CN202101595U - Longitudinal flow shell-and-tube heat exchanger - Google Patents

Longitudinal flow shell-and-tube heat exchanger Download PDF

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Publication number
CN202101595U
CN202101595U CN2011201395202U CN201120139520U CN202101595U CN 202101595 U CN202101595 U CN 202101595U CN 2011201395202 U CN2011201395202 U CN 2011201395202U CN 201120139520 U CN201120139520 U CN 201120139520U CN 202101595 U CN202101595 U CN 202101595U
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CN
China
Prior art keywords
tube
heat exchanger
shell
fluid
baffling
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Expired - Fee Related
Application number
CN2011201395202U
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Chinese (zh)
Inventor
王学生
王争昪
简林均
代晶晶
任超
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East China University of Science and Technology
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East China University of Science and Technology
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Priority to CN2011201395202U priority Critical patent/CN202101595U/en
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Publication of CN202101595U publication Critical patent/CN202101595U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a longitudinal flow shell-and-tube heat exchanger, which comprises a cylinder body. Tube plates are connected with two sides of the cylinder body in symmetrical mode. The outer sides of the tube plates are symmetrically connected with tube boxes and end sockets. The outer sides of the end sockets are connected with a tube stream fluid inlet and a tube stream fluid outlet respectively. The lateral wall of the cylinder body close to the tube stream fluid outlet is symmetrically provided with a shell stream fluid inlet and a shell stream fluid outlet, a heat exchange tube bundle is axially arranged inside the cylinder body and connected with the tube plates, one end of the heat exchange tube bundle is communicated with the tube stream fluid inlet, and the other end of the heat exchange tube bundle is communicated with the tube stream fluid outlet. The heat exchange tube bundle is composed of heat exchange tubes, and deflecting fences are axially arranged inside the cylinder body at intervals. Deflecting flat bars are connected with the inner sides of the deflecting fences and divided into two or three groups to be stacked into a net shape to be arranged. Each group of the deflecting flat bars are parallelly arranged at intervals, and layering partition board reserving spaces are arranged inside the deflecting fences. The longitudinal flow shell-and-tube heat exchanger improves heat transfer efficiency of the heat exchanger, reduces flow resistance of fluid, reduces vibration of the tube bundle, and reduces running energy consumption of the heat exchanger.

Description

A kind of vertical flow tube shell type heat exchanger
Technical field
The utility model belongs to technical field of heat exchange, particularly, relates to a kind of heat exchanger, more specifically, relates to a kind of vertical flow tube shell type heat exchanger.
Background technology
Heat exchanger is widely used in industrial departments such as chemical industry, chemical fertilizer, oil refining, power, building, food, and heat exchanger can be divided into dividing wall type heat exchanger and direct contact heat exchanger by structure.Wherein shell-and-tube (claiming shell and tube again) heat exchanger is most typical dividing wall type heat exchanger, and its application in industry has long history, and dominate in all heat exchangers still so far.Shell-and-tube heat exchanger mainly contains housing, tube bank, tube sheet and end socket etc. partly to be formed, and how rounded housing is, and bundle of parallel tubes is equipped with in inside, and the tube bank two ends are fixed on the tube sheet.In shell-and-tube heat exchanger, carry out two kinds of fluids of heat exchange, a kind of mobile in pipe, its stroke is called tube side; A kind of mobile outside pipe, its stroke is called shell side.The wall of tube bank is heat-transfer area.For improving the extratubal fluid heat transfer coefficient, the horizontal baffle plate of some is installed in housing usually.Baffle plate not only can be prevented the fluid short circuit, increases fluid velocity, also force fluid by prescribed path repeatedly cross-flow through tube bank less turbulence is greatly increased.
Yet deflection plate (or claiming baffle plate) structure is all adopted in traditional shell-and-tube heat exchanger shell side inside, and fluid flowing in shell side is lateral flow; Not only fluid suffers resistance big, and inner has a large amount of heat transfer dead bands, causes flow field and temperature field inhomogeneous; Cause that heat exchanger heat transfer efficient is low, shell-side pressure drop is big; Make this type shell-and-tube heat exchanger required drive and high material consumption to be prone to cause problems such as corrosion on Equipment and flow-induced vibration simultaneously that service life of equipment is short.Therefore research and develop the heat exchange efficiency height, fluid resistance is little, volume is little, the novel high-efficiency and energy-saving heat exchanger of in light weight, long service life, will produce huge economic benefit and social benefit.
For solving the problem of above-mentioned existence, several related patent U.S. Patent No. below the domestic main existence at present.
Application (patent) number: 200810219873.6 patent names: integral fin tube heat exchanger.This patent discloses a kind of integral fin tube heat exchanger, and it comprises housing and tube bank, and the housing two ends are respectively equipped with bobbin carriage; Housing sidewall is provided with fluid inlet and fluid issuing; Guide shell is equipped with in the shell inboard in the fluid inlet place, and fluid gets into fluid inlet and carries out the longitudinal stream distribution through guide shell, and guide shell and housing are welded to connect; Bobbin carriage near fluid inlet is provided with the tube bank fluid issuing; Bobbin carriage near fluid issuing is provided with the tube bank fluid inlet, and tube bank has several spaced deflecting fences to support, and an end of tube bank is communicated with tube bank fluid inlet on the bobbin carriage; The other end of tube bank is communicated with the tube bank fluid issuing on the bobbin carriage, and tube bank connects through tube sheet.Compactness of the present invention is high, saves the metal consumptive material, and spatial volume reduces, and heat transfer coefficient improves greatly, has reduced mechanical loss.
It is support component that yet the deflecting fence that this invention provides adopts the baffling round bar, and limitation is applied to the heat exchanger that heat exchanger tube is a square arrangement, is the heat exchanger of rounded projections arranged for heat exchanger tube; At the heat exchange tube spacing condition of the GB151-1999 regulation (heat exchanger tube of Φ 25mm for example; Tube pitch is 32mm, square stringing, and it can be 7mm through the maximal clearance of baffling round bar; And when adopting the triangle stringing; It can be merely 2.71mm through the maximal clearance of baffling round bar) under, therefore, arrange baffling round bar and infeasible according to the stringing mode that this invention provided again.
Application (patent) number: 200920190359.4 patent names: a kind of round trip separate heat exchanger.This patent designs a kind of round trip separate heat exchanger, comprises heat exchange tube, bobbin carriage and separator.Be provided with blocking-up dividing plate and heat exchanger tube and horizontal deflecting fence longitudinally in the heat exchange tube, the gap that heat exchanger tube passes between the rod baffle of deflecting fence is provided with.Bobbin carriage is separated into two spaces of partition through the bobbin carriage dividing plate with bobbin carriage, and separator is separated into two identical spaces through separator with separator, and bobbin carriage and separator are communicated with through heat exchanger tube.This utility model can prevent to stop up, and is widely used in the heat exchange occasion that contains solid particle, the demanding fluid of rate of flow of fluid, can reach to reclaim heat, avoid the purpose stopped up.
Yet it is support component that the deflecting fence that this utility model provides also adopts the baffling round bar, is not suitable for the heat exchanger that heat exchanger tube is a rounded projections arranged equally.
The utility model content
For solving the problem of above-mentioned existence; The purpose of the utility model be to provide a kind of according to the different heat exchange mode (no phase transformation, the phase transformation condensation is arranged and three kinds of forms of phase transformation boiling heat transfer are arranged) adopt different augmentation of heat transfers tube banks, select different deflecting fences, select monoshell journey or bivalve journey according to the shell side needs according to the different cloth form of tubes of heat exchanger tube, thereby improved greatly existing heat exchanger heat transfer efficiency, reduce fluid flow resistance, reduce tube bundle vibration, accelerate the shell side mean flow rate and reduce the operation energy consumption of existing heat exchanger and the vertical flow tube shell type heat exchanger of equipment investment.
For achieving the above object, the utility model adopts following technical scheme: a kind of vertical flow tube shell type heat exchanger comprises cylindrical shell; Said cylindrical shell bilateral symmetry is connected with tube sheet, and the said tube sheet outside is symmetrically connected with bobbin carriage, end socket successively, and the said end socket outside is connected with tube side fluid import and tube side fluid outlet respectively; Said cylindrical shell is symmetrically arranged with shell-side fluid import and shell-side fluid outlet near the sidewall that tube side fluid exports an end; Said barrel axially is provided with the heat exchanger tube tube bank, and said heat exchanger tube tube bank is connected with tube sheet, and said heat exchanger tube is restrained an end and is communicated with the tube side fluid import; The other end is communicated with the tube side fluid outlet; Said heat exchanger tube tube bank is made up of heat exchanger tube, and said barrel axially spaced-apart is provided with deflecting fence, it is characterized in that:
Said deflecting fence inboard is connected with the baffling flat bar, and said baffling flat bar divides two groups or three groups of netted settings of range upon range of formation, and parallel interval setting between every group of baffling flat bar is provided with layering dividing plate headspace in the said deflecting fence.
Wherein, The purpose that the baffling flat bar is set is: the heat exchanger that is triangularly arranged for heat exchanger tube; Use the support component of baffling flat bar as heat exchanger tube, feasible vertical stream heat exchanger with triangle cloth form of tubes of heat transfer advantage is achieved, thereby significantly improves heat transfer efficiency.Simultaneously, consider baffling flat bar thinner thickness, support heat exchanger tube according to traditional stringing mode; May cause and cause defectives such as tube bundle vibration because of support stiffness inadequately; Therefore, the utility model adopts, and said baffling flat bar divides two groups or three groups of netted settings of range upon range of formation; To strengthen the support stiffness of every deflecting fence, be implemented in and select multi-form deflecting fence under the various supports rigidity requirement for use.In addition; The purpose that layering dividing plate headspace is set is to make the user to select monoshell journey or bivalve journey according to the shell side needs; In said layering dividing plate headspace, insert the layering dividing plate and be vertical stream bivalve pass heat exchanger, extract the layering dividing plate out, be vertical stream monoshell pass heat exchanger.
Wherein, select for use the purpose of deflecting fence to be to reduce fluid flow resistance, enhance heat transfer efficient.
More preferably, said barrel is provided with the layering dividing plate along central axis, and said layering dividing plate one end is connected with the tube sheet that exports a side near tube side fluid.The purpose that the layering dividing plate is set is that vertical stream heat exchanger is set to vertical stream bivalve pass heat exchanger, thereby improves heat transfer efficiency.
More preferably, said heat exchanger tube is low fin heat exchange pipe.Adopt the purpose of low fin heat exchange pipe to be to make heat exchanger to be applicable to no phase-change heat transfer, can be used for making gas-gas, solution-air, liquid-liquid does not have phase-change heat-exchanger;
Said heat exchanger tube also can be selected helical groove heat exchange pipe for use, and being applicable to strengthen has the phase transformation condensation heat transfer, can make condenser;
Said heat exchanger tube also can be selected porous surface tube for use, and being applicable to strengthen has the phase transformation boiling heat transfer, can make evaporimeter.
Utilize coarse heat transfer finned surface to promote the turbulivity of fluid boundary layer, attenuate heat transfer viscous flow underlayer thickness, thereby reinforcement boundary layer heat transfer are managed outer heat transfer and have been obtained reinforcement simultaneously in the pipe.
More preferably, can be connected with the baffling round bar in the said deflecting fence, said baffling round bar parallel interval is provided with.The purpose that the baffling round bar is set is: be used for the heat exchanger that heat exchanger tube is square stringing mode, thereby improve heat transfer efficiency.
The utility model provides a kind of and has adopted different augmentation of heat transfers tube banks, selects different deflecting fences, selects monoshell journey or bivalve journey according to the shell side needs according to the different cloth form of tubes of heat exchanger tube according to different heat exchange mode (no phase transformation, the phase transformation condensation is arranged and three kinds of forms of phase transformation boiling heat transfer are arranged), thus improved greatly existing heat exchanger heat transfer efficiency, reduce fluid flow resistance, reduce tube bundle vibration, accelerate the shell side mean flow rate and reduce the operation energy consumption of existing heat exchanger and the vertical flow tube shell type heat exchanger of equipment investment.
Description of drawings
The vertical flow tube shell type heat exchanger structural representation that Fig. 1 provides for the utility model.
Fig. 2 is a deflecting fence cloth sketch map.
Fig. 3 is the horizontal support formula deflecting fence sketch map of square stringing mode for heat exchanger tube.
Fig. 4 is the vertical brace type deflecting fence sketch map of square stringing mode for heat exchanger tube.
Fig. 5 is the hexagon brace type deflecting fence sketch map of heat exchanger tube stringing mode triangular in shape.
Fig. 6 is four limit brace type deflecting fence sketch mapes of heat exchanger tube stringing mode triangular in shape.
Fig. 7 is low fin heat exchange pipe sketch map.
Fig. 8 is the helical groove heat exchange pipe sketch map.
Fig. 9 is the porous surface tube sketch map.
Among the figure, 1, cylindrical shell 2, bobbin carriage 3, tube sheet 4, deflecting fence 5, layering dividing plate 6, heat exchanger tube tube bank 7, shell-side fluid import 8, shell-side fluid outlet 9, end socket 10, tube side fluid import 11, tube side fluid outlet 12, baffling flat bar 13, layering dividing plate 14, heat exchanger tube 15, baffling round bar 16, layering dividing plate headspace.
The specific embodiment
Further describe below in conjunction with the specific embodiment of accompanying drawing the utility model.Present embodiment only is the description to the utility model preferred forms, and the scope to the utility model does not have any restriction.
The connected mode of vertical flow tube shell type heat exchanger is following in the utility model:
As shown in Figure 1; Cylindrical shell 1 bilateral symmetry is connected with tube sheet 3, and said tube sheet 3 outsides are symmetrically connected with bobbin carriage 2, end socket 9 successively, and said end socket 9 outsides are connected with tube side fluid import 10 and tube side fluid outlet 11 respectively; Said cylindrical shell 1 is symmetrically arranged with shell-side fluid import 7 and shell-side fluid outlet 8 near the sidewall that tube side fluid exports 11 1 ends; Said cylindrical shell 1 inner shaft is to being provided with heat exchanger tube tube bank 6, and said heat exchanger tube tube bank 6 is connected with tube sheet 3, and said heat exchanger tube is restrained 6 one ends and is communicated with tube side fluid import 10; The other end is communicated with tube side fluid outlet 11; Said cylindrical shell 1 inner shaft is to being arranged at intervals with deflecting fence 4, and said cylindrical shell 1 inside is provided with layering dividing plate 13 along central axis, and said layering dividing plate 13 1 ends are connected with the tube sheet 3 that exports 11 1 sides near tube side fluid.
As shown in Figure 2; Said deflecting fence 4 inboards are connected with baffling flat bar 12; 12 fens two groups of (see figure 6)s of said baffling flat bar or three groups of netted settings of the range upon range of formation of (see figure 5); Every group of baffling flat bar 12 parallel interval settings also are provided with layering dividing plate headspace 16 in the said deflecting fence 4, said layering dividing plate 13 passes layering dividing plate headspace 16.
The utility model has proposed corresponding multi-form baffling flat bar formula deflecting fence 4 to triangle cloth form of tubes under the different tube diameters; For heat exchanger tube 14 external diameters when 12mm is following; Adopt hexagon brace type deflecting fence 4 (see figure 5)s; Its baffling flat bar 12 divides three groups to be arranged in three adjacent planes with different gradients, is netted setting, every group of baffling flat bar 12 parallel interval settings; When 14mm is above, adopt four limit brace type deflecting fence 4 (see figure 6)s for heat exchanger tube 14 external diameters, its baffling flat bar 12 divides two groups to be arranged in two adjacent planes with different gradients, is netted setting, and is same, every group of baffling flat bar 12 parallel interval settings.
If heat exchanger tube 14 is the deflecting fence 4 of square stringing mode, its baffling round bar 15 can be that the horizontal interval is provided with (see figure 3) or vertical spacing is provided with (see figure 4).
Adopt baffling flat bar 12 or baffling round bar 15 exchange heat pipes 14 to provide support; It is mobile to make the heat exchanger shell pass fluid become parallel (vertically) by lateral flow; This has not only significantly reduced the heat transfer dead band; And reduced significantly fluid because of repeatedly repeatedly the baffling shell side pressure of losing fall, can carry merit obtain higher film coefficient of heat transfer with lower fluid.
Simultaneously, heat exchanger tube 14 can adopt low fin heat exchange pipe (see figure 7) to be applicable to no phase-change heat transfer, and can be used for making gas-gas, solution-air, liquid-liquid does not have phase-change heat-exchanger;
Said heat exchanger tube 14 also can be selected the helical groove heat exchange pipe (see figure 8) for use, and being applicable to strengthen has the phase transformation condensation heat transfer, can make condenser;
Said heat exchanger tube 14 also can be selected the porous surface tube (see figure 9) for use, and being applicable to strengthen has the phase transformation boiling heat transfer, can make evaporimeter.
Utilize coarse heat transfer finned surface to promote the turbulivity of fluid boundary layer, attenuate heat transfer viscous flow underlayer thickness, thereby reinforcement boundary layer heat transfer are managed outer heat transfer and have been obtained reinforcement simultaneously in the pipe.
A kind of vertical flow tube shell type heat exchanger that as above provides, fluid flow direction are vertically and flow, and promptly restrain 6 parallelly with heat exchanger tube, and strengthen shell side and conduct heat, and improve film coefficient of heat transfer 30%; Reduce shell-side resistance drop 35%; Improve shell-side heat transfer combination property, make (α o/ Δ P) improve 50%; Weight of equipment alleviates about 40%; Corrosion-resistant, long service life.

Claims (6)

1. a vertical flow tube shell type heat exchanger comprises cylindrical shell (1), and said cylindrical shell (1) bilateral symmetry is connected with tube sheet (3); Said tube sheet (3) outside is symmetrically connected with bobbin carriage (2), end socket (9) successively; Said end socket (9) outside is connected with tube side fluid import (10) and tube side fluid outlet (11) respectively, and said cylindrical shell (1) is symmetrically arranged with shell-side fluid import (7) and shell-side fluid outlet (8) near the sidewall of tube side fluid outlet (11) one ends, and said cylindrical shell (1) inner shaft is to being provided with heat exchanger tube tube bank (6); Said heat exchanger tube tube bank (6) is connected with tube sheet (3); Said heat exchanger tube tube bank (6) one ends are communicated with tube side fluid import (10), and the other end is communicated with tube side fluid outlet (11), and said heat exchanger tube tube bank (6) is made up of heat exchanger tube (14); Said cylindrical shell (1) inner shaft is characterized in that to being arranged at intervals with deflecting fence (4):
Said deflecting fence (4) inboard is connected with baffling flat bar (12),
Said baffling flat bar (12) divides two groups or three groups of netted settings of range upon range of formation, parallel interval setting between every group of baffling flat bar (12),
Be provided with layering dividing plate headspace (17) in the said deflecting fence (4).
2. a kind of vertical flow tube shell type heat exchanger according to claim 1 is characterized in that: said cylindrical shell (1) is inner to be provided with layering dividing plate (13) along central axis, and said layering dividing plate (13) one ends are connected with the tube sheet (3) that exports (11) one sides near tube side fluid.
3. a kind of vertical flow tube shell type heat exchanger according to claim 1 is characterized in that: said heat exchanger tube (14) is low fin heat exchange pipe.
4. a kind of vertical flow tube shell type heat exchanger according to claim 1 is characterized in that: said heat exchanger tube (14) is a helical groove heat exchange pipe.
5. according to the described a kind of vertical flow tube shell type heat exchanger of claim 1, it is characterized in that: said heat exchanger tube (14) is a porous surface tube.
6. a kind of vertical flow tube shell type heat exchanger according to claim 1 is characterized in that: can be connected with baffling round bar (15), said baffling round bar (15) parallel interval setting in the said deflecting fence (4).
CN2011201395202U 2011-05-05 2011-05-05 Longitudinal flow shell-and-tube heat exchanger Expired - Fee Related CN202101595U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201395202U CN202101595U (en) 2011-05-05 2011-05-05 Longitudinal flow shell-and-tube heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201395202U CN202101595U (en) 2011-05-05 2011-05-05 Longitudinal flow shell-and-tube heat exchanger

Publications (1)

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CN202101595U true CN202101595U (en) 2012-01-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713382A (en) * 2013-12-13 2015-06-17 浙江盾安机电科技有限公司 Double-temperature-zone shell-and-tube condenser
CN106693419A (en) * 2015-11-12 2017-05-24 中国石油化工股份有限公司 Vertical tube falling-film evaporator
CN107115827A (en) * 2016-02-25 2017-09-01 亚申科技研发中心(上海)有限公司 A kind of calandria type fixed bed reactor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713382A (en) * 2013-12-13 2015-06-17 浙江盾安机电科技有限公司 Double-temperature-zone shell-and-tube condenser
CN106693419A (en) * 2015-11-12 2017-05-24 中国石油化工股份有限公司 Vertical tube falling-film evaporator
CN107115827A (en) * 2016-02-25 2017-09-01 亚申科技研发中心(上海)有限公司 A kind of calandria type fixed bed reactor
CN111111567A (en) * 2016-02-25 2020-05-08 亚申科技(浙江)有限公司 Tube array type fixed bed reactor

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120104

Termination date: 20130505