Sealed cabin system for phase-change heat exchange electrical equipment in high-altitude region

Abstract

The invention discloses a sealed cabin system for phase-change heat exchange electrical equipment in a high-altitude region. The sealed cabin system consists of a sealed cabin, an oxygen-enriched preparation unit, a bidirectional airflow control unit, a heat exchange unit, an airflow control unit, temperature sensors and a controller, wherein the sealed cabin is a heat-preservation, waterproof, airtight and pressure-bearing cabin body; the bidirectional airflow control unit is mounted at the bottom corner in the sealed cabin; the airflow control units are respectively mounted at the top and the bottom in the sealed cabin; the heat exchange unit is arranged outside the sealed cabin, and gas in the sealed cabin exchanges heat with a water body or a phase-change material through the heat exchanger; except the oxygen-enriched air bag, the oxygen-enriched preparation unit is arranged on one side, close to the edge, of the top in the sealed cabin; the temperature sensors are distributed on electrical equipment in the sealed cabin; and the controller is embedded into a cabin door of the sealed cabin and receives sensor data and equipment control. Through the technologies of compressed air, phase-change material heat exchange, a membrane nitrogen-oxygen separation device, directional temperature control and the like, dust prevention and fire prevention are achieved, the heat exchange efficiency is improved, and electrical equipment works without derating.

Description

technical field [0001] The invention relates to a sealed cabin. Background technique [0002] As we all know, the air at high altitudes is thinner, the lower the air density, the lower the atmospheric pressure, which increases the air viscosity coefficient, reduces the number of air molecules, and reduces the contact of molecules, which leads to the reduction of air convective heat transfer. [0003] For every increase of 1000 meters above sea level, the temperature drops by about 6.5°C and the atmospheric pressure drops by about 11KPa. At a height of 5000m, the atmospheric oxygen content and atmospheric pressure are about 60% of those in the plain area, the heat release coefficient is 21% lower than the value at sea level, and the heat transferred by convective heat exchange is also reduced by 21%, which will lead to a decrease in the temperature rise of the product Increase. [0004] According to Basson's law, the dielectric strength of the medium changes into a concave ...

AI Technical Summary

Problems solved by technology

At a height of 5000m, the atmospheric oxygen content and atmospheric pressure are about 60% of the plain area, the heat release coefficient is 21% lower than the value at sea level, and the heat transferred by convective heat exchange is also reduced by 21%, which will lead to a decrease in the temperature rise of the product. Increase

However, fires and explosions in energy storage battery cabinets often occur in newspapers. In addition to the battery itself, there are also reasons such as poor temperature control effect, dust accumulation reduces insulation strength, and meets the environment of combustion air.

However, the current countermeasures, such as the container-type energy storage automatic fire-fighting system, use sensors and other detection devices to detect temperature, smoke and combustion accidents before taking fire-fighting measures to control the fire. Most of them are post-event passive fire-fighting measures. Some property damage has been caused

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