Patent · US Expired

Air demoisturizer for oil-insulated transformers, chokes and tap changers

US6709496B2 · kind B2 · utility

5Cited by

6References

17Claims

0Family size

Assignee

Messko Albert Hauser GmbH & Co. KG · DE

Inventors

Karsten Viereck · Teisendorf, DE
Rainer Brill · Nidda, DE
Kurt Kugler · Lappersdorf, DE
Werner Krüger · Birkenfeld, DE

Key dates

Filing date	Nov 13, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Nov 13, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2259/40096
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An air demoisturizer for an oil expansion vessel of an electrical power unit like an oil-filled transformer, tap changer or choke, has a heating element in the body of absorbent and utilizes a heat-regeneratable absorbent which is cut off by a moisture detector from the oil expansion vessel when the absorbent is saturated and is thermally regenerated. The demoisturizing column is provided in line with an oil receiver through which the dry air is passed before reaching the oil expansion vessel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.