SU47300A1 - Water Tube Steam Boiler - Google Patents

Description

The invention relates to water tube boilers of a screen type with a hipped arrangement of internal rows of tubes and with chimneys on the sides, directed from the inside to the outside of the boiler and passing down to horizontal smoke outlets running along the grate box-type grid.

In the proposed boiler, screen and reverse circulation tubes placed in the steam collector, in their staggered order, are at their lower ends connected to collectors located one above the other on each side of the boiler in its lower part on the sides of the grate.

In FIG. 1 shows a cross section of a water-tube steam boiler according to AB of FIG. 2; FIG. 2 is a longitudinal section through CD of FIG. one; FIG. 3 is a horizontal section through EF of FIG. one.

The entire heating surface of the boiler consists of circularly arranged boiling circulation tubes — screen 3, 4 to the reverse 5, 6, which are brewed or rolled into the steam collector 7 by the upper radially directed ends, and by the lower ends enter four collectors /, 2, between manifolds for the chimney 9 leading along hopper - MV ashpit 8 through the foundation channel to the installation chimney flue. The collectors 7, 2 are located in the lower part of the boiler, two on each side one above the other on the sides of the grate.

The internal furnace tubes 3, 4, the outlet of the four collectors, are so tightly spaced from one another that they form a solid screen with pipes bent at the top through one, forming chimneys / O for gases at this point. The correct direction of the gases through the specified chimneys on both sides of the boiler ensures a correspondingly uniform heating of the tubes located on both sides of the boiler. The collectors /, 2 at the same time serve as drainage pipes, easily cleaned through their plugs. In traffic jams placed and bleed cranes. Plug-in grates with ash boxes allow for replacing the grates to adapt the furnace for different types of fuel. The casing // with insulation is attached to the semicircle welded to the steam collector and along the squares.

Between the boiling pipes. On both sides of the boiler for free heating over the collector ---- overheating

The subject matter of the invention.

Water-tube steam boiler of screen type with a hipped-roof arrangement of internal rows of tubes and with chimneys on the sides directed from the inside to the outside of the boiler and passing down to horizontal chimneys,

extending along the grate box lattice, differing in using, on each side of the boiler, two collectors 7 and 2 arranged one above the other on the sides of the grate 7 and 2, with screen 3, 4 return 5, circulating tubes arranged in a staggered pattern.