CN2246753Y - Vortex burner - Google Patents

Abstract

The utility model relates to a burner which is particularly suitable for being used on power plant boilers, furnaces and combustion chambers. The utility model is composed of a primary air pipe, a secondary air pipe and a cyclone. A central air pipe is arranged in the primary air pipe. Small strands of coal powder airflow or oil mist flow or fuel gas pass through the central air pipe and directly enter a high-temperature recirculation zone so as to be ignited firstly. The utility model has the advantages of stable combustion and small pressure fluctuation of fire. The adoption of the burner has very little influence on the original furnace structure.

Description

Vortex burner

The utility model relates to a kind of burner, is specially adapted to the power boiler burning occasion.

Existing vortex burner is made of airduct and secondary air channel, coal dust or mist of oil enter burner hearth through an airduct, secondary wind is axial or warp-wise blade through cyclone, or tangentially enter burner hearth, the spiral-flow type coal dust or the oil burner of Xing Chenging therefrom, because the effect of eddy flow impels primary and secondary air mixing too early and causes pulverized coal flow thermal capacity to increase, ignition heat also increases the difficulty of catching fire thereupon increasing.

At the difficulty that above-mentioned prior art exists, the purpose of this utility model provides the vortex burner that a kind of center sprays into shallow bid breeze airflow or mist of oil stream or combustion gas.

The utility model is implemented by following technical measures, vortex burner has two kinds of versions, one is made of airduct 5, secondary air channel 1 and a cyclone 2 for this burner, in airduct 5, establish a central air hose 4 along its center line, its size is determined according to designing and calculating, is established cyclone 3 at the port of export of central air hose 4.It two is made of airduct 5, secondary air channel 1 and a cyclone 2 for this burner, and along thinking that wherein line establishes a central air hose 4, its size determines that according to designing and calculating airduct 4 one ends are established and expanded flow cone 6 in airduct 5.

Neither can change reflux characteristic after the utility model has the advantages that introducing shallow bid breeze airflow or mist of oil stream or combustion gas, form simultaneously the combustion mechanism that the recirculating zone classification is caught fire again, make this shallow bid fuel-air stream directly enter high temperature recirculation zone catches fire in advance, improved the temperature of recirculating zone, therefore making and catching fire in advance, the flameholding pressure oscillation of catching fire is little.The utility model does not have much influences to whole flow field structure, and the later stage of fuel fully burns and also is achieved.

Description of drawings is as follows:

The accompanying drawing 1 central air hose port of export is established the structure principle chart of the vortex burner of cyclone.

The accompanying drawing 2 central air hose ports of export are established the structure principle chart of the vortex burner that expands flow cone.

It is as follows that the utility model is described in further detail in conjunction with the accompanying drawings:

One of the utility model version (Fig. 2) is, it is that 350 millimeters a airduct 5, secondary pipe 1 and cyclone 2 constitutes by internal diameter, establishes a central air hose 4 along its center line in an airduct 5, and its internal diameter is 100 millimeters, and airduct 4 one ends are established and expanded flow cone stream 6.

Claims (1)

1. a vortex burner is made of an airduct (5), secondary air channel (1) and cyclone (2) and (3), it is characterized by in an airduct (5) and establishes a central air hose (4) along its center line.

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