Energy-saving fan-series model for circulating fluidized bed boiler

Abstract

The invention discloses an energy-saving fan model for a circulating fluidized bed boiler. The energy-saving fan model comprises a housing case, an impeller, an air inlet and a transmission group, wherein the impeller consists of 16 vanes, an impeller cover, an impeller disk and a hub; 16 backward plate-like vanes are uniformly distributed along the circumferential direction, are welded between the arc-shaped impeller cover and the flat-plate impeller disk, and are assembled with the hub; the molded line of the air inlet has a conical arc-shaped structure which converges axially; the outlet diameter of each vane is 800 millimeters, the inlet diameter is 389 millimeters, the width is 151.9 millimeters, the outlet width is 77.5 millimeters, and the blade outlet angle is 68 degrees; and the inlet diameter of the air inlet is 495 millimeters, and the width of the air inlet is 178 millimeters. The energy-saving fan model has wide application; the impeller consists of backward plate-like vanes, so that overload of a motor is avoided; and the energy-saving fan model has the advantages of high efficiency, saving in energy, wide efficient region, low noise, small pressure difference between the outlet and the inlet, reduction in the device number, small vane inlet wear and capability of prolonging the service life of the impeller.

Description

technical field [0001] The invention relates to a fan, in particular to a series model of a 7-28 type circulating fluidized boiler energy-saving fan. Background technique [0002] At present, most of the fans sold in the domestic market are products developed in the 1960s and 1970s, such as 4-73, 4-72, 9-19, 9-26, 5-48, 6-48, T4-72 and other series products. It is still widely used in various fields. In recent years, some enterprises have cooperated with colleges or universities or introduced and independently developed some new products, which are still far from meeting the growing market needs, and there is still great potential to be tapped for the performance level of fans in certain fields. In the face of severe competition in the wind turbine market, only by continuously improving the technical level of wind turbines can we be competitive. The aerodynamic performance of the fan is its most important component. No matter how good the structure of a fan is, no matter ...

AI Technical Summary

Problems solved by technology

Sometimes, although the flow pressure of the fan can be selected, but because it is not in the high-efficiency area, or the maximum efficiency is not high, the power of the selected motor is very large, and it cannot compete with other bidding units, thus losing the opportunity to bid

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