CN101476826A - Pulsating flow intensified heat transmission heat exchanger - Google Patents

Pulsating flow intensified heat transmission heat exchanger Download PDF

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Publication number
CN101476826A
CN101476826A CNA2009100606152A CN200910060615A CN101476826A CN 101476826 A CN101476826 A CN 101476826A CN A2009100606152 A CNA2009100606152 A CN A2009100606152A CN 200910060615 A CN200910060615 A CN 200910060615A CN 101476826 A CN101476826 A CN 101476826A
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China
Prior art keywords
heat exchanger
tube
pulsating flow
heat
exciting vibration
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Granted
Application number
CNA2009100606152A
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Chinese (zh)
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CN101476826B (en
Inventor
杨侠
徐建民
喻九阳
王成刚
郑贤中
吴艳阳
马季红
罗燕
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Wuhan Institute of Technology
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Wuhan Institute of Technology
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Publication of CN101476826A publication Critical patent/CN101476826A/en
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Publication of CN101476826B publication Critical patent/CN101476826B/en
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    • 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
    • F28D7/16—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 in parallel spaced relation
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/10—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by imparting a pulsating motion to the flow, e.g. by sonic vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G7/00—Cleaning by vibration or pressure waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

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

Abstract

The invention relates to a shell and tube heat exchanger, in particular to a pulsating flow enhanced heat transfer heat exchanger which utilizes pulsating flow generators to produce pressure pulsating flow to enhance the heat transfer. The heat exchanger comprises a shell, an upper end enclosure, a lower end enclosure, a tube plate, and a heat exchange tube, wherein both ends of the shell are connected with the upper end enclosure and the lower end enclosure through the tube plate respectively; and the upper end and the lower end of the heat exchange tube are fixed on the tube plate respectively. The heat exchanger is characterized in that a shell side inlet arranged on the shell is connected with an outlet of one pulsating flow generator, and a tube side inlet arranged on the end enclosure is connected with the outlet of the other pulsating flow generator. The heat exchanger has the advantages that: good heat transfer, scale inhibition, and scale removal effects of the heat exchanger can be realized by the improvement with simple structural forms such as connecting the two pulsating flow generators through pipeline joints on an ordinary shell and tube heat exchanger and suspending an exciting vibration spring in the heat exchange tube, and the like; and the heat exchanger has a simple structure, and is easy to realize.

Description

Pulsating flow intensified heat transmission heat exchanger
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger, concrete a kind of pulsating flow generator that utilizes that relates to produces the pulsating flow intensified heat transmission heat exchanger of pressure fluctuation stream with augmentation of heat transfer.
Background technology
In the industrial production, all kinds of heat exchangers are widely used and carry out heat exchange at present, wherein use the most general with shell-and-tube heat exchanger.In order to improve the coefficient of heat transfer of heat exchanger, scientific workers from surface texture strengthen, the insert disturbance is strengthened, many aspects such as vibrating enhanced, electric field-enhanced have been launched research, this type of reinforcement is most widely used with structure-reinforced technology at present, insert is strengthened mainly to insert the silk ribbon disturbance, fluid flows based on constant voltage stream (being commonly called as advection), the research that how to utilize fluid pressure clocklike to pulse to strengthen heat-transfer effect is also few, does not also see to propose concrete effectively version.
Summary of the invention
Problem to be solved by this invention is to propose a kind of pulsating flow intensified heat transmission heat exchanger at above-mentioned prior art, and it can effectively utilize the flowing pressure pulsatile change and strengthen disturbance with augmentation of heat transfer, has the effect of disturbance scale removal simultaneously.
The present invention is adopted solution to be by the problem of the above-mentioned proposition of solution: pulsating flow intensified heat transmission heat exchanger, include housing, go up low head, tube sheet and heat exchanger tube, the two ends of described housing are connected with last low head via tube sheet respectively, the two ends up and down of heat exchanger tube are separately fixed on the tube sheet, the shell side inlet that it is characterized in that being arranged on the housing is connected with a pulsating flow generator outlet, and the tube side inlet that is arranged on the end socket then links to each other with another pulsating flow generator outlet.
Press such scheme, described heat exchanger tube is oval heat exchange tube, be mounted with spring suspension on the oval heat exchange tube water inlet end face, exciting vibration spring one end is suspended on the spring suspension, and the exciting vibration spring other end belongs to free end and is placed near the delivery port of oval heat exchange tube.
Press such scheme, described heat exchanger tube is the bellows tube heat exchanger tube, be mounted with spring suspension respectively on bellows tube heat exchanger tube water inlet end face and the delivery port end face, the two ends of nodal type exciting vibration spring then are suspended on respectively on two spring suspensions, and the wave pitch of nodal type exciting vibration spring equals the wave pitch of bellows tube heat exchanger tube.
Press such scheme, the pulsation flowing pressure ripple frequency that the resonant frequency of described exciting vibration spring and pulsating flow generator are produced is consistent or reach unanimity.
Press such scheme, the pulsation flowing pressure ripple frequency that the resonant frequency of described nodal type exciting vibration spring and pulsating flow generator are produced is consistent or reach unanimity.
Operation principle of the present invention is: for shell side, the pulsating flow generator output pressure pulsation stream of shell side porch, after flowing directly in the shell side, the pulsatile change of fluid pressure must cause fluid turbulent enhancing in the shell side, strengthened thereby making conducts heat, the pulsatile change of fluid pressure produces denudation for the dirt layer of inner walls face simultaneously, reaches the effect of scale suppression and scale removal; For tube side, after the pulsating flow generator output pressure pulsation of tube side porch is flowed through and is flowed in each heat exchanger tube by end socket, the pulsatile change of fluid pressure directly causes fluid turbulent enhancing in the tube side on the one hand, reach augmentation of heat transfer, scale suppression and scale removal purpose, on the other hand, for the heat exchanger tube that exciting vibration spring or nodal type exciting vibration spring have been installed, the pulsation of fluid pressure also can be induced spring that resonance takes place or is tending towards resonance, the vibration of spring acts on the turbulization degree that tube side fluid forms secondary disturbance can further enhancing fluid in the tube side, heat exchange is further strengthened, and scale removal and scale suppression effect will be more obvious.
Major advantage of the present invention is:
On the common tube shell heat exchanger, insert two pulsating flow generators, in heat exchanger tube, hang the improvement of simple structure forms such as exciting vibration spring by pipe joint, can realize good augmentation of heat transfer, scale suppression, the descale effect of heat exchanger, simple in structure, be easy to realize.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation that adds the pulsating flow intensified heat transmission heat exchanger of exciting vibration spring.
Fig. 3 be among Fig. 2 heat exchanger tube A to zoomed-in view.
Fig. 4 is the structural representation that adds the pulsating flow intensified heat transmission heat exchanger of nodal type exciting vibration spring.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
In Fig. 1, pulsating flow intensified heat transmission heat exchanger mainly is made up of housing 5, last low head (6,12), tube sheet 8, heat exchanger tube 3, pulsating flow generator (1,11) etc., the two ends of its middle shell 5 are connected with last low head (6,12) via tube sheet 8 respectively, the two ends up and down of heat exchanger tube are separately fixed on the tube sheet, the shell side inlet 2 that is arranged on the housing is connected with 1 outlet of a pulsating flow generator, is arranged on 7 of tube side inlets on the end socket 6 and exports with another pulsating flow generator 11 and link to each other.Constant voltage shell-side fluid, the tube side fluid of carrying by pump at first enter pulsating flow generator separately, shown in the direction of arrow among the figure, are converted to pressure fluctuation stream back and flow out, and flow to shell side inlet 2, tube side inlet 7 more respectively.The heat exchanger tube 3 of pulsating flow intensified heat transmission heat exchanger adopts common oval form of tubes generally speaking.
The pulsation stream augmentation of heat transfer effect that is produced in order to bring into play pulsating flow generator better, as shown in Fig. 2-3, in oval heat exchange tube 3, install exciting vibration spring 4 additional, concrete installation method is, settle a spring suspension 13 on the oval heat exchange tube 3 water inlet end faces, exciting vibration spring 4 one ends are suspended on the spring suspension, exciting vibration spring 4 other ends belong to free end and are placed near the delivery port of heat exchanger tube 3, the pulsation flowing pressure ripple frequency that the resonant frequency of exciting vibration spring 4 and pulsating flow generator 11 are produced is consistent or reaches unanimity, in the hope of making exciting vibration spring 4 reach good resonance effect, thereby obtain better disturbance augmentation of heat transfer and scale removal purpose.
As shown in Figure 4, the heat exchanger tube of pulsating flow intensified heat transmission heat exchanger also can adopt bellows tube heat exchanger tube 3, nodal type exciting vibration spring 4 is installed in bellows tube heat exchanger tube 3 simultaneously, and the wave pitch of nodal type exciting vibration spring 4 equals the wave pitch of bellows tube heat exchanger tube 3, the concrete installation method of nodal type exciting vibration spring 4 is, settle spring suspension respectively on bellows tube heat exchanger tube 3 water inlet end faces and the delivery port end face, exciting vibration spring 4 two ends then are suspended on two spring suspensions respectively, and the node position that keeps the just in time corresponding bellows tube heat exchanger tube 3 in node position of nodal type exciting vibration spring 4, the pulsation flowing pressure ripple frequency that the resonant frequency of nodal type exciting vibration spring 4 and pulsating flow generator 11 are produced is consistent or reaches unanimity, in the hope of making nodal type exciting vibration spring 4 reach good resonance effect, thereby obtain better disturbance augmentation of heat transfer and scale removal purpose.
Shell-side fluid at first enters pulsating flow generator 1, is converted to pressure fluctuation stream back and flows out, and flows to then to be flowed out by shell side outlet 9 after shell side inlet 2 enters housing; The fluid of tube side is introduced into pulsating flow generator 11, be converted to pressure fluctuation stream back and flow out, flow to tube side inlet 7 then and enter in the end socket 6, in end socket 6, enter heat exchanger tube 3 after, from heat exchanger tube 3, flow out to again in the end socket 12 of the other end, flow out by tube side outlet 10 at last; Arrow indicates direction among direction that fluid flows in tube side and the shell side such as the figure.

Claims (5)

1, pulsating flow intensified heat transmission heat exchanger, include housing (5), go up low head (6,12), tube sheet (8) and heat exchanger tube (3), the two ends of described housing are connected with last low head via tube sheet respectively, the two ends up and down of heat exchanger tube are separately fixed on the tube sheet, the shell side inlet that it is characterized in that being arranged on the housing is connected with a pulsating flow generator (1) outlet, and the tube side inlet that is arranged on the end socket then links to each other with another pulsating flow generator (11) outlet.
2, by the described pulsating flow intensified heat transmission heat exchanger of claim 1, it is characterized in that described heat exchanger tube is oval heat exchange tube, be mounted with spring suspension (13) on the oval heat exchange tube water inlet end face, exciting vibration spring (4) one ends are suspended on the spring suspension, and the exciting vibration spring other end belongs to free end and is placed near the delivery port of oval heat exchange tube.
3, by the described pulsating flow intensified heat transmission heat exchanger of claim 1, it is characterized in that described heat exchanger tube is the bellows tube heat exchanger tube, be mounted with spring suspension respectively on bellows tube heat exchanger tube water inlet end face and the delivery port end face, the two ends of nodal type exciting vibration spring then are suspended on respectively on two spring suspensions, and the wave pitch of nodal type exciting vibration spring equals the wave pitch of bellows tube heat exchanger tube.
4, by the described pulsating flow intensified heat transmission heat exchanger of claim 2, the pulsation flowing pressure ripple frequency that the resonant frequency that it is characterized in that described exciting vibration spring and pulsating flow generator are produced is consistent or reach unanimity.
5, by the described pulsating flow intensified heat transmission heat exchanger of claim 3, the pulsation flowing pressure ripple frequency that the resonant frequency that it is characterized in that described nodal type exciting vibration spring and pulsating flow generator are produced is consistent or reach unanimity.
CN2009100606152A 2009-01-21 2009-01-21 Pulsating flow intensified heat transmission heat exchanger Expired - Fee Related CN101476826B (en)

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CN101476826B CN101476826B (en) 2010-12-29

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101738129B (en) * 2009-12-10 2012-07-04 山东大学 Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger
CN102679799A (en) * 2012-05-11 2012-09-19 武汉工程大学 Plug type pulsating flow generator
CN103453752A (en) * 2013-08-30 2013-12-18 武汉工程大学 Low-energy-consumption lignite drying process for recovering lignite moisture and drying equipment
CN103492828A (en) * 2011-04-01 2014-01-01 三菱电机株式会社 Hot water supply device and flow volumen control method
CN106123629A (en) * 2016-06-29 2016-11-16 胡振强 Source pump heat exchanger
CN107941076A (en) * 2017-11-10 2018-04-20 武汉工程大学 A kind of high-performance heat exchanger system and its heat-exchange method
CN108826725A (en) * 2018-08-06 2018-11-16 珠海格力电器股份有限公司 Refrigeration unit
CN111121496A (en) * 2019-12-12 2020-05-08 燕山大学 Vortex quantity reinforced nano fluid heat exchanger under pulsating flow field
CN111238265A (en) * 2019-12-13 2020-06-05 山东大学 Water-cooling plate heat exchanger with pulsating vibration
US10677541B2 (en) 2015-12-15 2020-06-09 Technion Research & Development Foundation Limited Acoustic resonance excited heat exchange
EP4249842A1 (en) * 2021-12-07 2023-09-27 Kamwest Solutions Oy Ab System for cleaning of heat-transfer surfaces
CN117404938A (en) * 2023-11-27 2024-01-16 燕山大学 Wave-shaped plate heat exchanger with synergistic effect of ultrasound and pulsation and control method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201429364Y (en) * 2009-01-21 2010-03-24 武汉工程大学 Pulsating flow heat transfer enhancing heat exchanger

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101738129B (en) * 2009-12-10 2012-07-04 山东大学 Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger
CN103492828A (en) * 2011-04-01 2014-01-01 三菱电机株式会社 Hot water supply device and flow volumen control method
CN103492828B (en) * 2011-04-01 2016-01-20 三菱电机株式会社 Water heater and flow control methods
CN102679799A (en) * 2012-05-11 2012-09-19 武汉工程大学 Plug type pulsating flow generator
CN102679799B (en) * 2012-05-11 2013-09-18 武汉工程大学 Plug type pulsating flow generator
CN103453752A (en) * 2013-08-30 2013-12-18 武汉工程大学 Low-energy-consumption lignite drying process for recovering lignite moisture and drying equipment
CN103453752B (en) * 2013-08-30 2015-10-28 武汉工程大学 A kind of low energy consumption brown coal drying technique and equipment thereof reclaiming brown coal moisture
US10677541B2 (en) 2015-12-15 2020-06-09 Technion Research & Development Foundation Limited Acoustic resonance excited heat exchange
US11385001B2 (en) 2015-12-15 2022-07-12 Technion Research & Development Foundation Ltd. Acoustic resonance excited heat exchange
CN106123629A (en) * 2016-06-29 2016-11-16 胡振强 Source pump heat exchanger
CN106123629B (en) * 2016-06-29 2018-11-06 山东圣克莱尔新能源有限公司 Heat pump unit heat exchanger
CN107941076A (en) * 2017-11-10 2018-04-20 武汉工程大学 A kind of high-performance heat exchanger system and its heat-exchange method
CN108826725A (en) * 2018-08-06 2018-11-16 珠海格力电器股份有限公司 Refrigeration unit
CN111121496A (en) * 2019-12-12 2020-05-08 燕山大学 Vortex quantity reinforced nano fluid heat exchanger under pulsating flow field
CN111238265A (en) * 2019-12-13 2020-06-05 山东大学 Water-cooling plate heat exchanger with pulsating vibration
CN111238265B (en) * 2019-12-13 2020-11-10 山东大学 Water-cooling plate heat exchanger with pulsating vibration
EP4249842A1 (en) * 2021-12-07 2023-09-27 Kamwest Solutions Oy Ab System for cleaning of heat-transfer surfaces
CN117404938A (en) * 2023-11-27 2024-01-16 燕山大学 Wave-shaped plate heat exchanger with synergistic effect of ultrasound and pulsation and control method thereof

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