THERMOPILE FOR BRIDGE SUPPORTS Russian patent published in 2012 - IPC E02D3/115 

FIELD: construction.

SUBSTANCE: invention relates to devices for seasonal cooling and freezing of soils of building and structure bases in regions of permafrost soils distribution. A thermopile comprises a tight ground capacitor body, filled with vapours of a low-boiling liquid in a saturated condition - a coolant, and having an additional contact of its inner space with atmosphere via a through air duct accessory, an underground part - an evaporator in the form of curvilinear pipelines partially filled with a low-boiling liquid coolant, circulating along ascending and descending branches, arranged in a "cold well" filled with liquid freezing below 0°C, and a transport section of pipelines connecting inner spaces of above-ground and underground parts of the thermopile. The air duct accessory is arranged in the form of a vertical pipe - an air hole, with length and diameter comparable with length and diameter of the body and sufficient for location of the nozzle of the upper end of the pipeline branch in the upper space of the body with an ascending coolant flow, and the "cold well" is arranged in a support pile of the bridge and is filled with an aqueous solution of salt, for instance, NaCl, with concentration providing for the specified temperature of solution freezing and required temperature of soil maintenance in solid frozen condition, on the upper level of the "cold well" filling solution there is a layer of heat insulation with the possibility of free displacement in the inner space of the "cold well" or its compaction in case of solution level deviations.

EFFECT: higher efficiency of a thermopile due to increased intensity of heat exchange in a "soil-atmosphere" system, extension of time of soil keeping in a solid frozen condition around the underground part of the thermopile and reduced labour intensiveness.

3 cl, 2 dwg