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How to adjust the air volume of the high-pressure centrifugal fan?

2020-09-22

Centrifugal fan is a kind of fan. Centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust exhaust and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. How is the air volume of the centrifugal fan adjusted?


Install a frequency converter to achieve this intention. In addition, you can also use a conditioning air door, which can also have the same effect. As for which one should be selected, it depends on the actual situation and application requirements, and it is up to them to decide.


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There are corresponding instructions for the limit speed of the centrifugal fan. Generally speaking, there will be a report after the selection, which contains the content of the theoretical limit speed. Moreover, if the fan air volume, wind pressure and other parameters are different, then the actual application of the high-pressure centrifugal blower is also different. However, if the parts are all standard parts, there is generally not much change.


When we purchase high-pressure centrifugal fans, we must select model parameters, power, pressure, air volume, speed, etc. according to the requirements of the working conditions. The turbine fan can also be selected from samples provided by the fan manufacturer based on parameters such as wind pressure, air volume, operating temperature, rotation direction, connection mode, motor power, and speed.


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When the high-pressure centrifugal fan is connected with the root joint surface and the inlet and outlet air pipes, they should be adjusted to be natural and gentle. Do not connect forcibly. Do not allow the weight of the air pipe to be on the casing to avoid casing deformation affecting operation;


When using series connection, there should be a certain pipeline combination between the first-stage high-pressure centrifugal fan and the second-stage high-pressure hot fan. When it is unavoidable, high-pressure centrifugal fans of the same model and performance should be selected for joint operation.


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