CN117330488A - Device and method for evaluating scaling and corrosion of industrial circulating cooling water system - Google Patents
Device and method for evaluating scaling and corrosion of industrial circulating cooling water system Download PDFInfo
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- CN117330488A CN117330488A CN202210736422.XA CN202210736422A CN117330488A CN 117330488 A CN117330488 A CN 117330488A CN 202210736422 A CN202210736422 A CN 202210736422A CN 117330488 A CN117330488 A CN 117330488A
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Abstract
The invention relates to the field of evaluation of safe and stable operation of an industrial circulating water system, and discloses a device for evaluating scaling and corrosion of an industrial circulating cooling water system, which comprises the following components: a first circulation loop system; the second circulation loop system, the loading plate, run through the said loading plate up and down and have through holes used for placing the test block, through said loading plate and test block, cut off said first circulation pipeline and second circulation pipeline; an auxiliary electrode and a reference electrode are arranged on the first circulating pipeline; an electrochemical workstation. The invention also discloses a test method for scaling and corrosion of the industrial circulating cooling water system. The invention simulates the corrosion environment under the simultaneous contact of two different types of temperature media, and realizes the test method of the deposition of the scale on the metal surface with the temperature difference in the longitudinal direction.
Description
Technical Field
The invention relates to the field of evaluation of safe and stable operation of an industrial circulating water system, in particular to a device and a method for evaluating scaling and corrosion of an industrial circulating cooling water system.
Background
Industrial circulating cooling water system is an important component in many industrial production devices, and stable operation is a precondition for ensuring safe and stable operation of the devices. Scaling and corrosion are one of the challenges for safe and stable operation of the circulating water system due to the special water quality, oxygen exposure and other factors.
In order to ensure safe and stable operation of the circulating water system, methods such as water quality regulation and control, corrosion inhibition and scale inhibition medicament filling and the like are generally needed to be adopted for scale inhibition and corrosion control. Before practical industrial application on site, the corrosion control technology and the scale inhibitor are often required to be screened and evaluated in a laboratory.
The standard GB/T-18175 prescribes a method for measuring corrosion inhibition performance of a water treatment agent by a rotary hanging piece method, and the method simulates the flowing condition of circulating water in a pipeline by a hanging piece rotating method, and the standard prescribes that the testing period is 72 hours. The method is the longest history and the most widely applied method in the circulating water field at present. The traditional method has the advantages, but cannot be ignored, the problems of time consumption and inaccurate working condition simulation exist, particularly the flowing working condition of circulating water in a pipeline cannot be accurately simulated, the working condition environment of a heat transfer interface such as a heat exchanger cannot be simulated, and a certain difference exists between an evaluation result and an actual working condition.
Standard GB/T-16632 specifies a method for testing the scale inhibition of scale inhibitors, which evaluates the scale inhibition by measuring the change in the concentration of calcium ions in a solution by means of a static thermostatic water bath. The method is widely applied at present, but can only be used for transverse comparison of the performances of different water treatment agent products, and can not accurately simulate the scaling condition of the metal surface in the heat exchanger. In practical engineering application, the deposition of scale on the metal surface is also related to the flow rate of circulating water, the material quality of the metal, the roughness and other parameters.
Thus, the prior art suffers from at least the following problems:
1) In terms of corrosion evaluation, the method lacks of accurately simulating the corrosion environment under the simultaneous contact of two different types of media with different temperatures and different flow rates;
2) In terms of scale inhibition evaluation, a real-time evaluation method for scale deposition on a metal surface with a longitudinal temperature difference is lacking;
3) Lack of a device and a method for simultaneously and accurately evaluating the corrosion and the scale inhibition;
disclosure of Invention
The invention provides a device and a method for scaling and corrosion evaluation of an industrial circulating cooling water system, which are used for designing a circulating loop laboratory simulation device aiming at the hydraulic condition of a circulating cooling water system pipeline and the special working condition characteristics of heat exchange equipment, realizing accurate simulation of the environment of the working conditions of the circulating water corrosion and scaling, and solving the limitation that the existing traditional hanging method and the scale inhibition evaluation method can not accurately simulate the working condition of the circulating cooling water.
The invention is realized by the following technical scheme:
an apparatus for scale and corrosion evaluation of an industrial circulating cooling water system, comprising:
the first circulation loop system comprises a process medium tank, a first circulation pump and a first temperature sensor which are communicated through a first circulation pipeline, wherein a first temperature control device is arranged in the process medium tank;
the second circulation loop system comprises a water tank, a second circulation pump and a second temperature sensor which are communicated through a second circulation pipeline;
the bearing plate is arranged between the first circulating pipeline and the second circulating pipeline, one surface of the bearing plate is in contact with the inside of the first circulating pipeline, the other opposite surface of the bearing plate is in contact with the inside of the second circulating pipeline, a through hole for placing a test piece is formed in the bearing plate in an up-down penetrating mode, a wire can be fixedly connected to one side of the test piece, which is located on the first circulating pipeline, the outer side wall of the wire, which is located on the first circulating pipeline, is provided with a coating, and one end, far away from the test piece, of the wire penetrates through the side wall of the first circulating pipeline; the first circulating pipeline and the second circulating pipeline are separated through the bearing plate and the test piece;
when the test piece is fixedly connected with a lead, an auxiliary electrode and a reference electrode are arranged on the first circulating pipeline;
and the electrochemical working station is respectively and electrically connected with the first circulation loop system, the second circulation loop system, the lead, the reference electrode and the auxiliary electrode.
As an optimization, the flowing direction of the liquid in the first circulating pipeline and the flowing direction of the liquid in the second circulating pipeline are both clockwise or anticlockwise at the same time.
As optimization, a first notch is formed in the side wall of one section of the first circulating pipeline, the bearing plate is arranged at the first notch, and the length and the width of the bearing plate are larger than those of the first notch; the side wall of one section of the second circulating pipeline is provided with a second notch, the bearing plate is arranged at the second notch, and the length and the width of the bearing plate are both greater than those of the second notch.
As optimization, a plurality of supporting rods penetrate through the bearing plate from top to bottom, one end of each supporting rod is fixedly connected with the side wall of the first circulating pipeline, and the other end of the bearing plate is fixedly connected with the side wall of the second circulating pipeline.
Preferably, the cross section of the through hole is in a shape with a big top and a small bottom.
As optimization, a high-speed small-sized microscopic camera is arranged in the through hole.
As optimization, a first switch valve is arranged on the first circulating pipeline, and a second switch valve is arranged on the second circulating pipeline.
As optimization, the process medium in the process medium tank is the process medium of a natural gas purification plant, and can be specifically alcohol amine or triethylene glycol and other process media of the natural gas purification plant.
As optimization, the side walls of the support rods positioned on the outer sides of the first circulating pipeline and the second circulating pipeline are provided with external threads.
The test method for the scale formation and corrosion evaluation device of the industrial circulating cooling water system based on the above comprises the following steps:
s1, fixing two sides of a bearing plate at a first notch of a first circulating pipeline and a second notch of a second circulating pipeline respectively, so that the bearing plate completely blocks the first notch and the second notch;
s2, enabling a plurality of support rods to pass through the holes of the side wall of the first circulation pipeline and the corresponding holes of the side wall of the second circulation pipeline respectively, and then sleeving nuts on the end parts of the support rods, which are positioned outside the first circulation pipeline and the second circulation pipeline, in a threaded manner;
s3, installing a working electrode, a reference electrode and an auxiliary electrode;
s4, respectively injecting corresponding liquid into the process medium tank and the water tank, and opening a first temperature control device to control the temperature of the liquid in the process medium tank;
s5, opening the first circulating pump and the second circulating pump to enable the process medium and the process medium to flow in the first circulating pipeline and the second circulating pipeline respectively;
s6, opening an electrochemical workstation and a high-speed microscopic camera, and further performing electrochemical testing and microscopic morphology and dimension observation on the test piece;
s7, observing the growth and change conditions of corrosion products on the metal surface by the high-speed microscope lens;
s8, the high-speed microscopic camera can monitor the microscopic morphology of the scale on the metal surface and the thickness change condition of the scale, and is used for evaluating the scale formation tendency of the evaluation system.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention simulates the corrosion environment under the condition that two different types of temperature media are simultaneously contacted, realizes the test method of the deposition of the scale on the metal surface with the temperature difference in the longitudinal direction, simultaneously tests the corrosion and the scale, and realizes the corrosion and the scale test under the condition of different temperature differences.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic view of an apparatus for scale formation and corrosion evaluation of an industrial circulating cooling water system (through-hole test piece) according to the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1A;
FIG. 3 is a schematic structural diagram of an apparatus for scaling and corrosion evaluation of an industrial circulating cooling water system (through hole working electrode (test piece and wire combined structure));
fig. 4 is an enlarged schematic view of B in fig. 3.
In the drawings, the reference numerals and corresponding part names:
the device comprises a 1-first circulation pipeline, a 1 a-process medium tank, a 1 b-first temperature control device, a 1 c-first circulation pump, a 1 d-first temperature sensor, a 1 e-first switch valve, a 2-second circulation pipeline, a 2 a-water tank, a 2 b-refrigeration rod, a 2 c-second circulation pump, a 2 d-second temperature sensor, a 2 e-second switch valve, a 3-bearing plate, a 3 a-through hole, a 4-test piece, a 5-support rod, a 6-high-speed small-sized camera, a 7 a-wire, a 7 b-reference electrode and a 7 c-auxiliary electrode.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
As shown in fig. 1-4, an apparatus for scale and corrosion evaluation of an industrial circulating cooling water system, comprising:
the first circulation loop system comprises a process medium tank 1a, a first circulation pump 1c and a first temperature sensor 1d which are communicated through a first circulation pipeline 1, wherein a first temperature control device 1b is arranged in the process medium tank 1 a. In this embodiment, the process medium in the process medium tank 1a is a process medium of a natural gas purification plant, and may specifically be a process medium of a natural gas purification plant such as alcohol amine or triethylene glycol. The alcohol amine is MDEA, also called methyldiethanolamine, and is colorless or yellowish viscous liquid, and is mainly used for desulfurizing and purifying natural gas. The alcohol amine is used as a process medium to carry out corrosion test on the test piece 4, the first temperature control device 1b is used for heating the process medium to enable the process medium to have a certain temperature, the first temperature sensor 1d is used for detecting the temperature of liquid in the first circulating pipeline 1 in real time, and specifically, the first temperature control device 1b can be a heating rod.
The second circulation loop system includes a water tank 2a, a second circulation pump 2c, and a second temperature sensor 2d, which are communicated through a second circulation line 2. In this embodiment, the water in the water tank 2a is industrial water. Through the second circulating pump 2c, the industrial water flows on the second circulating pipeline 2, the second temperature sensor 2d is used for detecting the temperature of the liquid in the second circulating pipeline 2 in real time, specifically, through the heating of the first temperature control device 1b, the temperature of the liquid in the two circulating loops can be different, so that the two surfaces of the test piece 4 form a temperature difference, and the corrosion environment of the tube bundle in the heat exchanger is simulated. In this embodiment, the first circulation pipeline 1 is provided with a first switch valve 1e, and the second circulation pipeline 2 is provided with a second switch valve 2e. By providing the first and second on-off valves 1e and 2e, it is possible to better control whether or not the liquid in the first and second circulation circuit lines 2 flows, and when the test is finished, the first and second on-off valves 1e and 2e can be closed to stop the flow of the liquid in the first and second circulation circuit lines 2. The cooling water is generally not heated and is used for cooling the process medium in the first circulation loop system, so that a temperature control device is not arranged in the second circulation loop system, and certainly, in order to reduce the temperature of the cooling water better and quickly, a refrigerating rod 2b can be added in the water tank to reduce the temperature of the cooling water in the second circulation loop system.
The bearing plate 3 is arranged between the first circulating pipeline 1 and the second circulating pipeline 2, one surface of the bearing plate 3 is in contact with the interior of the first circulating pipeline 1, the other surface of the bearing plate 3 is in contact with the interior of the second circulating pipeline 2, a through hole 3a for placing a test piece 4 or the test piece 4 is formed in the upper and lower penetrating mode of the bearing plate 3, a wire 7a can be fixedly connected to one side of the test piece 4, which is located on the first circulating pipeline, a coating is arranged on the outer side wall of the wire 7a of the first circulating pipeline, and one end, far away from the test piece, of the wire penetrates through the side wall of the first circulating pipeline; the first circulation pipeline 1 and the second circulation pipeline 2 are separated through the bearing plate 3 and the test piece 4; the wire and the test piece are welded together, when the test piece is connected with the wire, the test piece and the wire form a working electrode, and the side wall of the wire positioned in the first circulation pipeline is provided with a coating, so that the wire can be prevented from being contacted with a process medium in the first circulation pipeline.
When the test piece is fixedly connected with a lead 7a, an auxiliary electrode 7c and a reference electrode 7b are arranged on the first circulating pipeline 1;
and the electrochemical working station is respectively and electrically connected with the first circulation loop system, the second circulation loop system, a lead 7a penetrating through and extending out of the side wall of the first circulation pipeline, a reference electrode 7b and an auxiliary electrode 7 c.
In this embodiment, the flow direction of the liquid in the first circulation line 1 and the flow direction of the liquid in the second circulation line 2 are both clockwise or counterclockwise.
In this embodiment, a first notch is provided on a side wall of one section of the first circulation pipeline 1, the bearing plate 3 is disposed at the first notch, and the length and the width of the bearing plate 3 are both greater than those of the first notch; the side wall of one section of the second circulation pipeline 2 is provided with a second notch, the bearing plate 3 is arranged at the second notch, and the length and the width of the bearing plate 3 are both greater than those of the second notch. Meanwhile, a plurality of support rods 5 penetrate through the bearing plate 3 from top to bottom, one ends of the support rods 5 are fixedly connected with the side wall of the first circulating pipeline 1, and the other ends of the bearing plate 3 are fixedly connected with the side wall of the second circulating pipeline 2. The side walls of the supporting rods 5 positioned on the outer sides of the first circulating pipeline 1 and the second circulating pipeline 2 are provided with external threads, and after the supporting rods 5 are arranged in place, nuts are arranged at the two ends of the supporting rods, so that the supporting rods 5 are fixedly connected with the first circulating pipeline 1 and the second circulating pipeline 2.
In this embodiment, the cross section of the through hole 3a is in a shape with a large upper part and a small lower part. Specifically, the shape of the through hole 3a may be a truncated cone shape with a large upper part and a small lower part, and the cross section of the through hole 3a may be an inverted "convex" shape. In this way, the test piece 4 can be better fixed, and the test piece is fixedly connected with the bearing plate through the bolts after being placed in the through holes. In this embodiment, the through hole 3a is provided with a high-speed small-sized micro-camera 6, and the high-speed small-sized micro-camera 6 is a conventional model in the market.
Specifically, the high-speed small-sized camera 6 can be embedded on the side wall of the through hole 3a, the lens of the high-speed small-sized camera 6 is obliquely arranged downwards, meanwhile, the high-speed small-sized camera 6 can shoot the situation in the through hole 3a, after the test piece 4 is installed in the through hole 3a, the height of the upper surface of the test piece 4 is lower than that of the high-speed small-sized micro-camera 6, so that the high-speed small-sized micro-camera 6 can clearly shoot the situation of the upper surface of the test piece 4 when testing work is carried out, and in order to prevent water from entering the high-speed small-sized micro-sized camera 6, a waterproof film is smeared on the surface of the high-speed small-sized micro-sized camera 6.
Example 2
The test method for the scale formation and corrosion evaluation device of the industrial circulating cooling water system based on the above comprises the following steps:
s1, fixing two sides of a bearing plate at a first notch of a first circulating pipeline and a second notch of a second circulating pipeline respectively, so that the bearing plate completely blocks the first notch and the second notch; here, can carry out the shutoff with loading board to first breach and second breach through current technique, for example, smear waterproof anticorrosion in the outside of first breach and second breach, then paste the both sides of loading board respectively in first breach and second breach department, because the loading board size is bigger than first breach and second breach, the loading board can be well with first breach and second breach shutoff, prevents in carrying out test work, and liquid flows through first breach or second breach.
S2, enabling a plurality of supporting rods to respectively penetrate through the holes of the side walls of the first circulating pipeline and the corresponding holes of the side walls of the second circulating pipeline, and then enabling the supporting rods to be located at the end portions of the outer sides of the first circulating pipeline and the second circulating pipeline to be in threaded sleeve connection with nuts. Through setting up the bracing piece, can be located the first circulating pipe section and the second circulating pipe section of loading board and support, owing to set up reference electrode and auxiliary electrode in the lateral wall on this first circulating pipe section moreover, through setting up the bracing piece, can prevent well that reference electrode and auxiliary electrode that are located the inside of first circulating pipe line from contacting with the test block. Meanwhile, in order to prevent the liquid from flowing out through the contact position of the support rod with the first and second circulation pipes during the test work, an insulating sealing structure, such as an insulating sealing ring, is provided at the contact position thereof.
S3, installing a working electrode, a reference electrode and an auxiliary electrode; the reference electrode and the auxiliary electrode are formed by extending the pipe wall into the liquid, and the working electrode with the insulating sealing structure is formed by a wire and a test piece, so that one end of the wire penetrates through the side wall of the first circulation pipeline to be connected with the test piece (the wire can be opened on the side wall of the first circulation pipeline in advance, the wire can also be fixedly welded with the test piece in advance in S1, then when the test piece is placed on the bearing plate, the wire penetrates through the hole on the bearing plate and then penetrates through and extends out of the side wall of the first circulation pipeline), the other end of the wire extends out of the first circulation pipeline to be electrically connected with the electrochemical workstation, and the connecting position of the wire and the first circulation pipeline is also provided with the insulating sealing structure, and the electrochemical workstation is also correspondingly electrically connected with other equipment.
S4, respectively injecting corresponding liquid into the process medium tank and the water tank, and opening a first temperature control device to heat the liquid in the process medium tank;
s5, opening the first circulating pump and the second circulating pump to enable the process medium and the process medium to flow in the first circulating pipeline and the second circulating pipeline respectively;
s6, opening an electrochemical workstation and a high-speed microscopic camera, performing electrochemical testing on the test piece, and finally performing detection analysis and microscopic morphology size observation on corrosion and scaling of two sides of the test piece under the condition of temperature difference through the electrochemical workstation;
s7, observing the growth and change conditions of corrosion products on the metal surface by the high-speed microscope lens;
s8, the high-speed microscopic camera can monitor the microscopic morphology of the scale on the metal surface and the thickness change condition of the scale, and is used for evaluating the scale formation tendency of the evaluation system.
The invention is not only that the process medium corrodes the test piece, but also that the condition of corrosion is checked under the condition that one side of the test piece is circulating water and the other side is circulating process medium, the media at two sides are different, the temperature is different, and the flow rate is different, which is the special point of the invention, namely that one metal is influenced by two corrosion environments.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. An apparatus for scale and corrosion evaluation of an industrial circulating cooling water system, comprising:
the first circulation loop system comprises a process medium tank, a first circulation pump and a first temperature sensor which are communicated through a first circulation pipeline, and a first temperature control device is arranged in the process medium tank;
the second circulation loop system comprises a water tank, a second circulation pump and a second temperature sensor which are communicated through a second circulation pipeline;
the bearing plate is arranged between the first circulating pipeline and the second circulating pipeline, one surface of the bearing plate is in contact with the inside of the first circulating pipeline, the other opposite surface of the bearing plate is in contact with the inside of the second circulating pipeline, a through hole for placing a test piece is formed in the bearing plate in an up-down penetrating mode, a wire can be fixedly connected to one side of the test piece, which is located on the first circulating pipeline, the outer side wall of the wire, which is located on the first circulating pipeline, is provided with a coating, and one end, far away from the test piece, of the wire penetrates through the side wall of the first circulating pipeline; the first circulating pipeline and the second circulating pipeline are separated through the bearing plate and the test piece;
when the test piece is fixedly connected with a lead, an auxiliary electrode and a reference electrode are arranged on the first circulating pipeline;
and the electrochemical working station is respectively and electrically connected with the first circulation loop system, the second circulation loop system, the lead, the reference electrode and the auxiliary electrode.
2. The apparatus for scale formation and corrosion evaluation of an industrial circulating cooling water system according to claim 1, wherein the flow direction of the liquid in the first circulating line and the flow direction of the liquid in the second circulating line are both clockwise or counterclockwise at the same time.
3. The device for evaluating the scaling and corrosion of the industrial circulating cooling water system according to claim 1, wherein a first notch is formed in the side wall of one section of the first circulating pipeline, the bearing plate is arranged at the first notch, and the length and the width of the bearing plate are larger than those of the first notch; the side wall of one section of the second circulating pipeline is provided with a second notch, the bearing plate is arranged at the second notch, and the length and the width of the bearing plate are both greater than those of the second notch.
4. The device for scaling and corrosion evaluation of industrial circulating cooling water system according to claim 3, wherein a plurality of support rods are arranged to penetrate through the bearing plate up and down, one end of each support rod is fixedly connected with the side wall of the first circulating pipeline, and the other end of each bearing plate is fixedly connected with the side wall of the second circulating pipeline.
5. The apparatus for scale formation and corrosion evaluation of an industrial circulating cooling water system according to claim 1, wherein the cross section of the through hole is in a shape with a large upper part and a small lower part.
6. The apparatus for scale and corrosion evaluation of an industrial circulating cooling water system according to claim 1, wherein a high-speed microscopic camera is installed in the through hole.
7. The device for scale formation and corrosion evaluation of an industrial circulating cooling water system according to claim 1, wherein the first circulating pipeline is provided with a first switching valve, and the second circulating pipeline is provided with a second switching valve.
8. The apparatus for scale and corrosion evaluation of an industrial circulating cooling water system of claim 1, wherein the process medium in the process medium tank is a process medium of a natural gas purification plant.
9. The apparatus for scale and corrosion evaluation of an industrial circulating cooling water system according to claim 4, wherein the side walls of the support bars located outside the first circulating line and the second circulating line are provided with external threads.
10. A test method for an industrial circulating cooling water system scaling and corrosion evaluation apparatus according to any one of claims 1 to 9, characterized by comprising the steps of:
s1, fixing two sides of a bearing plate at a first notch of a first circulating pipeline and a second notch of a second circulating pipeline respectively, so that the bearing plate completely blocks the first notch and the second notch;
s2, enabling a plurality of support rods to pass through the holes of the side wall of the first circulation pipeline and the corresponding holes of the side wall of the second circulation pipeline respectively, and then sleeving nuts on the end parts of the support rods, which are positioned outside the first circulation pipeline and the second circulation pipeline, in a threaded manner;
s3, installing a working electrode, a reference electrode and an auxiliary electrode;
s4, respectively injecting corresponding liquid into the process medium tank and the water tank, and opening a first temperature control device to control the temperature of the liquid in the process medium tank;
s5, opening the first circulating pump and the second circulating pump to enable the process medium and the process medium to flow in the first circulating pipeline and the second circulating pipeline respectively;
s6, opening an electrochemical workstation and a high-speed microscopic camera, and further performing electrochemical testing and microscopic morphology and dimension observation on the test piece;
s7, observing the growth and change conditions of corrosion products on the metal surface by the high-speed microscope lens;
s8, the high-speed microscopic camera can monitor the microscopic morphology of the scale on the metal surface and the thickness change condition of the scale, and is used for evaluating the scale formation tendency of the evaluation system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210736422.XA CN117330488A (en) | 2022-06-27 | 2022-06-27 | Device and method for evaluating scaling and corrosion of industrial circulating cooling water system |
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| CN202210736422.XA CN117330488A (en) | 2022-06-27 | 2022-06-27 | Device and method for evaluating scaling and corrosion of industrial circulating cooling water system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118150458A (en) * | 2024-03-18 | 2024-06-07 | 国网江苏省电力有限公司无锡供电分公司 | An experimental device and method for evaluating the internal corrosion behavior of steel pipe poles in power transmission lines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118150458A (en) * | 2024-03-18 | 2024-06-07 | 国网江苏省电力有限公司无锡供电分公司 | An experimental device and method for evaluating the internal corrosion behavior of steel pipe poles in power transmission lines |
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