Delayed petroleum coking vessel inspection device and method

摘要

This invention comprises a system and a method for inspecting the inside of delayed petroleum coking vessels to identify deformations, detect and determine the severity of other defects, and visually observe the inside of the inspected vessel.

主权项

1. A vessel inspection system for inspecting the interior surface of a delayed petroleum coking vessel to determine defects and dimensional changes in the vessel, the system including a device comprising:
a) frame; b) a support for supporting the frame for movement within the vessel along a vertical axis; c) a rotary positioner adapted to position the frame rotationally with respect to a vertical axis; d) an enclosure for electronics; e) a video camera supported on the frame and operably connected to at least one of a monitor and a recording means for providing video scanning of the interior surface of the vessel; f) a camera positioner supported on the frame and operable to position the video camera for viewing by the video camera, the camera positioner being operable to position the video camera about a second axis perpendicular to the rotary positioner; g) a floodlight supported on the frame for illuminating the interior surface of the vessel for viewing by the video camera; h) a support on the vessel for clamping the support in a predetermined lateral and vertical position with respect to the vertical axis of the vessel during operation of the system; i) a crawler positioned on an arm extension from at least one of the support and the frame for positioning the crawler proximate to all or selected portions of the interior of the vessel to be tested; j) an Alternating Current Field Measurement (ACFM) unit mounted on the crawler for testing the all or selected portions of the interior of the vessel; k) a crawler positioner for positioning the crawler and ACFM unit in selected locations; and l) a recorder coupled to the ACFM unit for recording signals indicative of the ACFM unit position and the ACFM unit data from the selected locations.