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Water-cooled mouth of a converter and its preparation process

A preparation process and water-cooled furnace technology, applied in the manufacture of converters, etc., can solve the problems of cracks in the cast iron at the mouth of the water-cooled furnace, and the two ends of the water pipe are easily burned out by high temperature, so as to increase the heat transfer, reduce the consumption, The effect of increased dwell time

Active Publication Date: 2019-01-25
四川大信重工机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: aim at the "steel box frame type" water-cooled furnace mouth, where the two ends of the water pipe are easily burned by high temperature due to uneven water flow, and the cast iron with the water-cooled furnace mouth existing in the "S"-shaped steel pipe cast iron water-cooled furnace mouth To solve the problem of cracks, the utility model provides a converter water-cooled furnace mouth and its preparation process

Method used

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  • Water-cooled mouth of a converter and its preparation process
  • Water-cooled mouth of a converter and its preparation process
  • Water-cooled mouth of a converter and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0058] The technical solution of this embodiment is: a water-cooled furnace mouth of a converter, the water-cooled furnace mouth of the converter is composed of two semicircular furnace mouth boxes 100 with the same structure in a circular splicing, and the semicircular furnace mouth box 100 includes an upper and lower set The semicircular panel 9 and the semicircular bottom plate 7 and the water pipes 2 fixedly connected to the inside of the semicircular panel 9 and the inside of the semicircular bottom plate 7; A first partition 4 and a second partition 6 parallel to the water pipe 2, the first partition 4 and the water pipe 2 form a first water flow channel 11, and the first partition 4 and the second partition 6 form a second water flow channel 12. At least one of the first water flow channel (11) and the second water flow channel 12 is provided with a number of baffles 5, and adjacent baffles 5 are staggered; the water pipe 2, the first water flow channel 11 and the second...

Embodiment 2

[0061] On the basis of Embodiment 1, the technical solution of this embodiment is: the water inlet device 1 is a rectangular cavity structure; one side of the rectangular cavity structure is connected with the first partition 4 and the second partition 6, and the rectangular cavity structure The cavity structure is connected with a water inlet pipe 101, one side of the rectangular cavity structure communicates with the water pipe 2 and a third water outlet 103 is provided at the connection point, and the other end of the water pipe 2 communicated with the rectangular cavity structure is provided with a connection with the water pipe 2. The first water outlet 3 communicated with the first water flow channel 11, the other end of the first partition plate 4 communicated with the water pipe 2 is provided with a second water outlet 8 communicated with the second water flow channel 12, the The other end of the second water flow channel 12 communicating with the first remote water flo...

Embodiment 3

[0064] On the basis of Embodiment 2, the technical solution of this embodiment is: the third water outlet 103 is provided with a first baffle plate group 102 along the radial direction of the cross-sectional circle of the water pipe 2, and the first baffle plate group 102 and The ends of adjacent water pipes 2 form a first cavity 201; the first water outlet 3 is provided with a second baffle plate group 301 along the radial direction of the cross-sectional circle of the water pipe 2, and the second baffle plate group 301 is adjacent to The end of the water pipe 2 forms a second cavity 202 .

[0065] like image 3 , Figure 6 and Figure 8 As shown, when the cooling water flows through the third water outlet 103, a small part of the water enters the first cavity 201, thereby avoiding the phenomenon that the end of the water pipe 2 close to the first baffle group 102 is burned due to lack of water. ; When the cooling water flows through the first water outlet 3, a small part ...

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Abstract

The invention discloses a converter water-cooling furnace mouth, which is formed by ringwise splicing two semi-circular furnace mouth boxes with same structure. Each semi-circular furnace mouth box comprises a semi-circular panel and a semi-circular bottom plate arranged up and down; a first clapboard and a second clapboard parallel to a water pipe are arranged between each semi-circular panel and each semi-circular bottom plate; each first clapboard and the water pipe form a first water flow channel; each first clapboard and each second clapboard form a second water flow channel; a plurality of baffle plates are arranged in at least one of the first water flow channel and the second water flow channel; each two adjacent baffle plates are arranged in a staggering way; a two-circuit and three-pass structure is arranged, so that the retention time of cooling water in the furnace mouth is increased, and the usage amount of the cooling water is saved; with the baffle plates, paths for the cooling water to flow through are increased, the flow rate of the cooling water is increased, and the heat transfer efficiency is improved; and a preparation process is characterized by adopting a v-shaped groove for welding, slotting the welding port into the v-shaped groove after finishing welding, and re-welding, wherein the process is repeated for 3 to 5 times.

Description

technical field [0001] The invention belongs to the technical field of converter accessories, and in particular relates to a water-cooled mouth of a converter and a preparation process thereof. Background technique [0002] The domestic use of oxygen top-blown converter steelmaking is carried out at a high temperature above 1600 °C. The furnace body of the converter is generally composed of three parts: the furnace cap, the furnace shell and the furnace bottom. In order to prolong the service life of the metal shell and the furnace lining of the furnace cap, a round furnace opening is generally arranged on the top of the furnace cap, so that the material can be inserted into the oxygen lance and discharged from the furnace during work. Gas and slag dumping, in order to protect the furnace mouth, circulating water is generally used to cool the furnace mouth. At present, the usual water-cooled furnace mouth has two structural forms: one is that the "S"-shaped steel pipe is pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/46
CPCC21C5/46C21C5/4646
Inventor 李斌
Owner 四川大信重工机械制造有限公司