Test block for detecting coating of wind power tower barrel

Abstract

The invention relates to the field of ultrasonic detection, in particular to a test block for detecting a coating of a wind power tower barrel. The test block comprises a test block body; a forward stepped structure is arranged on the front surface of the test block body; the back surface of the test block body is provided with a reverse stepped structure which can be matched with the forward stepped structure; the forward stepped structure and the reverse stepped structure are distributed around a central line of the test block body in a central symmetry mode; and comparison areas are arranged on the top surface and the bottom surface of the test block body. A comparison experiment can be carried out through a coating area and a non-coating area which are arranged on the test block; the internal quality of a weld joint of the wind power tower barrel can be detected under the condition that the original coating is not damaged, and a detection effect is good; coating thickness measurement and equivalent comparison can be completed on one test block; and meanwhile, the test block is convenient to carry and store and fast to calibrate, and has the characteristics of convenience in data comparison and high practicability.

Description

Technical field [0001] The invention relates to the field of ultrasonic detection, in particular to a test block for the coating of a wind turbine tower. Background technique [0002] Ultrasonic testing is often used for internal welding seam inspections of wind power towers. When testing, it is necessary to polish and remove the paint layer to expose the metallic luster before ultrasonic testing. However, due to the large number of welds of wind power towers, the operation is time-consuming and time-consuming. It is labor-consuming and uneconomical. At the same time, the anti-corrosion effect of the surface of the workpiece may be damaged by the grinding. The existing method may be to test the coating by polishing, and then restore the coating after the test. The anti-corrosion conditions of the units already in service are far less than the conditions of the production workshop, so many on-site anti-corrosion supplementary paints ultimately fail to achieve the intended purpose....

AI Technical Summary

Problems solved by technology

[0002] Ultrasonic testing is often used for internal inspection of welds in wind power towers. During the inspection, it is necessary to first polish and remove the paint layer to expose the metallic luster, and then perform ultrasonic testing. However, due to the large number of welds in wind power towers, the operation is time-consuming and expensive. It is labor-intensive and uneconomical, and at the same time, the anti-corrosion effect on the surface of the workpiece may be damaged due to grinding. The existing method may be to test the coating by grinding, and then restore the coating after testing

However, the anti-corrosion conditions of the units already in service are far lower than those in the production workshop, so many on-site anti-corrosion supplementary paints ultimately fail to achieve the expected purpose

Images