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Crystallizer model for flow field research in crystallizer and crystallizer flow field simulation method

A simulation method and crystallizer technology, applied in teaching models, instruments, educational tools, etc., can solve problems such as poor results, and achieve the effect of ensuring optimal results

Active Publication Date: 2018-07-31
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the current model used in the crystallizer water simulation experiment is simulating the flow field of the crystallizer, the vortex phenomenon is easily generated at the outlet of the model. The optimized flow field in the experiment does not work well in actual production

Method used

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  • Crystallizer model for flow field research in crystallizer and crystallizer flow field simulation method

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Embodiment 1

[0037] Such as figure 1As shown, a crystallizer model used in the study of the flow field in the crystallizer in this embodiment includes a crystallizer body 4, and the top of the crystallizer body 4 is provided with a submerged nozzle 3, which is connected to the water inlet pipe 1 Connected, the bottom of the crystallizer body 4 is provided with a water outlet, and the inside of the crystallizer body 4 is provided with a flow distributor 5 . Physical simulation is currently the main means of research on the flow field in the mold, and the establishment of the mold model is very important for the simulation results and the optimization effect of the mold flow field. During the research process, the applicant found that when using the existing crystallizer model for simulation, the vortex phenomenon is likely to occur at the outlet of the model, and the flow field generated by the eddy current will superimpose with the flow field of the crystallizer itself, which is not consid...

Embodiment 2

[0040] A kind of crystallizer model that is used for the study of the flow field in the crystallizer of this embodiment, its structure is basically the same as embodiment 1, and its difference mainly lies in: the shape and size of the flow distributor 5 and the inner cavity of the crystallizer body 4 match. The flow distributor 5 of this embodiment is installed at 180-200mm from the bottom of the crystallizer body 4, and its thickness is 18-22mm. The flow distributor 5 is processed with evenly distributed openings, and all the openings on the flow distributor 5 The total area S of is:

[0041]

[0042] where V m is the model velocity, A m is the cross-sectional area of ​​the model, V s is billet casting speed, A s is the billet cross-sectional area, Q s is the field flow, according to the formula Q s = The weight of molten steel in the ladle / the pouring period of the ladle is calculated. Through a large number of experiments, the applicant optimized the installation ...

Embodiment 3

[0044] A kind of crystallizer model that is used for the study of flow field in the crystallizer of this embodiment, its structure is basically the same as embodiment 2, and its difference mainly lies in: the first valve 101 and flowmeter 102 are arranged on the described inlet pipe 1, and A funnel 2 is provided on the water inlet pipe 1 close to the submerged nozzle 3 , and the funnel 2 is used for adding tracer into the crystallizer body 4 . The water outlet at the bottom of the crystallizer body 4 is connected to the water outlet pipe 6, the water outlet pipe 6 is provided with a second valve 601, and the crystallizer body 4 is provided with a conductivity meter, a DJ800 detection system and a wave height meter, and the crystallizer body 4. A video camera and a polarized light source 7 are arranged on the outside.

[0045] The water simulation experiment of the crystallizer flow field is based on the principle of the three theorems of similarity. The basic conditions for th...

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Abstract

The invention relates to a crystallizer model for flow field research in a crystallizer and a crystallizer flow field simulation method, and belongs to the technical field of continuous steel casting.The crystallizer model for flow field research in the crystallizer provided by the invention comprises a crystallizer body, wherein an immersion type nozzle is formed in the top of the crystallizer body; the immersion type nozzle is connected with a water inlet pipe; a water outlet is formed in the bottom of the crystallizer body; a flow distributor is arranged inside the crystallizer body. According to the invention, the flow distributor is added to the crystallizer model to avoid influence of vortex generated at an outlet of the model on a flow field in the crystallizer, so that the flow field in the crystallizer is more accurate. Then, a finite element software package ANSYS is adopted to establish a molten steel flow model in the crystallizer for simulating the flow field of molten steel in the crystallizer under various process conditions; water simulation experiment results are verified and compared; finally, the water simulation experiment results and numerical calculation results are combined with an actual site to perform optimized design on process operation parameters.

Description

technical field [0001] The invention relates to a mold model and a mold flow field simulation method for the study of the flow field in the mold considering the eddy current behavior, which is mainly used in the research of the flow field in the mold and the optimization of process operation parameters in the field of continuous steel casting technology. It is suitable for continuous casting of billets, slabs, round billets and all other types, especially in the field of continuous casting of ultra-thin special-shaped billets. Background technique [0002] The continuous casting process is the solidification and forming process of liquid metal including complex phenomena such as flow, mass transfer and heat transfer. Especially for the mold section of the continuous casting machine, the flow, mass transfer and heat transfer processes interact and affect each other. Research is very difficult, almost impossible. If the flow field in the mold is not properly controlled, the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/02
CPCG09B25/02Y02P10/20
Inventor 周俐张闯朱李艳李四军
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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