A transmission line tension clamp safety assessment method, electronic equipment and medium

By conducting mechanical experiments and X-ray detection on tension clamps, an evaluation system is built, which solves the problem that the existing technology is difficult to evaluate the safety of tension clamps, and accurately identify and evaluate the impact of different defect types, which is convenient for reasonable maintenance.

CN115452868BActive Publication Date: 2025-03-18STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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Patent Information

Application Number
CN202211136464.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-19
Publication Date
2025-03-18
Estimated Expiration
2042-09-19

AI Technical Summary

Technical Problem

The prior art is difficult to accurately evaluate the safety of tension clamps, and it is impossible to effectively identify the impact of different defect types on the safety of tension clamps.

Method used

By making tension clamps of different defect types, conducting mechanical experiments to measure the tension bearing capacity, and obtaining the image map through X-rays, building an evaluation system, inputting the X-ray image map of the tension clamp to be tested, and obtaining its safety evaluation results.

Benefits of technology

The accuracy and effectiveness of the evaluation of the safety of tension clamps is achieved, and the impact of different defect types on the safety of tension clamps is able to be identified, which is convenient for the reasonable arrangement of maintenance order and improve line safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a method for evaluating the safety of a transmission line tension clamp, an electronic device and a medium, and relates to the technical field of tension clamp crimping quality detection. The invention solves the problem that the existing X-ray detection cannot evaluate the degree of influence of different defect types on the safety of the tension clamp. The technical scheme thereof mainly comprises: S1, making tension clamps of different defect types for mechanical experiments, obtaining the breaking bearing capacity of the tension clamps of different defect types, and obtaining X-ray images of the tension clamps of different defect types through X-rays; S2, evaluating the safety of the tension clamp through the breaking bearing capacity, and obtaining the safety evaluation result of the tension clamp; S3, constructing an evaluation system through the X-ray image and the safety evaluation result; S4, inputting the X-ray image of the tension clamp to be tested into the evaluation system, and obtaining the safety evaluation result of the tension clamp to be tested; and constructing an evaluation system to realize the safety evaluation of the tension clamp.
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Description

Technical Field

[0001] The invention relates to the technical field of strain clamp crimping quality detection, and more specifically, to a transmission line strain clamp safety assessment method, electronic equipment and medium. Background Art

[0002] The tension clamp is a hardware used to fix aluminum stranded wire or lightning conductor on the insulator string of the tension, corner, and terminal towers, and bear the tension of the aluminum stranded wire. It is an indispensable component of the overhead transmission line. It must not only bear the full tension of the conductor and ground wire, but also bear the current-carrying task. The aluminum stranded wire tension clamp consists of a steel anchor and an aluminum tube. The steel anchor is used to connect and anchor the steel core of the steel-core aluminum stranded wire. The pressure causes the aluminum tube to produce plastic deformation, so that the clamp and the aluminum stranded wire are combined together. The installation and construction of the tension clamp is an aerial operation and a hidden project. The process control is difficult, and it is impossible to accurately judge the internal defects and crimping quality only by the appearance size inspection. It is easy to have defects such as steel anchor groove leakage, steel core broken strands, hardware damage, unrealistic crimping, and gaps in the steel anchor, which seriously affect its safety, reliability and service life. It will bury safety hazards for the long-term operation of the line, especially the "three-span" section line, and even cause serious power grid accidents.

[0003] As an effective auxiliary detection method, X-ray detection technology can deeply inspect the internal defects of the tension clamp and present them visually. However, the existing X-ray detection can only determine the type of defects in the tension clamp, and cannot evaluate the impact of different defect types on the safety of the tension clamp. Summary of the invention

[0004] The purpose of this application is to provide a transmission line tension clamp safety assessment method, electronic equipment and medium, to construct an assessment system, and to achieve safety assessment of the tension clamp.

[0005] In the first aspect, the above technical objectives of the present application are achieved through the following technical solutions:

[0006] S1. Make tension clamps with different defect types to conduct mechanical experiments, obtain the tensile bearing capacity of tension clamps with different defect types, and obtain X-ray images of tension clamps with different defect types through X-rays;

[0007] S2. Perform safety assessment on the tension clamp by breaking the bearing capacity to obtain a safety assessment result of the tension clamp;

[0008] S3, constructing an evaluation system through X-ray images and safety evaluation results;

[0009] S4. Input the X-ray image of the tension clamp to be tested into the evaluation system to obtain the safety evaluation result of the tension clamp to be tested.

[0010] The above-mentioned technical scheme is adopted to manufacture strain clamps with different defect types, and the breaking bearing capacity of the strain clamps with different defect types is measured through mechanical experiments, thereby determining the safety assessment results of the strain clamps with different defect types. An evaluation system is constructed based on the defect types and safety assessment results. When in use, it is only necessary to input the X-ray image of the strain clamp to be tested into the system to confirm the defect type of the strain clamp to be tested, thereby determining the safety assessment result of the strain clamp to be tested. Compared with the prior art, the present application further confirms the safety impact of various defect types on the basis of confirming the defect type, and evaluates them through the evaluation system, thereby facilitating timely maintenance of strain clamps with greater hazards.

[0011] Furthermore, S1 also includes constructing different types of tension clamp models, simulating different defect types to conduct mechanical experiments, obtaining the tensile bearing capacity of tension clamps of different models and different defect types, and obtaining X-ray images of tension clamps of different models and different defect types through X-rays.

[0012] Furthermore, different types of tension clamp models were constructed to simulate different defect types for mechanical experiments, and the tensile strength of tension clamps with different types of defects was obtained, including:

[0013] Finite element software is used to model different types of tension clamps, simulate the crimping process of different defect types, and obtain the tension clamps after crimping;

[0014] The tensile test simulation of the crimped tension clamp is carried out to obtain the breaking capacity of tension clamps with different models and different defect types.

[0015] Furthermore, S1 also includes conducting wind vibration fatigue tests on tension clamps with different defect types and tension clamp models of different types.

[0016] Furthermore, different defect types include: insufficient compression in the anti-skid groove, excessive compression in the non-crimped area of ​​the aluminum tube at the anti-skid groove, insufficient insertion depth of the steel core in the steel anchor tube, no compression of the steel core at the steel anchor tube, uneven crimping of the steel anchor tube, unqualified crimping length of the aluminum stranded wire and the aluminum tube, uneven crimping of the aluminum tube at the aluminum stranded wire, excessive compression in the non-crimped area of ​​the aluminum tube at the aluminum stranded wire, mixed crimping, insufficient edge distance, damaged steel core and bent steel anchor tube.

[0017] Furthermore, S2 includes: calculating the overall strength loss of the tension clamp according to the breaking bearing capacity, classifying the overall strength loss, and obtaining a safety assessment result of the tension clamp.

[0018] Furthermore, the overall strength loss of the tension clamp is the ratio of the difference between the rated bearing capacity and the breaking bearing capacity to the rated bearing capacity.

[0019] Furthermore, if there are no defects in the tension clamp, the safety assessment result is normal; if there are defects in the tension clamp, and the overall strength loss of the tension clamp is below 5%, the safety assessment result is general; if there are defects in the tension clamp, and the overall strength loss of the tension clamp is between 5%-17%, the safety assessment result is major; if there are defects in the tension clamp, and the overall strength loss of the tension clamp is above 17%, the safety assessment result is urgent.

[0020] In a second aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement the above-mentioned method for assessing the safety of a transmission line tension clamp when executing the program.

[0021] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is used to implement the above-mentioned method for assessing the safety of a transmission line tension clamp.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] On the one hand, the present application evaluates the safety of tension clamps with different defect types by the breaking bearing capacity of the tension clamps. Compared with the traditional X-ray identification of defect types, the safety impact of different defect types is further determined, which facilitates operators to reasonably arrange the maintenance sequence;

[0024] On the other hand, the present application establishes an evaluation system through X-ray images and safety assessment results. By inputting the X-ray image of the tension clamp to be tested, the safety assessment result of the tension clamp to be tested can be obtained, which is convenient for guiding the operator to arrange maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0026] Figure 1 A schematic diagram of a flow chart of a method for evaluating the safety of a tension clamp for a power transmission line provided by an embodiment of the present invention;

[0027] Figure 2 A typical structural diagram of a tension clamp provided in one embodiment of the present invention;

[0028] Figure 3 A normal crimping X-ray image provided by an embodiment of the present invention;

[0029] Figure 4 An X-ray image of a 2-groove anti-skid groove with less pressure provided by an embodiment of the present invention;

[0030] Figure 5 A multi-pressure X-ray image of a non-crimped area of ​​an aluminum tube at an anti-slip groove provided by an embodiment of the present invention;

[0031] Figure 6 This is an X-ray diagram of a steel core inserted to a depth of 50% provided by an embodiment of the present invention;

[0032] Figure 7 An uncompressed X-ray image of the steel core at the steel anchor pipe provided by one embodiment of the present invention;

[0033] Figure 8 An X-ray image of uneven crimping of a steel anchor pipe provided by an embodiment of the present invention;

[0034] Fig. 9 An X-ray diagram showing that the crimping length of the aluminum stranded wire and the aluminum tube is unqualified according to one embodiment of the present invention;

[0035] Fig.10 An X-ray image of uneven crimping of an aluminum tube at an aluminum stranded wire provided by an embodiment of the present invention;

[0036] Fig.11 A multi-pressure X-ray diagram of a non-crimped area of ​​an aluminum tube at an aluminum stranded wire provided by an embodiment of the present invention;

[0037] Fig.12 An X-ray diagram of a hybrid crimping provided by an embodiment of the present invention;

[0038] Fig.13 An X-ray image of insufficient margin provided by an embodiment of the present invention;

[0039] Fig.14 An X-ray image of steel core damage provided by an embodiment of the present invention;

[0040] Fig.15 This is an X-ray diagram of the bending of a steel anchor pipe provided in one embodiment of the present invention.

[0041] Marks and corresponding parts names in the attached drawings:

[0042] 1. Steel anchor pipe; 2. Aluminum pipe; 3. Aluminum stranded wire. DETAILED DESCRIPTION

[0043] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of the function, operation or element applied for, and does not limit the increase of one or more functions, operations or elements. In addition, as used in various embodiments of the present application, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or the possibility of increasing one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items.

[0044] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A / and B" may include A, may include B, or may include both A and B.

[0045] The expressions (such as "first", "second", etc.) used in the various embodiments of the present application may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0046] It should be noted that if it is described that one component element is “connected” to another component element or is “connected to” another component element, the first component element may be directly connected to the second component element, and a third component element may be “connected” between the first component element and the second component element. Conversely, when one component element is “directly connected” to another component element or is “directly connected to” another component element, it can be understood that there is no third component element between the first component element and the second component element.

[0047] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0048] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with examples and drawings. The illustrative implementation scheme of the present application and its description are only used to explain the present application and are not intended to limit the present application.

[0049] like Figure 1 As shown, it is a schematic diagram of the process of the safety assessment method of the transmission line tension clamp, and the safety assessment method of the transmission line tension clamp includes:

[0050] S1. Make tension clamps with different defect types to conduct mechanical experiments, obtain the tensile bearing capacity of tension clamps with different defect types, and obtain X-ray images of tension clamps with different defect types through X-rays;

[0051] S2. Perform safety assessment on the tension clamp by breaking the bearing capacity to obtain a safety assessment result of the tension clamp;

[0052] S3, constructing an evaluation system through X-ray images and safety evaluation results;

[0053] S4. Input the X-ray image of the tension clamp to be tested into the evaluation system to obtain the safety evaluation result of the tension clamp to be tested.

[0054] When this embodiment is implemented, strain clamps with different defect types are artificially made, mechanical tests are carried out to obtain the breaking bearing capacity of the strain clamps with different defect types, and X-ray images of the strain clamps with different defect types are obtained by X-rays; the degree of defects of the specimens, that is, the safety of the strain clamp, is evaluated according to the breaking bearing capacity to obtain a safety assessment result of the strain clamp; an evaluation system is constructed using the X-ray images of different defect types and the corresponding safety assessment results. When in use, it is only necessary to input the X-ray image of the strain clamp to be tested into the evaluation system to confirm the defect type of the strain clamp to be tested, and then determine the safety assessment result of the strain clamp to be tested.

[0055] It should be noted that obtaining X-ray images of the tension clamp by X-rays and identifying the defect type is an existing technology. For example, the operator uses a rope to lift the X-ray non-destructive testing equipment to the vicinity of the transmission line on the tension tower, and then uses an insulating rod to move it to the transmission line tension clamp and fix it. The instrument can be remotely operated to detect various defects inside the tension clamp.

[0056] In some embodiments of the present application, step S1 further includes: constructing models of different types of tension clamps, simulating different defect types to conduct mechanical experiments, obtaining the breaking capacity of tension clamps of different types and defect types, and obtaining X-ray images of tension clamps of different types and defect types through X-rays. By constructing a model, various types of tension clamps on the market can be covered, providing a more comprehensive breaking capacity of tension clamps.

[0057] Specifically, the design drawings of other types of tension clamps are obtained, and various types of tension clamps are simulated through finite element software such as Deform, MSC.MARC, ANSYS, and COMSOL Multiphysics, and then the crimping process of various defect types is simulated to obtain the tension clamp after crimping and the stress-strain distribution after crimping. Based on the stress-strain distribution after crimping, the tension test simulation of the tension clamp after crimping is performed to obtain the tensile bearing capacity of tension clamps of different types and different defect types. By simulating the crimping process and then performing a tensile test simulation, a more realistic tensile bearing capacity can be obtained.

[0058] In some embodiments of the present application, step S1 also includes conducting wind vibration fatigue tests on tension clamps with different defect types and tension clamp models of different models. However, since the tension clamps with different defect types and tension clamp models produced have not been actually erected and used on site, the tension loading time in the tension test is much shorter than the time for bearing tension in actual line application, and almost no fatigue loss is generated. Therefore, with reference to the "Study on the Wind Vibration Fatigue Response Test of Steel-core Aluminum Stranded Wire Joint Tube", the aluminum stranded wire and aluminum tube are subjected to wind vibration fatigue tests, so that the breaking bearing capacity obtained by the tension test is closer to reality.

[0059] In some embodiments of the present application, in step S2, it includes: calculating the overall strength loss of the tension clamp according to the breaking bearing capacity, classifying the overall strength loss, and obtaining a safety assessment result of the tension clamp, wherein the overall strength loss calculation method is as follows:

[0060] Overall strength loss% = (rated bearing capacity – breaking bearing capacity) / rated bearing capacity

[0061] Specifically, if there are no defects in the tension clamp, the safety assessment result is normal; if there are defects in the tension clamp and the overall strength loss of the tension clamp is less than 5%, the safety assessment result is general; if there are defects in the tension clamp and the overall strength loss of the tension clamp is between 5%-17%, the safety assessment result is major; if there are defects in the tension clamp and the overall strength loss of the tension clamp is more than 17%, the safety assessment result is urgent.

[0062] Typical structure diagram of tension clamp, such as Figure 2 As shown, the tension clamp includes: a steel anchor tube 1, an aluminum tube 2 and an aluminum stranded wire 3. The aluminum stranded wire 3 has a steel core inserted therein. When the tension clamp is crimped, one end of the aluminum stranded wire 3 is firstly peeled off to expose a section of the steel core, and then the end of the aluminum stranded wire 3 with the exposed steel core is inserted into the aluminum tube 2, and the steel core is connected to the steel anchor tube 1. The steel anchor tube 1 is fixed to the end of the aluminum tube 2. The X-ray imaging part can be divided into three areas: A, where the steel anchor tube is crimped with the aluminum tube, B, where the steel anchor tube is crimped with the steel core, and C, where the aluminum tube is crimped with the aluminum stranded wire.

[0063] According to the quality requirements and specifications for crimping of tension clamps and the statistical data on the defects of tension clamps, it can be summarized that there are 12 common types of defects in tension clamps. At the crimping point A between the steel anchor tube and the aluminum tube, it is easy to have defects such as insufficient pressure on the anti-slip groove and excessive pressure on the non-crimping area of ​​the aluminum tube at the anti-slip groove; at the crimping point B between the steel anchor tube and the steel core, it is easy to have defects such as insufficient insertion depth of the steel core in the steel anchor tube, no pressure on the steel core at the steel anchor tube, and uneven pressure connection of the steel anchor tube; at the crimping point C between the aluminum tube and the aluminum stranded wire, it is easy to have defects such as unqualified crimping length of the aluminum stranded wire and the aluminum tube, uneven pressure connection of the aluminum tube at the aluminum stranded wire, excessive pressure on the non-crimping area of ​​the aluminum tube at the aluminum stranded wire, and mixed pressure connection; in addition, the tension clamp is also prone to defects such as insufficient edge distance, damaged steel core, and bending of the steel anchor tube. The X-ray image of a normally crimped tension clamp is shown in the figure below. Figure 3 shown.

[0064] In a specific implementation, in step S1, X-ray images of tension clamps with different defect types are obtained by X-ray, such as Figure 4-15 As shown, 4 types of tension clamps are artificially made, and each type of tension clamp covers no less than 10 types of defects. Tensile tests are carried out to obtain the breaking bearing capacity.

[0065] Specifically, the instruments for the tensile test include: SY-J-1000 / 80-A hydraulic crimping machine, 300kN microcomputer-controlled tensile testing machine, X-ray imaging system and crimping supporting tools; the tensile test is carried out in accordance with the national standards "GB1179-2018 Standard "Round Wire Concentric Stranded Overhead Lines"" and "GBT 2317.1-2008 Power Fittings Test Method: Part 1: Mechanical Test" to obtain the breaking capacity of tension clamps with different defect types, see Table 1-12.

[0066] For the tension clamp with less pressure in the anti-slip groove, the X-ray image is as follows Figure 4 As shown in Table 1, the tensile test results show that the groove at the steel anchor pipe is the main load-bearing part, and the number of groove crimpings has a great influence on the bearing capacity. The * in the table indicates the test data whose bearing capacity does not meet the requirements.

[0067] Table 1 Tensile test results of anti-skid groove with less pressure

[0068]

[0069]

[0070] For the tension clamp with multiple compression in the non-crimped area of ​​the aluminum tube at the anti-slip groove, the X-ray image is as follows Figure 5 As shown in Table 2, the tensile test results show that the non-crimped area of ​​the aluminum tube at the anti-slip groove is more compressed. In the absence of cracks, it has little effect on the bearing capacity of the wire clamp. The * in the table indicates the test data whose bearing capacity does not meet the requirements.

[0071] Table 2 Tensile test results of the non-pressed area of ​​the aluminum tube at the anti-slip groove

[0072]

[0073] For insufficient insertion depth of the steel core, the X-ray image is as follows Figure 6 As shown in Table 3, the tensile test results show that when the insertion depth of the aluminum stranded wire steel core is greater than 50%, the bearing capacity is basically qualified. The * in the table indicates the test data whose bearing capacity does not meet the requirements.

[0074] Table 3 Tensile test results of insufficient steel core insertion depth

[0075]

[0076]

[0077] For the steel anchor pipe where the steel core is not compressed, the X-ray image is as follows Figure 7 As shown in Table 4, the tensile test results show that when the aluminum stranded wire steel core is not compressed by ≤80%, the tensile loss is within 5%, and the bearing capacity is basically qualified. The * in the table indicates the test data that the bearing capacity does not meet the requirements.

[0078] Table 4 Tensile test results of steel core without compression

[0079]

[0080] For the uneven crimping of steel anchor pipe, the X-ray image is as follows Figure 8 As shown in Table 5, the tensile test results show that the steel anchor pipe is not flat when crimped, and the bearing capacity is basically qualified. The * in the table indicates the test data whose bearing capacity does not meet the requirements.

[0081] Table 5 Tensile test results of uneven steel anchor pipe crimping

[0082]

[0083] For the unqualified crimping length of aluminum stranded wire and aluminum tube, the X-ray image is as follows Fig. 9 As shown in Table 6, the tensile test results show that the crimping length of the aluminum tube and the aluminum stranded wire is greater than 50%, and the bearing capacity is basically qualified. The * in the table indicates the test data whose bearing capacity does not meet the requirements.

[0084] Table 6 Tensile test results of aluminum stranded wire and aluminum tube crimping length that failed

[0085]

[0086] For the uneven crimping of the aluminum tube at the aluminum strand, the X-ray image is as follows Fig.10 As shown in Table 7, the tensile test results show that the aluminum tube crimping at the aluminum stranded wire is uneven, and the bearing capacity is basically qualified.

[0087] Table 7 Tensile test results of uneven crimping of aluminum tube at aluminum stranded wire

[0088]

[0089] For the aluminum stranded wire, the non-crimped area of ​​the aluminum tube is over-pressed. The X-ray image is as follows Fig.11 As shown in Table 8, the tensile test results show that in the absence of cracks, there is little effect on the bearing capacity of the wire clamp.

[0090] Table 8 Tensile test results of aluminum stranded wire in non-crimped area of ​​aluminum tube

[0091]

[0092]

[0093] For mixed crimping, the X-ray image is as follows Fig.12 As shown in Table 9, the tensile test results show that the bearing capacity of the tension clamp of the mixed crimped aluminum tube is basically qualified.

[0094] Table 9 Tensile test results of aluminum tube mixed crimping

[0095]

[0096] For insufficient margins, the X-ray image is as follows Fig.13 As shown in Table 10, the tensile test results show that when the mold clamping pressure is between 30-60Mpa, the bearing capacity has little effect; when the mold clamping pressure is less than 30Mpa, the bearing capacity is seriously lost.

[0097] Table 10 Tensile test results of different compression mold pressures

[0098]

[0099] For steel core damage, the X-ray image is as follows Fig.14 As shown in Table 11, the tensile test results show that the damage or breakage of the steel core has a great influence on the bearing capacity of the wire clamp.

[0100] Table 11 Tensile test results of steel core damage and fracture

[0101] Cable clamp model Required bearing capacity (kN) Bearing capacity test results (kN) NY-400 / 35 98.48 97.16*、80.28*

[0102] For steel anchor pipe bending, the X-ray image is as follows Fig.15 As shown in Table 12, the tensile test results show that the bending of the steel anchor pipe ≤ 10° has basically no effect on the bearing capacity.

[0103] Table 12 Tensile test results of steel anchor pipe bending

[0104]

[0105] Furthermore, in step S2, according to the breaking bearing capacity obtained from the above-mentioned tensile test, as shown in Table 1-12, the overall strength loss of the strain clamp is calculated, and combined with Table 13, the safety of the strain clamp is evaluated to obtain defect assessment results applicable to 2-groove or 3-groove strain clamps, as shown in Tables 14-15.

[0106] Table 13 Defect level definition table

[0107]

[0108] Table 14 2-groove tension clamp safety assessment table

[0109]

[0110]

[0111] Table 15 Safety evaluation table for 3-groove tension clamps

[0112]

[0113]

[0114] Furthermore, the X-ray image and the safety assessment table of the tension clamp obtained above are used to construct an assessment system. The safety assessment result of the tension clamp to be tested can be obtained by inputting the X-ray image of the tension clamp to be tested into the assessment system.

[0115] The present application also relates to an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement a method for evaluating the safety of a transmission line tension clamp when executing the program.

[0116] The present application also relates to a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is used to implement a method for evaluating the safety of a transmission line tension clamp.

[0117] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for evaluating the safety of a transmission line tension clamp, characterized in that: include S1. Make tension clamps with different defect types to conduct mechanical experiments, obtain the tensile bearing capacity of tension clamps with different defect types, and obtain X-ray images of tension clamps with different defect types through X-rays; S2. Performing a safety assessment on the tension clamp according to the breaking bearing capacity to obtain a safety assessment result of the tension clamp; S3, constructing an evaluation system through the X-ray image and the safety evaluation result; S4, inputting the X-ray image of the tension clamp to be tested into the evaluation system to obtain the safety evaluation result of the tension clamp to be tested; S1 further includes performing wind vibration fatigue tests on tension clamps with different defect types and tension clamp models of different models; The S1 also includes constructing different types of tension clamp models, simulating different defect types to perform mechanical experiments, obtaining the tensile bearing capacity of tension clamps of different types and defect types, and obtaining X-ray images of tension clamps of different types and defect types through X-rays; The method of constructing different types of strain clamp models, simulating different defect types to conduct mechanical experiments, and obtaining the tensile strength of strain clamps of different types and defect types includes: modeling different types of strain clamps through finite element software, simulating the crimping process of different defect types, and obtaining the strain clamps after crimping; conducting mechanical test simulation on the strain clamps after crimping, and obtaining the tensile strength of strain clamps of different types and defect types; The S2 includes: calculating the overall strength loss of the tension clamp according to the breaking bearing capacity, classifying the overall strength loss, and obtaining a safety assessment result of the tension clamp; The overall strength loss of the tension clamp is the ratio of the difference between the rated bearing capacity and the breaking bearing capacity to the rated bearing capacity; The strain clamp has no defects, and the safety assessment result is normal; the strain clamp has defects, and the overall strength loss of the strain clamp is less than 5%, and the safety assessment result is general; the strain clamp has defects, and the overall strength loss of the strain clamp is between 5%-17%, and the safety assessment result is significant; the strain clamp has defects, and the overall strength loss of the strain clamp is more than 17%, and the safety assessment result is urgent.

2. A method for evaluating the safety of a transmission line tension clamp according to claim 1, characterized in that: The different defect types include: insufficient compression in the anti-skid groove, excessive compression in the non-crimped area of ​​the aluminum tube at the anti-skid groove, insufficient insertion depth of the steel core in the steel anchor tube, no compression of the steel core at the steel anchor tube, uneven crimping of the steel anchor tube, unqualified crimping length of the aluminum stranded wire and the aluminum tube, uneven crimping of the aluminum tube at the aluminum stranded wire, excessive compression in the non-crimped area of ​​the aluminum tube at the aluminum stranded wire, mixed crimping, insufficient edge distance, damaged steel core and bent steel anchor tube.

3. 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 program, the processor is used to implement a method for evaluating the safety of a transmission line tension clamp as described in any one of claims 1 to 2.

4. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is used to implement a method for evaluating the safety of a transmission line tension clamp as described in any one of claims 1-2.

Citation Information

Patent Citations

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