CN110375564B - Jacket heat exchanger - Google Patents
Jacket heat exchanger Download PDFInfo
- Publication number
- CN110375564B CN110375564B CN201910619220.5A CN201910619220A CN110375564B CN 110375564 B CN110375564 B CN 110375564B CN 201910619220 A CN201910619220 A CN 201910619220A CN 110375564 B CN110375564 B CN 110375564B
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- Prior art keywords
- reactor
- jacket
- guide plate
- fluid
- spiral
- 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.)
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- 239000012530 fluid Substances 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- F28D7/02—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 helically coiled
- F28D7/026—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 helically coiled the conduits of only one medium being helically coiled and formed by bent members, e.g. plates, the coils having a cylindrical configuration
-
- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a jacket heat exchanger, which comprises a reactor, a jacket shell and a spiral guide plate, wherein the reactor is sleeved in the jacket shell and forms a jacket cavity with the jacket shell, the reactor is used for allowing fluid to flow through and exchange heat with materials in the reactor, the width of the spiral guide plate is adapted to the width of the jacket cavity, the spiral guide plate is arranged in the jacket cavity, and the spiral guide plate is fixed on the inner side surface of the jacket shell; the spiral guide plate is provided with a baffle device, the baffle device comprises a plurality of baffle plates, the baffle plates are uniformly arranged in a spiral channel formed by the spiral guide plate at intervals up and down along the flow direction of the fluid, the baffle plates are vertically fixed on the spiral guide plate, and the baffle plates are vertical to the flow direction of the fluid. The invention eliminates the flowing dead angle in the jacket cavity, prolongs the travel of the fluid in the jacket cavity, improves the heat exchange efficiency of the fluid and the materials in the reactor, effectively damages the laminar inner layer on the outer surface of the reactor and accelerates the heat transfer rate.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a jacket heat exchanger.
Background
Jacket heat exchangers are very commonly used industrial production equipment in various industries involving heat exchange of two fluids, such as chemical, metallurgical, pharmaceutical, electric, thermal, etc. The flow behaviour of the fluid within the jacketed heat exchanger has a significant impact on the heat transfer rate of the heat exchanger. The jacket heat exchanger operated in the current industrial production is characterized in that fluid flows through a jacket cavity and exchanges heat with materials in a container through an inner side plate. In the process, the fluid flow speed is low, the heat transfer coefficient is small, dead angles exist in the flow, so the heat transfer rate is small, and the effect is poor.
Another heat exchanger improves the jacket heat exchanger: after the circular pipeline is split, the spiral is welded on the outer side of the wall to form a spiral channel with a semicircular section, and fluid flows through the semicircular pipeline to exchange heat with materials in the container. The heat transfer area of the inner side plate of the heat exchanger is not fully utilized, the fluid flow is small, the resistance is high, and the heat exchanger is not suitable for many occasions.
Disclosure of Invention
The invention solves the technical problems of low heat exchange area utilization rate, small heat exchange coefficient, poor heat transfer effect, small fluid flow, large fluid resistance and the like of the traditional jacket heat exchanger by providing the jacket heat exchanger.
In order to solve the technical problems, the technical scheme of the invention is as follows: the novel jacket heat exchanger is characterized in that: the reactor and the jacket shell are cylindrical, the reactor is sleeved in the jacket shell and forms a jacket cavity with the jacket shell, the reactor is used for allowing fluid to flow through and exchange heat with materials in the reactor, the width of the spiral guide plate is matched with the width of the jacket cavity, the spiral guide plate is arranged in the jacket cavity and fixed on the inner side surface of the jacket shell, the bottom of the jacket shell is provided with a fluid inlet, and the upper end of the side surface is provided with a fluid outlet;
The spiral guide plate is provided with a baffle device, the baffle device comprises a plurality of baffle plates, the baffle plates are uniformly arranged in a spiral channel formed by the spiral guide plate along the flow direction of the fluid at intervals up and down, and the baffle plates are vertically fixed on the spiral guide plate and are vertical to the flow direction of the fluid.
Furthermore, a gap is reserved between the spiral guide plate and the outer side surface of the reactor, so that a small amount of fluid can pass through the gap rapidly.
Further, the side surface of the baffle plate, which is close to the jacket shell, is tightly contacted with the inner side surface of the jacket shell, the side surface of the baffle plate, which is close to the reactor, is in a circular arc shape concentric with the reactor, and the circular arc side surface is in a zigzag shape, so that part of fluid flows through a gap between the baffle plate and the reactor.
Further, the bottom end of the spiral guide plate is fixed at the bottom of the jacket shell, the top end of the spiral guide plate is fixed at the position of the fluid outlet, and the lower end and the upper end of a spiral channel formed by the spiral guide plate are respectively communicated with the fluid inlet and the fluid outlet.
Furthermore, the bottoms of the reactor and the jacket shell are concentric circular arcs which are mutually adaptive.
Further, the reactor height is higher than the jacket housing height.
Further, the baffle plate is approximately cuboid, and the baffle plate is made of metal materials.
Furthermore, the baffle plates arranged on the upper surface and the lower surface of the spiral guide plate are staggered.
Further, the number of the coils formed by the spiral guide plates, the distance between the spiral channels formed by the spiral guide plates and the number of the spiral guide plates can be adjusted according to actual needs.
Compared with the prior art, the invention has the advantages that. The beneficial effects of the production are as follows:
(1) According to the jacket heat exchanger, the spiral guide plates are arranged to enable fluid to flow through the jacket cavity along the spiral channels formed by the spiral guide plates, so that flowing dead angles in the jacket cavity are eliminated, the travel of the fluid in the jacket cavity is prolonged, the heat exchange efficiency of the fluid and the inside of the reactor is improved, and in addition, the baffle plates arranged on the upper surface and the lower surface of the spiral guide plates are staggered with each other, so that the influence of the flowing dead angles of the fluid on heat transfer can be eliminated.
(2) According to the jacket heat exchanger, the baffle plates are uniformly arranged on the spiral guide plates at the upper and lower intervals, and are perpendicular to the flow direction of fluid, so that when the fluid flows through the baffle plates, at least part of the fluid changes the flow direction and passes through the gap between the baffle plates and the spiral guide plates, the stroke of the fluid in the spiral channel is further increased, the disturbance of the fluid in the jacket cavity is aggravated, and the heat exchange efficiency of the jacket heat exchanger is further improved.
(3) According to the invention, on one hand, a gap is reserved between the spiral guide plate and the outer surface of the reactor, so that a small amount of cooling water on the outer surface of the reactor can pass through the gap rapidly, and a laminar inner layer on the outer surface of the reactor can be effectively destroyed; on the other hand, the side surface of the baffle plate close to the reactor is in a zigzag shape, so that partial fluid can rapidly flow through a gap between the baffle plate and the reactor, and the laminar inner layer of the outer surface of the reactor can be effectively destroyed. Disruption of the laminar inner layer can increase the heat transfer rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic diagram of the front structure of a jacket heat exchanger according to the present invention.
Fig. 2 is a schematic diagram of the front structure of a spiral baffle of a jacket heat exchanger according to the present invention.
Fig. 3 is a perspective view of the spiral baffle of fig. 2.
FIG. 4 is a schematic view of the baffle and reactor junction of FIG. 2.
FIG. 5 is a schematic illustration of fluid flow within a spiral channel formed by a spiral baffle of the present invention.
Wherein, 1-reactor, 2-jacket shell, 3-spiral deflector, 4-jacket cavity, 5-fluid inlet, 6-fluid outlet, 7-spiral channel, 8-baffle.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following detailed description.
The invention provides a jacket heat exchanger, which has a specific structure shown in figures 1-3 and comprises a reactor 1, a jacket shell 2 and a spiral guide plate 3, wherein the reactor 1 and the jacket shell 2 are both cylindrical, and the bottoms of the reactor 1 and the jacket shell 2 are both concentric circular arcs which are mutually adapted. The reactor 1 is sleeved in the jacket shell 2 and forms a jacket cavity 4 with the jacket shell 2, the jacket cavity 4 is used for allowing fluid to flow through and exchange heat with materials in the reactor, the width of the spiral guide plate 3 is matched with that of the jacket cavity 4, the spiral guide plate 3 is arranged in the jacket cavity 4, the spiral guide plate 3 is fixed on the inner side surface of the jacket shell 2, a gap is reserved between the spiral guide plate 3 and the outer side surface of the reactor 1 and is used for allowing a small amount of cooling water to pass through in a short circuit manner, so that an inner laminar layer on the surface of the reactor 1 is destroyed, the inner laminar layer is a layer of inner laminar layer which is necessarily present on the surface of a solid when the fluid flows along the surface of the solid, the fluid flows in a laminar flow mode on the inner laminar layer, heat can only pass through the inner laminar layer in a conduction mode, the heat transfer resistance is large, and the existence and thickness of the inner laminar layer seriously influence the heat transfer rate. The bottom of the jacket shell 2 is provided with a fluid inlet 5, and the upper end of the side face is provided with a fluid outlet 6; the bottom end of the spiral guide plate 3 is fixed at the bottom of the jacket shell 2, the top end of the spiral guide plate is fixed at the position of the fluid outlet 6, and the lower end and the upper end of a spiral channel 7 formed by the spiral guide plate 3 are respectively communicated with the fluid inlet 5 and the fluid outlet 6.
The spiral guide plate 3 is provided with a baffle device, the baffle device comprises a plurality of baffle plates 8, the baffle plates 8 are uniformly arranged in a spiral channel 7 formed by the spiral guide plate 3 at intervals up and down along the flow direction of fluid, the baffle plates 8 are vertically fixed on the spiral guide plate 3, and the baffle plates 8 are vertical to the flow direction of the fluid. The baffle plates 8 arranged on the upper surface and the lower surface of the spiral guide plate 3 are staggered, and the arrangement can effectively eliminate the influence of fluid flow dead angles on heat transfer and enhance the heat exchange effect. The baffle plate 8 is approximately cuboid, and the baffle plate 8 is made of metal materials.
The side surface of the baffle plate 8 of the jacket heat exchanger, which is close to the jacket shell 2, is tightly contacted with the inner side surface of the jacket shell 2, the side surface of the baffle plate 8, which is close to the reactor 1, is in a circular arc shape concentric with the reactor 1, and the circular arc side surface is in a zigzag shape, as shown in fig. 4, so that part of fluid rapidly flows through a gap between the baffle plate 8 and the outer surface of the reactor 1, and an inner-layer flowing layer on the outer surface of the reactor 1 is further damaged.
The height of the reactor 1 is higher than that of the jacket shell 2, and the number of coils formed by the spiral guide plates, the spacing between spiral channels formed by the spiral guide plates and the number of the spiral guide plates can be adjusted according to actual needs. The smaller the interval of the spiral channels or the larger the number of the formed coils, the larger the promotion effect on heat transfer is, and the increased number of the spiral guide plates increases the flow area of the fluid, so that the flow rate of the fluid can be increased.
The heat exchange principle of the jacket heat exchanger is as follows: the reaction of the materials in the reactor 1 releases heat, so that heat exchange fluid flows in from the fluid inlet 5 at the bottom of the jacket shell 2, and the fluid spirally flows upwards along the spiral channel 7 formed by the spiral guide plate 3, thereby eliminating dead angles of flow. In the flowing process, the travel of the fluid in the jacket cavity 4 is increased through the baffle plate 8, the flow speed is improved, the flowing direction of the fluid is continuously changed, the disturbance of the fluid in the jacket cavity is aggravated, and the heat exchange efficiency is remarkably improved, as shown in figure 5, in addition, in the gradual upward flowing process of the fluid, a small amount of fluid is short-circuited and quickly passed through a gap reserved between the spiral guide plate 3 and the reactor 1, and the laminar inner layer of the outer surface of the reactor 1 is damaged; the side surface of the baffle plate 8, which is close to the reactor 1, is in a zigzag shape, so that partial fluid can flow through a gap between the baffle plate 8 and the reactor 1 rapidly, and a laminar inner layer on the outer surface of the reactor 1 can be effectively destroyed, and the heat exchange efficiency is effectively improved due to the destruction of the laminar inner layer. After the jacket cavity 4 is gradually filled with the fluid upwards, the fluid flows out from the fluid outlet 6, and the fluid inlet 5 still continuously injects the fluid into the jacket cavity 4, so that the fluid continuously exchanges heat with the reactor 1.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention should fall within the protection scope of the present invention, and the claimed technical content of the present invention is fully described in the claims.
Claims (8)
1. A jacketed heat exchanger, characterized by: the reactor and the jacket shell are cylindrical, the reactor is sleeved in the jacket shell, a jacket cavity is formed between the reactor and the jacket shell and is used for allowing fluid to flow through and exchanging heat with materials in the reactor, the width of the spiral guide plate is adaptive to that of the jacket cavity, the spiral guide plate is arranged in the jacket cavity, the spiral guide plate is fixed on the inner side surface of the jacket shell, the bottom of the jacket shell is provided with a fluid inlet, and the upper end of the side surface is provided with a fluid outlet;
the device comprises a spiral flow guide plate, wherein a flow baffle is arranged on the spiral flow guide plate, the flow baffle comprises a plurality of flow baffle plates, the flow baffle plates are uniformly arranged in a spiral channel formed by the spiral flow guide plate at intervals up and down along the flow direction of fluid, the flow baffle plates are vertically fixed on the spiral flow guide plate, and the flow baffle plates are vertical to the flow direction of the fluid;
The side surface of the baffle plate, which is close to the jacket shell, is tightly contacted with the inner side surface of the jacket shell, the side surface of the baffle plate, which is close to the reactor, is in a circular arc shape concentric with the reactor, and the circular arc side surface is in a zigzag shape, so that part of fluid flows through a gap between the baffle plate and the inner side plate as well as between the baffle plate and the reactor.
2. A jacketed heat exchanger according to claim 1, wherein: gaps are reserved between the spiral guide plates and the outer side surface of the reactor, so that a small amount of fluid can pass through the gaps rapidly.
3. A jacketed heat exchanger according to claim 1, wherein: the bottom end of the spiral guide plate is fixed at the bottom of the jacket shell, the top end of the spiral guide plate is fixed at the position of the fluid outlet, and the lower end and the upper end of a spiral channel formed by the spiral guide plate are respectively communicated with the fluid inlet and the fluid outlet.
4. A jacketed heat exchanger according to claim 1, wherein: the bottoms of the reactor and the jacket shell are concentric circular arcs which are mutually adaptive.
5. A jacketed heat exchanger according to claim 1, wherein: the reactor height is higher than the jacket housing height.
6. A jacketed heat exchanger according to claim 1, wherein: the baffle plate is approximately cuboid, and is made of metal materials.
7. A jacketed heat exchanger according to claim 1, wherein: the baffle plates arranged on the upper surface and the lower surface of the spiral guide plate are staggered.
8. A jacketed heat exchanger according to claim 1, wherein: the number of the coils formed by the spiral guide plates, the spacing of the spiral channels formed by the spiral guide plates and the number of the spiral guide plates can be adjusted according to actual needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910619220.5A CN110375564B (en) | 2019-07-10 | 2019-07-10 | Jacket heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910619220.5A CN110375564B (en) | 2019-07-10 | 2019-07-10 | Jacket heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN110375564A CN110375564A (en) | 2019-10-25 |
| CN110375564B true CN110375564B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910619220.5A Active CN110375564B (en) | 2019-07-10 | 2019-07-10 | Jacket heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111589380B (en) * | 2020-06-18 | 2024-11-19 | 靖江神驹容器制造有限公司 | Gas Phase Reactor |
| CN112303650B (en) * | 2020-11-17 | 2025-01-07 | 江苏森茂能源发展有限公司 | A vertical regeneration oil furnace |
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