SU1434215A1 - Boiler heating surface - Google Patents

Abstract

Invention m. used in waste-heat boilers in the metallurgical and chemical industries. The purpose of the invention is to increase the efficiency of the boiler by simplifying the manufacturing technology. The heating surface of the boiler contains 1.2 heat-exchange tubes 3 connected to the inlet and outlet headers. Each pipe is laid to form closed and open loops. The loops are located transversely relative to the vertical axis and parallel to other loops with the formation of framing and double-lighted screens 4, 5 of the radiation and convection chambers 6, 7. Closed loops form the screens 4 of the chamber 7 and are made in each pipe 3 double-turn. 3 or;

Description

.

Bv

(L

 with

4 S

cl

%

t

FI.3

The invention relates to industrial power engineering and can be used, for example, in waste heat boilers, as well as in the metallurgical industrial area.

The aim of the invention is to improve cost-effectiveness by simplifying the manufacturing technology.

 FIG. 1 shows the surface j of the arc of the boiler, a general view, in FIG. 2 - id A in FIG. 1, in FIG. 3 - section) -B in FIG. one.

The heating surface of the boiler contains connected to the inlet and outlet - to the collectors 1 and 2, the heat exchange coarse 3, each of which is removed; the formation of closed and open loops arranged transversely | with respect to the vertical axis and parallel with respect to the loops of the other 3 with the formation of framing and | 7 and are made in each pipe 3 at least two-welded: owls. The pipes 3 of the surrounding screens ft of the radiation chamber 6 and the two-light screens 5 are installed with double inaroM in the transverse plane. The pipes 3 of the framing screen 4 of the convection chamber 7 are installed in single pitch. The collectors 1 and 2 are installed outside the heat exchange zone. In addition to this, the hearth and ceiling part of the cat | La is framed by a multi-sea coil 8 with fins 9 connected to collectors 1 and 2. The pipes 3 framed by the screens 4 of the radiation chamber 6 also have fins 9. Input 10

and the gas outlet 11 is the annulus of screen 4.

The boiler with a heated surface works as follows.

The gases through the inlet 10 enter the chamber 6, release some heat to the pipes 3, then the gases enter the convection chamber 7 and out through the outlet 11 are removed. Due to the arrangement of the pipes 3 of the screen 4 with a single step, the flow of gases is inhibited, which leads to an increase in the static pressure in the chamber 6, the formation of a shock wave and its propagation through the volume of the chamber 6, which intensifies the heat transfer. Water flows from the collector 1 to the pipes 3, as well as to the coils 8 of the bottom and ceiling parts of the boiler, receives heat from the exhaust gases, is heated and discharged through the collector 2 to the consumer (not shown).

Claims (1)

Invention Formula The heating surface of the boiler, containing heat exchanger tubes connected to the supply and discharge cuff collectors, each of which is laid to form closed and open loops transversely relative to the vertical axis and parallel to the loops of the other tubes to form framing and double light shields of radiation and convective chambers so that, in order to increase efficiency by simplifying the manufacturing technology, closed loops form the screens of the convection chamber and are made in Doi tube at least a double-turn. -eleven J.  eight fts.7 8ud