CN105202948B - A kind of adverse current type helical baffles U-tube bundle heat exchanger - Google Patents
A kind of adverse current type helical baffles U-tube bundle heat exchanger Download PDFInfo
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- CN105202948B CN105202948B CN201510663050.2A CN201510663050A CN105202948B CN 105202948 B CN105202948 B CN 105202948B CN 201510663050 A CN201510663050 A CN 201510663050A CN 105202948 B CN105202948 B CN 105202948B
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Abstract
A kind of adverse current type helical baffles U-tube bundle heat exchanger, is made up of U-tube beam core body, housing and hydroecium；The U-tube beam core body is made up of U-tube beam, spiral baffling board component, tube sheet, casing tube of tension rod component, longitudinal divider；The spiral baffling board component two semi-cylindrical regions up and down all respectively by one group of flat board discount vibram outlet shape deflection plate and one group by tilting section and or so be folded flat arc end strip baffle groups that section constitutes into；Two groups of deflection plates are provided with the overlay region of an array of pipes.The present invention can overcome normal spiral deflection plate to be difficult to numerous disadvantages of the structural limitation and segmental baffle board heat exchangerses for being arranged in semi-cylindrical space, solve and arrange spiral baffling board channel to realize the problem of adverse current type U-tube bundle heat exchanger in semi-cylindrical space, have the advantages that heat transfer coefficient height, flow resistance are smaller.
Description
Technical field
The present invention relates to a kind of U-tube bundle heat exchanger, especially a kind of adverse current type helical baffles U-tube bundle heat exchanger.
Background technology
U-tube bundle heat exchanger is the principal mode of HTHP heat exchanger.It is for example with the feed-water heater of U-tube beam
The visual plant of power plant system, particularly high-pressure heater are also cooled down except steam condensation section with built-in superheated steam
Section and hydrophobic cooling section, because the steam cooling section and hydrophobic cooling section in feed-water heater are located at the turnover of U-tube beam respectively
Mouth section, it is therefore necessary to carry out countercurrent flow.Currently used structure is segmental baffle passage mostly, there are flowing dead
Area, heat transfer coefficient is relatively low, and drag losses is larger and the defect such as easy induced vibration and fouling.Due to above-mentioned steam cooling section and dredge
The region of water cooling section is all semi-cylindrical, thus the knot of the common spiral baffle heat exchanger deployed with cylindrical space
Structure can not be applied.
Existing spiral baffle heat exchanger is all arranged in cylindrical space, and the axis around cylinder deploys spiral shell
Eddy flow is moved, but needs to be divided into two semi-cylindricals for adverse current type U-tube bundle heat exchanger, respectively around the two of U-tube beam
Group straight length pipe leg expansion flowing heat transfer.In view of the defect that segmental baffle is present, is intended in semi-cylindrical arrange spiral baffling
Plate, it is necessary to abandon the traditional thinking mode on helical flow.
For adverse current U-tube beam, it is thus proposed that a kind of U-shaped pipe heat exchanger of shape of a hoof continuous helical deflecting plate, it is thought
Road is that two groups of straight length pipe legs of U-tube beam are separately positioned in two cylindrical cylinders, using continuous helical deflecting plate
To shell fluid augmentation of heat transfer, then two cylinders are connected with the bend pipe with cylinder same diameter.But the invention is but
The problem of how realizing poling have ignored.
The content of the invention
The helical baffles U-tube bundle heat exchanger of adverse current type heat transfer can be realized it is an object of the present invention to provide a kind of.
The present invention is adopted the following technical scheme that to achieve the above object：
A kind of adverse current type helical baffles U-tube bundle heat exchanger, by U-tube beam core body, housing and hydroecium with flange
Composition；Import and the shell fluid of shell fluid are respectively arranged on the housing on upper and lower half of cylinder of flange one end
Outlet, be separated into the hydroecium outlet that pipe side liquid is respectively arranged on upper and lower two spaces, the end socket of the hydroecium and
The import of pipe side liquid；The U-tube beam core body is by U-tube beam, spiral baffling board component, tube sheet, casing tube of tension rod component, longitudinal direction
Demarcation strip is constituted；One end of the longitudinal divider length direction connects with tube sheet, and the other end presses close to U-tube beam bend loss, its
Sealing strip is equipped with two sides of width, is connected with the inwall of housing, the longitudinal divider can be by the inside of housing
Two semi-cylindrical spaces above and below being separated into, two semi-cylindrical spaces up and down are communicated at the bend pipe end of U-tube beam；
Characterized in that, the spiral baffling board component is by one group of discount vibram outlet shape deflection plate and one group of arc end strip deflection plate
Composition；Two groups of deflection plates are arranged above and below, and discount vibram outlet shape deflection plate and arc end strip deflection plate are spaced, arc end strip folding
The discount vibram outlet height of the width and discount vibram outlet shape deflection plate that flow plate is that 1/2nd deflection plates projection radius of circle subtracts 1/2nd longitudinal directions
Separate plate thickness along with 1/2nd pipes arrange spacing, both is included the overlay region of an array of pipes；In upper semicylindrical space
During arrangement, discount vibram outlet shape deflection plate is upper, and arc end strip deflection plate is under；Conversely, when being arranged in lower semicylindrical space, discount vibram outlet
Shape deflection plate is under, and arc end strip deflection plate is upper；The discount vibram outlet shape deflection plate is flat board, and the plate face of its working condition is vertical
In the axis of heat exchanger, the pore of its surface distributed is vertical with plate face；The arc end strip deflection plate is divided into three parts, in
Portion is tilting section, the plate face normal of its working condition and the inclination angle that the angle of heat exchanger axis is deflection plate, its surface distributed
Pore and plate face also have identical inclination angle, its left and right ends is respectively the flat section of left folding and the flat section of right folding, and both plate faces are hung down
Directly in the axis of heat exchanger, the pore of its surface distributed is vertical with plate face；Three sections of the arc end strip deflection plate pass through
Bending method is formed；The spiral baffling board component is connected integrally by casing tube of tension rod component and tube sheet；U-tube beam every
Two pipe legs of U-tube be all each passed through above and below two groups of spiral baffling board components and tube sheet corresponding pore；Thus it can be formed inverse
Respectively around the helical duct of two semi-cylindrical space arrangements up and down in flow pattern helical baffles U-tube bundle heat exchanger.
Compared with prior art, the invention has the advantages that：
1st, one group of discount vibram outlet shape deflection plate and one group of arc end strip is respectively adopted in two groups of straight lengths of U-tube beam by the present invention
Deflection plate constitutes the passage for making fluid carry out helical flow around its straight length tube bank arranged in semi-cylindrical space；Above-mentioned two
The oblique flow that the middle part tilting section composition sectional area of adjacent two pieces of arc ends strip deflection plate of group deflection plate is basically unchanged is led to
Road, the middle part of adjacent two pieces of discount vibram outlets shape deflection plate constitutes the main thoroughfare perpendicular to tube bank flowing part, and its two ends respectively with
The section laminating that is folded flat of adjacent two pieces of arc ends strip deflection plate constitutes the transition passage that part is flowed perpendicular to tube bank；Thus
Fluid can realize a kind of spiroid flowing of similar spiral stair activity in above-mentioned passage, so as to by semicolumn
Shape area of space arranges above-mentioned spiral baffling board channel, realizes the task of the helical flow countercurrent heat-transfer in U-tube bundle heat exchanger.
The present invention handles above-mentioned two pieces of differences using effective circumferentially overlapping technology is proved in spiral baffle heat exchanger
The connection of the deflection plate of shape, makes discount vibram outlet shape deflection plate and arc end strip deflection plate pass through an array of pipes adjacent is overlapping,
It is easy to the installation of deflection plate to fix, the casing tube of tension rod component of overlay region can compress discount vibram outlet shape deflection plate and arc end strip folding simultaneously
Plate is flowed, an array of pipes of overlay region arrangement is conducive to suppressing the negative effect such as reverse leakage.The present invention both overcomes normal spiral
Baffle arrangement (including four points, three points and heat exchanger with continuous helical baffle plates) can only be arranged in the limitation in cylindrical space,
Can avoid having in convenient arc baffling board channel again flow dead, because flow direction is continually changing and flow resistance is larger, breach
It is 2 times to locate support distances, the disadvantage such as easy induced vibration and fouling, and plays spiral baffling board channel heat transfer coefficient height, flowing resistance
The advantages of power is small.
2nd, structure of the present invention is by can be real under less flow resistance by angle of inclination reasonable in design or pitch
Existing augmentation of heat transfer.For high-pressure power plant feed-water heater, because steam cooling section and hydrophobic cooling section are all single
Phase diabatic process, the shell-side coefficient of heat transfer is related to flowing Reynolds number, both wishes augmentation of heat transfer, and larger flowing resistance can not be caused again
Power.Because the resistance of superheated steam cooling section is big will to reduce condensation section phase transition temperature, make high-pressure feed-water heater heat transfer temperature
Subtractive is small and the economy of Power Plant is deteriorated；Hydrophobic cooling section then must but walk shell because its volume flow is relatively small
Wing passage, thus it is relatively difficult to its augmentation of heat transfer in traditional scheme.
3rd, the manufacturing process of the present invention program is also relatively simple compared with other helical baffles, by more difficult inclination baffling
The manufacture of plate is focused on one group of arc end strip deflection plate, and discount vibram outlet shape deflection plate uses manufacture more conveniently flat board.
Brief description of the drawings
Fig. 1 is the schematic diagram of adverse current type helical baffles U-tube bundle heat exchanger of the embodiment of the present invention；
Fig. 2 is the upper semicylindrical spatially spiral deflection plate and the schematic diagram of tube bank arrangement of the embodiment of the present invention；
Fig. 3 is the lower semicylindrical spatially spiral deflection plate and the schematic diagram of tube bank arrangement of the embodiment of the present invention；
Fig. 4 is the discount vibram outlet shape deflection plate deflection plate schematic diagram of the embodiment of the present invention；
Fig. 5 is the arc end strip deflection plate schematic diagram of the embodiment of the present invention.
Embodiment
Embodiment：
A kind of adverse current type helical baffles U-tube bundle heat exchanger, the and of housing 2 by U-tube beam core body 1, with flange 2-3
Hydroecium 3 is constituted；The import 2- of shell fluid is respectively arranged on the housing 2 on upper and lower half of cylinder of flange 2-3 one end
It is separated on upper and lower two spaces, the end socket of the hydroecium 3 and is respectively arranged in the 1 and outlet 2-2 of shell fluid, the hydroecium 3
The outlet 3-2 and the import 3-1 of pipe side liquid of pipe side liquid；The U-tube beam core body 1 is by U-tube beam 1-1, helical baffles
Component 1-2, tube sheet 1-3, casing tube of tension rod component 1-4, longitudinal divider 1-5 compositions；The longitudinal divider 1-5 length directions
One end connects with tube sheet, and the other end, which is pressed close on U-tube beam bend loss, two sides of its width, is equipped with sealing strip, with shell
The inwall of body 2 connects, the longitudinal divider 1-5 inside of housing 2 can be separated into above and below two semi-cylindrical spaces, it is described
Two semi-cylindrical spaces are communicated at the bend pipe end of U-tube beam up and down；
Characterized in that, the spiral baffling board component 1-2 is by one group of discount vibram outlet shape deflection plate 1-2-1 and one group of arc end bar
Shape deflection plate 1-2-2 is constituted；Two groups of deflection plates are arranged above and below, and discount vibram outlet shape deflection plate 1-2-1 and arc end strip deflection plate 1-
2-2 is spaced, and arc end strip deflection plate 1-2-2 width and discount vibram outlet shape deflection plate 1-2-1 discount vibram outlet height be two/
One deflection plate projection radius of circle subtracts 1/2nd longitudinal divider 1-5 thickness along with 1/2nd pipes arrange spacing, makes both
Include the overlay region of an array of pipes；When being arranged in upper semicylindrical space, discount vibram outlet shape deflection plate 1-2-1 is in upper, arc end strip
Deflection plate 1-2-2 is under；Conversely, when being arranged in lower semicylindrical space, discount vibram outlet shape deflection plate 1-2-1 is under, arc end strip
Deflection plate 1-2-2 is upper；The discount vibram outlet shape deflection plate 1-2-1 is flat board, the axle of the plate face of its working condition perpendicular to heat exchanger
Line, the pore of its surface distributed is vertical with plate face；The arc end strip deflection plate 1-2-2 is divided into three parts, and middle part is to incline
Oblique section 1-2-2-2, the plate face normal of its working condition and the inclination angle that the angle of heat exchanger axis is deflection plate, its surface distributed
Pore and plate face also have identical inclination angle, its left and right ends is respectively the flat section 1-2-2-1 of left folding and the flat section 1-2-2- of right folding
3, both plate faces are perpendicular to the axis of heat exchanger, and the pore of its surface distributed is vertical with plate face；The arc end strip folding
Three sections of stream plate 1-2-2 are formed by bending method；Tilting section 2-1 projected length l and angle of inclination beta and thickness of slab δ is determined
The pitch p (δ of p=ltan β+2) of helical baffles；The spiral baffling board component 1-2 is by casing tube of tension rod component 1-4 and tube sheet 1-
3 are connected integrally；Two pipe legs of the U-tube beam 1-1 per single u-shaped pipe be all each passed through above and below two groups of spiral baffling board components
1-2 and tube sheet 1-3 corresponding pore；Thus it can be formed above and below being surrounded respectively in adverse current type helical baffles U-tube bundle heat exchanger
The helical duct of two semi-cylindrical space arrangements.
Exemplified by being arranged by shell-side upper semicylindrical space, such as Fig. 2, fluid is entered into and through by two pieces of arc end bars from right side
Turned back upwards after the ramp way of shape deflection plate 1-2-2 formation and enter into and through what is formed by two pieces of discount vibram outlet shape deflection plate 1-2-1
Passage, the ramp way formed into another layer by two pieces of arc end strip deflection plate 1-2-2 of then turning back still further below, thus not
Disconnected repetitive cycling, makes fluid realize a kind of helical flow along winding staircase shape passage.
Claims (1)
1. a kind of adverse current type helical baffles U-tube bundle heat exchanger, by U-tube beam core body (1), the housing with flange (2-3)
(2) constituted with hydroecium (3)；On the housing (2) shell-side is respectively arranged on upper and lower half of cylinder of flange (2-3) one end
Upper and lower two spaces, the water are separated into the import (2-1) of fluid and the outlet (2-2) of shell fluid, the hydroecium (3)
The outlet (3-2) of pipe side liquid and the import (3-1) of pipe side liquid are respectively arranged on the end socket of room (3)；The U-tube beam core body
(1) by U-tube beam (1-1), spiral baffling board component (1-2), tube sheet (1-3), casing tube of tension rod component (1-4), longitudinal divider
(1-5) is constituted；One end of longitudinal divider (1-5) length direction connects with tube sheet, and the other end presses close to U-tube beam bend pipe
Sealing strip is equipped with section, two sides of its width, is connected with the inwall of housing (2), the longitudinal divider (1-5) can
By the inside of housing (2) be separated into above and below two semi-cylindrical spaces, it is described up and down two semi-cylindrical spaces in U-tube beam
Bend pipe end is communicated；
Characterized in that, the spiral baffling board component (1-2) is by one group of discount vibram outlet shape deflection plate (1-2-1) and one group of arc end bar
Shape deflection plate (1-2-2) is constituted；Two groups of deflection plates are arranged above and below, and discount vibram outlet shape deflection plate (1-2-1) and arc end strip baffling
Plate (1-2-2) is spaced, and the width of arc end strip deflection plate (1-2-2) and the discount vibram outlet of discount vibram outlet shape deflection plate (1-2-1) are high
It is that 1/2nd deflection plates projection radius of circle subtracts 1/2nd longitudinal dividers (1-5) thickness along with 1/2nd pipes are arranged
Spacing, makes both include the overlay region of an array of pipes；When being arranged in upper semicylindrical space, discount vibram outlet shape deflection plate (1-2-1) exists
On, arc end strip deflection plate (1-2-2) is under；Conversely, when being arranged in lower semicylindrical space, discount vibram outlet shape deflection plate (1-2-
1) under, arc end strip deflection plate (1-2-2) is upper；The discount vibram outlet shape deflection plate (1-2-1) is flat board, its working condition
Plate face is perpendicular to the axis of heat exchanger, and the pore of its surface distributed is vertical with plate face；The arc end strip deflection plate (1-2-
2) it is divided into three parts, middle part is tilting section (1-2-2-2), and the plate face normal of its working condition and the angle of heat exchanger axis are folding
The inclination angle of plate is flowed, pore and the plate face of its surface distributed also have identical inclination angle, and its left and right ends is respectively the flat section of left folding
(1-2-2-1) and the flat section of right folding (1-2-2-3), both plate faces are perpendicular to the axis of heat exchanger, and the pore of its surface distributed is equal
It is vertical with plate face；Three sections of the arc end strip deflection plate (1-2-2) are formed by bending method；The helical baffles group
Part (1-2) is connected integrally by casing tube of tension rod component (1-4) and tube sheet (1-3)；U-tube beam (1-1) is per the two of single u-shaped pipe
Bar pipe leg be all each passed through above and below two groups of spiral baffling board components (1-2) and tube sheet (1-3) corresponding pore；Thus it can be formed inverse
Make stream around the helical duct of two semi-cylindrical space arrangements up and down respectively in flow pattern helical baffles U-tube bundle heat exchanger
Body realizes a kind of helical flow along winding staircase shape passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663050.2A CN105202948B (en) | 2015-10-14 | 2015-10-14 | A kind of adverse current type helical baffles U-tube bundle heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663050.2A CN105202948B (en) | 2015-10-14 | 2015-10-14 | A kind of adverse current type helical baffles U-tube bundle heat exchanger |
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| Publication Number | Publication Date |
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| CN105202948A CN105202948A (en) | 2015-12-30 |
| CN105202948B true CN105202948B (en) | 2017-11-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339535A (en) * | 2016-08-20 | 2017-01-18 | 哈尔滨锅炉厂有限责任公司 | Method for calculating pore diameter of in-built throttling pore plate of U-shaped tube type heat exchanger |
| MX2020002109A (en) | 2017-08-28 | 2020-12-10 | Watlow Electric Mfg | Continuous helical baffle heat exchanger. |
| CN109974479A (en) * | 2019-04-28 | 2019-07-05 | 浙江康利德科技有限公司 | Case tube heat exchanger |
| CN113513930A (en) * | 2021-06-16 | 2021-10-19 | 河海大学 | High-temperature phase-change shell-and-tube heat exchanger |
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|---|---|---|---|---|
| CN201561682U (en) * | 2009-12-04 | 2010-08-25 | 山东美陵化工设备股份有限公司 | Vertical condenser with double inclined baffle plates |
| CN203224169U (en) * | 2013-01-21 | 2013-10-02 | 英特换热设备(浙江)有限公司 | Spiral baffle plate |
| CN103398624A (en) * | 2013-07-10 | 2013-11-20 | 西安交通大学 | Caracole-type zigzag-plane baffle plate shell-and-tube heat exchanger |
| CN104061674A (en) * | 2014-07-14 | 2014-09-24 | 东南大学 | Spiral baffle plate electric heater for annular tubing of units shaped like inclined Chinese character 'ri' |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015121381A (en) * | 2013-12-25 | 2015-07-02 | 株式会社東芝 | Heat exchange device and power generating system |
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2015
- 2015-10-14 CN CN201510663050.2A patent/CN105202948B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561682U (en) * | 2009-12-04 | 2010-08-25 | 山东美陵化工设备股份有限公司 | Vertical condenser with double inclined baffle plates |
| CN203224169U (en) * | 2013-01-21 | 2013-10-02 | 英特换热设备(浙江)有限公司 | Spiral baffle plate |
| CN103398624A (en) * | 2013-07-10 | 2013-11-20 | 西安交通大学 | Caracole-type zigzag-plane baffle plate shell-and-tube heat exchanger |
| CN104061674A (en) * | 2014-07-14 | 2014-09-24 | 东南大学 | Spiral baffle plate electric heater for annular tubing of units shaped like inclined Chinese character 'ri' |
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