Refrigerating device and method of mining escape capsule

Abstract

The invention discloses a refrigerating device and a method of a mining escape capsule, belonging to the field of safe rescue and environment control in a sealing space. The refrigerating device comprises a carbon dioxide steel bottle, a pipeline, a primary decompression throttling valve, a primary bypass valve, a primary thermometer, a primary capillary tube evaporator, a secondary decompression throttling valve, a secondary bypass valve, a secondary thermometer, a secondary capillary tube evaporator, an exhaust adjusting valve and a pneumatic air blower. According to the refrigerating method provided by the invention, conversion elements are connected and arranged on the primary capillary tube evaporator and the secondary capillary tube evaporator in series and in parallel, so that the use ratio of the refrigeration capacity of refrigerating fluid can be effectively increased, and the loss of the refrigeration capacity can be reduced; and furthermore, the primary thermometer and the secondary thermometer are arranged, so that the controllability of the device operation can be improved. The refrigerating device and the method provided by the invention have the advantages of safe and reliable properties, flexible and convenient adjustment, energy conversation, environmental protection, and high economical benefits and the like.

Description

technical field [0001] The invention relates to a refrigeration device and method for a mine rescue cabin, belonging to the field of safe lifesaving and environment control in confined spaces. Background technique [0002] In response to the serious situation of frequent mine safety production accidents in China, the relevant regulatory authorities require underground mines to improve production safety facilities and complete the installation of six major devices such as emergency avoidance before June 2013, so as to deal with various sudden dangers and reduce Accidents and casualties. As a new type of emergency avoidance equipment, the mine rescue cabin can provide a safe refuge for those in distress underground who cannot evacuate in time. Combined with active self-rescue, it plays a vital role in making the rescue work scientific and effective. [0003] The domestic mine safety situation is severe, and the development of rescue cabins is urgent. The space inside the ca...

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Problems solved by technology

[0004] However, high-pressure carbon dioxide open refrigeration devices also face more technical problems.

The operating pressure of the device is high; the volume of liquefied gas required is large, and the storage cylinder takes up a large space; the carbon dioxide contains moisture, which is likely to cause ice blockage in the pipeline; as the flow rate of liquid carbon dioxide decreases, the cooling capacity released is not enough to balance The heat load in the cabin and the temperature and humidity in the cabin will gradually rise, so considering the actual cooling efficiency, generally only 70% to 75% of the carbon dioxide in the steel cylinder in the traditional refrigeration device is used, which undoubtedly causes energy and space constraints. waste

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