Pipeline leakage determination method, system, device and storage medium

Abstract

The present invention provides a pipeline leakage determination method, system, device and storage medium, which belongs to the field of pipeline monitoring technology. A built-in temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored. The method includes: obtaining a first temperature data set and a second temperature data set; traversing all temperatures in the first temperature data set to determine the temperature deviation between each adjacent temperature measuring point; when the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it is determined that the pipeline system to be monitored is suspected of leaking, and based on the temperature measured by the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber, it is determined whether the pipeline system to be monitored has leaked; when the temperature deviation of the target temperature measuring point is greater than or equal to the second preset threshold, it is determined that the target temperature measuring point is a leaking point, and the pipeline system to be monitored has leaked. The present invention can monitor the pipeline in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline monitoring, and in particular to a pipeline leakage determination method, system, equipment and storage medium. Background Art

[0002] With the continuous development of renewable energy, green electricity to green hydrogen has also been continuously developed. Green electricity to green hydrogen is a technology that uses renewable energy such as solar energy and wind energy to produce green hydrogen. It has the characteristics of zero emissions and low carbon, and is one of the important directions for the development of sustainable energy in the future. The most common way to transport hydrogen is pipeline transportation, but compared with natural gas, hydrogen is more prone to hydrogen embrittlement, causing pipeline leakage and hidden dangers.

[0003] At present, the commonly used pipeline leakage monitoring methods mainly include the detection ball method, the negative pressure wave method and thermal infrared imaging technology. The principle of the detection ball method is to use the detection ball to move with the fluid to collect a large amount of data in the pipeline to analyze and determine whether the pipeline has leaked. The negative pressure wave method is based on the sudden change of the pressure signal and the time difference between the negative pressure wave generated by the leak propagating to the upstream and downstream to achieve leak detection and positioning. The principle of thermal infrared imaging technology is that when the pipeline leaks, the temperature of the surrounding soil will change due to the leakage of the liquid, thereby detecting the leakage of the liquid pipeline.

[0004] However, the detection ball method is also very expensive and is not suitable for large-scale pipeline leakage monitoring. However, since the negative pressure wave method does not have a corresponding noise filtering system, it usually needs to increase the threshold to distinguish whether the pipeline is actually leaking or a false alarm caused by noise. The real-time performance of thermal infrared imaging technology is poor and continuous monitoring cannot be performed. The buried depth of the pipeline seriously affects its detection results. How to monitor pipeline leakage in real time and accurately has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The embodiments of the present invention provide a pipeline leakage determination method, system, device and storage medium to solve the problem that the pipeline cannot be monitored in real time.

[0006] In a first aspect, an embodiment of the present invention provides a pipeline leakage determination method, wherein a built-in temperature measuring optical fiber, a gas collection system, and an external temperature measuring optical fiber are sequentially arranged outside a pipeline system to be monitored, and the leakage determination method includes:

[0007] Acquire a first temperature data set and a second temperature data set; wherein the first temperature data set includes the temperature measured at each temperature measuring point in the built-in temperature measuring optical fiber at the first moment, and the second temperature data set includes the temperature measured at each temperature measuring point in the external temperature measuring optical fiber at the first moment;

[0008] Traverse all temperatures in the first temperature data set to determine the temperature deviation between adjacent temperature measurement points;

[0009] When the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it is determined that the pipeline system to be monitored is suspected of leaking, and based on the temperature measured at the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber, it is determined whether the pipeline system to be monitored is leaking; wherein the target temperature measuring point is any one of the temperature measuring points in the built-in temperature measuring optical fiber;

[0010] When the temperature deviation of the target temperature measurement point is greater than or equal to the second preset threshold, the target temperature measurement point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0011] In a possible implementation, determining whether a leak occurs in the pipeline system to be monitored based on the temperature measured at a temperature measuring point corresponding to a target temperature measuring point in an external temperature measuring optical fiber includes:

[0012] Obtaining the temperature measured at the target temperature measurement point at the second moment; wherein the difference between the first moment and the second moment is a preset time difference;

[0013] Based on the second temperature difference and the first external temperature set, determine whether a leak occurs in the pipeline system to be monitored; wherein the second temperature difference is the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature measured at the target temperature measuring point at the second moment; the first external temperature set includes the temperatures measured at multiple temperature measuring points corresponding to the target temperature measuring point in the external temperature measuring optical fiber.

[0014] In a possible implementation, determining whether a leak occurs in the pipeline system to be monitored based on the second temperature difference and the first peripheral temperature set includes:

[0015] When the second temperature difference is less than a third preset threshold, it is determined that no leakage occurs in the pipeline system to be monitored; wherein the third preset threshold is greater than the first preset threshold and less than the second preset threshold;

[0016] When the second temperature difference is greater than or equal to the second preset threshold, the target temperature measurement point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored;

[0017] When the second temperature difference is greater than or equal to the third preset threshold and less than the second preset threshold, it is determined whether the monitored pipeline system leaks based on the temperature measured at the target temperature measurement point at the first moment and the first external temperature set.

[0018] In a possible implementation, determining whether a leak occurs in the pipeline system to be monitored based on the temperature measured at the target temperature measurement point at the first moment and the first peripheral temperature set includes:

[0019] When the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature of all target peripheral devices is less than a fourth preset threshold, it is determined that no leakage occurs in the pipeline system to be monitored; wherein the target peripheral device temperature is any temperature in the first peripheral device temperature set;

[0020] When the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature of the target peripheral device is greater than or equal to a fourth preset threshold, the target temperature measuring point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0021] In a possible implementation, after determining that the target temperature measurement point is a leakage point, the method further includes:

[0022] Based on the position of the leakage point and the position of the optical fiber at the starting point of the pipeline system to be monitored, the distance between the leakage point and the starting point of the pipeline system to be monitored is determined.

[0023] In a possible implementation, the built-in temperature measuring optical fiber is arranged on the radial direction and axis of the pipeline of the pipeline system to be monitored;

[0024] The distance between the leak point and the starting point of the pipeline system to be monitored is calculated as follows:

[0025] , ;

[0026] like ,but ;

[0027] like ,but ;

[0028] Among them, S zs is the integer part of S, S xs is the decimal part of S, L xl L is the distance between the leak point and the starting point of the pipeline system to be monitored. gq is the length of the built-in temperature measuring optical fiber laid on each axis, D gq is the diameter of the radially laid built-in temperature measurement optical fiber, S i is the distance from the leakage point to the starting point of the optical fiber along the direction of the built-in temperature measuring optical fiber, and S0 is the distance from the starting point of the pipeline system to be monitored to the starting point of the built-in temperature measuring optical fiber along the direction of the built-in temperature measuring optical fiber.

[0029] In a possible implementation, the pipeline system to be monitored, the built-in temperature measuring optical fiber, the gas collection system and the external temperature measuring optical fiber are all laid in the soil, and the external temperature measuring optical fiber is laid on the axis of the gas collection system.

[0030] In a second aspect, an embodiment of the present invention provides a pipeline leakage determination system, including a pipeline system to be monitored, which is uniformly arranged in the soil, a built-in temperature measuring optical fiber, a gas collection system, an external temperature measuring optical fiber, and a pipeline leakage determination device, wherein the built-in temperature measuring optical fiber, the gas collection system, and the external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored, the built-in temperature measuring optical fiber is arranged in the axial direction and radial direction of the pipeline system to be monitored, and the external temperature measuring optical fiber is arranged in the axial direction of the gas collection system;

[0031] The pipeline leakage determination device is used to monitor the pipeline system to be monitored based on any pipeline leakage determination method of the first aspect.

[0032] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the processor implements the steps of the method described in the first aspect or any possible implementation manner of the first aspect.

[0033] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect or any possible implementation method of the first aspect are implemented.

[0034] The embodiment of the present invention provides a pipeline leakage determination method. First, a built-in temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored. By arranging the built-in temperature measuring optical fiber outside the pipeline system to be monitored and arranging the external temperature measuring optical fiber outside the gas collection system, it is possible to more accurately determine whether the pipeline system to be monitored has a leak. After the temperature measuring optical fiber is laid out, first, the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber and the temperature measured at the first moment by each temperature measuring point in the external temperature measuring optical fiber are obtained. After the temperature is obtained, based on the traversal of the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber, the temperature deviation between each adjacent temperature measuring point can be determined. When the temperature deviation is greater than the second preset threshold, it can be directly determined that the pipeline system to be monitored has a leak. However, when the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it can only be determined that the pipeline system to be monitored is suspected of leaking, and it is also necessary to determine whether the pipeline system to be monitored has a leak according to the temperature measured by the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber. By comparing and analyzing the internal temperature and the external temperature, the accuracy of leak detection can be improved, and the pipeline system to be monitored can be monitored in real time, which is not only accurate but also convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 is a layout diagram of monitoring equipment for a pipeline system to be monitored provided by an embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the layout of the built-in temperature measuring optical fiber provided in an embodiment of the present invention;

[0038] Figure 3 It is a schematic diagram of the layout of the external temperature measurement optical fiber provided in an embodiment of the present invention;

[0039] Figure 4 is a flow chart of an implementation of a pipeline leakage determination method provided by an embodiment of the present invention;

[0040] Figure 5 is a schematic structural diagram of a pipeline leakage determination device provided by an embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0044] As introduced in the background technology, hydrogen is more susceptible to hydrogen embrittlement and pipeline leakage than natural gas, and it is more necessary to monitor and determine whether the pipeline is leaking.

[0045] In order to solve the problems in the prior art, an embodiment of the present invention provides a pipeline leakage determination method, system, device and storage medium. The pipeline leakage determination method provided by an embodiment of the present invention is first introduced below.

[0046] In order to better understand the pipeline leakage determination method provided by the present invention, the pipeline system to be monitored and the deployment method of the monitoring equipment in the present invention are first introduced.

[0047] like Figure 1 As shown, a built-in temperature measuring optical fiber 120, a gas collection system 130 and an external temperature measuring optical fiber 140 are sequentially arranged outside the pipeline system 110 to be monitored. The pipeline system 110 to be monitored, the built-in temperature measuring optical fiber 120, the gas collection system 130 and the external temperature measuring optical fiber 140 are all arranged in the soil 100. The built-in temperature measuring optical fiber 120 is located inside the gas collection system 130 and is a unit for detecting temperature. The external temperature measuring optical fiber 140 is arranged outside the gas collection system 130 as a reference measurement unit.

[0048] In some embodiments, Figure 2 As shown, the layout of the built-in temperature measuring optical fiber 120 is to first lay it radially along the pipeline system 110 to be monitored for one circle, then lay it along the axis for a certain distance and then lay it radially along the pipeline system 110 to be monitored for one circle, and in this way, lay the entire pipeline system 110 to be monitored. The built-in temperature measuring optical fiber 120 is designed to be arranged in two directions, radially around the pipeline system 110 to be monitored and axially along the pipeline system 110 to be monitored, to detect the temperature of multiple points in the pipeline in real time, expand the monitoring range and accuracy of the pipeline temperature, and improve the safety warning capability.

[0049] In some embodiments, the gas collection system is made of HDPE, has eye-catching safety warning slogans on the outer surface, and is designed with an airway structure or convex point support on the inner surface.

[0050] In some embodiments, the external temperature measurement optical fiber is arranged on the axis of the gas collection system.

[0051] In this embodiment, if Figure 3 As shown, four external temperature measurement optical fibers can be arranged at positions of 0°, 90°, 180°, and 270°.

[0052] In this example, it is assumed that the pipe length is L gd , the pipe diameter is D gd The internal optical fiber temperature measurement is located in the soil between the pipeline system and the gas collection system, and its radial laying diameter is D gq , the axial laying length of each section is L gq ; The length of the gas collection system is L jq , the diameter of the gas collection system is D jq ; The length of the outer optical fiber is L wq .

[0053] in, .

[0054] See also Figure 4, which shows a flow chart of the implementation of the pipeline leakage determination method provided by an embodiment of the present invention, and is described in detail as follows:

[0055] S410: Acquire a first temperature data set and a second temperature data set.

[0056] Among them, the first temperature data set T ngq_i The temperature in the middle is the temperature measured at each temperature measuring point in the built-in temperature measuring optical fiber at the first moment.

[0057] The second temperature data set T wgq_j The temperature in the middle is the temperature measured at each temperature measuring point in the external temperature measuring optical fiber at the first moment.

[0058] S420: Traverse all temperatures in the first temperature data set to determine the temperature deviation between adjacent temperature measurement points.

[0059] In this embodiment, the first temperature data set T ngq_i Traverse all the temperatures in and find the temperature deviation between adjacent points.

[0060] ;

[0061] Wherein, d is the distance between adjacent temperature measurement points of the built-in temperature measurement optical fiber in the radial direction, and D is the distance between adjacent temperature measurement points of the built-in side temperature measurement optical fiber in the axial direction. ; is the temperature at point i of the built-in temperature measuring optical fiber; is the temperature of the built-in temperature measuring optical fiber at a distance of d centimeters from point i in the radial clockwise direction, is the temperature difference between the two; is the temperature of the built-in temperature measuring optical fiber at a distance of d centimeters from point i in the radial counterclockwise direction, is the temperature difference between the two; is the temperature of the built-in temperature measuring optical fiber at a distance of D centimeters in front of point i, is the temperature difference between the two; is the temperature of the built-in temperature measuring optical fiber at a distance of D centimeters from point i, is the temperature difference between the two.

[0062] S430. When the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it is determined that the pipeline system to be monitored is suspected of leaking, and based on the temperature measured at the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber, it is determined whether the pipeline system to be monitored is leaking.

[0063] In this embodiment, when the temperature deviation of the target temperature measurement point is less than the first preset threshold, it is determined that the pipeline system to be monitored is normal. The target temperature measurement point is any one of the temperature measurement points in the built-in temperature measurement optical fiber.

[0064] For example, the first preset threshold may be 2 , the first preset threshold can be 4 .

[0065] When the temperature deviation of the target temperature measurement point is greater than or equal to the first preset threshold and less than the second preset threshold, it is determined that the pipeline system to be monitored is suspected of leaking, and it is necessary to further determine whether the target temperature measurement point is a leak point.

[0066] The temperatures measured at all target temperature measurement points in all built-in temperature measurement optical fibers are traversed to determine all suspected leakage points.

[0067] In some embodiments, after all suspected leakage points are traversed, it is also necessary to judge the suspected leakage points in the time dimension.

[0068] In this embodiment, the judgment can be made by calculating the difference between the temperature of the suspected leakage point and the temperature a preset minute ago.

[0069] First, the temperature measured at the target temperature measurement point at the second moment can be obtained, wherein the difference between the first moment and the second moment is a preset time difference, and the second moment is a moment before the first moment.

[0070] Then, based on the second temperature difference and the first peripheral temperature set, it is determined whether leakage occurs in the pipeline system to be monitored.

[0071] Second temperature difference The temperature measured at the target temperature measuring point at the first moment The temperature measured at the target temperature point at the second moment The first external temperature set includes the temperatures measured at multiple temperature measurement points corresponding to the target temperature measurement points in the external temperature measurement optical fiber.

[0072] In this embodiment, when the second temperature difference is less than a third preset threshold, it is determined that no leakage occurs in the pipeline system to be monitored, wherein the third preset threshold is greater than the first preset threshold and less than the second preset threshold.

[0073] When the second temperature difference is greater than or equal to the second preset threshold, the target temperature measurement point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0074] When the second temperature difference is greater than or equal to the third preset threshold and less than the second preset threshold, it is determined whether the monitored pipeline system leaks based on the temperature measured at the target temperature measurement point at the first moment and the first external temperature set.

[0075] Specifically, the third preset threshold may be 2.5 .

[0076] A) When When the pipeline system to be monitored is considered normal;

[0077] B) When When the pipeline system to be monitored is detected, it is considered that there is a pipeline leakage.

[0078] C) When When the monitored pipeline system is suspected of leaking, further judgment is required.

[0079] In some embodiments, in order to further determine whether a suspected leakage point has leaked, it is necessary to make further judgment based on the temperature of the first peripheral temperature set tested by the external temperature measuring optical fiber.

[0080] In this embodiment, when the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature of all target peripheral devices is less than the fourth preset threshold, it is determined that the pipeline system to be monitored has no leakage. The target peripheral device temperature is any temperature in the first peripheral device temperature set.

[0081] When the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature of the target peripheral device is greater than or equal to a fourth preset threshold, the target temperature measuring point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0082] Specifically, the temperature of the first external temperature concentration of the temperature measurement point of the external temperature measurement optical fiber corresponding to the target temperature measurement point i can be determined. The temperature measurement points of the external temperature measurement optical fiber corresponding to the target temperature measurement point i are 4 external temperature measurement optical fiber points on the same radial interface as the target temperature measurement point, such as q1, q2, q3 and q4 representing the 4 external temperature measurement optical fiber points on the same radial interface as point i. As long as the difference between the target temperature measurement point and any target external temperature is greater than or equal to the fourth preset threshold, it is determined that the pipeline system to be monitored has a leak.

[0083] Exemplarily, the fourth preset threshold may be 3 .

[0084] S440: When the temperature deviation of the target temperature measurement point is greater than or equal to a second preset threshold, the target temperature measurement point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0085] In some embodiments, after it is determined that a leak occurs in the pipeline system to be monitored, the leak point can also be located.

[0086] In this embodiment, the distance between the leakage point and the starting point of the pipeline system to be monitored can be determined based on the position of the leakage point and the position of the optical fiber at the starting point of the pipeline system to be monitored.

[0087] Specifically, the calculation method of the distance between the leakage point and the starting point of the pipeline system to be monitored is:

[0088] , ;

[0089] like ,but ;

[0090] like ,but ;

[0091] Among them, S zs is the integer part of S, S xs is the decimal part of S, L xl L is the distance between the leak point and the starting point of the pipeline system to be monitored. gq is the length of the built-in temperature measuring optical fiber laid on each axis, D gq is the diameter of the radially laid built-in temperature measurement optical fiber, S i is the distance from the leakage point to the starting point of the optical fiber along the direction of the built-in temperature measuring optical fiber, and S0 is the distance from the starting point of the pipeline system to be monitored to the starting point of the built-in temperature measuring optical fiber along the direction of the built-in temperature measuring optical fiber.

[0092] In addition, after the location of the leak point is determined, the corresponding position of the simulation diagram of the pipeline system to be monitored can be highlighted and an alarm can be issued.

[0093] The method for determining the leakage point provided by the present invention is to first sequentially set a built-in temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber outside the pipeline system to be monitored. By setting the built-in temperature measuring optical fiber outside the pipeline system to be monitored and setting the external temperature measuring optical fiber outside the gas collection system, it is possible to more accurately determine whether the pipeline system to be monitored has a leak. After the temperature measuring optical fiber is laid out, first, the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber and the temperature measured at the first moment by each temperature measuring point in the external temperature measuring optical fiber are obtained. After the temperature is obtained, based on the traversal of the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber, the temperature deviation between each adjacent temperature measuring point can be determined. When the temperature deviation is greater than the second preset threshold, it can be directly determined that the pipeline system to be monitored has a leak. However, when the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it can only be determined that the pipeline system to be monitored is suspected of leaking, and it is also necessary to determine whether the pipeline system to be monitored has a leak according to the temperature measured by the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber. By comparing and analyzing the internal temperature and the external temperature, the accuracy of leak detection can be improved, and the pipeline system to be monitored can be monitored in real time, which is not only accurate but also convenient.

[0094] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0095] Based on the pipeline leakage determination method provided in the above embodiment, the present invention also provides a specific implementation of a pipeline leakage determination device applied to the pipeline leakage determination method. Please refer to the following embodiment.

[0096] As shown in FIG5 , a pipeline leakage determination device 500 is provided. An internal temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored. The leakage determination device includes:

[0097] An acquisition module 510 is used to acquire a first temperature data set and a second temperature data set; wherein the first temperature data set includes the temperature measured at each temperature measuring point in the built-in temperature measuring optical fiber at the first moment, and the second temperature data set includes the temperature measured at each temperature measuring point in the external temperature measuring optical fiber at the first moment;

[0098] A calculation module 520, configured to traverse all temperatures in the first temperature data set to determine the temperature deviation between adjacent temperature measurement points;

[0099] The first determination module 530 is used to determine that the pipeline system to be monitored is suspected of leaking when the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, and determine whether the pipeline system to be monitored is leaking based on the temperature measured by the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber; wherein the target temperature measuring point is any one of the temperature measuring points in the built-in temperature measuring optical fiber;

[0100] The second determination module 540 is used to determine that the target temperature measurement point is a leakage point and that the pipeline system to be monitored has a leakage when the temperature deviation of the target temperature measurement point is greater than or equal to a second preset threshold.

[0101] In a possible implementation, the first determination module 530 is used to obtain the temperature measured at the target temperature measurement point at the second moment; wherein the difference between the first moment and the second moment is a preset time difference;

[0102] Based on the second temperature difference and the first external temperature set, determine whether a leak occurs in the pipeline system to be monitored; wherein the second temperature difference is the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature measured at the target temperature measuring point at the second moment; the first external temperature set includes the temperatures measured at multiple temperature measuring points corresponding to the target temperature measuring point in the external temperature measuring optical fiber.

[0103] In a possible implementation, the first determination module 530 is used to determine that no leakage occurs in the pipeline system to be monitored when the second temperature difference is less than a third preset threshold value; wherein the third preset threshold value is greater than the first preset threshold value and less than the second preset threshold value;

[0104] When the second temperature difference is greater than or equal to the second preset threshold, the target temperature measurement point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored;

[0105] When the second temperature difference is greater than or equal to the third preset threshold and less than the second preset threshold, it is determined whether the monitored pipeline system leaks based on the temperature measured at the target temperature measurement point at the first moment and the first external temperature set.

[0106] In a possible implementation, the first determination module 530 is used to determine that no leakage occurs in the pipeline system to be monitored when the difference between the temperature measured at the target temperature measurement point at the first moment and the temperature of all target peripheral devices is less than a fourth preset threshold; wherein the target peripheral device temperature is any temperature in the first peripheral device temperature set;

[0107] When the difference between the temperature measured at the target temperature measuring point at the first moment and the temperature of the target peripheral device is greater than or equal to a fourth preset threshold, the target temperature measuring point is determined to be a leakage point, and a leakage occurs in the pipeline system to be monitored.

[0108] In a possible implementation, the second determination module 540 is used to determine the distance between the leakage point and the starting point of the pipeline system to be monitored based on the location of the leakage point and the location of the optical fiber at the starting point of the pipeline system to be monitored.

[0109] In a possible implementation, the built-in temperature measuring optical fiber is arranged on the radial direction and axis of the pipeline of the pipeline system to be monitored;

[0110] The distance between the leak point and the starting point of the pipeline system to be monitored is calculated as follows:

[0111] , ;

[0112] like ,but ;

[0113] like ,but ;

[0114] Among them, S zs is the integer part of S, S xs is the decimal part of S, L xl L is the distance between the leak point and the starting point of the pipeline system to be monitored. gq is the length of the built-in temperature measuring optical fiber laid on each axis, Dgq is the diameter of the radially laid built-in temperature measurement optical fiber, S i is the distance from the leakage point to the starting point of the optical fiber along the direction of the built-in temperature measuring optical fiber, and S0 is the distance from the starting point of the pipeline system to be monitored to the starting point of the built-in temperature measuring optical fiber along the direction of the built-in temperature measuring optical fiber.

[0115] In a possible implementation, the pipeline system to be monitored, the built-in temperature measuring optical fiber, the gas collection system and the external temperature measuring optical fiber are all laid in the soil, and the external temperature measuring optical fiber is laid on the axis of the gas collection system.

[0116] In addition, the present invention also provides a pipeline leakage determination system, such as Figure 1 As shown, it includes a pipeline system 110 to be monitored, a built-in temperature measuring optical fiber 120, a gas collection system 130, an external temperature measuring optical fiber 140 and a pipeline leakage determination device, which are uniformly arranged in the soil 100. The built-in temperature measuring optical fiber 120, the gas collection system 130 and the external temperature measuring optical fiber 140 are sequentially arranged outside the pipeline system 110 to be monitored, the built-in temperature measuring optical fiber 120 is arranged in the axial direction and radial direction of the pipeline system 110 to be monitored, and the external temperature measuring optical fiber 140 is arranged in the axial direction of the gas collection system 130. The pipeline leakage determination device is used to monitor the pipeline system to be monitored based on the pipeline leakage determination method.

[0117] The pipeline leakage determination system provided by the present invention first has a built-in temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber arranged in sequence outside the pipeline system to be monitored. By arranging the built-in temperature measuring optical fiber outside the pipeline system to be monitored and arranging the external temperature measuring optical fiber outside the gas collection system, it is possible to more accurately determine whether the pipeline system to be monitored has a leak. After the temperature measuring optical fiber is laid out, first, the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber and the temperature measured at the first moment by each temperature measuring point in the external temperature measuring optical fiber are obtained. After the temperature is obtained, based on the traversal of the temperature measured at the first moment by each temperature measuring point in the built-in temperature measuring optical fiber, the temperature deviation between each adjacent temperature measuring point can be determined. When the temperature deviation is greater than the second preset threshold, it can be directly determined that the pipeline system to be monitored has a leak. However, when the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it can only be determined that the pipeline system to be monitored is suspected of leaking, and it is also necessary to determine whether the pipeline system to be monitored has a leak according to the temperature measured by the temperature measuring point corresponding to the target temperature measuring point in the external temperature measuring optical fiber. By comparing and analyzing the internal temperature and the external temperature, the accuracy of leak detection can be improved, and the pipeline system to be monitored can be monitored in real time, which is not only accurate but also convenient.

[0118] Figure 6 Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 6As shown, the electronic device 6 of this embodiment includes: a processor 60, a memory 61, and a computer program 62 stored in the memory 61 and executable on the processor 60. When the processor 60 executes the computer program 62, the steps in the above-mentioned pipeline leakage determination method embodiments are implemented, for example Figure 4 Alternatively, when the processor 60 executes the computer program 62, the functions of the modules in the above-mentioned device embodiments are realized, for example, Figure 5 Functions of modules 510 to 540 are shown.

[0119] Exemplarily, the computer program 62 may be divided into one or more modules, which are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 62 in the electronic device 6. For example, the computer program 62 may be divided into Figure 5 Modules 510 to 540 are shown.

[0120] The electronic device 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Figure 6 It is only an example of the electronic device 6 and does not constitute a limitation of the electronic device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0121] The processor 60 may be a central processing unit (CPU), or 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. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0122] The memory 61 may be an internal storage unit of the electronic device 6, such as a hard disk or memory of the electronic device 6. The memory 61 may also be an external storage device of the electronic device 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the electronic device 6. The memory 61 is used to store the computer program and other programs and data required by the electronic device. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0123] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0124] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0125] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0126] In the embodiments provided by the present invention, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0128] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0129] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it 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. When the computer program is executed by the processor, the steps of the above-mentioned pipeline leakage determination method embodiments can be implemented. Among them, 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, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0130] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A pipeline leakage determination method, characterized in that: An internal temperature measuring optical fiber, a gas collection system and an external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored. The leakage determination method includes: Acquire a first temperature data set and a second temperature data set; wherein the first temperature data set is the temperature measured at each temperature measuring point in the built-in temperature measuring optical fiber at the first moment, and the second temperature data set is the temperature measured at each temperature measuring point in the external temperature measuring optical fiber at the first moment; Traversing all temperatures in the first temperature data set to determine the temperature deviation between adjacent temperature measurement points; When the temperature deviation of the target temperature measuring point is greater than or equal to the first preset threshold and less than the second preset threshold, it is determined that the pipeline system to be monitored is suspected of leaking, and the temperature measured by the target temperature measuring point at the second moment is obtained; when the second temperature difference is less than the third preset threshold, it is determined that the pipeline system to be monitored is not leaking; when the second temperature difference is greater than or equal to the second preset threshold, it is determined that the target temperature measuring point is a leaking point, and the pipeline system to be monitored is leaking; when the second temperature difference is greater than or equal to the third preset threshold and less than the second preset threshold, then when the difference between the temperature measured by the target temperature measuring point at the first moment and the temperature of all target peripherals is less than the fourth preset threshold, it is determined that the pipeline system to be monitored is not leaking; when the target temperature measuring point is When the difference between the temperature tested at the first moment and the target peripheral temperature is greater than or equal to the fourth preset threshold, it is determined that the target temperature measuring point is a leakage point, and the monitored pipeline system is leaking; wherein the target temperature measuring point is any one of the temperature measuring points in the built-in temperature measuring optical fiber; the second temperature difference is the difference between the temperature tested at the target temperature measuring point at the first moment and the temperature tested at the target temperature measuring point at the second moment; the first peripheral temperature set includes the temperatures tested at multiple temperature measuring points in the external temperature measuring optical fiber corresponding to the target temperature measuring point; the difference between the first moment and the second moment is a preset time difference; the third preset threshold is greater than the first preset threshold and less than the second preset threshold; the target peripheral temperature is any temperature in the first peripheral temperature set; When the temperature deviation of the target temperature measurement point is greater than or equal to a second preset threshold, it is determined that the target temperature measurement point is a leakage point, and the pipeline system to be monitored leaks.

2. The pipeline leakage determination method according to claim 1, characterized in that: After determining that the target temperature measurement point is a leakage point, the method further includes: Based on the position of the leakage point and the position of the optical fiber at the starting point of the pipeline system to be monitored, the distance between the leakage point and the starting point of the pipeline system to be monitored is determined.

3. The pipeline leakage determination method according to claim 2, characterized in that: The built-in temperature measuring optical fiber is arranged on the pipeline radial direction and axis of the pipeline system to be monitored; The distance between the leakage point and the starting point of the pipeline system to be monitored is calculated as follows: ， ； like ,but ; like ,but ; Among them, S zs is the integer part of S, S xs is the decimal part of S, L xl L is the distance between the leakage point and the starting point of the pipeline system to be monitored. gq is the length of the built-in temperature measuring optical fiber laid on each axis, D gq is the diameter of the radially laid built-in temperature measurement optical fiber, S i is the distance from the leakage point to the starting point of the optical fiber along the direction of the built-in temperature measuring optical fiber, and S0 is the distance from the starting point of the pipeline system to be monitored to the starting point of the built-in temperature measuring optical fiber along the direction of the built-in temperature measuring optical fiber.

4. The pipeline leakage determination method according to any one of claims 1 to 3, characterized in that: The pipeline system to be monitored, the built-in temperature measuring optical fiber, the gas collection system and the external temperature measuring optical fiber are all arranged in the soil, and the external temperature measuring optical fiber is arranged on the axis of the gas collection system.

5. A pipeline leakage determination system, characterized in that: It comprises a pipeline system to be monitored, a built-in temperature measuring optical fiber, a gas collection system, an external temperature measuring optical fiber and a pipeline leakage determination device uniformly arranged in the soil, wherein the built-in temperature measuring optical fiber, the gas collection system and the external temperature measuring optical fiber are sequentially arranged outside the pipeline system to be monitored, the built-in temperature measuring optical fiber is arranged in the axial direction and radial direction of the pipeline system to be monitored, and the external temperature measuring optical fiber is arranged in the axial direction of the gas collection system; The pipeline leakage determination device is used to monitor the pipeline system to be monitored based on the pipeline leakage determination method according to any one of claims 1 to 4.

6. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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