Three-dimensional laser scanning deformation detection device and method for storage tank with insulation layer

Abstract

The invention provides a three-dimensional laser scanning deformation detection device and method with a heat preservation layer storage tank. The detection device comprises a pull-rivet nut, a hollowbolt, a nut, a square plate and three cross-shaped targets; wherein the pull-rivet nut is riveted with the outer protecting iron sheet layer of the storage tank; the hollow bolt is of a cylindrical hole cavity structure, and a cylindrical hole penetrating from the head of the bolt to the bottom of the screw rod is formed in the center axis of the hollow bolt; inner threads are arranged on a preset area of the surface of the inner hole of the head of the hollow bolt; external threads are arranged on the outer surface of the screw rod of the hollow bolt; the nut is matched with the hollow boltto fasten and connect the square plate; a round small hole is formed in the center of the square plate; the three cross-shaped targets are attached to the outer surface of the square plate; and the cross intersection lines of the three cross-shaped targets are connected to form a triangle.

Description

technical field [0001] The invention relates to the technical field of storage tank safety management and measurement, in particular to a deformation detection device and method for an in-service storage tank with an insulating layer. Background technique [0002] my country's storage tanks are constantly developing in the direction of large-scale, localization and centralization. Large-scale vertical steel welded atmospheric storage tanks have become the key strategic equipment for my country's oil and gas resources and chemical material reserves. However, due to foundation settlement, liquid level rise and fall, large storage tanks are prone to geometric deformation. When the deformation is severe, the sealing ring of the floating roof tank will not be tightly sealed, resulting in high oil and gas concentration and increased oil and gas loss, which is very easy to cause Unsafe accidents such as fire and explosion. In addition, when the deformation of the storage tank exce...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that the current three-dimensional laser scanning technology cannot be applied to the external inspection of storage tanks without removing the insulation layer, the patent of the present invention provides a method and device for detecting deformation of in-service storage tanks with insulation layers

Images