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Closed storage tank cathode protection potential monitoring device

A technology of potential monitoring and cathodic protection, which is applied in the field of safety monitoring and corrosion protection, can solve the problems of a single monitoring device and the inability to monitor and evaluate the cathodic protection effect of storage tanks, and achieve the effect of prolonging the use time

Pending Publication Date: 2019-06-14
CHINA PETROLEUM ENG & CONSTR +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the cathodic protection inside the storage tank mostly adopts the sacrificial anode method, and there is no monitoring device for the cathodic protection potential, so it is impossible to monitor and evaluate the cathodic protection effect inside the storage tank; , which are mostly used in H2S-free environments and / or non-closed systems, and the monitoring device is relatively simple

Method used

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  • Closed storage tank cathode protection potential monitoring device
  • Closed storage tank cathode protection potential monitoring device
  • Closed storage tank cathode protection potential monitoring device

Examples

Experimental program
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Effect test

Embodiment

[0033] A closed storage tank cathodic protection potential monitoring device, comprising a monitor 1 and a reference electrode 19, the monitor 1 and the reference electrode 19 are connected by a cable, and the monitor 1 and the closed storage tank are connected by a cable connected, the reference electrode 19 is located inside the closed storage tank, and the monitor 1 is located outside the closed storage tank.

[0034] Specifically, the monitor and the reference electrode are connected through the connecting cable 2, and the roof 13 of the closed storage tank has an opening to match the cable to ensure the airtightness of the storage tank. A sealing ring can also be set at the opening of the closed storage tank, and the cable Through the sealing ring, the sealed connection between the reference electrode and the monitor is realized.

[0035] The monitor and the tank are connected by a monitoring cable 24, and a monitoring cable connector 23 is arranged at a position to be me...

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Abstract

The invention relates to a closed storage tank cathode protection potential monitoring device. The monitoring device comprises a monitor and a reference electrode, wherein the monitor is connected with the reference electrode through a cable, the monitor is connected with a closed storage tank through the cable, the reference electrode is located in the closed storage tank, and the monitor is located outside the closed storage tank. According to the closed storage tank cathode protection potential monitoring device, the cathode protection potential of the closed storage tank (sacrificial anode / forced current) can be monitored in corrosive environments with high H2S content, high temperature, high salt-containing oil-gas-water and the like, and the effect of cathodic protection on the innerwall of the storage tank is evaluated so as to be adjusted in time, so that the service time of equipment is prolonged.

Description

technical field [0001] The invention relates to the field of safety monitoring and corrosion protection, in particular to a cathodic protection potential monitoring device for a closed storage tank. Background technique [0002] With the development and in-depth development of the oil and gas industry, especially the development of high H2S and high salt oil and gas fields, the corrosive medium in the oil and gas field production fluid is increasing, which brings great risks to the safe and stable operation of the oil and gas field surface facilities , especially for the corrosion protection and corrosion monitoring of large storage tanks in the production water treatment system put forward higher requirements. At present, the storage tanks of production water treatment systems are mostly closed systems. On the one hand, the leakage of H2S inside the storage tanks is avoided to endanger the safety of station personnel, and on the other hand, the entry of outside air, especia...

Claims

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Application Information

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IPC IPC(8): C23F13/22
Inventor 樊学华于勇祝亚茹李向阳池恒董磊谷丰陈丽娟张莹娜汤迎文
Owner CHINA PETROLEUM ENG & CONSTR
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