CN202372045U - Rod baffle heat exchanger - Google Patents
Rod baffle heat exchanger Download PDFInfo
- Publication number
- CN202372045U CN202372045U CN2011205274461U CN201120527446U CN202372045U CN 202372045 U CN202372045 U CN 202372045U CN 2011205274461 U CN2011205274461 U CN 2011205274461U CN 201120527446 U CN201120527446 U CN 201120527446U CN 202372045 U CN202372045 U CN 202372045U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- rod
- shell
- rod baffle
- baffle
- 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.)
- Expired - Lifetime
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a rod baffle heat exchanger applicable to a benzene hydrofining process. The baffling rod type heat exchanger comprises a tube box, a tube plate, a shell and a heat exchange tube, wherein a plurality of grid baffles are arranged at intervals in the shell along the direction which is perpendicular to the axial direction of the shell; each grid baffle is formed by welding rod baffles which are parallel to one another on a baffling ring; heat exchange tube bundles penetrate through the rod baffles; the directions of the rod baffles in the two adjacent baffling fences are different, so when shell fluid flows through each grid baffle, turbulent flow is generated for one time; and the section of each rod baffle can be circular, rectangular or rhombic. The rod baffle heat exchanger has the advantages that the shell fluid longitudinally flows along the axial direction of the shell, transverse washing of the heat exchange tube bundles is eliminated, the shearing stress of the tube bundles and a supporting structure is effectively reduced, the vibration and abrasion of the tube bundles are reduced, by the structure, a turbulent flow self-cleaning function is realized, and dirt is difficult to deposit.
Description
Technical field
The utility model relates to a kind of coking, chemical industry equipment, particularly a kind of deflection bar type extraction feed/lean solvent heat exchanger that is used for the benzene hydrogenation process for refining.
Background technology
Extraction feed/lean solvent heat exchanger is a kind of heat exchanger that adopts sulfolane heating hydrocarbon mixture medium; It adopts deflection plate or support plate as the supporting construction of restraining; Increase flow velocity, and force fluid by the path of regulation repeatedly cross-flow improve the coefficient of heat transfer of shell side through tube bank.But, change repeatedly and wash away direction, and the angle of washing away roughly is a vertical direction because fluid needs the repeatedly horizontal tube bank of skimming over; So the flow resistance of fluid is very big, has flow dead in the part, and causes induced vibration easily; Cause the heat exchanger tube vibration abrasion, finally cause heat exchanger tube to be revealed.
Summary of the invention
The purpose of the utility model provides a kind of deflection bar type heat exchanger; This heat exchanger makes the flow direction of shell-side fluid be the longitudinal stream along the housing axial direction; Eliminate the transversal flow of heat exchanging tube bank, effectively reduced the shear stress of tube bank and supporting construction, reduced bundle vibration and wearing and tearing; And this structure also has the flow-disturbing self-cleaning action, and dirt is difficult for deposition.
For realizing above-mentioned purpose, the utility model is realized through following technical scheme:
A kind of deflection bar type heat exchanger; Comprise bobbin carriage, tube sheet, housing, heat exchanger tube; In housing, be interval with a plurality of deflecting fences with housing shaft to perpendicular direction, deflecting fence is welded on the baffling circle by the rod baffle that is parallel to each other and constitutes, and heat-exchanging tube bundle passes in rod baffle; In the deflecting fence of arranged adjacent rod baffle move towards different, make shell-side fluid every through a deflecting fence, promptly produce flow-disturbing one time.Described rod baffle cross section can be circle, rectangle or rhombus.
In described one group of deflecting fence; Rod baffle in first deflecting fence is arranged horizontally mode; Rod baffle in second deflecting fence is for to be 120 ° arrangement with level; Rod baffle in the 3rd deflecting fence is arranged horizontally mode, and the rod baffle in the 4th deflecting fence is for to be 60 ° arrangement with level.Perhaps, second deflecting fence deflection plate and level are 60 ° of layouts, and the 4th deflecting fence deflection plate and level are 120 ° of layouts, first, the rod baffle in the 3rd deflecting fence is arranged horizontally.
Compared with prior art, the beneficial effect of the utility model is:
1) after this heat exchanger adopts rod baffle to replace traditional deflection plate or support plate; Make original with cross-current and cross-flow be the flow direction of master's shell-side fluid become along housing shaft to longitudinal stream, not only Flow Field Distribution is more even, the dead band of almost not conducting heat; Also reduced the shear stress between tube bank and supporting construction effectively; And eliminated transversal flow to tube bank, and eliminated the flow-induced vibration effectively, reduced the wearing and tearing of tube bank.
2) in addition,, therefore, it will produce flow-disturbing when running into deflecting fence because the fluid in the shell side is to flow along tube bank; After the intensity of flow-disturbing weakens, can run into next deflecting fence again, produce flow-disturbing once more; So repeatedly the disturbance laminar boundary layer that has been attenuate has been strengthened heat-transfer effect effectively.
3), also make dirt be difficult for deposition because flow-disturbing repeatedly has self-cleaning action in the housing.Because above characteristics, this heat exchanger has also had advantages such as long service life, energy savings simultaneously.
Description of drawings
Fig. 1 is the structural representation of deflection bar type heat exchanger.
Fig. 2-a, Fig. 2-b, Fig. 2-c, Fig. 2-d are the structural representations of one group of deflecting fence of deflection bar type heat exchanger.
Among the figure: 1-bobbin carriage, 2-tube sheet, 3-heat exchanger tube, 4-rod baffle, 5-housing, 6-baffling circle.
The specific embodiment
Be described in detail the apparatus structure and the course of work of deflection bar type heat exchanger below through the specific embodiment.
See Fig. 1, Fig. 2-a, Fig. 2-b, Fig. 2-c, Fig. 2-d, a kind of deflection bar type heat exchanger; Comprise bobbin carriage 1, tube sheet 2, heat exchanger tube 3, rod baffle 4, housing 5, baffling circle 6; In housing 5, be interval with a plurality of deflecting fences with housing 5 axial perpendicular directions; Deflecting fence is welded on the baffling circle 6 by the rod baffle that is parallel to each other 4 and constitutes, and heat-exchanging tube bundle passes in rod baffle 4, and the diameter of rod baffle or thickness just in time equal the gap between adjacent two row's heat exchanger tubes; In the deflecting fence of arranged adjacent rod baffle move towards different, make shell-side fluid every through a deflecting fence, promptly produce flow-disturbing one time.Described rod baffle 4 cross sections can be circle, rectangle or rhombus.The material of rod baffle 4 can adopt round steel or band steel.
Per four deflecting fences of present embodiment are one group, according to the concrete condition of heat exchanger, specifically confirm arrange how much organize deflecting fence.
In one group of deflecting fence; Rod baffle in first deflecting fence is arranged horizontally mode (Fig. 2-a); Rod baffle in second deflecting fence is for being arrangement (Fig. 2-b) of 120 ° with level; Rod baffle in the 3rd deflecting fence is arranged horizontally mode, and (rod baffle among Fig. 2-c), the 4th deflecting fence is for being arrangement (Fig. 2-d) of 60 ° with level.Perhaps, second deflecting fence deflection plate and level be 60 ° of layouts (Fig. 2-d), the 4th deflecting fence deflection plate and level be 120 ° of layouts (Fig. 2-b), first, the rod baffle in the 3rd deflecting fence is arranged horizontally (Fig. 2-a, Fig. 2-d).
Can select the number of every group of deflecting fence according to the concrete condition of heat exchanger, the number of deflecting fence is the best with 3-5.In every group of deflecting fence, in the adjacent deflecting fence shell-side fluid is flow through, producing strong disturbance is principle, and principle is confirmed in every group of deflecting fence according to this, the arrangement mode at the angle of inclination of deflection plate and horizontal plane in the adjacent deflecting fence.
Claims (1)
1. deflection bar type heat exchanger; Comprise bobbin carriage, tube sheet, housing, heat exchanger tube, it is characterized in that, in housing, be interval with a plurality of deflecting fences to perpendicular direction with housing shaft; Deflecting fence is welded on the baffling circle by the rod baffle that is parallel to each other and constitutes, and heat-exchanging tube bundle passes in rod baffle; Rod baffle moves towards different in the deflecting fence of arranged adjacent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205274461U CN202372045U (en) | 2011-12-15 | 2011-12-15 | Rod baffle heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205274461U CN202372045U (en) | 2011-12-15 | 2011-12-15 | Rod baffle heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372045U true CN202372045U (en) | 2012-08-08 |
Family
ID=46595743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205274461U Expired - Lifetime CN202372045U (en) | 2011-12-15 | 2011-12-15 | Rod baffle heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372045U (en) |
-
2011
- 2011-12-15 CN CN2011205274461U patent/CN202372045U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |