CN105841523A - Corrugated straight pipe heat exchanger and heat exchange method - Google Patents

Corrugated straight pipe heat exchanger and heat exchange method Download PDF

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Publication number
CN105841523A
CN105841523A CN201610375252.1A CN201610375252A CN105841523A CN 105841523 A CN105841523 A CN 105841523A CN 201610375252 A CN201610375252 A CN 201610375252A CN 105841523 A CN105841523 A CN 105841523A
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CN
China
Prior art keywords
tube
shell
straight
ripple
heat exchanger
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
CN201610375252.1A
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Chinese (zh)
Inventor
曲斌
梁有仪
李晶晶
于涛
段有龙
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.)
Acre Coking and Refractory Engineering Consulting Corp MCC
Original Assignee
Acre Coking and Refractory Engineering Consulting Corp MCC
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 Acre Coking and Refractory Engineering Consulting Corp MCC filed Critical Acre Coking and Refractory Engineering Consulting Corp MCC
Priority to CN201610375252.1A priority Critical patent/CN105841523A/en
Publication of CN105841523A publication Critical patent/CN105841523A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/08Tubular elements crimped or corrugated in longitudinal section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12Arrangements 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

Abstract

The invention relates to a corrugated straight pipe heat exchanger and a heat exchange method. The corrugated straight pipe heat exchanger consists of an upper pipe box, a shell pass cylinder and a lower pipe box, wherein the upper pipe box is provided with a pipe pass medium inlet, the lower pipe box is provided with a pipe pass medium outlet, and a shell pass medium inlet and a shell pass medium outlet are separately arranged on the two sides of the shell pass cylinder; the two ends of the shell pass cylinder are separately connected with the upper pipe box and the lower pipe box through expansion cylinders; a plurality of corrugated straight pipes are vertically arranged in the shell pass cylinder as heat exchange pipes, and the main bodies of the corrugated straight pipes adopt structures with corrugated pipe sections and straight pipe sections, namely that the waveform in one period comprises a wave peak, a linear section, a wave peak and a wave trough; smooth straight pipes are arranged at the two ends of the corrugated straight pipes and used for fixedly connecting the corrugated straight pipes with upper and lower pipe plates; and a plurality of jet plates with square holes are arranged on the shell pass cylinder along the height. The heat exchange efficiency is effectively improved, scale generation is inhibited, and the wear problem between the heat exchange pipes and baffle plates is solved. Besides, the corrugated straight pipe heat exchanger also has the advantages that the heat exchange pipes are convenient to disassemble, equipment size is small, cost is low, and the like.

Description

A kind of ripple straight pipe heat exchanger and heat-exchange method thereof
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger, particularly relate to a kind of ripple carrying out heat exchange for Chemical Manufacture medium Straight pipe heat exchanger and heat-exchange method thereof.
Background technology
Traditional heat exchangers generally uses straight tube heat exchanger tube and segmental baffle, generally there is heat exchange efficiency the highest, dirty in heat exchanger The problems such as dirt deposition is fast, the difficult cleaning of dirt, need to add expansion joint when the temperature difference is big, and equipment cost is high.Along with exchange heat pipe research Go deep into and the development of machining, in recent years, occur in that the multiple shapes such as transversally flute tube, shaped telescopic tube, spiral grooved tube and corrugated tube The heat exchanger tube of formula, although the structure of these heat exchanger tubes is different, but its enhanced heat transfer mechanism is similar, i.e. transversal by changing The shape in face, to obtain the effect of fluid level turbulent flow.But spiral grooved tube is relative with transversally flute tube heat transfer efficiency the highest, scaling Pipe and corrugated tube processing difficulties, easily wear and tear with deflection plate, need to add pipe box during installation, increase cost.And segmental baffle is easy Fouling, shell-side pressure drop is big, and heat transfer effect is bad, and the shock of fluid easily makes heat exchanger produce vibration with washing away.
Summary of the invention
The invention provides a kind of ripple straight pipe heat exchanger and heat-exchange method thereof, use heat exchanger tube and the square hole of ripple straight tube form Fluidic plate is applied in combination, and uses expansion cylindrical structure, is effectively increased the heat exchange efficiency of heat exchanger, suppresses the generation of dirt, Solve the wear problem between heat exchanger tube and deflection plate, additionally there is heat exchanger tube convenient disassembly, equipment volume is little, cost is low Etc. advantage.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of ripple straight pipe heat exchanger, is made up of upper tube box, shell-side cylinder and lower tube box, and upper tube box is provided with tube side medium inlet, Lower tube box is provided with tube side media outlet, and shell-side cylinder both sides set shell side medium inlet and shell side media outlet respectively;Described shell side Cylinder two ends are connected with upper tube box, lower tube box by expansion cylinder respectively, and the two ends of shell-side cylinder extend respectively into expansion cylinder In, the diameter expanding cylinder is more than the diameter of shell-side cylinder and matches with the maximum gauge of upper tube box, lower tube box;Shell side cylinder Internal being vertically arranged many ripple straight tubes as heat exchanger tube, the main body of ripple straight tube is that bellows piece adds straight tube section structure, i.e. one The waveform in individual cycle includes crest-straightway-crest-trough;The two ends of ripple straight tube set smooth straight for upper, lower tube Plate is fixing to be connected, and shell-side cylinder edge is high to being provided with multiple square hole fluidic plate.
Described square hole fluidic plate is located at the straight length of ripple straight tube, for perforated baffle, it offers multiple square through hole, and side Four limits of shape through hole are tangent with straight length external diameter.
Described ripple straight tube uses light-wall pipe to process, and smooth straight uses thick-walled pipe processing, the external diameter of smooth straight and ripple Stricture of vagina straight tube external diameter is equal, and it processes through trimming with ripple straight tube junction, and it is interior with ripple straight tube welding even to stretch into ripple straight tube Connect.
Heat-exchange method based on a kind of ripple straight pipe heat exchanger, shell-side fluid enters from shell side medium inlet, top, through expanding Square hole fluidic plate, the edge between square through hole and ripple straight tube is arrived after the anti-washing structure that cylinder and shell-side cylinder collectively constitute Gap is flowed out in the way of jet, and with the tube side media for heat exchange in ripple straight tube, shell side media outlet flows out the most from below; Tube side fluid enters from tube side medium inlet, and in ripple straight tube, form and shell-side fluid with eddy-currents carry out high efficient heat exchanging After, flow out from tube side media outlet.
Compared with prior art, the invention has the beneficial effects as follows:
1) heat exchanger tube has bellows segment and straight length, and the medium in tube side easily forms vortex, improves the inside and outside medium of pipe Turbulent extent, destroys flow boundary layer, reduces heat transmission resistance, improves heat exchange efficiency;
2) heat exchanger tube is light-wall pipe, and thermal resistance reduces, and the coefficient of heat transfer improves;
3) ripple straight tube tube wall is washed away acutely by tube side medium, the vortex of formation and temperature deformation, makes tube wall not be easily formed dirt Dirt, it is achieved automatically clear up;
4) due to the raising of heat exchange efficiency, making heat exchange area reduce, equipment volume reduces therewith, and makes its manufacturing cost big Width reduces;
5) there is straight length owing to ripple straight tube connects at the crest of bellows piece, make heat exchanger tube and deflection plate (square hole jet Plate) can lossless coordinate, reduce the wear rate of heat exchanger tube, simplify the installation of heat exchanger tube, more easily dismantle;
6) the under low pressure support to tube sheet of ripple straight tube is elastic, and upper and lower tube sheet is by the active force phase of ripple straight tube To little, it is possible to reduce tube plate thickness, reduce manufacturing cost;
7) due to ripple straight tube, there is elasticity, when the temperature difference is bigger, it is not necessary to expansion joint is set, reduce cost further;
8) shell side end uses and expands cylindrical structure, makes inside lining sleeve structure, it is to avoid shell-side fluid is direct at feed inlet and outlet Impact thin-walled ripple straight tube, improves heat exchange area utilization rate;
9) square hole fluidic plate is porous circular baffle plate, reduces shell-side pressure drop, is not likely to produce dirt and vibration;
10) shell-side fluid is gone out from the square hole edge slot jet of square hole fluidic plate, strengthens the less turbulence of fluid, improves shell The coefficient of heat transfer of journey.
Accompanying drawing explanation
Fig. 1 is the structural representation of ripple straight pipe heat exchanger of the present invention.
Fig. 2 is the mounting structure schematic diagram of square hole fluidic plate of the present invention and ripple straight tube.
Fig. 3 is the structural representation of ripple straight tube of the present invention.
In figure: 1. lower tube box 2. lower tube box flange 3. lower perforated plate 4. shell side media outlet 5. shell-side cylinder 6. ear formula Shell side medium inlet, bearing 7. upper perforated plate 8. upper tube box flange 9. upper tube box 10. tube side medium inlet 11. 12. Expand cylinder 13. square hole fluidic plate 14. ripple straight tube 14a. crest 14b. trough 14c. straightway 15. tube side Media outlet 16. square through hole 17. smooth straight
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
As it is shown in figure 1, a kind of ripple straight pipe heat exchanger of the present invention, by upper tube box 9, shell-side cylinder 5 and lower tube box 1 Composition, upper tube box 9 is provided with tube side medium inlet 10, and lower tube box 1 is provided with tube side media outlet 15, shell-side cylinder 5 both sides Set shell side medium inlet 11 and shell side media outlet 4 respectively;Described shell-side cylinder 5 two ends respectively by expand cylinder 12 with Upper tube box 9, lower tube box 1 are connected, and the two ends of shell-side cylinder 5 extend respectively in expansion cylinder 12, expand cylinder 12 Diameter is more than the diameter of shell-side cylinder 5 and matches with the maximum gauge of upper tube box 9, lower tube box 1;Erect in shell-side cylinder 5 Directly arranging many ripple straight tubes 14 as heat exchanger tube, the main body of ripple straight tube 14 is that bellows piece adds straight tube section structure, i.e. one The waveform in individual cycle includes crest 14a-straightway 14c-crest 14a-trough 14b;The two ends of ripple straight tube 14 set smooth directly Pipe 17 is connected for fixing with upper and lower tube sheet 7,3, shell-side cylinder 5 along height to being provided with multiple square hole fluidic plate 13.
Described square hole fluidic plate 13 is located at the straight length of ripple straight tube 14, for perforated baffle, it offers multiple square through hole 16, and four limits of square through hole 16 are tangent with straight length external diameter.(as shown in Figure 2)
Described ripple straight tube 14 uses light-wall pipe to process, and smooth straight 17 uses thick-walled pipe to process, smooth straight 17 External diameter equal with ripple straight tube 14 external diameter, it processes through trimming with ripple straight tube 14 junction, and stretches into ripple straight tube It is welded to connect with ripple straight tube 14 in 14.(as shown in Figure 3)
Heat-exchange method based on a kind of ripple straight pipe heat exchanger, shell-side fluid enters from shell side medium inlet, top 11, passes through Arrive square hole fluidic plate 13 after expanding the anti-washing structure that cylinder 12 and shell-side cylinder 5 collectively constitute, from square through hole 16 with Edge slot between ripple straight tube 14 flows out in the way of jet, and the tube side media for heat exchange in ripple straight tube 14, finally from Lower section shell side media outlet 4 flows out;Tube side fluid enters from tube side medium inlet 10, with eddy-currents in ripple straight tube 14 Form and shell-side fluid carry out high efficient heat exchanging after, flow out from tube side media outlet 15.
As it is shown in figure 1, shell-side cylinder 5 is provided with hanging support 6 for installing stationary heat exchangers, shell-side cylinder 5 two ends Expand cylinder 12 to be connected, by lower perforated plate 3 and lower tube box flange 2 by upper perforated plate 7 is fixing with upper tube box flange 8 respectively Fixing connection, the agent structure of composition heat exchanger.Shell-side cylinder 5 two ends extend to expand in cylinder 12, at shell side medium Anti-washing structure is collectively constituted by shell-side cylinder 5 and expansion cylinder 12 at entrance 11.
The operation principle of a kind of ripple straight pipe heat exchanger of the present invention is: heat exchanger tube uses light-wall pipe to make ripple straight tube 14, Formed crest 14a-straightway 14c-crest 14a-trough 14b special construction, two ends connect thick-walled pipe make smooth directly Pipe 17, fixes for the support with upper and lower tube sheet 7,3.Tube side fluid medium is in crest 14a and the cross section of trough 14b In change procedure, create the most radially flow velocity, form eddy-currents, under the least flow velocity, be rapidly achieved turbulent flow, increase Strong heat transfer, clears up dirt automatically, and straightway 14c is for convenience of coordinating with square hole fluidic plate 13, makes heat exchanger tube the most easy to wear. Shell-side fluid flows vertically through trough, the turbulent flow of amplified medium, augmentation of heat transfer.Shell side end uses and expands cylinder 12 structure, Avoid shell-side fluid directly to impact thin-walled ripple straight tube 14 at feed inlet and outlet, improve heat exchange area utilization rate.Ripple straight tube Heat exchanger uses square hole fluidic plate 13 to replace segmental baffle, the straight length that square through hole 16 is restrained in order to fixing ripple straight tube, Shell-side fluid flows out with the form of jet from gap with ripple straight tube 14 of square through hole 16, it is to avoid fluid directly clashes into Shell-side cylinder 5, heat exchanger is less scaling, and can reduce shell-side pressure drop, reduces the vibration of heat exchanger, improves changing of heat exchanger Thermal effect.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, and appoints What those familiar with the art is in the technical scope that the invention discloses, according to technical scheme and send out Bright design equivalent or change in addition, all should contain within protection scope of the present invention.

Claims (4)

1. a ripple straight pipe heat exchanger, is made up of upper tube box, shell-side cylinder and lower tube box, and upper tube box is provided with tube side medium Entrance, lower tube box is provided with tube side media outlet, and shell-side cylinder both sides set shell side medium inlet and shell side media outlet respectively;Its Being characterised by, described shell-side cylinder two ends are connected with upper tube box, lower tube box by expansion cylinder respectively, the two ends of shell-side cylinder Extend respectively into expansion cylinder in, expand cylinder diameter more than shell-side cylinder diameter and with upper tube box, the maximum of lower tube box Diameter compatible closes;Being vertically arranged many ripple straight tubes in shell-side cylinder as heat exchanger tube, the main body of ripple straight tube is bellows piece Add straight tube section structure, i.e. the waveform in a cycle includes crest-straightway-crest-trough;The two ends of ripple straight tube set smooth Straight tube is connected for fixing with upper and lower tube sheet, and shell-side cylinder edge is high to being provided with multiple square hole fluidic plate.
A kind of ripple straight pipe heat exchanger the most according to claim 1, it is characterised in that described square hole fluidic plate is located at Outside the straight length of ripple straight tube, for perforated baffle, it offers multiple square through hole, and four limits of square through hole are with straight length Footpath is tangent.
A kind of ripple straight pipe heat exchanger the most according to claim 1, it is characterised in that described ripple straight tube uses thin Wall pipe processes, and smooth straight uses thick-walled pipe processing, and the external diameter of smooth straight is equal with ripple straight tube external diameter, itself and ripple Stricture of vagina straight tube junction processes through trimming, and stretches into and be connected with ripple straight tube welding in ripple straight tube.
4. heat-exchange method based on a kind of ripple straight pipe heat exchanger described in claim 1, it is characterised in that shell-side fluid Enter from shell side medium inlet, top, after the anti-washing structure that expansion cylinder and shell-side cylinder collectively constitute, arrive square hole jet Plate, flows out in the way of jet from the edge slot between square through hole and ripple straight tube, changes with the tube side medium in ripple straight tube Heat, shell side media outlet flows out the most from below;Tube side fluid enters from tube side medium inlet, with whirlpool in ripple straight tube After the form of stream and shell-side fluid carry out high efficient heat exchanging, flow out from tube side media outlet.
CN201610375252.1A 2016-05-31 2016-05-31 Corrugated straight pipe heat exchanger and heat exchange method Pending CN105841523A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106197120A (en) * 2016-08-29 2016-12-07 中冶焦耐(大连)工程技术有限公司 A kind of petal heat exchanger tube and full-circle spray pattern orifice plate combination type heat exchange element
CN112146479A (en) * 2020-09-29 2020-12-29 扬中申扬换热设备有限公司 Heat exchanger with shell side anti-scouring structure

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CN101614494A (en) * 2009-07-21 2009-12-30 华南理工大学 The fixed tube sheet type prestressed heat exchanger and the processing method thereof of band external flow guiding cylinder
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106197120A (en) * 2016-08-29 2016-12-07 中冶焦耐(大连)工程技术有限公司 A kind of petal heat exchanger tube and full-circle spray pattern orifice plate combination type heat exchange element
CN112146479A (en) * 2020-09-29 2020-12-29 扬中申扬换热设备有限公司 Heat exchanger with shell side anti-scouring structure

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Application publication date: 20160810

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