Split type water jacket with diversion water tank and assembly method

Abstract

The invention provides a split type water jacket with a diversion water tank and an assembly method. The split type water jacket with the diversion water tank comprises an inner arc half water jacket, an outer arc half water jacket, a sealing element, a fastening element and a positioning pin group; wherein the water jacket are two separated bodies by using the centerline of a crystallizer cylinder as a dividing line; an angular water path, a side surface water path and an arc surface water path are arranged in each separated body; an inner cavity of each water jacket is provided with ribs; a diversion water tank is formed between every two adjacent ribs; and crisscross rib plates are distributed at the outer side of the water jackets. When the water sleeves are assembled, the inner arc half water jacket, an outer arc half water jacket are combined according to design dimensions firstly and then are integrally processed; after being processed, the inner arc half water jacket, an outer arc half water jacket are assembled in a crystallizer; combining surfaces are sealed; positioning pins are arranged between the combining surfaces for positioning; and bolts are arranged between the combining surfaces for fastening. According to the split type water jacket, the controllability of cooling water joints is structurally ensured; the deviation between the center of a circle of a copper pipe circular arc and the center of a casting machine can be avoided; the heat exchange effect of the water joints is beneficial for improving; and the production and operation cost is reduced.

Description

Technical field [0001] The invention relates to a split water jacket with a diversion water tank and an assembly method, in particular to a water jacket used for a crystallizer of a high-efficiency billet continuous casting machine in the metallurgical industry, belonging to the technical field of metallurgical continuous casting. Background technique [0002] The mold is a key component of the continuous casting machine. It is composed of a copper tube, a water-guiding water jacket coated on the outside of the copper tube, and an electromagnetic stirrer. The mold of the billet continuous casting machine is designed to ensure molten steel under the condition of high drawing speed. The shell is uniformly shaped in the crystallizer and reaches a certain thickness of the blank shell at the exit of the crystallizer. It is required that the periphery and corners of the crystallizer are cooled uniformly and have sufficient cooling efficiency. In the known mold, the copper tube is m...

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Problems solved by technology

[0003] On the other hand, the copper tube of the existing mold is directly connected to the cylinder of the crystallizer, and the upper end surface of the mold at the connection and the clamping groove are positioned by the circular arc of the shape of the copper tube. Manufacturers often ignore that the copper tube is formed after forming The change of the arc is the designed arc by default. Therefore, once the arc changes greatly, it will cause a large deviation between the center of the arc of the copper tube and the center of the casting machine. When the casting machine is produced at a high casting speed , it is easy to cause uneven shell growth, or even breakout and other problems

[0004] It is known that the water diversion jacket of the crystallizer is formed by stamping and welding of stainless steel plates. Since the dimensional accuracy is difficult to guarantee during the processing, uneven water gaps between the water diversion jacket and the copper tube of the crystallizer are easy to occur during work, which directly leads to Uneven shell growth

Chinese invention patent "a method for forming turbulent flow of cooling water in continuous casting crystallizer and crystallizer" (application number: 200810079470.6 application date: 2008-09-25) discloses turbulent cooling water continuous casting crystallizer, working water jacket The uneven water gap formed between the outer surface of the crystallizer makes the cooling water flow in a turbulent form, which enhances the heat exchange effect of the cooling water. The disadvantage is that this structure cannot ensure the uniformity of the water gap between the water jacket and the copper pipe. Consistency, resulting in uneven turbulent flow; the utility model patent "arc tube type crystallizer" (application number: 200920105634.8 application date: 2009-02-04) discloses that there are multiple gaps between the inner water jacket and the copper tube The disadvantage of the adjustment part is that in the actual use process, when there is uneven water seam, it is difficult to adjust, and it cannot be strictly adjusted to achieve uniform water seam

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