Research on improving the characteristics of axis flow
Due to the particularity of its own internal structure, the axial flow fan is based on its internal structure in order to better improve and upgrade based on its internal structure.As the main ventilation equipment of the mine, almost all shaft ventilation ventilator small air volume zone has pressure to decline and pick up with the air volume.It has caused serious waste of equipment resources, and it constitutes the serious safety hazards of the ventilator itself.Especially as the main fan of coal mines, with the mining of mines, the increase in ventilation resistance in the mine, the operational conditions are easy to fall into the hump area.The formation of this typical characteristics can be explained by the flow of airflow under the four different working states of a ventilator.
1. The structure of the gas separation device
When running in the hump area, the wind pressure and air volume change instantly, and the amount of volume changes sharply, entering the non -stable working area, manifested as an abnormal noise and severe shock in the shaft ventilator, which causes the leaves to break and damage the fan in severe cases.The main reason is that when the axis fans are running in the hump area, the air flow of the fan in the airway enter the leaves before entering the leaves of the leaves to generate vortex and inverse flow. As the vortex and countercurrent areas expand, the axis flowers cannot work properly.Therefore, in order to ensure the stable work in the hump area, one of the effective methods is to transform the structure of the traditional fan, adding a device (called the gas separation device or a stabilizer) in front of the fan blade.Sepalation of chips and diversion ring.
2. The working principle of the gas separation device
Under the influence of centrifugal force and pressure differences, the vortex forming on the top of the blade enters a ring channel composed of diverting rings, cases and diverting slices. After the rectification of the streaming tablets, the vortex leaves the leaves to form a fixed circulation and enters the main flow of the fan.On the one hand, the air volume of the fan is increased, and on the other hand, isolated and drawing abnormality, the energy attenuation of the vortex will not cause the vortex and inverse flow of the airflow of the vortex to eliminate or weaken the vortex and the inverse flow area, so that the fan characteristic curveThe unstable zone has been improved to achieve the purpose of "no camelization" in the fan characteristic curve.
The above is the study of the work characteristics of the axis flow fan. I hope it can help you. If you have more demand or questions about the axis flow fan, please call us at any time!
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