Corrosion inhibition method and coating device for converter valve aluminum radiating base

A heat sink, converter valve technology, applied in the direction of coating, solid-state chemical plating, metal material coating process, etc., can solve the problems of heavy workload, treatment effect is greatly affected by human factors, etc., to solve the scaling problem , Solve the scaling problem of equalizing electrodes and slow down the effect of corrosion

Active Publication Date: 2016-08-03
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

This method has a heavy workload, the processing effect is greatly af

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  • Corrosion inhibition method and coating device for converter valve aluminum radiating base

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[0034] Example

[0035] A coating device for the aluminum heat sink of the converter valve of the present invention, such as figure 1 As shown, the coating device includes a coating solution volume tank 01, the coating solution volume tank 01 is provided with a liquid outlet pipeline and a liquid return pipeline, and the liquid outlet pipeline is communicated with the manifold inlet 41 of the valve assembly 00, The liquid return line is communicated with the manifold outlet 42 of the valve assembly 00, and the valve assembly 00 is provided with a converter valve aluminum heat sink (due to the existing structure of the valve assembly 00, in the figure 1 The drawing is omitted in the figure); there is a coating liquid injection pump 11 on the liquid outlet pipeline. The inlet of the coating liquid injection pump 11 is connected to the bottom of the coating liquid volume tank 01, and a coating liquid injection pump inlet door 31 is installed therebetween, and the outlet of the coa...

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Abstract

The invention discloses a corrosion inhibition method and a coating device for a converter valve aluminum radiating base. The corrosion inhibition method comprises the steps that pre-adsorption of 2-amino propane is conducted on the surface of the converter valve aluminum radiating base to form an organic film layer; and ultramicron zinc oxides react under the alkaline condition and are deposited on the surface of the converter valve aluminum radiating base to form a zinc coating. The coating device comprises a coating liquid capacity box. A liquid outlet pipeline and a liquid return pipeline are arranged on the coating liquid capacity box. The liquid outlet pipeline communicates with a liquid inlet of a valve assembly. The liquid return pipeline communicates with a liquid outlet of the valve assembly. The converter valve aluminum radiating base is mounted in the valve assembly. A coating liquid injection pump is arranged on the liquid outlet pipeline. According to the corrosion inhibition method, the binding force of the zinc coating and the surface of the aluminum radiating base can be effectively improved, improves the corrosion inhibition capacity of the zinc coating and slows down corrosion of aluminum. The coating device is good in corrosion inhibition effect, simple in equipment, low in cost, easy to operate and low in maintenance cost.

Description

technical field [0001] The invention belongs to the field of metal corrosion and protection, and in particular relates to a corrosion inhibition method and a coating device for an aluminum cooling seat of a converter valve. Background technique [0002] The converter valve is the core component of the converter station to realize AC and DC exchange. The thyristor of the converter valve generates a lot of heat when it is working. In order to prevent the electronic components from being burned and damaged, deionized water is used as the coolant to cool down. The deionized water is in direct contact with the electronic components. In order to prevent electrolytic corrosion caused by the potential difference between different electronic components, a voltage equalizing electrode is installed in the internal cooling water system to eliminate the potential difference in the water circuit. However, due to the corrosion of the aluminum heat sink of the thyristor, Al(OH) 4 - and ot...

Claims

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Application Information

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IPC IPC(8): C23C20/04
CPCC23C20/04
Inventor 查方林刘凯吴俊杰冯兵何铁祥周舟王凌徐松
Owner STATE GRID CORP OF CHINA
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