CN104180691A - Tubular heat exchanger with regular gap twisted strips and ball protrusions - Google Patents

Tubular heat exchanger with regular gap twisted strips and ball protrusions Download PDF

Info

Publication number
CN104180691A
CN104180691A CN201410421489.XA CN201410421489A CN104180691A CN 104180691 A CN104180691 A CN 104180691A CN 201410421489 A CN201410421489 A CN 201410421489A CN 104180691 A CN104180691 A CN 104180691A
Authority
CN
China
Prior art keywords
prominent
gap
tube
ball
twisted strip
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201410421489.XA
Other languages
Chinese (zh)
Inventor
韩怀志
杨龙滨
李彦军
孙宝芝
宋思明
张国磊
李晓明
张鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Engineering University
Original Assignee
Harbin Engineering University
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 Harbin Engineering University filed Critical Harbin Engineering University
Priority to CN201410421489.XA priority Critical patent/CN104180691A/en
Publication of CN104180691A publication Critical patent/CN104180691A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a tubular heat exchanger with regular gap twisted strips and ball protrusions. Two tube plates are mounted on the inner walls of two ends of a housing. A heat medium inlet tube is disposed at the top of one end of the housing. A heat medium outlet tube is disposed at the bottom of the other end of the housing. A horizontal partition is disposed inside the housing. A cold medium inlet tube is disposed at the top of one end of the housing; a cold medium outlet tube is disposed at the bottom of one end of the housing. A plurality of baffle plates are disposed inside the housing in the tube diameter direction. The baffle plates are mounted on the inner wall of the housing in a vertically staggered manner, so that an air passage with one end vertically staggered to the other end is formed in the housing; a plurality of tube bundles are axially disposed inside the housing; both ends of each tube bundle are fixed in tube plate orifices of the tube plates; the tube bundles penetrate the baffle plates and are supported by the baffle plates; the tube bundles are provided with regular gap twisted strips and ball protrusions. The tubular heat exchanger has the advantages that two enhanced heat transfer ways, namely rough surface enhancement and far wall disturbing elements, are combined, and heat transfer effect is enhanced.

Description

The regular gap twisted strip ball pipe heat exchanger of dashing forward
Technical field
The invention belongs to heat power equipment technical field, relate to the prominent pipe heat exchanger of regular gap twisted strip ball.
Background technology
Enhanced heat exchange technology is widely used in the fields such as oil, chemical industry, electric power, metallurgy, boats and ships, machinery, heating, food and refrigeration, and typical application equipment comprises heat exchanger, air-conditioning, chemical reaction equipment and refrigeration plant.Passive facilitation heat exchange, as one of important enhanced heat exchange technology, can effectively improve equipment heat transfer efficiency, reduces equipment size and reduce its cost.The exploitation of high efficient heat exchanging element is the core technology of passive facilitation heat exchange, and the Design and optimization of furtheing investigate its inherent mechanism that flows and conduct heat and rule heat exchanging equipment has important practical significance.
From nineteen seventies so far, the development and application of augmentation of heat transfer technology research is placed on very important status by the scholar of whole world country.After entering the nineties, augmentation of heat transfer technology enters the develop rapidly stage, and it updates and makes rapid progress, and second generation augmentation of heat transfer technology is considered to a kind of routine techniques gradually, so each scholar sets about starting second generation technology is developed to the third generation.Famous scholar Bergles proposed recently a kind of up-to-date the 4th generation Combination Intensified Heat Transfer Technology concept, be about to two kinds or several enhanced heat exchange means and use simultaneously, make heat transfer effect be better than the enhanced heat exchange effect under single means effect.
So far, the single enhanced heat exchange means of the many employings of traditional high-performance heat exchanger.The one, adopt rough surface thermoexcell, by improving the de-eddy current of wall surface shape design forming, reach and destroy boundary layer, improve the object of the heat transfer property in boundary layer, such as transversally flute tube, spiral grooved tube, cannelure pipe, bellows, positive coil and finned tube etc.The 2nd, adopt wall turbulent element far away, produced continuously eddy current, under the impact of centrifugal force, make the fluid of tube hub and the fluid in wall boundary layer fully mix.But its heat transfer effect of single means is undesirable.
Summary of the invention
The object of the present invention is to provide the regular gap twisted strip ball pipe heat exchanger of dashing forward, solved that existing heat exchanger adopts the single undesirable problem of enhanced heat exchange means, heat transfer effect more.
The technical solution adopted in the present invention is to comprise tube-like envelope, cold medium inlet, cold media outlet pipe, thermal medium inlet tube, thermal medium outlet, two tube sheets, the first end socket, the second end socket, horizontal baffle, a plurality of deflection plate and tube banks, wherein, a tube sheet is respectively installed on the two ends inwall of shell, shell wherein one end peristome is provided with the first end socket, the other end peristome of shell is provided with the second end socket, the first end socket and the second end socket are by the both ends open sealing of shell, the top, one end of shell is provided with thermal medium inlet tube, the other end bottom of shell is provided with thermal medium outlet, in the first end socket, be provided with horizontal baffle, the first end socket inner space is divided into upper and lower identical two parts, the top of the first end socket is provided with cold medium inlet, the bottom of the first end socket is provided with cold media outlet pipe, the inside of shell is provided with a plurality of deflection plates along caliber direction, deflection plate is staggered installation of in the enclosure on wall up and down, enclosure is formed from one end to the other end staggered gas channel up and down, a plurality of tube banks are set in shell vertically, the two ends of tube bank are all fixed in the tubesheet holes of tube sheet, tube bank is supported through deflection plate and by deflection plate, tube bank is the prominent tube bank of regular gap twisted strip ball.
Further, the prominent tube bank of described regular gap twisted strip ball is for cooperatively interacting between the tube bank of ball lug structure and regular gap twisted strip, 180 ° of torque y of interpolation twisted strip, between adjacent twisted strip, having spacing is gap S, the internal diameter of pipe is D, turn round and widely equate w=D with bore, the gap S between twisted strip is regular isometric gap or the short long gap of rule or regular length gap.
Further, prominent prominent of described ball is less than gap S or prominent prominent of described ball equals gap S or prominent prominent of described ball is greater than gap S apart from P apart from P apart from P.
Further, described prominent distance is 50mm.
Further, described clearance distance is 25mm~75mm.
Further, prominent prominent of described ball is 0.5mm~2mm deeply.
The invention has the beneficial effects as follows and combine rough surface strengthening and adopt two kinds of enhanced heat exchange modes of wall turbulent element far away, in view of surperficial base different with the zone of action of fluid-based enhancements, avoided the configuration conflict of thermoexcell and its to coexist to form and made a concerted effort, the heat transfer effect of the prominent pipe heat exchanger of regular gap twisted strip ball is further strengthened.
Accompanying drawing explanation
Fig. 1 is shell-and-tube heat exchanger structural representation of the present invention;
Fig. 2 is regular gap twisted strip structural representation of the present invention;
Fig. 3 is that the present invention restrains layout longitudinal section view;
Fig. 4 is that the embodiment of the present invention 1 tie is arranged schematic diagram;
Fig. 5 is that the embodiment of the present invention 2 ties are arranged schematic diagram;
Fig. 6 is that the embodiment of the present invention 3 ties are arranged schematic diagram;
Fig. 7 is that the embodiment of the present invention 4 ties are arranged schematic diagram;
Fig. 8 is that the embodiment of the present invention 5 ties are arranged schematic diagram;
Fig. 9 is that the embodiment of the present invention 6 ties are arranged schematic diagram;
Figure 10 is that the embodiment of the present invention 7 ties are arranged schematic diagram;
Figure 11 is that the embodiment of the present invention 8 ties are arranged schematic diagram;
Figure 12 is that the embodiment of the present invention 9 ties are arranged schematic diagram.
In figure, 1. tube-like envelope, 2. cold medium inlet, 3. cold media outlet pipe, 4. thermal medium inlet tube, 5. thermal medium outlet, 6. tube sheet, 7. the first end socket, 8. deflection plate, 9. tube bank, 10. the second end socket, 11. horizontal baffles.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Be 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 inlet 2, cold media outlet pipe 3, thermal medium inlet tube 4, thermal medium outlet 5, two tube sheets 6, the first end socket 7, the second end socket 10, horizontal baffle 11, a plurality of deflection plate 8 and tube banks 9, wherein, a tube sheet 6 is respectively installed on the two ends inwall of shell 1, shell 1 wherein one end peristome is provided with the first end socket 7, the other end peristome of shell 1 is provided with the second end socket 10, the first end socket 7 and the second end socket 10 are by the both ends open sealing of shell 1, the top, one end of shell 1 is provided with thermal medium inlet tube 4, the other end bottom of shell 1 is provided with thermal medium outlet 5, in the first end socket 7, be provided with horizontal baffle 11, the first end socket 7 inner spaces are divided into upper and lower identical two parts, the top of the first end socket 7 is provided with cold medium inlet 2, the bottom of the first end socket 7 is provided with cold media outlet pipe 3, the inside of shell 1 is provided with a plurality of deflection plates 8 along caliber direction, deflection plate 8 is staggered installation of up and down on shell 1 inwall, make that shell 1 is inner to be formed from one end to the other end staggered gas channel up and down, a plurality of tube banks 9 are set in shell 1 vertically, the two ends of tube bank 9 are all fixed in the tubesheet holes of tube sheet 6, tube bank 9 is passed deflection plate 8 and is supported by deflection plate 8, tube bank 9 is the prominent tube bank of regular gap twisted strip ball.
Tie structure as shown in Figure 2, the prominent tube bank of regular gap twisted strip ball is for cooperatively interacting between the tube bank of ball lug structure and regular gap twisted strip, 180 ° of torque y of interpolation twisted strip, between adjacent twisted strip, spacing is gap S, the internal diameter of pipe is D, turn round and widely equate w=D with bore, voidage s is: s=S/D, the gap S between twisted strip be gap S between regular isometric gap or described twisted strip for the gap S between the short long gap of rule or described twisted strip be regular length gap.Prominent prominent of ball is less than gap S or prominent prominent of described ball equals gap S or prominent prominent of described ball is greater than gap S apart from P apart from P apart from P.Prominent distance is 50mm.Gap S is 25mm~75mm.The prominent prominent dark H of ball is 1mm.Fig. 3 is that the present invention restrains layout longitudinal section view, comprises tube pitch (tp), corrugation pitch (wp).
The present invention uses the theory of surperficial base and fluid-based cooperative reinforcing, has designed the prominent pipe heat exchanger of a kind of regular gap twisted strip ball.Throttle effect due to shell side, the shell-side enhancement techniques heat transfer effect of outer expanding bellows tube is apparently higher than tube side, the introducing of pipe interpolation twisted strip further strengthens the reinforcing heat exchange capability of tube side, can realize the effect of bilateral efficient enhanced heat exchange of while, being therefore specially adapted to manage side and shell-side needs gas-gas (vapour) heat-exchanging state of efficient strengthening simultaneously.
A kind of efficient regular gap twisted strip ball of the present invention pipe heat exchanger of dashing forward, adopts the complex intensifying heat transfer technology under surperficial base and fluid-based synergy, has greatly improved complex heat transfer efficiency.And the prominent pipe heat exchanger of regular gap twisted strip ball can property performance period mixes saves material with separated time, reduces manufacturing cost.And, the prominent pipe heat exchanger of regular gap twisted strip ball of the present invention is compared with traditional gap twisted strip pipe, on extended surface, install whirlpool generator additional, can lose compared with under the condition of small flow resistance amplification, can in wider reynolds number range, obviously promote enhanced heat exchange effect.In addition, can realize the bilateral enhanced heat exchange of pipe side and shell-side, be applicable to gas-gas (vapour) heat exchange, increase the scope of application of medium.The cyclonic effect of this efficient heat-exchanging pipe has great advantage its tool aspect good antiscale property, and the exploitation of this efficient heat-exchanging pipe can directly apply to the improvement and design of old shell-and-tube heat exchanger, traditional heat exchanger tube is replaced and is reached the high efficiency of heat exchanger.
The complex heat transfer effectiveness formula of the prominent pipe heat exchanger of regular gap twisted strip ball of the present invention is:
η=(Nu·Nu s -1)·(f·f s -1) -1/3
Wherein, Nu=α D ν -1-nusselt number.α-convection transfer rate; The qualitative size of D-; ν-kinematic viscosity.F=Δ p (LD -1) -1(0.5 ρ U b 2) -1-coefficient of frictional resistance.The Δ p-pressure loss; L-pipe range; ρ-density; U b-mean flow rate.Subscript: s-light pipe.
The present invention designs the prominent tubular construction of a kind of regular gap twisted strip ball, between ball lug structure and built-in total length twisted strip, cooperatively interacts, and prominent arc radius (the being crest radius) R of ball gets 5mm-20mm in processing allowed band.Gap between twisted strip comprises three kinds of layouts, regular isometric gap, the short long gap of rule and regular length gap twisted strip.The prominent distance that ball is prominent and the coupling design of the gap of twisted strip comprise 3 kinds of layouts, and prominent distance is less than gap, and prominent distance equals gap and prominent apart from being greater than gap.The value of prominent distance is 50mm, and the span in gap is in 25mm~75mm.Prominent is 1mm deeply, dashes forward and deeply can affect the distance between projection, larger on the heat transfer property of shell-side and resistance performance impact.The material of twisted strip and pipeline can be chosen stainless steel, carbon steel and steel alloy according to different heat-exchanging states.
The present invention will be described to enumerate specific embodiment below:
Specific embodiments one: described in (with reference to Fig. 4) the present embodiment is the geometrical model of the prominent pipe of built-in regular gap twisted strip ball.The inside diameter D of pipe and prominent apart from being fixed as respectively 20mm and 50mm.180 ° of torque y=50mm of interpolation twisted strip.Gap between twisted strip is arranged as isometric gap 25mm, and bellows tube on wall has more waveform configuration, depth of convolution H=1mm than light pipe in conjunction with interpolation twisted strip in conjunction with interpolation twisted strip.
Specific embodiments two: the difference of (with reference to Fig. 5) the present embodiment and embodiment one is that the gap between twisted strip is 25mm, and other structures are identical with embodiment one.
Specific embodiments three: the difference of (with reference to Fig. 6) the present embodiment and embodiment one is that the spacing between twisted strip is 75mm, the prominent prominent distance of ball is less than gap.Other structures are identical with embodiment one.
Specific embodiments four: the difference of (with reference to Fig. 7) the present embodiment and embodiment one is that the gap between twisted strip is arranged as the short long gap of rule.Other structures are identical with embodiment one.
Specific embodiments five: the difference of (with reference to Fig. 8) the present embodiment and embodiment one is that the gap between twisted strip is arranged as the short long gap of rule.Gap between twisted strip is 50mm, and the prominent prominent distance of ball is greater than gap.Other structures are identical with embodiment one.
Specific embodiments six: the difference of (with reference to Fig. 9) the present embodiment and embodiment one is that the gap between twisted strip is arranged as the short long gap of rule.Gap between twisted strip is 75mm, and the prominent prominent distance of ball is less than gap.Other structures are identical with embodiment one.
Specific embodiments seven: the difference of (with reference to Figure 10) the present embodiment and embodiment one is that the gap between twisted strip is arranged as regular length gap.Other structures are identical with embodiment one.
Specific embodiments eight: the difference of (with reference to Figure 11) the present embodiment and embodiment one is that the gap between twisted strip is arranged as regular length gap.Gap between twisted strip is 50mm, and other structures are identical with embodiment one.
Specific embodiments nine: the difference of (with reference to Figure 12) the present embodiment and embodiment one is that the gap between twisted strip is arranged as regular length gap.Gap between twisted strip is 75mm, and other structures are identical with embodiment one.
Advantage of the present invention has:
(1) the prominent pipe heat exchanger of built-in regular gap twisted strip ball of the present invention has merged rough surface and two kinds of enhanced heat exchange technology of inner flow-disturbing, formed the complex intensifying heat transfer technology under surperficial base and fluid-based synergy, heat transfer property is further distilled, compare and there is better heat transfer property with traditional single-acting enhanced heat exchange technology.
(2) the prominent pipe heat exchanger of built-in regular gap twisted strip ball of the present invention, when saving material, makes tube fluid occur periodically mixing with separated, has avoided remodeling twisted strip processing trouble or has not made full use of space in pipe.
(3) the prominent pipe heat exchanger of built-in regular gap twisted strip ball of the present invention can be realized enhanced heat exchange within the scope of all fluidised forms.Regular gap twisted strip of the present invention produces periodic blending of falling liquid film with separated, can the Secondary Flow effect of fluid under any fluidised form all increase to some extent, and what especially laminar flow and transition flow increased is more obvious.And traditional enhanced heat exchange technology generally can only be carried out enhanced heat exchange to a kind of fluidised form.
(4) the prominent pipe heat exchanger of built-in regular gap twisted strip ball of the present invention has strengthened the enhanced heat exchange effect of pipe side and shell-side simultaneously, and traditional enhanced heat exchange measure generally can only realize one-sided enhanced heat exchange.The prominent inside pipe wall of built-in regular gap twisted strip and ball coordinates realizes the strengthening of pipe side, and the throttling action between the prominent pipe of ball has realized shell-side strengthening.Therefore, the present invention has widened the scope of application of heat-exchange working medium, such as all lower gas-gas (vapour) heat exchange of the both sides coefficient of heat transfer.
The above is only to better embodiment of the present invention, not the present invention is done to any pro forma restriction, any simple modification that every foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.

Claims (6)

1. the prominent pipe heat exchanger of regular gap twisted strip ball, is characterized in that: comprise tube-like envelope (1), cold medium inlet (2), cold media outlet pipe (3), thermal medium inlet tube (4), thermal medium outlet (5), two tube sheets (6), the first end socket (7), the second end socket (10), horizontal baffle (11), a plurality of deflection plate (8) and tube bank (9), wherein, a tube sheet (6) is respectively installed on the two ends inwall of shell (1), shell (1) wherein one end peristome is provided with the first end socket (7), the other end peristome of shell (1) is provided with the second end socket (10), the first end socket (7) and the second end socket (10) are by the both ends open sealing of shell (1), the top, one end of shell (1) is provided with thermal medium inlet tube (4), the other end bottom of shell (1) is provided with thermal medium outlet (5), in the first end socket (7), be provided with horizontal baffle (11), the first end socket (7) inner space is divided into upper and lower identical two parts, the top of the first end socket (7) is provided with cold medium inlet (2), the bottom of the first end socket (7) is provided with cold media outlet pipe (3), the inside of shell (1) is provided with a plurality of deflection plates (8) along caliber direction, deflection plate (8) is staggered installation of up and down on shell (1) inwall, make that shell (1) is inner to be formed from one end to the other end staggered gas channel up and down, a plurality of tube banks (9) are set in shell (1) vertically, the two ends of tube bank (9) are all fixed in the tubesheet holes of tube sheet (6), tube bank (9) is passed deflection plate (8) and is supported by deflection plate (8), tube bank (9) is the prominent tube bank of regular gap twisted strip ball.
2. according to the prominent pipe heat exchanger of regular gap twisted strip ball described in claim 1, it is characterized in that: the prominent tube bank of described regular gap twisted strip ball is for cooperatively interacting between the tube bank of ball lug structure and regular gap twisted strip, 180 ° of torque y of interpolation twisted strip, between adjacent twisted strip, having spacing is gap S, the internal diameter of pipe is D, turn round and widely equate with bore, the gap S between twisted strip is regular isometric gap or the short long gap of rule or regular length gap.
3. according to the prominent pipe heat exchanger of regular gap twisted strip ball described in claim 2, it is characterized in that: prominent prominent of described ball is less than gap S or prominent prominent of described ball equals gap S or prominent prominent of described ball is greater than gap S apart from P apart from P apart from P.
4. according to the prominent pipe heat exchanger of regular gap twisted strip ball described in claim 2, it is characterized in that: described prominent distance is 50mm.
5. according to the prominent pipe heat exchanger of regular gap twisted strip ball described in claim 2, it is characterized in that: described clearance distance is 25mm~75mm.
6. according to the prominent pipe heat exchanger of regular gap twisted strip ball described in claim 2, it is characterized in that: the prominent dark 0.5mm~2mm of being that described ball is prominent.
CN201410421489.XA 2014-08-25 2014-08-25 Tubular heat exchanger with regular gap twisted strips and ball protrusions Pending CN104180691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410421489.XA CN104180691A (en) 2014-08-25 2014-08-25 Tubular heat exchanger with regular gap twisted strips and ball protrusions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410421489.XA CN104180691A (en) 2014-08-25 2014-08-25 Tubular heat exchanger with regular gap twisted strips and ball protrusions

Publications (1)

Publication Number Publication Date
CN104180691A true CN104180691A (en) 2014-12-03

Family

ID=51961907

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410421489.XA Pending CN104180691A (en) 2014-08-25 2014-08-25 Tubular heat exchanger with regular gap twisted strips and ball protrusions

Country Status (1)

Country Link
CN (1) CN104180691A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634138A (en) * 2015-02-15 2015-05-20 卢晓丽 Shell-and-tube heat exchanger
CN104634141A (en) * 2015-02-15 2015-05-20 中国计量学院 Shell-and-tube heat exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2715088Y (en) * 2004-05-17 2005-08-03 启东市巨龙石油化工装备有限公司 High viscosity fluid highly efficient heat exchanger
CN2735285Y (en) * 2004-04-24 2005-10-19 辽宁石油化工大学 Segmented turbolator
CN203642767U (en) * 2013-12-23 2014-06-11 潍坊恒安散热器集团有限公司 Transverse outward-convex heat dissipating tube and heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2735285Y (en) * 2004-04-24 2005-10-19 辽宁石油化工大学 Segmented turbolator
CN2715088Y (en) * 2004-05-17 2005-08-03 启东市巨龙石油化工装备有限公司 High viscosity fluid highly efficient heat exchanger
CN203642767U (en) * 2013-12-23 2014-06-11 潍坊恒安散热器集团有限公司 Transverse outward-convex heat dissipating tube and heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634138A (en) * 2015-02-15 2015-05-20 卢晓丽 Shell-and-tube heat exchanger
CN104634141A (en) * 2015-02-15 2015-05-20 中国计量学院 Shell-and-tube heat exchanger
CN104634138B (en) * 2015-02-15 2016-05-04 卢晓丽 A kind of tubular heat exchanger
CN104634141B (en) * 2015-02-15 2016-06-08 中国计量学院 A kind of tubular heat exchanger

Similar Documents

Publication Publication Date Title
CN103411454A (en) Tube type heat exchanger with outer-protruding-type corrugated tubes arranged in staggering mode
CN101349514A (en) Internal and external fins intubatton type high temperature heat exchanger
CN105571356A (en) Rib/spiral piece combined double-pipe heat exchanger
CN104165534A (en) Tubular heat exchanger with twisted strips in relaxation fit with protruding tubes
RU2489664C1 (en) Shell-and-tube heat exchanger
CN102564189A (en) Heat transfer pipe
CN104180691A (en) Tubular heat exchanger with regular gap twisted strips and ball protrusions
CN202675938U (en) Radiator
CN104180689A (en) Built-in full-length twisted ball projecting tube type heat exchanger
CN202229631U (en) Heat exchanger
CN101435668A (en) Internal and external fin flat tube heat exchanger
CN105202950A (en) Shell-and-tube type heat exchanger
CN201281561Y (en) Shell-pipe head exchanger by double helix flowing of fluid medium in or out of heat exchange tube
CN102252540A (en) Heat exchanger of Cantor set fractal structure type
CN104034194A (en) Rectangular twisted-toothed finned tube and heat exchange tube bundle of same
CN202216587U (en) Heat exchanger adopting oval flat spiral heat exchange tube
CN202221265U (en) Shell-and-tube heat exchanger
CN105258533A (en) Shell-and-tube heat exchanger of fractal structure
CN101363694A (en) Shell-pipe head exchanger by double helix flowing of fluid medium in or out of heat exchange tube
CN101424490A (en) Discontinuous double oblique crossing rib strengthened heat exchange method between flat-plates
CN201434621Y (en) Multiple spiral flow shell and tube heat exchanger for fluid outside heat transfer tubes
CN102345990A (en) Heat exchanger
CN201007624Y (en) Dual-shell pass U-shaped tube ellipse baffle plate heat exchanger
CN206037815U (en) Spiral baffling board for heat exchanger
CN206037803U (en) Petaloid heat exchange tube and whole circular orifice plate combination formula heat transfer component

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20141203