CN2157476Y - Heat transfer enhancement and support between tubes of shell-and-tube heat exchanger - Google Patents
Heat transfer enhancement and support between tubes of shell-and-tube heat exchanger Download PDFInfo
- Publication number
- CN2157476Y CN2157476Y CN 93233429 CN93233429U CN2157476Y CN 2157476 Y CN2157476 Y CN 2157476Y CN 93233429 CN93233429 CN 93233429 CN 93233429 U CN93233429 U CN 93233429U CN 2157476 Y CN2157476 Y CN 2157476Y
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- heat
- cylindrical spring
- tube
- shell
- 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 - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a cylindrical spring is as the structural element of shell and tube heat exchanger outside of tubes heat transfer enhancement and support. The arrangement of the heat transfer tubes and the structural parameters (diameter d and pitch H) of the cylinder depend on alphai/αoOutside of the tube Re and allowable resistance drop [ Delta P ]]. The outer diameter of the cylindrical spring should be as close or in contact with the outer surface of the heat transfer tube as possible without making assembly difficult. The length of the cylindrical spring is slightly shorter than that of the heat transfer pipe, and at least one end of the cylindrical spring is provided with a straight shank segment with a hook so as to facilitate molding, assembly and axial positioning and facilitate uniform distribution of shell-side liquid. Experimental tests show that the comprehensive performance index (alpha/delta P) is superior to that of a deflecting grid heat exchanger, the heat transfer strengthening device can be widely applied to heat transfer strengthening under the working condition that Rc is not too high, steel consumption is saved (only less than 1/5 of the deflecting grid), the manufacturing is simple, the assembly is convenient and time-saving (only less than 1/5 of the deflecting grid), and the economic benefit is better.
Description
The utility model belongs between the pipe of shell and tube exchanger and supports and heat conduction reinforced structure.
U.S. Phillips oil company has applied for deflecting fence heat exchanger US3 in 1971.1.11,708,142, and it has well solved the heat-transfer pipe vibration problem, and the effect of augmentation of heat transfer is preferably arranged under high Re.But most shell and tube exchangers are not to move under high like that Re, thereby the heat-transfer pipe vibration problem is not the subject matter in the actual motion, and the heat conduction reinforced poor effect of deflecting fence structure, and make and the assembling complexity high material consumption, work time cost height.
The purpose of this utility model is to provide a kind of efficient shell and tube exchanger can be suitable under the outer not too high operating mode of reynolds number Re of pipe, and make easy, supporting construction between the heat conduction reinforced and pipe that consumable material is few, fluid resistance is low.In this new structure, there is not traditional deflection plate, extratubal fluid has almost been eliminated the lateral flow of inducing the heat-transfer pipe vibration and has been become parallel vertically flowing, and cylindrical spring itself gives heat-transfer pipe with cross-brace constraint and damping effect in addition.Extratubal fluid is subjected to the continuous disturbance of cylindrical spring along journey during operation, thereby makes the heat transfer of neighbour's heat-transfer pipe outside wall surface district obtain efficient hardening; Because cylindrical spring silk footpath is little, core flow is not constituted resistance, thereby the resistance of this structure is quite low.
The structural detail that the utility model adopts common cylindrical spring to conduct heat and support between reinforcement and heat-transfer pipe pipe as the shell and tube exchanger pipe outward.Spring wire footpath d is between (0.5～2.0) mm.The pitch H of spring is the heat-transfer pipe outer diameter D
0(0.2～0.8) doubly.The uniform tube pitch t of heat-transfer pipe square
1The time, the spring outer diameter D is
t
1-D
0-(0～1.2) mm, the uniform tube pitch of heat-transfer pipe triangle is t
2The time, the spring outer diameter D is (0.577t
2～0.5D
0)-(0～1.2) mm contacts spring or approaching as much as possible with the heat-transfer pipe appearance, and makes things convenient for actual assembled.The length of spring is near heat-transfer pipe, and two of spring (having one at least) has the straight handle section of band crotch, so that stretch forming and axial location help the even distribution of fluid again.When practical application, (d, H D) and the arrangement mode (square or triangle) of heat-transfer pipe selected, all depend on the ratio cc of the individual heat transfer coefficient that pipe is inside and outside to the structural parameters of spring
1/ α
0Permissible value ［ △ P ］ falls with Re and pipe external resistance that pipe is outer.
Fig. 1 is with the assembling schematic longitudinal elevation view of cylindrical spring as the shell and tube exchanger of supporting construction element between outer heat transfer reinforcement of pipe and pipe.Heat-transfer pipe among the figure (1), spring (2), spring straight handle section (3).
Fig. 2 is the cross-sectional partial enlarged drawing of heat exchanger assembling mode shown in Figure 1, and expression heat-transfer pipe (1) is with tube pitch t
1When arranging and the assembling mode of spring (2) as square.
Fig. 3 is the cross-sectional partial enlarged drawing of heat exchanger shown in Figure 1 assembling mode, and expression heat-transfer pipe (1) is being t between pipe
2When being equilateral triangle and arranging and the assembling mode of spring (2).
Fig. 4 is the schematic diagram of spring (2), and at least one headband of spring (2) has stretch forming assembling and the straight handle section (3) of locating usefulness.
Fig. 5 represents combination property (α/△ P-Re) empirical curve of three kinds of different structure heat exchangers.111# among the figure, 114# represent the heat exchanger that the present invention designs, and 211#, 214# represent the deflecting fence heat exchanger, 311#, and 314# represents baffle heat exchanger, the present invention is all better than deflecting fence, baffle arrangement as seen from the figure.In addition, designing and calculating shows that spring consumption material only needs below 1/5 of deflecting fence, deflection plate between pipe of the present invention, and assembling man-hour also only need below 1/5 of deflecting fence.
The inventor once had following embodiment: heat-transfer pipe is an outer diameter D
0The copper pipe of=25mm, heat-transfer pipe have square to arrange, and also have equilateral triangle to arrange, its tube pitch t
1=t
2=32mm, for air is heated, pipe is outer to be that water vapour heats in the pipe.Heat transfer pipe range 1000mm, the steel wire diameter d of cylindrical spring is respectively 0.6,0.8,1.0,1.2,1.5,2.0mm; The pitch H of spring changes in (0.2～0.8) DO scope; The about 800mm of spring length, the straight handle section of spring is about 100mm, assembles by Fig. 3 and mode shown in Figure 4.Successively to the test of conducting heat of the device of more than ten kinds of different structure parameters, measurement shows heat conduction reinforced effective, the shell side resistance reduces, its integrated performance index (α/△ P) is than traditional baffle arrangement height (wanting when the Re=9000 high by 125%～170%), than rod baffle structure also high (wanting high by 50%～80% when the Re=9000).(annotate: the baffle heat exchanger structure of contrast is 37 pipe φ 25 * 2.5 * 2.5 * 2000, deflection plate distance between plates 400mm; The deflection rod heat exchanger structure of contrast is 37 pipe φ 25 * 2.5 * 2.5 * 2000, and deflecting fence pitch is 80mm.Both heat transfer tests are water vapour → copper pipe → air.These data are drawn from " petrochemical equipment " 1988, V17, and n1, P8, Fig. 3,4,5,6 and " chemical oil refining's machinery " 1983, n2, p6, table 3, Fig. 7)
Claims (1)
1, heat conduction reinforced and the structural detail that supports between a kind of shell and tube exchanger pipe is characterized in that: structural detail be shaped as cylindrical spring, its external diameter (D) is by heat-transfer pipe external diameter (D
o) and tube pitch from (t) decision, at heat-transfer pipe with tube pitch t
1The outer diameter D of cylindrical spring when square is arranged=(
t
1-D
O(0～1.2)) mm, at heat-transfer pipe with tube pitch t
2When equilateral triangle is arranged D=0.577t
2-0.5D
o-(0～1.2) mm; Cylindrical spring pitch H=(0.2～0.8) D
oThe cylindrical spring silk directly is d, d=(0.5～2.0) mm; Cylindrical spring is installed in the gap between the heat-transfer pipe, the outer surface of cylindrical spring and heat-transfer pipe outer surface or contact or approaching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233429 CN2157476Y (en) | 1993-03-10 | 1993-03-10 | Heat transfer enhancement and support between tubes of shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233429 CN2157476Y (en) | 1993-03-10 | 1993-03-10 | Heat transfer enhancement and support between tubes of shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2157476Y true CN2157476Y (en) | 1994-02-23 |
Family
ID=33809365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93233429 Expired - Fee Related CN2157476Y (en) | 1993-03-10 | 1993-03-10 | Heat transfer enhancement and support between tubes of shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2157476Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312454C (en) * | 2004-12-22 | 2007-04-25 | 天津天大胜远中央空调有限公司 | Arrangement method for heat transfer pipe in heat exchanger rig |
| CN101680719B (en) * | 2007-05-29 | 2011-01-12 | 徐东崇 | Assembly type hydraulic-operating oil cooling apparatus |
| CN102226654A (en) * | 2011-05-05 | 2011-10-26 | 长沙理工大学 | Shell pass insertion-piece-type tube-and-shell heat exchanger |
-
1993
- 1993-03-10 CN CN 93233429 patent/CN2157476Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312454C (en) * | 2004-12-22 | 2007-04-25 | 天津天大胜远中央空调有限公司 | Arrangement method for heat transfer pipe in heat exchanger rig |
| CN101680719B (en) * | 2007-05-29 | 2011-01-12 | 徐东崇 | Assembly type hydraulic-operating oil cooling apparatus |
| CN102226654A (en) * | 2011-05-05 | 2011-10-26 | 长沙理工大学 | Shell pass insertion-piece-type tube-and-shell heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |