Heat exchanger and heat exchange system for a nuclear reactor

Abstract

Embodiments of the present application provide a heat exchanger, comprising: a shell, a plurality of plate bodies arranged in the shell, each plate body having a flow channel formed inside, the flow channel being in fluid communication with the outside of the shell; a plurality of tube bodies arranged in the shell and in fluid communication with the outside of the shell, each tube body being arranged between two plate bodies and extending along the surface of the plate bodies, so that the fluid in the tube body can exchange heat with the fluid in the flow channel, and a gap between the tube body and the plate body being filled with gas; and a monitoring member arranged to monitor the gas pressure in the gap to monitor the fluid leakage in the tube body and the flow channel. Embodiments of the present application also provide a heat exchange system of a reactor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange devices, in particular to a heat exchanger and a heat exchange system of a reactor. BACKGROUND

[0002] The heat exchanger is a commonly used device in industrial systems, which completes heat exchange by means of heat transfer between the heat exchange medium and the substance to be exchanged. In some use cases, the heat exchange medium / substance to be exchanged may be toxic, harmful, flammable and explosive, or the heat exchanger may be applied in a high-temperature and high-pressure system, or the direct contact between the heat exchange medium and the substance to be exchanged may cause a violent reaction. In these use cases, if the heat exchange medium or the substance to be exchanged in the heat exchanger leaks, it may cause serious consequences. Therefore, it is necessary to provide a heat exchanger capable of efficiently and accurately monitoring whether the heat exchange medium or the substance to be exchanged in the heat exchanger leaks. SUMMARY

[0003] In view of the above problems, the present application is proposed to provide a heat exchanger and a heat exchange system of a reactor which can overcome the above problems or at least partially solve the above problems.

[0004] According to a first aspect of the embodiments of the present application, a heat exchanger is provided, comprising: a shell, a plurality of plate bodies arranged in the shell, each plate body internally formed with a flow channel, the flow channel being in fluid communication with the outside of the shell; a plurality of tube bodies arranged in the shell and in fluid communication with the outside of the shell, each tube body being arranged between two plate bodies and extending along the surface of the plate body, so that the fluid in the tube body can exchange heat with the fluid in the flow channel, and the gap formed between the tube body and the plate body is filled with gas; a monitoring member arranged to monitor the gas pressure in the gap to monitor the leakage of the fluid in the tube body and the flow channel.

[0005] According to a second aspect of the embodiments of the present application, a heat exchange system of a reactor is provided, comprising a plurality of heat exchangers as described in the first aspect of the embodiments of the present application, and the plurality of heat exchangers are arranged around the core of the reactor.

[0006] The heat exchanger and the heat exchange system of the reactor provided by the embodiments of the present application can efficiently and accurately monitor whether the heat exchange medium and the substance to be exchanged leak, and have high safety. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is a front view of the heat exchanger according to the embodiments of the present application;

[0008] Figure 2 is a schematic view of the A-A cross section of the heat exchanger according to the embodiments of the present application;

[0009] Figure 3 is Figure 2Figure 6 is a schematic view of a B section of the heat exchanger shown in Figure 5;

[0010] Figure 4 Figure 7 is a schematic view of a C-C section of the heat exchanger shown in Figure 5; Figure 3

[0011] Figure 5 Figure 8 is a schematic view of a section of the heat exchanger according to an embodiment of the present application;

[0012] Figure 6 Figure 9 is a schematic view of another section of the heat exchanger according to an embodiment of the present application;

[0013] Figure 7 Figure 10 is a schematic view of yet another section of the heat exchanger according to an embodiment of the present application;

[0014] Figure 8 Figure 11 is a schematic view of a heat exchange system of a reactor according to an embodiment of the present application;

[0015] Figure 9 Figure 12 is a top view of the heat exchanger according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are one embodiment of the present application, rather than all embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0017] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as their common meanings by those of ordinary skill in the art to which the present application belongs. If the descriptions of “first”, “second”, etc. are used throughout the text, the “first”, “second”, etc. descriptions are only used to distinguish similar objects, and cannot be understood as indicating or implying the relative importance, the order of precedence or implicitly indicating the number of the indicated technical features. It should be understood that the data of “first”, “second”, etc. descriptions can be interchanged under appropriate circumstances. If “and / or” appears throughout the text, it means that three parallel schemes are included, for example, “A and / or B” includes A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0018] The embodiments of the present application first provide a heat exchanger, which can be applied in any industrial system requiring configuration of a heat exchange device, for example, can be applied to nuclear reactors, power systems, chemical systems, pharmaceutical systems, petroleum systems, etc.

[0019] Figure 1 ​Fig. 1 shows a front view of a heat exchanger according to an embodiment of the present application, Figure 2 As shown in Fig. 1, Figure 1 Fig. 2 shows a cross-sectional view of the heat exchanger along A-A, Figure 3 As shown in Fig. 2, Figure 2 Fig. 3 shows an enlarged view of the B part of the heat exchanger shown in Fig. 2, please refer to Figures 1-3 The heat exchanger provided by the embodiment of the present application comprises a shell 10, a plurality of plate bodies 20, a plurality of tube bodies 30 and a monitoring member 40.

[0020] The plurality of plate bodies 20 are arranged inside the shell 10, and each plate body 20 is internally formed with a flow channel 21, which is in fluid communication with the outside of the shell 10. The flow channel 21 can be any passage that can allow fluid to flow therein, and the flow channel 21 can have a solid structure, for example, the flow channel 21 can be a pipe, or the flow channel 21 can also have no solid structure, but be formed by the solid structure of the plate body 20, and the arrangement of the flow channel 21 will be described in detail in the relevant part below, and thus will not be described here. The flow channel 21 can be in fluid communication with the outside of the shell 10 through an opening formed on the shell 10 or other suitable structure.

[0021] The plurality of tube bodies 30 are arranged inside the shell 10 and are in fluid communication with the outside of the shell 10, and the fluid communication between the tube body 30 and the outside of the shell 10 can also be achieved through an opening formed on the shell 10 or other suitable structure.

[0022] Referring to Figure 3 Each tube body 30 is arranged between two plate bodies 20 and extends along the surfaces of the two plate bodies 20, that is, each tube body 30 is clamped by the two plate bodies 20. A plurality of tube bodies 30 can be arranged side by side between each two plate bodies 20, and in some other embodiments, only one tube body 30 can be arranged between each two plate bodies 20, and the person skilled in the art can arrange according to the actual use requirement, and thus the limitation is not made here.

[0023] As described above, the tube body 30 and the flow channel 21 are in fluid communication with the outside of the shell 10, and in actual use, heat exchange medium and medium to be exchanged can be respectively introduced into the tube body 30 and the flow channel 21, for example, the medium to be exchanged is introduced into the tube body 30, and the heat exchange medium is introduced into the flow channel 21, and the medium to be exchanged flowing in the tube body 30 will exchange heat with the heat exchange medium in the flow channel 21 of the plate body 20 adjacent to the tube body 30 during the flow process through the plate body 20 and the tube wall of the tube body 30, thereby achieving heat exchange.

[0024] Further, the curvature of the surface of the tube 30 will be greater than the curvature of the surface of the plate 20, so that there will be a gap between the tube 30 clamped in the two plates 20 and the two plates 20, and in the embodiment, the gap is filled with gas, and the monitoring member 40 is arranged to monitor the gas pressure in the gap to monitor the fluid leakage in the tube 30 and the flow channel 21.

[0025] Understandably, in actual use, whether the fluid in the tube 30 leaks or the fluid in the flow channel 21 leaks, the fluid will first enter the gap and cause a change in the pressure in the gap, so that by monitoring the change in the pressure in the gap, the fluid leakage in the tube 30 and the flow channel 21 can be accurately found, and the use safety of the heat exchanger is improved. At the same time, the gap is filled with gas, i.e. has a certain pressure background, which makes that slight fluid leakage will cause a relatively obvious change in the gas pressure in the gap, improving the monitoring sensitivity.

[0026] Further, in some cases, the specific position where the leakage occurs can also be determined based on the gas pressure change trend monitored by the monitoring member 40. As an example, the fluid in the flow channel 21 can be supercritical CO2, and the fluid in the tube 30 can be liquid metal. If the gas pressure is monitored to decrease, it is possible that the liquid metal in the tube 30 has leaked, and if other pressure is monitored to increase, it is possible that the supercritical CO2 in the flow channel 21 has leaked.

[0027] As an example, the gas filled in the above-mentioned gap can be helium, argon, etc., which will not chemically react with the leaked fluid, and can further ensure the safety during the operation of the heat exchanger.

[0028] The monitoring member 40 can include at least one sensing device capable of sensing the gas pressure, such as a pressure sensor, which can be in gas communication with the gap in a suitable manner so as to be capable of sensing the gas pressure in the gap. The sensing device can be arranged inside the shell 10, or arranged outside the shell 10, preferably, the sensing device can be arranged outside the shell 10 to ensure its safety during use. The sensing device can be in gas communication with the gap through a suitable pipeline.

[0029] In some embodiments, the shell 10 can be sealed, and the gap can be open, and the gas pressure in the shell 10 can be directly monitored as the gas pressure in the gap. In some other embodiments, the gap can be sealed by some structure such as a sealing plate to form a sealed gas cavity, and the sensing device can monitor the gas pressure in the gas cavity as the gas pressure in the gap. The person skilled in the art can reasonably select the arrangement of the monitoring member 40 according to the arrangement of the pipe body 30 and the plate body 20 used, and details are not described herein.

[0030] Figure 4 For Figure 3 the heat exchanger shown in FIG. 1, referring to Figure 3 and Figure 4 In some embodiments, the plate body 20 can specifically include a first plate 22 and a second plate 23 adhered to each other, and the second plate 22 is formed with a groove on the surface facing the first plate 23, and the groove and the first plate 23 form the flow channel 21.

[0031] In the present embodiment, the plate body 20 is arranged in a split structure, and the first plate 22 and the second plate 23 can be connected together by welding. When the second plate 22 and the first plate 23 are adhered and welded, the groove on the surface of the second plate 22 will jointly define the flow channel 21 with the first plate 23. In some embodiments, the cross section of the groove on the surface of the second plate 22 can be semicircular to reduce the resistance of the fluid flowing in the flow channel 21.

[0032] Compared with arranging the flow channel inside a complete plate body, the process required for arranging the groove on the surface of the second plate 23 in the present embodiment is obviously simpler and lower in cost. In actual manufacturing process, the person skilled in the art can use electronic etching or other suitable methods to form the groove on the second plate 23, which is not limited.

[0033] In some embodiments, referring to Figure 3 the surface of the first plate 22 away from the second plate 23 is formed with a pipe groove 24, and the pipe body 30 is arranged in the pipe groove 24. Arranging the pipe groove 24 can increase the stability of the pipe body 30 during use, and avoid that the fluid in the pipe body 30 causes the pipe body 30 to vibrate violently during flowing and damages the pipe body 30.

[0034] In some embodiments, the surface of the first plate 23 away from the second plate 22 is formed with a plurality of pipe grooves 24 arranged side by side, and each pipe groove 24 is arranged with a pipe body 30. The pipe groove 24 in the present embodiment can further avoid that the plurality of pipe bodies 30 arranged between the two plate bodies 20 collide with each other due to vibration.

[0035] In the above embodiments, the cross section of the pipe groove 24 can be specifically configured as a rectangle, so that a gap is formed between each pipe body 30 and the pipe groove 24 where the pipe body 30 is located.

[0036] Figure 5 For a schematic view of a cross section of the heat exchanger, reference is made to Figure 5 A communication part 25 can be formed on the pipe groove 24 in some embodiments, which makes the gaps formed between the pipe body 30 and the plate body 20 communicate with each other, so as to ensure the gas flowability between the gaps, and further ensure the sensitivity of the monitoring by the monitoring member 40. The communication part 25 can be a through hole, a groove or other structure formed on the pipe groove 24, as long as it can make the gaps communicate with each other.

[0037] In some embodiments, a sealed monitoring cavity can be formed in the housing 10, and the plate body 20 can be arranged in the monitoring cavity, i.e., the gap is also located in the monitoring cavity. For example, reference is made to Figure 1 Two sealing plates 50 can be arranged in the housing 10, and the sealing plates 50 can be located at the top and bottom of the plate body 20 respectively, and the sealing plates 50 and the wall of the housing 10 together define a sealed cavity, and the monitoring member 40 can be in gas communication with the monitoring cavity, so as to monitor the gas pressure in the gap. The advantage of arranging the monitoring cavity is that it can effectively reduce the range of gas flow in the gap, thereby increasing the sensitivity of the monitoring member 40 when monitoring.

[0038] In some embodiments, reference is made to Figure 1 and Figure 5 The monitoring member 40 can specifically include: a monitoring pipe 41 arranged outside the housing 10, a connecting member 42 arranged on the housing 10 and capable of connecting the monitoring pipe 41 with the gap, and a pressure sensor 43 connected with the monitoring pipe 41, so as to monitor the gas pressure in the gap. The connecting member 42 can be a structure such as a sealing head, which can ensure the sealing of the inside of the housing 10 when connecting the monitoring pipe 41 with the gap, so as to avoid false judgment caused by gas leakage in the gap.

[0039] In some embodiments, still referring to Figure 1 The heat exchanger can further include a pressure relief member 60, which can release the pressure in the gap when the gas pressure in the gap is higher than a preset value. The pressure relief member 60 can be arranged in the monitoring pipe 41, or arranged on the housing 10, or arranged at other appropriate positions, as long as it can connect the gap with the external environment to release the pressure in the gap.

[0040] It can be understood that in some cases, the heat exchange medium and the medium to be heat exchanged may have a violent reaction and release a large amount of gas after being in contact, so that the gas pressure in the gap is extremely high, and if the pressure is not released in time, the tube body 30, the plate body 20 and the like may be deformed or damaged again under the action of the pressure, resulting in serious consequences. Therefore, the pressure relief member 60 is further provided in the embodiment to enable the gas pressure in the gap to be released in time.

[0041] In some embodiments, the tube wall of the monitoring tube 41 can be provided in a double-layer structure, so that when the inner layer structure or the outer layer structure is corroded and damaged, the leakage of the fluid can still be effectively prevented.

[0042] In some embodiments, the pressure relief member 60 can be an electronic valve which can be electrically connected to and controlled by the monitoring member 40 and can automatically control the pressure relief member 60 to open when the gas pressure monitored by the monitoring member 40 is higher than a preset value. In some embodiments, the pressure relief member 60 can also be a mechanical valve which is arranged to automatically open when a pressure higher than a preset value is borne. Those skilled in the art can make settings according to actual needs, and no limitation is made herein.

[0043] Figure 6 and Figure 7 are schematic views of other two sections of the heat exchanger, and refer to Figure 6 and Figure 7 In some embodiments, a plurality of flow channels 21 can be formed in each plate body 20, and the plurality of flow channels 21 extend in a zigzag shape. For example, in the embodiments shown in Figure 6 and Figure 7 , the plurality of flow channels 21 are arranged side by side and extend in a zigzag shape. One advantage of the zigzag extension of the flow channels 21 is that the fluidity of the fluid in the flow channels 21 can be increased, and the flow direction of the fluid in the flow channels 21 is perpendicular to or at least forms an angle with the flow direction of the fluid in the tube body 30 at most positions, thereby improving the heat exchange efficiency. Another advantage of the zigzag extension of the flow channels 21 is that the manufacturing and processing are facilitated.

[0044] The embodiment of the present application also provides a heat exchange system of a reactor, referring to Figure 8 which comprises a plurality of heat exchangers 1 as described in any of the above embodiments, and the plurality of heat exchangers 1 can be arranged around the core 2 of the reactor. As an example, four heat exchangers can be arranged as shown in Figure 8 , and the four heat exchangers are uniformly distributed along the circumference of the core 2.

[0045] As described above, the heat exchanger in the heat exchange system of the embodiment can efficiently and accurately monitor whether the heat exchange medium and the medium to be heat exchanged leak, thereby ensuring the safety during operation.

[0046] Further, since the heat exchange system in the embodiment comprises multiple independent heat exchangers, when one of the heat exchangers fails, the heat exchanger can be repaired and replaced individually without replacing the entire system.

[0047] In some embodiments, the top cover of the shell 10 of the heat exchanger can be fixedly connected with the reactor. The fixed connection with the reactor through the top cover of the shell 10 can further facilitate the installation and disassembly between the heat exchanger and the reactor.

[0048] In some embodiments, the shell 10 and the plurality of plate bodies 20 can have the same arc-shaped cross section, and the center of the arc can point to the core 2 of the reactor. Figure 2 and Figure 8 Compared with conventional heat exchangers with a cubic shell, the heat exchanger in the embodiment has a larger intermediate region when it is used to form a heat exchange system, which is more conducive to arranging the core of the reactor, the driving mechanism of the control rod, and other components, so that the space inside the reactor is maximally utilized, facilitating the miniaturization and modularization of the reactor.

[0049] In some embodiments, referring to Figure 1 The shell 10 of the heat exchanger is provided with a coolant inlet 11 and a coolant outlet 12.

[0050] The coolant inlet 11 is arranged in fluid communication with the pipe body 30 and the core 2 of the reactor, so that the coolant in the core of the reactor can enter the pipe body 30 for heat exchange through the coolant inlet 11. The coolant inlet 11 can be arranged on the first side wall 101 of the shell 10 and located at the top of the pipe body 30. The first side wall 101 is the side wall of the shell 10 that faces the core 2 of the reactor. Arranging the coolant inlet 11 on the first side wall 101 can further facilitate the connection between the heat exchanger and the core, avoiding the occupation of a large amount of space by the connecting pipeline therebetween.

[0051] In some embodiments, a flow uniformizing plate can be arranged between the coolant inlet 11 and the pipe body 30. The flow uniformizing plate can make the coolant flow more uniformly into each pipe body 30, thereby improving the heat exchange effect.

[0052] The coolant outlet 12 is arranged in fluid communication with the pipe body 30 and the core 2 of the reactor. The coolant outlet 12 is arranged at the bottom of the shell 10. Arranging the coolant outlet 12 at the bottom of the shell 10 can accelerate the backflow of the coolant into the core 2, thereby improving the efficiency of the coolant circulation. In some embodiments, a liquid collecting cavity can be formed at the bottom of the shell 10. The coolant flowing out of the plurality of pipe bodies 30 can be collected in the liquid collecting cavity and then flow out through the coolant outlet 12, further improving the efficiency of the circulation.

[0053] Figure 9 A top view of the heat exchanger is shown, referring to Figure 1 、 6 , 7, 9, in some embodiments, the top of the shell 10 is provided with a heat exchange medium inlet 13 and a heat exchange medium outlet 14, which is provided here. The advantage of the heat exchange medium inlet 13 and the heat exchange medium outlet 14 is that the connection between the heat exchanger and the heat exchange medium source can be facilitated, and the connection pipeline between the two can occupy a large space.

[0054] The heat exchange medium inlet 13 is communicated with the flow channel 21 through the heat exchange medium inlet pipeline 15, and the heat exchange medium inlet pipeline 15 extends along the outer surface of the second side wall 102 of the shell 10 to the bottom of the plate body 20.

[0055] The heat exchange medium outlet 14 is communicated with the flow channel 21 through the heat exchange medium outlet pipeline 16, and the heat exchange medium outlet pipeline 16 extends along the outer surface of the third side wall 103 of the shell 10 to the top of the body 20.

[0056] In this embodiment, the heat exchange medium flows from the bottom to the top, and the coolant flows from the top to the bottom, and the convection is formed between them, so that the heat exchange efficiency can be further increased. As an example, the coolant of the reactor can be liquid metal, and the heat exchange medium can be supercritical CO2.

[0057] Further, the second side wall 102 and the third side wall 103 are two walls arranged opposite on the shell 10, and arranging the heat exchange medium inlet pipeline 15 and the heat exchange medium outlet pipeline 16 on the two walls respectively can make the two pipelines away from each other, avoid the heat exchange between the heat exchange medium in the two pipelines, so as to affect the heat exchange efficiency between the heat exchange medium and the coolant.

[0058] In some embodiments, the outer side of the heat exchange medium inlet pipeline 15 can be provided with a heat insulation layer. The heat insulation layer can avoid the heat exchange between the heat exchange medium and the coolant before entering the flow channel 21 to avoid the backflow due to the temperature rise.

[0059] In some embodiments, the connection between the heat exchange medium inlet pipeline 15 and the heat exchange medium outlet pipeline 16 and the shell 10 can be provided with a liquid collecting tank 17 to facilitate the heat exchange medium to enter and flow out of the flow channel 21. In some embodiments, the liquid collecting tank 17 at the heat exchange medium inlet pipeline 15 can be provided with a flow equalizing plate to make the heat exchange medium enter each flow channel 21 uniformly.

[0060] In some embodiments, the heat exchange medium inlet pipeline 15, the heat exchange medium outlet pipeline 16 and the liquid collecting tank 17 can be arranged in a double-layer structure, so that when one layer structure is corroded or damaged, the other layer structure can still effectively isolate the heat exchange medium from the coolant to avoid the violent reaction caused by the contact between the two.

[0061] For the embodiments of the present application, it should also be noted that the embodiments and features in the embodiments of the present application can be combined with each other to obtain new embodiments without conflict.

[0062] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heat exchanger, characterized by, It comprises: a shell, a plurality of plate bodies arranged in the shell, each of the plate bodies being internally formed with a flow channel in fluid communication with the outside of the shell; a plurality of tube bodies arranged in the shell and in fluid communication with the outside of the shell, each of the tube bodies being arranged between two of the plate bodies and extending along the surface of the plate bodies, so that the fluid in the tube bodies can exchange heat with the fluid in the flow channels, and the gap between the tube bodies and the plate bodies being filled with gas; a monitoring member arranged to monitor the gas pressure in the gap to monitor the leakage of the fluid in the tube bodies and the flow channels; each of the plate bodies comprises: a first plate and a second plate abutting each other, the second plate being formed with a groove on the surface of the side facing the first plate, the groove and the first plate forming the flow channel; the surface of the side of the first plate facing away from the second plate is formed with a tube groove, and the tube body is arranged in the tube groove.

2. The heat exchanger of claim 1, wherein, The surface of the side of the first plate facing away from the second plate is formed with a plurality of tube grooves arranged side by side, and each of the tube grooves is arranged with one of the tube bodies.

3. The heat exchanger of claim 2, wherein, The tube groove is formed with a communication part, and the communication part makes the plurality of gaps formed between the plate bodies and the tube bodies communicate with each other.

4. The heat exchanger of claim 1, wherein, The monitoring member comprises: a monitoring tube arranged outside the shell; a connecting member arranged on the shell, the connecting member being in gas communication with the gap; a pressure sensor connected to the monitoring tube.

5. The heat exchanger of claim 1, wherein, It also comprises: a pressure relief member capable of releasing the pressure in the gap when the gas pressure in the gap is higher than a preset value.

6. The heat exchanger of claim 1, wherein, A plurality of flow channels are formed in each of the plate bodies, and the plurality of flow channels extend in a zigzag shape.

7. A heat exchange system of a reactor, comprising: a plurality of heat exchangers according to any one of claims 1-6, the plurality of heat exchangers being arranged around the core of the reactor.

8. The heat exchange system of claim 7, wherein, The top cover of the shell is fixedly connected to the reactor.

9. The heat exchange system of claim 7, wherein, The cross section of the shell and the plurality of plate bodies is arc-shaped and has the same curvature, and the center of the arc points to the core of the reactor.

10. The heat exchange system of claim 7, wherein, The heat exchanger further comprises: a coolant inlet arranged in fluid communication with the tube bodies and the core of the reactor, the coolant inlet being arranged on the first side wall of the shell above the tube bodies, and the first side wall facing the core of the reactor; a coolant outlet arranged in fluid communication with the tube bodies and the core of the reactor, the coolant outlet being arranged at the bottom of the shell.

11. The heat exchange system of claim 10, wherein, The heat exchanger further comprises: a heat exchange medium inlet and a heat exchange medium outlet arranged at the top of the shell; a heat exchange medium inlet pipeline arranged to communicate the heat exchange medium inlet and the flow channels, the heat exchange medium inlet pipeline extending along the outer surface of the second side wall of the shell to the bottom of the plate bodies; a heat exchange medium outlet pipeline arranged to communicate the heat exchange medium outlet and the flow channels, the heat exchange medium outlet pipeline extending along the outer surface of the third side wall of the shell to the top of the plate bodies, and the second side wall and the third side wall being oppositely arranged.

12. The heat exchange system of claim 11, wherein, An outer side of the heat exchange medium inlet pipeline is provided with a heat insulation layer.

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