Spiral baffles special-shaped tube bundle shell and tube heat exchanger

Abstract

The present invention relates to a shell and tube heat exchanger with spiral baffles and special-shaped tube bundles, belonging to the technical field of shell and tube heat exchangers. It includes a tube pass portion at one end of the heat exchange portion, the heat exchange portion includes a baffle assembly inside the heat exchange shell, the baffle assembly includes a central tube, support rods I and II are respectively provided at both ends of the central tube, a spiral baffle arranged in a spiral pattern is provided on the outer surface of the central tube, and a U-shaped heat-conducting pipe is inserted on the spiral baffle; the connecting mechanism includes a mounting plate and a connecting assembly II adapted to the connecting assembly I, the heat-conducting pipe connects the injection layer and the discharge layer, the support rod I is fixedly arranged on the inner wall of the heat exchange shell, and the support rod II is fixedly arranged on the mounting plate. The present invention provides a shell and tube heat exchanger with spiral baffles and special-shaped tube bundles, which improves the internal structural layout, increases the heat exchange area of ​​the heat-conducting pipe, improves the heat exchange efficiency, and adds corresponding connecting assemblies, so that the heat exchanger as a whole is easy to assemble, disassemble, repair, maintain and clean, and further improves the work efficiency.

Description

Technical Field

[0001] The invention relates to a shell and tube heat exchanger with spiral baffles and special-shaped tube bundles, belonging to the technical field of shell and tube heat exchangers. Background Art

[0002] Shell and tube heat exchanger, also known as tube-in-shell heat exchanger, is a partition-type heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. The baffle is one of the components of the tube heat exchanger. The baffle not only provides support for the heat exchange part, but also allows the shell-side medium to flow according to a specific channel to improve the heat transfer performance. Spiral baffles are currently more commonly used baffles. Spiral baffles can be divided into continuous spiral baffles and discontinuous spiral baffles (also called lapped spiral baffles). The difference is that continuous spiral baffles are standard spiral surfaces, while discontinuous spiral baffles are generally composed of several 1 / 4 fan-shaped flat plates instead of curved surfaces connected alternately to form an approximate spiral plane that is at a certain angle to the main axis. The following technical defects exist in the current field:

[0003] 1. In order to facilitate the placement of spiral baffles, a central tube is usually set in the middle of the continuous spiral baffles, and the two ends of the central tube are fixed on the inner wall of the heat exchanger. However, due to the setting of the central tube, a part of the space inside the heat exchanger tube is occupied, which reduces the heat exchange area of ​​the shell side. In addition, the space occupied by the central tube reduces the space available for the tube side, which is not conducive to the layout of the tube side.

[0004] 2. Existing shell and tube heat exchangers usually consist of two parts, which are fixedly connected by multiple bolts during installation, which is troublesome to operate. When disassembly and maintenance are required, multiple bolts need to be removed, which reduces work efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a spiral baffle shaped tube bundle shell and tube heat exchanger, which improves the internal structural layout, increases the heat exchange area of ​​the heat transfer pipe, improves the heat exchange efficiency, and adds corresponding connecting components, so that the heat exchanger as a whole is easy to assemble, disassemble, repair, maintain and clean, thereby further improving work efficiency.

[0006] The spiral baffle special-shaped tube bundle shell and tube heat exchanger of the present invention comprises a tube pass portion at one end of a heat exchange portion, the heat exchange portion comprises a baffle assembly arranged inside a heat exchange shell, the baffle assembly comprises a central tube, support rods I and II are respectively arranged at both ends of the central tube, a spiral baffle arranged in a spiral pattern is arranged on the outer surface of the central tube, a U-shaped heat conducting pipe is inserted on the spiral baffle, the heat conducting pipe is divided into a type I heat conducting pipe and a type II heat conducting pipe, the type II heat conducting pipe is arranged in a U-shaped accommodation space of the type I heat conducting pipe, one end of the type I heat conducting pipe and the type II heat conducting pipe is arranged in the central tube, and both ends of the heat exchange shell are provided with a U-shaped heat conducting pipe. A shell-side inlet and a shell-side outlet connected to the outside are respectively provided, and a connecting component I is fixedly provided on the inner wall of one end of the heat exchange shell; the tube-side part includes an injection layer and a discharge layer provided inside the tube-side shell, the injection layer is sleeved on the outer ring of the discharge layer, the injection layer is connected to the outside through the tube-side inlet, and the discharge layer is connected to the outside through the tube-side outlet. A connecting mechanism is fixedly provided at one end of the tube-side shell, the connecting mechanism includes a mounting plate and a connecting component II adapted to the connecting component I, the heat-conducting pipe connects the injection layer and the discharge layer, the support rod I is fixedly arranged on the inner wall of the heat exchange shell, and the support rod II is fixedly arranged on the mounting plate.

[0007] Working process or working principle:

[0008] The shell-side medium enters the heat exchange shell from the shell-side inlet, and after being deflected by the spiral baffle, the shell-side medium swirls inside, which accelerates the heat exchange efficiency, and finally the shell-side medium is discharged from the shell from the shell-side discharge port; the tube-side medium enters the injection layer from the tube-side inlet, and the tube-side medium flows into the discharge layer through type I heat pipes and type II heat pipes respectively, and finally is discharged from the discharge layer from the tube-side discharge port.

[0009] Furthermore, the connection assembly I includes a sealing groove arranged on the side of one end of the fixing ring, an extrusion ring with a tapered hole shape is arranged at one end of the fixing ring, and the fixing ring and the outer ring of the extrusion ring are fixed on the inner wall of the heat exchange shell.

[0010] Furthermore, an internal thread section is provided on the inner wall of the heat exchange shell at one end of the extrusion ring, and the connection component II includes a threaded ring fixed to one end of the mounting plate, and the threaded ring is threadedly connected to the internal thread section.

[0011] Furthermore, a sealing ring matching the sealing groove is provided on the end surface of the threaded ring.

[0012] Furthermore, the connection mechanism includes a mounting plate and a connection component II. The mounting plate is fixed to one end of the tube-side shell, and the connection component II is fixedly arranged on one end of the mounting plate away from the tube-side shell.

[0013] Furthermore, the spiral baffle is provided with a through hole adapted to the heat conducting pipe.

[0014] Furthermore, an injection hole and a discharge hole are respectively provided on the mounting plate, and the injection hole and the discharge hole are respectively provided at two ends of the heat conducting pipe.

[0015] Furthermore, the number of type I heat pipes is smaller than the number of type II heat pipes.

[0016] Furthermore, the end with the larger inner diameter of the extrusion ring is arranged toward the sealing component II.

[0017] Furthermore, the inner hole of the central tube is coaxially arranged with the inner hole of the exclusion layer.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the process of using the present invention, by providing a tube-side portion and a baffle assembly, based on the structure of the existing heat exchanger, the structure of the tube-side in the heat exchanger is modified, so that the tube-side portion is divided into an injection layer and a discharge layer by an inner tube, the injection layer is located outside the discharge layer, an injection port for connecting the heat exchange portion with the injection layer is provided on the mounting plate of the tube-side portion, and a discharge port for connecting the heat exchange portion with the discharge layer is provided on the mounting plate, the tube-side heat conduction pipe is arranged in a U shape, one end is connected to the injection hole, and the other end is connected to the discharge hole, based on the structure of the existing central pipe, at both ends of the central pipe Support rods I and II are provided so that both ends of the central tube are connected with the heat exchange part, the spiral baffle is sleeved on the central tube, and the U-shaped heat-conducting tube is clamped on the central tube so that half of the U-shaped heat-conducting tube is located between the central tube and the heat exchange part, and the other half of the heat-conducting tube is located inside the central tube. Therefore, when fluid heat exchange is performed, part of the fluid can flow through the inside of the central tube, and exchange heat with the heat-conducting tube inside the central tube when flowing. By clamping the U-shaped heat-conducting tube with the central tube, the space occupied by the central tube is reduced and the heat exchange area is increased while facilitating the layout and placement of the heat-conducting tube.

[0020] 2. During use of the present invention, a connecting component I and a connecting component II are provided. The connecting component I is fixedly provided on the inner wall of one end of the heat exchange part, and the connecting component II is fixedly provided on the mounting plate of the pipe-side part. When the pipe-side part is connected to the heat exchange part, the threaded ring on the connecting component II is connected to the internal threaded section on the connecting component I. The pipe-side part is continuously rotated so that the threaded ring continues to move in the heat exchange part until the sealing ring on the threaded ring is engaged in the sealing groove on the fixed ring, thereby sealing the connection between the connecting component I and the connecting component II. When the threaded ring is twisted, the outer edge of the threaded ring contacts the extrusion ring, which is made of rubber. When the threaded ring is continuously twisted, the extrusion ring is tightly squeezed and clamped between the threaded ring and the inner wall of the heat exchange part, thereby further sealing the connection, thereby improving the sealing of the connection. Moreover, the heat exchange part and the pipe-side part are easy to disassemble and assemble through the threaded connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural diagrams of Embodiment 1 of the present invention;

[0022] Figure 2 This is the second structural diagram of Embodiment 1 of the present invention;

[0023] Figure 3 This is the third structural diagram of Embodiment 1 of the present invention;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is a schematic diagram of the heat pipe layout structure of the present invention;

[0026] In the figure: 1. heat exchange part; 11. heat exchange shell; 12. shell side inlet; 13. shell side outlet; 14. connection component I; 141. fixing ring; 142. sealing groove; 143. extrusion ring; 144. internal thread section; 2. tube side part; 21. tube side shell; 211. tube side inlet; 212. tube side outlet; 213. inner layer cylinder; 214. injection layer; 215. discharge layer; 22. connection mechanism; 221. mounting plate; 2211. injection hole; 2212. discharge hole; 222. connection component II; 2221. threaded ring; 2222. sealing ring; 3. baffle assembly; 31. center tube; 311. support rod I; 312. support rod II; 32. spiral baffle; 321. through hole; 4. heat pipe; 41. type I heat pipe; 42. type II heat pipe. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1 to Figure 5As shown, the spiral baffle special-shaped tube bundle shell and tube heat exchanger of the present invention comprises a heat exchange portion 1 having a tube-side portion 2 at one end, the heat exchange portion 1 comprising a heat exchange shell 11 having a baffle assembly 3 inside, the baffle assembly 3 comprising a central tube 31, support rods I 311 and support rods II 312 respectively arranged at both ends of the central tube 31, a spiral baffle 32 arranged in a spiral pattern is arranged on the outer surface of the central tube 31, a U-shaped heat conducting pipe 4 is inserted through the spiral baffle 32, the heat conducting pipe 4 is divided into a type I heat conducting pipe 41 and a type II heat conducting pipe 42, the type II heat conducting pipe 42 is arranged in the U-shaped accommodation space of the type I heat conducting pipe 41, one end of the type I heat conducting pipe 41 and the type II heat conducting pipe 42 is arranged in the central tube 31, and a shell-side inlet 12 and a shell-side outlet 13 communicating with the outside are respectively arranged at both ends of the heat exchange shell 11 A connection component I14 is fixedly provided on the inner wall of one end of the heat exchange shell 11; the tube-side portion 2 includes an injection layer 214 and a discharge layer 215 provided inside the tube-side shell 21, the injection layer 214 is sleeved on the outer ring of the discharge layer 215, the injection layer 214 is connected to the outside through the tube-side inlet 211, and the discharge layer 215 is connected to the outside through the tube-side discharge port 212. A connection mechanism 22 is fixedly provided at one end of the tube-side shell 21, and the connection mechanism 22 includes a mounting plate 221 and a connection component II222 adapted to the connection component I14. The heat-conducting pipe 4 connects the injection layer 214 and the discharge layer 215. The support rod I311 is fixedly provided on the inner wall of the heat exchange shell 11, and the support rod II312 is fixedly provided on the mounting plate 221, or a through hole is provided on the outer surface and the inside of the central tube 31 to accelerate heat transfer.

[0029] The connection assembly I14 includes a sealing groove 142 arranged on the side of one end of a fixing ring 141 , and an extrusion ring 143 in the shape of a cone hole is arranged at one end of the fixing ring 141 . The outer rings of the fixing ring 141 and the extrusion ring 143 are fixed on the inner wall of the heat exchange shell 11 .

[0030] like Figure 2 to Figure 4As shown, specifically, the connection component I14 includes a fixing ring 141, a sealing groove 142 is opened on the fixing ring 141, an extrusion ring 143 is fixedly provided on the side wall of the fixing ring 141, an internal thread section 144 is fixedly provided on one side of the connection component I14, and the internal thread section 144 is fixed on the inner wall of the heat exchange shell 11; a tube-side inlet 211 is connected through the top surface of the tube-side shell 21, a tube-side discharge port 212 is connected through the side wall of the tube-side shell 21, an inner layer cylinder 213 is fixedly provided on the inner side of the tube-side shell 21, an injection layer 214 is provided on the outer side of the inner layer cylinder 213, a discharge layer 215 is provided on the inner side of the inner layer cylinder 213, and the tube-side inlet 211 is connected through the top surface of the tube-side shell 21, and a tube-side discharge port 212 is connected through the side wall of the tube-side shell 21, an inner layer cylinder 213 is fixedly provided on the inner side of the tube-side shell 21, an injection layer 214 is provided on the outer side of the inner layer cylinder 213, and a discharge layer 215 is provided on the inner side of the inner layer cylinder 213. 11 is connected to the injection layer 214, and the pipe discharge port 212 is connected to the discharge layer 215; the connection mechanism 22 includes a mounting plate 221, one end of the inner layer tube 213 is fixed to the mounting plate 221, and a connecting component II 222 is fixedly provided on the side wall of the mounting plate 221, and the connecting component II 222 is threadedly connected to the connecting component I 14, and one end of the support rod II 312 is fixedly connected to the mounting plate 221; an injection hole 2211 is opened on the mounting plate 221, and the injection hole 2211 is connected to the injection layer 214, and a discharge hole 2212 is opened on the mounting plate 221, and the discharge hole 2212 is connected to the discharge layer 215; the connecting component II 222 It includes a threaded ring 2221, which is fixed on the mounting plate 221, and the threaded ring 2221 is threadedly connected with the internal thread segment 144. A sealing ring 2222 is fixedly arranged on the side wall of the threaded ring 2221. This scheme is based on a general shell and tube heat exchanger, and a connecting component I14 is fixedly arranged on the inner wall of one end of the heat exchange part 1, and a connecting component II222 is fixedly arranged on the mounting plate 221 of the pipe-pass part 2. When the pipe-pass part 2 is connected to the heat exchange part 1, the threaded ring 2221 on the connecting component II222 is connected to the internal thread segment 144 on the connecting component I14, and the pipe-pass part 2 is continuously rotated so that the threaded ring 2221 continues to move in the heat exchange part 1. Until the sealing ring 2222 on the threaded ring 2221 is engaged in the sealing groove 142 on the fixing ring 141, the connection between the connecting component I14 and the connecting component II222 is sealed. When the threaded ring 2221 is turned, the outer edge of the threaded ring 2221 contacts the extrusion ring 143. The extrusion ring 143 is made of rubber. When the threaded ring 2221 is continuously turned, the extrusion ring 143 is tightly squeezed and clamped between the threaded ring 2221 and the inner wall of the heat exchange part 1, thereby further sealing the connection, thereby improving the sealing of the connection, and through the threaded connection, the heat exchange part 1 and the pipe part 2 are easy to disassemble and assemble, thereby improving the convenience during maintenance.

[0031] An internal thread section 144 is provided on the inner wall of the heat exchange shell 11 at one end of the extrusion ring 143 . The connecting component II 222 includes a threaded ring 2221 fixed to one end of the mounting plate 221 . The threaded ring 2221 is threadedly connected to the internal thread section 144 .

[0032] The end surface of the threaded ring 2221 is provided with a sealing ring 2222 matched with the sealing groove 142 .

[0033] The connection mechanism 22 includes a mounting plate 221 and a connection assembly II 222. The mounting plate 221 is fixed to one end of the tube shell 21, and the connection assembly II 222 is fixedly arranged on the mounting plate 221 at one end away from the tube shell 21. The spiral baffle 32 is provided with a through hole 321 adapted to the heat-conducting pipe 4. The mounting plate 221 is respectively provided with an injection hole 2211 and a discharge hole 2212, and the injection hole 2211 and the discharge hole 2212 are respectively arranged at both ends of the heat-conducting pipe 4. The number of type I heat-conducting pipes 41 is less than the number of type II heat-conducting pipes 42. The end with a larger inner diameter of the extrusion ring 143 is arranged toward the sealing assembly II. The inner hole of the center tube 31 is arranged coaxially with the inner hole of the exclusion layer.

[0034] like Figure 2 , Figure 3 and Figure 5As shown, specifically, the heat exchange part 1 includes a heat exchange shell 11, the top surface of the heat exchange shell 11 is provided with a shell-side inlet 12, the bottom surface of the heat exchange shell 11 is provided with a shell-side outlet 13, a connection component Ⅰ14 is fixedly provided on the inner wall of one end of the heat exchange part 1, and the connection component Ⅰ14 is threadedly connected to the tube-side part 2; the baffle component 3 includes a central tube 31, the outer wall of the central tube 31 is sleeved with a spiral baffle 32, and the heat conduction pipe 4 is engaged with the spiral baffle 32; the spiral baffle 32 is provided with a through hole 321, and the heat conduction pipe 4 is engaged with the spiral baffle 32. In the through hole 321; one end of the heat conducting tube 4 is connected to the injection hole 2211, and the other end of the heat conducting tube 4 is connected to the discharge hole 2212; this scheme is based on the general shell and tube heat exchanger in which the tube structure is injected from the top and discharged from the bottom, and the structure of the tube in the heat exchanger is modified so that the tube part 2 is divided into an injection layer 214 and a discharge layer 215 through the inner layer tube 213, and the injection layer 214 is located on the outside of the discharge layer 215. A hole is opened on the mounting plate 221 of the tube part 2 to connect the heat exchange part 1 with the injection layer 214. The injection hole 2211 connected to the heat exchange part 1 is provided on the mounting plate 221, and the discharge hole 2212 which connects the heat exchange part 1 with the discharge layer 215 is provided. The tube-side heat conduction pipe 4 is set to be U-shaped, with one end connected to the injection hole 2211 and the other end connected to the discharge hole 2212. Based on the structure of the existing central tube 31, support rods I 311 and support rods II 312 are provided at both ends of the central tube 31, so that both ends of the central tube 31 are connected to the heat exchange part 1 through and through. The spiral baffle 32 is sleeved on the central tube 31. The U-shaped heat-conducting tube 4 is engaged with the central tube 31, so that half of the U-shaped heat-conducting tube 4 is located between the central tube 31 and the heat exchange part 1, and the other half of the heat-conducting tube 4 is located inside the central tube 31. Therefore, when fluid heat exchange is performed, part of the fluid can flow through the inside of the central tube 31, and exchange heat with the heat-conducting tube 4 inside the central tube 31 when flowing. By engaging the U-shaped heat-conducting tube 4 with the central tube 31, the layout and placement of the heat-conducting tube 4 is facilitated, while the occupied space of the central tube 31 is reduced and the heat exchange area is increased.

[0035] Working process or working principle:

[0036] When the present invention is used, first, the support rod II 312 of the central tube 31 is fixed on the mounting plate 221, and then the spiral baffle plate 32 is sleeved on the mounting plate 221, and then the opening of the U-shaped heat-conducting pipe 4 is clamped from one end of the central tube 31 to the central tube 31, so that both ends of the heat-conducting pipe 4 pass through the spiral baffle plate 32, and then one end of the heat-conducting pipe 4 is clamped in the injection hole 2211 and connected with the injection layer 214, and the other end of the heat-conducting pipe 4 is clamped in the discharge hole 2212 and connected with the discharge layer 215, and then the pipe-pass part 2 is inserted into the heat exchange part 1 together with the baffle assembly 3 and the heat-conducting pipe 4, and the heat exchange part 1 and the pipe-pass part 2 are fixedly installed by the threaded connection between the threaded ring 2221 and the internal threaded section 144, so that the threaded ring 22 The sealing ring 2222 on 21 is engaged in the sealing groove 142, and the outer edge of the threaded ring 2221 is clamped with the extrusion ring 143 to increase the connection sealing, and the threaded connection is convenient for disassembly and assembly; when fluid heat exchange is performed, the heat exchange medium is injected into the injection layer 214 from the tube side inlet 211, and the heat exchange fluid is injected into the heat exchange part 1 from the shell side inlet 12. The heat exchange medium enters the heat transfer tube 4 from the injection hole 2211. The external heat exchange fluid can contact the heat transfer tube 4 for heat exchange regardless of whether it is on the inner side or the outer side of the central tube 31, avoiding the situation that the central tube 31 of a general heat exchanger occupies the heat exchange area. The heat exchange fluid flows out from the shell side discharge port 13, and the heat exchange medium flows into the discharge layer 215 from the heat transfer tube 4, and is then discharged from the tube side discharge port 212, thereby completing the heat exchange.

[0037] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A spiral baffle special-shaped tube bundle shell and tube heat exchanger, characterized in that: The invention comprises a heat exchange part (1) having a tube-pass part (2) at one end, the heat exchange part (1) comprising a heat exchange shell (11) and a baffle assembly (3) arranged inside the shell, the baffle assembly (3) comprising a central tube (31), the central tube (31) having support rods I (311) and support rods II (312) at both ends thereof, the outer surface of the central tube (31) having spiral baffles (32) arranged in a spiral pattern, the spiral baffles (32) having U-shaped heat conduction pipes (4) inserted therethrough, the heat conduction pipes (4) being divided into type I heat conduction pipes (41) and type II heat conduction pipes (42), the type II heat conduction pipes (42) being arranged in the U-shaped accommodation space of the type I heat conduction pipes (41), one end of the type I heat conduction pipes (41) and the type II heat conduction pipes (42) being arranged in the central tube (31), and the two ends of the heat exchange shell (11) having shell-pass inlet (12) and shell-pass outlet (13) communicating with the outside thereof. ), a connection component I (14) is fixedly provided on the inner wall of one end of the heat exchange shell (11); the tube-side portion (2) comprises a tube-side shell (21), an injection layer (214) and a discharge layer (215) are provided inside, the injection layer (214) is sleeved on the outer ring of the discharge layer (215), the injection layer (214) is connected to the outside through the tube-side inlet (211), and the discharge layer (215) is connected to the outside through the tube-side discharge port (212); a connection mechanism (22) is fixedly provided on one end of the tube-side shell (21), the connection mechanism (22) comprises a mounting plate (221) and a connection component II (222) adapted to the connection component I (14), the heat conduction pipe (4) is connected to the injection layer (214) and the discharge layer (215), the support rod I (311) is fixedly provided on the inner wall of the heat exchange shell (11), and the support rod II (312) is fixedly provided on the mounting plate (221); The connection assembly I (14) comprises a sealing groove (142) provided on the side surface of one end of a fixing ring (141); an extrusion ring (143) in the shape of a cone hole is provided on one end of the fixing ring (141); and the outer rings of the fixing ring (141) and the extrusion ring (143) are fixed on the inner wall of the heat exchange shell (11); An internal thread section (144) is provided on the inner wall of the heat exchange shell (11) at one end of the extrusion ring (143), and the connection assembly II (222) comprises a threaded ring (2221) fixed to one end of the mounting plate (221), and the threaded ring (2221) is threadedly connected to the internal thread section (144); The end surface of the threaded ring (2221) is provided with a sealing ring (2222) matched with the sealing groove (142); The connecting mechanism (22) comprises a mounting plate (221) and a connecting component II (222), wherein the mounting plate (221) is fixed to one end of the tube-side housing (21), and the connecting component II (222) is fixedly arranged on an end of the mounting plate (221) that is away from the tube-side housing (21); The end of the extrusion ring (143) with a larger inner diameter is arranged toward the connection assembly II (222).

2. The spiral baffle special-shaped tube bundle shell and tube heat exchanger according to claim 1, characterized in that: The spiral baffle plate (32) is provided with a through hole (321) adapted to the heat conducting pipe (4).

3. The spiral baffle special-shaped tube bundle shell and tube heat exchanger according to claim 2, characterized in that: An injection hole (2211) and an exhaust hole (2212) are respectively provided on the mounting plate (221), and the injection hole (2211) and the exhaust hole (2212) are respectively provided at two ends of the heat conduction pipe (4).

4. The spiral baffle special-shaped tube bundle shell and tube heat exchanger according to claim 3, characterized in that: The number of type I heat conducting pipes (41) is smaller than the number of type II heat conducting pipes (42).

5. The spiral baffle special-shaped tube bundle shell and tube heat exchanger according to claim 1, characterized in that: The inner hole of the central tube (31) is coaxially arranged with the inner hole of the discharge layer.

Images