SU966403A1 - Steam boiler - Google Patents

Description

The invention relates to energy and can be used in thermal power plants.

A steam boiler is known that has a series of tubular heat exchange bags arranged in series along the gases in the rotary chamber of the gas duct, the number in rows increases along the gases f and the bypass bundles of pipes arranged in the gas duct, which are integral with the corresponding tubes of heat exchange packets in adjacent rows and suspended from pipes of the ceiling screen of the flue 1..

The disadvantage of this steam boiler is its reduced maintainability due to the location of the fixing unit for the overflow pipe bundles to the ceiling screen pipes in the flue duct.

The closest technical solution to the proposed invention is a steam boiler containing a series of tubular heat exchange packets with a specified number of packs in each row installed in the rotary chamber of the gas flue and the overflow beams located outside the gas flue

pipes with vertical sections, made together with the corresponding pipes of heat exchange packages in adjacent rows and suspended from the frame with the help of combs 2 J. attached to them,

The disadvantage of such a steam boiler is reduced operational reliability due to increased stresses in the pipes of the overflow beams, since the latter are suspended to the frame by their horizontal sections, which creates a bend at the place of creation, as well as due to the intensive slagging of the heat exchange bags caused by that the last in adjacent rows are set with the same step.

20

The purpose of the invention is to increase the reliability of the steam boiler by reducing the stresses in the pipes of the overflow beams and reducing the slagging of the heat exchange bags.

25

This goal is achieved by the fact that the combs are fastened with the pipes of the overflow beams in the zone of their vertical sections, and the number of packages in the array increases along

Claims (2)

30 to the course of gases. “In FIG. 1 schematically shows a steam boiler, general view; in fig. 2 - suspension assembly of overflow pipe bundles to the frame; in fig. 3 - time cut AA in FIG. 2; in fig. 4 shows a section BB in FIG. 2. The steam boiler contains a series of tubular heat exchanging packages 2 installed in series along the gas in the rotating chamber 1 of the flue with a given number of packages in each row and located by the outside of the flue bypass pipes 3, Pipes 3 have vertical sections, are made at the same time with the corresponding turbines of heat exchange packages 2 in adjacent rows and are suspended to the frame 4 by means of combs 5 fastened to them. Combs 5 are fastened with pipes 3 bypass beams in the zone of their vertical sections. The number of packets 2 in rows increases along the gas path. In this case, the combs 5 are connected by means of 6 with springs 7 mounted on the crosspiece 8, which in turn are connected by means of 9 with spring 10 mounted on the frame 4. Heat exchange packages 2 are connected to collectors 11, which are suspended by means of threads 12 The middle sections of pipes 3 bypass beams are connected to crosshead i 8 by means of gaskets 13, clamp suspensions 14 and tons g 15. The load from heat exchanging bags 2, bypass beams of pipes 3 and collectors 11 is distributed over bars 6, 9, and 12, and the uniform distribution of the load over the latter ensures It is controlled by adjusting the springs 7 and 10 Fastening the comb 5 with pipes 3 bypass bundles in the area of their vertical sections reduces the stresses in the pipes 3, and increasing the number of packages 2 in rows along the gases reduces the slagging of packages 2. This increases the reliability of the steam the boiler. Claims of the invention: Steam boiler containing a series of tubes of heat exchanger packages with a predetermined number of the latter in each row installed in the rotary chamber of the gas duct and the bypass bundles of pipes located outside the gas duct; adjacent rows and suspended from the frame using combs fastened to them, characterized in that, in order to increase reliability by reducing the stresses in the pipes, suction beams and reduction of slagging of heat exchanging packets, combs fastened with pipes of overflow beams in the zone of their vertical sections, and the number of packets in rows increases along the gas path. Sources of information taken into account in the examination 1.Patent of England No. 827882, cl. 123 (3) d, publ. 1960 2. USSR author's certificate number 593047, cl. F 22 at 37/20, 1976.