End support device for hairpin heat exchanger

Abstract

The application belongs to the technical field of heat exchangers, and discloses an end support device for a hairpin heat exchanger, which comprises an inner baffle, an outer baffle located outside the inner baffle, and an intermediate baffle located between the inner baffle and the outer baffle, the inner baffle, the outer baffle and the intermediate baffle are all arranged in an arc-shaped cylinder segment and are all provided with limiting holes through which heat exchange tube bundles pass, the inner baffle and the outer baffle are arranged in a radial direction of the arc-shaped cylinder segment, the intermediate baffle is arranged in a spaced manner with the inner baffle and the outer baffle, and the intermediate baffle is arranged in a staggered manner with the inner baffle and the outer baffle on a bending axis of the arc-shaped cylinder segment, so as to reduce the impact of shell side fluid on the heat exchange tube bundles, thereby increasing the stability of the heat exchange tube bundles and further increasing the stability of the hairpin heat exchanger.

Description

Technical Field

[0001] This application belongs to the technical field of heat exchangers, and specifically relates to an end support device for a hairpin heat exchanger. Background Technology

[0002] Hairpin heat exchangers are a special type of shell-and-tube heat exchanger, named for their U-shaped tube bundles that resemble hairpins. They are mainly used in high-temperature, high-pressure, or temperature difference compensation applications. They are characterized by their compact structure and strong resistance to thermal stress, and are widely used in industries such as petrochemicals, power, and pharmaceuticals.

[0003] Currently, hairpin heat exchangers include a shell, a heat exchange tube bundle located inside the shell, and baffles located inside the shell. The shell includes an arc-shaped shell section and straight shell sections located at both ends of the arc-shaped shell section. The baffles are located in the straight shell sections. The heat exchange tube bundle includes an arc-shaped heat exchange section located in the arc-shaped shell section and a straight heat exchange section located in the straight shell section. Due to the high internal flow velocity, high turbulence intensity, and large eddies in the arc-shaped shell section, the scouring intensity on the arc-shaped heat exchange section is high, which can easily induce vibration in the arc-shaped heat exchange section, thereby affecting the stability of the heat exchange tube bundle.

[0004] To increase the stability of the heat exchanger tube bundle, one approach is to install inner and outer support plates inside the arc-shaped cylindrical section to support the tube bundle. Multiple inner and outer support plates are arranged along the bending axis of the arc-shaped cylindrical section, staggered to create a connecting channel between adjacent plates. This allows the shell-side fluid to pass through the connecting channel. While this achieves the goal of limiting and supporting the heat exchanger tube bundle with the inner and outer support plates to increase its stability, the flow direction of the shell-side fluid changes when it passes through the connecting channel. The fluid then flows towards either the smaller or larger diameter tube wall of the arc-shaped cylindrical section, increasing the impact of the shell-side fluid on the heat exchanger tube bundle and consequently affecting its stability. Utility Model Content

[0005] This application provides an end support device for a hairpin heat exchanger to reduce the impact of shell-side fluid on the heat exchange tube bundle and increase the stability of the heat exchange tube bundle.

[0006] The technical solution adopted in this application is as follows:

[0007] An end support device for a hairpin heat exchanger includes an inner baffle plate, an outer baffle plate located outside the inner baffle plate, and an intermediate baffle plate located between the inner baffle plate and the outer baffle plate. The inner baffle plate, the outer baffle plate, and the intermediate baffle plate are all disposed in an arc-shaped cylindrical section and are all provided with limiting holes for heat exchange tube bundles to pass through. The inner baffle plate and the outer baffle plate are arranged radially spaced along the arc-shaped cylindrical section. The intermediate baffle plate is spaced apart from the inner baffle plate and the outer baffle plate, and the intermediate baffle plate is offset from the inner baffle plate and the outer baffle plate in the bending axis direction of the arc-shaped cylindrical section.

[0008] By adopting the above technical solution, since the inner baffle, outer baffle, and middle baffle are all located in the arc-shaped cylindrical section and are all provided with limiting holes for the heat exchange tube bundle to pass through, on the one hand, the inner baffle, outer baffle, and middle baffle can be used to limit and support the heat exchange tube bundle to reduce the vibration of the heat exchange tube bundle, thereby increasing the stability of the heat exchange tube bundle. On the other hand, the inner baffle, outer baffle, and middle baffle can be used to make the shell-side fluid deflected in the arc-shaped cylindrical section to improve the heat exchange efficiency of the hairpin heat exchanger.

[0009] Furthermore, because the inner and outer baffles are arranged radially at intervals along the arc-shaped cylindrical section, and the intermediate baffle is also arranged at intervals with both the inner and outer baffles, and is misaligned with both the inner and outer baffles along the bending axis of the arc-shaped cylindrical section, the shell-side fluid flowing inside the arc-shaped cylindrical section will converge towards the bending axis of the arc-shaped cylindrical section due to the obstruction of the inner and outer baffles, and then continue to flow along the bending axis of the arc-shaped cylindrical section. In this design, the shell-side fluid flows to the location of the intermediate baffle, where the baffle blocks the flow, causing it to split into two streams that flow towards the inner wall of the curved cylindrical section with a larger diameter and the inner wall with a smaller diameter, respectively. Compared to existing technologies, this design not only achieves the splitting of the shell-side fluid, reducing the kinetic energy of each stream and thus reducing the impact of the shell-side fluid on the heat exchange tube bundle, but also increases the stability of the heat exchange tube bundle and consequently the stability of the hairpin heat exchanger.

[0010] In addition, the end support device in this application can increase the baffle effect on the shell-side fluid compared with the prior art, so that the shell-side fluid located inside the arc-shaped cylindrical section and the shell-side fluid located outside the arc-shaped cylindrical section can be fully mixed to improve the heat exchange effect of the hairpin heat exchanger; at the same time, it can also shorten the flow path of the shell-side fluid in the arc-shaped cylindrical section to a certain extent, thereby improving the flow efficiency of the shell-side fluid in the arc-shaped cylindrical section and shortening the residence time of the shell-side fluid in the arc-shaped cylindrical section, thereby further improving the heat exchange efficiency of the hairpin heat exchanger.

[0011] Optionally, multiple inner and outer baffles are provided at intervals along the bending axis of the arc-shaped cylindrical section, and multiple intermediate baffles are provided at intervals along the bending axis of the arc-shaped cylindrical section, with each intermediate baffle located between two adjacent inner baffles.

[0012] By adopting the above technical solution, since multiple inner baffles, outer baffles, and intermediate baffles are spaced apart along the bending axis of the arc-shaped cylinder section, the limiting and support points of the heat exchange tube bundle by the inner baffles, outer baffles, and intermediate baffles are increased, thereby further reducing the vibration of the heat exchange tube bundle and thus further increasing the stability of the heat exchange tube bundle. Furthermore, since each intermediate baffle is located between two adjacent inner baffles, it improves the baffle effect on the shell-side fluid to increase the heat exchange effect of the hairpin heat exchanger, and further increases the limiting and support effect on the heat exchange tube bundle, thereby further increasing the stability of the heat exchange tube bundle.

[0013] Optionally, the multiple inner baffles, the multiple outer baffles, and the multiple intermediate baffles are all arranged at equal angles along the bending axis of the arc-shaped cylindrical section.

[0014] By adopting the above technical solution, since multiple inner baffles, multiple outer baffles, and multiple intermediate baffles are all set at equal angles along the bending axis of the arc-shaped cylindrical section, the inner baffles, outer baffles, and intermediate baffles are uniformly set along the bending axis of the arc-shaped cylindrical section, so as to ensure the limiting and supporting effect on the heat exchange tube bundle, and at the same time make the flow of shell-side fluid flowing in the arc-shaped cylindrical section more stable.

[0015] Optionally, the end support device further includes an inner tie rod located at the inner end of the inner baffle and a first tie rod located at the outer end of the inner baffle. The first tie rod is located on both sides of the inner baffle. One end of the inner tie rod and one end of the first tie rod are fixedly connected to the end baffle in one of the straight cylinders. The inner baffle is fixedly connected to the inner tie rod and the first tie rod.

[0016] And / or, the end support device further includes an outer tie rod located at the outer end of the outer baffle and a second tie rod located at the inner end of the outer baffle. The second tie rod is located on both sides of the outer baffle. One end of the outer tie rod and the second tie rod are fixedly connected to the end baffle in one of the straight cylinders. The outer baffle is fixedly connected to the outer tie rod and the second tie rod.

[0017] By adopting the above technical solution, since the inner tie rod and one end of the first tie rod are both fixedly connected to the end baffle in one of the straight cylinders, and the inner baffle is fixedly connected to the inner tie rod and the first tie rod, the inner baffle is fixed, thereby increasing the stability of the inner baffle and ensuring the limiting and supporting effect of the inner baffle on the heat exchange tube bundle, so as to ensure the stability of the heat exchange tube bundle.

[0018] Since one end of the outer tie rod and the second tie rod are both fixedly connected to the end baffle in one of the straight cylinders, and the outer baffle is fixedly connected to the outer tie rod and the second tie rod, the outer baffle is fixed, thereby increasing the stability of the outer baffle and ensuring the limiting and supporting effect of the outer baffle on the heat exchange tube bundle, so as to ensure the stability of the heat exchange tube bundle.

[0019] Optionally, the end support device further includes an inner tie rod extending along the bending axis of the arc-shaped cylindrical section, and multiple inner baffles are spaced apart along the bending axis of the arc-shaped cylindrical section, with the inner tie rod sequentially and fixedly connected to multiple inner baffles.

[0020] And / or, the end support device further includes an outer tie rod extending along the bending axis of the arc-shaped cylindrical section, and multiple outer baffles are spaced apart along the bending axis of the arc-shaped cylindrical section, with the outer tie rod sequentially and fixedly connected to multiple outer baffles.

[0021] By adopting the above technical solution, since the inner tie rod extends along the bending axis of the arc-shaped cylinder section and is sequentially fixed to multiple inner baffles, the inner tie rod is used to fix multiple inner baffles. This increases the stability of multiple inner baffles on the one hand and reduces the difficulty of fixing the inner baffles on the other hand, thereby improving the assembly efficiency of the end support device.

[0022] Since the outer tie rod extends along the bending axis of the arc-shaped cylindrical section and is sequentially fixed to multiple outer baffles, the outer tie rod is used to fix multiple outer baffles. This increases the stability of the multiple outer baffles and reduces the difficulty of fixing the outer baffles, thereby improving the assembly efficiency of the end support device.

[0023] Optionally, a third tie rod is provided between the inner baffle and the middle baffle, located on both sides of the middle baffle, and the two ends of the third tie rod are fixedly connected to the inner baffle and the middle baffle respectively;

[0024] And / or, a fourth tie rod is provided between the outer baffle and the middle baffle, located on both sides of the middle baffle, and the two ends of the fourth tie rod are fixedly connected to the outer baffle and the middle baffle respectively.

[0025] By adopting the above technical solution, since the two ends of the third tie rod are fixedly connected to the inner baffle and the middle baffle respectively, the middle baffle is fixedly connected to the inner baffle, thereby increasing the stability of the middle baffle and ensuring the limiting and supporting effect of the middle baffle on the heat exchange tube bundle, which further increases the stability of the heat exchange tube bundle.

[0026] Since the two ends of the fourth tie rod are fixedly connected to the outer baffle and the middle baffle respectively, the middle baffle is fixedly connected to the outer baffle to increase the stability of the middle baffle, thereby ensuring the limiting and supporting effect of the middle baffle on the heat exchange tube bundle, and further increasing the stability of the heat exchange tube bundle.

[0027] Optionally, the projection of the intermediate baffle toward the inner baffle has a first overlap area that overlaps with the inner baffle and a second overlap area that overlaps with the outer baffle.

[0028] By adopting the above technical solution, since the projection of the intermediate baffle towards the inner baffle has a first overlapping area that overlaps with the inner baffle and a second overlapping area that overlaps with the outer baffle, the portion of the inner baffle overlapping with the first overlapping area can be used to limit and support the same heat exchange tube. The portion of the outer baffle overlapping with the second overlapping area can also be used to limit and support the same heat exchange tube. This allows all heat exchange tubes in the heat exchange tube bundle to be limited and supported by the baffles, further increasing the limiting and supporting effect on the heat exchange tube bundle, thereby further increasing the stability of the heat exchange tube bundle. At the same time, it can also increase the blocking effect of the inner baffle, outer baffle, and intermediate baffle on the shell-side fluid, so as to ensure the heat exchange effect of the hairpin heat exchanger.

[0029] Optionally, the inner baffle, the outer baffle, and the middle baffle each include a plurality of sequentially arranged support ribs, and the sides of two adjacent support ribs that are close to each other are provided with receiving grooves, and the two opposite receiving grooves together form the limiting hole.

[0030] By adopting the above technical solution, since the inner baffle, outer baffle, and middle baffle all include multiple sequentially arranged support ribs, and the corresponding receiving grooves on two adjacent support ribs together form a limiting hole, the inner baffle, outer baffle, and middle baffle can be installed simultaneously with the installation of the heat exchange tube bundle. This reduces the assembly difficulty of the heat exchange tube bundle, inner baffle, outer baffle, and middle baffle, thereby improving the production efficiency of the hairpin heat exchanger.

[0031] Optionally, the inner baffle, the outer baffle, and the middle baffle are all arranged perpendicular to the bending axis of the arc-shaped cylindrical section.

[0032] By adopting the above technical solution, since the inner baffle, outer baffle, and middle baffle are all set perpendicular to the bending axis of the arc-shaped cylinder section, the obstruction effect of the inner baffle, outer baffle, and middle baffle on the shell-side fluid is increased, thereby increasing the heat exchange effect of the hairpin heat exchanger. At the same time, it also facilitates the installation of the inner baffle, outer baffle, middle baffle, and heat exchange tube bundle, thereby improving the production efficiency of the hairpin heat exchanger.

[0033] Optionally, both the inner and outer baffles are arranged at an angle to the radial direction of the arc-shaped cylindrical section, so that the inner and outer baffles can guide the shell-side fluid to the location of the intermediate baffle.

[0034] And / or, the intermediate baffle includes an inner guide section and an outer guide section, both of which are arranged at an angle to the radial direction of the arc-shaped cylinder section, so that the inner guide section can guide the shell-side fluid to the location of the inner baffle, and the outer guide section can guide the shell-side fluid to the location of the outer baffle.

[0035] By adopting the above technical solution, since both the inner and outer baffles are set at an angle to the radial direction of the arc-shaped cylindrical section, when the shell-side fluid flows in the arc-shaped cylindrical section, both the inner and outer baffles can block and guide the shell-side fluid, allowing it to flow to the position of the middle baffle under the action of the inner and outer baffles. This reduces the pressure loss of the shell-side fluid and alleviates the dead flow situation between the inner baffle and the inner wall of the arc-shaped cylindrical section with a smaller diameter, and also alleviates the dead flow situation between the outer baffle and the inner wall of the arc-shaped cylindrical section with a larger diameter, thereby further improving the heat exchange effect of the hairpin heat exchanger.

[0036] Since both the inner and outer guide sections are set at an angle to the radial direction of the arc-shaped cylindrical section, after the shell-side fluid flows to the location of the intermediate baffle, the inner guide section can guide part of the shell-side fluid, causing it to flow towards the location of the inner baffle under the action of the inner guide section. The outer guide section can guide the remaining shell-side fluid, causing it to flow towards the location of the outer baffle under the action of the outer guide section. This reduces the pressure loss of the shell-side fluid on the one hand, and ensures the smoothness of the shell-side fluid flow in the arc-shaped cylindrical section and improves the flow efficiency of the shell-side fluid in the arc-shaped cylindrical section on the other hand.

[0037] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0038] 1. The end support device in this application includes an inner baffle plate, an outer baffle plate located outside the inner baffle plate, and an intermediate baffle plate located between the inner and outer baffle plates. The inner, outer, and intermediate baffle plates are all disposed in the arc-shaped cylindrical section and are all provided with limiting holes for the heat exchange tube bundle to pass through. The inner and outer baffle plates are arranged radially spaced along the arc-shaped cylindrical section, and the intermediate baffle plate is arranged spaced apart from the inner and outer baffle plates. The intermediate baffle plate is also staggered from the inner and outer baffle plates in the bending axis direction of the arc-shaped cylindrical section. As a result, compared with the prior art, the end support device in this application can not only achieve the diversion of the shell-side fluid to reduce the kinetic energy of each shell-side fluid, thereby reducing the impact of the shell-side fluid on the heat exchange tube bundle and increasing the stability of the heat exchange tube bundle, but also increase the stability of the hairpin heat exchanger.

[0039] 2. In this application, multiple inner and outer baffles are spaced apart along the bending axis of the arc-shaped cylindrical section, and multiple intermediate baffles are spaced apart along the bending axis of the arc-shaped cylindrical section. This increases the limiting and support points of the heat exchange tube bundle by the inner, outer, and intermediate baffles, thereby further reducing the vibration of the heat exchange tube bundle and increasing its stability. Each intermediate baffle section is located between two adjacent inner baffles, which improves the baffle effect on the shell-side fluid to increase the heat exchange effect of the hairpin heat exchanger, and further increases the limiting and support effect on the heat exchange tube bundle, thus further increasing its stability.

[0040] 3. In this application, the multiple inner baffles, multiple outer baffles, and multiple intermediate baffles are all arranged at equal angles along the bending axis of the arc-shaped cylindrical section, thereby ensuring that the inner baffles, outer baffles, and intermediate baffles are all uniformly arranged along the bending axis of the arc-shaped cylindrical section, so as to ensure the limiting and supporting effect on the heat exchange tube bundle, and at the same time make the flow of shell-side fluid flowing in the arc-shaped cylindrical section more stable. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 This is a schematic diagram of the end support device installed in an arc-shaped cylindrical section according to one embodiment of this application. The dotted line in the figure represents the radial direction of the arc-shaped cylindrical section, and the dashed line represents the bending axis of the arc-shaped cylindrical section.

[0043] Figure 2This is a schematic diagram of the end support device described in one embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the inner baffle and the outer baffle in one embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the structure of the intermediate baffle plate described in one embodiment of this application;

[0046] Figure 5 for Figure 4 Enlarged view of part A in the middle.

[0047] Figure label:

[0048] 1. Inner baffle; 11. Inner tie rod; 12. First tie rod; 13. Third tie rod; 2. Outer baffle; 21. Outer tie rod; 22. Second tie rod; 23. Fourth tie rod; 3. Middle baffle; 31. Support rib; 311. Limiting hole; 4. Arc-shaped cylindrical section; 41. End baffle. Detailed Implementation

[0049] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0051] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0054] Reference Figures 1 to 5 An end support device for a hairpin heat exchanger is disclosed, comprising an inner baffle 1, an outer baffle 2 located outside the inner baffle 1, and an intermediate baffle 3 located between the inner baffle 1 and the outer baffle 2. The inner baffle 1, the outer baffle 2, and the intermediate baffle 3 are all disposed in an arc-shaped cylindrical section 4 and are all provided with limiting holes 311 for the heat exchange tube bundle to pass through. The inner baffle 1 and the outer baffle 2 are arranged radially spaced along the arc-shaped cylindrical section 4, and the intermediate baffle 3 is arranged spaced apart from the inner baffle 1 and the outer baffle 2. The intermediate baffle 3 is also staggered from the inner baffle 1 and the outer baffle 2 in the direction of the bending axis of the arc-shaped cylindrical section 4.

[0055] It should be noted that the outer baffle 2 being located outside the inner baffle 1 as mentioned above means that the outer baffle 2 is located on the side of the inner baffle 1 away from the center of the arc-shaped cylindrical section 4; the bending axis of the arc-shaped cylindrical section 4 mentioned above refers to the theoretical baseline of the geometry of the arc-shaped cylindrical section 4, which represents the neutral path in which the length of the arc-shaped cylindrical section 4 remains unchanged during the bending process.

[0056] Since the inner baffle 1, the outer baffle 2, and the middle baffle 3 are all located in the arc-shaped cylindrical section 4 and are all provided with limiting holes 311 for the heat exchange tube bundle to pass through, on the one hand, the inner baffle 1, the outer baffle 2, and the middle baffle 3 can be used to limit and support the heat exchange tube bundle, thereby reducing the vibration of the heat exchange tube bundle and increasing the stability of the heat exchange tube bundle. On the other hand, the inner baffle 1, the outer baffle 2, and the middle baffle 3 can be used to make the shell-side fluid flow in the arc-shaped cylindrical section 4, thereby improving the heat exchange efficiency of the hairpin heat exchanger.

[0057] Furthermore, since the inner baffle 1 and the outer baffle 2 are arranged radially at intervals along the arc-shaped cylindrical section 4, and the middle baffle 3 is arranged at intervals with the inner baffle 1 and the outer baffle 2, and the middle baffle 3 is misaligned with the inner baffle 1 and the outer baffle 2 in the direction of the bending axis of the arc-shaped cylindrical section 4, when the shell-side fluid flows inside the arc-shaped cylindrical section 4, the shell-side fluid will converge towards the position of the bending axis of the arc-shaped cylindrical section 4 under the obstruction of the inner baffle 1 and the outer baffle 2, and then flow along the bending axis of the arc-shaped cylindrical section 4. The flow is along the curved axis, and the shell-side fluid flows to the position of the intermediate baffle 3. The intermediate baffle 3 blocks the shell-side fluid, causing it to split into two streams under the action of the intermediate baffle 3, flowing to the inner wall of the arc-shaped cylindrical section 4 with a larger diameter and the inner wall with a smaller diameter, respectively. Compared with the existing technology, this not only achieves the splitting of the shell-side fluid to reduce the kinetic energy of each shell-side fluid, but also reduces the impact of the shell-side fluid on the heat exchange tube bundle, thereby increasing the stability of the heat exchange tube bundle and thus increasing the stability of the hairpin heat exchanger.

[0058] In addition, the end support device in this application can increase the deflection effect on the shell-side fluid compared with the prior art, so that the shell-side fluid located inside the arc-shaped cylindrical section 4 and the shell-side fluid located outside the arc-shaped cylindrical section 4 can be fully mixed to improve the heat exchange effect of the hairpin heat exchanger; at the same time, it can also shorten the flow path of the shell-side fluid in the arc-shaped cylindrical section 4 to a certain extent, thereby improving the flow efficiency of the shell-side fluid in the arc-shaped cylindrical section 4 and shortening the residence time of the shell-side fluid in the arc-shaped cylindrical section 4, thereby improving the heat exchange efficiency of the hairpin heat exchanger.

[0059] It should be noted that the inner wall with a larger diameter in the arc-shaped cylindrical section 4 mentioned above refers to the inner wall of the arc-shaped cylindrical section 4 that is far from its own center, while the inner wall with a smaller diameter in the arc-shaped cylindrical section 4 refers to the inner wall of the arc-shaped cylindrical section 4 that is close to its own center. The inner wall with a larger diameter in the arc-shaped cylindrical section 4 and the inner wall with a smaller diameter in the arc-shaped cylindrical section 4 are arranged opposite to each other.

[0060] This application does not specify the number of the inner baffle 1, the outer baffle 2, and the middle baffle 3. Preferably, refer to... Figure 1 and Figure 2 Multiple inner baffles 1 and outer baffles 2 are arranged at intervals along the bending axis of the arc-shaped cylindrical section 4. Multiple intermediate baffles 3 are arranged at intervals along the bending axis of the arc-shaped cylindrical section 4, and each intermediate baffle 3 is located between two adjacent inner baffles 1.

[0061] It is understandable that the number of inner baffles 1 is equal to the number of outer baffles 2, and the inner baffles 1 and outer baffles 2 are set in a one-to-one correspondence; the number of middle baffles 3 is less than the number of inner baffles 1, and the difference between the number of inner baffles 1 and middle baffles 3 is 1.

[0062] Since multiple inner baffles 1, outer baffles 2, and intermediate baffles 3 are spaced along the bending axis of the arc-shaped cylindrical section 4, the limiting and support points of the heat exchange tube bundle by the inner baffles 1, outer baffles 2, and intermediate baffles 3 are increased, further reducing the vibration of the heat exchange tube bundle and thus further increasing its stability. Furthermore, since each intermediate baffle 3 is located between two adjacent inner baffles 1, it improves the baffle effect on the shell-side fluid, thereby increasing the heat exchange effect of the hairpin heat exchanger, and further increases the limiting and support effect on the heat exchange tube bundle, thus further increasing its stability.

[0063] This application does not impose specific limitations on the arrangement of multiple inner baffles 1, multiple outer baffles 2, and multiple intermediate baffles 3. Preferably, the multiple inner baffles 1, multiple outer baffles 2, and multiple intermediate baffles 3 are all arranged at equal angles along the bending axis of the arc-shaped cylindrical section 4.

[0064] It is understandable that the distance between two adjacent inner baffles 1 is equal, the distance between two adjacent outer baffles 2 is equal, and the distance between two adjacent middle baffles 3 is equal.

[0065] Since multiple inner baffles 1, multiple outer baffles 2, and multiple intermediate baffles 3 are all set at equal angles along the bending axis of the arc-shaped cylindrical section 4, the inner baffles 1, outer baffles 2, and intermediate baffles 3 are uniformly set along the bending axis of the arc-shaped cylindrical section 4 to ensure the limiting and supporting effect on the heat exchange tube bundle, and at the same time make the flow of shell-side fluid in the arc-shaped cylindrical section 4 more stable.

[0066] In other embodiments, the multiple inner baffles 1, the multiple outer baffles 2, and the multiple intermediate baffles 3 may also be distributed at unequal distances along the bending axis of the arc-shaped cylindrical section 4.

[0067] In other embodiments, there may be only one inner baffle 1, one outer baffle 2, and one middle baffle 3, and the inner baffle 1, the outer baffle 2, and the middle baffle 3 are all located in the middle of the arc-shaped cylindrical section 4 along its length.

[0068] This application does not specify the fixing method of the inner baffle 1. Preferably, refer to Figures 1 to 3 The end support device also includes an inner tie rod 11 located at the inner end of the inner baffle 1 and a first tie rod 12 located at the outer end of the inner baffle 1. The first tie rod 12 is located on both sides of the inner baffle 1. One end of the inner tie rod 11 and the first tie rod 12 are fixedly connected to the end baffle 41 in one of the straight cylinders. The inner baffle 1 is fixedly connected to the inner tie rod 11 and the first tie rod 12.

[0069] It is understandable that there are two first pull rods 12, which are located on both sides of the outer end of the inner baffle 1. Baffles are provided in the straight cylindrical sections at both ends of the arc-shaped cylindrical section 4. For ease of understanding, the two straight cylindrical sections are defined as the liquid inlet straight cylindrical section and the liquid outlet straight cylindrical section, respectively. The baffle in the liquid inlet straight cylindrical section near the arc-shaped cylindrical section 4 is defined as the end baffle 41. That is, one end of the inner pull rod 11 and the first pull rod 12 are fixedly connected to the end baffle 41 located inside the liquid inlet straight cylindrical section.

[0070] It should be noted that the inner end of the inner baffle 1 refers to the end of the inner baffle 1 that is closer to the center of the arc-shaped cylindrical section 4, while the outer end of the inner baffle 1 refers to the end of the inner baffle 1 that is farther away from the center of the arc-shaped cylindrical section 4.

[0071] Since one end of the inner tie rod 11 and the first tie rod 12 are both fixedly connected to the end baffle 41 in one of the straight cylinders, and the inner baffle 1 is fixedly connected to the inner tie rod 11 and the first tie rod 12, the inner baffle 1 is fixed, thereby increasing the stability of the inner baffle 1 and ensuring the limiting and supporting effect of the inner baffle 1 on the heat exchange tube bundle, so as to ensure the stability of the heat exchange tube bundle.

[0072] Furthermore, refer to Figure 1 and Figure 2 The end support device also includes an inner tie rod 11 extending along the bending axis of the arc-shaped cylindrical section 4. Multiple inner baffles 1 are spaced apart along the bending axis of the arc-shaped cylindrical section 4. The inner tie rod 11 is sequentially fixed to multiple inner baffles 1, thereby realizing the fixation of multiple inner baffles 1 by the inner tie rod 11. On the one hand, this increases the stability of multiple inner baffles 1, and on the other hand, it reduces the difficulty of fixing the inner baffles 1, thereby improving the assembly efficiency of the end support device.

[0073] Preferably, the end of the inner tie rod 11 away from the end baffle 41 is spaced apart from the liquid outlet straight cylinder section, that is, the end of the inner tie rod 11 away from the end baffle 41 is not connected to the liquid outlet straight cylinder section and its internal baffle, so that the position of the inner baffle 1 can be adaptively adjusted according to the temperature change.

[0074] In other embodiments, the inner baffle 1 can be directly fixed to the inner wall of the arc-shaped cylindrical section 4 with a smaller diameter.

[0075] This application does not specify the fixing method of the outer baffle 2; preferably, refer to... Figures 1 to 3The end support device also includes an outer tie rod 21 located at the outer end of the outer baffle 2 and a second tie rod 22 located at the inner end of the outer baffle 2. The second tie rod 22 is located on both sides of the outer baffle 2. One end of the outer tie rod 21 and the second tie rod 22 are fixedly connected to the end baffle 41 in one of the straight cylinders. The outer baffle 2 is fixedly connected to the outer tie rod 21 and the second tie rod 22.

[0076] It is understandable that there are two second tie rods 22, which are located on both sides of the outer end of the outer baffle 2.

[0077] It should be noted that the inner end of the outer baffle 2 refers to the end of the outer baffle 2 that is closer to the center of the arc-shaped cylindrical section 4, while the outer end of the outer baffle 2 refers to the end of the outer baffle 2 that is farther away from the center of the arc-shaped cylindrical section 4.

[0078] Since one end of the outer tie rod 21 and the second tie rod 22 are both fixedly connected to the end baffle 41 in one of the straight cylindrical sections, and the outer baffle 2 is fixedly connected to the outer tie rod 21 and the second tie rod 22, the outer baffle 2 is fixed, thereby increasing the stability of the outer baffle 2 and ensuring the limiting and supporting effect of the outer baffle 2 on the heat exchange tube bundle, so as to ensure the stability of the heat exchange tube bundle.

[0079] Furthermore, refer to Figure 1 and Figure 2 The end support device also includes an outer tie rod 21 extending along the bending axis of the arc-shaped cylindrical section 4. Multiple outer baffles 2 are spaced along the bending axis of the arc-shaped cylindrical section 4. The outer tie rod 21 is sequentially fixed to multiple outer baffles 2, thereby realizing the fixation of multiple outer baffles 2 by the outer tie rod 21. On the one hand, it increases the stability of multiple outer baffles 2, and on the other hand, it reduces the difficulty of fixing the outer baffles 2, so as to improve the assembly efficiency of the end support device.

[0080] Preferably, the end of the outer tie rod 21 away from the end baffle 41 is spaced apart from the liquid outlet straight cylinder section, that is, the end of the outer tie rod 21 away from the end baffle 41 is not connected to the liquid outlet straight cylinder section and its internal baffles, so that the position of the outer baffle 2 can be adaptively adjusted according to the temperature change.

[0081] In other embodiments, the outer baffle 2 can be directly fixed to the inner wall of the arc-shaped cylindrical section 4 with a larger diameter.

[0082] This application does not specify a particular method for fixing the intermediate baffle 3, which can be any of the following embodiments:

[0083] Implementation Method 1, in this implementation method, refer to Figure 1 and Figure 2 A third tie rod 13 is provided between the inner baffle 1 and the middle baffle 3, located on both sides of the middle baffle 3. The two ends of the third tie rod 13 are fixedly connected to the inner baffle 1 and the middle baffle 3, respectively.

[0084] Understandably, there are two third tie rods 13, with the two third tie rods 13 located on both sides of the intermediate baffle 3.

[0085] Since the two ends of the third tie rod 13 are fixedly connected to the inner baffle 1 and the middle baffle 3 respectively, the middle baffle 3 is fixedly connected to the inner baffle 1, thereby increasing the stability of the middle baffle 3 and ensuring the limiting and supporting effect of the middle baffle 3 on the heat exchange tube bundle, which further increases the stability of the heat exchange tube bundle; at the same time, the position of the middle baffle 3 can move with the inner baffle 1.

[0086] Implementation Method Two: In this implementation method, refer to... Figure 1 and Figure 2 A fourth tie rod 23 is provided between the outer baffle 2 and the middle baffle 3, located on both sides of the middle baffle 3. The two ends of the fourth tie rod 23 are fixedly connected to the outer baffle 2 and the middle baffle 3 respectively.

[0087] It is understandable that there are two fourth tie rods 23, which are located on opposite sides of the middle baffle 3.

[0088] Since the two ends of the fourth tie rod 23 are fixedly connected to the outer baffle 2 and the middle baffle 3 respectively, the middle baffle 3 is fixedly connected to the outer baffle 2 to increase the stability of the middle baffle 3, thereby ensuring the limiting and supporting effect of the middle baffle 3 on the heat exchange tube bundle, and further increasing the stability of the heat exchange tube bundle; at the same time, the position of the middle baffle 3 can move with the outer baffle 2.

[0089] Preferably, this application employs a combination of the two aforementioned implementation methods, wherein the inner end of the intermediate baffle 3 is fixedly connected to the inner baffle 1 via a third tie rod 13, and the outer end of the intermediate baffle 3 is fixedly connected to the outer baffle 2 via a fourth tie rod 23, thereby further increasing the stability of the intermediate baffle 3.

[0090] Of course, in other embodiments, the intermediate baffle plate 3 can also be fixedly connected to the inner wall of the arc-shaped cylindrical section 4.

[0091] In a preferred embodiment, refer to Figure 1 and Figure 2The projection of the intermediate baffle 3 toward the inner baffle 1 has a first overlapping area that overlaps with the inner baffle 1 and a second overlapping area that overlaps with the outer baffle 2. Thus, the portion of the inner baffle 1 overlapping with the first overlapping area can be used to limit and support the same heat exchange tube, and the portion of the outer baffle 2 overlapping with the second overlapping area can also be used to limit and support the same heat exchange tube. This allows all heat exchange tubes in the heat exchange tube bundle to be limited and supported by the baffles, further increasing the limiting and supporting effect on the heat exchange tube bundle, thereby further increasing the stability of the heat exchange tube bundle. At the same time, it can also increase the blocking effect of the inner baffle 1, the outer baffle 2, and the intermediate baffle 3 on the shell-side fluid, so as to ensure the heat exchange effect of the hairpin heat exchanger.

[0092] This application does not specifically limit the structure of the inner baffle 1, the outer baffle 2, and the middle baffle 3. Preferably, refer to... Figures 3 to 5 The inner baffle 1, outer baffle 2, and middle baffle 3 each include multiple supporting ribs 31 arranged sequentially. The sides of two adjacent supporting ribs 31 that are close to each other are provided with receiving grooves. The two receiving grooves together form a limiting hole 311. This allows the inner baffle 1, outer baffle 2, and middle baffle 3 to be installed at the same time as the heat exchange tube bundle, thereby reducing the assembly difficulty of the heat exchange tube bundle, inner baffle 1, outer baffle 2, and middle baffle 3, and thus improving the production efficiency of the hairpin heat exchanger.

[0093] Preferably, the ends of two adjacent support ribs 31 in the inner baffle 1 are fixed by welding, the ends of two adjacent support ribs 31 in the outer baffle 2 are also fixed by welding, and the ends of two adjacent support ribs 31 in the middle baffle 3 are also fixed by welding.

[0094] The better one is to refer to Figure 5 A gap can be reserved between two adjacent support ribs 31. The ends of two adjacent support ribs 31 are fixedly connected by welding, so that the solder fills the gap between the ends of the two adjacent support ribs 31, and at the same time, the shell-side fluid can also pass through the gap between the two adjacent support ribs 31, so as to further reduce the impact of the shell-side fluid on the heat exchange tube bundle, thereby further increasing the stability of the heat exchange tube bundle. Of course, in other embodiments, the sides of two adjacent support ribs 31 that are close to each other can also be in contact with each other.

[0095] Preferably, the diameter of the limiting hole 311 is larger than the diameter of the heat exchange tube in the heat exchange tube bundle, so as to facilitate the installation of the heat exchange tube bundle and the supporting rib 31.

[0096] Preferably, the accommodating grooves on opposite sides of the same supporting rib 31 are staggered to ensure that the arc-shaped cylindrical section 4 can accommodate more heat exchange tubes.

[0097] In other embodiments, the inner baffle 1, the outer baffle 2, and the middle baffle 3 can all be integral plate structures.

[0098] This application does not impose specific limitations on the arrangement of the inner baffle 1, the outer baffle 2, and the intermediate baffle 3, and they can adopt any of the following embodiments:

[0099] Implementation Method 1, in this implementation method, refer to Figure 1 and Figure 2 The inner baffle 1, the outer baffle 2, and the middle baffle 3 are all set perpendicular to the bending axis of the arc-shaped cylindrical section 4.

[0100] It is understandable that the inner baffle 1, the outer baffle 2, and the middle baffle 3 are all arranged to extend radially along the arc-shaped cylindrical section 4.

[0101] Since the inner baffle 1, outer baffle 2, and middle baffle 3 are all set perpendicular to the bending axis of the arc-shaped cylinder section 4, the obstruction effect of the inner baffle 1, outer baffle 2, and middle baffle 3 on the shell-side fluid is increased, thereby increasing the heat exchange effect of the hairpin heat exchanger. At the same time, it also facilitates the installation of the inner baffle 1, outer baffle 2, middle baffle 3, and heat exchange tube bundle, thereby improving the production efficiency of the hairpin heat exchanger.

[0102] In the second embodiment, both the inner baffle 1 and the outer baffle 2 are arranged at an angle to the radial direction of the arc-shaped cylindrical section 4, so that the inner baffle 1 and the outer baffle 2 can guide the shell-side fluid to the location of the middle baffle 3.

[0103] It is understandable that the inner baffle 1 is inclined from the inside to the outside along the radial direction of the arc-shaped cylindrical section 4, so that after the shell-side fluid flows to the position of the inner baffle 1, the inner baffle 1 guides the shell-side fluid to the position of the middle baffle 3; the outer baffle 2 is inclined from the outside to the inside along the radial direction of the arc-shaped cylindrical section 4, so that after the shell-side fluid flows to the position of the outer baffle 2, the outer baffle 2 guides the shell-side medium to the position of the middle baffle 3.

[0104] Since both the inner baffle 1 and the outer baffle 2 are set at an angle to the radial direction of the arc-shaped cylindrical section 4, when the shell-side fluid flows in the arc-shaped cylindrical section 4, both the inner baffle 1 and the outer baffle 2 can block the shell-side fluid and guide it, so that the shell-side fluid flows to the position of the middle baffle 3 under the action of the inner baffle 1 and the outer baffle 2. On the one hand, this reduces the pressure loss of the shell-side fluid, and on the other hand, it alleviates the dead flow situation between the inner baffle 1 and the inner wall of the arc-shaped cylindrical section 4 with a smaller diameter, and alleviates the dead flow situation between the outer baffle 2 and the inner wall of the arc-shaped cylindrical section 4 with a larger diameter, thereby further improving the heat exchange effect of the hairpin heat exchanger.

[0105] In the third embodiment, the intermediate baffle 3 includes an inner guide section and an outer guide section. Both the inner and outer guide sections are set at an angle to the radial direction of the arc-shaped cylinder section 4, so that the inner guide section can guide the shell-side fluid to the position of the inner baffle 1, and the outer guide section can guide the shell-side fluid to the position of the outer baffle 2.

[0106] It is understood that the inner guide section is located on the side of the outer guide section near the inner baffle 1, and the outer guide section is located on the side of the inner guide section near the outer baffle 2; the inner guide section is inclined from the outside to the inside along the radial direction of the arc-shaped cylindrical section 4 in the direction of the shell-side fluid flow, and the outer guide section is inclined from the inside to the outside along the radial direction of the arc-shaped cylindrical section 4 in the direction of the shell-side fluid flow.

[0107] Since both the inner and outer guide sections are set at an angle to the radial direction of the arc-shaped cylindrical section 4, after the shell-side fluid flows to the position of the intermediate baffle 3, the inner guide section can guide part of the shell-side fluid so that part of the shell-side fluid flows towards the position of the inner baffle 1 under the action of the inner guide section, and the outer guide section can guide the remaining part of the shell-side fluid so that the remaining part of the shell-side fluid flows towards the position of the outer baffle 2 under the action of the outer guide section. This reduces the pressure loss of the shell-side fluid on the one hand, and ensures the smoothness of the shell-side fluid flow in the arc-shaped cylindrical section 4 and improves the flow efficiency of the shell-side fluid in the arc-shaped cylindrical section 4 on the other hand.

[0108] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0109] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0110] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An end support device for a hairpin heat exchanger, characterized in that, The system includes an inner baffle (1), an outer baffle (2) located outside the inner baffle (1), and an intermediate baffle (3) located between the inner baffle (1) and the outer baffle (2). The inner baffle (1), the outer baffle (2), and the intermediate baffle (3) are all located in the arc-shaped cylindrical section (4) and are all provided with limiting holes (311) for the heat exchange tube bundle to pass through. The inner baffle (1) and the outer baffle (2) are arranged radially spaced along the arc-shaped cylindrical section (4). The intermediate baffle (3) is spaced apart from the inner baffle (1) and the outer baffle (2), and the intermediate baffle (3) is offset from the inner baffle (1) and the outer baffle (2) in the direction of the bending axis of the arc-shaped cylindrical section (4).

2. The end support device for a hairpin heat exchanger according to claim 1, characterized in that, The inner baffle (1) and the outer baffle (2) are arranged in multiple intervals along the bending axis of the arc-shaped cylindrical section (4), and the middle baffle (3) is arranged in multiple intervals along the bending axis of the arc-shaped cylindrical section (4), and each middle baffle (3) is located between two adjacent inner baffles (1).

3. The end support device for a hairpin heat exchanger according to claim 2, characterized in that, The multiple inner baffles (1), the multiple outer baffles (2), and the multiple intermediate baffles (3) are all arranged at equal angles along the bending axis of the arc-shaped cylindrical section (4).

4. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, The end support device further includes an inner tie rod (11) located at the inner end of the inner baffle (1) and a first tie rod (12) located at the outer end of the inner baffle (1). The first tie rod (12) is located on both sides of the inner baffle (1). One end of the inner tie rod (11) and the first tie rod (12) are fixedly connected to an end baffle (41) in one of the straight cylinders. The inner baffle (1) is fixedly connected to the inner tie rod (11) and the first tie rod (12). And / or, the end support device further includes an outer tie rod (21) located at the outer end of the outer baffle (2) and a second tie rod (22) located at the inner end of the outer baffle (2). The second tie rod (22) is located on both sides of the outer baffle (2). One end of the outer tie rod (21) and the second tie rod (22) are fixedly connected to an end baffle (41) in one of the straight cylinders. The outer baffle (2) is fixedly connected to the outer tie rod (21) and the second tie rod (22).

5. The end support device for a hairpin heat exchanger according to claim 4, characterized in that, The end support device also includes an inner tie rod (11) extending along the bending axis of the arc-shaped cylindrical section (4). Multiple inner baffles (1) are spaced apart along the bending axis of the arc-shaped cylindrical section (4). The inner tie rod (11) is sequentially fixedly connected to multiple inner baffles (1). And / or, the end support device further includes an outer tie rod (21) extending along the bending axis of the arc-shaped cylindrical section (4), and multiple outer baffles (2) are spaced apart along the bending axis of the arc-shaped cylindrical section (4), and the outer tie rod (21) is sequentially fixedly connected to multiple outer baffles (2).

6. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, A third tie rod (13) is provided between the inner baffle (1) and the middle baffle (3) on both sides of the middle baffle (3). The two ends of the third tie rod (13) are fixedly connected to the inner baffle (1) and the middle baffle (3) respectively. And / or, a fourth tie rod (23) is provided between the outer baffle (2) and the middle baffle (3) on both sides of the middle baffle (3), and the two ends of the fourth tie rod (23) are fixedly connected to the outer baffle (2) and the middle baffle (3) respectively.

7. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, The projection of the intermediate baffle (3) toward the inner baffle (1) has a first overlap area that overlaps with the inner baffle (1) and a second overlap area that overlaps with the outer baffle (2).

8. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, The inner baffle (1), the outer baffle (2) and the middle baffle (3) each include a plurality of sequentially arranged support ribs (31), and the sides of two adjacent support ribs (31) that are close to each other are provided with receiving grooves, and the two receiving grooves together form the limiting hole (311).

9. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, The inner baffle (1), the outer baffle (2), and the middle baffle (3) are all arranged perpendicular to the bending axis of the arc-shaped cylindrical section (4).

10. An end support device for a hairpin heat exchanger according to any one of claims 1-3, characterized in that, The inner baffle (1) and the outer baffle (2) are both set at an angle to the radial direction of the arc-shaped cylindrical section (4) so ​​that the inner baffle (1) and the outer baffle (2) can guide the shell-side fluid to the location of the middle baffle (3). And / or, the intermediate baffle (3) includes an inner guide section and an outer guide section, both of which are set at an angle to the radial direction of the arc-shaped cylinder section (4), so that the inner guide section can guide the shell-side fluid to the location of the inner baffle (1), and the outer guide section can guide the shell-side fluid to the location of the outer baffle (2).

Images