RU35412U1 - Chimney head - Google Patents

Description

SMOKE PIPE HEAD

The utility model relates to chimneys for the removal of flue gases from boiler units burning solid fuel.

Known tip chimney 1. containing a bearing barrel, lining and a protective cap, recruited from the links.

A disadvantage of the known chimney tip is that during operation during the burning of solid fuel, ash is separated and deposited on the hood. Under the influence of precipitation, dense ash deposits are formed in the form of “caps, which create the danger of collapse. Cleaning and repair of the heads require periodic shutdown of equipment connected to the pipes and is associated with complex high-altitude work.

Also known is the tip of the chimney 2, comprising a bearing barrel, a lining and a protective cap made of separate links and overlapped with each other with the formation of air gaps.

In this chimney head, the technical result is achieved by blowing the hood plates off with air leaving the air gap through the air gaps between the plates.

The disadvantage of this chimney, adopted as a prototype, is the inefficiency of blowing settled ash from the plates due to the low output air velocity through the air gaps and the low angle of inclination of the plates (less than 60 °).

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a chimney containing a supporting barrel, a lining and a protective cap made of links, the link is made of at least two plates that form a dihedral angle between themselves and are installed to the vertical axis of the pipe at an angle of up to 30 °, with the outside the cap forms the shape of a cylinder or confuser, while the inside forms a diffuser or cylinder.

The technical result is ensured by making the hood links of at least two plates forming a dihedral angle in the upper part and installed at an angle to the vertical axis of the chimney at an angle of no more than 30 °. In this case, the outer side of the cap may be in the form of a cylinder or confuser, and the inner side may be in the form of a diffuser or cylinder. The shape of the sides of the hood is selected depending on the type of fuel burned and the operation mode of the connected boilers. As a result of this configuration of the cap, the angle of inclination of each side of the cap to the horizon is at least 60 °. At such angles, there is no deposition of ash from the flue gases on the hood and the formation of “caps” on it. As a result, it is not necessary to stop boiler units connected to the chimney and to periodically clean the head of deposits, which ensures uninterrupted operation of the connected boiler units.

The proposed utility model is illustrated by the drawing in FIG. 1 and in FIG. 2, section A - A of FIG. 1. The proposed chimney contains a bearing reinforced concrete barrel 1, a brick lining 2, and a protective cap 3, which overlaps the upper part of the bearing barrel and the lining with its support by means of a fastening 4. The cap is composed of links made of at least two plates and in cross section forming a dihedral angle a, and angles (3 and y with the vertical axis of the chimney. Angles (3 and y can be in the range from 0 to 30 °. In this case, the profile of the outer side of the hood can vary from cylinder to confuser, and internal - from diffuser to chili NDRA depending on the required aerodynamic parameters of the chimney and the abrasive characteristics of the ash of the burnt solid fuel.

Thus, the proposed utility model increases the durability of the chimney and the non-stop operation of the connected boiler units.

Authors: 0gЈs / Yu.V. Salov

V.V. Varnashov

 S.N. Baldin Ј / С4 & L.A. Mokshanov

E.V. Chernyshev NVGM Loroshin

USEFUL MODEL FORMULA

A chimney head containing a bearing barrel, a lining and a protective cap composed of links, characterized in that the links are made of at least two plates forming a dihedral angle and are mounted to the vertical axis of the pipe at an angle of up to 30 °, the outside of the cap forms the shape of a cylinder or confuser, and the inside of the diffuser or cylinder.

Sources of information taken into account during the examination:

1.Shishkov I.A., Lebedev V.G., Belyaev D.S. Chimneys of power plants. - M .: Energy, 1976, p. 89.

2. RF patent No. 1825936, Chimney. Bulletin “Discoveries and Inventions, No. 25, 1993.

Authors :( Yu.V. Salov

S.N. Baldin L.A. Mokshanov

S

;

V.V. Varnashov

E.V. Chernyshev

Mloroshin

Claims (1)

A chimney head containing a bearing barrel, a lining and a protective cap composed of links, characterized in that the links are made of at least two plates forming a dihedral angle and are mounted to the vertical axis of the pipe at an angle of up to 30 °, the outside of the cap forms the shape of a cylinder or confuser, and the inside of the diffuser or cylinder.