EP 1448985 A2 20040825 - DEVICE, ESPECIALLY FOR PROTECTING AGAINST OIL PENETRATION IN A GAS-FILLED MEASURING CHAMBER WHICH IS ARRANGED ON A TRANSFORMER CHAMBER FILLED WITH TRANSFORMER OIL, AND HEATING DEVICE
Title (en)
DEVICE, ESPECIALLY FOR PROTECTING AGAINST OIL PENETRATION IN A GAS-FILLED MEASURING CHAMBER WHICH IS ARRANGED ON A TRANSFORMER CHAMBER FILLED WITH TRANSFORMER OIL, AND HEATING DEVICE
Title (de)
DETEKTIONSVORRICHTUNG FÜR EINEN ÖLEINBRUCH IN DIE MESSKAMMER EINES MITTELS MEMBRAN MIT EINER TRANSFORMATORKAMMER VERBUNDENEN GASSENSORS, SOWIE HEIZEINRICHTUNG FÜR TRAFOÖL
Title (fr)
DISPOSITIF POUR DETECTION DE PENETRATION D'HUILE DANS LA CHAMBRE DE MESURE D'UN CAPTEUR DE GAZ RELIE A UNE CHAMBRE D'UN TRANSFORMATEUR A L'AIDE D'UNE MEMBRANE, ET DISPOSITIF DE CHAUFFAGE POUR L'HUILE DE TRANSFORMATEUR
Publication
Application
Priority
- DE 0204337 W 20021126
- DE 10158746 A 20011130
Abstract (en)
[origin: WO03048719A2] Oil-cooled transformers are often monitored by means of a measuring chamber (1) for the presence of hydrogen, hydrogen indicating cracking products dissolved in the transformer oil. The hydrogen can diffuse from the transformer chamber (2) to the measuring chamber (1) by means of a gas-permeable membrane. In the event of leakage, however, the transformer oil (11) can also penetrate the measuring chamber, which can lead to, inter alia, measuring errors. According to the invention, the gas sensor (10) of the measuring chamber (1) is arranged in such a way that, in the event of oil penetration, it is at least partially submerged in the oil, and can thus detect said oil penetration. In another embodiment of the invention, the measuring accuracy is improved by means of a heating device (7) located in the region of the membrane (3). A closing body (82) can also be provided for preventing the penetration of the transformer oil.
IPC 1-7
IPC 8 full level
G01N 33/28 (2006.01); G01N 1/22 (2006.01); G01N 33/00 (2006.01)
CPC (source: EP)
G01N 33/2841 (2013.01); G01N 33/005 (2013.01); G01N 2001/2232 (2013.01)
Citation (search report)
See references of WO 03048719A2
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
WO 03048719 A2 20030612; WO 03048719 A3 20040415; DE 10158746 A1 20030618; EP 1448985 A2 20040825
DOCDB simple family (application)
DE 0204337 W 20021126; DE 10158746 A 20011130; EP 02804148 A 20021126