A device and method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline

Abstract

This invention relates to the field of oil and gas pipeline inspection technology, and more particularly to a device and method for detecting and locating the radiation dose on the inner wall of an oil and gas pipeline. The device includes a support component, the oil and gas pipeline to be inspected, and a detection component for inspecting the pipeline, all mounted on the support component. A power component for controlling the movement of the detection component is also installed on the support component. The detection component is electrically connected to a control console. The power component includes a cable chain connecting the detection component, and the cable chain is controlled by a motor for winding and extending. By employing a cable chain system and controlling the movement of the cable chain by a motor, rapid and accurate positioning of the detection component is achieved, effectively improving inspection efficiency and data accuracy. Through initial screening and detailed inspection using a nuclear detector, the specific locations where the radiation dose on the inner wall of the pipeline exceeds a set value can be accurately pinpointed, thereby quickly identifying and locating the source of contamination.

Description

Technical Field

[0001] This invention relates to the field of oil and gas pipeline inspection technology, and in particular to a device and method for detecting and locating the radioactive dose on the inner wall of an oil and gas pipeline. Background Technology

[0002] In the oil and gas industry, naturally occurring radioactive materials (NORMs) are a frequent problem encountered during extraction, processing, transportation, and storage. NORMs, an abbreviation for "Naturally Occurring Radioactive Materials," are widely found in rocks, soil, water, and certain minerals. During oil and gas production, particularly in refining, physical and chemical changes can lead to an increase in the concentration of certain radioactive isotopes. Although the radioactivity levels of NORM waste are generally low, long-term or large-scale exposure can still pose a threat to the environment and human health. Therefore, effective monitoring, sorting, treatment, transportation, and final disposal of NORM waste are crucial to ensure compliance with radiation protection and environmental protection standards.

[0003] Currently, there is a gap in China's technology for detecting radioactivity on the inner walls of oil and gas pipelines, particularly in the detection of pipelines contaminated with associated NORM waste and the transmission of long-distance detectors. This patent aims to solve these problems by developing a radioactivity dose detection and positioning device for the inner walls of oil and gas pipelines. This device improves detection efficiency and accuracy while reducing risks to the environment and operators, filling a technological gap in this field in China. Summary of the Invention

[0004] In view of the problems existing in the current coolable high UV aging test chamber, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a device and method for detecting and locating radioactive doses on the inner wall of oil and gas pipelines, with the aim of solving the problems of pipeline detection and long-distance detector transmission for NORM waste pollution on the inner wall of oil and gas pipelines in China.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a radiation dose detection and positioning device for the inner wall of an oil and gas pipeline, comprising a support component, an oil and gas pipeline to be detected and a detection component for detecting the pipeline, both mounted on the support component, and a power component for controlling the movement of the detection component mounted on the support component, wherein the detection component is electrically connected to a control console.

[0007] The power unit includes a cable chain connected to the detection unit, the cable chain being controlled by a motor to retract and extend.

[0008] As a preferred embodiment of the radiation dose detection and positioning device for the inner wall of oil and gas pipelines according to the present invention, the supporting component is divided into a supporting platform and a supporting frame. The supporting platform is used to install the power component and the detection component, and the supporting frame is used to place the oil and gas pipeline to be detected. The supporting platform is configured as a slope, and the supporting frame is located at its lowest point.

[0009] In a preferred embodiment of the radiation dose detection and positioning device for the inner wall of an oil and gas pipeline according to the present invention, one end of the drag chain is wound around a take-up reel, which is mounted at the highest point of the support platform by a bracket, and the take-up reel is fixed to the first motor in the motor.

[0010] As a preferred embodiment of the radiation dose detection and positioning device for the inner wall of oil and gas pipelines according to the present invention, a roller is further provided at any position on the path of the drag chain. The roller is used to control the movement and extension of the drag chain. The roller is mounted on the support platform by a bracket, and the roller is fixed to the second motor in the motor.

[0011] In a preferred embodiment of the radiation dose detection and positioning device for the inner wall of oil and gas pipelines described in this invention, a plurality of limiting members are further provided at any position on the path of the drag chain movement, and the limiting members are used to guide the movement direction of the drag chain.

[0012] As a preferred embodiment of the radiation dose detection and positioning device for the inner wall of oil and gas pipelines described in this invention, each of the limiting components includes left and right limiting plates, and a rotating rod mounted on the left and right limiting plates via bearings.

[0013] In a preferred embodiment of the radiation dose detection and positioning device for the inner wall of an oil and gas pipeline according to the present invention, the detection component is installed at the other end of the drag chain, and the detection component is a nuclear detector.

[0014] As a preferred embodiment of the radiation dose detection and positioning device for the inner wall of an oil and gas pipeline according to the present invention, the detection component includes a first circumferential fixing member and a second circumferential fixing member disposed at both ends of the nuclear detector, wherein the diameters of the first circumferential fixing member and the second circumferential fixing member are the same as the inner diameter of the oil and gas pipeline to be detected.

[0015] In a preferred embodiment of the radiation dose detection and positioning device for the inner wall of oil and gas pipelines described in this invention, the control console and the detection component communicate wirelessly. When radioactive particles or rays pass through the detector, they interact with the detector material, generating charges, light, or other signals. These signals are then amplified and processed by the detector's electronic system. The signals generated by the detector are converted into electrical signals, and then into digital signals by an analog-to-digital converter (ADC). The digital signals are then sent to the microprocessor or computer system of the control console for counting, energy spectrum analysis, and time analysis of the signals, and are displayed numerically, graphically, or as images.

[0016] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a method for detecting and locating radioactive doses on the inner wall of an oil and gas pipeline, comprising the aforementioned device for detecting and locating radioactive doses on the inner wall of an oil and gas pipeline, and...

[0017] Place the oil and gas pipeline to be inspected onto the support components, determine the pipe diameter, and replace the first and second circumferential fasteners with the corresponding diameters.

[0018] Adjust the height of the support frame to keep the oil and gas pipeline to be inspected and the axis of the nuclear detector at the same level;

[0019] The detection component is moved into the oil and gas pipeline to be inspected by moving the drag chain controlled by the motor.

[0020] The nuclear detector first screens the oil and gas pipelines to be inspected, and calibrates the locations where the radiation dose exceeds the set value, thereby determining the location of contamination.

[0021] After initial screening to determine the location of contamination inside the pipeline, the selection of points begins. Each marked point is then thoroughly inspected, and the cable chain is controlled to move slowly near the marked point while detailed data is collected using a nuclear detector.

[0022] After all marker points have been detected, detailed data of the marker points is generated in the console, and the drag chain is controlled to return to the initial position, thus ending the detection.

[0023] The beneficial effects of this invention are as follows: The use of a cable chain system, with motor-controlled cable chain movement, enables rapid and precise positioning of the detection components, effectively improving detection efficiency and data accuracy. Furthermore, the design of circumferential fixing components and limiting structures enhances the adaptability and stability of the equipment, reduces wear, and extends equipment lifespan. Through initial screening and detailed detection using nuclear detectors, the specific locations where the radiation dose on the inner wall of the pipeline exceeds a set value can be accurately pinpointed, thereby quickly identifying and locating the contamination source. Simultaneously, automated data processing and a remote operating interface improve operational convenience and safety, making this method applicable not only to pipelines of various sizes and shapes, but also providing a reliable and economical solution for radioactive contamination detection in oil and gas pipelines. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the detection process structure of the present invention. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the detection process structure of the present invention. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 4 This is a top view of the structure of the present invention.

[0029] In the picture:

[0030] 100. Supporting component; 101. Support platform; 102. Support frame;

[0031] 200. Detection component; 201. Nuclear detector; 202. First circumferential fixing component; 203. Second circumferential fixing component;

[0032] 300. Power component; 301. Cable chain; 302. Motor; 302a. First motor; 302b. Second motor; 303. Rewinding reel; 304. Roller; 305. Limiting component;

[0033] 400, Console. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0038] Example 1

[0039] Reference Figures 1-4 The first embodiment of the present invention provides a radioactive dose detection and positioning device for the inner wall of an oil and gas pipeline, including a support component 100, an oil and gas pipeline to be detected and a detection component 200 for detecting the pipeline, both mounted on the support component 100. A power component 300 for controlling the movement of the detection component 200 is also mounted on the support component 100. The detection component 200 is electrically connected to a control console 400. The power component 300 includes a drag chain 301 connected to the detection component 200. The drag chain 301 is controlled by a motor 302 to retract and extend.

[0040] It should be noted that the advantages of using a cable chain 301 as the power component 300 of the detection component 200 are: (1) Stability and reliability: The cable chain 301 provides a stable and reliable method to move the detection component 200. Due to the physical connection between the cable chain 301 and the take-up wheel 303 and roller 304, it can maintain stable tension under various environmental conditions, ensuring that the detection component 200 moves smoothly in the pipeline. (2) Precise control: By precisely controlling the take-up wheel 303 and roller 304 through the motor 302, the moving speed and direction of the cable chain 301 can be precisely adjusted, thereby achieving precise control of the position of the detection component 200. This is crucial for ensuring the accuracy and consistency of the detection data. (3) Strong adaptability: The cable chain 301 system can adapt to pipelines of different lengths and diameters. By replacing the cable chain 301 of different lengths, the moving range of the detection component 200 can be easily adjusted to make it suitable for pipelines of various sizes. (4) Easy maintenance: The design of the cable chain 301 allows for quick replacement and maintenance. If the cable chain 301 or its components are worn or damaged, they can be easily replaced, reducing downtime. (5) Data quality: Since the cable chain 301 can provide stable tension and precise control, higher quality data can be collected, reducing data errors caused by unstable movement of the probe component 200.

[0041] A method for detecting and locating the radiation dose inside an oil and gas pipeline includes an oil and gas pipeline radiation dose detection and location device, and a method for placing the oil and gas pipeline to be detected on a support component 100, determining the pipe diameter, and replacing the first circumferential fixing component 202 and the second circumferential fixing component 203 of the corresponding diameter; adjusting the height of the support frame 102 so that the oil and gas pipeline to be detected and the axis of the nuclear detector 201 are kept on the same horizontal line; the drag chain 301 is controlled by a motor 302 to move the detection component 200 into the oil and gas pipeline to be detected; the nuclear detector 201 first performs a preliminary screening of the oil and gas pipeline to be detected, and marks the locations that exceed the set radiation dose value, thereby determining the contaminated locations; after determining the contaminated locations inside the pipeline through the preliminary screening, point selection begins, and detailed detection is performed on each marked point. The drag chain 301 is controlled to move slowly near the marked points, and detailed data is collected by the nuclear detector 201; after all marked points are detected, detailed data of the marked points are generated on the control console 400, and the drag chain 301 is controlled to return to the initial position, and the detection ends.

[0042] The above method has the following significant beneficial effects: (1) Precisely locates the pollution source: Through the initial screening and detailed detection of the nuclear detector 201, the specific location where the radiation dose on the inner wall of the pipeline exceeds the set value can be accurately identified, thereby quickly identifying and locating the pollution source. (2) Improves detection efficiency: By using the motor 302 to control the movement of the drag chain 301, the rapid insertion and withdrawal of the detection component 200 is realized, which significantly improves the detection speed, reduces the detection time, and improves the overall detection efficiency. (3) Enhances the adaptability of detection: By replacing the circumferential fixing parts that match the diameter of the pipeline, the detection device can adapt to pipelines of different sizes, enhancing the versatility and adaptability of the detection method. (4) Ensures data accuracy: The smooth movement and precise positioning of the nuclear detector 201 on the inner wall of the pipeline helps to collect more accurate and consistent data, reducing data errors caused by the unstable movement of the detector. (5) Simple and safe operation: Operators can remotely control the detection component 200 through the control panel, avoiding the risk of direct contact with radioactive materials and improving the safety and convenience of operation. (6) Reduced equipment wear: The design of the circumferential fixing component reduces the direct contact between the nuclear detector 201 and the inner wall of the pipeline, reducing detector wear and extending the service life of the equipment. (7) Automated data processing: Detailed data reports of marked points are automatically generated on the control console 400, simplifying the data processing process and improving the automation and accuracy of data processing.

[0043] In summary, the radiation dose detection and positioning method for the inner wall of oil and gas pipelines in this patent, through its innovative design and automated detection process, not only improves the accuracy and efficiency of detection, but also reduces operational risks and maintenance costs, providing a strong guarantee for the safe operation of oil and gas pipelines.

[0044] The support component 100 is divided into a support platform 101 and a support frame 102. The support platform 101 is used to install the power component 300 and the detection component 200, and the support frame 102 is used to place the oil and gas pipeline to be inspected. The support platform 101 is set in the form of a slope, and the support frame 102 is located at its lowest point.

[0045] It should be noted that the support component 100 includes a sloping support platform 101, the bottom of which is a platform flush with the support frame 102. In this structure, the power unit 300 is positioned at the highest point, while the detection component 200 is located on the platform, and the support frame 102 itself is at the lowest point. This layout ensures that the oil and gas pipeline to be inspected, when placed on the support frame 102, is also at its lowest position. The advantage of this design is that it allows the operator to easily insert the detection component 200 into the pipeline at the lower level using the power unit 300, which is located at a higher position. Due to the sloping design, the cable chain 301 can descend naturally under its own weight, which, combined with the driving force of the motor 302, makes it easier for the detection component 200 to be inserted into the pipeline.

[0046] In summary, this structure is designed to simplify the insertion process of the probe 200 and is driven by the gravity-assisted motor 302, making the entire detection operation more efficient and labor-saving. This layout also helps to reduce the mechanical stress on the probe 200 and the cable chain 301, thereby extending the service life of the equipment.

[0047] It should also be noted that the support frame 102 is T-shaped, and its support leg part is set as a telescopic sleeve, so the height of the support frame 102 is adjustable. It can be used with oil and gas pipelines of different diameters to ensure that the axis of the oil and gas pipeline to be tested is on the same horizontal line as the axis of the detection component 200.

[0048] One end of the drag chain 301 is wound around the take-up reel 303, which is mounted on the highest point of the support platform 101 by a bracket. The take-up reel 303 is fixed to the first motor 302a in the motor 302.

[0049] It should be noted that the first motor 302a drives the winding reel 303 to rotate in both directions. When the winding reel 303 rotates in the forward direction, the cable chain 301 wound around it is wound in, thereby pulling the detection component 200 connected to the other end of the cable chain 301 out of the oil and gas pipeline to be inspected. Conversely, when the winding reel 303 rotates in the reverse direction, the cable chain 301 is released, allowing the detection component 200 to be inserted into the pipeline. This design allows the detection component 200 to move flexibly within the pipeline, facilitating comprehensive detection of the radiation level on the pipeline wall. By controlling the forward and reverse rotation of the motor 302, the operator can precisely control the position of the detection component 200 within the pipeline, achieving efficient inspection operations.

[0050] Furthermore, a roller 304 is provided at any position on the path of the drag chain 301. The roller 304 is used to control the movement and extension of the drag chain 301. The roller 304 is mounted on the support platform 101 by a bracket, and the roller 304 is fixed to the second motor 302b in the motor 302.

[0051] In the detection system, rollers 304 and a second motor 302b are installed at any position along the path of the cable chain 301. The movement of the cable chain 301 is controlled collaboratively by the two motors 302. The first motor 302a drives the winding wheel 303, while the second motor 302b directly drives the rollers 304. The rollers 304 push or pull the cable chain 301 through friction with it, working in conjunction with the first motor 302a to precisely control the winding and unwinding of the cable chain 301. This control method has two different operating modes, each producing different effects:

[0052] Co-rotation: When the first motor 302a and the second motor 302b rotate in the same direction, they jointly drive the cable chain 301 to move in the same direction. This mode is suitable for situations where the detection component 200 needs to be quickly inserted into or pulled out of a pipe. In this mode, the moving speed of the cable chain 301 is determined by the rotational speeds of the two motors 302, which can achieve more efficient positioning of the detection component 200.

[0053] Reverse rotation: When the first motor 302a and the second motor 302b rotate in opposite directions, one motor 302 is responsible for winding up the cable chain 301, while the other motor 302 is responsible for releasing the cable chain 301. This mode is suitable for situations requiring precise control of the movement of the detection component 200 at a specific location within the pipeline. For example, when detecting areas with high levels of radioactivity, it is necessary to move the detection component 200 slowly to collect more detailed data. Reverse rotation allows for more precise control to adapt to different detection needs.

[0054] Through this dual-motor 302 control mechanism, the system can flexibly adjust the moving speed and direction of the cable chain 301, ensuring that the detection component 200 can be accurately positioned at any location inside the pipe, whether quickly passing through the pipe or finely scanning a specific area. This design improves the flexibility and efficiency of the detection process, while also enhancing the reliability of the system.

[0055] Multiple limiting members 305 are also provided at any position along the moving path of the cable chain 301. The limiting members 305 are used to guide the moving direction of the cable chain 301. Each limiting member 305 includes left and right limiting plates, and a rotating rod mounted on the left and right limiting plates by bearings.

[0056] It should be noted that, in order to ensure the stability and accuracy of the cable chain 301 during operation, at least one limiting member 305 is provided in front of the winding wheel 303 and the roller 304 respectively. The main function of these limiting members 305 is to guide the movement direction of the cable chain 301 and prevent it from deviating during movement. In this way, we can ensure that the detection component 200 moves in a straight line inside the oil and gas pipeline to be detected, thereby improving the accuracy of detection.

[0057] Specifically, we installed a limiting plate on each of the left and right sides. The main function of these two limiting plates is to restrict the displacement of the cable chain 301 in the left and right directions, ensuring that it always stays on the center line of the pipeline. In addition, we also installed a rotating rod above the left and right limiting plates. This rotating rod can rotate with the movement of the cable chain 301, further coordinating and guiding the movement of the cable chain 301, ensuring its stability and accuracy during movement. In summary, by setting limiting elements 305 in front of the take-up reel 303 and roller 304, and by setting limiting plates and rotating rods on the left and right sides, we can effectively guide and control the movement of the cable chain 301, ensuring that the detection component 200 moves in a straight line within the pipeline. This design not only improves the accuracy of detection but also reduces equipment damage and detection errors caused by the deviation of the cable chain 301, thereby improving the reliability and efficiency of the entire detection system.

[0058] Example 2

[0059] Reference Figures 1-3 This is the second embodiment of the present invention, which differs from the first embodiment in that the detection component 200 is a nuclear detector 201. The control console 400 and the detection component 200 communicate wirelessly. When radioactive particles or rays pass through the detector, they interact with the detector material, generating charges, light, or other signals. These signals are then amplified and processed by the detector's electronic system. The signals generated by the detector are converted into electrical signals, and then into digital signals via an analog-to-digital converter (ADC). The digital signals are then sent to the microprocessor or computer system of the control console 400 for signal counting, energy spectrum analysis, time analysis, and display as numerical values, charts, or images.

[0060] It should be noted that nuclear detectors 201 are typically based on some type of sensor, such as a Geiger-Müller counter, a scintillation detector, or a semiconductor detector. These sensors are capable of detecting signals generated by the interaction of radioactive particles or rays (such as alpha particles, beta particles, gamma rays, and X-rays) with the detector material. When radioactive particles or rays pass through the detector, they interact with the detector material, generating electrical charges, light, or other signals, which are then amplified and processed by the detector's electronic system.

[0061] The signal generated by the detector is converted into an electrical signal, and then into a digital signal by an analog-to-digital converter (ADC) for further digital processing. The digital signal is then sent to a microprocessor or computer system for further analysis and processing. This may include signal counting, energy spectrum analysis, time analysis, etc. The processed data is transmitted to the control console 400 in real time, typically via wired or wireless communication.

[0062] The software system of the control console 400 receives this data and converts it into a user-understandable form, such as numerical values, charts, or images. The screen on the control console 400 displays the radioactivity level of the pipe wall being inspected, which may be in the form of numerical values, color coding, or charts. If the radioactivity level exceeds a preset safety threshold or standard, the software system marks these locations on the screen, such as by highlighting, flashing, or changing color. These marked locations can be used for subsequent detailed inspections to determine the exact location and extent of contamination. Data collected during the inspection process can be recorded and stored for subsequent analysis and reporting. This data can be used to assess the radioactive contamination status of the pipeline, develop cleaning or maintenance plans, and meet regulatory requirements. Through this real-time feedback and marking system, operators can quickly identify and locate radioactive hotspots inside the pipeline, enabling appropriate measures to address these potential contamination problems.

[0063] For example: Nuclear Detector 201: Select a high-sensitivity gamma-ray scintillation detector suitable for detecting the radioactivity level of the pipe's inner wall. Place the pipe on the detection platform, ensuring that the pipe's axis and the detector's axis are on the same horizontal line. Start the console 400 software and set the safety threshold for the radioactivity level. The operator starts motor 302, and the detector begins to move along the inner wall of the pipe. The gamma rays detected by the detector interact with the scintillation material, generating light signals. These light signals are converted into electrical signals, which are then converted into digital signals by an analog-to-digital converter and processed by a microprocessor for energy spectrum analysis. The processed data is transmitted to the console 400 in real time via a wireless communication module. The console 400 software receives the data and displays it on the screen in graphical form. The screen on the console 400 displays the radioactivity level of the pipe's inner wall in real time, using color coding to represent different radiation intensities. When the detected radioactivity level exceeds the preset safety threshold, the corresponding position on the screen will be highlighted or flashed to alert the operator. The operator notices a high-radiation area and controls the detector to move slowly in the vicinity of the area to collect more detailed data. The collected data is recorded and stored for subsequent analysis and reporting. After the entire pipeline inspection is completed, the console 400 generates a detailed report, including the location and radiation level of all marked high-radiation areas. Based on the report, the operator decides whether specific areas need to be cleaned or repaired.

[0064] The detection component 200 includes a first circumferential fixing member 202 and a second circumferential fixing member 203 disposed at both ends of the nuclear detector 201. The diameters of the first circumferential fixing member 202 and the second circumferential fixing member 203 are the same as the inner diameter of the oil and gas pipeline to be detected.

[0065] It should be noted that the first circumferential fixing member 202 and the second circumferential fixing member 203 are detachable, thus allowing for the rapid removal and replacement of the nuclear detector 201. This is extremely useful during maintenance and repair, enabling regular cleaning and maintenance to maintain the detector's performance and accuracy. For example, if the nuclear detector 201 requires calibration, replacement, or upgrade, operators can easily remove the first circumferential fixing member 202 and the second circumferential fixing member 203 to remove the detector for the necessary operations.

[0066] Since the diameters of the first circumferential fixing member 202 and the second circumferential fixing member 203 match the inner diameter of the pipe, the detector is kept centered when moving inside the pipe, avoiding direct contact with the inner wall of the pipe. This design helps the detector move smoothly inside the pipe, reducing friction and wear, which not only protects the detector but also extends its service life and reduces maintenance costs.

[0067] Furthermore, the first circumferential fixing member 202 and the second circumferential fixing member 203 are made of wear-resistant materials, such as stainless steel or special plastics, to further improve durability and chemical stability. The outer wall of the circumferential fixing member may include special bearings or rollers 304 to further reduce friction with the inner wall of the pipe, allowing the detector to move more smoothly within the pipe. The circumferential fixing members need to be equipped with quick-release mechanisms, such as snap-fit ​​or threaded connections, for rapid disassembly and installation. To accommodate pipes of different diameters, a series of circumferential fixing members of different diameters needs to be designed, which can be quickly replaced to adapt to different inspection tasks. The design of the circumferential fixing members also includes sealing rings to ensure the detector's sealing performance in high-pressure or corrosive environments.

[0068] In summary, the design of the circumferential fixing component not only improves the operational convenience of the nuclear detector 201, but also significantly improves the detector's durability and service life by reducing direct contact with the inner wall of the pipeline, thus providing an efficient and economical solution for radioactive detection in oil and gas pipelines.

[0069] The remaining structure is the same as that in Example 1.

[0070] Example 3

[0071] Reference Figures 1-2 This is the third embodiment of the present invention, which differs from the second embodiment in that:

[0072] First, the oil and gas pipeline to be inspected is transported to the inspection area and carefully placed onto a pre-set support member 100. The support member 100 is designed to securely support and fix the pipeline.

[0073] Before starting the inspection, the inner diameter of the pipe is accurately measured using calipers or a laser diameter gauge to ensure the selection of the correct diameter first circumferential fastener 202 and second circumferential fastener 203. These circumferential fasteners will be installed at both ends of the nuclear detector 201 to protect the nuclear detector 201 and ensure its centering within the pipe.

[0074] Inspect all equipment, including motor 302, cable chain 301, console 400, and nuclear detector 201, to ensure they are in good working order.

[0075] Based on the measured inner diameter of the pipe, select a first circumferential fixing member 202 and a second circumferential fixing member 203 of appropriate diameter and install them at both ends of the nuclear detector 201. Ensure that the fixing members are securely installed and will not loosen during the detection process.

[0076] Adjust the height of the support frame 102 until the axis of the oil and gas pipeline to be inspected is perfectly aligned with the axis of the nuclear detector 201. This step is crucial to ensuring smooth movement of the detector within the pipeline and accurate detection.

[0077] Motor 302 controls the movement of cable chain 301, slowly sending the detection component 200, equipped with nuclear detector 201, into the oil and gas pipeline to be inspected. During this process, the position of the detector and the pipeline's response are closely monitored to ensure there are no obstructions or other problems.

[0078] Nuclear detector 201 begins initial screening of the radiation levels of the oil and gas pipelines to be inspected. During this phase, the detector will move rapidly to cover a large area of ​​the pipeline.

[0079] The software on console 400 automatically marks locations exceeding a preset radiation dose value. These locations may be areas of potential radioactive contamination.

[0080] Once the initial screening identifies the location of contamination inside the pipeline, operators will select these marked points for more detailed testing.

[0081] The control chain 301 moves slowly near each marker point, during which the nuclear detector 201 collects more precise radioactive data.

[0082] After a detailed inspection of all markers is completed, the software on console 400 will automatically generate a detailed radioactivity data report for each marker.

[0083] Operators can review this data to assess the extent of contamination and its potential sources, and develop cleaning or maintenance plans accordingly.

[0084] After confirming that all data has been successfully recorded and saved, the operator will control the cable chain 301 to slowly pull the nuclear detector 201 back to its initial position.

[0085] Once the detector is completely removed from the pipeline, shut down all equipment and perform necessary equipment cleaning and maintenance.

[0086] Based on the detailed data report generated by console 400, take necessary measures to address radioactive contamination within the pipeline, such as cleaning, repairing, or replacing contaminated sections.

[0087] Regular inspections and maintenance are necessary to ensure that the radioactivity levels of the pipeline remain within safe standards.

[0088] This detailed and comprehensive workflow ensures that the radiation dose level inside oil and gas pipelines is accurately and effectively detected, thereby guaranteeing the safe operation of the pipelines and the protection of the environment.

[0089] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0090] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0091] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline, the method employing a device for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline, characterized in that... The device includes: The support component (100), the oil and gas pipeline to be inspected, and the detection component (200) for inspecting the pipeline are all installed on the support component (100). A power component (300) for controlling the movement of the detection component (200) is also installed on the support component (100). The detection component (200) is electrically connected to the control console (400). The power unit (300) includes a cable chain (301) connected to the detection unit (200), the cable chain (301) being controlled by a motor (302) to retract and extend; The support component (100) is divided into a support platform (101) and a support frame (102). The support platform (101) is used to install the power component (300) and the detection component (200). The support frame (102) is used to place the oil and gas pipeline to be detected. The support platform (101) is set in a sloping form, and the support frame (102) is located at its lowest point. The detection component (200) is installed at the other end of the drag chain (301), and the detection component (200) includes a nuclear detector (201). The detection component (200) also includes a first circumferential fixing member (202) and a second circumferential fixing member (203) respectively disposed at both ends of the nuclear detector (201), wherein the diameters of the first circumferential fixing member (202) and the second circumferential fixing member (203) are the same as the inner diameter of the oil and gas pipeline to be detected; The method specifically includes: Place the oil and gas pipeline to be inspected onto the support component (100), determine the pipe diameter, and replace the first circumferential fixing component (202) and the second circumferential fixing component (203) of the corresponding diameter. Adjust the height of the support frame (102) so that the oil and gas pipeline to be inspected is on the same horizontal line as the axis of the nuclear detector (201); The motor (302) controls the movement of the drag chain (301) to move the detection component (200) into the oil and gas pipeline to be detected; The nuclear detector (201) first screens the oil and gas pipelines to be inspected. During this stage, the nuclear detector (201) moves quickly to calibrate the locations where the radiation dose exceeds the set value, thereby determining the contaminated locations. After initial screening to determine the location of contamination inside the pipeline, point selection begins. Each marked point is then thoroughly inspected. The drag chain (301) is controlled to slowly move the detection component (200) near the marked point, and detailed data is collected through the nuclear detector (201). After all marker points have been detected, detailed data of the marker points is generated in the console, and the drag chain (301) is controlled to return to the initial position, and the detection ends.

2. The method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline according to claim 1, characterized in that: One end of the drag chain (301) is wound around a take-up reel (303), which is mounted on the highest point of the support platform (101) by a bracket. The take-up reel (303) is fixed to the first motor (302a) in the motor (302).

3. The method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline according to claim 2, characterized in that: A roller (304) is also provided at any position on the path of the drag chain (301). The roller (304) is used to control the movement and extension of the drag chain (301). The roller (304) is mounted on the support platform (101) by a bracket, and the roller (304) is fixed to the second motor (302b) in the motor (302).

4. A method for detecting and locating radioactive doses on the inner wall of an oil and gas pipeline according to claim 2 or 3, characterized in that: Multiple limiting members (305) are also provided at any position on the path of the drag chain (301) to guide the movement direction of the drag chain (301).

5. The method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline according to claim 4, characterized in that: Each of the aforementioned limiting members (305) includes left and right limiting plates, and a rotating rod mounted on the left and right limiting plates via bearings.

6. The method for detecting and locating radioactive dose on the inner wall of an oil and gas pipeline according to claim 1, characterized in that: The console (400) and the detection component (200) communicate wirelessly. When radioactive particles or rays pass through the detector, they interact with the detector material to generate charges, light, or other signals. These signals are then amplified and processed by the detector's electronic system. The signals generated by the detector are converted into electrical signals and then into digital signals by an analog-to-digital converter (ADC). The digital signals are then sent to the microprocessor or computer system of the console (400) for counting, energy spectrum analysis, and time analysis of the signals, and are displayed in numerical, graphical, or graphical form.

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