Unit assembly type hydrogen heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a unit assembly type hydrogen heat exchanger which comprises a main gas inlet pipe, a main gas outlet pipe, a main medium inlet pipe, a main medium outlet pipe and a plurality of heat exchange units arranged in a stacked mode. The heat exchange unit comprises a box body and a heat exchange pipe, the heat exchange pipe is located in the box body, the inlet end and the outlet end of the heat exchange pipe are both connected to the box body, and the box body is filled with a heat exchange medium; the inlet ends of the heat exchange pipes are communicated with the main air inlet pipe, and the outlet ends of the heat exchange pipes are communicated with the main air outlet pipe; a medium inlet is formed in one side of the box body, and a medium outlet is formed in the other side; the medium inlet is communicated with the total medium inlet pipe, and the medium outlet is communicated with the total medium outlet pipe; the box bodies of every two adjacent heat exchange units are detachably spliced. The unit assembly type hydrogen heat exchanger has the advantages of being flexible in heat exchange capacity adjustment and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a unit-assembled hydrogen heat exchanger. Background Art

[0002] Hydrogen heat exchangers are used to liquefy hydrogen or cool high-pressure hydrogen during the hydrogenation process. As high-pressure vessels, they require regular inspection and screening for potential safety hazards. Existing hydrogen heat exchangers are mostly monolithic, such as microchannel heat exchangers and tubular heat exchangers. If a fault or defect occurs in a specific location, the entire heat exchanger must be shut down for repair, disrupting the normal operation of other equipment, reducing production efficiency, or impacting hydrogenation and hydrogenation speeds. Utility Model Content

[0003] The purpose of the utility model is to provide a unit-assembled hydrogen heat exchanger with flexible heat exchange capacity adjustment and easy maintenance.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A unit-assembled hydrogen heat exchanger comprises a main air inlet pipe, a main air outlet pipe, a main medium inlet pipe, a main medium outlet pipe and a plurality of stacked heat exchange units;

[0006] The heat exchange unit includes a box body and a heat exchange tube. The heat exchange tube is located in the box body. The inlet and outlet ends of the heat exchange tube are both connected to the box body. The box body is filled with heat exchange medium.

[0007] The inlet end of the heat exchange tube is connected to the main air inlet pipe, and the outlet end of the heat exchange tube is connected to the main air outlet pipe;

[0008] A medium inlet is provided on one side of the box body, and a medium outlet is provided on the other side; the medium inlet is connected to the total medium inlet pipe, and the medium outlet is connected to the total medium outlet pipe;

[0009] The boxes of two adjacent heat exchange units can be detachably assembled.

[0010] Furthermore, positioning structures are respectively provided on two opposite sides of the box body, and two adjacent boxes are spliced together through the positioning structures.

[0011] Furthermore, the positioning structure on one side of the box body is a concave position with an opening at the bottom, and the positioning structure on the other side of the box body is a convex block, and the convex block matches the concave position.

[0012] Furthermore, the unit-assembled hydrogen heat exchanger also includes a positioning rod, and connecting components are respectively provided on both sides of the box body. One side of several heat exchange units is connected to one positioning rod through the connecting component, and the other side is connected to another positioning rod through the connecting component.

[0013] Furthermore, the connecting assembly includes a fixed block and a movable block, the end of the fixed block is connected to the box body, and one end of the movable block is rotatably connected to a side of the fixed block close to the box body;

[0014] The fixed block and the movable block are assembled to form a locking space for the positioning rod to pass through, and the fixed block and the movable block are connected at one end away from the box body by screws.

[0015] Furthermore, the inlet end of the heat exchange tube, the outlet end of the heat exchange tube, the medium inlet and the medium outlet are all located at the top of the box.

[0016] Furthermore, the heat exchange tube is a serpentine tube, and a plurality of flow guide baffles are provided in the box body, and the flow guide baffles are provided between two adjacent parallel sections of the heat exchange tubes.

[0017] Furthermore, an arc-shaped buffer block is provided on the top or bottom of the guide baffle.

[0018] Furthermore, a buffer chamfer is provided at the bottom of the box.

[0019] Furthermore, the main air inlet pipe, the main air outlet pipe, the main medium inlet pipe and the main medium outlet pipe are respectively provided with a plurality of connecting pipes;

[0020] The connecting pipe is used to connect the heat exchange unit.

[0021] The technical solution provided by the utility model may have the following beneficial effects:

[0022] 1. In this technical solution, the main body of the hydrogen heat exchanger is formed by a plurality of stacked heat exchange units. Based on the detachable assembly of the boxes of two adjacent heat exchange units, a single heat exchange unit is easy to disassemble and install, which can ensure the continuous operation of the hydrogen heat exchanger.

[0023] 2. The hydrogen heat exchanger is quick to maintain and has low maintenance costs, and the heat exchange capacity of the hydrogen heat exchanger can be flexibly adjusted.

[0024] 3. The relative positions of several heat exchange units are locked through positioning rods and connecting components to ensure the overall structural stability of the hydrogen heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 is a cross-sectional view of the heat exchange unit;

[0027] Figure 3 is a schematic diagram of one side of the heat exchange unit;

[0028] Figure 4 is a schematic diagram of the other side of the heat exchange unit;

[0029] Among them, the main air inlet pipe 1, the main air outlet pipe 2, the main medium inlet pipe 3, the main medium outlet pipe 4, and the connecting pipe 01;

[0030] Heat exchange unit 5, box body 6, medium inlet 61, medium outlet 62, protrusion 63, recess 64, guide baffle 65, arc-shaped buffer block 66, buffer chamfer 67;

[0031] Heat exchange tube 7, positioning rod 8, connecting assembly 9, fixed block 91, movable block 92, screw 93. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" and "several" mean two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "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 the specific circumstances.

[0035] The following combination Figures 1 to 4 , describing a unit-assembled hydrogen heat exchanger according to an embodiment of the present utility model.

[0036] A unit-assembled hydrogen heat exchanger comprises a main air inlet pipe 1, a main air outlet pipe 2, a main medium inlet pipe 3, a main medium outlet pipe 4 and a plurality of stacked heat exchange units 5;

[0037] The heat exchange unit 5 includes a box body 6 and a heat exchange tube 7. The heat exchange tube 7 is located in the box body 6. The inlet and outlet ends of the heat exchange tube 7 are both connected to the box body 6. The box body 6 is filled with a heat exchange medium.

[0038] The inlet end of the heat exchange tube 7 is connected to the main air inlet pipe 1, and the outlet end of the heat exchange tube 7 is connected to the main air outlet pipe 2;

[0039] A medium inlet 61 is provided on one side of the box body 6, and a medium outlet 62 is provided on the other side; the medium inlet 61 is connected to the total medium inlet pipe 3, and the medium outlet 62 is connected to the total medium outlet pipe 4;

[0040] The boxes 6 of two adjacent heat exchange units 5 can be detachably assembled.

[0041] In this technical solution, the main body of the hydrogen heat exchanger is formed by a plurality of stacked heat exchange units 5. The removable housings 6 of two adjacent heat exchange units 5 facilitate removal and installation of individual heat exchange units 5. Therefore, if a heat exchange unit 5 malfunctions or is defective, the faulty unit 5 can be removed and replaced with a new one, ensuring continuous operation of the hydrogen heat exchanger while minimizing maintenance costs. Furthermore, the heat exchange capacity of the hydrogen heat exchanger can be flexibly adjusted by selecting the number of heat exchange units 5.

[0042] It can be understood that the box 6 is filled with heat exchange medium and the heat exchange tube 7 is located in the box 6, so the hydrogen in the heat exchange tube 7 can exchange heat with the heat exchange medium, so that the heat exchanger can cool the hydrogen.

[0043] In one embodiment of the present invention, positioning structures are provided on opposite sides of the box 6, and adjacent boxes 6 are joined together by the positioning structures. The positioning structures enable the joining and unjoining of the adjacent boxes 6, facilitating the assembly and disassembly of the heat exchange unit 5.

[0044] Preferably, the positioning structure on one side of the housing 6 is a recessed portion 64 with an open bottom, and the positioning structure on the other side is a protrusion 63, which matches the recessed portion 64. In two adjacent housings 6, the protrusion 63 of one housing 6 is located within the recessed portion 64 of the other housing 6, thus achieving positioning of the two housings in all directions except the bottom. If one of the stacked heat exchange units 5 needs to be disassembled, it can be simply removed from the bottom after disconnecting it from the main pipe, making the operation simple.

[0045] In one embodiment of the present invention, the unit-assembled hydrogen heat exchanger further includes a positioning rod 8, and a connecting assembly 9 is provided on both sides of the box body 6. One side of a plurality of heat exchange units 5 is connected to a positioning rod 8 through a connecting assembly, and the other side is connected to another positioning rod 8 through a connecting assembly. The positioning rod 8 is used to lock the position of all heat exchange units 5, thereby ensuring the reliability of the connection between the heat exchange unit 5 and the main pipe. When a heat exchange unit 5 needs to be disassembled, the connection between the heat exchange unit 5 and the main pipe is released, and then the connecting assembly 9 is opened to pull the heat exchange unit 5 downward. The two positioning rods 8 are used to achieve the desired effect.

[0046] Preferably, the connecting assembly 9 includes a fixed block 91 and a movable block 92, the end of the fixed block 91 is connected to the box body 6, and one end of the movable block 92 is rotatably connected to a side of the fixed block 91 close to the box body 6;

[0047] The fixed block 91 and the movable block 92 are assembled to form a locking space for the positioning rod 8 to pass through. The ends of the fixed block 91 and the movable block 92 facing away from the box body 6 are connected by screws 93.

[0048] In this technical solution, the heat exchange unit 5 is positioned on the positioning rod 8 after the fixed block 91 and the movable block 92 are fixedly connected by screws 93. The heat exchange unit 5 can be separated from the positioning rod 8 by removing the screws 93 and rotating the movable block 92. The connection assembly 9 has a simple structure and is easy to operate. Specifically, the fixed block 91 is welded to the housing 6, and the movable block 92 is rotatably connected to the fixed block 91 via a pin.

[0049] In one embodiment of the present invention, the inlet and outlet ends of the heat exchange tubes 7, the medium inlet 61, and the medium outlet 62 are all located at the top of the housing 6, facilitating assembly and disassembly of the heat exchange unit 5. The main pipes, including the main air inlet pipe 1, the main air outlet pipe 2, the main medium inlet pipe 3, and the main medium outlet pipe 4, are all located at the top of the heat exchange unit 5, facilitating inspection and installation.

[0050] In one embodiment of the present invention, the heat exchange tubes 7 are serpentine tubes, and a plurality of flow guide baffles 65 are provided within the housing 6. Each of the two adjacent parallel sections of heat exchange tubes 7 has a flow guide baffle 65. The serpentine heat exchange tubes 7 are relatively long, enabling sufficient heat exchange between the hydrogen and the heat exchange medium. The flow guide baffles 65 guide the heat exchange medium to flow in a circuitous manner within the housing 6, with the flow direction being consistent with that of the heat exchange tubes 7, thereby improving the utilization rate of the heat exchange medium. Preferably, the inlet end of the heat exchange tubes 7 is adjacent to the medium outlet 62, and the outlet end of the heat exchange tubes 7 is adjacent to the medium inlet 61.

[0051] Preferably, an arc-shaped buffer block 66 is provided at the top or bottom of the guide baffle 65. The arc-shaped buffer block 66 can reduce the impact of the heat exchange medium on the guide baffle 65, guide the heat exchange medium, reduce the flow resistance of the heat exchange medium, and improve the secure installation of the guide baffle 65 within the housing 6. Specifically, the guide baffle 65 and the arc-shaped buffer block 66 are an integrally formed structure, and both are welded to the inner wall of the housing 6.

[0052] Further preferably, a buffer chamfer 67 is provided at the bottom of the box body 6. The buffer chamfer 67 can reduce the impact of the heat exchange medium on the box body 6 and reduce the heat exchange cut-off flow resistance.

[0053] In one embodiment of the present invention, the main air inlet pipe 1, the main air outlet pipe 2, the main medium inlet pipe 3, and the main medium outlet pipe 4 are each provided with a plurality of connecting pipes 01; the connecting pipes 01 are used to connect to the heat exchange unit 5. Specifically, the connecting pipes 01 are welded to the main air inlet pipe 1, the main air outlet pipe 2, the main medium inlet pipe 3, and the main medium outlet pipe 4. The ends of the connecting pipes 01 are connected to the inlet and outlet ends of the heat exchange pipe 7, the medium inlet 61, and the medium outlet 62 via nuts and sealing rings.

[0054] Other structures and operations of a unit-assembled hydrogen heat exchanger according to an embodiment of the present invention are known to ordinary technicians in this field and will not be described in detail here.

[0055] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A unit-assembled hydrogen heat exchanger, characterized in that: It includes a main air inlet pipe, a main air outlet pipe, a main medium inlet pipe, a main medium outlet pipe and a plurality of stacked heat exchange units; The heat exchange unit includes a box body and a heat exchange tube. The heat exchange tube is located in the box body. The inlet and outlet ends of the heat exchange tube are both connected to the box body. The box body is filled with heat exchange medium. The inlet end of the heat exchange tube is connected to the main air inlet pipe, and the outlet end of the heat exchange tube is connected to the main air outlet pipe; A medium inlet is provided on one side of the box body, and a medium outlet is provided on the other side; the medium inlet is connected to the total medium inlet pipe, and the medium outlet is connected to the total medium outlet pipe; The boxes of two adjacent heat exchange units can be detachably assembled.

2. The unit assembled hydrogen heat exchanger according to claim 1, characterized in that: Positioning structures are respectively provided on two opposite sides of the box body, and two adjacent boxes are spliced together through the positioning structures.

3. The unit assembled hydrogen heat exchanger according to claim 2, characterized in that: The positioning structure on one side of the box body is a concave position with an opening at the bottom, and the positioning structure on the other side of the box body is a convex block, and the convex block matches the concave position.

4. The unit assembled hydrogen heat exchanger according to claim 2, characterized in that: It also includes a positioning rod, and connecting components are respectively provided on both sides of the box body. One side of several heat exchange units is connected to one positioning rod through the connecting component, and the other side is connected to another positioning rod through the connecting component.

5. The unit assembled hydrogen heat exchanger according to claim 4, characterized in that: The connecting assembly includes a fixed block and a movable block, wherein an end of the fixed block is connected to the box body, and one end of the movable block is rotatably connected to a side of the fixed block close to the box body; The fixed block and the movable block are assembled to form a locking space for the positioning rod to pass through, and the fixed block and the movable block are connected at one end away from the box body by screws.

6. The unit-assembled hydrogen heat exchanger according to any one of claims 1 to 5, characterized in that: The inlet end of the heat exchange tube, the outlet end of the heat exchange tube, the medium inlet and the medium outlet are all located at the top of the box body.

7. The unit assembled hydrogen heat exchanger according to claim 6, characterized in that: The heat exchange tube is a serpentine tube, and a plurality of flow guide baffles are arranged in the box body. The flow guide baffles are provided between two adjacent parallel sections of the heat exchange tubes.

8. The unit assembled hydrogen heat exchanger according to claim 7, characterized in that: An arc-shaped buffer block is provided on the top or bottom of the guide baffle.

9. The unit assembled hydrogen heat exchanger according to claim 8, characterized in that: The bottom of the box body is provided with a buffer chamfer.

10. The unit assembled hydrogen heat exchanger according to claim 6, characterized in that: The main air inlet pipe, the main air outlet pipe, the main medium inlet pipe and the main medium outlet pipe are respectively provided with a plurality of connecting pipes; The connecting pipe is used to connect the heat exchange unit.

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