Large bottle type vessel and long tube trailer steel cylinder internal detection method and system

Abstract

The invention belongs to the technical field of special pressure vessel internal detection, and discloses a large bottle type vessel and long tube trailer steel cylinder internal detection method and system, the large bottle type vessel and long tube trailer steel cylinder internal detection system is provided with an extension shaft used for providing a support effect for a detection propulsion module and a rotation module; a detection propelling module used for driving the detection module in the steel cylinder to adjust the position back and forth through a propelling rotating structure; a rotating module used for clamping or loosening the long shaft through rotation of a motor; and a steel cylinder internal detection module used for detecting defects on the inner wall of the steel cylinder. The steel cylinder inner detection module is placed on the inner side of a steel cylinder and connected with the lengthened shaft through the long shaft, the detection propelling module and the rotating module are installed on the lengthened shaft, and the electric push rod is arranged on the upper side of the detection propelling module. Most importantly, the invention fundamentally solves the huge technical problem that the bottle type container with small port and large inner diameter cannot effectively implement internal detection, and breaks the bottleneck.

Description

technical field [0001] The invention belongs to the technical field of internal detection of special pressure vessels, and mainly relates to a method and system for internal detection of large-scale bottle-type containers and steel cylinders of long-tube trailers. Background technique [0002] On the one hand, due to the special structure of this type of pressure vessel (the bottle mouth is small, the bottle body is large in diameter, and the bottle body is very long), it has caused a great "bottleneck" in the implementation of internal inspection. Until now, there has been no detection of inner wall defects. Testing Equipment. At present, external testing methods are mainly used in the existing technology, such as magnetic particle testing and ultrasonic testing, while magnetic particle testing can only detect defects on the outer surface of the bottle, and external ultrasonic testing has little effect on linear defects and pitting defects on the inner wall. Although endos...

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Problems solved by technology

Although endoscopes are also used for visual inspection, the inspection effect is very poor due to factors such as imaging quality and inner wall contamination, and this method cannot detect non-opening near-surface defects at all

On the other hand, the damage of this type of equipment mainly comes from the inside, one is the erosion of the material by the harmful medium in the medium; the other is that the hoop stress of the inner wall is the largest, so the failure of the equipment mainly occurs on the inner wall

[0003] Through the above analysis, the existing problems and defects of the existing technology are as follows: the existing detection technology has a blind area, which leads to a blind area in the control risk, and the existing detection technology requires very large and complicated tooling, the cost is very high, and the blind area is large and there are many missing points. , low efficiency, poor effect, great hidden danger

[0004] The difficulties in solving the above problems and defects are: the entrance space of the steel cylinder is too small, the internal diameter of the steel cylinder is too large, and it is impossible to fully observe whether the inner wall of the gas cylinder is damaged, and the length of the steel cylinder is too long, and general probes cannot observe comprehensively.

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