Vertical heat exchanger

Abstract

The application discloses a vertical heat exchanger and relates to the technical field. The heat exchanger comprises a heat exchanger main body, an auxiliary heat exchanger assembly connected to the outside of the heat exchanger main body and a mandrel connected to the inside of the heat exchanger main body. A guide space is formed between the auxiliary heat exchanger assembly and the heat exchanger main body. The mandrel is provided with a flow channel for smoke flow. The heat exchanger is favorable for guiding the fluid inside the heat exchanger, better heating or cooling the second heat exchange medium in the heat exchanger main body, enhancing the heat exchange efficiency and improving the heat exchange effect. The smoke generated by the engine is collected from the flow channel in the inside of the mandrel, and the waste heat generated by the smoke exchanges heat with the second heat exchange medium in the heat exchanger main body, further improving the heat exchange efficiency.

Description

Technical Field

[0001] This invention belongs to the field of heat exchanger technology, and specifically relates to a vertical heat exchanger. Background Technology

[0002] A heat exchanger is a device that transfers heat from one heat transfer medium to another. Commonly used heat exchangers include plate heat exchangers and tubular heat exchangers. In chloride-salt environments, such as marine environments and saline-alkali areas, seawater is often used as the cooling medium. The dynamic interaction between seawater and the environment can cause physical corrosion. Therefore, if a plate heat exchanger is used, the plates must be made of titanium alloy, resulting in high manufacturing costs. Furthermore, the long sealing perimeter of a plate heat exchanger increases the risk of leakage and poses significant safety hazards, making it difficult to guarantee safe operation. Therefore, tubular heat exchangers are more commonly used in chloride-salt environments.

[0003] However, most existing tubular heat exchangers are horizontally placed, which occupies a large area. Due to limited space on ships, using this type of heat exchanger increases the usable area, restricting the installation space for other shipboard monitoring equipment. Therefore, a vertically placed tubular heat exchanger is needed, requiring a shorter length to reduce the footprint, simplify the structure, and enhance heat exchange efficiency. However, existing vertical heat exchangers have complex structures, making it impossible to simplify the structure while simultaneously reducing the footprint and length. For example, patent application number CN201710496322.3, entitled "Vertical Heat Exchanger," requires the arrangement of heat pipes, guide pipes, and fixing strips. The heat pipes are spirally distributed inside the heat exchange tower. The liquid increases the circulation time inside the heat exchange tower by passing through the spiral heat pipes. This increases the heat exchange effect by increasing the heat exchange stroke. However, increasing the heat exchange stroke actually reduces the heat exchange efficiency because it increases the heat exchange time. Moreover, the bent heat pipes increase the resistance to liquid flow, causing fluid loss. In addition, additional fixing strips are required to support the bent heat pipes, increasing the complexity of the structure. Summary of the Invention

[0004] This invention provides a vertical heat exchanger to solve the problem of shortening the heat exchanger stroke, simplifying the structure, and enhancing heat exchange efficiency at the same time.

[0005] The technical solution adopted in this invention is as follows:

[0006] A vertical heat exchanger includes a heat exchanger body, an auxiliary heat exchange assembly connected outside the heat exchanger body, and a mandrel connected inside the heat exchanger body; a guide space is formed between the auxiliary heat exchange assembly and the heat exchanger body; the mandrel has a flow channel for flue gas flow.

[0007] The vertical heat exchanger of the present invention also has the following additional technical features:

[0008] The auxiliary heat exchange assembly includes a connecting shell and a connecting member connected together; the connecting member has a first opening, and there is a gap between the first opening and the heat exchanger body to form a heat exchange channel communicating with the guide space, through which the first heat exchange medium enters and exits the guide space.

[0009] The heat exchanger body includes a shell and a heat exchange component connected inside the shell; a heat exchange space is formed between the interior of the heat exchange component and the shell, and a first flow guide space communicating with the heat exchange component is reserved between one side of the heat exchange component and the shell; a second flow guide space communicating with the heat exchange component is reserved between the other side of the heat exchange component and the shell.

[0010] The flow channel is along the axial direction of the mandrel; the flow channel has an inlet end for flue gas to enter and an outlet end for flue gas to exit.

[0011] The radial width of the inlet end of the mandrel is greater than the radial width of the outlet end of the mandrel, so as to increase the support area of ​​the inlet end of the mandrel.

[0012] The housing has a connecting hole that communicates with the connecting shell, through which the first heat exchange medium in the guide space enters and exits the heat exchange space for heat exchange.

[0013] The housing has a second opening corresponding to the first opening, the second opening being in communication with the heat exchange space, the first heat exchange medium flowing into the heat exchange space through the first opening and out of the heat exchange space through the second opening; or, the first heat exchange medium flowing into the heat exchange space through the second opening and out of the heat exchange space through the first opening.

[0014] The housing is also connected to a first connecting pipe for the entry of the second heat exchange medium and a second connecting pipe for the exit of the second heat exchange medium; the first connecting pipe is connected to the first flow guiding space; the second connecting pipe is connected to the second flow guiding space.

[0015] The heat exchange assembly includes a baffle plate and a plurality of heat exchange tubes; the baffle plate extends spirally along the axial direction of the plurality of heat exchange tubes and is connected to the plurality of heat exchange tubes.

[0016] The connecting hole is inclined toward the heat exchange space so that the first heat exchange medium is introduced into the heat exchange space along the connecting hole.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are as follows:

[0018] 1. A vertical heat exchanger, comprising a heat exchanger body, an auxiliary heat exchange assembly connected outside the heat exchanger body, and a mandrel connected inside the heat exchanger body; the heat exchanger body has a heat exchange space inside; the heat exchange space is used to realize heat exchange; a guide space is formed between the auxiliary heat exchange assembly and the heat exchanger body; the guide space is used to realize the introduction of a first heat exchange medium; the guide space outside the heat exchange space forms a double-layer structure, which on the one hand is conducive to the fluid flow inside the heat exchanger, better heating or cooling of the second heat exchange medium inside the heat exchanger body, enhancing heat exchange efficiency and improving heat exchange effect; on the other hand, the heat exchanger body has a reduced external pressure calculation length, and the double-layer design can reduce the wall thickness, which is conducive to saving materials and reducing costs.

[0019] In addition, the mandrel has a flow channel for flue gas circulation; the flue gas generated by the engine of a ship or other equipment can be collected from the internal flow channel of the mandrel, which reduces environmental pollution on the one hand, and fully recovers and utilizes the flue gas on the other hand, and uses the waste heat generated by the flue gas to exchange heat with the second heat exchange medium inside the heat exchanger body, further improving the heat exchange efficiency.

[0020] 2. In a preferred embodiment of the present invention, the auxiliary heat exchange assembly includes a connecting shell and a connecting member connected together; the connecting member has a first opening, and a gap exists between the first opening and the heat exchanger body to form a heat exchange channel communicating with the heat exchange space, through which the first heat exchange medium enters and exits the guide space. The guide space is located outside the heat exchange space, and the first heat exchange medium flows through the first opening and the heat exchange channel into and out of the guide space; the guide space has the function of guiding the flow of the first heat exchange medium, so that the fluid concentrates and converges in the guide space before flowing into the heat exchange space, avoiding fluid dispersion, enhancing the flow and cohesion of heat exchange, and making it more conducive to concentrated heat exchange, thereby enhancing the heat exchange efficiency of the entire heat exchanger.

[0021] 3. In a preferred embodiment of the present invention, the heat exchanger body includes a shell and a heat exchange component connected inside the shell; the heat exchange component has a heat exchange space inside, and a first flow guiding space communicating with the heat exchange component is reserved between one side of the heat exchange component and the shell; a second flow guiding space communicating with the heat exchange component is reserved between the other side of the heat exchange component and the shell. The first flow guiding space serves as the inflow space for the second heat exchange medium for heat exchange, and the second flow guiding space serves as the outflow space for the second heat exchange medium for heat exchange; the first heat exchange medium does not enter the heat exchange space through the first flow guiding space, but directly enters the heat exchange space through the guiding space and then flows out from the heat exchange space; therefore, the first flow guiding space and the second flow guiding space are set to achieve the separation of the first heat exchange medium and the second heat exchange medium, realize a reasonable heat exchange path, and enhance the heat exchange efficiency.

[0022] 4. In a preferred embodiment of the present invention, the radial width of the inlet end of the mandrel is greater than the radial width of the outlet end of the mandrel, thereby increasing the support area of ​​the inlet end of the mandrel. Since the heat exchanger adopts a vertical structure, the diameter of the inlet end of the mandrel is larger than the diameter of the outlet end. The inlet end is typically located at the bottom of the heat exchanger; that is, the mandrel adopts a structure that is thicker at the bottom and thinner at the top. This strengthens the support of the heat exchanger, achieving higher stability and being more conducive to the stable support of large heat exchangers.

[0023] 5. In a preferred embodiment of the present invention, the shell is provided with a connecting hole communicating with the connecting shell, for the first heat exchange medium to enter and exit the heat exchange space through the connecting hole for heat exchange. The connecting hole is inclined towards the heat exchange space, which facilitates the smooth flow of the first heat exchange medium (which is liquid) into the heat exchange space under its own weight, preventing liquid residue in the guiding space, avoiding loss of the first heat exchange medium, preventing the first heat exchange medium from clogging the connecting hole, improving dehydration performance, increasing outflow velocity, and enhancing heat exchange efficiency. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a structural diagram of a vertical heat exchanger according to one embodiment of the present invention;

[0026] Figure 2 This is an internal structural diagram of a vertical heat exchanger according to one embodiment of the present invention.

[0027] 1. Heat exchanger body; 11. Shell;

[0028] 2. Auxiliary heat exchange components; 21. Connecting shell; 22. Connecting parts;

[0029] 3 heat exchange components, 31 baffles, 32 heat exchange tubes;

[0030] 4. Mandrel, 5. Flow channel, 6. First opening, 7. Heat exchange channel, 8. Guide space, 9. First flow guide space, 10. Second flow guide space, 12. Heat exchange space, 13. Second opening, 14. Inlet end, 15. Outlet end, 16. Connecting hole, 17. First connecting pipe, 18. Second connecting pipe. Detailed Implementation

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0032] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0036] This invention relates to a vertical heat exchanger, such as... Figure 1-2 As shown, it includes a heat exchanger body 1, an auxiliary heat exchange component 2 connected to the outside of the heat exchanger body 1, and a mandrel 4 connected to the inside of the heat exchanger body 1; the heat exchanger body 1 has a heat exchange space 12 inside; a guide space 8 is formed between the auxiliary heat exchange component 2 and the heat exchanger body 1; the mandrel 4 has a flow channel 5 for flue gas flow.

[0037] The second heat exchange medium completes heat exchange within the heat exchange space 12 inside the heat exchanger body 1. An auxiliary heat exchange component 2 is arranged on the outside of the heat exchanger body 1, forming a guide space 8 between the auxiliary heat exchange component 2 and the heat exchanger body 1. The guide space 8 and the heat exchange space 12 together serve as the flow space for the first heat exchange medium. Under the fluid guidance of the guide space 8, the first heat exchange medium converges into the heat exchange space 12 for concentrated heat exchange, achieving stable and continuous heat exchange and improving heat exchange efficiency. Furthermore, the first heat exchange medium is first stored in the guide space 8, which enables heat conduction to the inner wall of the guide space 8. The heat exchanger body 1 is located within the guide space 8, which acts as a heat lock for the heat exchanger body 1, preventing heat loss and providing a certain degree of auxiliary heat exchange, further enhancing the overall heat exchange effect of the heat exchanger.

[0038] Both the heat exchanger body 1 and the auxiliary heat exchange component 2 adopt a tubular structure. The auxiliary heat exchange component 2 is sleeved on the outside of the heat exchanger body 1, forming a double-layer tube structure. This structure can not only guide the fluid flow and enhance the heat exchange efficiency, but also shorten the length of the heat exchanger body 1 due to external pressure calculation. The double-layer structure can further reduce the wall thickness of the heat exchanger body 1 and the auxiliary heat exchange component 2 at this point, thus saving costs.

[0039] The mandrel 4 is located inside the heat exchanger body 1. The mandrel 4 has a flow channel 5 for flue gas circulation, which can further exchange heat with the second heat exchange medium in the heat exchange space 12. This not only enables the secondary utilization of flue gas, but also enhances the heat exchange of the second heat exchange medium inside the heat exchange space 12, thereby improving heat exchange efficiency.

[0040] like Figure 1 As shown, the auxiliary heat exchange assembly 2 includes a connecting shell 21 and a connector 22 connected to each other; the connector 22 has a first opening 6, and there is a gap between the first opening 6 and the heat exchanger body 1 to form a heat exchange channel 7 communicating with the guide space 8. The first heat exchange medium enters the guide space 8 through the heat exchange channel 7, or the first heat exchange medium flows out from the guide space 8 through the heat exchange channel 7.

[0041] Specifically, when the first heat exchange medium is a liquid, due to the greater gravity of the liquid and the use of a vertical heat exchanger, the first opening 6 is designed as the opening for the first heat exchange medium to flow into the guide space 8. The first heat exchange medium flows into the heat exchange channel 7 through the first opening 6, and then enters the guide space 8 through the heat exchange channel 7. When the first heat exchange medium is a gas, the first heat exchange medium can enter the guide space 8 from the first opening 6 and then enter the heat exchange space 12 for heat exchange. Alternatively, the first heat exchange medium can flow into the heat exchange space 12 from the second opening 13 described below, and after heat exchange in the heat exchange space 12, it flows out from the heat exchange channel 7 through the guide space 8 via the connecting hole 16 described below.

[0042] The auxiliary heat exchange component 2 can be cylindrical, rectangular, or other shapes, and is not limited to this embodiment. For ease of description, in this embodiment, both the connecting shell 21 and the connecting member 22 are designed as cylindrical structures.

[0043] The connector 22 and the connecting shell 21 form a hollow structure, which is sleeved on the outside of the heat exchanger body 1. The connector 22 is located at the end of the connecting shell 21 facing away from the heat exchange space 12. A guide space 8 is formed inside the connecting shell 21. The connector 22 is a pipe with a certain length. The end of the connector 22 facing away from the heat exchange space 12 has an outward flange, and multiple threaded holes for connecting external equipment are provided on the flange. A first opening 6 communicating with the connecting shell 21 is provided along the axial direction of the connector 22 facing away from the heat exchange space 12. There is a certain gap between the edge of the first opening 6 and the heat exchanger body 1. This gap communicates with the heat exchange channel 7 of the guide space 8. The first heat exchange medium can enter the guide space 8 inside the connecting shell 21 through the first opening 6 and the heat exchange channel 7, and then enter the heat exchange space 12 through the following connecting hole 16 for heat exchange; it can also enter the heat exchange space 12 through the second opening 7 for heat exchange, and then enter the guide space 8 and the heat exchange channel 7 through the following connecting hole 16 before being discharged.

[0044] As a preferred implementation method, such as Figure 1 and Figure 2As shown, the heat exchanger body 1 includes a shell 11 and a heat exchange component 3 connected inside the shell 11. A heat exchange space 12 is formed between the heat exchange component 3 and the shell 11. A first flow guide space 9, communicating with the heat exchange component 3, is reserved between one side of the heat exchange component 3 and the shell 11. A second flow guide space 10, communicating with the heat exchange component 3, is reserved between the other side of the heat exchange component 3 and the shell 11. The heat exchange component 3 divides the interior of the shell 11 into three spaces. The heat exchange component 3 itself forms a heat exchange space 12 between itself and the shell 11 for heat exchange between the first and second heat exchange media. The two sides of the heat exchange component 3 respectively form a first flow guide space 9 and a second flow guide space 10 between itself and the shell 11 for the entry and exit of the second heat exchange media. The first flow guide space 9 and the second flow guide space 10 are closed spaces, located on both sides of the heat exchange component 3 and communicating with it.

[0045] It is worth noting that the positions of the first guide space 9 and the second guide space 10 are not limited to this embodiment, and can be any of the following embodiments:

[0046] Implementation method one: such as Figure 2 As shown, the space formed between the top of the heat exchange component 3 and the top of the shell 11 is designated as the first flow guiding space 9, and the space formed between the bottom of the heat exchange component 3 and the bottom of the shell 11 is designated as the second flow guiding space 10.

[0047] The first guiding space 9 serves as the inflow channel for the second heat exchange medium to enter the heat exchanger body 1, and the second guiding space 10 serves as the outflow channel for the second heat exchange medium to exit the heat exchanger body 1. The second heat exchange medium can flow into the heat exchange component 3 from the first guiding space 9, and the flow direction of the second heat exchange medium is from top to bottom. When the second heat exchange medium flows through the heat exchange component 3, it exchanges heat with the first heat exchange medium in the heat exchange space 12. After the heat exchange is completed, the second heat exchange medium flows out from the heat exchange component 3 into the second guiding space 10, and is then discharged to the outside through the second connecting pipe 18 described below, which is connected in the second guiding space 10.

[0048] Therefore, the purpose of setting up the first guide space 9 and the second guide space 10 is to collect and guide the second heat exchange medium into the heat exchange space 12 for heat exchange, and then discharge it after collection. The first heat exchange medium does not enter the first guide space 9 and the second guide space 10, but enters the heat exchange space 12 directly from the guide space 8 for heat exchange. Therefore, the first guide space 9 and the second guide space 10 can achieve isolation between the first heat exchange medium and the second heat exchange medium, so that the first heat exchange medium and the second heat exchange medium can exchange heat in layers, thereby increasing the heat exchange efficiency.

[0049] In the second embodiment, the space formed between the top of the heat exchange component 3 and the top of the shell 11 can be used as the second flow guiding space, and the space formed between the bottom of the heat exchange component 3 and the bottom of the shell 11 can be used as the first flow guiding space.

[0050] The second heat exchange medium enters the heat exchange space 12 through the first guide space and exchanges heat with the first heat exchange medium, which enters the heat exchange space 12 through the guide space 8. After the heat exchange is completed, the second heat exchange medium flows out through the second guide space after converging. The flow direction of the second heat exchange medium is from bottom to top. The first guide space serves as the inflow channel for the second heat exchange medium into the heat exchanger body 1, and the second guide space serves as the outflow channel for the second heat exchange medium out of the heat exchanger body 1. The second heat exchange medium enters the heat exchange component 3 through the first guide space and then flows out of the heat exchange component 3 into the second guide space. The first heat exchange medium does not enter the first or second guide spaces but enters the heat exchange space 12 directly from the guide space 8 for heat exchange. The first and second heat exchange media achieve convective heat exchange through different paths.

[0051] By setting up a first flow guide space and a second flow guide space, the first heat exchange medium and the second heat exchange medium can be isolated, allowing the first heat exchange medium and the second heat exchange medium to exchange heat in layers, thereby increasing the heat exchange efficiency.

[0052] The arrangement of the auxiliary heat exchange component 2 relative to the heat exchanger body 1 is not limited by the specific implementation method, and any of the following implementation methods can be adopted:

[0053] As a preferred implementation method, such as Figure 2As shown, the auxiliary heat exchange assembly 2 is connected to the top of the heat exchanger body; the connecting shell 21 and the connector 22 are both sleeved on the outside of the housing 11; wherein, the bottom of the connecting shell 21 is connected to the outer wall of the housing 11, and the top of the connecting shell 21 is connected to the connector 22, which extends along the height direction of the mandrel 4, exceeding the height of the housing 11. The top surface of the connector 22 is provided with a first opening 6, which communicates with the connecting shell 21, and the first opening 6 is at a predetermined distance from the housing 11 to form a heat exchange channel 7. The first heat exchange medium enters the guide space 8 inside the connecting shell 21 through the heat exchange channel 7. The top of the shell 11 is provided with a plurality of connecting holes 16 corresponding to the connecting shell 21. The connecting holes 16 are evenly distributed along the circumferential surface of the outer wall of the shell 11 and are also evenly distributed along the axial direction of the shell 11. Providing a plurality of connecting holes 16 is beneficial to fully guide the first heat exchange medium in the guide space 8 into the heat exchange space 12 inside the shell 11, preventing it from being left in the guide space 8, and can accelerate the speed at which the first heat exchange medium enters the heat exchange space 12 from the guide space 8, thereby further enhancing the heat exchange efficiency.

[0054] In another preferred embodiment, the auxiliary heat exchange assembly 2 is connected to the outer circumferential surface of the housing 11. Both the connector 22 and the connecting shell 21 are sleeved on the outer side of the housing 11. The bottom of the connecting shell 21 is connected to the outer wall surface of the housing 11, and the connector 22 is connected above the connecting shell 21. The connector 22 extends along the axial direction of the housing 11, and its height does not exceed the height of the housing 11. The purpose of this arrangement is to reduce the height of the heat exchanger when a small heat exchanger with height requirements is needed, while still meeting heat exchange efficiency requirements. By connecting the auxiliary heat exchange assembly 2 to the outer circumferential surface of the housing 11 without exceeding the height of the housing 11, the height of the heat exchanger can be further reduced, saving space. When the auxiliary heat exchange component 2 is connected to the outer circumferential surface of the housing 11, the position of the corresponding connecting hole is also lowered. Multiple connecting holes are provided on the housing 11 at the position corresponding to the connector 22. The connecting holes connect the guide space 8 inside the connecting housing 21 with the heat exchange space 12 inside the housing 11, so that the first heat exchange medium enters the heat exchange space 12 from the guide space 8, preventing it from being left in the guide space 8, and accelerating the speed at which the first heat exchange medium enters the heat exchange space 12 from the guide space 8, thereby further enhancing the heat exchange efficiency.

[0055] like Figure 2 As shown, the flow channel 5 is along the axial direction of the spindle 4; the flow channel 5 has an inlet end 14 for flue gas to enter and an outlet end 15 for flue gas to exit.

[0056] The mandrel 4 is a hollow tubular structure. The hollow structure in the middle of the mandrel 4 serves as the flow channel 5 for flue gas. To fully utilize the high-heat exhaust gas discharged from the engine or other equipment, it flows into the outlet end 15 of the mandrel 4 through the inlet end 14. Since the mandrel 4 is located inside the heat exchanger body 1, a heat exchange space 12 is formed between the mandrel 4 and the inner wall of the heat exchanger body 1. In this embodiment, the mandrel 4 is located at the center of the heat exchanger body 1, and a heat exchange space 12 is formed between the outer circumference of the mandrel 4 and the inner wall of the heat exchanger body 1. The heat exchange space 12 facilitates heat exchange between the first heat exchange medium and the second heat exchange medium. In addition, the flue gas flows through the flow channel 5 and further exchanges heat with the second heat exchange medium in the heat exchange space 12, thereby further enhancing the heat exchange efficiency of the second heat exchange medium. This fully utilizes the preheating of the exhaust gas, realizes the secondary utilization and recovery of the exhaust gas, and enhances the heat exchange effect, achieving higher heat exchange efficiency.

[0057] As a preferred embodiment of this application, such as Figure 2 As shown, the width of the inlet end 14 of the mandrel 4 is greater than the width of the outlet end 15 of the mandrel 4, so as to increase the support area of ​​the inlet end 14 of the mandrel 4.

[0058] The inlet end 14 of the mandrel 4 is located below the outlet end 15. The inlet end 14 serves as the support end of the entire heat exchanger, so the size of the inlet end 14 needs to be increased to increase the support strength of the mandrel 4.

[0059] In a preferred embodiment of this method, the mandrel 4 is designed as a cylindrical structure, and the diameter of the mandrel 4 from the inlet end 14 to the outlet end 15 is gradually reduced, thereby increasing the bottom support of the mandrel 4 and enhancing the overall support stability of the heat exchanger.

[0060] In another embodiment, the mandrel 4 is configured as a stepped shaft structure, with the shaft diameter of the first shaft (where the inlet end 14 is located) being larger than the shaft diameter of the second shaft (where the outlet end 15 is located). Increasing the shaft diameter of the first shaft increases the support area at the bottom of the heat exchanger, thereby improving the stability of the heat exchanger.

[0061] The mandrel 4 can also be configured as a rectangular or trapezoidal structure, and its structural shape is not limited by the specific limitations of this embodiment.

[0062] The housing 11 has a connecting hole 16 that communicates with the connecting housing 21, so that the first heat exchange medium can enter the heat exchange space 12 through the connecting hole 16 or flow out of the heat exchange space 12 through the connecting hole 16.

[0063] When the first heat exchange medium flows into the guide space 8 from the first opening 6, the first heat exchange medium enters the heat exchange space 12 through the connecting hole 16 and exchanges heat with the second heat exchange medium.

[0064] When the first heat exchange medium flows into the heat exchange space 12 through the second opening 13, after the heat exchange space 12 completes the heat exchange with the second heat exchange medium, it enters the guide space 8 through the connecting hole 16 and then flows out from the first opening 6.

[0065] In a preferred embodiment, the axis of the connecting hole 16 is inclined downward toward the housing 11 so that when the first heat exchange medium is a liquid medium, it is naturally introduced into the heat exchange space 12 along the connecting hole 16.

[0066] As a preferred embodiment, based on the principle of bionics, the connecting hole 16 is designed as a gill-shaped opening. The gill-shaped opening can increase the inner surface of the connecting hole 16. The inner surface of the connecting hole 16 serves as a guiding surface for the fluid, which can achieve a larger flow rate in the same radial direction, increase the flow speed, and further improve the heat exchange efficiency. Moreover, the gill-shaped opening has an inclined extension direction, which can also make it easier for the first heat exchange medium to pass smoothly through the connecting hole 16 into the heat exchange space 12 under its own weight when it is a liquid, preventing blockage at the connecting hole 16 and preventing the first heat exchange medium from remaining inside the guiding space 8, which is more conducive to improving the heat exchange efficiency.

[0067] like Figure 1 and Figure 2 As shown, the housing 11 has a second opening 13 corresponding to the first opening 6. The second opening 13 is connected to the heat exchange space 12. The first heat exchange medium flows into the heat exchange space 12 through the first opening 6 and flows out of the heat exchange space 12 through the second opening 13; or, the first heat exchange medium flows into the heat exchange space 12 through the second opening 13 and flows out of the heat exchange space 12 through the first opening 6.

[0068] In a preferred embodiment of this implementation, the first heat exchange medium enters the guide space 8 through the first opening 6, and the guide space 8 guides and diverts the fluid. The medium then enters the heat exchange space 12 of the shell 11 through the connecting hole 16. Correspondingly, in this embodiment, the first guide space 9 is located below the shell 11, and the second heat exchange medium flows from the first guide space 9 below the shell 11 into the heat exchange assembly 3. This achieves the second heat exchange medium flowing from the bottom up into the heat exchange assembly 3. Since the heat exchange assembly 3 is located in the heat exchange space 12, the first and second heat exchange media exchange heat within the heat exchange space 12. After the heat exchange is complete, the second heat exchange medium flows out of the heat exchange assembly 3 into the second guide space 10, and then flows out to the outside through the second connecting pipe 18 (described below) connected to the second guide space 10. The first heat exchange medium flows out from the second opening 13, which communicates with the heat exchange space 12, thus achieving diversion from the second heat exchange medium. With this configuration, the first heat exchange medium flows out from the second opening 13 below the shell 11, and the second heat exchange medium flows out from the second guide space 10 above the shell 11, ensuring that the first heat exchange medium and the second heat exchange medium achieve convective heat exchange in the heat exchange space 12 and then flow out through different paths.

[0069] In another preferred embodiment of this implementation, the first heat exchange medium enters the guide space 8 through the second opening 13, guides and diverts the fluid through the guide space 8, and enters the heat exchange space 12 of the shell 11 through the connecting hole 16; in this embodiment, correspondingly, the first guide space 9 is located above the shell 11, and the second guide space 10 is located below the shell 11; the second heat exchange medium enters the first guide space 9 from the first connecting pipe 17 described below, and then flows into the heat exchange assembly 3, realizing that the second heat exchange medium flows from the upper part of the shell 11 into the heat exchange assembly 3 from top to bottom; since the heat exchange assembly 3 is located in the heat exchange space 12, the first heat exchange medium and the second heat exchange medium achieve heat exchange in the heat exchange space 12; when After heat exchange is completed, the second heat exchange medium flows out from the heat exchange component 3 into the second flow guiding space 10, and then flows out to the outside through the second connecting pipe 18 connected to the second flow guiding space 10. The heat exchange space 12 and the second flow guiding space 10 are isolated by the heat exchange component 3. The first opening 6 connects to the heat exchange space 12, and the second connecting pipe 18 connects to the second flow guiding space 10. Therefore, the first opening 6 and the second connecting pipe 18 are isolated by the heat exchange component 3. The first heat exchange medium flows out from the first opening 6 located below the shell 11, and the second heat exchange medium flows out from the second connecting pipe 18 located below the shell 11. This achieves convective heat exchange between the first heat exchange medium and the second heat exchange medium in the heat exchange space 12, and then they flow out through different paths.

[0070] In a preferred embodiment of this application, the housing 11 is further connected to a first connecting pipe 17 for the entry of the second heat exchange medium and a second connecting pipe 18 for the exit of the second heat exchange medium; the first connecting pipe 17 is connected to the first flow guiding space 9; and the second connecting pipe 18 is connected to the second flow guiding space 10.

[0071] At least one first opening is provided on the housing 11 corresponding to the position of the first flow guiding space 9. Multiple first openings are evenly arranged along the circumference of the housing 11. A first connecting pipe 17 is connected to each first opening. At least one second opening is provided on the housing 11 corresponding to the position of the second flow guiding space 10. Multiple second openings are evenly arranged along the circumference of the housing 11. A second connecting pipe 18 is connected to each second opening. The first connecting pipe 17 and the second connecting pipe 18 can be inclined on the housing 11, axially distributed with the housing 11, or perpendicular to the axial direction of the housing 11. Specific implementations are not limited to the technical solution of this application.

[0072] The heat exchange assembly 3 includes a baffle plate 31 and a plurality of heat exchange tubes 32. The baffle plate 31 extends spirally along the axial direction of the plurality of heat exchange tubes 32 and is connected to the plurality of heat exchange tubes 32. The heat exchange tubes 32 are hollow tubes with a first end and a second end communicating with the outside, respectively. The first end is connected to the first flow guiding space 9, and the second end is connected to the second flow guiding space 10. The heat exchange tubes 32 are used to circulate the second heat exchange medium.

[0073] When the first flow guiding space 9 is located above the shell 11 and the second flow guiding space 10 is located below the shell 11, the second heat exchange medium flows from the first connecting pipe 17 into the first flow guiding space 9. The second heat exchange medium in the first flow guiding space 9 enters the heat exchange tube 32 through the first end, realizing that the second heat exchange medium flows into the heat exchange tube 32 from top to bottom relative to the shell 11. At this time, the first heat exchange medium enters the heat exchange space 12 through the second opening 13 below the shell 11, and under the guiding action of the baffle 31... The fluid moves along the spiral direction of the baffle 31 to exchange heat with the second heat exchange medium in the heat exchange tube 32 in the heat exchange space 12. The first heat exchange medium and the second heat exchange medium form convective heat exchange. After the heat exchange is completed, the first heat exchange medium enters the guide space 8 through the connecting hole 16, passes through the guide space 8 and the heat exchange channel 7, and finally flows out from the first opening 6. The second heat exchange medium flows out from the second end of the heat exchange tube 32 to the second guide space 10 and flows out from the second connecting pipe 18 of the second guide space 10.

[0074] When the first flow guiding space 9 is located below the shell 11 and the second flow guiding space 10 is located above the shell 11, the second heat exchange medium flows into the first flow guiding space 9 from the first connecting pipe 17. The second heat exchange medium in the first flow guiding space 9 enters the heat exchange tube 32 through the second end, realizing that the second heat exchange medium flows into the heat exchange tube 32 from bottom to top relative to the shell 11. At this time, the first heat exchange medium enters the heat exchange space 12 through the first opening 6 above the shell 11 and the guide space 8. Under the guidance of the baffle 31, the fluid moves along the spiral direction of the baffle 31, and performs heat exchange with the second heat exchange medium in the heat exchange tube 32 in the heat exchange space 12. The first heat exchange medium and the second heat exchange medium form convective heat exchange. When the heat exchange is completed, the first heat exchange medium flows out from the second opening 13. The second heat exchange medium flows out from the first end of the heat exchange tube 32 to the second flow guiding space 10 and flows out from the second connecting pipe 18 of the second flow guiding space 10. For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0075] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0076] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A vertical heat exchanger, characterized in that, The device includes a heat exchanger body, an auxiliary heat exchange assembly connected to the outside of the heat exchanger body, and a mandrel connected to the inside of the heat exchanger body; a guide space is formed between the auxiliary heat exchange assembly and the heat exchanger body; the mandrel has a flow channel for flue gas flow; the heat exchanger body includes a shell and a heat exchange assembly connected inside the shell; a heat exchange space is formed between the interior of the heat exchange assembly and the shell; a first flow guide space communicating with the heat exchange assembly is reserved between one outer side of the heat exchange assembly and the shell; a second flow guide space communicating with the heat exchange assembly is reserved between the other outer side of the heat exchange assembly and the shell; the auxiliary heat exchange assembly... It includes a connecting shell and a connector connected together; an auxiliary heat exchange component is connected to the top of the heat exchanger body, and the connecting shell and the connector are both sleeved on the outside of the shell; the bottom of the connecting shell is connected to the outer wall of the shell, and the top of the connecting shell is connected to the connector, which extends along the height direction of the mandrel and exceeds the height of the shell. The top surface of the connector is provided with a first opening, which communicates with the connecting shell. The first opening is a preset distance from the shell to form a heat exchange channel. The first heat exchange medium enters the guide space inside the connecting shell through the heat exchange channel. The top of the shell is provided with multiple connecting holes corresponding to the connecting shell, for the first heat exchange medium to enter and exit the heat exchange space through the connecting holes.

2. A vertical heat exchanger according to claim 1, characterized in that, The flow channel is along the axial direction of the mandrel; the flow channel has an inlet end for flue gas to enter and an outlet end for flue gas to exit.

3. A vertical heat exchanger according to claim 1, characterized in that, The radial width of the inlet end of the mandrel is greater than the radial width of the outlet end of the mandrel, so as to increase the support area of ​​the inlet end of the mandrel.

4. A vertical heat exchanger according to claim 1, characterized in that, The housing has a second opening corresponding to the first opening, the second opening being in communication with the heat exchange space, the first heat exchange medium flowing into the heat exchange space through the first opening and out of the heat exchange space through the second opening; or, the first heat exchange medium flowing into the heat exchange space through the second opening and out of the heat exchange space through the first opening.

5. A vertical heat exchanger according to claim 1, characterized in that, The housing is also connected to a first connecting pipe for the entry of the second heat exchange medium and a second connecting pipe for the exit of the second heat exchange medium; the first connecting pipe is connected to the first flow guiding space; the second connecting pipe is connected to the second flow guiding space.

6. A vertical heat exchanger according to claim 1, characterized in that, The heat exchange assembly includes a baffle plate and a plurality of heat exchange tubes; the baffle plate extends spirally along the axial direction of the plurality of heat exchange tubes and is connected to the plurality of heat exchange tubes.

7. A vertical heat exchanger according to claim 1, characterized in that, The connecting hole is inclined toward the heat exchange space so that the first heat exchange medium is introduced into the heat exchange space along the connecting hole.

Images