A shell-and-coil partition-coupled heat exchanger and a gradient tube arrangement method thereof

Abstract

This invention belongs to the field of heat exchanger technology, specifically a shell-and-tube wound-tube zoned coupled heat exchanger and its gradient tube arrangement method. It includes a shell with end caps at both ends, and spiral heat exchange tubes installed inside the shell. Small blades are installed at the ends of the spiral heat exchange tubes. Steel wires are wound around the spiral heat exchange tubes and connected to a rotating ring. A central rod is installed inside the shell, located in the middle of each group of spiral heat exchange tubes. Both ends of the central rod are rotatably mounted on a tube sheet. A large blade is installed at one end of the central rod, located in the space enclosed by the end caps, tube sheet, and shell. An impeller, a centrifugal impeller, is installed on the central rod. This invention has a simple structure, with multiple groups of spiral heat exchange tubes arranged inside the shell around an impeller in the middle of the shell. Steel wires are used to clean the surface of the heat exchange tubes, promoting heat exchange and improving the heat exchange effect.

Description

Technical Field

[0001] This invention belongs to the field of heat exchanger technology, specifically a tube-winding tube partitioned coupled heat exchanger and its gradient tube arrangement method. Background Technology

[0002] The spiral threaded tube heat exchanger is a new type of high-efficiency and energy-saving heat exchange equipment. Its design completely breaks through the traditional shell-and-tube heat exchanger design concept. From material selection to structural form and external volume, it has undergone significant changes compared with the traditional shell-and-tube heat exchanger. Multiple technological innovations have enabled this heat exchanger to significantly surpass the traditional shell-and-tube heat exchanger in terms of appearance and performance. It has changed the characteristics of traditional heat exchangers, such as simple structure, large size, rough appearance and low efficiency. It is a replacement product for traditional heat exchangers.

[0003] A shell-and-tube heat exchanger includes a shell, tube sheets installed on both sides of the shell, and the shell is located outside the tube sheets and sealed by end caps. Inside the shell, tubes parallel to the shell axis are installed, and the two ends of the tubes are supported on the tube sheets. The two ends of the shell have tube-side inlet and shell-side outlet, as well as tube-side outlet and shell-side inlet.

[0004] However, in existing shell-and-tube heat exchangers, the tube-side distance and shell-side distance are equal. Since the axial length of the shell is limited by the size of the installation space, it cannot be too long, that is, the shell-side distance is relatively short. This directly leads to a short tube-side distance, short heat exchange time, and poor heat exchange effect in shell-and-tube heat exchangers. At the same time, after the heat exchanger has been used for a long time, dirt will form on the threaded tubes. If it is not cleaned and removed, the heat exchange efficiency of the heat exchanger will be reduced and cleaning will be inconvenient. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, multiple sets of spiral heat exchange tubes are arranged inside the tube shell around the impeller in the middle of the tube shell to promote heat exchange and improve the heat exchange effect. In addition, steel wire ropes are used to clean the dirt on the surface of the heat exchange tubes to avoid the dirt affecting the heat exchange effect and the inconvenience of cleaning. This invention proposes a tube-winding tube partitioned coupling heat exchanger and its gradient tube arrangement method.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a tube-winding tube partitioned coupled heat exchanger and its gradient tube arrangement method, including a tube shell, end caps installed at both ends of the tube shell, an air inlet pipe and an air outlet pipe respectively installed on the two end caps, tube sheets installed at both ends inside the tube shell, spiral heat exchange tubes installed between the tube sheets, and a liquid inlet pipe and a liquid outlet pipe respectively installed at both ends of the tube shell.

[0007] The end of the spiral heat exchange tube is provided with a straight tube section, and a rotating ring is rotatably installed on the straight tube section. Small blades are installed on the rotating ring, and the small blades rotate when impacted by cold water.

[0008] The spiral heat exchange tube is wound with steel wires in a spiral shape, and the two ends of the steel wires are respectively connected to the rotating rings at both ends of the spiral heat exchange tube.

[0009] A central rod is installed inside the tube shell. The central rod is located in the middle of each group of spiral heat exchange tubes. Both ends of the central rod are rotatably mounted on the tube sheet. A large blade is installed on one end of the central rod. The large blade is located in the space enclosed by the end cap, tube sheet, and tube shell.

[0010] An impeller is mounted on the central rod; the impeller is a centrifugal impeller.

[0011] Preferably, the surface of the steel wire is wrapped with a rubber layer, and the surface of the rubber layer is provided with protrusions, which are in contact with the surface of the spiral heat exchange tube.

[0012] Preferably, the protrusion is spiral-shaped, and the spiral shapes of the protrusion and the steel wire are in the same direction.

[0013] Preferably, a corrugated pipe section is installed in the middle of the straight pipe section, the end of the straight pipe section away from the spiral heat exchanger tube is installed on the tube sheet, and an elastic frame is installed on the end of the straight pipe section close to the spiral heat exchanger tube.

[0014] The elastic frame is located between the corrugated pipe section and the rotating ring, and the small blades are eccentrically installed on the straight pipe section.

[0015] Preferably, the inner wall of the tube shell is equipped with baffles, and multiple sets of baffles are provided. The baffles are spiral in shape, and the pitch of each set of baffles gradually increases along the direction of liquid flow inside the tube shell.

[0016] Preferably, the center rod has a hollow cavity inside, an intake port is provided at the end of the center rod near the large impeller, and an outlet port is provided on the center rod, with each outlet port corresponding to one of the impellers.

[0017] Preferably, the diameter of the hollow cavity at the end closest to the large impeller is larger than that at the other end.

[0018] A gradient tube arrangement method for a shell-and-tube wound-tube zoned coupled heat exchanger, the tube arrangement method being applicable to any of the shell-and-tube wound-tube zoned coupled heat exchangers described above, the tube arrangement method comprising the following steps:

[0019] S1: Multiple sets of spiral heat exchange tubes are evenly arranged around the center line of the tube shell; the spiral heat exchange tubes form a multi-layer concentric structure along the circumference of different radii;

[0020] S2: Arrange the spiral heat exchange tubes on circles with different radii in a staggered manner.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention discloses a tube-winding tube partitioned coupled heat exchanger and its gradient tube arrangement method. By setting up spiral heat exchange tubes, steel wires, a central rod and an impeller, the impeller is used to make the liquid in the tube shell flow from the middle to the inner wall, which promotes the flow of liquid in the tube shell and makes the liquid in a turbulent state, promotes heat exchange, and improves the heat exchange effect and efficiency. At the same time, the surface of the spiral heat exchange tube is cleaned to avoid the accumulation of dirt during long-term operation, which would affect the heat exchange efficiency.

[0023] 2. The tube-winding tube partitioned coupling heat exchanger and its gradient tube arrangement method described in this invention, by setting steel wires, rubber layers and protrusions, so that when the steel wires rotate around the spiral heat exchange tubes, they clean the dirt on the surface and stir the liquid near the surface, so that the liquid is in a turbulent state, further increasing the temperature difference of the liquid near the surface of the spiral heat exchange tubes and improving the heat exchange efficiency. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of the heat exchanger of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation of the central rod in the heat exchanger of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of one set of spiral heat exchange tubes in the heat exchanger of the present invention, wherein the steel wires are not shown;

[0028] Figure 4 This is a schematic diagram of the spiral heat exchange tube in the heat exchanger of the present invention;

[0029] Figure 5 This is a schematic diagram of the steel wire rope structure in the heat exchanger of the present invention;

[0030] Figure 6 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 7 This is a block diagram of the gradient tube arrangement method for heat exchangers according to the present invention;

[0032] In the diagram: 1. Shell 1, 11. End cap 12. Tube sheet 13. Elastic frame 13. Inlet pipe 14. Outlet pipe 15. Inlet pipe 16. Outlet pipe 17. Baffle 18. Spiral heat exchange tube 2. Straight pipe section 21. Corrugated pipe section 22. Center rod 3. Large blade 31. Hollow cavity 32. Inlet 321. Outlet 322. Impeller 33. Small blade 4. Rotary ring 41. Steel wire 5. Rubber layer 51. Raised plate 52. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 7 As shown, the present invention discloses a tube-winding tube partitioned coupled heat exchanger and its gradient tube arrangement method, comprising a tube shell 1, end caps 11 installed at both ends of the tube shell 1, an air inlet pipe 14 and an air outlet pipe 17 respectively installed on the two end caps 11, tube sheets 12 installed at both ends inside the tube shell 1, spiral heat exchange tubes 2 installed between the tube sheets 12, and a liquid inlet pipe 16 and a liquid outlet pipe 15 respectively installed at both ends of the tube shell 1;

[0035] The end of the spiral heat exchange tube 2 is provided with a straight tube section 21, and a rotating ring 41 is rotatably installed on the straight tube section 21. Small blades 4 are installed on the rotating ring 41, and the small blades 4 rotate when impacted by cold water.

[0036] The spiral heat exchange tube 2 is wound with steel wire 5, which is spiral in shape, and the two ends of the steel wire 5 are respectively connected to the rotating rings 41 at both ends of the spiral heat exchange tube 2.

[0037] A central rod 3 is installed inside the tube shell 1. The central rod 3 is located in the middle of each group of spiral heat exchange tubes 2. Both ends of the central rod 3 are rotatably mounted on the tube sheet 12. A large blade 31 is installed on one end of the central rod 3. The large blade 31 is located in the space enclosed by the end cap 11, the tube sheet 12, and the tube shell 1.

[0038] An impeller 33 is mounted on the central rod 3. The impeller 33 is a centrifugal impeller 33.

[0039] During operation, cold water enters the shell 1 through the inlet pipe 16, immersing the spiral heat exchange tube 2 inside the shell 1. After heat exchange, the heated cold water is discharged from the outlet pipe 15, ready for subsequent use. At the same time, hot air enters the space inside the end caps 11 at both ends of the shell 1 through the inlet pipe 14, and then enters the spiral heat exchange tube 2. After the hot air in the spiral heat exchange tube 2 exchanges heat with the cold water in the shell 1, the cooled hot air re-enters the space inside the other end cap 11 and is finally discharged from the heat exchanger through the outlet pipe 17.

[0040] During this process, when cold water enters the shell 1, the cold water will impact the small blades 4, which will cause the small blades 4 to rotate. Then, the steel wire 5 spirally wound on the spiral heat exchange tube 2 will also be rotated, grinding, scraping and cleaning the surface of the spiral heat exchange tube 2, so as to avoid the accumulation of dirt on the surface of the spiral heat exchange tube 2 after long-term operation, which would affect the heat exchange efficiency and heat exchange effect of the heat exchanger.

[0041] At the same time, the rotating steel wire 5 will disturb the liquid near the surface of the spiral heat exchange tube 2, causing the liquid to become turbulent, thereby promoting the heat exchange between the cold water in the shell 1 and the hot air in the spiral heat exchange tube 2, and improving the heat exchange efficiency and effect of the heat exchanger.

[0042] Meanwhile, as hot air passes through the spiral heat exchange tubes 2 inside the heat exchanger, the hot air impacts the large blades 31 inside the end cap 11, causing the large blades 31 to rotate. During this process, the impeller 33 on the central rod 3 inside the tube shell 1, under the action of centrifugal force, centrifugally throws out the cold water in the middle of each set of spiral heat exchange tubes 2 inside the tube shell 1, causing this part of the cold water to move from the middle of the tube shell 1 towards the inner wall of the tube shell 1, fully promoting the flow of cold water inside the tube shell 1, making the cold water in a turbulent state, improving the heat exchange effect and efficiency between the cold water and the hot air, so that the spiral heat exchange tubes 2, together with the central rod 3 and the impeller 33, can fully improve the heat exchange effect and efficiency of the heat exchanger.

[0043] In one embodiment of the present invention, the surface of the steel wire 5 is wrapped with a rubber layer 51, and the surface of the rubber layer 51 is provided with protruding pieces 52, which are in contact with the surface of the spiral heat exchange tube 2.

[0044] By setting a rubber layer 51 on the surface of the steel wire 5, the wear between the steel wire 5 and the surface of the spiral heat exchange tube 2 is reduced, and the steel wire 5 is prevented from being exposed to the liquid inside the tube shell 1 and corroded, thus extending the maintenance cycle and service life of the heat exchanger. At the same time, the protrusions 52 set on the rubber layer 51 scrape and clean the surface of the spiral heat exchange tube 2, so as to avoid the accumulation of dirt on the surface of the spiral heat exchange tube 2 and affect the heat exchange effect of the heat exchanger.

[0045] Meanwhile, the protrusions 52 make the surface of the steel wire 5 rough. When the steel wire 5 rotates around the surface of the spiral heat exchange tube 2, it will agitate the liquid near the surface of the spiral heat exchange tube 2 more significantly, change the liquid flow state near the surface of the spiral heat exchange tube 2, increase the temperature difference near the surface of the spiral heat exchange tube 2, and improve the heat exchange efficiency.

[0046] In one embodiment of the present invention, the protruding piece 52 is spiral in shape, and the spiral shapes of the protruding piece 52 and the steel wire 5 are in the same direction;

[0047] Since the protrusion 52 and the steel wire 5 have the same spiral shape direction, when the steel wire 5 rotates around the surface of the spiral heat exchange tube 2, it will thoroughly clean off the dirt and push the cleaned dirt towards the direction of liquid flow inside the tube shell 1. This will cause the cleaned dirt to be carried away with the cold water flow inside the tube shell 1, reducing the possibility of dirt residue and accumulation inside the tube shell 1, thereby facilitating the cleaning of the heat exchanger and extending the maintenance cycle of the heat exchanger.

[0048] In one embodiment of the present invention, a corrugated pipe section 22 is installed in the middle of the straight pipe section 21, the end of the straight pipe section 21 away from the spiral heat exchange tube 2 is installed on the tube sheet 12, and an elastic frame 13 is installed on the end of the straight pipe section 21 close to the spiral heat exchange tube 2.

[0049] The elastic frame 13 is located between the corrugated pipe section 22 and the rotating ring 41, and the small blade 4 is eccentrically installed on the straight pipe section 21.

[0050] The corrugated pipe section 22 and the elastic frame 13 isolate the spiral heat exchange tube 2 inside the shell 1 from the heat exchanger, reducing the impact of the vibration of the spiral heat exchange tube 2 on the heat exchanger. At the same time, since the small blades 4 are eccentrically installed on the straight pipe section 21, when the small blades 4 are impacted by the cold water entering the heat exchanger, the small blades 4 will rotate normally, causing the straight pipe section 21 and the spiral heat exchange tube 2 to vibrate. During this process, the vibration further changes the temperature gradient distribution of the cold water near the spiral heat exchange tube 2 inside the shell 1, making the temperature difference of the cold water near the spiral heat exchange tube 2 relatively larger, thereby improving the heat exchange efficiency between the hot air inside the spiral heat exchange tube 2 and the cold water inside the shell 1, and reducing the possibility of scale and dirt forming on the surface of the spiral heat exchange tube 2.

[0051] In one embodiment of the present invention, a baffle plate 18 is installed on the inner wall of the tube shell 1. Multiple sets of baffle plates 18 are provided. The baffle plates 18 are spiral in shape, and the pitch of each set of baffle plates 18 gradually increases along the liquid flow direction inside the tube shell 1.

[0052] The installed baffle 18 further guides the cold water flowing inside the shell 1. As the baffle 18 gradually increases the pitch along the direction of liquid flow inside the shell 1, the cold water that has just entered the shell 1 at a lower temperature will rotate around the spiral heat exchange tube 2 more times after being guided by the baffle 18. This prolongs the contact time between the cold water at a lower temperature and the hot air at a higher temperature, improves the heat exchange efficiency between the two, and makes the heat exchanger more efficient and effective.

[0053] In one embodiment of the present invention, a hollow cavity 32 is provided inside the central rod 3, an inlet 321 is provided at one end of the central rod 3 near the large impeller 33, and an outlet 322 is provided on the central rod 3, with the outlet 322 corresponding to the impeller 33 one by one.

[0054] When the impeller 33 rotates through the hollow cavity 32, the suction port 321, and the discharge port 322 inside the central rod 3, a suction force is generated at the suction port 321, thereby drawing the cold water that has just entered the shell 1 into the hollow cavity 32. Then, it is thrown out from the impeller 33 towards the inner wall of the shell 1, further promoting the liquid flow in the shell 1 and creating a turbulent state, increasing the liquid temperature difference near the spiral heat exchange tube 2, and improving the heat exchange effect.

[0055] Meanwhile, the hollow cavity 32 inside the central rod 3 transports cold water with a low temperature, ensuring that the liquid temperature thrown towards the inner wall of the tube shell 1 by the impeller 33 is relatively low. This avoids the situation where the radial flow of cold water in the tube shell 1 is easily obstructed due to the relatively dense distribution of the spiral heat exchange tubes 2 inside the tube shell 1. As a result, the liquid drawn in and thrown out by the impeller 33 when it rotates is the cold water with a higher temperature at the center of the tube shell 1 and between the spiral heat exchange tubes 2. This would lead to poor effect of the impeller 33 in circulating the liquid inside the tube shell 1 and increasing the temperature difference, thereby affecting the heat exchange effect and efficiency of the heat exchanger.

[0056] In one embodiment of the present invention, the diameter of the hollow cavity 32 at the end near the large impeller 33 is larger than that at the other end.

[0057] Since multiple sets of impellers 33 are installed on the central rod 3, in order to ensure that the impellers 33 on the central rod 3 that are far away from the large blades 31 can work normally, the diameter of the hollow cavity 32 that is close to the large impellers 33 is made larger. This ensures that each impeller 33 can get enough cool water at a lower temperature from the hollow cavity 32, so that the liquid flow in the tube shell 1 is guaranteed and the liquid is in a turbulent state, thereby increasing the liquid temperature difference near the spiral heat exchange tube 2 and making the heat exchange efficiency higher.

[0058] A gradient tube arrangement method for a shell-and-tube wound-tube zoned coupled heat exchanger, the tube arrangement method being applicable to any of the shell-and-tube wound-tube zoned coupled heat exchangers described above, the tube arrangement method comprising the following steps:

[0059] S1: Multiple sets of spiral heat exchange tubes 2 are evenly arranged around the center line of the tube shell 1; the spiral heat exchange tubes 2 form a multi-layer concentric structure along the circumference of different radii;

[0060] S2: The spiral heat exchange tubes 2 located on circles with different radii are arranged in a staggered manner.

[0061] The specific workflow is as follows:

[0062] During operation, cold water enters the shell 1 through the inlet pipe 16, immersing the spiral heat exchange tube 2 inside the shell 1. After heat exchange, the heated cold water is discharged from the outlet pipe 15, ready for subsequent use. At the same time, hot air enters the space inside the end caps 11 at both ends of the shell 1 through the inlet pipe 14, and then enters the spiral heat exchange tube 2. After the hot air in the spiral heat exchange tube 2 exchanges heat with the cold water in the shell 1, the cooled hot air re-enters the space inside the other end cap 11 and is finally discharged from the heat exchanger through the outlet pipe 17.

[0063] During this process, when cold water enters the shell 1, the cold water will impact the small blades 4, which will cause the small blades 4 to rotate. After that, the steel wire 5 spirally wound on the spiral heat exchange tube 2 will also be driven to rotate, cleaning the surface of the spiral heat exchange tube 2.

[0064] At the same time, the rotating steel wire 5 will disturb the liquid near the surface of the spiral heat exchange tube 2, causing the liquid to change into a turbulent state and promoting heat exchange.

[0065] Meanwhile, as hot air passes through the spiral heat exchange tubes 2 inside the heat exchanger, the hot air impacts the large blades 31 inside the end cap 11, causing the large blades 31 to rotate. During this process, the impeller 33 on the central rod 3 inside the tube shell 1 will, under the action of centrifugal force, centrifugally throw out the cold water in the middle of each set of spiral heat exchange tubes 2 inside the tube shell 1, causing this part of the cold water to move from the middle of the tube shell 1 towards the inner wall of the tube shell 1, fully promoting the flow of cold water inside the tube shell 1, making the cold water in a turbulent state, and improving the heat exchange effect and efficiency between the cold water and the hot air.

[0066] By setting a rubber layer 51 on the surface of the steel wire 5, the wear between the steel wire 5 and the surface of the spiral heat exchange tube 2 is reduced, and the steel wire 5 is prevented from being exposed to the liquid inside the tube shell 1 and corroded. At the same time, the surface of the spiral heat exchange tube 2 is cleaned by the protrusions 52 set on the rubber layer 51.

[0067] Meanwhile, the protrusions 52 make the surface of the steel wire 5 rough. When the steel wire 5 rotates around the surface of the spiral heat exchange tube 2, it will agitate the liquid near the surface of the spiral heat exchange tube 2 more significantly, change the liquid flow state near the surface of the spiral heat exchange tube 2, and increase the temperature difference near the surface of the spiral heat exchange tube 2.

[0068] Since the spiral shape of the protrusion 52 and the steel wire 5 are in the same direction, when the steel wire 5 rotates around the surface of the spiral heat exchange tube 2, it will thoroughly clean off the dirt and push the cleaned dirt towards the direction of liquid flow inside the tube shell 1, so that the cleaned dirt is carried away with the flow of cold water inside the tube shell 1.

[0069] The corrugated pipe section 22 and the elastic frame 13 isolate the spiral heat exchange tube 2 inside the shell 1 from the heat exchanger. At the same time, since the small blades 4 are eccentrically installed on the straight pipe section 21, when the small blades 4 are impacted by the cold water entering the heat exchanger, the small blades 4 will rotate normally and drive the straight pipe section 21 and the spiral heat exchange tube 2 to vibrate. During this process, the vibration further changes the temperature gradient distribution of the cold water near the spiral heat exchange tube 2 inside the shell 1, which increases the temperature difference of the cold water near the spiral heat exchange tube 2 and reduces the possibility of scale and dirt forming on the surface of the spiral heat exchange tube 2.

[0070] As the pitch of the baffle plate 18 gradually increases along the direction of liquid flow in the tube shell 1, the cold water that has just entered the tube shell 1 at a lower temperature will rotate around the spiral heat exchange tube 2 more times after being guided by the baffle plate 18, which prolongs the contact time between the cold water at a lower temperature and the hot air at a higher temperature and improves the heat exchange efficiency.

[0071] When the impeller 33 rotates through the hollow cavity 32, the suction port 321, and the discharge port 322 inside the central rod 3, a suction force is generated at the suction port 321, which draws the cold water that has just entered the shell 1 into the hollow cavity 32. Then, it is thrown out from the impeller 33 towards the inner wall of the shell 1, further promoting the liquid flow in the shell 1 and creating a turbulent state, thereby increasing the liquid temperature difference near the spiral heat exchange tube 2.

[0072] At the same time, cold water with low temperature is transported through the hollow cavity 32 inside the central rod 3, ensuring that the liquid temperature thrown against the inner wall of the tube shell 1 by the impeller 33 is relatively low.

[0073] Since multiple sets of impellers 33 are installed on the central rod 3, in order to ensure that the impellers 33 on the central rod 3 that are far away from the large blades 31 can work normally, the diameter of the hollow cavity 32 that is close to the large impellers 33 is made larger. This ensures that each impeller 33 can get enough cool water at a lower temperature from the hollow cavity 32, so that the liquid flow in the tube shell 1 is guaranteed and the liquid is in a turbulent state, thereby increasing the liquid temperature difference near the spiral heat exchange tube 2.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube-wound coiled tube partitioned coupling heat exchanger, comprising a tube shell (1), end caps (11) installed at both ends of the tube shell (1), an inlet pipe (14) and an outlet pipe (17) respectively installed on the two end caps (11), tube sheets (12) installed at both ends inside the tube shell (1), spiral heat exchange tubes (2) installed between the tube sheets (12), and an inlet pipe (16) and an outlet pipe (15) respectively installed at both ends of the tube shell (1); Its features are: The end of the spiral heat exchange tube (2) is provided with a straight tube section (21), a rotating ring (41) is rotatably installed on the straight tube section (21), and a small blade (4) is installed on the rotating ring (41). The small blade (4) rotates when impacted by cold water. The spiral heat exchange tube (2) is wound with steel wire (5), which is spiral in shape, and the two ends of the steel wire (5) are respectively connected to the swivel (41) at both ends of the spiral heat exchange tube (2); A central rod (3) is installed inside the tube shell (1). The central rod (3) is located in the middle of each group of spiral heat exchange tubes (2). Both ends of the central rod (3) are rotatably mounted on the tube sheet (12). A large blade (31) is installed on one end of the central rod (3). The large blade (31) is located in the space enclosed by the end cap (11), the tube sheet (12), and the tube shell (1). An impeller (33) is mounted on the central rod (3), and the impeller (33) is a centrifugal impeller (33); The surface of the steel wire (5) is covered with a rubber layer (51), and the surface of the rubber layer (51) is provided with protrusions (52), which are in contact with the surface of the spiral heat exchange tube (2). The protrusion (52) is spiral in shape, and the spiral shapes of the protrusion (52) and the steel wire (5) are in the same direction; The central rod (3) has a hollow cavity (32) inside. The central rod (3) has an inlet (321) at one end near the large impeller (33). The central rod (3) has an outlet (322) on it. The outlet (322) corresponds one-to-one with the impeller (33). The diameter of the hollow cavity (32) near the large impeller (33) is larger than that of the other end. Through the hollow cavity (32) in the central rod (3), the suction port (321) and the discharge port (322), when the impeller (33) rotates, a suction force is generated at the suction port (321), thereby drawing in the cold water that has just entered the shell (1) into the hollow cavity (32). Then, it is thrown out from the impeller (33) towards the inner wall of the shell (1).

2. The tube-winding coiled tube partitioned coupled heat exchanger according to claim 1, characterized in that: A corrugated pipe section (22) is installed in the middle of the straight pipe section (21). The end of the straight pipe section (21) away from the spiral heat exchange tube (2) is installed on the tube sheet (12). An elastic frame (13) is installed on the end of the straight pipe section (21) close to the spiral heat exchange tube (2). The elastic frame (13) is located between the corrugated pipe section (22) and the swivel (41), and the small blade (4) is eccentrically installed on the straight pipe section (21).

3. The tube-winding coiled tube partitioned coupled heat exchanger according to claim 1, characterized in that: The inner wall of the tube shell (1) is equipped with baffles (18), and there are multiple sets of baffles (18). The baffles (18) are spiral in shape, and the pitch of each set of baffles (18) gradually increases along the direction of liquid flow inside the tube shell (1).

Images