SU699314A1

SU699314A1 - Apparatus for generating acoustic oscillation in heat-exchange apparatus

Info

Publication number: SU699314A1
Application number: SU762365141A
Authority: SU
Inventors: Вадим Михайлович Шептун; Виктор Николаевич Чередниченко; Нина Трофимовна Парамонова; Виктор Васильевич Снижко
Original assignee: Предприятие П/Я А-3732
Priority date: 1976-05-28
Filing date: 1976-05-28
Publication date: 1979-11-25

Description

(54) УСТРОЙСТВО ДЛЯ СОЗДАНИЯ АКУСТИЧЕСКИХ КОЛЕБАНИЙ В ТЕПЛООБМЕННОМ АППАРАТЕ(54) DEVICE FOR CREATING ACOUSTIC OSCILLATIONS IN HEAT EXCHANGE EQUIPMENT

Изобретение относитс к устройствам, генерирующим звуковые колебани с заданной частотой в теплообменных аппаратах, используемых в химической промьшшенности дл нагрева или охлаждени газов.The invention relates to devices that generate sound vibrations with a given frequency in heat exchangers used in chemical industry for heating or cooling gases.

Известны устройства дл создани акусти4ecKitx колебаний в теплообменном аппарате, содержащие трубопроводы с резонансными полост ми в его стенке, размещенными вдоль него с заданным шагом 1 .Devices are known for creating acoustic4ecKitx oscillations in a heat exchanger apparatus, comprising pipelines with resonant cavities in its wall, arranged along it with a predetermined pitch 1.

Недостаток известных устройств заключаетс в том, что объем резонансных полостей в них нерегулируем, так как полости имеют посто нную глубину, вследствие чего газообразный поток в процессе работы теплообменника подвергаетс при разных скорост х колебани м с посто нной частотой.A disadvantage of the known devices is that the volume of the resonant cavities in them is unregulated, since the cavities have a constant depth, as a result of which the gaseous flow during operation of the heat exchanger undergoes fluctuations at a constant frequency at different speeds.

Цель изобретени - обеспечить регулирование частоты колебаний при работе теплообменното аппарата на газообразной среде.The purpose of the invention is to provide control of the oscillation frequency when the heat exchanger of the apparatus is operated on a gaseous medium.

Это достигаетс тем, что полости расположены под углом к поверхности трубопровода и встречно к потоку среды, и кажда полость снабжена подвижным ограничителем, а такжеThis is achieved by the fact that the cavities are located at an angle to the surface of the pipeline and opposite to the flow of the medium, and each cavity is provided with a movable restraint, as well as

тем, что полости имеют различные живые сечени .the fact that the cavities have different living sections.

На фиг. 1 изображено соединение описываемого устройства с теплообменным аппаратом; на фиг. 2 - сечение А-А фиг. Г, на фиг. 3 крупным планом изображен один из участков описываемого устройства; на фиг. 4 - изображен общий вид тегиюобменного аппарата, соединенного с описываемым устройством; на фиг.5 изображен узел I геплообменного апнара та фиг. 4.FIG. 1 shows the connection of the described device with a heat exchanger; in fig. 2 is a section A-A of FIG. G, FIG. 3 close up shows one of the sections of the described device; in fig. 4 shows a general view of a tagging device connected to the described device; FIG. 5 shows the node I of the heme exchanger of FIG. four.

Устройство содержит трубопровод 1 с резонансными полост ми 2, в которых установлены ограни штели 3. Устройство присоединено к теплообменному аппарату, содержащему корпус 4, трубы 5, укрепленные в трубных репгетках 6 и 7, термостойкие уплотнители 8 и 9, крыщку 10. днище II, патрубок 12 дл подвода нагрева емой (охлаждаемой) среды, патрубок 13 дл его отвода, патрубок 14 дл отвода конденсата , патрубок 15 дл отвода несконденсировавщих паров и газов.The device comprises a pipeline 1 with resonant cavities 2, in which the limits of the rod 3 are installed. The device is connected to a heat exchanger, comprising a housing 4, pipes 5 fixed in pipe bells 6 and 7, heat-resistant seals 8 and 9, a lid 10. bottom II, pipe 12 for supplying a heated (cooled) medium, pipe 13 for its removal, pipe 14 for draining condensate, pipe 15 for removing non-condensing vapors and gases.

Claims

The device works as follows. 369 The heated solution enters the heat exchange apparatus through nozzle 12. Heating steam at a speed of 10–40 m / s enters through conduit 1. Resonant cavities 2 when a flow of coolant flows around the generator at a given frequency. The frequency is determined by calculating the ratio of the depth of the cavity to its diameter and is controlled by movable limiters 3. When the ratio of the depth of the cavity to its diameter is equal to the unit, the cavity generates vibrations with a maximum frequency. The swirling steam flow at a given oscillation frequency flows around the heat exchange tubes 5, as a result, the tubes vibrate, the condensate film on the pipes collapses, the boundary layer on the wall - heated solution section decreases. The heated solution is discharged from. heat exchange through pipe 13, and condensed steam through pipe 14. The presence of adjustable resonant cavities located in a piping wire tangentially attached to the body of the heat exchanger for introducing a gaseous medium provides a swirling flow of gaseous medium with a given oscillation frequency in the annular space. Fluid oscillations are perceived by heat exchanger tubes fixed in tube grids with end and side elastic heat-resistant seals, which reduce the transmission of inertial loads caused by vibrations of the heated (cooled) material in the heat exchange tubes to the heat exchanger body. The use of the invention allows to intensify the heat exchange process by 20-30%. The heat transfer coefficient increases to 800-900 kcal / m 2 h. The heat exchanger can be used for working with viscous and inlaying solutions, since the incrustation of the internal surfaces of the heat exchange tubes is significantly reduced due to the vibration of the pipes. In addition, the interwash time is increased. Claim 1. A device for creating acoustic oscillations in a heat exchanger apparatus, comprising a pipeline with resonant cavities in its wall placed along it with a predetermined pitch, characterized in that, in order to control the oscillation frequency when the heat exchanger operates on a gaseous medium, the cavities are located At an angle to the surface of the pipeline and counter to the flow of the medium, and each cavity is provided with a movable restraint.

2. A device according to claim 1, characterized in that the cavities have different living sections. Sources of information taken into account during the examination 1. USSR author's certificate No. 80063, cl. F 28 F 13/10, 1944.

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