CN105890407A - Self-supporting type contracted-expanded tube heat exchanger and heat exchange method - Google Patents
Self-supporting type contracted-expanded tube heat exchanger and heat exchange method Download PDFInfo
- Publication number
- CN105890407A CN105890407A CN201610375571.2A CN201610375571A CN105890407A CN 105890407 A CN105890407 A CN 105890407A CN 201610375571 A CN201610375571 A CN 201610375571A CN 105890407 A CN105890407 A CN 105890407A
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- China
- Prior art keywords
- tube
- shell
- heat exchanger
- self
- section
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- 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.)
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
Abstract
The invention relates to a self-supporting type contracted-expanded tube heat exchanger and a heat exchange method. The two ends of a shell pass barrel are connected with an upper channel and a lower channel through expanded cylinders correspondingly and extend into the expanded cylinders correspondingly; the diameter of the expanded cylinders is greater than that of the shell pass barrel and matched with the maximum diameter of the upper channel and the maximum diameter of the lower channel; the shell pass barrel is internally and vertically provided with a plurality of gradually-contracted and gradually-expanded tubes to form a heat exchange tube bundle; each gradually-contracted and gradually-expanded tube is formed in the mode that a contracted section tube body, a throat tube section tube body, a diffusion section tube body and a straight flow section tube body are arrayed periodically; the gradually-contracted and gradually-expanded tubes achieve self-supporting through contact of the straight flow sections; and a plurality of special-shaped supporting rings are horizontally arranged on the outer side of the heat exchange tube bundle in the height direction of the heat exchanger. By utilization of the periodical change of the sections of the gradually-contracted and gradually-expanded heat exchange tubes and the self-supporting structures of the tube bodies, the heat exchange efficiency of the heat exchanger is effectively improved, generation of dirt is restrained, shell pass resistance is reduced, and in addition, the self-supporting type contracted-expanded tube heat exchanger has the advantages of being convenient to mount and dismount, small in occupied space of equipment, low in manufacturing cost and the like.
Description
Technical field
The present invention relates to a kind of heat exchanger, particularly relate to a kind of self-support type convergent-divergent tube heat exchanger and heat-exchange method.
Background technology
Heat exchanger is recovery waste heat, waste liquid, improves the capital equipment of heat utilization rate, and heat exchanger tube and deflection plate are then heat exchange
The core parts of device.It is the highest to there is heat exchange efficiency in the straight tube heat exchanger tube generally used and segmental baffle, and in heat exchanger, dirt is tight
Weight, the problems such as shell-side pressure drop is big, and equipment cost is high.
Summary of the invention
The invention provides a kind of self-support type convergent-divergent tube heat exchanger and heat-exchange method, utilize the week in tapered flaring heat exchanger tube cross section
The change of phase property and body self supporting structure, be effectively improved the heat exchange efficiency of heat exchanger, the generation of suppression dirt, reduce shell side resistance
Power, additionally has the advantages such as convenient disassembly, equipment occupation of land saves, cost is low.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of self-support type convergent-divergent tube heat exchanger, including being sequentially connected with the shell formed by upper tube box, shell-side cylinder and lower tube box
Formula heat exchanger, upper tube box sets tube side media outlet, and lower tube box sets tube side medium inlet, and side, shell-side cylinder top sets shell side and is situated between
Matter entrance, bottom opposite side sets shell side media outlet；Described shell-side cylinder two ends respectively by expand cylinder and upper tube box, under
Bobbin carriage is connected, and the two ends of shell-side cylinder extend respectively in expansion cylinder, expands the diameter diameter more than shell-side cylinder of cylinder
And match with the maximum gauge of upper tube box, lower tube box；Many tapered increaser composition heat exchanger tubes it are vertically arranged in shell-side cylinder
Bundle, tapered increaser is formed by contraction section-trunnion section-diffuser-direct current section body periodic arrangement vertically, tapered increaser
Between by direct current section contact realize self-supporting；Along heat exchanger height to being horizontally disposed with several abnormity support ring outside heat-exchanging tube bundle.
Described tapered increaser two ends are fixed by smooth straight and upper perforated plate, lower perforated plate respectively and are connected, and smooth straight is sleeved on
On the trunnion section body at tapered increaser two ends, smooth straight is thick-walled pipe.
Each section of body of described tapered increaser is formed by the compacting of thin-walled straight tube, and wherein the length of contraction section body is more than diffuser
The length of body.
Described abnormity support ring is made up of two special-shaped support ring semi-rings, and the exterior contour of abnormity support ring is cross-section with heat-exchanging tube bundle
The fold-line-shaped profile that face outer apex line is formed adapts.
Heat-exchange method based on a kind of self-support type convergent-divergent tube heat exchanger, shell-side fluid enters shell side cylinder from shell side medium inlet
Body, through the anti-washing structure being made up of shell-side cylinder upper end and expansion cylinder, contacts seam from the direct current section of self-supporting heat-exchanging tube bundle
At gap, jet flows out；Shell side has the free air space of maximum in trunnion section, through the change of tapered increaser each body flow area
Change strengthening jet；Tube side fluid from tube side medium inlet enter upper tube box, in tapered increaser through diffuser, direct current section,
The periodicity changes of section of contraction section and trunnion section, form and shell-side fluid with eddy-currents carry out high efficient heat exchanging；After heat exchange,
Shell-side fluid is left from shell side media outlet, and tube side fluid is left from tube side media outlet.
Compared with prior art, the invention has the beneficial effects as follows:
1) tapered flaring heat exchanger tube forms contraction section, trunnion section, diffuser and the periodic structure of direct current section along pipe range direction,
Making fluid be under the barometric gradient that direction changes repeatedly flowing all the time, be rapidly achieved turbulent flow under the least flow velocity, strengthening passes
Thermal effect；
2) tapered increaser is light-wall pipe, and thermal resistance reduces, and can improve the coefficient of heat transfer；
3) diffuser makes fluid explosion form whirlpool, destroys flow boundary layer, reduces heat transmission resistance, improves heat exchange
Efficiency, is not easily formed dirt, it is achieved automatically clear up；
4) due to the raising of heat exchange efficiency, making heat exchange area reduce, equipment volume declines therewith, saves floor space, and
Be conducive to being greatly reduced of manufacturing cost；
5) being provided with abnormity support ring outside heat-exchanging tube bundle, its shape adapts with the arrangement mode of heat-exchanging tube bundle, is conducive to
Fixing pipe heat pipe bundle, it is to avoid fluid is broken up；
6) shell-side cylinder end sets expansion cylindrical structure, makes inside lining sleeve structure, it is to avoid shell-side fluid is straight at feed inlet and outlet
Connect the tapered increaser of impact, improve heat exchange area utilization rate；
7) no baffle plate in shell side, effectively removes dead band, less scaling, reduces shell-side pressure drop, improves heat exchange efficiency；
8) realize self-supporting by linear contact lay between tapered increaser, save segmental baffle, easier for installation, reduce
Cost；
9) shell-side fluid is at pipe outer wall through rough passage baffling, strengthens the less turbulence of fluid, destroys tube wall
On fluid boundary layer, improve further the heat transfer effect of heat exchanger.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-support type convergent-divergent tube heat exchanger of the present invention.
Fig. 2 is the partial structurtes schematic diagram of heat-exchanging tube bundle of the present invention.
Fig. 3 is the structural representation of abnormity support ring semi-ring of the present invention.
Fig. 4 is heat-exchanging tube bundle of the present invention and abnormity support ring mounting structure schematic diagram.
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
Bearing 7. shell side medium inlet 8. tube side media outlet 9. diffusion mouth 10. upper tube box 11. upper tube box flange 12.
It is smooth directly that upper perforated plate 13. expands cylinder 14. abnormity support ring 15. tapered increaser 16. tube side medium inlet 17.
Pipe 18. diffuser 19. direct current section 20. contraction section 21. trunnion section
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 self-support type convergent-divergent tube heat exchanger of the present invention, including by upper tube box 10, shell-side cylinder 5
With the shell-and-tube heat exchanger that lower tube box 1 is sequentially connected with composition, upper tube box 10 sets tube side media outlet 8, and lower tube box 1 sets pipe
Journey medium inlet 16, side, shell-side cylinder 5 top sets shell side medium inlet 7, and bottom opposite side sets shell side media outlet 4；
Described shell-side cylinder 5 two ends are connected with upper tube box 10, lower tube box 1 by expansion cylinder 13 respectively, the two of shell-side cylinder 5
End extend respectively into expansion cylinder 13 in, expand cylinder 13 diameter more than shell-side cylinder 5 diameter and with upper tube box 10,
The maximum gauge of lower tube box 1 matches；It is vertically arranged many tapered increasers 15 in shell-side cylinder 5 and forms heat-exchanging tube bundle,
Tapered increaser 15 vertically by contraction section 20-trunnion section 21-diffuser 18-direct current section 19 body periodic arrangement formed (as
Shown in Fig. 2), realize self-supporting by direct current section 19 contact between tapered increaser 15；Along heat exchanger outside heat-exchanging tube bundle
High to being horizontally disposed with several abnormity support ring 14.
Described tapered increaser 15 two ends are fixed by smooth straight 17 be connected with upper perforated plate 12, lower perforated plates 3 respectively, light
Sliding straight tube 17 is sleeved on trunnion section 21 body at tapered increaser 15 two ends, and smooth straight 17 is thick-walled pipe.(such as figure
Shown in 2)
Each section of body of described tapered increaser 15 is formed by the compacting of thin-walled straight tube, and wherein the length of contraction section 20 body is more than
The length of diffuser 18 body.
Described abnormity support ring 14 is made up of two special-shaped support ring semi-rings, the exterior contour of abnormity support ring 14 and heat exchanger tube
The fold-line-shaped profile that bundle transverse section outer apex line is formed adapts.(as shown in Figure 3, Figure 4)
Heat-exchange method based on a kind of self-support type convergent-divergent tube heat exchanger, shell-side fluid enters shell side cylinder from shell side medium inlet 7
Body 5, through the anti-washing structure being made up of shell-side cylinder 5 upper end and expansion cylinder 13, from the direct current of self-supporting heat-exchanging tube bundle
At section 19 contact gap, jet flows out；Shell side has the free air space of maximum in trunnion section 21, through tapered increaser 15
The change strengthening jet of each body flow area；Tube side fluid enters upper tube box 10 from tube side medium inlet 16, tapered gradually
Through the periodicity changes of section of diffuser 18, direct current section 19, contraction section 20 and trunnion section 21 in expander 15, with whirlpool
The form of stream and shell-side fluid carry out high efficient heat exchanging；After heat exchange, shell-side fluid is left from shell side media outlet 4, tube side fluid
Leave from tube side media outlet 8.
As it is shown in figure 1, in a kind of self-support type convergent-divergent tube heat exchanger of the present invention, lower tube box 1 and lower tube box flange 2 phase
Even, tube side medium inlet 16 is at the axial location of lower tube box 1；Lower tube box flange 2 is connected with lower perforated plate 3, shell-side cylinder
5 lower ends are connected with lower perforated plate 3 and upper perforated plate 12；Shell-side cylinder 5 sidewall is provided with hanging support 6；Upper tube box flange 11
Being connected with upper perforated plate 12 and upper tube box 10, tube side media outlet 8 and diffusion mouth 9 are located on upper tube box.Shell-side cylinder 5 liang
End is provided with expansion cylinder 13, and shell side medium inlet 7 and shell side media outlet 4 are respectively on the expansion cylinder 13 at two ends.
Tapered increaser 15 is connected between upper perforated plate 12 and lower perforated plate 3, and pipe end is provided with straight tube 17, and body is formed and shrinks
Section 20, trunnion section 21, diffuser 18 and the periodic structure of direct current section 19, can improve the turbulent extent of tube side medium.
Heat-exchanging tube bundle relies on the contact of each tapered increaser direct current section 19 to realize self-supporting, reduces shell side dead band, less scaling, improves
The heat transfer effect of heat exchanger.Several abnormity support ring 14 it is provided with (in corresponding direct current section 19) outside heat-exchanging tube bundle, it is to avoid
Shell-side fluid breaks up tapered increaser 15.
The operation principle of a kind of self-support type convergent-divergent tube heat exchanger of the present invention is: the heat exchange of self-support type convergent-divergent tube heat exchanger
Pipe is tapered increaser 15, uses Thin-walled Straight pipe to make contraction section 20, trunnion section 21, diffuser 18 and direct current section 19,
Form the cyclically-varying in body cross section；Tapered increaser 15 two ends connect the smooth straight 17 of heavy wall, for upper and lower
Fixing and support between tube sheet 12,3.Tube side fluid is gradually lowered at contraction section 20 pressure, and flow velocity raises, at trunnion
Section 21 flow velocitys reach maximum, form lower pressure environment, suck more tube side fluid, enhanced heat exchange effect；Flow at diffuser 18
Body explosion, produces violent whirlpool and strengthens heat transfer, automatically clear up dirt；Direct current section 19 realizes heat exchange by linear contact lay
Tube bank self-supporting, constitutes shell side turbulent element.Abnormity support ring 14, abnormity support ring 14 it is provided with in the outside of heat-exchanging tube bundle
Process by the exterior contour of heat-exchanging tube bundle, be positioned at the middle part of heat-exchanging tube bundle, two special-shaped support ring semi-rings connect and compose,
Fluid is avoided to break up heat-exchanging tube bundle.Shell side end uses and expands cylinder 13 structure, is used for protecting tapered increaser 15.Shell side
Fluid is following current between heat-exchanging tube bundle, it is to avoid fluid directly clashes into shell-side cylinder 5, reduces shell-side pressure drop, removes dead band, no
Easily fouling, fluid flows out at heat-exchanging tube bundle contact gap, rolls over through rough passage at tapered increaser 15 outer wall
Stream, increases the turbulivity of fluid, destroys the fluid boundary layer on tube wall, improves the heat transfer effect of heat exchanger.
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 (5)
1. a self-support type convergent-divergent tube heat exchanger, forms including being sequentially connected with by upper tube box, shell-side cylinder and lower tube box
Shell-and-tube heat exchanger, upper tube box sets tube side media outlet, and lower tube box sets tube side medium inlet, and side, shell-side cylinder top sets shell
Journey medium inlet, bottom opposite side sets shell side media outlet；It is characterized in that, described shell-side cylinder two ends are respectively by expanding
Cylinder is connected with upper tube box, lower tube box, and the two ends of shell-side cylinder extend respectively in expansion cylinder, and the diameter expanding cylinder is big
In the diameter of shell-side cylinder and match with the maximum gauge of upper tube box, lower tube box；Be vertically arranged in shell-side cylinder many tapered
Increaser composition heat-exchanging tube bundle, tapered increaser is vertically by contraction section-trunnion section-diffuser-direct current section body periodic arrangement
Formed, between tapered increaser, realize self-supporting by the contact of direct current section；Along heat exchanger height to being horizontally disposed with outside heat-exchanging tube bundle
Several abnormity support rings.
A kind of self-support type convergent-divergent tube heat exchanger the most according to claim 1, it is characterised in that described tapered flaring
Pipe two ends are fixed by smooth straight and upper perforated plate, lower perforated plate respectively and are connected, and smooth straight is sleeved on tapered increaser two ends
On trunnion section body, smooth straight is thick-walled pipe.
A kind of self-support type convergent-divergent tube heat exchanger the most according to claim 1, it is characterised in that described tapered flaring
Each section of body of pipe is formed by the compacting of thin-walled straight tube, and wherein the length of contraction section body is more than the length of diffuser body.
A kind of self-support type convergent-divergent tube heat exchanger the most according to claim 1, it is characterised in that described abnormity supports
Ring is made up of two special-shaped support ring semi-rings, the exterior contour of abnormity support ring and heat-exchanging tube bundle transverse section outer apex line shape
The fold-line-shaped profile become adapts.
5. heat-exchange method based on a kind of self-support type convergent-divergent tube heat exchanger described in claim 1, it is characterised in that shell
Cheng Liuti enters shell-side cylinder from shell side medium inlet, through the anti-washing structure being made up of shell-side cylinder upper end and expansion cylinder,
Contact jet at gap from the direct current section of self-supporting heat-exchanging tube bundle to flow out；Shell side has the free air space of maximum, warp in trunnion section
Cross the change strengthening jet of tapered increaser each body flow area；Tube side fluid enters upper tube box from tube side medium inlet,
Through the periodicity changes of section of diffuser, direct current section, contraction section and trunnion section in tapered increaser, with the form of eddy-currents
High efficient heat exchanging is carried out with shell-side fluid；After heat exchange, shell-side fluid is left from shell side media outlet, and tube side fluid is from tube side medium
Outlet is left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375571.2A CN105890407A (en) | 2016-05-31 | 2016-05-31 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375571.2A CN105890407A (en) | 2016-05-31 | 2016-05-31 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
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| CN105890407A true CN105890407A (en) | 2016-08-24 |
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| CN201610375571.2A Pending CN105890407A (en) | 2016-05-31 | 2016-05-31 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143886A (en) * | 2017-06-27 | 2017-09-08 | 杨全瑞 | Single tube and its processing method and connection method of a kind of hot blast from liter type combustion chamber |
| CN107178796A (en) * | 2017-06-27 | 2017-09-19 | 杨全瑞 | A kind of radiating stove radiating combustion chamber of heat from wind |
| CN107178797A (en) * | 2017-06-27 | 2017-09-19 | 杨全瑞 | A kind of improved multitube radiating stove |
| CN107449288A (en) * | 2017-08-11 | 2017-12-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer and its method of work |
| CN111351385A (en) * | 2018-12-24 | 2020-06-30 | 赛峰航空助推器股份有限公司 | Air-oil heat exchanger |
| CN117138513A (en) * | 2023-09-13 | 2023-12-01 | 江苏民生重工有限公司 | High-efficiency energy-saving oxidation tail gas condenser |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143886A (en) * | 2017-06-27 | 2017-09-08 | 杨全瑞 | Single tube and its processing method and connection method of a kind of hot blast from liter type combustion chamber |
| CN107178796A (en) * | 2017-06-27 | 2017-09-19 | 杨全瑞 | A kind of radiating stove radiating combustion chamber of heat from wind |
| CN107178797A (en) * | 2017-06-27 | 2017-09-19 | 杨全瑞 | A kind of improved multitube radiating stove |
| CN107449288A (en) * | 2017-08-11 | 2017-12-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer and its method of work |
| CN111351385A (en) * | 2018-12-24 | 2020-06-30 | 赛峰航空助推器股份有限公司 | Air-oil heat exchanger |
| CN117138513A (en) * | 2023-09-13 | 2023-12-01 | 江苏民生重工有限公司 | High-efficiency energy-saving oxidation tail gas condenser |
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Application publication date: 20160824 |