SU1384879A1 - Horizontal rectangular straight-through boiler - Google Patents

Abstract

The invention relates to energy and m. used in the design of mobile steam power plants. The purpose of the invention is higher & A / PCh N nonbentibnomi., Evaponate enonomizer / N) 15 12. reduction of operational reliability and improvement of manufacturability of the boiler. For this, a group of screens is grouped into a tape having 4 sections connected by V-circulating channels. One section forms successively connected along the heated medium right screen 5 of the rear wall of the lifting duct, right screen 6 of the bottom of the gas duct, right screen 7 of the rear wall of the furnace, right screen 8 of the furnace ceiling, upper screen 9 of the front wall of the furnace, upper screen 10 of the right side wall of the furnace and both ducts, the upper screen 11 of the rear wall of the lowering duct 3, the upper screen 12 of the left side wall of the furnace and the flues, the middle Screen 13 of the lower part with S (L omi., enonomizer 15 12.

Description

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front wall of the firebox and the right screen 14 of the hearth of the firebox. The second section of the tape forms a series of connected punching the progress of the heated medium left and lower screens 15-21,23,24, respectively, in this boiler are absent

Collectors for transferring the steam-water mixture from one screen to another, which excludes thermal-hydraulic sweeps in a heated medium, insufficient cooling and burn-out of individual screen tubes, 2 sludge.

one

The invention relates to power engineering, in particular, to a horizontal rectangular flow boiler, and can be used in the design of mobile steam generating plants.

The purpose of the invention is to increase the operational reliability and improve the manufacturability of the horizontal right-angled direct-flow boiler.

FIG. 1 shows a general view, a horizontal rectangular continuous boiler; in fig. 2 - boiler screen, general view, in axonometric view.

The horizontal rectangular ram boiler contains a furnace 1, as well as lifting and lowering ducts 2 and 3, respectively. The furnace 1 and the ducts 2 and 3 are framed by screens of pipes included in the path of the heated medium. The tubes of the screens are grouped into a tape having two sections 4 unheated V-shaped cords connected.

The first tape section forms the right screen 5 of the rear wall of the lifting duct 2, the right screen 6 of the bottom of the gas duct 2, the right screen 7 of the rear wall of the furnace 1, the right screen 8 of the ceiling I of the furnace I, the upper screen 9 of the front wall of the furnace 1 the upper screen 10 of the right side wall of the furnace 1 and ducts 2 and 3, the upper screen 11 behind the wall of the lowering duct 3, the upper screen 12 of the left side wall of the furnace 1 and the ducts 2 and 3, the middle screen 13 of the lower part of the front wall of the furnace I and the right screen 14 hearth furnace 1.

The second section of the tape forms a series of left-connected against the stroke of the heated medium 15

the rear wall of the duct 2, the left screen 16 of the bottom of the duct 2, the left screen 17 of the rear wall of the furnace 1, the left screen 18 of the ceiling of the furnace 1, the middle screen I9 of the upper part of the front wall of the furnace I, the lower screen 20 of the right side wall of the furnace 1 and the ducts 2 and 3 , the lower screen 21 of the rear wall of the duct 3, the lower screen 22 of the left side wall of the furnace 1 and the ducts 2 and 3, the lower screen 23 of the front wall of the furnace 1 and the left screen 24 of the furnace 1.

The pipes of the left screen 15 of the rear wall of the duct 2 are connected to a convective evaporator 25 connected in turn with the output collector 26, and the pipes of the right screen 5 of the rear wall of the duct 2 are connected to a convective economizer 27 connected in turn to the input collector 28 and collection manifold 29.

The pipes of the right and left cranes 7 and 17 of the back wall of the furnace I are diluted in the lower part into the bypass festoon 30. The furnace I is equipped with a burner 31, and the lowering flue 3 is connected to the flue 32. The pipes of all screens can be grouped into two tapes.

The horizontal rectangular continuous flow boiler operates as follows.

When the burner 31 is operating, the combustion products pass through the furnace 1, the festoon 30, the lifting duct 2, the lower duct 3 and through the duct 32 out of the boiler. In this case, the combustion products are cooled, heating the medium, which sequentially passes through the collector

28, the convective economizer 27 and the collector 29, where it is heated and then transferred to the first belt section, where the right screen 5 of the rear wall of the lifting duct 2 passes successively, the right screen 6 of the bottom of the gas duct 2, the right screen 7 of the rear wall of the furnace 1, the right screen 8 of the ceiling - ka firebox 1, the upper screen 9 fron-. firewall 1, the upper screen 10 of the right side wall of the furnace 1 and ducts 2 and 3, the upper screen II of the rear wall of the blast duct 3, the upper screen 11 of the rear wall of the lowering duct 3, the upper screen 12 of the left side wall of the furnace 1 and the ducts 2 and 3 , the middle screen 13 of the lower part of the front wall of the furnace 1 and the right screen 14 of its hearth. Next, the heated medium is passed through the unheated V-shaped rolls 4 to the second belt section, where it successively passes the left screen 24 of the hearth furnace 1, the lower screen 23 of its front wall, the lower screen 22 of the left side wall of the furnace 1 and the gas ducts 2 and 3 the bottom screen 21 the rear wall of the duct 3, the lower screen 20 of the right side wall of the furnace 1 and ducts 2 and 2, the middle screen 19 of the upper part of the front wall of the furnace 1, the left screen 18, its ceiling, the left screen 17 of the rear wall of the furnace 1, the left screen 16 of the bottom of the duct 2 and the left screen 15 of its rear wall. Further, the heated medium is transferred to the convection evaporator 25 and then through the output collector 26 is diverted to the consumer.

In such a boiler, there are no collectors for transferring the steam-water mixture from one to the other screens, which excludes thermal-hydraulic sweeps in the heated medium, insufficient cooling and burnout of individual pipes. screens, which increases the operational reliability of the boiler. On the other hand, the absence of collectors with manual welding of pipes to them, as well as the absence of bends in the pipe tape in the plane of the screens, sharply improves the boiler's processability. The presence of two ducts makes it possible to place in them a convective surface sufficient to cool the flue gases to an economically optimal value corresponding to a high efficiency.

Claims (1)

Invention Formula A horizontal rectangular sweeping boiler containing a firebox, as well as lifting and lowering ducts, framed by shields made of pipes included in the heated medium path, characterized in that, in order to increase operational reliability and improved processability, the shielding pipes are grouped into a tape having sections connected by V-shaped rolls, one of which forms the right screen of the rear wall of the lifting duct, connected in series along the heated medium, the right screen of its hearth, the right. screen of the back wall then pki, the right screen of its ceiling, the upper screen of the front wall of the furnace, the upper screen of the right side wall of the latter and both ducts, the upper screen of the rear wall of the lowering duct, the upper screen of the left side wall of the furnace and both ducts, middle-1 1 1 screen of the lower part of the front wall of the furnace and the right screen its hearth, and another of the mentioned sections of the tape, forms the left rear screen of the rear wall of the lifting duct, the left screen of its bottom, the left screen of the rear wall of the furnace, the left screen of its ceiling, the middle screen of the upper part Part of the front wall of the furnace, the bottom screen of the right side wall of the latter and both ducts, the bottom screen of the rear wall of the standpipe gas duct, the bottom screen of the left side wall of the furnace and both ducts, the bottom screen of the front wall of the furnace and the left screen of the bottom. 3 / (Pue. I gz 29 27 L 30 26 2 21 3 2Q 32