Storage and transportation system for dry ice

Abstract

The invention discloses a storage and transportation system for dry ice, and relates to the technical field of solid storage equipment. The storage and transportation system comprises a base; the upper surface of the base is fixedly connected with a dry ice storage box; the dry ice storage box is sleeved with a sealed refrigeration cover; a hollow column is fixedly mounted on the upper surface ofthe sealed refrigeration cover; the bottom of the hollow column is in communication with the top of the dry ice storage box; the inner bottom of the hollow column is fixedly connected with a pressurerelief mechanism; a through hole is formed in the top of the hollow column; and the top of the hollow column is fixedly connected with a gas buffer chamber. By arranging the pressure relief mechanismcomprising a spring and a sealing block, when air pressure in the dry ice storage box is high, the sealing block is pushed upwards, sublimated carbon dioxide gas penetrates through the through hole, pressure reduction in the dry ice storage box is achieved, and the transportation safety is improved; the dry ice storage box is sleeved with the sealed refrigeration cover, the temperature in the dryice storage box is kept below the melting point of dry ice, the sublimation speed of the dry ice is effectively decreased, and loss of the dry ice is avoided.

Description

technical field [0001] The invention belongs to the technical field of solid storage equipment, in particular to a storage and transportation system for dry ice. Background technique [0002] Dry ice is solid carbon dioxide, which is obtained by condensing carbon dioxide into a colorless liquid under a pressure of 6250.5498 kPa, and then rapidly solidifying under low pressure. Dry ice is a white ice-like solid with a density higher than that of ordinary ice. Its melting point is -78.5°C. When the temperature is higher than this, dry ice will sublimate into carbon dioxide gas. During the sublimation process of dry ice, white gas will be seen, while carbon dioxide It is a colorless gas. This white gas is not carbon dioxide fume, but water mist. When carbon dioxide changes from solid to gas, it absorbs a lot of heat, which makes the temperature of the surrounding air drop quickly. The solubility of the water vapor becomes smaller, and the water vapor undergoes a liquefaction r...

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Problems solved by technology

[0004] The object of the present invention is to provide a storage and transportation system for dry ice. Through the design of dry ice storage box, sealed refrigeration cover, pressure relief mechanism, constant temperature control mechanism and liquefaction box, the problem of dry ice extremes in the existing dry ice storage and transportation process is solved. Easy to sublimate, easy to explode under sealed conditions, threatening the life safety of transport personnel

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