A laser positioning method and device for detecting the bottom plate of a storage tank

Abstract

The invention discloses a device for realizing a laser positioning method for detecting the baseboard of a storage tank. The device comprises a telescopic rod formed by sleeving a plurality of poles,every pole is provided with a laser emitter, a power supply is arranged at one end of the telescopic rod, and every laser emitter is connected with the power supply. The device uses laser beams emitted by the laser emitters to substitute a manually-drawn auxiliary straight line, the telescoping of the telescopic rod is used to control a distance among the laser beams; and the device can be contracted to a short length in order to be easily carried by a detection personnel, and is simple to operate and use, the emitted laser beams can be clearly seen even in a dark environment, and the device assists a detector in order to effectively reduce the missing detection probability.

Description

technical field [0001] The invention relates to the field of detection of pressure-bearing special equipment, in particular to a laser positioning method and device for detection of the bottom plate of a storage tank. Background technique [0002] As an advanced non-destructive testing method, magnetic flux leakage and low-frequency electromagnetic testing are used to detect volumetric defects such as corrosion on the bottom plate and lower surface of storage tanks. It is widely used in the pressure storage tank detection industry. In the corrosion detection of the bottom plate of the atmospheric pressure storage tank, usually a 100% inspection of the bottom plate of the storage tank needs to be carried out. The bottom plate of the atmospheric pressure storage tank is spliced ​​by several plates. Width: 1800mm-3500mm, length: 2000-10000mm, the scan width of one low-frequency electromagnetic inspection is 350mm, and multiple scans are required to complete the inspection work...

AI Technical Summary

Problems solved by technology

[0003] However, the working environment in the storage tank is relatively harsh and the light is dark. During the detection process, the detection instrument is required to walk in a straight line. It is necessary to draw auxiliary straight lines on the bottom plate of the storage tank to help the detection instrument to move straight. However, manual drawing of auxiliary lines not only works The large volume and dark and harsh working environment make it difficult to see the auxiliary lines drawn clearly, resulting in low efficiency and high requirements for testing personnel. If you do not pay attention to the testing equipment, it is easy to go astray, resulting in missed testing.

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