CN216011866U - Combined double-shell-pass continuous spiral baffle plate type heat exchanger - Google Patents
Combined double-shell-pass continuous spiral baffle plate type heat exchanger Download PDFInfo
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- CN216011866U CN216011866U CN202120327599.5U CN202120327599U CN216011866U CN 216011866 U CN216011866 U CN 216011866U CN 202120327599 U CN202120327599 U CN 202120327599U CN 216011866 U CN216011866 U CN 216011866U
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- continuous spiral
- heat exchange
- heat exchanger
- central sleeve
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- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000012546 transfer Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a combined double-shell pass continuous spiral baffle type heat exchanger, which comprises a shell and a central sleeve. The left end of the shell is connected with the central sleeve in a sealing mode through an annular partition plate, the continuous spiral baffle plates with the helix angle of 10 degrees are spirally wound in the shell, the baffle plates with the large holes and the small holes are installed in the central sleeve at equal intervals, and a novel double-shell-pass structure is formed. Under the flow guide action of the annular partition plate and different baffle plates, shell pass fluid continuously flows through the inner shell pass and the outer shell pass, so that the structure is compact, the heat exchange coefficient is increased, and the overall heat exchange efficiency of the heat exchanger is improved; the baffle plates on the inner shell side and the outer shell side ensure that the fluid flow of the whole shell side is relatively uniform, and the probability of vibration induced by the fluid flow on the shell side is effectively reduced; the heat exchange tubes are respectively arranged in the central sleeve and the shell in a triangular and concentric tube arrangement mode, so that the tube arrangement density is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.
Description
Technical Field
The utility model relates to a heat exchanger, in particular to a double-shell pass continuous spiral baffle type heat exchanger with a spiral baffle plate on a shell and a large-small hole baffle plate on a central sleeve.
Background
As a big country for energy production and consumption, China has the leading production and consumption capability in the world, energy supply and consumption conditions are increased day by day along with the rapid increase of economic strength of China, and the reasonable and efficient utilization of energy becomes a hot topic of the current society. However, along with the development of productivity, the problems of low energy utilization rate and low per capita energy occupancy in China are continuously exposed, and the problems become a bottleneck for realizing sustainable development in China. Therefore, the efficient energy utilization technology is used, unnecessary energy consumption is reduced, a low-carbon and environment-friendly policy is implemented, and the problem of energy supply and demand is relieved, so that the method has extremely important strategic significance on energy development in China.
The heat exchanger is used as an extremely important heat transfer device and plays a role in adjusting the temperature of fluid in industrial production so as to enable the working fluid to meet the required process requirements. The heat exchanger is a universal device in the industries of petroleum, chemical industry, power generation, metallurgy and the like. Taking the petrochemical industry as an example, the economic investment of the heat exchanger reaches about 50 percent. Three high-efficient practical heat exchangers exist: dividing wall type, mixed type and heat storage type. The dividing wall type heat exchanger mainly comprises a tubular heat exchanger, a double-pipe heat exchanger and a shell-and-tube heat exchanger, wherein the double-shell pass continuous spiral baffle type heat exchanger belongs to one of the shell-and-tube heat exchangers.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior technical problems, meet the process requirements, improve the heat transfer coefficient, reduce the pressure drop of the shell side and improve the heat transfer efficiency, the utility model provides a combined double-shell-side continuous spiral baffle plate type heat exchanger as shown in figure 2, wherein the inner wall of a central sleeve is provided with large and small hole baffle plates, the inner wall of a shell is provided with continuous spiral baffle plates, an annular baffle plate is positioned between inlet and outlet connecting pipes of the shell side, and a split-pass structure formed by welding the central sleeve and the annular baffle plate divides the shell into an inner shell side and an outer shell side. The outer ring of the annular partition plate is matched with the inner wall of the shell, a welded sealing mode is adopted, the structure is compact, and the sealing performance is good. The differential design of different shell passes enables the heat exchange performance of unit pressure drop to be better improved, meanwhile, the medium flow of the spiral in the channel washes away particles and precipitates in the shell pass, dirt heat resistance is reduced, and the heat exchange efficiency is favorably improved.
Preferably, the left end of the shell is hermetically connected with the central sleeve through an annular partition plate, and the large and small hole baffle plates and the continuous spiral baffle plate form a novel double-shell-pass structure.
The large-small hole baffle plate is installed in the central sleeve through the grooves and the heat exchange tubes, and if the proper large hole diameter and the proper plate interval are selected, the large-small hole baffle plate has a high shell-side heat transfer coefficient and a low shell-side pressure drop.
As optimization, the continuous spiral baffle plates with the helix angle of 10 degrees are spirally wound in the shell, the baffle plates with the large holes and the small holes are equidistantly arranged in the central sleeve, the fluid flow of the whole shell side is uniform, and the probability of vibration induced by the fluid flow of the shell side is effectively reduced.
As optimization, the heat exchange tubes are arranged in the central sleeve and the shell in a concentric circle mode, so that the tube arrangement density is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.
The utility model has the beneficial effects that: compared with the single continuous spiral baffle plate central pipe, the double-shell-pass structure greatly improves the space utilization rate, so that the whole structure of the heat exchanger is more compact, and the whole heat exchange efficiency of the heat exchanger is improved; the large-small hole baffle plate is arranged in the central sleeve through the groove and the heat exchange tube, and has higher shell pass heat transfer coefficient and lower shell pass pressure drop if proper large hole diameter and plate spacing are selected; the heat exchange tubes are respectively arranged in the central sleeve and the shell in a triangular and concentric tube arrangement mode, so that the tube arrangement density is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.
Drawings
FIG. 1 is a schematic view of a tube pass structure of a heat exchanger according to the present invention
FIG. 2 is a schematic view of a heat exchanger large and small hole baffle structure of the present invention
FIG. 3 is a schematic view of the shell side structure of the heat exchanger of the present invention
In the figure, 1-shell pass fluid inlet, 2-shell pass fluid outlet, 3-shell, 4-central sleeve, 5-heat exchange tube, 6-big and small hole baffle plate big hole, 7-big and small hole baffle plate small hole, 8-big and small hole baffle plate, 9-continuous spiral baffle plate, 10-inner shell pass, 11-outer shell pass, 12-annular partition plate, 13-tube pass fluid inlet, 14-tube pass fluid outlet.
Detailed Description
The specific process of the present invention will now be described by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, the combined double-shell-pass continuous spiral baffle type heat exchanger mainly comprises a shell-pass fluid inlet 1, a shell-pass fluid outlet 2, a shell 3, a central sleeve 4, a heat exchange tube 5, large and small baffle holes 6, small and large baffle holes 7, large and small baffle plates 8, a continuous spiral baffle plate 9, an inner shell pass 10, an outer shell pass 11, an annular partition plate 12, a tube-pass fluid inlet 13 and a tube-pass fluid outlet 14.
As shown in fig. 1, the heat exchange tubes 5 are respectively arranged in the central sleeve 4 and the shell 3 in a triangular and concentric tube arrangement manner, so that the tube arrangement density is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.
As shown in figure 2, the large-small hole baffle plate 8 is formed by arranging large holes 6 and small holes 7 on a circular plate according to a certain rule, the small holes 6 are used for supporting a tube bundle as a common bow-shaped baffle plate, and the large holes 7 are used for enabling a shell-side fluid to flow through a gap between the heat exchange tube 5 and the large holes 7 to form a gap adherent jet along the tube wall. The positions of the big holes and the small holes of the two adjacent big-small hole baffle plates 8 are just opposite to each other so as to effectively support the tube bundle, and the tube bundle is arranged along the axial direction and is vertical to the arrangement direction of the heat exchange tubes 5.
As shown in fig. 3, the continuous spiral baffle plate 9 is installed on the outer wall of the central sleeve 4 of the combined double-shell pass continuous spiral baffle plate heat exchanger, the shell 3 and the central sleeve 4 are coaxially sleeved, the left end of the central sleeve 4 is connected with the annular partition plate 12 in a sealing welding manner, and the outer ring of the annular partition plate 12 is connected with the inner side of the shell 3 in a sealing welding manner. The two sides of the annular partition plate 12 are respectively provided with a shell pass fluid inlet 1 and a shell pass fluid outlet 2, and a plurality of heat exchange tubes 5 which are parallel to each other are arranged on the spiral baffle plate 9 and the large and small hole baffle plates 8 to form an integrated split-pass sealing structure.
The working principle of the utility model is as follows:
the heat exchange process comprises the following steps: the tube-side fluid flows from the tube-side fluid inlet 13 through the heat exchange tubes 5 to the tube-side fluid outlet 14. The shell side fluid enters from the shell side fluid inlet 1, spirally advances in the shell side 11 along the continuous spiral baffle plate 9 after the annular partition plate 12, then enters the inner shell side 10 and flows out from the shell side fluid outlet 2 through the drainage function of the large and small hole baffle plates 8, and finally a complete heat exchange process is realized.
The above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention. Any modification or partial replacement without departing from the spirit of the present invention should be covered in the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a modular two shell side continuous spiral baffling plate heat exchangers, mainly imports and exports, casing, central sleeve, heat exchange tube, continuous spiral baffling board, big or small hole baffling board, tube side by annular baffle, shell side and imports and exports and constitute its characterized in that:
the shell of the heat exchanger adopts a continuous spiral baffle plate as a flow deflector, and the central sleeve adopts a baffle plate with large and small holes as a flow deflector; the shell and the central sleeve are coaxially sleeved, the left end of the shell is connected with the central sleeve in a sealing mode through an annular partition plate, a plurality of replacement heat pipes are distributed on the continuous spiral baffle plate and the large and small hole baffle plates in a concentric circle mode, and a pass-by sealing structure which is connected into a whole is formed.
2. The combined double-shell-pass continuous spiral baffle type heat exchanger as claimed in claim 1, wherein the left end of the shell is hermetically connected with the central sleeve by an annular partition plate, the large and small hole baffle plates and the continuous spiral baffle plate form a novel double-shell-pass structure, and the space utilization rate of the central tube of the continuous spiral baffle plate is greatly improved compared with that of the central tube with the continuous spiral baffle plate independently, so that the whole structure of the heat exchanger is more compact, and the whole heat exchange efficiency of the heat exchanger is improved.
3. A combined double shell-side continuous spiral baffle heat exchanger as claimed in claim 1, wherein the large and small hole baffles are fixed in the central sleeve by grooves and heat exchange tubes, and if a proper large hole diameter and plate spacing are selected, a higher shell-side heat transfer coefficient and a lower shell-side pressure drop are achieved.
4. The combined double-shell-side continuous spiral baffle type heat exchanger as claimed in claim 1, wherein the spiral angle of the continuous spiral baffle is 10 degrees and the continuous spiral baffle is coiled in the shell, the baffles with large holes and small holes are equidistantly arranged in the inner sleeve, the fluid flow of the whole shell side is uniform, and the probability of vibration induced by the fluid flow of the shell side is effectively reduced.
5. The combined double-shell-side continuous spiral baffle type heat exchanger as claimed in claim 1, wherein the heat exchange tubes are respectively arranged in the central sleeve and the shell in a triangular and concentric tube arrangement mode, so that the tube arrangement density is increased, the heat exchange area is increased, and the heat exchange efficiency is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120327599.5U CN216011866U (en) | 2021-02-04 | 2021-02-04 | Combined double-shell-pass continuous spiral baffle plate type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120327599.5U CN216011866U (en) | 2021-02-04 | 2021-02-04 | Combined double-shell-pass continuous spiral baffle plate type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216011866U true CN216011866U (en) | 2022-03-11 |
Family
ID=80581414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120327599.5U Expired - Fee Related CN216011866U (en) | 2021-02-04 | 2021-02-04 | Combined double-shell-pass continuous spiral baffle plate type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216011866U (en) |
-
2021
- 2021-02-04 CN CN202120327599.5U patent/CN216011866U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |