SU1740858A1 - Combined boiler - Google Patents

Abstract

Use: energy, heat generation. SUMMARY OF THE INVENTION: The boiler contains in the housing 1 a furnace 2 and ducts 3 and 4 with vertical tubular heat exchange surfaces. The surface of the duct 4 is made in the form of thermosiphones 5, condensation sections 6 of which are located concentrically inside pipes 7 of the duct 3. Water is heated in a coaxial gap between the walls of pipes 7 and condensation sections 6 with heat of utilized gases and heat of combustion products depending on the boiler output required by the consumer. 1 hp ff, 2 sludge

Description

This invention relates to power engineering and can be used in ship installations.

Combined boilers are known that contain a vertical casing, inside of which there is a furnace and gas ducts with tubular heat exchanging surfaces, with one of the gas ducts connected to the furnace and the other to a source of recyclable gas.

Also known is a combined boiler containing a vertical body, in the cavity of which, one after another, a furnace and two ducts with vertically arranged tubular heat exchange surfaces are placed, the first gas duct is connected to the furnace, and the second is to a source of recyclable gas.

The disadvantages of the known combined boiler are relatively large mass and dimensions.

The purpose of the invention is to reduce the mass-size characteristics

This is achieved by the fact that in a combined boiler containing a vertical case, in the cavity of which, one after another, a furnace and two gas ducts with vertically arranged tubular heat exchange surfaces are placed, the first gas duct is connected to the furnace, and the second is to a source of recyclable gas, a tubular heat exchanger the surface of the gas duct connected to the source of the utilized gas is made in the form of thermosyphons, the condensation sites of which are located in the first gas duct. In addition, the condensation sites of thermosyphons are located concentrically inside the vertical pipes of the first gas duct.

Making the heating surface connected to the source of the utilized gas from thermosyphons makes it possible to create a device that can be placed in the machine-boiler compartments of small vessels.

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FIG. 1 shows a combined boiler, general view; in fig. 2 is a section A-A in FIG. 1.

The combined boiler contains a vertical body 1, in the cavity of which, one after another, a furnace 2 and two ducts 3 and 4 with vertically arranged tubular heat-exchanging surfaces are placed. The duct 3 is connected to the furnace 2, and the duct 4 - to the source of recyclable gas (not shown).

The tube heat exchange surface of the flue 4 is made in the form of thermosyphons 5, condensation sections 6 of which are located in the flue 3. Condensation sections 6 of thermosyphons 5 are located concentrically inside the vertical pipes 7 of the flue 3. In addition, the boiler contains a nozzle 8 for discharging combustion products, the collector 9 , water waste pipe 10 and cover 11.

Combined boiler works as follows.

The utilized gases wash the evaporation areas of the thermosyphons 5 in the duct 4, transferring the heat to the intermediate heat carrier boiling inside the thermosyphons - distilled water. The resulting vapor is condensed in the condensation sections of 6 thermosyphons 5, giving away the heat of the phase transition to the heated water circulating in the coaxial gaps between the walls of the pipes 7 and the condensation sections b of the thermosyphons 5.

In cases where the boiler's heat output is insufficient to meet the ship's heat demand, for example, in partial operation modes

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internal combustion engines, which are the source of the gas to be utilized, turn on the combustion chamber 2. The combustion products produced in the combustion chamber 2

5 enters the gas duct 3, washing the vertical pipes 7 outside. The combustion products are cooled in this case, transferring heat to the heated water circulating in the gaps between the walls of the pipes 7 and condensation

10 plots 6 thermosyphons 5. The cooled products of combustion through the nozzle 8 are withdrawn from the boiler. Water is supplied to the boiler through the collector 9, washes the furnace 2, cools it, passes through coaxial gaps between the walls of the pipes 7 and the condensation sections 6 of thermo-syphons 5 and further through the overflow pipe 10 and the cover 11, cooling the wall of the latter, is discharged from the boiler.

Claims (2)

1. A combined boiler containing a vertical body, in the cavity of which, one after another, a furnace and two gas ducts with vertically arranged tubular heat exchange surfaces are placed, the first gas duct connected to the furnace, and the second to the source of recyclable gas, characterized by that, in order to reduce the mass-dimensional characteristics, the tubular heat exchange surface of the gas flue connected to the source of the utilized gas is made in the form of thermosyphons, whose condensation regions are located in the first flue. 2. Boiler POP.1.0TL based on the fact that the condensation sections of thermosyphons are located concentrically inside the vertical pipes of the first gas duct. Ssft ijj .I t-L Ј thirty 35 Tdlli /} Zl Aa  ABOUT FIG. 2