Device and method for detecting damaged point of outer wall corrosion-resistant layer of extra-buried deep pipeline
A damage point and anti-corrosion layer technology, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as misjudgment of anti-corrosion layer damage points, anti-corrosion layer damage points, etc. The effect of strong ability, simple installation and operation method
Active Publication Date: 2017-05-10
江苏晟尔检测仪器有限公司
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If the distance between the two probes is increased, the potential difference will increase, but it is easily affected by surface environmental factors. After increasing the distance between the two probes, the potential difference will increase. In the presence of environmental conditions, a large signal does not necessarily mean a damaged point of the anti-corrosion layer, and it may also be caused by environmental conditions, which may easily lead to misjudgment of the damaged point of the anti-corrosion layer
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[0046] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0047] Refer to the attached Figure 1-3 To exemplarily describe the method of using the device of the present invention to detect corrosion damage points on the outer wall of a pipeline.
[0048] First use the cable terminal drawn from the pipeline body on the test pile of the buried pipeline to connect the transmitter, and apply a set of high frequency (such a...
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The invention relates to a device and method for detecting a damaged point of an outer wall corrosion-resistant layer of an extra-buried deep pipeline. The device comprises an emitter, two probe poles and a detecting instrument. The emitter is electrically connected to the pipeline; each probe pole is provided with a hollow body in a rectangular shape, one ends of the body are provided with probe needles, the other ends of the body are provided with grip handles, connectors are arranged on the grip handles, and the probe needles are electrically connected to the connectors through wires arranged in the body; the detecting instrument comprises a power source unit, an input protection unit, a gain adjustment unit, an amplifying processing unit, a denoising filtering unit, a single chip processing unit and a display unit; the input ends of the input protection unit are electrically connected to the connectors of the probe poles, and the output ends of the input protection unit, the gain adjustment unit, the amplifying processing unit, the denoising filtering unit, the single chip processing unit and the display unit are electrically connected in sequence. According to the device and method for detecting the damaged point of the outer wall corrosion-resistant layer of the extra-buried deep pipeline, the position of the damaged point can be fast and accurately determined.
Description
technical field [0001] The invention belongs to the technical field of underground pipeline detection, and in particular relates to a device and a method for detecting damage points of an outer wall anticorrosion layer of an ultra-buried pipeline. Background technique [0002] With the rapid development of my country's petrochemical industry and the improvement of the construction speed of urban public facilities, the construction of underground metal pipelines is also developing rapidly. But at the same time, underground metal pipelines are often corroded by various harmful substances. The corrosion of pipelines has brought huge economic losses to human beings and the social environment, and the problems of social security have become increasingly prominent. Therefore, the steel pipes used to transport various media need to be protected to avoid corrosion of various corrosion factors in the soil, compound ions, bacteria, various conditions that are conducive to the passage ...
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IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 孙珍同张忠贵汤国华
Owner 江苏晟尔检测仪器有限公司