Cathodic Protection Devices for Pipeline Facilities

Abstract

The invention provides a cathode protective device of a pipeline facility. The cathode protective device of the pipeline facility is arranged on a conveying pipeline, comprises a sacrificial anode, aprotective sleeve, a battery and a test assembly, and further comprises a straight-through valve; one end of the straight-through valve is connected with the conveying pipeline, and the other end of the straight-through valve is in contact with the sacrificial anode; a gland which is connected with a screw thread is arranged at the top of the protective sleeve, the gland is connected with a cathode of the battery, and an anode of the battery is connected with the conveying pipeline; one end of the sacrificial anode is arranged in the protective sleeve and is detachably connected with the gland, and the other end of the sacrificial anode is exposed; and the test assembly is fixed to one side of the sacrificial anode, and the test assembly is connected with the battery. The anode is in direct contact with liquid in the pipeline and reacts with dissolved oxygen in the liquid of the pipeline to eliminate the effect of the dissolved oxygen on the pipeline. The operation safety of the pipeline is ensured, and the corrosion speed of the pipeline is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of underground metal pipeline protection, in particular to a cathodic protection device for pipeline facilities. Background technique [0002] The liquid transported by the pipeline contains dissolved oxygen, especially in the oil field production, the crude oil transported and the sewage produced at the same time are mined from the ground, which contains a large amount of anions and cations. The presence of ions can easily cause electrochemical corrosion, cause pipeline perforation, and cause environmental pollution accidents. [0003] The existing cathodic protection measures are that the anode is in contact with the underground soil, not directly in contact with the liquid, and cannot eliminate the dissolved oxygen and free anions and cations in the liquid to the maximum extent. After the electrochemical reaction of the anode occurs, it is impossible to quickly know whether the reaction has been completed...

AI Technical Summary

Problems solved by technology

[0002] The liquid transported by the pipeline contains dissolved oxygen, especially in the oil field production, the crude oil transported and the sewage produced at the same time are mined from the ground, which contains a large amount of anions and cations. The presence of ions can easily cause electrochemical corrosion, causing pipeline perforation and environmental pollution accidents

[0003] The existing cathodic protection measures are that the anode is in contact with the underground soil, not directly in contact with the liquid, and cannot eliminate the dissolved oxygen and free anions and cations in the liquid to the maximum extent. After the electrochemical reaction of the anode occurs, it is impossible to quickly know whether the reaction has been completed. It is impossible to continue to respond, and can only rely on manual timing inspection, which is time-consuming and laborious.

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