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Two-stage piston pusher centrifuge accelerating disc flow field visualization method

A two-stage piston and centrifuge technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve intuitive programming, strong compatibility, and wide applicability

Inactive Publication Date: 2012-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on this part of the structure at home and abroad. Only some foreign centrifuge manufacturers have mentioned the installation of guide blocks to improve the movement of materials, but they are all used to filter suspensions.

Method used

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  • Two-stage piston pusher centrifuge accelerating disc flow field visualization method
  • Two-stage piston pusher centrifuge accelerating disc flow field visualization method
  • Two-stage piston pusher centrifuge accelerating disc flow field visualization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Here, the application of this method is explained by taking the acceleration plate of the P-60 two-stage piston pusher centrifuge as an example. In this example, the acceleration disk has no guide structure, the blade type is a cylindrical blade, and the blade curve is a controllable wrap angle curve. as per figure 1 The steps shown are set up and calculated.

[0082] Step 101, start the parameterized modeling calculation program of the accelerator disk;

[0083] Step 102, select the model of the two-stage piston pusher centrifuge as P-60 through the interface operation, the corresponding drum radius is 280mm, and the input model height is 50mm;

[0084] Step 103, set model inlet parameters, material inlet radius R 10 40mm, gas phase inlet radius R 20 is 80mm, and the length of the inlet section is 40mm;

[0085] Step 104, select the blade type as cylindrical blade;

[0086] Step 105, setting blade parameters, inner radius R 1 90mm, outer radius R 2 is 260mm, th...

Embodiment 2

[0100] Embodiment 2 improves on the basis of Embodiment 1, and operates as follows:

[0101] Steps 101-105 are the same as in Embodiment 1;

[0102] Step 106, setting the diversion structure as pointed cone diversion, the height of the diversion structure is 45mm, which is 50mm smaller than the height of the blade, and the radius of the bottom surface of the diversion structure is 80mm, which is 90mm smaller than the inner radius of the blade;

[0103] Steps 107-116 are the same as in Embodiment 1;

[0104] Step 117, extract flow field simulation results Figure 8 It is the change of material mass flow rate at the outlet with time. The shorter the time required for the material to reach the maximum flow rate, the faster the acceleration plate accelerates the material, and the smaller the accumulation of materials inside the accelerator plate; Figure 9 is the material tangential velocity distribution at the outlet; Figure 10 is the material radial velocity distribution at ...

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Abstract

The invention relates to a two-stage piston pusher centrifuge accelerating disc flow field visualization method. The method comprises the steps that: accelerating disc parameterization modeling and flow field calculation of a parameterization model are realized by using a figure interface and a computer; material motion situations obtained by calculating are outputted; certain design of the accelerating disc can be carried out by a user to form a reasonable accelerating disc structure based on requirements for material motion; basis for analyzing material acceleration effect realized by the accelerating disc is provided by choosing a two-stage piston pusher centrifuge model, choosing a blade type, choosing a flow guide structure, calling Gambit software, automatically carrying out meshing and boundary condition setting, setting material parameters, calling Fluent software and outputting material motion speed results. According to the invention, parameterization setting of various structures of the accelerating disc is carried out, and a plurality of choices for the flow guide structure and the blade type can further be carried out; from the perspective of extensive applicability, a good design platform is provided for common technical staff.

Description

technical field [0001] The invention relates to a visualization method for the flow field of an acceleration disc of a two-stage piston pusher centrifuge; modeling and calculation techniques for the acceleration disc of a two-stage piston pusher centrifuge, in particular to the parameterized construction of different flow guide structures and blade forms in the acceleration disc The model method and the transient turbulence calculation method of the accelerator disk. Background technique [0002] Due to the characteristics of continuous operation, high separation efficiency, large production capacity, low moisture content of filter cake, and compact device, the two-stage piston pusher centrifuge is widely used in chemical, metallurgy, coal, pharmaceutical, textile and other industries, and has achieved It has achieved significant economic and environmental benefits, so its performance research has been valued by designers and scientific researchers at home and abroad. [00...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 谭蔚乔琳
Owner TIANJIN UNIV
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