Channel heat exchanger
By designing a channel heat exchanger and utilizing cooling medium microchannels and heat exchange medium microchannels to cool hydrogen, the problem of increased hydrogen temperature is solved, efficient cooling and prevention of hydrogen embrittlement are achieved, and the structure is compact.
Patent Information
- Application Number
- CN202422435164.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-09
AI Technical Summary
During the hydrogenation process, the temperature of hydrogen increases due to the decrease in pressure, which the existing technology has not been able to effectively solve.
A channel heat exchanger is designed, which includes a core, an upper side plate, a lower side plate and stacked heat exchange units. Cooling is performed through cooling medium microchannels and heat exchange medium microchannels to avoid the increase of hydrogen temperature, and a weld-free design is used at the joints to prevent hydrogen embrittlement.
It achieves effective cooling, avoids excessively high hydrogen temperature, and avoids hydrogen embrittlement problems, and has efficient heat exchange performance and compact structure.
Smart Images
Figure CN223332213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to a channel heat exchanger. Background Art
[0002] During the hydrogenation process using a hydrogenator, as the hydrogen pressure is released, the pressure in the high-pressure tank gradually decreases, which will cause the temperature of the hydrogen in the pipeline to gradually increase. Therefore, a corresponding channel heat exchanger needs to be set to cool the hydrogen in the pipeline. Utility Model Content
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the temperature of hydrogen increases due to the decrease in pressure, thereby providing a channel heat exchanger.
[0004] In order to solve the above technical problems, the utility model provides a channel heat exchanger, comprising: a core body, the core body having an upper side plate, a lower side plate and at least one set of heat exchange units stacked between the upper side plate and the lower side plate;
[0005] The heat exchange unit comprises: two hot side plates, a partition plate and a cold side plate, a heat exchange medium microchannel is formed between the two hot side plates, and a cooling medium microchannel is formed between the partition plate and the cold side plate;
[0006] The upper side plate is provided with a hot side inlet and a hot side outlet communicating with the heat exchange medium microchannel, and the upper side plate is also provided with a cold side inlet and a cold side outlet communicating with the cooling medium microchannel.
[0007] Optionally, one side of the hot side plate is a flat plate and the other side has a microchannel structure, and the microchannel structures of the two hot side plates are buckled to form the heat exchange medium microchannel.
[0008] Optionally, both ends of the hot side plate are respectively provided with a hot side distribution cavity communicated with the heat exchange medium microchannel, and the hot side distribution cavity is a through hole.
[0009] Optionally, one side of the cold side plate is a flat plate and the other side has a microchannel structure. The side of the cold side plate with the microchannel structure cooperates with the partition to form the cooling medium microchannel, and the other side of the partition is bonded to the hot side plate.
[0010] Optionally, both ends of the cold side plate are respectively provided with a cold side distribution cavity communicated with the cooling medium microchannel, and the cold side distribution cavity is a through hole.
[0011] Optionally, the cross-sectional areas of the hot side inlet and the hot side outlet are larger than the cross-sectional areas of the cold side inlet and the cold side outlet.
[0012] The technical solution of this utility model has the following advantages:
[0013] 1. The channel heat exchanger provided by the utility model exchanges heat between the cooling medium and hydrogen through the cooling medium microchannels and the heat exchange medium microchannels in the core, thereby cooling the hydrogen through the cooling medium to avoid excessive increase in the hydrogen temperature in the pipeline during the hydrogenation process.
[0014] 2. The channel heat exchanger provided by the utility model sets the hot side inlet and the hot side outlet directly on the upper side plate. After the core is connected to the hydrogen, there is no weld at the connection point, which can avoid the problem of hydrogen embrittlement caused by hydrogen entering the core.
[0015] 3. The channel heat exchanger provided by the utility model has a simple structure, high compactness and higher heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 A perspective view of a specific implementation of a channel heat exchanger provided in an embodiment of the present utility model;
[0018] Figure 2 for Figure 1 Exploded diagram;
[0019] Figure 3 for Figure 2 A bottom view of the first hot side plate;
[0020] Figure 4 for Figure 2 A top view of the second hot side plate;
[0021] Figure 5 for Figure 2 Top view of the middle partition;
[0022] Figure 6 for Figure 2 Top view of the intercooler side panel.
[0023] Description of reference numerals:
[0024] 1. Core; 2. Upper side plate; 3. Lower side plate; 4. Hot side inlet; 5. Hot side outlet; 6. Cold side inlet; 7. Cold side outlet; 8. Heat exchange unit; 9. First hot side plate; 10. Second hot side plate; 11. Heat exchange medium microchannel; 12. Hot side distribution chamber; 13. Cold side plate; 14. Cooling medium microchannel; 15. Cold side distribution chamber; 16. Partition. DETAILED DESCRIPTION
[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0029] The channel heat exchanger provided in this embodiment is used for heat exchange between two media, and specifically, can be used to cool the hydrogen in the hydrogenation channel.
[0030] like Figure 1 、 Figure 2As shown, a specific implementation of the channel heat exchanger provided in this embodiment includes: a core 1, the core 1 has an upper side plate 2, a lower side plate 3 and at least one group of heat exchange units 8 stacked between the upper side plate 2 and the lower side plate 3; the heat exchange unit 8 includes: two hot side plates, a partition 16 and a cold side plate 13, a heat exchange medium microchannel 11 is formed between the two hot side plates, and a cooling medium microchannel 14 is formed between the partition 16 and the cold side plate 13; the upper side plate 2 has a hot side inlet 4 and a hot side outlet 5 connected to the heat exchange medium microchannel 11, and the upper side plate 2 also has a cold side inlet 6 and a cold side outlet 7 connected to the cooling medium microchannel 14. During heat exchange, the cooling medium enters the cooling medium microchannel 14 of the core 1 through the cold side inlet 6 and is then discharged through the cold side outlet 7; the hydrogen enters the heat exchange medium microchannel 11 of the core 1 through the hot side inlet 4 and is then discharged through the hot side outlet 5, thereby cooling the hydrogen in the core 1 by the cooling medium.
[0031] It should be noted that, in this embodiment, the lower side plate 3 is a flat plate structure. In addition, in some alternative embodiments, the hot side inlet 4 and the hot side outlet 5 can also be set on the lower side plate 3, or the cold side inlet 6 and the cold side outlet 7 can be set on the lower side plate 3, and the settings can be adjusted according to actual conditions.
[0032] The channel heat exchanger provided in this embodiment exchanges heat between the cooling medium and hydrogen through the cooling medium microchannels 14 and heat exchange medium microchannels 11 within the core 1. This cools the hydrogen gas, preventing excessive temperature increases within the pipeline during hydrogenation. Furthermore, because the hot-side inlet 4 and hot-side outlet 5 are located directly on the upper plate 2, there is no weld at the joint between the core 1 and the hydrogen gas, thus preventing hydrogen embrittlement during hydrogenation.
[0033] like Figure 2 As shown, in the channel heat exchanger provided in this embodiment, the heat exchange units 8 in the core 1 can be arranged in groups in sequence to increase the heat exchange area; of course, in some alternative embodiments, the heat exchange units 8 can also be arranged in only one group.
[0034] like Figure 2-Figure 4 As shown, in the channel heat exchanger provided in this embodiment, the two hot side plates include a first hot side plate 9 and a second hot side plate 10. One side of the first hot side plate 9 and the second hot side plate 10 is a flat plate and the other side has a microchannel structure. The first hot side plate 9 and the second hot side plate 10 are interlocked and stacked, and the microchannel structures of the two hot side plates are interlocked to form the heat exchange medium microchannel 11.
[0035] like Figure 3 、 Figure 4As shown, in the channel heat exchanger provided in this embodiment, hot-side distribution cavities 12 are respectively provided at both ends of the hot-side plate. The hot-side distribution cavities 12 are through-holes and communicate with the heat exchange medium microchannels 11. After installation, the heat exchange medium (hydrogen) enters the core 1 through the hot-side inlet 4. The hydrogen enters the heat exchange medium microchannels 11 from the hot-side distribution cavity 12 at one end and then flows out of the heat exchange medium microchannels 11 from the hot-side distribution cavity 12 at the other end.
[0036] like Figure 2 、 Figure 5 and Figure 6 As shown, in the channel heat exchanger provided in this embodiment, one side of the cold side plate 13 is a flat plate, and the other side has a microchannel structure. The side of the cold side plate 13 with the microchannel structure is bonded to the partition plate 16 to form the heat exchange medium microchannel 11. The other side of the partition plate 16 is bonded to the hot side plate. By placing the partition plate 16 between the cold side plate 13 and the hot side plate, the strength of the hot side plate and the cold side plate 13 can be improved, thereby improving the overall strength of the heat exchange unit 8.
[0037] like Figure 5 、 Figure 6 As shown, cold-side distribution cavities 15 are provided at both ends of the cold-side plate 13. These cold-side distribution cavities 15 are through-holes that communicate with the cooling medium microchannels 14. After installation, the cooling medium enters the core 1 through the cold-side inlet 6. Inside the core 1, the cooling medium enters the cooling medium microchannels 14 from the cold-side distribution cavity 15 at one end and flows out of the cooling medium microchannels 14 from the cold-side distribution cavity 15 at the other end.
[0038] like Figures 1-6 As shown, in the channel heat exchanger provided in this embodiment, the cross-sectional areas of the hot side inlet 4 and the hot side outlet 5 are larger than the cross-sectional areas of the cold side inlet 6 and the cold side outlet 7. This arrangement allows more cooling medium to flow into the core 1, thereby ensuring a cooling effect on the heat exchange medium (hydrogen).
[0039] It should be noted that when multiple layers of the heat exchange units 8 are stacked, the multiple layers of the heat exchange units 8 are connected in parallel. With this arrangement, the first hot side plate 9, the second hot side plate 10, the cold side plate 13, and the partition plate 16 are also provided with through holes for the passage of the heat exchange medium (hydrogen) and through holes for the passage of the cooling medium. This arrangement achieves a compact structure of the core 1 and higher heat exchange efficiency.
[0040] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.
Claims
1. A channel heat exchanger, characterized in that: include: A core (1), the core (1) comprising an upper side plate (2), a lower side plate (3), and at least one set of heat exchange units (8) stacked between the upper side plate (2) and the lower side plate (3); The heat exchange unit (8) comprises: two hot side plates, a partition plate (16) and a cold side plate (13); a heat exchange medium microchannel (11) is formed between the two hot side plates; and a cooling medium microchannel (14) is formed between the partition plate (16) and the cold side plate (13); The upper side plate (2) has a hot side inlet (4) and a hot side outlet (5) connected to the heat exchange medium microchannel (11), and the upper side plate (2) also has a cold side inlet (6) and a cold side outlet (7) connected to the cooling medium microchannel (14).
2. The channel heat exchanger according to claim 1, characterized in that One side of the hot side plate is a flat plate, and the other side has a microchannel structure. The microchannel structures of the two hot side plates are buckled to form the heat exchange medium microchannel (11).
3. The channel heat exchanger according to claim 2, characterized in that Both ends of the hot side plate are respectively provided with a hot side distribution cavity (12) communicating with the heat exchange medium microchannel (11), and the hot side distribution cavity (12) is a through hole.
4. The channel heat exchanger according to claim 1, characterized in that One side of the cold side plate (13) is a flat plate, and the other side has a microchannel structure. The side of the cold side plate (13) with the microchannel structure cooperates with the partition (16) to form the cooling medium microchannel (14), and the other side of the partition (16) is bonded to the hot side plate.
5. The channel heat exchanger according to claim 4, characterized in that Both ends of the cold side plate (13) are respectively provided with a cold side distribution cavity (15) communicating with the cooling medium microchannel (14), and the cold side distribution cavity (15) is a through hole.
6. The channel heat exchanger according to any one of claims 1 to 5, characterized in that: The cross-sectional areas of the hot side inlet (4) and the hot side outlet (5) are larger than the cross-sectional areas of the cold side inlet (6) and the cold side outlet (7).