Buried pipeline leakage detection device
By setting up a hydrophobic layer and a water flow absorption layer around the buried pipeline, combined with the design of the leak detection device, the difficulty, insufficient accuracy and environmental interference of buried pipeline leakage detection in the prior art is solved, and high-precision and real-time leakage detection is achieved.
Patent Information
- Application Number
- CN202510117599.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-05-13
AI Technical Summary
The prior art is difficult to accurately and timely detect leakage in buried pipelines, and the detection accuracy is insufficient, and it is easy to miss inspection. External environmental factors interfere with severe interference, affecting the accuracy of the detection.
A buried pipeline leakage detection device is designed, including a hydrophobic layer, a water flow absorption layer, a water leakage detection device, a drainage device and a data reading device. The hydrophobic layer and the water flow absorption layer reduce external environmental interference. The water leakage detection device uses weak permeable materials and water-absorbing scattered materials to achieve real-time monitoring through data transmission cables.
It improves detection accuracy and real-timeness, reduces external environment interference, reduces maintenance costs, accurately detects tiny leakage and determines the leakage points in a timely manner.
Smart Images
Figure CN119983153A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pipeline leakage detection, and in particular to a buried pipeline leakage detection device. Background Art
[0002] With the increasing demand for industrial, agricultural and domestic water, the number of water supply pipelines has increased dramatically, the pipeline network has become more complex, and the difficulty of pipeline construction has also increased. Water supply and drainage pipelines have become an indispensable part of water diversion projects. As an important part of the water supply system, the monitoring and maintenance of the operating status of buried pipelines is crucial. When the buried pipeline is actually in operation, the irregular vibration of the pipeline will disturb the flow pattern of the water inside the pipeline, and the disturbance of the flow pattern will increase the impact of the water flow on the pipeline, which is very likely to cause cracks in the pipeline and lead to leakage. Therefore, timely detection and repair of pipeline leakage is of great significance to ensure the normal operation of the water supply system, reduce water resource waste and avoid environmental pollution.
[0003] However, since buried pipelines are usually buried at great depths, it is extremely difficult to detect pipeline leakage. Traditional leakage detection methods such as manual inspections and pressure tests are difficult to accurately and timely find leakage points, and the detection efficiency is low. Existing leakage detection devices mostly rely on pressure changes or flow monitoring. These methods are not accurate enough when detecting small leaks and are prone to missed detections. In addition, external environmental factors such as rainwater infiltration and groundwater level changes can also interfere with the detection results and affect the accuracy of the detection. Summary of the invention
[0004] In view of the above-mentioned defects and problems, the present invention provides a buried pipeline leakage detection device, aiming to solve the problems existing in the prior art such as great detection difficulty, insufficient accuracy, environmental interference, and insufficient real-time monitoring.
[0005] The solution adopted by the present invention to solve its technical problem is: a buried pipeline leakage detection device, including a buried pipeline, and also including a hydrophobic layer, a water flow absorption layer, a leakage detection device, a drainage device and a data reading device. The upper and middle parts of the hydrophobic layer are closely attached to the buried pipeline, and a lower cavity is retained between the lower part and the outer wall of the buried pipeline. The hydrophobic layer is made of water-repellent material, and a drainage device is arranged at intervals at the lower part of the hydrophobic layer to vent excess water discharged from the buried pipeline. A water flow absorption layer is arranged around the outside of the buried pipeline and the hydrophobic layer to absorb ground seepage from rainwater. The leakage detection device is arranged in a ring shape along the outer wall of the buried pipeline to detect water seepage. Each leakage detection device transmits real-time monitoring data to the data reading device on the ground through a data transmission cable at the tail. By observing the current changes and pressure readings on the data reading device, it is judged whether there is a leak in the buried pipeline.
[0006] Furthermore, the water leakage detection device includes a detection device shell in the shape of a small funnel, a layer of weakly permeable material is arranged on the top of the detection device shell, and a water-absorbing granular material is arranged in the upper funnel portion of the detection device shell, and a pressure gauge is installed below the water-absorbing granular material, the water-absorbing granular material is internally connected to a power-carrying wire, and a data transmission cable is externally connected below the pressure gauge, and the data transmission cable is used to transmit the current value of the power-carrying wire and the reading value of the pressure gauge.
[0007] Furthermore, the drainage device includes a water-absorbing sponge pad and a water collecting funnel. The water-absorbing sponge pad is arranged at equal intervals between the buried pipeline and the hydrophobic layer. The water collecting funnel is located directly below the water-absorbing sponge pad. The water collecting funnel discharges the water collected in the lower cavity into the underground soil.
[0008] Furthermore, the water flow absorption layer adopts a hard double-layer drainage sponge, and a drainage cavity is reserved in the middle of the hard double-layer drainage sponge.
[0009] Furthermore, a peripheral reinforcement body is provided on the periphery of the buried pipeline, and the peripheral reinforcement body includes a fixed steel frame, and the four corners of the fixed steel frame are connected to suction cups through a support frame, and the suction cups are in contact with the outer wall of the buried pipeline. Two fixed supports are fixed to the upper part of the fixed steel frame, and the lower ends of the fixed supports are connected to a buffer layer, and the buffer layer is in contact with the outer wall of the buried pipeline to achieve compaction and fixation of the hydrophobic layer and the water-absorbing sponge pad.
[0010] Furthermore, the thickness of the weakly permeable material does not exceed 2 mm, and the permeability coefficient is between 10 -2 -10 -3 cm / s, ensuring that a small amount of water leakage from the buried pipeline passes through; the water-absorbing granular material has water adsorption capacity, and its resistance changes after absorbing water.
[0011] Furthermore, the permeability coefficient of the hydrophobic layer is less than 10 -5 cm / s.
[0012] Furthermore, the data transmission cable at the rear of the water leakage detection device is connected to the data reading device after being guided by a waterproof data conduit.
[0013] Furthermore, the inner bottom of the hard double-layer drainage sponge is sunken downward to form a recess to provide support for the cavity below the hydrophobic layer.
[0014] Beneficial effects of the present invention: The present invention arranges a hydrophobic layer and a water flow absorption layer around the pipeline, the hydrophobic layer can effectively isolate the external environmental interference, and the water flow absorption layer adopts a hard double-layer drainage sponge, which can absorb the ground seepage of rainwater, reduce the interference of the external environment on the detection result, and improve the detection accuracy; The water leakage detection device uses weakly permeable materials and water-absorbing granular materials, which can accurately detect tiny leaks and improve detection accuracy. The water leakage detection device is arranged in a ring along the outer wall of the pipeline. Each water leakage detection device transmits real-time monitoring data to the data reading device on the ground through a data transmission cable, realizing real-time monitoring of pipeline leakage. Users can quickly determine whether there is leakage in the pipeline and determine the pipeline leakage point in time through the current changes and pressure readings on the data reading device. The water leakage detection device, drainage device and peripheral reinforcement components adopt a modular design with a simple structure and easy installation and maintenance. The device not only improves the detection accuracy and real-time performance, but also effectively reduces the interference of the external environment and reduces the maintenance cost. It has important practical application value and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 It is a schematic diagram of the coordination structure of the hydrophobic layer and the buried pipeline of the present invention; Figure 3 It is the distribution diagram of the water leakage detection device of the present invention; Figure 4 It is a front view structural schematic diagram of the water leakage detection device of the present invention; Figure 5 It is a schematic diagram of the bottom structure of the water leakage detection device of the present invention; Figure 6 It is a schematic diagram of the structure of the water flow absorption layer of the present invention; Figure 7 It is a schematic diagram of the peripheral reinforcement structure of the present invention; Figure 8 It is a schematic diagram of the waterproof data conduit structure of the present invention.
[0016] In the figure: 1. buried pipeline; 2. water-absorbing sponge cushion; 3. hydrophobic layer; 4. water collecting funnel; 5. water leakage detection device; 51. detection device shell; 52. water-absorbing granular material; 53. pressure gauge; 54. weakly permeable material; 55. power-carrying wire; 56. data transmission cable; 57. detachable ring; 6. waterproof data conduit; 61. pipe body one; 62. pipe body two; 7. data reading device; 8. water flow absorption layer; 81. outer layer of hard drainage sponge; 82. inner layer of hard drainage sponge; 83. drainage cavity; 84. make way groove; 9. outer reinforcement body; 91. fixed steel frame; 92. support frame; 93. suction cup; 94. fixed support; 95. buffer cushion. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0018] See also Figure 1-8 The present invention provides a technical solution for a buried pipeline leakage detection device: Example
[0019] according to Figure 1 and Figure 2 As shown, a buried pipeline leakage detection device mainly comprises a buried pipeline 1, a hydrophobic layer 3 close to the buried pipeline 1, and a leakage detection device 5 arranged around the buried pipeline 1 and playing a major role in detecting water seepage. The hydrophobic layer 3 is made of water-repellent material, and has a very small permeability coefficient of less than 10 -5 cm / s, the upper and middle parts of the hydrophobic layer 3 are tightly attached to the outer wall of the buried pipe 1, and a lower cavity of no more than 3 cm is left between the lower part and the outer wall of the buried pipe 1, so as to facilitate the collection and centralized discharge of pipe seepage water. If the pipe leaks, the leaked water will not seep into the external soil layer through the hydrophobic layer, but will only flow along the pipe wall into the lower cavity.
[0020] like Figure 3 As shown, the water leakage detection device 5 is arranged in a ring shape along the outer wall of the pipeline. The specific structure of the water leakage detection device 5 is as follows Figure 4 and Figure 5 As shown, the detection device housing 51 is in the shape of a small funnel, with a layer of weakly permeable material 54 at the top. The funnel portion inside the detection device housing 51 is provided with a water-absorbing granular material 52 of fixed thickness, and a small pressure gauge 53 is provided below the water-absorbing granular material 52. There is an electric conducting wire 55 inside the water-absorbing granular material 52, and a data transmission cable 56 is externally connected to the pressure gauge 53 below. The bottom of the detection device housing 51 is open and a detachable ring 57 is installed at the bottom. A lead hole is reserved in the center of the detachable ring 57, and a thread is provided in the hole. The data transmission cable 56 is led out through the reserved lead hole, and the data transmission cable 56 is used to transmit the current value of the electric conducting wire 55 and the reading value of the pressure gauge 53. The water leakage detection device 5 is arranged in a ring shape, and the data transmission cable 56 at the tail end of each detection device is connected to the waterproof data wire of the ring. The waterproof data wire is guided by the waterproof data conduit 6 to export relevant parameters to the ground. The waterproof data wire is connected to the data reading device 7 on the ground. Each ring of water leakage detection devices 5 transmits real-time monitoring data to the data reading device 7 on the ground through the data transmission cable 56 at the tail. By observing the current changes and pressure readings on the data reading device 7, if the pressure reading increases and the current decreases compared to normal conditions, it indicates that water has entered the water leakage detection device 5, indicating that there is a leak in this section of the pipeline.
[0021] The thickness of the weakly permeable material 54 wrapped on the top of the water leakage detection device 5 does not exceed 2 mm, and the water permeability coefficient is between 10 -2 -10 -3cm / s, ensuring that the pipeline leaks can pass through but not too much, the water-absorbing granular material has a strong water adsorption capacity, and its resistance will change greatly after absorbing water. The size of the entire water leakage detection device 5 is not more than 5cm, and the water leakage detection device 5 is arranged in a 180° ring at the lower part of the pipeline. The number of water leakage detection devices 5 in each ring is 7, and its axis is directly opposite to the pipe axis. The angle between adjacent detection devices is 30°, and the spacing between each ring of detection devices is 1m.
[0022] A drainage device is arranged at a certain distance below the hydrophobic layer 3 to discharge the excess water discharged from the pipeline. The drainage device is composed of a water-absorbing sponge cushion layer 2 and a water collecting funnel 4. The water-absorbing sponge cushion layer 2 is arranged around the buried pipeline 1 and the hydrophobic layer 3 at equal intervals. The function of the water-absorbing sponge cushion layer 2 is to accelerate the collection speed of the leaking water. The water collecting funnel 4 is in the shape of a funnel and is located directly below the buried pipeline 1 and the water-absorbing sponge cushion layer 2. The collected water is discharged into the underground soil through the lower conduit of the funnel through the entire detection device. The drainage device wrapped inside the hydrophobic layer 3, namely the water-absorbing sponge cushion layer 2 and the water collecting funnel 4, should be spaced between 2m and 3m. The water collecting funnel 4 is arranged directly below the annular sponge. The upper diameter of the water collecting funnel 4 should be 4-5 times the thickness of the annular water-absorbing sponge cushion layer. The lower part of the water collecting funnel 4 runs through the entire water leakage detection device 5, and the internal seepage water is discharged into the soil outside the device through the lower end fine part by gravity.
[0023] In specific use, the present invention is a buried pipeline leakage detection device. When there is water seepage at a certain place of the buried pipeline 1, under the constraint of the hydrophobic layer 3 close to the pipeline and the action of gravity, no matter whether the crack on the pipeline appears in the upper part, middle part or lower part of the pipeline, the seepage water will be concentrated in the lower cavity of the hydrophobic layer 3, and move to the water-absorbing sponge cushion layer 2 at both ends, and be discharged to the underground through the water collecting funnel 4. Since the leakage is continuous, in the process of migration of the seepage water to both sides, it will pass through the seepage detection device arranged in this section. A small amount of seepage water will penetrate the surface weak water-permeable material 54 of the seepage detection device, and then be quickly absorbed by the internal water-absorbing granular material 52. After the material absorbs water, due to the change of its own weight, it will cause the change of the reading of the lower sensitive small pressure gauge 53. At the same time, due to the large change of the resistance of the material after absorbing water, the current passing through the internal power-carrying wire 55 of the device changes, and the relevant data will be transmitted to the ground data reading device 7 along the waterproof data wire of the ring leakage detection device, and the leaking section can be quickly determined according to the number of the data reading device 7. Example
[0024] On the basis of the first embodiment, in order to prevent the external water from affecting the water seepage detection device, a water flow absorption layer 8 is externally connected to the buried pipeline 1, such as Figure 6As shown, the external water flow absorption layer 8 uses a hard double-layer sponge. The sponge used here has a certain hardness, the sponge thickness is 2cm, and each group of water flow absorption layers is set at an interval of 3m. Specifically, the hard double-layer sponge includes an inner hard drainage sponge 82 and an outer hard drainage sponge 81 wrapped around the outer periphery of the buried pipe 1. A drainage cavity 83 is left at a certain distance between the inner hard drainage sponge 82 and the outer hard drainage sponge 81. The size of the drainage cavity 83 is 5mm. The bottom of the inner hard drainage sponge 82 is partially dug downward to form a recess 84, which can provide support for the lower cavity of the hydrophobic layer 3 without squeezing the cavity volume. The function of the water flow absorption layer is to absorb ground seepage of rainwater to prevent the water seepage detection device from being affected by changes in the external environment. Example
[0025] On the basis of the first embodiment, in order to improve the stability of the buried pipeline 1, the hydrophobic layer 3 and the water leakage detection device 5 in the stratum, a peripheral reinforcement body 9 is provided on the outside of the buried pipeline 1 to fix the entire structure. Figure 8 As shown, the outer layer of the peripheral reinforcement body 9 is a fixed steel frame 91, and the buried pipeline 1 is set in the center position of the fixed steel frame 91. The four corners of the fixed steel frame 91 are connected to suction cups 93 through support frames 92. The suction cups 93 are in contact with the outer wall of the buried pipeline 1 and are fixed on the buried pipeline 1 by adsorption. The diameter of the support frame 92 is not less than 2 cm, and the radius of the suction cups 93 is not less than 2 cm. Two fixed supports 94 are welded and fixed on the upper part of the fixed steel frame 91. The lower end of the fixed support 94 is connected to a polyethylene cushion layer 95. The polyethylene cushion layer is a cube with a thickness of no more than 0.5 cm. The cushion layer 95 is in contact with the outer wall of the buried pipeline 1 to achieve compaction and fixation of the internal hydrophobic layer 3, water-absorbing sponge and other structures on the upper part of the pipeline, and at the same time play a protective role for the entire leakage detection device. Further, the peripheral reinforcement body 9 is disconnected at the external water flow absorption layer 8, and the rest of the part is fully wrapped. Example
[0026] On the basis of the first embodiment, the data transmission cable 56 at the tail of the water leakage detection device 5 is connected to the waterproof data wire, and is connected to the data reading device 7 after being guided by the waterproof data conduit 6. The waterproof data conduit 6 is composed of two tube structures, such as Figure 8 As shown, the length of tube body 1 61 is shorter, and it is made of polymer rubber material, with a length of 5 cm, an outer diameter of 1.2 cm, an inner diameter of 1 cm, and threads on both the upper and lower ends. A three-way tube is axially arranged in the middle of the pipe, and the angle between the adjacent pipe axes of the fork tube is 120 degrees. The length of the fork tube is 1 cm, the outer diameter is 1 cm, and there are threads on the outside; the length of tube body 2 62 is longer, and it is made of polymer rubber material, with a length of more than 10 cm, an outer diameter of 2 cm, an inner diameter of 1.2 cm, and threads on the inside of the pipe.
[0027] By setting up two structures of waterproof data conduits 6, the tube body 1 61 is set at the tail end of the water leakage detection device 5, and the wires are flexibly led according to the placement position of the water leakage detection device 5. The data transmission cable 56 can enter from both ends of the tube body 1 61, and can also enter from the middle three-pronged tube, and the tube body 1 61 can be freely combined and spliced as needed. After the data transmission cable 56 is combed, the longer tube body 2 62 can be connected to the tube body 1 61 to lead the waterproof data wire inside to the data reading device 7 on the ground.
[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A buried pipeline leakage detection device, comprising a buried pipeline, characterized in that: It also includes a hydrophobic layer, a water flow absorption layer, a water leakage detection device, a drainage device and a data reading device. The upper and middle parts of the hydrophobic layer are in close contact with the buried pipeline, and a lower cavity is retained between the lower part and the outer wall of the buried pipeline. The hydrophobic layer is made of water-repellent material, and a drainage device is arranged at intervals at the lower part of the hydrophobic layer to vent excess water discharged from the buried pipeline. A water flow absorption layer is arranged around the outside of the buried pipeline and the hydrophobic layer to absorb ground seepage from rainwater. The water leakage detection device is arranged in a ring shape along the outer wall of the buried pipeline to detect water seepage. Each water leakage detection device transmits real-time monitoring data to the data reading device on the ground through a data transmission cable at the tail. By observing the current changes and pressure readings on the data reading device, it is determined whether there is a leak in the buried pipeline.
2. A buried pipeline leakage detection device according to claim 1, characterized in that: The water leakage detection device includes a detection device shell in the shape of a small funnel, a layer of weakly permeable material is arranged on the top of the detection device shell, and a water-absorbing granular material is arranged in the upper funnel portion of the detection device shell, and a pressure gauge is installed below the water-absorbing granular material, the water-absorbing granular material is internally connected to a power-carrying wire, and a data transmission cable is externally connected below the pressure gauge, and the data transmission cable is used to transmit the current value of the power-carrying wire and the reading value of the pressure gauge.
3. The buried pipeline leakage detection device according to claim 1, characterized in that: The drainage device includes a water-absorbing sponge cushion layer and a water collecting funnel. The water-absorbing sponge cushion layer is arranged around the buried pipeline and the hydrophobic layer at equal intervals. The water collecting funnel is located directly below the water-absorbing sponge cushion layer. The water collecting funnel discharges the water collected in the lower cavity into the underground soil.
4. The buried pipeline leakage detection device according to claim 1, characterized in that: The water flow absorption layer adopts a hard double-layer drainage sponge, and a drainage cavity is reserved in the middle of the hard double-layer drainage sponge.
5. The buried pipeline leakage detection device according to claim 3, characterized in that: The periphery of the buried pipeline is provided with a peripheral reinforcement body, and the peripheral reinforcement body includes a fixed steel frame, and the four corners of the fixed steel frame are connected with suction cups through a support frame, and the suction cups are in contact with the outer wall of the buried pipeline. Two fixed supports are fixed on the upper part of the fixed steel frame, and the lower ends of the fixed supports are connected to a buffer pad layer, and the buffer pad layer is in contact with the outer wall of the buried pipeline to achieve compaction and fixation of the hydrophobic layer and the water-absorbing sponge pad layer.
6. The buried pipeline leakage detection device according to claim 2, characterized in that: The thickness of the weakly permeable material shall not exceed 2 mm, and the permeability coefficient shall be between 10 -2 -10 -3 cm / s, ensuring that a small amount of water leakage from the buried pipeline passes through; the water-absorbing granular material has water adsorption capacity, and its resistance changes after absorbing water.
7. The buried pipeline leakage detection device according to claim 1, characterized in that: The permeability coefficient of the hydrophobic layer is less than 10 -5 cm / s.
8. The buried pipeline leakage detection device according to claim 2, characterized in that: The data transmission cable at the tail of the water leakage detection device is connected to the waterproof data wire, and is connected to the data reading device after being guided by the waterproof data conduit.
9. The buried pipeline leakage detection device according to claim 4, characterized in that: The inner bottom of the hard double-layer drainage sponge is sunken downward to form a clearance groove, which provides support for the cavity below the hydrophobic layer.