Energy-saving seamless titanium finned tube for ship heat exchange unit

Abstract

The invention relates to the technical field of finned tubes, in particular to an energy-saving seamless titanium finned tube for a ship heat exchange unit. Comprising symmetrically-distributed base plates, the symmetrically-distributed base plates are jointly and fixedly connected with two sets of symmetrically-distributed circular base pipes, spiral fins are fixedly connected to the outer sides of the circular base pipes, the circular base pipes and the spiral fins each comprise an upstream face and a downstream face, and the circular base pipes are rotationally connected with symmetrically-distributed rotating rings; the rotating ring is fixedly connected with fixing shafts and fixing handles distributed in the circumferential direction, the symmetrically-distributed fixing shafts are jointly and rotationally connected with a first flow guide plate, one fixing handle on the rotating ring is slidably connected with a fixing plate, and the symmetrically-distributed fixing plates are jointly and fixedly connected with a second flow guide plate. Water flow on the downstream face of the spiral fin is guided through the first flow guide plate and the second flow guide plate, the flowing direction of the water flow along the downstream face of the spiral fin is changed, the size of a vortex stagnation area of the downstream face of the spiral fin is reduced, and impurities are prevented from staying in the vortex stagnation area.

Description

Technical Field

[0001] The invention relates to the technical field of finned tubes, and in particular to an energy-saving seamless titanium finned tube for a ship heat exchange unit. Background Art

[0002] Seamless titanium fin tube is a basic unit of heat exchange device. It is usually made by cold extrusion rolling. It is composed of round base tube and spiral fin. Because titanium metal has excellent characteristics such as light weight and good chlorine corrosion resistance, seamless titanium fin tube is often used in heat exchange unit of marine ship. By making seamless titanium fin tube and seawater exchange heat, the coolant in ship motor is cooled or the seawater is evaporated and desalinated. Seamless titanium fin tube usually includes water-facing surface (the side facing the water flow) and water-receiving surface (the side facing the water flow). The water flow on the water-facing surface directly contacts with the seamless titanium fin tube. The fin tubes are in contact with each other, and the water flow velocity is relatively large. However, since the water flow needs to bypass the seamless titanium fin tubes before flowing along the seamless titanium fin tubes, vortices are often formed on the back water surface of the seamless titanium fin tubes. The vortices cause the water flow velocity on the back water surface of the seamless titanium fin tubes to decrease, and even a large area of ​​vortex stagnation zone is produced. The water flow velocity in the vortex stagnation zone is too low, which leads to a decrease in the heat exchange efficiency of the seamless titanium fin tubes at this location. At the same time, impurities in the water flow are easy to stay in the vortex stagnation zone, causing serious scaling of the seamless titanium fin tubes at this location. Therefore, it is urgent to develop an energy-saving seamless titanium fin tube for ship heat exchange units. Summary of the invention

[0003] In order to overcome the disadvantage that the eddy current stagnation zone on the back water surface of the seamless titanium fin tube is large, which affects the heat exchange efficiency of the seamless titanium fin tube, the present invention provides an energy-saving seamless titanium fin tube for a ship heat exchange unit.

[0004] The technical solution of the present invention is: an energy-saving seamless titanium fin tube for a ship heat exchange unit, comprising a symmetrically distributed base plate, the symmetrically distributed base plate is commonly fixed with two groups of symmetrically distributed circular base tubes, each group includes a number of evenly distributed circular base tubes, all the circular base tubes on the same base plate are interconnected through arc bends, the outer side of the circular base tube is fixed with a spiral fin, the circular base tube and the spiral fin both include a water-facing surface and a water-receiving surface, the circular base tube is rotatably connected with a symmetrically distributed rotating ring, and the spiral fin is located between adjacent and symmetrically distributed rotating rings. Rings, the rotating ring is fixedly connected with a fixed shaft and circumferentially distributed fixed handles, the symmetrically distributed fixed shafts are jointly rotatably connected with a first guide plate, one of the fixed handles on the rotating ring is slidably connected with a fixed plate, the symmetrically distributed fixed plates are jointly fixed with a second guide plate, the first guide plate and the second guide plate are both located at the back water surface of the adjacent circular base tubes, the circular base tube is provided with a swinging mechanism for controlling the swinging and opening of the adjacent first guide plates, and the circular base tube is provided with an auxiliary heat conduction mechanism for assisting the adjacent spiral fins in heat exchange.

[0005] Further description: the first guide plate is provided with a first guide arc and a first guide tail end, the first guide plate is located between two adjacent and symmetrically distributed circular base tubes, the second guide plate is provided with a second guide arc and a second guide tail end, the second guide plate is located outside the two adjacent and symmetrically distributed circular base tubes, the first guide arc and the adjacent second guide arc are both facing the side of the water-facing surface of the adjacent circular base tube, and the first guide tail end and the adjacent second guide tail end are both located on the side of the water-retaining surface of the adjacent circular base tube.

[0006] It is further explained that the arc center of the first drainage arc points to the axial direction of the adjacent circular base tube, and the bending direction of the second drainage arc is the same as the bending direction of the adjacent first drainage arc.

[0007] It is further explained that the first drainage arc has the same height as the adjacent second drainage arc, the height of the first drainage tail end is higher than the height of the adjacent second drainage tail end, and the angle between the line between the first drainage tail end and the axis of the circular base tube and the line between the adjacent second drainage tail end and the axis of the circular base tube is 35°-55°.

[0008] Further description, the swing mechanism includes symmetrically distributed fixing frames, the symmetrically distributed fixing frames are all fixedly connected to adjacent circular base pipes, and guide grooves are provided on opposite sides of the symmetrically distributed fixing frames. A sealing plate is rotatably connected to the side of the fixing frame close to the adjacent first guide plate, and a symmetrically distributed rotating shaft is fixed to the side of the first guide plate away from the symmetrically distributed fixed shaft, the rotating shaft is slidably connected to the adjacent sealing plate, and the rotating shaft is slidably connected to the guide groove on the adjacent fixing frame, and the symmetrically distributed fixing frames are jointly provided with a fixing component for fixing the adjacent second guide plate.

[0009] Further description, the auxiliary heat conduction mechanism includes a baffle, which is slidably connected between two adjacent rotating rings, and the baffle is fixed with symmetrically distributed connecting plates, and the symmetrically distributed connecting plates are commonly fixed with two symmetrically distributed groups of third guide plates, each group includes evenly distributed third guide plates, and the baffle is in contact and cooperate with the adjacent circular base tubes and the adjacent spiral fins, and the third guide plate is in contact and cooperate with the adjacent spiral fins, and the farther the third guide plate is from the adjacent baffle, the greater the distance between the adjacent circular base tube.

[0010] It is further explained that the third guide plate is a C-shaped plate, and the opening side of the third guide plate faces away from the adjacent baffle plate.

[0011] Further description, the fixing assembly includes symmetrically distributed rotating plates, and the symmetrically distributed rotating plates are all limitedly rotatably connected to the adjacent second guide plate, and the rotating plates are limitedly matched with the adjacent fixed handles. The fixing frame is fixedly connected with a fixing column near the adjacent rotating plate, and the fixing column is in contact with the rotating plate. The fixing column is threadedly connected with a sealing bolt, and the sealing bolt is extruded and matched with the adjacent rotating plate.

[0012] It is further explained that the second guide plate is fixedly connected with evenly distributed vortex generators, and the vortex generators are located on one side of the adjacent second guide plate close to the adjacent second guide tail end, and the vortex generators are located in the intervals within the adjacent spiral fins.

[0013] Further description, it also includes a micro-base tube, which is fixed to the substrate, and a micro-fin is fixed to the outer side of the micro-base tube. The micro-base tube is located between two adjacent and symmetrically distributed circular base tubes, and the axis of the micro-base tube is located between two adjacent and symmetrically distributed second drainage tail ends.

[0014] The beneficial effects of the present invention are as follows: the present invention guides the water flow on the back water surface of the spiral fin by the first guide plate and the second guide plate, and reduces the size of the vortex stagnation zone on the back water surface of the spiral fin by changing the direction of the water flow along the back water surface of the spiral fin, thereby increasing the heat exchange efficiency of the back water surface of the spiral fin and preventing impurities from staying in the vortex stagnation zone.

[0015] The present invention guides the water flow on the water-facing surface of the spiral fin by means of components such as a baffle plate and a third guide plate, thereby reducing the kinetic energy loss when the water flow directly impacts the wall of the circular base pipe, thereby increasing the heat exchange efficiency between the circular base pipe and the spiral fin, and further saving the energy consumption for promoting heat exchange between the spiral fin and seawater.

[0016] The present invention controls the baffle and adjacent components to rotate freely, thereby facilitating all-round cleaning of components such as the circular base tube and the spiral fins, thereby increasing the convenience of cleaning the circular base tube and the spiral fins and further increasing the applicability of the device.

[0017] The present invention further utilizes the water flow through the cooperation between the micro-tube and the adjacent first guide plate, and the micro-tube is less affected by the impact of the water flow on the front surface and the vortex on the back surface, thereby improving the overall heat exchange efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the substrate, the circular base tube and the fixing frame of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the circular base tube, the fixed handle and the baffle of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the circular base tube, the fixed handle and the fixed frame of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the circular base pipe, the first guide plate and the fixing frame of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating ring, the second guide plate and the fixing frame of the present invention; Figure 7 An exploded view of the rotating ring, the fixing frame and the sealing plate of the present invention; Figure 8 It is a right side view of the circular base tube, spiral fins and baffles of the present invention; Fig. 9 It is a cross-sectional view of the fixing frame, the rotating plate and the sealing bolt of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the spiral fin, the second guide plate and the vortex generator of the present invention; Fig.11It is a right side view of the circular base tube, the first guide plate and the micro base tube of the present invention.

[0019] Explanation of the reference numerals: 1: base plate, 2: circular base tube, 3: spiral fin, 4: rotating ring, 5: fixed shaft, 6: fixed handle, 7: first guide plate, 71: first drainage arc, 72: first drainage tail end, 8: fixed plate, 9: second guide plate, 91: second drainage arc, 92: second drainage tail end, 10: fixed frame, 101: guide groove, 11: sealing plate, 12: rotating shaft, 13: baffle, 14: connecting plate, 15: third guide plate, 16: rotating plate, 17: fixed column, 18: sealing bolt, 19: vortex generator, 20: micro base tube. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Embodiment 1: Because vortices are often formed on the back water surface of the existing seamless titanium fin tube and a vortex stagnation zone is generated, the flow velocity is greatly reduced when the water flows through the vortex stagnation zone, which not only causes the flow velocity of the seamless titanium fin tube to decrease at that location, but also causes impurities in the water flow to stay in the vortex stagnation zone, causing serious scaling of the seamless titanium fin tube at that location.

[0022] In view of the above problems, the present invention proposes an energy-saving seamless titanium fin tube for a ship heat exchange unit. Figure 1-Figure 6 , Figure 8 and Fig.10, including two base plates 1 symmetrically distributed on the left and right, the two base plates 1 are installed in the ship heat exchanger, the specific number of groups of the installed base plates 1 is determined by the staff according to the needs, the two base plates 1 are fixedly connected with two groups of circular base tubes 2 symmetrically distributed front and back, each group includes two circular base tubes 2 evenly distributed up and down, all the circular base tubes 2 on the same base plate 1 are interconnected through arc bends (the arc bends are not shown in the figure, and this connection method is the existing connection method), the outer side of the circular base tube 2 is fixedly connected with a spiral fin 3, the circular base tube 2 and the spiral fin 3 both include a water-facing surface and a water-receiving surface, wherein the water-facing surface is set to be directly on the upper side, and the water-receiving surface is set to be directly on the lower side, and the circular base tube 2 rotates Two rotating rings 4 symmetrically distributed on the left and right are connected, the spiral fin 3 is located between the two adjacent rotating rings 4, the rotating ring 4 is fixedly connected with a fixed shaft 5 and a circumferentially distributed fixed handle 6, the fixed handle 6 is convenient for the staff to rotate the adjacent rotating rings 4, the two adjacent fixed shafts 5 are rotated together and connected with a first guide plate 7, the upper side of the first guide plate 7 is provided with a first drainage arc 71, the lower side of the first guide plate 7 is provided with a first drainage tail end 72, the first guide plate 7 is located between two adjacent and symmetrically distributed circular base pipes 2, a fixed handle 6 on the lower side of the rotating ring 4 is slidably connected with a fixed plate 8, the two symmetrically distributed fixed plates 8 are jointly fixed with a second guide plate 9, the first The guide plate 7 and the second guide plate 9 are both located at the back water surface of the adjacent circular base pipe 2. The first guide plate 7 and the adjacent second guide plate 9 work together to guide the seawater, so that the seawater flows around the back water surface of the adjacent circular base pipe 2. The upper side of the second guide plate 9 is provided with a second guide arc 91, and the lower side of the second guide plate 9 is provided with a second guide tail end 92. The second guide plate 9 is located outside the two adjacent and symmetrically distributed circular base pipes 2. The distance between the first guide arc 71 on the first guide plate 7 and the second guide arc 91 on the second guide plate 9 and the circular base pipe 2 is greater than the distance between the adjacent first guide tail end 72 and the adjacent second guide tail end 92 and the circular base pipe 2. , used to accelerate the speed of seawater flowing along the first guide plate 7 and the second guide plate 9, and promote the heat exchange efficiency between seawater and adjacent spiral fins 3. The arc center of the first guide arc 71 points to the axial direction of the adjacent circular base tube 2, and is used to prevent the seawater near the adjacent circular base tube 2 from flowing to the adjacent and symmetrical circular base tube 2. The bending direction of the second guide arc 91 is the same as the bending direction of the adjacent first guide arc 71, and is used to guide the water outside the adjacent circular base tube 2 to flow close to the adjacent circular base tube 2. The first guide arc 71 is the same height as the adjacent second guide arc 91, but the height of the first guide tail end 72 is higher than the height of the adjacent second guide tail end 92, so as to Figure 7Taking the perspective and the components displayed therein as an example, the seawater guided out by the first drainage tail end 72 flows to the lower left side, while the seawater guided out by the second drainage tail end 92 flows to the right. The angle between the line connecting the first drainage tail end 72 and the axis of the circular base pipe 2 and the line connecting the adjacent second drainage tail end 92 and the axis of the circular base pipe 2 is 35°-55°, which is used to ensure that the flow direction of the seawater guided out by the first drainage tail end 72 and the flow direction of the seawater guided out by the second drainage tail end 92 are at an obtuse angle, so as to further reduce the size of the vortex stagnation zone. The second guide plate 9 is fixedly connected with a plurality of vortex generators 19 evenly distributed on the left and right (the vortex generator 19 is an existing device, referring to the vortex generator installed on a large truck, and the vortex generator 19 is used to manufacture a small vortex mitigation phase The vortex generator 19 is located on the side of the adjacent second guide plate 9 close to the adjacent second drainage tail end 92, and the vortex generator 19 is located at the interval in the adjacent spiral fin 3. The vortex generator 19 is used to slow down the flow rate of the adjacent seawater, thereby causing the seawater flowing out of the tail of the first drainage tail end 72 to drive the seawater flowing out of the tail of the adjacent second drainage tail end 92 to flow, reducing the impact force when the seawater on both sides converges, thereby reducing the kinetic energy loss when the seawater on both sides converges, and a swinging mechanism for controlling the swinging and opening of the adjacent first guide plate 7 is provided on the circular base tube 2, and an auxiliary heat conduction mechanism for assisting the adjacent spiral fins 3 in heat exchange is provided on the circular base tube 2.

[0023] Reference Figure 2-Figure 8 The swing mechanism includes two fixed frames 10 symmetrically distributed on the left and right sides, and the two fixed frames 10 are both fixedly connected to adjacent circular base pipes 2. The opposite sides of the symmetrically distributed fixed frames 10 are each provided with a guide groove 101. A sealing plate 11 is rotatably connected to a side of the fixed frame 10 close to the adjacent first guide plate 7. The sealing plate 11 is used to cover the guide groove 101 on the adjacent fixed frame 10. The distance between the guide groove 101 and the axis of the fixed frame 10 gradually increases, and the distance between the side close to the adjacent first guide plate 7 and the axis of the fixed frame 10 is the smallest. Two rotating shafts 12 symmetrically distributed on the left and right sides are fixedly connected to the upper side of the first guide plate 7. The rotating shaft 12 is slidably connected to the adjacent sealing plate 11. The rotating shaft 12 is slidably connected to the guide groove 101 on the adjacent fixed frame 10. When the rotating shaft 12 slides along the adjacent guide groove 101, the rotating shaft 12 drives the adjacent first guide plate 7 to gradually open to the side away from the adjacent circular base pipe 2. The two adjacent fixed frames 10 are jointly provided with a fixing component for fixing the adjacent second guide plate 9.

[0024] Reference Figure 2-Figure 8The auxiliary heat conduction mechanism includes a baffle 13 slidably connected between two adjacent rotating rings 4, the baffle 13 is fixedly connected with a connecting plate 14 symmetrically distributed left and right, and the two adjacent connecting plates 14 are commonly fixedly connected with two groups of third guide plates 15 symmetrically distributed front and back, each group includes two third guide plates 15 evenly distributed front and back, the third guide plate 15 is a C-shaped plate, and the opening side of the third guide plate 15 is facing away from the adjacent baffle 13, which is used to enable the third guide plate 15 to better guide the seawater and timely change the flow direction of the seawater on the upper side of the spiral fin 3. The baffle 13 contacts and cooperates with the adjacent circular base tube 2 and the adjacent spiral fin 3. When the baffle 13 rotates, the baffle 13 cleans the outer surfaces of the adjacent spiral fin 3 and the adjacent circular base tube 2, and the third guide plate 15 contacts and cooperates with the adjacent spiral fin 3. The farther the third guide plate 15 is from the adjacent baffle 13, the greater the distance between the third guide plate 15 and the adjacent circular base tube 2 is, so as to avoid the third guide plate 15 excessively squeezing the space for the flow of seawater and affecting the normal flow of seawater.

[0025] Reference Figure 8 and Fig. 9 The fixing assembly includes two rotating plates 16 that are symmetrically distributed on the left and right. The rotating plates 16 are connected to the adjacent second guide plates 9 in a limited rotation manner. The rotating plates 16 are limitedly matched with the adjacent fixed handles 6. The rotating plates 16 are sleeved on the adjacent fixed handles 6 and matched with the adjacent fixed plates 8 to keep the adjacent second guide plates 9 and the adjacent rotating rings 4 in a relatively fixed state. The fixing frame 10 is fixedly connected with a fixing column 17 near the adjacent rotating plate 16. The fixing column 17 is in contact with the rotating plate 16. The fixing column 17 is threadedly connected with a sealing bolt 18. The sealing bolt 18 squeezes the adjacent rotating plate 16 to maintain the relative position between the rotating plate 16 and the adjacent fixed column 17, thereby limiting the adjacent rotating ring 4.

[0026] When the staff installs the device in the ship heat exchanger, they install the array substrate 1 in the ship heat exchanger to ensure that the water-facing surface of each group of circular base tubes 2 faces the direction of the water flow in the ship heat exchanger (assuming that the heat exchanger is fed with seawater from top to bottom, the water-facing surface of the circular base tube 2 faces directly upward, such as Figure 7 As shown), the circular base tube 2 in each group of base plates 1 is connected to the external circulating water pump. When the staff needs to use the ship heat exchange unit, the circulating cooling water is pumped into the circular base tube 2 through the circulating water pump, and seawater is injected into the circular base tube 2 through the water inlet of the ship heat exchange unit. The seawater exchanges heat with the adjacent circular base tube 2 during the process of flowing from top to bottom, and finally the seawater is discharged from the lower water outlet.

[0027] In the process of seawater flowing from top to bottom, the upper left circular base pipe 2 and adjacent components are taken as an example (and for the convenience of description, the following are all Figure 7The seawater first contacts the baffle 13 and the four third guide plates 15, and the seawater is guided by the baffle 13 and the adjacent third guide plates 15 to flow into the spiral fin 3. The seawater is guided by the baffle 13 to gradually reduce the angle between its flow direction and the surface of the circular base pipe 2, so that the seawater flowing toward the axis of the circular base pipe 2 is quickly turned to flow along the outer surface of the circular base pipe 2, thereby reducing the kinetic energy loss of the seawater during the flow. When the two adjacent third guide plates 15 guide the seawater, the seawater is quickly turned toward the C-shaped opening direction, so that the seawater thereon can quickly converge into the seawater flowing along the surface of the circular base pipe 2. By guiding the seawater on the water-facing surface (upper side) of the circular base pipe 2, the kinetic energy loss of the seawater when it vertically impacts the circular base pipe 2 is reduced, so that the seawater is forced to flow along the outer surface of the circular base pipe 2 at a higher speed, thereby increasing the heat exchange efficiency between the seawater and the spiral fin 3 and the circular base pipe 2.

[0028] When the seawater gradually flows to the side of the circular base pipe 2 during the flow process, the seawater flowing from top to bottom is guided by the left side of the first guide arc 71 and the right side of the second guide arc 91 to flow toward the surface of the circular base pipe 2, and the seawater guided by the baffle 13 and the third guide plate 15 has a smaller angle with the left side of the first guide arc 71 and the right side of the second guide arc 91 (therefore, the angle between the flow direction of the seawater at the two places and the adjacent first guide arc 71 surface and the angle between the adjacent second guide arc 91 surface are less than 90°), so the seawater continues to flow along the outer surface of the circular base pipe 2 under the guidance of the first guide plate 7 and the second guide plate 9, and the distance between the first guide arc 71 on the first guide plate 7 and the second guide arc 91 on the second guide plate 9 and the circular base pipe 2 is greater than the distance between the first guide tail end 72 and the second guide tail end 92 and the circular The distance between the base pipe 2 is such that the flow velocity of the seawater guided by the first guide plate 7 and the second guide plate 9 gradually increases, and the seawater guided by the first guide plate 7 is finally ejected to the lower left side from the first guide tail end 72, while the seawater guided by the second guide plate 9 is finally ejected horizontally to the right side by the guidance of the second guide tail end 92. Since the angle between the flow direction of the seawater guided by the second guide plate 9 and the flow direction of the seawater guided by the first guide plate 7 is an obtuse angle, the size of the eddy current stagnation zone on the back water surface of the circular base pipe 2 is effectively reduced, and when the eddy current stagnation zone on the back water surface of the circular base pipe 2 and the spiral fin 3 is too large, it is avoided that the flow velocity of the surrounding seawater is affected, the heat exchange efficiency between the circular base pipe 2 and the spiral fin 3 and the surrounding seawater is reduced, and the movement of impurities on the back water surface of the circular base pipe 2 and the spiral fin 3 stops, which leads to the accumulation and scaling of impurities on the back water surface of the circular base pipe 2 and the spiral fin 3.

[0029] When the seawater is guided by the second guide plate 9 and passes through the adjacent vortex generator 19, the seawater is diverted by the adjacent vortex generator 19 to generate a vortex, which gradually increases during the flow process, causing the flow velocity of the surrounding seawater to decrease, so that the flow velocity of the seawater flowing to the right from the second drainage tail end 92 is lower than the flow velocity of the seawater flowing to the lower left from the first drainage tail end 72, reducing the loss of kinetic energy when the seawater on both sides converges. After the seawater on both sides converges, it flows out to the lower right direction. At this time, the seawater flowing out of the circular base pipes 2 on the left and right sides converges in the middle and flows downward together.

[0030] Because the flow direction of seawater changes gradually during the process of flowing downward from the circular base tube 2, the amplitude of the change in kinetic energy of the seawater is small, that is, the amplitude of the change in the flow velocity of the seawater is small, which effectively increases the heat exchange efficiency between the circular base tube 2 and the spiral fins 3 and the seawater, and saves the energy consumption of heat exchange between the spiral fins 3 and the seawater. Moreover, because the flow velocity of the seawater changes less at the position close to the circular base tube 2 and the spiral fins 3, and the size of the vortex stagnation zone on the back water surface of the circular base tube 2 and the spiral fins 3 is suppressed, it is effectively avoided that impurities in the seawater are accumulated and scaled in large quantities on the back water surface of the circular base tube 2 and the spiral fins 3.

[0031] When the user is repairing and cleaning the ship's heat exchange unit, the staff Figure 1 Taking the base plate 1 and adjacent components shown in the figure as an example, the staff first unscrews all the sealing bolts 18 in turn, and the sealing bolts 18 release the cooperation with the adjacent rotating plate 16. After the rotating plate 16 loses its limit, the staff controls the rotating plate 16 on the same second guide plate 9 to swing downward and open, and then the staff drags the second guide plate 9 downward, so that the second guide plate 9 drives the adjacent fixed plate 8 to release the connection with the adjacent fixed handle 6. At this time, the front side surfaces of the front circular base tube 2 and the spiral fin 3, and the rear side surfaces of the rear circular base tube 2 and the spiral fin 3 are exposed to the outside. Taking the cleaning of the circular base tube 2 on the upper side of the front as an example, the staff rotates the fixed handle 6 counterclockwise (from the right to the left perspective), and the fixed handle 6 drives the adjacent rotating ring 4 to rotate, and the rotating ring 4 drives the baffle 13 and the fixed shaft 5 together Rotate, at this time the baffle 13 slides to the left along the spiral fin 3, the staff can use the baffle 13 to clean the surface of the spiral fin 3 and the surface of the circular base tube 2, and when the baffle 13 rotates to the front side, the staff can clean the baffle 13 and adjacent parts. When the baffle 13 rotates to the front side, the fixed shaft 5 drives the first guide plate 7 to rotate to the upper side of the spiral fin 3. At this time, the rotating shaft 12 slides along the adjacent guide groove 101 toward the side away from the circular base tube 2, so the first diversion arc 71 on the first guide plate 7 swings toward the side away from the circular base tube 2 again. When using a high-pressure water gun to flush the circular base tube 2 and the spiral fin 3, the first guide plate 7 cleans the rear side of the circular base tube 2 and the spiral fin 3 by diverting the high-pressure water flow downward.

[0032] After the staff has finished cleaning the circular base tube 2 and the spiral fins 3, they manually clean the second guide plate 9. Finally, the staff reverses and resets the rotating ring 4 according to the above principle, and re-sleeves the fixing plate 8 of the second guide plate 9 on the adjacent fixing handle 6. After the staff swings the rotating plate 16 back to its original position, they re-tighten the sealing bolt 18 on the adjacent fixing column 17, and then reinstall the second guide plate 9 on the adjacent fixing frame 10.

[0033] Example 2: Based on Example 1, Figure 2 and Fig.11 , and further includes a micro-based tube 20 fixedly connected to the substrate 1. The micro-based tube 20 is connected to the cooling system of the ship heat exchange unit through a hose. The micro-based tube 20 is used to improve the space utilization rate in the symmetrically distributed substrate 1, so as to further improve the heat exchange efficiency between the device and seawater. Micro-fins are fixedly connected to the outer side of the micro-based tube 20. The micro-based tube 20 is located between two adjacent and symmetrically distributed circular base tubes 2, and the axis of the micro-based tube 20 is located between two adjacent and symmetrically distributed second drainage tail ends 92, which are used to promote the seawater discharged downward from the circular base tubes 2 on both sides to flow along the lower side of the micro-based tube 20, reduce the impact force when the seawater on the two sides of the circular base tubes 2 converge, and reduce the size of the vortex stagnation zone on the lower side of the micro-based tube 20.

[0034] In the process of seawater flowing from top to bottom, the seawater between the two first guide plates 7 is guided by the back side of the adjacent first guide arc 71 and flows downward at a faster speed. When the seawater there contacts the micro-tube 20 during the process of flowing downward, it flows to the left and right sides under the diversion effect of the micro-tube 20. At this time, because the diameter of the micro-tube 20 is small, the effect of the micro-tube 20 on the diversion of seawater is small. After the seawater on the lower side of the spiral fins 3 on both sides flows out, the seawater on both sides flows toward the adjacent micro-tube 20 together. Because the axis of the micro-tube 20 is located in the middle of the two adjacent second guide tail ends 92, the seawater flowing out on both sides only contacts the lower side of the micro-tube 20 during the flow. The seawater contacts the tube wall on the side of the micro-based tube 20, and the seawater is diverted to the downward side in advance under the action of the diversion of the micro-based tube 20, thereby reducing the impact force when the seawater on both sides converges. Moreover, because the seawater on both sides converges at the lower side of the micro-based tube 20, the water flow at the lower side of the micro-based tube 20 flows together driven by the seawater on both sides. Therefore, the seawater near the micro-based tube 20 is affected by the diversion of the adjacent components and is always in a relatively uniform water flow. The eddy stagnation zone on the lower side of the micro-based tube 20 is small, which ensures that the heat exchange efficiency of the micro-based tube 20 is always in a high state. Finally, the seawater flows toward the lower circular base tube 2 under the diversion action of the lower first guide plate 7, the baffle plate 13 and other components.

[0035] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of protection claimed herein.

Claims

1. An energy-saving seamless titanium fin tube for a ship heat exchange unit, characterized by: The invention comprises a symmetrically distributed base plate (1), wherein the symmetrically distributed base plates (1) are fixedly connected to two symmetrically distributed groups of circular base tubes (2), each group comprising a plurality of evenly distributed circular base tubes (2), and all the circular base tubes (2) on the same base plate (1) are interconnected via arc bent tubes, a spiral fin (3) is fixedly connected to the outer side of the circular base tube (2), and the circular base tube (2) and the spiral fin (3) both comprise a water-facing surface and a water-receiving surface, and the circular base tube (2) is rotatably connected to symmetrically distributed rotating rings (4), the spiral fin (3) is located between adjacent and symmetrically distributed rotating rings (4), and the rotating ring (4) is fixedly connected to a fixed shaft ( 5) and circumferentially distributed fixed handles (6), the symmetrically distributed fixed shafts (5) are rotatably connected to a first guide plate (7), one of the fixed handles (6) on the rotating ring (4) is slidably connected to a fixed plate (8), the symmetrically distributed fixed plates (8) are jointly fixed to a second guide plate (9), the first guide plate (7) and the second guide plate (9) are both located at the back water surface of the adjacent circular base tube (2), the circular base tube (2) is provided with a swing mechanism for controlling the swinging and opening of the adjacent first guide plate (7), and the circular base tube (2) is provided with an auxiliary heat conduction mechanism for assisting the adjacent spiral fins (3) in heat exchange.

2. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 1 is characterized in that: The first guide plate (7) is provided with a first guide arc (71) and a first guide tail end (72), and the first guide plate (7) is located between two adjacent and symmetrically distributed circular base tubes (2). The second guide plate (9) is provided with a second guide arc (91) and a second guide tail end (92), and the second guide plate (9) is located outside the two adjacent and symmetrically distributed circular base tubes (2). The first guide arc (71) and the adjacent second guide arc (91) are both oriented toward the water-facing side of the adjacent circular base tube (2), and the first guide tail end (72) and the adjacent second guide tail end (92) are both located at the water-repelling side of the adjacent circular base tube (2).

3. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 2 is characterized in that: The arc center of the first drainage arc (71) points to the axial direction of the adjacent circular base tube (2), and the bending direction of the second drainage arc (91) is the same as the bending direction of the adjacent first drainage arc (71).

4. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 3 is characterized in that: The first drainage arc (71) has the same height as the adjacent second drainage arc (91), the first drainage tail end (72) has a height higher than the adjacent second drainage tail end (92), and the angle between a line connecting the first drainage tail end (72) and the axis of the circular base tube (2) and a line connecting the adjacent second drainage tail end (92) and the axis of the circular base tube (2) is 35°-55°.

5. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 4 is characterized in that: The swing mechanism comprises symmetrically distributed fixing frames (10), the symmetrically distributed fixing frames (10) are all fixedly connected to adjacent circular base pipes (2), the opposite sides of the symmetrically distributed fixing frames (10) are all provided with guide grooves (101), the side of the fixing frames (10) close to the adjacent first guide plate (7) is rotatably connected to a sealing plate (11), the side of the first guide plate (7) away from the symmetrically distributed fixing shaft (5) is fixedly connected to a symmetrically distributed rotating shaft (12), the rotating shaft (12) is slidably connected to the adjacent sealing plate (11), the rotating shaft (12) is slidably connected to the guide groove (101) on the adjacent fixing frame (10), and the symmetrically distributed fixing frames (10) are jointly provided with a fixing component for fixing the adjacent second guide plate (9).

6. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 5 is characterized in that: The auxiliary heat conduction mechanism comprises a baffle (13), the baffle (13) being slidably connected between two adjacent rotating rings (4), the baffle (13) being fixedly connected to symmetrically distributed connecting plates (14), the symmetrically distributed connecting plates (14) being commonly fixedly connected to two symmetrically distributed groups of third flow guide plates (15), each group comprising evenly distributed third flow guide plates (15), the baffle (13) being in contact with and matching the adjacent circular base tube (2) and the adjacent spiral fins (3), the third flow guide plates (15) being in contact with and matching the adjacent spiral fins (3), and the distance between the third flow guide plates (15) and the adjacent circular base tubes (2) being greater as the distance from the adjacent baffle (13) is greater.

7. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 6 is characterized in that: The third guide plate (15) is a C-shaped plate, and the opening side of the third guide plate (15) faces away from the adjacent baffle plate (13).

8. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 5 is characterized by: The fixing assembly comprises symmetrically distributed rotating plates (16), the symmetrically distributed rotating plates (16) are all limitedly rotatably connected to the adjacent second guide plate (9), the rotating plates (16) are limitedly matched with the adjacent fixed handle (6), the fixing frame (10) is fixedly connected with a fixing column (17) near the adjacent rotating plate (16), the fixing column (17) is in contact with the rotating plate (16), the fixing column (17) is threadedly connected with a sealing bolt (18), and the sealing bolt (18) is pressed and matched with the adjacent rotating plate (16).

9. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 8 is characterized in that: The second guide plate (9) is fixedly connected with uniformly distributed vortex generators (19), the vortex generators (19) being located on one side of the adjacent second guide plate (9) close to the adjacent second guide tail end (92), and the vortex generators (19) being located at intervals within adjacent spiral fins (3).

10. The energy-saving seamless titanium fin tube for a ship heat exchange unit according to claim 6, characterized in that: It also comprises a micro-based tube (20), the micro-based tube (20) being fixedly connected to the substrate (1), a micro-fin being fixedly connected to the outer side of the micro-based tube (20), the micro-based tube (20) being located between two adjacent and symmetrically distributed circular based tubes (2), and the axis of the micro-based tube (20) being located between two adjacent and symmetrically distributed second drainage tail ends (92).

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