Anti-corrosion sterilization device and process for high-power frequency converter seawater cooling pipeline

Abstract

The invention discloses an anti-corrosion sterilization device and process for a seawater cooling pipeline of a high-power frequency converter. The device comprises a metal pipe fitting for circulating cooling seawater, a graphene electrode and an external power supply, wherein the metal pipe fitting, the graphene electrode and the external power supply are electrically connected, the metal pipe fitting is a negative electrode and the graphene electrode is a positive electrode so that a current path is formed to electrolyze the cooling seawater of the pipe fitting, NaClO, HClO and chlorine aregenerated, breeding and accumulation of microorganisms such as bacteria and algae in the pipe are prevented, an inner wall is kept clean, and the heat exchange effect is guaranteed, besides, the metal pipe fitting is a white copper pipe with an inner surface plated with titanium, seawater corrosion resistance is high, corrosion resistance of the cooling pipe is guaranteed, and stable operation ofthe system is effectively guaranteed. The device is advantaged in that the seawater is adopted as a cooling medium, cost does not need to be considered, the titanium dioxide-plated copper pipe can beused as a heat-conducting medium and can further be used as a cathode for chemical sterilization, so equipment investment is greatly simplified, the occupied space is reduced, and the titanium dioxide-plated copper pipe has good practical and economic values.

Description

technical field [0001] The invention relates to an anti-corrosion and sterilization device and a process for a seawater cooling pipeline of a high-power frequency converter. Background technique [0002] As human activities on the ocean increase, ships are increasingly using efficient all-electric propulsion technology. The inverter module is a high-power device, which will dissipate a large amount of heat in a short period of time. If it cannot be dissipated in time, it will cause the control system to reduce the operating power, directly affect the speed of the ship, or even shut down or burn out of thermal runaway. Therefore, it is necessary to configure a high-efficiency heat dissipation device to dissipate the heat energy into the environment in time. In the ocean, the cheapest and most effective medium is seawater, but the use of seawater will cause two problems: 1) the high salinity of seawater corrodes the metal pipe fittings, resulting in perforation and leakage; 2...

AI Technical Summary

Problems solved by technology

In the ocean, the cheapest and most effective medium is seawater, but using seawater will cause two problems: 1) The high salinity of seawater corrodes metal pipe fittings, resulting in perforation and water leakage; 2) Microorganisms grow on the pipe wall, affecting the heat transfer effect

There are many ways to solve these two problems, such as internal surface coating treatment, sacrificial anode protection, but it is difficult to achieve long-term stability at the same time, requiring frequent replacement of equipment and increasing costs

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