CN117848939A - Nondestructive lightning receptor rust detection evaluation method - Google Patents
Nondestructive lightning receptor rust detection evaluation method Download PDFInfo
- Publication number
- CN117848939A CN117848939A CN202410072166.8A CN202410072166A CN117848939A CN 117848939 A CN117848939 A CN 117848939A CN 202410072166 A CN202410072166 A CN 202410072166A CN 117848939 A CN117848939 A CN 117848939A
- Authority
- CN
- China
- Prior art keywords
- rust
- lightning receptor
- corrosion
- selecting
- lightning
- 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
Links
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000011156 evaluation Methods 0.000 title claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 32
- 238000005260 corrosion Methods 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims description 15
- 238000005498 polishing Methods 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 15
- 238000013178 mathematical model Methods 0.000 claims description 14
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000007619 statistical method Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- 244000137852 Petrea volubilis Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000009659 non-destructive testing Methods 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000009956 embroidering Methods 0.000 claims description 3
- 230000001066 destructive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the technical field of lightning protection safety detection, in particular to a nondestructive lightning receptor rust detection evaluation method; removing the rust layer to expose the original metal surface of the lightning receptor; selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust; measuring a section; report writing; by the mode, the method can be suitable for the lightning receptors of different materials, and can provide more accurate corrosion degree evaluation.
Description
Technical Field
The invention relates to the technical field of lightning protection safety detection, in particular to a nondestructive lightning receptor rust detection evaluation method.
Background
In lightning protection systems, the lightning receptor is a vital component, the main function of which is to safely conduct the current to the ground in the event of a lightning strike. The integrity and reliability of the lightning receptor is critical to the safe operation of the overall system. However, the lightning receptor is susceptible to corrosion due to prolonged exposure to the natural environment, which may lead to its failure, thereby increasing the risk of lightning strikes.
The prior art has a plurality of defects in rust detection of the lightning receptor. Conventional methods typically rely on visual inspection and simple physical measurements, which are not only time consuming and labor intensive, but also have limited accuracy, especially in situations where the degree of staining is light or difficult to visually observe. In addition, most of the existing detection methods are not suitable for all types of materials, such as round steel, flat steel, galvanized steel, copper, aluminum, etc., and limit their general applicability.
In view of the above, it is necessary to provide a nondestructive testing and evaluating method for corrosion of a lightning receptor, which is suitable for lightning receptors made of different materials and can provide more accurate evaluation of the degree of corrosion.
Disclosure of Invention
The invention aims to provide a nondestructive corrosion detection and evaluation method for a lightning receptor, which can be suitable for lightning receptors of different materials and can provide more accurate corrosion degree evaluation.
In order to achieve the above object, the present invention provides a nondestructive testing and evaluating method for rust of a lightning receptor, comprising the steps of:
removing the rust layer to expose the original metal surface of the lightning receptor;
selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust;
measuring a section;
report writing.
Wherein, in the step of removing the rust layer to expose the original metal surface of the lightning receptor:
the manner of removing the rust layer includes physical polishing and chemical treatment.
Wherein, in the step of removing the rust layer and exposing the original metal surface of the lightning receptor, the physical polishing mode is as follows:
selecting sand paper and file with proper thickness, and adjusting polishing strength according to the rust degree;
gradually polishing until the metal surface is bright, and simultaneously taking care to avoid causing additional damage to the metal.
Wherein, in the step of removing the rust layer and exposing the original metal surface of the lightning receptor, the chemical treatment method is as follows:
preparing oxalic acid solution, and paying attention to the proportion to avoid corrosion to metal;
in a ventilated and safe environment, soaking the lightning receptor into the solution, and checking the removal condition of the rust layer at regular time;
the receptor is washed and dried.
Wherein, after selecting suitable atomizer according to corrosion area size, large tracts of land corrosion selects electric atomizer, and the step of small tracts of land corrosion selects manual atomizer:
under the safety measures, chemical solvents are uniformly sprayed to the rusted parts, and people are prevented from being hurt by solvent splashing;
and (5) observing the reaction condition of the rust layer, and repeatedly spraying the chemical solvent until the rust layer is completely removed.
Wherein, in the step of section measurement, the measurement process is as follows:
using a high-precision vernier caliper to perform multipoint measurement on each part of the flash memory under sufficient light;
recording the size of each measuring point, and taking the average value as a final measuring result;
recording measurement data by using a lightning protection detection original form;
comparing the dimensional changes before and after the rust, and evaluating the influence of the rust on the performance of the flash device;
creating a mathematical model;
and (3) using a mathematical model, and simultaneously analyzing data by using a statistical method to judge the influence of corrosion on structural integrity.
Wherein, in the step of creating the mathematical model:
the circular cross section is:
the non-circular cross section is:
A corroded ＝W corroded ×T corroded ；
the minimum through-flow cross section requirement is:
wherein, in the step of using a mathematical model and simultaneously analyzing the data using a statistical method to determine the effect of rust on structural integrity:
calculating the cross-sectional area A of the lightning receptor after embroidering corroded ；
Determining minimum through-flow cross-section requirement A minimum ；
If A corroded ≥A min imum The lightning receptor meets the safety requirement;
if A corroded ＜A min imum The lightning receptor is not satisfactory and needs to be replaced for repair.
According to the nondestructive lightning receptor corrosion detection evaluation method, the original metal surface of the lightning receptor is exposed by removing the corrosion layer; selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust; measuring a section; report writing; the method is suitable for the lightning receptors made of different materials, and can provide more accurate corrosion degree assessment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the nondestructive lightning receptor rust detection evaluation method of the present invention.
Fig. 2 is a flow chart of the steps of the physical sanding of the present invention to remove a rust layer.
Fig. 3 is a flow chart of the steps of the chemical process of removing the rust layer of the present invention.
Detailed Description
Referring to fig. 1 to 3, the present invention provides a nondestructive testing and evaluating method for corrosion of a lightning receptor, comprising the following steps:
s1: removing the rust layer to expose the original metal surface of the lightning receptor, wherein the mode of removing the rust layer comprises physical polishing and chemical treatment;
s2: selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust;
s3: under the safety measures, chemical solvents are uniformly sprayed to the rusted parts, and people are prevented from being hurt by solvent splashing;
s4: observing the reaction condition of the rust layer, and repeatedly spraying a chemical solvent until the rust layer is completely removed;
s5: using a high-precision vernier caliper to perform multipoint measurement on each part of the flash memory under sufficient light;
s6: recording the size of each measuring point, and taking the average value as a final measuring result;
s7: recording measurement data by using a lightning protection detection original form;
s8: comparing the dimensional changes before and after the rust, and evaluating the influence of the rust on the performance of the flash device;
s9: creating a mathematical model;
s10: using a mathematical model, and simultaneously analyzing data by using a statistical method to judge the influence of corrosion on structural integrity;
s11: report writing.
In this embodiment, the rust layer is removed first, exposing the original metal surface of the lightning receptor, providing conditions for accurate measurement and evaluation of its structural integrity, and the manner of removing the rust layer includes physical polishing and chemical treatment; then selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust; then under the safety measure, uniformly spraying chemical solvent to the rust position, and taking care of preventing the solvent from splashing to hurt people; then observing the reaction condition of the rust layer, and repeatedly spraying the chemical solvent until the rust layer is completely removed; using a high-precision vernier caliper to perform multipoint measurement on each part of the flash memory under sufficient light; then recording the size of each measuring point, and taking the average value as a final measuring result; then, the lightning protection detection original form is used for recording measurement data, so that subsequent data analysis and archiving are facilitated; comparing the dimensional changes before and after the rust, and evaluating the influence of the rust on the performance of the flash device; creating a mathematical model; using a mathematical model, and simultaneously using statistical methods to analyze data, such as standard deviation (Standard Deviation), coefficient of variation (Coefficient ofVariation), etc., to determine the effect of corrosion on structural integrity; finally, mechanical energy report writing, wherein the report writing process is as follows: writing a report in which the detection process, the tools used, the measurement data and their analysis are specified; providing clear charts and images to intuitively show the rust degree and the measurement result; according to the measurement result, specific maintenance or replacement advice is provided; the method can be suitable for the lightning receptors made of different materials, and can provide more accurate corrosion degree evaluation.
Further, in the step of removing the rust layer to expose the original metal surface of the lightning receptor, the physical polishing is performed by:
s111: selecting sand paper and file with proper thickness, and adjusting polishing strength according to the rust degree;
s112: gradually polishing until the metal surface is bright, and simultaneously taking care to avoid causing additional damage to the metal.
In the embodiment, firstly, sand paper and file with proper thickness are selected, and the polishing strength is adjusted according to the rust degree; and then gradually polishing until the metal surface is bright, while taking care to avoid additional damage to the metal, and providing conditions for accurately measuring and assessing its structural integrity.
Further, in the step of removing the rust layer to expose the original metal surface of the lightning receptor, the chemical treatment is as follows:
s121: preparing oxalic acid solution, and paying attention to the proportion to avoid corrosion to metal;
s122: in a ventilated and safe environment, soaking the lightning receptor into the solution, and checking the removal condition of the rust layer at regular time;
s123: the receptor is washed and dried.
In the embodiment, firstly, oxalic acid solution with proper concentration is prepared, and the proportion is paid attention to so as to avoid corrosion to metal; then, in a ventilated and safe environment, soaking the lightning receptor into the solution for a certain time, and checking the removal condition of the rust layer at regular time; finally, the receptor is cleaned and dried, providing conditions for accurate measurement and evaluation of its structural integrity.
Further, in the step of creating the mathematical model:
the circular cross section is:
the non-circular cross section is:
A corroded ＝W corroded ×T corroded ；
the minimum through-flow cross section requirement is:
wherein A is corroded The cross-sectional area after corrosion represents the actually remaining cross-sectional area of the lightning receptor due to the corrosion; w (W) corroded The diameter after rust is the diameter length measured after rust of a circular section; t (T) corroded The thickness after rusting refers to the thickness measured after rusting of a non-circular section; a is that original Is the original cross-sectional area, referring to the cross-sectional area of the lightning receptor before rust has not occurred; a is that minimum The minimum flow cross-section requirement refers to the minimum cross-sectional area that is required to be reserved for maintaining the function of the lightning receptor.
Further, in the step of using a mathematical model while analyzing the data using statistical methods to determine the effect of rust on structural integrity:
calculating the cross-sectional area A of the lightning receptor after embroidering corroded ；
Determining the minimum passFlow section requirement A min imum ；
If A corroded ≥A min imum The lightning receptor meets the safety requirement;
if A corroded ＜A min imum The lightning receptor is not satisfactory and needs to be replaced for repair.
In the present embodiment, first, the cross-sectional area A after the lightning receptor is embroidered is calculated corroded The method comprises the steps of carrying out a first treatment on the surface of the Then determining the minimum through-flow cross-section requirement A min imum The method comprises the steps of carrying out a first treatment on the surface of the If A corroded ≥A min imum The lightning receptor meets the safety requirement; if A corroded ＜A min imum The lightning receptor is not satisfactory and needs to be replaced for repair.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (8)
1. A method for detecting and evaluating corrosion of a nondestructive lightning receptor, comprising the steps of:
removing the rust layer to expose the original metal surface of the lightning receptor;
selecting a proper sprayer according to the size of the rust area, selecting an electric sprayer by large-area rust and selecting a manual sprayer by small-area rust;
measuring a section;
report writing.
2. The method of claim 1, wherein in the step of removing the rust layer to expose the original metal surface of the lightning receptor:
the manner of removing the rust layer includes physical polishing and chemical treatment.
3. The method of claim 2, wherein in the step of removing the rust layer to expose the original metal surface of the lightning receptor, the physical polishing is performed by:
selecting sand paper and file with proper thickness, and adjusting polishing strength according to the rust degree;
gradually polishing until the metal surface is bright, and simultaneously taking care to avoid causing additional damage to the metal.
4. The method of claim 2, wherein in the step of removing the rust layer to expose the original metal surface of the lightning receptor, the chemical treatment is performed by:
preparing oxalic acid solution, and paying attention to the proportion to avoid corrosion to metal;
in a ventilated and safe environment, soaking the lightning receptor into the solution, and checking the removal condition of the rust layer at regular time;
the receptor is washed and dried.
5. The nondestructive lightning receptor corrosion detection evaluation method of claim 1 wherein after the step of selecting a suitable sprayer based on the size of the corrosion area, selecting a large area corrosion to be an electric sprayer, and selecting a small area corrosion to be a manual sprayer:
under the safety measures, chemical solvents are uniformly sprayed to the rusted parts, and people are prevented from being hurt by solvent splashing;
and (5) observing the reaction condition of the rust layer, and repeatedly spraying the chemical solvent until the rust layer is completely removed.
6. The nondestructive testing and evaluation method of corrosion by a lightning receiver of claim 1, wherein in the step of measuring the cross section, the measuring process is:
using a high-precision vernier caliper to perform multipoint measurement on each part of the flash memory under sufficient light;
recording the size of each measuring point, and taking the average value as a final measuring result;
recording measurement data by using a lightning protection detection original form;
comparing the dimensional changes before and after the rust, and evaluating the influence of the rust on the performance of the flash device;
creating a mathematical model;
and (3) using a mathematical model, and simultaneously analyzing data by using a statistical method to judge the influence of corrosion on structural integrity.
7. The non-destructive lightning receptor corrosion detection evaluation method of claim 6, wherein in the step of creating the mathematical model:
the circular cross section is:
the non-circular cross section is:
A corroded ＝W corroded ×T corroded ；
the minimum through-flow cross section requirement is:
8. the method of claim 7, wherein in the step of determining the effect of corrosion on structural integrity using a mathematical model while analyzing the data using statistical methods:
calculating the cross-sectional area A of the lightning receptor after embroidering corroded ；
Determining minimum through-flow cross-section requirement A minimum ；
If A corroded ≥A minimum The lightning receptor meets the safety requirement;
if A corroded ＜A minimum The lightning receptor is not satisfactory and needs to be replaced for repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410072166.8A CN117848939A (en) | 2024-01-17 | 2024-01-17 | Nondestructive lightning receptor rust detection evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410072166.8A CN117848939A (en) | 2024-01-17 | 2024-01-17 | Nondestructive lightning receptor rust detection evaluation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117848939A true CN117848939A (en) | 2024-04-09 |
Family
ID=90547365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410072166.8A Pending CN117848939A (en) | 2024-01-17 | 2024-01-17 | Nondestructive lightning receptor rust detection evaluation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117848939A (en) |
-
2024
- 2024-01-17 CN CN202410072166.8A patent/CN117848939A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2001215187A (en) | Method and apparatus for diagnosing deterioration | |
| EP2176655A1 (en) | Process for the destruction-free testing of pipes | |
| CN106290133A (en) | A kind of image measuring method evaluating oil pipe Pitting corrosion behavior | |
| CN116148163A (en) | Pipeline inner wall corrosion state evaluation method and system | |
| US20130104659A1 (en) | Method for Non-Destructive Testing | |
| CN117848939A (en) | Nondestructive lightning receptor rust detection evaluation method | |
| Nakamoto et al. | Reliability assessment for thickness inspection of pipe wall using probability of detection | |
| CN115166034A (en) | Method for detecting wood structure defects by utilizing multipath stress waves | |
| US20170052151A1 (en) | Systems and Methods for Non-Destructive Parts Testing | |
| Bohari et al. | Accuracy assessment of detecting cracks on concrete wall at different distances using unmanned autonomous vehicle (UAV) images | |
| Cegla | Manual UT vs permanently installed sensors | |
| Safizadeh et al. | The effect of flaw size distribution on the estimation of POD | |
| Zhang et al. | 3D Laser Scanning for Thickness Measurements of Hull Structures | |
| RU2498263C1 (en) | Method for detection of microcracks in metal | |
| Merten et al. | Validation of coated infrastructure examination by electrochemical impedance spectroscopy | |
| Kosenko et al. | Recognition of underframe corrosion of automobile bodies using infrared themography methods | |
| Allen | Electronic Inspection of a Field Painting Project | |
| Raczkiewicz et al. | Recognizing the temperature effect on the measurements results of the corrosion risk of plain and stainless reinforcement by the galvanostatic method | |
| Singh et al. | Eddy current measurement system evaluation for corrosion depth determination on cast aluminum aircraft structure | |
| JPH10313034A (en) | Method for diagnosing deterioration and life of electronic device and device therefor | |
| CN117592820B (en) | Bridge damage disease intelligent recognition system based on computer data analysis | |
| Ikeda et al. | Reliability analysis of pipe wall thinning basd on quantification of ultrasonic testing | |
| JP7244022B2 (en) | Evaluation method of load-bearing performance of concrete structures | |
| Bartels et al. | Measurement Uncertainty In Structural Health Monitoring Systems Under Temperature Influence | |
| CN118777187A (en) | Corrosion resistance testing method for steel wire rope for production and processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |