Enhanced internal and external thread shell and tube heat exchanger

Abstract

The utility model discloses an enhanced internal and external thread shell and tube heat exchanger, which relates to the technical field of heat exchangers and comprises a heat exchanger shell, tube boxes are movably mounted at two ends of the heat exchanger shell, tube plates are arranged between the heat exchanger shell and the tube boxes, and internal and external thread spiral tubes are movably mounted on the tube plates. Supporting legs are fixedly installed on the two sides of the bottom of the heat exchanger shell. According to the utility model, through the arrangement of structures such as the internal and external thread spiral pipe, the internal and external thread spiral pipe adopts an internal and external thread form, so that the heat exchange area is increased and the heat exchanger is more compact on the premise of not increasing the occupied area, and the internal and external threads of the internal and external thread spiral pipe can change the flowing state of a heat exchange medium and obviously increase the Reynolds number of fluid; the internal threads and the external threads of the internal-external thread spiral pipe are distributed in a staggered mode during machining, the threads on the inner side are machined, the external threads on the outer side can be machined, and the spiral pipe can also be achieved in the mode of welding spiral fins.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a reinforced internal and external threaded tube-in-tube heat exchanger. Background Art

[0002] The internal and external threaded tube shell and tube heat exchanger replaces the plain tube bundle with a threaded tube bundle with internal and external threads. The threaded tube can be rolled by a lathe or a special machine tool. This type of heat exchanger has a compact structure, is energy-saving, saves steel, occupies less space, and can increase the heat exchange area by 1.5 to 2 times, and the total heat transfer coefficient can be increased by about twice.

[0003] In the prior art, most existing heat exchangers are shell-and-tube heat exchangers, which conduct heat conduction and exchange through the different temperature differences of the interface fluids on the tube side and the shell side. However, most of them are in-line tube heat exchangers, the contact area is not large enough, and the liquid in the tube is only in contact with the tube wall for heat exchange, the temperature of the liquid in the tube is not fully utilized, the single heat exchange tube has a small specific surface area, the heat exchanger occupies a large area, the medium in the tube is in a laminar state, and the heat exchange efficiency is low. Therefore, it is necessary to provide an internally threaded spiral tube heat exchanger with high heat exchange efficiency and simple structure, so an enhanced internal and external spiral shell-and-tube heat exchanger is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a reinforced internal and external threaded tube-in-tube heat exchanger to solve the problems proposed in the above background technology that a single heat exchange tube has a small specific surface area, the heat exchanger occupies a large area, the medium in the tube is in a laminar flow state, and the heat exchange efficiency is low.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reinforced internal and external threaded tube-in-tube heat exchanger, comprising a heat exchanger shell, both ends of the heat exchanger shell are movably mounted with tube boxes, a tube sheet is provided between the heat exchanger shell and the tube box, internal and external threaded spiral tubes are movably mounted on the tube sheet, a mounting plate is fixedly mounted on the bottom of the heat exchanger shell, a drain port is fixedly mounted on the bottom of one tube box, a tube side medium inlet is fixedly mounted on the bottom of one tube box, a tube side medium outlet is fixedly mounted on the top of the other tube box, a fixing block is fixedly mounted on the bottom of the mounting plate, and a plurality of universal wheels are fixedly mounted on the bottom of the fixing block.

[0006] Furthermore, a shell-side medium inlet is fixedly installed on one side of the top of the heat exchanger shell, and a shell-side medium outlet is fixedly installed on one side of the bottom of the heat exchanger shell.

[0007] Furthermore, a shell-side exhaust port is fixedly installed on one side of the top of the heat exchanger shell away from the shell-side medium inlet, and a tube-side exhaust port is fixedly installed on the top of one side of the tube box.

[0008] Furthermore, a support plate is slidably mounted on the bottom side of the fixed block, and a plurality of support legs are fixedly mounted on the bottom of the support plate.

[0009] Furthermore, fixed shafts are fixedly installed on both sides of the fixed block and the support plate, sliding grooves are opened in the inner walls of the fixed block and the support plate, and sliding rods are slidably installed inside the sliding grooves.

[0010] Furthermore, an inclined rod is rotatably mounted on the fixed shaft, one end of the inclined rod away from the fixed shaft is rotatably connected to the sliding rod, and a same circular shaft is rotatably mounted between the two inclined rods.

[0011] Furthermore, a threaded rod is rotatably installed in the inner wall of the fixed block, one end of the threaded rod passes through the inner wall of the sliding rod and extends to the inner wall of one side of the fixed block, the threaded rod is threadedly connected to the sliding rod, the other end of the threaded rod extends to the outside of the fixed block, and a handle is fixedly installed on one end of the threaded rod.

[0012] Furthermore, the inner surface of the internal and external threaded spiral tube is provided with a spiral groove with a depth of 0.5-1mm and a width of 2-3mm, and the outer surface of the internal and external threaded spiral tube is provided with a spiral fin with a thickness of 0.5-1mm and a height of 2-3mm.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0014] In the utility model, by setting structures such as internal and external threaded spiral tubes, the internal and external threaded spiral tubes adopt the form of internal and external threads, which increases the heat exchange area without increasing the floor space, making the heat exchanger more compact. The internal and external threads of the internal and external threaded spiral tubes can change the flow state of the heat exchange medium and significantly increase the Reynolds number of the fluid. The internal and external threads of the internal and external threaded spiral tubes are staggered during processing. The inner threads are machined, and the outer threads can be machined into outer threads, or they can be achieved by welding spiral fins.

[0015] In the utility model, through the arrangement of structures such as universal wheels, inclined rods, and threaded rods, multiple universal wheels also make it easy for the operator to rotate the heat exchanger shell. Then the operator holds the handle and rotates it, which will cause the threaded rod to rotate, and then the two inclined rods will rotate with the circular axis as the axis, so that the support plate drives the multiple support legs to contact the ground, which can fix the heat exchanger shell and also adjust the height of the heat exchanger shell, which is convenient for the installation of the heat exchanger shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the side plan structure of an enhanced internal and external threaded tube-in-tube heat exchanger proposed by the utility model;

[0017] Figure 2This is a schematic diagram of the mounting plate structure of a reinforced internal and external threaded tube-and-tube heat exchanger proposed by the utility model;

[0018] Figure 3 The utility model provides a schematic diagram of the cross-sectional structure of a fixing block of a reinforced internal and external threaded shell and tube heat exchanger.

[0019] In the figure: 1. heat exchanger shell; 2. tube sheet; 3. internal and external threaded spiral tube; 4. tube box; 5. mounting plate; 6. tube side medium inlet; 7. tube side medium outlet; 8. shell side medium inlet; 9. shell side medium outlet; 10. shell side exhaust port; 11. tube side exhaust port; 12. drain port; 13. fixing block; 14. universal wheel; 15. support plate; 16. fixed shaft; 17. slide groove; 18. slide rod; 19. inclined rod; 20. round shaft; 21. support leg; 22. threaded rod; 23. handle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A reinforced internal and external threaded tube-in-tube heat exchanger comprises a heat exchanger shell 1, both ends of the heat exchanger shell 1 are movably mounted with tube boxes 4, a tube sheet 2 is arranged between the heat exchanger shell 1 and the tube box 4, an internal and external threaded spiral tube 3 is movably mounted on the tube sheet 2, a mounting plate 5 is fixedly mounted on the bottom of the heat exchanger shell 1, a drain port 12 is fixedly mounted on the bottom of the tube box 4 on one side, a tube side medium inlet 6 is fixedly mounted on the bottom of the tube box 4 on one side, and a tube side medium outlet 7 is fixedly mounted on the top of the tube box 4 on the other side, a fixing block 13 is fixedly mounted on the bottom of the mounting plate 5, and a plurality of universal wheels 14 are fixedly mounted on the bottom of the fixing block 13. When an operator pushes the heat exchanger shell 1, the plurality of universal wheels 14 will rotate, and the heat exchanger shell 1 can be placed at a designated location. Then, the operator holds and rotates the handle 23, which will make the screws The threaded rod 22 rotates, so that the threaded rod 22 drives the sliding rod 18 to slide inside the sliding groove 17, and then the two inclined rods 19 rotate with the circular shaft 20 as the axis, so that the support plate 15 drives multiple supporting legs 21 to contact the ground, and then the fixing block 13 drives multiple universal wheels 14 away from the ground, so as to play a supporting and fixing role. During heat exchange, one medium enters the inside of the pipe box 4 on one side from the tube side medium inlet 6, and then will be discharged through the tube side medium outlet 7, and the other medium enters the inside of the heat exchanger shell 1 from the shell side medium inlet 8, flows in the inside of the heat exchanger shell 1, and then is discharged from the shell side medium outlet 9. The shell side exhaust port 10 is used for exhaust of the heat exchanger shell 1, the tube side exhaust port 11 is used for exhaust of the pipe box 4, and the drain port 12 can discharge the liquid.

[0022] Furthermore, a shell side medium inlet 8 is fixedly installed on one side of the top of the heat exchanger shell 1, and a shell side medium outlet 9 is fixedly installed on one side of the bottom of the heat exchanger shell 1. A medium enters the interior of the heat exchanger shell 1 through the shell side medium inlet 8 and is then discharged from the shell side medium outlet 9.

[0023] Furthermore, a shell side exhaust port 10 is fixedly installed on the side of the top of the heat exchanger shell 1 away from the shell side medium inlet 8, and a tube side exhaust port 11 is fixedly installed on the top of one side of the pipe box 4. The shell side exhaust port 10 is used for exhausting the inside of the heat exchanger shell 1, and the tube side exhaust port 11 is used for exhausting the inside of the pipe box 4.

[0024] Furthermore, a support plate 15 is slidably installed on the bottom side of the fixed block 13, and a plurality of support legs 21 are fixedly installed on the bottom of the support plate 15. When the support plate 15 descends, the support legs 21 will contact the ground, and then the fixed block 13 will drive the plurality of support legs to rise. The support legs 21 can fix and support the heat exchanger shell 1.

[0025] Furthermore, fixed shafts 16 are fixedly installed on both sides of the fixed block 13 and the support plate 15, and sliding grooves 17 are opened in the inner walls of the fixed block 13 and the support plate 15. A sliding rod 18 is slidably installed inside the sliding groove 17. When the sliding rod 18 moves, it will drive the inclined rod 19 to move, and the sliding rod 18 will also slide inside the sliding groove 17.

[0026] Furthermore, an inclined rod 19 is rotatably installed on the fixed shaft 16, and one end of the inclined rod 19 away from the fixed shaft 16 is rotatably connected to the sliding rod 18. The same circular shaft 20 is rotatably installed between the two inclined rods 19. When the sliding rod 18 drives the inclined rod 19 to move, the two inclined rods 19 will rotate with the circular shaft 20 as the axis, and then the support plate 15 will drive the multiple support legs 21 to descend, which can play a role of fixing and supporting, and the height of the heat exchanger shell 1 can also be adjusted.

[0027] Furthermore, a threaded rod 22 is rotatably installed in the inner wall of the fixed block 13, one end of the threaded rod 22 passes through the inner wall of the sliding rod 18 and extends to the inner wall of one side of the fixed block 13, the threaded rod 22 is threadedly connected to the sliding rod 18, and the other end of the threaded rod 22 extends to the outside of the fixed block 13, and a handle 23 is fixedly installed at one end of the threaded rod 22. When the operator holds and turns the handle 23, the threaded rod 22 will rotate, and then the threaded rod 22 will drive the sliding rod 18 to slide inside the sliding groove 17.

[0028] Furthermore, the inner surface of the internal and external threaded spiral tube 3 is provided with a spiral groove with a depth of 0.5-1mm and a width of 2-3mm, and the outer surface of the internal and external threaded spiral tube 3 is provided with a spiral fin with a thickness of 0.5-1mm and a height of 2-3mm. The inner surface of the internal and external threaded spiral tube 3 is provided with a spiral groove with a depth of 0.5-1mm and a width of 2-3mm. The spiral grooves in the tube can also increase the heat exchange area and enhance the heat exchange effect. The outer surface of the internal and external threaded spiral tube 3 is provided with a spiral fin with a thickness of 0.5-1mm and a height of 2-3mm. In addition to increasing the heat exchange area, the external spiral fin can also transform the fluid outside the heat exchange tube from laminar flow to turbulent flow, thereby enhancing the heat exchange effect.

[0029] Working principle of this utility model:

[0030] When the operator pushes the heat exchanger housing 1, the multiple universal wheels 14 will rotate, and the heat exchanger housing 1 can be placed at a designated location. Then, the operator holds and rotates the handle 23, which will rotate the threaded rod 22, and then the threaded rod 22 drives the slide rod 18 to slide inside the slide groove 17, and then the two inclined rods 19 will rotate with the circular shaft 20 as the axis, so that the support plate 15 drives the multiple support legs 21 to contact the ground, and then the fixing block 13 drives the multiple universal wheels 14 away from the ground, so that it can play a supporting and fixing role, that is, the heat exchanger housing 1 can be placed at a designated location. When heat exchange is performed, a The medium enters the interior of the tube box 4 on one side from the tube side medium inlet 6, and then will be discharged through the tube side medium outlet 7. Another medium enters the interior of the heat exchanger shell 1 from the shell side medium inlet 8, flows in the interior of the heat exchanger shell 1, and then is discharged from the shell side medium outlet 9. The shell side exhaust port 10 is used for exhausting the heat exchanger shell 1, the tube side exhaust port 11 is used for exhausting the tube box 4, and the drain port 12 can discharge the liquid. The internal and external threaded spiral tube 3 adopts the internal and external thread form, which increases the heat exchange area without increasing the floor space, making the heat exchanger more compact. The internal and external threads can change the flow state of the heat exchange medium and significantly increase the fluid Reynolds number.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reinforced internal and external threaded tube-in-tube heat exchanger, comprising a heat exchanger shell (1), characterized in that: Both ends of the heat exchanger shell (1) are movably mounted with tube boxes (4); a tube sheet (2) is provided between the heat exchanger shell (1) and the tube box (4); internal and external threaded spiral tubes (3) are movably mounted on the tube sheet (2); a mounting plate (5) is fixedly mounted on the bottom of the heat exchanger shell (1); a liquid discharge port (12) is fixedly mounted on the bottom of the tube box (4) on one side; a tube-side medium inlet (6) is fixedly mounted on the bottom of the tube box (4) on one side; a tube-side medium outlet (7) is fixedly mounted on the top of the tube box (4) on the other side; a fixing block (13) is fixedly mounted on the bottom of the mounting plate (5); and a plurality of universal wheels (14) are fixedly mounted on the bottom of the fixing block (13).

2. The reinforced internal and external threaded tube-in-tube heat exchanger according to claim 1, characterized in that: A shell-side medium inlet (8) is fixedly mounted on one side of the top of the heat exchanger shell (1), and a shell-side medium outlet (9) is fixedly mounted on one side of the bottom of the heat exchanger shell (1).

3. The reinforced internal and external threaded tube-in-tube heat exchanger according to claim 1, characterized in that: A shell-side exhaust port (10) is fixedly mounted on the top of the heat exchanger shell (1) on one side away from the shell-side medium inlet (8), and a tube-side exhaust port (11) is fixedly mounted on the top of one side tube box (4).

4. The enhanced internal and external threaded tube heat exchanger according to claim 1, characterized in that: A support plate (15) is slidably mounted on the bottom side of the fixed block (13), and a plurality of support legs (21) are fixedly mounted on the bottom of the support plate (15).

5. The enhanced internal and external threaded tube-in-tube heat exchanger according to claim 1, characterized in that: Fixed shafts (16) are fixedly mounted on both sides of the fixed block (13) and the support plate (15), and sliding grooves (17) are provided in the inner walls of the fixed block (13) and the support plate (15), and sliding rods (18) are slidably mounted inside the sliding grooves (17).

6. The enhanced internal and external threaded tube-in-tube heat exchanger according to claim 5, characterized in that: An inclined rod (19) is rotatably mounted on the fixed shaft (16); one end of the inclined rod (19) away from the fixed shaft (16) is rotatably connected to the sliding rod (18); and a common circular shaft (20) is rotatably mounted between the two inclined rods (19).

7. The enhanced internal and external threaded tube-in-tube heat exchanger according to claim 1, characterized in that: A threaded rod (22) is rotatably mounted in the inner wall of the fixed block (13); one end of the threaded rod (22) penetrates the inner wall of the sliding rod (18) and extends to the inner wall of one side of the fixed block (13); the threaded rod (22) is threadedly connected to the sliding rod (18); the other end of the threaded rod (22) extends to the outside of the fixed block (13); and a handle (23) is fixedly mounted on one end of the threaded rod (22).

8. The enhanced internal and external threaded tube-in-tube heat exchanger according to claim 1, characterized in that: The inner surface of the internal and external threaded spiral tube (3) is provided with a spiral groove with a depth of 0.5-1mm and a width of 2-3mm, and the outer surface of the internal and external threaded spiral tube (3) is provided with a spiral fin with a thickness of 0.5-1mm and a height of 2-3mm.

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