Hot air duct triangular flexible large tie rod device

Abstract

The invention discloses a triangular flexible large pull rod device hot air pipelines, which belongs to the technical field of blast furnace top combustion type hot air furnaces. The device comprises a hot air main pipe, a hot air branch pipe, a hot air branch pipe compensator, a hot air valve and a hot air furnace shell, wherein a hot air furnace shell reinforcing ring is arranged on the hot air furnace shell, an upper hot air pipeline large pull rod support base is arranged in a cross position where the hot air branch pipe is connected with the hot air main pipe; two groups of triangularly arranged flexible large pull rods are adopted to integrally connect the hot air furnace shell reinforcing ring with a flexible large pull rod support base in a connection manner of welding or bolt connection. To connect conveniently, a connecting plate can be arranged. The device has the advantages that the raising of the hot air furnace shell can be effectively absorbed, the stress of the pipe shell and the furnace shell is reduced, the security of the hot air furnace and the pipelines is improved, and the device is particularly applicable to top combustion type hot air furnaces of which the hot air outlet is relatively high and the furnace shell raising amount is relatively large.

Description

technical field [0001] The invention belongs to the technical field of blast furnace top-fired hot blast stoves, and in particular provides a triangular flexible large tie rod device for hot blast pipes, which overcomes the blind plate force of the pipes and can absorb the thermal expansion of the hot blast stove shell at the same time, and is suitable for ironmaking processes The hot blast branch pipe of the medium hot blast stove is used to connect the hot blast stove and the pipeline. Background technique [0002] In the development history of blast furnace ironmaking technology, the successful application of hot blast stove undoubtedly has a special status. The use of hot air smelting in blast furnaces has played an important role in saving metallurgical coke with limited reserves, reducing energy consumption, increasing blast furnace output, and reducing steel costs; it also improves energy utilization and reduces CO 2 Emissions have an important and positive impact on...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a hot blast pipe triangular flexible large tie rod device, which can effectively solve the expansion problem of the steel structure of the top-fired hot blast stove 5 and the hot blast branch pipe 2 after being heated, and at the same time ensure that the steel structure, especially the hot blast stove The junction of the shell 5 and the hot blast branch pipe 2 and the fork between the hot blast branch pipe 2 and the hot blast main pipe 1 will not be excessively deformed under the action of the blind plate force, so as to protect the stability of the masonry structure and improve the operation of the hot blast stove during production. security

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