meshes with an arc rack (9). The other side of the rotating shaft (15) passes through the vertical plate (1) and is fixed together with the bottom of the threaded cylinder (27) with bevel gears (28) that mesh with each other.

8. The urban underground pipeline leakage monitoring device according to claim 7, characterized in that: The center of the arc-shaped groove (22) is the axis of the rotating shaft (15), and hexagonal blocks (16) are fixedly connected to both ends of the rotating shaft (15).

9. A leakage monitoring device for urban underground pipelines according to claim 6, characterized in that: Both ends of the arc-shaped square tube (13), the lower end of the straight rack (12), and the upper end of the top plate (25) are all designed with pointed ends.

10. A leakage monitoring device for urban underground pipelines according to claim 1, characterized in that: The sensing end of the humidity sensor (20) faces away from the upright plate (1), and the bottom of the upright plate (1) is an arc surface that is flush with the bottom of the arc-shaped square tube (13).

Images