A self-insulating flexible interlayer air duct for roadway or shaft excavation

Abstract

The invention relates to a self-insulating flexible interlayer blower for roadway or shaft excavation, which includes a main structure of the blower and matching connecting components. The main structure of the air duct includes two layers of inner and outer air duct cloth and an annular cloth, and the connecting component includes a hoop, a threaded rod, and an outer collar. The two ends of the inner fan cylinder are fastened and connected by hoops, and the outer fan duct is fixed on both sides of the outer ring by hoops. The cloth between the two ends of the head and the tail and the inner and outer layer of the fan cloth form a ring-shaped closed space. The numerical calculation method is used to obtain the wind The optimum interlayer thickness of the cylinder is 30mm, so that the thermal resistance value is the largest when the interlayer thickness is the highest, and the heat preservation effect of the air cylinder is the best. The interlayer air duct reduces the heat exchange between the cold air in the air duct and the external environment, so that the temperature of the cold air sent to the working face is close to the design standard; the design size of the interlayer air duct is standardized, so that the interlayer air duct under the corresponding design conditions is insulated Works best. The connection components are simple in structure and flexible in disassembly, which can save installation time and improve efficiency in actual operation.

Description

technical field [0001] The invention relates to an improved technology for a self-heat-insulating flexible interlayer air duct for roadway or shaft excavation, in particular to an interlayer air duct structure that can play the role of heat preservation and energy saving. Background technique [0002] With the continuous breakthrough of the mining depth of the mine, the problem of heat damage in the mine has also attracted more and more attention. The poor temperature and humidity environment in the deep-heat mine will not only endanger the physical and mental health of the underground workers, reduce the labor productivity, and even reduce the safety of production in the mine. pose a huge threat. In recent years, various measures have been adopted at home and abroad to cool the mine. The most common method is to use the refrigeration equipment (air conditioner) to send the cold air into the single-layer air duct through the local fan and then transport it to the working fac...

AI Technical Summary

Problems solved by technology

But this method is not economical. The inside of the air duct conveys low-temperature air, while the outer surface of the air duct is in a high-temperature environment, which makes the internal and external air flow have a large temperature difference. The heat is transferred from the high-temperature end to the low-temperature section to heat the cold air, resulting in actual The deviation between the temperature of the cold air reaching the working surface and the design temperature cannot guarantee the comfort of the deep environment

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