CN203349680U - Double-shell side shell-and-tube heat exchanger - Google Patents
Double-shell side shell-and-tube heat exchanger Download PDFInfo
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- CN203349680U CN203349680U CN 201320295497 CN201320295497U CN203349680U CN 203349680 U CN203349680 U CN 203349680U CN 201320295497 CN201320295497 CN 201320295497 CN 201320295497 U CN201320295497 U CN 201320295497U CN 203349680 U CN203349680 U CN 203349680U
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- shell
- tube
- tube sheet
- heat exchanger
- bobbin carriage
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Abstract
The utility model discloses a double-shell side shell-and-tube heat exchanger which comprises an outer shell, a first in-and-out port, a second in-and-out port, a third in-and-out port and a fourth in-and-out port. The two ends of the outer shell are provided with a first tube plate and a second tube plate respectively. A first heat exchanging tube is fixed on the first tube plate and the second tube plate. The outer side of the first tube plate and the outer side of the second tube plate are fixedly connected with a first tube box and a second tube box respectively. A center hole is formed in the first tube plate, and an inner shell is welded to the center hole. A first end of the inner shell extends towards the second tube plate to divide the shell side of the outer shell stroke into an outer shell side and an inner shell side. A second end of the inner shell extends out of the first tube plate, and a second end portion of the inner shell is relatively and fixedly connected with a third tube plate parallel to the second tube plate. A second heat exchanging tube is fixed on the second tube plate and the third tube plate. A plurality of spiral baffle plates are arranged on the outer wall of the inner shell, and a spiral shape is formed by the spiral baffle plates. The double-shell side shell-and-tube heat exchanger is low in flow resistance, high in heat transfer coefficient and good in stability.
Description
Technical field
The utility model relates to a kind of heat exchanger, particularly relates to a kind of heat exchanger of shell-and-tube.
Background technology
At present, shell-and-tube heat exchanger is the most widely used heat exchanger structure form in the energy project project, and its consumption accounts for 70% of whole heat exchanger consumptions, belongs to a kind of of dividing wall type heat exchanger.The characteristics of shell-and-tube heat exchanger are that heat exchanger structure is firm, use reliable; With a long history, manufacture each sport technique segment used and reached ripe; Adaptability is higher, and the scope of application is large.Traditional shell-and-tube heat exchanger shell side adopts segmental baffle to support, but arch shape traverse baffle shell type heat exchanger has following deficiency: the shell side flow field is inhomogeneous, and resistance pressure drop is large, have flow dead, easily bring out heat exchanger tube vibration, easily fouling.
For improving the heat exchanger operating efficiency to reach energy-saving and cost-reducing purpose, of paramount importance means are exactly to improve the nowed forming of its internal flow, because this factor plays decisive action to property of Pipe-shell Heat Exchanger and power consumption.Because inner heat transferring medium has multiple nowed forming, its main distinction with washing away of tube bank flowed on, so on this basis, form that can be mobile these is cross-current, longitudinal stream and spiral flow.
Helical flow is mainly to adopt helical baffles, and helical baffles is compared segmental baffle, and to have a unit pressure drop heat transfer coefficient high, good stability etc. advantage; Helical baffles has continuous helical shape baffles and Interrupted screw deflection plate; The continuous helical shape baffles difficulty of processing is large, particularly at the center that approaches shell side; And there is trigonum in the discontinuity deflection plate when overlap joint, leakage current is more serious, particularly at the center of shell side, affects like this raising of its heat transfer coefficient.
Therefore those skilled in the art are devoted to develop a kind of reliable in structure, heat exchanger that heat transfer coefficient is high.
The utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of reliable in structure, heat exchanger that heat transfer coefficient is high.
For achieving the above object, the utility model provides a kind of double-shell side shell-and-tube heat exchanger, comprises that shell, first is imported and exported, the second import and export, the 3rd are imported and exported and the 4th import and export; The two ends of described shell are respectively arranged with the first tube sheet and the second tube sheet; Be fixed with the first heat exchanger tube on described the first tube sheet and the second tube sheet; The outside of described the first tube sheet and the second tube sheet is fixed with respectively the first bobbin carriage and the second bobbin carriage; It is characterized in that: be provided with centre bore on described the first tube sheet, this central hole is welded with inner casing; The first end of described inner casing extends to described the second tube sheet, and the shell side of described shell stroke is divided into to outer shell side and interior shell side; The second end of described inner casing stretches out described the first tube sheet; The second end end of described inner casing is fixed with three tube sheet parallel in described the second tube sheet relatively; Be fixed with the second heat exchanger tube on described the second tube sheet and the 3rd tube sheet; Be provided with a plurality of helical baffles on the outer wall of described inner casing, each helical baffles forms helical form.
For ease of fixing of inner casing, between described inner casing and shell, be provided with gripper shoe.
For optimizing heat transfer effect, the second end end of described inner casing is fixed with guide shell; Described the 3rd tube sheet is fixed on the end of described guide shell; Described inner casing, guide shell and the 3rd tube sheet form a relatively independent cavity.
Preferably, described guide shell is positioned at described the first bobbin carriage; Described the first import and export are arranged on described the second bobbin carriage; Described the second import and export are arranged on described the first bobbin carriage; Described the 3rd import and export are arranged on described guide shell, and stretch out described the first bobbin carriage; Described the 4th import and export are arranged on described shell.
Preferably, described guide shell is positioned at outside described the first bobbin carriage; The arranged outside of described the 3rd tube sheet has the 3rd bobbin carriage; Described the first import and export are arranged on described the 3rd bobbin carriage; Described the second import and export are arranged on described the first bobbin carriage; Described the 3rd import and export are arranged on described shell; Described the 4th import and export are arranged on described guide shell.
Fix for ease of helical baffles, on described the first tube sheet, be fixed with the first pull bar; Described the first pull bar is vertically through described helical baffles.
For ease of fixing of the second heat exchanger tube, on described the 3rd tube sheet, be provided with the second pull bar; On described the second pull bar, interval is fixed with for fixing the supporting member of the second heat exchanger tube.
The beneficial effects of the utility model are:
(1) shell side is divided into inside and outside two-layer, so there is no leakage current between the shell side ectonexine, therefore there is no the problem of cold fluid and hot fluid mixed influence heat transfer property.
(2) the shell side internal layer adopts the longitudinal bracing structure, and shell side internal layer cross-sectional area is smaller, can guarantee to make the longitudinal flow flow velocity of shell side internal layer formation higher, so heat transfer coefficient is higher than under low discharge; " Z-shaped " property of comparing segmental baffle flows, and longitudinal flow has and flows evenly, without dead band, the advantage such as less scaling, resistance pressure drop is low.
(3) the outer helical baffles that adopts, if use continuous deflection plate, avoided tube side to flow inhomogeneous, and in the middle of avoiding, curvature changes greatly, and difficulty of processing is large.Center, due to the existence of inner housing, make the triangle that is interrupted the formation of deflection plate overlap joint smaller, thereby leakage current is smaller, is conducive to the raising of heat transfer coefficient.Helical flow is compared segmental baffle " Z-shaped " and is flowed, have unit pressure drop heat transfer coefficient high, flow evenly, without dead band, less scaling.
(4) can realize two-tube-pass, and tube side is with between shell side being countercurrent heat-transfer, heat transfer efficiency is higher, the shell side internal layer has improved the flow velocity of longitudinal flow, the coefficient of heat transfer is higher, outer helical flow, the leakage current of the trigonum of minimizing of adopting of shell side, heat transfer coefficient is also higher, and the resistance pressure drop of these two kinds of streams is all smaller.
In a word, double-shell side shell-and-tube heat exchanger of the present utility model has that flow resistance is little, heat transfer coefficient is high, the characteristics of good stability, can be widely used in the fields such as chemical industry, the energy, medicine, environmental protection, has a good application prospect.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Embodiment 1: as shown in Figure 1, a kind of double-shell side shell-and-tube heat exchanger, comprise shell 1, cold flow import 11a, cold flow outlet 11b, hot-fluid import 11c and hot-fluid outlet 11d.The two ends of shell 1 are respectively arranged with the first tube sheet 5a and the second tube sheet 5b, on the first tube sheet 5a and the second tube sheet 5b, are fixed with the first heat exchanger tube 3a.
The outside of the first tube sheet 5a and the second tube sheet 5b is fixed with respectively the first bobbin carriage 6a and the second bobbin carriage 6b.Be provided with centre bore on the first tube sheet 5a, this central hole is welded with inner casing 9.The first end of inner casing 9 extends to the second tube sheet 5b, and the shell side of shell 1 stroke is divided into to outer shell side 1a and interior shell side 1b.The second end of inner casing 9 stretches out the first tube sheet 5a, and the second end end of inner casing 9 is provided with guide shell 7, and the end of guide shell 7 is fixed with the three tube sheet 5c parallel with the second tube sheet 5b, on the second tube sheet 5b and the 3rd tube sheet 5c, is fixed with the second heat exchanger tube 3b.Inner casing 9, guide shell 7 and the 3rd tube sheet form a relatively independent cavity 12.
Be provided with a plurality of helical baffles 2 on the outer wall of inner casing 9, each helical baffles 2 forms helical form.Be provided with gripper shoe 10 between inner casing 9 and shell 1.
Be fixed with the first pull bar 4a on the first tube sheet 6a, the first pull bar 4a is vertically through helical baffles 2.
Be provided with the second pull bar 4b on the 3rd tube sheet 6c, the upper interval of the second pull bar 4b is fixed with the supporting member 8 for fixing the second heat exchanger tube 3b.
During heat exchanger work, cold flow flows in the second bobbin carriage 6b from cold flow import 11a, then flows into the first heat exchanger tube 3a and the second heat exchanger tube 2b, finally flows into the first bobbin carriage 6a, and from the cold flow outlet, 11b flows out; Hot-fluid flows in guide shell 7 from hot-fluid import 11c, and then shell side 1a from interior shell side 1b flows into, finally flow out from hot-fluid outlet 11d.
Embodiment 2: as shown in Figure 2, the structure of the present embodiment is substantially the same manner as Example 1, difference is, guide shell 7 is positioned at outside the first bobbin carriage 6a, the arranged outside of the 3rd tube sheet 5c has the 3rd bobbin carriage 6c, and it is upper that cold flow import 11a is arranged at the 3rd bobbin carriage 6c, and cold flow outlet 11b is arranged on the first bobbin carriage 6a, hot-fluid import 11c is arranged on shell 1, and hot-fluid outlet 11d is arranged on guide shell 7.
During heat exchanger work, cold flow flows in the 3rd bobbin carriage 6c from cold flow import 11a, then enters in the second heat exchanger tube 3b and flows in the second bobbin carriage 6b, and then flow into the first heat exchanger tube 3a, finally flows into the first bobbin carriage 6a, and from the cold flow outlet, 11b flows out; Hot-fluid in hot-fluid import 11c flows into shell side 1a, then from shell side 1a flow in shell side 1b, finally from hot-fluid outlet 11d outflow.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technical staff in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (6)
1. a double-shell side shell-and-tube heat exchanger, comprise that shell (1), first is imported and exported (11a), the second import and export (11b), the 3rd are imported and exported (11c) and the 4th and imported and exported (11d); The two ends of described shell (1) are respectively arranged with the first tube sheet (5a) and the second tube sheet (5b); Be fixed with the first heat exchanger tube (3a) on described the first tube sheet (5a) and the second tube sheet (5b); The outside of described the first tube sheet (5a) and the second tube sheet (5b) is fixed with respectively the first bobbin carriage (6a) and the second bobbin carriage (6b); It is characterized in that: be provided with centre bore on described the first tube sheet (5a), this central hole is welded with inner casing (9); The first end of described inner casing (9) extends to described the second tube sheet (5b), and the shell side of described shell (1) stroke is divided into to outer shell side (1a) and interior shell side (1b); The second end of described inner casing (9) stretches out described the first tube sheet (5a); The second end end of described inner casing (9) is fixed with three tube sheet (5c) parallel with described the second tube sheet (5b) relatively; Be fixed with the second heat exchanger tube (3b) on described the second tube sheet (5b) and the 3rd tube sheet (5c); Be provided with a plurality of helical baffles (2) on the outer wall of described inner casing (9), each helical baffles (2) forms helical form.
2. double-shell side shell-and-tube heat exchanger as claimed in claim 1, is characterized in that: between described inner casing (9) and shell (1), be provided with gripper shoe (10).
3. double-shell side shell-and-tube heat exchanger as claimed in claim 1 or 2, it is characterized in that: the second end end of described inner casing (9) is fixed with guide shell (7); Described the 3rd tube sheet (5c) is fixed on the end of described guide shell (7); Described inner casing (9), guide shell (7) and the 3rd tube sheet form a relatively independent cavity (12).
4. double-shell side shell-and-tube heat exchanger as claimed in claim 3, it is characterized in that: described guide shell (7) is positioned at described the first bobbin carriage (6a); Described first imports and exports (11a) is arranged on described the second bobbin carriage (6b); Described second imports and exports (11b) is arranged on described the first bobbin carriage (6a); The described the 3rd imports and exports (11c) is arranged at described guide shell (7) above, and stretches out described the first bobbin carriage (6a); Described the 4th import and export are arranged on described shell (1).
5. double-shell side shell-and-tube heat exchanger as claimed in claim 3, it is characterized in that: described guide shell (7) is positioned at outside described the first bobbin carriage (6); The arranged outside of described the 3rd tube sheet (5c) has the 3rd bobbin carriage (6c); Described first imports and exports (11a) is arranged on described the 3rd bobbin carriage (6c); Described second imports and exports (11b) is arranged on described the first bobbin carriage (6a); The described the 3rd imports and exports (11c) is arranged on described shell (1); The described the 4th imports and exports (11d) is arranged on described guide shell (7).
6. double-shell side shell-and-tube heat exchanger as claimed in claim 1 or 2, is characterized in that: be fixed with the first pull bar (4a) on described the first tube sheet (6a); Described the first pull bar (4a) is vertically through described helical baffles (2);
Be provided with the second pull bar (4b) on described the 3rd tube sheet (6c); The upper interval of described the second pull bar (4b) is fixed with the supporting member (8) for fixing the second heat exchanger tube (3b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295497 CN203349680U (en) | 2013-05-27 | 2013-05-27 | Double-shell side shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295497 CN203349680U (en) | 2013-05-27 | 2013-05-27 | Double-shell side shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203349680U true CN203349680U (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320295497 Expired - Fee Related CN203349680U (en) | 2013-05-27 | 2013-05-27 | Double-shell side shell-and-tube heat exchanger |
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| CN (1) | CN203349680U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729323A (en) * | 2013-12-23 | 2015-06-24 | 裴志中 | Inner cylinder and funnel split-ranging type double-shell-side shell-and-tube heat exchanger |
| CN108801036A (en) * | 2018-06-22 | 2018-11-13 | 沈阳汇博热能设备有限公司 | A kind of kettle type reboiler tube bank limiting device |
| CN109141079A (en) * | 2018-08-28 | 2019-01-04 | 张兴业 | A kind of the inside and outside of boosting adverse current double sets tubulation heat-exchanger rig |
| CN110906780A (en) * | 2018-09-18 | 2020-03-24 | 浙江盾安热工科技有限公司 | Knockout and have its shell and tube heat exchanger |
-
2013
- 2013-05-27 CN CN 201320295497 patent/CN203349680U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729323A (en) * | 2013-12-23 | 2015-06-24 | 裴志中 | Inner cylinder and funnel split-ranging type double-shell-side shell-and-tube heat exchanger |
| CN104729323B (en) * | 2013-12-23 | 2019-01-25 | 裴志中 | Inner cylinder and funnel divide formula double-shell side shell-and-tube heat exchanger |
| CN108801036A (en) * | 2018-06-22 | 2018-11-13 | 沈阳汇博热能设备有限公司 | A kind of kettle type reboiler tube bank limiting device |
| CN109141079A (en) * | 2018-08-28 | 2019-01-04 | 张兴业 | A kind of the inside and outside of boosting adverse current double sets tubulation heat-exchanger rig |
| CN109141079B (en) * | 2018-08-28 | 2022-04-05 | 济南冰鑫制冷设备有限公司 | Boosting countercurrent internal and external double-tube nest heat exchange device |
| CN110906780A (en) * | 2018-09-18 | 2020-03-24 | 浙江盾安热工科技有限公司 | Knockout and have its shell and tube heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |