A tube bundle heat exchanger

Abstract

The utility model belongs to heat exchanger technical field, specifically disclose a tube -bundle heat exchanger, including rear pipe box, the one side of rear pipe box is provided with front pipe box, is provided with the tube sheet between front pipe box and tube sheet, the one side fixedly connected with tube bundle of tube sheet is connected with tube sheet and tube bundle respectively to dismounting assembly, dismounting assembly includes the mounting piece fixedly connected in the one side of tube sheet, the number of mounting piece is set up to be multiple, multiple mounting piece is even distribution in the one side of tube sheet in the form of circumferential array array. The utility model discloses through setting up upper guide plate and lower guide plate, when carrying out dismounting to tube bundle, through upper guide plate and lower guide plate reduce the friction intensity between baffle and rear pipe box, the transverse section of upper guide plate, lower guide plate is smaller, thereby can reduce the transverse friction between rear pipe box, can obviously promote the convenient degree of taking out tube bundle from rear pipe box with the cooperation with gyro wheel simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a tube bundle heat exchanger. Background Technology

[0002] Tube bundle heat exchangers, also known as shell-and-tube heat exchangers, are indirect heat exchangers that use the walls of tube bundles enclosed in a shell as the heat transfer surface. These heat exchangers are simple in structure, low in cost, have a wide flow cross-section, are easy to clean of scale, and can be manufactured using various structural materials (mainly metals). They can be used under high temperature and high pressure and are the most widely used type. Tube bundle heat exchangers transfer heat through the tube walls. According to the different structures of the heat transfer tubes, they can be divided into several types, such as shell-and-tube heat exchangers, coaxial tube heat exchangers, serpentine tube heat exchangers, and finned tube heat exchangers. Tube bundle heat exchangers are the most widely used. Currently, when disassembling, maintaining, or cleaning tube bundle heat exchangers, it is necessary to remove the tube bundles inside the heat exchanger. During the disassembly process, the tube bundles are heavy, making it difficult to pull them. Furthermore, since the baffles on the outside of the tube bundles are in direct contact with the inner wall of the rear tube box, significant friction occurs between the baffles and the inner wall of the rear tube box when pulling the tube bundles out. This makes it difficult to remove the tube bundles and affects the maintenance efficiency of the heat exchanger. Therefore, to address this problem, this application provides a tube bundle heat exchanger to meet the requirements. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tube bundle heat exchanger.

[0004] To achieve the above objectives, this utility model provides a tube bundle heat exchanger, including a rear tube box, a front tube box disposed on one side of the rear tube box, a tube sheet disposed between the front tube box and the tube sheet, a tube bundle fixedly connected to one side of the tube sheet, and a disassembly assembly for disassembling the tube bundle. The disassembly assembly is connected to the tube sheet and the tube bundle respectively. The disassembly assembly includes mounting components fixedly connected to one side of the tube sheet. The number of mounting components is set to multiple, and the multiple mounting components are evenly distributed in a circumferential array on one side of the tube sheet. A support ring is fixedly connected to one end of the multiple mounting components, and a lower baffle is fixedly connected to the inner side of the support ring.

[0005] In the above technical solution, the lower baffle is sleeved on the outside of the mounting component, and an upper guide plate and a lower guide plate are fixedly connected to one side of the support ring. The upper guide plate and the lower guide plate are arranged in an axisymmetric manner about the horizontal center plane of the rear tube box.

[0006] In the above technical solution, the inner wall of the rear tube box is provided with a guide rail groove, and the upper guide plate and the lower guide plate are slidably connected to the inner side of the guide rail groove.

[0007] In the above technical solution, further, an installation block is fixedly connected to the bottom of the upper guide plate, an upper baffle is sleeved on the outer side of the installation block, a fixing bolt is slidably connected to the inner side of the upper baffle, the fixing bolt is inserted into the interior of the installation block, and the upper baffle is sleeved on the outer side of the tube bundle.

[0008] In the above technical solution, a lifting ring is further provided at the bottom of the upper guide plate, and the number of the lifting rings is set to multiple, with the multiple lifting rings evenly distributed at the bottom of the upper guide plate.

[0009] In the above technical solution, further, one end of the upper guide plate and the lower guide plate are fixedly connected to a guide tail plate, the guide tail plate is slidably connected to the inner side of the guide rail groove, and a reinforcing ring is fixedly connected inside the upper guide plate and the lower guide plate.

[0010] In the above technical solution, the lower guide plate is further provided with a roller rotatably connected inside, and the roller is slidably connected to the inner side of the guide rail groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention, by setting up upper and lower guide plates, allows the tube bundle to be pulled out from the inside of the rear tube box during disassembly. Since the highest point of the upper guide plate is higher than the upper baffle plate and the lowest point of the lower guide plate is lower than the lower baffle plate, the friction intensity between the baffle plate and the rear tube box is reduced by the upper and lower guide plates, thereby reducing the wear of the baffle plate. The upper and lower guide plates have small lateral cross sections, which reduces lateral friction with the rear tube box. At the same time, multiple rollers are set inside the lower guide plate. The rotation of the rollers further reduces the difficulty of removing the tube bundle due to friction when pulling it out, thus significantly improving the convenience of removing the tube bundle from the rear tube box.

[0012] 2. This utility model, by setting guide tail plates, allows for the installation of the tube bundle after maintenance. By inserting two guide tail plates into the guide rail groove of the rear tube box, and since the length between the two guide tail plates is less than the diameter of the rear tube box, it is easy for the guide tail plates to coincide with the guide rail groove of the rear tube box, thereby achieving the purpose of positioning the tube bundle. Furthermore, the inclined surface of the guide tail plates makes it easier for the upper and lower guide plates to enter the guide rail groove of the rear tube box, making it more convenient for the tube bundle to enter the rear tube box, thus reducing the difficulty of tube bundle installation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a tube bundle heat exchanger. Figure 2 This is a three-dimensional structural diagram of the mounting component and the support ring; Figure 3 for Figure 2Enlarged view of the A-section structure; Figure 4 This is a front structural cross-sectional view of a tube bundle heat exchanger.

[0014] In the diagram: 1. Rear tube box; 2. Front tube box; 3. Tube sheet; 4. Mounting component; 5. Support ring; 6. Lower baffle; 7. Upper guide plate; 8. Lower guide plate; 9. Upper baffle; 10. Mounting block; 11. Fixing bolt; 12. Lifting ring; 13. Guide tail plate; 14. Reinforcing ring; 15. Roller; 16. Tube bundle. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1-4 The tube bundle heat exchanger shown includes a rear tube box 1, a front tube box 2 on one side of the rear tube box 1, a tube sheet 3 between the front tube box 2 and the tube sheet 3, and the rear tube box 1, the front tube box 2, and the tube sheet 3 are fixed together by multiple bolts. A tube bundle 16 is fixedly connected to one side of the tube sheet 3. A disassembly assembly is used to disassemble the tube bundle 16. The disassembly assembly is connected to the tube sheet 3 and the tube bundle 16 respectively. The disassembly assembly includes mounting parts 4 fixedly connected to one side of the tube sheet 3. The number of mounting parts 4 is set to multiple. The multiple mounting parts 4 are evenly distributed in a circumferential array on one side of the tube sheet 3. The multiple mounting parts 4 are connected to the tube sheet 3 by bolts. A support ring 5 is fixedly connected to one end of the multiple mounting parts 4. The support ring 5 is circular. A lower baffle 6 is fixedly connected to the inner side of the support ring 5. The lower baffle 6 is sleeved on the outer side of the mounting part 4.

[0017] An upper guide plate 7 and a lower guide plate 8 are fixedly connected to one side of the support ring 5. The upper guide plate 7 and the lower guide plate 8 are arranged symmetrically about the horizontal center plane of the rear tube box 1. The upper guide plate 7 and the lower guide plate 8 coincide with the vertical center axis of the rear tube box 1. The upper guide plate 7 and the lower guide plate 8 are respectively located above and below the tube bundle 16. A guide rail groove is opened on the inner wall of the rear tube box 1. The upper guide plate 7 and the lower guide plate 8 are slidably connected to the inner side of the guide rail groove. An installation block 10 is fixedly connected to the bottom of the upper guide plate 7. An upper baffle plate 9 is sleeved on the outer side of the installation block 10. A fixing bolt 11 is slidably connected to the inner side of the upper baffle plate 9. The fixing bolt 11 is inserted into the inside of the installation block 10. The upper baffle plate 9 is sleeved on the outer side of the tube bundle 16. A lifting ring 12 is provided at the bottom of the upper guide plate 7. The number of lifting rings 12 is set to multiple, and the multiple lifting rings 12 are evenly distributed at the bottom of the upper guide plate 7. One end of the upper guide plate 7 and the lower guide plate 8 are fixedly connected to the guide tail plate 13. The guide tail plate 13 is slidably connected to the inner side of the guide rail groove. The guide tail plate 13 is divided into two parts: an inclined block and a straight block. The inclined block part is connected to the upper guide plate 7 or the lower guide plate 8, and the straight block part is connected to the end of the inclined block away from the upper guide plate 7 or the lower guide plate 8. The bottom planes of the inclined block and the straight block are at the same horizontal plane. The upper guide plate 7 and the lower guide plate 8 are fixedly connected to the inside of the guide plate 7. The reinforcing ring 14 can improve the stability of the connection between the upper guide plate 7 and the lower guide plate 8. The lower guide plate 8 is rotatably connected to the inside of the guide rail groove. The roller 15 is slidably connected to the inner side of the guide rail groove.

[0018] It should be noted that, during the disassembly of the tube bundle 16, the tube bundle 16 is pulled out from the inside of the rear tube box 1 by pulling the tube plate 3. Since the highest point of the upper guide plate 7 is higher than the upper baffle 9, and the lowest point of the lower guide plate 8 is lower than the lower baffle 6, the strength of the direct contact between the upper guide plate 7 and the lower guide plate 8 and the baffle 9 and the rear tube box 1 is reduced. Furthermore, the portions of the upper guide plate 7 and the lower guide plate 8 that extend beyond the baffle 9 slide within the guide rail groove. Multiple baffle 9 and the rear tube box 1 are also in contact with each other, thus not affecting the sealing performance between the baffle 9 and the rear tube box 1. The lower guide plate 8 provides support, thereby reducing the friction intensity between the baffle 9 and the rear tube box 1, and thus reducing the wear of the baffle 9. Additionally, the upper guide plate 7 and the lower guide plate 8 are parallel to the horizontal axis of the rear tube box 1, and the transverse cross-sections of the upper guide plate 7 and the lower guide plate 8 are relatively small, thus reducing the wear intensity. The lower guide plate 7 reduces lateral friction with the rear tube box 1, thereby reducing the sliding difficulty of the upper guide plate 7 and the lower guide plate 8. At the same time, the lower guide plate 8 is equipped with multiple rollers 15. When the lower guide plate 8 slides in the guide rail groove, the multiple rollers 15 rotate synchronously, thereby further reducing the difficulty of removing the tube bundle 16 due to friction. This significantly improves the ease of removing the tube bundle 16 from the rear tube box 1. Meanwhile, the upper guide plate 7, the lower guide plate 8 and the tube bundle 16 are largely overlapped. Thus, during most of the process of removing the tube bundle 16, the upper guide plate 7 and the lower guide plate 8 remain connected to the rear tube box 1. This avoids the phenomenon of the tube bundle 16 shifting or tilting due to the lack of baffle support in some positions when the upper guide plate 7 and the lower guide plate 8 are not set, thereby further reducing the difficulty of removing the tube bundle 16.

[0019] When installing the tube bundle 16 after maintenance, the two guide tail plates 13 are inserted into the guide rail groove of the rear tube box 1. Since the length between the two guide tail plates 13 is less than the diameter of the rear tube box 1, it is easy for the guide tail plates 13 to coincide with the guide rail groove of the rear tube box 1, thereby achieving the purpose of positioning the tube bundle 16. Furthermore, the inclined surface of the guide tail plates 13 makes it easier for the upper guide plate 7 and the lower guide plate 8 to enter the guide rail groove of the rear tube box 1, making it more convenient for the tube bundle 16 to enter the rear tube box 1, thus reducing the difficulty of installing the tube bundle 16.

[0020] Working principle: When disassembling the tube bundle 16, all bolts securing the rear tube box 1, front tube box 2, and tube sheet 3 are removed, and then the front tube box 2 is separated from the tube sheet 3. At this point, the tube bundle 16 can be pulled out from the inside of the rear tube box 1 by pulling the tube sheet 3. The upper guide plate 7 and lower guide plate 8 are parallel to the horizontal axis of the rear tube box 1. The lateral cross-sections of the upper guide plate 7 and lower guide plate 8 are small, thereby reducing lateral friction with the rear tube box 1 and reducing the difficulty of sliding the upper guide plate 7 and lower guide plate 8. At the same time, multiple rollers 15 are provided inside the lower guide plate 8. When the lower guide plate 8 slides in the guide groove, the multiple rollers 15 rotate synchronously, further reducing the difficulty of removing the tube bundle 16 due to friction. This significantly improves the convenience of removing the tube bundle 16 from the rear tube box 1. Meanwhile, the upper guide plate 7, lower guide plate 8, and tube bundle 16 are largely overlapped. Thus, during most of the process of removing the tube bundle 16, the upper guide plate 7 and the lower guide plate 8 remain connected to the rear tube box 1. This avoids the phenomenon of the tube bundle 16 shifting or tilting due to the lack of baffle support in some positions when the upper guide plate 7 and the lower guide plate 8 are not installed, thereby further reducing the difficulty of removing the tube bundle 16. When installing the tube bundle 16 after maintenance, the two guide tail plates 13 are inserted into the guide rail groove of the rear tube box 1. Since the length between the two guide tail plates 13 is less than the diameter of the rear tube box 1, it is easy for the guide tail plates 13 to coincide with the guide rail groove of the rear tube box 1, thereby achieving the purpose of positioning the tube bundle 16. Furthermore, the inclined surface of the guide tail plates 13 makes it easier for the upper guide plate 7 and the lower guide plate 8 to enter the guide rail groove of the rear tube box 1, making it more convenient for the tube bundle 16 to enter the rear tube box 1, thereby reducing the difficulty of installing the tube bundle 16.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tube bundle heat exchanger, comprising a rear tube box (1), characterized in that, A front tube box (2) is provided on one side of the rear tube box (1), and a tube plate (3) is provided between the front tube box (2) and the tube plate (3). A tube bundle (16) is fixedly connected to one side of the tube plate (3). The disassembly assembly is used to disassemble the tube bundle (16). The disassembly assembly is connected to the tube sheet (3) and the tube bundle (16) respectively. The disassembly assembly includes a mounting component (4) fixedly connected to one side of the tube sheet (3). The number of mounting components (4) is set to multiple. The multiple mounting components (4) are evenly distributed in a circular array on one side of the tube sheet (3). One end of the multiple mounting components (4) is fixedly connected to a support ring (5). The inner side of the support ring (5) is fixedly connected to a lower baffle plate (6).

2. A tube bundle heat exchanger according to claim 1, characterized in that, The lower baffle (6) is sleeved on the outside of the mounting part (4), and the upper guide plate (7) and the lower guide plate (8) are fixedly connected to one side of the support ring (5). The upper guide plate (7) and the lower guide plate (8) are arranged in an axisymmetric manner about the horizontal center plane of the rear tube box (1).

3. A tube bundle heat exchanger according to claim 2, characterized in that, The inner wall of the rear tube box (1) is provided with a guide rail groove, and the upper guide plate (7) and the lower guide plate (8) are slidably connected to the inner side of the guide rail groove.

4. A tube bundle heat exchanger according to claim 3, characterized in that, The bottom of the upper guide plate (7) is fixedly connected to an installation block (10), and an upper baffle plate (9) is sleeved on the outside of the installation block (10). A fixing bolt (11) is slidably connected to the inside of the upper baffle plate (9). The fixing bolt (11) is inserted into the inside of the installation block (10), and the upper baffle plate (9) is sleeved on the outside of the tube bundle (16).

5. A tube bundle heat exchanger according to claim 4, characterized in that, The bottom of the upper guide plate (7) is provided with a lifting ring (12), and the number of the lifting rings (12) is set to multiple, and the multiple lifting rings (12) are evenly distributed at the bottom of the upper guide plate (7).

6. A tube bundle heat exchanger according to claim 3, characterized in that, One end of the upper guide plate (7) and the lower guide plate (8) are fixedly connected to a guide tail plate (13), the guide tail plate (13) is slidably connected to the inner side of the guide rail groove, and a reinforcing ring (14) is fixedly connected inside the upper guide plate (7) and the lower guide plate (8).

7. A tube bundle heat exchanger according to claim 3, characterized in that, The lower guide plate (8) is rotatably connected to a roller (15), which is slidably connected to the inside of the guide rail groove.

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