Adjustable high-temperature-resistant heat exchanger

By introducing fan preheating fluid and limit sleeve buffer vibration into the heat exchanger, the problem of existing heat exchangers being easily damaged under high temperature differences is solved, and the high temperature resistance and use effect are improved.

CN222364465UActive Publication Date: 2025-01-17HANGZHOU JINMAO REFRIGERATION EQUIP CO LTD
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Patent Information

Application Number
CN202421142183.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-23
Publication Date
2025-01-17
Estimated Expiration
2034-05-23

AI Technical Summary

Technical Problem

Existing heat exchangers are prone to deformation and damage due to thermal stress under high temperature differences, and the impact force of cold fluid causes vibration of the heat flow pipeline and increased stress at the connection area, resulting in leakage.

Method used

An adjustable high-temperature heat exchanger is designed, using support seat, housing, heat exchange pipe, fan, limit sleeve and buffer sleeve, and vibration is buffered through fan preheating fluid, limit sleeve and buffer sleeve. Reduce the stress at the connection parts between the heat flow tube and the baffle plate, improve high temperature resistance and use effect.

Benefits of technology

It effectively avoids deformation and damage caused by thermal stress, reduces vibration stress caused by cold fluid impact, and improves the high temperature resistance and use effect of the heat exchanger.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of heat exchangers, in particular to an adjustable high-temperature-resistant heat exchanger which comprises a heat exchange cylinder, supporting seats are installed at the two ends of the bottom of the heat exchange cylinder, a shell is installed at the top of the heat exchange cylinder, a first heat exchange pipe is installed in the shell, and the two ends of the first heat exchange pipe penetrate through the shell. A first liquid inlet pipe is connected to one end of the first heat exchange pipe, a first conveying pipe is installed at the other end of the first heat exchange pipe, the tail end of the first conveying pipe communicates with the interior of the heat exchange cylinder through a second conveying pipe, at least one air inlet is formed in the top of the shell, and a fan is installed in each air inlet through a fixing frame. Pre-heat-exchange treatment can be conducted on the hot fluid through the fan and the first heat exchange pipe, the temperature of the hot fluid is adjusted to the preset temperature according to needs, the situation that the heat exchange cylinder is deformed and damaged due to thermal stress caused by the fact that the temperature difference between the hot fluid and the cold fluid is too large is avoided, and the high-temperature-resistant effect is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to an adjustable high-temperature resistant 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. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions.

[0003] When the heat exchanger is in use, the hot fluid is passed into the hot flow pipe of the heat exchanger, and then the cold fluid is transported to the inside of the heat exchanger, so that the hot flow pipe is immersed in the cold fluid to complete the heat exchange between the hot fluid and the cold fluid. However, the structural materials of the existing heat exchanger are affected by thermal expansion and contraction. When the temperature difference between the hot fluid and the cold fluid is too large, the heat exchanger is easily deformed and damaged by excessive thermal stress. In addition, when in use, since the cold fluid keeps flowing, the cold fluid will generate impact force on the hot flow pipe during the flow process, causing the hot flow pipe to vibrate. Since the existing hot flow pipe is generally welded and fixed to the tube sheet box baffle inside the heat exchanger, the hot flow pipe will increase the stress at the connection part with the tube sheet and the baffle when vibrating, causing the hot flow pipe to be damaged and leak, and the use effect is poor. To this end, we propose an adjustable high temperature resistant heat exchanger. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose an adjustable high-temperature resistant heat exchanger.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable high-temperature resistant heat exchanger is designed, including a heat exchange tube, both ends of the bottom of the heat exchange tube are equipped with support seats, a shell is installed on the top of the heat exchange tube, a first heat exchange tube is installed inside the shell, both ends of the first heat exchange tube pass through the shell, and one end of the first heat exchange tube is connected to a first liquid inlet pipe, and the other end of the first heat exchange tube is equipped with a first delivery pipe, and the end of the first delivery pipe is connected to the inside of the heat exchange tube through the second delivery pipe;

[0006] At least one air inlet is provided on the top of the shell, a fan is installed inside each air inlet through a fixing frame, the fan is located above the first heat exchange tube, and an exhaust pipe is installed on one side of the shell;

[0007] Both ends of the heat exchange tube are installed with mounting plates, and a plurality of second heat exchange tubes are installed in parallel between the two mounting plates. Both ends of each second heat exchange tube pass through the mounting plates. A partition plate is installed on the side of one of the mounting plates, and the edge of the partition plate is fixed on the inner surface of the heat exchange tube. The end of the second delivery tube is located above the partition plate. A second discharge pipe is installed at the bottom of the heat exchange tube near one end of the partition plate.

[0008] A plurality of baffles are equidistantly arranged between the two mounting plates, the edge of each baffle is fixed on the inner wall of the heat exchange tube, and there is a gap between one side of each baffle and the heat exchange tube, and two adjacent baffles are staggered, and each second heat exchange tube runs through the baffle;

[0009] Several pairs of limiting sleeves matching the second heat exchange tubes are provided on both sides of each baffle plate and mounting plate, each pair of limiting sleeves is sleeved on the corresponding second heat exchange tube, and a buffer sleeve is installed on the inner surface of each limiting sleeve, which is sleeved on the second heat exchange tube and fits with the gap of the second heat exchange tube.

[0010] Preferably, the first heat exchange tube is arranged in an "S" shape or a serpentine shape.

[0011] Preferably, a plurality of heat dissipation fins are installed on the side surfaces of the first heat exchange tube, and the heat dissipation fins are in an annular sheet structure.

[0012] Preferably, adjacent ends of each pair of limit sleeves are extended with a surrounding edge, and a plurality of connecting bolts are equidistantly provided on the side of one of the surrounding edges, and the ends of the connecting bolts extend to the other side of the corresponding mounting plate and the baffle respectively, and the ends of the connecting bolts pass through the other surrounding edge, and the connecting bolts are fixedly connected to the other surrounding edge by a connecting nut.

[0013] Preferably, the ends of the inner surfaces of each pair of limiting sleeves that are away from each other are both configured as arc surfaces.

[0014] Preferably, a second liquid inlet pipe is installed at one end of the top of the heat exchange tube, and a first discharge pipe is installed at the other end of the bottom of the heat exchange tube, and there is a distance between the second liquid inlet pipe and the first discharge pipe.

[0015] The design scheme proposed by the utility model has the following beneficial effects during application:

[0016] 1. The hot fluid can be pre-heated by the fan and the first heat exchange tube, and the temperature of the hot fluid can be adjusted to a preset temperature as needed to avoid deformation and damage of the heat exchange tube due to thermal stress caused by the large temperature difference between the hot fluid and the cold fluid, thereby improving the high temperature resistance effect.

[0017] 2. The limit sleeve and the buffer sleeve can buffer the vibration caused by the impact of the cold fluid on the second heat exchange tube, reduce the stress at the connection between the second heat exchange tube and the baffle plate and the mounting plate, prevent the connection between the second heat exchange tube and the baffle plate and the mounting plate from damage and leakage, and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2It is a top cross-sectional view of the shell structure of the utility model;

[0020] Figure 3 The structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 It is a side sectional view of the heat exchange tube structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the limiting sleeve and the second heat exchange tube of the utility model.

[0023] In the figure: 1. support base; 2. first discharge pipe; 3. first liquid inlet pipe; 4. shell; 5. air inlet; 6. fan; 7. exhaust pipe; 8. second liquid inlet pipe; 9. first delivery pipe; 10. second delivery pipe; 11. second discharge pipe; 12. first heat exchange tube; 13. cooling fins; 14. second heat exchange tube; 15. mounting plate; 16. partition plate; 17. heat exchange tube; 18. baffle; 19. limit sleeve; 20. surrounding edge; 21. buffer sleeve; 22. connecting bolts; 23. connecting nuts. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1-Figure 5 , an adjustable high-temperature resistant heat exchanger, including a heat exchange tube 17, a shell 4 is installed on the top of the heat exchange tube 17, a first heat exchange tube 12 is installed inside the shell 4, both ends of the first heat exchange tube 12 pass through the shell 4, and one end of the first heat exchange tube 12 is connected to the first liquid inlet pipe 3, and the other end of the first heat exchange tube 12 is installed with a first delivery pipe 9, the end of the first delivery pipe 9 is connected to the inside of the heat exchange tube 17 through the second delivery pipe 10, the external hot fluid can be transported to the first heat exchange tube 12 through the first liquid inlet pipe 3 for pre-heat exchange treatment, and the circulation after pre-heat exchange can be transported to the heat exchange tube 17 through the first delivery pipe 9 and the second delivery pipe 10 for heat exchange treatment, so that the temperature difference between the hot fluid and the cold fluid can be reduced, and the heat exchange tube 17 can be prevented from being damaged by excessive thermal stress.

[0026] It should be noted that if Figure 2 As shown, the first heat exchange tube 12 is arranged in an "S" shape or a serpentine shape, which can increase the length of the first heat exchange tube 12 in the shell 4, thereby extending the flow time of the hot fluid in the first heat exchange tube 12, increasing the pre-heat exchange efficiency, and reducing the impact of the high-temperature hot fluid on the heat exchange tube 17 during actual use.

[0027] like Figure 1 As shown, at least one air inlet 5 is provided on the top of the shell 4, and a fan 6 is installed inside each air inlet 5 through a fixing frame. The fan 6 is located above the first heat exchange tube 12, and an exhaust duct 7 is installed on one side of the shell 4. When the temperature difference between the hot fluid and the cold fluid is too large, the staff can control the fan 6 to work, and the fan 6 blows the outside low-temperature air into the shell 4 to pre-exchange the hot fluid flowing in the first heat exchange tube 12, thereby reducing the temperature difference between the hot fluid and the cold fluid and improving the high temperature resistance of the heat exchanger.

[0028] It should be noted that if Figure 3 As shown, a plurality of heat dissipation fins 13 are installed on the side surfaces of the first heat exchange tube 12. The heat dissipation fins 13 are in an annular sheet structure, which can increase the contact area between the first heat exchange tube 12 and the external air and improve the heat exchange efficiency.

[0029] like Figure 3 As shown, mounting plates 15 are installed at both ends of the heat exchange tube 17, and a number of second heat exchange tubes 14 are installed in parallel between the two mounting plates 15. Both ends of each second heat exchange tube 14 pass through the mounting plates 15. A partition plate 16 is installed on the side of one of the mounting plates 15. The edge of the partition plate 16 is fixed on the inner surface of the heat exchange tube 17, and the end of the second delivery tube 10 is located above the partition plate 16. A second discharge pipe 11 is installed at the bottom of the heat exchange tube 17 near one end of the partition plate 16. The partition plate 16 can separate the hot fluid transported by the second delivery pipe 10, so that the hot fluid can flow along the second heat exchange tube 14 above the partition plate 16 to the other end of the heat exchange tube 17, and flow back along the second heat exchange tube 14 located below the partition plate 16 to the end of the heat exchange tube 17 near the partition plate 16, and be discharged from the second discharge pipe 11.

[0030] like Figure 1 As shown, a second liquid inlet pipe 8 is installed at one end of the top of the heat exchange tube 17, and a first discharge pipe 2 is installed at the other end of the bottom of the heat exchange tube 17. There is a distance between the second liquid inlet pipe 8 and the first discharge pipe 2. The staff can transport the cold fluid into the heat exchange tube 17 through the second liquid inlet pipe 8, so that the cold fluid can flow over the second heat exchange tube 14. The hot fluid exchanges heat with the cold fluid while flowing in the second heat exchange tube 14, and then the cold fluid can be discharged from the first discharge pipe 2.

[0031] like Figure 4As described above, a number of baffles 18 are equidistantly arranged between the two mounting plates 15, the edge of each baffle 18 is fixed on the inner wall of the heat exchange tube 17, and there is a distance between one side of each baffle 18 and the heat exchange tube 17, and two adjacent baffles 18 are staggered, and each second heat exchange tube 14 passes through the baffle 18. When the cold fluid is transported into the heat exchange tube 17, the baffle 18 divides the inside of the heat exchange tube 17 into a number of interconnected spaces, which can increase the flow rate of the cold fluid inside the heat exchange tube 17 and improve the heat exchange effect.

[0032] like Figure 5 As shown, a plurality of pairs of limit sleeves 19 matching the second heat exchange tube 14 are provided on both sides of each baffle plate 18 and the mounting plate 15, and each pair of limit sleeves 19 is sleeved on the corresponding second heat exchange tube 14, and a buffer sleeve 21 is installed on the inner surface of each limit sleeve 19, and the buffer sleeve 21 is sleeved on the second heat exchange tube 14 and fits with the second heat exchange tube 14 gap. The buffer sleeve 21 is made of foam or other high-temperature resistant buffer materials. In actual use, the cold fluid will impact the baffle plate 18 and the second heat exchange tube 14 while flowing in the heat exchange tube 17, causing the second heat exchange tube 14 to vibrate. The limit sleeve 19 can increase the connection area between the baffle plate 18, the mounting plate 15 and the second heat exchange tube 14, and the buffer sleeve 21 can buffer the second heat exchange tube 14, so that the vibration stress between the second heat exchange tube 14, the baffle plate 18 and the mounting plate 15 can be reduced, thereby avoiding damage and leakage of the second heat exchange tube 14.

[0033] like Figure 5 As shown, adjacent ends of each pair of limit sleeves 19 are extended with a surrounding edge 20, and the side of one of the surrounding edges 20 is equidistantly provided with a plurality of connecting bolts 22, and the ends of the connecting bolts 22 extend to the other side of the corresponding mounting plate 15 and the baffle plate 18 respectively, and the ends of the connecting bolts 22 pass through the other surrounding edge 20, and the connecting bolts 22 are fixedly connected to the other surrounding edge 20 by connecting nuts 23. During installation, after the same pair of limit sleeves 19 are put on the second heat exchange tube 14, they can be fixed to the corresponding baffle plate 18 and the mounting plate 15 by the cooperation of the connecting bolts 22 and the connecting nuts 23, and are firmly fixed.

[0034] Specifically, when the utility model is in use, the staff transports the hot fluid to the first heat exchange tube 12 through the first liquid inlet pipe 3, and transports the cold fluid to the heat exchange tube 17 through the second liquid inlet pipe 8. When the temperature difference between the hot fluid and the cold fluid is too large, the staff controls the fan 6 to work, and the fan 6 blows the external low-temperature air to the surface of the first heat exchange tube 12, and pre-heat exchanges the hot fluid flowing in the first heat exchange tube 12. The generated high-temperature gas can be discharged through the exhaust pipe 7. The preliminarily cooled hot fluid is then transported to the heat exchange tube 17 through the first delivery pipe 9 and the second delivery pipe 10, and is transported to the other end of the heat exchange tube 17 along the second heat exchange tube 14 located above the partition plate 16, and then flows back to the initial end inside the heat exchange tube 17 along the second heat exchange tube 14 located below the partition plate 16. The hot fluid exchanges heat with the cold fluid while flowing in the second heat exchange tube 14. Then the cold fluid can be discharged along the first discharge pipe 2, and the cooled hot fluid is discharged through the second discharge pipe 11.

[0035] Furthermore, Figure 5 As shown, the ends of the inner surfaces of each pair of limiting sleeves 19 that are away from each other are set as arc surfaces, which can reduce the stress between the edge of the limiting sleeves 19 and the second heat exchange tube 14, and avoid damage to the contact area between the second heat exchange tube 14 and the edge of the limiting sleeves 19 during the vibration of the second heat exchange tube 14.

[0036] It should be noted that support seats 1 are installed at both ends of the bottom of the heat exchange tube 17, and the heat exchange tube 17 can be supported by the support seats 1 so that the bottom of the heat exchange tube 17 is off the ground, thereby ensuring that the first discharge pipe 2 and the second discharge pipe 11 will not collide with the ground.

[0037] 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. An adjustable high temperature resistant heat exchanger, comprising a heat exchange tube (17), characterized in that: Support seats (1) are installed at both ends of the bottom of the heat exchange tube (17), a shell (4) is installed on the top of the heat exchange tube (17), a first heat exchange tube (12) is installed inside the shell (4), both ends of the first heat exchange tube (12) pass through the shell (4), one end of the first heat exchange tube (12) is connected to the first liquid inlet tube (3), the other end of the first heat exchange tube (12) is installed with a first delivery tube (9), and the end of the first delivery tube (9) is connected to the inside of the heat exchange tube (17) through a second delivery tube (10); At least one air inlet (5) is provided on the top of the shell (4), a fan (6) is installed inside each air inlet (5) via a fixing frame, the fan (6) is located above the first heat exchange tube (12), and an exhaust pipe (7) is installed on one side of the shell (4); Both ends of the heat exchange tube (17) are installed with mounting plates (15), a plurality of second heat exchange tubes (14) are installed in parallel between the two mounting plates (15), both ends of each second heat exchange tube (14) pass through the mounting plates (15), a partition plate (16) is installed on the side of one of the mounting plates (15), the edge of the partition plate (16) is fixed on the inner surface of the heat exchange tube (17), and the end of the second delivery tube (10) is located above the partition plate (16), and a second discharge pipe (11) is installed at the bottom of the heat exchange tube (17) near one end of the partition plate (16); A plurality of baffles (18) are equidistantly arranged between the two mounting plates (15), the edge of each baffle (18) is fixed on the inner wall of the heat exchange tube (17), and a distance exists between one side of each baffle (18) and the heat exchange tube (17), and two adjacent baffles (18) are arranged alternately, and each second heat exchange tube (14) passes through the baffle (18); A plurality of pairs of limiting sleeves (19) matching the second heat exchange tube (14) are provided on both sides of each baffle plate (18) and mounting plate (15); each pair of limiting sleeves (19) is sleeved on the corresponding second heat exchange tube (14); and a buffer sleeve (21) is installed on the inner surface of each limiting sleeve (19); the buffer sleeve (21) is sleeved on the second heat exchange tube (14) and is clearance-matched with the second heat exchange tube (14).

2. The adjustable high temperature resistant heat exchanger according to claim 1, characterized in that: The first heat exchange tube (12) is arranged in an "S" shape or a serpentine shape.

3. The adjustable high temperature resistant heat exchanger according to claim 2, characterized in that: A plurality of heat dissipation fins (13) are installed on the side surfaces of the first heat exchange tube (12), and the heat dissipation fins (13) are in an annular sheet structure.

4. The adjustable high temperature resistant heat exchanger according to claim 1, characterized in that: Each pair of limiting sleeves (19) has a peripheral edge (20) extending from the adjacent ends thereof, and a plurality of connecting bolts (22) are equidistantly provided on the side of one peripheral edge (20), and the ends of the connecting bolts (22) extend to the other side of the corresponding mounting plate (15) and the baffle (18), respectively, and the ends of the connecting bolts (22) penetrate the other peripheral edge (20), and the connecting bolts (22) are fixedly connected to the other peripheral edge (20) via connecting nuts (23).

5. The adjustable high temperature resistant heat exchanger according to claim 4, characterized in that: The inner surfaces of each pair of limiting sleeves (19) have ends that are away from each other and are configured as arc surfaces.

6. The adjustable high temperature resistant heat exchanger according to claim 1, characterized in that: A second liquid inlet pipe (8) is installed at one end of the top of the heat exchange tube (17), and a first discharge pipe (2) is installed at the other end of the bottom of the heat exchange tube (17), with a spacing between the second liquid inlet pipe (8) and the first discharge pipe (2).