Pressure pipeline stray current detector based on interference prevention

Abstract

The invention relates to a pressure pipeline stray current detector based on interference prevention, which comprises a pressure pipeline and a detection shell sleeving the outer side of the pressure pipeline, a motor is arranged at the top in the detection shell, a mounting sleeve is mounted on an output shaft of the motor, a sliding ring is arranged at the bottom of the mounting sleeve, and a plurality of steel brushes are distributed on the inner wall of the sliding ring. The magnetic induction metal ring can sense stray current changes and transmit the stray current changes to the Hall sensor, the Hall sensor transmits magnetic field change signals to the sensor signal processing module for processing and analysis, and basic functions of the sensor are achieved; according to the invention, a dual detection mode of appearance judgment by the camera and electrical judgment by the Hall sensor is adopted, the problems of corrosion, coating damage and the like on the surface of the pipeline can be intuitively found through appearance judgment, and existence and change of stray current can be accurately detected through electrical judgment; error judgment possibly caused by a single detection method is effectively avoided through combination of the two methods.

Description

Technical Field

[0001] The present invention belongs to the technical field of stray current detection, and particularly relates to a stray current detector for pressure pipelines. Background Art

[0002] During the oil storage and transportation process, oil and gas pressure pipelines are the main transportation channels, and their safe and stable operation is of great significance for ensuring energy supply and maintaining public safety; stray current, that is, the current flowing through the pipeline unexpectedly, may accelerate the damage process of the pipeline due to the electrochemical corrosion of underground metal structures, and even lead to safety accidents such as leakage. Therefore, it is necessary to regularly detect the stray current in buried pipelines.

[0003] Traditional stray current detection methods consume a large amount of labor, require professional personnel to operate on-site for a long time, and the detection process is complex and cumbersome, with high requirements for the skills of operators; in addition, the detection environment is usually relatively harsh, and safety accidents are extremely likely to occur due to careless operation, bringing unnecessary risks to personnel and equipment.

[0004] In order to overcome the defects of the prior art, the patent application number 202020763110.4 discloses a high-precision stray current detection device for buried pipelines. The device ingeniously integrates a variety of components, including the metal pipeline itself, a magnetic induction metal ring, a Hall sensing module, a power supply line, a communication line, a test pile, a test pile maintenance door, a communication module, a power supply module, and a solar panel, etc., to form a highly integrated detection system. Among them, the magnetic induction metal ring, as one of the core components of the detection device, is closely attached to the metal pipeline. It can sense the magnetic field change generated by the stray current flowing through the pipeline and convert this change into an electrical signal. The electrical signal is transmitted and processed through components such as the Hall sensing module, the power supply line, and the communication line in sequence. The Hall sensing module is responsible for amplifying and shaping the electrical signal generated by the magnetic induction metal ring for subsequent processing and analysis.

[0005] However, the above patent still has certain limitations. Since the pipeline is buried deep underground, it is impossible to use visual inspection to assist the detection, and it completely relies on the electrical judgment method. However, the electrical judgment method itself has limited anti-interference ability and is easily interfered by factors such as the underground environment and other electromagnetic signals. Based on this, the present invention designs a stray current detector that can perform dual detection through visual inspection (according to the images captured by the camera) and electrical judgment (according to the magnetic field change signal) to ensure the accuracy of the detection results. Summary of the Invention

[0006] The purpose of the present invention is to provide a stray current detector for pressure pipelines based on anti-interference to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A stray current detector for a pressure pipeline based on anti-interference, comprising a pressure pipeline and a detection housing sleeved outside the pressure pipeline. A motor is provided at the top inside the detection housing, and an installation sleeve is installed on the output shaft of the motor. A sliding ring is provided at the bottom of the installation sleeve, and a plurality of steel brushes are distributed on the inner wall of the sliding ring. A hollow window is provided in the middle of the installation sleeve, and cameras are symmetrically arranged on the left and right inside the hollow window. A Hall sensor is provided at a position between the cameras inside the hollow window. The right side of the sliding ring is connected to a magnetic induction metal ring. The sliding ring and the magnetic induction metal ring are both slidably sleeved outside the pressure pipeline. An integrated detection module is provided on the inner wall of the detection housing.

[0008] Preferably, an antenna interface is installed on the top of the detection housing.

[0009] Preferably, the detection housing is in a closed inverted U shape.

[0010] Preferably, an installation opening is formed on the outer side of the sliding ring, and a hinge member is rotatably provided in the installation opening through an elastic member, and a cleaning member is connected between the hinge members.

[0011] Preferably, a one-way passage is protruded from the bottom inner wall of the detection housing, and the one-way passage cooperates with the cleaning member.

[0012] Preferably, a dust removal pipeline is provided on the rear side of the inner wall of the detection housing through an installation valve, and the dust removal pipeline extends upward out of the detection housing.

[0013] Preferably, a collection area is recessed and opened on the left side of the bottom inner wall of the detection housing, and a suction nozzle is connected to the bottom of the dust removal pipeline, and the suction nozzle is located above the collection area.

[0014] Preferably, the integrated detection module includes:

[0015] A power module for providing stable power for the detector;

[0016] A GPS module, connected to the antenna interface and receiving satellite signals through the antenna, for determining the position of the detector on the ground;

[0017] A communication module for data transmission with the ground control center;

[0018] A motor drive module for controlling the operation of the motor;

[0019] A sensor signal processing module for processing signals from sensors such as Hall sensors and providing data support for subsequent comprehensive analysis;

[0020] A control module for coordinating the work of each module.

[0021] Preferably, the output terminals of the power supply module are respectively connected to the GPS module, the communication module, the motor drive module, the sensor signal processing module, and the control module.

[0022] Preferably, the data output terminals of the GPS module and the sensor signal processing module are connected to the data input terminal of the control module;

[0023] The data output terminal of the control module is connected to the input terminals of the communication module and the motor drive module;

[0024] The signal output terminal of the communication module transmits data to the ground control center through the antenna;

[0025] The output terminal of the motor drive module is signal - connected to the motor.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In the present invention, the magnetic induction metal ring can sense the change of stray current and transmit it to the Hall sensor, and the Hall sensor then transmits the magnetic field change signal to the sensor signal processing module for processing and analysis to realize its basic function;

[0028] The present invention adopts a dual - detection method of appearance judgment by the camera and electrical judgment by the Hall sensor. Appearance judgment can directly discover problems such as corrosion and coating damage on the surface of the pipeline, while electrical judgment can accurately detect the existence and change of stray current. The combination of the two effectively avoids misjudgment that may be caused by a single detection method and can more comprehensively evaluate the condition of the pipeline;

[0029] Furthermore, through the dual - detection method of appearance judgment and electrical judgment, and the processing of signal amplification, filtering, etc. by the sensor signal processing module, the anti - interference ability of the detector is enhanced, enabling it to accurately detect stray current in a complex underground environment, avoiding misjudgment of the safety condition of the pipeline due to interference from external electromagnetic signals and other factors, and improving the safety and reliability of the detection;

[0030] The cameras symmetrically arranged left and right in the hollow window in the middle of the installation sleeve of the present invention can simultaneously shoot the same area from two angles. It can not only cover a wider surface area of the pipeline, but also reduce misjudgment that may be caused by a single perspective by comparing the two captured images, further improving the accuracy of the detection result. At the same time, this design can also provide an image of the pipeline appearance by the other camera when one of the cameras fails, increasing the redundancy and reliability of the data and providing more intuitive visual assistance for subsequent pipeline maintenance and repair;

[0031] Through the control of the integrated detection module, the detector can realize the automated operation of a series of detection operations, from appearance shooting, pipeline cleaning, electrical detection to data transmission. The control module precisely controls the operation of components such as motors, cameras, and sensors according to the preset program and the instructions of the ground control center, without the need for manual on-site operation for a long time;

[0032] In the present invention, the ground control center can accurately determine the position of the detector through the GPS module and remotely control the detector to operate, timely obtain detection data, without the need for staff to go to the site for data collection and analysis, reducing the on-site stay time of personnel and reducing the risk of safety accidents that may be caused by harsh detection environments or improper operations, ensuring the safety of personnel;

[0033] The present invention can timely discharge the cleaned sediment from the detection housing, avoiding the reaction between the sediment and the pressure pipeline material after long-term accumulation, accelerating the corrosion process of the pipeline, thereby improving the safety of the pressure pipeline and extending the service life of the pipeline. Brief Description of the Drawings

[0034] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0035] Figure 2 is a first partial three-dimensional structure schematic diagram of the present invention;

[0036] Figure 3 is a partial cross-sectional view of the present invention;

[0037] Figure 4 is a second partial three-dimensional structure schematic diagram of the present invention;

[0038] Figure 5 is a third partial three-dimensional structure schematic diagram of the present invention;

[0039] Figure 6 is an enlarged view of part a;

[0040] Figure 7 is a fourth partial three-dimensional structure schematic diagram of the present invention;

[0041] Figure 8 is a first circuit design diagram of the integrated detection module in the present invention;

[0042] Figure 9 is a second circuit design diagram of the integrated detection module in the present invention.

[0043] Reference numerals in the figure: 1 - pressure pipeline, 2 - detection housing, 3 - motor, 4 - mounting sleeve, 5 - slip ring, 6 - steel brush, 7 - hollow window, 8 - camera, 9 - Hall sensor, 10 - magnetic induction metal ring, 12 - antenna interface, 13 - mounting port, 14 - hinge, 15 - cleaning member, 16 - one-way path, 17 - collection area, 18 - mounting valve, 19 - dust removal pipeline, 20 - suction nozzle;

[0044] 11 - integrated detection module, 111 - power module, 112 - GPS module, 113 - communication module, 114 - motor drive module, 115 - control module, 116 - sensor signal processing module. Specific implementation mode

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] As Figures 1 to 9 shown, a stray current detector for a pressure pipeline based on anti-interference includes a pressure pipeline 1 and a detection housing 2 sleeved outside the pressure pipeline 1. At the top inside the detection housing 2, there is a motor 3. An output shaft of the motor 3 is provided with a mounting sleeve 4. At the bottom of the mounting sleeve 4, there is a slip ring 5. A plurality of steel brushes 6 are distributed on the inner wall of the slip ring 5. In the middle of the mounting sleeve 4, there is a hollow window 7. Inside the hollow window 7, cameras 8 are symmetrically arranged on the left and right. Inside the hollow window 7, at a position between the cameras 8, there is a Hall sensor 9. The right side of the slip ring 5 is connected to a magnetic induction metal ring 10. The slip ring 5 and the magnetic induction metal ring 10 are both slidably sleeved outside the pressure pipeline 1. An integrated detection module 11 is provided on the inner wall of the detection housing 2; an antenna interface 12 is installed on the top of the detection housing 2; the detection housing 2 is in a closed inverted U shape; on the outer side of the slip ring 5, there is a mounting port 13. Inside the mounting port 13, a hinge 14 is rotatably provided through an elastic member. A cleaning member 15 is connected between the hinges 14; on the bottom inner wall of the detection housing 2, there is a protruding one-way path 16, and the one-way path 16 cooperates with the cleaning member 15; on the rear side of the bottom inner wall of the detection housing 2, a dust removal pipeline 19 is provided through a mounting valve 18, and the dust removal pipeline 19 extends upward out of the detection housing 2; on the bottom left side of the inner wall of the detection housing 2, there is a recessed collection area 17. The bottom of the dust removal pipeline 19 is connected to a suction nozzle 20, and the suction nozzle 20 is located above the collection area 17.

[0048] The integrated detection module 11 includes: a power supply module 111 for providing stable power for the detector; a GPS module 112 connected to the antenna interface 12 and receiving satellite signals through the antenna for determining the position of the detector on the ground; a communication module 113 for data transmission with the ground control center; a motor drive module 114 for controlling the operation of the motor 3; a sensor signal processing module 116 for processing signals from sensors such as the Hall sensor 9 and providing data support for subsequent comprehensive analysis; and a control module 115 for coordinating the work of each module.

[0049] The output terminals of the power supply module 111 are respectively connected to the GPS module 112, the communication module 113, the motor drive module 114, the sensor signal processing module 116, and the control module 115.

[0050] The data output terminals of the GPS module 112 and the sensor signal processing module 116 are connected to the data input terminal of the control module 115; the data output terminal of the control module 115 is connected to the input terminals of the communication module 113 and the motor drive module 114; the signal output terminal of the communication module 113 transmits data to the ground control center through the antenna; the output terminal of the motor drive module 114 is signal-connected to the motor 3.

[0051] In the present invention, the magnetic induction metal ring 10 can sense the change of stray current and transmit it to the Hall sensor 9. The Hall sensor 9 then transmits the magnetic field change signal to the sensor signal processing module 116 for processing and analysis to achieve its basic function. The present invention adopts a dual-detection method of appearance judgment by the camera 8 and electrical judgment by the Hall sensor 9. Appearance judgment can directly detect problems such as corrosion and coating damage on the surface of the pipeline, while electrical judgment can accurately detect the existence and change of stray current. The combination of the two effectively avoids misjudgment that may be caused by a single detection method and can more comprehensively evaluate the condition of the pipeline. Further, through the dual-detection method of appearance judgment and electrical judgment, as well as the processing of signal amplification, filtering, etc. by the sensor signal processing module 116, the anti-interference ability of the detector is enhanced, enabling it to accurately detect stray current in a complex underground environment and avoid misjudging the safety condition of the pipeline due to interference from external electromagnetic signals and other factors, improving the safety and reliability of the detection. In the present invention, the cameras 8 symmetrically arranged on the left and right in the hollow window 7 in the middle of the installation sleeve 4 can simultaneously capture the same area from two angles, which can not only cover a wider surface area of the pipeline but also reduce misjudgment that may be caused by a single perspective by comparing the two captured images, further improving the accuracy of the detection result. At the same time, this design can also provide an image of the pipeline appearance by the other camera 8 when one of the cameras 8 fails, increasing the redundancy and reliability of the data and providing more intuitive visual assistance for subsequent pipeline maintenance and repair. Through the control of the integrated detection module 11, the detector can realize the automated operation of a series of detection operations from appearance shooting, pipeline cleaning, electrical detection to data transmission. The control module 115 accurately controls the operation of components such as the motor 3, the camera 8, and the sensors according to the preset program and the instructions of the ground control center, without the need for manual operation on-site for a long time. In the present invention, the ground control center can accurately determine the position of the detector through the GPS module 112 and remotely control the operation of the detector to obtain the detection data in a timely manner, without the need for staff to go to the site for data collection and analysis, reducing the stay time of personnel on-site and reducing the risk of safety accidents that may be caused by harsh detection environments or improper operations, ensuring the safety of personnel. The present invention can timely discharge the sediment after cleaning from the detection housing 2, avoiding the reaction between the accumulated sediment and the material of the pressure pipeline 1 after a long time, accelerating the corrosion process of the pipeline, thereby improving the safety of the pressure pipeline 1 and extending the service life of the pipeline.

[0052] Embodiment 2

[0053] Such as Figures 1 to 9A kind of stray current detector for pressure pipelines based on anti-interference is shown, which includes a pressure pipeline 1 and a detection housing 2 sleeved outside the pressure pipeline 1. The detection housing 2 is buried underground together with the installation of the pressure pipeline 1 and operates when stray current detection of the pipeline is required. Among them, the detection housing 2 is in a closed inverted U shape, and the lower half is semi-circular to conform to the shape of the pipeline, which can also reduce the resistance when placing the detector and the pipeline during burial. Handles are extended outward on both the left and right sides of the top. Then, when burying the pipeline, the staff can place the pipeline by holding the detection housing 2, realizing the easy handling of the pipeline.

[0054] A motor 3 is installed on the inner top of the detection housing 2. An installation sleeve 4 is installed on the output shaft of the motor 3. A sliding ring 5 is provided at the bottom of the installation sleeve 4, and multiple steel brushes 6 are distributed on the inner wall of the sliding ring 5. It can be understood that the motor 3 is installed on the inner wall top of the detection housing 2, and an installation sleeve 4 is installed on its output shaft. That is, after the motor 3 is driven, it can drive the installation sleeve 4 to move back and forth left and right inside the detection housing 2. When a sliding ring 5 is installed at the inner bottom of the installation sleeve 4 and the sliding ring 5 is sleeved outside the pressure pipeline 1, the motor 3 can drive the sliding ring 5 to move back and forth left and right outside the pressure pipeline 1. Then, when multiple steel brushes 6 are distributed on the inner wall of the sliding ring 5, the steel brushes 6 can move back and forth left and right outside the pressure pipeline 1, and the cleaning of the corrosion products generated outside it can be completed by contacting the pressure pipeline 1. While cooperating with the appearance judgment, it can avoid the interference and influence on the electrical judgment caused by the attachment of corrosion products on the outer side of the pipeline.

[0055] The above-mentioned "appearance judgment" is: by detecting the physical condition of the pipeline surface to judge whether the pressure pipeline 1 has been corroded or damaged in other forms, and then determine whether there is stray current affecting the integrity of the pressure pipeline 1. Furthermore, a hollow window 7 is provided in the middle of the installation sleeve 4, and cameras 8 are symmetrically arranged left and right inside the hollow window 7 for realizing the appearance shooting of the pressure pipeline 1. Their symmetrical arrangement can shoot the same area from two angles at the same time. By comparing the two captured images, the accuracy of the detection result can be improved, and the misjudgment caused by a single perspective can be reduced. At the same time, the symmetrically arranged cameras 8 on the left and right can cover a wider area of the pipeline surface, obtaining the three-dimensional visual information of the pipeline surface to ensure that no possible corrosion or damage area is missed. When one of the cameras 8 fails, the other camera 8 can still provide the image of the pipeline appearance, increasing the redundancy and reliability of the data. Subsequently, it can also provide more intuitive visual assistance for pipeline maintenance and repair.

[0056] Thus, before driving the motor 3, the camera 8 can be started to take a first shot of the surface of the pressure pipeline 1. Then, the camera 8 is driven to move left and right within the detection housing 2 to complete a second shot of the surface of the cleaned pressure pipeline 1. After the image data is transmitted to the ground, the staff can use the images taken by the camera 8 to check the pipeline and observe whether there are coating breakage, peeling or blistering on the outer surface of the pipeline, whether there are corrosion marks on the pipeline surface, such as pitting, erosion or rust spots, and whether there are local discoloration or abnormal deposits on the pipeline surface.

[0057] Embodiment 3

[0058] As Figures 1 to 9 shown, a stray current detector for a pressure pipeline based on anti-interference includes a pressure pipeline 1 and a detection housing 2 sleeved outside the pressure pipeline 1. The detection housing 2 is buried underground together with the installation of the pressure pipeline 1 and operates when stray current detection of the pipeline is required; a Hall sensor 9 is provided at a position between the cameras 8 within the hollow window 7, and a magnetic induction metal ring 10 is connected to the right side of the slip ring 5. The magnetic induction metal ring 10 is physically connected to the Hall sensor 9, and the magnetic induction metal rings 10 are all slidably sleeved outside the pressure pipeline 1.

[0059] It can be understood that when the driving motor 3 drives the camera 8 to move left and right within the detection housing 2 to complete the second shot of the pressure pipeline 1 and realize the external shot of the pressure pipeline 1, the Hall sensor 9 and the magnetic induction metal ring 10 can be selectively started. The multi-condition electrical judgment of the pipeline will make the detection data more accurate. In this embodiment, the Hall sensor 9 and the magnetic induction metal ring 10 are turned on after the shot. At this time, the motor 3 continues to maintain the stroke of driving the slip ring 5 below it to move left and right. The magnetic induction metal ring 10 immediately senses the change of stray current, and the Hall sensor 9 senses the change of the magnetic field collected by the magnetic induction metal ring 10, and completes the electrical judgment by calculating the detection data.

[0060] Embodiment 4

[0061] As Figures 1 to 9A kind of stray current detector for pressure pipelines based on anti-interference is shown, which includes a pressure pipeline 1 and a detection housing 2 sleeved outside the pressure pipeline 1. The detection housing 2 is buried underground together with the installation of the pressure pipeline 1 and operates when stray current detection of the pipeline is required; in Embodiment 1, it is described that "the sliding ring 5 is driven by the motor 3 to move back and forth left and right outside the pressure pipeline 1, and a plurality of steel brushes 6 are distributed on the inner wall of the sliding ring 5, so that the steel brushes 6 move back and forth left and right outside the pressure pipeline 1, and the cleaning of the corrosion products generated outside is completed by contacting the pressure pipeline 1". Among them, the coating damage, peeling or blistering on the pipeline surface, as well as rust, sediment, etc. will be brushed off into the detection housing 2. To avoid the possibility that the internal chemical substances may react with the material of the pressure pipeline 1 and accelerate the corrosion process of the pipeline after the above sediments accumulate for too long, it is necessary to clean the sediments regularly.

[0062] Specifically, an installation opening 13 is provided on the outer side of the sliding ring 5, and a hinge member 14 is rotatably provided in the installation opening 13 through an elastic member. The hinge member 14 drives the connected cleaning member 15 perpendicular to the inner wall of the detection housing 2 through the elastic member and contacts the sediment. The cleaning member 15 is made of PET resin material, and the left side of the hinge member 14 is solid and cannot rotate to the left.

[0063] It can be understood that when the sliding ring 5 moves to the right, the cleaning of the pressure pipeline 1 is realized. At this time, the cleaning member 15 does not need to clean the sediment that has fallen onto the inner wall of the detection housing 2. And after the cleaning member 15 pushes part of the sediment to the right and stops moving to the right, the cleaning member 15 will be located on the left side of the accumulated sediment. Subsequently, when the cleaning member 15 moves to the left again, it will no longer be able to clean the sediment. Therefore, a one-way channel 16 is also convexly provided at the bottom of the inner wall of the detection housing 2, and the height of the one-way channel 16 is slightly higher than the broom hairs of the cleaning member 15. It can be deduced therefrom that the sliding ring 5 is initially located on the left side of the one-way channel 16. At this time, the cleaning member 15 is perpendicular to the inner wall of the detection housing 2 under the influence of gravity and the elastic member. The motor 3 is started to drive the steel brush 6 to move to the right to clean the corrosion products generated outside the pressure pipeline 1. At this time, the cleaning member 15 moves to the right synchronously and contacts the one-way channel 16. Affected by the resistance of the one-way channel 16, the cleaning member 15 is forced to rotate to the right and no longer contacts the inner wall of the detection housing 2, and thus will not contact the sediment either. The hinge member 14 also rotates to drive the elastic member to be compressed. When the steel brush 6 moves to the rightmost end, the cleaning member 15 no longer contacts the one-way channel 16, and the elastic member stretches to drive the hinge member 14 to rotate and reset, driving the cleaning member 15 to maintain a vertical state again. Subsequently, the steel brush 6 starts to move to the left, driving the cleaning member 15 to move to the left. At this time, the elastic member abuts against the cleaning member 15 to maintain a vertical state, completing the leftward cleaning of the sediment in the housing.

[0064] In this way, the cleaning member 15 does not affect the dropping of the sediment when moving to the right, and only cleans the sediment when moving to the left; further, a collection area 17 is recessed at the bottom left of the inner wall of the detection housing 2. When the cleaning member 15 moves to the left, it can sweep all the sediment into the collection area 17 to complete the collection, preventing the sediment from being brought back when the motor 3 drives other components; correspondingly, a dust removal duct 19 is provided on the rear side of the inner wall of the detection housing 2 by installing a valve 18. The bottom of the dust removal duct 19 is connected to a suction nozzle 20. The suction nozzle 20 is located above the collection area 17. After the cleaning member 15 completes the collection of the sediment, the valve can be activated to drive the suction nozzle 20 to suck the sediment into the cleaning member 15 and then discharge it upward through the dust removal duct 19 from the detection housing 2. At the same time, the adsorption situation can be monitored in real time according to the camera 8 until all of it is discharged, and then the valve is closed to seal the dust removal duct 19 to prevent external debris from entering.

[0065] Embodiment 5

[0066] As Figures 1 to 9 A stray current detector for a pressure pipeline based on anti-interference as shown, an antenna interface 12 is installed on the top of the detection housing 2. The antenna interface 12 is used to install antenna equipment. By establishing a data signal connection between the detector and the ground control center through the antenna, the real-time transmission of data and remote control can be ensured, indirectly realizing the remote detection function of stray current and providing data support for subsequent analysis.

[0067] Meanwhile, an integrated detection module 11 for establishing a signal connection with the antenna device is provided on the inner wall of the detection housing 2. The integrated detection module 11 is connected to the antenna device and includes: a power supply module 111 that provides stable and reliable power support for the whole machine to ensure the continuous normal operation of each module. The power supply module 111 can specifically be a storage battery with a solar panel for energy storage, and at the same time, intelligent power management is adopted to ensure continuous operation for 30 days in rainy weather without manual supervision, realizing intelligent power supply; a GPS module 112 that is tightly connected to an external antenna through an antenna interface 12. The GPS module 112 can receive satellite signals in real time, accurately determine the position information of the detector on the ground, and provide an accurate data basis for the ground control center to make a potential detection distribution map; a communication module 113 that is responsible for transmitting the collected data of the detector and the instructions of the ground control center in real time and efficiently; a motor drive module 114 that precisely controls the operation of the motor 3 under the instruction of the control module 115, including starting, stopping, and running direction; a sensor signal processing module 116 that is responsible for processing the signals from the Hall sensor 9 and is used to collect key parameters such as the magnetic field change, temperature, and humidity around the pipeline in real time, providing strong data support for subsequent comprehensive analysis; a control module 115 that is used to precisely control the operation of components such as the motor 3, the camera 8, and the sensor according to the preset program and the instructions of the ground control center, ensuring that the detector can perform detection work according to the established process.

[0068] Among them, the input end of the power supply module 111 is connected to an external power supply, and its output ends are respectively connected to the GPS module 112, the communication module 113, the motor drive module 114, the sensor signal processing module 116, and the control module 115. The power supply module 111 can provide power supplies with different voltage levels and current magnitudes for these modules to meet their respective working requirements. The power supply end of the GPS module 112 is connected to the corresponding output end of the power supply module 111, and its data output end is connected to the data input end of the control module 115. In this way, after the GPS module 112 preliminarily processes the received position information through the control module 115, it is then sent to the ground control center through the communication module 113. The power supply end of the communication module 113 is connected to the power supply module 111, its data input end is connected to the data output end of the control module 115, and is used to receive the data sorted out by the control module 115. The data output end is connected to the data input end of the control module 115, and is used to transmit the instructions of the ground control center to the control module 115. The antenna interface 12 is connected to the communication module 113 and is used to achieve wireless communication. The power supply end of the motor drive module 114 is connected to the power supply module 111, its control signal input end is connected to the control signal output end of the control module 115, and is used to receive the motor 3 control instructions of the control module 115. The output end of the motor drive module 114 is connected to the motor 3, and the sliding ring 5 is driven by controlling the forward and reverse rotation and speed of the motor 3. The power supply end of the sensor signal processing module 116 is connected to the power supply module 111, the signal output end of the Hall sensor 9 is connected to the signal input end of the sensor signal processing module 116, and the processed signal is connected from the output end of the sensor signal processing module 116 to the data input end of the control module 115, so that the control module 115 can obtain the signal and transmit it to the communication module 113. The power supply end of the control module 115 is connected to the power supply module 111, its data input ends are respectively connected to the data output ends of the GPS module 112, the sensor signal processing module 116, and the communication module 113. The control signal output end of the control module 115 is connected to the control signal input end of the motor drive module 114 and is used to control the operation of the motor 3. The data output end is connected to the data input end of the communication module 113 and is used to transmit the sorted out data to the communication module 113 to be sent to the ground control center.

[0069] Specifically, in the anti-interference preparatory matters, the ground control center will first locate the positions of the pressure pipeline 1 to be detected and the detector through GPS, create an accurate potential detection distribution map, and then remotely control the integrated detection module 11 to operate through the antenna; the control module 115 first conducts a self-check to check whether all modules are normally connected. Subsequently, the control module 115 receives the initialization instruction from the ground control center through the communication module 113. The control module 115 receives the instruction and starts the GPS module 112. The GPS module 112 receives satellite signals and determines the position of the designated detector. At the same time, the control module 115 sends the position information of the detector back to the ground control center through the communication module 113.

[0070] According to the instruction from the ground control center, the control module 115 first starts the camera 8 to take a primary photograph of the left and right sides of the pressure pipeline 1. The camera 8 transmits the captured image data to the control module 115. After the control module 115 preliminarily processes the image data, it sends it back to the ground control center through the communication module 113. Subsequently, the control module 115 sends an instruction to the motor drive module 114 to make the motor 3 drive the slip ring 5 to move to the right. The steel brush 6 on the slip ring 5 brushes off corrosion such as rust on the outer side of the pipeline. At this time, the cleaning part 15 moves upward under the influence of the one-way path 16 and does not clean the corrosion that has fallen into the pipeline. When the slip ring 5 moves to the extreme right, the control module 115 sends another instruction to the motor drive module 114 to make the motor 3 reverse to drive the slip ring 5 to move leftward to reset. At this time, the cleaning part 15 swings downward to sweep the corrosion to the left and accumulate it in the collection area 17. During the reset process of the slip ring 5, the control module 115 starts the camera 8 module again to take a secondary photograph of the appearance of the pipeline. The camera 8 transmits the captured image data to the control module 115. The control module 115 sends the image data back to the ground control center through the communication module 113 to complete the appearance judgment and anti-interference preparatory matters.

[0071] Secondly, the control module 115 starts the magnetic induction metal ring 10 and the Hall sensor 9. The magnetic induction metal ring 10 collects the magnetic field changes. The Hall sensor 9 transmits the detected magnetic field change signal to the sensor signal processing module 116. After the sensor signal processing module amplifies, filters and other processes the signal, it transmits the processed signal to the control module 115. The control module 115 sends the processed magnetic field change signal back to the ground control center through the communication module 113.

[0072] Finally, the ground control center conducts double detection through appearance judgment (based on the images taken by the camera 8) and electrical judgment (based on the magnetic field change signal) to ensure the accuracy and reliability of the detection results.

[0073] After the detection is completed, the control module 115 starts the valve to drive the suction nozzle 20 to suck out the corrosive substances in the collection area 17, avoiding the influence of the corrosive substances on the inside of the detector in the later stage and reducing the generation of stray current.

[0074] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including the said element.

[0075] The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A stray current detector for a pressure pipeline based on anti-interference, comprising a pressure pipeline and a detection housing sleeved outside the pressure pipeline, characterized in that, At the top inside the detection housing, there is a motor. An installation sleeve is installed on the output shaft of the motor. At the bottom of the installation sleeve, there is a sliding ring. A plurality of steel brushes are distributed on the inner wall of the sliding ring. In the middle of the installation sleeve, there is a hollow window. Inside the hollow window, cameras are symmetrically arranged on the left and right. Inside the hollow window, at the position between the cameras, there is a Hall sensor. The right side of the sliding ring is connected to a magnetic induction metal ring. The sliding ring and the magnetic induction metal ring are both slidably sleeved on the outside of the pressure pipeline. An integrated detection module is arranged on the inner wall of the detection housing.

2. The stray current detector for pressure pipelines based on anti-interference according to claim 1, characterized in that An antenna interface is installed on the top of the detection housing.

3. The stray current detector for pressure pipelines based on anti-interference according to claim 1, characterized in that, The detection housing is in a closed inverted U shape.

4. The stray current detector for pressure pipelines based on anti-interference according to claim 1, wherein On the outside of the sliding ring, there is an installation opening. Inside the installation opening, a hinge member is rotatably arranged through an elastic member. A cleaning member is connected between the hinge members.

5. The stray current detector for pressure pipelines based on anti-interference according to claim 4, wherein, On the bottom inside the detection housing, a one-way passage protrudes. The one-way passage cooperates with the cleaning member.

6. The stray current detector for pressure pipelines based on anti-interference according to claim 1, wherein, On the rear side of the inner wall of the detection housing, a dust removal pipeline is arranged through an installation valve. The dust removal pipeline extends upward out of the detection housing.

7. The stray current detector for pressure pipelines based on anti-interference according to claim 6, wherein, On the bottom left side of the inner wall of the detection housing, a collection area is recessed. The bottom of the dust removal pipeline is connected to a suction nozzle. The suction nozzle is located above the collection area.

8. The stray current detector for pressure pipelines based on anti-interference according to claim 1, wherein, The integrated detection module includes: A power supply module, which is used to provide stable power for the detector; A GPS module, which is connected to the antenna interface and receives satellite signals through the antenna, and is used to determine the position of the detector on the ground; A communication module, which is used to transmit data with the ground control center; A motor drive module, which is used to control the operation of the motor; A sensor signal processing module, which is used to process signals from sensors such as Hall sensors and provide data support for subsequent comprehensive analysis; A control module, which is used to coordinate the work of each module.

9. A stray current detector for a pressure pipeline based on anti-interference according to claim 8, characterized in that, The output end of the power supply module is respectively connected to the GPS module, the communication module, the motor drive module, the sensor signal processing module and the control module.

10. According to a stray current detector for a pressure pipeline based on anti-interference as claimed in claim 8, wherein: The data output ends of the GPS module and the sensor signal processing module are connected to the data input end of the control module; The data output end of the control module is connected to the input ends of the communication module and the motor drive module; The signal output end of the communication module transmits data to the ground control center through the antenna; The output end of the motor drive module is signal-connected to the motor.

Images