SU111463A1 - Pr wire boiler with cyclone firebox - Google Patents

Description

The invention aims to improve furnaces with boilers equipped with cyclone furnaces. Known boilers of the similar type are known for their large dimensions as well as for increased heat losses to the environment.

In the described boiler, this disadvantage is eliminated by the fact that the boiler furnace is placed in the annular space between two concentrically arranged cylinders, the walls of which are formed by vertical tubes of the flue screens, and the boiler superheater is located inside the smaller cylinder in the second chimney of the boiler. The compact arrangement of heating surfaces reduces the dimensions of the boiler, and the location of the furnace inside the boiler reduces heat losses to the environment.

FIG. 1 shows the device described boiler; in fig. 2 shows a BB section in FIG. one; in fig. 3 shows a section along GG in FIG. one.

The boiler consists of seven annular manifolds, two rows of boilers, which at the same time are the screens of the boiler, eight rows of superheater tubes, a tubular superheater, two veaters, two smoke exhausters and a chimney. in the lower ring collector 2B of two diagral points located. In this same collector, the lower ends of the tubes of the outer row 3 and inner 4 are welded. The tubes of the outer row are welded to the annular manifold, and the tubes of the inner row are joined to the same manifold 6. The manifolds 5 and 6 are connected between bypass pipes 7. Feed water from the lower collector enters the pipes of the outer and inner rows, rises up, heats up, evaporates and enters the collector 6 as a steam emulsion.

The overflow pipes 7 are lined with chamotte brick, and the pipes of the inner row and are lined with small thicknesses only in the upper part. The presence of such cladding in this part of the boiler provides a quick 111463

Ignition grew ugo. py.shyr three kindling of the boiler and its steady burning during its operation. The pipes inside the pipe are installed one to the other without a gap, and the external pipe is installed with a gap of up to 5 mm.

The pipes of the external and internal rows, being filled with water at the bottom, and at the top with a conductive emulsion, represent, as it were, two thin layers of the working substance between which the flow space is enclosed.

The outer row of Zash pipes searches for the furnace from exhaust heat into the environment, while the inner one does not allow gases to enter the superheater before they reach the slag boiler funnel.

From the collector 6 through pipes 8, a wet nasysh, epny steam, passing through two screw steam nozzles 9 enters the collector 10. Separating the moisture in them is thrown to the walls, flows into the lower parts of the separators and then through the pipes // and nozzles 12 enters the collector 2. The separated moisture in this case is fed back to the boiler under the action of the water difference in the pipes // and the screen tubes. The sludge from the separated moisture falls into the sieve 13 and can be removed from them when blowing through the gates.

The steam from the collector 10 passes through the superheater pipes / 5, enters the J6 manifold and then goes through pipes 17 to the manifold 18. From the collector 18, steam goes to the superheater pipes 19, then to the collector 20 and then through pipes 21 to the turbine.

Parseparator attached to the collector 6 in two diametrically located points. These points are offset from the points of feedwater supply to the coil collector 2 by 90 in order to more evenly distribute the moving steam and water pipes.

For the same purpose, steam extraction pipes to the turbine and connected to the collector 20 to two diametrically located points located at an angle of 90 to T04Kai4 connect steam channels to the collectors 6. The crushed coal melted into melpitsa or by some other transport is supplied in four cyclops, evenly spaced around the boiler. In cyclones, the dust is not only separated from the air, but also divided into fractions. For this, the dust before the cyclops is collected in a narrow stream with the help of Ms.: postures, which are suitable in the pipes of 22 cyclones, and in this form taigeitsiya.chysyu served in cyclones. Large dust particles then fall out between the inner 23 and 24 outer cylinders and then the screw 25 through the pipes 26 are directed into the furnace closer to the adjacent screen row. Once in the air stream, these particles twist and are thrown to the outer row of pipes, which greatly lengthens their path and contributes to their better burnout. Small particles of dust are assembled in the inner cylinder 23 of the cyclone and the speck 27 through the pipes 28 are fed into the furnace, closely to the outer row of pipes, where they burn quickly. No need for nyih nyih.

The height of the furnace space should be such that all coal particles have time to burn before the gas stream reaches the slag funnel 29; the gases, reaching the funnel, turn the angle 180 to the pas and go up through the superheater, and the ash falls into Placosa on the funnel. To prevent frustration of the tubes, the inner row in their lower portions, cuffs 30, also made of tubes, but of larger diameter, are put on these pieces.

The thin gases, having passed through the superheater, heat the coarse air heater 31 and even with the smoke exhausters 32 are removed into the smoke; A new pipe 33. The air required for combustion is supplied by fans 34 to a tubular air heater 31 and further along four ducts: 35 is power supplied to the furnace space, into the flow of which augers 27 and 25 supply separated coal dust.

The rest of the boiler is equipped with a conventional frame, laying 36 and insulation.

Claims (2)

1. A rolling boiler with a cyclone furnace, characterized in that, in order to reduce the dimensions of the boiler and heat losses to the environment, the combustion device is placed in the annular space between two concentric cylinders formed by the screen tubular heating surfaces and inside the smaller of these cylinders Connected steam superheater coils are located. 2. In the boiler furnace according to claim 1, the separation of coal dust before feeding it into the burners into fractions using separators with internal cylindrical chambers that feed dust into the furnace so that large particles of coal come closer to the center of the annular cavity, and small ones peripheral part. № 111463 Subject invention Section 22 bb