Hydrogen heat exchanger and hydrogen heat exchange apparatus

Abstract

The utility model provides a kind of hydrogen heat exchanger and hydrogen heat exchange equipment, the hydrogen heat exchanger includes: shell, the shell is enclosed and forms heat exchange cavity, and the shell is equipped with hydrogen input interface, hydrogen output interface, refrigerant input interface and refrigerant output interface;Hydrogen pipeline, the hydrogen pipeline is set in the heat exchange cavity, including the hydrogen input manifold of connecting the hydrogen input interface and the hydrogen output manifold of connecting the hydrogen output interface, and the hydrogen input manifold and the hydrogen output manifold are communicated by multiple hydrogen capillary flow channels;Refrigerant diffusion medium, the refrigerant diffusion medium is set in the heat exchange cavity, including at least the foamed metal sintering support of being arranged in the hydrogen capillary flow channel outer periphery.The utility model solves the problem that the hydrogen heat exchange efficiency is affected due to the relatively thick hydrogen flow pipeline in the related hydrogen heat exchanger, and the hydrogen flow pipeline is too thin, which leads to the problem of easy pipeline rupture.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a hydrogen heat exchanger and hydrogen heat exchange equipment. Background Technology

[0002] Heat exchangers are key equipment in energy and power systems that play a crucial role in energy conversion. Hydrogen is a clean energy source with high energy density and no pollution. my country regards hydrogen energy as one of the strategic development directions of future new energy sources and has introduced many policies to encourage the construction of infrastructure such as hydrogen refueling stations, thus creating a strong demand for heat exchangers used in hydrogen refueling stations.

[0003] In conventional hydrogen heat exchangers, the hydrogen flow channels are relatively thick, which affects the heat exchange efficiency and effect between hydrogen and the refrigerant in the heat exchanger. However, setting the hydrogen flow channels to be thinner capillary channels can greatly improve the heat exchange efficiency of hydrogen, but it is also very easy for the capillary channels to break due to uneven stress during use. Utility Model Content

[0004] One of the technical problems to be solved by this utility model is that the hydrogen heat exchange efficiency is affected by the fact that the hydrogen flow pipe in the relevant hydrogen heat exchanger is too thick, while the hydrogen flow pipe is too thin, which makes the pipe prone to rupture.

[0005] To solve the above-mentioned technical problems, one embodiment of this utility model provides a hydrogen heat exchanger.

[0006] The hydrogen heat exchanger includes: a shell enclosing a heat exchange cavity, the shell having a hydrogen inlet port, a hydrogen outlet port, a refrigerant inlet port, and a refrigerant outlet port; a hydrogen pipeline disposed in the heat exchange cavity, including a hydrogen inlet manifold connecting the hydrogen inlet port and a hydrogen outlet manifold connecting the hydrogen outlet port, the hydrogen inlet manifold and the hydrogen outlet manifold being connected by multiple hydrogen capillary channels; and a refrigerant diffusion medium disposed in the heat exchange cavity, including a sintered foam metal support member disposed at least on the outer periphery of the hydrogen capillary channels.

[0007] The hydrogen heat exchanger provided by this utility model features a hydrogen pipeline connected to a hydrogen inlet and a hydrogen outlet on the shell within a heat exchange cavity enclosed by a shell. The hydrogen pipeline includes a hydrogen inlet manifold, a hydrogen outlet manifold, and multiple hydrogen capillary channels connecting the two. The addition of these capillary channels increases the heat exchange area between the hydrogen and the refrigerant as the hydrogen flows through them, thereby effectively improving the heat exchange efficiency of the hydrogen. Simultaneously, the refrigerant diffusion medium includes bubbles at least disposed around the outer periphery of the hydrogen capillary channels. The foamed metal sintered support component provides a wrapping support and protection for the hydrogen capillary channel structure, preventing deformation and cracking of the hydrogen capillary channel due to uneven stress during use. Simultaneously, based on the structural characteristics of its porous material, the foamed metal sintered support component ensures smooth passage of the refrigerant and facilitates heat exchange within the hydrogen capillary channel. This solves the problems of excessively thick hydrogen flow pipes affecting hydrogen heat exchange efficiency in related hydrogen heat exchangers, and excessively thin hydrogen flow pipes leading to easy pipe rupture.

[0008] Preferably, the sintered foam metal support is fitted to the inner wall of the heat exchange chamber, and the hydrogen pipeline is built into the sintered foam metal support.

[0009] Preferably, the hydrogen inlet manifold and the hydrogen outlet manifold are arranged vertically in the heat exchange chamber, and multiple hydrogen capillary channels are arranged parallel to each other at equal intervals between the hydrogen inlet manifold and the hydrogen outlet manifold.

[0010] Preferably, the hydrogen capillary channels are arranged in a spiral shape in the plane in which they are located in the sintered foam metal support.

[0011] Preferably, the hydrogen capillary channel is arranged around the hydrogen output manifold; and / or, the hydrogen capillary channel rotates at least 4 times.

[0012] Preferably, the diameters of the refrigerant input port and the refrigerant output port are both larger than the diameters of the hydrogen input port and the hydrogen output port.

[0013] Preferably, the hydrogen input port and the refrigerant output port are respectively disposed on the top surface of the housing, and the hydrogen output port and the refrigerant input port are respectively disposed on the bottom surface of the housing.

[0014] Preferably, the hydrogen inlet manifold is coaxially arranged with the refrigerant inlet, and the refrigerant outlet is coaxially arranged with the hydrogen outlet manifold.

[0015] Preferably, a refrigerant diffusion medium is provided between the hydrogen inlet manifold and the refrigerant inlet, and a refrigerant diffusion medium is provided between the refrigerant outlet and the hydrogen outlet manifold.

[0016] A second aspect of this utility model provides a hydrogen heat exchange device, including a chiller and a hydrogen heat exchanger according to any one of the above, wherein the refrigerant input interface and the refrigerant output interface of the hydrogen heat exchanger are connected to the chiller. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side elevation structural diagram of the hydrogen heat exchanger disclosed in this embodiment of the utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the hydrogen heat exchanger disclosed in this embodiment of the utility model;

[0020] Figure 3 yes Figure 2 Schematic diagram of the internal longitudinal section

[0021] Figure 4 yes Figure 2 A schematic diagram of the internal transverse cross-section.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Shell; 2. Heat exchange chamber; 3. Hydrogen inlet; 4. Hydrogen outlet; 5. Refrigerant inlet; 6. Refrigerant outlet; 7. Hydrogen inlet manifold; 8. Hydrogen outlet manifold; 9. Hydrogen capillary channel; 10. Foam metal sintered support. Detailed Implementation

[0024] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this utility model by way of example, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0025] These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0026] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Furthermore, the term "vertical" as used in this invention is not strictly vertical, but rather within the allowable error range. Similarly, "parallel" is not strictly parallel, but also within the allowable error range. Terms such as "including" or "comprising" indicate that the element preceding the term encompasses the element listed following it, and do not exclude the possibility of encompassing other elements as well.

[0028] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0029] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0031] like Figures 1 to 4As shown, this utility model provides a hydrogen heat exchanger, which includes a shell 1, a hydrogen pipeline, and a refrigerant diffusion medium. The shell 1 is enclosed to form a heat exchange cavity 2. The shell 1 is provided with a hydrogen input port 3 and a hydrogen output port 4, a refrigerant input port 5 and a refrigerant output port 6. The hydrogen pipeline is disposed in the heat exchange cavity 2 and includes a hydrogen input manifold 7 connected to the hydrogen input port 3 and a hydrogen output manifold 8 connected to the hydrogen output port 4. The hydrogen input manifold 7 and the hydrogen output manifold 8 are connected by multiple hydrogen capillary channels 9. The refrigerant diffusion medium is disposed in the heat exchange cavity 2 and includes a foamed metal sintered support 10 disposed at least on the outer periphery of the hydrogen capillary channels 9.

[0032] The hydrogen heat exchanger provided by this utility model has a hydrogen pipeline connected to a hydrogen inlet port 3 and a hydrogen outlet port 4 on the shell 1 within a heat exchange cavity 2 enclosed by a shell 1. The hydrogen pipeline includes a hydrogen inlet manifold 7, a hydrogen outlet manifold 8, and multiple hydrogen capillary channels 9 connecting the two. The hydrogen capillary channels 9 increase the heat exchange area between the hydrogen and the refrigerant as the hydrogen flows through them, thereby effectively improving the heat exchange efficiency of the hydrogen. Simultaneously, the refrigerant diffusion medium includes at least one component disposed outside the hydrogen capillary channels 9. The foam metal sintered support 10 can provide a wrapping support and protection for the structure of the hydrogen capillary channel 9, preventing deformation and cracking of the hydrogen capillary channel due to uneven stress during use. At the same time, based on the structural characteristics of its porous material, the foam metal sintered support ensures that the refrigerant can pass smoothly and exchange heat with the medium in the hydrogen capillary channel. This solves the problem that the hydrogen heat exchange efficiency is affected by the hydrogen flow pipe being too thick in the relevant hydrogen heat exchanger, while the pipe is prone to cracking if it is too thin.

[0033] It should be noted that the refrigerant diffusion medium includes a sintered foam metal support 10 at least disposed around the outer periphery of the hydrogen capillary channel, and may also include other structures for connecting the sintered foam metal support 10. This invention does not include a refrigerant pipeline; the purpose is to use the heat exchange chamber 2 within the shell as a pathway for heat exchange between the refrigerant and the hydrogen in the hydrogen pipeline. The refrigerant diffusion medium can be a directional structure or a structure with thermal conductivity and dissipation properties; the specific structure or material can be selected and adjusted according to actual needs.

[0034] In an optional embodiment of this invention, the refrigerant diffusion medium may consist only of a sintered foam metal support 10. In this case, the sintered foam metal support 10 is fitted against the inner wall of the heat exchange chamber 2, meaning the sintered foam metal support 10 fills the heat exchange chamber 2. The hydrogen pipeline is embedded within the sintered foam metal support 10, which ensures the fixed position of the hydrogen pipeline within the heat exchange chamber 2 and prevents damage to the hydrogen pipeline due to uneven stress. Furthermore, since the sintered foam metal support 10 itself is a porous material, this design also provides additional benefits. The refrigerant can flow and exchange heat rapidly in the foam metal sintered support 10. The overall filling of the heat exchange chamber 2 with the foam metal sintered support 10 can not only ensure the structural and stress stability of the hydrogen pipeline in the heat exchange chamber 2, but also improve the heat exchange efficiency of hydrogen in the hydrogen pipeline. For example, the hydrogen inlet manifold and hydrogen outlet manifold, except for the hydrogen capillary channel, can also achieve rapid heat exchange by increasing the contact area with the foam metal sintered support 10, thereby further improving the heat exchange efficiency of the hydrogen heat exchanger.

[0035] In an optional embodiment of this utility model, the hydrogen inlet manifold 7 and the hydrogen outlet manifold 8 are arranged vertically in the heat exchange chamber 2, and multiple hydrogen capillary channels 9 are arranged parallel to each other at equal intervals in the heat exchange chamber, so that the heat exchange efficiency per unit volume in the space where the multiple hydrogen capillary channels 9 are located is equal, which helps the hydrogen to conduct heat uniformly.

[0036] In an optional embodiment of this invention, the hydrogen capillary channel 9 is arranged in a spiral shape within the sintered foam metal support 10. This spiral structure of the hydrogen capillary channel 9 increases the heat exchange area per unit volume, thereby improving heat exchange efficiency. Simultaneously, it strengthens the overall resistance of the hydrogen capillary channel 9 to external forces, resulting in greater structural stability under the support of the sintered foam metal support 10.

[0037] In an optional embodiment of this invention, the hydrogen capillary channel 9 is arranged around the hydrogen output manifold 8, which can effectively utilize the space in the heat exchange chamber 2 to distribute the hydrogen capillary channel 9, ensuring that the hydrogen flow has sufficient length to exchange heat when passing through the hydrogen capillary channel 9, thereby ensuring sufficient heat exchange of the hydrogen. In a further optional embodiment of this invention, the hydrogen capillary channel 9 has at least 4 rotations to fully utilize the volume of the heat exchange chamber 2 for the distribution of the hydrogen capillary channel 9.

[0038] In an optional embodiment of this utility model, the diameters of the refrigerant input interface 5 and the refrigerant output interface 6 are both larger than the diameters of the hydrogen input interface 3 and the hydrogen output interface 4, so as to increase the heat exchange capacity of the refrigerant with the hydrogen per unit volume in the same time by increasing the input and output of the refrigerant.

[0039] In an optional embodiment of this invention, the hydrogen inlet 3 and the refrigerant outlet 6 are respectively located on the top surface of the housing 1, and the hydrogen outlet 4 and the refrigerant inlet 5 are respectively located on the bottom surface of the housing 1. This allows hydrogen to flow from the top to the bottom of the hydrogen heat exchanger via the hydrogen pipeline, while the refrigerant flows from the bottom to the top in the same direction. That is, the flow directions of hydrogen and refrigerant in the hydrogen heat exchanger are opposite, which facilitates sufficient heat exchange of the hydrogen and avoids insufficient or uneven heat exchange due to flow velocity issues that occur during unidirectional heat exchange.

[0040] In an optional embodiment of this utility model, the hydrogen inlet manifold 7 and the refrigerant inlet 5 are coaxially arranged, and the refrigerant outlet 6 and the hydrogen outlet manifold 8 are coaxially arranged. This allows the hydrogen entering the heat exchange chamber 2 to have initial contact cooling with the refrigerant that immediately enters the heat exchange chamber 2, and then to fully exchange heat through the hydrogen capillary channel 9, thereby improving the heat exchange efficiency. At the same time, the coaxial arrangement of the hydrogen inlet manifold 7 and the refrigerant inlet 5, and the coaxial arrangement of the refrigerant outlet 6 and the hydrogen outlet manifold 8 can reduce the distribution of the functional structure of the hydrogen heat exchanger, thereby reducing the footprint of the hydrogen heat exchanger without affecting the heat exchange effect.

[0041] In a further optional embodiment of this utility model, a refrigerant diffusion medium is provided between the hydrogen inlet manifold 7 and the refrigerant inlet 5, and a refrigerant diffusion medium is provided between the refrigerant outlet 6 and the hydrogen outlet manifold 8, to ensure that the refrigerant flows smoothly when entering and exiting, and that the refrigerant entry or exit is not difficult due to the internal structural distribution of the heat exchange chamber 2. At the same time, the refrigerant can reduce its flow rate in the refrigerant diffusion medium between the above structures to exchange heat with the hydrogen in the hydrogen inlet manifold 7 and the hydrogen outlet manifold 8.

[0042] A second aspect of this utility model provides a hydrogen heat exchange device, including a chiller and a hydrogen heat exchanger according to any of the above descriptions, wherein the refrigerant input port and refrigerant output port of the hydrogen heat exchanger are connected to the chiller. In other embodiments of this utility model, the hydrogen heat exchange device may include a chiller and a hydrogen heat exchanger according to any of the above descriptions, with the chiller connected to the refrigerant input port and refrigerant output port of the hydrogen heat exchanger. That is, the refrigerant can be either liquid or gaseous, as long as it can flow in the heat exchange chamber and exchange heat with hydrogen, it belongs to the same solution of this utility model.

[0043] The hydrogen heat exchange device provided by this utility model includes a hydrogen pipeline connected to a hydrogen inlet port 3 and a hydrogen outlet port 4 on the housing 1 within a heat exchange cavity 2 enclosed by the housing 1 of the hydrogen heat exchanger. The hydrogen pipeline includes a hydrogen inlet manifold 7, a hydrogen outlet manifold 8, and multiple hydrogen capillary channels 9 connecting the two. The arrangement of the hydrogen capillary channels 9 increases the heat exchange area between the hydrogen and the refrigerant as the hydrogen flows through them, thereby effectively improving the heat exchange efficiency of the hydrogen. Simultaneously, the refrigerant diffusion medium includes at least one component disposed within the hydrogen capillary channels. The foam metal sintered support 10 around the outer periphery of the thin flow channel 9 can provide a wrapping support and protection for the structure of the hydrogen capillary channel 9, preventing deformation and cracking of the hydrogen capillary channel due to uneven stress during use. At the same time, based on the structural characteristics of its porous material, the foam metal sintered support ensures that the refrigerant can pass smoothly and exchange heat with the medium in the hydrogen capillary channel. This solves the problem that the hydrogen heat exchange efficiency is affected by the hydrogen flow channel being too thick, while the hydrogen flow channel is too thin and prone to cracking.

[0044] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0045] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A hydrogen heat exchanger, characterized in that, include: The shell encloses a heat exchange cavity, and the shell is provided with a hydrogen input port, a hydrogen output port, a refrigerant input port, and a refrigerant output port; A hydrogen pipeline is disposed in the heat exchange chamber, including a hydrogen input manifold connecting to the hydrogen input interface and a hydrogen output manifold connecting to the hydrogen output interface. The hydrogen input manifold and the hydrogen output manifold are connected by multiple hydrogen capillary channels. A refrigerant diffusion medium is disposed in the heat exchange cavity, including a foamed metal sintered support component disposed at least around the outer periphery of the hydrogen capillary channel.

2. The hydrogen heat exchanger according to claim 1, characterized in that, The sintered foam metal support is fitted to the inner wall of the heat exchange chamber, and the hydrogen pipeline is built into the sintered foam metal support.

3. The hydrogen heat exchanger according to claim 1, characterized in that, The hydrogen inlet manifold and the hydrogen outlet manifold are arranged vertically in the heat exchange chamber, and multiple hydrogen capillary channels are arranged parallel to each other at equal intervals between the hydrogen inlet manifold and the hydrogen outlet manifold.

4. The hydrogen heat exchanger according to claim 3, characterized in that, The hydrogen capillary channels are arranged in a spiral shape in the plane in which they are located in the sintered foam metal support.

5. The hydrogen heat exchanger according to claim 4, characterized in that, The hydrogen capillary channel is arranged around the hydrogen output manifold; and / or, the hydrogen capillary channel rotates at least 4 times.

6. The hydrogen heat exchanger according to claim 1, characterized in that, The diameters of the refrigerant input port and the refrigerant output port are both larger than the diameters of the hydrogen input port and the hydrogen output port.

7. The hydrogen heat exchanger according to claim 1, characterized in that, The hydrogen input port and the refrigerant output port are respectively located on the top surface of the housing, and the hydrogen output port and the refrigerant input port are respectively located on the bottom surface of the housing.

8. The hydrogen heat exchanger according to claim 7, characterized in that, The hydrogen input manifold is coaxially arranged with the refrigerant input interface, and the refrigerant output interface is coaxially arranged with the hydrogen output manifold.

9. The hydrogen heat exchanger according to claim 8, characterized in that, A refrigerant diffusion medium is provided between the hydrogen input manifold and the refrigerant input interface, and a refrigerant diffusion medium is provided between the refrigerant output interface and the hydrogen output manifold.

10. A hydrogen heat exchange device, characterized in that, It includes a chiller and a hydrogen heat exchanger according to any one of claims 1 to 9, wherein the refrigerant input interface and the refrigerant output interface of the hydrogen heat exchanger are connected to the chiller.

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