Pipeline leakage detecting and positioning device

Abstract

A pipeline leakage detecting and positioning device comprises an inspection robot, a flange plate air leakage visualization assembly and a flange plate crossing guide assembly, two front and back adjacent pipelines are connected through a pair of flange plates and a bolt assembly, and the flange plate air leakage visualization assembly wraps and seals the pair of flange plates. The flange plate crossing guide assembly is arranged outside the flange plate and extends to the outer circle of the pipeline on the front side and the outer circle of the pipeline on the rear side, and the inspection robot is arranged on the pipeline and moves along the pipeline to conduct visual detection on the pipeline surface and the flange plate air leakage visual assembly. A gas leakage pipeline is determined through numerical value changes of the flow meter, and a gas leakage source is positioned through visual inspection of the inspection robot. And the pipeline can be analyzed and detected in real time, so that the abnormal state of the pipeline, such as visual traces of bubbles and gas leakage, can be identified. And in a complex underground environment, the detection rate and precision of the gas leakage phenomenon can be obviously improved, so that potential safety accidents are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining engineering, and in particular relates to a pipeline leakage detection and positioning device. Background Art

[0002] In modern mining operations, the safety of underground gas extraction pipelines is directly related to the safety of miners and the overall mine environment. The development of smart mining and automation technologies has placed higher demands on the detection and identification of gas leaks. Traditional gas leak detection often relies on manual inspections, which are inefficient and susceptible to subjective factors, making it difficult to promptly detect and respond to potential hazards. With the continuous advancement of computer vision and artificial intelligence technologies, the rapid and intelligent identification of gas leaks in underground gas extraction pipelines has become a hot topic among researchers. Utility Model Content

[0003] In order to solve the above technical problems existing in the prior art, the utility model provides a pipeline leakage detection and positioning device which has a simple structure, is safe and reliable, has high efficiency, and reduces manual labor intensity.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a pipeline leakage detection and positioning device, including an inspection robot, a flange leakage visualization component and a flange spanning guide component. The two adjacent front and rear pipelines are connected by a pair of flanges and bolt assemblies. The flange leakage visualization component wraps and seals the pair of flanges. The flange spanning guide assembly is arranged on the outside of the flange and extends to the outer circle of the pipeline on the front side and the outer circle of the pipeline on the rear side. The inspection robot is arranged on the pipeline, and the inspection robot moves along the pipeline to perform visual detection on the pipeline surface and the flange leakage visualization component.

[0005] The inspection robot includes a circular cylindrical shell, and at least three crawler walking devices are evenly arranged along the circumference of the inner circle of the circular cylindrical shell. Each crawler walking device is connected to the inner circle of the circular cylindrical shell through at least two springs. The inside of the circular cylindrical shell is equipped with several high-resolution cameras, several LED lighting beads, a control chip, a signal transmission module, a power battery and a backup power battery. The control chip is integrated with a computer vision leakage detection model.

[0006] The annular cylindrical shell includes two semi-cylindrical shells, and one end and the other end of the two semi-cylindrical shells are connected by a hinge and a snap structure respectively.

[0007] The flange leakage visualization component includes an annular water bag that wraps a pair of flanges. The annular water bag is sealed to the two pipes with waterproof glue. A water injection hole is provided in the annular water bag. After the annular water bag is filled with water through the water injection hole, the water injection hole is connected to a plastic hose. The plastic hose is connected to a water level gauge arranged along the length of the pipe. The water level gauge is bonded to the outer circle of the pipe. There is a small ball with a clear mark in the water level gauge.

[0008] The flange spanning guide assembly includes a front cone cylinder, a middle cylinder and a rear cone cylinder which are coaxial with the pipeline. The front cone cylinder is smaller in front and larger in rear, while the rear cone cylinder is smaller in rear and larger in front. The front end of the front cone cylinder contacts the outer circle of the pipeline on the front side of the flange, the front and rear ends of the middle cylinder are docked with the rear end of the front cone cylinder and the front end of the rear cone cylinder respectively, and the rear end of the rear cone cylinder contacts the outer circle of the pipeline on the rear side of the flange. The outer circle of the pipeline on the front side of the flange is provided with a front bracket connected to the inner circle of the front cone cylinder, and the outer circle of the pipeline on the rear side of the flange is provided with a rear bracket connected to the inner circle of the rear cone cylinder; a small hole for passing a water level gauge is opened on the front side of the front cone cylinder or the rear side of the rear cone cylinder.

[0009] By adopting the above technical solution, the utility model has the following technical effects:

[0010] (1) A flow meter is installed on the pipeline. When the flow meter shows an abnormality, it indicates that the pipeline is leaking. At this time, the inspection robot is started. As the inspection robot moves along the pipeline, it observes the pipeline surface and the small ball in the water level gauge of the flange leakage visualization component. If a crack is found on the pipeline, it indicates that the pipeline is leaking at the crack. If the small ball in the water level gauge fluctuates, it indicates that the flange is leaking. The inspection robot quickly identifies the leak and sends a leak signal and an alarm signal to remind the staff to take prompt measures.

[0011] (2) High degree of automation: Inspection robots can perform inspection tasks completely independently, reducing human intervention, which reduces dependence on human resources and reduces the possibility of human operational errors.

[0012] (6) Once a gas leak is detected, the inspection robot will immediately trigger an alarm and initiate emergency response measures, thereby promptly addressing potential hazards and minimizing the incidence of accidents. By allowing inspection robots to replace manual inspections of hazardous areas, the possibility of workers being exposed to high-risk environments can be effectively reduced, ensuring employee safety.

[0013] (7) Low long-term operating costs: Although the initial equipment investment may be high, in the long run, it can significantly reduce the cost of manual supervision and avoid potential economic losses caused by leaks. Reduced labor burden: The automated detection system can reduce the demand for professional technicians, thereby further reducing human resource costs and optimizing staffing.

[0014] (8) By filling the water bag with water or other liquids, when the flange leaks, the water in the water bag will fluctuate, causing the ball in the water level gauge to float, facilitating image acquisition by the inspection robot. The air leak on the pipeline is detected by a high-resolution camera to observe whether there are cracks on the pipeline surface.

[0015] (9) Since two adjacent pipes are connected by a flange, and the diameter of the flange is larger than the diameter of the pipe, a double-cone cylinder structure composed of a front cone, a middle cone, and a rear cone is set on the outside of the flange. The structure is thick in the middle and gradually becomes thinner towards the front and back sides. The water bag and the flange are covered to facilitate the passage of the inspection robot and will not cause vibration to the water bag, so as to avoid vibration causing fluctuations in the water and small balls in the water bag.

[0016] In summary, this utility model identifies leaking pipelines through changes in flowmeter readings and locates the leak source through visual inspection by a patrol robot. This allows for real-time pipeline analysis and detection, identifying abnormal conditions such as bubbles and visible signs of gas leaks. In complex underground environments, this rapid, intelligent identification method significantly improves the detection rate and accuracy of leaks, thereby reducing potential safety incidents.

[0017] The importance of this utility model lies not only in ensuring the safety of workers but also in reducing the economic losses and environmental pollution caused by gas leaks. Rapidly identifying and responding to gas leak risks facilitates timely action to prevent further incidents. By implementing an intelligent, automated detection system, the intelligence level of underground safety management can be enhanced, improving safe mine operations and efficiency.

[0018] At the same time, the application of this utility model is also promoting the transformation of the mining industry towards digitalization and intelligence, promoting safe production in mines and efficient utilization of resources. In summary, the method of quickly and intelligently identifying gas leaks in underground pipelines is an important means to ensure mine safety and improve production efficiency, and has very broad application prospects and social value.

[0019] The pipeline in the utility model can not only be a gas extraction pipe in a coal mine, but also can be used for gas leakage detection in the industrial field. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the side structure of the inspection robot. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0023] like Figure 1 and Figure 2 As shown, the utility model is a pipeline leakage detection and positioning device, including an inspection robot 4, a flange leakage visualization component and a flange spanning guide component. The two adjacent pipelines 2 in front and behind are connected by a pair of flanges and bolt assemblies. The flange leakage visualization component wraps and seals a pair of flanges 5. The flange spanning guide component is arranged on the outside of the flange and extends to the outer circle of the front pipeline 2 and the outer circle of the rear pipeline 2. The inspection robot is arranged on the pipeline 2, and the inspection robot moves along the pipeline 2 to perform visual inspection on the surface of the pipeline 2 and the flange leakage visualization component.

[0024] The inspection robot 4 includes an annular cylindrical shell, and at least three crawler walking devices 6 are evenly arranged along the circumference of the inner circle of the annular cylindrical shell. Each crawler walking device 6 is connected to the inner circle of the annular cylindrical shell through at least two springs 7. The inside of the annular cylindrical shell is provided with several high-resolution cameras 8, several LED lighting beads 9, a control chip 10, a signal transmission module 11, a power battery 12 and a backup power battery 25. A computer vision leakage detection model is integrated in the control chip 10 for real-time detection of whether a pipeline leakage occurs.

[0025] The annular cylindrical shell includes two semi-cylindrical shells 13 , and one end and the other end of the two semi-cylindrical shells 13 are connected by a hinge 14 and a snap-fit ​​structure 15 respectively.

[0026] The flange leakage visualization component includes an annular water bag 16 that wraps a pair of flanges 5. The annular water bag 16 is sealed to the two pipes 2 by waterproof glue. A water injection hole is provided in the annular water bag 16. After the annular water bag 16 is filled with water through the water injection hole, the water injection hole is connected to a plastic hose 17. The plastic hose 17 is connected to a water level gauge 18 arranged along the length direction of the pipe 2. The water level gauge 18 is bonded to the outer circle of the pipe 2. There is a small ball 19 with a clear mark in the water level gauge 18.

[0027] The flange spanning guide assembly includes a front cone 20, a middle cone 21 and a rear cone 2 which are coaxial with the pipe 2. The front cone 20 is smaller in front and larger in back, while the rear cone 2 is smaller in back and larger in front. The front end of the front cone 20 contacts the outer circle of the pipe 2 on the front side of the flange 5, the front and rear ends of the middle cone 21 are docked with the rear end of the front cone 20 and the front end of the rear cone 2 respectively, and the rear end of the rear cone 2 contacts the outer circle of the pipe 2 on the rear side of the flange 5. The outer circle of the pipe 2 on the front side of the flange 5 is provided with a front bracket 23 connected to the inner circle of the front cone 20, and the outer circle of the pipe 2 on the rear side of the flange 5 is provided with a rear bracket 24 connected to the inner circle of the rear cone 2; a small hole for passing the water level gauge 18 is opened on the front side of the front cone 20 or the rear side of the rear cone 2.

[0028] The working process of the utility model comprises the following steps:

[0029] S1. Install the flow meter on the installation;

[0030] S2. Install a flange leakage visualization component on a pair of flanges between two adjacent pipes; the details are as follows:

[0031] Put the annular water bag 16 on the outside of a pair of flanges 5, use resin glue to glue the front annular mouth of the annular water bag 16 to the outer circle of the pipe 2 on the front side of the flange 5, and then use resin glue to glue the rear annular mouth of the annular water bag 16 to the outer circle of the pipe 2 on the rear side of the flange 5, and then inject water into the annular water bag 16 through the water injection hole on the upper part of the annular water bag 16. The water will completely submerge the flange 5, and then use the plastic hose 17 to connect it to the water injection hole through a quick connector, and then glue the plastic hose 17 and the water level gauge 18 to the pipe 2 along the length direction of the pipe 2.

[0032] S3. Set flange spanning guide components on the outside of each pair of flanges; the details are as follows:

[0033] The front cone 20, the middle cone 21 and the rear cone 2 all adopt a two-half structure. First, the inner end of the front bracket 23 is bonded to the outer circle of the front pipe 2, and then the two inner circles of the front cone 20 are bonded to the outer end of the front bracket 23. At the same time, the front end of the front cone 20 is bonded to the outer circle of the front pipe 2, and the connecting seam between the two halves of the front cone 20 is also bonded. Then, the inner end of the rear bracket 24 is bonded to the outer circle of the rear pipe 2, and then the two inner circles of the rear cone 2 are bonded. It is bonded to the outer end of the rear bracket 24, the rear port of the rear cone 2 is bonded to the outer circle of the rear pipe 2, the water level gauge 18 passes through the small hole on the rear side of the rear cone 2, and the connecting seam between the two halves of the rear cone 2 is also bonded. Finally, the front and rear ends of the middle cylinder 21 are respectively bonded to the rear end of the front cone 20 and the front end of the rear cone 2, and the connecting seam between the two halves of the middle cylinder 21 is also bonded. The annular water bag 16 is located between the front bracket 23, the rear bracket 24 and the middle cylinder 21.

[0034] S4. When the gas flow counter value changes or becomes abnormal, it indicates that there is a gas leak in the pipeline. The inspection robot is started to inspect the pipeline to determine the source of the gas leak. The specific process is as follows:

[0035] When the gas flow meter 3 on the gas extraction main pipeline 1 shows an abnormal value, observe the gas flow meters 3 installed on each segmented pipeline 2 to find the pipeline 2 with abnormal flow, then open the annular shell of the inspection robot 4, put it on the pipeline 2, close the buckle structure 15, and the crawler walking device 6 on the inner circle of the inspection robot 4 contacts the outer circle of the segmented pipeline 2. Start the power of the inspection robot 4, and the inspection robot 4 moves along the pipeline 2 from front to back to perform visual gas leakage detection on the outer surface of the pipeline 2. If a leak is found somewhere in the pipeline 2, If there is air leakage at the top, an alarm will be sounded and the signal will be transmitted to the terminal or monitoring center; when passing through the flange 5, the crawler walking device 6 first moves backward along the outer circle of the front cone 20, and the crawler walking device 6 compresses the connected spring 7. After passing through the middle cylinder 21, and then passing through the rear cone 2, the spring 7 extends; the high-resolution camera 8 observes the small ball 19 in the water level gauge 18. If the small ball 19 fluctuates in the water level gauge 18, it means that the flange 5 here is leaking, and an alarm will be sounded at the same time, and the signal will be transmitted to the terminal or monitoring center.

[0036] It should be emphasized that the crawler walking device, spring, high-resolution camera, LED lighting beads, control chip, signal transmission module, power battery and backup power battery in the inspection robot in the utility model are all existing technologies and can be purchased and assembled on the market. The automatic control and signal transmission involved do not involve new computer programs.

[0037] The above embodiments illustrate the basic principles and features of the present invention. However, the above merely illustrates preferred embodiments of the present invention and is not intended to limit the present invention to the embodiments described. Persons skilled in the art, inspired by this patent, may make various modifications and improvements without departing from the spirit of the present invention and the scope of protection of the claims, all of which fall within the scope of protection of the present invention. Therefore, the patent and scope of protection of this utility model shall be subject to the appended claims.

Claims

1. A pipeline leakage detection and positioning device, characterized by: It includes an inspection robot, a flange leakage visualization component and a flange spanning guide component. The two adjacent front and rear pipes are connected by a pair of flanges and bolt assemblies. The flange leakage visualization component wraps and seals the pair of flanges. The flange spanning guide component is arranged outside the flange and extends to the outer circle of the front pipe and the outer circle of the rear pipe. The inspection robot is arranged on the pipeline and moves along the pipeline to perform visual inspection of the pipeline surface and the flange leakage visualization component.

2. A pipeline leakage detection and positioning device according to claim 1, characterized in that: The inspection robot includes a circular cylindrical shell, and at least three crawler walking devices are evenly arranged along the circumference of the inner circle of the circular cylindrical shell. Each crawler walking device is connected to the inner circle of the circular cylindrical shell through at least two springs. The inside of the circular cylindrical shell is equipped with several high-resolution cameras, several LED lighting beads, a control chip, a signal transmission module, a power battery and a backup power battery. The control chip is integrated with a computer vision leakage detection model.

3. A pipeline leakage detection and positioning device according to claim 2, characterized in that: The annular cylindrical shell includes two semi-cylindrical shells, and one end and the other end of the two semi-cylindrical shells are connected by a hinge and a snap structure respectively.

4. A pipeline leakage detection and positioning device according to any one of claims 1 to 3, characterized in that: The flange leakage visualization component includes an annular water bag that wraps a pair of flanges. The annular water bag is sealed to the two pipes with waterproof glue. A water injection hole is provided in the annular water bag. After the annular water bag is filled with water through the water injection hole, the water injection hole is connected to a plastic hose. The plastic hose is connected to a water level gauge arranged along the length of the pipe. The water level gauge is bonded to the outer circle of the pipe. There is a small ball with a clear mark in the water level gauge.

5. The pipeline leakage detection and positioning device according to claim 4, characterized in that: The flange spanning guide assembly includes a front cone cylinder, a middle cylinder and a rear cone cylinder which are coaxial with the pipeline. The front cone cylinder is smaller in front and larger in rear, while the rear cone cylinder is smaller in rear and larger in front. The front end of the front cone cylinder contacts the outer circle of the pipeline on the front side of the flange, the front and rear ends of the middle cylinder are docked with the rear end of the front cone cylinder and the front end of the rear cone cylinder respectively, and the rear end of the rear cone cylinder contacts the outer circle of the pipeline on the rear side of the flange. The outer circle of the pipeline on the front side of the flange is provided with a front bracket connected to the inner circle of the front cone cylinder, and the outer circle of the pipeline on the rear side of the flange is provided with a rear bracket connected to the inner circle of the rear cone cylinder; a small hole for passing a water level gauge is opened on the front side of the front cone cylinder or the rear side of the rear cone cylinder.

Images