Nondestructive examination device and method of crack defects of inner surface of underground foundation embedded section of electric pole

Abstract

The invention provides a nondestructive examination device of crack defects of the inner surface of an underground foundation embedded section of a reinforced concrete electric pole, which comprises asupporting sleeve and an autoscope system. The invention also provides a nondestructive examination device of the crack defects of the inner surface of the underground foundation embedded section ofthe reinforced concrete electric pole, which comprises the following steps: extending a flexible electronic video industrial autoscope into the electric pole through a drain hole of the electric poleby using the supporting sleeve, and positioning the flexible electronic video industrial autoscope at the axes of the electric pole; realizing movements in vertical direction and rotating direction through external control by an autoscope probe, and transmitting the collected image of the inner surface of the electric pole to an external video monitor so that detection staffs can observe and judgethe crack defects. The invention has convenient field test operation without dismantling the electric pole and is suitable to the safety operation maintenance of various electric poles in an overheadpower transmission line project.

Description

Technical field [0001] The invention relates to a non-destructive detection device and method for the inner surface crack defect of the buried deep section of the reinforced concrete electric pole underground foundation, in particular to the real-time rapid non-destructive detection of the inner surface crack defect of the electric pole in online operation, and belongs to the overhead power transmission line of the power grid The technical field of engineering safety operation overhaul and maintenance. Background technique [0002] Reinforced concrete pole is a kind of pole widely used in my country's 10-220 kV overhead transmission line project. According to the requirements of voltage level and structural strength and deflection, it is usually divided into single pole or gate pole (double pole) line structure Type, each rod is composed of 1 to 3 rod segments, the wall thickness is generally 30mm-50mm, and the total length is 6m-15m. It belongs to a ring, hollow, thin-walled, and...

AI Technical Summary

Problems solved by technology

Therefore, the existing method for checking the cracks on the outer surface of the underground section of the electric pole has a large workload and is inconvenient to operate. Only a part of the underground section of the electric pole can be inspected for cracks on the outer surface, and it has certain influence on the operation of the electric pole line. Negative impact

However, there is no effective way to detect crack defects on the parts invisible to the human eye inside and on the inner surface of the pole. Routine safety inspections cannot detect these part

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