SU107882A1 - Cast Iron Sectional Boiler - Google Patents

Description

Cast iron heating sectional boilers with a heated heating surface with L-shaped sections, the fins of which form vertical channels with the same section in height, are known.

In the described construction of the boiler, in order to increase heat exchange and, by increasing the gas velocity, the vertical fins of each section form a series of channels that taper downwards. At the same time, in order to develop the radiating surface of the firebox, water-cooled panels made of a ngweiler were installed in its walls. The panels through the bottom nipple heads of the sections are attached to the circulation circuit of the boiler.

FIG. 1 shows a vertical section of the boiler; in fig. 2 are sections of the .4 / 1 and BB section of FIG. one.

The boiler consists of two rows of medium and four rows of frontal sections of L-shaped form, connected on the nipples and located symmetrically with the axis of the boiler.

The number of sections determines one or another heating surface.

boiler (from 24.56 .i / l about 48.44 l / -). The upper horizontal 7 n outer vertical A ribs of the sections serve as the basis for the upper and lateral lining of the boiler. In the upper part of the sections, the outer ribs have windows 3 for cleaning the heating surface of the boiler from ash. These openings are covered with cast iron krppkamn, and the latter are covered with sheet asbestos and laid with brick.

In the presence of an external thin grate, the grate is assembled from standard plate grates 4, and all types of solid fuels can be burned with a blow bar. The air supply for blowing the valve, the grate grid from the front of the boiler is passed through the side openings of the ash door.

To increase the radiation radius of heating and the strength of the topcp walls, a water-cooled panel is provided with ribs made of a channel bar. This panel is inserted through the lower heads of 6 sections into the circulation loop of the boiler. In the presence of an internal firebox, the grate is made of a special (trough-shaped) form of grid-irons with a live section of up to 25Vo, mounted on the tides of 6 lower section heads. On this grid, with a developed combustion mirror and with a significant living section, it is possible to burn fuel without air supply for blowing.

In order to increase the pagrean surface with the same dimensions of the boiler, the sections are provided with ribs, 9, which, connected in pairs to each other, form ducts that taper downwards. edges of sections, and the drive of them; care t hog. The furnace and horizontal flue of the boiler are made of brick.

Piapy / the boiler surface is coated with an insulating mastic consisting of asbestos and white clay.

The boiler is powered through the lower section heads. The presence of vertical channels tapering downward, formed by the edges of sections provided on the sides of them, increases heat transfer by increasing the velocity of gases in the channels.

Water-cooled panels provided in the walls of the external furnace and connected through the lower nipple heads of the sections to the circulation circuit of the boiler ensure the development of the radiation surface.

Thermal stress on the surface of the boiler heat 13,000 cal. The weight of the boiler per 1 m of the heating surface is 77 kg.

Subject invention

Claims (2)

1. A cast-iron sectional boiler with a finned heating surface, whose L-shaped sections form a vault, and on the sides of the section vertical ribbing channels are provided to remove gases, so as to increase heat exchange by increasing the speed gas movements; the vertical edges of each section in pairs form a series of channels, tapering downwards. 2. The form of the boiler according to claim 1, characterized in that, in order to maximize the radiation surface of the furnace, water-cooled panels are installed in the walls of the lower (external) furnace, made of a channel bar and connected to the circulation circuit through the lower nipple heads the boiler.