A pipeline protective layer density monitoring device

Abstract

The invention belongs to the field of density monitoring devices, in particular to a device for monitoring density of a protecting layer of a pipeline. The device comprises the pipeline 1, the protecting layer 2 of the pipeline, a magnetic sphere 3, a first annular magnet 4, a second annular magnet 5, a first framework 9 and a second framework 10, wherein the pipeline 1 is made of a non-magnetic material; the protecting layer 2 of the pipeline is arranged around the periphery of the pipeline 1 and is provided with a magnetic material; the magnetic sphere 3 is arranged in the pipeline 1; the first annular magnet 4, the second annular magnet 5, the first framework 9 and the second framework 10 are arranged around the exterior of the protecting layer 2 of the pipeline; a first electrode plate11 and a second electrode plate 12 are respectively fixedly arranged on the first annular magnet 4 and the first framework 9 to form a first capacitance sensor, and a third electrode plate 13 and afourth electrode plate 14 are respectively fixedly arranged on the second annular magnet 5 and the second framework 10 to form a second capacitance sensor. The device for monitoring the density of theprotecting layer of the pipeline has the advantages that the position of the low-density area of the protecting layer can be accurately monitored without damaging the pipeline and the protecting layer; the disassembly and assembly are flexible, the convenience in use is realized, the maintenance efficiency of the pipeline is improved, and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the field of density monitoring devices, in particular to a pipeline protective layer density monitoring device. Background technique [0002] A pipeline is a device used to transport gas, liquid or fluid with solid particles connected by pipes, pipe connectors and valves. Usually, after the fluid is pressurized by blowers, compressors, pumps and boilers, it flows from the high-pressure part of the pipeline to the low-pressure part, and it can also be transported by the pressure or gravity of the fluid itself. Pipes are widely used, mainly in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. [0003] In some special environments, it is necessary to install a protective layer on the outer wall of the pipeline for the purpose of heat preservation and corrosion resistance. The uniformity of the protec...

AI Technical Summary

Problems solved by technology

If the protective layer is not uniform, such as the thermal insulation layer of the heating pipeline, water vapor and oxygen in the external environment are more likely to accumulate in the low-density area, so that the low-density area is used as a breakthrough to corrode the pipe wall and increase the heat loss of the pipe wall here. The cost of maintenance and repair will seriously affect the service life of the pipeline

[0004] It can be seen that it is very necessary to monitor the density of the pipeline protective layer. However, no protective layer density monitoring device directly applied to the pipeline has been found.

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