Thermal leak detector for a heat-insulation-lined tank for low-temperature liquids

摘要

This invention relates to a heat-insulation-lined storage tank for low-temperature liquids having a liquid-impervious layer secured on the inside of the tank shell through a heat-insulation layer. The tank of this invention has a second barrier impervious to liquids inside the heat-insulation layer and temperature-sensing members for electrically or electromagnetically detecting low temperatures inside or along the second barrier, thereby providing a storage tank for low-temperature liquids capable of detecting breaks of the liquid-impervious layer. The members for electrically or electromagnetically detecting low temperatures may be thermocouples, resistors for temperature measurement, temperature-sensing magnetic substances, and coil temperature-sensing magnetic substances.