SU130907A1 - Fixed Tubular Vertical Steam Boiler - Google Patents

Description

Fixed tubular vertical steam boilers of rapid steam generation of the direct-flow type are known, which are designed to produce high pressure steam and temperatures in lightweight steam-driven steam power plants. These boilers use pressure burners that are sealed from all sides to burn liquid fuel under pressure. In the furnace casing, compressed air is supplied to the nozzles installed in the upper part of the boiler, to which the liquid fuel heated in the coil placed in the furnace together with the coils of superheaters of the main and intermediate steam is also supplied under pressure, so that the coils are all coils lie in the offense of a cylindrical surface. However, such K01LY complex in design.

In the described boiler, in order to simplify the design and increase its efficiency (}), the main evaporative heating surface of the boiler is made in the form of a continuous cylindrical flue screen composed of closely spaced circumferential | to a friend vertical tubular elements of the type "pipe in pipe. Feed water is introduced into the jackets of the elements, and flue gases are passed into the internal channels, entering from the bottom and exit to the top to direct the flue duct into the lower annular section, bounded on one side by the screen, and on the other - the boiler casing. A pipe located along the axis of the boiler in the lower part of the flue gas chimney can be used to supply feed water to the boiler. From there, the water enters through the radially arranged tubes into the furnace screen, where under the action of hot gases it turns into steam. This steam is directed through the upper radial tubes to the superheater.

No. 130907-2 In the drawing is a diagram of the described boiler.

The stationary tubular vertical steam boiler consists of an outer casing / thin 2, thin screen 3, coil superheaters 4, 5 ib of the main steam, intermediate bunk and fuel arranged by the Water cylindrical surface, and nozzles 7.

The water after preheating in the heat exchanger enters the central feed pipe. The tube 8 to the distributor 9, and from it through the radial tubes 10 vi 11 рубашки shirts 12 and 13 of the tubular elements 14 and / 5 of the furnace screen 3.

The resulting vapor through pipes 16 and 17 goes to the collector 18, and from it to the superheater 4. After acquiring the necessary parameters, the steam is supplied to the pipe. The intermediate steam from the machine passes through the pipe 20 to the superheater 5, and from the latter returns to the pipe 2 /. The compressed air, after preheating, passes inside the casing 1, is heated and supplied through the annular channel 22 to the nozzles 7, where it is mixed with the fuel preheated in the superheater 6, into which it is fed through the nozzle 23. The combustion gases formed as a result of the combustion process on channel 24 of screen 3, heating the feed water, and then, moving along the discharge duct 25, wash the superheaters 4, 5 and b. In the chimney, 26 flue gases give up the remaining heat to the water passing through the pipe 8.

The described boiler allows to obtain high pressure steam and significant overheating. If necessary, it can be equipped with a gas turbine, which uses heat from the waste of their flue gases, a compressor, a feed water pump, regulating and instrumentation equipment.

Inventory subject

. 1. Stationary tubular vertical steam boiler of rapid steam generation of the direct-flow type, designed to produce high pressure steam and temperatures in lightweight steam-powered transport installations, with a pressure-tight furnace for burning liquid fuel under pressure and heated in a leather box of compressed air furnace supplied to nozzles installed in the upper part of the boiler, to which liquid fuel heated in a coil placed in a furnace together with coils of a superheater is supplied under pressure the main steam and intermediate steam from the machine in such a way that the turns of all coils lie in the circumferential cylindrical surface, characterized in that the main evaporation heating surface of the boiler is made in the form of a solid cylindrical furnace, made up of vertical tubular spaced circumferentially adjacent to each other elements of the type "pipe in pipe" into the shirts of which feed water is introduced, and flue gases enter the internal channels, entering from the bottom and exit to the top to be directed into the lowering ring flue-section bounded on one side screen, and on the other - the boiler casing. 2. The boiler according to claim 1, characterized in that a pipe is provided for supplying feed water to the boiler, located along the axis of the boiler in its lower part in the flue exhaust gases, from which radially arranged pipes supply water to the R furnace, where The secondary gases are converted into vapor, directed along the upper radial pipes through a centrally located collector in the superheater.

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