Final-stage baffle plate and hairpin type heat exchanger tail anti-vibration structure with same
By designing a structure that combines the final stage baffle with the mounting section, the vibration problem of the heat exchange tube caused by uneven fixed plate length was solved, thus improving stability and efficiency.
Patent Information
- Application Number
- CN202422876493.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-25
AI Technical Summary
In the prior art, the design of the final stage baffle plate in hairpin heat exchangers results in uneven length of the fixed plate, which can easily cause the heat exchange tubes to vibrate and affect their service life.
Design a final stage baffle plate, including a semi-circular body and a radially extending mounting part. The through groove is used to fix the flow of heat exchange medium. Inner and outer U-shaped fixing plates are fixedly connected to the body and the mounting part respectively. The heat exchange tube is fixed by anti-vibration components, which reduces the length of the fixing plate and enhances stability.
It effectively reduces heat exchange tube vibration, extends the service life of heat exchangers, improves heat exchange efficiency, increases the medium flow area, and reduces the probability of vibration.
Smart Images
Figure CN223470554U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger puts the technical field of vibration, concretely relates to a last stage baffle and have its hairpin heat exchanger tail part anti vibration structure. BACKGROUND
[0002] The baffle is mainly used for changing the direction of fluid in the heat exchanger shell, makes fluid perpendicular to the tube bundle flow, increases the turbulence degree of fluid, provides necessary support for the heat exchange pipe simultaneously, helps to keep the structural stability of the heat exchanger.
[0003] In the hairpin heat exchanger of U-shaped tube heat exchange pipe, the tail part shell is U-shaped elbow pipe structure, the bending radius of heat exchange pipe is larger, and the support span of heat exchange pipe in the tail part shell is also larger, when the heat exchanger works, under the flow of heat exchange medium, the heat exchange pipe will vibrate, and then influence the service life of the whole heat exchanger.
[0004] In the prior art, the anti vibration plate is arranged in the tail part U-shaped elbow pipe, and the heat exchange pipe is passed through the anti vibration plate to reduce vibration, for example: the patent name of a kind of hairpin heat exchanger tail part anti vibration structure is disclosed in CN220853227U, including inner U-shaped fixed plate located in the side of small radius and outer U-shaped fixed plate located in the side of large radius, the anti vibration plate is arranged between the two fixed plates, since the baffle is semicircular structure, therefore, the two fixed plates need to be installed on the two baffles respectively, and the two baffles have a certain distance, which will make the length of one of the fixed plates longer, and easily cause the heat exchange pipe to vibrate.
[0005] In summary, the two fixed plates need to be installed on the two baffles respectively, and the length of one of the fixed plates is longer, which easily causes the problem of heat exchange pipe vibration caused by fixed plate. UTILITY MODEL CONTENTS
[0006] The utility model aims at solving the problem that the two fixed plates need to be installed on the two baffles respectively, and the length of one of the fixed plates is longer, which easily causes the problem of heat exchange pipe vibration caused by fixed plate. Further, a last stage baffle and a hairpin heat exchanger tail part anti vibration structure having the same are provided.
[0007] The technical scheme of the utility model is: a last stage baffle, comprising: a body, the body is semicircular structure;
[0008] Its characterized in that, the straight line segment on the body is connected with the installation portion extending along the radial direction, the installation portion has two sides through the through slot, one of the inner U-shaped fixed plate and the outer U-shaped fixed plate is fixedly connected with the body, and the other is fixedly connected with the installation portion, and the through slot is used for providing the space for the flow of heat exchange medium.
[0009] Further, the installation portion is circular arc structure.
[0010] Further, the through slot is a semicircular slot.
[0011] A hairpin heat exchanger tail anti-vibration structure, comprising: a shell, a tail U-shaped bend pipe, a penultimate baffle and the last baffle in any one of the above solutions, the last baffle is installed on the inner wall of the shell at the connection between the shell and the tail U-shaped bend pipe, and the penultimate baffle is installed on the inner wall of the shell and located on the side of the last baffle away from the tail U-shaped bend pipe.
[0012] The tail U-shaped bend pipe is provided with an inner U-shaped fixed plate and an outer U-shaped fixed plate, the inner U-shaped fixed plate and the outer U-shaped fixed plate are fixedly connected with the last baffle, and a vibration-proof piece is arranged between the inner U-shaped fixed plate and the outer U-shaped fixed plate, and the heat exchange pipe is arranged on the vibration-proof piece.
[0013] Further, the vibration-proof piece comprises a first vibration-proof plate and a second vibration-proof plate, the first vibration-proof plate is installed on the inner U-shaped fixed plate, the second vibration-proof plate is installed on the outer U-shaped fixed plate, the last baffle is fixedly connected with a reinforcing rib extending along the circumference of the tail U-shaped bend pipe, and the reinforcing rib is fixedly connected with the first vibration-proof plate and the second vibration-proof plate.
[0014] Further, the first vibration-proof plate has a plurality of equal-angle arrangements, the second vibration-proof plate has a plurality of equal-angle arrangements, the plurality of first vibration-proof plates and the plurality of second vibration-proof plates are alternately distributed, the end of the inner U-shaped fixed plate is fixedly connected with the last first vibration-proof plate, and the end of the outer U-shaped fixed plate is fixedly connected with the last second vibration-proof plate.
[0015] Further, the thickness of the last baffle is greater than that of the penultimate baffle.
[0016] Compared with the prior art, the utility model has the following effects:
[0017] 1. The last baffle can retain the function of reversing the heat exchange medium, the mounting portion and the body are located in the same plane, one of the inner U-shaped fixed plate and the outer U-shaped fixed plate is fixedly connected with the body, and the other is fixedly connected with the mounting portion, so that the inner U-shaped fixed plate and the outer U-shaped fixed plate can be commonly installed on one last baffle, the starting points of the inner U-shaped fixed plate and the outer U-shaped fixed plate are the same, and the length is shorter, so that the heat exchange tube is not easily vibrated in the use process, thereby prolonging the service life of the heat exchanger.
[0018] 2. The shape of the through slot is the same as that of the mounting portion, so that the area of the through slot is maximized, the flowable area of the heat exchange medium is larger, and the heat exchange efficiency is improved.
[0019] 3. The hairpin heat exchanger tail anti-vibration structure provided by the utility model can fix the heat exchange pipe through the anti-vibration piece, avoids vibration of the heat exchange pipe, the length of the fixed plate is relatively short, the probability of vibration of the heat exchange pipe is further reduced, and the service life of the heat exchanger is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a schematic diagram of the overall structure of the hairpin heat exchanger tail anti-vibration structure of the utility model;
[0021] Figure 2 is Figure 1 the sectional view of A-A in figure 1;
[0022] Figure 3 is Figure 1 the sectional view of B-B in figure 1;
[0023] Figure 4 is Figure 1 the enlarged view of C area in figure 1;
[0024] Figure 5 is Figure 1 the enlarged view of D area in figure 1;
[0025] Figure 6 is Figure 1 the enlarged view of E area in figure 1;
[0026] Figure 7 is Figure 1 the enlarged view of F area in figure 1.
[0027] In the figure: 1, the body; 2, the mounting portion; 3, the through slot; 4, the inner U-shaped fixed plate; 5, the outer U-shaped fixed plate; 6, the shell; 7, the tail U-shaped elbow pipe; 8, the penultimate baffle; 9, the anti-vibration piece; 10, the first anti-vibration plate; 11, the second anti-vibration plate; 12, the reinforcing bar; 13, the heat exchange pipe. DETAILED DESCRIPTION
[0028] Specific implementation one: combine Figures 1 to 7 The utility model discloses a penultimate baffle, including the body 1, the body 1 is semicircular structure, the straight line section on the body 1 is connected with the mounting portion 2 that extends along the radial, and the mounting portion 2 with the body 1 is located the plane, and the mounting portion 2 has two sides through the through slot 3, and the purpose of the through slot 3 is to provide the space for the flow of heat exchange medium, one of the inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5 is fixedly connected with the body 1, and the other is fixedly connected with the mounting portion 2.
[0029] The through slot 3 can reserve the function of reversing the heat exchange medium for the final baffle plate, the mounting portion 2 and the body 1 are located in the same plane, one of the inner U-shaped fixing plate 4 and the outer U-shaped fixing plate 5 is fixedly connected with the body 1, and the other is fixedly connected with the mounting portion 2, so that the inner U-shaped fixing plate 4 and the outer U-shaped fixing plate 5 can be jointly installed on one final baffle plate, the starting points of the inner U-shaped fixing plate 4 and the outer U-shaped fixing plate 5 are the same, and the lengths are shorter, and the heat exchange tube 13 is not easy to vibrate in the use process, thereby prolonging the service life of the heat exchanger.
[0030] Specific implementation two: in combination Figure 1 , Figure 2 The mounting portion 2 of the embodiment is in a circular arc structure, which can be docked with the body 1, thereby forming a complete circular structure, and the mounting is more convenient. Of course, the above description is not restrictive, and as an alternative embodiment, the mounting portion 2 can also be in a rectangular structure. The other components and connection relationships are the same as those in the specific implementation one.
[0031] Specific implementation three: in combination Figure 1 , Figure 2 The through slot 3 of the embodiment is a semicircular slot, the shape of the through slot 3 is the same as that of the mounting portion 2, the area of the through slot 3 can be maximized, the flow area of the heat exchange medium is larger, and the heat exchange efficiency is improved. Of course, the above description is not restrictive, and as an alternative embodiment, the through slot 3 can also be a rectangular slot, a triangular slot, etc. The other components and connection relationships are the same as those in the specific implementation two.
[0032] Specific implementation four: in combination Figures 1 to 7The embodiment is described, and the embodiment further provides a hairpin heat exchanger tail anti-vibration structure, which comprises a shell 6, a tail U-shaped bend pipe 7, a penultimate baffle 8 and the last baffle described above. The last baffle is mounted on the inner wall of the shell 6 at the connection position of the tail U-shaped bend pipe 7. The penultimate baffle 8 is mounted on the inner wall of the shell 6 and located on the side of the last baffle away from the tail U-shaped bend pipe 7. The tail U-shaped bend pipe 7 is provided with an inner U-shaped fixed plate 4 and an outer U-shaped fixed plate 5. The inner U-shaped fixed plate 4 is located on the side with a smaller radius, and the outer U-shaped fixed plate 5 is located on the side with a larger radius. The inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5 are fixedly connected with the last baffle. Specifically, the inner U-shaped fixed plate 4 is connected with the body 1 of the last baffle, and the outer U-shaped fixed plate 5 is connected with the mounting portion 2 of the last baffle. The anti-vibration piece 9 is arranged between the inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5. The heat exchange pipe 13 is arranged on the anti-vibration piece 9. The anti-vibration piece 9 can fix the heat exchange pipe 13, avoid the vibration of the heat exchange pipe 13, and further reduce the probability of vibration of the heat exchange pipe 13 due to the short length of the fixed plate, thereby prolonging the service life of the heat exchanger. The other components and connection relationships are the same as those in any one of the first to third embodiments.
[0033] Embodiment five is combined with Figures 4 to 7 The embodiment is described, and the anti-vibration piece 9 of the embodiment comprises a first anti-vibration plate 10 and a second anti-vibration plate 11. The first anti-vibration plate 10 is mounted on the inner U-shaped fixed plate 4, and the second anti-vibration plate 11 is mounted on the outer U-shaped fixed plate 5. The last baffle is fixedly connected with a pull rod 12 extending along the circumference of the tail U-shaped bend pipe 7. The pull rod 12 is fixedly connected with the first anti-vibration plate 10 and the second anti-vibration plate 11. The pull rod 12 has a plurality of pull rods 12. The pull rod 12 plays a role of intermediate connection, connects the first anti-vibration plate 10 and the second anti-vibration plate 11 into a whole, and the volume of each part of the first anti-vibration plate 10 and the second anti-vibration plate 11 is smaller, facilitating installation and design. Of course, the above description is not limiting, and as an alternative embodiment, the anti-vibration piece 9 can also comprise only one anti-vibration plate. The other components and connection relationships are the same as those in the fourth embodiment.
[0034] Embodiment six is combined with Figure 1The first vibration-proof plate 10 has a plurality of equal angles, the second vibration-proof plate 11 has a plurality of equal angles, the plurality of first vibration-proof plates 10 and the plurality of second vibration-proof plates 11 are alternately distributed, the end of the inner U-shaped fixed plate 4 is fixedly connected with the last first vibration-proof plate 10, the end of the outer U-shaped fixed plate 5 is fixedly connected with the last second vibration-proof plate 11, the fixed points of the heat exchange pipe 13 are more, the vibration is less likely to occur, the stability is better, the heat expansion problems of the tube bundle and the vibration-proof structure are met, the service life of the vibration-proof structure is prolonged, and the materials of the inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5 can be carbon steel or stainless steel. Of course, the above description is not restrictive, as an alternative embodiment, the first vibration-proof plate 10 and the second vibration-proof plate 11 can also be provided with only one, and the fixing effect on the heat exchange pipe 13 is improved by increasing the thickness. The other components and connection relationships are the same as those in the fifth embodiment.
[0035] Seventh embodiment: Figure 1 In this embodiment, the thickness of the last-stage baffle is greater than that of the second-to-last-stage baffle 8. It should be noted that the thickness of the last-stage baffle and the second-to-last-stage baffle 8 is greater than that of other baffles in the shell 6. The last-stage baffle is the thickest, and the unsupported span of the tube bundle is increased. The other components and connection relationships are the same as those in any one of the fourth to sixth embodiments.
[0036] Working principle of the embodiment:
[0037] The inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5 are installed on the last-stage baffle, the through slot 3 on the last-stage baffle does not affect the flow of the heat exchange medium, the starting points of the inner U-shaped fixed plate 4 and the outer U-shaped fixed plate 5 are the same, and are closer to the tail U-shaped elbow pipe 7, so the length is shorter, and the vibration is less likely to occur. The heat exchange pipe 13 is reinforced by the first vibration-proof plate 10 and the second vibration-proof plate 11, so as to prolong the service life of the heat exchanger.
[0038] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A final collector comprising: The body (1) is a semicircular structure; The straight section on the body (1) is connected with a mounting portion (2) extending in the radial direction, the mounting portion (2) has a through slot (3) penetrating from both sides, one of the inner U-shaped fixed plate (4) and the outer U-shaped fixed plate (5) is fixedly connected with the body (1), and the other is fixedly connected with the mounting portion (2), and the through slot (3) is used for providing a flowing space for the heat exchange medium.
2. A final collector baffle as defined in claim 1, wherein The mounting portion (2) is a circular arc structure.
3. A final collector baffle as defined in claim 2 wherein, The through slot (3) is a semicircular groove.
4. A hairpin heat exchanger tail anti-vibration structure, characterized in that, Comprise: The shell (6), the tail U-shaped elbow pipe (7), the penultimate baffle (8) and the last baffle of any one of claims 1-3, the last baffle is installed on the inner wall of the shell (6) and the tail U-shaped elbow pipe (7) connection, the penultimate baffle (8) is installed on the inner wall of the shell (6) and located on the side of the last baffle away from the tail U-shaped elbow pipe (7); The tail U-shaped elbow pipe (7) is provided with an inner U-shaped fixed plate (4) and an outer U-shaped fixed plate (5), the inner U-shaped fixed plate (4) and the outer U-shaped fixed plate (5) are fixedly connected with the last baffle, and a vibration-proof piece (9) is arranged between the inner U-shaped fixed plate (4) and the outer U-shaped fixed plate (5), and a heat exchange pipe (13) is arranged on the vibration-proof piece (9).
5. The tail vibration isolation structure of the hairpin heat exchanger according to claim 4, characterized in that, The vibration-proof piece (9) comprises a first vibration-proof plate (10) and a second vibration-proof plate (11), the first vibration-proof plate (10) is installed on the inner U-shaped fixed plate (4), the second vibration-proof plate (11) is installed on the outer U-shaped fixed plate (5), the last baffle is fixedly connected with a reinforcing rib (12) extending in the circumferential direction of the tail U-shaped elbow pipe (7), and the reinforcing rib (12) is fixedly connected with the first vibration-proof plate (10) and the second vibration-proof plate (11).
6. The tail vibration isolation structure of the hairpin heat exchanger according to claim 5, wherein The first vibration-proof plate (10) has a plurality of equal angle arrangements, the second vibration-proof plate (11) has a plurality of equal angle arrangements, the plurality of first vibration-proof plates (10) and the plurality of second vibration-proof plates (11) are alternately distributed, the end of the inner U-shaped fixed plate (4) is fixedly connected with the last first vibration-proof plate (10), and the end of the outer U-shaped fixed plate (5) is fixedly connected with the last second vibration-proof plate (11).
7. The tail anti-vibration structure of a hairpin heat exchanger according to any one of claims 4-6, characterized in that, The thickness of the last baffle is greater than the thickness of the penultimate baffle (8).