US 2019/0195697 A1 · THERMOMETER

Abstract

The invention relates to a thermometer, especially for determining the winding temperature of an electric power transformer. The invention is characterised in that, in a thermometer for determining the winding temperature of an electric power transformer, an electric temperature sensor, a mechanical temperature sensor and a heating element are arranged inside a coupling part formed from a heat-conductive material, and an insulating sleeve consisting of a thermally stable material is provided between an outer wall of the coupling part and an inner wall of the housing, the housing, the insulating sleeve and the coupling part forming a coaxial structure without leaving any air gaps such that thus definable heat transfers are generated between the individual components, namely the coupling part, the insulating sleeve and the tubular housing.

Claims6

Dependent claims

A thermometer for determining the winding temperature of an electrical power transformer, the thermometer comprising:

a tubular housing with a closed end and an open end;
a coupling member inside the housing holding an electrical temperature sensor and a mechanical temperature sensor and a heating element within the tubular housing, the coupling member being made from a material with good heat conductivity;
an insulating sleeve of a thermally stable material between an outer wall of the coupling member and an inner wall of the housing, the housing, the insulating sleeve and the coupling member forming a coaxial construction without an air gap such that definable heat transfers between the the coupling member, the insulating sleeve and the tubular housing, are thereby achievable.

Dependencies are inferred from the claim text.

Thermometer

Life of this patent

Thermometer

Life of this patent

Abstract

Claims6