A method, device, terminal equipment and computer-readable storage medium for monitoring angular displacement of a spigot-and-socket pipe

Abstract

The invention discloses a method, device, terminal equipment and computer-readable storage medium for monitoring the angular displacement of a spigot-and-socket type pipeline. The method comprises: acquiring pipeline parameters of the spigot-and-socket type pipeline and sensing data of the inner wall of the spigot in real time, performing deformation analysis on the inner wall of the spigot of the pipeline to obtain the deformation of the inner wall of the spigot of the pipeline; taking the pipeline cross section of the measuring point corresponding to the maximum deformation as the target pipeline cross section; taking the center of the circle of the target pipeline cross section as the coordinate origin, establishing a coordinate system with the horizontal orthogonal pipeline central axis direction as the positive direction, and determining the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system; adding a semicircle angle to the angle to obtain the relative deflection direction of the pipeline, that is, the angular displacement direction of the pipeline; determining the relative rotation angle of the pipeline, that is, the angular displacement magnitude of the pipeline according to the maximum deformation and the target curve; and sending a risk signal of failure and damage of the spigot-and-socket interface when the angular displacement direction or the angular displacement magnitude exceeds a preset range.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline monitoring, and in particular to a method, device, terminal equipment and computer-readable storage medium for monitoring the angular displacement of a spigot-and-socket type pipeline. Background Art

[0002] With the rapid growth of urbanization in my country, the construction and development of urban infrastructure are also advancing rapidly. Underground pipelines, as a core component of critical lifeline projects such as urban water and gas supply, have seen a significant increase in their installation volume. Socket-and-spigot pipe joints have become a common method for pipe connections due to their ease of installation, superior sealing performance, and wide applicability. However, as the weak link in the piping system, socket-and-spigot joints are particularly prone to failure and are a major cause of pipeline problems.

[0003] Failure of spigot-and-socket pipe joints typically stems from uneven ground settlement and localized soil depletion around the pipe. These factors cause deflection between adjacent pipe sections, leading to contact and compression damage between the socket and spigot, or separation of the sealing rubber ring, resulting in joint failure. Currently, there is a lack of effective monitoring methods for these spigot-and-socket pipe joint failures, making it difficult to detect deflection and separation of adjacent pipe sections in a timely manner, resulting in a significant risk of major accidents and casualties. Summary of the Invention

[0004] Embodiments of the present invention provide a method, apparatus, terminal device, and computer-readable storage medium for monitoring the angular displacement of a spigot-and-bell type pipe, which can effectively monitor the angular displacement direction and magnitude of a spigot-and-bell type pipe interface, thereby helping to improve the reliability and safety of the pipe system.

[0005] An embodiment of the present invention provides a method for monitoring angular displacement of a spigot-and-socket pipe, comprising:

[0006] Real-time acquisition of pipe parameters and sensing data of the inner wall of the socket of the socket-type pipe; the sensing data includes: the test position of the sensing optical fiber and the corresponding strain data;

[0007] According to the pipeline parameters and the sensing data of the inner wall of the socket, the deformation of the inner wall of the pipe socket is analyzed to obtain the deformation amount of the inner wall of the pipe socket;

[0008] Determine the measurement point corresponding to the maximum deformation, and use the pipe cross section containing the measurement point as the target pipe cross section;

[0009] A coordinate system is established with the center of the cross section of the target pipe as the coordinate origin and the horizontal direction perpendicular to the central axis of the pipe as the positive direction. The angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system is determined.

[0010] Add a semicircle angle to the included angle to obtain the relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline;

[0011] According to the maximum deformation and the target curve, the relative rotation angle of the pipeline is determined, and the relative rotation angle is used as the angular displacement of the pipeline; wherein the target curve is used to characterize the relationship between the maximum deformation and the relative rotation angle;

[0012] When the angular displacement direction or angular displacement size exceeds a preset range, a socket joint failure risk signal is issued.

[0013] Furthermore, based on the pipeline parameters and the sensing data of the inner wall of the socket, a deformation analysis is performed on the inner wall of the pipe socket to obtain the deformation amount of the inner wall of the pipe socket, including:

[0014] Based on the pipe parameters, the initial circumference of the pipe socket is calculated using the following formula:

[0015] l0=2πr0;

[0016] According to the strain data of each test point and the initial circumference of the pipe socket, the deformation of each test point is calculated by the following formula:

[0017] Δl=κ·l0;

[0018] The deformation of each test point is taken as the deformation of the inner wall of the pipe socket;

[0019] Among them, κ represents the strain data of the test point, Δl represents the deformation of the test point, r0 represents the initial radius of the pipe socket, and l0 represents the initial circumference of the pipe socket.

[0020] Furthermore, determining the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system includes:

[0021] Connect the test point with the maximum deformation to the center of the circle to obtain a connecting line;

[0022] Calculate the angle between the connecting line and the positive direction of the coordinate system, and use the angle as the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system.

[0023] Furthermore, the relative rotation angle of the pipeline is determined based on the maximum deformation and the target curve, including:

[0024] Match the maximum deformation with the target curve to determine the relative rotation angle corresponding to the maximum deformation in the target curve;

[0025] The relative rotation angle corresponding to the maximum deformation in the target curve is used as the relative rotation angle of the pipeline.

[0026] Furthermore, the target curve is determined by:

[0027] Numerical bending tests of corresponding pipe socket joints were conducted on several groups of pipes to obtain the experimental maximum deformation of the inner wall of the pipe sockets and the corresponding relative rotation angles;

[0028] The target curve is constructed based on the experimental maximum deformation of several groups of pipe socket inner walls and the corresponding relative rotation angles.

[0029] Furthermore, the socket-and-spigot type pipeline angular displacement monitoring method further includes:

[0030] The pipeline parameters, angular displacement direction and angular displacement size are sent to the pipeline morphology visualization module, so that the pipeline morphology visualization module constructs a three-dimensional model of the socket-and-spigot pipeline according to the pipeline parameters, angular displacement direction and angular displacement size, and displays the specific values ​​of the pipeline parameters, angular displacement direction and angular displacement size on the three-dimensional model of the socket-and-spigot pipeline.

[0031] Furthermore, the sensing data also includes: temperature data corresponding to the test position of the sensing optical fiber;

[0032] Based on the pipeline parameters and the sensing data of the inner wall of the socket, the deformation analysis of the inner wall of the pipe socket is performed to obtain the deformation amount of the inner wall of the pipe socket, which also includes:

[0033] Determine the corresponding linear expansion coefficient according to the pipeline material in the pipeline parameters;

[0034] Based on the temperature data of each test point, the initial circumference of the pipe socket and the linear expansion coefficient, the temperature compensation deformation of each test point is calculated using the following formula:

[0035] Δl ′ =α·l0·ΔT;

[0036] The sum of the deformation of each test point and the temperature compensation deformation of the corresponding test point is updated as the deformation of the inner wall of the pipe socket;

[0037] Where, Δl ′ It represents the temperature compensation deformation of the test point, α represents the linear expansion coefficient, and ΔT represents the temperature change of the test point.

[0038] Based on the above method embodiment, the present invention provides a corresponding device embodiment, including: an optical fiber sensing module, a socket-type pipe angular displacement calculation module, and a failure warning module;

[0039] The optical fiber sensing module is used to obtain the pipe parameters of the socket-type pipe and the sensing data of the inner wall of the socket in real time; the sensing data includes: the test position of the sensing optical fiber and the corresponding strain data;

[0040] The socket-and-spigot pipe angular displacement calculation module includes: a deformation analysis unit, a target cross-section determination unit, a coordinate system construction unit, an angular displacement direction determination unit, and an angular displacement magnitude determination unit;

[0041] A deformation analysis unit, configured to perform deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket, and obtain the deformation amount of the inner wall of the pipe socket;

[0042] a target cross-section determination unit, configured to determine a measurement point corresponding to a maximum deformation, and use the pipe cross-section including the measurement point as a target pipe cross-section;

[0043] A coordinate system construction unit is used to establish a coordinate system with the center of the target pipe cross section as the coordinate origin and the horizontal direction perpendicular to the pipe centerline as the positive direction, and to determine the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system;

[0044] An angular displacement direction determination unit is used to add a semicircle angle to the included angle to obtain the relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline;

[0045] An angular displacement determination unit is used to determine the relative rotation angle of the pipeline based on the maximum deformation and the target curve, and use the relative rotation angle as the angular displacement of the pipeline; wherein the target curve is used to represent the relationship between the maximum deformation and the relative rotation angle;

[0046] The failure warning module is used to send out a socket joint failure and damage risk signal when the angular displacement direction or angular displacement size exceeds a preset range.

[0047] Based on the above-mentioned method embodiment, the present invention provides a corresponding terminal device embodiment, including: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the steps of the socket-type pipe angular displacement monitoring method as described in the present invention are implemented.

[0048] Based on the above-mentioned method embodiment, the present invention provides a corresponding computer-readable storage medium embodiment, including: a stored computer program, which controls the device where the computer-readable storage medium is located to execute the steps of the socket-type pipe angular displacement monitoring method as described in the present invention when the computer program is running.

[0049] Compared with the prior art, the beneficial effects of the embodiment of this solution are:

[0050] The present invention obtains the pipe parameters and sensing data of the inner wall of the socket of the socket-type pipe in real time, wherein the sensing data includes the test position of the sensing optical fiber and the corresponding strain data. By laying the optical fiber on the inner wall of the socket, the state data of the socket interface can be sensed with high spatial resolution and high monitoring accuracy without destroying the original structure of the pipe socket interface; then, based on the pipe parameters and the sensing data of the inner wall of the socket, the deformation analysis of the inner wall of the pipe socket is performed to obtain the deformation amount of the inner wall of the pipe socket, thereby evaluating the deformation degree of the pipe interface; then, the measurement point corresponding to the maximum deformation amount is determined, and the pipe cross section containing the measurement point is used as the target pipe cross section, and a coordinate system is established with the center of the target pipe cross section as the coordinate origin and the horizontal direction orthogonal to the central axis of the pipe as the positive direction. And determine the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system; add a semicircle angle to the angle to obtain the relative deflection direction of the pipeline, that is, the angular displacement direction. The position where the pipe spigot is squeezed can be determined through the deformation position where the maximum deformation is located, and the opposite direction is the relative deflection direction of the pipeline; based on the maximum deformation and the target curve used to characterize the relationship between the maximum deformation and the relative rotation angle, it describes the relative rotation angle that may occur in the pipeline under different maximum deformations. According to this curve, the relative rotation angle corresponding to the maximum deformation, that is, the angular displacement size, can be determined; finally, when the angular displacement direction or angular displacement size exceeds the preset range, a socket joint failure and damage risk signal is issued to remind relevant personnel to take timely measures for inspection or replacement.

[0051] In summary, the present invention effectively solves the problem of failure monitoring of socket-type pipe joints by acquiring sensing data in real time, performing deformation analysis, determining the direction and magnitude of angular displacement, and setting up a risk warning mechanism, thereby improving the accuracy and timeliness of monitoring and providing a strong guarantee for the safe and stable operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 1 is a flow chart of a method for monitoring angular displacement of a spigot-and-socket pipe according to an embodiment of the present invention;

[0053] Figure 2 is a schematic diagram of a cross section of a target pipeline provided by an embodiment of the present invention;

[0054] Figure 3 This is a schematic diagram of a socket-type connection of two adjacent pipes in a partially offset state provided by an embodiment of the present invention;

[0055] Figure 4 1 is a schematic structural diagram of a socket-and-spigot type pipe angular displacement monitoring device provided by one embodiment of the present invention;

[0056] Figure 5 This is another structural schematic diagram of a socket-and-spigot type pipe angular displacement monitoring device provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0058] like Figure 1 As shown, an embodiment of the present invention provides a method for monitoring the angular displacement of a spigot-and-socket pipe, the method comprising at least the following steps:

[0059] Step S1: acquiring pipe parameters of the spigot-and-socket pipe and sensing data of the inner wall of the spigot in real time; the sensing data includes: a test position of the sensing optical fiber and corresponding strain data;

[0060] Preferably, the sensing data further includes: temperature data corresponding to the test position of the sensing optical fiber;

[0061] For step S1, sensing data of the inner wall of the socket is obtained through the sensing optical fiber, wherein various sensing optical fibers are adhered to the inner wall of the socket of the socket-and-spigot pipe in a ring shape using epoxy resin. The various sensing optical fibers include strain sensing optical fibers and temperature sensing optical fibers. Therefore, the sensing data includes the test position of the sensing optical fiber, the corresponding strain data, and the corresponding temperature data.

[0062] To demodulate this sensing data, an optical frequency domain reflectometry demodulator (OFDR demodulator) is used to demodulate the sensing data of the inner wall of the socket obtained through the sensing optical fiber. Specifically, the OFDR demodulator sends linear swept light to the sensing optical fiber and receives the Rayleigh scattered signal returned by the optical fiber, namely the backscattered Rayleigh scattered signal. Based on the frequency changes of the scattered signal, it accurately analyzes the change information at different positions on the sensing optical fiber.

[0063] It should be noted that optical frequency domain reflectometry based on Rayleigh backscattering can sense deformation and temperature changes in drainage pipe walls in real time. It has extremely high spatial resolution, reaching up to millimeter-level, and can accurately measure temperature and strain data on the pipe walls. Furthermore, optical fiber offers numerous advantages, such as electromagnetic interference resistance, corrosion resistance, and flexibility, making it well-suited to the complex structure of pipe socket joints.

[0064] Step S2: performing deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket to obtain the deformation amount of the inner wall of the pipe socket;

[0065] In a preferred embodiment, based on the pipeline parameters and the sensing data of the inner wall of the socket, deformation analysis is performed on the inner wall of the pipe socket to obtain the deformation amount of the inner wall of the pipe socket, including:

[0066] According to the pipe material, the initial circumference of the pipe socket is calculated by the following formula:

[0067] l0=2πr0;

[0068] According to the strain data of each test point and the initial circumference of the pipe socket, the deformation of each test point is calculated by the following formula:

[0069] Δl=κ·l0;

[0070] The deformation of each test point is taken as the deformation of the inner wall of the pipe socket;

[0071] Among them, κ represents the strain data of the test point, Δl represents the deformation of the test point, r0 represents the initial radius of the pipe socket, and l0 represents the initial circumference of the pipe socket.

[0072] In step S2, the pipeline parameters acquired in step S1 specifically include the initial pipeline geometry and material information. The initial pipeline geometry describes the geometry of the pipeline in its unstressed state, including parameters such as the initial diameter and length. The material information includes the type and composition of the pipeline material, which is used to subsequently determine the material's linear expansion coefficient. In this example, it is assumed that the initial diameter of the pipeline is 200 mm (i.e., the pipeline radius is 100 mm), the initial diameter of the spigot is 160 mm (i.e., the spigot radius is 80 mm), the length is 10 meters, and the material is carbon steel.

[0073] According to the pipeline parameters, the initial radius r0 of the pipeline socket is determined. The initial circumference l0 of the pipeline socket can be calculated using the circumference calculation formula l0=2πr0.

[0074] When a pipe socket is subjected to internal pressure or external load, the strain on its surface or inside will change. This strain will cause the strain-sensing optical fiber attached to the inner wall of the pipe socket to undergo corresponding slight changes in length or bend. By measuring these changes and converting them into electrical signals for recording, the strain κ at each test point can be obtained.

[0075] Finally, after obtaining the strain κ at each test point, combined with the initial circumference l0 of the pipe socket, the deformation at each test point is calculated using the formula Δl = κ·l0. This strain is converted into deformation, which represents the dimensional change of the pipe socket's inner wall at each test point relative to its initial state. By comparing the deformation at different test points, we can more intuitively understand the deformation of the pipe socket's inner wall.

[0076] It should be noted that direct strain measurement at pipe spigots using strain-sensing optical fibers can be applied to a variety of materials and environments, particularly when the material is unknown or its properties are unclear. Stress measurement, on the other hand, may require additional material information, such as elastic modulus, and therefore may be limited in some cases.

[0077] Furthermore, strain, a key physical quantity describing the degree of material deformation, is not only directly affected by stress but also indirectly by temperature. Under stress, materials undergo elastic or plastic deformation, resulting in strain. However, temperature fluctuations also cause thermal expansion and contraction of the material, which can interfere with strain measurements. Therefore, when analyzing the inner wall of a pipe spigot, to fully account for the influence of temperature, the following compensation measures are implemented to ensure accurate and reliable deformation data.

[0078] Preferably, the method further comprises: performing deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket to obtain the deformation amount of the inner wall of the pipe socket;

[0079] Determine the corresponding linear expansion coefficient according to the pipeline material in the pipeline parameters;

[0080] Based on the temperature data of each test point, the initial circumference of the pipe socket and the linear expansion coefficient, the temperature compensation deformation of each test point is calculated using the following formula:

[0081] Δl ′ =α·l0·ΔT;

[0082] The sum of the deformation of each test point and the temperature compensation deformation of the corresponding test point is updated as the deformation of the inner wall of the pipe socket;

[0083] Where, Δl ′ It represents the temperature compensation deformation of the test point, α represents the linear expansion coefficient, and ΔT represents the temperature change of the test point.

[0084] Specifically, based on the pipe material information, the corresponding linear expansion coefficient α is searched or calculated for subsequent temperature compensation deformation calculations. The linear expansion coefficient indicates that when the pipe temperature changes, the pipe length or size will expand or contract linearly according to a certain ratio.

[0085] When the temperature of the pipeline changes, the temperature sensing optical fiber will sense the temperature change and convert it into an electrical signal for recording. The temperature data of each test point obtained by the temperature sensing optical fiber and the determined linear expansion coefficient α are used to calculate the linear expansion coefficient α through the formula Δl ′ =α·l0·ΔT to calculate the temperature compensation deformation Δl of each test point ′ .

[0086] Finally, in order to take into account the deformation caused by temperature change, the deformation of each test point Δl is compared with the temperature compensation deformation Δl of the corresponding test point. ′ The sum of Δl+Δl ′ , updated to the deformation of the inner wall of the pipe socket. This updated deformation more accurately reflects the actual deformation of the pipe. By compensating for temperature, the accuracy and comprehensiveness of pipe deformation can be improved, providing more reliable data support for pipeline health monitoring and safety assessment.

[0087] Step S3: determining the measurement point corresponding to the maximum deformation, and taking the pipe cross section including the measurement point as the target pipe cross section;

[0088] In step S3, based on the deformation of each test point obtained in step S2, the maximum deformation is found. Based on the measurement point corresponding to the maximum deformation, the pipe cross section at that point is used as the target pipe cross section. In this embodiment, assuming that the location of the maximum deformation is point m of the pipe socket, the pipe cross section at point m is used as the target pipe cross section. Figure 2 The figure shows a schematic diagram of the cross section of the target pipeline. The dotted inner circle indicates the position of the pipeline socket, the dotted outer circle indicates the position of the pipeline, and the center point O indicates the position of the central axis of the pipeline.

[0089] Step S4: establishing a coordinate system with the center of the target pipe cross section as the coordinate origin and the horizontal direction perpendicular to the pipe centerline as the positive direction, and determining the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system;

[0090] In a preferred embodiment, determining the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system includes:

[0091] Connect the test point with the maximum deformation to the center of the circle to obtain a connecting line;

[0092] Calculate the angle between the connecting line and the positive direction of the coordinate system, and use the angle as the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system.

[0093] For step S4, Figure 2 As shown, the center of the cross section of the target pipe, that is, the center point O, is selected as the coordinate origin, and the horizontal direction is perpendicular to the central axis of the pipe, corresponding to Figure 2 The x-axis in the coordinate system is established as the positive direction. After finding the position point m of the maximum deformation through step S3, connect point m with the center point O to obtain the connecting line Then, calculate the connecting lines by geometric methods or trigonometric functions The angle θ between the test point corresponding to the maximum deformation and the positive direction of the coordinate system is calculated.

[0094] It should be noted that the angle θ obtained in step S4 actually reflects the deflection angle of the test point corresponding to the maximum deformation relative to the positive direction of the x-axis.

[0095] Step S5: Add a semicircle angle to the included angle to obtain the relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline;

[0096] For step S5, the relationship between angle θ and the actual deformation of the pipeline is further analyzed. Since the pipeline is squeezed at the maximum deformation, the pipe socket is offset in the direction opposite to the maximum deformation, which means that the actual deflection direction of the pipeline is opposite to the direction indicated by the angle θ. Therefore, in order to accurately describe this deflection, this angle θ is added to the angle π of a semicircle (i.e., 180 degrees) to obtain the relative deflection direction of the pipeline, i.e., (θ+π). This relative deflection direction describes the rotation direction of the pipeline in the horizontal plane and reflects the reverse deflection of the pipe socket to offset the squeezing. Therefore, this relative deflection direction (θ+π) can be used as the angular displacement direction of the pipeline.

[0097] Step S6: Determine the relative rotation angle of the pipeline based on the maximum deformation and the target curve, and use the relative rotation angle as the angular displacement of the pipeline; wherein the target curve is used to characterize the relationship between the maximum deformation and the relative rotation angle;

[0098] In a preferred embodiment, determining the relative rotation angle of the pipeline according to the maximum deformation and the target curve includes:

[0099] Match the maximum deformation with the target curve to determine the relative rotation angle corresponding to the maximum deformation in the target curve;

[0100] The relative rotation angle corresponding to the maximum deformation in the target curve is used as the relative rotation angle of the pipeline.

[0101] For step S6, the maximum deformation l max With the target curve, that is The target curve is used to match the maximum deformation and the relative rotation angle. It is calculated based on experimental data. Each point on the curve represents a specific deformation and its corresponding rotation angle. However, due to the discreteness of the experimental data, the target curve may not be continuous and smooth. Therefore, in practical applications, it is necessary to use interpolation to determine the maximum deformation l max The corresponding relative rotation angle a.

[0102] like Figure 3 (a) is a schematic diagram of the socket-type connection between two adjacent pipes without any offset, as shown in Figure 3 (b) shows the schematic diagram of the socket-type connection between two adjacent pipes under the relative rotation angle a offset in the relative deflection direction (θ+π), as shown in Figure 3 (c) is a schematic diagram of the socket-type connection between two adjacent pipes when the relative rotation angle a is offset in the relative deflection direction -(θ+π).

[0103] Preferably, the target curve is determined by:

[0104] Numerical bending tests of corresponding pipe socket joints were conducted on several groups of pipes to obtain the experimental maximum deformation of the inner wall of the pipe sockets and the corresponding relative rotation angles;

[0105] The target curve is constructed based on the experimental maximum deformation of several groups of pipe socket inner walls and the corresponding relative rotation angles.

[0106] Specifically, in order to accurately evaluate the specific relationship between the maximum deformation and relative rotation angle of the pipe socket joint, an experimental method is used to construct a target curve. First, several groups of representative pipes are selected from actual projects as experimental samples. A gradually increasing external force is applied to each group of pipe samples to simulate the stress conditions that may be encountered in actual projects. At the same time, the experimental maximum deformation of the inner wall of the pipe socket and the corresponding relative rotation angle are recorded in real time. The experimental data is sorted and analyzed, and outliers and data points with large errors are eliminated to ensure the accuracy and reliability of the data. Finally, using professional drawing software or tools, the maximum deformation and corresponding relative rotation angle in the experimental data are plotted to form a target curve. This curve can clearly reflect the changing trend and relationship between the maximum deformation and the relative rotation angle.

[0107] Step S7: When the angular displacement direction or the angular displacement magnitude exceeds a preset range, a socket joint failure risk signal is issued.

[0108] For step S7, a safety preset range corresponding to the angular displacement direction and the angular displacement magnitude is set. When the angular displacement direction or the angular displacement magnitude exceeds the preset range, it usually means that the socket joint may have been subjected to excessive external force or some form of damage, resulting in a change in its performance status.

[0109] Specifically, the angular displacement direction reflects the deformation tendency of the socket joint under load. If the angular displacement direction exceeds the preset safety range, it means that the socket joint is subjected to excessive bending moment or torque in a certain direction, which threatens its structural stability.

[0110] The angular displacement is a direct reflection of the degree of deformation at the socket joint. If the angular displacement exceeds the preset safety threshold, it means that the socket joint has undergone significant deformation and adjacent pipe sections have deflected and separated.

[0111] In either case, a risk signal of failure of the socket joint needs to be issued immediately to alert relevant personnel to take necessary measures to inspect and repair the socket joint to prevent it from further deteriorating and possibly threatening the safe operation of the pipeline system.

[0112] In summary, the present invention timely discovers and handles potential safety hazards by real-time monitoring and evaluating the angular displacement direction and magnitude of the socket joint, thereby ensuring the long-term stable operation of the pipeline system.

[0113] In a preferred embodiment, the method for monitoring angular displacement of a spigot-and-socket pipe further includes:

[0114] The pipeline parameters, angular displacement direction and angular displacement size are sent to the pipeline morphology visualization module, so that the pipeline morphology visualization module constructs a three-dimensional model of the socket-and-spigot pipeline according to the pipeline parameters, angular displacement direction and angular displacement size, and displays the specific values ​​of the pipeline parameters, angular displacement direction and angular displacement size on the three-dimensional model of the socket-and-spigot pipeline.

[0115] Specifically, in the process of monitoring the angular displacement of socket-and-spigot pipes, in order to intuitively understand the actual operating status of the pipeline and possible problems, a pipeline morphology visualization module was introduced. By using advanced computer graphics technology and three-dimensional modeling algorithms, the three-dimensional model of the socket-and-spigot pipe was dynamically constructed and displayed in real time based on the input pipeline parameters and deformation information.

[0116] Pipeline parameters include diameter, wall thickness, material, length, connection method (such as socket-and-spigot), burial depth, etc. These parameters are the basis for building a 3D pipeline model, and they determine the basic shape and physical properties of the pipeline.

[0117] The direction and magnitude of angular displacement reflect the deformation of the pipeline under the influence of force or environmental factors. The direction of angular displacement indicates the direction of rotation along the axis of the pipeline deformation, while the magnitude of angular displacement quantifies the degree of this rotation, providing a detailed understanding of the degree of pipeline deformation.

[0118] At the same time, on the constructed three-dimensional model, the pipeline morphology visualization module will also mark the specific values ​​of the pipeline parameters, angular displacement direction and angular displacement size, so that users can intuitively see the shape and deformation of the pipeline, and understand the extent of these changes through numerical values, thereby more accurately evaluating the operating status of the pipeline.

[0119] like Figure 4As shown, based on the above method embodiment, a corresponding device embodiment is provided;

[0120] An embodiment of the present invention provides a device for monitoring the angular displacement of a spigot-and-socket pipe, comprising: an optical fiber sensing module, a spigot-and-socket pipe angular displacement calculation module, and a failure warning module;

[0121] The optical fiber sensing module is used to obtain the pipe parameters of the socket-type pipe and the sensing data of the inner wall of the socket in real time; the sensing data includes: the test position of the sensing optical fiber and the corresponding strain data;

[0122] The socket-and-spigot pipe angular displacement calculation module includes: a deformation analysis unit, a target cross-section determination unit, a coordinate system construction unit, an angular displacement direction determination unit, and an angular displacement magnitude determination unit;

[0123] A deformation analysis unit, configured to perform deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket, and obtain the deformation amount of the inner wall of the pipe socket;

[0124] a target cross-section determination unit, configured to determine a measurement point corresponding to a maximum deformation, and use the pipe cross-section including the measurement point as a target pipe cross-section;

[0125] A coordinate system construction unit is used to establish a coordinate system with the center of the target pipe cross section as the coordinate origin and the horizontal direction perpendicular to the pipe centerline as the positive direction, and to determine the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system;

[0126] An angular displacement direction determination unit is used to add a semicircle angle to the included angle to obtain the relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline;

[0127] An angular displacement determination unit is used to determine the relative rotation angle of the pipeline based on the maximum deformation and the target curve, and use the relative rotation angle as the angular displacement of the pipeline; wherein the target curve is used to represent the relationship between the maximum deformation and the relative rotation angle;

[0128] The failure warning module is used to send out a socket joint failure and damage risk signal when the angular displacement direction or angular displacement size exceeds a preset range.

[0129] like Figure 5 As shown, another embodiment of the device item is provided;

[0130] In a preferred embodiment, the socket-and-spigot type pipe angular displacement monitoring device further includes: a pipe morphology visualization module;

[0131] The pipeline morphology visualization module is used to construct a three-dimensional model of the socket-and-spigot pipeline based on the pipeline parameters, angular displacement direction and angular displacement size, and display the specific values ​​of the pipeline parameters, angular displacement direction and angular displacement size on the three-dimensional model of the socket-and-spigot pipeline.

[0132] It can be understood that the above-mentioned device embodiment corresponds to the method embodiment of the present invention, and it can implement the socket-type pipe angular displacement monitoring method provided by any of the above-mentioned method embodiments of the present invention.

[0133] It should be noted that the device embodiments described above are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Furthermore, in the drawings of the device embodiments provided by the present invention, the connection relationship between modules indicates that they have a communication connection, which may be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement the present invention without inventive effort.

[0134] Based on the above-mentioned embodiment of the socket-and-spigot pipe angular displacement monitoring method, another embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the socket-and-spigot pipe angular displacement monitoring method of any embodiment of the present invention is implemented.

[0135] For example, in this embodiment, the computer program may be divided into one or more modules, which are stored in the memory and executed by the processor to implement the present invention. The one or more module elements may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal device.

[0136] The terminal device may be a computing device such as a desktop computer, a notebook computer, a PDA, a cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0137] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, connecting various parts of the entire terminal device using various interfaces and lines.

[0138] Based on the above method embodiment, another embodiment is provided: another embodiment of the present invention provides a computer-readable storage medium, including a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the socket-type pipe angular displacement monitoring method described in any one of the above method embodiments of the present invention.

[0139] Wherein, the module / unit integrated into the socket-type pipe angular displacement monitoring device / terminal equipment, if implemented in the form of a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0140] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for monitoring the angular displacement of a spigot-and-socket pipe, characterized in that: include: Real-time acquisition of pipe parameters of socket-and-spigot pipes and sensing data of the inner wall of the spigot; The sensing data includes: a test position of the sensing optical fiber and corresponding strain data; According to the pipeline parameters and the sensing data of the inner wall of the socket, deformation analysis is performed on the inner wall of the pipeline socket to obtain the deformation amount of the inner wall of the pipeline socket; Determine a measurement point corresponding to the maximum deformation, and use the pipe cross section including the measurement point as the target pipe cross section; A coordinate system is established with the center of the cross section of the target pipe as the origin of the coordinates and the horizontal direction perpendicular to the central axis of the pipe as the positive direction, and the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system is determined; Add a semicircle angle to the included angle to obtain a relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline; According to the maximum deformation and the target curve, the relative rotation angle of the pipeline is determined, and the relative rotation angle is used as the angular displacement of the pipeline; wherein the target curve is used to characterize the relationship between the maximum deformation and the relative rotation angle; When the angular displacement direction or the angular displacement magnitude exceeds a preset range, a socket joint failure and damage risk signal is issued.

2. The method for monitoring angular displacement of a spigot-and-socket type pipe according to claim 1, characterized in that: According to the pipeline parameters and the sensing data of the inner wall of the socket, the inner wall of the pipeline socket is subjected to deformation analysis to obtain the deformation amount of the inner wall of the pipeline socket, including: According to the pipeline parameters, the initial circumference of the pipeline socket is calculated by the following formula: l0＝2πr0； According to the strain data of each test point and the initial circumference of the pipe socket, the deformation of each test point is calculated by the following formula: Δl=κ·l0; The deformation of each test point is taken as the deformation of the inner wall of the pipe socket; Among them, κ represents the strain data of the test point, Δl represents the deformation of the test point, r0 represents the initial radius of the pipe socket, and l0 represents the initial circumference of the pipe socket.

3. The method for monitoring angular displacement of a spigot-and-socket pipe according to claim 2, characterized in that: The step of determining the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system includes: Connect the test point where the maximum deformation occurs with the center of the circle to obtain a connecting line; The angle between the connecting line and the positive direction of the coordinate system is calculated, and the angle is used as the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system.

4. The method for monitoring angular displacement of a spigot-and-socket type pipe according to claim 3, characterized in that: According to the maximum deformation and the target curve, determine the relative rotation angle of the pipeline, including: Matching the maximum deformation with the target curve to determine the relative rotation angle corresponding to the maximum deformation in the target curve; The relative rotation angle corresponding to the maximum deformation in the target curve is used as the relative rotation angle of the pipeline.

5. The method for monitoring angular displacement of a spigot-and-socket pipe according to claim 4, characterized in that: The target curve is determined by: Conduct numerical bending tests on corresponding pipe socket joints of several groups of pipes to obtain the experimental maximum deformation of the inner wall of several groups of pipe sockets and the corresponding relative rotation angles; The target curve is constructed according to the experimental maximum deformation of several groups of pipe spigot inner walls and the corresponding relative rotation angles.

6. The method for monitoring angular displacement of a spigot-and-socket type pipe according to claim 5, characterized in that: Also includes: The pipeline parameters, the angular displacement direction and the angular displacement magnitude are sent to the pipeline morphology visualization module, so that the pipeline morphology visualization module constructs a three-dimensional model of the socket-and-spigot pipeline according to the pipeline parameters, the angular displacement direction and the angular displacement magnitude, and displays the specific values ​​of the pipeline parameters, the angular displacement direction and the angular displacement magnitude on the socket-and-spigot pipeline three-dimensional model.

7. The method for monitoring angular displacement of a spigot-and-socket type pipe according to claim 6, characterized in that: The sensing data also includes: temperature data corresponding to the test position of the sensing optical fiber; The method of performing deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket to obtain the deformation amount of the inner wall of the pipe socket also includes: Determine the corresponding linear expansion coefficient according to the pipeline material in the pipeline parameters; According to the temperature data of each test point, the initial circumference of the pipe socket and the linear expansion coefficient, the temperature compensation deformation of each test point is calculated by the following formula: Δl ′ =α·l0·ΔT; The sum of the deformation of each test point and the temperature compensation deformation of the corresponding test point is updated as the deformation of the inner wall of the pipe socket; Among them, Δl ′ It represents the temperature compensation deformation of the test point, α represents the linear expansion coefficient, and ΔT represents the temperature change of the test point.

8. A socket-and-spigot type pipe angular displacement monitoring device, characterized in that: include: Optical fiber sensing module, socket-type pipe angular displacement calculation module and failure warning module; The optical fiber sensing module is used to obtain the pipe parameters of the socket-and-spigot pipe and the sensing data of the inner wall of the spigot in real time; The sensing data includes: a test position of the sensing optical fiber and corresponding strain data; The socket-and-spigot pipe angular displacement calculation module includes: a deformation analysis unit, a target cross-section determination unit, a coordinate system construction unit, an angular displacement direction determination unit, and an angular displacement magnitude determination unit; The deformation analysis unit is used to perform deformation analysis on the inner wall of the pipe socket according to the pipe parameters and the sensing data of the inner wall of the socket, so as to obtain the deformation amount of the inner wall of the pipe socket; The target cross-section determination unit is used to determine the measurement point corresponding to the maximum deformation, and use the pipeline cross-section including the measurement point as the target pipeline cross-section; The coordinate system construction unit is used to establish a coordinate system with the center of the cross section of the target pipeline as the coordinate origin and the horizontal direction orthogonal to the central axis of the pipeline as the positive direction, and determine the angle between the test point corresponding to the maximum deformation and the positive direction of the coordinate system; The angular displacement direction determining unit is used to add a semicircle angle to the included angle to obtain a relative deflection direction of the pipeline, and use the relative deflection direction as the angular displacement direction of the pipeline; The angular displacement determination unit is used to determine the relative rotation angle of the pipeline according to the maximum deformation and the target curve, and use the relative rotation angle as the angular displacement of the pipeline; wherein the target curve is used to characterize the relationship between the maximum deformation and the relative rotation angle; The failure warning module is used to send out a socket joint failure damage risk signal when the angular displacement direction or the angular displacement size exceeds a preset range.

9. A terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the method for monitoring the angular displacement of a spigot-and-bell pipe according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: include: A stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the method for monitoring the angular displacement of a spigot-and-bell pipe as described in any one of claims 1 to 7.

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