Belangrikheid van sirkulerende water in metaal smeltoond

In most metal smelting furnaces, the furnace body and the power cabinet have two independent water systems, an internal circulation system, an external circulation system, internal closed-circuit deionized water, and include a water-to-water heat exchanger, rectification Silicon, reactors, filter capacitors, inverter silicon, and resonance capacitors are all connected to this system. Since the internal water system circulates in the DC high voltage, the internal cooling water will generate electric ions under the action of the pipeline DC high voltage. After a period of time, the concentration of electric ions will gradually increase. When the concentration of electric ions exceeds the required value, the high DC voltage will corrode the copper joints through the cooling water with high concentration of ions, resulting in the situation seen in the photo below. If the water connector corrodes and breaks during use of the power supply, the pressurized cooling water will spray out, causing major equipment accidents, and the cooling water with high concentration of electric ions will reduce the insulation of the system, which is more likely to cause damage to the thyristor Therefore, the conductivity of the cooling water should be checked regularly, and it must be less than 10us/cm. If the conductivity is greater than 100us/cm, replace the circulating cooling water in all power cabinets, and it is recommended to replace it every six months.

Daar is nog ‘n probleem met die gebruik van geslote waterkoeling waaraan aandag gegee moet word. Die waterkoelingstelsel moet toegerus wees met ‘n uitlaatklep. In werklike gebruik word die meeste waterkoelingstelsels sonder ‘n uitlaatklep geïnstalleer. As die oond vir ‘n lang tyd buite werking is, kan gas maklik in die waterskeider kom. As die metaalsmeltoond weer begin word, bly ‘n deel van die gas in die waterskeider en die koelwaterkas van die komponente en kan dit nie ontlaai word nie, wat lei tot die mislukking van hierdie komponent. Die verkoeling van die sirkulerende water veroorsaak dat die temperatuur te hoog is om die komponente uit te brand. Daarom word die waterkoelingstelsel sonder ‘n afvoerklep lank nie gebruik nie, en word dit weer geaktiveer. Die waterklem op die hoogste punt van die waterskeider moet losgemaak word om die oorblywende gas te dreineer.