Minitype constant potential rectifier

Abstract

The invention discloses a minitype constant potential rectifier which comprises a positive electrode, an electric water heater liner, a power supply terminal, a power line and an input terminal, wherein a constant potential control module is arranged between the power line and the input terminal, the power supply terminal is welded in a circuit board inside a nut, the input terminal is connected to a positive electrode base, the positive electrode is installed in the middle of the positive electrode base, a potential sensor is installed beside the positive electrode, an external thread connection seat is arranged at the upper end of the positive electrode base and connected to the electric water heater liner, a fixing nut at the connection part of the positive electrode and the external thread connection seat is filled and sealed with epoxy resin, and the positive electrode, the potential sensor and the external thread connection seat extend into the electric water heater liner to be in contact with the liquid in the electric water heater liner. The minitype constant potential rectifier is long in service life, has no pollution, and can control the anti-corrosion potential stably within a required scope.

Description

technical field [0001] The invention relates to the technical field of electrochemical anticorrosion, in particular to a miniature potentiostat. Background technique [0002] The anti-corrosion project of electric water heater liner belongs to the scope of electrochemistry, and its theoretical root comes from the principle of cathodic protection. Cathodic protection is an electrochemical term. It is to add a large number of electrons to the metal to be protected, so that the metal to be protected is in a state of excess electrons as a whole. Each point on the metal surface reaches the same negative potential, and the metal atoms are not easy to lose electrons. It turns into ions and dissolves into the solution to achieve cathodic protection for metals. At present, the scope of application includes electric water heaters, solar water heaters, instant water heaters, boilers, water dispensers, metal water towers and other equipment. However, when the volume of the inner t...

Images