CN2597932Y - Spiral deflection pipe-plate case type heat exchanger with central pipe - Google Patents
Spiral deflection pipe-plate case type heat exchanger with central pipe Download PDFInfo
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- CN2597932Y CN2597932Y CNU032199155U CN03219915U CN2597932Y CN 2597932 Y CN2597932 Y CN 2597932Y CN U032199155 U CNU032199155 U CN U032199155U CN 03219915 U CN03219915 U CN 03219915U CN 2597932 Y CN2597932 Y CN 2597932Y
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Abstract
A spiral baffle plate shell and tube heat exchanger with a central pipe relates to an improved shell and tube heat exchanger, in particular a large heat exchanger in industrial production, which comprises a fixed tube sheet, a spacer pipe, a spiral baffle plate, a central pipe, a heat exchanging tube bundle and a float pipe sheet, wherein, the spacer pipe, the central pipe, the heat exchanging pipe and the spiral baffle plate are located between the fixed tube sheet and the float pipe sheet, the spacer pipe and the heat exchanging pipe go through the spiral baffle plate, with two ends being respectively connected with the fixed tube sheet and the float pipe sheet, the spiral baffle plate is fixed with the spacer pipe, and the central pipe is located on the axis line of the spiral baffle plate. The approximate spiral distribution of the spiral baffle plate ensures that the shell side fluid can conduct continuous and stable piston spiral move, avoiding the problem that the traditional tube and shell heat exchanger is apt to cause short of the flow field and viscous flow dead zone and so on, and thus the utility model not only reduces the shell pressure, but also improves the heat exchanging factor at the same time, thereby deserving popularizing in the industrial field particularly the petrochemical industry, and possessing a wide market prospect.
Description
One, technical field
The utility model patent relates to a kind of improved shell-and-tube heat exchanger, especially a kind of medium-and-large-sized heat exchanger of industrial production that is applicable to.
Two, background technology
Heat exchanger is a kind of important unit operating equipment of industrial departments such as oil refining, chemical industry, the energy, accounts for usually about the 35-40% of a total equipment investment of oil plant.And shell-and-tube heat exchanger is a kind of heat transmission equipment that is most widely used in the present Chemical Manufacture, and its consumption accounts for 90% of whole heat transmission equipments.Segmental baffle board heat exchangers is modal shell-and-tube heat exchanger structure, and deflection plate plays a part to change the shell-side fluid flow direction and supports tube bank in this class heat exchanger.The major defect of this deflection plate is: (1) thus fluid vertical impact shell wall side has caused bigger losing along stroke pressure; (2) there is bigger viscous flow dead band in the position that is connected with housing, wall of deflection plate, causes the back-mixing of fluid easily, has reduced heat transfer efficiency, and increases shell side incrustation; (3) high-velocity fluid laterally skims over heat exchanger tube, induces the oscillation crosswise of tube bank easily, and causes mouth of pipe cracking and leakage.Thereby no matter from energy-saving consumption-reducing still from the angle of security of operation, all press for this traditional baffle arrangement form improved.
Three, technology contents
1, technical problem
The purpose of this utility model is that the shell fluid that makes shell-and-tube heat exchanger realizes continuously, the screw of piston-shaped, propose a kind of employing central tube and strengthened the shell fluid disturbance, eliminate the hoop " stagnant area " in common helical deflecting plate pipe and shell type heat exchanger shell side centre, reach the helical deflecting plate pipe and shell type heat exchanger of the band central tube of the purpose that improves heat transfer efficiency and reduce flow resistance by this.
2, technical scheme
A kind of helical deflecting plate pipe and shell type heat exchanger with central tube, formed by heat-exchange tube and fixture, it is characterized in that this heat exchanger comprises fixed tube sheet, distance sink tube, helical baffles, central tube, heat-exchanging tube bundle, floating tubesheet, between fixed tube sheet and floating tubesheet, be provided with distance sink tube, central tube, heat-exchanging tube bundle, reach helical baffles, distance sink tube and heat-exchanging tube bundle pass helical baffles, its two is connected with floating tubesheet with fixed tube sheet respectively, helical baffles and distance sink tube fix, and central tube is positioned on the axial line of helical baffles; Pass between the helixangle of helical baffles, diameter D, the pitch length H three is H=π Dtg β, and wherein helixangle is between 10 °～80 °; Helical baffles is spliced by some fan-shaped flat boards, and each fan-shaped flat board can overlap mutually, also can at interval certain distance; Helical baffles is formed the double helix deflection plate by two groups of deflection plates, forms the double helix passage; Heat-exchanging tube bundle is made up of shape tube, and this shape tube comprises internally finned tube and external finned tube, spiral fluted tube, spiral inner rib plate pipe, helical bellows, band pipe, porous surface heat-exchanging tube; Shape tube in the heat-exchanging tube bundle arrange into, arrange with concentric circles annular; Central tube is a pipe at shell-and-tube heat exchanger center, and its diameter is 5%～30% of a shell-and-tube heat exchanger diameter of the housing.
3, technique effect
1) the approximate spiral of deflection plate distributes and makes shell fluid piston-shaped screw stably continuously, has avoided problems such as flow field short circuit that the conventional tube shell heat exchanger forms easily and viscous flow dead band, and shell-side pressure drop is reduced, and the coefficient of heat transfer is improved simultaneously.
2) existence of central tube has strengthened flowing of shell-side fluid greatly in the housing, if adopt the abnormity tube bank then can further strengthen the heat-transfer capability of tube side fluid simultaneously.
3) the processed complex degree of spiral baffle heat exchanger is compared with the conventional tube shell heat exchanger and be there is no obvious raising, but its heat-transfer capability under equal pressure drop obviously improves, all can consider to use instead the spiral baffle heat exchanger of the band central tube that the utility model proposes in the occasion that can use shell-and-tube heat exchanger, thereby the spiral baffle heat exchanger that the utility model proposes is to be worth especially a kind of product of promoting of petrochemical industry circle of industrial quarters, has vast market prospect.
Four, description of drawings
Accompanying drawing 1 is a structural representation of the present utility model; Comprising fixed tube sheet 1, distance sink tube 2, helical baffles 3,4, central tube 5, heat-exchanging tube bundle 6, floating tubesheet 7;
Fig. 2 is the structural representation of the utility model a slice deflection plate;
Fig. 3 is the utility model single-screw access diagram;
Fig. 4 is the utility model double helix access diagram;
Fig. 5 is the light pipe schematic diagram;
Fig. 6 is the spiral grooved tube schematic diagram;
Fig. 7 is the helical bellows schematic diagram;
Fig. 8 is the schematic diagram of spiral inner rib plate pipe;
Fig. 9 is special-shaped spiral grooved tube schematic diagram.
Five, the specific embodiment
The purpose of this utility model realizes in the following manner: described spiral baffle heat exchanger is by fixed tube sheet 1, distance sink tube 2, helical baffles 3,4, central tube 5, heat-exchanging tube bundle 6 and floating tubesheet 7 (also can be another piece fixed tube sheets, form down together), heat-exchanging tube bundle 6 places between fixed tube sheet 1 and the floating tubesheet 7.Described heat-exchanging tube bundle 6 can be light pipe or various special pipe.Also be equipped with helical baffles 3,4 between fixed tube sheet 1 and floating tubesheet 7, heat-exchanging tube bundle 6 passes helical baffles 3,4, and fixing with spacing bar 2.Described deflection plate 3,4 is a helical baffles, and its characteristic parameter is helixangle and (housing) diameter D, and a pitch length is H (=π Dtg β).Described helical baffles 3,4 is spliced by continuously whole plate, forms single-screw or double helix passage.Described central tube 5 is pipes that are fixed in the housing center, and its diameter is the 5%-30% of housing internal diameter and is advisable with about 10%.Described central tube 5 used metals are carbon steel, stainless steel, non-ferrous metal and alloy.
Described heat-exchanging tube bundle 6 can be light pipe or various special pipe.Described abnormity tube bank mainly is meant various passive enhanced tubes, as rough surface, extended surface tube etc., especially refers to helical groove heat exchange pipe.
When described heat-exchanging tube bundle 6 is special pipe, mainly comprise internally finned tube and external finned tube.The material of fin can be carbon steel, stainless steel, non-ferrous metal and alloy, and it is realized with methods such as can using tight fit, winding, bonding, welding, cold and hot pressure being connected of pipe.Described fin can be axially or radially, principal mode comprises spiral fluted tube, spiral inner rib plate pipe, helical bellows, band pipe, porous surface heat-exchanging tube etc.
Arranging of described heat-exchanging tube bundle 6 can be triangle stringing, corner triangle stringing, square stringing, corner square stringing etc., is arranged as the best with donut.
Described heat exchanger can be versions such as fixed tube-sheet exchanger, movable tube sheets heat exchanger, U-shaped heat exchange of heat pipe.
Described helical baffles 3,4 is spliced by some fan-shaped flat boards, and 4 deflection plate projections form a full circle.The helical angle of described helical baffles 3,4 is between 10 °-80 °, and should be advisable with about 35 °-40 °.
Described helical baffles 3,4 can overlap mutually and form, and also can keep at a certain distance away by two adjacent two plates.The helical duct that described helical baffles 3 is formed can be single-screw or double helix passage.
Can be clear that the primary structure of the helical deflecting plate pipe and shell type heat exchanger of band central tube from accompanying drawing 1: fixed tube sheet 1, distance sink tube 2, helical baffles 3,4, central tube 5, heat pipe bundle 6 and floating tubesheet 7.
Central tube 5 and heat-exchanging tube bundle 6 place between fixed tube sheet 1 and the floating tubesheet 7, also are equipped with helical baffles 3,4 between fixed tube sheet 1 and floating tubesheet 7, and heat-exchanging tube bundle 6 passes helical baffles 3,4, and fixing with spacing bar 2.Described heat-exchanging tube bundle 6 comprises light pipe and various abnormity tube bank, mainly comprises spiral fluted tube, spiral inner rib plate pipe, helical bellows, band pipe, porous surface heat-exchanging tube etc., and its material can be metals such as stainless steel, carbon steel.In a pitch scope, 4 segmental baffles are formed approximate level and smooth helical duct, and segmental baffle can overlap mutually, also can space one segment distance.The formed passage of described helical baffles can be single-screw or double helix passage.The utility model can be used as the substitute products of conventional tube shell heat exchanger, all can consider to use instead the helical deflecting plate pipe and shell type heat exchanger of the band central tube that the utility model proposes in the occasion that can use shell-and-tube heat exchanger.
Accompanying drawing 2 has provided the structural representation of helical baffles.As seen the projection of each segmental baffle is 1/4 full circle, and its processing can make cutter platform or anchor clamps rotate a certain angle and process after (helical angle).
The deployment scenarios of segmental baffle 3,4 when accompanying drawing 3 has provided the single-screw passage.Deflection plate forms an approximate level and smooth helical duct successively at the position overlap joint that is connected with housing.Described adjacent two helical baffles also can at intervals be arranged.
The deployment scenarios of segmental baffle 3,4 when accompanying drawing 4 has provided the double helix passage.Deflection plate links to each other at two end points of segmental baffle successively, forms the approximate level and smooth helical duct of 2 directions.Described adjacent two helical baffles also can at intervals be arranged.
Accompanying drawing 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 have provided the part Pipe bundle structure sketch that the utility model adopts respectively.For the inner fin tube bank, the assembling mode of deflection plate and tube bank is as good as with helical baffles light pipe formula heat exchanger; For the external finned tube bundle, the perforate of deflection plate should be advisable with the tube bank maximum gauge.
Claims (8)
1, a kind of helical deflecting plate pipe and shell type heat exchanger with central tube, formed by heat-exchange tube and fixture, it is characterized in that this heat exchanger comprises fixed tube sheet (1), distance sink tube (2), helical baffles (3,4), central tube (5), heat-exchanging tube bundle (6), floating tubesheet (7), between fixed tube sheet (1) and floating tubesheet (7), be provided with distance sink tube (2), central tube (5), heat-exchanging tube bundle (6), and helical baffles (3,4), distance sink tube (2) and heat-exchanging tube bundle (6) pass helical baffles (3,4), its two is connected with floating tubesheet (6) with fixed tube sheet (1) respectively, helical baffles (3,4) fixed by distance sink tube (2), central tube (5) is positioned at helical baffles (3,4) on the axial line.
2, the helical deflecting plate pipe and shell type heat exchanger of band central tube according to claim 1, it is characterized in that the pass between the helixangle, diameter D, pitch length H three of helical baffles (3,4) is H=π Dtg β, wherein helixangle is between 10 °～80 °.
3, the helical deflecting plate pipe and shell type heat exchanger of band central tube according to claim 1 and 2 is characterized in that helical baffles (3,4) is spliced by some fan-shaped flat boards, and each fan-shaped flat board can overlap mutually, also can certain at interval distance.
4, the helical deflecting plate pipe and shell type heat exchanger of band central tube according to claim 1 and 2 is characterized in that helical baffles (3,4) forms single-screw or double helix deflection plate by one group or two groups of deflection plates, forms single-screw or double helix passage.
5, the helical deflecting plate pipe and shell type heat exchanger of band central tube according to claim 1, it is characterized in that heat-exchanging tube bundle (6) is made up of shape tube, this shape tube comprises internally finned tube and external finned tube, spiral fluted tube, spiral inner rib plate pipe, helical bellows, band pipe, porous surface heat-exchanging tube.
6,, it is characterized in that light pipe in the heat-exchanging tube bundle (6) or shape tube are arranged and be triangle stringing, corner triangle stringing, square stringing, corner square and donut stringing etc. according to claim 1 or 5 with the helical deflecting plate pipe and shell type heat exchanger of central tube.
7, the helical deflecting plate pipe and shell type heat exchanger of band central tube according to claim 1 is characterized in that central tube (5) is a pipe at shell-and-tube heat exchanger center, and its diameter is 5%～30% of a shell-and-tube heat exchanger diameter of the housing.
8, helical baffles special pipe beam tube shell heat exchanger according to claim 1 is characterized in that heat exchanger can be versions such as fixed tube-sheet exchanger, movable tube sheets heat exchanger, U-shaped heat exchange of heat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032199155U CN2597932Y (en) | 2003-02-18 | 2003-02-18 | Spiral deflection pipe-plate case type heat exchanger with central pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032199155U CN2597932Y (en) | 2003-02-18 | 2003-02-18 | Spiral deflection pipe-plate case type heat exchanger with central pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2597932Y true CN2597932Y (en) | 2004-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032199155U Expired - Fee Related CN2597932Y (en) | 2003-02-18 | 2003-02-18 | Spiral deflection pipe-plate case type heat exchanger with central pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131616A1 (en) * | 2007-04-26 | 2008-11-06 | Dalian Haite Oil Refining Tech | A short-circuit-proof heat-exchanger with helical baffles |
| CN100533037C (en) * | 2008-01-04 | 2009-08-26 | 华南理工大学 | Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger |
| CN102203328A (en) * | 2008-06-26 | 2011-09-28 | 方地陶有限公司 | Total anti -corrosion protection heating radiator element, and method of anti -corrosion treatment of heating radiator |
| CN106440865A (en) * | 2016-09-28 | 2017-02-22 | 华中科技大学 | Shell-and-tube heat exchanger with rotating baffle plates |
| CN109115012A (en) * | 2018-09-28 | 2019-01-01 | 南京汽轮电机集团泰兴宁兴机械有限公司 | A kind of adjustable heat exchanger and its pressure test control method |
| CN111664730A (en) * | 2020-06-08 | 2020-09-15 | 青岛畅隆电力设备有限公司 | Spiral baffle plate heat exchanger with variable-pitch spiral fluted pipe |
-
2003
- 2003-02-18 CN CNU032199155U patent/CN2597932Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131616A1 (en) * | 2007-04-26 | 2008-11-06 | Dalian Haite Oil Refining Tech | A short-circuit-proof heat-exchanger with helical baffles |
| CN100533037C (en) * | 2008-01-04 | 2009-08-26 | 华南理工大学 | Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger |
| CN102203328A (en) * | 2008-06-26 | 2011-09-28 | 方地陶有限公司 | Total anti -corrosion protection heating radiator element, and method of anti -corrosion treatment of heating radiator |
| CN102203328B (en) * | 2008-06-26 | 2014-10-15 | 方地陶有限公司 | Total anti -corrosion protection heating radiator element, and method of anti -corrosion treatment of heating radiator |
| CN106440865A (en) * | 2016-09-28 | 2017-02-22 | 华中科技大学 | Shell-and-tube heat exchanger with rotating baffle plates |
| CN109115012A (en) * | 2018-09-28 | 2019-01-01 | 南京汽轮电机集团泰兴宁兴机械有限公司 | A kind of adjustable heat exchanger and its pressure test control method |
| CN111664730A (en) * | 2020-06-08 | 2020-09-15 | 青岛畅隆电力设备有限公司 | Spiral baffle plate heat exchanger with variable-pitch spiral fluted pipe |
| CN111664730B (en) * | 2020-06-08 | 2021-11-30 | 青岛畅隆电力设备有限公司 | Spiral baffle plate heat exchanger with variable-pitch spiral fluted pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20040107 Termination date: 20100218 |