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Composite electrochemical device for cathodic protection of condensing piping system

A cathodic protection and condensation tube technology, applied in the field of composite electrochemical devices, can solve the problems of labor-consuming, time-consuming, complicated control, etc., and achieve the effects of improving film-forming quality, saving raw material costs, and increasing resistance

Active Publication Date: 2017-10-20
SUNRUI MARINE ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the electrochemical cathodic protection circuit is separated from the iron ion generating circuit, the device has the problems of complicated control, labor and time-consuming

Method used

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  • Composite electrochemical device for cathodic protection of condensing piping system
  • Composite electrochemical device for cathodic protection of condensing piping system

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Embodiment Construction

[0018] see figure 1 and figure 2 , a composite electrochemical device for cathodic protection of condensing tubes, including a condenser A, the condenser A includes a shell 1, a tube sheet 2 and a cooling tube 3, and the tube sheet 2 made of copper alloy is installed on a mild steel Inside the casing 1, a cooling tube 3 made of copper alloy is installed in each hole of the tube sheet 2, and a water chamber 20 is formed between the tube sheet 2 and the closed end of the casing 1, and a rubber lining 21 is provided inside the water chamber 20 . The closed end of the shell 1 is provided with a composite iron anode 5, and an insulating plate 6 is arranged on opposite sides of the compound iron anode 5. The insulating plate 6 on one side is installed inside the closed end of the shell 1, and the other The insulating plate 6 on one side is equipped with an auxiliary cathode 4 (supported in the through hole at the center of the composite iron anode 5). A reference electrode 8 for...

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Abstract

A composite electrochemical device used for cathodic protection of condensing tubes. A composite iron anode is provided at the closed end of the condenser shell, and insulating plates are provided on opposite sides of the composite iron anode. The insulating plate on one side Installed on the inner side of the closed end of the casing, the insulating plate on the other side is equipped with an auxiliary cathode; a reference electrode for detecting a constant potential value is installed near the tube sheet in the water chamber; the casing, composite iron anode, The reference electrode and the auxiliary cathode are respectively connected to the corresponding output ends of the control device. The invention has the advantages that: adopting the iron alloy anode applied current cathodic protection method and the electrolytic iron anode film forming combined protection can completely solve all the problems existing in the separate protection. It has broad promotion and application prospects in solving the corrosion problem of copper alloy pipelines in power plants and ship condensers, and can greatly save raw material costs.

Description

technical field [0001] The invention relates to a composite electrochemical device for cathodic protection of condensing pipe systems, which is a composite electrochemical device capable of electrolyzing and generating iron ions while applying external current cathodic protection. It is mainly used for corrosion protection of condensers in power plants or ships. Background technique [0002] The condenser is one of the important components of the generator set in a power plant. Once it fails due to corrosion and damage, it will cause the entire unit to shut down and stop production. Condenser tubes are usually made of copper alloy. The water chamber wall is usually made of titanium steel, the tube sheet material is usually made of carbon steel, and the tube sheet material is usually made of carbon steel or tin brass. Due to the galvanic corrosion of dissimilar metals such as tube bundles, tube sheets and water chambers, the impact corrosion of turbulent cooling water and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/06C23F13/00
Inventor 姚萍王洪仁刘光洲丁慧
Owner SUNRUI MARINE ENVIRONMENT ENG