Shiqiang Chen

Application and Numerical Investigation of Novel Dust-Controlling Equipments of Main Fan Diffuser in Industry Square of Coal Mine

Based on parameters of main fan diffuser in such a coal mine, the paper set forward two novel types of dust-controlling equipment, and the physical models of two equipments are constructed. Kinetic and dynamic fields of two-phase flow in two equipments are numerically calculated, and the both coefficients of performance are comparatively analyzed. The results are shown as follows: (1) in the condition of non-dust-controlling equipment, the dust pollutes the industry square of the coal mine; (2) the two novel dust-controlling equipments can decrease the quantity of escaping dust; (3) the efficiency of dust controlling of equipment of closed-baffles diffuser is higher than that of the non-baffle diffuser; (4) the energy consumed of equipment of enclosed-baffles diffuser is lower than that of non-baffle diffuser. According to technique and engineering, the reformation application is dust-controlling equipment of non-baffle, the data are shown that the novel equipment can control partly the dust escaping, and the dust pollution can be relieved in the industry square of coal mine.

Reviews and Prospects of Structural Energy-Saving of Main Fan Diffuser

Main fan diffuser is equipment of energy-recycling for main fan. On the basis of technology situation of main fan, in the view of structural energy-saving of main fan diffuser, new way of energy-saving of main fan is discussed, and consisting diffusers and their technology level of structural energy-saving are summarized, and common problems of structural energy-saving of diffuser are deduced out, and consisting realization approaches of structural energy-saving of diffuser are reviewed, and technology approaches of structural energy-saving in related fields are overviewed. From the above, problems of needing to explore is prospected for structural energy-saving of main fan diffuser.

Numerical Simulation Investigation of Dust-Controlling Equipment of Main Fan Diffuser of Coal Mine

In order to decrease coal dust pollution of industry square, two types of dust-controlling equipment of main fan diffuser of coal mine are designed by virtue of inertia separation and gravity sedimentation. On the basis of field conditions, the physical models of two equipments are constructed. In application of Computational Fluid Dynamics (CFD), dynamic and kinetic fields of two-phase flow in two equipments are researched. The results show that the application of dust control equipment of main fan diffuser is available approach of decreasing coal dust pollution in industry square of coal mine.