Plate-shell type heat exchanger for hydrogen production

Abstract

The invention discloses a shell-and-plate heat exchanger for hydrogen production, belongs to the technical field of heat exchangers, and aims to solve the problems that a plate bundle deformation position cannot be accurately positioned conveniently, a channel gap between plates is small, and blockage is easy to occur, the shell-and-plate heat exchanger comprises a shell and a pair of supporting legs fixedly arranged on the circumferential side wall of the shell, a first liquid inlet and a first liquid outlet are fixedly formed in the side wall of one end of the shell in a communicating mode, a second liquid inlet and a second liquid outlet are fixedly formed in the circumferential side wall of the shell in a communicating mode, a plate bundle is arranged in the shell, connecting assemblies are fixedly connected to the first liquid inlet and the second liquid inlet respectively, and a plurality of releasing assemblies are arranged on the connecting assemblies. According to the device, a worker can be assisted in preliminarily judging whether the interior of the corrugated plate is deformed or not, a part of a biological membrane or dirt adsorbed on the side wall of an inter-plate channel can be shaken off, and the biological membrane or the dirt is discharged along with a medium; and the effect of relieving blockage is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and more specifically, to a plate-shell heat exchanger for hydrogen production. Background Art

[0002] The plate-shell heat exchanger mainly realizes heat exchange through a corrugated plate bundle. It is a new type of heat exchange device evolved from the integration of plate heat exchanger and shell-and-tube heat exchanger technologies, and has the dual advantages of plate heat exchanger and shell-and-tube heat exchanger, making the plate-shell heat exchanger have both high heat transfer efficiency and strong high load-bearing capacity. Therefore, the plate-shell heat exchanger is widely used in the field of hydrogen production and other industrial fields.

[0003] Although the current plate-shell heat exchangers are applied in many fields, there are still defects, specifically as follows: during the use of the plate-shell heat exchanger, individual corrugated plates in the plate bundle may be deformed due to various reasons, resulting in the failure of the seal between two corrugated plates, which will in turn affect the heat exchange effect. Usually, manual disassembly is required to find the deformed position, which is cumbersome, time-consuming and laborious; currently, there are also technologies such as eddy current detection, three-dimensional imaging technology and other technologies to judge the deformed position of individual corrugated plates in the plate bundle, which not only have high costs, but also may not be able to accurately locate the deformed position; in addition, due to the small gap between the inter-plate channels of two adjacent corrugated plates in the plate bundle, the requirement for the cleanliness of the fluid is relatively high, and blockage is likely to occur. Summary of the Invention

[0004] Therefore, in order to solve the above deficiencies, the present invention provides a plate-shell heat exchanger for hydrogen production here. By using this device to work, the problems of deformation of individual corrugated plates in the above background, manual disassembly to find the deformed position, which is cumbersome, time-consuming and laborious, and the problem that it may not be able to accurately locate the deformed position through eddy current detection, three-dimensional imaging technology and other technologies are solved; in addition, the problem of easy blockage due to the small gap between the inter-plate channels of two adjacent corrugated plates in the plate bundle is also solved. To achieve the above object.

[0005] The present invention provides the following technical solutions: A plate-shell heat exchanger for hydrogen production includes a housing and a pair of legs fixedly arranged on the circumferential side wall of the housing. A liquid inlet one and a liquid outlet one are respectively fixedly connected and communicated on one end side wall of the housing. A liquid inlet two and a liquid outlet two are fixedly installed and communicated on the circumferential side wall of the housing. A plate bundle is arranged inside the housing. Connecting components are respectively fixedly connected to the liquid inlet one and the liquid inlet two. A number of release components are arranged on the connecting components. A number of spheres are placed inside the release components. A driving mechanism is fixedly arranged on the connecting components; The sphere includes a spherical body. A magnetic layer is coated on the inner wall of the spherical body. A polygonal magnetic block is arranged inside the spherical body. The polygonal magnetic block and the inner wall of the spherical body are connected by a bracket.

[0006] Furthermore, the connecting assembly includes a connecting cylinder, and a plurality of through grooves are formed on the inner wall of the connecting cylinder.

[0007] Furthermore, the release component includes a protective shell fixedly installed, and the protective shell and the connecting cylinder are connected by a through groove. A sliding seat is slidably installed inside the protective shell, and a propulsion member is slidably installed inside the sliding seat. A top column is fixedly installed on the side wall of the sliding seat, and the top column is slidably arranged on the side wall of the protective shell. The top column and the side wall of the protective shell are elastically connected by a spring.

[0008] Furthermore, the protective shell includes a shell, a first clearance groove is opened on the top surface of the shell, a pair of sliding grooves are symmetrically opened on the side wall of the shell cavity, and a second clearance groove is opened on the side wall of the shell.

[0009] Furthermore, the slide includes a seat body, and a clamping strip is fixedly installed on the outer walls of both sides of the seat body, and the clamping strip is slidably installed on the slide groove. The interior of the seat body is respectively provided with a feeding channel, a storage channel and an installation groove, and the feeding channel, the storage channel and the installation groove are connected in sequence. A feeding port is fixedly installed at the upper end opening of the feeding channel, and a release hole is also provided inside the seat body, and the release hole is connected to the storage channel. A long groove is provided on the side wall of the seat body, and the long groove is connected to the installation groove.

[0010] Furthermore, the propulsion member includes a T-shaped plate slidably installed in the inner cavity of the mounting groove, the side wall of the T-shaped plate is elastically connected to the side wall of the inner cavity of the mounting groove by spring 2, and the distal end of the T-shaped plate is slidably set in the inner cavity of the storage channel, a pull rod is fixedly installed on the side wall of the T-shaped plate, and the pull rod is slidably set in the inner cavity of the long groove.

[0011] Furthermore, the driving mechanism includes a pair of fixed plates fixedly mounted on the side walls of the connecting cylinder, and a rotating shaft is mounted on the two fixed plates for common rotation. A motor is fixedly mounted on the side wall of one of the fixed plates, and the output end of the motor is fixedly connected to the rotating shaft. A number of levers are fixedly mounted on the circumferential outer wall of the rotating shaft, and the length of the levers increases from right to left, and the incremental length is the diameter difference between balls of different diameters in the storage channels of two adjacent release assemblies.

[0012] Furthermore, the plate bundle includes a corrugated plate, the corrugated plate is provided with a plurality of inter-plate channels, and a plurality of magnetic blocks are embedded at intervals on the side walls of the inter-plate channels.

[0013] Furthermore, the magnetic polarities of the magnetic layer and the polygonal magnetic blocks are opposite.

[0014] Furthermore, the sphere and the bracket are tough, elastic and supportive, and in a static state, the attraction between the magnetic layer and the polygonal magnetic block will not cause the sphere to deform.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the cooperative setting of the driving mechanism and the release component, a plurality of spheres with different diameters are released into the interior of the connecting cylinder, which can assist the staff in initially judging whether deformation occurs inside the corrugated plate, without the need to disassemble the plate-and-shell heat exchanger for detection, which is relatively intuitive and convenient.

[0016] 2. When a plurality of spheres with different diameters move in the inter-plate channels, the turbulence effect of the medium will be enhanced. This is not only beneficial to the heat transfer effect, but also when the spheres rub or collide with the inter-plate channels, a part of the biofilm or dirt adsorbed on the side walls of the inter-plate channels will be shaken off and discharged together with the medium, achieving the effect of relieving blockage, extending the cleaning cycle and reducing the usage amount of cleaning agents, thus achieving energy conservation, high efficiency and environmental protection.

[0017] 3. The present invention adopts the method of enhancing the magnetic field intensity to distinguish from the magnetic field intensity generated by the magnetic block, so as to achieve the effect of precise positioning, and then can accurately determine the deformation position of the corrugated plate.

[0018] 4. Due to the setting of a plurality of spheres with different diameters, when the field intensity meter detects multiple strong magnetic fields, it indicates that there are multiple deformations in the corrugated plate or multiple corrugated plates are deformed. Through the above settings, the maintenance work efficiency is greatly improved. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the installation position of the tube bundle of the present invention; Figure 3 is a schematic cross-sectional view of the connection component and the release component of the present invention; Figure 4 is an enlarged view of part A in Figure 3; Figure 5 is a schematic diagram of the installation position of the pusher of the present invention; Figure 6 is an exploded view of the release component of the present invention; Figure 7 is a three-dimensional structure diagram of the sliding seat of the present invention; Figure 8 is an enlarged view of part B in Figure 7; Figure 9 is a three-dimensional structure diagram of the driving mechanism of the present invention; Figure 10 is a schematic diagram of the installation position of the release component of the present invention; Figure 11 is a three-dimensional structure diagram of the tube bundle of the present invention; Figure 12 is an internal structure diagram of the sphere of the present invention.

[0020] In the figure: 1. Outer shell; 2. Legs; 3. First liquid inlet; 4. First liquid outlet; 5. Second liquid inlet; 6. Second liquid outlet; 7. Connection assembly; 71. Connection cylinder; 72. Through groove; 8. Release assembly; 81. Protective shell; 811. Shell body; 812. First relief groove; 813. Slide groove; 814. Second relief groove; 82. Slide seat; 821. Seat body; 822. Feeding channel; 823. Feed inlet; 824. Stock storage channel; 825. Installation groove; 826. Release hole; 827. Long groove; 828. Card strip; 829. Pull rod; 83. Pushing member; 831. T-shaped plate; 832. Second spring; 84. Thrust pillar; 85. First spring; 9. Driving mechanism; 91. Fixed plate; 92. Rotating shaft; 93. Poking rod; 94. Motor; 1-. Plate bundle; 101. Corrugated plate; 102. Inter-plate channel; 103. Magnet; 20. Sphere; 201. Sphere body; 202. Polygonal magnet; 203. Bracket; 204. Magnetic layer. Detailed implementation mode

[0021] The following will be combined with the attached Figures 1 - 12 The present invention will be described in detail. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In order to solve the problems that a single corrugated plate 101 in the plate bundle 10 is deformed and it is not convenient to accurately locate the deformation position, and the gap between the inter-plate channels 102 of two adjacent corrugated plates 101 in the plate bundle 10 is small and prone to blockage, as shown in FIGS. 1-12, the following preferred technical solutions are provided: As shown in FIGS. 1-2, a plate-shell heat exchanger for hydrogen production includes an outer shell 1 and a pair of legs 2 fixedly arranged on the circumferential side wall of the outer shell 1. The outer shell 1 is not only used to achieve a sealing effect but also used to protect the internal structure. A first liquid inlet 3 and a first liquid outlet 4 are fixedly connected and arranged on one end side wall of the outer shell 1 for transporting a heat medium. A second liquid inlet 5 and a second liquid outlet 6 are fixedly installed and communicated on the circumferential side wall of the outer shell 1 for transporting a cold medium. A plate bundle 10 is arranged inside the outer shell 1, and the heat medium and the cold medium exchange heat through the plate bundle 10. The specific heat exchange principle is the prior art and will not be specifically described here.

[0023] A connecting component 7 is fixedly connected to each of the liquid inlet 1 3 and the liquid inlet 2 5. A number of release components 8 are arranged on the connecting component 7. A number of spheres 20 are placed inside the release component 8. A driving mechanism 9 is fixedly arranged on the connecting component 7. The diameters of the spheres 20 placed in each release component 8 are different. As shown in Figures 3 to 5, whenever the plate-shell heat exchanger operates for a period of time, the driving mechanism 9 drives a number of release components 8 to extend into the inside of the connecting component 7, and then releases the spheres 20 with different diameters placed inside the a number of release components 8 into the inside of the connecting component 7. The released spheres 20 will enter the tube bundle 10 following the medium. If there is no deformation inside the tube bundle 10, the a number of spheres 20 with different diameters will be discharged from the liquid outlet 1 4 or the liquid outlet 2 6. If deformation occurs inside the tube bundle 10, a part of the spheres 20 will be stuck inside the tube bundle 10. Since the spheres 20 are magnetic, the position of the spheres 20 can be detected by an external field intensity meter (not shown in the figure), and thus the position where deformation occurs inside the tube bundle 10 can be accurately located. In addition, during the process of the spheres 20 moving inside the tube bundle 10, the dirt inside the tube bundle 10 can be impacted, so that the dirt inside the tube bundle 10 can be cleaned. This not only enables the plate-shell heat exchanger to maintain a good heat transfer effect, but also reduces the number of times of cleaning inside the tube bundle 10, playing a role of energy saving and high efficiency. Therefore, it is very necessary to regularly release the spheres 20 into the inside of the connecting component 7 through the driving mechanism 9 and the release component 8 and then into the inside of the tube bundle 10.

[0024] As shown in Figure 3, the connecting component 7 includes a connecting cylinder 71, and a number of through slots 72 are opened on the inner wall of the connecting cylinder 71.

[0025] As shown in Figure 3, the release component 8 includes a protective shell 81 fixedly installed, and the protective shell 81 is communicated with the connecting cylinder 71 through the through slot 72. A sliding seat 82 is slidably installed inside the protective shell 81. The sphere 20 is placed inside the sliding seat 82. A pushing member 83 is slidably arranged inside the sliding seat 82. The purpose of arranging the pushing member 83 is to always press the sphere 20 against the end of the sliding seat 82 to achieve the feeding function. A top column 84 is fixedly installed on the side wall of the sliding seat 82. The top column 84 penetrates and is slidably arranged on the side wall of the protective shell 81. The top column 84 and the side wall of the protective shell 81 are elastically connected by a first spring 85. The setting of the first spring 85 is used to reset the sliding seat 82.

[0026] As shown in Figure 3, when the driving mechanism 9 operates, it will drive the end of the sliding seat 82 to pass through the through groove 72 into the interior of the connecting cylinder 71 through the top column 84. When a spherical ball 20 is completely exposed inside the connecting cylinder 71, under the impact of the medium, the spherical ball 20 exposed inside the connecting cylinder 71 will be washed away and enter the interior of the tube bundle 10; then the driving mechanism 9 no longer acts on the first top column 84. Under the elastic force of the first spring 85, the sliding seat 82 quickly resets. The driving mechanism 9 continues to operate and acts on the second top column 84 and the third top column 84 in sequence, thereby releasing spherical balls 20 of different diameters. Through such a setting, for spherical balls 20 of the same diameter, only one can be released each time. Also, since the diameters of the spherical balls 20 placed in each release assembly 8 are different, the effect of multiple spherical balls 20 of different diameters passing through the interior of the tube bundle 10 can be achieved.

[0027] As shown in Figure 6, the protective shell 81 includes a shell body 811. A first relief groove 812 is formed on the top surface of the shell body 811. A pair of sliding grooves 813 are symmetrically formed on the side wall of the inner cavity of the shell body 811. A second relief groove 814 is formed on the side wall of the shell body 811.

[0028] As shown in Figures 5 - 8, the sliding seat 82 includes a seat body 821. Clamping strips 828 are respectively and fixedly installed on the outer side walls on both sides of the seat body 821, and the clamping strips 828 are slidably installed on the sliding grooves 813. A feeding channel 822, a material storage channel 824, and an installation groove 825 are respectively formed inside the seat body 821, and the feeding channel 822, the material storage channel 824, and the installation groove 825 are communicated in sequence. A feed port 823 is fixedly installed at the upper opening of the feeding channel 822. A release hole 826 is also formed inside the seat body 821, and the release hole 826 is communicated with the material storage channel 824. A long groove 827 is formed on the side wall of the seat body 821, and the long groove 827 is communicated with the installation groove 825.

[0029] As shown in Fig. 5, the pusher 83 includes a T-shaped plate 831 slidably installed in the inner cavity of the installation groove 825. The side wall of the T-shaped plate 831 is elastically connected to the side wall of the inner cavity of the installation groove 825 by a second spring 832. The far end of the T-shaped plate 831 is slidably arranged in the inner cavity of the storage channel 824. As shown in Figs. 6-7, a pull rod 829 is fixedly installed on the side wall of the T-shaped plate 831, and the pull rod 829 is slidably arranged in the inner cavity of the long groove 827. The pull rod 829 is used to reset the T-shaped plate 831. After the staff pulls the pull rod 829 to reset the T-shaped plate 831, the ball 20 is introduced into the feeding channel 822 from the feeding port 823, and then enters the storage channel 824 for temporary storage. After the ball 20 is put in, the staff releases the pull rod 829. Under the elastic force of the second spring 832, the T-shaped plate 831 applies a thrust to the ball 20 in the storage channel 824, so that the ball 20 at the far end is always inside the release hole 826, which is convenient for later releasing the ball 20 into the inner part of the connecting cylinder 71.

[0030] As shown in Figs. 3 and 9, the driving mechanism 9 includes a pair of fixing plates 91 fixedly installed on the side wall of the connecting cylinder 71. A rotating shaft 92 is rotatably installed on the two fixing plates 91 together. A motor 94 is fixedly installed on the side wall of one of the fixing plates 91. The output end of the motor 94 is fixedly connected to the rotating shaft 92. A plurality of dial rods 93 are fixedly installed on the circumferential outer wall of the rotating shaft 92. The lengths of the dial rods 93 increase in turn from right to left, and the increasing length is the diameter difference of the balls 20 with different diameters in the storage channel 824 of two adjacent release assemblies 8.

[0031] When it is necessary to release the spherical ball 20, start the motor 94 to drive the rotating shaft 92 and the lever 93 to rotate synchronously. As shown in Fig. 9, during the rotation process, the rightmost lever 93 will first contact the ejector pin 84 on the rightmost release assembly 8. Then, as shown in Figs. 3 - 7, during the movement of the ejector pin 84, it will synchronously drive the seat body 821 to move towards the inside of the connecting cylinder 71. When the seat body 821 moves to the maximum moving distance, the release hole 826 is just inside the connecting cylinder 71. Under the impact of the medium, the spherical ball 20 in the release hole 826 can be washed away. At this time, the rightmost lever 93 gradually passes over the ejector pin 84 and disengages from it. Under the elastic force of the first spring 85, the ejector pin 84 drives the seat body 821 to quickly reset and withdraw the release hole 826 from the inside of the connecting cylinder 71, which can prevent the situation of washing away multiple spherical balls 20 with the same diameter at one time; after the rightmost lever 93 disengages from the ejector pin 84, as the driving mechanism 9 continues to operate, the middle lever 93 in Fig. 9 will contact the ejector pin 84 on the middle release assembly 8, and then release the spherical ball 20 with a larger diameter in the middle release assembly 8; since the diameters of the spherical balls 20 placed in different release assemblies 8 are inconsistent, therefore, the apertures of the release holes 826 on different release assemblies 8 are also inconsistent, and the lengths of the levers 93 increase sequentially from right to left, and the increasing length is the diameter difference between the spherical balls 20 with different diameters in the storage channels 824 of two adjacent release assemblies 8. The purpose of this setting is that when releasing spherical balls 20 with different diameters, it can just push the corresponding release holes 826 with different apertures into the inside of the connecting cylinder 71, and exactly make each release hole 826 release only one spherical ball 20 with the corresponding diameter each time, and finally make multiple spherical balls 20 with different diameters enter the inside of the connecting cylinder 71.

[0032] The plate bundle 10 includes corrugated plates 101, and a number of inter-plate channels 102 are provided on the corrugated plates 101. A number of magnetic blocks 103 are embedded at intervals on the side walls of the inter-plate channels 102.

[0033] Specifically, according to the usage instructions and specification requirements of the plate-shell heat exchanger, the overhaul period and cleaning period are determined. When the plate-shell heat exchanger needs to be overhauled, the drive mechanism 9 is started to drive multiple different release components 8 to operate, and spherical balls 20 with different diameters in the multiple different release components 8 are released into the interior of the connecting cylinder 71. The diameters of the multiple spherical balls 20 increase in sequence, and the maximum diameter shall not exceed the width of the inter-plate channel 102. Under the impact of the medium, the multiple spherical balls 20 with different diameters will enter the inter-plate channel 102. If all the spherical balls 20 are discharged from the second liquid inlet 5 or the second liquid outlet 6, it indicates that the spherical balls 20 are not stuck, and further indicates that the corrugated plate 101 has not been deformed. If some or all of the spherical balls 20 are not discharged from the second liquid inlet 5 or the second liquid outlet 6, it can be judged that the interior of the corrugated plate 101 is deformed, causing the width of the inter-plate channel 102 to become narrower and jamming the spherical balls 20. Through such a setting, it can assist the staff to initially judge whether the interior of the corrugated plate 101 is deformed, without the need to disassemble the plate-shell heat exchanger for detection, which is relatively intuitive and convenient. In addition, when the multiple spherical balls 20 with different diameters move in the inter-plate channel 102, it will strengthen the turbulence effect of the medium, which is not only beneficial to the heat transfer effect, but also when the spherical balls 20 rub or collide with the inter-plate channel 102, a part of the biofilm or dirt adsorbed on the side wall of the inter-plate channel 102 will be shaken off and discharged together with the medium, playing a role in relieving blockage, extending the cleaning period and reducing the usage amount of cleaning agents, achieving energy conservation, high efficiency and environmental protection.

[0034] To solve the technical problem that several magnetic blocks 103 are embedded at intervals on the side wall of the inter-plate channel 102, and if the magnetic field strength is directly measured, there will be interference, and the deformation position of the corrugated plate 101 cannot be accurately positioned. As shown in FIGS. 11-12, the following preferred technical solution is provided: The spherical ball 20 includes a spherical body 201, and a magnetic layer 204 is coated on the inner wall of the spherical body 201. A polygonal magnetic block 202 is arranged inside the spherical body 201, and the polygonal magnetic block 202 is connected to the inner wall of the spherical body 201 through a bracket 203.

[0035] The magnetic poles of the magnetic layer 204 and the polygonal magnetic block 202 are opposite, and the spherical body 201 and the bracket 203 have toughness, elasticity and support, and in the static state, the attraction between the magnetic layer 204 and the polygonal magnetic block 202 will not cause the spherical ball 20 to deform.

[0036] Specifically, since the interior of the spherical ball 20 is provided with a polygonal magnetic block 202, when the spherical ball 20 moves within the inter-plate channel 102, under the magnetic force of the magnetic block 103, an attractive force will be generated on the polygonal magnetic block 202. Also, since several magnetic blocks 103 are arranged at intervals, the spherical ball 20 moves along a "Z"-shaped trajectory within the inter-plate channel 102, further enhancing the turbulent effect of the medium and the effect of shaking off the biofilm or dirt adsorbed on the side wall of the inter-plate channel 102. In addition, when the corrugated plate 101 is deformed and the inter-plate channel 102 becomes narrower and jams the spherical ball 20, under the pressure of the medium, the spherical body 201 and the polygonal magnetic block 202 will be deformed, and then the magnetic force layer 204 and the polygonal magnetic block 202 will approach and adsorb to each other. When the magnetic force layer 204 and the polygonal magnetic block 202 are adsorbed together, a magnetic field superposition phenomenon will occur, and then the overall magnetic field strength of the magnetic force layer 204 and the polygonal magnetic block 202 will be enhanced. At this time, the staff measures the magnetic field strength with a field strength meter and marks the part with the strongest magnetic field strength, and then the exact deformation position can be obtained. Since several magnetic blocks 103 are embedded at intervals on the side wall of the inter-plate channel 102, if the magnetic field strength is directly measured, interference will occur. By the above method of enhancing the magnetic field strength to distinguish from the magnetic field strength generated by the magnetic block 103, the effect of precise positioning can be achieved, and then the deformation position of the corrugated plate 101 can be accurately determined. In addition, since multiple spherical balls 20 with different diameters are provided, when the field strength meter detects multiple stronger magnetic fields, it means that there are multiple deformations on the corrugated plate 101 or multiple corrugated plates 101 are deformed. Through the above settings, not only can it assist the operator to judge the deformation position of the corrugated plate 101, but also it can judge that there are multiple deformations on the corrugated plate 101 or multiple corrugated plates 101 are deformed, greatly improving the work efficiency.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plate-shell heat exchanger for hydrogen production, comprising a housing (1) and a pair of legs (2) fixedly arranged on the circumferential side wall of the housing (1). A first liquid inlet (3) and a first liquid outlet (4) are fixedly connected and arranged on one end side wall of the housing (1). A second liquid inlet (5) and a second liquid outlet (6) are fixedly installed and communicated on the circumferential side wall of the housing (1), and it is characterized in that: A plate bundle (10) is provided inside the housing (1), and a connecting assembly (7) is fixedly connected to the first liquid inlet (3) and the second liquid inlet (5), respectively. The connecting assembly (7) is provided with a plurality of release assemblies (8), and a plurality of spheres (20) are placed inside the release assemblies (8). A driving mechanism (9) is fixedly provided on the connecting assembly (7); the sphere (20) includes a sphere (201), the inner wall of the sphere (201) is coated with a magnetic layer (204), and a polygonal magnetic block (202) is provided inside the sphere (201), and the polygonal magnetic block (202) is connected to the inner wall of the sphere (201) via a bracket (203).

2. The plate-shell heat exchanger for hydrogen production according to claim 1, characterized in that: The connecting assembly (7) comprises a connecting cylinder (71), and a plurality of through grooves (72) are formed on the inner wall of the connecting cylinder (71).

3. The plate and shell heat exchanger for hydrogen production according to claim 2, wherein: The release assembly (8) includes a protective shell (81) fixedly mounted thereon, and the protective shell (81) and the connecting cylinder (71) are connected via a through groove (72), a slide seat (82) is slidably mounted inside the protective shell (81), a propulsion member (83) is slidably mounted inside the slide seat (82), a top column (84) is fixedly mounted on the side wall of the slide seat (82), the top column (84) is slidably mounted on the side wall of the protective shell (81), and the top column (84) is elastically connected to the side wall of the protective shell (81) via a spring (85).

4. The plate-shell heat exchanger for hydrogen production according to claim 3, wherein: The protective shell (81) includes a shell (811), a first clearance groove (812) is provided on the top surface of the shell (811), a pair of sliding grooves (813) are symmetrically provided on the side wall of the inner cavity of the shell (811), and a second clearance groove (814) is provided on the side wall of the shell (811).

5. The plate and shell heat exchanger for hydrogen production according to claim 4, characterized in that: The slide (82) includes a seat body (821), and a clamping strip (828) is fixedly installed on the outer walls of both sides of the seat body (821), and the clamping strip (828) is slidably installed on the slide groove (813). The interior of the seat body (821) is respectively provided with a feeding channel (822), a storage channel (824) and an installation groove (825), and the feeding channel (822), the storage channel (824) and the installation groove (825) are connected in sequence. A feeding port (823) is fixedly installed at the upper opening of the feeding channel (822). A release hole (826) is also provided inside the seat body (821), and the release hole (826) is connected to the storage channel (824). A long groove (827) is provided on the side wall of the seat body (821), and the long groove (827) is connected to the installation groove (825).

6. The plate-shell heat exchanger for hydrogen production according to claim 5, wherein: push The feed member (83) includes a T-shaped plate (831) slidably mounted in the inner cavity of the mounting groove (825), the side wall of the T-shaped plate (831) and the side wall of the inner cavity of the mounting groove (825) are elastically connected by a second spring (832), and the distal end of the T-shaped plate (831) is slidably mounted in the inner cavity of the storage channel (824), a pull rod (829) is fixedly mounted on the side wall of the T-shaped plate (831), and the pull rod (829) is slidably mounted in the inner cavity of the long groove (827).

7. The plate and shell heat exchanger for hydrogen production according to claim 2, wherein: The driving mechanism (9) includes a pair of fixed plates (91) fixedly installed on the side wall of the connecting cylinder body (71). A rotating shaft (92) is rotatably installed on the two fixed plates (91) together. A motor (94) is fixedly installed on the side wall of one of the fixed plates (91). The output end of the motor (94) is fixedly connected to the rotating shaft (92). A plurality of dial rods (93) are fixedly installed on the circumferential outer wall of the rotating shaft (92). The lengths of the dial rods (93) increase sequentially from right to left, and the increasing length is the diameter difference of the spheres (20) with different diameters in the material storage channels (824) of two adjacent release components (8).

8. A plate and shell heat exchanger for hydrogen production according to claim 1, characterized in that: The plate bundle (10) includes corrugated plates (101). The corrugated plates (101) are provided with a plurality of inter-plate channels (102). A plurality of magnetic blocks (103) are embedded in the side walls of the inter-plate channels (102) at intervals.

9. The plate and shell heat exchanger for hydrogen production according to claim 1, wherein: The magnetic pole of the magnetic layer (204) is opposite to that of the polygonal magnetic block (202).

10. The plate-shell heat exchanger for hydrogen production according to claim 1, characterized in that: The sphere (201) and the bracket (203) have toughness, elasticity and support. And in the static state, the attraction between the magnetic layer (204) and the polygonal magnetic block (202) will not cause the sphere (20) to deform.

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