Bottom sealing head structure of heat exchanger
By setting staggered perforated plates in the bottom end cap structure of the heat exchanger, the problem of uneven fluid flow is solved, the heat exchange efficiency is improved and the heat transfer effect is enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA BAOFENG ENERGY GROUP CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-01
AI Technical Summary
The existing bottom end cap structure of the heat exchanger causes uneven fluid flow inside the cylinder, resulting in uneven local flow velocity, which affects heat exchange efficiency and increases dead area, leading to poor heat transfer effect.
An upper distribution plate, a first lower distribution plate, and a second lower distribution plate are installed inside the cylinder, and staggered through holes of different diameters are opened in the middle of these plates to guide the fluid to flow uniformly and in a turbulent state, thereby reducing the dead area.
It achieves uniform fluid flow in the heat exchange zone, improves heat exchange efficiency and enhances heat transfer effect, and reduces dead area.
Smart Images

Figure CN224189051U_ABST
Abstract
Description
A heat exchanger bottom end cap structure Technical Field
[0001] This utility model relates to the field of heat exchangers, specifically a bottom end cap structure for a heat exchanger. Background Technology
[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also a key component for improving energy efficiency. However, existing heat exchangers with bottom end caps often suffer from uneven flow velocity due to difficulties in uniformly distributing the fluid throughout the heat exchange area, thus affecting heat exchange efficiency. Furthermore, the large dead surface area of the fluid results in poor heat transfer.
[0003] To address the aforementioned issues, a bottom end cap structure for a heat exchanger is proposed here. Summary of the Invention
[0004] The purpose of this invention is to provide a bottom end cap structure for a heat exchanger to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a bottom end cap structure for a heat exchanger, comprising a cylindrical body, an upper distribution plate fixedly disposed at the top of the inner side of the cylindrical body, a first lower distribution plate and a second lower distribution plate fixedly disposed sequentially from top to bottom in the middle of the inner side of the cylindrical body, a steel plate fixedly disposed at the bottom of the inner side of the cylindrical body, a reinforcing member fixedly disposed at the connection between the cylindrical body and the steel plate, a steel pipe fixedly connected to the middle of the steel plate, a fourth flange fixedly disposed at the bottom end of the cylindrical body, a flange cover plate disposed at the bottom end of the fourth flange, and a fixed connection between the upper distribution plate and the cylindrical body. The device is provided with six first fixing members, each of which has a first fixing hole in its center. The upper distribution plate has several first through holes in its center. Six second fixing members are fixedly installed at the connection between the first lower distribution plate and the cylinder, each of which has a second fixing hole in its center. The first lower distribution plate has several second through holes in its center. Six third fixing members are fixedly installed at the connection between the second lower distribution plate and the cylinder, each of which has a third fixing hole in its center. The second lower distribution plate has several third through holes in its center.
[0006] The bottom end cap structure of this heat exchanger consists of an upper distribution plate, a first lower distribution plate, and a second lower distribution plate fixedly arranged sequentially from top to bottom inside the cylinder. Each of the upper, first, and second lower distribution plates has several first through holes with a diameter of 16mm, several second through holes with a diameter of 13mm, and several third through holes with a diameter of 14mm, respectively, arranged in a staggered pattern. This arrangement allows the fluid inside the cylinder to flow evenly through the heat exchange area, preventing uneven flow velocity that could affect heat exchange efficiency. Furthermore, it guides the fluid into a turbulent state, thereby reducing dead area and enhancing heat transfer.
[0007] Preferably, a first conduit is fixedly connected to the bottom of one side of the cylinder, and a first flange is fixedly provided at the end of the first conduit away from the cylinder, so that the material can be easily discharged through the first conduit.
[0008] Preferably, a second conduit is fixedly connected to the top of one side of the cylinder, and a second flange is fixedly provided at the end of the second conduit away from the cylinder. The second conduit facilitates the introduction of materials into the cylinder.
[0009] Preferably, a third conduit is fixedly connected to the top of the cylinder on the side away from the second conduit, and a third flange is fixedly provided at the end of the third conduit away from the cylinder. The third conduit facilitates the introduction of materials into the cylinder.
[0010] Preferably, the thickness of the upper distribution plate, the thickness of the first lower distribution plate, and the thickness of the second lower distribution plate are all 20 mm.
[0011] Preferably, the diameters of the upper distribution plate, the first lower distribution plate, and the second lower distribution plate are all 986 mm.
[0012] Preferably, the diameter of the first through hole is 16 mm, the diameter of the second through hole is 13 mm, and the diameter of the third through hole is 14 mm.
[0013] Preferably, the upper distribution plate and the six first fixing members are an integral structure, the first lower distribution plate and the six second fixing members are an integral structure, and the second lower distribution plate and the six third fixing members are an integral structure, which can ensure the structural strength of the upper distribution plate, the first lower distribution plate and the second lower distribution plate.
[0014] Preferably, the diameters of the first fixing hole, the second fixing hole, and the third fixing hole are all 20 mm.
[0015] Preferably, the connection between the flange cover and the fourth flange is provided with a number of fixing bolts. The setting of a number of fixing bolts makes it easy to firmly fix the flange cover to the bottom of the cylinder, thereby playing a sealing role.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The bottom end cap structure of the heat exchanger is provided with an upper distribution plate, a first lower distribution plate and a second lower distribution plate fixedly arranged from top to bottom inside the cylinder. The upper distribution plate, the first lower distribution plate and the second lower distribution plate are respectively provided with a number of first through holes with a diameter of 16mm, a number of second through holes with a diameter of 13mm and a number of third through holes with a diameter of 14mm in the middle part. The number of first through holes, the number of second through holes and the number of third through holes are staggered, so that the fluid in the cylinder can flow evenly through the heat exchange area, avoid uneven local flow velocity and thus affect the heat exchange efficiency, and guide the fluid to a turbulent state, thereby reducing the dead area and enhancing the heat transfer effect. Attached Figure Description
[0017] Figure 1 is a perspective view of this utility model;
[0018] Figure 2 is a front sectional view of this utility model;
[0019] Figure 3 is a structural diagram of the upper distribution plate of this utility model;
[0020] Figure 4 is a structural diagram of the first lower distribution plate of this utility model;
[0021] Figure 5 is a structural diagram of the second lower distribution plate of this utility model.
[0022] In the diagram: 1. Cylinder body; 2. Upper distribution plate; 3. First lower distribution plate; 4. Second lower distribution plate; 5. Steel plate; 6. Steel pipe; 7. Reinforcing component; 8. First guide pipe; 9. First flange; 10. Fourth flange; 11. Flange cover plate; 12. Fixing bolt; 13. Second guide pipe; 14. Second flange; 15. Third guide pipe; 16. Third flange; 17. First fastener; 18. First fixing hole; 19. First through hole; 20. Second fastener; 21. Second fixing hole; 22. Second through hole; 23. Third fastener; 24. Third fixing hole; 25. Third through hole. Detailed Implementation
[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0024] Please refer to Figures 1-5. This utility model provides a bottom end cap structure for a heat exchanger, including a cylindrical body 1. An upper distribution plate 2 is fixedly installed at the top of the inner side of the cylindrical body 1. A first lower distribution plate 3 and a second lower distribution plate 4 are fixedly installed sequentially from top to bottom in the middle of the inner side of the cylindrical body 1. A steel plate 5 is fixedly installed at the bottom of the inner side of the cylindrical body 1. A reinforcing member 7 is fixedly installed at the connection between the cylindrical body 1 and the steel plate 5. A steel pipe 6 is fixedly connected to the middle of the steel plate 5. A fourth flange 10 is fixedly installed at the bottom end of the cylindrical body 1. A flange cover plate 11 is provided at the bottom of the flange 10. Six first fixing members 17 are fixedly provided at the connection between the upper distribution plate 2 and the cylinder 1. Each of the six first fixing members 17 has a first fixing hole 18 in the middle. Several first through holes 19 are provided in the middle of the upper distribution plate 2. Six second fixing members 20 are fixedly provided at the connection between the first lower distribution plate 3 and the cylinder 1. Each of the six second fixing members 20 has a second fixing hole 21 in the middle. Several first through holes 19 are provided in the middle of the first lower distribution plate 3. The heat exchanger bottom end cap structure has an upper distribution plate 2, a first lower distribution plate 3, and a second lower distribution plate 4 fixedly installed at the connection between the upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4. The upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4 are fixedly installed from top to bottom inside the cylinder 1. The upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4 have several first through holes 19 with a diameter of 16 mm, several second through holes 22 with a diameter of 13 mm, and several third through holes 25 with a diameter of 14 mm, respectively, in the middle of the upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4. The several first through holes 19, several second through holes 22, and several third through holes 25 are staggered, allowing the fluid inside the cylinder 1 to flow evenly through the heat exchange area, avoiding uneven local flow velocity that could affect heat exchange efficiency. Furthermore, it guides the fluid into a turbulent state, thereby reducing dead area and enhancing heat transfer effect.
[0025] A first conduit 8 is fixedly connected to the bottom of one side of the cylinder 1. A first flange 9 is fixedly installed at the end of the first conduit 8 away from the cylinder 1. A second conduit 13 is fixedly connected to the top of one side of the cylinder 1. A second flange 14 is fixedly installed at the end of the second conduit 13 away from the cylinder 1. A third conduit 15 is fixedly connected to the top of the side of the cylinder 1 away from the second conduit 13. A third flange 16 is fixedly installed at the end of the third conduit 15 away from the cylinder 1.
[0026] In use, the first conduit 8 facilitates the discharge of materials, the second conduit 13 facilitates the introduction of materials into the cylinder 1, and the third conduit 15 facilitates the introduction of materials into the cylinder 1.
[0027] The thickness of the upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4 are all 20mm. The diameter of the upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4 are all 986mm. The diameter of the first through hole 19 is 16mm, the diameter of the second through hole 22 is 13mm, and the diameter of the third through hole 25 is 14mm. The upper distribution plate 2 and the six first fixing parts 17 are an integral structure. The first lower distribution plate 3 and the six second fixing parts 20 are an integral structure. The second lower distribution plate 4 and the six third fixing parts 23 are an integral structure. The diameter of the first fixing hole 18, the diameter of the second fixing hole 21, and the diameter of the third fixing hole 24 are all 20mm. Several fixing bolts 12 are threaded at the connection between the flange cover plate 11 and the fourth flange 10.
[0028] In use, the flange cover plate 11 is firmly fixed to the bottom of the cylinder 1 by the setting of several fixing bolts 12, thereby playing a sealing role.
[0029] In use, the bottom end cap structure of this heat exchanger consists of an upper distribution plate 2, a first lower distribution plate 3, and a second lower distribution plate 4, which are fixedly arranged from top to bottom inside the cylinder 1. The upper distribution plate 2, the first lower distribution plate 3, and the second lower distribution plate 4 each have several first through holes 19 with a diameter of 16 mm, several second through holes 22 with a diameter of 13 mm, and several third through holes 25 with a diameter of 14 mm, respectively. These first through holes 19, second through holes 22, and third through holes 25 are staggered, allowing the fluid inside the cylinder 1 to flow uniformly through the heat exchange area, avoiding uneven local flow velocity that could affect heat exchange efficiency. Furthermore, the fluid is guided into a turbulent state, thereby reducing dead area and enhancing heat transfer.
[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A heat exchanger bottom head structure comprising a cylinder (1), characterized in that: An upper distribution plate (2) is fixedly installed on the top of the inner side of the cylinder (1). A first lower distribution plate (3) and a second lower distribution plate (4) are fixedly installed in the middle of the inner side of the cylinder (1) from top to bottom. A steel plate (5) is fixedly installed at the bottom of the inner side of the cylinder (1). A reinforcing member (7) is fixedly installed at the connection between the cylinder (1) and the steel plate (5). A steel pipe (6) is fixedly connected to the middle of the steel plate (5). A fourth flange (10) is fixedly installed at the bottom of the cylinder (1). A flange cover plate (11) is installed at the bottom of the fourth flange (10). Six first fasteners (17) are fixedly installed at the connection between the upper distribution plate (2) and the cylinder (1). 7) Each of the upper distribution plate (2) has a first fixing hole (18) in the middle, and the upper distribution plate (2) has several first through holes (19) in the middle. The connection between the first lower distribution plate (3) and the cylinder (1) is fixed with six second fixing members (20). The middle of each of the six second fixing members (20) has a second fixing hole (21). The middle of the first lower distribution plate (3) has several second through holes (22). The connection between the second lower distribution plate (4) and the cylinder (1) is fixed with six third fixing members (23). The middle of each of the six third fixing members (23) has a third fixing hole (24). The middle of the second lower distribution plate (4) has several third through holes (25).
2. The heat exchanger bottom head structure of claim 1, wherein: The bottom of one side of the cylinder (1) is fixedly connected to a first conduit (8), and a first flange (9) is fixedly installed at the end of the first conduit (8) away from the cylinder (1).
3. The heat exchanger bottom end cap structure according to claim 1, characterized in that: A second conduit (13) is fixedly connected to the top of one side of the cylinder (1), and a second flange (14) is fixedly installed at the end of the second conduit (13) away from the cylinder (1).
4. The heat exchanger bottom head structure of claim 3, wherein: The top of the cylinder (1) away from the second conduit (13) is fixedly connected to a third conduit (15), and a third flange (16) is fixedly provided at the end of the third conduit (1) away from the cylinder (1).
5. The heat exchanger bottom head structure of claim 1, wherein: The thickness of the upper distribution plate (2), the thickness of the first lower distribution plate (3), and the thickness of the second lower distribution plate (4) are all 20 mm.
6. The heat exchanger bottom head structure of claim 1, wherein: The diameters of the upper distribution plate (2), the first lower distribution plate (3), and the second lower distribution plate (4) are all 986 mm.
7. The heat exchanger bottom end cap structure according to claim 1, characterized in that: The diameter of the first through hole (19) is 16 mm, the diameter of the second through hole (22) is 13 mm, and the diameter of the third through hole (25) is 14 mm.
8. The heat exchanger bottom head structure of claim 1, wherein: The upper distribution plate (2) and the six first fixing members (17) are an integral structure, the first lower distribution plate (3) and the six second fixing members (20) are an integral structure, and the second lower distribution plate (4) and the six third fixing members (23) are an integral structure.
9. The heat exchanger bottom head structure of claim 1, wherein: The diameters of the first fixing hole (18), the second fixing hole (21), and the third fixing hole (24) are all 20 mm.
10. The heat exchanger bottom head structure of claim 1, wherein: The flange cover plate (11) and the fourth flange (10) are connected by a number of fixing bolts (12).