Combustion-supporting air conduit and stainless steel hood-type annealing furnace with same

Abstract

The invention discloses a combustion-supporting air conduit and a stainless steel hood-type annealing furnace with the same. The combustion-supporting air conduit disclosed by the invention is characterized by comprising an upper combustion-supporting air conduit, a lower combustion-supporting air conduit, an upper combustion-supporting air conduit sleeve and a lower combustion-supporting air conduit sleeve, wherein one end of the lower combustion-supporting air conduit sleeve is hermetically connected with one end of the lower combustion-supporting air conduit; the other end of the lower combustion-supporting air conduit sleeve is nested with one end of the upper combustion-supporting air conduit; on end of the upper combustion-supporting air conduit sleeve is hermetically connected with one end of the upper combustion-supporting air conduit; the other end of the upper combustion-supporting air conduit sleeve is hermetically connected with the outer wall of the lower combustion-supporting air conduit sleeve; and free extension of one end of the upper combustion-supporting air conduit and one end of the lower combustion-supporting air conduit caused by combustion-supporting air is not affected by length setting of the upper combustion-supporting air conduit sleeve and the lower combustion-supporting air conduit sleeve.

Description

technical field [0001] The invention relates to a water body magnetic activation device. Background technique [0002] In the production process of cold-rolled stainless steel strips, bell annealing furnaces are generally used for hot-rolling 400 series stainless steel coils, especially 430 steel grades, and 100% hydrogen is used as a protective atmosphere. The equipment of a single bell annealing furnace mainly includes a heating mantle 1', an inner mantle 5', a cooling mantle, a hearth, a valve station and a final cooling station. Among them, the maximum working temperature in the heating cover 1' is 970°C, the maximum working temperature in the inner cover 5' is 870°C, and the maximum annealing temperature of the strip steel is 870°C. The heating medium is generally gaseous fuel, such as LPG or natural gas or coke oven gas. The combustion-supporting air is directly extracted from the bell annealing furnace workshop by the fan attached to the heating hood 1' and enters t...

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Problems solved by technology

[0009] At the same time, the second technical problem solved by the present invention is to provide a stainless steel bell-type annealing furnace equipped with the combustion-supporting air pipeline. At the same time, it effectively prolongs the service life of the combustion air pipe and heat exchanger, greatly reduces the maintenance engineering and maintenance costs of the heating mantle, improves the efficiency of the bell annealing furnace, and saves energy

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