CN113899228A - Shell and tube heat exchanger - Google Patents
Shell and tube heat exchanger Download PDFInfo
- Publication number
- CN113899228A CN113899228A CN202111184570.7A CN202111184570A CN113899228A CN 113899228 A CN113899228 A CN 113899228A CN 202111184570 A CN202111184570 A CN 202111184570A CN 113899228 A CN113899228 A CN 113899228A
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- CN
- China
- Prior art keywords
- heat exchange
- tube
- shell
- spring
- heat exchanger
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- 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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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/02—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by influencing fluid boundary
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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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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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
- F28F9/22—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
- F28F2009/228—Oblique partitions
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- 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
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- 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 discloses a shell-and-tube heat exchanger, which comprises a shell, an end enclosure, a tube plate and a plurality of heat exchange tubes. Each heat exchange tube is provided with a spring which is in clearance fit with the heat exchange tube; each spring is penetrated through at least two steel wires, and each steel wire is propped against the corresponding spring and is connected with the corresponding spring through spot welding; each steel wire extends out of two ends of the corresponding heat exchange tube and is bent; a plurality of flow guide elements are arranged in each spring at the same interval, each flow guide element comprises a mandrel, a spiral piece arranged on the mandrel and two connecting plates, the two ends of the mandrel are rotatably connected with the corresponding connecting plates respectively, and each connecting plate is fixedly connected with the corresponding steel wire respectively. When the shell-and-tube heat exchanger provided by the invention is in actual use, liquid in the heat exchange tube cannot form a laminar boundary layer at the inner wall of the heat exchange tube due to the interference of the spring and the change of the path when the liquid passes through the spiral sheet of each flow guide element and impacts the inner wall of the heat exchange tube, so that the heat exchange effect is improved.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a shell-and-tube heat exchanger.
Background
Shell-and-tube heat exchangers are widely used in industrial production. How to improve the heat exchange efficiency of the shell-and-tube heat exchanger is always a problem which needs to be actually solved in industrial production. Chinese patent publication No. CN101464101A discloses a shell-and-tube heat exchanger with a heat exchange tube having a built-in spring. This patent has proposed the scheme of placing the spring in the heat exchange tube and has improved the heat transfer effect. However, the practical application is not ideal, and the concrete is as follows: (1) the outer diameter of the spring is too small (the state shown in the attached figure 1 of the specification of the patent), and the spring is far away from the inner wall of the heat exchange tube, so that the heat exchange effect of the heat exchanger is hardly influenced; in addition, in practical application, the resonance between the spring and the liquid in the pipe can hardly be realized, and the heat exchange effect of the heat exchanger is hardly improved. (2) The technical solution proposed in the aforementioned patent can only be applied to vertical heat exchangers, and for horizontal heat exchangers, the spring is too soft to pass through the heat exchange tube at all. (3) The end of the spring is inconvenient to install, and a special clamp is needed to position the end of the spring. And the spring suspension proposed by the aforementioned patent cannot fix both ends of the spring in the horizontal heat exchanger.
Therefore, a technical scheme is needed to be provided, so that the spring is convenient to mount, the heat exchange effect of the heat exchanger can be improved, and the heat exchanger can be applied to vertical and horizontal heat exchangers.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a shell-and-tube heat exchanger, and aims to solve the technical problems that the built-in spring of the shell-and-tube heat exchanger is difficult to mount and the heat exchange effect is difficult to improve in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shell-and-tube heat exchanger comprises a shell, a seal head, a tube plate and a plurality of heat exchange tubes, wherein each heat exchange tube is provided with a spring, and the springs are in clearance fit with the heat exchange tubes; each spring is penetrated through at least two steel wires, and each steel wire is propped against the corresponding spring and is connected with the corresponding spring through spot welding; each steel wire extends out of two ends of the corresponding heat exchange tube and is bent; a plurality of flow guide elements are arranged in each spring at the same interval, each flow guide element comprises a mandrel, a spiral piece arranged on the mandrel and two connecting plates, the two ends of the mandrel are rotatably connected with the corresponding connecting plates respectively, and each connecting plate is fixedly connected with the corresponding steel wire respectively.
Furthermore, in the shell-and-tube heat exchanger, two ends of the core shaft of each flow guide element are respectively provided with a circular boss, each connecting plate is respectively provided with a circular hole, and each circular boss extends into the corresponding circular hole.
Furthermore, in the shell-and-tube heat exchanger, the difference value of the outer diameter of the circular boss to the diameter of the circular hole is 2-3 mm.
Further, in the shell-and-tube heat exchanger, the mandrel and the spiral sheet are integrally formed.
Furthermore, in the shell-and-tube heat exchanger, the mandrel and the spiral sheet are made of plastics, and the connecting plate is a metal sheet.
Further, in the shell-and-tube heat exchanger, the outer diameter of each spiral sheet is larger than one half of the inner diameter of the heat exchange tube.
Further, in the shell-and-tube heat exchanger, the springs, the steel wires and the connecting plates are all made of stainless steel.
Furthermore, in the shell-and-tube heat exchanger, the diameter of each steel wire is 0.5-1 mm.
Further, in the shell-and-tube heat exchanger, the heat exchange tubes are arranged in a regular triangle manner.
Has the advantages that: compared with the prior art, the technical scheme provided by the invention at least has the following advantages: (1) the heat exchange tube has a simple structure, at least two steel wires penetrate through the spring to support the spring, and the heat exchange tube can conveniently penetrate through the spring (including a vertical state and a horizontal state). (2) The spring is in clearance fit with the inner wall of the heat exchange tube, and the flow state of liquid is disturbed by the arrangement of the plurality of flow guide elements, and a laminar flow boundary layer cannot be formed near the inner wall of the heat exchange tube, so that the heat exchange effect is improved. (3) Convenient to detach, when the heat exchanger needs to be maintained, the end of the steel wire is folded to be straight, and then the steel wire can be conveniently drawn out from the heat exchange tube.
Drawings
Fig. 1 is a front view of a shell and tube heat exchanger according to the present invention.
Fig. 2 is a side view of a spring, a wire and a flow guide member in a shell and tube heat exchanger according to the present invention.
Fig. 3 is a side view of a flow reversing member in the shell and tube heat exchanger according to the present invention.
Fig. 4 is a layout view of heat exchange tubes in the shell-and-tube heat exchanger provided by the invention.
Fig. 5 is a partially enlarged view of the region S in fig. 4.
Detailed Description
The present invention provides a shell-and-tube heat exchanger, and the purpose, technical scheme and effect of the present invention are more clear and definite, and the present invention is further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 5, the present invention provides a shell-and-tube heat exchanger. Although the drawings in the specification illustrate a horizontal heat exchanger, the invention is not limited to this, and the technical solution of the invention can also be applied to a vertical heat exchanger. Conventional components of the shell-and-tube heat exchanger are not described in detail herein. The drawings in the specification are only for explaining the structural principle and are not to scale with the actual product. Only 2 backflow elements are schematically shown in fig. 2.
The shell-and-tube heat exchanger comprises a shell 91, an end enclosure 92, a tube plate 93 and a plurality of heat exchange tubes 94, wherein each heat exchange tube is provided with a spring 1, and the spring 1 is in clearance fit with the heat exchange tubes 94 (namely, the outer diameter of the spring is smaller than the inner diameter of the heat exchange tube, and preferably, the difference between the outer diameter of the spring and the inner diameter of the heat exchange tube is smaller than 2 mm); each spring is respectively penetrated by at least two steel wires 2, and each steel wire 2 is respectively abutted against the corresponding spring and is connected by spot welding (the figure only schematically shows the positions of 6 spot welding); each steel wire extends out of two ends of the corresponding heat exchange tube and is bent; a plurality of flow guiding elements 3 are arranged in each spring at the same interval, each flow guiding element comprises a mandrel 31, a spiral piece 32 arranged on the mandrel and two connecting plates 33, two ends of the mandrel are respectively rotatably connected with the corresponding connecting plates, and each connecting plate is respectively fixedly connected (preferably spot-welded) with the corresponding steel wire. In the drawings, only two steel wires are schematically shown, but the present invention is not limited thereto in practical applications, and it is within the scope of the present invention to provide two or more steel wires.
As shown in fig. 3, preferably, the two ends of the mandrel of each flow guiding element are respectively provided with a circular boss 311, each connecting plate is respectively provided with a circular hole, and each circular boss respectively extends into the corresponding circular hole. This set up simple structure, can realize that the dabber rotationally connects in the round hole.
Preferably, the difference between the outer diameter of the circular boss and the diameter of the circular hole is 2-3 mm. The arrangement ensures that the round boss and the round hole have enough clearance, and the round boss is not easy to be blocked by dirt in practical use.
Preferably, the mandrel and the helical sheet are integrally formed.
Preferably, the mandrel and the spiral sheet are made of plastic, and the connecting plate is a metal sheet. That is, the core shaft and the helical fin are manufactured simply and at low cost by injection molding. And the connecting plate is a metal sheet, and provides enough supporting strength.
Preferably, the outer diameter of each of the spiral fins is greater than one-half of the inner diameter of the heat exchange tube. The arrangement ensures that the liquid in the pipe changes the path after passing through the spiral sheet and can flush the inner wall of the heat exchange pipe.
Preferably, the spring, the steel wire and the connecting plate are all made of stainless steel. The spring, the steel wire and the connecting plate are not easy to damage due to the arrangement, and the service life is prolonged.
Preferably, the diameter of each steel wire is 0.5-1 mm.
Preferably, the heat exchange tubes are arranged in a regular triangular manner. The arrangement not only enables the heat exchange tubes to be compactly arranged, but also facilitates the bending of the ends of the steel wires.
During actual installation, all the flow guide elements are arranged between the steel wires, then the steel wires penetrate through the springs and are spot-welded at a plurality of positions, then the springs and the steel wires penetrate through the heat exchange tube together, and two ends of the steel wires are respectively bent (as shown by dotted lines in fig. 2) and clamped on a tube plate of the heat exchanger.
After the heat exchanger is put into use, liquid is introduced into the heat exchange tube, and a laminar boundary layer cannot be formed on the inner wall of the heat exchange tube due to the interference of the spring, so that the heat exchange effect is improved. In addition, when the liquid passes through the spiral sheet of each flow guide element, the path is changed and the liquid rushes to the inner wall of the heat exchange tube, so that the liquid on the inner wall of the heat exchange tube is further disturbed, and the heat exchange effect is further improved. In addition, even if the spring needs to be disassembled in future, the end of the steel wire only needs to be folded to be straight, and the steel wire can be conveniently drawn out from the heat exchange tube.
Through the above analysis, compared with the prior art (such as the patent in the background art), the technical scheme provided by the invention has at least the following advantages: (1) the heat exchange tube has a simple structure, at least two steel wires penetrate through the spring to support the spring, and the heat exchange tube can conveniently penetrate through the spring (including a vertical state and a horizontal state). (2) The spring is in clearance fit with the inner wall of the heat exchange tube, and the flow state of liquid is disturbed by the arrangement of the plurality of flow guide elements, and a laminar flow boundary layer cannot be formed near the inner wall of the heat exchange tube, so that the heat exchange effect is improved. In other words, the working principle of the invention is different from that of the prior art, and the spring is not required to resonate with the liquid in the heat exchange tube. (3) Convenient to detach, when the heat exchanger needs to be maintained, the end of the steel wire is folded to be straight, and then the steel wire can be conveniently drawn out from the heat exchange tube.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (9)
1. A shell-and-tube heat exchanger, including the body, the end enclosure, the tube sheet, and several heat exchange tubes, characterized by that, there is a spring in each heat exchange tube separately, the spring is in clearance fit with heat exchange tube; each spring is penetrated through at least two steel wires, and each steel wire is propped against the corresponding spring and is connected with the corresponding spring through spot welding; each steel wire extends out of two ends of the corresponding heat exchange tube and is bent; a plurality of flow guide elements are arranged in each spring at the same interval, each flow guide element comprises a mandrel, a spiral piece arranged on the mandrel and two connecting plates, the two ends of the mandrel are rotatably connected with the corresponding connecting plates respectively, and each connecting plate is fixedly connected with the corresponding steel wire respectively.
2. A shell and tube heat exchanger according to claim 1, characterized in that the mandrel of each flow guiding element is provided with a circular boss at each end, each connecting plate is provided with a circular hole, and each circular boss extends into the corresponding circular hole.
3. A shell and tube heat exchanger according to claim 2, characterized in that the difference between the outer diameter of the circular boss and the diameter of the circular hole is 2-3 mm.
4. A shell and tube heat exchanger according to claim 2, characterized in that the mandrel and the spiral sheet are formed integrally.
5. A shell and tube heat exchanger according to claim 3, characterized in that the mandrel and the spiral sheets are made of plastic and the connection plates are metal sheets.
6. A shell and tube heat exchanger according to claim 2, wherein the outer diameter of each spiral fin is greater than one-half of the inner diameter of the heat exchange tube.
7. A shell and tube heat exchanger according to claim 1, characterized in that the springs, wires and webs are all made of stainless steel.
8. A shell and tube heat exchanger according to claim 1, wherein each steel wire has a diameter of 0.5-1 mm.
9. A shell and tube heat exchanger according to claim 1, characterized in that the heat exchange tubes are arranged in a regular triangular pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184570.7A CN113899228B (en) | 2021-10-12 | 2021-10-12 | Shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184570.7A CN113899228B (en) | 2021-10-12 | 2021-10-12 | Shell-and-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113899228A true CN113899228A (en) | 2022-01-07 |
| CN113899228B CN113899228B (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111184570.7A Active CN113899228B (en) | 2021-10-12 | 2021-10-12 | Shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN113899228B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389904A (en) * | 2005-12-05 | 2009-03-18 | 西门子公司 | Steam generator tube, method of manufacturing the same and once-through steam generator |
| CN101968332A (en) * | 2010-09-20 | 2011-02-09 | 北京华夏壹泰科技有限公司 | EHT (Extra High Tension) self-cleaning energy-saving environment-friendly device and manufacture method thereof |
| DE102010047364A1 (en) * | 2010-10-05 | 2012-04-05 | Rwe Rheinland Westfalen Netz Ag | Wirbulator insert for heat exchangers with tubular heat transfer surfaces |
| CN202281546U (en) * | 2011-02-16 | 2012-06-20 | 湖南工业大学 | Heat-transfer pipe inner wedged pressure type helical wheel string automatic cleaning mechanism |
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN104154805A (en) * | 2014-08-07 | 2014-11-19 | 北京化工大学 | Interphase blade self-oscillation rotor |
| CN207515578U (en) * | 2017-10-20 | 2018-06-19 | 王海燕 | A kind of energy saving Water conservancy diversion core for tubular heat exchanger |
| CN210070718U (en) * | 2019-04-24 | 2020-02-14 | 北京化工大学 | Inner helical ribbon type rotor of heat exchange tube |
-
2021
- 2021-10-12 CN CN202111184570.7A patent/CN113899228B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389904A (en) * | 2005-12-05 | 2009-03-18 | 西门子公司 | Steam generator tube, method of manufacturing the same and once-through steam generator |
| CN101968332A (en) * | 2010-09-20 | 2011-02-09 | 北京华夏壹泰科技有限公司 | EHT (Extra High Tension) self-cleaning energy-saving environment-friendly device and manufacture method thereof |
| DE102010047364A1 (en) * | 2010-10-05 | 2012-04-05 | Rwe Rheinland Westfalen Netz Ag | Wirbulator insert for heat exchangers with tubular heat transfer surfaces |
| CN202281546U (en) * | 2011-02-16 | 2012-06-20 | 湖南工业大学 | Heat-transfer pipe inner wedged pressure type helical wheel string automatic cleaning mechanism |
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN104154805A (en) * | 2014-08-07 | 2014-11-19 | 北京化工大学 | Interphase blade self-oscillation rotor |
| CN207515578U (en) * | 2017-10-20 | 2018-06-19 | 王海燕 | A kind of energy saving Water conservancy diversion core for tubular heat exchanger |
| CN210070718U (en) * | 2019-04-24 | 2020-02-14 | 北京化工大学 | Inner helical ribbon type rotor of heat exchange tube |
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| Publication number | Publication date |
|---|---|
| CN113899228B (en) | 2023-07-14 |
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