Auxiliary pipe network pressure monitor for three-dimensional pipeline system

Abstract

The invention relates to the technical field of pipe network pressure monitoring devices, in particular to a three-dimensional pipeline system assisted pipe network pressure monitor which comprises a buffer pipe, fixing assemblies used for stable detection are arranged on the outer side of the buffer pipe, and the two fixing assemblies are symmetrically arranged on the outer side of the buffer pipe. An outer detection mechanism used for detecting the pipe diameter state is arranged on the outer side of the buffer pipe, an inner detection mechanism used for detecting the pressure state is arranged at the upper end of the buffer pipe, and the sealing block can accurately simulate the actual working condition that the pipe diameter becomes small through the graded opening and closing design, so that pressure change tracking under the dynamic working condition is achieved, and the sealing effect is good. Whether the pressure abnormity is caused by the pipeline fault is judged by combining the fluid mechanics law, and the pain point that normal pressure fluctuation and leakage fault pressure change cannot be distinguished in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of pipeline pressure monitoring devices, specifically a three-dimensional pipeline system-assisted pipeline pressure monitoring instrument. Background Technology

[0002] In the field of pipeline pressure monitoring, existing monitoring equipment mostly relies on a single pressure sensor to collect data, lacking a collaborative verification mechanism related to flow velocity. This makes it easy for water flow disturbances and installation deviations to cause measurement errors, and it is difficult to distinguish between "normal pressure fluctuations" and "pressure changes due to leakage faults," resulting in a high false alarm rate.

[0003] Existing equipment has limited detection coverage, either only capable of axial linear detection of pipelines or only able to monitor localized circumferential areas, easily creating blind spots. Furthermore, dust and impurities deposited on the pipeline's outer wall can easily obscure the sensor detection unit, further reducing detection accuracy. In addition, the existing monitoring instruments suffer from insufficient stability of their fixed structure, easily experiencing relative displacement with the pipeline after installation, leading to a shift in the detection benchmark. They also cannot simulate actual working conditions such as "reduced pipe diameter," making it difficult to coordinate detection with pipeline maintenance operations and impacting pipeline network operation and maintenance efficiency. Therefore, we propose a three-dimensional pipeline system-assisted pipeline pressure monitoring instrument. Summary of the Invention

[0004] To overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a three-dimensional pipeline system-assisted pipeline pressure monitoring instrument.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a three-dimensional pipeline system-assisted pipeline pressure monitoring instrument, including a buffer tube, a fixing component for stable detection is provided on the outside of the buffer tube, two fixing components are symmetrically arranged on the outside of the buffer tube, an external detection mechanism for detecting the pipe diameter is provided on the outside of the buffer tube, and an internal detection mechanism for detecting the pressure is provided at the upper end of the buffer tube.

[0006] Preferably, the fixing component includes a base, a lower toothed plate is fixedly connected to the upper end of the base near the middle, a fixing bracket is rotatably connected to the upper end of the base, two mutually symmetrical guide bars are fixedly connected to the inner side of the fixing bracket, a threaded rod is threadedly connected to the inner side of the fixing bracket, a handle is fixedly connected to the upper end of the threaded rod, a slider is rotatably connected to the lower end of the threaded rod, the two sides of the slider are slidably connected to the two guide bars respectively, an upper toothed plate is fixedly connected to the lower end of the slider, and the slider and the upper toothed plate are engaged with the buffer tube.

[0007] Preferably, a locking block is fixedly connected to one side of the base, and an elbow locking plate is rotatably connected to one side of the fixed bracket, with the outer side of the elbow locking plate being movably connected to the locking block.

[0008] Preferably, the external detection mechanism includes a moving component for moving the detection pressure state, and the external detection mechanism includes an acoustic component for surrounding the detection pressure state.

[0009] Preferably, the movable component includes a toothed plate with multiple mounting holes on its outer side. The toothed plate is fixedly connected to two bases through the mounting holes. A mounting box is slidably connected to the outer side of the toothed plate. A first rotating shaft is rotatably connected to the inner side of the mounting box. Two first gears are fixedly connected to the outer side of the first rotating shaft. The outer side of the first gears meshes with the teeth of the toothed plate. Limiting plates are fixedly connected to both ends of the first gears. The outer side of the limiting plates is slidably connected to the toothed plate.

[0010] Preferably, a first motor is installed on one side of the mounting box, and the output shaft of the first motor is fixedly connected to a first rotating shaft. A cleaning liquid tank is fixedly connected to the other side of the mounting box, and a stirring rod is rotatably connected to the inner side of the cleaning liquid tank. One end of the stirring rod is fixedly connected to the first rotating shaft.

[0011] Preferably, an arc-shaped guide tube is fixedly connected to the upper end of the mounting box. A T-shaped groove is provided on the inner side of the arc-shaped guide tube. Multiple second motors are installed at the front end of the arc-shaped guide tube. Multiple second gears are rotatably connected to the inner side of the arc-shaped guide tube through a rotating shaft. The output shafts of the multiple second motors are fixedly connected to the corresponding second gears. Two mutually symmetrical limiting slides are provided on the outer side of the arc-shaped guide tube. The input port of the limiting slide is fixedly connected to the cleaning liquid tank through a hose. An arc-shaped rack is slidably connected to the inner side of the arc-shaped guide tube through a groove. Limiting slides are fixedly connected to both the front and rear ends of the arc-shaped rack. The outer side of the arc-shaped rack is meshed with the second gear.

[0012] Preferably, the inner side of the arc-shaped rack has a cavity, and multiple first electric telescopic rods are installed inside the cavity of the arc-shaped rack. The output shaft of the first electric telescopic rod is fixedly connected to a connecting plate. A cleaning brush is fixedly connected to the lower end of the connecting plate. The front and rear ends of the connecting plate are rotatably connected to first rotating rods via rotating shafts. A pressure tube is slidably connected to the outer side of the first rotating rod. A spring is provided inside the pressure tube. One end of the spring is fixedly connected to the first rotating rod, and the other end of the spring is fixedly connected to the pressure tube. A second rotating rod is fixedly connected to the other end of the pressure tube. A second rotating shaft is rotatably connected to the inner side of the second rotating rod. The front and rear ends of the second rotating shaft are fixedly connected to the arc-shaped rack. An acoustic sensor is provided at the upper end of the second rotating rod.

[0013] Preferably, the internal detection mechanism includes a mounting cylinder fixedly connected to a buffer tube. A second electric telescopic rod is mounted on the inner side of the mounting cylinder. A cross plate is fixedly connected to the output shaft of the second electric telescopic rod. Two third electric telescopic rods are mounted on the inner side of the mounting cylinder. A sliding plate is fixedly connected to the output shafts of the two third electric telescopic rods. The inner side of the sliding plate is slidably connected to the housing of the second electric telescopic rod. A sealing cylinder is fixedly connected to the lower end of the mounting cylinder. A guide post is fixedly connected to the inner side of the sealing cylinder. A baffle is fixedly connected to the lower end of the guide post. A blade rod is rotatably connected to the lower end of the baffle through a rotating shaft. A pressure sensor is provided on the inner side of the blade of the blade rod, and a torque sensor is provided on the inner side of the rotating shaft of the blade rod.

[0014] Preferably, eight pull rods are slidably connected to the outer side of the guide post via a sliding groove. A first clamping plate is fixedly connected to the other side of the pull rods. Two sets of connecting rods are rotatably connected to the inner side of the first clamping plate via a rotating shaft. A second clamping plate is rotatably connected to the outer side of the two sets of connecting rods via a rotating shaft. A sealing block is fixedly connected to the other side of the second clamping plate. The outer side of the sealing block is slidably connected to a sealing cylinder and a baffle, respectively. The upper ends of four of the eight pull rods are fixedly connected to a sliding plate, and the upper ends of the other four of the eight pull rods are fixedly connected to a cross plate.

[0015] Compared with the prior art, the present invention provides a three-dimensional pipeline system-assisted pipeline pressure monitoring instrument, which has the following beneficial effects:

[0016] 1. The internal detection mechanism constructs a dual-parameter collaborative detection system for pressure and torque. The pressure sensor inside the blade directly collects the real-time water flow pressure, while the torque sensor inside its shaft synchronously detects the rotational torque. By utilizing the correlation between torque and water flow velocity, the pressure data is cross-validated, avoiding measurement errors caused by water flow disturbances or installation deviations of a single sensor. The sealing block, through a graded opening and closing design, can accurately simulate the actual working condition of a smaller pipe diameter, enabling the tracking of pressure changes under dynamic working conditions. Combined with fluid mechanics principles, it determines whether the pressure anomaly is caused by a fault in the pipe itself, solving the pain point of existing technologies being unable to distinguish between normal pressure fluctuations and pressure changes due to leakage faults. The acoustic sensor of the external detection mechanism adheres to the outer wall of the pipe through a lever structure. Combined with the pretreatment function of the cleaning brush and cleaning fluid spray, it eliminates the interference of dust and impurities on the detection signal from the outer wall of the pipe, accurately capturing local pressure fluctuations caused by leaks. This complements the internal detection pressure data, further improving the accuracy of anomaly detection.

[0017] 2. The moving component of the external detection mechanism drives the mounting box to move smoothly in a straight line along the axial direction of the buffer tube through the meshing of the first gear and the toothed plate. The acoustic component drives the acoustic sensor to rotate around the circumference of the buffer tube through the meshing of the second gear and the arc-shaped rack. The coordinated axial and circumferential movements achieve full coverage detection of the outer wall of the pipeline, completely eliminating the detection blind spots of traditional monitoring instruments. The sealing blocks of the internal detection mechanism are evenly distributed along the circumference of the guide column. The radial synchronous extension and retraction are achieved through the posture change of the connecting rod, ensuring the uniformity of the flow cross-sectional area adjustment inside the pipeline. This allows the pressure sensor to collect the average pressure value at different positions of the pipeline cross-section, avoiding detection deviations caused by local dead zones of water flow. The cleaning liquid tank, stirring rod, limiting slide, and cleaning brush form a spraying, stirring, and wiping cleaning system, effectively removing particulate dust deposited on the outer wall of the pipeline, preventing impurities from obscuring the sensor detection unit, and solving the problem of decreased detection accuracy caused by environmental interference in the existing technology.

[0018] 3. The fixing components adopt a clamping and snap-fit ​​fixing structure. The base provides stable support. The upper and lower toothed plates achieve precise clamping of the buffer pipe through the threaded transmission of the threaded rod. The snap-fit ​​locking of the elbow clamping plate and the clamping block further prevents loosening, ensuring that there is no relative displacement between the monitor and the pipeline. It is suitable for installation on straight pipe sections of different diameters, solving the problem of detection benchmark offset caused by the insecure fixing of existing technologies. The external detection mechanism and the fixing components are detachably connected through the clamping plate. The linear movement of the mounting box and the circumferential movement of the arc rack are both driven by gear-rack meshing. The movement trajectory is precise and controllable, and the detection position can be accurately positioned without complicated debugging, reducing the difficulty of operation. The sealing block supports partial obstruction and complete blockage working modes. When partially obstructed, it can simulate working conditions for pressure detection. When completely blocked, it can drain the water in the pipeline, which facilitates targeted repair of suspected leak sections. It solves the problem of the inability of detection and repair to coordinate in existing technologies and improves the efficiency of pipeline network operation and maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the fixing component of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the external detection mechanism of the present invention;

[0022] Figure 4 This is a cross-sectional view of part of the external detection mechanism of the present invention. Figure 1 ;

[0023] Figure 5 This is a cross-sectional view of part of the external detection mechanism of the present invention. Figure 2 ;

[0024] Figure 6This is a cross-sectional schematic diagram of the overall structure of the acoustic wave component of the present invention;

[0025] Figure 7 This is a schematic diagram of the overall structure of the internal detection mechanism of the present invention;

[0026] Figure 8 This is a cross-sectional schematic diagram of the overall structure of the internal detection mechanism of the present invention;

[0027] Figure 9 This is a cross-sectional schematic diagram of a portion of the internal detection mechanism of this invention.

[0028] In the diagram: 1. Buffer tube; 2. Fixing assembly; 21. Base; 22. Lower gear plate; 23. Clamping block; 24. Fixing bracket; 25. Guide bar; 26. Threaded rod; 27. Handle; 28. Slider; 29. ​​Upper gear plate; 210. Elbow clamping plate; 3. External detection mechanism; 31. Moving assembly; 311. Clamping plate; 312. Mounting box; 313. First rotating shaft; 314. First gear; 315. Limiting plate; 316. First motor; 317. Cleaning liquid tank; 318. Stirring rod; 319. Arc-shaped guide tube; 3110. Second motor; 3111. Second gear; 3112. Arc-shaped rack; 31 13. Limiting slide bar; 32. Acoustic wave assembly; 321. First electric telescopic rod; 322. Connecting plate; 323. Cleaning brush; 324. First rotating rod; 325. Pressure tube; 326. Spring; 327. Second rotating rod; 328. Second rotating shaft; 329. Acoustic wave sensor; 4. Internal detection mechanism; 41. Mounting cylinder; 42. Second electric telescopic rod; 43. Cross plate; 44. Third electric telescopic rod; 45. Slide plate; 46. Sealing cylinder; 47. Guide column; 48. Pull rod; 49. First clamping plate; 410. Connecting rod; 411. Second clamping plate; 412. Sealing block; 413. Baffle; 414. Blade rod. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] The following electrical components are all electrically connected via an external PLC controller.

[0031] Please see Figures 1-9 A three-dimensional pipeline system-assisted pipeline pressure monitoring instrument includes a buffer pipe 1, a fixing component 2 for stable detection is provided on the outside of the buffer pipe 1, two fixing components 2 are symmetrically arranged on the outside of the buffer pipe 1, an external detection mechanism 3 for detecting the pipe diameter is provided on the outside of the buffer pipe 1, and an internal detection mechanism 4 for detecting the pressure is provided at the upper end of the buffer pipe 1.

[0032] In this embodiment, the fixing component 2 includes a base 21. A lower toothed plate 22 is fixedly connected to the upper end of the base 21 near the middle. A fixing bracket 24 is rotatably connected to the upper end of the base 21. Two mutually symmetrical guide bars 25 are fixedly connected to the inner side of the fixing bracket 24. A threaded rod 26 is threadedly connected to the inner side of the fixing bracket 24. A handle 27 is fixedly connected to the upper end of the threaded rod 26. A slider 28 is rotatably connected to the lower end of the threaded rod 26. The two sides of the slider 28 are slidably connected to the two guide bars 25 respectively. An upper toothed plate 29 is fixedly connected to the lower end of the slider 28. The slider 28 and the upper toothed plate 29 are movably connected to the buffer tube 1.

[0033] Specifically, the base 21 provides an installation foundation and support carrier for the fixed component 2. The lower toothed plate 22 and the upper toothed plate 29 cooperate to form a clamping structure for the buffer tube 1. The fixed bracket 24 provides installation support for components such as the guide bar 25 and the threaded rod 26. The guide bar 25 restricts the movement direction of the slider 28 to ensure that it moves smoothly in a straight line. The threaded rod 26 converts the rotational motion of the handle 27 into the linear motion of the slider 28 through thread transmission. The handle 27 provides a force application point for manual operation. The slider 28 drives the upper toothed plate 29 to achieve lifting and lowering. Finally, through the opposing clamping of the upper toothed plate 29 and the lower toothed plate 22, a stable connection between the fixed component 2 and the buffer tube 1 is achieved.

[0034] In this embodiment, a locking block 23 is fixedly connected to one side of the base 21, and an elbow locking plate 210 is rotatably connected to one side of the fixed bracket 24. The outer side of the elbow locking plate 210 is movably connected to the locking block 23.

[0035] Specifically, the locking block 23 provides a locking support point for the elbow clamping plate 210. The elbow clamping plate 210 locks the rotation state of the fixed bracket 24 by engaging with the locking block 23, preventing the fixed component 2 from loosening after clamping the buffer tube 1, ensuring that there is no relative displacement between the fixed component 2 and the buffer tube 1, and providing a stable benchmark for subsequent testing.

[0036] In this embodiment, the external detection mechanism 3 includes a moving component 31 for moving and detecting the pressure state, and an acoustic component 32 for surrounding and detecting the pressure state.

[0037] Specifically, the moving component 31 is used to drive the relevant components of the external detection mechanism 3 to move linearly along the axial direction of the buffer tube 1, so as to realize the comprehensive detection of the pipeline axial direction; the acoustic component 32 is used to drive the acoustic sensor 329 to move around the outer wall of the buffer tube 1, so as to realize the detection of the pipeline circumferential direction without dead angles. The two work together to complete the comprehensive auxiliary pressure anomaly detection of the outer wall of the buffer tube 1.

[0038] In this embodiment, the moving component 31 includes a toothed plate 311. The toothed plate 311 has multiple mounting holes on its outer side. The toothed plate 311 is fixedly connected to two bases 21 through the mounting holes. A mounting box 312 is slidably connected to the outer side of the toothed plate 311. A first rotating shaft 313 is rotatably connected to the inner side of the mounting box 312. Two first gears 314 are fixedly connected to the outer side of the first rotating shaft 313. The outer side of the first gears 314 meshes with the teeth of the toothed plate 311. Limiting plates 315 are fixedly connected to both ends of the first gears 314. The outer side of the limiting plates 315 is slidably connected to the toothed plate 311.

[0039] Specifically, the toothed plate 311 is fixed to the two bases 21 through the mounting holes, providing a base for meshing transmission of the first gear 314. The mounting box 312 is used to support components such as the first rotating shaft 313, the first motor 316, and the cleaning liquid tank 317. The first rotating shaft 313 is used to transmit the power of the first motor 316, driving the first gear 314 and the stirring rod 318 to rotate synchronously. The first gear 314 meshes with the teeth of the toothed plate 311, converting the rotational motion of the first rotating shaft 313 into the linear motion of the mounting box 312. The limiting plate 315 slides against the toothed plate 311, restricting the movement trajectory of the mounting box 312 and preventing it from deviating.

[0040] In this embodiment, a first motor 316 is installed on one side of the mounting box 312, and the output shaft of the first motor 316 is fixedly connected to the first rotating shaft 313. A cleaning liquid tank 317 is fixedly connected to the other side of the mounting box 312, and a stirring rod 318 is rotatably connected to the inner side of the cleaning liquid tank 317. One end of the stirring rod 318 is fixedly connected to the first rotating shaft 313.

[0041] Specifically, the first motor 316 provides a power source for the rotation of the first rotating shaft 313, the cleaning liquid tank 317 is used to store the cleaning liquid on the outer wall of the cleaning buffer tube 1, and the stirring rod 318 rotates under the drive of the first rotating shaft 313 to stir the cleaning liquid in the cleaning liquid tank 317 to prevent the cleaning liquid from settling and affecting the cleaning effect.

[0042] In this embodiment, an arc-shaped guide tube 319 is fixedly connected to the upper end of the mounting box 312. A T-shaped groove is provided on the inner side of the arc-shaped guide tube 319. Multiple second motors 3110 are installed at the front end of the arc-shaped guide tube 319. Multiple second gears 3111 are rotatably connected to the inner side of the arc-shaped guide tube 319 through a rotating shaft. The output shafts of the multiple second motors 3110 are fixedly connected to the corresponding second gears 3111. Two mutually symmetrical limiting slides 3113 are provided on the outer side of the arc-shaped guide tube 319. The input port of the limiting slide 3113 is fixedly connected to the cleaning liquid tank 317 through a hose. An arc-shaped rack 3112 is slidably connected to the inner side of the arc-shaped guide tube 319 through a groove. The limiting slides 3113 are fixedly connected to both the front and rear ends of the arc-shaped rack 3112. The outer side of the arc-shaped rack 3112 is meshed with the second gears 3111.

[0043] Specifically, the arc-shaped guide tube 319 provides sliding support and motion guidance for the arc-shaped rack 3112. The T-shaped groove on its inner side ensures that the arc-shaped rack 3112 slides smoothly. The second motor 3110 provides power for the rotation of the second gear 3111. The second gear 3111 meshes with the arc-shaped rack 3112, converting the rotational motion of the second motor 3110 into the circumferential motion of the arc-shaped rack 3112. The limiting slide bar 3113 restricts the movement trajectory of the arc-shaped rack 3112 on the one hand, and on the other hand, it is connected to the cleaning liquid tank 317 through a hose to spray cleaning liquid onto the outer wall of the buffer tube 1. The arc-shaped rack 3112 is used to carry the relevant detection and cleaning components of the acoustic wave assembly 32 to achieve circumferential motion.

[0044] In this embodiment, a cavity is provided on the inner side of the arc-shaped rack 3112. Multiple first electric telescopic rods 321 are installed inside the cavity of the arc-shaped rack 3112. The output shaft of the first electric telescopic rod 321 is fixedly connected to a connecting plate 322. A cleaning brush 323 is fixedly connected to the lower end of the connecting plate 322. The front and rear ends of the connecting plate 322 are rotatably connected to first rotating rods 324 via rotating shafts. A pressure tube 325 is slidably connected to the outer side of the first rotating rod 324. A spring 326 is provided on the inner side of the pressure tube 325. One end of the spring 326 is fixedly connected to the first rotating rod 324, and the other end of the spring 326 is fixedly connected to the pressure tube 325. The other end of the pressure tube 325 is fixedly connected to a second rotating rod 327. A second rotating shaft 328 is rotatably connected to the inner side of the second rotating rod 327. The front and rear ends of the second rotating shaft 328 are fixedly connected to the arc-shaped rack 3112. An acoustic sensor 329 is provided on the upper end of the second rotating rod 327.

[0045] Specifically, the cavity of the arc-shaped rack 3112 provides installation space for the first electric telescopic rod 321. The first electric telescopic rod 321 drives the connecting plate 322 to achieve lifting and lowering. The connecting plate 322 is used to connect the first electric telescopic rod 321 with the cleaning brush 323 and the first rotating rod 324. The cleaning brush 323 adheres to the outer wall of the buffer tube 1 under the drive of the connecting plate 322 to complete the cleaning of the outer wall. The first rotating rod 324, the pressure tube 325 and the spring 326 cooperate to adapt the movement distance through elastic compensation. The second rotating rod 327 performs lever movement with the second rotating shaft 328 as the fulcrum, driving the acoustic sensor 329 to adhere to or move away from the outer wall of the buffer tube 1. The second rotating shaft 328 provides rotational support for the second rotating rod 327. The acoustic sensor 329 is used to detect the pressure fluctuation of the fluid inside the buffer tube 1 to help determine whether there is leakage or other abnormalities.

[0046] In this embodiment, the internal detection mechanism 4 includes a mounting cylinder 41 fixedly connected to the buffer tube 1. A second electric telescopic rod 42 is mounted on the inner side of the mounting cylinder 41. A cross plate 43 is fixedly connected to the output shaft of the second electric telescopic rod 42. Two third electric telescopic rods 44 are mounted on the inner side of the mounting cylinder 41. A slide plate 45 is fixedly connected to the output shaft of the two third electric telescopic rods 44. The inner side of the slide plate 45 is slidably connected to the housing of the second electric telescopic rod 42. A sealing cylinder 46 is fixedly connected to the lower end of the mounting cylinder 41. A guide post 47 is fixedly connected to the inner side of the sealing cylinder 46. A baffle 413 is fixedly connected to the lower end of the guide post 47. A blade rod 414 is rotatably connected to the lower end of the baffle 413 through a rotating shaft. A pressure sensor is provided on the inner side of the blade of the blade rod 414, and a torque sensor is provided on the inner side of the rotating shaft of the blade rod 414.

[0047] Specifically, the mounting cylinder 41 provides a mounting carrier for the components of the internal detection mechanism 4. The second electric telescopic rod 42 drives the cross plate 43 to move the four pull rods 48, realizing the opening and closing of some sealing blocks 412. The cross plate 43 is used to synchronously connect and drive the four pull rods 48. The third electric telescopic rod 44 drives the slide plate 45 to move the other four pull rods 48, realizing the opening and closing of the remaining sealing blocks 412. The slide plate 45 is used to synchronously connect and drive the four pull rods 48, and slides in cooperation with the housing of the second electric telescopic rod 42. The sealing cylinder 46 provides storage and sliding space for the sealing blocks 412. The guide column 47 provides sliding guidance for the pull rods 48. The baffle 413 is used to install the blade rod 414 and provide fitting support for the sealing blocks 412. The blade rod 414 is driven to rotate by the water flow. The pressure sensor on the inside of its blade is used to detect the real-time water flow pressure, and the torque sensor on the inside of the rotating shaft is used to detect the rotation torque to help verify the validity of the pressure data.

[0048] In this embodiment, eight pull rods 48 are slidably connected to the outer side of the guide post 47 via a sliding groove. A first clamping plate 49 is fixedly connected to the other side of the pull rods 48. Two sets of connecting rods 410 are rotatably connected to the inner side of the first clamping plate 49 via a rotating shaft. A second clamping plate 411 is rotatably connected to the outer side of the two sets of connecting rods 410 via a rotating shaft. A sealing block 412 is fixedly connected to the other side of the second clamping plate 411. The outer side of the sealing block 412 is slidably connected to the sealing cylinder 46 and the baffle 413 respectively. The upper ends of four of the eight pull rods 48 are fixedly connected to the sliding plate 45. The upper ends of the other four of the eight pull rods 48 are fixedly connected to the cross plate 43.

[0049] Specifically, the pull rod 48 is used to transmit power to the second electric telescopic rod 42 or the third electric telescopic rod 44, driving the first clamping plate 49 to move. The first clamping plate 49 is used to connect the pull rod 48 and the connecting rod 410. The connecting rod 410 pushes the second clamping plate 411 and the sealing block 412 to move radially by changing its posture (from oblique to horizontal). The second clamping plate 411 is used to connect the connecting rod 410 and the sealing block 412. The sealing block 412 can partially block the cross-sectional area of ​​the pipe flow (simulating a smaller pipe diameter) or completely block the pipe by sliding against the inner wall of the buffer tube 1, and complete the pressure detection under different working conditions in conjunction with the pressure sensor.

[0050] Working principle: During use, the monitoring instrument and buffer tube 1 are first stably assembled using the fixing component 2, providing a stable reference for subsequent pressure testing. The base 21 is placed below the straight section of the buffer tube 1, aligned with the baseline on the outer side of the buffer tube 1. The fixing bracket 24 is rotated to fit against the outer side of the buffer tube 1. The handle 27 is rotated to drive the threaded rod 26, which in turn drives the slider 28 to move downwards along the guide bar 25 via threaded transmission. Finally, the upper toothed plate 29 and lower toothed plate 22 clamp the buffer tube 1. Then, the elbow clamping plate 210 is rotated to engage and lock with the clamping block 23, ensuring no relative displacement between the fixing component 2 and the buffer tube 1, thus guaranteeing the accuracy of subsequent sensor measurements.

[0051] Water flows into the buffer pipe 1 from one end and passes through the main pipe body. After passing through the mounting cylinder 41 and the slide plate 45 in sequence, the water in the main pipe drives the blade rod 414 at the lower end of the baffle 413 to rotate. At this time, the pressure sensor on the inner side of the blade rod 414 directly detects the real-time pressure of the water flow, and the torque sensor on the inner side of its rotating shaft synchronously detects the rotation torque of the blade rod 414. Through the correlation between torque and water flow velocity, the validity of the pressure data is verified, and pressure and flow velocity are monitored in a coordinated manner.

[0052] To simulate a "reduced pipe diameter" scenario and detect the corresponding pressure change, the second electric telescopic rod 42 inside the mounting cylinder 41 is activated. Its output shaft drives four pull rods 48 to move linearly downwards along the groove of the guide post 47 via the cross plate 43. The pull rods 48 drive the connecting rod 410 to move via the first clamping plate 49. The connecting rod 410 drives the second clamping plate 411 and the sealing block 412 to move synchronously. When the lower end of the sealing block 412 is in contact with the baffle 413, the second electric telescopic rod 42 continues to extend, causing the two sets of connecting rods 410 to gradually turn from oblique to horizontal, thereby pushing the sealing block 412 to slide out of the sealing cylinder 46 and fit tightly against the inner wall of the buffer pipe 1. The four sealing blocks 412 together block half of the flow cross-sectional area of ​​the main pipe of the buffer pipe 1, simulating the condition of reduced pipe diameter. The water flow pressure data under this condition is collected in real time by the pressure sensor to determine whether the pressure change conforms to the laws of fluid mechanics.

[0053] Subsequently, auxiliary pressure anomaly detection of the outer wall of the buffer tube 1 is achieved through the external detection mechanism 3 to ensure that there are no blind spots in the detection: the toothed plate 311 is fixedly connected to the two bases 21 through the assembly hole, so that the arc-shaped guide tube 319 is in the detection position below the buffer tube 1; the first motor 316 is started, and its output shaft drives the first rotating shaft 313 to rotate. The first rotating shaft 313 drives the two first gears 314 to mesh with the toothed plate 311, thereby driving the mounting box 312 to move linearly along the toothed plate 311. The limiting plate 315 slides against the toothed plate 311 to prevent the mounting box 312 from shifting; at the same time, the first rotating shaft 313 synchronously drives the stirring rod 318 to rotate, stirring the cleaning liquid in the cleaning liquid tank 317 to prevent sedimentation from affecting the cleaning effect. The limiting slide bar 3113 is activated to spray the cleaning liquid onto the area to be detected on the outer wall of the buffer tube 1 to dissolve and remove the particulate dust deposited on the outer wall, eliminating the interference of impurities on the detection accuracy of the subsequent sensors;

[0054] After cleaning, multiple second motors 3110 are activated, their output shafts rotating in the same direction and driving the corresponding second gears 3111 to rotate. The multiple second gears 3111 mesh in concert to drive the arc-shaped rack 3112 to slide along the T-shaped groove of the arc-shaped guide tube 319. The limiting slide bar 3113 restricts the movement trajectory of the arc-shaped rack 3112, causing it to rotate around the outer wall of the buffer tube 1. The first electric telescopic rod 321 is activated, its output shaft pushing the connecting plate 322 and the cleaning brush 323 to adhere to the outer wall of the buffer tube 1. Through the coordination of the rotating motion of the arc-shaped rack 3112 and the linear motion of the mounting box 312, the outer wall of the buffer tube 1 is thoroughly cleaned. The cleaning process is complete. After the first electric telescopic rod 321 retracts its output shaft, it drives the connecting plate 322 to rise. The connecting plate 322 pulls the first rotating rod 324 through the rotating shaft. The first rotating rod 324 slides in the pressure tube 325 and compresses the spring 326. The elasticity of the spring 326 compensates for the movement distance, thereby driving the second rotating rod 327 to rotate around the second rotating shaft 328. Through the lever principle, the acoustic sensor 329 is made to fit against the outer wall of the buffer tube 1. This prevents residual dust from contaminating the sensor detection unit when the cleaning brush 323 and the sensor are at the same detection angle. It ensures that the acoustic sensor 329 accurately detects the pressure fluctuations of the fluid inside the buffer tube 1, such as local pressure abnormalities caused by leakage.

[0055] When further verification of leakage is needed, the third electric telescopic rod 44 is activated. Its output shaft pushes the slide plate 45, which in turn moves the other four pull rods 48 along the guide post 47 groove, causing the other four sealing blocks 412 to slide out and open simultaneously. The eight sealing blocks 412 together form a circular structure, completely blocking the main pipe of the buffer pipe 1. At this time, the water in the pipe gradually empties. The pressure sensor detects the pressure decay in the pipe under static conditions. Combined with the pressure data under dynamic conditions of pipe diameter reduction simulation and the external wall detection data of the acoustic sensor 329, a comprehensive judgment is made on whether there is a leak in the pipe. If the pressure change under dynamic conditions does not conform to the pressure law corresponding to the pipe diameter reduction, and the pressure continues to decay under static conditions, and the acoustic sensor 329 detects abnormal pressure fluctuations, then it can be determined that there is a potential leak in the pipe. The entire detection process accurately captures the pressure data of the pipe under different flow conditions through the coordinated work of the pressure sensor, torque sensor, and acoustic sensor 329.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional pipeline system-assisted network pressure monitoring instrument, comprising a buffer pipe (1), characterized in that: The buffer tube (1) is provided with a fixing component (2) for stability detection on the outside. Two fixing components (2) are symmetrically arranged on the outside of the buffer tube (1). The buffer tube (1) is provided with an external detection mechanism (3) for detecting the tube diameter status on the outside. The buffer tube (1) is provided with an internal detection mechanism (4) for detecting the pressure status at the upper end.

2. The three-dimensional pipeline system-assisted pipeline pressure monitoring instrument according to claim 1, characterized in that: The fixing component (2) includes a base (21), a lower toothed plate (22) is fixedly connected to the upper end of the base (21) near the middle, a fixing bracket (24) is rotatably connected to the upper end of the base (21), two mutually symmetrical guide bars (25) are fixedly connected to the inner side of the fixing bracket (24), a threaded rod (26) is threadedly connected to the inner side of the fixing bracket (24), a handle (27) is fixedly connected to the upper end of the threaded rod (26), a slider (28) is rotatably connected to the lower end of the threaded rod (26), the two sides of the slider (28) are slidably connected to the two guide bars (25) respectively, and an upper toothed plate (29) is fixedly connected to the lower end of the slider (28). The slider (28) and the upper toothed plate (29) are movably connected to the buffer tube (1).

3. The three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 2, characterized in that: A locking block (23) is fixedly connected to one side of the base (21), and an elbow locking plate (210) is rotatably connected to one side of the fixed bracket (24). The outer side of the elbow locking plate (210) is movably connected to the locking block (23).

4. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 1, characterized in that: The external detection mechanism (3) includes a moving component (31) for moving the detection pressure state, and the external detection mechanism (3) includes an acoustic component (32) for surrounding the detection pressure state.

5. A three-dimensional pipeline system-assisted pipeline pressure monitoring instrument according to claim 4, characterized in that: The moving component (31) includes a toothed plate (311). The toothed plate (311) has multiple mounting holes on its outer side. The toothed plate (311) is fixedly connected to two bases (21) through the mounting holes. A mounting box (312) is slidably connected to the outer side of the toothed plate (311). A first rotating shaft (313) is rotatably connected to the inner side of the mounting box (312). Two first gears (314) are fixedly connected to the outer side of the first rotating shaft (313). The outer side of the first gears (314) meshes with the teeth of the toothed plate (311). Limiting plates (315) are fixedly connected to both ends of the first gears (314). The outer side of the limiting plates (315) is slidably connected to the toothed plate (311).

6. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 5, characterized in that: A first motor (316) is installed on one side of the mounting box (312), and the output shaft of the first motor (316) is fixedly connected to the first rotating shaft (313). A cleaning liquid tank (317) is fixedly connected to the other side of the mounting box (312), and a stirring rod (318) is rotatably connected to the inner side of the cleaning liquid tank (317). One end of the stirring rod (318) is fixedly connected to the first rotating shaft (313).

7. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 5, characterized in that: An arc-shaped guide tube (319) is fixedly connected to the upper end of the mounting box (312). A T-shaped groove is provided on the inner side of the arc-shaped guide tube (319). Multiple second motors (3110) are installed at the front end of the arc-shaped guide tube (319). Multiple second gears (3111) are rotatably connected to the inner side of the arc-shaped guide tube (319) through a rotating shaft. The output shafts of the multiple second motors (3110) are fixedly connected to the corresponding second gears (3111). Two mutually symmetrical limiting slides (3113) are provided on the outside of the guide tube (319). The inlet of the limiting slide (3113) is fixedly connected to the cleaning liquid tank (317) through a hose. The inner side of the arc-shaped guide tube (319) is slidably connected to the arc-shaped rack (3112) through a slide groove. The front and rear ends of the arc-shaped rack (3112) are fixedly connected to the limiting slides (3113). The outer side of the arc-shaped rack (3112) is meshed with the second gear (3111).

8. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 7, characterized in that: The inner side of the arc-shaped rack (3112) is provided with a cavity. Multiple first electric telescopic rods (321) are installed inside the cavity of the arc-shaped rack (3112). The output shaft of each first electric telescopic rod (321) is fixedly connected to a connecting plate (322). A cleaning brush (323) is fixedly connected to the lower end of the connecting plate (322). Both the front and rear ends of the connecting plate (322) are rotatably connected to first rotating rods (324) via rotating shafts. A pressure tube (325) is slidably connected to the outer side of each first rotating rod (324). 5) is provided with a spring (326) on its inner side. One end of the spring (326) is fixedly connected to the first rotating rod (324), and the other end of the spring (326) is fixedly connected to the pressure tube (325). The other end of the pressure tube (325) is fixedly connected to the second rotating rod (327). The inner side of the second rotating rod (327) is rotatably connected to the second rotating shaft (328). Both the front and rear ends of the second rotating shaft (328) are fixedly connected to the arc-shaped rack (3112). The upper end of the second rotating rod (327) is provided with an acoustic sensor (329).

9. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 1, characterized in that: The internal detection mechanism (4) includes an installation cylinder (41) fixedly connected to the buffer tube (1). A second electric telescopic rod (42) is installed on the inner side of the installation cylinder (41). A cross plate (43) is fixedly connected to the output shaft of the second electric telescopic rod (42). Two third electric telescopic rods (44) are installed on the inner side of the installation cylinder (41). A slide plate (45) is fixedly connected to the output shaft of the two third electric telescopic rods (44). The inner side of the slide plate (45) is slidably connected to the housing of the second electric telescopic rod (42). A sealing cylinder (46) is fixedly connected to the lower end of the installation cylinder (41). A guide post (47) is fixedly connected to the inner side of the sealing cylinder (46). A baffle (413) is fixedly connected to the lower end of the guide post (47). A blade rod (414) is rotatably connected to the lower end of the baffle (413) through a rotating shaft. A pressure sensor is provided on the inner side of the blade of the blade rod (414). A torque sensor is provided on the inner side of the rotating shaft of the blade rod (414).

10. A three-dimensional pipeline system-assisted network pressure monitoring instrument according to claim 9, characterized in that: Eight pull rods (48) are slidably connected to the outer side of the guide post (47) via a sliding groove. A first clamping plate (49) is fixedly connected to the other side of the pull rods (48). Two sets of connecting rods (410) are rotatably connected to the inner side of the first clamping plate (49) via a rotating shaft. A second clamping plate (411) is rotatably connected to the outer side of the two sets of connecting rods (410) via a rotating shaft. A sealing block (412) is fixedly connected to the other side of the second clamping plate (411). The outer side of the sealing block (412) is slidably connected to the sealing cylinder (46) and the baffle (413) respectively. The upper ends of four of the eight pull rods (48) are fixedly connected to the sliding plate (45). The upper ends of the other four pull rods (48) are fixedly connected to the cross plate (43).

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