Underground pipe network leakage pollution tracing device

Abstract

The utility model relates to an underground pipe network leakage pollution tracing device which comprises a movable base, a control device, a tracer agent throwing device, a positioning device, a tracer agent sensor, a camera and a shell. The tracer agent putting device is arranged on the movable base, a flow velocity sensor is arranged on the movable base, the tracer agent putting device is wrapped by the shell, and a water permeable hole is formed in the shell; the positioning device, the tracer sensor and the camera are connected to the control device, the tracer sensor is arranged in the circumferential direction of the inner side of the shell, and the camera is arranged on the outer side of the shell; the tracer agent putting device is used for putting tracer agents in batches, and the tracer agent putting device and the movable base are controlled by the control device. The tracer feeding device is suitable for feeding underground pipelines with different pipe diameters, and can be used for feeding quantitative tracers at fixed positions and finding leakage positions in a phreatic aquifer, a confined aquifer and an oil and gas transportation underground pipeline which are difficult to feed the tracers in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipe network management, in particular to an underground pipe network leakage pollution source tracing device. Background Art

[0002] Underground pipeline networks, often called the "capillaries" of a city, refer to pipelines for water supply, drainage, oil and gas, heating, and industrial use, as well as their associated facilities. They are crucial infrastructure and lifelines for urban operations. Safety and economic efficiency are central to pipeline operation management. Leaks in urban water, drainage, oil and gas, and industrial pipelines can cause catastrophic accidents such as water and oil leaks, pollution leaks, and other catastrophic accidents. Furthermore, sewage and sludge from outside the pipelines can be drawn into the pipelines, posing significant safety risks.

[0003] Due to the large area of ​​underground pipeline networks, it is difficult to detect and locate leaks. Therefore, it is necessary to use technical means to continuously monitor changes in relevant data within the underground pipeline network. By accurately and quickly identifying and extracting fluid leakage and contamination characteristics within the pipeline, the leak location can be quickly and accurately located.

[0004] Current underground pipe network leakage detection technologies primarily include active and passive detection methods. Passive detection involves personnel removing manhole covers and manually inspecting underground pipe network leaks. Active detection, based on acoustic or electromagnetic wave theory, uses various methods and instruments to detect leaks early.

[0005] Existing technologies have the following drawbacks: they are time-consuming and costly; they fail to account for imperfections in the pipe network walls, such as holes and cracks. Under these conditions, they cannot guarantee a tight connection between the pipe network walls and the surrounding rock and soil. Furthermore, they are affected by noise and other factors, resulting in inaccurate acoustic or electromagnetic data. Sewage and sludge seeping from outside the underground pipes can be drawn into the pipes, making it difficult to quickly and accurately locate the leak. Sewage and sludge accumulation in underground pipes, as well as aging and clogging of the pipes, can cause changes in the diameter of the underground pipes, making them impossible to inspect manually. Utility Model Content

[0006] In order to solve the problems existing in the above-mentioned prior art, the utility model provides an underground pipe network leakage pollution tracing device, including a mobile base, a control device, a tracer delivery device, a positioning device, a tracer sensor, a camera and a housing.

[0007] A flow rate sensor is mounted on the mobile base to sense the flow rate of the liquid in the pipeline. A tracer delivery device is mounted on the mobile base. A housing encloses the device to protect it from impact. The housing has a permeable hole to allow the medium in the pipeline to flow into the housing, allowing the tracer to be delivered smoothly into the medium in the pipeline.

[0008] The positioning device, the tracer sensor and the camera are connected to the control device. The tracer sensor is arranged on the inner circumference of the shell to sense the tracer released by the tracer delivery device; the camera is arranged on the outer side of the shell to obtain images inside the pipeline; the tracer delivery device is used to deliver the tracer in batches, and the tracer delivery device and the mobile base are controlled by the control device.

[0009] The control device can be external, communicating through wired or wireless means and controlled manually; or it can be built-in, automatically finding the leakage location through artificial intelligence and other means.

[0010] Furthermore, the housing includes a mounting ring and several sub-housing assemblies; each sub-housing assembly includes a sub-housing, a first motor, a first connecting rod and a second connecting rod, the first motor is fixed to the mounting ring, the output end of the first motor is connected to one end of the first connecting rod, and the two ends of the second connecting rod are respectively hinged to the other end of the first connecting rod and the inner side of the sub-housing; the top ends of the sub-housings are connected together, and the mounting ring is installed on the tracer delivery device, so that the sub-housings can be opened outward under the drive of the first motor, so as to increase the distance of the tracer sensor as needed to obtain higher perception accuracy.

[0011] Furthermore, each subshell is provided with a tracer sensor.

[0012] Furthermore, the tracer delivery device includes a gas tank, a solenoid valve assembly and a tracer tank; the tracer tank includes a tank body, a piston and an orifice cap, the piston is slidably arranged in the tank body, and the orifice cap is arranged at the top opening of the tank body and can be opened outward in one direction; a tracer is arranged between the piston and the orifice cap, and the tank body is provided with a vent hole on the side wall corresponding to the lower side of the piston, and the solenoid valve assembly connects the gas tank and the vent hole; the solenoid valve assembly is controlled by a control device, and the amount of tracer delivered in a single time can be controlled by controlling the opening and closing of the solenoid valve assembly.

[0013] Furthermore, tracer sensors are also provided on the outer circumference of the mobile base to increase sensing accuracy.

[0014] Furthermore, the mobile base is also provided with a pressure sensor, a temperature sensor, an inclination sensor and / or a pollutant sensor, which can obtain corresponding information as needed to facilitate further determination of the leakage location.

[0015] In addition to being suitable for placing tracers in underground pipelines of different diameters, the utility model can also place a fixed amount of tracers at fixed locations in phreatic aquifers, confined aquifers, and oil and gas transportation underground pipelines where tracers are difficult to place using existing technologies, and locate leakage locations.

[0016] The utility model can also observe the well wall situation in real time, accurately determine the fluid flow direction, monitor the real-time temperature, horizontal inclination angle, and leakage location. It has the advantages of being reusable, easy to carry, low cost, and not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the traceability device of the present invention.

[0019] In the figure: 1. Mobile base; 2. Tracer delivery device; 3. Positioning device; 4. Tracer sensor; 5. Camera; 6. Housing; 7. Flow sensor; 8. Water permeable hole; 9. Mounting ring; 10. Sub-housing; 11. First motor; 12. First connecting rod; 13. Second connecting rod; 15. Gas tank; 16. Solenoid valve assembly; 18. Tank body; 19. Piston; 20. Orifice cap; 21. Vent; 22. Tracer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 The traceability device of this embodiment includes a mobile base 1, a control device, a tracer delivery device 2, a positioning device 3, a tracer sensor 4, a camera 5, and a housing 6. Preferably, a light is provided at the camera 5 to illuminate the pipeline. This embodiment uses an external control device for manual control, and the control device is equipped with a screen.

[0022] Mobile base 1 is equipped with a flow rate sensor 7 for sensing the flow rate of the liquid in the pipeline. A tracer delivery device 2 is mounted on mobile base 1. A housing 6 encloses the device to protect it from impact. Housing 6 is provided with a water-permeable hole 8 to allow the medium in the pipeline to flow into housing 6, allowing the tracer 22 to be smoothly delivered into the medium in the pipeline.

[0023] The positioning device 3, the tracer sensor 4 and the camera 5 are connected to the control device. The tracer sensor 4 is arranged on the inner circumference of the shell 6 to sense the tracer 22 released by the tracer delivery device 2; the camera 5 is arranged on the outer side of the shell 6 to obtain images inside the pipeline; the tracer delivery device 2 is used to deliver the tracer 22 in batches, and the tracer delivery device 2 and the mobile base 1 are controlled by the control device.

[0024] The housing 6 of this embodiment has a telescopic function. Specifically, the housing 6 includes a mounting ring 9 and several sub-housing assemblies. Each sub-housing assembly includes a sub-housing 10, a first motor 11, a first connecting rod 12, and a second connecting rod 13. The sub-housing 10 is made of a flexible material. The first motor 11 is fixed to the mounting ring 9, with the output end of the first motor 11 connected to one end of the first connecting rod 12. The ends of the second connecting rod 13 are hingedly connected to the other end of the first connecting rod 12 and the inner side of the sub-housing 10. The top ends of the sub-housings 10 are connected together, and the mounting ring 9 is mounted on the tracer delivery device 2. This allows each sub-housing 10 to open outward under the drive of the first motor 11, facilitating the increase in the distance of the tracer sensor 4 as needed to achieve higher sensing accuracy. Preferably, each sub-housing 10 is provided with a tracer sensor 4.

[0025] The tracer dispensing device 2 of this embodiment includes a gas tank 15, a solenoid valve assembly 16, and a tracer tank. The tracer tank includes a tank body 18, a piston 19, and an orifice cap 20. The piston 19 is slidably disposed within the tank body 18. The orifice cap 20 is located at the top opening of the tank body 18 and is connected by a torsion spring. The orifice cap 20 opens outward in one direction under a certain pressure and automatically closes when the pressure is insufficient. Tracer 22 is disposed between the piston 19 and the orifice cap 20. The tank body 18 has a vent 21 on its sidewall corresponding to the underside of the piston 19. The solenoid valve assembly 16 connects the gas tank 15 and the vent 21. The solenoid valve assembly 16 is controlled by a control device. By controlling the opening and closing of the solenoid valve assembly 16, a predetermined amount of gas is injected into the tank body 18 below the piston 19, pushing the piston 19 upward and discharging a predetermined amount of tracer 22. The amount of tracer 22 dispensed in a single dose can be controlled by controlling the opening time of the solenoid valve assembly 16.

[0026] In this embodiment, a tracer sensor 4 is preferably provided on the outer circumference of the mobile base 1 to increase sensing accuracy. The mobile base 1 is also provided with a pressure sensor, a temperature sensor, an inclination sensor, and / or a contaminant sensor to obtain corresponding information as needed to further determine the leakage location.

[0027] The method for using the traceability device in this embodiment includes the following steps:

[0028] S1. Place a traceability device in the underground pipeline network that needs to be detected to monitor fluid data.

[0029] S2. Use the camera 5 to detect the diameter of the underground pipe network and collect images, preliminarily determine the area where the leakage occurs, and move to the area through the mobile base 1.

[0030] S3. Add part of the tracer 22, collect concentration information of the tracer 22 through the tracer sensor 4, and determine the leakage direction in combination with the fluid data.

[0031] S4, move the base 1 in the leakage direction.

[0032] S5. Repeat operations S3-S4 until the leakage location is determined.

[0033] Preferably, S3 further includes determining the current diameter of the underground pipeline network, opening the sub-shell 10 outward, and increasing the distance between the tracer sensor 4 on the corresponding sub-shell 10 and the tracer delivery device 2; and calculating the distance between the corresponding tracer sensor 4 and the tracer delivery device 2 based on the rotation angle of the corresponding first motor 11. When the pipeline diameter decreases or the pipeline is clogged, the sub-shell 10 is retracted inward to facilitate passage.

[0034] The determination method in S3 includes: optimizing the tracer 22 concentration sequence based on the ant colony algorithm and outputting the results through iterative calculation; screening the calculation results of the improved ant colony algorithm and outputting the optimal result of the underground pipeline tracer 22 concentration peak area; constructing the optimization solution space for the underground pipeline leakage location; setting each ant to randomly select the underground pipeline network tracer 22 placement location as the initial placement location, calculating the transfer probability for each ant k (k=1,2,3…n), and determining its tracer 22 diffusion law through probability until the path sequence of all ants is recorded to form a path record table; collecting the optimal path in the path record table in real time, updating the pheromone, and after the first traversal is completed, selecting the ant with the shortest path. This ant releases pheromone in the next traversal. Afterwards, after each traversal is completed, the pheromone concentration of each underground pipeline line is updated based on the pheromone released by the ant with the shortest path; and judging whether it is stagnant and stuck in a local optimum.

[0035] Furthermore, each ant selects a path based on probability, which is determined by the pheromone concentration and the attractiveness of the path. The attractiveness of the path is determined by the predicted underground pipe network leakage location and the availability of underground pipe network tracer 22 diffusion. The calculation formula for the selection probability Pij is: ; Where Pij is the probability of an ant choosing from node i to node j, is the pheromone concentration of ants from node i to node j, is the path attraction of the ant from node i to node j, and To adjust the parameters, is the pheromone concentration of the ant from node i to the node k that has not been reached, is the path attraction of the ant from node i to the unreached node k, and allowed is the set of nodes that the ant is about to visit.

[0036] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An underground pipe network leakage pollution tracing device, characterized in that: The device comprises a mobile base, a control device, a tracer delivery device, a positioning device, a tracer sensor, a camera and a housing; the tracer delivery device is arranged on the mobile base, a flow rate sensor is provided on the mobile base, the housing covers the tracer delivery device and a water permeable hole is provided on the housing; the positioning device, the tracer sensor and the camera are connected to the control device, the tracer sensor is arranged on the inner circumference of the housing, and the camera is arranged on the outer side of the housing; the tracer delivery device is used to deliver the tracer in batches, and the tracer delivery device and the mobile base are controlled by the control device.

2. The underground pipe network leakage pollution tracing device according to claim 1 is characterized in that: The housing includes a mounting ring and several sub-housing assemblies; each sub-housing assembly includes a sub-housing, a first motor, a first connecting rod and a second connecting rod, the first motor is fixed on the mounting ring, the output end of the first motor is connected to one end of the first connecting rod, and the two ends of the second connecting rod are respectively hinged to the other end of the first connecting rod and the inner side of the sub-housing; the top ends of the sub-housings are connected together, and the mounting ring is installed on the tracer delivery device, so that the sub-housings can be opened outward under the drive of the first motor.

3. The underground pipe network leakage pollution tracing device according to claim 2 is characterized in that: Each subshell is provided with a tracer sensor.

4. The underground pipe network leakage pollution tracing device according to claim 1 is characterized in that: The tracer delivery device includes a gas tank, a solenoid valve assembly and a tracer tank; the tracer tank includes a tank body, a piston and an orifice cap, the piston is slidably arranged in the tank body, and the orifice cap is arranged at the top opening of the tank body and can be opened outward in one direction; a tracer is arranged between the piston and the orifice cap, the tank body is provided with a vent hole on the side wall corresponding to the lower side of the piston, and the solenoid valve assembly is connected to the gas tank and the vent hole; the solenoid valve assembly is controlled by a control device.

5. The underground pipe network leakage pollution tracing device according to claim 1 is characterized in that: Tracer sensors are also provided on the outer circumference of the mobile base.

6. The underground pipe network leakage pollution tracing device according to claim 1 is characterized in that: The mobile base is also provided with a pressure sensor, a temperature sensor, an inclination sensor and / or a pollutant sensor.

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