Corrosion experiment device and method capable of controlling temperature and humidity for high-voltage electric field environment

Abstract

The invention proposes a corrosion experiment device and method capable of controlling temperature and humidity for a high-voltage electric field environment. The corrosion experiment device is characterized by comprising an external framework, an upper pole plate and a lower pole plate, wherein the external framework comprises an insulation plate, the upper pole plate and the lower pole plate arearranged in the external framework, are same in shape and size and are in round disc shapes, a voltage sharing ring is arranged on each of disc edges of the upper pole plate and the lower pole plate,the upper pole plate is suspended at an upper part of the external framework by an insulation rope, a net-shaped support plate is horizontally arranged at a middle part of the external framework, thelower pole plate is arranged on the net-shaped support plate, the disc bottoms of the upper pole plate and the lower pole plate are parallel to each other and are oppositely arranged, the upper poleplate is connected with a high-voltage experiment transformer, the lower pole plate is connected with ground, a solution groove is formed in a lower part of the net-shaped support plate, a constant-temperature heating pad is arranged below the solution groove, and an airflow fan is arranged on the support plate. By the corrosion experiment device, corrosion of key conductor metal under the high-voltage electric field environment can be accurately simulated, and the corrosion experiment is enabled to be safely and stably performed.

Description

technical field

[0001] The invention relates to the field of electric power tests, in particular to a test device and method for corrosion in a high-voltage electric field environment with controllable temperature and humidity. Background technique

[0002] The low-latitude coastal zone is in a high-temperature and humid environment most of the year. Temperature and humidity have a great influence on the corrosion failure of the high-voltage transmission network in the power system. In addition, the size of the airflow will affect the thickness and volatilization rate of the corrosion liquid on the metal surface of the key conductor. Temperature, humidity, and airflow rates all affect the corrosion behavior of critical metallic conductors. Corrosion failure of high-voltage power grid materials has a major problem with people's lives and factory production, and it also poses a major hidden danger to personal safety. Accurately studying the corrosion phenomenon of aluminum a...

Examples

example 1

[0049] Example 1: A 5052 aluminum alloy with a specification of 20mm×20mm×2mm was used as a corrosion sample, and the sample was packaged, and only the surface of 20mm×20mm was exposed as a corrosion area. The voltage of the light transformer is adjusted to 20KV, and the distance between the upper and lower plates is adjusted to 100mm and 50mm. At this time, the strengths of the two electric fields are 200KV / m and 400KV / m respectively. Place 2×8 samples on two sample stages for corrosion. Precisely drop the corrosion solution through a 100 μL pipette, and make the corrosion solution evenly covered. 12 hours is a cycle cycle. After 30 days of corrosion, a scanning electron microscope test was performed.

[0050] Such as Figure 5 As shown in Figure a, under the electric field strength of 0KV / m, there are a few corrosion and oxidation products on the surface of the aluminum alloy, and no cracks appear on the surface of the substrate. In Figure b, under the electric field st...

example 2

[0051] Example 2: Use carbon steel with a specification of 30mm×30mm×2mm as the corrosion sample, encapsulate the sample, and only expose the surface of 30mm×30mm as the corrosion area. The voltage of the light transformer is adjusted to 40KV, and the distance between the upper and lower plates is adjusted to 100mm and 50mm. At this time, the strengths of the two electric fields are 400KV / m and 800KV / m respectively. Place 2×4 samples on two sample stages for corrosion. Precisely drop the corrosion solution through a 100 μL pipette, and make the corrosion solution evenly covered. 12 hours is a cycle cycle. The device was operated stably for 60 cycles, and the results obtained were similar to Example 1.

technical field

[0001] The invention relates to the field of electric power tests, in particular to a test device and method for corrosion in a high-voltage electric field environment with controllable temperature and humidity. Background technique

[0002] The low-latitude coastal zone is in a high-temperature and humid environment most of the year. Temperature and humidity have a great influence on the corrosion failure of the high-voltage transmission network in the power system. In addition, the size of the airflow will affect the thickness and volatilization rate of the corrosion liquid on the metal surface of the key conductor. Temperature, humidity, and airflow rates all affect the corrosion behavior of critical metallic conductors. Corrosion failure of high-voltage power grid materials has a major problem with people's lives and factory production, and it also poses a major hidden danger to personal safety. Accurately studying the corrosion phenomenon of aluminum a...

Examples

example 1

[0049] Example 1: A 5052 aluminum alloy with a specification of 20mm×20mm×2mm was used as a corrosion sample, and the sample was packaged, and only the surface of 20mm×20mm was exposed as a corrosion area. The voltage of the light transformer is adjusted to 20KV, and the distance between the upper and lower plates is adjusted to 100mm and 50mm. At this time, the strengths of the two electric fields are 200KV / m and 400KV / m respectively. Place 2×8 samples on two sample stages for corrosion. Precisely drop the corrosion solution through a 100 μL pipette, and make the corrosion solution evenly covered. 12 hours is a cycle cycle. After 30 days of corrosion, a scanning electron microscope test was performed.

[0050] Such as Figure 5 As shown in Figure a, under the electric field strength of 0KV / m, there are a few corrosion and oxidation products on the surface of the aluminum alloy, and no cracks appear on the surface of the substrate. In Figure b, under the electric field st...

example 2

[0051] Example 2: Use carbon steel with a specification of 30mm×30mm×2mm as the corrosion sample, encapsulate the sample, and only expose the surface of 30mm×30mm as the corrosion area. The voltage of the light transformer is adjusted to 40KV, and the distance between the upper and lower plates is adjusted to 100mm and 50mm. At this time, the strengths of the two electric fields are 400KV / m and 800KV / m respectively. Place 2×4 samples on two sample stages for corrosion. Precisely drop the corrosion solution through a 100 μL pipette, and make the corrosion solution evenly covered. 12 hours is a cycle cycle. The device was operated stably for 60 cycles, and the results obtained were similar to Example 1.

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