WO2025218243A1 - 一种拖拽式内检测器弯头通过数量的确定方法和装置 - Google Patents

一种拖拽式内检测器弯头通过数量的确定方法和装置

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Publication number
WO2025218243A1
WO2025218243A1 PCT/CN2024/142043 CN2024142043W WO2025218243A1 WO 2025218243 A1 WO2025218243 A1 WO 2025218243A1 CN 2024142043 W CN2024142043 W CN 2024142043W WO 2025218243 A1 WO2025218243 A1 WO 2025218243A1
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WIPO (PCT)
Prior art keywords
detector
experimental
internal
internal detector
pulling rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/142043
Other languages
English (en)
French (fr)
Inventor
唐德志
胡敏
谷坛
赵飞
郭大成
李冰
熊新强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
Original Assignee
Petrochina Co Ltd
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Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Publication of WO2025218243A1 publication Critical patent/WO2025218243A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0033—Force sensors associated with force applying means applying a pulling force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2113/00—Details relating to the application field
    • G06F2113/14—Pipes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces

Definitions

  • the present application belongs to the technical field of pipeline detection, and specifically relates to a method and device for determining the number of elbows passed by a drag-type internal detector.
  • a method and device for determining the number of elbows that a dragged internal detector can pass through are used to solve the problem in the prior art that it is impossible to accurately assess the number of pipeline elbows that a dragged internal detector can pass through, so as to prevent the dragged internal detector from getting stuck.
  • the present application provides a method for determining the number of elbow passes of a drag-type inner detector, comprising the following steps:
  • the number of times the inner detector passes through the elbow is obtained according to the starting force of the inner detector and the maximum tolerable tension of the pulling rope.
  • the method further includes: obtaining a driving coefficient of the inner detector;
  • the number of times the inner detector passes through the elbow is obtained according to the starting force of the inner detector, the maximum tolerable tension of the pulling rope and the driving coefficient of the inner detector.
  • Nr is the number of elbows passed by the internal detector, in pieces;
  • F is the maximum tolerable tension of the pulling rope, in kg;
  • F0 is the starting force of the internal detector, in kg;
  • k1 is the first driving coefficient of the internal detector, k1 is 1-2;
  • k2 is the second driving coefficient of the internal detector, k2 is 0.1-0.3.
  • Nr is the number of elbows passed by the internal detector, in pieces;
  • F is the maximum tolerable tension of the pulling rope, in kg;
  • F0 is the starting force of the internal detector, in kg;
  • k3 is the third driving coefficient of the internal detector, k3 is 0.1-3;
  • k4 is the fourth driving coefficient of the internal detector, k3 is 6-8;
  • k5 is the fifth driving coefficient of the internal detector, k5 is 16-17.
  • the driving coefficient of the inner detector is obtained by the following steps:
  • the internal detector is dragged through N groups of experimental pipes using the pulling rope, and the N groups of pulling forces F i of the pulling rope are recorded; wherein N is greater than or equal to 2;
  • the experimental pipes include a plurality of experimental straight pipes and experimental elbows that are alternately connected to each other, the size of the experimental straight pipes being the same as the size of the straight pipes in the pipe to be tested, and the size of the experimental elbows being the same as the size of the elbows in the pipe to be tested; and the number of experimental straight pipes and experimental elbows in each group of the experimental pipes is one more than the number of experimental straight pipes and experimental elbows in the previous group of the experimental pipes;
  • the driving coefficient of the inner detector is obtained by fitting based on the Kriging model.
  • the fitted driving coefficient of the internal detector includes a first driving coefficient of the internal detector and a second driving coefficient of the internal detector.
  • the fitted driving coefficient of the internal detector includes the third driving coefficient of the internal detector, the fourth driving coefficient of the internal detector and the fifth driving coefficient of the internal detector.
  • the pulling rope is used to drag the inner detector so that the inner detector passes through the pipeline to be tested.
  • the present application provides a device for detecting the number of elbow passes of a drag-type inner detector, which is used in the determination method described in the first aspect, comprising:
  • a first acquisition module is used to obtain the activation force of the inner detector
  • the second acquisition module is used to obtain the maximum tolerable tension of the pulling rope
  • the third acquisition module is used to obtain the number of bends passed by the inner detector according to the starting force of the inner detector and the maximum tolerable tension of the pulling rope.
  • the present application provides an electronic device, comprising: a memory, a processor;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor performs the determination method as described in the first aspect.
  • the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the determination method described in the first aspect.
  • the present application provides a computer program product, comprising a computer program, which implements the determination method described in the first aspect when executed by a processor.
  • the present application provides a method for determining the number of elbows that a towed internal detector can pass through, by obtaining the starting force of the internal detector; obtaining the maximum tolerable tension of the pulling rope; and obtaining the number of elbows that the internal detector can pass through based on the starting force of the internal detector and the maximum tolerable tension of the pulling rope, thereby accurately evaluating the number of pipeline elbows that the towed internal detector can pass through, which is beneficial to preventing the internal detector from getting stuck and improving the safety of pipeline detection.
  • FIG1 is a flow chart of a method for determining the number of elbows passing through a drag-type internal detector provided by the present application
  • FIG2 is a schematic structural diagram of a device for determining the number of elbows passing through a drag-type inner detector provided by the present application
  • FIG3 is a schematic structural diagram of an electronic device provided in this application.
  • FIG1 is a flow chart of a method for determining the number of bends passed by a dragged internal detector provided by the present application. As shown in FIG1 , the method includes the following steps:
  • the starting force of the internal detector can be obtained according to the design data of the internal detector, and the maximum tolerable tension of the pulling rope can be obtained according to the design parameters of the pulling rope.
  • the pulling rope should be made of a material with low density, low hardness, high strength and good wear resistance, which is conducive to the pulling rope to completely and smoothly complete the dragging of the internal detector to perform internal detection on the pipeline.
  • the application does not limit the type of internal detector, which can be a leakage magnetic internal detector and an eddy current internal detector, etc. Any internal detector that can perform internal detection on the pipeline to obtain the main body status of the pipeline to be tested, including information such as damage type, damage location, and broken size, can be used;
  • the starting force of the internal detector is obtained; the maximum tolerable tension of the pulling rope is obtained; and the number of times the internal detector passes through the elbow is obtained based on the starting force of the internal detector and the maximum tolerable tension of the pulling rope.
  • the present application provides a method for determining the number of elbows passed by a towed internal detector, which can obtain the number of elbows passed by the internal detector based on the starting force of the internal detector and the maximum tolerable tension of the pulling rope, thereby accurately evaluating the number of pipeline elbows that the towed internal detector can pass through, which is conducive to preventing the internal detector from getting stuck and improving the safety of pipeline detection.
  • the method further includes: obtaining a driving coefficient of the inner detector;
  • the number of elbow passes of the internal detector is obtained based on the starting force of the internal detector, the maximum tolerable tension of the pulling rope and the driving coefficient of the internal detector.
  • the driving coefficient of the internal detector is related to factors such as the friction between the pulling rope and the pipeline to be tested, the number of elbows in the pipeline to be tested, etc.; according to the starting force of the internal detector, the maximum tolerable tension of the pulling rope and the driving coefficient of the internal detector, the number of elbows passed by the internal detector is obtained, which can further improve the accuracy and safety of the determination method.
  • the number of elbow passes of the inner detector is calculated by formula (1):
  • Nr is the number of elbows passed by the inner detector, in pieces;
  • F is the maximum tolerable tension of the pulling rope, in kg;
  • F0 is the starting force of the inner detector, in kg;
  • k1 is the first driving coefficient of the inner detector, k1 is 1-2;
  • k2 is the second driving coefficient of the inner detector, k2 is 0.1-0.3;
  • Nr is the number of elbows passed by the internal detector, in pieces;
  • F is the maximum tolerable tension of the pulling rope, in kg;
  • F0 is the starting force of the internal detector, in kg;
  • k3 is the third driving coefficient of the internal detector, k3 is 0.1-3;
  • k4 is the fourth driving coefficient of the internal detector, k4 is 6-8;
  • k5 is the fifth driving coefficient of the internal detector, k5 is 16-17.
  • the friction coefficient between the pulling rope and the pipe to be tested can be obtained by data query or instrument measurement, and the friction coefficient between the pulling rope and the pipe to be tested can be reduced by applying butter to the pulling rope.
  • the driving coefficient of the inner detector includes a first driving coefficient and a second driving coefficient.
  • the first driving coefficient k1 of the inner detector is 1-2
  • the second driving coefficient k2 of the inner detector is 0.1-0.3.
  • the driving coefficient of the inner detector can take any value within a given range. In the above range, it can better match the maximum tolerable tension of the pulling rope.
  • the number of passes through the inner detector elbow can be further accurately calculated by formula (1);
  • the driving coefficient of the inner detector includes the third driving coefficient, the fourth driving coefficient and the fifth driving coefficient.
  • the third driving coefficient k3 of the inner detector is 1-3
  • the fourth driving coefficient k4 of the inner detector is 6-8
  • the fifth driving coefficient k5 of the inner detector is 16-17.
  • the driving coefficients of the above-mentioned inner detectors can take any value within a given range. Within the above range, they can better match the maximum tolerable tension of the pulling rope.
  • the number of passes through the elbow of the inner detector can be more accurately calculated by formula (2); the method for determining the number of passes through the elbow of the drag-type inner detector provided in the present application can further improve the accuracy and safety of the determination method by considering the actual situation between the inner detector, the pulling rope and the pipeline to be tested.
  • the driving coefficient of the internal detector is obtained by the following steps:
  • a pulling rope is used to drag the internal detector through N groups of experimental pipes, and the N groups of pulling forces F i of the pulling rope are recorded; where N is greater than or equal to 2;
  • the experimental pipes include a plurality of alternately connected experimental straight pipes and experimental elbows, the dimensions of the experimental straight pipes being the same as the dimensions of the straight pipes in the pipes to be tested, and the dimensions of the experimental elbows being the same as the dimensions of the elbows in the pipes to be tested; and the number of experimental straight pipes and experimental elbows in each group of experimental pipes is one more than the number of experimental straight pipes and experimental elbows in the previous group of experimental pipes;
  • the driving coefficient of the inner detector is obtained by fitting based on the Kriging model.
  • the present application does not limit the source of the experimental pipeline.
  • Any experimental pipeline that includes multiple experimental straight pipes and experimental elbows that are alternately connected to each other, and the size of the experimental straight pipes is the same as the size of the straight pipes in the pipeline to be tested, and the size of the experimental elbows is the same as the size of the elbows in the pipeline to be tested can be used; specifically, the experimental pipeline can be commercially available, or it can be made by purchasing N straight pipes and elbows with the same size as the pipeline to be tested, and welding a section of straight pipe and an elbow alternately in sequence to make an experimental pipeline; optionally, a load with the same starting force as the required starting force of the internal detector can be used to replace the internal detector to obtain the driving coefficient of the internal detector; the pulling force can be obtained by connecting a spring scale for measuring tension to the pulling rope.
  • one end of a pulling rope is connected to an internal detector, and the other end is connected to a spring scale; the pulling rope is used to drag the internal detector through N groups of experimental pipes, and the N groups of pulling forces Fi of the pulling rope are recorded; wherein N is greater than or equal to 2; the experimental pipes include a plurality of experimental straight pipes and experimental elbows that are alternately connected to each other, the size of the experimental straight pipes is the same as the size of the straight pipes in the pipes to be tested, and the size of the experimental elbows is the same as the size of the elbows in the pipes to be tested; and the number of experimental straight pipes and experimental elbows in each group of experimental pipes is one more than the number of experimental straight pipes and experimental elbows in the previous group of experimental pipes.
  • N groups of experimental pipelines include N elbows, and N groups of Ni - Fi data can be obtained through the above experimental steps. Based on the N groups of Ni - Fi data, a more accurate and unique driving coefficient of the internal detector is fitted based on the Kriging model. The above steps are conducive to further refining the driving coefficient of the internal detector and further improving the accuracy of the pipeline determination method.
  • the driving coefficient of the internal detector obtained by fitting includes a first driving coefficient of the internal detector and a second driving coefficient of the internal detector;
  • the fitted driving coefficients of the internal detector include a third driving coefficient of the internal detector, a fourth driving coefficient of the internal detector, and a fifth driving coefficient of the internal detector.
  • the driving coefficient of the internal detector can be further refined, making the determination method more accurate.
  • the pulling rope is used to drag the inner detector so that the inner detector passes through the pipeline to be tested.
  • the internal detector can pass through the entire pipeline to be tested smoothly, the pulling rope will not break, and blockage can be avoided.
  • the pulling rope is used to drag the internal detector to make the internal detector pass through the pipeline to be tested, and the internal inspection of the pipeline to be tested is completed to obtain the main body status of the pipeline to be tested, including damage type, damage location, broken size and other information, which is conducive to timely prevention and control and repair measures for the pipeline to be tested, and improve the inherent safety of oil and gas gathering and transportation pipelines.
  • the present application provides a device for detecting the number of elbow passes of a drag-type inner detector, which is used to perform the determination method of the first aspect, as shown in FIG2 , including:
  • a first acquisition module 21 is used to obtain the activation force of the internal detector
  • a second obtaining module 22 is used to obtain the maximum tolerable tension of the pulling rope
  • the third acquisition module 23 is used to obtain the number of bends passed by the inner detector according to the starting force of the inner detector and the maximum tolerable tension of the pulling rope.
  • the present application provides a device for detecting the number of elbows passing through a drag-type internal detector, which can execute the determination method of the first aspect. Its implementation principle and technical effects are similar and will not be elaborated here.
  • the device for detecting the number of elbow passes of the drag-type inner detector further comprises: a fourth acquisition module for acquiring a driving coefficient of the inner detector;
  • the third acquisition module at this time is used to obtain the number of elbows passed by the internal detector based on the starting force of the internal detector, the maximum tolerable tension of the pulling rope and the driving coefficient of the internal detector.
  • the present application further provides an electronic device 30 , including: a memory 302 , a processor 301 ;
  • Memory 302 stores computer-executable instructions
  • the processor 301 executes the computer-executable instructions stored in the memory, so that the processor performs the determination method of the first aspect.
  • the electronic device provided in this application includes: at least one processor 301 and a memory 302.
  • the electronic device further includes a communication component 303.
  • the processor 301, the memory 302 and the communication component 303 are connected via a bus.
  • At least one processor executes computer-executable instructions stored in a memory, so that the at least one processor performs the above method.
  • the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc.
  • a general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in this application may be directly implemented as being executed by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
  • the memory may include high-speed memory (Random Access Memory, RAM), and may also include non-volatile memory (NVM), such as at least one disk storage.
  • RAM Random Access Memory
  • NVM non-volatile memory
  • a bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus.
  • Buses can be categorized as address buses, data buses, control buses, and the like. For ease of illustration, the buses shown in the drawings of this application are not limited to a single bus or a single type of bus.
  • the present application provides a computer-readable storage medium, in which computer-executable instructions are stored.
  • the computer-executable instructions are executed by a processor, they are used to implement the determination method of the first aspect.
  • the above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • optical disk any available medium that can be accessed by a general-purpose or special-purpose computer.
  • An exemplary readable storage medium is coupled to a processor, such that the processor can read information from and write information to the readable storage medium.
  • the readable storage medium may be an integral part of the processor.
  • the processor and the readable storage medium may reside in an application specific integrated circuit (ASIC).
  • ASIC application specific integrated circuit
  • the processor and the readable storage medium may reside in a device as discrete components.
  • any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.
  • Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.
  • each functional unit in each embodiment of the present application 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 function 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.
  • the computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.
  • the aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments.
  • the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.
  • the present application provides a computer program product, comprising a computer program, which implements the determination method of the first aspect when executed by a processor.
  • the pipeline under test is a water-infused pipe with an outer diameter of 114mm and a wall thickness of 8mm. There are 12 1.5D elbows along the pipeline.
  • the pipeline operates at a low pressure of only 0.1MPa, necessitating a magnetic flux leakage internal inspection to assess the condition of the pipeline itself.
  • Conventional magnetic flux leakage internal inspections driven by a cup pressure differential require a high driving pressure differential, which the pipeline under test cannot withstand and are therefore unusable. Therefore, the determination method provided in this application is employed, comprising the following steps:
  • One end of a pulling rope was connected to an internal detector, and the other end was connected to a spring scale.
  • a 1 kg load was dragged through five groups of experimental pipes using the pulling rope, and five groups of pulling forces Fi of the pulling rope were recorded using a spring scale that measured the tension.
  • the first group of experimental pipes included four alternating straight pipes and elbows, and the number of straight pipes and elbows in each group of experimental pipes was one more than that in the previous group.
  • the outer diameter of the straight pipe was 114 mm, the wall thickness was 8 mm, and the size of the elbow was 1.5D.
  • Five groups of Ni - Fi data were obtained, as shown in Table 1.
  • the first driving coefficient k 1 of the inner detector is fitted to be 1.1398, and the second driving coefficient k 2 is 0.1031;
  • Nr is the number of elbows passed by the inner detector, in pieces;
  • F is the maximum tensile force that the pulling rope can withstand, in kg;
  • F0 is the starting force of the inner detector, in kg;
  • k1 is the first driving coefficient of the inner detector, k1 is 1.1398;
  • k2 is the second driving coefficient of the inner detector, k2 is 0.1031.
  • the internal detector can pass through 15 elbows.
  • the pulling rope is used to drag the internal detector so that the internal detector passes through the pipeline to be tested, completing the internal detection of the pipeline.
  • the pipeline under test is a water-infused pipe with an outer diameter of 114mm and a wall thickness of 8mm. There are 12 1.5D elbows along the pipeline.
  • the pipeline operates at a low pressure of only 0.1MPa, necessitating a magnetic flux leakage internal inspection to assess the condition of the pipeline itself.
  • Conventional magnetic flux leakage internal inspections driven by a cup pressure differential require a high driving pressure differential, which the pipeline under test cannot withstand and are therefore unusable. Therefore, the determination method provided in this application is employed, comprising the following steps:
  • the friction coefficient between the pulling rope and the experimental pipe was measured to be 0.32;
  • One end of a pulling rope was connected to an internal detector, and the other end was connected to a spring scale.
  • a 1 kg load was dragged through five groups of experimental pipes using the pulling rope, and five groups of pulling forces Fi of the pulling rope were recorded using a spring scale that measured the tension.
  • the first group of experimental pipes included four alternating straight pipes and elbows, and the number of straight pipes and elbows in each group of experimental pipes was one more than that in the previous group.
  • the outer diameter of the straight pipe was 114 mm, the wall thickness was 8 mm, and the size of the elbow was 1.5D.
  • Five groups of Ni - Fi data were obtained, as shown in Table 2.
  • the third driving coefficient k3 of the inner detector is fitted to be 0.907
  • the fourth driving coefficient k4 is 6.7557
  • the fifth driving coefficient k5 is 16.0628.
  • Nr is the number of elbows passed by the internal detector, in pieces;
  • F is the maximum tolerable tension of the pulling rope, in kg;
  • F0 is the starting force of the internal detector, in kg;
  • k3 is the third driving coefficient of the internal detector, k3 is 0.907;
  • k4 is the fourth driving coefficient of the internal detector, k4 is 6.7557;
  • k5 is the fifth driving coefficient of the internal detector, k5 is 16.0628.
  • the internal detector can only pass through 8 elbows.

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Abstract

本申请提供一种拖拽式内检测器弯头通过数量的确定方法和装置，包括以下步骤：获取内检测器的启动力；获取牵拉绳的最大可承受拉力；根据所述内检测器的所述启动力和所述牵拉绳的所述最大可承受拉力，获取所述内检测器弯头通过数量；从而准确评估拖拽式内检测器可以通过的管道弯头数量，有利于防止内检测器发生卡堵现象，提高管道内检测的安全性。

Description

一种拖拽式内检测器弯头通过数量的确定方法和装置
本申请要求于2024年04月17日提交中国专利局、申请号为202410465674.2、申请名称为“一种拖拽式内检测器弯头通过数量的确定方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于管道检测技术领域，具体涉及一种拖拽式内检测器弯头通过数量的确定方法和装置。
背景技术
随着油气勘探开发力度的不断加大，建成了庞大的油气集输管网；与长输管道不同，油气集输管网输送介质复杂，含H2S、CO2、O2等腐蚀性气体，含SRB细菌、Cl-等强腐蚀性液体，使得油气集输管网的内腐蚀尤为严重，科学、高效、经济地评估油气集输管道内腐蚀状态，及时采取内腐蚀防控措施，是提升油气集输管道本质安全的重要手段。
目前，对油气集输管道本体状态评价最为有效的手段是内检测，尤其是漏磁内检测技术，因其检测精度高在油气管道检测评价领域得到了广泛应用。常规漏磁内检测器以皮碗压差驱动为主，在电磁场和管道内摩擦力的作用下，其驱动压差普遍较高，尤其是DN150以下的小口径管道。对于油气田集输管道而言，70％以上管道都是DN150以下的小口径管道，且运行压力低(普遍低于0.5Mpa)、流速低，难以到达常规内检测器压差驱动的要求。为支撑低压低流速小口径管道内检测作业，行业内逐渐发展出了拖拽式漏磁内检测器，即用绳索拖拽驱动代替皮碗压差驱动。
在绳索拖拽作业过程中，绳索承受内检测器与管道内壁之间的摩擦力以及绳索与管道弯头之间摩擦力双重作用，且随着管道弯头数量的增加，绳索承受的拖拽力越大，一旦超过绳索可承受的拉力，绳索将会断裂，导致内检测器发生卡堵，进而无法开展内检测作业。因此准确评估拖拽式内检测器可以通过的管道弯头数量对于指导内检测至关重要。
目前，国内外尚未建立安全可靠的拖拽式内检测器弯头通过数量的确定方法，给现场内检测作业带来较为严重的安全隐患。
发明内容
一种拖拽式内检测器弯头通过数量的确定方法和装置，用于解决现有技术中无法准确评估拖拽式内检测器能够通过的管道弯头数量的问题，以达到防止拖拽式内检测器卡堵的效果。
第一方面，本申请提供一种拖拽式内检测器弯头通过数量的确定方法，包括以下步骤：
获取内检测器的启动力；
获取牵拉绳的最大可承受拉力；
根据所述内检测器的所述启动力和所述牵拉绳的所述最大可承受拉力，获取所述内检测器弯头通过数量。
进一步地，在获取所述内检测器弯头通过数量之前，还包括：获取所述内检测器的驱动系数；
根据所述内检测器的所述启动力、所述牵拉绳的所述最大可承受拉力和所述内检测器的驱动系数，获取所述内检测器弯头通过数量。
进一步地，当所述牵拉绳和所述待测管道的摩擦系数不大于0.1时，通过式(1)计算所述内检测器弯头通过数量：
式中，Nr为所述内检测器弯头通过数量，单位为个；F为所述牵拉绳的所述最大可承受拉力，单位为kg；F0为所述内检测器的所述启动力，单位为kg；k1为所述内检测器的第一驱动系数，k1为1-2；k2为所述内检测器的第二驱动系数，k2为0.1-0.3。
进一步地，当所述牵拉绳和待测管道的摩擦系数大于0.1时，通过式(2)计算所述内检测器弯头通过数量：
式中，Nr为所述内检测器弯头通过数量，单位为个；F为所述牵拉绳的所述最大可承受拉力，单位为kg；F0为所述内检测器的所述启动力，单位为kg；k3为所述内检测器的第三驱动系数，k3为0.1-3；k4为所述内检测器的第四驱动系数，k3为6-8；k5为所述内检测器的第五驱动系数，k5为16-17。
进一步地，所述内检测器的驱动系数通过以下步骤获得：
利用所述牵拉绳拖拽所述内检测器分别穿过N组实验管道，记录所述牵拉绳的N组牵拉力Fi；其中，N大于等于2；所述实验管道包括多个相互交替连通的实验直管和实验弯头，所述实验直管的尺寸和所述待测管道中的直管尺寸相同，所述实验弯头的尺寸和所述待测管道中的弯头尺寸相同；且每一组所述实验管道的实验直管和实验弯头的个数均比前一组所述实验管道的实验直管和实验弯头的个数多一个；
根据N组Ni-Fi数据，基于Kriging模型，拟合得到所述内检测器的驱动系数。
进一步地，当所述牵拉绳和所述实验管道的摩擦系数不大于0.1时，拟合得到的所述内检测器的驱动系数包括所述内检测器的第一驱动系数和所述内检测器的第二驱动系数。
进一步地，当所述牵拉绳和所述实验管道的摩擦系数大于0.1时，拟合得到的所述内检测器的驱动系数包括所述内检测器的第三驱动系数、所述内检测器的第四驱动系数和所述内检测器的第五驱动系数。
进一步地，当所述内检测器弯头通过数量不低于待测管道实际弯头数量时，使所述牵拉绳对所述内检测器进行拖拽处理，使所述内检测器穿过所述待测管道。
第二方面，本申请提供一种拖拽式内检测器弯头通过数量的检测装置，用于第一方面所述的确定方法，包括：
第一获取模块，用于获取内检测器的启动力；
第二获取模块，用于获取牵拉绳的最大可承受拉力；
第三获取模块，用于根据所述内检测器的所述启动力和所述牵拉绳的所述最大可承受拉力，获取所述内检测器弯头通过数量。
第三方面，本申请提供了一种电子设备，包括：存储器，处理器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第一方面所述的确定方法。
第四方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，所述计算机执行指令被处理器执行时用于实现如第一方面所述的确定方法。
第五方面，本申请提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现第一方面所述的确定方法。
本申请提供了一种拖拽式内检测器弯头通过数量的确定方法，通过获取内检测器的启动力；获取牵拉绳的最大可承受拉力；根据内检测器的启动力和牵拉绳的最大可承受拉力，获取内检测器弯头通过数量，从而准确评估拖拽式内检测器可以通过的管道弯头数量，有利于防止内检测器发生卡堵现象，提高管道内检测的安全性。
附图说明
图1为本申请提供的一种拖拽式内检测器弯头通过数量的确定方法流程示意图；
图2为本申请提供的一种拖拽式内检测器弯头通过数量的确定装置的结构示意图；
图3为本申请提供的一种的电子设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请的实施例，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
第一方面，本申请提供了一种拖拽式内检测器弯头通过数量的确定方法，图1为本申请提供的一种拖拽式内检测器弯头通过数量的确定方法流程示意图，如图1所示，包括以下步骤：
S01：获取内检测器的启动力；
S02：获取牵拉绳的最大可承受拉力；
S03：根据内检测器的启动力和牵拉绳的最大可承受拉力，获取内检测器弯头通过数量。
其中，内检测器的启动力可以根据内检测器的设计资料获取，牵拉绳的最大可承受拉力可以根据牵拉绳的设计参数获取；能够理解，牵拉绳应选用密度小、硬度小且强度大、耐磨性好的材料，有利于牵拉绳完整顺利的完成拖拽内检测器对管道进行内检测；本申请不限定内检测器的种类，可以是漏磁内检测器和涡流内检测器等等，凡是可以对管道进行内检测以获取待测管道的本体状态，包括破损类型、破损位置、破碎尺寸等等信息的内检测器均可；
具体地，获取内检测器的启动力；获取牵拉绳的最大可承受拉力；根据内检测器的启动力和牵拉绳的最大可承受拉力，获取内检测器弯头通过数量。
本申请提供了一种拖拽式内检测器弯头通过数量的确定方法，能够根据内检测器的启动力和牵拉绳的最大可承受拉力，获取内检测器弯头通过数量，从而准确评估拖拽式内检测器可以通过的管道弯头数量，有利于防止内检测器发生卡堵现象，提高管道内检测的安全性。
进一步地，在获取内检测器弯头通过数量之前，还包括：获取内检测器的驱动系数；
根据内检测器的启动力、牵拉绳的最大可承受拉力和内检测器的驱动系数，获取内检测器弯头通过数量。
能够理解，内检测器的驱动系数和牵拉绳与待测管道之间的摩擦力、待测管道的弯头数量等等因素有关；根据内检测器的启动力、牵拉绳的最大可承受拉力和内检测器的驱动系数，获取内检测器弯头通过数量，能够进一步地提高确定方法的准确性以及安全性。
在一具体实施方式中，当牵拉绳和待测管道的摩擦系数不大于0.1时，通过式(1)计算内检测器弯头通过数量：
式中，Nr为内检测器弯头通过数量，单位为个；F为牵拉绳的最大可承受拉力，单位为kg；F0为内检测器的启动力，单位为kg；k1为内检测器的第一驱动系数，k1为1-2；k2为内检测器的第二驱动系数，k2为0.1-0.3；
另一具体实施方式中，当牵拉绳和待测管道的摩擦系数大于0.1时，通过式(2)计算内检测器弯头通过数量：
式中，Nr为内检测器弯头通过数量，单位为个；F为牵拉绳的最大可承受拉力，单位为kg；F0为内检测器的启动力，单位为kg；k3为内检测器的第三驱动系数，k3为0.1-3；k4为内检测器的第四驱动系数，k4为6-8；k5为内检测器的第五驱动系数，k5为16-17。
其中，牵拉绳和待测管道的摩擦系数可以通过资料查询方式或仪器测得，并且可以通过对牵拉绳涂抹黄油的方式降低牵拉绳和待测管道的摩擦系数；
当牵拉绳和待测管道的摩擦系数不大于0.1时，通过式(1)计算内检测器弯头通过数量，此时，内检测器的驱动系数包括第一驱动系数和第二驱动系数，内检测器的第一驱动系数k1为1-2，内检测器的第二驱动系数k2为0.1-0.3，上述内检测器的驱动系数可以在给定范围内任意取值，在上述范围中，能够更好的与牵拉绳的最大可承受拉力匹配，通过式(1)能够进一步准确的计算内检测器弯头通过数量；
而当牵拉绳和待测管道的摩擦系数大于0.1时，通过式(2)计算内检测器弯头通过数量，此时，内检测器的驱动系数包括第三驱动系数、第四驱动系数和第五驱动系数，内检测器的第三驱动系数k3为1-3，内检测器的第四驱动系数k4为6-8，内检测器的第五驱动系数k5为16-17，上述内检测器的驱动系数可以在给定范围内任意取值，在上述范围中，能够更好的与牵拉绳的最大可承受拉力匹配，通过式(2)能够更加准确的计算内检测器弯头通过数量；本申请提供的拖拽式内检测器弯头通过数量的确定方法通过考虑内检测器、牵拉绳和待测管道之间的实际情况，能够进一步地提高确定方法的准确性和安全性。
为了进一步精确内检测器的驱动系数，使本申请提供的确定方法更加客观准确，内检测器的驱动系数通过以下步骤获得：
利用牵拉绳拖拽内检测器分别穿过N组实验管道，记录牵拉绳的N组牵拉力Fi；其中，N大于等于2；实验管道包括多个相互交替连通的实验直管和实验弯头，实验直管的尺寸和待测管道中的直管尺寸相同，实验弯头的尺寸和待测管道中的弯头尺寸相同；且每一组实验管道的实验直管和实验弯头的个数均比前一组实验管道的实验直管和实验弯头的个数多一个；
根据N组Ni-Fi数据，基于Kriging模型，拟合得到内检测器的驱动系数。
本申请不限定实验管道的来源，凡是包括多个相互交替连通的实验直管和实验弯头，并且实验直管的尺寸和待测管道中的直管尺寸相同、实验弯头的尺寸和待测管道中的弯头尺寸相同的实验管道均可；具体地，实验管道可以是市售的，也可以通过采购N个与待测管道尺寸相同的直管和弯头、依次交替的将一段直管和一个弯头焊接制成实验管道；可选地，可以使用与内检测器所需启动力相同的负载来代替内检测器，以获取内检测器的驱动系数；牵拉力可以通过使用测量拉力的弹簧秤与牵拉绳连接获取。
在一具体实施方式中，将牵拉绳的一端与内检测器连接，另一端与弹簧秤连接；利用牵拉绳拖拽内检测器分别穿过N组实验管道，记录牵拉绳的N组牵拉力Fi；其中，N大于等于2；实验管道包括多个相互交替连通的实验直管和实验弯头，实验直管的尺寸和待测管道中的直管尺寸相同，实验弯头的尺寸和待测管道中的弯头尺寸相同；且每一组实验管道的实验直管和实验弯头的个数均比前一组实验管道的实验直管和实验弯头的个数多一个。
能够理解，N组实验管道包括N个弯头，通过上述实验步骤能够得到N组Ni-Fi数据；根据N组Ni-Fi数据，基于Kriging模型，拟合得到内检测器的更为精确的唯一的驱动系数；通过上述步骤有利于进一步地细化内检测器的驱动系数，进一步地提高管道确定方法的准确性。
其中，当牵拉绳和实验管道的摩擦系数不大于0.1时，拟合得到的内检测器的驱动系数包括内检测器的第一驱动系数和内检测器的第二驱动系数；
当牵拉绳和实验管道的摩擦系数大于0.1时，拟合得到的内检测器的驱动系数包括内检测器的第三驱动系数、内检测器的第四驱动系数和内检测器的第五驱动系数。
通过进一步考虑牵拉绳和实验管道的摩擦系数的影响，计算相应情况下的内检测器的驱动系数，可以进一步地细化内检测器的驱动系数，使确定方法更加准确。
进一步地，当内检测器弯头通过数量不低于待测管道实际弯头数量时，使牵拉绳对内检测器进行拖拽处理，使内检测器穿过待测管道。
能够理解，当内检测器弯头通过数量不低于待测管道实际弯头数量时，内检测器可以顺利的穿过整个待测管道，牵拉绳不会发生断裂，避免发生卡堵现象，此时使牵拉绳对内检测器进行拖拽处理，使内检测器穿过待测管道，完成对待测管道的内检测，以获取待测管道的本体状态，包括破损类型、破损位置、破碎尺寸等等信息，有利于及时对待测管道采取防控和修补措施，提升油气集输管道本质安全。
第二方面，本申请提供了一种拖拽式内检测器弯头通过数量的检测装置，用于执行第一方面的确定方法，如图2所示，包括：
第一获取模块21，用于获取内检测器的启动力；
第二获取模块22，用于获取牵拉绳的最大可承受拉力；
第三获取模块23，用于根据内检测器的启动力和牵拉绳的最大可承受拉力，获取内检测器弯头通过数量。
本申请提供的一种拖拽式内检测器弯头通过数量的检测装置，可执行第一方面的确定方法，其实现原理和技术效果类似，此处不做赘述。
可选地，上述拖拽式内检测器弯头通过数量的检测装置还包括：第四获取模块，用于获取内检测器的驱动系数；
此时的第三获取模块，用于根据内检测器的启动力、牵拉绳的最大可承受拉力和内检测器的驱动系数，获取内检测器弯头通过数量。
第三方面，如图3所示，本申请还提供了一种电子设备30，包括：存储器302，处理器301；
存储器302存储计算机执行指令；
处理器301执行存储器存储的计算机执行指令，使得处理器执行第一方面的确定方法。
本申请提供的电子设备包括：至少一个处理器301和存储器302。
可选地，该电子设备还包括通信部件303。其中，处理器301、存储器302以及通信部件303通过总线连接。
在具体实现过程中，至少一个处理器执行存储器存储的计算机执行指令，使得至少一个处理器执行上述的方法。
处理器301的具体实现过程可参见上述方法实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
在上述的实施例中，应理解，处理器可以是中央处理单元(英文：Central Processing Unit，简称：CPU)，还可以是其他通用处理器、数字信号处理器(英文：Digital Signal Processor，简称：DSP)、专用集成电路(英文：Application Specific Integrated Circuit，简称：ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
存储器可能包含高速存储器(Random Access Memory，RAM)，也可能还包括非易失性存储器(Non-volatile Memory，NVM)，例如至少一个磁盘存储器。
总线可以是工业标准体系结构(Industry Standard Architecture，ISA)总线、外部设备互连(Peripheral Component，PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，本申请附图中的总线并不限定仅有一根总线或一种类型的总线。
第四方面，本申请提供了一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，计算机执行指令被处理器执行时用于实现第一方面的确定方法。
上述可读存储介质可以是由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。可读存储介质可以是通用或专用计算机能够存取的任何可用介质。
一种示例性的可读存储介质耦合至处理器，从而使处理器能够从该可读存储介质读取信息，且可向该可读存储介质写入信息。当然，可读存储介质也可以是处理器的组成部分。处理器和可读存储介质可以位于专用集成电路(Application Specific Integrated Circuits，简称：ASIC)中。当然，处理器和可读存储介质也可以作为分立组件存在于设备中。
单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
第五方面，本申请提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现第一方面的确定方法。
最后应说明的是：本领域技术人员在考虑说明书及实践这里公开的申请后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段，并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本申请的范围仅由所附的权利要求书来限制。
以下，通过具体实施例对本申请提供的一种管道的确定方法进行详细的介绍。
实施例1
待测管道为一条外径114mm掺水管道，壁厚8mm，管道沿线弯头均为1.5D，弯头数量为12个，管道运行压力低，仅为0.1MPa，需要开展漏磁内检测来评价管道本体状态。常规皮碗压差驱动的漏磁内检测器因所需的驱动压差高，导致待测管道无法承受因而无法使用，因此采用本申请提供的确定方法，包括以下步骤：
获取内检测器的启动力F0＝600kg；
获取牵拉绳的最大可承受拉力F＝147kN≈14700kg；
对牵拉绳涂抹黄油，测得牵拉绳和实验管道的摩擦系数为0.06；
将牵拉绳的一端与内检测器连接，另一端与弹簧秤连接；利用牵拉绳拖拽1kg的负载分别穿过5组实验管道，通过测量拉力的弹簧秤记录牵拉绳的5组牵拉力Fi；其中，第一组实验管道包括4个相互交替连通的实验直管和实验弯头，且每一组实验管道的实验直管和实验弯头的个数均比前一组实验管道的实验直管和实验弯头的个数多一个；实验直管的外径114mm、壁厚8mm，实验弯头的尺寸为1.5D；得到5组Ni-Fi数据，如表1所示。
表1弯头数量Ni-牵拉力Fi的对照表
根据表1中5组Ni-Fi数据，基于Kriging模型，拟合得到内检测器的第一驱动系数k1＝1.1398，第二驱动系数k2＝0.1031；
将上述数据带入式(1)计算内检测器弯头通过数量：
式中，Nr为内检测器弯头通过数量，单位为个；F为牵拉绳的最大可承受拉力，单位为kg；F0为内检测器的启动力，单位为kg；k1为内检测器的第一驱动系数，k1为1.1398；k2为内检测器的第二驱动系数，k2为0.1031。
即，用黄油对牵拉绳润滑，内检测器和实验管道的摩擦系数为0.06的情况下，内检测器可以通过15个弯头。
由于内检测器弯头通过数量不低于待测管道实际弯头数量，使牵拉绳对内检测器进行拖拽处理，使内检测器穿过待测管道；完成对管道的内检测。
实施例2
待测管道为一条外径114mm掺水管道，壁厚8mm，管道沿线弯头均为1.5D，弯头数量为12个，管道运行压力低，仅为0.1MPa，需要开展漏磁内检测来评价管道本体状态。常规皮碗压差驱动的漏磁内检测器因所需的驱动压差高，导致待测管道无法承受因而无法使用，因此采用本申请提供的确定方法，包括以下步骤：
获取内检测器的启动力F0＝600kg；
获取牵拉绳的最大可承受拉力F＝147kN≈14700kg；
测得牵拉绳和实验管道的摩擦系数为0.32；
将牵拉绳的一端与内检测器连接，另一端与弹簧秤连接；利用牵拉绳拖拽1kg的负载分别穿过5组实验管道，通过测量拉力的弹簧秤记录牵拉绳的5组牵拉力Fi；其中，第一组实验管道包括4个相互交替连通的实验直管和实验弯头，且每一组实验管道的实验直管和实验弯头的个数均比前一组实验管道的实验直管和实验弯头的个数多一个；实验直管的外径114mm、壁厚8mm，实验弯头的尺寸为1.5D；得到5组Ni-Fi数据，如表2所示。
表2弯头数量Ni-牵拉力Fi的对照表
根据表2中5组Ni-Fi数据，基于Kriging模型，拟合得到内检测器的第三驱动系数k3＝0.907，第四驱动系数k4＝6.7557，第五驱动系数k5＝16.0628。
将上述数据带入式(2)计算内检测器弯头通过数量：
式中，Nr为内检测器弯头通过数量，单位为个；F为牵拉绳的最大可承受拉力，单位为kg；F0为内检测器的启动力，单位为kg；k3为内检测器的第三驱动系数，k3为0.907；k4为内检测器的第四驱动系数，k4为6.7557；k5为内检测器的第五驱动系数，k5为16.0628。
即，牵拉绳和实验管道的摩擦系数为0.32的情况下，内检测器只能通过8个弯头。
由于内检测器弯头通过数量低于待测管道实际弯头数量，放弃使牵拉绳对内检测器进行拖拽处理，使内检测器穿过待测管道。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (12)

  1. 一种拖拽式内检测器弯头通过数量的确定方法，其中包括以下步骤：
    获取内检测器的启动力；
    获取牵拉绳的最大可承受拉力；
    根据所述内检测器的所述启动力和所述牵拉绳的所述最大可承受拉力，获取所述内检测器弯头通过数量。
  2. 根据权利要求1所述的确定方法，其中在获取所述内检测器弯头通过数量之前，还包括：获取所述内检测器的驱动系数；
    根据所述内检测器的所述启动力、所述牵拉绳的所述最大可承受拉力和所述内检测器的驱动系数，获取所述内检测器弯头通过数量。
  3. 根据权利要求1或2所述的确定方法，其中当所述牵拉绳和待测管道的摩擦系数不大于0.1时，通过式(1)计算所述内检测器弯头通过数量：
    式中，Nr为所述内检测器弯头通过数量，单位为个；F为所述牵拉绳的所述最大可承受拉力，单位为kg；F0为所述内检测器的所述启动力，单位为kg；k1为所述内检测器的第一驱动系数，k1为1-2；k2为所述内检测器的第二驱动系数，k2为0.1-0.3。
  4. 根据权利要求1或2所述的确定方法，其中当所述牵拉绳和所述待测管道的摩擦系数大于0.1时，通过式(2)计算所述内检测器弯头通过数量：
    式中，Nr为所述内检测器弯头通过数量，单位为个；F为所述牵拉绳的所述最大可承受拉力，单位为kg；F0为所述内检测器的所述启动力，单位为kg；k3为所述内检测器的第三驱动系数，k3为0.1-3；k4为所述内检测器的第四驱动系数，k4为6-8；k5为所述内检测器的第五驱动系数，k5为16-17。
  5. 根据权利要求2-4中任意一项所述的确定方法，其中所述内检测器的驱动系数通过以下步骤获得：
    利用所述牵拉绳拖拽所述内检测器分别穿过N组实验管道，记录所述牵拉绳的N组牵拉力Fi；其中，N大于等于2；所述实验管道包括多个相互交替连通的实验直管和实验弯头，所述实验直管的尺寸和所述待测管道中的直管尺寸相同，所述实验弯头的尺寸和所述待测管道中的弯头尺寸相同；且每一组所述实验管道的实验直管和实验弯头的个数均比前一组所述实验管道的实验直管和实验弯头的个数多一个；
    根据N组Ni-Fi数据，基于Kriging模型，拟合得到所述内检测器的驱动系数。
  6. 根据权利要求5所述的确定方法，其中当所述牵拉绳和所述实验管道的摩擦系数不大于0.1时，拟合得到的所述内检测器的驱动系数包括所述内检测器的第一驱动系数和所述内检测器的第二驱动系数。
  7. 根据权利要求5所述的确定方法，其中当所述牵拉绳和所述实验管道的摩擦系数大于0.1时，拟合得到的所述内检测器的驱动系数包括所述内检测器的第三驱动系数、所述内检测器的第四驱动系数和所述内检测器的第五驱动系数。
  8. 根据权利要求1-7任一项所述的确定方法，其中当所述内检测器弯头通过数量不低于待测管道实际弯头数量时，使所述牵拉绳对所述内检测器进行拖拽处理，使所述内检测器穿过所述待测管道。
  9. 一种拖拽式内检测器弯头通过数量的确定装置，用于执行权利要求1-8所述的确定方法，其中包括：
    第一获取模块，用于获取内检测器的启动力；
    第二获取模块，用于获取牵拉绳的最大可承受拉力；
    第三获取模块，用于根据所述内检测器的所述启动力和所述牵拉绳的所述最大可承受拉力，获取所述内检测器弯头通过数量。
  10. 一种电子设备，其中包括：存储器，处理器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1-8任一项所述的确定方法。
  11. 一种计算机可读存储介质，其中所述计算机可读存储介质中存储有计算机执行指令，所述计算机执行指令被处理器执行时用于实现如权利要求1-8任一项所述的确定方法。
  12. 一种计算机程序产品，其中包括计算机程序，该计算机程序被处理器执行时实现权利要求1-8任一项所述的确定方法。
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