SU658358A1

SU658358A1 - Steam generator

Info

Publication number: SU658358A1
Application number: SU762320858A
Authority: SU
Inventors: Феликс Анатольевич Серант; Владислав Васильевич Булгаков; Владимир Николаевич Точилкин; Лев Ицкович Пугач; Юрий Леонидович Маршак; Ким Васильевич Шахсуваров; Григорий Танхемович Левит; Алексей Васильевич Патрикеев; Николай Васильевич Павлов; Иосиф Иосифович Марьямчик; Владимир Яковлевич Литинецкий; Борислав Петрович Устименко; Владимир Николаевич Змейков; Леонид Александрович Гудкевич; Юрий Алексеевич Харкин; Даниил Львович Итман; Белеслав Михайлович Краснов; Иван Алексеевич Сотников; Брий Иванович Окерблом; Геогрий Александрович Мыслин
Priority date: 1976-02-04
Filing date: 1976-02-04
Publication date: 1979-04-25

Description

(54) ПАРОГЕНЕРАТОР(54) STEAM GENERATOR

1one

Изобретение относитс к паровым котлам с естественной и принудительной циркул цией , рассчитанным на сжигание твердого, жидкого и газообразного топлива.This invention relates to steam boilers with natural and forced circulation, designed to burn solid, liquid and gaseous fuels.

Известны парогенераторы, содержащие вертикальную кольцевую топку с установленными в ее верхней части горелками и конвективный газоход, размещеьшый в центре топки 1.Steam generators are known that contain a vertical annular furnace with burners installed in its upper part and a convective flue located in the center of the furnace 1.

Недостатком таких парогенераторов вл етс сложность изготовлени , ремонта и эксплуатации, низка эффективность сжигани топлива и повышенное гидравлическое сопротивление.The disadvantage of such steam generators is the difficulty of manufacturing, repair and operation, low fuel efficiency and increased flow resistance.

Наиболее близким к предложенному по технической сущности вл етс парогенератор , содержащий образоЕшнную соосно размещенными равносторонними призмами вертикальную кольцевую топку с установленными в ее нижней части на наружной стенке по касательной к условной окружности горелками и конвективные газоходы 2.The closest to the proposed technical entity is a steam generator containing a vertical annular furnace with a coaxially placed equilateral prism, with burners and convective gas ducts 2 installed in its lower part on the outer wall tangentially to the conventional circumference.

Конвективные газоходы расположены внутри топки, что усложн ет эксплуатацию и ремонт, а эффективность сжигани топлив понижена вследствие того, что поперечные размеры тонки и диаметр условной окружности выбраны не оптимальными.Convective gas ducts are located inside the furnace, which complicates operation and repair, and the efficiency of fuel combustion is reduced due to the fact that the transverse dimensions are thin and the diameter of the conventional circle is not optimal.

Целью изобретени вл етс упрощение эксплуатации и повышение эффективности сжигани .The aim of the invention is to simplify operation and increase combustion efficiency.

Это достигаетс тем, что в предложенномThis is achieved in that in the proposed

парогенераторе конвективные газо.ходы выполнены пр моугольными и размен1ены с внеп1ней стороны топки, горелки установлены на каждой грани стенки и диаметр условной окружности составл ет 0.5-0,75 D,the steam generator convective gas passes are rectangular and exchangeable on the external side of the furnace, the burners are installed on each side of the wall and the diameter of the conventional circle is 0.5-0.75 D,

а ширина кольца топочной камеры равна . 0,2-0,25 D, где D -- диаметр окружности, вписанной в наружную призму топки, при это.м количество газоходов не превышает количества граней в наружной призме тонки . На внутренней стенке топки в ее верхнеГ; части равномерно по периметру встречно горелкам могут быть установлены сопла подачи рециркулирующих газов.and the width of the ring of the combustion chamber is. 0.2-0.25 D, where D is the diameter of a circle inscribed in the outer prism of the firebox, with this, the number of ducts does not exceed the number of faces in the outer prism is thin. On the inner wall of the furnace in its upper; parts evenly around the perimeter of the counter burners can be installed nozzle supply recirculating gases.

На фиг. 1 схематически изображен парогенератор , продольный разрез; на фиг. 2 -FIG. 1 schematically shows a steam generator, a longitudinal section; in fig. 2 -

разрез А-А на фиг. 1; на фиг. 3 - разрез Б--Б на фиг. 1.Section A-A in FIG. one; in fig. 3 - section B - B in FIG. one.

Claims

The steam generator contains a shielded annular furnace 1, the outer 2 and inner 3 walls of which are formed by coaxially spaced equilateral equism. and rectangular convective gas ducts 4 with heating surfaces 5 placed on the outside of the furnace 1. In the lower part of the furnace 1 on each face of the outer wall 2 tangential to the conventional circle, the diameter of which is 0.5-0.75 D, install the burner foam 6. In the upper part of the furnace 1 on the inner wall 3, evenly along its perimeter, the burners 6 are fitted with nozzles 7 for feeding recirculating gases. The lower part of the furnace 1 is made in the form of a cold funnel 8 with a window 9 for the removal of ash and slag. The number of convective gas ducts 4 is chosen depending on the power of the steam generator, but it should not exceed the number of faces of the outer wall 2. The inner walls 3 form a shaft 10 in which sites 11 are located for inspecting the inner walls 3 and maintaining the blower devices installed on them. For servicing the heating surfaces 5, the ducts 4 are provided with pads 12. The steam generator operates as follows. The fuel-air mixture through the burner 6 tangentially to the conventional circle enters the furnace 1, where the fuel is burned. The diameter of the conventional circle is chosen 0.5–0.75 D, where D is the diameter of the circle inscribed in the outer furnace 1, which, together with the execution of the furnace 1 with a ring width of 0.2– 0.25 D, provides optimal aerodynamics, allowing you to increase efficiency c1T) wounds and exclude an active effect (j: iaKC.ia on shielded walls 2 and 3 of the Firebox 1. As the fuel burns out and 1P1I of combustion products moves to the top of the firebox 1, heat is transferred from the flame to shielded walls 2 and 3, as a result what before the convective gas ducts 4 temperature topo gases are reduced to a level sufficient to ensure reliable operation of heating surfaces 5. Low-temperature gases are introduced into the furnace I through nozzles 7. The reciprocating movement of the recirculated gases eliminates the residual torch twist at the top of the furnace 1, which ensures uniform flushing and heating These are the heating surfaces 5 located in the gas duct 4. The flue gases from thin 1 are filled into the gas ducts 4 and then removed from the steam generator. Convective ducts 4, made of rectangular cross-section, are well assembled with an annular furnace 1, which allows, by changing the cross-section of ducts 4 and their number, depending on the power of the steam generator and the type of fuel to be reduced, it is easy to place the necessary number of heating surfaces 5. Moreover, The external arrangement of the gas ducts 4 provides the convenience of their operation and maintenance, as well as the manufacturability of the discharge of gases into convective gas ducts from a multi-faceted ring furnace with a gas-tight screened I eat exterior walls. When burning solid fuel in the furnace 1, cleaning of the inner walls 3, which are most exposed to ash contamination, is carried out by blowing devices installed on these walls. If necessary, similar devices can also be installed on the walls 2. The ash particles falling out during the combustion of solid fuel and slag are separated into the cold funnel 8 and removed from the steam generator through the windows 9. Claims. A steam generator containing a vertical annular furnace formed coaxially with equilateral prisms with burners installed in its lower part on the outer wall tangential to the circumference and convective gas ducts, characterized in that, in order to simplify operation and improve the efficiency of combustion, convective gas ducts are rectangular and placed on the embedded side of the furnace, the burners are installed on each side of the wall and the diameter of the conditional circle is 0.5-0.75 D, and the width of the ring of the combustion chamber The chambers are 0.2-0.25 D, where D is the diameter of a circle inscribed in the outer prism of the firebox. 2. A steam generator according to claim 1, characterized in that the number of gas ducts does not exceed the number of fabrics in the outer prism of the firebox. 3. A steam generator according to claim 1, characterized in that nozzles for the recirculating gases are installed on the inner wall of the thin part in its upper part evenly around the perimeter of the counter burners. Sources of information taken into account during the examination 1. USSR author's certificate No. 111464, cl. F 22 B 29/06, 1956.

2. Patent USh.4 .1 3593690, cl. 122--235. 1971.

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