CN2090011U

CN2090011U - Burning device of vertical boiler

Info

Publication number: CN2090011U
Application number: CN 91205311
Authority: CN
Inventors: 张润春
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-02
Filing date: 1991-04-02
Publication date: 1991-12-04

Abstract

The utility model provides a burning device of a vertical boiler, which is suitable for a vertical boiler in particular, belonging to a burning device of a grate firing type boiler. A column casing member which penetrates a hearth is arranged at the throat pipe of a combustion chamber arch, and a reciprocating type impulsing fire grate is assembled there, too. The burning device provides the combustion chamber with good combustion conditionn for the vertical boiler. Thus, burning out degree is improved, dust content in flue gas is reduced and the performance of the vertical boiler is effectively improved by means of reducing coal consumption, eliminating the environmental pollution of flue gas, etc.

Description

Burning device of vertical boiler

The utility model belongs to the solid-fuelled boiler combustion equipment of employing, is a kind of burner that is specially adapted to vertical boiler.

At present, the burner of common vertical boiler, be subjected to integrally-built restriction, the vault of its combustion chamber mostly is arcuation list arch, because the combustion space is less, unmatched, back arch structure and supporting with it fire grate all adopt fixed fire grate, make high-temperature flue gas in the combustion chamber not possess the condition of mutual agitation, influenced the abundant burning of burning, and the flue gas that causes containing more coal dust enters atmosphere and pollutes through trunnion, chimney.

The purpose of this utility model is to provide a kind of trunnion position at the combustion chamber vault to be provided with and stretches into indoor column casing member, and by the vertical boiler combustion chamber of adorning conventional moving grate, by improving the grate furnace burning condition, improve the after-flame degree of fuel and the dustiness of minimizing flue gas, to overcome the existing existing deficiency of vertical boiler.

Overall structure of the present utility model is:

Trunnion position (1) at combustion chamber vault (4) is provided with column casing (2), and an end (3) of column casing stretches in the combustion chamber, convection bank district (9) UNICOM of the other end and boiler, and air gap (10) is left in the junction of column casing and vault; Be installed in the movable fire grate of the fire grate (6) of bottom, combustion chamber for conventional layer combustion furnace.

The specific structural features of this burner is:

The cross section of column casing is frustum, its upper and lower mouthful (11), (12) diameter are than being 1:0.5-0.7, the height that stretches into the projecting inward part in combustion chamber (13) is 100-200mm, and the distance of column casing center and vault misalignment is 80-120mm, and the column casing outer wall is distributed with axial notch; Fire grate is conventional hand active fire grate or reciprocating type promotion fire grate.

On vault, also offer exhanst gas outlet (8).Exhanst gas outlet and column casing homonymy, and depart from vault center 200-500mm, fire grate is conventional horizontal reciprocal grate.The cross section of exhanst gas outlet is the rectangle of 100-300mm * 40-70mm;

Accompanying drawing of the present utility model has:

Fig. 1 is the overall structure sketch of combustion chamber.

Fig. 2 is the vertical view of combustion chamber vault.

Fig. 3 is the partial sectional view of vault.

Accompanying drawing 3 has provided embodiment of the present utility model, in conjunction with the accompanying drawings it is further specified as follows:

Because column casing is charged in the combustion chamber, to compare with common arcuation list arch, its jag is divided into forward and backward two parts with vault, can be similar to the forward and backward arch structure of horizontal boiler large-scale combustion chamber.In limited combustion zone, make the flue gas stream and the red-hot flame flow that contain combustible, match at outstanding post stalk place, form new turn air-flow, mix with the stirring that promotes them, make the fully burning in mixing of flammable furnace gas.In addition because movable fire grate only is suitable for and possesses the combusting room device of face arch, so the fuel chambers of general small scale vertical boiler must adopt vault of the present utility model could dispose reciprocating type promotion fire grate.

Most preferred embodiment of the present utility model is when column casing is set, leaves the exhanst gas outlet that the cross section is a rectangle again, its concrete size as described above, the back cut diameter of column casing is 200mm, lower port diameter is 130mm, is advisable with the gas-tight property that does not influence the combustion chamber.Purpose is to cooperate the air gap of column casing outer wall, makes high-temperature flue gas enter convection bank when zone, and the mechanical whirling motion and the backflow that produce certain intensity again make dust in the flue gas by rotational flow separation, to reduce the dustiness in the flue gas.(5) are fire doors among Fig. 1.

When transformed the combustion chamber of vertical water pipe or multitubular boiler, column casing adopted boiler plate to make with attaching of flue vault or integral body and is spliced, and reciprocating type moving grate device is located at the U of flue type leftover bits and pieces circle (7).Vertical water, when fire tube mixing boiler is transformed, because of its combustion chamber is brick burner hearth, the vault with column casing also can adopt the refractory concrete cast to make.

The substantive distinguishing features that the utility model has and the technological progress that obtains are:

1, by vault the column casing member is set and assembles reciprocating type promotion fire grate, for the limited combustion zone of vertical boiler, provide preferably burning condition. Not only improved the after-flame degree of coal, the temperature of burner hearth, and reduced the dustiness of flue gas.

2, this burner is rational in infrastructure, is easy to existing various vertical boilers are transformed, and reducing coal consumption, removes smoke and the aspects such as pollution of environment has been improved effectively the performance of vertical boiler.

Claims

1, a kind of burner of vertical boiler, by combustion chamber and the fire grate that is arranged on the bottom, combustion chamber is that the master constitutes, it is characterized in that column casing (2) being set at the trunnion position (1) of combustion chamber vault (4), one end (3) of column casing stretches in the combustion chamber, convection bank district (9) UNICOM of the other end and boiler, air gap (10) is left in the junction of column casing and vault, is installed in the movable fire grate of the fire grate (6) of bottom, combustion chamber for conventional layer combustion furnace.

2, burner according to claim 1, the cross section that it is characterized in that column casing is frustum, its upper and lower mouthful (11), (12) diameter are than being 1:0.5-0.7, the height that stretches into the projecting inward part in combustion chamber (13) is 100-200mm, the distance of column casing center and vault misalignment is 80-120mm, and the column casing outer wall is distributed with axial notch; Fire grate is conventional hand active fire grate or reciprocating type promotion fire grate.

3, burner according to claim 1 and 2 is characterized in that also offering exhanst gas outlet (8) on vault, exhanst gas outlet departs from vault center 200-500mm, and with the column casing homonymy, its cross section is the rectangle of 100-300mm * 40-70mm; Fire grate is conventional horizontal reciprocal grate.