Resistance-type large-area coating degradation monitoring device

Abstract

The utility model discloses a resistance-type large-area coating degradation monitoring device, which belongs to the technical field of ocean engineering corrosion monitoring and comprises at least three resistance probes. The resistance tester is respectively connected with each resistance probe through a lead, and the resistance tester is used for testing the resistance value of the coating between different resistance probes; the insulation film is connected with the resistance probe, and the resistance probe is connected with the base body through the insulation film. The method comprises the following steps: respectively polishing and flattening each site, pasting an insulating film, installing a resistance probe on the insulating film, recording a number, testing coating resistance values between different resistance probes through a resistance tester under reasonable spatial distribution of the resistance probes, drawing a curve graph of the resistance values changing along with time according to resistance changes of the coating in a two-dimensional direction, therefore, the long-term performance degradation evolution rule of the large-area coating material is effectively monitored, and the safe operation of the engineering coating in the service period is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering corrosion monitoring, in particular to a resistive large-area coating degradation monitoring device. Background Art

[0002] Under the long-term action of high ultraviolet radiation, high temperature, high humidity, high salt in the marine environment and stress, the coating is prone to degradation and damage during the service period, resulting in the penetration of corrosive media in the atmosphere along the degraded area, inducing local corrosion of the steel structure. Moreover, the accumulation of corrosion products will further cause the coating to peel off and aggravate the corrosion of the steel structure, seriously affecting the service life of the steel structure.

[0003] At present, the detection of steel structure coatings mainly relies on manual visual inspection and drone patrol. This method can only distinguish the quality of the coating by the rust marks generated after corrosion occurs. However, often at this time, the steel structure has already shown serious local corrosion or even perforation. Therefore, it is impossible to detect and distinguish the coating in the early stage of degradation and when there are minor damages in a timely manner. In the prior art, traditional electrochemical impedance technology is widely used in coating monitoring. However, the monitoring technology mainly focuses on single-point monitoring of the coating thickness direction index, and it is impossible to conduct large-area monitoring. The measured data has poor representativeness and low credibility. Summary of the Utility Model

[0004] An object of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a resistive large-area coating degradation monitoring device, which can timely diagnose coating degradation to adopt effective repair strategies and ensure the normal service of the steel structure coating.

[0005] The resistive large-area coating degradation monitoring device according to an embodiment of the utility model includes at least three resistance probes; a resistance tester, which is connected to each resistance probe through wires respectively, and the resistance tester is used to test the coating resistance values between different resistance probes; an insulating film, which is connected to the resistance probe, and the resistance probe is connected to the substrate through the insulating film.

[0006] The resistive large-area coating degradation monitoring device according to an embodiment of the utility model has at least the following beneficial effects: After grinding each site flat and pasting the insulating film, install the resistance probe on the insulating film and record the number. Under the reasonable distribution of the resistance probe space, test the coating resistance values between different resistance probes through the resistance tester, and draw a curve of the resistance value changing with time according to the resistance change of the coating in the two-dimensional direction, so as to effectively monitor the long-term performance degradation evolution law of the large-area coating material and ensure the safe operation of the engineering coating during the service period.

[0007] According to some embodiments of the utility model, the resistance probe is made of inert metal material.

[0008] According to some embodiments of the present utility model, the resistance probe is made of titanium alloy.

[0009] According to some embodiments of the present utility model, the resistance probe has a polygonal structure.

[0010] According to some embodiments of the present utility model, the resistance probe has a hexagonal structure.

[0011] According to some embodiments of the present utility model, the thickness of the resistance probe is from 1 mm to 3 mm.

[0012] According to some embodiments of the present utility model, all the resistance probes are evenly distributed around the resistance tester, and the distance between two adjacent resistance probes is equal.

[0013] According to some embodiments of the present utility model, each resistance probe is connected to the corresponding wire by spot welding.

[0014] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 is a side view of a resistive large-area coating deterioration monitoring device according to some specific embodiments of the present utility model;

[0017] Figure 2 is Figure 1 the top view in

[0018] Reference numerals:

[0019] Resistance probe 100;

[0020] Resistance tester 200;

[0021] Insulating film 300;

[0022] Wire 10, substrate 20, coating material 30. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understanding such as "greater than", "less than", "exceeding", etc. does not include the present number, and understanding such as "above", "below", "within", etc. includes the present number. If there is a description of "first time", "second time", etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0026] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0027] Refer to Figures 1 to 2 Describe a resistive large-area coating deterioration monitoring device according to an embodiment of the present utility model.

[0028] As Figures 1 to 2 As shown, the resistive large-area coating deterioration monitoring device includes at least three resistance probes 100; a resistance tester 200, and the resistance tester 200 is respectively connected to each resistance probe 100 through a wire 10. The resistance tester 200 is used to test the resistance value of the coating 30 between different resistance probes 100; an insulating film 300, and the insulating film 300 is connected to the resistance probe 100, and the resistance probe 100 is connected to the substrate 20 through the insulating film 300.

[0029] After each site is polished flat respectively, paste the insulating film 300, install the resistance probe 100 on the insulating film 300 and record the number. Under the reasonable distribution of the space of the resistance probe 100, test the resistance value of the coating 30 between different resistance probes 100 through the resistance tester 200, and draw a curve graph of the resistance value changing with time according to the resistance change of the coating 30 in the two-dimensional direction, so as to effectively monitor the long-term performance deterioration evolution law of the large-area coating 30 material and ensure the safe operation of the engineering coating 30 during the service period.

[0030] It should be noted that the anti-corrosion performance of the coating 30 is related to the resistance value of the coating 30 itself. The higher the resistance value, the better the performance. When the coating 30 is exposed to sunlight, wind, rain, especially salt spray erosion in the marine environment, the aging of the coating 30 can be directly reflected in the resistance value of the coating 30. Then, when the resistance value of the coating 30 decreases, it indicates that the coating 30 begins to age. Specifically, as Figure 2 shown, by respectively testing the resistance value of the coating 30 between two adjacent resistance probes 100, and conducting long-term tests and plotting them into curves, the aging situation of the large-area coating 30 between the three probes can be known. When there is aging or damage to the coating 30, the resistance value of the coating 30 will decrease.

[0031] In some specific embodiments of the present invention, the resistance probe 100 is made of inert metal material. It should be noted that inert metals have good stability and chemical inertness. Therefore, to improve the stability and corrosion resistance of the resistance probe 100, these materials are selected when manufacturing the resistance probe 100 to ensure the long-term stability and reliability of the probe under different environmental conditions.

[0032] In some specific embodiments of the present invention, the resistance probe 100 is made of titanium alloy material.

[0033] In some specific embodiments of the present invention, the resistance probe 100 has a polygonal structure.

[0034] In some specific embodiments of the present invention, the resistance probe 100 has a hexagonal structure.

[0035] It should be noted that compared with polygonal structures such as triangles, quadrilaterals, and pentagons, the hexagonal structure benefits from its symmetry and angle distribution, enabling each individual resistance probe 100 to correspond to another hexagon. That is, adjacent resistance probes 100 have edges that are relatively arranged and parallel to each other. Multiple resistance probes 100 interact with each other to achieve the monitoring of the large-area coating 30. And when the structure of the resistance probe 100 is hexagonal, the minimum number of probes required at this time is three.

[0036] In some specific embodiments of the present invention, the thickness of the resistance probe 100 is 1 mm to 3 mm.

[0037] In some specific embodiments of the present invention, all the resistance probes 100 are evenly distributed around the resistance tester 200, and the distance between adjacent resistance probes 100 is equal.

[0038] In some specific embodiments of the present invention, each resistance probe 100 is connected to the corresponding wire 10 by spot welding.

[0039] The present resistive large-area coating 30 degradation detection device is described below with reference to a specific embodiment.

[0040] Step 1: A hexagonal resistance probe 100 is made of titanium alloy metal material, wherein the resistance probe 100 has a thickness of 2 mm and a side length of 10 mm, and there are five of them.

[0041] Step 2: Prepare more than ten meters of copper wire, a 200-yuan resistance tester, and a roll of insulating tape.

[0042] Step 3: In an area of ​​15m 2 An average of five sites are selected on the surface of the steel plate, and the five sites are surrounded to form a regular pentagonal shape so that the interval between two adjacent sites remains consistent.

[0043] Step 4: Grind the steel plate at the location and paste the insulating film 300, install the titanium alloy resistance probe 100 and record the numbers 1#, 2#, 3#, 4# and 5# respectively.

[0044] Step 5: Connect a wire 10 to each of the tops of the five titanium alloy resistance probes 100 by spot welding, and connect the wires 10 to the resistance tester 200 .

[0045] Step 6: Brush the anti-corrosion coating 30 on the surface of the steel structure. After the coating 30 solidifies, test the resistance value of the coating 30 between different probes using a resistance tester 200. The test frequency is once a month. Draw a curve of the resistance value changing over time to complete the degradation performance monitoring of the large-area coating 30.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A resistive large-area coating deterioration monitoring device, characterized in that, Comprising: At least three resistance probes (100); A resistance tester (200), the resistance tester (200) is respectively connected to each of the resistance probes (100) through a wire (10), and the resistance tester (200) is used to test the resistance value of the coating (30) between different resistance probes (100); An insulating film (300), the insulating film (300) is connected to the resistance probe (100), and the resistance probe (100) is connected to the substrate (20) through the insulating film (300).

2. The resistive large-area coating deterioration monitoring device according to claim 1, characterized in that, The resistance probe (100) is made of inert metal material.

3. The resistive large-area coating deterioration monitoring device according to claim 2, wherein The resistance probe (100) is made of titanium alloy material.

4. The resistive large-area coating deterioration monitoring device according to claim 1, characterized in that, The resistance probe (100) has a polygonal structure.

5. The resistive large-area coating deterioration monitoring device according to claim 4, characterized in that, The resistance probe (100) has a hexagonal structure.

6. The resistive large-area coating deterioration monitoring device according to claim 2, characterized in that, The thickness of the resistance probe (100) is 1 mm to 3 mm.

7. The resistive large-area coating deterioration monitoring device according to claim 1, characterized in that, All the resistance probes (100) are evenly distributed around the resistance tester (200), and the distance between two adjacent resistance probes (100) is equal.

8. The resistive large-area coating deterioration monitoring device according to claim 1, characterized in that, Each resistance probe (100) is connected to the corresponding wire (10) by spot welding.

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