CN116336835A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- CN116336835A CN116336835A CN202310198537.2A CN202310198537A CN116336835A CN 116336835 A CN116336835 A CN 116336835A CN 202310198537 A CN202310198537 A CN 202310198537A CN 116336835 A CN116336835 A CN 116336835A
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- Prior art keywords
- heat exchange
- tube
- exchange unit
- shell body
- shell
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- 238000004891 communication Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 abstract description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 240000009087 Crescentia cujete Species 0.000 description 3
- 235000005983 Crescentia cujete Nutrition 0.000 description 3
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
- F28F13/125—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation by stirring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
- F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat exchanger, and belongs to the technical field of heat exchange. Comprising the following steps: the heat exchange device comprises a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit and the second heat exchange unit respectively comprise a tube shell body, a plurality of heat exchange tubes extending along a first direction are arranged in the tube shell body, each heat exchange tube is formed by a plurality of necking sections and expanding sections which are sequentially connected, and at least one collision rod is arranged between any two heat exchange tubes; a tube side communicating tube which communicates with a first air flow passage in the heat exchange tube of the first heat exchange unit and the heat exchange tube of the second heat exchange unit; the shell side communicating pipe is communicated with a second airflow channel between the shell body of the first heat exchange unit and the heat exchange tube and between the shell body of the second heat exchange unit and the heat exchange tube. The invention solves the problem of low heat transfer efficiency of the traditional tubular heat exchange equipment.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to an oversized high-efficiency low-resistance heat exchanger.
Background
Currently, in heat exchange equipment used in the chemical industry field, tubular heat exchangers are still dominant. The tube heat exchanger is a partition wall type heat exchanger taking the wall surface of a tube bundle enclosed in a shell as a heat transfer surface, and the structure generally comprises a tube box, a shell, the tube bundle, a tube plate, a baffle plate and the like. The heat exchanger has the advantages of simple structure, low manufacturing cost, wider flow section and easy cleaning, but has the following technical problems: firstly, the heat exchanger of the type has low heat transfer coefficient and poor heat transfer effect; secondly, flow and heat transfer dead zones are easy to generate, and the heat transfer effect is affected; thirdly, scale formation is easy to form on the surface of the heat pipe and the inside of the shell, so that the heat exchange effect of the heat exchanger is greatly influenced, the heat exchange coefficient is reduced, and the heat exchange efficiency is greatly reduced.
Disclosure of Invention
Based on the heat, the invention provides an efficient and energy-saving tubular heat exchanger, and solves the problem of low heat transfer efficiency of the conventional tubular heat exchange equipment.
Aiming at the technical problems, the invention provides the following technical scheme:
a heat exchanger, comprising: the heat exchange device comprises a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit and the second heat exchange unit respectively comprise a tube shell body, a plurality of heat exchange tubes extending along a first direction are arranged in the tube shell body, each heat exchange tube is formed by a plurality of necking sections and expanding sections which are sequentially connected, and at least one collision rod is arranged between any two heat exchange tubes; a tube side communicating tube which communicates with a first air flow passage in the heat exchange tube of the first heat exchange unit and the heat exchange tube of the second heat exchange unit; the shell side communicating pipe is communicated with a second airflow channel between the shell body of the first heat exchange unit and the heat exchange tube and between the shell body of the second heat exchange unit and the heat exchange tube.
In some embodiments of the present invention, the first heat exchange unit and the second heat exchange unit respectively include an upper tube plate and a lower tube plate fixedly connected to the tube shell body, the first ends of the heat exchange tubes are fixedly arranged on the upper tube plate in a penetrating manner, and the second ends of the heat exchange tubes are fixedly arranged on the lower tube plate in a penetrating manner.
In some embodiments of the present invention, the heat exchanger further comprises at least one baffle ring plate surrounding the outer sides of the heat exchange tubes, and the plurality of the collision rods are supported on the baffle ring plate.
In some embodiments of the invention, the baffle ring plate is spaced from the upper tube plate by a support bar between the baffle ring plate and the lower tube plate and between adjacent baffle rings.
In some embodiments of the present invention, a first interface is disposed at a top end of a tube shell body of the first heat exchange unit, a second interface is disposed at a top end of a tube shell body of the second heat exchange unit, and the first interface and the second interface are communicated through the tube side communicating tube.
In some embodiments of the present invention, the tube side communicating tube is an inverted U-shaped tube, and the tube diameter of the tube side communicating tube is smaller than the tube diameters of the tube shell body of the first heat exchange unit and the tube shell body of the second heat exchange unit.
In some embodiments of the present invention, a divergent arc tube wall is formed between a first interface and an upper tube plate of the tube shell body of the first heat exchange unit, and a divergent arc tube wall is formed between a second interface and an upper tube plate of the tube shell body of the second heat exchange unit.
In some embodiments of the present invention, a third interface is disposed on a side wall of the shell body of the first heat exchange unit, a fourth interface is disposed on a side wall of the shell body of the second heat exchange unit, the third interface and the fourth interface are communicated through the shell side communicating pipe, and the shell side communicating pipe is located in a region close to the upper tube plate.
In some embodiments of the present invention, the shell body of the first heat exchange unit is provided with a first air inflow port in a lower side region of the lower tube sheet, and the shell body of the second heat exchange unit is provided with a first air outflow port in a lower side region of the lower tube sheet; the shell body of the first heat exchange unit is provided with a second airflow outlet in the upper side area of the lower tube plate, and the shell body of the second heat exchange unit is provided with a second airflow inlet in the upper side area of the lower tube plate.
In some embodiments of the present invention, a bottom of the shell body of the first heat exchange unit is provided with a first drain pipe, and a bottom of the shell body of the second heat exchange unit is provided with a second drain pipe.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
in the heat exchanger provided by the invention, the heat exchange tube positioned in the tube shell body is formed by sequentially connecting the necking section and the expanding section, so that the heat exchange tube similar to a calabash tube is formed, and the gas flow in the heat exchange tube forms a regular and orderly turbulent flow state, thereby being beneficial to improving the heat transfer efficiency. Meanwhile, when the gas flows in a turbulent state, the fouling of the pipe wall can be prevented. The thin-wall calabash tube can deform along with the change of temperature, and is also beneficial to absorbing stress generated by expansion. In addition, at least one collision rod is arranged between any two heat exchange tubes in the tube shell body of the heat exchanger, so that the gas in the second airflow channel in the tube shell body and the heat exchange tubes also form an orderly turbulent flow state, and the heat transfer efficiency of the whole heat exchanger is improved.
Drawings
The objects and advantages of the present invention will be better understood by describing in detail preferred embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of the internal structure of a shell-and-tube heat exchanger according to the present invention;
FIG. 3 is a transverse cross-sectional view of the internal structure of the heat exchanger shell body provided by the present invention;
FIG. 4 is a schematic diagram showing the positional relationship between a heat exchange tube and a bump rod in the heat exchanger according to the present invention;
FIG. 5 is a transverse cross-sectional view of a heat exchange tube and a trip bar in a heat exchanger provided by the present invention;
FIG. 6 is a schematic view of the flow direction of the fluid inside the heat exchange tube in the heat exchanger according to the present invention;
fig. 7 is a schematic view of the flow direction of the fluid in the shell body in the heat exchanger according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 1 shows a specific embodiment of the heat exchanger provided by the invention, and the heat exchanger is applied to the heat exchange process of 'gas-gas heat transfer' and 'liquid-gas heat transfer' in all chemical heat exchange units. In particular, in the design of a large heat exchanger with a small heat transfer temperature difference, the heat exchanger for the methanol reactor is taken as an example in the embodiment to illustrate the structural characteristics of the heat exchanger. Specifically, the gas after the reaction of the methanol reactor is used as the first gas flow of the heat exchanger, the unreacted gas without the reaction of the methanol reactor is used as the second gas flow of the heat exchanger, and the first gas flow and the second gas flow exchange heat to realize the cooling of the gas after the reaction and the heating treatment of the unreacted gas.
The heat exchanger comprises a first heat exchange unit 100a and a second heat exchange unit 100b, wherein the first heat exchange unit 100a and the second heat exchange unit 100b respectively comprise a tube shell body 10, a plurality of heat exchange tubes 20 extending along a first direction (vertical direction in the figure) are arranged in the tube shell body 10, each heat exchange tube 20 comprises a plurality of necking sections 20a and expanding sections 20b which are sequentially connected, and at least one collision rod 30 is arranged between any two heat exchange tubes 20; the heat exchange device further comprises a tube side communicating tube 40 and a shell side communicating tube 50, wherein the tube side communicating tube 40 is communicated with a first airflow channel A positioned in the heat exchange tube 20 of the first heat exchange unit 100a and the heat exchange tube 20 of the second heat exchange unit 100 b; the shell side communication pipe 50 communicates with a second air flow passage B between the shell body 10 and the heat exchange tube 20 of the first heat exchange unit 100a and between the shell body 10 and the heat exchange tube 20 of the second heat exchange unit 100B.
In the above heat exchanger, the heat exchange tube 20 is formed by sequentially connecting the necking segment 20a and the expanding segment 20b, and when the gas in the heat exchange tube 20 flows, as shown in fig. 6, a series of turbulence is generated along the tube wall of the heat exchange tube 20. So that the first gas flow in the heat exchange tube 20 is in a high "disturbance" state, which is beneficial to improving the heat transfer efficiency. Meanwhile, when the gas flows in a turbulent state, the fouling of the pipe wall can be prevented. The thin-wall calabash tube can deform along with the change of temperature, and is also beneficial to absorbing stress generated by expansion. In addition, at least one bump rod 30 is disposed between any two heat exchange tubes 20, wherein the gas flow condition in the second gas flow channel B is as shown in fig. 7, and the second gas flow also forms an orderly turbulent flow state, so that the heat transfer efficiency of the whole heat exchanger is improved.
Specifically, in an alternative embodiment, the first heat exchange unit 100a and the second heat exchange unit 100b respectively include an upper tube plate 60 and a lower tube plate 70 fixedly connected to the shell body 10, the first ends of the plurality of heat exchange tubes 20 are fixedly arranged on the upper tube plate 60 in a penetrating manner, and the second ends of the plurality of heat exchange tubes 20 are fixedly arranged on the lower tube plate 70 in a penetrating manner. Specifically, the shapes of the upper tube plate 60 and the lower tube plate 70 are matched with the shape of the inner wall of the tube shell body 10, for example, as shown in fig. 2, the upper tube plate 60 and the lower tube plate 70 are respectively circular plates, a plurality of through holes are formed in the circular plates, two side end portions of the heat exchange tube 20 are respectively inserted and fixed in the through holes of the circular plates, and the heat exchange tube 20 and the circular plates can be sealed by adopting welding connection to avoid mixed flow of the first air flow and the second air flow. More specifically, the heat exchange tube 20 includes a gourd-shaped heat exchange tube section 20-1 located in a central region and straight tube sections 20-2 located in end regions on both sides, respectively, the straight tube sections 20-2 on both sides being adapted to achieve a reliable sealing connection with the upper tube sheet 60 and the lower tube sheet 70.
Specifically, in an alternative embodiment, the heat exchanger further includes at least one baffle ring 80 surrounding the outer sides of the heat exchange tubes 20, and the plurality of the impact bars 30 are supported on the baffle ring 80. Specifically, the two ends of the bump rod 30 are respectively inserted into the inner walls of the two opposite sides or the two ends of the bump rod 30 are respectively overlapped with the upper side wall of the baffle ring plate 80.
The number of the bump bars 30 is determined according to the number of the heat exchange tubes 20, so as to ensure that bump bars 30 are arranged between adjacent heat exchange tubes 20. Meanwhile, the baffle ring plates 80 and the collision rods 30 are uniformly distributed along the axial extension direction of the heat exchange tube 20 at intervals, so that the resistance of the second air flow in different axial regions of the heat exchange tube 20 is approximately the same, and an orderly turbulent flow state is formed, so that the heat transfer efficiency of the whole heat exchanger is improved.
Specifically, between the baffle ring 80 and the upper tube plate 60, the baffle ring 80 is spaced from the lower tube plate 70 and adjacent baffle ring 80 by support rods (not shown in the figure), so as to realize reliable support and fixation of the baffle ring 80, and the support and fixation mode facilitate the assembly of the heat exchange tube 20, the upper tube plate 60, the lower tube plate 70, the baffle ring 80 and the like of the tube shell body 10 before the assembly is mounted inside the tube shell body 10, and only the upper tube plate 60, the lower tube plate 70 and the tube shell body 10 need to be connected and fixed after the assembly is mounted on the tube shell body 10.
The top end of the tube shell body 10 of the first heat exchange unit 100a is provided with a first interface 10a, the top end of the tube shell body 10 of the second heat exchange unit 100b is provided with a second interface 10b, the first interface 10a and the second interface 10b are communicated through the tube side communicating tube 40 so as to realize mutual communication of first airflows in the two heat exchange units, specifically, a first airflow channel A in the heat exchange tube 20 of the first heat exchange unit 100a is communicated with the first interface 10a positioned in the tube shell body 10 through a through hole of the upper tube plate 60, and a first airflow channel A in the heat exchange tube 20 of the second heat exchange unit 100b is communicated with the second interface 10b positioned in the tube shell body 10 through a through hole of the upper tube plate 60.
Specifically, the tube-side communicating tube 40 is an inverted U-shaped tube, and the tube-side communicating tube 40 has a tube diameter smaller than the tube diameters of the tube shell body 10 of the first heat exchange unit 100a and the tube shell body 10 of the second heat exchange unit 100 b.
Specifically, in an alternative embodiment, the tube shell body 10 of the first heat exchange unit 100a forms a diverging arc tube wall between the first interface 10a and the upper tube plate 60, and the tube shell body 10 of the second heat exchange unit 100b forms a diverging arc tube wall between the second interface 10b and the upper tube plate 60.
Specifically, the side wall of the shell-and-tube body 10 of the first heat exchange unit 100a is provided with a third port 10c, the side wall of the shell-and-tube body 10 of the second heat exchange unit 100b is provided with a fourth port 10d, the third port 10c and the fourth port 10d are communicated with each other through the shell-side communicating tube 50, and the shell-side communicating tube 50 is located in a region close to the upper tube plate 60. The second air flow between the tube shell body 10 and the heat exchange tube 20 passes through the shell side of the second heat exchange unit 100b to exchange heat, and then enters the shell side of the first heat exchange unit 100a to exchange heat continuously.
Specifically, the shell body 10 of the first heat exchange unit 100a is provided with a first air flow inlet A1 in the lower side region of the lower tube sheet 70, and the shell body 10 of the second heat exchange unit 100b is provided with a first air flow outlet A2 in the lower side region of the lower tube sheet 70; the shell body 10 of the first heat exchange unit 100a is provided with a second air flow outlet B2 in an upper side region of the lower tube sheet 70, and the shell body 10 of the second heat exchange unit 100B is provided with a second air flow inlet B1 in an upper side region of the lower tube sheet 70. The first gas flow after the reaction of the methanol reactor enters the heat exchange tube 20 of the first heat exchange unit 100a through the first gas flow inlet A1 positioned at the lower side of the first heat exchange unit 100a and enters the tube side communicating tube 40 through the upper tube plate 60 of the first heat exchange unit 100a, continuously exchanges heat along the tube side communicating tube 40 and enters the heat exchange tube 20 in the second heat exchange unit 100b, and flows out through the first gas flow outlet A2 positioned at the lower side of the second heat exchange unit 100b, so that the temperature of the gas after the reaction is reduced. The second air flow which does not pass through the methanol reactor enters the shell body 10 through the second air flow inlet B1 positioned at the lower side of the second heat exchange unit 100B and exchanges heat with the first air flow in the heat exchange tube 20, enters the shell body 10 in the first heat exchange unit 100a along the shell-side communicating tube 50 and flows out through the second air flow outlet B2 positioned at the lower side of the first heat exchange unit 100a, thereby realizing the temperature rise of the unreacted air and heating the unreacted air to a temperature higher than the catalyst activation temperature of the reactor, and being beneficial to the recovery of the steam heat produced by the reactor.
The bottom of the shell body 10 of the first heat exchange unit 100a is provided with a first drain pipe 91, and the first drain pipe 91 discharges condensate entering along the first gas flow inlet A1 to the outside of the heat exchanger. A second drain pipe 92 is provided at the bottom of the shell body 10 of the second heat exchange unit 100b, and the second drain pipe 92 drains condensate in the separated reactor outside the heat exchanger.
The side wall of the tube shell body 10 of the first heat exchange unit 100a is provided with a third liquid drain pipe 93, the side wall of the tube shell body 10 of the second heat exchange unit 100b is provided with a fourth liquid drain pipe 94, and the lower side pipe walls of the third liquid drain pipe 93 and the fourth liquid drain pipe 94 are arranged close to the upper surface of the lower pipe plate 70 so as to remove all condensate formed in the tube shell body 10.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present invention.
Claims (10)
1. A heat exchanger, comprising:
the heat exchange device comprises a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit and the second heat exchange unit respectively comprise a tube shell body, a plurality of heat exchange tubes extending along a first direction are arranged in the tube shell body, each heat exchange tube is formed by a plurality of necking sections and expanding sections which are sequentially connected, and at least one collision rod is arranged between any two heat exchange tubes;
a tube side communicating tube which communicates with a first air flow passage in the heat exchange tube of the first heat exchange unit and the heat exchange tube of the second heat exchange unit;
the shell side communicating pipe is communicated with a second airflow channel between the shell body of the first heat exchange unit and the heat exchange tube and between the shell body of the second heat exchange unit and the heat exchange tube.
2. The heat exchanger of claim 1, wherein the first heat exchange unit and the second heat exchange unit each comprise an upper tube plate and a lower tube plate fixedly connected to the shell body, the first ends of the heat exchange tubes are fixedly arranged on the upper tube plate in a penetrating manner, and the second ends of the heat exchange tubes are fixedly arranged on the lower tube plate in a penetrating manner.
3. A heat exchanger as claimed in claim 2, further comprising at least one baffle ring surrounding the outer sides of said plurality of heat exchange tubes, said plurality of rods being supported on said baffle ring.
4. A heat exchanger as claimed in claim 3 wherein said baffle ring is spaced from said upper tube sheet, said baffle ring being spaced from said lower tube sheet and adjacent said baffle ring by support bars.
5. The heat exchanger of claim 1, wherein a first port is provided at a top end of the shell body of the first heat exchange unit, a second port is provided at a top end of the shell body of the second heat exchange unit, and the first port and the second port are communicated with each other through the tube side communication tube.
6. The heat exchanger of claim 5, wherein the tube side communicating tube is an inverted U-shaped tube, and the tube side communicating tube has a tube diameter smaller than the tube shell body of the first heat exchange unit and the tube shell body of the second heat exchange unit.
7. The heat exchanger of claim 5, wherein the shell-and-tube body of the first heat exchange unit forms a diverging arc tube wall from the first interface to the upper tube sheet, and wherein the shell-and-tube body of the second heat exchange unit forms a diverging arc tube wall from the second interface to the upper tube sheet.
8. The heat exchanger of claim 2, wherein a third port is provided on a side wall of the shell-and-tube body of the first heat exchange unit, a fourth port is provided on a side wall of the shell-and-tube body of the second heat exchange unit, the third port and the fourth port are communicated with each other through the shell-side communication tube, and the shell-side communication tube is located in a region close to the upper tube plate.
9. A heat exchanger according to claim 2, wherein the shell-and-tube body of the first heat exchange unit is provided with a first gas flow inlet in the lower side region of the lower tube sheet, and the shell-and-tube body of the second heat exchange unit is provided with a first gas flow outlet in the lower side region of the lower tube sheet; the shell body of the first heat exchange unit is provided with a second airflow outlet in the upper side area of the lower tube plate, and the shell body of the second heat exchange unit is provided with a second airflow inlet in the upper side area of the lower tube plate.
10. A heat exchanger according to claim 1, wherein the bottom of the shell body of the first heat exchange unit is provided with a first drain conduit and the bottom of the shell body of the second heat exchange unit is provided with a second drain conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310198537.2A CN116336835A (en) | 2023-03-01 | 2023-03-01 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310198537.2A CN116336835A (en) | 2023-03-01 | 2023-03-01 | Heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN116336835A true CN116336835A (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310198537.2A Pending CN116336835A (en) | 2023-03-01 | 2023-03-01 | Heat exchanger |
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| CN (1) | CN116336835A (en) |
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| CN105890407A (en) * | 2016-05-31 | 2016-08-24 | 中冶焦耐工程技术有限公司 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
| CN207456218U (en) * | 2017-11-02 | 2018-06-05 | 重庆市映天辉氯碱化工有限公司 | Heat-exchange system and production system |
| CN218034523U (en) * | 2022-07-07 | 2022-12-13 | 宁夏氟峰新材料科技有限公司 | Cooling device applied to VDF degassing tower |
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2023
- 2023-03-01 CN CN202310198537.2A patent/CN116336835A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484451A (en) * | 1978-09-05 | 1984-11-27 | United Air Specialists, Inc. | Two-stage gas condenser with feedback cooling |
| CN103353240A (en) * | 2013-04-08 | 2013-10-16 | 上海万享成套制冷设备有限公司 | Condensing device and manufacturing method of cooler of condensing device |
| CN204388687U (en) * | 2014-12-15 | 2015-06-10 | 重庆气体压缩机厂有限责任公司 | Gas compressor inter-stage water cooler heat exchanger tube supporting construction |
| CN105841523A (en) * | 2016-05-31 | 2016-08-10 | 中冶焦耐工程技术有限公司 | Corrugated straight pipe heat exchanger and heat exchange method |
| CN105890407A (en) * | 2016-05-31 | 2016-08-24 | 中冶焦耐工程技术有限公司 | Self-supporting type contracted-expanded tube heat exchanger and heat exchange method |
| CN207456218U (en) * | 2017-11-02 | 2018-06-05 | 重庆市映天辉氯碱化工有限公司 | Heat-exchange system and production system |
| CN218034523U (en) * | 2022-07-07 | 2022-12-13 | 宁夏氟峰新材料科技有限公司 | Cooling device applied to VDF degassing tower |
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