CN109253637A - A kind of heat exchanger with spiral-flow type lattice board - Google Patents
A kind of heat exchanger with spiral-flow type lattice board Download PDFInfo
- Publication number
- CN109253637A CN109253637A CN201710576366.7A CN201710576366A CN109253637A CN 109253637 A CN109253637 A CN 109253637A CN 201710576366 A CN201710576366 A CN 201710576366A CN 109253637 A CN109253637 A CN 109253637A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- baffle plate
- lattice board
- board
- tube
- 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
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
-
- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
-
- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
- F28F2009/224—Longitudinal partitions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of heat exchanger with spiral-flow type lattice board, including cylinder, the coaxial baffle plate of several groups is provided in the heat exchanger, the lattice board that every group of baffle plate is disposed in parallel relation to one another by 5 ~ 8 pieces forms, the fanning strip that every piece of lattice board is 45 ~ 75 degree of central angle, every piece of lattice board and shell side cross section are in 10 ~ 80 degree of angles.The present invention is compared with common segmental baffle board heat exchangers, and biggest advantage is can to effectively reduce the pressure drop of shell-side fluid, to reduce the energy consumption of pump；The flow dead zone for reducing baffling back simultaneously, optimizes shell side Flow Field Distribution；The harm of baffling back flow dead zone fouling nearby can also be reduced.Present invention processing and manufacturing and simple installation, expense are low；It is a kind of new technology of worth large-scale promotion.
Description
Technical field
The present invention relates to a kind of novel baffle shell-and-tube heat exchanger, specifically a kind of novel cyclone type band lattice board
Shell-and-tube heat exchanger.
Background technique
Heat exchanger is one of the most widely used unit in energy system, and wherein shell-and-tube heat exchanger has structure
Simply, design and manufacture are mature, securely and reliably, it is adaptable the advantages that and be widely used in chemical industry, metallurgy, electric power, food
In the industrial circles such as product, energy source and power.The support member of shell-and-tube heat exchanger is particularly significant because it not only to restrained support
Effect can also carry out flow-disturbing to fluid, play the role of augmentation of heat transfer.According to the direction of motion of heat exchanger shell pass fluid, shell
Formula heat exchanger is divided into transverse flow, vertical stream and helical flow heat exchanger etc..Using different support members, the flow behavior of heat exchanger
It is huge with heat exchange property difference.
Traditional single segmental baffle shell-and-tube heat exchanger manufacture is easy, cost is lower, but shell side pressure loss is larger, deposits
In flow dead zone, it is easy fouling and flow-induced is easy to cause to shake.In order to improve the heat-exchange performance of segmental baffle board heat exchangers
Can, to consume higher pump work.In order to improve the comprehensive performance of shell-and-tube heat exchanger, lot of domestic and foreign scholar is to a variety of different
Support member has made intensive studies, such as deflection rod heat exchanger, spiral baffle heat exchanger, lattice sheet heat exchanger, bouble-bow shape folding
Flowing plate heat exchanger etc.；But there is not the research carried out to spiral-flow type muti-piece lattice sheet heat exchanger also so far.
Summary of the invention
It is big to solve shell-side pressure drop existing for shell-and-tube heat exchanger in the prior art, the problems such as there are flow dead zones, this
Invention provides a kind of heat exchanger of novel support structure, and the heat exchanger of spiral-flow type lattice sheet heat exchanger, such structure can reduce shell
Journey pressure drop, as far as possible the flow-disturbing effect of guarantee support construction, simultaneous processing are easy to make.
Technical purpose of the invention is achieved through the following technical solutions:
A kind of heat exchanger with spiral-flow type lattice board, including cylinder, left pipe box and right pipe box are connected to the left side at cylinder both ends
It is provided with shell-side fluid import and shell side fluid outlet on tube sheet and right tube plate, on cylinder, several heat exchanger tubes are provided in cylinder,
Its both ends is fixedly connected on left tube sheet and right tube plate；Several parallel pull rods are additionally provided in cylinder, one end of pull rod is fixed
In on the tube sheet of side；Distance sink tube is placed on pull rod, is connected with the coaxial baffle plate of several groups on distance sink tube, every group of baffle plate by 5 ~
8 pieces of lattice board compositions being disposed in parallel relation to one another, the fanning strip that every piece of lattice board is 45 ~ 75 degree of central angle, every piece of lattice board and shell
Journey cross section is in 10 ~ 80 degree of angles.
Above-mentioned heat exchanger of the invention, the windup-degree between the lattice board of baffle plate make to generate certain stream between blade
Dynamic space, and shell-side fluid flows through the gap between lattice board and forms eddy flow, enhancing flow-disturbing effect later.
In above-mentioned heat exchanger, preferably, the lattice board of every group of baffle plate is the identical fanning strip of central angle size.
In above-mentioned heat exchanger, preferably, the two adjacent groups baffle plate is not overlapped in the axial direction, when installation, to change
The central axis of hot device is the center of circle, and later group baffle plate is relative to 5 degree clockwise or counterclockwise ~ mono- piece flower of previous group baffle plate
The fan-shaped central angle degree of panel, makes two groups of adjacent baffle plates mutually be staggered.With the friendship of certain angle between adjacent baffle
Mistake setting, so that the flow-disturbing of baffle plate acts on enhancing, it can be to avoid flow dead zone.
In above-mentioned heat exchanger, preferably, the distance between described two adjacent groups baffle plate is barrel diameter
30%-60%。
In above-mentioned heat exchanger, preferably, every group of baffle plate has a 5-7 block lattice board, more preferably 6 pieces.
In above-mentioned heat exchanger, preferably, the angle of every piece of lattice board and shell side cross section is 30 ~ 60 degree.
In above-mentioned heat exchanger, preferably, the radius of baffle plate is suitable with the radius of cylinder, i.e. lattice board is from central axis
Offset barrel wall.
In above-mentioned heat exchanger, it will be understood by those skilled in the art that several holes are provided on the lattice board,
So that heat exchanger tube, pull rod and distance sink tube run through, and lattice board contacts fixation with distance sink tube.It should be understood by those skilled in the art that
Be, on the one hand, distance sink tube pass through lattice board hole site should be sealed welding, to prevent water flow, another aspect, lattice
Plate should also be as contacting and passes through encapsulation process with barrel wall.
The design with spiral-flow type lattice sheet heat exchanger of aforementioned present invention be applied to shell-and-tube heat exchanger, including floating head type,
Fixed tube sheet type and U-shaped pipe heat exchanger.
Compared with prior art, the invention has the advantages that
Compared with common segmental baffle board heat exchangers, biggest advantage be can effectively reduce the pressure drop of shell-side fluid, thus
Reduce the energy consumption of pump；The flow dead zone for reducing baffling back simultaneously, optimizes shell side Flow Field Distribution；Baffling can also be reduced
The harm of back flow dead zone fouling nearby.Present invention processing and manufacturing and simple installation, expense are low；It is a kind of worth big rule
The new technology that mould is promoted.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 heat exchanger schematic diagram of the invention with spiral-flow type lattice board；
Fig. 2 baffle plate schematic diagram；
Wherein, 100. cylinder, 201. left tube sheets, 202. right tube plates, 301. left pipe box, 302. right pipe box, 101. heat exchange
Pipe, 102. pull rods, 103. distance sink tubes, 104. baffle plates；
Fig. 3 convenient arc baffle heat exchanger shell side central symmetry section temperature field pattern；
The six potted flower panel heat exchanger shell pass central symmetry section temperature field pattern of band spiral-flow type of Fig. 4 embodiment 1.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Embodiment 1
A kind of heat exchanger with spiral-flow type lattice board, as shown in Figure 1, including cylinder 100, left pipe box 301 and right pipe box 302 are distinguished
It is connected on the left tube sheet 201 and right tube plate 202 at cylinder both ends, shell-side fluid import is provided on cylinder and shell-side fluid goes out
Mouthful, it is provided with heat exchanger tube 101 in cylinder, both ends are connected on left tube sheet 201 and right tube plate 202；If being additionally provided in cylinder
Parallel pull rod 102 is done, 102 right end of pull rod is fixed on right tube plate 202；Distance sink tube 103 is placed on pull rod 102, distance sink tube 103
On be connected with baffle plate 104.
Heat exchanger basic structure size is determined that heat exchanger used is single tube journey monoshell by GB151-1999 shell-and-tube heat exchanger
Journey, specific geometric parameter: barrel diameter 194mm, exchange heat pipe range 540mm, heat exchanger tube diameter 16mm, number of heat exchange tubes 24, heat exchange
Tube spacing 20mm, baffling plate thickness 3mm, baffle(s) spacing 90mm, heat exchanger tube arrangement mode are square arrangement.Baffle plate has 5
Group, every group of baffle plate have 6 lattice boards, as shown in Fig. 2, every piece of lattice board is the fanning strip that a central angle is 60 degree,
Every piece of lattice board and shell side cross section are in 30 degree of angles, and adjacent lattice board is completely overlapped in the axial direction.
For the segmental baffle board heat exchangers baffle(s) spacing of comparison, number of tubes and it is laid out all the same, baffle gap
Height 54.5mm.
It is simulated with fluent software, identical entry condition, the comparison under the conditions of pipe wall temperature is equal is (in addition to two kinds of heat exchange
Device structure is different, under the conditions of other conditions are equal, verifies the performance of six potted flower panels):
Shell-side fluid is water in model, belongs to incompressible fluid, uses split cavity oscillator device；Because being related to heat transfer meter in model
It calculates, so to open energy equation；Both sides' journey of turbulence model selection criteriaModel；The processing of near wall uses standard wall
Surface function, other holding default settings；Velocity pressure coupled modes use the SIMPLE algorithm based on staggered-mesh；Assuming that entrance
Speed is uniformly distributed, shell wall side and baffle plate using it is impermeable, without sliding adiabatic boundary condition；Ignore gravity influence；Meter
It calculates residual error and uses fluent default value, the variation of monitoring residual error is until convergence in calculating process.
The boundary operating speed entrance (velocity-inlet), provides entrance velocity and temperature 283K, flows (out out
Flow) boundary condition, heat exchanger tube show to be defined as permanent wall temperature boundary, wall surface temperature 373K.The setting of entry condition uses turbulent flow
The solution of intensity and hydraulic diameter, momentum, energy and turbulent flow parameter uses Second-order Up-wind format.)
Experimental result is shown: six potted flower panel heat exchanger of spiral-flow type is smaller along axial compressive force variation, and fluid overall flow compares arch
Baffle plate is uniform, and shell-side pressure drop reduces by 28.3% than segmental baffle board heat exchangers.As shown in Figure 3, Figure 4, band spiral-flow type of the invention
Six potted flower panel heat exchanger shell pass thermo parameters methods are more uniform, and flowing and the heat transfer for effectively reducing baffling back are dead
Area improves heat transfer effect.The six potted flower panel heat exchanger unit pressure drop coefficient of heat transfer of spiral-flow type exchanges heat than common segmental baffle
Device improves 43.7%.
Embodiment 2
The basic structure of heat exchanger is arranged with embodiment 1, unlike: every piece of lattice board and shell side cross section are in 45 degree of angles.
It is all the same for the segmental baffle board heat exchangers baffle(s) spacing of comparison, number of tubes and layout.
Test result is shown: six potted flower panel heat exchanger shell pass pressure drop ratio segmental baffle board heat exchangers of spiral-flow type reduce
42.5%.The six potted flower panel heat exchanger unit pressure drop coefficient of heat transfer of spiral-flow type improves 62.1% than common segmental baffle board heat exchangers.
Embodiment 3
The basic structure of heat exchanger is arranged with embodiment 1, unlike: every piece of lattice board and shell side cross section are in 60 degree of angles.
It is all the same for the segmental baffle board heat exchangers baffle(s) spacing of comparison, number of tubes and layout.
Test result is shown: six potted flower panel heat exchanger shell pass pressure drop ratio segmental baffle board heat exchangers of spiral-flow type reduce
65.3%.The six potted flower panel heat exchanger unit pressure drop coefficient of heat transfer of spiral-flow type improves 32% than common segmental baffle board heat exchangers.It should
Six potted flower panel heat exchanger traverse baffle blade of spiral-flow type is changed in 60 ° of angle ratios in unit pressure drop the case where 45° angle with shell side cross section
Hot coefficient is because of the increase with angle, although pressure drop further declines the flow-disturbing that baffle plate rises compared to having dropped
With the ability decline of manufacture eddy flow, shell-side fluid reduces the coefficient of heat transfer transversal flow reduced capability of pipe.Therefore it revolves
Six potted flower panel heat exchanger traverse baffle blade of streaming and shell side cross section institute it is angled exist an optimum value, this optimum value and
The spacing of baffle plate, baffle plate established angle, pipe arrangement have relationship.
Embodiment 4
The basic structure of heat exchanger is arranged with embodiment 1, unlike: every piece of lattice board and shell side cross section are in 45 degree of angles, phase
Adjacent two groups of baffle plates are successively rotated clockwise using the central axis of heat exchanger as the center of circle to be staggered 15 degree.
It is all the same for the segmental baffle board heat exchangers baffle(s) spacing of comparison, number of tubes and layout.Test result is aobvious
Show: six potted flower panel heat exchanger shell pass pressure drop ratio segmental baffle board heat exchangers of spiral-flow type reduce by 45%.Six potted flower panel of spiral-flow type is changed
The hot device unit pressure drop coefficient of heat transfer improves 67.3% than common segmental baffle board heat exchangers.
Embodiment 5
The basic structure of heat exchanger is arranged with embodiment 1, unlike: every piece of lattice board and shell side cross section are in 45 degree of angles, phase
Adjacent lattice board is staggered 30 degree.
It is all the same for the segmental baffle board heat exchangers baffle(s) spacing of comparison, number of tubes and layout.Test result is aobvious
Show: six potted flower panel heat exchanger shell pass pressure drop ratio segmental baffle board heat exchangers of spiral-flow type reduce by 47.4%.Six potted flower panel of spiral-flow type
The heat exchanger unit pressure drop coefficient of heat transfer improves 71.2% than common segmental baffle board heat exchangers.
Claims (7)
1. a kind of heat exchanger with spiral-flow type lattice board, including cylinder, left pipe box and right pipe box are connected to cylinder both ends
It is provided with shell-side fluid import and shell side fluid outlet on left tube sheet and right tube plate, on cylinder, several heat exchange are provided in cylinder
Pipe, both ends are fixedly connected on left tube sheet and right tube plate；Several parallel pull rods are additionally provided in cylinder, one end of pull rod is solid
Due on the tube sheet of side；Distance sink tube is placed on pull rod, is connected with the coaxial baffle plate of several groups on distance sink tube, every group of baffle plate by
5 ~ 8 pieces of lattice boards compositions being disposed in parallel relation to one another, the fanning strip that every piece of lattice board is 45 ~ 75 degree of central angle, every piece of lattice board and
Shell side cross section is in 10 ~ 80 degree of angles.
2. heat exchanger according to claim 1, which is characterized in that the lattice board of every group of baffle plate is central angle size
Identical fanning strip.
3. heat exchanger according to claim 2, which is characterized in that the two adjacent groups baffle plate is not overlapped in the axial direction,
When installation, using the central axis of heat exchanger as the center of circle, later group baffle plate revolves clockwise or counterclockwise relative to previous group baffle plate
The fan-shaped central angle degree for turning 5 degree ~ mono- piece lattice board, makes two groups of adjacent baffle plates mutually be staggered.
4. heat exchanger according to claim 1, which is characterized in that the distance between described two adjacent groups baffle plate is cylinder
The 30%-60% of diameter.
5. heat exchanger according to claim 1, which is characterized in that every group of baffle plate has 5-7 block lattice board.
6. heat exchanger according to claim 1, which is characterized in that the radius of baffle plate and the radius of cylinder are suitable.
7. heat exchanger according to claim 1, which is characterized in that several holes are provided on the lattice board, so as to change
Heat pipe, pull rod and distance sink tube run through, and lattice board contacts fixation with distance sink tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576366.7A CN109253637A (en) | 2017-07-14 | 2017-07-14 | A kind of heat exchanger with spiral-flow type lattice board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576366.7A CN109253637A (en) | 2017-07-14 | 2017-07-14 | A kind of heat exchanger with spiral-flow type lattice board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253637A true CN109253637A (en) | 2019-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710576366.7A Pending CN109253637A (en) | 2017-07-14 | 2017-07-14 | A kind of heat exchanger with spiral-flow type lattice board |
Country Status (1)
| Country | Link |
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| CN (1) | CN109253637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668453A (en) * | 2019-02-16 | 2019-04-23 | 石维涛 | A kind of gas transmission station heat-exchanger rig |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852513U (en) * | 2010-11-02 | 2011-06-01 | 南京德邦金属装备工程有限公司 | Variable angle baffle heat exchanger |
| CN202255051U (en) * | 2011-09-16 | 2012-05-30 | 茂名重力石化机械制造有限公司 | Discontinuous multi-helical flow baffle shell-and-pipe heat exchanger |
| CN102735093A (en) * | 2012-06-29 | 2012-10-17 | 中广核工程有限公司 | Shell-and-tube heat exchanger |
| CN102878830A (en) * | 2012-09-21 | 2013-01-16 | 淄博万昌化工设备有限公司 | Shell-and-tube heat exchanger provided with blade type clapboards |
| CN104359344A (en) * | 2014-11-11 | 2015-02-18 | 无锡蓝海工程设计有限公司 | S-shaped baffle plate heat exchanger |
| CN206094996U (en) * | 2016-05-30 | 2017-04-12 | 江汉大学 | Shell -and -tube heat exchanger |
-
2017
- 2017-07-14 CN CN201710576366.7A patent/CN109253637A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852513U (en) * | 2010-11-02 | 2011-06-01 | 南京德邦金属装备工程有限公司 | Variable angle baffle heat exchanger |
| CN202255051U (en) * | 2011-09-16 | 2012-05-30 | 茂名重力石化机械制造有限公司 | Discontinuous multi-helical flow baffle shell-and-pipe heat exchanger |
| CN102735093A (en) * | 2012-06-29 | 2012-10-17 | 中广核工程有限公司 | Shell-and-tube heat exchanger |
| CN102878830A (en) * | 2012-09-21 | 2013-01-16 | 淄博万昌化工设备有限公司 | Shell-and-tube heat exchanger provided with blade type clapboards |
| CN104359344A (en) * | 2014-11-11 | 2015-02-18 | 无锡蓝海工程设计有限公司 | S-shaped baffle plate heat exchanger |
| CN206094996U (en) * | 2016-05-30 | 2017-04-12 | 江汉大学 | Shell -and -tube heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668453A (en) * | 2019-02-16 | 2019-04-23 | 石维涛 | A kind of gas transmission station heat-exchanger rig |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190122 |