SU1416847A1 - Double-pipe heat exchanger - Google Patents

Double-pipe heat exchanger Download PDF

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Publication number
SU1416847A1
SU1416847A1 SU864141323A SU4141323A SU1416847A1 SU 1416847 A1 SU1416847 A1 SU 1416847A1 SU 864141323 A SU864141323 A SU 864141323A SU 4141323 A SU4141323 A SU 4141323A SU 1416847 A1 SU1416847 A1 SU 1416847A1
Authority
SU
USSR - Soviet Union
Prior art keywords
strips
width
heat exchanger
adjacent
pipe
Prior art date
Application number
SU864141323A
Other languages
Russian (ru)
Inventor
Михаил Яковлевич Розкин
Александр Львович Копорулин
Лариса Александровна Шаля
Виктор Павлович Родькин
Олег Викторович Корчевский
Иван Николаевич Пивень
Original Assignee
Днепропетровский инженерно-строительный институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Днепропетровский инженерно-строительный институт filed Critical Днепропетровский инженерно-строительный институт
Priority to SU864141323A priority Critical patent/SU1416847A1/en
Application granted granted Critical
Publication of SU1416847A1 publication Critical patent/SU1416847A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Изобретение позвол ет интенсифицировать теплообмен. Спиральные ребра 3 внутренней трубы 1 теплообменника примыкают к внутренней поверхности наружной трубы 2 и имеют радиальные пазы 4. Глубина пазов 4 и ширина продольных полос 5, размещенных в них, равны ширине зазора между трубами 1, 2. Полосы выполнены с чере- дуюш,имис  по их длине с разных сторон пр моугольными прорез ми, смещенными в смежных полосах. Полосы с прорез ми обеспечивают поочередное перекрывание нижней и верхней частей спирального канала , что способствует обновлению сло  жидкости у поверхностей труб и интенсифицирует теплообмен. 2 ил.The invention allows to intensify heat exchange. The spiral ribs 3 of the inner tube 1 of the heat exchanger are adjacent to the inner surface of the outer tube 2 and have radial grooves 4. The depth of the grooves 4 and the width of the longitudinal strips 5 placed in them are equal to the width of the gap between the tubes 1, 2. The strips are made alternately along their length from different sides by rectangular slits offset in adjacent bands. The slit strips provide alternate overlapping of the lower and upper parts of the spiral channel, which contributes to the renewal of the fluid layer at the surfaces of the pipes and intensifies the heat exchange. 2 Il.

Description

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Изобретение относитс  к теплотехнике и может быть использовано в химическом машиностроении, энергетике и других област х техники.The invention relates to heat engineering and can be used in chemical engineering, energy and other areas of technology.

Цель изобретени  - интенсификаци  теплообмена.The purpose of the invention is to intensify heat transfer.

На фиг. 1 изображен теплообменник труба в трубе в сборе; на фиг. 2 - полоса, вставл ема  в радиальный паз.FIG. 1 shows the heat exchanger pipe in the pipe assembly; in fig. 2 is a strip inserted into a radial groove.

Теплообменник содержит внутреннюю 1 и наружную 2 трубы. Внутренн   труба 1 выполнена со спиральными ребрами 3, примыкающими к внутренней поверхности наружной трубы 2 и имеющими радиальные пазы 4, в которых размещены продольные полосы 5. Глубина пазов 4 и ширина полос 5 равна щирине зазора между трубами 1 и 2. Полосы 5 выполнены с чередующимис  по их длине с разных сторон пр моугольными прорез ми .6, имеющими ширину, равную щагу ребер 3, и смещены в смежных полосах 5. Число радиальных пазов 4 делают нечетным, что обеспечивает поочередное перекрывание нижней и верхней частей канала, образованного спиральными рёбрами.The heat exchanger contains inner 1 and outer 2 pipes. The inner tube 1 is made with spiral ribs 3 adjacent to the inner surface of the outer tube 2 and having radial grooves 4 in which the longitudinal strips 5 are placed. The depth of the grooves 4 and the width of the strips 5 are equal to the width of the gap between the tubes 1 and 2. The strips 5 are made with alternating along their lengths from different sides by rectangular slits .6 having a width equal to that of ribs 3 and displaced in adjacent strips 5. The number of radial grooves 4 is made odd, which ensures alternately overlapping the lower and upper parts of the channel formed by the helix ny edges.

Теплообменник работает следующим образом .The heat exchanger operates as follows.

Охлаждающий теплоноситель движетс  вдоль оси по внутренней трубе 1, омыва  наружную поверхность трубы 2. Охлаждаемый теплоноситель движетс  по спиральнымThe cooling coolant moves along the axis along the inner tube 1, washing the outer surface of the tube 2. The cooled coolant moves along a spiral

каналам, образованным боковыми поверхност ми спиральных ребер 3, наружной поверхностью трубы 1 и внутренней поверхностью трубы 2. Перемещение охлаждаемогоchannels formed by the side surfaces of the spiral ribs 3, the outer surface of the pipe 1 and the inner surface of the pipe 2. The movement of the cooled

теплоносител  по поперечному сечению теплообменника с турбулизацией потока и интенсификацией теплообмена достигаетс  наличием в верхней и нижней част х вставл емых в радиальные пазы 4 полос 5 с прорез ми 6, обеспечивающих поочередное перекрывание нижней и верхней частей спирального канала, что способствует обновлению сло  жидкости у поверхностей труб и интенсифицирует теплообмен.heat carrier across the cross section of the heat exchanger with flow turbulization and heat transfer intensification is achieved by the presence of strips 5 with slots 6 inserted into the radial grooves 4, which provide alternate overlapping of the lower and upper parts of the spiral channel, which contributes to the renewal of the fluid layer at the pipe surfaces and intensifies heat transfer.

1515

Claims (1)

Формула изобретени Invention Formula Теплообменник типа труба в трубе, внутренн   из которых выполнена со спиральными ребрами, примыкающими к внутреннейA heat exchanger of the type of pipe in a pipe, internally of which is made with spiral ribs adjacent to the internal поверхности наружной трубы и имеющими радиальные пазы, в которых размещены продольные полосы, отличающийс  тем, что, с целью интенсификации теплообмена, глубина пазов и ширина полос равна ширинеthe surface of the outer pipe and having radial grooves in which longitudinal strips are placed, characterized in that, in order to intensify heat exchange, the depth of the grooves and the width of the strips is equal to the width зазора между трубами, причем полосы выполнены с чередующимис  по их длине с разных сторон пр моугольными прорез ми, имеющими ширину, равную шагу ребер, и смещены в смежных полосах.the gap between the pipes, the strips being made with alternating along their length from different sides rectangular slots having a width equal to the step of the ribs, and shifted in the adjacent strips. сриг.2srig.2
SU864141323A 1986-10-28 1986-10-28 Double-pipe heat exchanger SU1416847A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU864141323A SU1416847A1 (en) 1986-10-28 1986-10-28 Double-pipe heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU864141323A SU1416847A1 (en) 1986-10-28 1986-10-28 Double-pipe heat exchanger

Publications (1)

Publication Number Publication Date
SU1416847A1 true SU1416847A1 (en) 1988-08-15

Family

ID=21265285

Family Applications (1)

Application Number Title Priority Date Filing Date
SU864141323A SU1416847A1 (en) 1986-10-28 1986-10-28 Double-pipe heat exchanger

Country Status (1)

Country Link
SU (1) SU1416847A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР № 985693, кл. F 28 D 7/10, 1981. Авторское свидетельство СССР № 1160225, кл. F 28 D 7/10, 1984. *

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