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Oil-gas pipeline polarization potential monitoring device

A technology for monitoring devices and polarization potentials, applied in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of inability to monitor the cathode of oil and gas pipelines, and cannot effectively dynamically reflect the polarization potential of oil and gas pipelines, etc., to achieve The effect of eliminating the influence of interference and stray current

Active Publication Date: 2012-12-12
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The corrosion monitoring system is also unable to monitor the real polarization potential of the oil and gas pipeline cathodic protection and the current flowing through the probe, and cannot effectively dynamically reflect the polarization potential of the oil and gas pipeline

Method used

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  • Oil-gas pipeline polarization potential monitoring device
  • Oil-gas pipeline polarization potential monitoring device
  • Oil-gas pipeline polarization potential monitoring device

Examples

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Embodiment Construction

[0028] Embodiment. The specific embodiment of the present invention is described with this example and the present invention is described further. This example is an experimental prototype.

[0029] This example consists of a current interrupter, a galvanic corrosion meter, an adjustable resistance, a data collector, a probe, a portable reference electrode, and a computer (see figure 1 ).

[0030] Electrical schematic diagram see figure 2 , the negative terminal is connected to the pipeline test pile or the current interrupter of the negative pole of the potentiostat. AI8 and AI9 of the data collector; AI GND 3 and AI GND 6 of the data collector are connected together, and then connected to AI9 of the data collector (also can be connected to AI9 after an adjustable resistance); AI0 and AI1 of the data collector are respectively connected to the probe long-term reference electrode leads and portable reference electrodes, and the USB interface of the data collector is connec...

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PUM

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Abstract

The invention discloses an oil-gas pipeline polarization potential monitoring device, and relates to the technical fields of general corrosion prevention of a metal material, and pipeline systems. The device comprises a current interrupter, a couple corrosion meter, an adjustable resistor, a data collector, a probe, a portable reference electrode and a computer, wherein the negative end of the current interrupter is connected to the cathode of a pipeline test pile or a constant potential instrument, the positive end of the current interrupter is connected to one end of the couple corrosion meter, and the other end of the couple corrosion meter is connected with a rod-shaped tube steel electrode lead of the probe, and AI8 and AI9 of the data collector respectively through the adjustable resistor; AI GND 3 and AI GND 6 of the data collector are connected together, and then are connected with the AI9 of the data collector, or go through the adjustable resistor and then are connected with the AI9; and AI0 and AI1 of the data collector are connected with the long-acting reference electrode lead of the probe and the portable reference electrode respectively, and the USB interface of the data collector is connected with the USB interface of the computer. The device can realize the long-term monitoring of the real polarization potential, and the accurate calculating of the polarization current density of the probe.

Description

technical field [0001] The invention relates to a polarization potential monitoring device for oil and gas pipelines. General areas of corrosion protection and piping technology involving metallic materials. Background technique [0002] At present, some units and research institutions have designed some pipeline polarization potential measurement devices, but due to the limitation of the probe structure and equipment, it is very difficult to monitor the real polarization potential. The multi-layer steel test piece is the test probe, and the specific potential value is read out by the potential measuring equipment. The principle of eliminating stray current interference is mostly concentrated on the insulation of the outer wall of the probe and the multi-chamber reference electrode, which cannot guarantee the actuality of the cathodic protection of the oil and gas pipeline. Monitoring the polarization potential and the current flowing through the probe cannot effectively an...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01N17/04
Inventor 张丰陈新华陈洪源王维斌薛致远张永胜高强赵晋云康叶伟赵君王禹钦吴长访蔡培培毕武喜张玉志郝建斌刘玲莉
Owner PIPECHINA SOUTH CHINA CO
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