Vertical semi-continuous casting machine crystallizer cooling device

Abstract

The invention discloses a vertical semi-continuous casting machine crystallizer cooling device. The vertical semi-continuous casting machine crystallizer cooling device comprises an outer sleeve which sleeves a crystallizer; the upper end of the outer sleeve is connected with the crystallizer through an upper flange; the lower end of the outer sleeve is connected with the crystallizer through a lower flange; a heat exchange chamber is formed between the inner wall of the outer sleeve and the outer wall of the crystallizer; a first cooling water return chamber, a first cooling water inlet chamber and a second cooling water inlet chamber which are communicated with the outside are formed on the outer chamber from top to bottom in turn; the lower portion of the outer sleeve is provided with a bottom communication opening which is communicated with the bottom of the heat exchange chamber; the upper portion of the outer sleeve is provided with a top communication opening which is communicated with the top of the heat exchange chamber; the lower flange is provided with a water injection hole which is communicated with the second cooling water inlet chamber. According to the vertical semi-continuous casting machine crystallizer cooling device, the problems that the crystallization quality of casting products is affected due to the facts that the heat exchange area is small, the heat exchange effect is poor, and the difference of the cooling water temperature transition is large in the traditional crystallizer cooling device are solved and meanwhile the primary cooling water can be used after cooling and accordingly the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of the metallurgical industry, in particular to a crystallizer cooling device for a vertical semi-continuous casting machine. Background technique [0002] The traditional vertical semi-continuous casting machine crystallizer cooling device is mainly composed of an outer jacket 3, an upper flange 8 and a cooling ring 18 (such as figure 1 shown), the cooling method is that the first cooling water enters the A chamber, passes through the heat exchange chamber 6, and flows out through the lower port of the crystallizer 5 to realize primary cooling; the second cooling water enters the B chamber of the cooling ring, and directly flows to the liquid-solid The solid product 1 below the product 4 is sprayed to realize secondary cooling. [0003] This traditional crystallizer cooling device causes the temperature gradient of the first cooling water to be opposite to the direction of the temperature gradient of the c...

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Problems solved by technology

[0006] The object of the present invention is to overcome above-mentioned deficiencies in the prior art, provide a kind of crystallizer cooling device of vertical semi-continuous casting machine, its structure is simple, the design is reasonable and cooling effect is good, effectively solved the heat problem existing in traditional crystallizer cooling device Small exchange area, uneven cooling process, poor heat exchange effect, large temperature transition difference of cooling water, which affect the crystallization quality of castings. At the same time, the primary cooling water can be used after cooling, which greatly reduces the cost.

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