CN104165534B - Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes - Google Patents
Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes Download PDFInfo
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- CN104165534B CN104165534B CN201410421612.8A CN201410421612A CN104165534B CN 104165534 B CN104165534 B CN 104165534B CN 201410421612 A CN201410421612 A CN 201410421612A CN 104165534 B CN104165534 B CN 104165534B
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Abstract
The invention discloses a tubular heat exchanger with twisted strips in relaxation fit with protruding tubes. According to the tubular heat exchanger with the twisted strips in relaxation fit with the protruding tubes, the inner walls of the two ends of a shell are respectively provided with a tube plate, a thermal medium inlet pipe is arranged on the top of one end of the shell, a thermal medium outlet pipe is arranged on the bottom of the other end of the shell, horizontal partition boards are arranged in the shell, a cold medium inlet pipe is arranged on the top of one end of the shell, a cold medium outlet pipe is arranged on the bottom of the end of the shell, multiple baffle plates are arranged inside the shell in the pipe diameter direction and are installed on the inner wall of the shell in a vertically staggered mode, so that a vertically-staggered airflow channel is formed inside the shell from one end to the other end, multiple tube bundles are arranged in the shell in the axial direction, the two ends of each tube bundle are both fixed into tube plate holes in the tube plates, the tube bundles penetrate through the baffle plates and are supported by the baffle plates, and the tube bundles are formed by the protruding tubes in relaxation fit with the twisted strips. The tubular heat exchanger with the twisted strips in relaxation fit with the protruding tubes has the advantages that the heat exchange enhancement method achieved by enhancing surface roughness and the heat exchange enhancement method achieved by adopting far wall-surface flow disturbing elements are combined, and therefore the heat exchange effect is improved.
Description
Technical field
The invention belongs to heat power equipment technical field, it is related to the prominent pipe heat exchanger of lax cooperation twisted strip ball.
Background technology
Enhanced heat exchange technology is widely used in oil, chemical industry, electric power, metallurgy, ship, machinery, heating, food and refrigeration etc.
In field, typical application equipment includes heat exchanger, air-conditioning, chemical reaction equipment and refrigeration plant.Passive facilitation heat exchange is made
For one of important enhanced heat exchange technology, can effectively improve equipment heat transfer efficiency, reduce equipment size and reduce its one-tenth
This.The exploitation of high efficient heat exchanging element is the core technology of passive facilitation heat exchange, furthers investigate the inherent mechanism of its flowing and heat transfer
There is important practical significance with the Design and optimization of rule heat exchanging equipment.
From nineteen seventies so far, the development and application of heat transfer enhancement technology research is by the scholar of whole world country
It is placed on very important status.After entering the nineties, heat transfer enhancement technology enters and develops rapidly the stage, and it updates day
Crescent is different, and second generation heat transfer enhancement technology is considered as gradually a kind of routine techniques, and therefore each scholar sets about starting by the second generation
Technology develops to the third generation.Famous scholar Bergles is recently proposed a kind of up-to-date forth generation Combination Intensified Heat Transfer Technology
Concept, will two kinds or several enhanced heat exchange means simultaneously using so that heat transfer effect is better than the strengthening under single means effect
Heat transfer effect.
So far, adopt single enhanced heat exchange means traditional high-performance heat exchanger more.One is strong using rough surface
Change heat exchanger tube, take off vortex by improving wall surface shape design forming, reach destruction boundary layer, improve border in the layer conductivity of heat
The purpose of energy, such as transversally flute tube, spiral grooved tube, cannelure pipe, bellows, positive coil and finned tube etc..Two is using remote wall
Face turbulent element, creates and is continuously vortexed, and makes the fluid of tube hub and wall boundary layer under the influence of the centrifugal force
Fluid is sufficiently mixed.The applicant, once in Chinese patent CN103411454A, discloses a kind of raised type bellows tube dislocation cloth
The pipe heat exchanger put, by increasing raised type node structure in tube bank wall surface, with strengthening surface base heat transfer effect, but this
Plant single its heat transfer effect of strengthening means still undesirable.On this basis, the utility model patent adopts forth generation to be combined
Enhanced heat exchange technology, on the basis of strengthening surface base heat exchange, strengthening fluid base heat transfer effect simultaneously, reach compound cooperative reinforcing
The effect of heat exchange.
Content of the invention
The pipe heat exchanger it is an object of the invention to provide lax cooperation twisted strip ball is dashed forward, solves and adopts existing heat exchanger more
With the undesirable problem of single enhanced heat exchange means, heat transfer effect.
The technical solution adopted in the present invention is including tube-like envelope, cold medium inlet tube, cold medium outlet, thermal medium
Inlet tube, thermal medium outlet pipe, two tube sheets, the first end socket, the second end socket, horizontal baffle, multiple deflection plate and tube bank；Its
In, the two ends inwall of shell is respectively provided with a tube sheet, shell wherein one end open portion is provided with the first end socket, shell another
One end open portion is provided with the second end socket, and the both ends open of shell is closed by the first end socket and the second end socket, one end top of shell
Portion is provided with thermal medium inlet pipe, and the other end bottom of shell is provided with thermal medium outlet pipe, is provided with level in the first end socket
Dividing plate, the first end socket inner space is divided into upper and lower identical two parts, and the top of the first end socket is provided with cold medium import
Pipe, the bottom of the first end socket is provided with cold medium outlet, and the inside of shell is provided with multiple deflection plates, baffling along caliber direction
Plate is staggered installation of up and down on outer casing inner wall, makes enclosure form the gas channel interlocking up and down from one end to the other end, outward
Axially disposed multiple tube banks in shell, the two ends of tube bank are each attached to the tube sheet in the hole of tube sheet, and tube bank through deflection plate and is rolled over
Stream plate is supported, and restraining dashes forward for lax cooperation twisted strip ball restrains.
Further, the dash forward tube bank internal diameter D of tube bank of described lax cooperation twisted strip ball is 20mm, and ball pipe of dashing forward combines lax cooperation and turns round
Band has more a ball lug structure compared to light pipe with reference to interpolation twisted strip on wall, and ball thumping is 50mm away from p, dash forward deep be 0.5～
2mm, it is lax cooperation that ball is dashed forward between pipe and twisted strip, turns round the internal diameter that wide w is less than pipe, a width of 16～18mm of knob of preferably tie.
Further, described ball dash forward prominent include 3 kinds of arrangements away from the matched design with lax cooperation twisted strip, dash forward away from less than torsion
Away from, dash forward away from equal to torque and prominent away from more than torque.
The invention has the beneficial effects as follows combining rough surface strengthening and adopting remote two kinds of enhanced heat exchanges of wall turbulent element
Mode, in view of surface base is different with the zone of action of fluid base enhancements, it is to avoid the configuration conflict of thermoexcell and
It coexists and can be formed with joint efforts so that the heat transfer effect of the prominent pipe heat exchanger of lax cooperation twisted strip ball is strengthened further.
Brief description
Fig. 1 is shell-and-tube heat exchanger structural representation of the present invention；
Fig. 2 is the present invention lax cooperation twisted strip structural representation；
Fig. 3 is present invention tube bank arrangement longitudinal section view；
Fig. 4 is the embodiment of the present invention 1 tie arrangement schematic diagram；
Fig. 5 is the embodiment of the present invention 2 tie arrangement schematic diagram；
Fig. 6 is the embodiment of the present invention 3 tie arrangement schematic diagram.
In figure, 1. tube-like envelope, 2. cold medium inlet tube, 3. cold medium outlet, 4. thermal medium inlet pipe, 5. thermal medium
Outlet, 6. tube sheet, 7. the first end socket, 8. deflection plate, 9. restrain, 10. the second end socket, 11. horizontal baffles.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
It is shell-and-tube heat exchanger structural representation of the present invention as shown in Figure 1, the present invention includes tube-like envelope 1, cold medium is entered
Mouth pipe 2, cold medium outlet 3, thermal medium inlet pipe 4,5, two tube sheets 6 of thermal medium outlet pipe, the first end socket 7, the second end socket
10th, horizontal baffle 11, multiple deflection plate 8 and tube bank 9；Wherein, the two ends inwall of shell 1 is respectively provided with a tube sheet 6, shell
1 wherein one end open portion is provided with the first end socket 7, and the other end opening portion of shell 1 is provided with the second end socket 10, the first end socket 7
With the second end socket 10, the both ends open of shell 1 is closed, one end top of shell 1 is provided with thermal medium inlet pipe 4, shell 1
Other end bottom is provided with thermal medium outlet pipe 5, is provided with horizontal baffle 11 in the first end socket 7, by the first end socket 7 inner space
It is divided into upper and lower identical two parts, the top of the first end socket 7 is provided with cold medium inlet tube 2, the bottom setting of the first end socket 7
There is cold medium outlet 3, the inside of shell 1 is provided with multiple deflection plates 8 along caliber direction, and deflection plate is staggered installation of about 8
On shell 1 inwall, shell 1 is made to be internally formed the gas channel interlocking up and down from one end to the other end, axially disposed in shell 1
Multiple tube banks 9, the two ends of tube bank 9 are each attached to the tube sheet in the hole of tube sheet 6, and tube bank 9 passes through deflection plate 8 and propped up by deflection plate 8
Support, tube bank 9 is the prominent tube bank of lax cooperation twisted strip ball.
The present invention mainly takes enhancements to traditional shell-and-tube heat exchanger, with a kind of prominent pipe of cooperation twisted strip ball that relaxes
Formula heat exchanger replaces traditional light pipe, and the prominent tubular construction parameter of cooperation twisted strip ball that relaxes is more complicated, includes the interior of pipe as shown in Figure 2
Footpath D, 180 ° of torque y of interpolation twisted strip, ball is dashed forward, and pipe combination is lax to coordinate twisted strip to combine interpolation twisted strip on wall compared to light pipe
Have more a ball lug structure, structural parameters include crest radius R, prominent depth H, ball thumping away from p.It is lax that ball is dashed forward between pipe and twisted strip
Cooperation, turns round the internal diameter that wide w is less than pipe, therefore has clearance rate C=(D-w)/D.Fig. 3 is present invention tube bank arrangement radial section
Figure.Including tube pitch (tp), corrugation pitch (wp).
The present invention designs a kind of prominent tubular construction of lax cooperation twisted strip ball, phase interworking between ball lug structure and twisted tape inserts
Close, the arc radius R that ball is dashed forward takes 5～20mm in processing allowed band.What ball was dashed forward prominent sets away from the coupling with lax cooperation twisted strip
Meter includes 3 kinds of arrangements, dashes forward away from less than torque, dashes forward away from equal to torque and dash forward away from more than torque.Prominent is 0.5～2mm deeply, deep meeting of dashing forward
Distance between impact projection, the heat transfer property on shell-side and resistance performance impact are larger.The material of twisted strip and pipeline can basis
Different heat-exchanging states chooses stainless steel, carbon steel and steel alloy.
The present invention uses the theory of surface base and fluid base cooperative reinforcing, devises a kind of prominent tubular type of lax cooperation twisted strip ball
Heat exchanger.Due to the throttle effect of shell side, the shell-side enhancement techniques heat transfer effect of outer expanding bellows tube apparently higher than tube side, turn round by pipe interpolation
The introducing of band strengthens the reinforcing heat exchange capability of tube side further, can achieve the effect of bilateral simultaneously efficient enhanced heat exchange, therefore special
It is not applied to tube side and shell-side needs gas-gas (vapour) heat-exchanging state of efficiently strengthening simultaneously.
One kind of the present invention efficiently relaxes and coordinates the prominent pipe heat exchanger of twisted strip ball, is acted synergistically with fluid base using surface base
Under compound strengthened processing technology, substantially increase complex heat transfer efficiency.And, relax the prominent pipe heat exchanger energy of cooperation twisted strip ball
Enough property performance period mixing and material-saving while separation, reduce manufacturing cost.And, the lax cooperation twisted strip ball of the present invention
Prominent pipe heat exchanger, compared with traditional gap twisted strip pipe, has installed vortex generators additional on extended surface, can lose compared with rill
So as to enhanced heat exchange effect can be obviously improved in wider reynolds number range under conditions of dynamic resistance amplification.In addition, can be real
The bilateral enhanced heat exchange of existing tube side and shell-side, it is adaptable to gas-gas (vapour) heat exchange, increased the scope of application of medium.This efficiently changes
The cyclonic effect of heat pipe makes it have having great advantage in terms of good antiscale property, and the exploitation of this efficient heat-exchanging pipe can directly be applied
In the improvement and design of old shell-and-tube heat exchanger, traditional heat exchanger tube is replaced and reaches the high efficiency of heat exchanger.
The dash forward complex heat transfer effectiveness formula of pipe heat exchanger of the lax cooperation twisted strip ball of the present invention is：
η=(Nu Nus -1)·(f·fs -1)-1/3；
Wherein, Nu=α D ν-1- nusselt number.α-convection transfer rate；The qualitative size of D-；ν-motion is glued
Degree.F=Δ p (L D-1)-1·(0.5·ρ·Ub 2)-1- coefficient of frictional resistance.The Δ p- pressure loss；L- pipe range；ρ-close
Degree；Ub- mean flow rate.Subscript：S- light pipe.
Specific embodiment is set forth below, and the present invention will be described：
Specific embodiments one：Described in (with reference to Fig. 4) the present embodiment is the several of the prominent pipe of built-in lax cooperation twisted strip ball
What model.The internal diameter D of pipe is 20mm, dashes forward away from for 50mm.180 ° of torque y=50mm of interpolation twisted strip, turn round wide w=18mm.Ball is dashed forward
Pipe on wall has more ball lug structure compared to light pipe with reference to interpolation twisted strip with reference to interpolation twisted strip, depth of dashing forward H=1mm, this embodiment party
Case tube wall and clearance rate C=0.1 of twisted strip.
Specific embodiments two：The difference from embodiment one for (with reference to Fig. 5) the present embodiment is to turn round wide w=
16mm, clearance rate C=0.2, other structures are identical with embodiment one.
Specific embodiments three：The difference from embodiment one for (with reference to Fig. 6) the present embodiment is to turn round wide w=
14mm, clearance rate C=0.3, other structures are identical with embodiment one.
Advantages of the present invention has：
(1) the built-in lax cooperation twisted strip ball of the present invention dashes forward pipe heat exchanger using under surface base and fluid base synergy
Compound strengthened processing technology, the classical enhanced heat exchange destroying in conjunction with thermal boundary layer theoretical so that itself and traditional rough surface
Or internal flow-disturbing independent role is compared has more preferable heat transfer property.
(2) the built-in lax of the present invention coordinates the prominent pipe heat exchanger of twisted strip ball compared to tight fit twisted strip due to clearance rate
Presence, greatly can reducing flow resistance, thus significantly improving complex heat transfer efficiency eta, but can sacrifice few accordingly
The heat exchange efficiency of amount.
(3) the prominent pipe heat exchanger of built-in lax cooperation twisted strip ball of the present invention can significantly improve heat transfer under any fluidised form
Performance.Gap between built-in lax cooperation twisted strip and the prominent pipe of ball and the prominent pipe inner groovy of ball cooperate, by way of drainage
Make fluid can produce Secondary Flow under any fluid, and existing enhanced heat exchange means can only realize strong under turbulence state
Change heat transfer effect.
(4) the prominent pipe heat exchanger of built-in lax cooperation twisted strip ball of the present invention has effect, twisted strip and the ball of obvious decontamination
Gap between prominent pipe makes fluid concentrate near wall to be washed away, be more readily formed Secondary Flow near wall, for adherent
The formation of dirt is inhibited, and can remove the dirt having been formed.
The above is only the better embodiment to the present invention, and not the present invention is made with any pro forma limit
System, any simple modification, equivalent variations and modification that every technical spirit according to the present invention is made to embodiment of above, all
Belong in the range of technical solution of the present invention.
Claims (2)
1. relax the prominent pipe heat exchanger of cooperation twisted strip ball, including tube-like envelope (1), cold medium inlet tube (2), cold medium outlet
(3), thermal medium inlet pipe (4), thermal medium outlet pipe (5), two tube sheets (6), the first end socket (7), the second end socket (10), levels
Dividing plate (11), multiple deflection plate (8) and tube bank (9)；Wherein, the two ends inwall of shell (1) is respectively provided with a tube sheet (6),
Shell (1) wherein one end open portion is provided with the first end socket (7), and the other end opening portion of shell (1) is provided with the second end socket
(10), the both ends open of shell (1) is closed by the first end socket (7) and the second end socket (10), and one end top of shell (1) is provided with
Thermal medium inlet pipe (4), the other end bottom of shell (1) is provided with thermal medium outlet pipe (5), and the first end socket is provided with (7)
Horizontal baffle (11), the first end socket (7) inner space is divided into upper and lower identical two parts, and the top of the first end socket (7) sets
It is equipped with cold medium inlet tube (2), the bottom of the first end socket (7) is provided with cold medium outlet (3), and the inside of shell (1) is along pipe
Footpath direction is provided with multiple deflection plates (8), and deflection plate (8) is staggered installation of up and down on shell (1) inwall, makes shell (1) internal
Form the gas channel interlocking up and down from one end to the other end, axially disposed multiple tube banks (9) in shell (1), restrain (9)
Two ends are each attached to the tube sheet in the hole of tube sheet (6), and tube bank (9) passes through deflection plate (8) and supported by deflection plate (8), its feature
It is, described tube bank (9) is some cooperation twisted strip balls prominent pipes compositions that relax, and the wall of the prominent pipe of described ball is with ball teat, ball
The internal diameter of prominent pipe is 20mm, and ball thumping is 0.5～2mm away from for 50mm, dashing forward deep, and it is lax joining that ball is dashed forward between pipe and interpolation twisted strip
Close, turn round the internal diameter of wide pipe of dashing forward less than ball, a width of 14～18mm of described torsion.
2. according to cooperation twisted strip ball lax described in claim 1 dash forward pipe heat exchanger it is characterised in that：Described ball thumping away from and pine
The matched design of cooperation twisted strip of relaxing includes 3 kinds of arrangements, dashes forward away from less than torque, dash forward away from equal to torque or prominent away from more than torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410421612.8A CN104165534B (en) | 2014-08-25 | 2014-08-25 | Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410421612.8A CN104165534B (en) | 2014-08-25 | 2014-08-25 | Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165534A CN104165534A (en) | 2014-11-26 |
| CN104165534B true CN104165534B (en) | 2017-02-08 |
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| CN201410421612.8A Active CN104165534B (en) | 2014-08-25 | 2014-08-25 | Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833243A (en) * | 2015-05-08 | 2015-08-12 | 杭州佰强能源科技有限公司 | Plastic heat exchanger for recovering waste heat of low-temperature smoke |
| CN104990432A (en) * | 2015-07-31 | 2015-10-21 | 四川金锋建设有限公司 | Application method of heat exchanger tube bundle |
| DE102015013516B4 (en) | 2015-10-20 | 2018-01-18 | Frank Brucker | Shell-and-tube heat exchanger and manufacturing process for shell-and-tube heat exchangers |
| CN109506500A (en) * | 2018-11-21 | 2019-03-22 | 浙江英科新能源有限公司 | A kind of shell-and-tube heat-exchange device |
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| GB347904A (en) * | 1930-05-17 | 1931-05-07 | Vilhelm Mickelsen | Improvements in heat interchangers for fluids |
| JPH1183352A (en) * | 1997-09-05 | 1999-03-26 | Sanou Kogyo Kk | Heat exchanger |
| CN1920468A (en) * | 2006-09-11 | 2007-02-28 | 华南理工大学 | Vertical multiple-spiral blended flow shell-and-tube heat exchanger and method for strengthening heat transfer |
| CN202002517U (en) * | 2010-12-15 | 2011-10-05 | 广东中科天元新能源科技有限公司 | Anti-blocking shell-and-tube heat exchanger with multiple tube bundles |
| CN202470827U (en) * | 2011-12-21 | 2012-10-03 | 洛阳双瑞特种装备有限公司 | Helical baffle plate shell-and-tube heat exchanger |
| CN202692763U (en) * | 2012-05-04 | 2013-01-23 | 南京航空航天大学 | Multi-shell-pass shell-and-tube heat exchanger |
| CN203240946U (en) * | 2013-04-12 | 2013-10-16 | 中国石油大学(华东) | Arced baffle heat exchanger |
| CN103411454A (en) * | 2013-08-29 | 2013-11-27 | 哈尔滨工业大学 | Tube type heat exchanger with outer-protruding-type corrugated tubes arranged in staggering mode |
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2014
- 2014-08-25 CN CN201410421612.8A patent/CN104165534B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB347904A (en) * | 1930-05-17 | 1931-05-07 | Vilhelm Mickelsen | Improvements in heat interchangers for fluids |
| JPH1183352A (en) * | 1997-09-05 | 1999-03-26 | Sanou Kogyo Kk | Heat exchanger |
| CN1920468A (en) * | 2006-09-11 | 2007-02-28 | 华南理工大学 | Vertical multiple-spiral blended flow shell-and-tube heat exchanger and method for strengthening heat transfer |
| CN202002517U (en) * | 2010-12-15 | 2011-10-05 | 广东中科天元新能源科技有限公司 | Anti-blocking shell-and-tube heat exchanger with multiple tube bundles |
| CN202470827U (en) * | 2011-12-21 | 2012-10-03 | 洛阳双瑞特种装备有限公司 | Helical baffle plate shell-and-tube heat exchanger |
| CN202692763U (en) * | 2012-05-04 | 2013-01-23 | 南京航空航天大学 | Multi-shell-pass shell-and-tube heat exchanger |
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| CN103411454A (en) * | 2013-08-29 | 2013-11-27 | 哈尔滨工业大学 | Tube type heat exchanger with outer-protruding-type corrugated tubes arranged in staggering mode |
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