Device and method for detecting and positioning radioactive dose on inner wall of petroleum and natural gas pipeline

Abstract

The invention relates to the technical field of petroleum and natural gas pipeline detection, in particular to a petroleum and natural gas pipeline inner wall radioactive dose detection positioning device and method.The petroleum and natural gas pipeline inner wall radioactive dose detection positioning device comprises a supporting component, and a to-be-detected petroleum and natural gas pipeline and a detection component used for detecting the pipeline are both installed on the supporting component; a power part used for controlling the detection part to move is further installed on the supporting part, the detection part is electrically connected to the control table, the power part comprises a drag chain connected with the detection part, and the drag chain is controlled by a motor to be wound, stretched and retracted. The drag chain system is adopted, the drag chain is controlled by the motor to move, rapid and accurate positioning of the detection component is achieved, and the detection efficiency and the data accuracy are effectively improved. Through preliminary screening and detailed detection of the nuclear detector, the specific position where the radiation dose of the inner wall of the pipeline exceeds a set value can be accurately calibrated, and therefore the pollution source can be rapidly recognized and positioned.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas pipeline detection, and in particular to a device and method for detecting and positioning radioactive dose on the inner wall of an oil and gas pipeline. Background Art

[0002] In the oil and gas industry, naturally occurring radioactive materials (NORM) are a common problem encountered during mining, processing, transportation and storage. NORM is the abbreviation of "Naturally Occurring Radioactive Materials" and is widely found in rocks, soil, water bodies and certain minerals. During the production of oil and gas, especially in the refining process, physical and chemical changes may lead to an increase in the concentration of certain radioactive isotopes. Although the radioactivity level of NORM waste is generally not high, long-term or large-scale exposure may still pose a threat to the environment and human health. Therefore, it becomes particularly important to effectively monitor, classify, handle, transport and finally dispose of NORM waste to ensure that the standards of radiation protection and environmental protection are met.

[0003] At present, there is still a gap in the detection of radioactivity on the inner wall of oil and gas pipelines in China, especially in the detection of pipelines contaminated by NORM waste and the transmission of long-distance detectors. This patent aims to solve these problems by developing a radioactive dose detection and positioning device for the inner wall of oil and gas pipelines to improve detection efficiency and accuracy, while reducing risks to the environment and operators, filling the domestic technical gap in this field. Summary of the invention

[0004] In view of the above problems existing in the existing refrigerated high-ultraviolet aging test box, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a device and method for detecting and positioning radioactive dose on the inner wall of an oil and gas pipeline, which aims to solve the domestic pipeline detection and long-distance detector transmission problems of NORM waste contamination on the inner wall of an oil and gas pipeline.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for detecting and positioning radioactive dose on the inner wall of an oil and gas pipeline, comprising a supporting component, on which an oil and gas pipeline to be detected and a detection component for detecting the pipeline are both mounted, and a power component for controlling the movement of the detection component is also mounted on the supporting component, and the detection component is electrically connected to a console.

[0007] The power component comprises a drag chain connected to the detection component, and the retraction and extension of the drag chain are controlled by a motor.

[0008] As a preferred solution of the radioactive dose detection and positioning device for the inner wall of an oil and gas pipeline described in the present invention, the supporting component is divided into a supporting platform and a supporting frame, the supporting platform is used to install power components and detection components, and the supporting frame is used to place the oil and gas pipeline to be detected, wherein the supporting platform is arranged in a slope form, and the supporting frame is located at its lowest point.

[0009] As a preferred solution of the radioactive dose detection and positioning device for the inner wall of an oil and gas pipeline described in the present invention, one end of the drag chain is wrapped around a winding wheel, which is installed at the highest point of the support platform through a bracket, and the winding wheel is fixed to the first motor in the motor.

[0010] As a preferred solution of the radioactive dose detection and positioning device for the inner wall of an oil and gas pipeline described in the present invention, a roller is also provided at any position on the moving path of the drag chain, the roller is used to control the movement and extension of the drag chain, the roller is installed on the support platform through a bracket, and the roller is fixed to the second motor in the motor.

[0011] As a preferred solution of the device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline of the present invention, a plurality of limit members are provided at any position on the moving path of the drag chain, and the limit members are used to guide the moving direction of the drag chain.

[0012] As a preferred solution of the device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline of the present invention, each of the limit members includes left and right limit plates, and a rotating rod installed on the left and right limit plates through bearings.

[0013] As a preferred solution of the device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline of 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 solution of the device for detecting and positioning the radioactive dose on the inner wall of an oil and gas pipeline of the present invention, the detection component includes a first circumferential fixing member and a second circumferential fixing member arranged at both ends of the nuclear detector, and 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] As a preferred solution of the device for detecting and positioning the radioactive dose on the inner wall of an oil and gas pipeline described in the present invention, the control console and the detection component communicate with each other by wireless communication. When radioactive particles or rays pass through the detector, they interact with the detector material to generate electric charge, light or other signals, which are then amplified and processed by the electronic system of the detector. The signal generated by the detector is converted into an electrical signal and then converted into a digital signal through an analog-to-digital converter (ADC). The digital signal is then sent to the microprocessor or computer system of the control console to count the signal, perform energy spectrum analysis, and time analysis, and display it in the form of numerical values, charts or images.

[0016] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for detecting and positioning the radioactive dose on the inner wall of an oil and gas pipeline, comprising the above-mentioned device for detecting and positioning the radioactive dose on the inner wall of an oil and gas pipeline, and,

[0017] Place the oil and gas pipeline to be inspected on the support component, determine the pipe diameter, and replace the first circumferential fixing member and the second circumferential fixing member of the corresponding diameter;

[0018] Adjust the height of the support frame so that the oil and gas pipeline to be inspected and the axis of the nuclear detector are on the same horizontal line;

[0019] The drag chain is controlled by a motor to move the detection component to the oil and gas pipeline to be inspected;

[0020] The nuclear detector first screens the oil and gas pipelines to be inspected, calibrates the locations that exceed the set radiation dose value, and thus determines the contaminated locations;

[0021] After the initial screening, the contaminated locations inside the pipeline are determined, and then the points are selected. Each marked point is tested in detail, and the drag chain is controlled to move slowly near the marked point, and detailed data is collected through the nuclear detector;

[0022] After all marking points are detected, detailed data of the marking points are generated on the console, and the drag chain is controlled to return to the initial position, and the detection is completed.

[0023] The beneficial effects of the present invention are as follows: by adopting a drag chain system and controlling the movement of the drag chain through a motor, the rapid and precise positioning of the detection components is achieved, the detection efficiency and data accuracy are effectively improved, and the adaptability and stability of the equipment are enhanced, the wear is reduced and the life of the equipment is extended through the design of circumferential fixings and limit structures. Through the initial screening and detailed detection of nuclear detectors, the specific location where the radiation dose on the inner wall of the pipeline exceeds the set value can be accurately calibrated, so as to quickly identify and locate the pollution source. At the same time, the automated data processing and remote operation interface improve the convenience and safety of operation, making this method not only suitable for pipelines of various sizes and shapes, but also providing a reliable and economical solution for the detection of radioactive contamination in oil and gas pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 The detection process structure of the present invention is shown in FIG. Figure 1 .

[0026] Figure 2 The detection process structure of the present invention is shown in FIG. Figure 2 .

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

[0028] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0029] In the figure:

[0030] 100, supporting member; 101, supporting platform; 102, supporting frame;

[0031] 200, detection component; 201, nuclear detector; 202, first circumferential fixing member; 203, second circumferential fixing member;

[0032] 300, power component; 301, drag chain; 302, motor; 302a, first motor; 302b, second motor; 303, reel; 304, roller; 305, limiter;

[0033] 400. Console. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Example 1

[0039] Reference Figure 1-Figure 4 , which is 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 supporting component 100, on which an oil and gas pipeline to be detected and a detection component 200 for detecting the pipeline are both installed, and a power component 300 for controlling the movement of the detection component 200 is also installed on the supporting component 100, and the detection component 200 is electrically connected to a control console 400, wherein the power component 300 includes a drag chain 301 connected to the detection component 200, and the drag chain 301 is controlled by a motor 302 to retract and extend.

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

[0041] A method for detecting and positioning the radioactive dose of the inner wall of an oil and gas pipeline comprises a device for detecting and positioning the radioactive dose of the inner wall of an oil and gas pipeline, and placing the oil and gas pipeline to be detected on a support component 100, determining the pipe diameter, and replacing a first circumferential fixing member 202 and a second circumferential fixing member 203 of corresponding diameters; adjusting the height of the support frame 102 so that the oil and gas pipeline to be detected and the axis of a nuclear detector 201 are kept on the same horizontal line; controlling the movement of a drag chain 301 by a motor 302 to move the detection component 200 into the oil and gas pipeline to be detected; the nuclear detector 201 firstly performs a preliminary screening on the oil and gas pipeline to be detected, and calibrates the position exceeding the set radiation dose value, so as to determine the contaminated position; after the contaminated position inside the pipeline is determined through the preliminary screening, point selection is started, and each marked point is detected in detail, and the drag chain 301 is controlled to move slowly near the marked point, and detailed data is collected by the nuclear detector 201; after the detection of all marked points is completed, the detailed data of the marked points are generated on the 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) Accurately locate 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 calibrated, thereby quickly identifying and locating the pollution source. (2) Improve detection efficiency: The motor 302 is used to control the movement of the drag chain 301, which realizes the rapid insertion and withdrawal of the detection component 200, significantly improves the detection speed, reduces the detection time, and improves the overall detection efficiency. (3) Enhance the adaptability of detection: By replacing the circumferential fixings that match the pipeline diameter, the detection device can adapt to pipelines of different sizes, enhancing the versatility and adaptability of the detection method. (4) Ensure data accuracy: The smooth movement and precise positioning of the nuclear detector 201 on the inner wall of the pipeline help to collect more accurate and consistent data, and reduce data errors caused by unstable detector movement. (5) Simple and safe operation: The operator 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) Reduce equipment wear: The design of the circumferential fixings reduces the direct contact between the nuclear detector 201 and the inner wall of the pipeline, reduces the wear of the detector, and extends the service life of the equipment. (7) Automated data processing: The console 400 automatically generates a detailed data report of the marked points, simplifies the data processing process, and improves the automation and accuracy of data processing.

[0043] In summary, the patented method for detecting and locating radioactive dose on the inner wall of oil and gas pipelines, 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] Among them, 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 detected. The support platform 101 is set in a slope form, and the support frame 102 is located at its lowest point.

[0045] It should be noted that the support component 100 includes a slope support platform 101, the bottom of which is a platform flush with the support frame 102. In this structure, the power component 300 is placed at the highest point, while the detection component 200 is located at the platform, and the support frame 102 itself is at the lowest point. Such a layout makes the oil and gas pipeline to be inspected, when placed on the support frame 102, also at the lowest position. The advantage of this design is that it is convenient for the operator to use the power component 300 located at a high position to insert the detection component 200 into the pipeline located at a low position for inspection. Due to the design of the slope, the drag chain 301 can naturally descend under the action of its own gravity. This, combined with the driving force of the motor 302, allows the detection component 200 to be inserted into the pipeline more easily.

[0046] In summary, the design of this structure aims to simplify the insertion process of the detection component 200 and promote it through the gravity-assisted motor 302, making the entire detection operation more efficient and labor-saving. Such a layout also helps to reduce the mechanical stress on the detection component 200 and the drag 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 supporting leg portion is configured as a telescopic sleeve, so that the height of the support frame 102 is adjustable to accommodate oil and gas pipelines of different diameters to be inspected, thereby ensuring that the axis of the oil and gas pipeline to be inspected and the detection component 200 are on the same horizontal line.

[0048] One end of the drag chain 301 is wound around a reel 303 . The reel 303 is installed at the highest point of the support platform 101 through a bracket. The reel 303 is fixed to a first motor 302 a in the motor 302 .

[0049] It should be noted that the reel 303 is driven by the first motor 302a to realize forward and reverse rotation. When the reel 303 rotates forward, the drag chain 301 wound thereon is drawn in, thereby pulling the detection component 200 connected to the other end of the drag chain 301 out of the oil and gas pipeline to be inspected; on the contrary, when the reel 303 reverses, the drag chain 301 is released, so that the detection component 200 can be inserted into the interior of the pipeline. This design allows the detection component 200 to move flexibly in the pipeline, so as to facilitate a comprehensive radioactivity level detection of the inner wall of the pipeline. By controlling the forward and reverse rotation of the motor 302, the operator can accurately control the position of the detection component 200 in the pipeline to achieve efficient detection operations.

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

[0051] In the detection system, a roller 304 and a second motor 302b are also provided at any position on the path of the drag chain 301. The movement of the drag chain 301 is controlled by the two motors 302. The first motor 302a is responsible for driving the winding wheel 303, while the second motor 302b directly drives the roller 304. The roller 304 pushes or pulls the movement of the drag chain 301 through the friction between the roller 304 and the drag chain 301, and cooperates with the first motor 302a to precisely control the winding and release of the drag chain 301. This control method has two different operation modes, each producing different effects:

[0052] Co-rotating: When the first motor 302a and the second motor 302b rotate in the same direction, they jointly drive the drag 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 the pipeline. In this mode, the moving speed of the drag chain 301 is jointly determined by the rotation 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 reverse, one motor 302 is responsible for winding up the drag chain 301, while the other motor 302 is responsible for releasing the drag chain 301. This mode is suitable for the need to finely control the movement of the detection component 200 at a specific position in the pipeline. For example, when detecting an area with a high level of radioactivity, it is necessary to slowly move the detection component 200 to collect more detailed data. Reverse rotation allows more precise control to meet different detection requirements.

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

[0055] A plurality of limiters 305 are also provided at any position on the moving path of the drag chain 301, and the limiters 305 are used to guide the moving direction of the drag chain 301. Each limiter 305 includes left and right limiter plates, and a rotating rod mounted on the left and right limiter plates through a bearing.

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

[0057] Specifically, we set a limit plate on each side. The main function of these two limit plates is to limit the deviation of the drag chain 301 in the left and right directions to ensure that it always remains on the center line of the pipeline. In addition, we also set a rotating rod above the left and right limit plates. This rotating rod can rotate with the movement of the drag chain 301, further cooperate with and guide the movement of the drag chain 301, and ensure its stability and accuracy during the movement. In general, by setting a limiter 305 in front of the winding wheel 303 and the roller 304, and setting a limit plate and a rotating rod on the left and right sides, we can effectively guide and control the movement of the drag chain 301 to ensure that the detection component 200 moves in a straight line in the pipeline. This design can not only improve the accuracy of detection, but also reduce equipment damage and detection errors caused by the deviation of the drag chain 301, thereby improving the reliability and efficiency of the entire detection system.

[0058] Example 2

[0059] Reference Figure 1-Figure 3 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that the detection component 200 is a nuclear detector 201. The console 400 communicates with the detection component 200 by wireless communication. When radioactive particles or rays pass through the detector, they interact with the detector material to generate electric charge, light or other signals, which are then amplified and processed by the electronic system of the detector. The signal generated by the detector is converted into an electrical signal, and then converted into a digital signal through an analog-to-digital converter (ADC). The digital signal is then sent to the microprocessor or computer system of the console 400 to count the signal, analyze the energy spectrum, and analyze the time, and display it in numerical values, charts or images.

[0060] It should be noted that the nuclear detector 201 is usually based on some type of sensor, such as a Geiger-Mueller counter, a scintillation detector or a semiconductor detector, which can detect the signal 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 the radioactive particles or rays pass through the detector, they interact with the detector material to generate electric charge, light or other signals, which are then amplified and processed by the electronic system of the detector.

[0061] The signal generated by the detector is converted into an electrical signal and then converted 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 counting the signal, energy spectrum analysis, time analysis, etc. The processed data is transmitted to the console 400 in real time, usually by wired or wireless communication.

[0062] The software system of the console 400 receives this data and converts it into a form that the user can understand, such as a numerical value, a chart, or an image. The screen on the console 400 displays the radioactivity level of the pipe wall to be inspected, which may be in the form of a numerical value, color coding, or a chart. If the radioactivity level exceeds a preset safety threshold or standard, the software system will mark these locations on the screen, such as highlighting, flashing, or changing color. These marked locations can be used for subsequent detailed inspections to determine the exact location and extent of contamination. The 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, so that appropriate measures can be taken to deal with 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 inner wall of the pipeline. Place the pipeline on the detection platform, ensuring that the axis of the pipeline is on the same horizontal line as the axis of the detector. Start the console 400 software and set the safety threshold of the radioactivity level. The operator starts the motor 302, and the detector begins to move along the inner wall of the pipeline. The gamma rays detected by the detector interact with the scintillation material to generate light signals, which are converted into electrical signals. The electrical signals are converted into digital signals through an analog-to-digital converter and then processed by the microprocessor for energy spectrum analysis. The processed data is transmitted to the console 400 in real time through the wireless communication module. The console 400 software receives the data and displays it on the screen in the form of a chart. The screen on the console 400 displays the radioactivity level of the inner wall of the pipeline 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 flashing to remind the operator. The operator notices a high radiation area and controls the detector to move slowly near the area to collect more detailed data. The collected data is recorded and stored for subsequent analysis and reporting. After completing the inspection of the entire pipeline, 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 the specific area needs to be cleaned or repaired.

[0064] The detection component 200 includes a first circumferential fixing member 202 and a second circumferential fixing member 203 arranged 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, so that the first circumferential fixing member 202 and the second circumferential fixing member 203 allow the nuclear detector 201 to be quickly disassembled and replaced, which is very useful during maintenance and repair, so that regular cleaning and maintenance can be performed to maintain the performance and accuracy of the detector. For example, if the nuclear detector 201 needs to be calibrated, replaced or upgraded, the operator can easily remove the first circumferential fixing member 202 and the second circumferential fixing member 203, take out the detector and perform 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 ensured to remain centered when moving in the pipe and avoid direct contact with the inner wall of the pipe. This design helps the detector to move smoothly in the pipe and reduces 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 contain special bearings or rollers 304 to further reduce friction with the inner wall of the pipe, and these bearings or rollers 304 allow the detector to move more smoothly in the pipe. The circumferential fixing member needs to be equipped with a quick release mechanism, such as a snap or threaded connection, for quick disassembly and installation. In order to adapt to pipes of different diameters, a series of circumferential fixing members of different diameters need to be designed, which can be quickly replaced to adapt to different detection tasks. The design of the circumferential fixing member also includes a sealing ring to ensure the sealing of the detector in high pressure or corrosive environments.

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

[0069] The remaining structures are the same as those of Example 1.

[0070] Example 3

[0071] Reference Figure 1-Figure 2 , which is the third embodiment of the present invention, and this embodiment is different 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 on a pre-set support component 100. The support component 100 is designed to stably support and fix the pipeline.

[0073] Before starting the inspection, use a caliper or laser caliper to accurately measure the inner diameter of the pipeline to ensure the selection of the first circumferential fixture 202 and the second circumferential fixture 203 of the correct diameter. These circumferential fixtures will be installed at both ends of the nuclear detector 201 to protect the nuclear detector 201 and ensure that it is centered in the pipeline.

[0074] Check all equipment, including the motor 302, the drag chain 301, the control console 400 and the nuclear detector 201, to ensure that they are in good working condition.

[0075] According to the measured inner diameter of the pipeline, the first circumferential fixing member 202 and the second circumferential fixing member 203 of appropriate diameter are selected and installed at both ends of the nuclear detector 201. It is ensured that the fixing members are firmly installed and will not loosen during the detection process.

[0076] The height of the support frame 102 is adjusted until the axis of the oil and gas pipeline to be detected is completely aligned with the axis of the nuclear detector 201. This step is crucial to ensure that the detector moves smoothly and detects accurately in the pipeline.

[0077] The motor 302 controls the drag chain 301 to move, and the detection component 200 equipped with the nuclear detector 201 is slowly sent into the oil and gas pipeline to be detected. During this process, the position of the detector and the response of the pipeline are closely monitored to ensure that there is no obstruction or other problems.

[0078] Nuclear detector 201 begins to conduct a preliminary screening of the radioactivity level of the oil and gas pipeline to be inspected. At this stage, the detector will move quickly to cover a large area of ​​the pipeline.

[0079] The software on the console 400 will automatically mark locations that exceed this threshold value based on the preset radiation dose value. These locations may be potential radioactive contaminated areas.

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

[0081] The drag chain 301 is controlled to move slowly near each marking point, and the nuclear detector 201 collects more accurate radioactivity data in the process.

[0082] After completing detailed inspection of all the marking points, the software on the console 400 will automatically generate a detailed radioactivity data report for each marking point.

[0083] Operators can review this data to assess the extent and possible sources of contamination and plan cleaning or maintenance accordingly.

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

[0085] Once the detector is completely out of the duct, shut down all equipment and perform any necessary equipment cleaning and maintenance.

[0086] According to the detailed data report generated by the console 400, necessary measures are taken to deal with the radioactive contamination in the pipeline, such as cleaning, repairing or replacing the contaminated part.

[0087] Regular review and maintenance ensures that radioactivity levels in pipelines remain within safety standards.

[0088] Through this detailed and complete workflow, the radioactive dose level on the inner wall of the oil and gas pipeline can be accurately and effectively detected, thereby ensuring the safe operation of the pipeline and the protection of the environment.

[0089] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only several embodiments are described in detail in this disclosure, it should be easily understood by the personnel referring to this disclosure that many modifications are possible (for example, the size, scale, structure, shape and ratio of various elements, and parameter values ​​(for example, temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method step can be changed or reordered according to the alternative embodiment. Any "device plus function" clause is intended to cover the structure of the execution of the function described in this article, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiment. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0090] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0091] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for detecting and positioning radioactive dose on the inner wall of an oil and gas pipeline, characterized in that: include, A support component (100), a petroleum and natural gas pipeline to be inspected, and a detection component (200) for inspecting the pipeline are all 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), and the detection component (200) is electrically connected to a control console (400). The power component (300) comprises a drag chain (301) connected to the detection component (200), and the retraction and extension of the drag chain (301) are controlled by a motor (302).

2. The device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 1 is characterized in that: The support component (100) is divided into a support platform (101) and a support frame (102), wherein 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 detected, wherein the support platform (101) is arranged in a slope form, and the support frame (102) is located at its lowest point.

3. The device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 2 is characterized in that: One end of the drag chain (301) is wound around a reel (303), and the reel (303) is installed at the highest point of the support platform (101) through a bracket. The reel (303) is fixed to the first motor (302a) in the motor (302).

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

5. The device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 3 or 4, characterized in that: A plurality of limiting members (305) are also provided at any position on the moving path of the drag chain (301), and the limiting members (305) are used to guide the moving direction of the drag chain (301).

6. The device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 5 is characterized in that: Each of the limiting members (305) comprises left and right limiting plates, and a rotating rod mounted on the left and right limiting plates via bearings.

7. The device for detecting and locating the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 3 is characterized in that: The detection component (200) is installed at the other end of the drag chain (301), and the detection component (200) is a nuclear detector (201).

8. The device for detecting and positioning the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 7 is characterized in that: The detection component (200) comprises a first circumferential fixing member (202) and a second circumferential fixing member (203) arranged at two ends of the nuclear detector (201), and the diameters of the first circumferential fixing member (202) and the second circumferential fixing member (203) are both the same as the inner diameter of the oil and gas pipeline to be detected.

9. The device for detecting and locating the radioactive dose on the inner wall of a petroleum and natural gas pipeline according to claim 1 is characterized in that: The console (400) and the detection component (200) communicate with each other wirelessly. When radioactive particles or rays pass through the detector, they interact with the detector material to generate electric charge, light or other signals. These signals are then amplified and processed by the electronic system of the detector. The signals generated by the detector are converted into electrical signals and then converted into digital signals through an analog-to-digital converter (ADC). The digital signals are then sent to the microprocessor or computer system of the console (400) for signal counting, energy spectrum analysis, time analysis, and display in the form of numerical values, charts or images.

10. A method for detecting and locating the radioactive dose on the inner wall of an oil and gas pipeline, characterized in that: The device comprises the radioactive dose detection and positioning device for the inner wall of a petroleum and natural gas pipeline according to any one of claims 1 to 9, and Place the oil and gas pipeline to be inspected on the support component, determine the pipe diameter, and replace the first circumferential fixing member and the second circumferential fixing member of the corresponding diameter; Adjust the height of the support frame so that the oil and gas pipeline to be inspected and the axis of the nuclear detector are on the same horizontal line; The drag chain is controlled by a motor to move the detection component to the oil and gas pipeline to be inspected; The nuclear detector first screens the oil and gas pipelines to be inspected, calibrates the locations that exceed the set radiation dose value, and thus determines the contaminated locations; After the initial screening, the contaminated locations inside the pipeline are determined, and then the points are selected. Each marked point is tested in detail, and the drag chain is controlled to move slowly near the marked point, and detailed data is collected through the nuclear detector; After all marking points are detected, detailed data of the marking points are generated on the console, and the drag chain is controlled to return to the initial position, and the detection is completed.

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