Winding pipe heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a winding pipe heat exchanger which can fully absorb heat energy, improve heat exchange efficiency, facilitate regular cleaning and guarantee heat exchange effect. Comprising an outer pipe, a liquid inlet pipe, a liquid outlet pipe and a top cover, the top cover is installed at the top end of the outer pipe, the top of the top cover is connected with the liquid inlet pipe, and the bottom of the outer pipe is connected with the liquid outlet pipe; the heat exchanger further comprises a heat exchange mechanism, a fixing mechanism, a pressing mechanism and a circulating mechanism, the heat exchange mechanism is installed in the outer pipe, the top cover is installed at the top end of the outer pipe through the fixing mechanism, the pressing mechanism is installed in the top cover and used for limiting and fixing the heat exchange mechanism, and the circulating mechanism is installed on the outer wall of the outer pipe and communicates with the interior of the outer pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a coiled tube heat exchanger. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions. Compared with ordinary shell-and-tube heat exchangers, wound tube heat exchangers have incomparable advantages. Due to their special structure, the flow field is fully developed, there is no dead zone, the structure is compact, and the unit volume has a large heat transfer area. Prior art publication number CN109999619A proposes a wound tube heat exchanger for gas absorption, which is provided with a distribution plate and a uniform distribution device. The distribution plate is transversely arranged in the shell cylinder and located at the upper part of the shell cylinder. A plurality of through holes for the heat exchange tube to pass through are opened on the distribution plate. There is a gap between the inner wall of the through hole and the outer wall of the heat exchange tube that allows the absorption liquid to form a liquid film on the outer wall of the heat exchange tube, so as to reduce the absorption liquid from forming droplets on the outer wall of the heat exchange tube, thereby improving the heat transfer effect of the wound tube heat exchanger. However, when the heat exchanger is performing long-term heat exchange work, a large amount of scale will be generated inside the pipe. If it is not cleaned regularly, the scale will adhere to a large area inside the heat exchanger, which will reduce the heat exchange efficiency of the heat exchanger. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a spiral wound tube heat exchanger which can fully absorb heat energy, improve the efficiency of heat exchange, facilitate regular cleaning, and ensure the heat exchange effect.

[0004] The utility model discloses a wound tube heat exchanger, comprising an outer tube, a liquid inlet pipe, a liquid discharge pipe and a top cover, wherein the top cover is installed at the top end of the outer tube, the top of the top cover is connected to the liquid inlet pipe, and the bottom of the outer tube is connected to the liquid discharge pipe; the utility model also comprises a heat exchange mechanism, a fixing mechanism, a pressing mechanism and a circulation mechanism, wherein the heat exchange mechanism is installed inside the outer tube, the top cover is installed at the top end of the outer tube through the fixing mechanism, the pressing mechanism is installed inside the top cover, the heat exchange mechanism is limited and fixed, and the circulation mechanism is installed on the outer wall of the outer tube and communicated with the inside of the outer tube; the high-temperature medium flows into the outer tube from the liquid inlet pipe, and passes through the heat exchange mechanism The heat exchange mechanism exchanges heat with the fluid in the outer tube. After the temperature drops, the fluid flows out through the discharge pipe. The heat exchange mechanism is limited and fixed by the pressing mechanism to ensure stability during use. The low-temperature fluid is made to flow in the outer tube through the circulation mechanism to increase the flow distance and time as well as the contact area with the heat exchange tube, so that the heat exchange tube can fully absorb heat energy and improve the heat exchange efficiency. At the same time, the heat exchange mechanism is impacted to avoid scaling inside the outer tube. The top cover can be opened on the top of the outer tube through the fixing mechanism, and the heat exchange mechanism can be taken out of the outer tube for easy regular cleaning to ensure the heat exchange effect.

[0005] Preferably, the fixing mechanism includes a sealing ring, multiple connecting seats, multiple fixing studs and multiple lifting rings. The bottom of the top cover is fixedly connected to the sealing ring, and the multiple fixing studs are axially evenly arranged and installed on the upper outer wall of the outer tube through the connecting seat. The sealing ring is provided with a fixing groove matching the fixing stud, and the fixing stud is provided with a fixing nut. Lifting rings are fixedly installed on the left and right sides of the outer wall of the top cover. Unscrewing the fixing nuts to move the fixing studs out of the fixing grooves, connecting the lifting tools with the lifting rings, the top cover can be removed from the top of the outer tube, which is convenient for cleaning the equipment in the outer tube, and convenient for regular cleaning to ensure the heat exchange effect.

[0006] Preferably, the heat exchange mechanism includes a fixed ring plate, a first fixed plate, an inner rod, a heat exchange tube, a guide plate, a second fixed ring plate and a second fixed plate, the fixed ring plate is fixedly mounted on the upper end of the inner wall of the outer tube, the first fixed plate and the second fixed plate are respectively located at the two inner ends of the outer tube, an inner rod is arranged between the first fixed plate and the second fixed plate, the heat exchange tube is wound around the outer wall of the inner rod, a spirally wound guide plate is arranged on the outer wall of the inner rod, the pitch of the guide plate is the same as the pitch of the inner rod, the first fixed plate is located at the top of the fixed ring plate, a sealing ring is arranged between the first fixed plate and the fixed ring plate, the diameter of the second fixed plate is smaller than the first fixed plate, and the second fixed plate is sealingly connected to the second fixed ring plate; the high-temperature medium flows into the outer tube from the liquid inlet pipe and flows out through the liquid discharge pipe. During the flow in the outer tube, the heat exchange tube increases the flow distance and time, and the fluid to be absorbed heat energy can flow in a spiral shape through the guide plate, thereby increasing the contact with the high-temperature medium and fully absorbing the heat energy.

[0007] Preferably, the clamping mechanism includes multiple telescopic rods, multiple retaining rings, multiple clamping plates and multiple springs. The upper parts of the multiple telescopic rods are axially evenly arranged and installed on the inner wall of the top cover, the upper parts of the outer walls of the telescopic rods are fixedly installed with retaining rings, the bottoms of the telescopic rods are fixedly installed with clamping plates, the springs are sleeved on the outer walls of the telescopic rods, and the tops of the springs are connected to the bottoms of the retaining rings, and the tops of the springs are connected to the tops of the clamping plates. When the top cover is installed on the top of the outer tube, the clamping plate is driven to be pressed against the top of the first fixed plate to fix the first fixed plate to ensure stability during use.

[0008] Preferably, the circulation mechanism includes a mounting plate, a circulation pump, an inlet pipe, an input pipe, a valve, an outlet pipe, a plurality of ring pipes, a plurality of nozzles and a plurality of connecting pipes. The mounting plate is fixedly mounted on the lower end of the right wall of the outer pipe, the circulation pump is fixed on the top of the mounting plate, the right end of the circulation pump is connected with the inlet pipe, one side output end of the circulation pump is connected with the input pipe, the output end of the input pipe is communicated with the inside of the outer pipe, a valve is installed on the input pipe, the outlet pipe is fixedly connected to the upper part of the left side wall of the outer pipe, a plurality of ring pipes are evenly arranged and mounted inside the outer pipe, the input end of the ring pipe is connected with the output end on the other side of the circulation pump, a plurality of nozzles are obliquely mounted on the ring pipe, and the plurality of ring pipes are communicated with each other through a plurality of connecting pipes. The circulation pump is started to extract the fluid to be absorbed heat energy through the inlet pipe, input it into the outer pipe through the input pipe, the fluid absorbing heat energy is discharged from the outer pipe through the outlet pipe, so that the low-temperature fluid flows in the outer pipe, the valve is closed, the fluid is input into the ring pipe and sprayed out through the nozzle, so as to avoid scaling inside the outer pipe.

[0009] Preferably, it also includes two support plates and two bases, the two support plates are fixedly installed on the left and right ends of the bottom of the outer tube respectively, the middle part of the support plate is hollowed out, the bottom of the support plate is fixedly connected to the base, and fixing holes are opened at the front and rear ends of the base; the outer tube is supported by the support plates and the base to ensure stability during use, the base can be further installed and fixed through the fixing holes, and the hollow setting of the support plates can reduce the weight of the equipment and facilitate transportation.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the high-temperature medium flows into the outer tube from the liquid inlet pipe, exchanges heat with the fluid in the outer tube through the heat exchange mechanism, and flows out through the liquid discharge pipe after the temperature drops. The heat exchange mechanism is limited and fixed by the clamping mechanism to ensure stability during use. The low-temperature fluid is made to flow in the outer tube through the circulation mechanism, which increases the flow distance and time and the contact area with the heat exchange tube, so that the heat exchange tube can fully absorb heat energy and improve the heat exchange efficiency. At the same time, the heat exchange mechanism is impacted to avoid scaling inside the outer tube. The top cover can be opened on the top of the outer tube through the fixing mechanism, and the heat exchange mechanism can be taken out from the outer tube, which is convenient for regular cleaning and ensures the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a front structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the utility model viewed from above;

[0014] Figure 4 It is a right view structural schematic diagram of the utility model;

[0015] Figure 5It is a front cross-sectional structural schematic diagram of the utility model;

[0016] Markings in the attached drawings: 1. outer tube; 2. liquid inlet pipe; 3. liquid discharge pipe; 4. top cover; 5. sealing ring; 6. connecting seat; 7. fixing stud; 8. fixing nut; 9. lifting ring; 10. fixing ring plate; 11. first fixing plate; 12. inner rod; 13. heat exchange tube; 14. guide plate; 15. second fixing ring plate; 16. second fixing plate; 17. telescopic rod; 18. retaining ring; 19. clamping plate; 20. spring; 21. mounting plate; 22. circulating pump; 23. water inlet pipe; 24. input pipe; 25. valve; 26. water outlet pipe; 27. ring pipe; 28. nozzle; 29. ​​connecting pipe; 30. support plate; 31. base. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0018] Example 1

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a top cover 4 is installed at the top of the outer tube 1, the top of the top cover 4 is connected to a liquid inlet pipe 2, the bottom of the outer tube 1 is connected to a liquid discharge pipe 3, the bottom of the top cover 4 is fixedly connected to a sealing ring 5, a plurality of fixing studs 7 are axially evenly arranged and installed on the upper outer wall of the outer tube 1 through a connecting seat 6, a fixing groove matching the fixing stud 7 is opened on the sealing ring 5, and a fixing nut is provided on the fixing stud 7. A lifting ring 9 is fixedly installed on the left and right sides of the outer wall of the top cover 4, and a fixing ring plate 10 is fixedly installed on the upper end of the inner wall of the outer tube 1. A first fixing plate 11 and a second fixing plate 16 are respectively located at the two ends of the inner part of the outer tube 1, and an inner rod 12 is provided between the first fixing plate 11 and the second fixing plate 16. The heat exchange tube 13 is wound around the outer wall of the inner rod 12, and a spirally wrapped guide plate 14 is provided on the outer wall of the inner rod 12. The pitch of the guide plate 14 is the same as the pitch of the inner rod 12. The first fixing plate 1 1 is located at the top of the fixed ring plate 10, a sealing ring is arranged between the first fixed plate 11 and the fixed ring plate 10, the diameter of the second fixed plate 16 is smaller than the first fixed plate 11, the second fixed plate 16 is sealed and connected with the second fixed ring plate 15, the mounting plate 21 is fixedly mounted on the lower end of the right wall of the outer tube 1, the circulating pump 22 is fixed on the top of the mounting plate 21, the right end of the circulating pump 22 is connected with the water inlet pipe 23, one side output end of the circulating pump 22 is connected with the input pipe 24, the output end of the input pipe 24 is communicated with the inside of the outer tube 1, a valve 25 is installed on the input pipe 24, the water outlet pipe 26 is fixedly connected to the upper part of the left side wall of the outer tube 1, a plurality of ring pipes 27 are evenly arranged and installed inside the outer tube 1, the input end of the ring pipe 27 is connected with the output end of the other side of the circulating pump 22, a plurality of nozzles 28 are obliquely installed on the ring pipe 27, and the plurality of ring pipes 27 are communicated with each other through a plurality of connecting pipes 29;

[0020] The high-temperature medium flows into the outer tube 1 from the liquid inlet pipe 2 and flows out through the liquid discharge pipe 3. During the flow in the outer tube 1, the heat exchange tube 13 increases the flow distance and time. The guide plate 14 can make the fluid to absorb heat energy flow in a spiral shape, increase the contact with the high-temperature medium, and fully absorb heat energy. The circulation pump 22 is started to extract the fluid to absorb heat energy through the water inlet pipe 23 and input it into the outer tube 1 through the input pipe 24. The fluid that absorbs heat energy is discharged from the outer tube 1 through the water outlet pipe 26, so that the low-temperature fluid flows in the outer tube 1. The valve 25 is closed to input the fluid into the annular pipe 27 and spray it out through the nozzle 28 to avoid scaling inside the outer tube 1. The fixing nut 8 is unscrewed to move the fixing stud 7 out of the fixing groove. The lifting tool is connected to the lifting ring 9, and the top cover 4 can be removed from the top of the outer tube 1, which is convenient for cleaning the equipment in the outer tube 1 and regular cleaning to ensure the heat exchange effect.

[0021] Example 2

[0022] like Figure 1 and Figure 4As shown, on the basis of the first embodiment, it also includes a plurality of telescopic rods 17, the upper parts of which are axially evenly arranged and installed on the inner wall of the top cover 4, a retaining ring 18 is fixedly installed on the upper part of the outer wall of the telescopic rod 17, a clamping plate 19 is fixedly installed on the bottom of the telescopic rod 17, a spring 20 is sleeved on the outer wall of the telescopic rod 17, and the top of the spring 20 is connected to the bottom of the retaining ring 18, and the top of the spring 20 is connected to the top of the clamping plate 19, two support plates 30 are respectively fixedly installed at the left and right ends of the bottom of the outer tube 1, the middle part of the support plate 30 is hollowed out, and the bottom of the support plate 30 is fixedly connected to a base 31, and the front and rear ends of the base 31 are provided with fixing holes;

[0023] When the top cover 4 is installed on the top end of the outer tube 1, it drives the clamping plate 19 to be pressed against the top end of the first fixing plate 11, fixes the first fixing plate 11, and ensures stability during use. The outer tube 1 is supported by the support plate 30 and the base 31 to ensure stability during use. The base 31 can be further installed and fixed through the fixing holes. The hollow setting of the support plate 30 can reduce the weight of the equipment and facilitate transportation.

[0024] like Figures 1 to 5 As shown, a wound tube heat exchanger of the utility model supports the outer tube 1 through the support plate 30 and the base 31 when it is working. The high-temperature medium flows into the outer tube 1 from the liquid inlet pipe 2 and flows out through the liquid discharge pipe 3. During the flow in the outer tube 1, the heat exchange tube 13 increases the flow distance and time. The circulation pump 22 is started to extract the fluid to be absorbed heat energy through the water inlet pipe 23 and input it into the outer tube 1 through the input pipe 24. The fluid to be absorbed heat energy can flow in a spiral shape through the guide plate 14 to increase the contact with the high-temperature medium. The fluid absorbing heat energy is discharged from the outer tube 1 through the water outlet pipe 26, so that the low-temperature fluid flows in the outer tube 1. The valve 25 is closed regularly to input the fluid into the annular tube 27 and spray it out through the nozzle 28 to avoid scaling inside the outer tube 1. The fixing nut 8 is unscrewed to move the fixing stud 7 out of the fixing groove. The lifting tool is connected to the lifting ring 9, and the top cover 4 can be removed from the top of the outer tube 1. The equipment in the outer tube 1 can be cleaned regularly.

[0025] The inner rod 12 and the circulating pump 22 of the wound tube heat exchanger of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in the field.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wound tube heat exchanger, comprising an outer tube (1), a liquid inlet tube (2), a liquid discharge tube (3) and a top cover (4), wherein the top cover (4) is installed at the top end of the outer tube (1), the top of the top cover (4) is connected to the liquid inlet tube (2), and the bottom of the outer tube (1) is connected to the liquid discharge tube (3); characterized in that: It also comprises a heat exchange mechanism, a fixing mechanism, a pressing mechanism and a circulation mechanism, wherein the heat exchange mechanism is mounted inside the outer tube (1), the top cover (4) is mounted on the top end of the outer tube (1) via the fixing mechanism, the pressing mechanism is mounted inside the top cover (4) to limit and fix the heat exchange mechanism, and the circulation mechanism is mounted on the outer wall of the outer tube (1) and communicates with the inside of the outer tube (1).

2. A coiled tube heat exchanger according to claim 1, characterized in that: The fixing mechanism comprises a sealing ring (5), a plurality of connecting seats (6), a plurality of fixing studs (7) and a plurality of lifting rings (9); the sealing ring (5) is fixedly connected to the bottom of the top cover (4); the plurality of fixing studs (7) are axially evenly arranged and installed on the upper outer wall of the outer tube (1) through the connecting seats (6); a fixing groove matching the fixing studs (7) is provided on the sealing ring (5); a fixing nut is provided on the fixing studs (7); and lifting rings (9) are fixedly installed on the left and right sides of the outer wall of the top cover (4).

3. The coiled tube heat exchanger according to claim 1, characterized in that: The heat exchange mechanism comprises a fixed ring plate (10), a first fixed plate (11), an inner rod (12), a heat exchange tube (13), a guide plate (14), a second fixed ring plate (15) and a second fixed plate (16); the fixed ring plate (10) is fixedly mounted on the upper end of the inner wall of the outer tube (1); the first fixed plate (11) and the second fixed plate (16) are respectively located at the two ends of the inner wall of the outer tube (1); the inner rod (12) is arranged between the first fixed plate (11) and the second fixed plate (16); the heat exchange tube (13) is provided with a heat exchanger tube (13); ) is wound around the outer wall of the inner rod (12), a spirally wound guide plate (14) is arranged on the outer wall of the inner rod (12), the pitch of the guide plate (14) is the same as the pitch of the inner rod (12), the first fixed plate (11) is located on the top of the fixed ring plate (10), a sealing ring is arranged between the first fixed plate (11) and the fixed ring plate (10), the diameter of the second fixed plate (16) is smaller than that of the first fixed plate (11), and the second fixed plate (16) is sealed and connected to the second fixed ring plate (15).

4. The coiled tube heat exchanger according to claim 1, characterized in that: The clamping mechanism comprises a plurality of telescopic rods (17), a plurality of retaining rings (18), a plurality of clamping plates (19) and a plurality of springs (20). The upper parts of the plurality of telescopic rods (17) are axially evenly arranged and mounted on the inner wall of the top cover (4). The retaining ring (18) is fixedly mounted on the upper part of the outer wall of the telescopic rod (17). The clamping plate (19) is fixedly mounted on the bottom of the telescopic rod (17). The spring (20) is sleeved on the outer wall of the telescopic rod (17), and the top of the spring (20) is connected to the bottom of the retaining ring (18), and the top of the spring (20) is connected to the top of the clamping plate (19).

5. The coiled tube heat exchanger according to claim 1, characterized in that: The circulation mechanism comprises a mounting plate (21), a circulation pump (22), a water inlet pipe (23), an input pipe (24), a valve (25), a water outlet pipe (26), a plurality of ring pipes (27), a plurality of nozzles (28) and a plurality of connecting pipes (29). The mounting plate (21) is fixedly mounted on the lower end of the right wall of the outer pipe (1), the circulation pump (22) is fixed on the top of the mounting plate (21), the right end of the circulation pump (22) is connected to the water inlet pipe (23), and one side output end of the circulation pump (22) is connected to the input pipe (24). The outer tube (22) is provided with a plurality of ring tubes (27) arranged evenly in an arrangement inside the outer tube (1), the input end of the ring tube (27) being connected to the output end of the other side of the circulating pump (22), the output end of the input tube (24) being connected to the inside of the outer tube (1), the valve (25) being installed on the input tube (24), the outlet tube (26) being fixedly connected to the upper part of the left side wall of the outer tube (1), the input end of the ring tube (27) being connected to the output end of the other side of the circulating pump (22), the ring tube (27) being obliquely installed with a plurality of nozzles (28), and the plurality of ring tubes (27) being connected to each other via a plurality of connecting tubes (29).

6. The coiled tube heat exchanger according to claim 1, characterized in that: It also comprises two support plates (30) and two bases (31), the two support plates (30) being fixedly mounted on the left and right ends of the bottom of the outer tube (1), respectively, the middle portion of the support plate (30) being hollowed out, the bottom of the support plate (30) being fixedly connected to the base (31), and fixing holes being provided at the front and rear ends of the base (31).

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