Induced draft fan used for conveying high-temperature flue gas

Abstract

The invention discloses an induced draft fan used for conveying high-temperature flue gas, and belongs to the field of induced draft fans. According to the induced draft fan used for conveying the high-temperature flue gas, through the arrangement of a double-effect section, on one hand, passing high-temperature flue gas can be cooled; on the other hand, through the arrangement of a double-layer hydraulic net, flue gas dust large particles can be intercepted before flue gas enters a transportation pipeline, meanwhile, through cooperative use of lower unblocking rods and upper unblocking rods, when blocking occurs in an emergency, one circulating pipe can be blocked, operation of introducing gas and extracting gas is constantly repeated through the other circulating pipe so that the lower unblocking rods and the upper unblocking rods can move back and forth on a lower movable net and an upper fixed net, unblocking is achieved, and potential safety hazards are reduced; and compared with the prior art, the whole flue gas transportation process does not need to be stopped, the flue gas transportation efficiency is effectively guaranteed, a pipeline does not need to be manually disassembled, and then the unblocking cleaning difficulty is obviously reduced.

Description

technical field [0001] The invention relates to the field of induced draft fans, and more specifically relates to an induced draft fan for transporting high-temperature flue gas. Background technique [0002] The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Fan is the customary abbreviation for gas compression and gas conveying machinery in China. Generally speaking, fans include ventilators, blowers, wind generators and induced draft fans. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances ; Grain drying and selection, wind tunnel wind source and inflation and propulsion of hovercraft, etc. [0003] When the existing induced draft fan transports the hi...

AI Technical Summary

Problems solved by technology

[0003] When the existing induced draft fan transports the high-temperature flue gas, it generally only plays the role of increasing the pressure. However, due to the high temperature of the high-temperature flue gas, it usually contains more dust particles, and it is easy to block during the subsequent transportation process. The filter screen in the transportation pipeline is difficult to clean due to the slender pipeline and high temperature, and affects the transportation efficiency of high-temperature flue gas. In emergency situations, such as fire fighting, it is difficult to clean it in time, resulting in a greater safety hazard

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