Pipeline airtightness detection system and method

Abstract

The invention discloses a pipeline air tightness detection system and method, and relates to the technical field of pipeline detection, the pipeline air tightness detection system comprises a magnetic field control and adjustment assembly, a pipeline adjustment assembly, a front-end pipeline internal detection assembly and a flexible adjustment rod, and the whole system is composed of the magnetic field control and adjustment assembly, the pipeline adjustment assembly, the front-end pipeline internal detection assembly and the flexible adjustment rod. According to the invention, modularized installation is realized, magnetic particle suspension liquid detection is utilized, pipeline leakage points are positioned through magnetic field changes, ultrasonic detection is utilized, internal structure defects and wall thickness changes of the pipeline are detected, a microstructure is detected through a quantum tunneling effect, a multi-dimensional detection method is formed, the pipeline condition is comprehensively evaluated, and the whole device is simple and convenient to operate, high in detection precision and high in reliability. The device is simple in structure and easy to operate by workers, can quickly detect a water pipe, an air pipe and an oil pipe, timely discover tiny manufacturing defects and improve the quality and safety of the whole vehicle in the fuel vehicle production process, and assists maintenance personnel to efficiently formulate a scheme, shorten the maintenance time and reduce the cost in the maintenance process.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and in particular to a pipeline air tightness detection system and method. Background Art

[0002] The air tightness of the water pipes, air pipes, and oil pipes of fuel vehicles is extremely important. Any tiny leak may lead to fuel leakage, cooling system failure, abnormal engine intake, and other problems, affecting vehicle performance and even causing safety accidents. In the early days, simple pressure tests and appearance inspections were mainly used for air tightness testing. With the continuous development of automobile technology, the structure and system of vehicles have become more and more complex, and the accuracy and efficiency requirements for air tightness testing of each pipeline have become higher and higher. As a result, detection methods based on specific gases such as halogen leak detection and helium leak detection have emerged, as well as non-contact detection technologies using physical principles such as ultrasound and infrared thermal imaging. Detection equipment has also gradually developed in the direction of automation and intelligence.

[0003] In the prior art, water pipes or oil pipes are filled with water and a certain pressure is applied to observe whether there is a water leak. However, this method is difficult to accurately detect small leaks, and the pipeline needs to be dried after detection, otherwise it may cause rust inside the pipeline or damage other components. In addition, it is difficult to observe whether there is a water leak for pipelines buried in the complex structure inside the vehicle. Compressed air is filled into the pipeline, and whether there is a leak is judged by listening to the sound or applying soapy water to observe the bubbles. The detection accuracy of small leaks is low, and it is greatly affected by environmental noise and human factors. It can only detect obvious leaks, and it is easy to miss small and slow leaks. Therefore, it is necessary to propose a pipeline air tightness detection system and method. Summary of the invention

[0004] The purpose of the present invention is to provide a pipeline air tightness detection system and method to solve the problem that the above-mentioned background technology proposes that water pipes or oil pipes are filled with water and a certain pressure is applied to observe whether there is water leakage, it is difficult to accurately detect small leaks, and the pipeline needs to be dried after detection, otherwise it may cause rust inside the pipeline or other parts to be damaged. In addition, it is difficult to observe whether there is water leakage for pipelines buried in complex structures inside vehicles. Compressed air is filled into the pipeline, and leaks are judged by listening to the sound or applying soapy water to observe bubbles. The detection accuracy of small leaks is low, it is greatly affected by environmental noise and human factors, and it can only detect obvious leaks, and it is easy to miss small and slow leaks.

[0005] To achieve the above object, the present invention provides the following technical solutions: a pipeline air tightness detection system, comprising a magnetic field control and adjustment component, a pipeline adjustment component, a front-end pipeline internal detection component and a flexible adjustment rod, wherein the pipeline adjustment component is arranged in multiple sections at the connection end of the magnetic field control and adjustment component and the front-end pipeline internal detection component to form a modular installation; A flexible electric control magnetic coil is installed inside the flexible adjustment rod; The magnetic field control and adjustment component includes a strong electromagnetic control regulator, a connection card and a rear airbag, the side end of the flexible adjustment rod and the strong electromagnetic control regulator form an electrical circuit connection, the rear airbag is installed outside the connection card, and the magnetic field control and adjustment component is used to form a control magnetic field outside the pipeline when detecting the pipeline; The pipeline adjustment component includes a magnetic particle suspension guiding chamber, four groups of guiding cavities and an appropriate amount of injection end. The side ends of the four groups of guiding cavities are connected to the appropriate amount of injection end. The pipeline adjustment component is used to evenly distribute the magnetic particle suspension inside the pipeline when detecting the air tightness of the pipeline, and cooperate with the magnetic field control adjustment component and the flexible adjustment rod to calculate the area of ​​magnetic field change, so as to accurately locate the leakage point; The front-end pipeline internal detection component is used to automatically adapt and adjust according to the diameter of the pipeline, thereby forming a driving source, driving the pipeline adjustment component to cooperate with the quantum detection adjustment seat to use the quantum tunneling effect to conduct a comprehensive detection of the inside of the pipeline.

[0006] Preferably, a pump is installed inside the magnetic particle suspension guiding chamber, and the side end of the pump is connected to an annular guiding chamber, and the annular guiding chamber is connected to the four groups of guiding chambers. The side end of the magnetic particle suspension guiding chamber is connected to a recovery chamber, and the side end of the recovery chamber is connected to a two-stage servo drive motor through a fixed frame.

[0007] Preferably, the other side end of the magnetic particle suspension guiding chamber is connected to an ultrasonic detection integrated sensor group, the side end of the ultrasonic detection integrated sensor group is rotatably connected to a first swivel through an axle joint, the internal rotation of the first swivel is connected to a universal joint component, the side end of the universal joint component is rotatably connected to a second swivel, and the side end of the second swivel is connected to a servo drive motor.

[0008] Preferably, the side end of the strong electromagnetic control regulator is fastened with a connecting plate, and the side end of the connecting plate is rotationally connected to a top frame arm and a force-bearing frame arm through two sets of rotation nodes, and a main force-bearing curved rod and an auxiliary force-bearing curved rod are rotationally connected to the surface of the top frame arm through two rotation grooves, and the bottom side end of the auxiliary force-bearing curved rod is rotationally connected to the side end of the force-bearing frame arm.

[0009] Preferably, a travel arm is installed on the outside of the main force-bearing curved rod and the auxiliary force-bearing curved rod, and a pneumatic cylinder is installed on the side end of the travel arm. The output end of the pneumatic cylinder connects the bottom connection points of the main force-bearing curved rod and the auxiliary force-bearing curved rod through an output rod to form a connection setting, and a flexible hollow telescopic rod is connected to the side end of the output rod, and the side end of the flexible hollow telescopic rod is fastened to the side of the connecting clip.

[0010] Preferably, the front-end pipeline internal detection component includes a front-end airbag, a micro air pump is installed on the side end of the front-end airbag, a control drive servo motor is installed inside the surface of the side wall connecting piece of the front-end airbag, a guide stabilizing sliding column frame is installed on the peripheral side of the surface of the side wall connecting piece of the front-end airbag, the quantum detection adjustment seat is located outside the guide stabilizing sliding column frame to form a sliding connection, and the quantum detection adjustment seat is composed of a quantum detection sensor and a sliding adjustment seat.

[0011] Preferably, the output end of the control drive servo motor is connected to a first gear, the side end of the first gear is meshed with a second gear, the center end of the second gear is connected to a threaded screw, the threaded screw is installed inside the guide stabilizing slide frame, and the quantum detection adjustment seat is synchronously located outside the threaded screw to form a sliding connection.

[0012] Preferably, the outer circumference of the quantum detection adjustment seat is equally connected to three groups of crank arm force rods for rotation, the side ends of the three groups of crank arm force rods are all connected to contact adjustment rods for rotation, an output control motor is installed on the front end outer wall surface of one group of contact adjustment rods, and the output end of the output control motor is connected to a speed shaft.

[0013] Preferably, the side end of the speed shaft is connected to a first small bevel gear, the side end of the first small bevel gear is meshingly connected with a second small bevel gear, a speed sensor is installed on the side of the second small bevel gear, and the bottom end of the second small bevel gear passes through the front end mounting groove of the contact adjustment rod and is connected to a contact friction wheel.

[0014] A method for pipeline air tightness detection system, comprising the following steps: S1. First, connect the magnetic field control and adjustment components and the front-end pipeline internal detection components through a multi-section pipeline adjustment component and install them modularly to ensure that the components work together. Install a flexible electric control magnetic coil in the flexible adjustment rod and connect it with the strong electromagnetic control regulator in the magnetic field control and adjustment component through an electrical circuit. At the same time, install the rear-end airbag outside the connection card to prepare for subsequent detection. S2. Then, the front-end pipeline internal detection component is automatically adapted and adjusted according to the size of the pipeline diameter. Subsequently, the quantum detection adjustment seat uses the quantum tunneling effect to start a comprehensive detection of the inside of the pipeline. At the same time, during the detection process, the front-end airbag is inflated or deflated by a micro air pump to adjust the sealing connection state between the front-end pipeline internal detection component and the pipeline, and the rear-end airbag is inflated or deflated, and the sealing connection state of the other end of the pipeline is adjusted synchronously, so that the overall pipeline forms a closed structure; S3, then, start the pipeline adjustment component, the pump starts to work, pumps the magnetic particle suspension from the magnetic particle suspension guide chamber into the annular guide chamber, and then evenly injects it into the pipeline from the appropriate injection end through four groups of guide chambers, so that the magnetic particle suspension is distributed in the entire pipeline, and the ultrasonic detection integrated sensor group, driven by a servo drive motor, a universal joint and other components, performs auxiliary detection on the pipeline, and pulls or pushes the flexible adjustment rod to adjust the shape of the pipeline through an external mechanical arm, so that the flexible adjustment rod is located outside the pipeline to form an effective magnetic field, and then the magnetic field control adjustment component starts to work, and the strong electromagnetic control regulator generates a control magnetic field, which cooperates with the flexible electric control magnetic coil of the flexible adjustment rod. When there is a leak in the pipeline, the flow state of the magnetic particle suspension at the leak changes, which leads to a change in the magnetic field. By analyzing the magnetic field change area, the leak point is accurately located. In this process, the travel arm, the pneumatic cylinder and the flexible hollow telescopic rod are used to adjust the position and state of the magnetic field control adjustment component to meet the detection needs of different pipelines; S4. Then, after the detection is completed, the recovery chamber is connected to the magnetic particle suspension guide chamber, and the recovery chamber is used to recover the remaining magnetic particle suspension. Or after the detection is completed, the used magnetic particle suspension is purified by an external purification device and then injected into the recovery chamber again for subsequent reuse.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a servo drive motor drives the subsequent structure to form a direction adjustment through the cooperation of the pipeline adjustment component, the magnetic field control adjustment component and the flexible adjustment rod through the second swivel, the universal joint and the first swivel. Through multi-stage installation, according to the material of the pipeline, when it is a hose, the shape of the pipeline is driven to change and adjusted to a linear structure, so that the adjusted pipeline and the flexible adjustment rod form an axis parallel state, which optimizes the magnetic field detection conditions and improves the detection accuracy. When it is a hard pipeline, the whole is dynamically adjusted by the pipeline adjustment component and is located inside the pipeline to form a physical fit. At this time, the ultrasonic detection integrated sensor group performs ultrasonic detection on the pipeline, and uses the ultrasonic detection integrated sensor group to detect structural defects, wall thickness changes and other information inside the pipeline, so as to provide more data support for the overall condition evaluation of the pipeline. In the detection process, when If the detection data of a certain area of ​​the pipeline is found to be abnormal or certain parts need to be inspected in detail, the rotation angle and direction of a servo drive motor can be controlled, and the position and angle of the ultrasonic detection integrated sensor group can be flexibly adjusted by using structures such as universal joints to conduct more detailed inspections of the area. After the detailed inspection, the shape of the pipeline is changed again, and the leakage point is located by magnetic particle suspension inspection using magnetic field changes. Ultrasonic inspection focuses on the detection of internal structural defects and wall thickness changes in the pipeline, forming a multi-dimensional inspection method, which can provide a more comprehensive assessment of the pipeline condition in pipeline inspection. The overall operation is simple and the inspection accuracy is high, which can effectively enable workers to get started quickly and conduct comprehensive inspections on the water pipes, air pipes, and oil pipes of newly produced fuel vehicles. Minor manufacturing defects in the pipeline, such as sand holes and cracks, can be discovered in time to prevent problematic vehicles from entering the market and improve the quality and safety of the entire vehicle.

[0016] 2. In the present invention, the microstructure information of the pipeline material is obtained by using the quantum tunneling effect in cooperation with the detection component inside the front-end pipeline to determine whether the pipeline has defects. The speed sensor monitors the rotation speed of the second small bevel gear in real time, thereby knowing the rotation speed of the contact friction wheel, and indirectly reflecting the moving speed of the quantum detection adjustment seat in the pipeline. The monitored data is transmitted to the external PLC controller together with the data obtained by the quantum detection sensor for real-time analysis. After the overall detection, it stops after passing through one end of the pipeline, so that the front-end airbag contacts the inner wall of one end of the pipeline. Then, the front-end airbag is inflated by a micro air pump to make it fit tightly against the inner wall of one end of the pipeline to achieve sealing and fixation, providing stable support for subsequent pipeline adjustment component detection. The transmission adjustment of each component formed as a whole reduces the detection blind spots and misjudgments existing in traditional detection methods, and detects abnormal conditions in time, providing more comprehensive and accurate detection data for pipeline detection, ensuring the safe operation of the pipeline, and helping maintenance personnel to efficiently formulate maintenance plans, shorten maintenance time, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of a pipeline air tightness detection system of the present invention; Figure 2 It is a schematic structural diagram of a pipeline air tightness detection system in a side view of the present invention; Figure 3 It is a structural schematic diagram of a magnetic field control and adjustment component in a pipeline air tightness detection system of the present invention; Figure 4 It is a structural schematic diagram of a pipeline adjustment component in a pipeline air tightness detection system of the present invention; Figure 5 It is a schematic diagram of the internal structure of a magnetic particle suspension guiding chamber in a pipeline air tightness detection system of the present invention; Figure 6 It is a structural schematic diagram of a front-end pipeline internal detection component in a pipeline air tightness detection system of the present invention; Figure 7 The present invention is a pipeline air tightness detection system Figure 6 A schematic diagram of the enlarged structure at point A; Figure 8 The present invention is a pipeline air tightness detection system Figure 6 Schematic diagram of the enlarged structure at B.

[0018] In the figure: 1. magnetic field control and adjustment component; 11. pneumatic cylinder; 12. travel arm; 13. main force-bearing curved rod; 14. auxiliary force-bearing curved rod; 15. force-bearing frame arm; 16. top frame arm; 17. connecting plate; 18. strong electromagnetic control regulator; 19. flexible hollow telescopic rod; 110. connecting card; 111. rear airbag; 2. pipeline adjustment component; 21. one-stage servo drive motor; 22. second swivel; 23. universal joint; 24. first swivel; 25. ultrasonic detection integrated sensor group; 26. recovery chamber; 27. two-stage servo drive motor; 28. magnetic particle suspension guide chamber; 29, guide chamber; 290, appropriate amount injection end; 291, pumping device; 292, annular guide chamber; 3, front end pipeline internal detection component; 31, front end air bag; 32, micro air pump; 33, control drive servo motor; 34, threaded screw; 35, guide stable slide frame; 36, quantum detection adjustment seat; 37, crank arm force rod; 38, contact adjustment rod; 39, contact friction wheel; 390, output control motor; 391, first gear; 392, second gear; 393, speed shaft; 394, first small bevel gear; 395, second small bevel gear; 4, flexible adjustment rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Reference Figure 1 - Figure 8 As shown: a pipeline air tightness detection system, including a magnetic field control and adjustment component 1, a pipeline adjustment component 2, a front-end pipeline internal detection component 3 and a flexible adjustment rod 4, the pipeline adjustment component 2 is arranged in multiple sections at the connection end of the magnetic field control and adjustment component 1 and the front-end pipeline internal detection component 3 to form a modular installation; A flexible electric control magnetic coil is installed inside the flexible adjustment rod 4; The magnetic field control and adjustment component 1 includes a strong electromagnetic control regulator 18, a connecting card 110 and a rear end airbag 111. The side end of the flexible adjustment rod 4 and the strong electromagnetic control regulator 18 form an electrical circuit connection. The rear end airbag 111 is installed on the outside of the connecting card 110. The magnetic field control and adjustment component 1 is used to form a control magnetic field outside the pipeline when detecting the pipeline.

[0021] The side end of the strong electromagnetic control regulator 18 is fastened with a connecting plate 17, and the side end of the connecting plate 17 is rotationally connected to a top frame arm 16 and a force-bearing frame arm 15 through two sets of rotation nodes. The main force-bearing curved rod 13 and an auxiliary force-bearing curved rod 14 are rotationally connected to the surface of the top frame arm 16 through two rotating grooves, and the bottom side end of the auxiliary force-bearing curved rod 14 is rotationally connected to the side end of the force-bearing frame arm 15.

[0022] A travel arm 12 is installed outside the main force-bearing curved rod 13 and the auxiliary force-bearing curved rod 14, and a pneumatic cylinder 11 is installed on the side end of the travel arm 12. The output end of the pneumatic cylinder 11 connects the bottom connection points of the main force-bearing curved rod 13 and the auxiliary force-bearing curved rod 14 through an output rod to form a connection setting. The side end of the output rod is connected to a flexible hollow telescopic rod 19, and the side end of the flexible hollow telescopic rod 19 is fastened to the side of the connecting clamp 110.

[0023] In a specific scheme, before the air tightness test of the pipeline is carried out, the magnetic field control and adjustment component 1, the pipeline adjustment component 2, and the front-end pipeline internal detection component 3 are modularly installed and connected through the pipeline adjustment component 2 to ensure that the components can work together and ensure that the electrical connection of the flexible electric control magnetic coil inside the flexible adjustment rod 4 and the strong electromagnetic control regulator 18 is normal. Then, the entire detection device drives the pipeline adjustment component 2 to approach and enter the interior of the pipeline to be detected through the front-end pipeline internal detection component 3, so that the rear-end airbag 111 is in sealing contact with the end of the pipeline. At this time, the pneumatic cylinder 11 is started, and the output rod at the output end of the pneumatic cylinder 11 pushes the main force-bearing curved rod 13 and the auxiliary force-bearing curved rod 14, and the flexible hollow telescopic rod 19 is extended through the stroke arm 12, and the position of the connecting card 110 is adjusted, so that the magnetic field control and adjustment component 1 is firmly installed at a suitable position outside the pipeline, ensuring that the strong electromagnetic control regulator 18 can effectively form a control magnetic field for the pipeline. When the whole is in place, the strong electromagnetic control regulator 18 is started to generate a control magnetic field, and the flexible electric control magnetic coil of the flexible adjustment rod 4 acts on the strong electromagnetic control regulator 18. Under the condition of the pipeline, the pipeline regulating component 2 and the front-end pipeline internal detection component 3 are used to perform their respective detection work synchronously. For example, the pipeline regulating component 2 injects magnetic particle suspension to cooperate with the magnetic field to detect the leakage point, and the front-end pipeline internal detection component 3 uses the quantum tunneling effect to detect the internal condition of the pipeline. In the overall detection process, when it is found that the magnetic field distribution is uneven or the detection signal is abnormal, at this time, by controlling the extension and retraction of the output rod of the pneumatic cylinder 11, the angles of the main force-bearing curved rod 13 and the auxiliary force-bearing curved rod 14 are changed, and then the position of the connection card 110 and the distance between the strong electromagnetic control regulator 18 and the flexible adjustment rod 4 and the outer wall of the pipeline are adjusted, so that the relative position of the strong electromagnetic control regulator 18 and the pipeline is optimized to ensure that the magnetic field can act evenly on the pipeline. At the same time, according to the material, diameter and accuracy requirements of the pipeline, the input current or voltage of the strong electromagnetic control regulator 18 can be adjusted to change the magnetic field strength it generates, and the current of the flexible electric control magnetic coil in the flexible adjustment rod 4 can be adjusted to adjust the induced magnetic field strength to meet the detection requirements of different pipelines.

[0024] Embodiment 2: According to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the pipeline regulating component 2 includes a magnetic particle suspension guiding chamber 28, four groups of guiding cavities 29 and an appropriate amount injection end 290. The side ends of the four groups of guiding cavities 29 are connected to the appropriate amount injection end 290. The pipeline regulating component 2 is used to evenly distribute the magnetic particle suspension inside the pipeline when detecting the air tightness of the pipeline, and cooperate with the magnetic field control regulating component 1 and the flexible regulating rod 4 to calculate the area of ​​magnetic field change, so as to accurately locate the leakage point.

[0025] A pump 291 is installed inside the magnetic particle suspension guiding chamber 28, and the side end of the pump 291 is connected to an annular guiding chamber 292, and the annular guiding chamber 292 is connected to the four groups of guiding chambers 29. The side end of the magnetic particle suspension guiding chamber 28 is connected to a recovery chamber 26, and the side end of the recovery chamber 26 is connected to a two-stage servo drive motor 27 through a fixed frame.

[0026] The other side end of the magnetic particle suspension guiding chamber 28 is connected to an ultrasonic detection integrated sensor group 25, and the side end of the ultrasonic detection integrated sensor group 25 is rotatably connected to a first swivel 24 through an axle joint, and the internal rotation of the first swivel 24 is connected to a universal joint 23, and the side end of the universal joint 23 is rotatably connected to a second swivel 22, and the side end of the second swivel 22 is connected to a servo drive motor 21.

[0027] In a specific scheme, at the beginning of the detection, the pump 291 is started, so that the pump 291 draws the magnetic particle suspension from the magnetic particle suspension guide chamber 28, and evenly distributes it to the four groups of guide chambers 29 through the annular guide chamber 292, and then injects it into the inside of the pipeline to be detected through the appropriate injection end 290, so that the magnetic particle suspension is evenly distributed in the pipeline, in preparation for the subsequent use of magnetic field changes to detect leakage points. After the magnetic particle suspension is injected into the pipeline, the magnetic field control and adjustment component 1 and the flexible adjustment rod 4 work together to form a stable magnetic field outside the pipeline. If there is a leak in the pipeline, the magnetic particle suspension at the leak will flow out, causing the local magnetic field to change. Monitor the change of magnetic field, calculate the area of ​​magnetic field change by combining with algorithm, so as to accurately locate the leakage point. After the detection is completed, the remaining magnetic particle suspension in the pipeline is pumped back to the magnetic particle suspension guide chamber 28 through the recovery chamber 26 for the next detection and use, so as to realize the recycling of resources. Alternatively, after the detection is completed, the used magnetic particle suspension is purified by an external purification device and then injected into the recovery chamber 26 again for subsequent reuse. At the same time, during the injection of magnetic particle suspension or the recovery process, a servo drive motor 21 can be started, so that a servo drive motor 21 drives the subsequent structure to form through the second swivel 22, the universal joint 23 and the first swivel 24. Direction adjustment, through multi-stage installation, according to the material of the pipeline, when it is a soft pipe, the shape of the pipeline is changed and adjusted to a linear structure, so that the adjusted pipeline and the flexible adjustment rod 4 (or can be pulled or pushed by an external mechanical arm to synchronously follow the shape change of the pipeline during the detection operation) form an axis parallel state, which optimizes the conditions for magnetic field detection and improves the detection accuracy. When it is a hard pipeline, the whole is dynamically adjusted by the pipeline adjustment component 2, and the shape fit is formed inside the pipeline. At this time, the ultrasonic detection integrated sensor group 25 performs ultrasonic detection on the pipeline, and uses the ultrasonic detection integrated sensor group 25 to detect structural defects and wall thickness changes inside the pipeline. Information provides more data support for the overall condition assessment of the pipeline. During the detection process, when it is found that the detection data of a certain area of ​​the pipeline is abnormal or certain parts need to be detected in particular, the rotation angle and direction of a servo drive motor 21 can be controlled, and the position and angle of the ultrasonic detection integrated sensor group 25 can be flexibly adjusted by using structures such as the universal joint 23 to conduct a more detailed detection of the area. After the detailed detection, the pipeline shape is changed again, and the leakage point is located by the change of the magnetic field through the magnetic particle suspension detection as a whole. The ultrasonic detection focuses on the detection of internal structural defects and wall thickness changes in the pipeline, forming a multi-dimensional detection method, so that a more comprehensive pipeline condition assessment can be provided in the pipeline detection.

[0028] Embodiment 3: According to Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the front-end pipeline internal detection component 3 includes a front-end airbag 31, a micro air pump 32 is installed at the side end of the front-end airbag 31, a control drive servo motor 33 is installed inside the surface of the side wall connecting piece of the front-end airbag 31, a guide stabilizing slide column frame 35 is installed on the peripheral side of the side wall connecting piece surface of the front-end airbag 31, and a quantum detection adjustment seat 36 is located outside the guide stabilizing slide column frame 35 to form a sliding connection. The quantum detection adjustment seat 36 is composed of a quantum detection sensor and a sliding adjustment seat.

[0029] The output end of the control driving servo motor 33 is connected to a first gear 391, the side end of the first gear 391 is meshedly connected to a second gear 392, the center end of the second gear 392 is connected to a threaded screw 34, the threaded screw 34 is installed inside the guide stabilizing slide frame 35, and the quantum detection adjustment seat 36 is synchronously located outside the threaded screw 34 to form a sliding connection.

[0030] The outer circumference of the quantum detection adjustment seat 36 is equally connected to three groups of crank arm force rods 37 for rotation, and the side ends of the three groups of crank arm force rods 37 are all connected to contact adjustment rods 38 for rotation. An output control motor 390 is installed on the front end outer wall surface of one group of contact adjustment rods 38, and the output end of the output control motor 390 is connected to a speed shaft 393.

[0031] The side end of the speed shaft 393 is connected to a first small bevel gear 394, the side end of the first small bevel gear 394 is meshingly connected to a second small bevel gear 395, a speed sensor is installed on the side of the second small bevel gear 395, and the bottom end of the second small bevel gear 395 passes through the front end mounting groove of the contact adjustment rod 38 and is connected to a contact friction wheel 39.

[0032] In a specific solution, during detection, the control driving servo motor 33 is started, and its output end drives the first gear 391 to rotate, and through the meshing with the second gear 392, the threaded screw 34 is rotated, thereby driving the quantum detection adjustment seat 36 to slide on the guide stable slide column frame 35 and adjust to a suitable initial detection position. Then, when the quantum detection adjustment seat 36 moves into place, the three sets of crank arm force rods 37 on its outer circumference extend to make the contact adjustment rod 38 contact the inner wall of the pipeline. At the same time, the output control motor 390 is started, and the speed shaft 393 at its output end drives the first small bevel gear 394 to rotate, and then drives the contact friction wheel 39 to rotate through the second small bevel gear 395, so that the contact adjustment rod 38 moves on the inner wall of the pipeline, driving the quantum detection adjustment seat 36 to move along the inner wall of the pipeline. During the movement, the quantum detection sensor detects the internal condition of the pipeline in real time, and uses the quantum tunneling effect to obtain pipeline materials. The microstructure information of the pipeline is used to determine whether there are defects in the pipeline. The speed sensor monitors the rotation speed of the second small bevel gear 395 in real time, thereby knowing the rotation speed of the contact friction wheel 39, which indirectly reflects the moving speed of the quantum detection adjustment seat 36 in the pipeline. The monitored data is transmitted to the external PLC controller together with the data obtained by the quantum detection sensor for real-time analysis. After the overall detection, it stops after passing through one end of the pipeline, so that the front airbag 31 contacts the inner wall of one end of the pipeline, and then the front airbag 31 is inflated by the micro air pump 32 to make it fit tightly against the inner wall of one end of the pipeline to achieve sealing and fixation, providing stable support for subsequent pipeline adjustment component 2 detection. The transmission adjustment of each component formed as a whole reduces the detection blind spots and misjudgments of traditional detection methods, and detects abnormal conditions in time, providing more comprehensive and accurate detection data for pipeline detection, and ensuring the safe operation of the pipeline.

[0033] The wiring diagram of the strong electromagnetic control regulator 18, the first-stage servo drive motor 21, the ultrasonic detection integrated sensor group 25, the second-stage servo drive motor 27, the control drive servo motor 33, the quantum detection sensor and the speed sensor in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the strong electromagnetic control regulator 18, the first-stage servo drive motor 21, the ultrasonic detection integrated sensor group 25, the second-stage servo drive motor 27, the control drive servo motor 33, the quantum detection sensor and the speed sensor are no longer explained in detail.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline air tightness detection system, characterized in that: It comprises a magnetic field control and adjustment component (1), a pipeline adjustment component (2), a front-end pipeline internal detection component (3) and a flexible adjustment rod (4), wherein the pipeline adjustment component (2) is arranged in multiple sections at the connection ends of the magnetic field control and adjustment component (1) and the front-end pipeline internal detection component (3) to form a modular installation; A flexible electric control magnetic coil is installed inside the flexible adjustment rod (4); The magnetic field control and adjustment component (1) comprises a strong electromagnetic control regulator (18), a connecting clamp (110) and a rear airbag (111); the side end of the flexible adjustment rod (4) and the strong electromagnetic control regulator (18) form an electrical circuit connection; the rear airbag (111) is installed outside the connecting clamp (110); and the magnetic field control and adjustment component (1) is used to form a control magnetic field outside the pipeline when detecting the pipeline; The pipeline regulating component (2) comprises a magnetic particle suspension guiding chamber (28), four groups of guiding chambers (29) and an appropriate amount injection end (290), the side ends of the four groups of guiding chambers (29) are all connected to the appropriate amount injection end (290), and the pipeline regulating component (2) is used to evenly distribute the magnetic particle suspension inside the pipeline when detecting the air tightness of the pipeline, and cooperate with the magnetic field control regulating component (1) and the flexible regulating rod (4) to calculate the area of ​​magnetic field change, thereby accurately locating the leakage point; The front-end pipeline internal detection component (3) is used to automatically adapt and adjust according to the diameter of the pipeline, thereby forming a driving source to drive the pipeline adjustment component (2) to perform a comprehensive detection of the inside of the pipeline using the quantum tunneling effect in cooperation with the quantum detection adjustment seat (36).

2. The pipeline air tightness detection system according to claim 1, characterized in that: A pump (291) is installed inside the magnetic particle suspension guiding chamber (28), and the side end of the pump (291) is connected to an annular guiding chamber (292), and the annular guiding chamber (292) and the four groups of guiding chambers (29) are connected. The side end of the magnetic particle suspension guiding chamber (28) is connected to a recovery chamber (26), and the side end of the recovery chamber (26) is connected to a two-stage servo drive motor (27) via a fixed frame.

3. The pipeline air tightness detection system according to claim 2, characterized in that: The other side end of the magnetic particle suspension guiding chamber (28) is connected to an ultrasonic detection integrated sensor group (25), the side end of the ultrasonic detection integrated sensor group (25) is rotatably connected to a first rotating joint (24) via a shaft joint, the first rotating joint (24) is internally rotatably connected to a universal joint component (23), the side end of the universal joint component (23) is rotatably connected to a second rotating joint (22), and the side end of the second rotating joint (22) is connected to a servo drive motor (21).

4. The pipeline air tightness detection system according to claim 3, characterized in that: The side end of the strong electromagnetic control regulator (18) is fastened to a connecting plate (17), and the side end of the connecting plate (17) is rotationally connected to a top frame arm (16) and a force-bearing frame arm (15) through two sets of rotation nodes. The main force-bearing curved rod (13) and an auxiliary force-bearing curved rod (14) are rotationally connected on the surface of the top frame arm (16) through two rotation grooves, and the bottom side end of the auxiliary force-bearing curved rod (14) is rotationally connected to the side end of the force-bearing frame arm (15).

5. The pipeline air tightness detection system according to claim 4, characterized in that: A travel arm (12) is installed outside the main force-bearing curved rod (13) and the auxiliary force-bearing curved rod (14), and a pneumatic cylinder (11) is installed on the side end of the travel arm (12). The output end of the pneumatic cylinder (11) connects the bottom connection points of the main force-bearing curved rod (13) and the auxiliary force-bearing curved rod (14) through an output rod to form a connection arrangement. The side end of the output rod is connected to a flexible hollow telescopic rod (19), and the side end of the flexible hollow telescopic rod (19) is fastened to the side of the connecting clamp (110).

6. The pipeline air tightness detection system according to claim 5, characterized in that: The front-end pipeline internal detection component (3) comprises a front-end airbag (31), a micro air pump (32) is installed at the side end of the front-end airbag (31), a control drive servo motor (33) is installed inside the surface of the side wall connecting piece of the front-end airbag (31), a guide stabilizing sliding column frame (35) is installed around the surface of the side wall connecting piece of the front-end airbag (31), the quantum detection adjustment seat (36) is located outside the guide stabilizing sliding column frame (35) to form a sliding connection, and the quantum detection adjustment seat (36) is composed of a quantum detection sensor and a sliding adjustment seat.

7. The pipeline air tightness detection system according to claim 6, characterized in that: The output end of the control drive servo motor (33) is connected to a first gear (391), the side end of the first gear (391) is meshingly connected to a second gear (392), the center end of the second gear (392) is connected to a threaded screw (34), the threaded screw (34) is installed inside the guide stabilizing slide column frame (35), and the quantum detection adjustment seat (36) is synchronously located outside the threaded screw (34) to form a sliding connection.

8. The pipeline air tightness detection system according to claim 7, characterized in that: The outer circumference of the quantum detection adjustment seat (36) is equally connected to three groups of crank arm force rods (37) for rotation, and the side ends of the three groups of crank arm force rods (37) are all connected to contact adjustment rods (38) for rotation. An output control motor (390) is installed on the front end outer wall surface of one group of contact adjustment rods (38), and the output end of the output control motor (390) is connected to a speed shaft (393).

9. The pipeline air tightness detection system according to claim 8, characterized in that: The side end of the speed shaft (393) is connected to a first small bevel gear (394), the side end of the first small bevel gear (394) is meshingly connected to a second small bevel gear (395), a speed sensor is installed on the side of the second small bevel gear (395), and the bottom end of the second small bevel gear (395) passes through the front end mounting groove of the contact adjustment rod (38) and is connected to a contact friction wheel (39).

10. A method applied to a pipeline air tightness detection system, characterized in that: The pipeline air tightness detection system according to claim 9 is used, comprising the following steps: S1. First, the magnetic field control and adjustment component (1) and the front-end pipeline internal detection component (3) are connected and modularly installed through the multi-stage pipeline adjustment component (2), and a flexible electric control magnetic coil is installed in the flexible adjustment rod (4), and the flexible electric control magnetic coil is electrically connected to the strong electromagnetic control regulator (18) in the magnetic field control and adjustment component (1). At the same time, the rear-end airbag (111) is installed on the outside of the connection card (110); S2, the front-end pipeline internal detection component (3) is automatically adapted and adjusted according to the size of the pipeline diameter, and then the quantum detection adjustment seat (36) uses the quantum tunneling effect to start a comprehensive detection of the inside of the pipeline. At the same time, during the detection process, the front-end airbag (31) is inflated or deflated by the micro air pump (32) to adjust the sealing connection state between the front-end pipeline internal detection component (3) and the pipeline, and the rear-end airbag (111) is inflated or deflated, and the sealing connection state of the other end of the pipeline is adjusted synchronously, so that the entire pipeline forms a closed structure; S3. After that, the pipeline adjustment component (2) is started, and the pump (291) starts to work, pumping the magnetic particle suspension from the magnetic particle suspension guide chamber (28) into the annular guide chamber (292), and then evenly injecting the magnetic particle suspension into the pipeline from the appropriate injection end (290) through the four groups of guide chambers (29), so that the magnetic particle suspension is distributed in the entire pipeline. The ultrasonic detection integrated sensor group (25) is driven by a servo drive motor (21) and a universal joint (23) to perform auxiliary detection on the pipeline, and pulls or pushes the flexible adjustment rod (4) to adjust the shape of the pipeline synchronously through an external mechanical arm. The flexible adjustment rod (4) is located outside the pipeline to form an effective magnetic field, and then the magnetic field control and adjustment component (1) starts to work. The strong electromagnetic control regulator (18) generates a control magnetic field and cooperates with the flexible electric control magnetic coil of the flexible adjustment rod (4). When there is a leak in the pipeline, the flow state of the magnetic particle suspension at the leaking location changes, thereby causing the magnetic field to change. By analyzing the magnetic field change area, the leak point is accurately located. In this process, the travel arm (12), the pneumatic cylinder (11) and the flexible hollow telescopic rod (19) are used to adjust the position and state of the magnetic field control and adjustment component (1) to meet the detection requirements of different pipelines. S4. Next, after the detection is completed, the recovery chamber (26) is connected to the magnetic particle suspension delivery chamber (28), and the recovery chamber (26) is used to recover the remaining magnetic particle suspension. Alternatively, after the detection is completed, the used magnetic particle suspension is purified by an external purification device and then injected into the recovery chamber (26) again for subsequent reuse.

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