SU1286878A1 - Furnace - Google Patents

Abstract

The invention relates to the field of power engineering and can be used in thermal power plants. The purpose of the invention is to increase efficiency and reliability. Couples of burners (D) 4 and 5 are installed in a series of cems in order. The angle at which one of the G of each pair is located is equal to 90-arctg (1.3-2) S / Lj & where S is the step between pairs G; L is the distance between the walls (C) of the combustion chamber on which G 4, 5 is placed. The dynamic effect of the torches on C 2, 3 is moderate due to the intense exchange of the amount of movement between adjacent oppositely directed currents. The reliability of the screen tubes C 6 and 7 is enhanced by the gliding movement of the torch along them. 4 il. (gU Orct 2S / L) (L with N 00 Od 00 h 00

Description

FIG, I

The invention relates to a power system and can be used in thermal power plants.

The purpose of the invention is to increase the efficiency and reliability of the furnace.

FIG. 1 shows a firebox, longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - firebox, cross section, an example of execution in FIG. 4 - section BB on fi. 3

The firebox contains a vertical prismatic combustion chamber t of combustion, on opposite walls 2 and 3 of which burners 4 and 5 are installed in pairs in at least one floor. In each pair of opposing burners 4 and 5, a horizontal projection of the axis of the burner 4 is located at a right angle, and burner 5 - at an acute angle, which is equal to 90-arctg (1.3-2) ". where S is the spacing between the burners L is the distance between the walls

2 chambers 1. burned. Burners 4 and hz in pairs were installed in the hull in a pair of arms in the order of. The burners 5, located near the walls 6 and 7 of the combustion chamber 1, are rotated on the side of the axis of the chamber 1.

The furnace works as follows.

The fuel-air mixture enters the combustion chamber 1 through the burners 4 and 5 and burns in it in its central part four flue gases flowing counter-displaced by a horizontal step S. As a result, along with radiation, convective heat is produced from the central zone of the combustion chamber 1 towards the walls 2, 3,

6 and 7. At the same time, the dynamic effect of torches on walls 2 and 3 is moderate due to the intensive exchange of momentum

between adjacent indicated currents., having opposite directions.

The reliability of the screen tubes of the walls 6 and 7 is increased as a result of the sliding movement. torch

along these walls, so KaiT are horizontal, the projections of the axes of the extreme burners 4 are directed parallel to the specified walls, and opposite to

extreme burners 5 - deployed from "them.

Claims (1)

Invention Formula A furnace containing a vertical prismatic combustion chamber, on opposite walls of which burners are installed in pairs in at least one trench, with a horizontal projection of the axis of one of them located at a right angle to the wall, ke, and opposite one under acute characterized in that, in order to increase efficiency and reliability, the burners in pairs are installed in the train in alternating order, and the acute angle at which the horizontal projection is placed The axes of one-ia.burner of each pair is equal to С 90 - arctg (1.3 - 2) .S / L where S is the step between the burners; L is the distance between the walls. combustion chambers to :. placed burner. 90 , r FIG. 2 (90-txrct /. , H Jtf s four 23: four f9  Lb Fi.3 X 3 b . - 2 Phi2.