RU30418U1 - Chimney - Google Patents

Description

CHIMNEY

The utility model relates to a power system and can be used in the construction or reconstruction of chimneys containing a reinforced concrete shell and a gas outlet trunk protruding above it, the annulus between which is covered by a roof.

Known chimney 1, containing a reinforced concrete shell with a gas outlet shaft protruding from it, the annular space of which is cut off by a roof on its slice, the protruding part of the barrel is enclosed in a casing with the formation of a gap communicating the annular space with the atmosphere and resting on the roof. In a known pipe, the casing protects the protruding part of the barrel from destruction as a result of self-enveloping flue gases.

A disadvantage of the known chimney is that it does not eliminate the phenomenon of self-enveloping of the casing and reinforced concrete shell by aggressive flue gases.

The technical result of the utility model is achieved in that in a chimney containing a reinforced concrete shell and a gas outlet protruding from it, the annular space between which at its slice is covered by a roof, and the protruding part of the barrel is enclosed in a casing with the formation of a gap communicating the annular space with the atmosphere, and based on the roof, the casing is made in the form of a confuser composed of confuser rings with a transition in the upper part to the cylinder, the rings being overlapped with each other over the gap rum, and the overlap is performed outward or inward.

which displaces aggressive flue gases from the outer surface of the casing, creating a pressure region on the shadow side of the casing, which prevents the suction of flue gases into it with a blowing wind flow of air.

The essence of the utility model is illustrated in FIG. 1 and FIG. 2, unit 1 in FIG. 1. The chimney contains a reinforced concrete shell 1 and a gas outlet shaft 2 protruding above it, the annulus 3 between which at the top is covered by a roof 4, and the protruding part of the barrel is enclosed in a casing 5 with a gap

6. The casing 5 is supported by a reinforced concrete casing 1 and is made in the form of a confuser made of confuser rings 7. An annular gap is made between the exhaust pipe 2 and the roof 4. The confuser rings 7 are overlapped with clearances 9, while the overlap is made outward or inside.

The proposed chimney works as follows. The flue gases pass through the internal channel of the exhaust pipe 2 and are removed to the outside. Air from the annulus 3 passes through the annular gap

7, the gaps 6 and 9 between the confuser rings 8 and enters the leeward region of the bearing trunk, which increases the air pressure in this region and reduces the suction of flue gases from the root region of the smoke plume. The lateral drift wind flow from the front side of the casing closes the annular gap between the confuser rings, thereby increasing the rate of air exit from the annulus to the outside from the shadow side of the casing, which contributes to an increase in pressure and a decrease in the outflow of exhaust gases from the torch root. At the same time, the enveloping of the reinforced concrete shell is also reduced.

Thus, the proposed utility model allows to reduce the self-wrapping of the chimney head and increase the reliability of its operation.

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USEFUL MODEL FORMULA

A chimney containing a reinforced concrete shell with a gas outlet trunk protruding from it, the annular space of which is cut off by a roof on its slice, the protruding part of the barrel is enclosed in a casing with the formation of a gap communicating the annular space with the atmosphere, and resting on the roof, characterized in that the casing is made in in the form of a confuser composed of confuser rings with a transition in the upper part to the cylinder, the rings being placed overlapping with each other with a gap, and the overlap is made outward or inward.

Sources of information taken into account during the examination:

1. Utility Model Certificate No. 11304 “Multi-barrel Chimney, - Bull. "Discoveries, inventions No. 9, 1999

Head of PIO Authors:

Yablokov V.P. Salov Yu.V. Tarana O.E.

Varnashov V.V. Baldin S.N. Mokshanov L.A.

Claims (1)

A chimney containing a reinforced concrete shell with a gas outlet trunk protruding from it, the annular space of which is cut off by a roof on its slice, the protruding part of the barrel is enclosed in a casing with the formation of a gap communicating the annular space with the atmosphere, and resting on the roof, characterized in that the casing is made in in the form of a confuser composed of confuser rings with a transition in the upper part to the cylinder, the rings being placed overlapping with each other with a gap, and the overlap is made outward or inward.