Novel heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to a novel heat exchanger. Comprising a barrel, an upper end cover, a first fluid pipe, a group of heat exchange plates, a pair of second fluid connecting pipes and a second fluid drainage pipe. A containing cavity with an opening in the upper end is formed in the cylinder body, and the upper end cover covers the cylinder body. The first fluid pipe is arranged in the containing cavity and comprises a pair of first fluid connecting pipes extending out of the cylinder body. The group of heat exchange plates are arranged in the accommodating cavity at intervals along the axial direction of the cylinder body and are sleeved on the first fluid pipe; and a group of overflowing holes are formed in the plates. The pair of second fluid connecting pipes are arranged on the upper end cover at intervals and communicated with the containing cavity. And the second fluid drainage pipe penetrates through the heat exchange plate and is axially communicated with the second fluid connecting pipe. When the heat exchanger exchanges heat, the first fluid continuously flows in the barrel, the second fluid continuously flows between the heat exchange plates, and the first fluid and the second fluid exchange heat through the heat exchange plates. A spiral runner is arranged in the first fluid pipe, the flowing time of the first fluid is prolonged, and the heat transfer efficiency is improved. The structure design is simple, the manufacturing cost is low, and the size is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a novel heat exchanger. Background Art

[0002] Heat exchanger is an energy-saving device that realizes heat transfer between two or more fluids at different temperatures. It transfers heat from a higher temperature fluid to a lower temperature fluid, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used.

[0003] In the existing heat exchangers used in the chemical industry, heat dissipation fins or heat dissipation plates are generally fixed on the outer wall of the heat exchange feed pipe to dissipate heat. In order to ensure that the material flowing inside can be thoroughly heat exchanged, the heat exchange feed pipe needs to be bent and coiled to increase the heat exchange effect. Such a design not only leads to high manufacturing costs and excessively large volume of the heat exchanger, but also makes it difficult to achieve the expected heat exchange effect. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a novel heat exchanger, which solves the technical problems that the heat exchanger has high manufacturing cost, is too large in size, and the heat exchange effect is difficult to achieve the expected effect.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A novel heat exchanger comprises: a cylinder, wherein a cavity with an upper end opening is provided in the cylinder; an upper end cover, wherein the upper end cover is arranged on the cylinder; a first fluid pipe, wherein the first fluid pipe is arranged in the cavity, wherein the first fluid pipe comprises a pair of first fluid connecting pipes, wherein the pair of the first fluid connecting pipes extend out of the outside of the cylinder; a group of heat exchange plates, wherein a group of the heat exchange plates are arranged in the cavity along the axial direction of the cylinder, wherein a group of the heat exchange plates are sleeved on the first fluid pipe, wherein a group of flow holes are provided on the heat exchange plates, wherein a group of the flow holes are arranged at intervals on the heat exchange plates; a pair of second fluid connecting pipes, wherein a pair of the second fluid connecting pipes are arranged at intervals on the upper end cover, wherein the pair of the second fluid connecting pipes are communicated with the cavity; and a second fluid drainage pipe, wherein the second fluid drainage pipe is passed through a group of heat exchange plates, wherein the second fluid drainage pipe is axially communicated with the second fluid connecting pipe.

[0006] Based on the above structure, the principle of the novel heat exchanger is: it is used to achieve heat transfer between the first fluid and the second fluid at different temperatures, and the first fluid and the second fluid at different temperatures are respectively injected through the corresponding first fluid connecting pipe and the second fluid connecting pipe, the first fluid enters the first fluid pipe, and the second fluid enters the cavity through the second fluid connecting pipe arranged on the upper end cover, and the second fluid falls from the uppermost heat exchange plate through a group of flow holes in sequence. Since a group of heat exchange plates are sleeved on the first fluid pipe and there is a temperature difference between the first fluid and the second fluid, the temperature of the first fluid will be transferred to a group of heat exchange plates through the first fluid pipe. In this process, the second fluid falls from the top to the bottom on a group of heat exchange plates in sequence. Due to the existence of the temperature difference, the two realize heat exchange; the second fluid is discharged from the cylinder through the second fluid drainage pipe arranged in the cavity and the second fluid connecting pipe.

[0007] Furthermore, in a novel heat exchanger in the present application, the first fluid pipe is U-shaped, and the first fluid pipe includes: a pair of vertical pipes and an arc-shaped pipe, the arc-shaped pipe and the pair of vertical pipes are both arranged in the cavity, the two ends of the arc-shaped pipe are respectively connected with a pair of vertical pipes, the pair of vertical pipes are both passed through a group of heat exchange plates, and the ends of a pair of vertical pipes away from the arc-shaped pipes are respectively connected with a pair of first fluid connecting pipes. As a preferred embodiment of the present application, the first fluid pipe in a novel heat exchanger in the present application is U-shaped, and the arc-shaped pipe can effectively buffer the impact force of the first fluid caused by pressure changes, thereby reducing the occurrence of water hammer phenomenon; at the same time, it can make the first fluid form a complex flow path in the first fluid pipe, increase the disturbance degree of the first fluid, and thus improve the heat exchange efficiency; the design of the U-shaped structure reduces the length of the first fluid pipe and the number of elbows, thereby saving materials and installation space, and reducing manufacturing costs.

[0008] Furthermore, in a novel heat exchanger in the present application, a pair of vertical tubes are provided with spiral flow channels, the spiral flow channels extend in a continuous spiral shape along the extension direction of the vertical tube, and the spiral flow channels connect the first fluid connecting pipe and the arc tube. As a preferred embodiment of the present application, in a novel heat exchanger in the present application, the design of the spiral flow channel is conducive to increasing the disturbance of the first fluid, and the spiral flow channel causes the first fluid to rotate during the flow process, forming a complex flow field structure, and this rotational motion continuously mixes and stirs the various parts of the first fluid, destroying the laminar boundary layer, making the temperature distribution inside the first fluid more uniform, thereby greatly enhancing the heat transfer and mass transfer effects; and extending the contact time, when the first fluid flows along the spiral flow channel, compared with the straight line flow, its travel in the vertical tube is longer, and the contact time with the vertical tube wall is increased, which provides more sufficient time for heat transfer and further improves the efficiency of heat transfer.

[0009] Furthermore, in a novel heat exchanger in the present application, a group of convex parts corresponding to a group of flow holes are also provided on the heat exchange plate, a group of the convex parts are arranged at intervals on the heat exchange plate, and a group of the convex parts and a group of flow holes are arranged at intervals along the radial direction of the cylinder. As a preferred embodiment of the present application, in a novel heat exchanger in the present application, the flow holes are used to guide the second fluid from the upper heat exchange plate to the lower heat exchange plate; the convex parts are designed to: when the second fluid flows through a group of convex parts, the convex parts have a turbulent effect on the second fluid, thereby increasing the flow time of the second fluid on the heat exchange plate, enhancing the heat exchange effect, and improving the heat exchange efficiency.

[0010] Furthermore, in a novel heat exchanger in the present application, the flow holes on a pair of upper and lower adjacent heat exchange plates are staggered. As a preferred embodiment of the present application, in a novel heat exchanger in the present application, the flow holes on the upper and lower adjacent heat exchange plates are staggered. Such a design is conducive to making the flow path of the second fluid complicated. When the second fluid flows on the upper heat exchange plate, it flows to the lower heat exchange plate through a group of flow holes set in this layer. The second fluid first flows in the area where the convex portion of the lower heat exchange plate is provided, and then flows to the area where the flow holes are provided and flows down to the lower layer, repeating the above flow path. The flow path of the second fluid between the adjacent pair of heat exchange plates is S-shaped, which not only increases the turbulence degree of the second fluid, but also significantly enhances the heat transfer effect of the second fluid in the turbulent state, and also improves the heat exchange efficiency, so that heat is transferred faster between fluids.

[0011] Furthermore, in a novel heat exchanger of the present application, a limiting portion is provided on a side of the upper end cover near the cylinder, the limiting portion extends into the cavity, the limiting portion abuts against the inner wall of the cavity in the radial direction of the cavity, a first notch is provided on a side of the limiting portion near the inner wall of the cavity, and the first notch is provided along the extension direction of the limiting portion. As a preferred embodiment of the present application, in a novel heat exchanger of the present application, when the upper end cover is provided on the cylinder, the limiting portion is used to limit the upper end cover in the radial direction of the cylinder to prevent the upper end cover from moving off the cylinder during use; the first notch is designed to facilitate the assembly and installation of the upper end cover and the cylinder.

[0012] Furthermore, in a novel heat exchanger of the present application, a sleeve portion corresponding to the outer diameter of the second fluid drainage tube is provided at the place where the second fluid connecting pipe is connected to the second fluid drainage tube, the sleeve portion is provided on the side of the upper end cover near the cavity, the sleeve portion is provided on the side of the second fluid drainage tube near the second fluid drainage tube, and the second missing portion is arranged along the circumference of the second fluid drainage tube. As a preferred embodiment of the present application, in a novel heat exchanger of the present application, when the upper end cover is provided on the cylinder, the sleeve portion is sleeved on one end of the second fluid drainage tube near the upper end cover, and the second fluid drainage tube and the sleeve portion are in radial contact with each other in the second fluid drainage tube; the second missing portion is designed to facilitate the sleeve connection between the second fluid connecting pipe and the second fluid drainage tube.

[0013] Furthermore, in the novel heat exchanger of the present application, a pair of the first fluid connecting pipe and the second fluid connecting pipe are provided with a connecting portion at one end away from the cylinder, and the connecting portion is used for external piping. As a preferred embodiment of the present application, in the novel heat exchanger of the present application, the connecting portion is used for externally connecting a pipeline, so that the heat exchanger is reliably connected to the pipeline.

[0014] Furthermore, a novel heat exchanger in the present application further includes: a heat preservation layer, a receiving cavity is provided on the side wall of the cylinder, the receiving cavity is closed along the circumference of the cylinder, and the receiving cavity is used to receive the heat preservation layer. As a preferred embodiment of the present application, a novel heat exchanger in the present application, the heat preservation layer is used to ensure that the first fluid and the second fluid in the heat exchanger basically do not exchange heat with the external environment during the heat exchange process, thereby further improving the heat exchange performance and the heat exchange efficiency.

[0015] It can be seen from the above technical solution that the present invention has the following beneficial effects: The present invention provides a novel heat exchanger, which has a first fluid tube and a group of heat exchange plates arranged in a cavity. During the heat exchange process, the first fluid flows continuously in the cylinder, and the second fluid flows continuously between the group of heat exchange plates. The group of heat exchange plates are sleeved on the first fluid tube at intervals to achieve heat exchange between the first fluid and the second fluid. A spiral flow channel is provided in the first fluid tube, so that the flow time of the first fluid in the first fluid tube is prolonged, thereby further improving the heat transfer efficiency. In addition, the heat exchanger has a simple structural design, and the manufacturing cost is reduced accordingly, and the volume is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a three-dimensional structure of a novel heat exchanger in an embodiment of the present application; Figure 2 This is a schematic diagram of the three-dimensional structure of a middle cylinder of a novel heat exchanger in an embodiment of the present application; Figure 3 A plan view of a novel heat exchanger in an embodiment of the present application; Figure 4 for Figure 3 Middle AA section plan; Figure 5 for Figure 3 Middle BB section plan; Figure 6 for Figure 5 A partial enlarged view of the area A in the middle circle; Figure 7 for Figure 4 A partial enlarged view of the area in the middle circle B.

[0017] In the figure: 1-cylinder; 10-cavity; 11-accommodating chamber; 2-upper end cover; 21-limiting part; 210-first missing part; 3-first fluid pipe; 30-first fluid connecting pipe; 31-spiral flow channel; 32-vertical pipe; 33-arc pipe; 4-heat exchange plate; 40-flow hole; 41-convex part; 5-second fluid connecting pipe; 6-second fluid drainage pipe; 7-fitting part; 70-second missing part; 8-connecting part; 9-insulation layer. DETAILED DESCRIPTION

[0018] like Figure 1 , 2 As shown in Figures 3, 4 and 5, a novel heat exchanger comprises: a cylinder 1, wherein a cavity 10 with an upper end opening is provided in the cylinder 1; an upper end cover 2, wherein the upper end cover 2 is covered on the cylinder 1; a first fluid pipe 3, wherein the first fluid pipe 3 is provided in the cavity 10, wherein the first fluid pipe 3 comprises a pair of first fluid connecting pipes 30, wherein the pair of the first fluid connecting pipes 30 extend out of the outside of the cylinder 1; a group of heat exchange plates 4, wherein a group of the heat exchange plates 4 are arranged in the cavity 10 axially at intervals along the cylinder 1, wherein a group of the heat exchange plates 4 are sleeved on the first fluid pipe 3, wherein a group of flow holes 40 are provided on the heat exchange plates 4, wherein a group of the flow holes 40 are arranged at intervals on the heat exchange plates 4; a pair of second fluid connecting pipes 5, wherein a pair of the second fluid connecting pipes 5 are arranged at intervals on the upper end cover 2, wherein the pair of the second fluid connecting pipes 5 are communicated with the cavity 10; a second fluid drainage pipe 6, wherein the second fluid drainage pipe 6 is passed through a group of heat exchange plates 4, wherein the second fluid drainage pipe 6 is axially communicated with the second fluid connecting pipe 5.

[0019] Based on the above structure, the principle of the novel heat exchanger is as follows: the novel heat exchanger of the present application is used to achieve heat transfer between a first fluid and a second fluid at different temperatures. The first fluid and the second fluid at different temperatures are respectively injected through the corresponding first fluid connecting pipe 30 and the second fluid connecting pipe 5, the first fluid enters the first fluid pipe 3, the second fluid enters the cavity 10 through the second fluid connecting pipe 5 arranged on the upper end cover 2, and the second fluid falls from the uppermost heat exchange plate 4 through a group of flow holes 40 in sequence. Since a group of heat exchange plates 4 are sleeved on the first fluid pipe 3 and there is a temperature difference between the first fluid and the second fluid, the temperature of the first fluid will be transferred to a group of heat exchange plates 4 through the first fluid pipe 3. In this process, the second fluid falls from the top to the bottom of a group of heat exchange plates 4 in sequence. Due to the existence of the temperature difference, the two realize heat exchange; the second fluid is discharged from the cylinder 1 through the second fluid drainage pipe 6 arranged in the cavity 10 in cooperation with the second fluid connecting pipe 5. The cylinder 1 is cylindrical, and a group of heat exchange plates 4 is 8 in number. The heat exchange plates 4 radially extend to the inner wall of the cavity 10 . A pair of first fluid connecting pipes 30 are installed at intervals on the outer bottom of the cylinder 1 .

[0020] In this embodiment, the first fluid pipe 3 is U-shaped, and the first fluid pipe 3 includes: a pair of vertical pipes 32 and an arc-shaped pipe 33. The arc-shaped pipe 33 and the pair of vertical pipes 32 are both arranged in the cavity 10. The two ends of the arc-shaped pipe 33 are respectively connected with the pair of vertical pipes 32. The pair of vertical pipes 32 are both passed through a group of heat exchange plates 4. The ends of the pair of vertical pipes 32 away from the arc-shaped pipe 33 are respectively connected with a pair of first fluid connecting pipes 30. The first fluid pipe 3 is U-shaped. The arc-shaped pipe 33 can effectively buffer the impact force generated by the pressure change of the first fluid, thereby reducing the occurrence of water hammer phenomenon; at the same time, it can make the first fluid form a complex flow path in the first fluid pipe 3, increase the disturbance degree of the first fluid, and thus improve the heat exchange efficiency; the design of the U-shaped structure reduces the length and number of elbows of the first fluid pipe 3, thereby saving materials and installation space, and reducing manufacturing costs. The first fluid pipe 3 adopts a U-shaped pipe.

[0021] In this embodiment, a pair of vertical pipes 32 are each provided with a spiral flow channel 31, and the spiral flow channel 31 extends in a continuous spiral shape along the extension direction of the vertical pipe 32, and the spiral flow channel 31 connects the first fluid connecting pipe 30 and the arc pipe 33. The design of the spiral flow channel 31 is conducive to increasing the disturbance of the first fluid. The spiral flow channel 31 causes the first fluid to rotate during the flow process, forming a complex flow field structure. This rotational motion continuously mixes and stirs the various parts of the first fluid, destroys the laminar boundary layer, and makes the temperature distribution inside the first fluid more uniform, thereby greatly enhancing the heat transfer and mass transfer effects; and prolonging the contact time. When the first fluid flows along the spiral flow channel 31, compared with straight-line flow, its travel in the vertical pipe 32 is longer, and the contact time with the wall of the vertical pipe 32 is increased, which provides more sufficient time for heat transfer and further improves the efficiency of heat transfer.

[0022] In this embodiment, the heat exchange plate 4 is also provided with a group of protrusions 41 corresponding to a group of flow holes 40. A group of protrusions 41 are arranged at intervals on the heat exchange plate 4, and a group of protrusions 41 and a group of flow holes 40 are arranged at intervals along the radial direction of the cylinder 1. The flow holes 40 are used to guide the second fluid from the upper heat exchange plate 4 to the lower heat exchange plate 4; the protrusions 41 are designed to: when the second fluid flows through a group of protrusions 41, the protrusions 41 produce a turbulent effect on the second fluid, thereby increasing the flow time of the second fluid on the heat exchange plate 4, enhancing the heat exchange effect, and improving the heat exchange efficiency. A group of flow holes 40 and a group of 41 are symmetrically arranged at intervals along the radial direction of the cylinder 1.

[0023] In this embodiment, the flow holes 40 on the pair of adjacent heat exchange plates 4 are arranged in a staggered manner. The flow holes 40 on the adjacent heat exchange plates 4 are arranged in a staggered manner. Such a design is conducive to making the flow path of the second fluid complicated. When the second fluid flows in the upper heat exchange plate 4, it flows to the lower heat exchange plate 4 through a group of flow holes 40 arranged in this layer. The second fluid first flows in the area where the convex portion 41 is provided on the lower heat exchange plate 4, and then flows to the area where the flow holes 40 are provided and flows down to the lower layer, repeating the above flow path. The flow path of the second fluid between the adjacent pair of heat exchange plates 4 is S-shaped, which not only increases the turbulence of the second fluid, but also significantly enhances the heat transfer effect of the second fluid in the turbulent state, and also improves the heat exchange efficiency, so that heat is transferred faster between fluids. A group of flow holes 40 are arranged at intervals along the radial direction of the cylinder 1, and correspondingly, a group of convex portions 41 are also arranged at intervals along the radial direction of the cylinder 1; a group of flow holes 40 and a group of convex portions 41 on the upper and lower adjacent heat exchange plates 4 correspond to each other in the axial direction of the cylinder 1.

[0024] like Figure 6 As shown, in this embodiment, a limiting portion 21 is provided on the side of the upper end cover 2 near the cylinder 1, and the limiting portion 21 extends into the cavity 10. The limiting portion 21 abuts against the inner wall of the cavity 10 in the radial direction of the cavity 10. A first notch 210 is provided on the side of the limiting portion 21 near the inner wall of the cavity 10, and the first notch 210 is arranged along the extension direction of the limiting portion 21. When the upper end cover 2 is covered on the cylinder 1, the limiting portion 21 is used to limit the upper end cover 2 in the radial direction of the cylinder 1 to prevent the upper end cover 2 from moving off the cylinder 1 during use; the first notch 210 is designed to facilitate the assembly and installation of the upper end cover 2 and the cylinder 1. The limiting portion 21 is closed and arranged along the circumference of the cylinder 1, and correspondingly, the first notch 210 is also arranged along the circumference of the cylinder 1.

[0025] like Figure 7 As shown, in this embodiment, the second fluid connecting pipe 5 is provided with a sleeve portion 7 corresponding to the outer diameter of the second fluid drainage pipe 6 at the place where the second fluid connecting pipe 5 is connected to the second fluid drainage pipe 6. The sleeve portion 7 is provided on the side of the upper end cover 2 near the cavity 10. The sleeve portion 7 is provided with a second notch 70 on the side of the second fluid drainage pipe 6 near the second fluid drainage pipe 6. The second notch 70 is arranged along the circumference of the second fluid drainage pipe 6. When the upper end cover 2 is covered on the cylinder 1, the sleeve portion 7 is sleeved on the end of the second fluid drainage pipe 6 near the upper end cover 2, and the second fluid drainage pipe 6 and the sleeve portion 7 are in contact with each other in the radial direction of the second fluid drainage pipe 6; the second notch 70 is designed to facilitate the sleeve connection between the second fluid connecting pipe 5 and the second fluid drainage pipe 6.

[0026] In this embodiment, a pair of the first fluid connecting pipe 30 and the second fluid connecting pipe 5 are provided with a connecting portion 8 at one end away from the cylinder 1, and the connecting portion 8 is used for external piping. The connecting portion 8 is used for externally connecting the pipeline so that the heat exchanger and the pipeline are reliably connected. The connecting portion 8 adopts a flange and is welded and connected with the corresponding first fluid connecting pipe 30 and the second fluid connecting pipe 5.

[0027] In this embodiment, it also includes: a heat-insulating layer 9, a receiving cavity 11 is provided on the side wall of the cylinder 1, and the receiving cavity 11 is closed along the circumference of the cylinder 1, and the receiving cavity 11 is used to receive the heat-insulating layer 9. The heat-insulating layer 9 is used to ensure that the first fluid and the second fluid in the heat exchanger basically do not exchange heat with the external environment during the heat exchange process, thereby further improving the heat exchange performance and the heat exchange efficiency. The heat-insulating layer 9 uses heat-insulating cotton.

[0028] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A new type of heat exchanger, characterized in that: include: A cylinder (1), wherein a cavity (10) with an upper end opening is provided in the cylinder (1); An upper end cover (2), the upper end cover (2) being arranged on the cylinder body (1); A first fluid pipe (3), the first fluid pipe (3) being arranged in the cavity (10), the first fluid pipe (3) comprising a pair of first fluid connecting pipes (30), the pair of first fluid connecting pipes (30) extending out of the outer side of the cylinder (1); A group of heat exchange plates (4), wherein the group of heat exchange plates (4) are arranged in the cavity (10) at intervals along the axial direction of the cylinder (1), the group of heat exchange plates (4) are sleeved on the first fluid pipe (3), the heat exchange plates (4) are provided with a group of flow holes (40), and the group of flow holes (40) are arranged at intervals on the heat exchange plates (4); a pair of second fluid connecting pipes (5), the pair of second fluid connecting pipes (5) being arranged on the upper end cover (2) at intervals, and the pair of second fluid connecting pipes (5) being connected to the containing cavity (10); A second fluid drainage pipe (6), wherein the second fluid drainage pipe (6) is passed through a group of heat exchange plates (4), and the second fluid drainage pipe (6) is axially connected to a second fluid connecting pipe (5).

2. A novel heat exchanger according to claim 1, characterized in that: The first fluid pipe (3) is U-shaped, and comprises: a pair of vertical pipes (32) and an arc-shaped pipe (33); the arc-shaped pipe (33) and the pair of vertical pipes (32) are both arranged in the cavity (10); both ends of the arc-shaped pipe (33) are respectively connected to the pair of vertical pipes (32); the pair of vertical pipes (32) are both passed through a group of heat exchange plates (4); and one end of the pair of vertical pipes (32) away from the arc-shaped pipe (33) is respectively connected to a pair of first fluid connecting pipes (30).

3. A novel heat exchanger according to claim 2, characterized in that: A spiral flow channel (31) is provided in each of the pair of vertical pipes (32), the spiral flow channel (31) extending in a continuous spiral shape along the extension direction of the vertical pipe (32), and the spiral flow channel (31) connects the first fluid connecting pipe (30) and the arc-shaped pipe (33).

4. A novel heat exchanger according to claim 1, characterized in that: The heat exchange plate (4) is also provided with a group of protrusions (41) corresponding to the group of flow holes (40); the group of protrusions (41) are arranged at intervals on the heat exchange plate (4); and the group of protrusions (41) and the group of flow holes (40) are arranged at intervals along the radial direction of the cylinder (1).

5. A novel heat exchanger according to claim 4, characterized in that: The flow holes (40) on a pair of upper and lower adjacent heat exchange plates (4) are arranged in a staggered manner.

6. A novel heat exchanger according to claim 1, characterized in that: A limiting portion (21) is provided on a side of the upper end cover (2) close to the cylinder body (1), the limiting portion (21) extends into the cavity (10), the limiting portion (21) abuts against an inner wall of the cavity (10) in a radial direction of the cavity (10), a first notch (210) is provided on a side of the limiting portion (21) close to the inner wall of the cavity (10), and the first notch (210) is arranged along an extension direction of the limiting portion (21).

7. A novel heat exchanger according to claim 1, characterized in that: A sleeve-fitting portion (7) corresponding to the outer diameter of the second fluid drainage tube (6) is provided at the place where the second fluid connecting pipe (5) is connected to the second fluid drainage tube (6); the sleeve-fitting portion (7) is arranged on a side of the upper end cover (2) close to the cavity (10); a second notch (70) is provided on a side of the sleeve-fitting portion (7) close to the second fluid drainage tube (6); and the second notch (70) is arranged along the circumference of the second fluid drainage tube (6).

8. A novel heat exchanger according to claim 1, characterized in that: A pair of the first fluid connecting pipe (30) and the second fluid connecting pipe (5) are both provided with a connecting portion (8) at one end away from the cylinder (1), and the connecting portion (8) is used for external piping.

9. A novel heat exchanger according to claim 1, characterized in that: Also includes: A heat-insulating layer (9), wherein a receiving cavity (11) is provided on the side wall of the cylinder (1), the receiving cavity (11) being arranged in a closed manner along the circumference of the cylinder (1), and the receiving cavity (11) is used to receive the heat-insulating layer (9).

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