SU735868A1

SU735868A1 - Double-window shield for steam generator fire box

Info

Publication number: SU735868A1
Application number: SU782568139A
Authority: SU
Inventors: Валентин Сергеевич Стаценко; Владимир Иванович Власенко; Виктор Иванович Иваненко; Трофим Федорович Усачев; Анатолий Александрович Банько
Original assignee: Производственное объединение "Красный котельщик"
Priority date: 1978-01-09
Filing date: 1978-01-09
Publication date: 1980-05-25

Description

Изобретение относится к двусветным ' экранам топочной камеры и мажет быть использовано преимущественно в котельной технике.The invention relates to double-screen firebox screens and may be used primarily in boiler equipment.

Известны двусветные экраны, содер- ’ жащие входной и выходной коллекторы, подключенные к двум установленным в ряд группам теплообменных труб, образующим между собою проем для прохода газов [1]. ₁₀ Double-screen screens are known that contain input and output collectors connected to two groups of heat-exchange tubes installed in a row, forming an opening for gas passage between them [1]. ₁₀

Крайние со стороны проема трубы каждой группы имеют большую по сравнению со смежными трубами освещенную поверх*· ность, а следовательно, и тепловосприятие, что увеличивает паросодержание в ₁₅них и приводит к пережогу и выходу их из строя.The pipes of each group that are extreme on the side of the aperture have a larger surface * compared to adjacent pipes, and, consequently, heat perception, which increases the vapor content in _{15 of} them and leads to burnout and failure.

Наиболее близким техническим решением к предлагаемому являются двусветные экраны, содержащие входной и выходе jq ной коллекторы, подключенные по краям к расположенным в ряд двум группам теплообменных труб, образующим цент— ‘ ральный проем, со стороны которого по крайней мере две крайние трубы каждой группы установлены с перекрестным , смещением и сменой их взаимного положения [2].The closest technical solution to the proposed one is double-screen, containing the inlet and outlet jq collectors, connected at the edges to two groups of heat-exchange pipes arranged in a row, forming a central opening, on the side of which at least two extreme pipes of each group are installed with cross, displacement and change of their relative position [2].

Однако произвольное перекрестное смещение крайних труб не обеспечивает оптимального выравнивания тепловой разверки.However, the arbitrary cross-displacement of the outer tubes does not provide optimal alignment of the thermal scan.

Цель изобретения - повышение надежности экрана в работе путем оптимального выравнивания тепловой разверки.The purpose of the invention is to increase the reliability of the screen in operation by optimally aligning the thermal scan.

Поставленная цель достигается тем, что перекрестное смещение труб выполнено на расстояний от нижней точки экрана, составляющем 0,1-0,9 от высоты последнего.This goal is achieved by the fact that the cross displacement of the pipes is made at distances from the lower point of the screen, comprising 0.1-0.9 from the height of the latter.

На фиг. 1 изображен предлагаемый экран с перекрестным’смещением труб каждой группы в одной точке, общий вид; на фиг. 2 - узел 1 на фиг. 1; на фиг. 3— разрез А—А на фиг. 2;>на фиг. 4 - вид по стрелке Б на фиг. 2* на фиг. 5 - экран с перекрестным смещением труб каждой группы в двух местах по высоте экрана, общий, вид; на фиг. 6 - узел Ц наIn FIG. 1 shows the proposed screen with cross’s displacement of pipes of each group at one point, general view; in FIG. 2 - node 1 in FIG. one; in FIG. 3 — section A — A in FIG. 2;> in FIG. 4 is a view along arrow B in FIG. 2 * in FIG. 5 - screen with the cross-displacement of the pipes of each group in two places along the height of the screen, general view; in FIG. 6 - node Ts on

фиг. 5; на фиг. 7 - вид по стрёлке В на фиг. 6.FIG. 5; in FIG. 7 is a view along arrow B in FIG. 6.

Экран содержит входной 1 и выходной 2 коллекторы, подключенные по краям к даум группам теплообменных труб 3, образующим центральный проем 4, со стороны которого по крайней мере две крайние трубы каждой группы установлены с перекрестным смещением и сменой их взаимного положения на расстоянии от¹нижней точки экрана, составляющем О,ΙΟ, 9 от высоты последнего.The screen contains an inlet 1 and an outlet 2 collectors connected at the edges to the daum groups of heat exchange tubes 3, forming a central opening 4, on the side of which at least two extreme pipes of each group are installed with cross displacement and changing their relative position at a distance from ¹ lower point screen, comprising O, ΙΟ, 9 from the height of the latter.

Двусветный экран работает следующим образом. Нагреваемая среда поступает во входной коллектор 1 и раздается по ' двум группам теплообменных труб 3, нагревается теплом, излучаемым топкой (на чертежах не показана).: При этом, если нагреваемой средой является вода, ' часть нрследаей превращается в пар ;и обрадуется пароводяная смесь, которая поступает в выходной коллектор 2. Иэза перекрестного смешения И смены мео· тоположения крайних труб паросодержанйе и температура среды в них выравнивается, t. е. снижается температурная разверка.The dual-screen screen operates as follows. The heated medium enters the inlet manifold 1 and is distributed in two groups of heat exchange tubes 3, is heated by the heat emitted by the furnace (not shown in the drawings): In this case, if the heated medium is water, some of the trace will turn into steam and a steam-water mixture will form , which enters the outlet manifold 2. Ieza cross-mixing And changing the location of the outermost tubes of steam and the temperature of the medium in them equalizes, t. e. the temperature sweep is reduced.

• Наиболее целесообразно применение Предлагаемого технического решений для двусветных экранов, *в которых условия• The most appropriate application of the proposed technical solutions for dual-screen screens, * in which the conditions

735868 4 работы крайних труб резко отличаются от работы средних . Это имеет место в двусветных экранах соотносительными шагами между трубами -~· =735868 4 the work of the extreme pipes are very different from the work of medium. This takes place in double-screen screens with relative steps between pipes - ~ · =

S - шаг между трубами; труб.S is the pitch between the pipes; pipes.

Claims

The invention relates to double-sided screens of the combustion chamber and can be used mainly in the boiler room technique. Double-sided screens are known, containing inlet and outlet collectors, connected to two groups of heat-exchange tubes installed in a row, forming between themselves an opening for the passage of gases m. The extremes on the side of the opening of the pipe of each group have an illuminated surface compared with adjacent pipes, and, consequently, heat distribution, which increases the steam content in them and leads to burnout and release. The closest technical solution to the proposed package is double-sided screens containing inlet and outlet collectors connected along the edges to two groups of heat exchange tubes arranged in a row, forming a central opening, on the side of which at least the extreme pipes of each group are installed. with a cross offset and a change in their relative position. However, the arbitrary cross-shift of the outermost tubes does not ensure optimal thermal expansion. The goal of eteni is to increase the reliability of work through optimal alignment & retmoBdl sweep. The goal was achieved by the fact that the cross-mixing of the pipes was made at a distance from the lower point of the screen, which was 0.1-0, 9 from the height of the latter. FIG. 1, the proposed screen with a cross-displacement of the tubes of each rpymtbi at one point, general view; in fig. 2 —Usep T in FIG. one; in fig. 3A-A in FIG. 2; FIG. 4 - view along arrow B on. 2; in fig. 5 - screen with a cross-displacement of the pipes of each group in two places along the height of the screen, general, view; in fig. 6 - node And 7 g. 5j-ria. 7 is a view along arrow B in FIG. 6. The screen will hold input I and output 2 sets: connected at the edges to the daum groups of heat exchanging pipes 3, the window has a central opening 4, from the side of which at least two edges of each pipe are set with cross offset and change of yus go ahead about position on the distance wines from | the bottom point of the screen, bd0, 9 from the height of the latter. The two-color screen works as follows. The heated medium enters the inlet manifold 1 n distributed through the pears of the heat-turbine tubes 3, heated by the heat emitted by the com- posite (not shown in the drawings J., if the heated medium is avaised here, the H.ped enters the output collector 2. Hia-3d nepekpecTHOTp laughter and change the temperature of the end pipe of the steam tube & and the temperature of the feeds in them is equalized, i.e. the temperature ipaabepKeu decreases:; outside of the 11th eligible t zycheskbgo The solutions of dus Fusvets e & rasnov, in condition 8 of the extreme pipes work, differ sharply from the work of medium ones. Claims of the invention A double-colored screen of a steam generator furnace containing inlet and outlet collectors connected at the edges to two groups of heat exchange Pipes located in a row, a central opening on the side of which at least two extreme pipes of each group are installed with a cross offset and changingrelative position, so that in order to increase the reliability, the cross-displacement of pipes in the distance from the lower point of the screen was 0.1-0.9 from the height of the sequence. Sources of information taken into account in the examination 1.1a tec jmcvuemoderit e, France, 1966, no. 6, p. 225-234.

2. German patent Ng 200779, class, 13 d, 2/01, con. 1908.

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