RU5635U1 - DIRECT TUBE BOILER - Google Patents

Abstract

A once-through water tube boiler containing a combustion chamber with a burner, air vents, drainage pipes, an explosive valve, exhaust ducts, radiation and convective heating surfaces formed by screens made in the form of collectors with screen tubes welded between them and interconnected, for example, bypass pipes , the radiation heating surface is formed by screens located on the side, ceiling and rear walls of the combustion chamber, and the collectors of the screens of the rear wall of the combustion chamber in are filled with horizontal and screen tubes are vertical, in addition, the screens forming the convective heating surface are located in the gas ducts of the boiler, separated by partitions from the furnace chamber, characterized in that in the screens forming the convective heating surface and the radiation heating surface located on the side walls the combustion chamber, the collectors are vertical, and the screen pipes are horizontal.

Description

I I j I If. || DIRECT-WATER BOILER BOILER --- - MKI F 22B, / 00 A utility model relates to heat power engineering and can be used in boiler units. The Minsk-1 boiler is known, consisting of cast-iron tubular sections and having multi-way gas movement not only across the boiler, but also along the seka package, for which partitions are installed. As a result, the gas washing rate of the sections increases, which, in turn, intensifies the heat transfer in the convective part. Gases in the furnace rise up and down the intercostal space to the lower nipple. Then, gathering in the lower lateral gas duct, the gases move to the front and enter the gas chamber, then go to the annular space, where they make a three-way movement along the stack of sections and exit to the tail, lower part of the boiler. A washer device is installed in the boiler, which creates a consistent movement of water through a package of sections. The disadvantage of the Minsk-1 boiler is its low operational reliability due to the failure of the cast-iron sections when the water circulation stops and the low heat transfer coefficient. Known steel direct-flow water tube boiler 2, used instead of boilers with cast-iron heating surfaces and selected as a prototype for the majority and materiality of the common features from the number of analogues studied., The boiler consists of a combustion chamber with burner}: devices, radiation and convection heating surfaces. Radiation heating surface is located on the side, ceiling and rear walls of the combustion chamber. The convective heating surface is located in the gas ducts of the boiler. Both convective and radiation heating surfaces consist of screens made in the form of collectors with screen tubes welded between them, and screens of the convective heating surface and screens of the radiation heating surface located on the back wall of the combustion chamber are made in the form of horizontal collectors with vertical screen pipes between them. The collectors of all screens are equipped with partitions for water circulation. Screens are interconnected through flow pipes. The furnace chamber and boiler flues are separated by a brick partition. The boiler also contains air exhaust vents, drainage pipes, and an explosion valve. The disadvantage of the prototype is the low efficiency (KPD), due to the low heat transfer of flue gases to the longitudinally washed pipes of the heating surfaces. I I 1, J L |; k This is achieved by the fact that in a once-through water tube boiler containing a combustion chamber with a burner, convective and radiation heating surfaces formed by screens made in the form of a collector with screen tubes welded between them, interconnected, for example, bypass pipes, a heating radiation surface , is formed by screens located on the side, ceiling and rear walls of the combustion chamber, and the collectors of the rear wall screens are horizontal and the screen pipes are vertical; convective heating surface is located in the gas ducts of the boiler, separated from the combustion chamber by partitions. The boiler is equipped with air vents, drainage pipes, an explosive valve and exhaust ducts. The screens forming the convective heating surface and the radiation heating surface on the side walls of the combustion chambers are made with vertical collectors and horizontal / screen tubes. The implementation of the screens in this way is “new, distinctive, and determines the suitability of the utility model for the novelty criterion. The proposed direct-flow water tube boiler is shown in FIG. 1-4, and consists of a combustion chamber in the lining 2 and a burner 3, drainage pipes 4 with valves, air vents 5, boiler flues b and exhaust flues 7, a radiation heating surface 8, consisting of side, ceiling and rear heating surfaces located in the combustion chamber 1; convective heating surface 9 located in the gas ducts of the boiler b. Convective 9 and radiation 8 heating surfaces consist of screens - {Fig. 4) made in the form of collectors 10 and shield tubes welded between them 11. The boiler is equipped with an explosive valve 12, an inlet water pipe 13 and an outlet water pipe 14, as well as bypass pipes 15. The combustion chamber 1 and the gas ducts of the boiler 6 are separated by a partition .J6 Side screens of the radiation heating surface 8 and screens of the convective heating surface are mounted on metal sheets 17, based on the foundation of the boiler. The collector screens are equipped with partitions 18 (Fig. 4) to ensure a given circulation of water. The boiler is equipped with instrumentation and automation (Fig. Not shown). The boiler operates as follows. Before starting the boiler, its pipe system is filled with water through the inlet pipe 13 with open air vents 5, which are closed after the appearance of water in them. Next, circulation pumps (not shown in Fig.) Are turned on, which provide water circulation through the boiler. Then, the boiler is ignited, for which fuel is supplied to the burner, for example, GBL brand, which is ignited by a manual or electric igniter. The fuel burns in the combustion chamber 1, where the heat from the flame of the burning fuel is transferred to the radiation surfaces of the boiler 8. Further, the flue gases of the burned fuel enter the gas ducts of the boiler b, where they wash the convective heating surface 9, after which they are directed through the exhaust ducts 7 into the chimney. Partitions 18 located in the collectors of 10 screens,

provide a given circulation of water in the heating surface at a speed of 0.5 - 1 m / s, depending on the number of partitions. The design of the screens of the convective heating surface 9 and the screens of the radiation heating surface located on the side walls of the combustion chamber 1 provides transverse washing of the screen tubes 11 with flue gases, which, in turn, leads to an increase in the heat transfer coefficient, and, as a result, to an increase in efficiency .d. boiler, which reaches in the proposed design 91%. To empty the boiler, drain pipes 4 with valves are used. When an explosive mixture is formed in the boiler ducts, an explosive valve 12 is triggered.

Director of Teplocom-1 I.9 LLP. Polyakovsky

information sources

1.A.N. Volkov Samyanganie gas and liquid fuels in low-power boilers, St. Petersburg Nedra, 1989. , & p. 50-52

2. Taganrog plant Red boiler, boiler -KS-1

Claims (1)

A once-through water tube boiler containing a combustion chamber with a burner, air vents, drainage pipes, an explosive valve, exhaust ducts, radiation and convective heating surfaces formed by screens made in the form of collectors with screen tubes welded between them and interconnected, for example, bypass pipes , the radiation heating surface is formed by screens located on the side, ceiling and rear walls of the combustion chamber, and the collectors of the screens of the rear wall of the combustion chamber in are filled with horizontal and screen tubes are vertical, in addition, the screens forming the convective heating surface are located in the gas ducts of the boiler, separated by partitions from the furnace chamber, characterized in that in the screens forming the convective heating surface and the radiation heating surface located on the side walls the combustion chamber, the collectors are vertical, and the screen pipes are horizontal.