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Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate

A storage tank bottom plate and sensor technology, which is applied in the field of ultrasonic measurement and piping systems, can solve the problems of increased detection cost, increased labor intensity of detection personnel, unfavorable technology application and promotion, etc.

Active Publication Date: 2013-11-06
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the multi-sensor method cannot substantially solve the problem of low detection efficiency, and can only alleviate it to a certain extent. The reasons are: first, the multi-sensor method still requires manual arrangement and movement of sensors, which does not reduce the workload of the detection personnel. With the enlargement of storage tanks, the labor intensity of inspectors will increase significantly; secondly, the multi-sensor detection method requires the detection instrument to have a large number of signal channels, which increases the detection cost and is not conducive to the application and promotion of technology

Method used

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  • Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate
  • Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate
  • Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate

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Experimental program
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Effect test

Embodiment 1

[0077] The materials of the device outer frame 1, support mechanism, adsorption mechanism, movement mechanism, removal mechanism, and sensor fixing mechanism of this example are all processed by high-strength aluminum alloy materials unless otherwise specified.

[0078] The outer frame 1 is a semi-"I"-shaped plate with a thickness of 3mm and a width of 40mm. The upper part of the half-"I" shape is 300mm long, and the lower section of the half "I" shape is 400mm long and 400mm high. The lower part of the half "I" shape has an assembly hole a4 The diameter is 5mm, and there are 9 assembly holes a4 in total, 2 in the upper part of the half "I" shape, and 7 in the lower part of the half "I" shape. The spacing of each assembly hole is determined according to the assembly hole spacing of the fixed mechanism.

[0079] The "Z"-shaped connector 5 of the support mechanism has a thickness of 2 mm and a width of 30 mm. The upper section of the "Z" shape is 40 mm long, the lower section is ...

Embodiment 2

[0090] This embodiment is basically the same as Embodiment 1, except for the following differences: 1) The thickness of the sensor cavity 44 is increased to 4mm, and other dimensions remain unchanged. The sensor cavity 44 does not use elastic rubber to fill the gap when accommodating sensors of different sizes, but installs adjusting bolts on the top, left side, right side and front side of the sensor container 44, and adjusts by screwing in and out of these bolts. The position of the sensor in the sensor cavity 44, and the fixing of the sensor is realized; 2) The "Z" shaped connector 5 in the support mechanism is fixed with the outer frame 1 through a single assembly hole a4 by bolts, and due to the single assembly hole, Therefore, the direction adjustment of the support wheel can be realized to meet the detection needs of storage tanks with different diameters and outer edge plate widths.

[0091] The two cases have been tested and found to be simple in structure, convenient...

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Abstract

The invention discloses a sensor-carrying device for plane guided wave online detection of the defects of a base plate of a vertical-type metal storage tank, which relates to the technical fields of supersonic wave measurement and pipeline systems. The sensor-carrying device comprises an outer frame, a support mechanism, an adsorption mechanism, a movement mechanism, a dismounting mechanism and a sensor fixing mechanism. The support mechanism and the sensor fixing mechanism are fixed at the lower part of the outer frame. The adsorption mechanism, the movement mechanism and the dismounting mechanism are fixed in the outer frame. The support mechanism, the adsorption mechanism and the movement mechanism allows the sensor-carrying device to be balancedly supported on an outer edge plate of the storage tank and to move along the outer edge plate. In detection, the sensor-carrying device is arranged on the outer edge plate (2) of the storage tank and is adsorbed on a storage tank wall plate (3). The sensor-carrying device provided by the invention enables continuous movement of a sensor to be realized, provides the pressure for tightly pressing the sensor on the outer edge plate and improves detection efficiency.

Description

technical field [0001] The invention relates to a sensor carrying device for on-line detection of flat-plate guided wave defects on the bottom plate of a vertical metal storage tank, and relates to the technical fields of ultrasonic measurement and pipeline systems. Background technique [0002] Ground vertical metal storage tanks are widely used in the petrochemical industry to store chemical raw materials and products. Corrosion is an important hidden danger that seriously threatens the safety of storage tanks. According to relevant statistics, base plate corrosion accounts for about 80% of storage tank corrosion, and 60% of base plate corrosion comes from edge plate corrosion. Detection is an important way to maintain the safety of storage tanks. Conventional floor corrosion detection needs to be carried out after the storage tank is shut down and opened for cleaning. This offline detection method not only has a long detection period, but also has high costs. Therefore, ...

Claims

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Application Information

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IPC IPC(8): G01N29/265
Inventor 康叶伟王维斌刘广文赵丑民林明春苏建峰王禹钦任重冯展军林嵩刘哲蒋先尧
Owner PIPECHINA SOUTH CHINA CO
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