Pipeline stress detection method, device and equipment and storage medium

Abstract

The invention relates to the technical field of pipeline detection, in particular to a pipeline stress detection method, device and equipment and a storage medium. Pipeline attributes of a to-be-monitored pipeline are obtained, and pipeline stress, pipeline pressure and actual temperature are measured; on the basis of the pipeline pressure and the pipeline attributes, pressure compensation stress is obtained through calculation through a pressure compensation model; calculating temperature compensation stress corresponding to the actual temperature through a temperature compensation model; and according to the temperature compensation stress, the pressure compensation stress and the measurement pipeline stress, generating an actual pipeline stress, thereby reducing the interference of the temperature and the internal pressure of the pipeline on stress detection, improving the stress detection precision, and avoiding the technical problem of low pipeline stress measurement precision in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and in particular to a pipeline stress detection method, device, equipment and storage medium. Background Art

[0002] During power plant operation, internal pipelines may experience stress deformation due to factors such as high temperature and high pressure, leading to pipeline deviation or leakage. Pipeline deviation or leakage is caused by excessive pipeline stress. Existing pipeline stress measurement devices have low measurement accuracy when measuring pipeline stress, and the measurement effect is poor when dealing with pipelines made of non-metallic materials.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a pipeline stress detection method, device, equipment and storage medium, aiming to solve the technical problem of low pipeline stress measurement accuracy in the prior art.

[0005] To achieve the above object, the present invention provides a pipeline stress detection method, which includes the following steps:

[0006] Obtain pipeline properties of the pipeline to be monitored, and measure pipeline stress, pipeline pressure, and actual temperature;

[0007] Calculating a pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model;

[0008] Calculating the temperature compensation stress corresponding to the actual temperature through a temperature compensation model;

[0009] An actual pipeline stress is generated according to the temperature-compensated stress, the pressure-compensated stress, and the measured pipeline stress.

[0010] Optionally, calculating the temperature compensation stress corresponding to the actual temperature using a temperature compensation model includes:

[0011] Calculating a temperature difference between the actual temperature and the preset factory temperature and a temperature compensation coefficient corresponding to the temperature difference;

[0012] The temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient and the strain compensation coefficient.

[0013] Optionally, before calculating the temperature compensation stress according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, the method further includes:

[0014] Acquiring an initial wavelength of the fiber Bragg grating and a measured wavelength of the fiber Bragg grating in the pipeline region to be monitored;

[0015] determining a strain compensation coefficient according to a wavelength difference between the initial wavelength and the measured wavelength;

[0016] Accordingly, the temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, including:

[0017] The temperature compensation stress is calculated based on the temperature difference, the temperature compensation coefficient, the wavelength difference and the strain compensation coefficient.

[0018] Optionally, the pipeline attributes include at least: pipeline outer diameter, pipeline inner diameter and pipeline wall thickness;

[0019] The calculating the pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model includes:

[0020] Calculating the pipeline axial stress according to the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure and a preset axial stress coefficient;

[0021] Calculating the pipeline circumferential stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset circumferential stress coefficient;

[0022] A pressure compensation stress is generated according to the circumferential stress and the axial stress.

[0023] Optionally, generating the pressure compensation stress according to the circumferential stress and the axial stress includes:

[0024] Obtaining pipeline elastic parameters and Poisson's ratio of the pipeline to be monitored;

[0025] generating adjacent displacements of pipelines according to the outer diameter of the pipeline, the inner diameter of the pipeline, the wall thickness of the pipeline, and the pipeline pressure;

[0026] generating a pipeline shear coefficient according to the pipeline elastic parameter and the Poisson ratio;

[0027] A pressure compensation stress is generated according to the adjacent displacement of the pipeline, the pipeline shear coefficient, the circumferential stress, and the axial stress.

[0028] Optionally, obtaining the pipeline pressure and actual temperature of the pipeline to be monitored includes:

[0029] Obtaining the internal pipeline pressure, external pipeline pressure, internal pipeline temperature, and external pipeline temperature of the pipeline to be monitored;

[0030] Performing mean processing on the internal pipe temperature and the external pipe temperature to obtain an actual temperature;

[0031] The internal pipeline pressure and the external pipeline pressure are averaged to obtain the pipeline pressure.

[0032] In addition, to achieve the above-mentioned purpose, the present invention further provides a pipeline stress detection device, which includes:

[0033] An acquisition module is used to obtain pipeline properties of the pipeline to be monitored, measure pipeline stress, pipeline pressure and actual temperature;

[0034] A pressure compensation module, configured to calculate a pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model;

[0035] A temperature compensation module, configured to calculate the temperature compensation stress corresponding to the actual temperature through a temperature compensation model;

[0036] A generating module is used to generate actual pipeline stress according to the temperature compensation stress, the pressure compensation stress and the measured pipeline stress.

[0037] In addition, to achieve the above-mentioned purpose, the present invention also proposes a pipeline stress detection device, which includes: a memory, a processor, and a pipeline stress detection program stored in the memory and executable on the processor, wherein the pipeline stress detection program is configured to implement the steps of the pipeline stress detection method described above.

[0038] In addition, to achieve the above-mentioned purpose, the present invention further proposes a storage medium, on which a pipeline stress detection program is stored. When the pipeline stress detection program is executed by a processor, the steps of the pipeline stress detection method described above are implemented.

[0039] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the pipeline stress detection method as described above are implemented.

[0040] The present invention obtains pipeline properties of a pipeline to be monitored, measures pipeline stress, pipeline pressure, and actual temperature; calculates pressure-compensated stress based on the pipeline pressure and the pipeline properties using a pressure compensation model; calculates temperature-compensated stress corresponding to the actual temperature using a temperature compensation model; and generates actual pipeline stress based on the temperature-compensated stress, the pressure-compensated stress, and the measured pipeline stress, thereby reducing interference with stress detection caused by temperature and pipeline internal pressure, improving stress detection accuracy, and avoiding the technical problem of low pipeline stress measurement accuracy in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 This is a flow chart of a first embodiment of a pipeline stress detection method according to the present invention;

[0044] Figure 2 This is a flow chart of a second embodiment of a pipeline stress detection method according to the present invention;

[0045] Figure 3 This is another flow chart of the second embodiment of the pipeline stress detection method of the present invention;

[0046] Figure 4 This is a structural block diagram of a first embodiment of a pipeline stress detection device according to the present invention;

[0047] Figure 5 It is a structural diagram of a pipeline stress detection device in a hardware operating environment involved in an embodiment of the present invention.

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0050] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0051] Based on this, the embodiment of the present invention provides a pipeline stress detection method, referring to Figure 1 , Figure 1 This is a flow chart of a first embodiment of a pipeline stress detection method according to the present invention.

[0052] In this embodiment, the pipeline stress detection method includes:

[0053] Step S10: Obtain the pipeline properties of the pipeline to be monitored, and measure the pipeline stress, pipeline pressure, and actual temperature.

[0054] Step S20: Calculating the pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model.

[0055] Step S30: Calculating the temperature compensation stress corresponding to the actual temperature using a temperature compensation model.

[0056] Step S40: generating actual pipeline stress according to the temperature compensation stress, the pressure compensation stress and the measured pipeline stress.

[0057] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device capable of implementing the above functions, a control computer, etc. The following describes this embodiment and the following embodiments using a control computer as an example.

[0058] It should be understood that the pipeline properties include at least attribute information such as the pipeline outer diameter, the pipeline inner diameter, and the pipeline wall thickness. Measuring pipeline stress refers to stress data obtained by directly measuring using a traditional stress measurement device. However, due to the influence of the temperature of the environment in which the pipeline is located or the pressure difference between the inside and outside of the pipeline, the pipeline undergoes slight deformation and the stress changes, resulting in inaccurate pipeline stress obtained by direct measurement. Therefore, in this embodiment, the actual temperature of the area where the pipeline is located and the pressure inside and outside the pipeline can be collected to facilitate subsequent compensation and correction of the measured pipeline stress to obtain accurate pipeline stress.

[0059] Furthermore, the pipeline pressure and actual temperature of the pipeline to be monitored are obtained, including:

[0060] Obtaining the internal pipeline pressure, external pipeline pressure, internal pipeline temperature, and external pipeline temperature of the pipeline to be monitored;

[0061] Performing mean processing on the internal pipe temperature and the external pipe temperature to obtain an actual temperature;

[0062] The internal pipeline pressure and the external pipeline pressure are averaged to obtain the pipeline pressure.

[0063] In the specific implementation, taking into account the possible uneven temperature distribution, and because there may be high-temperature steam inside the pipeline in a thermal power plant, and the pipeline material contains metal and insulation layers, there is a temperature difference between the inside and outside of the pipeline. When determining the actual temperature of the pipeline, the average of the internal and external temperatures can be combined to improve the credibility of the pipeline temperature. Similarly, when determining the pipeline pressure, the average pressure inside and outside the pipeline can also be combined for calculation.

[0064] The pressure compensation model is used to calculate the stress distortion value of the pipeline due to pressure, and the temperature compensation model is used to calculate the stress distortion value of the pipeline due to temperature. In this embodiment, the sum of the temperature compensation stress, the pressure compensation stress, and the measured pipeline stress is calculated and output as the actual pipeline stress, thereby reducing the stress distortion of the pipeline due to environmental factors and improving the reliability of pipeline stress detection.

[0065] This embodiment obtains pipeline properties, measures pipeline stress, pipeline pressure, and actual temperature of the pipeline to be monitored; calculates pressure-compensated stress based on the pipeline pressure and pipeline properties using a pressure compensation model; calculates temperature-compensated stress corresponding to the actual temperature using a temperature compensation model; and generates actual pipeline stress based on the temperature-compensated stress, the pressure-compensated stress, and the measured pipeline stress, thereby reducing interference with stress detection caused by temperature and pipeline internal pressure, improving stress detection accuracy, and avoiding the technical problem of low pipeline stress measurement accuracy in the prior art.

[0066] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 2 Step S30 includes:

[0067] Step S301: Calculating the temperature difference between the actual temperature and the preset factory temperature and the temperature compensation coefficient corresponding to the temperature difference.

[0068] Step S302: Calculating the temperature compensation stress according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient.

[0069] It should be noted that the greater the difference between the actual temperature and the preset factory temperature, the greater the temperature compensation coefficient, thereby adapting to stress detection in harsh environments. The preset factory temperature refers to the optimal measurement temperature of the fiber Bragg grating.

[0070] Furthermore, before calculating the temperature compensation stress according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, the method further includes:

[0071] Acquiring an initial wavelength of the fiber Bragg grating and a measured wavelength of the fiber Bragg grating in the pipeline region to be monitored;

[0072] determining a strain compensation coefficient according to a wavelength difference between the initial wavelength and the measured wavelength;

[0073] Accordingly, the temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, including:

[0074] The temperature compensation stress is calculated based on the temperature difference, the temperature compensation coefficient, the wavelength difference and the strain compensation coefficient.

[0075] In the specific implementation, the calculation formula for calculating the temperature compensation stress is:

[0076]

[0077] Where ε is the temperature compensation stress, λ is the wavelength difference, ΔT is the temperature difference, K T is the temperature compensation coefficient, K g is the strain compensation coefficient.

[0078] Please refer to Figure 3 Step S20 includes:

[0079] Step S201: Calculating the pipeline axial stress according to the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset axial stress coefficient.

[0080] Step S202: Calculating the pipeline circumferential stress according to the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset circumferential stress coefficient.

[0081] Step S203: generating a pressure compensation stress according to the circumferential stress and the axial stress.

[0082] It should be noted that axial stress refers to stress along the pipeline axis. In pipelines, axial stress is usually caused by internal pressure and external loads. Circumferential stress refers to stress along the circumference of the pipeline, also known as hoop stress, and is mainly caused by internal pressure.

[0083] In the specific implementation, the calculation formula of axial stress is:

[0084]

[0085] Where P is the pipeline pressure, D is the inner wall diameter of the pipeline, t is the pipeline wall thickness, and α1 is the preset axial stress coefficient.

[0086] In the specific implementation, the calculation formula of axial stress is:

[0087]

[0088] Wherein, P is the pipeline pressure, D is the inner wall diameter of the pipeline, t is the pipeline wall thickness, α2 is the preset circumferential stress coefficient, and in this embodiment, the preset axial stress coefficient α1 is twice or more than twice the preset circumferential stress coefficient α2.

[0089] Furthermore, generating the pressure compensation stress according to the circumferential stress and the axial stress includes:

[0090] Obtaining pipeline elastic parameters and Poisson's ratio of the pipeline to be monitored;

[0091] generating adjacent displacements of pipelines according to the outer diameter of the pipeline, the inner diameter of the pipeline, the wall thickness of the pipeline, and the pipeline pressure;

[0092] generating a pipeline shear coefficient according to the pipeline elastic parameter and the Poisson ratio;

[0093] A pressure compensation stress is generated according to the adjacent displacement of the pipeline, the pipeline shear coefficient, the circumferential stress, and the axial stress.

[0094] It should be noted that the pipeline is not formed in one piece. The side wall of a pipeline may include structures such as metal pipelines, isolation layers, and thermal insulation layers. Therefore, when the pipeline is deformed, the degree of deformation varies between different materials, and there may be extrusion between layers. In order to improve the calculation accuracy of the pressure compensation stress, this embodiment can first quantitatively evaluate the deformation degree of the pipeline, that is, by calculating the adjacent displacements of the pipeline to evaluate the degree of deformation caused by the shear force.

[0095] Specifically, the calculation formula for calculating the pressure compensation stress is:

[0096]

[0097] in, E is the elastic parameter of the pipeline, μ is the Poisson ratio, and λ is the adjacent displacement of the pipeline.

[0098] This embodiment calculates the temperature difference between the actual temperature and the preset factory temperature and the temperature compensation coefficient corresponding to the temperature difference; calculates the temperature compensation stress based on the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, and calculates the pipeline axial stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset axial stress coefficient; calculates the pipeline circumferential stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset circumferential stress coefficient; and generates the pressure compensation stress based on the circumferential stress and the axial stress, thereby obtaining a pressure compensation stress and a temperature compensation stress with higher accuracy, thereby reducing the stress change in the pipeline caused by temperature or pressure changes.

[0099] This application also provides a pipeline stress detection device, please refer to Figure 4 , the pipeline stress detection device comprises:

[0100] The acquisition module 10 is used to acquire pipeline properties of the pipeline to be monitored, and measure pipeline stress, pipeline pressure and actual temperature.

[0101] The pressure compensation module 20 is configured to calculate the pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model.

[0102] The temperature compensation module 30 is used to calculate the temperature compensation stress corresponding to the actual temperature through a temperature compensation model.

[0103] The generating module 40 is configured to generate the actual pipeline stress according to the temperature compensation stress, the pressure compensation stress and the measured pipeline stress.

[0104] This embodiment obtains pipeline properties, measures pipeline stress, pipeline pressure, and actual temperature of the pipeline to be monitored; calculates pressure-compensated stress based on the pipeline pressure and pipeline properties using a pressure compensation model; calculates temperature-compensated stress corresponding to the actual temperature using a temperature compensation model; and generates actual pipeline stress based on the temperature-compensated stress, the pressure-compensated stress, and the measured pipeline stress, thereby reducing interference with stress detection caused by temperature and pipeline internal pressure, improving stress detection accuracy, and avoiding the technical problem of low pipeline stress measurement accuracy in the prior art.

[0105] In one embodiment, the temperature compensation module 30 is further used to calculate the temperature difference between the actual temperature and the preset factory temperature and the temperature compensation coefficient corresponding to the temperature difference; and calculate the temperature compensation stress based on the temperature difference, the temperature compensation coefficient and the strain compensation coefficient.

[0106] In one embodiment, the temperature compensation module 30 is further used to obtain the initial wavelength of the fiber Bragg grating and the measured wavelength of the fiber Bragg grating in the pipeline area to be monitored; determine the strain compensation coefficient according to the wavelength difference between the initial wavelength and the measured wavelength; accordingly, the temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient and the strain compensation coefficient, including: the temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient, the wavelength difference and the strain compensation coefficient.

[0107] In one embodiment, the pressure compensation module 20 is further used to calculate the pipeline axial stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure and a preset axial stress coefficient; calculate the pipeline circumferential stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure and a preset circumferential stress coefficient; and generate pressure compensation stress based on the circumferential stress and the axial stress.

[0108] In one embodiment, the pressure compensation module 20 is further used to obtain the pipeline elastic parameters and Poisson's ratio of the pipeline to be monitored; generate pipeline adjacent displacement based on the pipeline outer diameter, the pipeline inner diameter, the pipeline wall thickness and the pipeline pressure; generate a pipeline shear coefficient based on the pipeline elastic parameters and the Poisson's ratio; and generate a pressure compensation stress based on the pipeline adjacent displacement, the pipeline shear coefficient, the circumferential stress and the axial stress.

[0109] In one embodiment, the acquisition module 10 is further used to obtain the internal pipeline pressure, external pipeline pressure, internal pipeline temperature and external pipeline temperature of the pipeline to be monitored; perform mean processing on the internal pipeline temperature and the external pipeline temperature to obtain the actual temperature; and perform mean processing on the internal pipeline pressure and the external pipeline pressure to obtain the pipeline pressure.

[0110] The present application provides a pipeline stress detection device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the pipeline stress detection method of the above-mentioned embodiment 1.

[0111] Reference below Figure 5 , which shows a schematic diagram of the structure of a pipeline stress detection device suitable for implementing embodiments of the present application. The pipeline stress detection device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), and in-vehicle terminals (e.g., in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Figure 5 The pipeline stress detection device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0112] like Figure 5As shown, the pipeline stress detection device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for the operation of the pipeline stress detection device. Processing device 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input device 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output device 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage device 1003 including, for example, a magnetic tape, hard disk, etc.; and communication device 1009. Communication device 1009 can allow the pipeline stress detection device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a pipeline stress detection device with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may alternatively be implemented or have.

[0113] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0114] The pipeline stress detection device provided in this application utilizes the pipeline stress detection method described in the aforementioned embodiment to address the technical challenges of pipeline stress detection. Compared to the prior art, the pipeline stress detection device provided in this application achieves the same beneficial effects as the pipeline stress detection method described in the aforementioned embodiment. Other technical features of this pipeline stress detection device are the same as those disclosed in the aforementioned embodiment and are not further elaborated here.

[0115] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0116] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0117] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, a computer program) stored thereon, wherein the computer-readable program instructions are used to execute the pipeline stress detection method in the above-mentioned embodiment.

[0118] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0119] The computer-readable storage medium may be included in the pipeline stress detection device; or may exist independently without being assembled into the pipeline stress detection device.

[0120] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the pipeline stress detection device, the pipeline stress detection device is enabled to: detect pipeline stress.

[0121] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0122] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0123] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0124] The computer-readable storage medium provided in this application stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned pipeline stress detection method, thereby resolving the technical issues surrounding pipeline stress detection. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are similar to those of the pipeline stress detection method provided in the aforementioned embodiments and are not further elaborated here.

[0125] The present application also provides a computer program product, comprising a computer program, which implements the steps of the pipeline stress detection method as described above when executed by a processor.

[0126] The computer program product provided in this application can solve the technical problem of pipeline stress detection. Compared with the existing technology, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the pipeline stress detection method provided in the above embodiment, which will not be repeated here.

[0127] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A pipeline stress detection method, characterized in that: The pipeline stress detection method comprises: Obtain pipeline properties of the pipeline to be monitored, and measure pipeline stress, pipeline pressure, and actual temperature; Calculating a pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model; Calculating the temperature compensation stress corresponding to the actual temperature through a temperature compensation model; An actual pipeline stress is generated according to the temperature-compensated stress, the pressure-compensated stress, and the measured pipeline stress.

2. The pipeline stress detection method according to claim 1, characterized in that: The calculating the temperature compensation stress corresponding to the actual temperature by using a temperature compensation model includes: Calculating a temperature difference between the actual temperature and the preset factory temperature and a temperature compensation coefficient corresponding to the temperature difference; The temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient and the strain compensation coefficient.

3. The pipeline stress detection method according to claim 2, characterized in that: Before calculating the temperature compensation stress according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, the method further includes: Acquiring an initial wavelength of the fiber Bragg grating and a measured wavelength of the fiber Bragg grating in the pipeline region to be monitored; determining a strain compensation coefficient according to a wavelength difference between the initial wavelength and the measured wavelength; Accordingly, the temperature compensation stress is calculated according to the temperature difference, the temperature compensation coefficient, and the strain compensation coefficient, including: The temperature compensation stress is calculated based on the temperature difference, the temperature compensation coefficient, the wavelength difference and the strain compensation coefficient.

4. The pipeline stress detection method according to claim 1, characterized in that: The pipeline attributes include at least: pipeline outer diameter, pipeline inner diameter and pipeline wall thickness; The calculating the pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model includes: Calculating the pipeline axial stress according to the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure and a preset axial stress coefficient; Calculating the pipeline circumferential stress based on the pipeline inner diameter, the pipeline wall thickness, the pipeline pressure, and a preset circumferential stress coefficient; A pressure compensation stress is generated according to the circumferential stress and the axial stress.

5. The pipeline stress detection method according to claim 4, characterized in that: Generating the pressure compensation stress according to the circumferential stress and the axial stress includes: Obtaining pipeline elastic parameters and Poisson's ratio of the pipeline to be monitored; generating adjacent displacements of pipelines according to the outer diameter of the pipeline, the inner diameter of the pipeline, the wall thickness of the pipeline, and the pipeline pressure; generating a pipeline shear coefficient according to the pipeline elastic parameter and the Poisson ratio; A pressure compensation stress is generated according to the adjacent displacement of the pipeline, the pipeline shear coefficient, the circumferential stress, and the axial stress.

6. The pipeline stress detection method according to claim 1, characterized in that: Obtain the pipeline pressure and actual temperature of the pipeline to be monitored, including: Obtaining the internal pipeline pressure, external pipeline pressure, internal pipeline temperature, and external pipeline temperature of the pipeline to be monitored; Performing mean processing on the internal pipe temperature and the external pipe temperature to obtain an actual temperature; The internal pipeline pressure and the external pipeline pressure are averaged to obtain the pipeline pressure.

7. A pipeline stress detection device, characterized in that: The pipeline stress detection device comprises: An acquisition module is used to obtain pipeline properties of the pipeline to be monitored, measure pipeline stress, pipeline pressure and actual temperature; A pressure compensation module, configured to calculate a pressure compensation stress based on the pipeline pressure and the pipeline properties through a pressure compensation model; A temperature compensation module, configured to calculate the temperature compensation stress corresponding to the actual temperature through a temperature compensation model; A generating module is used to generate actual pipeline stress according to the temperature compensation stress, the pressure compensation stress and the measured pipeline stress.

8. A pipeline stress detection device, characterized in that: The pipeline stress detection device includes: a memory, a processor, and a pipeline stress detection program stored in the memory and executable on the processor, wherein the pipeline stress detection program is configured to implement the pipeline stress detection method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores a pipeline stress detection program, which, when executed by a processor, implements the pipeline stress detection method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the pipeline stress detection method according to any one of claims 1 to 6 are implemented.

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