Composite shell-and-tube heat exchanger
By installing heat transfer tubes inside heat transfer tubes and setting baffles inside the cylinder, the problems of low heat transfer efficiency and high processing difficulty in traditional serpentine tube heat exchangers are solved, achieving more efficient fluid heat exchange and lower manufacturing costs.
Patent Information
- Application Number
- CN202520479035.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing serpentine heat exchanger structures, the heat transfer tubes and coils cannot make close contact, resulting in low heat exchange efficiency. Furthermore, the coils are difficult to manufacture under special structural dimensions, which limits the number of baffles that can be installed and reduces the heating exchange effect.
A heat transfer tube structure is installed inside the heat transfer tube to achieve comprehensive heat exchange between the inside and outside. Multiple baffles are set inside the cylinder to form a baffle channel with multiple reversals, eliminating the traditional coil structure and increasing the number of baffles.
It improves the heat exchange efficiency of the fluid, reduces the size of the device and the manufacturing cost, and achieves a more efficient fluid heat exchange effect.
Smart Images
Figure CN223896646U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat exchangers, in particular to a composite tube type heat exchanger. BACKGROUND
[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. The heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures, and is a device that transfers heat from a fluid at a higher temperature to a fluid at a lower temperature to meet the process requirements, while also improving energy utilization.
[0003] The main coil (or called coil) of the existing coil type (or tube type) heat exchanger is mainly wound on the outside of the heat exchange cylinder. The heat transfer pipe inside the heat exchange cylinder does not contact the coil, which cannot achieve better heat exchange, is not conducive to efficient production needs, and also causes a certain waste of energy. In a heat exchanger with special structure and size, the coil is not convenient to process and manufacture, and the structure and size further limit the installation number of the baffle, the fluid is limited to the number of baffle times, which reduces the heating exchange effect; thus the size and processing difficulty of the equipment will increase, and the efficient heat exchange needs cannot be met. SUMMARY
[0004] (I) Technical problems to be solved
[0005] In order to solve the problems existing in the above background art, the present application designs a composite tube type heat exchanger, which adopts the structure of a heat transfer pipe inside a heat transfer pipe inside the heat exchanger. The internal and external comprehensive heat exchange of the conventional heat transfer pipe can achieve more sufficient heat exchange of three fluids; at the same time, more baffle plates can be realized, and fewer number of tubes can obtain greater heat exchange effect.
[0006] (II) Technical solutions
[0007] In order to achieve the above purpose, the present application provides the following technical solutions:
[0008] A composite tube type heat exchanger, comprising:
[0009] A first tube box, which is a disc-shaped structure with one side open and is sealingly connected to one side of a first tube plate, and a through hole is provided in the middle of the other side of the first tube box, and a first connecting pipe is communicated at the through hole and is fixedly connected to the first tube box;
[0010] A second tube box, which is a cylindrical structure as a whole, and one side of the second tube box is sealingly connected to the other side of the first tube plate, and the other side of the second tube box is sealingly connected to one side of a second tube plate;
[0011] The barrel body is a long cylindrical structure, one end of the barrel body is sealingly connected to the other side of the second tube plate, and the other end of the barrel body is sealingly connected to one side of the third tube plate;
[0012] The third tube box is a cylindrical structure, one side of the third tube box is sealingly connected to the third tube plate, and the other side of the third tube box is sealingly connected to one side of the fourth tube plate;
[0013] The fourth tube box is a disc-shaped structure with an opening on one side and is sealingly connected to the other side of the fourth tube plate, and the other side of the fourth tube box is provided with a through hole in the middle, and the fourth connecting pipe is connected to the through hole and is fixedly connected to the third tube box;
[0014] The first heat transfer pipe is sealingly connected between one end of the first heat transfer pipe and the first tube plate, and the other end of the first heat transfer pipe is sealingly connected between the other end of the first heat transfer pipe and the fourth tube plate;
[0015] The second heat transfer pipe is sleeved outside the first heat transfer pipe, and the heat transfer pipe channel is formed between the first heat transfer pipe and the second heat transfer pipe, one end of the second heat transfer pipe is sealingly connected between the one end of the second heat transfer pipe and the second tube plate, and the other end of the second heat transfer pipe is sealingly connected between the other end of the second heat transfer pipe and the third tube plate.
[0016] As a preferred technical solution of the above step, the sixth connecting pipe is connected to the second tube box between the first tube plate and the second tube plate, the third connecting pipe is connected to the third tube box between the third tube plate and the fourth tube plate, and the sixth connecting pipe is connected to the third connecting pipe through the second heat transfer pipe.
[0017] As a preferred technical solution of the above step, the third connecting pipe is arranged on the lower surface of the third tube box and is a liquid inlet port, and the sixth connecting pipe is arranged on the upper surface of the second tube box and is a liquid outlet port.
[0018] As a preferred technical solution of the above step, the second connecting pipe and the fifth connecting pipe are connected to the barrel body between the second tube plate and the third tube plate, and the second connecting pipe is connected to the fifth connecting pipe through the second tube box.
[0019] As a preferred technical solution of the above step, the second connecting pipe is arranged on the lower surface of the barrel body and is a liquid inlet port, and the fifth connecting pipe is arranged on the upper surface of the barrel body and is a liquid outlet port.
[0020] As the preferred technical scheme of the previous step, a plurality of baffle plates are arranged inside the barrel body between the second tube plate and the third tube plate, and a baffle plate gap is formed between the upper end or the lower end of the baffle plate and the inner wall of the second tube box, and the baffle plate gaps of adjacent baffle plates are alternately arranged in the direction of gravity.
[0021] As the preferred technical scheme of the previous step, a plurality of through holes are arranged on the baffle plate, and the through holes are used for the second heat transfer pipe to pass through the baffle plate, and the baffle plates form a plurality of reversing baffle flow channels, and the baffle flow channel is a serpentine structure.
[0022] As the preferred technical scheme of the previous step, a base is arranged at the bottom of the barrel body, and the base is used to support the heat exchanger.
[0023] (Three) beneficial effects
[0024] The application provides a composite tube type heat exchanger, which has the following beneficial effects:
[0025] 1. The product of the application further arranges a heat transfer pipe inside the heat transfer pipe inside the barrel body, replaces the traditional coil structure, can solve the problem of low heat exchange efficiency inside and outside the large heat transfer pipe, can simultaneously perform heat exchange on the inside and outside of the second heat transfer pipe, and better realizes more sufficient heat exchange of three fluids.
[0026] 2. The product of the application is provided with a plurality of baffle plates arranged at intervals inside the barrel body, and the baffle plates form a plurality of reversals, which can change the direction of the fluid multiple times and improve the heat exchange effect.
[0027] 3. The product of the application cancels the coil structure, and further can arrange more baffle plates inside, so that the fluid therein can be baffle-flowed more times, and the heat exchange effect is improved.
[0028] 4. The product of the application adopts the structure of the heat transfer pipe inside the heat transfer pipe, which can improve the heat exchange effect while reducing the overall size of the device, reducing the number of heat transfer pipes, and further reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 It is a front view of the application;
[0030] Figure 2 It is a left view of the application;
[0031] Figure 3 It is a sectional view of the application;
[0032] Figure 4 It is a front view of the application Figure 3 in a direction;
[0033] Figure 5 It is a front view of the application Figure 3 in a direction b-b;
[0034] Figure 6 This is a schematic diagram of the heat transfer tube structure of this application.
[0035] Among them, 1. First tube box, 2. First tube sheet, 3. First connecting pipe, 4. First heat transfer tube, 5. Second heat transfer tube, 6. Second tube box, 7. Second tube sheet, 8. Second connecting pipe, 9. Base, 10. Cylinder body, 11. Baffle plate, 12. Baffle channel, 13. Third tube sheet, 14. Third connecting pipe, 15. Fourth tube sheet, 16. Fourth tube box, 17. Fourth connecting pipe, 18. Third tube box, 19. Fifth connecting pipe, 20. Sixth connecting pipe, 21. Baffle plate notch, 22. Heat transfer tube channel. Detailed Implementation
[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example
[0037] like Figures 1-6 As shown, a composite tube-and-shell heat exchanger of this application includes: a first tube box 1, a first tube sheet 2, a first connecting pipe 3, a first heat transfer tube 4, a second heat transfer tube 5, a second tube box 6, a second tube sheet 7, a second connecting pipe 8, a base 9, a shell 10, a baffle plate 11, a third tube sheet 13, a third connecting pipe 14, a fourth tube sheet 15, a fourth tube box 16, a fourth connecting pipe 17, a third tube box 18, a fifth connecting pipe 19, and a sixth connecting pipe 20.
[0038] The first pipe box 1 of the application is fixedly connected with the first connecting pipe 3 on the left side, preferably, the first pipe box 1 is sealingly welded with the first connecting pipe 3 on the left side; the first pipe box 1 is fixedly connected with the left side of the first tube plate 2 on the right side, preferably, the first pipe box 1 is sealingly welded with the left side of the first tube plate 2 on the right side, and the first connecting pipe 3 is arranged in communication with the first pipe box 1. The left side of the second pipe box 6 of the application is fixedly connected with the right end of the first tube plate 2, preferably, the left side of the second pipe box 6 is sealingly welded with the first tube plate 2; the right side of the second pipe box 6 is fixedly connected with the left end of the second tube plate 7, preferably, the right side of the second pipe box 6 is sealingly welded with the left end of the second tube plate 7. The sixth connecting pipe 20 of the application is fixedly connected with the top of the second pipe box 6 and is in communication with the inside of the second pipe box 6, preferably, the sixth connecting pipe 20 is sealingly welded with the top of the second pipe box 6; the right end of the second tube plate 7 is fixedly connected with the left end of the cylinder body 10, preferably, the right end of the second tube plate 7 is sealingly welded with the left end of the cylinder body 10; the right end of the cylinder body 10 is fixedly connected with the left end of the third tube plate 13, preferably, the right end of the cylinder body 10 is sealingly welded with the left end of the third tube plate 13, wherein the left side of the cylinder body 10 is provided with the second connecting pipe 8 at the bottom, the right side of the cylinder body 10 is provided with the fifth connecting pipe 19 at the top, the second connecting pipe 8, the fifth connecting pipe 19 and the cylinder body 10 are in communication, in order to be more stable when placing the whole heat exchanger, the bottom of the cylinder body 10 of the application is provided with the base 9, which is used to support the whole equipment. The right end of the third tube plate 13 is fixedly connected with the left end of the third pipe box 18, preferably, the right end of the third tube plate 13 is sealingly welded with the left end of the third pipe box 18, the right end of the third pipe box 18 is fixedly connected with the left end of the fourth tube plate 15, preferably, the right end of the third pipe box 18 is sealingly welded with the left end of the fourth tube plate 15, the lower end of the third pipe box 18 is fixedly connected with the third connecting pipe 14, preferably, the lower end of the third pipe box 18 is sealingly welded with the third connecting pipe 14, the third connecting pipe 14 is in communication with the inside of the third pipe box 18, the right end of the fourth tube plate 15 is fixedly connected with the left end of the fourth pipe box 16, preferably, the right end of the fourth tube plate 15 is sealingly welded with the left end of the fourth pipe box 16, the right end of the fourth pipe box 16 is fixedly connected with the fourth connecting pipe 17, preferably, the right end of the fourth pipe box 16 is sealingly welded with the fourth connecting pipe 17, the fourth pipe box 16 and the fourth connecting pipe 17 are in communication.
[0039] The first heat transfer pipe 4 and the second heat transfer pipe 5 of the application are provided with multiple groups, wherein the outer walls of the left and right ends of the second heat transfer pipe 5 are respectively sealed and welded with the second tube plate 7 and the third tube plate 13, and the second tube plate 7 and the third tube plate 13 are communicated through the second heat transfer pipe 5, the outer walls of the left and right ends of the first heat transfer pipe 4 are respectively fixedly connected with the first tube plate 2 and the fourth tube plate 15 after the first heat transfer pipe 4 passes through the second heat transfer pipe 5, preferably, the outer walls of the left and right ends of the first heat transfer pipe 4 are respectively sealed and welded with the first tube plate 2 and the fourth tube plate 15, and the first tube box 1 and the fourth tube box 16 are communicated through the first heat transfer pipe 4, the first heat transfer pipe 4 is used for flowing of the fluid B1 to the B2 end, and the heat transfer pipe channel 22 is provided between the first heat transfer pipe 4 and the second heat transfer pipe 5 and is used for flowing of the fluid A1 to the A2 end.
[0040] The second tube plate 7 and the third tube plate 13 of the application are provided with a plurality of baffle plates 11, the second heat transfer pipe 5 of the application passes through the baffle plate 11, one end of the baffle plate 11 is a baffle plate gap 21, the baffle plate gaps 21 of adjacent baffle plates 11 are alternately and interval arranged in the direction of gravity, the baffle plates 11 form a baffle flow channel 12 which can be reversed multiple times, the direction of the fluid C1 flowing to the C2 end can be changed multiple times, and the heat exchange effect is improved.
[0041] Specific implementation process:
[0042] The fluid B enters the first tube box 1 from the B1 end of the first connecting pipe 3, then enters the fourth tube box 16 from the first heat transfer pipe 4, and finally flows out from the fourth connecting pipe 17, the fluid B can exchange heat with the fluid A in the second tube box 6, in the heat transfer pipe channel 22 of the second heat transfer pipe 5 and in the third tube box 18, that is, the first heat transfer pipe 4 mainly exchanges heat with the inside of the second heat transfer pipe 5.
[0043] The fluid A enters the third tube box 18 from the A1 end of the third connecting pipe 14, then flows to the second tube box 6 through the second heat transfer pipe 5, and finally flows out from the sixth connecting pipe 20, in this process, the fluid A can exchange heat not only with the first heat transfer pipe 4 but also with the fluid C in the barrel body 10.
[0044] The fluid C enters the barrel body 10 from the C1 end of the second connecting pipe 8, and is baffle-flowed multiple times under the action of the baffle plate 11, so that the fluid C can exchange heat with the fluid B in the second heat transfer pipe 5, and finally flows out from the C2 end of the fifth connecting pipe 19, the baffle plates 11 form a baffle flow channel 12 which can be reversed multiple times, the direction of the fluid C1 flowing to the C2 end can be changed multiple times, and the heat exchange effect is improved, that is, the fluid in the baffle flow channel 12 mainly exchanges heat with the outside of the second heat transfer pipe 5.
[0045] The above achieves the design purpose.
[0046] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions and do not necessarily require or imply any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without further constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0047] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents. In view of the foregoing, it will be seen that the several objects of the application are achieved.
Claims
1. A composite tube-and-shell heat exchanger, characterized in that, include: The first pipe box (1) is a disc-shaped structure with one side open and sealed to one side of the first pipe plate (2). A through hole is provided in the middle of the other side of the first pipe box (1), and a first connecting pipe (3) is connected to the through hole. The first connecting pipe (3) is fixedly connected to the first pipe box (1). The second tube box (6) is a cylindrical structure. One side of the second tube box (6) is sealed to the other side of the first tube plate (2), and the other side of the second tube box (6) is sealed to one side of the second tube plate (7). The cylinder body (10) is an overall long cylindrical structure. One end of the cylinder body (10) is sealed to the other side of the second tube sheet (7), and the other end of the cylinder body (10) is sealed to one side of the third tube sheet (13). The third tube box (18) is an integral cylindrical structure. One side of the third tube box (18) is sealed to the third tube plate (13), and the other side of the third tube box (18) is sealed to one side of the fourth tube plate (15). The fourth pipe box (16) has a disc-shaped structure with an opening on one side and is sealed to the other side of the fourth pipe plate (15). A through hole is provided in the middle of the other side of the fourth pipe box (16), and a fourth connecting pipe (17) is connected to the through hole. The fourth connecting pipe (17) is fixedly connected to the third pipe box (18). The first heat transfer tube (4) has one end passing through a through hole on the first tube sheet (2) and communicating with the first tube box (1). The first heat transfer tube (4) is sealed to the first tube sheet (2). The other end of the first heat transfer tube (4) passes through a through hole on the fourth tube sheet (15) and communicates with the fourth tube box (16). The other end of the first heat transfer tube (4) is sealed to the fourth tube sheet (15). The second heat transfer tube (5) is fitted on the outside of the first heat transfer tube (4). A heat transfer tube channel (22) is formed between the first heat transfer tube (4) and the second heat transfer tube (5). One end of the second heat transfer tube (5) passes through a through hole set on the second tube sheet (7) and is connected to one end of the second tube box (6). One end of the second heat transfer tube (5) is sealed to the second tube sheet (7). The other end of the second heat transfer tube (5) passes through a through hole set on the third tube sheet (13) and is connected to the other end of the second tube box (6). The other end of the second heat transfer tube (5) is sealed to the third tube sheet (13).
2. The composite tube-and-shell heat exchanger according to claim 1, characterized in that: A sixth connecting pipe (20) is connected to the second tube box (6) between the first tube sheet (2) and the second tube sheet (7), and a third connecting pipe (14) is connected to the third tube box (18) between the third tube sheet (13) and the fourth tube sheet (15). The sixth connecting pipe (20) is connected to the third connecting pipe (14) through the second heat transfer pipe (5).
3. A composite tube-and-shell heat exchanger according to claim 2, characterized in that: The third connector (14) is located on the lower surface of the third tube box (18) and serves as the inlet port, while the sixth connector (20) is located on the upper surface of the second tube box (6) and serves as the outlet port.
4. A composite tube-and-shell heat exchanger according to claim 1, characterized in that: A second connector (8) and a fifth connector (19) are connected in a cylindrical body (10) between the second tube sheet (7) and the third tube sheet (13). The second connector (8) is connected to the fifth connector (19) through the second tube box (6).
5. A composite tube-and-shell heat exchanger according to claim 4, characterized in that: The second connector (8) is located on the lower surface of the cylinder (10) and serves as the liquid inlet port, while the fifth connector (19) is located on the upper surface of the cylinder (10) and serves as the liquid outlet port.
6. A composite tube-and-shell heat exchanger according to claim 1, characterized in that: A plurality of baffles (11) are provided inside the cylinder (10) between the second tube sheet (7) and the third tube sheet (13). A baffle notch (21) is formed between the upper or lower end of the baffle (11) and the inner wall of the second tube box (6). The baffle notches (21) of adjacent baffles (11) are arranged alternately in the direction of gravity.
7. A composite tube-and-shell heat exchanger according to claim 6, characterized in that: The baffle plate (11) is provided with several through holes, and the through holes are used for the second heat transfer tube (5) to pass through the baffle plate (11). The baffle plates (11) form a baffle channel (12) with multiple reversals, and the baffle channel (12) has a serpentine structure.
8. A composite tube-and-shell heat exchanger according to claim 1, characterized in that: The bottom of the cylinder (10) is provided with a base (9), which is used to support the heat exchanger.