Porous inner gusset plate of supporting ring of converter

Abstract

The invention relates to a porous inner gusset plate of a supporting ring of a converter, which belongs to the technical field of iron and steel industry. The porous inner gusset plate is characterized in that two semi-elliptical holes are symmetrically and respectively dug on every one of long edges on two sides of the inner gusset plate, which are connected with an inner side plate and an outer side plate of the supporting ring respectively, and a long shaft of the semi-elliptical holes on each side is the long edge of the side; and the radius of 1/4 round holes dug at four corners of the inner gusset plate is not less than R160mm. The gusset plate can improve the cooling conditions of the supporting ring of the converter at four corner parts thus reducing the maximal thermal stress of the supporting ring of the converter by 20%-30%; a cooling area of the inner and the outer side plates of the supporting ring of the converter is improved thus greatly reducing the cooling conditions in a high-temperature region; and the deadweight of the inner gusset plate is reduced, and the circulation area of cooling water flow in the supporting ring of the converter is improved simultaneously, so that the resistance loss and the production energy consumption of cooling water in the supporting ring and the converter are reduced. The bearing capacity is not reduced and the distribution of load in the supporting ring of the box-shaped converter is more uniform; and furthermore, the appearance is novel and attractive and the simple and stiff shape of the gusset plate for the ordinary engineering is changed.

Description

technical field [0001] The invention belongs to the technical field of iron and steel industry, and relates to a rib plate used inside a large and medium-sized converter support ring. Background technique [0002] In the converter ring, the internal ribs play the role of supporting the overall structure of the ring and transferring various loads. Due to the high temperature of the working environment of the converter support ring and the relatively large thermal stress at the same time, in the design of the inner rib plate of the traditional converter support ring, rectangular steel plates are generally used to open small holes at the four corners, such as figure 1 and 2 As shown, the four sides of the inner rib plate 5 of the traditional converter support ring respectively constitute four parts of the support ring (converter support ring upper cover plate 1, converter support ring inner plate 2, converter support ring lower cover plate 3, converter support ring 4) Welding...

AI Technical Summary

Problems solved by technology

Due to the high temperature of the working environment of the converter support ring and the relatively large thermal stress at the same time, in the design of the inner rib plate of the traditional converter support ring, rectangular steel plates are generally used to open small holes at the four corners, such as figure 1 and 2 As shown, the four sides of the inner rib plate 5 of the traditional converter support ring respectively constitute four parts of the support ring (converter support ring upper cover plate 1, converter support ring inner plate 2, converter support ring lower cover plate 3, converter support ring 4) Welding of the outer plate; the traditional method of opening a large hole in the center of the inner rib plate 5 of the converter support ring for cooling by water leads to poor cooling of the support ring at the four fillet welds and large thermal stress, which may easily cause the converter support ring to The welds at the corners are cracked, and this phenomenon is more common in large and medium-sized converter support rings

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