Downhole pipeline detection device and method

Abstract

The present invention relates to the field of downhole detection, and in particular to a downhole pipeline detection device and method. It includes a support device, which includes a support arm, and support parts are arranged at both ends of the support arm; a telescopic assembly is vertically arranged in the middle of the support arm, and a position recording module is arranged in the middle of the support arm; the telescopic assembly includes a base arm, multiple groups of sliding arms and an end arm, which are slidably connected in sequence and telescopically move through a first driving module, and a pressure sensor is arranged at the end of the end arm; a measuring assembly is arranged on the end arm, including a measuring ruler and a second driving module for driving the measuring ruler, and a force sensor is arranged on the measuring ruler; a control module is used to receive pressure sensor signals, force sensor signals and movement data of the position recording module, control and record the movement of the first driving module and the second driving module, and calculate the well depth and pipe diameter. The present invention reduces the need for personnel to go down the well, reduces the safety risks of personnel in the downhole environment, and improves the accuracy of pipe diameter and well depth measurement.

Description

Technical Field

[0001] The present invention relates to the field of downhole detection, and in particular to a downhole pipeline detection device and method. Background Art

[0002] As the infrastructure of modern society, electricity plays a vital role in the development of the national economy. With the rapid development of the economy and the acceleration of urbanization, traditional overhead lines are gradually being replaced by underground cables due to their large footprint and poor operating stability. Underground cables have been widely used in the construction and transformation of urban distribution networks due to their advantages such as small footprint, high operating stability and beautiful appearance. However, before laying power cables, the distribution status of underground pipelines must be accurately detected to avoid conflicts with existing pipelines such as communications and gas, and to ensure that the safety distance requirements are met.

[0003] In the prior art, the detection of underground pipelines usually relies on manual operation and uses ultrasonic detection instruments for detection. This method has significant limitations. First, manual detection is inefficient and requires a lot of time and human resources. Secondly, the underground environment is complex and there are safety risks such as inhalation of toxic gases. In addition, existing detection equipment, such as the measuring rod for drainage pipelines described in Patent No. CN206974338U, and the drainage pipe diameter measuring instrument described in Patent No. CN114518064A, although providing a measurement means, their measurement accuracy is not ideal, and manual real-time control is required. In actual use, problems such as bending, tilting, and inaccurate positioning will occur, resulting in large errors and inconvenient manpower operation. Therefore, in view of the shortcomings of the prior art, there is an urgent need for an underground pipeline detection device and method. Summary of the invention

[0004] The present invention provides a downhole pipeline detection device and method, aiming to solve the problem of inaccurate measurement of well depth and pipe diameter in the prior art.

[0005] To achieve the above purpose, the following technical solution is adopted.

[0006] A downhole pipeline detection device comprises a supporting device, a telescopic component, a measuring component and a control module, wherein the supporting device is used to support the detection device at a wellhead; the telescopic component is arranged on the supporting device for transverse sliding; a position recording module is arranged on the supporting device for recording the transverse movement data of the telescopic component, the telescopic component is provided with a first driving module, the first driving module is used to drive the telescopic component to vertically extend and retract, and a pressure sensor is arranged at the bottom of the telescopic end of the telescopic component; the measuring component is arranged at the telescopic end of the telescopic component, the measuring component comprises a measuring ruler and a second driving module for driving the measuring ruler to move in a vertical direction, and a force sensor is arranged on the measuring ruler; the control module is used to receive the pressure sensor signal, the force sensor signal and the movement data of the position recording module, control and record the movement of the first driving module and the second driving module, and calculate the well depth and pipe diameter.

[0007] Optionally, the supporting device includes a supporting arm, and supporting parts are arranged at both ends of the supporting arm; the position recording module is arranged in the middle of the supporting arm; the telescopic assembly includes a base arm, a sliding arm and an end arm, the base arm and the middle part of the supporting arm are laterally slidingly connected, one side of the sliding arm is vertically slidingly connected to the base arm, and the other side of the sliding arm is vertically slidingly connected to the end arm; the telescopic end of the telescopic assembly is the end arm, the pressure sensor is arranged at the bottom of the end arm, and the first driving module is used to drive the base arm, the sliding arm and the end arm to vertically extend and retract simultaneously.

[0008] Optionally, the sliding arm includes multiple groups, the top of the base arm is connected to the middle part of the support arm, the base arm is provided with a rack, the first driving module is provided with a gear meshing with the rack, the first driving module is arranged on the first group of sliding arms slidingly connected to the base arm, the end of the base arm is connected to the first end of the connecting rope, the connecting rope is connected to the first pulley arranged at the end of the first group of sliding arms, and then connected in sequence to the second upper pulley at the top of the second group of sliding arms, the second lower pulley at the end of the second group of sliding arms, the third upper pulley at the top of the third group of sliding arms, and the third lower pulley at the end of the third group of sliding arms, and the remaining sliding arms are connected in sequence until the second end of the connecting rope is connected to the top of the end arm.

[0009] Optionally, the measuring component also includes a servo, and the measuring ruler is installed on the servo. The second driving module is used to drive the servo to move, and the servo is used to retract the measuring ruler before the pressure sensor touches the bottom or when the pipeline detection device is retracted, and the measuring ruler remains in a vertical state. When the pressure sensor touches the bottom to measure the pipe diameter, the measuring ruler is unfolded.

[0010] Optionally, the pressure sensor is arranged in a bottoming ball at the telescopic end of the telescopic assembly, and the bottoming ball is used to protect the pressure sensor.

[0011] Optionally, telescopic rods are provided at both ends of the support arm, one end of the telescopic rod is coaxially connected to the support arm, and the other end of the telescopic rod is fixedly connected to the support part.

[0012] Optionally, a third driving module is also provided at the connection between the telescopic component and the supporting device, which is used to drive the telescopic component to slide horizontally on the supporting device. The third driving module is electrically connected to the position recording module, and the control module is electrically connected to the third driving module and the position recording module. The control module is also used to control the position of the telescopic component by controlling the third driving module, and receive the movement data recorded by the position recording module.

[0013] Optionally, the telescopic end of the telescopic assembly is also provided with an intelligent monitoring terminal for real-time monitoring of the underground environmental conditions, including gas, temperature and operating scenes, and wirelessly communicating with the control module to send monitoring data to the control module for analysis; the control module is provided with a neural network algorithm for receiving the monitoring data to identify the changing trends of underground oxygen and toxic gases, and provide gas safety warnings.

[0014] A downhole pipeline detection method comprises the following steps:

[0015] Fix the support device at the wellhead and record the initial position of the telescopic assembly through the position recording module;

[0016] The control module controls the first driving module so that the telescopic component goes deeper into the well to detect until the pressure sensor detects that the telescopic end of the telescopic component touches the bottom;

[0017] When the telescopic end of the telescopic assembly touches the bottom, the control module controls the second driving module to drive the measuring ruler to unfold and move vertically upward until the force sensor touches the top of the pipe wall. The control module receives the movement data recorded by the position recording module, records the number of revolutions of the first driving module and the second driving module, and calculates the first position coordinates of the measuring ruler at this time.

[0018] The control module calculates the well depth by recording the number of revolutions of the first driving module;

[0019] The control module controls the second driving module to drive the measuring ruler to move downward and retract.

[0020] The telescopic component adjusts its position in the lateral direction, and records the second position of the telescopic component through the position recording module;

[0021] The control module controls the second driving module to drive the measuring ruler to unfold and move upward until the force sensor touches the top of the pipe wall;

[0022] The control module receives the second position movement data recorded by the position recording module, records the number of revolutions of the first driving module and the second driving module, and calculates the second position coordinates of the measuring ruler at this time;

[0023] The control module controls the second driving module to drive the measuring ruler to move downward and retract.

[0024] The telescopic component adjusts its position in the lateral direction, and the position recording module records the third position of the telescopic component;

[0025] The control module controls the second driving module to drive the measuring ruler to unfold and move upward until the force sensor touches the top of the pipe wall;

[0026] The control module receives the third position movement data recorded by the position recording module, records the number of revolutions of the first driving module and the second driving module, and calculates the third position coordinate of the measuring ruler at this time;

[0027] The control module calculates the pipe diameter through the first position coordinate, the second position coordinate and the third position coordinate.

[0028] Optionally, the following steps are also included:

[0029] When the telescopic end of the telescopic assembly touches the bottom, the intelligent monitoring terminal installed on the telescopic end of the telescopic assembly is used to monitor the underground environmental conditions in real time, including gas composition, temperature and operation scene;

[0030] The intelligent monitoring terminal sends the monitored environmental data to the control module via wireless communication;

[0031] After receiving the environmental data, the control module uses the built-in neural network algorithm to process the data;

[0032] The control module uses a neural network algorithm to analyze the changing trends of oxygen and toxic gases underground;

[0033] Based on the results of gas trend analysis, the control module generates gas safety warning information;

[0034] The control module sends the generated gas safety warning information to the well operators or the remote monitoring center via wireless communication.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention reduces the need for personnel to go down the well through automated control and intelligent monitoring, thereby reducing the safety risks of operators in the underground environment. The lateral adjustment function of the support arm and the design of the telescopic component enable the device to measure from multiple angles, improving the accuracy of pipe diameter and well depth measurement. Automated control reduces the steps of manual operation, speeds up the measurement process, and improves the efficiency of the overall operation.

[0037] The connection mode between the base arm and the support arm and the sliding mechanism of the sliding arm ensure the stability and durability of the device, which is suitable for a variety of downhole environments. The design of the connecting rope and pulley system realizes the synchronous extension and retraction of the multi-stage sliding arm, ensuring the consistency and accuracy of the measurement process. The pressure sensor is set in the bottoming ball at the end of the end arm, which effectively avoids direct impact and damage and prolongs the service life of the sensor. The design of the measurement component allows accurate measurement under different wellbore conditions, improving the applicability and flexibility of the device.

[0038] Through the electrical connection between the third driving module and the position recording module, the control module can accurately control the position of the telescopic component, thereby improving the measurement accuracy. The position recording module automatically records the movement data of the telescopic component, thereby reducing the errors and workload of manual recording.

[0039] The intelligent monitoring terminal installed on the telescopic end of the telescopic component can monitor the underground environment in real time and provide immediate safety information to the operators. The wireless communication capability of the intelligent monitoring terminal and the control module enables the rapid transmission and analysis of monitoring data, improving the early warning capability of potential dangers. The neural network algorithm built into the control module can intelligently analyze the trend of underground gas changes and provide scientific safety warnings. Through algorithm analysis, the control module can more accurately predict and identify potential gas safety risks, improving the reliability of the early warning system.

[0040] Through multi-point measurement and position record calculation, the reliability and accuracy of pipe diameter measurement are improved. The automated measurement method reduces the reliance on manual labor, allowing human resources to be more effectively allocated to other key operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The figure is a schematic diagram of the structure of a downhole pipeline detection device in a contracted state according to an embodiment of the present invention.

[0042] Figure 2 The figure is a schematic diagram of the structure of a downhole pipeline detection device in an expanded state according to an embodiment of the present invention.

[0043] Figure 3 The figure is a top view schematically showing the installation state of a downhole pipeline detection device according to an embodiment of the present invention.

[0044] Figure 4The present invention is a schematic diagram of the structure of a telescopic component of an embodiment of a downhole pipeline detection device.

[0045] Figure 5 The present invention is a schematic diagram of the structure of a downhole pipeline detection device in downhole use state.

[0046] Among them, 1. support device; 101. support arm; 102. support part; 2. telescopic component; 201. base arm; 202. sliding arm; 203. end arm; 3. first drive module; 4. measuring component; 401. measuring ruler; 402. second drive module; 403. servo; 5. rack; 6. connecting rope; 7. bottoming ball. DETAILED DESCRIPTION

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0048] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention;

[0049] Example 1

[0050] like Figure 1-Figure 5 As shown, a downhole pipeline detection device includes:

[0051] The support device 1 includes a support arm 101, and support parts 102 are provided at both ends of the support arm 101, which are used to support the detection device at the wellhead; a telescopic component 2 is vertically provided in the middle of the support arm 101, which is used to adjust the position of the telescopic component 2 along the direction of the support arm 101, and a position recording module is provided in the middle of the support arm 101, and the position recording module is used to record the movement distance of the telescopic component 2 along the direction of the support arm 101;

[0052] The telescopic assembly 2 includes a base arm 201, a sliding arm 202 and an end arm 203. The base arm 201 and the middle part of the support arm 101 are connected in a horizontal sliding manner. One side of the sliding arm 202 is connected in a vertical sliding manner with the base arm 201, and the other side of the sliding arm 202 is connected in a vertical sliding manner with the end arm 203. The telescopic end of the telescopic assembly 2 is the end arm 203. The pressure sensor is arranged at the bottom of the end arm 203. The first driving module 3 is used to drive the base arm 201, the sliding arm 202 and the end arm 203 to vertically telescope at the same time. The telescopic assembly 2 is used for deep underground detection, and the pressure sensor is used to detect whether the end of the end arm 203 has reached the bottom of the well.

[0053] The measuring assembly 4 is arranged on the end arm 203, and includes a measuring ruler 401 and a second driving module 402 for driving the measuring ruler 401. A force sensor is arranged on the measuring ruler 401. When the end of the end arm 203 touches the bottom, the measuring ruler 401 is driven by the second driving module 402 to move upward until the force sensor touches the top of the pipe wall.

[0054] The control module is used to receive the pressure sensor signal, the force sensor signal and the movement data recorded by the position recording module, control and record the movement of the first driving module 3 and the second driving module 402, specifically record the number of revolutions of the first driving module 3 and the second driving module 402, and calculate the well depth and pipe diameter.

[0055] Specifically, the support device 1 includes a support arm 101, with support parts 102 installed at both ends. The support part 102 is designed to be fixed on the edge of the wellhead to ensure the stability of the device. The middle part of the support arm 101 is vertically connected with a telescopic component 2. The telescopic component 2 can move laterally in the direction of the support arm 101, and can adjust its position along the direction of the support arm 101 according to the wellhead diameter, and is suitable for a variety of wellhead diameters. The middle part of the support arm 101 is also equipped with a position recording module, which is used to record in real time the distance moved by the telescopic component 2 along the support arm 101, so as to obtain the coordinates of the pipe diameter measurement points at different positions, so as to facilitate the calculation of the pipe diameter through the principle of three-point common circle.

[0056] The telescopic assembly 2 is composed of a base arm 201, one or more sets of sliding arms 202 and a terminal arm 203 which are connected in a sliding manner in sequence. The base arm 201 is connected to the support arm 101 in a transverse sliding manner, and the telescopic movement of the sliding arm 202 is controlled by the first driving module 3. The first driving module 3 may include a driving motor, a reducer and a gear, and an encoder may be installed on the motor to provide real-time feedback on the number of revolutions of the motor, thereby accurately controlling the movement of the sliding arm 202. The design of the sliding arm 202 allows for deep exploration underground, and a pressure sensor is installed at the end of the terminal arm 203 to detect whether the terminal arm 203 has touched the bottom.

[0057] The measuring assembly 4 is mounted on the end arm 203 and includes a measuring ruler 401 and a second driving module 402. When the end arm 203 touches the bottom, the measuring ruler 401 can be unfolded upwards through the second driving module 402, or can be unfolded by the steering gear control, from a vertical state to a horizontal state, until the force sensor touches the top of the pipe wall. The second driving module 402 can also include a driving motor and an encoder to control the up and down movement of the measuring ruler 401 and record its moving distance.

[0058] The control module receives signals from the pressure sensor, the force sensor and the position recording module. The control module controls the movement of the first drive module 3 and the second drive module 402 according to these signals, and records their rotation speeds. Through these data, the control module can calculate the well depth and pipe diameter. The control module can also communicate with the intelligent terminal through Bluetooth or other wireless communication technologies to transmit the measurement data and underground environment monitoring information to the operator.

[0059] In actual application, the operator first fixes the support device 1 at the wellhead, and then communicates with the control module through the smart terminal to control the telescopic assembly 2 to go deeper into the well. When the end arm 203 touches the bottom, the pressure sensor sends a signal, and the control module stops the movement of the sliding arm 202 after receiving the signal. Subsequently, the control module instructs the second drive module 402 to move the measuring ruler 401 until the force sensor touches the top of the pipe wall. At this point, the control module records all necessary data, and automatically calculates and displays the well depth and pipe diameter through the APP of the smart terminal. As a specific example, the control module can be a smart terminal, and can also communicate with the smart terminal through a communication module.

[0060] This implementation significantly improves the safety and efficiency of underground pipeline detection through automated control and precise measurement, and provides comprehensive safety protection for operators through intelligent monitoring terminals. The design of this device fully considers the special needs of underground operations, solves the problems existing in the existing technology through technological innovation, and realizes the automation and intelligence of underground pipeline detection;

[0061] Example 2

[0062] like Figure 4 As shown, as a preferred example, the top of the base arm 201 is connected to the middle part of the support arm 101, a rack 5 is arranged on the base arm 201, the first driving module 3 is provided with a gear meshing with the rack 5, the first driving module 3 is arranged on the first group of sliding arms 202 slidingly connected with the base arm 201, the end of the base arm 201 is connected to the first end of the connecting rope 6, the connecting rope 6 is connected to the first pulley arranged at the end of the first group of sliding arms 202, and then connected in sequence to the second upper pulley at the top of the second group of sliding arms 202, the second lower pulley at the end of the second group of sliding arms 202, the third upper pulley at the top of the third group of sliding arms 202, the third lower pulley at the end of the third group of sliding arms 202, and the remaining sliding arms 202 are connected in sequence until the second end of the connecting rope 6 is connected to the top of the terminal arm 203.

[0063] Specifically, the base arm 201 is provided with a rack 5, and the first driving module 3 is equipped with a gear meshing with the rack 5. This meshing mechanism enables the first driving module 3 to effectively control the telescopic movement of the base arm 201. The first driving module 3 is arranged on the first group of sliding arms 202 that are slidably connected to the base arm 201. This arrangement ensures direct transmission of the driving force and improves the efficiency and accuracy of the movement of the sliding arm 202.

[0064] The end of the base arm 201 is connected to the first end of the connecting rope 6, and through a series of pulley systems, the connecting rope 6 sequentially connects the upper pulley and the lower pulley of each level of the sliding arm 202 until the top of the terminal arm 203. This design allows the sliding arm 202 to extend and retract synchronously, ensuring the coordination and stability of the movement.

[0065] Through the control of the first driving module 3, the sliding arms 202 at each level can be extended and retracted synchronously, which not only improves the working efficiency but also ensures the accuracy of the measurement. A pressure sensor is provided at the end of the end arm 203 to detect whether the end arm 203 touches the bottom. This function is crucial for determining the well depth and pipe diameter.

[0066] The movement of the entire sliding arm 202 can also be controlled by the intelligent terminal. The operator can monitor the status of the sliding arm 202 in real time through the intelligent terminal and perform precise control.

[0067] Through the above implementation, the pipeline detection device of the present invention can safely and efficiently detect underground pipelines, while providing real-time underground environmental monitoring to ensure the safety of operators. This automated and intelligent design significantly improves the safety and efficiency of underground operations, while reducing the complexity and risk of operations;

[0068] Example 3

[0069] As a preferred example, the measuring component 4 also includes a servo 403, and the measuring ruler 401 is installed on the servo 403. The second driving module 402 is used to drive the servo 403 to move. The servo 403 is used to retract the measuring ruler 401 before the end of the end arm 203 touches the bottom or when the pipeline detection device is retracted. The measuring ruler 401 remains parallel to the end arm 203. When the end of the end arm 203 touches the bottom to measure the pipe diameter, the measuring ruler 401 is unfolded.

[0070] Specifically, the measuring assembly 4 includes a servo 403 and a measuring ruler 401. The measuring ruler 401 is mounted on the servo 403. This design allows the measuring ruler 401 to be unfolded when needed and folded when not needed to adapt to different measurement environments and conditions. The second drive module 402 is used to drive the servo 403 to move. This driving method ensures that the measuring ruler 401 can be accurately positioned at the top of the pipe wall to perform accurate pipe diameter measurement. Before the pressure sensor at the bottom of the end arm 203 touches the bottom or when the pipeline detection device is retracted, the measuring ruler 401 remains in a folded state, parallel to the end arm 203. This design helps to protect the measuring ruler 401 from damage and ensures the smoothness of the device during movement.

[0071] When the end of the end arm 203 touches the bottom and the pipe diameter needs to be measured, the measuring ruler 401 is unfolded by the second driving module 402. The unfolding action of the measuring ruler 401 is triggered by the control module according to the signal of the pressure sensor, which ensures the accuracy and timeliness of the measurement.

[0072] After the measuring ruler 401 is unfolded, it moves upwards through the drive of the second driving module 402 until the force sensor touches the top of the pipe wall. This process is automatic and controlled by the control module, ensuring the accuracy and repeatability of the measurement.

[0073] The movement of the measuring ruler 401 is recorded by the encoder of the second driving module 402 and transmitted to the smart terminal via Bluetooth or other wireless communication methods. The smart terminal can be a control module. The APP on the smart terminal calculates the pipe diameter based on the movement of the measuring ruler 401 and known parameters.

[0074] Through the above implementation, the pipeline detection device of the present invention can safely and efficiently detect underground pipelines, while providing real-time underground environmental monitoring to ensure the safety of operators. This automated and intelligent design significantly improves the safety and efficiency of underground operations, while reducing the complexity and risk of operations;

[0075] Example 4

[0076] As a preferred example, the pressure sensor is disposed in the bottoming ball 7 at the telescopic end of the telescopic assembly 2, and the bottoming ball 7 is used to protect the pressure sensor.

[0077] Specifically, the pressure sensor is integrated into the bottoming ball 7 at the end of the end arm 203. This integrated design not only protects the sensor from direct impact and potential damage, but also allows the sensor to directly sense pressure changes when the end arm 203 hits the bottom.

[0078] The bottoming ball 7 is designed as a solid shell with a pressure sensor installed inside. The shell material is made of high-strength lightweight alloy, which can withstand the impact of the underground environment and maintain the sensitivity of the sensor.

[0079] When the end arm 203 touches the bottom, the bottoming ball 7 first touches the bottom of the well, and the pressure sensor inside it is activated. The pressure change detected by the sensor is converted into an electrical signal and sent to the control module.

[0080] The control module receives the signal from the pressure sensor and determines whether the end arm 203 has reached the bottom of the well according to a preset threshold value. Once the bottom is confirmed, the control module sends a stop signal to the first drive module 3 to stop the sliding arm 202 from further extending.

[0081] To ensure the accuracy of the measured data, the pressure sensor needs to be regularly maintained and calibrated. The design of the touch ball 7 allows technicians to easily access the sensor to carry out necessary maintenance work.

[0082] Before the device is put into use, the pressure sensor and the bottoming ball 7 will undergo a series of durability tests, including impact tests, pressure tests and environmental adaptability tests, to ensure that they can work stably in harsh underground environments.

[0083] Through the above implementation, the pipeline detection device of the present invention can provide accurate bottom detection in the underground environment, while protecting the sensor from damage, ensuring the safety and accuracy of the measurement process. This design significantly improves the efficiency and reliability of underground operations, while reducing maintenance costs and potential operational risks;

[0084] Example 5

[0085] As a preferred example, telescopic rods are provided at both ends of the support arm 101 , one end of the telescopic rod is coaxially connected to the support arm 101 , and the other end of the telescopic rod is fixedly connected to the support portion 102 .

[0086] Specifically, telescopic rods are provided at both ends of the support arm 101, and these telescopic rods are designed to adjust the length of the support arm 101 to adapt to wellheads of different diameters. The telescopic rods can be extended and retracted through a rotation adjustment mechanism, so that the support part 102 can be firmly fixed on the well edge.

[0087] The middle part of the support arm 101 is slidably connected to the telescopic assembly 2. This design allows the telescopic assembly 2 to move along the length of the support arm 101 to adjust the detection depth. The sliding connection mechanism includes a guide rail and a slider to ensure that the telescopic assembly 2 moves smoothly and accurately.

[0088] A distance scale may be provided in the middle of the support arm 101, and the distance scale may be a position recording module, and the distance scale is used to indicate the specific position of the telescopic assembly 2 moving along the support arm 101. The distance scale may be a number or a mark, directly engraved on the support arm 101, or attached to the support arm 101 in the form of a sticker.

[0089] The operator can determine the current position of the telescopic assembly 2 by reading the distance scale and input the read distance scale into the control module. The unit of the scale can be centimeters or meters, so that the operator can quickly convert and record.

[0090] Telescopic poles are usually made of high-strength lightweight alloys to ensure that the telescopic poles can maintain structural stability and durability under heavy pressure and harsh environmental conditions.

[0091] To ensure that the telescopic pole does not accidentally slide after being adjusted to the proper position, a locking mechanism is included in the telescopic pole design. This mechanism can be a snap, bolt or other form of locking device to ensure the stability of the device during use.

[0092] The accuracy of the distance scale is crucial to the accuracy of the measurement results. Therefore, the manufacturing and installation process of the scale needs to be strictly controlled to ensure its accuracy and reliability.

[0093] Through the above embodiments, the pipeline detection device of the present invention can provide a reliable, accurate and easy-to-operate downhole pipeline detection solution. The design of the telescopic rod and the distance scale enables the device to adapt to different wellhead sizes and depth requirements, while providing accurate measurement data to meet the needs of field operations. This design significantly improves the safety and efficiency of downhole operations, while reducing the complexity and risk of operations;

[0094] Example 6

[0095] As a preferred example, a third drive module is provided at the connection between the telescopic component 2 and the support device 1. The module is equipped with a motor and a transmission mechanism, such as a gear or chain drive, for driving the telescopic component 2 to slide laterally on the support device 1. The third drive module is electrically connected to the position recording module, which means that the position recording module can monitor and record the lateral movement distance and direction of the telescopic component 2 in real time. The control module is electrically connected to the third drive module and the position recording module, and is used to receive data from the position recording module, and control the third drive module based on these data, so as to accurately control the position of the telescopic component 2. The third drive module drives the transmission mechanism connected to it through a motor, so that the telescopic component 2 slides laterally along the guide rail or slide groove of the support device 1 to adapt to different underground environments and detection requirements.

[0096] The position recording module records the sliding distance and direction of the telescopic component 2 , and these data are crucial for the control module to calculate the precise position of the telescopic component 2 .

[0097] The operator sends a control instruction to the control module through the smart terminal. The control module controls the third driving module to drive the telescopic component 2 to slide horizontally on the supporting device 1 to adjust the detection position according to the received instruction and the data of the position recording module.

[0098] The data recorded by the position recording module is transmitted to the control module in a wireless or wired manner. After the control module processes the data, it sends a corresponding control signal to the third driving module.

[0099] The APP interface of the smart terminal displays the real-time position and movement data of the telescopic component 2, and the operator can adjust the position of the telescopic component 2 according to the displayed data.

[0100] The pipeline detection device of the present invention can realize accurate lateral sliding of the telescopic component 2 on the supporting device 1, thereby improving the flexibility and accuracy of detection and ensuring the safety of operation;

[0101] Example 7

[0102] As a preferred example, the end arm 203 is also provided with an intelligent monitoring terminal for real-time monitoring of underground environmental conditions, including gas, temperature and operating scenes, and wireless communication with the control module to send the monitoring data to the control module for analysis.

[0103] Specifically, the intelligent monitoring terminal includes a gas detection module, a temperature sensor, a camera and a data processing unit. The gas detection module is used to monitor the gas composition underground in real time to ensure the safety of the working environment; the temperature sensor is used to monitor the temperature changes underground to prevent safety hazards caused by abnormal temperature; the camera is used to record and monitor the working scene and provide visual on-site information.

[0104] The intelligent monitoring terminal and the control module are connected via wireless communication technology such as Bluetooth or WIFI. The wireless communication function enables the monitoring terminal to send monitoring data to the control module in real time, ensuring timely transmission and processing of data.

[0105] The intelligent monitoring terminal has a built-in data processing unit that can perform real-time analysis on the received gas and temperature data. Through algorithm analysis, the monitoring terminal can identify the changing trend of underground gas and generate corresponding safety warning information.

[0106] The camera setting enables operators to view the underground operation in real time. The monitoring screen can be displayed on the smart terminal, and operators can adjust the operation strategy based on the real-time video information to ensure the safety and effectiveness of the operation.

[0107] The intelligent monitoring terminal can store the monitored environmental data and operation video records in the built-in memory, which is convenient for subsequent data analysis and audit. The stored data can be transmitted wirelessly to the remote monitoring center to realize centralized data management.

[0108] When the gas detection module detects that the concentration of toxic gas exceeds the safety threshold, the intelligent monitoring terminal will immediately issue an alarm and send the warning information to the control module and the operator's intelligent terminal through wireless communication to ensure that timely response measures are taken.

[0109] Through the above implementation, the pipeline detection device of the present invention provides a comprehensive solution for underground environment monitoring. The design of the intelligent monitoring terminal not only improves the safety of underground operations, but also enhances the intelligence level of operations and ensures the safety of operators in complex environments. This design effectively solves the problems of insufficient environmental monitoring and operational safety risks in the prior art.

[0110] The control module is equipped with a neural network algorithm to receive monitoring data to identify the changing trends of oxygen and toxic gases in the well and provide gas safety warnings. Specifically, the control module is integrated with a neural network algorithm that can process a large amount of data received from the intelligent monitoring terminal. These data include the concentration information of oxygen and toxic gases in the well, as well as other environmental parameters.

[0111] The neural network algorithm can identify and predict the changing trend of gas concentration by deep learning the collected data. The algorithm can automatically adjust its parameters to adapt to different downhole environments and changes in gas composition.

[0112] Based on the analysis results of the neural network algorithm, the control module can generate gas safety warning information in real time. When a potential harmful gas leak or other safety hazard is detected, the system will automatically trigger an early warning and notify the operator through the smart terminal.

[0113] To ensure the accuracy and reliability of the algorithm, the control module regularly trains and optimizes the algorithm. This includes using the latest downhole data to update the neural network model to ensure that it can accurately identify new gas change patterns.

[0114] The control module maintains real-time communication with the smart terminal through wireless communication technology such as WIFI or Bluetooth. This enables the control module to receive data sent by the smart terminal in a timely manner and quickly respond to any safety warnings.

[0115] The smart terminal provides a user-friendly interface that allows operators to easily view gas detection results and safety warning information. The interface design takes user ease of use into consideration, ensuring that quick action can be taken in emergency situations.

[0116] Through the above implementation, the pipeline detection device of the present invention can not only provide accurate pipeline detection function, but also provide comprehensive safety monitoring and timely gas safety warning for underground workers through the integrated intelligent monitoring terminal and neural network algorithm, thereby significantly improving the safety and efficiency of underground operations;

[0117] Example 8

[0118] A downhole pipeline detection method comprises the following steps:

[0119] The support device 1 is fixed at the wellhead, and the initial position of the telescopic assembly 2 is recorded by a position recording module in the middle of the support arm 101 .

[0120] The control module controls the first driving module 3 to make the telescopic assembly 2 go deeper into the well for detection until the pressure sensor at the end of the end arm 203 detects that the telescopic end of the telescopic assembly 2 touches the bottom;

[0121] When the telescopic end of the telescopic assembly 2 touches the bottom, the control module controls the second driving module 402 to drive the measuring ruler 401 to unfold and move vertically upward until the force sensor touches the top of the pipe wall. The control module receives the movement data recorded by the position recording module, records the number of revolutions of the first driving module 3 and the second driving module 402, and calculates the first position coordinates of the measuring ruler 401 at this time.

[0122] The control module calculates the well depth by recording the number of revolutions of the first driving module 3;

[0123] The control module controls the second driving module 402 to drive the measuring ruler 401 to move downward and retract.

[0124] The telescopic component 2 adjusts its position in the lateral direction, and the second position of the telescopic component 2 is recorded by the position recording module;

[0125] The control module controls the second driving module 402 to drive the measuring ruler 401 to unfold and move upward until the force sensor touches the top of the pipe wall;

[0126] The control module receives the second position movement data recorded by the position recording module, records the number of revolutions of the first driving module 3 and the second driving module 402, and calculates the second position coordinates of the measuring ruler 401 at this time;

[0127] The control module controls the second driving module 402 to drive the measuring ruler 401 to move downward and retract.

[0128] The telescopic component 2 adjusts its position in the lateral direction, and the position recording module records the third position of the telescopic component 2;

[0129] The control module controls the second driving module 402 to drive the measuring ruler 401 to unfold and move upward until the force sensor touches the top of the pipe wall;

[0130] The control module receives the third position movement data recorded by the position recording module, records the number of revolutions of the first driving module 3 and the second driving module 402, and calculates the third position coordinate of the measuring ruler 401 at this time;

[0131] The control module calculates the pipe diameter through the first position coordinate, the second position coordinate and the third position coordinate.

[0132] Specifically, first, the support device 1 is fixed to the wellhead to ensure the stability of the device. The initial position of the telescopic assembly 2 is recorded by the position recording module in the middle of the support arm 101 to provide reference data for subsequent measurements.

[0133] The control module is started to control the telescopic assembly 2 to conduct exploration along the well through the first driving module 3. A pressure sensor is installed at the end of the telescopic assembly 2 to detect whether the end arm 203 touches the bottom.

[0134] When the telescopic end of the telescopic component 2 touches the bottom, the pressure sensor sends a signal to the control module. After receiving the signal, the control module instructs the first driving module 3 to stop the movement of the sliding arm 202.

[0135] The control module controls the second driving module 402 to drive the measuring ruler 401 to unfold and move upward until the force sensor touches the top of the pipe wall. At this time, the control module receives the movement data recorded by the position recording module and records the number of revolutions of the first driving module 3 and the second driving module 402.

[0136] The control module calculates the well depth by recording the number of revolutions of the first driving module 3 and combining the design parameters of the sliding arm 202 .

[0137] The control module controls the telescopic component 2 to adjust its position along the direction of the support arm 101 , and records the new position of the telescopic component 2 through the position recording module.

[0138] The control module repeats steps 4 and 5 to perform the second and third measurements, recording new movement data and number of revolutions after each measurement.

[0139] The control module uses the recorded three position coordinates, namely the first position coordinate, the second position coordinate and the third position coordinate, to calculate the pipe diameter through a preset algorithm such as a three-point common circle algorithm.

[0140] The control module sends the calculated well depth and pipe diameter data to the smart terminal through the wireless communication module, and the APP of the smart terminal receives the data and displays the results.

[0141] While taking measurements, the intelligent monitoring terminal monitors the underground gas and temperature conditions in real time, and conducts on-site video monitoring through the camera module to ensure the safety of operators.

[0142] Specific, pipe diameter measurement principle:

[0143] Take any three positions for measurement. The coordinates of position 1 are defined as x1, y1, the coordinates of position 2 are x2, y2, the coordinates of position 3 are x3, y3, the coordinates of the center of the circle are x0, y0, and the radius of the circle is r. The coordinates of the three positions are known. According to ;

[0144] Subtracting formula (1) and (2), and subtracting formula (1) and (3) can be simplified to obtain: ;

[0145] set up ;

[0146] Solved: ;

[0147] So: r=[(x1-x0) 2 +(y1-y0) 2 ] 0.5

[0148] The equipment uses Bluetooth communication. The measurement app is installed on the mobile terminal, and the calculation program is written into the APP, which can automatically read the well depth and pipe diameter.

[0149] Specifically, the calculation method of well depth is:

[0150] The number of revolutions of the first driving module 3 is converted into the amount of extension and retraction of the first group of sliding arms 202: s=2×n×d×π×i, where n is the number of revolutions, d is the gear pitch circle diameter, and i is the speed ratio of the reducer.

[0151] The length of the entire sliding arm 202 is obtained from the extension amount of the first sliding arm 202: S=L0+5×s+L1, where L0 is the distance from the top of the first sliding arm 202 to the ground, and L1 is the height of the bottoming ball 7 and the pressure sensor;

[0152] Example 9

[0153] As a preferred example, the method further includes the following steps:

[0154] When the telescopic end of the telescopic component 2 touches the bottom, the intelligent monitoring terminal provided on the telescopic end of the telescopic component 2 is used to monitor the underground environment in real time, including gas composition, temperature and operation scene;

[0155] The intelligent monitoring terminal sends the monitored environmental data to the control module via wireless communication;

[0156] After receiving the environmental data, the control module uses the built-in neural network algorithm to process the data;

[0157] The control module uses a neural network algorithm to analyze the changing trends of oxygen and toxic gases underground;

[0158] Based on the results of gas trend analysis, the control module generates gas safety warning information;

[0159] The control module sends the generated gas safety warning information to the well operators or the remote monitoring center via wireless communication.

[0160] Specifically, when the telescopic end of the telescopic component 2 touches the bottom, the intelligent monitoring terminal provided on the telescopic end of the telescopic component 2 automatically starts to monitor the underground environment in real time, including gas composition, temperature and operation scene.

[0161] The intelligent monitoring terminal is equipped with gas sensors, temperature sensors and cameras to collect relevant data on the underground environment.

[0162] The collected environmental data is sent to the control module via a wireless communication module such as WIFI or Bluetooth. The wireless communication module ensures the real-time and stability of data transmission.

[0163] The control module has a built-in neural network algorithm that is used to receive and process environmental data sent from the intelligent monitoring terminal. The neural network algorithm can identify patterns and trends in the data.

[0164] The control module uses a neural network algorithm to analyze the changing trends of oxygen and toxic gases in the well. The algorithm predicts changes in gas concentration by learning historical data and real-time data.

[0165] Based on the analysis results of the neural network algorithm, the control module generates gas safety warning information, including alarms when gas concentration exceeds the safety threshold and warnings of potential harmful gas leaks.

[0166] The control module sends the generated gas safety warning information to the well operators or remote monitoring center through wireless communication. This step ensures that the operators can receive the warning information in time and take corresponding safety measures.

[0167] The user interface of the smart terminal displays real-time monitoring data and warning information, allowing operators to intuitively understand the underground environmental conditions.

[0168] After receiving the early warning information, the well workers or operators in the remote monitoring center can immediately take safety measures, such as evacuating personnel, initiating emergency procedures or adjusting the operation plan.

[0169] All monitoring data and warning information will be recorded and stored for subsequent data analysis and accident prevention.

[0170] Through the above implementation, the pipeline detection method of the present invention can not only realize accurate detection of underground pipelines, but also provide real-time environmental monitoring and safety warning, significantly improving the safety and efficiency of underground operations. The implementation of this method relies on the device of the present invention, ensuring the integrity and feasibility of the technical solution;

[0171] Example 10

[0172] As a preferred example, the measuring assembly 4 includes three sets of measuring rulers 401, which are parallel to each other and arranged at a preset distance. Such a configuration allows the device to switch between a vertical state and a horizontal state to meet different measurement requirements.

[0173] The second driving module 402 includes three groups of sub-driving modules, and each group of sub-driving modules is responsible for driving a group of measuring rulers 401. This design ensures that the three groups of measuring rulers 401 can be operated independently, thereby improving the flexibility and accuracy of measurement.

[0174] When the end of the end arm 203 touches the bottom, the control module issues a command to switch the three sets of measuring rulers 401 from a vertical state to a horizontal state, ready for measuring the pipe diameter.

[0175] After the end arm 203 touches the bottom, the three groups of sub-driving modules drive the corresponding measuring ruler 401 to move upwards until the measuring ruler 401 touches the top of the pipe wall. This step is achieved by the force sensor on the measuring ruler 401. When the measuring ruler 401 touches the pipe wall, the force sensor sends a signal to the control module.

[0176] When the measuring ruler 401 touches the top of the pipe wall, the corresponding sub-driving module stops driving after receiving the signal from the force sensor. This process ensures that the measuring ruler 401 will not be overstretched, thereby ensuring the accuracy of the measurement.

[0177] The control module records the revolutions of the three groups of sub-drive modules respectively, which are key data for calculating well depth and pipe diameter.

[0178] The control module calculates the pipe diameter using the recorded number of revolutions combined with the design parameters of the measuring ruler 401. The calculation process can be completed through a built-in algorithm or an APP on the smart terminal.

[0179] The calculated pipe diameter results are displayed to the operator through the intelligent terminal, ensuring the readability and ease of use of the measurement results.

[0180] While measuring the pipe diameter, the intelligent monitoring terminal continues to monitor the underground environment in real time to ensure the safety of operators.

[0181] All measurement data and environmental monitoring data will be stored in the control module for subsequent analysis and recording.

[0182] Specifically, first, the support device 1 is fixed to the wellhead to ensure the stability of the device. The initial position of the telescopic assembly 2 is recorded by the position recording module in the middle of the support arm 101 to provide a reference point for subsequent measurements.

[0183] The control module is started, and the telescopic assembly 2 is controlled by the first driving module 3 to conduct detection along the depth of the well. This process continues until the pressure sensor at the end of the end arm 203 detects that the end of the end arm 203 touches the bottom.

[0184] Once the end of the end arm 203 touches the bottom, the control module immediately controls the second driving module 402 to drive the three sets of measuring rulers 401 to unfold. These measuring rulers 401 automatically switch from a vertical state to a horizontal state after the end arm 203 touches the bottom, ready for pipe diameter measurement.

[0185] The three groups of sub-driving modules drive the corresponding measuring rulers 401 to move upwards respectively until the force sensors of each group of measuring rulers 401 touch the top of the pipe wall. This step ensures that the measuring rulers 401 are in contact with the pipe wall, providing a basis for accurately measuring the pipe diameter.

[0186] The control module receives the movement data recorded by the position recording module and records the number of revolutions of the first driving module 3 and the second driving module 402. Using these data, the control module calculates the first, second and third position coordinates of the three sets of measuring rulers 401.

[0187] The control module calculates the well depth by recording the number of revolutions of the first driving module 3 and combining the design parameters of the sliding arm 202 .

[0188] The control module uses the position coordinates of the three sets of measuring rulers 401 to calculate the pipe diameter through a preset algorithm such as a three-point common circle algorithm.

[0189] The calculated well depth and pipe diameter data are sent to the smart terminal through the wireless communication module. The APP of the smart terminal receives these data and displays them to the operator.

[0190] While measuring the pipe diameter, the intelligent monitoring terminal continues to monitor the underground environment in real time, including gas composition, temperature and operating scenarios, to ensure the safety of operators.

[0191] All measurement data and environmental monitoring data will be stored in the control module for subsequent analysis and recording.

[0192] Through the above implementation, the pipeline detection method of the present invention can accurately measure the diameter of the underground pipeline, while ensuring the safety and efficiency of the operation. The implementation of the method relies on the device of the present invention, ensuring the integrity and feasibility of the technical solution.

[0193] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A downhole pipeline detection device, characterized in that: The invention comprises a support device (1), a telescopic component (2), a measuring component (4) and a control module, wherein the support device (1) is used to support a detection device at a wellhead; the telescopic component (2) is arranged on the support device (1) in a lateral sliding manner; a position recording module is arranged on the support device (1) for recording lateral movement data of the telescopic component (2); the telescopic component (2) is provided with a first driving module (3), the first driving module (3) is used to drive the telescopic component (2) to vertically telescope, and a pressure sensor is arranged at the bottom of the telescopic end of the telescopic component (2); the measuring component (4) is arranged at the telescopic end of the telescopic component (2), the measuring component (4) comprises a measuring ruler (401) and a second driving module (402) for driving the measuring ruler (401) to move in a vertical direction, and a force sensor is arranged on the measuring ruler (401); the control module is used to receive the pressure sensor signal, the force sensor signal and the movement data of the position recording module, control and record the movement of the first driving module (3) and the second driving module (402), and calculate the well depth and pipe diameter.

2. A downhole pipeline detection device according to claim 1, characterized in that: The support device (1) comprises a support arm (101), and support portions (102) are arranged at both ends of the support arm (101); the position recording module is arranged in the middle of the support arm (101); the telescopic assembly (2) comprises a base arm (201), a sliding arm (202) and an end arm (203); the base arm (201) and the middle of the support arm (101) are connected in a transverse sliding manner, one side of the sliding arm (202) is connected in a vertical sliding manner to the base arm (201), and the other side of the sliding arm (202) is connected in a vertical sliding manner to the end arm (203); the telescopic end of the telescopic assembly (2) is the end arm (203), the pressure sensor is arranged at the bottom of the end arm (203), and the first driving module (3) is used for driving the base arm (201), the sliding arm (202) and the end arm (203) to vertically telescope simultaneously.

3. A downhole pipeline detection device according to claim 2, characterized in that: The sliding arms (202) include a plurality of groups, the top of the base arm (201) is connected to the middle of the support arm (101), the base arm (201) is provided with a rack (5), the first driving module (3) is provided with a gear meshing with the rack (5), the first driving module (3) is provided on the first group of sliding arms (202) slidably connected to the base arm (201), the end of the base arm (201) is connected with the first end of a connecting rope (6), the connecting rope (6) is connected to a first pulley provided at the end of the first group of sliding arms (202), and then sequentially connected to a second upper pulley at the top of the second group of sliding arms (202), a second lower pulley at the end of the second group of sliding arms (202), a third upper pulley at the top of the third group of sliding arms (202), a third lower pulley at the end of the third group of sliding arms (202), and sequentially connected to the remaining sliding arms (202), until the second end of the connecting rope (6) is connected to the top of the end arm (203).

4. A downhole pipeline detection device according to claim 1, characterized in that: The measuring assembly (4) further comprises a steering gear (403), the measuring ruler (401) being mounted on the steering gear (403), the second driving module (402) being used to drive the steering gear (403) to move, the steering gear (403) being used to retract the measuring ruler (401) before the pressure sensor touches the bottom or when the pipeline detection device is retracted, the measuring ruler (401) being kept in a vertical state, and the measuring ruler (401) being unfolded when the pressure sensor touches the bottom to measure the pipe diameter.

5. A downhole pipeline detection device according to claim 1, characterized in that: The pressure sensor is arranged in a bottoming ball (7) at the telescopic end of the telescopic assembly (2), and the bottoming ball (7) is used to protect the pressure sensor.

6. A downhole pipeline detection device according to claim 2, characterized in that: Both ends of the support arm (101) are provided with telescopic rods, one end of the telescopic rod is coaxially connected to the support arm (101), and the other end of the telescopic rod is fixedly connected to the support portion (102).

7. A downhole pipeline detection device according to claim 1, characterized in that: A third driving module is also provided at the connection between the telescopic component (2) and the supporting device (1), and is used to drive the telescopic component (2) to slide horizontally on the supporting device (1); the third driving module is electrically connected to the position recording module; the control module is electrically connected to the third driving module and the position recording module; the control module is further used to control the position of the telescopic component (2) by controlling the third driving module, and to receive movement data recorded by the position recording module.

8. A downhole pipeline detection device according to claim 1, characterized in that: The telescopic end of the telescopic component (2) is also provided with an intelligent monitoring terminal for real-time monitoring of underground environmental conditions, including gas, temperature and operation scenes, and for wirelessly communicating with the control module to send monitoring data to the control module for analysis; the control module is provided with a neural network algorithm for receiving the monitoring data to identify the changing trends of oxygen and toxic gases in the well, and to provide gas safety warnings.

9. A downhole pipeline detection method, based on a downhole pipeline detection device according to any one of claims 1 to 8, characterized in that: The following steps are included: The support device (1) is fixed at the wellhead, and the initial position of the telescopic component (2) is recorded by a position recording module; The first driving module (3) is controlled by the control module to make the telescopic component (2) go deeper into the well for detection until the pressure sensor detects that the telescopic end of the telescopic component (2) touches the bottom; When the telescopic end of the telescopic component (2) touches the bottom, the control module controls the second driving module (402) to drive the measuring ruler (401) to unfold and move vertically upward until the force sensor touches the top of the pipe wall, and the control module receives the movement data recorded by the position recording module, records the number of revolutions of the first driving module (3) and the second driving module (402), and calculates the first position coordinate of the measuring ruler (401) at this time; The control module calculates the well depth by recording the number of revolutions of the first driving module (3); The control module controls the second driving module (402) to drive the measuring ruler (401) to move downward and retract; The telescopic component (2) adjusts its position in the transverse direction, and records the second position of the telescopic component (2) through a position recording module; The control module controls the second driving module (402) to drive the measuring ruler (401) to unfold and move upward until the force sensor touches the top of the pipe wall; The control module receives the second position movement data recorded by the position recording module, records the number of revolutions of the first driving module (3) and the second driving module (402), and calculates the second position coordinates of the measuring ruler (401) at this time; The control module controls the second driving module (402) to drive the measuring ruler (401) to move downward and retract; The telescopic component (2) is adjusted in a transverse direction, and a third position of the telescopic component (2) is recorded by a position recording module; The control module controls the second driving module (402) to drive the measuring ruler (401) to unfold and move upward until the force sensor touches the top of the pipe wall; The control module receives the third position movement data recorded by the position recording module, records the number of revolutions of the first driving module (3) and the second driving module (402), and calculates the third position coordinates of the measuring ruler (401) at this time; The control module calculates the pipe diameter through the first position coordinate, the second position coordinate and the third position coordinate.

10. A downhole pipeline detection method according to claim 9, characterized in that: The following steps are also included: When the telescopic end of the telescopic component (2) touches the bottom, the underground environmental conditions are monitored in real time through the intelligent monitoring terminal arranged on the telescopic end of the telescopic component (2), including gas composition, temperature and operation scene; The intelligent monitoring terminal sends the monitored environmental data to the control module via wireless communication; After receiving the environmental data, the control module uses the built-in neural network algorithm to process the data; The control module uses a neural network algorithm to analyze the changing trends of oxygen and toxic gases underground; Based on the results of gas trend analysis, the control module generates gas safety warning information; The control module sends the generated gas safety warning information to the well operators or the remote monitoring center via wireless communication.

Images