A large-flow heat exchange plate with internal interlocking support resistance structure

Abstract

The utility model discloses a big flow heat exchange plate with internal interlocking support resistance flow structure, including first sheet piece and second sheet piece, the first sheet piece's compression face is equipped with the multiple first main support rib, second main support rib and convex sealing dam through the subtractive processing forming, the compression face of second sheet piece is equipped with the multiple third main support rib, fourth main support rib and recessed sealing groove through the subtractive processing forming, the width of first main support rib and second main support rib is the linear change's 2~8mm, the narrow end of first main support rib is integrally connected with the first side of first sheet piece, and the wide end of first main support rib is the outer convex semicircle arc, and first main support rib and second main support rib form the continuity flow channel of making the fluid produce the serpentine walk position. The utility model discloses through internal mechanical interlocking structure, realizes big flow simultaneously, effectively solved the medium mutual penetration problem between flow channel, and possesses high structural reliability, especially applicable to the heat exchange scene of harsh medium such as liquid metal.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange equipment, specifically relating to a high-flow heat exchange plate with an internal interlocking support flow-blocking structure. Background Technology

[0002] Plate heat exchangers are widely used in chemical, energy, and aerospace industries due to their high efficiency and compact design. For high-flow-rate applications, large-size flow channels are required to reduce flow resistance. Large-size flow channels refer to flow channels with a cross-sectional area larger than the contact area. However, manufacturing fully welded plate heat exchangers faces significant challenges in current technology. Traditional microchannel heat exchange plates typically employ integral diffusion welding technology, but for large-size flow channels, the limited contact area between the two plates means that the uniform high pressure applied during welding can easily lead to excessive local pressure, causing flow channel instability, crushing, or even collapse. Furthermore, when the heat transfer medium is liquid metal or other high-pressure, highly permeable media, traditional internal welded sealing lines may have microscopic defects, leading to mutual leakage of hot and cold media in adjacent flow channels. While this may not directly cause safety accidents, it significantly reduces heat exchange efficiency and system operational accuracy. Therefore, there is an urgent need for a new type of heat exchange plate that can effectively avoid the risk of flow channel crushing through its physical structure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-flow heat exchange plate with an internal interlocking support flow-blocking structure, which addresses the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure, characterized in that: it includes a first plate and a second plate that cooperates with the first plate; the pressing surface of the first plate is provided with a plurality of first main support ribs, a plurality of second main support ribs formed by subtractive processing, and a raised sealing dam located on the first and second main support ribs; the pressing surface of the second plate is provided with a plurality of third main support ribs symmetrical to the first main support ribs, a plurality of fourth main support ribs symmetrical to the second main support ribs, and a raised sealing dam located on the third main support ribs; the pressing surface of the second plate is provided with a plurality of third main support ribs symmetrical to the first main support ribs, a plurality of fourth main support ribs symmetrical to the second main support ribs, and a raised sealing dam located on the third main support ribs. The main support ribs and the fourth main support ribs have recessed sealing grooves; the first main support ribs are one more than the second main support ribs and the two are arranged in a centrally symmetrical manner. The width of the first main support ribs and the second main support ribs varies linearly from 2mm to 8mm. The narrow end of the first main support rib is integrally connected to the first side of the first plate. The wide end of the first main support rib is a convex semi-circular arc. The narrow end of the second main support rib is integrally connected to the second side of the first plate. The multiple first main support ribs and the multiple second main support ribs form a continuous flow channel that causes the fluid to serpentine. The liquid inlet and liquid outlet of the flow channel are connected to the outside.

[0005] The above-mentioned high-flow heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the outer periphery of the first plate and the second plate is connected by a sealing weld, and the sealing weld is an electron beam sealing weld.

[0006] The above-mentioned high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the first plate and the second plate are both niobium-zirconium alloy plates.

[0007] The above-mentioned high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the first side and the second side of the first plate are arranged relatively parallel to each other.

[0008] The above-mentioned high-flow heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: a plurality of first main support ribs on the pressing surface of the first plate are arranged in parallel with each other, a plurality of second main support ribs on the pressing surface of the first plate are arranged in parallel with each other, each of the first and second main support ribs has two raised sealing dams arranged in parallel, and each of the third and fourth main support ribs has two recessed sealing grooves arranged in parallel, and the corresponding two raised sealing dams and two recessed sealing grooves are interlocked to form a double tenon-and-mortise interlocking sealing dam. The above-mentioned high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the cross-section of the raised sealing dam and the recessed sealing groove is a continuous sinusoidal curve structure, with a wave height H of 0.6mm to 1mm and a wave pitch P of 4mm to 6mm, and the ratio of wave height H to wave pitch P satisfies 0.1≤H / P≤0.25.

[0009] The above-mentioned high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the cross-section of the flow channel after the first plate and the second plate are joined is rectangular, with a height of 8mm and a hydraulic diameter of not less than 5mm.

[0010] The above-mentioned high-flow-rate heat exchange plate with an internal interlocking support flow-blocking structure is characterized in that: the liquid inlet and the liquid outlet are located at the same end of the plate. This utility model has the following advantages compared with the prior art: 1. The first plate of this utility model has multiple first main support ribs, multiple second main support ribs, and raised sealing dams on the first and second main support ribs formed by subtractive processing on its pressing surface. The second plate has multiple third main support ribs symmetrical to the first main support ribs, multiple fourth main support ribs symmetrical to the second main support ribs, and recessed sealing grooves on the third and fourth main support ribs formed by subtractive processing on its pressing surface. The number of first main support ribs is one more than that of second main support ribs, and the two are arranged in a centrally symmetrical manner. The width of the first and second main support ribs varies linearly from 2mm to 8mm. The large internal flow-guiding support rib network effectively bears the structural pressure and completely avoids the uniform high pressure required for overall diffusion welding, which would cause the large-size flow channel to collapse. The centrally symmetrically arranged flow-guiding support ribs actively guide the fluid to a sufficient serpentine flow, enhance fluid disturbance, and improve heat exchange efficiency.

[0011] 2. The parallel double sealing dam of this utility model constitutes "double insurance". Even if one sealing interface is extremely abnormal, the other can still play a role in blocking the flow, which is highly reliable. Through the optimized proportion of the sine wave curve convex and concave tenon interlocking sealing dam, a long anti-leakage path is formed in three-dimensional space, which realizes the isolation of fluids, especially easily leaking liquid metals.

[0012] 3. This utility model, through its internal mechanical interlocking structure, effectively solves the problem of media interpenetration between flow channels while achieving high flow rates, and possesses high structural reliability. It is particularly suitable for heat exchange scenarios involving harsh media such as liquid metals. By using electron beam sealing welding technology instead of diffusion welding, it fundamentally avoids the problem of flow channel collapse caused by local pressure concentration. Even in situations where diffusion welding must be used, its internal optimized support structure effectively prevents media interpenetration from a physical perspective and ensures the stability of the flow channel structure. At the same time, it meets the requirements of high flow rates and can significantly reduce the risk of collapse by moderately reducing welding pressure, making it easy to promote and use.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the first plate of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the second plate of this utility model.

[0017] Figure 4 for Figure 2 Enlarged view of point A.

[0018] Figure 5 for Figure 3 Enlarged view of point B.

[0019] Figure 6 This is a schematic diagram of the internal structure of the first and second plates of this utility model after they are joined together.

[0020] Figure 7 This is a schematic diagram of the serpentine flow path of the fluid within the heat exchange plate of this invention.

[0021] Explanation of reference numerals in the attached figures: 1—First plate; 2—Second plate; 3—Flow channel; 4—Double tenon-and-mortise interlocking sealing dam; 4-1—Raised sealing dam; 4-2—Recessed sealing groove; 6-1—First main support rib; 6-2—Second main support rib; 6-3—Third main support bar; 6-4—Fourth main support bar; 7—Sealing weld; 8—Liquid inlet; 9—Liquid outlet. Detailed Implementation

[0022] like Figures 1 to 7 As shown, this utility model includes a first plate 1 and a second plate 2 that mates with the first plate 1. The pressing surface of the first plate 1 is provided with a plurality of first main support ribs 6-1 formed by subtraction, a plurality of second main support ribs 6-2, and raised sealing dams 4-1 located on the first and second main support ribs 6-1 and 6-2. The pressing surface of the second plate 2 is provided with a plurality of third main support ribs 6-3 symmetrical to the first main support ribs 6-1 and a plurality of fourth main support ribs 6-4 symmetrical to the second main support ribs 6-2, and recessed sealing grooves 4-2 located on the third and fourth main support ribs 6-3 and 6-4, all formed by subtraction. The number of first main support ribs 6-1 is one more than that of second main support ribs 6-2, and the two are arranged in a centrally symmetrical manner. The width of the first main support ribs 6-1 and the second main support ribs 6-2 varies linearly from 2mm to 8mm. The narrow end of the first main support rib 6-1 is integrally connected to the first side of the first plate 1, and the wide end of the first main support rib 6-1 is an outwardly convex semi-circular arc. The narrow end of the second main support rib 6-2 is integrally connected to the second side of the first plate 1. The multiple first main support ribs 6-1 and the multiple second main support ribs 6-2 form a continuous flow channel 3 that causes the fluid to move in a serpentine manner. The liquid inlet 8 and the liquid outlet 9 of the flow channel 3 are connected to the outside.

[0023] In this embodiment, the outer periphery of the first plate 1 and the second plate 2 are connected by a sealing weld 7, which is an electron beam sealing weld.

[0024] In this embodiment, the sealing welding is performed by electron beam welding around the perimeter of the two plates in a vacuum environment to form a strong peripheral sealing weld.

[0025] In this embodiment, both the first plate 1 and the second plate 2 are niobium-zirconium alloy plates.

[0026] In actual production, both the first plate 1 and the second plate 2 are made of niobium-zirconium alloy (such as Nb-1Zr), and all internal features are integrally formed by precision subtractive processing (such as CNC milling).

[0027] In this embodiment, the first side and the second side of the first plate 1 are arranged parallel to each other.

[0028] In this embodiment, multiple first main support ribs 6-1 are arranged in parallel on the pressing surface of the first plate 1, and multiple second main support ribs 6-2 are arranged in parallel on the pressing surface of the first plate 1. Each of the first main support ribs 6-1 and the second main support ribs 6-2 has two raised sealing dams 4-1 arranged in parallel. Each of the third main support ribs 6-3 and the fourth main support ribs 6-4 has two recessed sealing grooves 4-2 arranged in parallel. The corresponding two raised sealing dams 4-1 and two recessed sealing grooves 4-2 are interlocked to form a double tenon-and-mortise interlocking sealing dam 4. In this embodiment, the cross-sections of the raised sealing dam 4-1 and the recessed sealing groove 4-2 are in the form of a continuous sinusoidal curve structure, with a wave height H of 0.6mm to 1mm and a wave distance P of 4mm to 6mm. The ratio of wave height H to wave distance P satisfies 0.1≤H / P≤0.25.

[0029] In this embodiment, the cross-section of the flow channel after the first plate 1 and the second plate 2 are joined is rectangular, with a height of 8mm and a hydraulic diameter of not less than 5mm.

[0030] In this embodiment, as Figure 2 and Figure 3 As shown, the preferred plate has eight first main support ribs and seven second main support ribs, arranged symmetrically at the center. All main support ribs are 4mm high and linearly vary in width between 2mm and 8mm, forming a flow guide shape. These ribs divide the plate into continuous, approximately rectangular large-sized flow channels 3. The cross-sections of the raised sealing dams 4-1 and the recessed sealing grooves 4-2 form a continuous sinusoidal curve with the following structural parameters: wave height H = 0.8mm, wave pitch P = 5mm, H / P = 0.16. When the first plate 1 and the second plate 2 are aligned, a complete rectangular flow channel with a height of 8mm is formed inside. Simultaneously, the two raised sealing dams 4-1 are precisely embedded in the two recessed sealing grooves 4-2, forming a double tenon-and-mortise interlocking seal. In this embodiment, the liquid inlet 8 and the liquid outlet 9 are located at the same end of the plate. See also Figure 7The liquid enters from the liquid inlet 8 at the same end, and under the guidance of 15 centrally symmetrically arranged guide-shaped support ribs, it completes an efficient serpentine flow and finally flows out from the liquid outlet 9 at the same end.

[0031] This invention features a large, internally distributed network of flow-guiding support ribs that effectively bears structural pressure, completely avoiding the uniform high pressure required for overall diffusion welding, which can lead to the collapse of large-sized flow channels. The centrally symmetrically arranged flow-guiding support ribs actively guide the fluid to a full serpentine flow, enhancing fluid turbulence and improving heat exchange efficiency. Through an internal mechanical interlocking structure, it effectively solves the problem of medium interpenetration between flow channels while achieving high flow rates, and possesses high structural reliability. It is particularly suitable for heat exchange scenarios involving harsh media such as liquid metals. By using electron beam sealing welding instead of diffusion welding, it fundamentally avoids the problem of flow channel collapse caused by localized pressure concentration. Even in situations where diffusion welding is necessary, its optimized internal support structure effectively prevents medium interpenetration from a physical perspective and ensures the stability of the flow channel structure, while meeting the requirements of high flow rates and significantly reducing the risk of collapse by moderately reducing welding pressure. The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure, characterized in that: The first plate (1) includes a first plate (1) and a second plate (2) that mates with the first plate (1). The pressing surface of the first plate (1) is provided with a plurality of first main support ribs (6-1), a plurality of second main support ribs (6-2) formed by subtraction, and raised sealing dams (4-1) located on the first main support ribs (6-1) and the second main support ribs (6-2). The pressing surface of the second plate (2) is provided with a plurality of third main support ribs (6-3) symmetrical to the first main support ribs (6-1), a plurality of fourth main support ribs (6-4) symmetrical to the second main support ribs (6-2), and recessed sealing grooves (4-2) located on the third main support ribs (6-3) and the fourth main support ribs (6-4). There is one more main support rib (6-1) than the second main support rib (6-2), and the two are arranged in a centrally symmetrical manner. The width of the first main support rib (6-1) and the second main support rib (6-2) varies linearly from 2mm to 8mm. The narrow end of the first main support rib (6-1) is integrally connected to the first side of the first plate (1). The wide end of the first main support rib (6-1) is an outwardly convex semi-circular arc. The narrow end of the second main support rib (6-2) is integrally connected to the second side of the first plate (1). Multiple first main support ribs (6-1) and multiple second main support ribs (6-2) form a continuous flow channel (3) that causes the fluid to move in a serpentine manner. The liquid inlet (8) and liquid outlet (9) of the flow channel (3) are connected to the outside.

2. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: The outer periphery of the first plate (1) and the second plate (2) are connected by a sealing weld (7), which is an electron beam sealing weld.

3. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: Both the first plate (1) and the second plate (2) are niobium-zirconium alloy plates.

4. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: The first side and the second side of the first plate (1) are arranged in parallel relative to each other.

5. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: On the pressing surface of the first plate (1), multiple first main support ribs (6-1) are arranged in parallel to each other, and multiple second main support ribs (6-2) are arranged in parallel to each other. The first main support ribs (6-1) and the second main support ribs (6-2) each have two raised sealing dams (4-1) arranged in parallel. The third main support ribs (6-3) and the fourth main support ribs (6-4) each have two recessed sealing grooves (4-2) arranged in parallel. The corresponding two raised sealing dams (4-1) and two recessed sealing grooves (4-2) are interlocked to form a double tenon-and-mortise interlocking sealing dam (4).

6. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: The cross-sections of the raised sealing dam (4-1) and the recessed sealing groove (4-2) are continuous sinusoidal curve structures, with a wave height H of 0.6mm to 1mm and a wave distance P of 4mm to 6mm. The ratio of wave height H to wave distance P satisfies 0.1≤H / P≤0.

25.

7. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: After the first plate (1) and the second plate (2) are joined together, the cross-section of the flow channel is rectangular, with a height of 8mm and a hydraulic diameter of not less than 5mm.

8. A high-flow-rate heat exchange plate with an internally interlocked support flow-blocking structure as described in claim 1, characterized in that: The liquid inlet (8) and liquid outlet (9) are located at the same end of the plate.

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