Heat exchanger

Abstract

The utility model relates to a heat exchanger, including: tube plate, shell, sleeve, longitudinal partition plate, baffle plate, pull rod and heat exchange tube, shell includes short shell section and long shell section, short shell section one end is welded with the tube plate, short shell section other end is welded with long shell section, sleeve includes upper Haver sleeve and lower Haver sleeve, and the upper Haver sleeve and lower Haver sleeve are welded with each other. The longitudinal partition plates comprise the first longitudinal partition plate and the second longitudinal partition plate which are stacked and welded together, the first longitudinal partition plate is welded to the upper Haver sleeve, the second longitudinal partition plate is welded to the lower Haver sleeve, and the first longitudinal partition plate and the second longitudinal partition plate are further welded to the inner wall of the short shell section at the same time. The free tail end of the upper half sleeve is welded to the inner wall of the short shell section through an upper half semicircular ring, the free tail end of the lower half sleeve is welded to the inner wall of the short shell section through a lower half semicircular ring, and a plurality of round steel pieces are welded to the outer circumferential face of the sleeve, so that the sleeving difficulty of the shell is greatly reduced, and the service life of the shell is prolonged. And the production efficiency is improved.

Description

[Technical Field]

[0001] This utility model relates to the field of heat exchangers, and more particularly to a heat exchanger with a longitudinal partition plate. [Background Technology]

[0002] Indirect heat exchangers allow two fluids at different temperatures to flow within a space separated by a wall. Heat exchange occurs between the two fluids through heat conduction at the wall and convection at the wall surface. Indirect heat exchangers include shell-and-tube, coaxial, and other types. They are currently the most widely used type of heat exchanger. Shell-and-tube heat exchangers mainly consist of a shell, tube bundle, baffles, and end caps. The shell is often circular, containing parallel or spiral tube bundles fixed to tube sheets at both ends. In a shell-and-tube heat exchanger, one fluid flows inside the tubes (the tube side) and the other flows outside (the shell side). A longer shell side results in a higher convective heat transfer coefficient, which is more favorable for the heat transfer process. To increase the shell side, a longitudinal baffle is usually placed in the center of the shell, dividing it into upper and lower parts. In current technology, during installation, several pressing mechanisms 1' (for the structure of pressing mechanism 1', please refer to...) are first installed... Figure 1 The longitudinal partition 2' is installed on both sides. Then, the ends of the longitudinal partition are welded to the end walls of the tube sheet to form a whole. Finally, the shell is fitted from one end of the tube sheet onto the outside of the longitudinal partition and welded to the end wall of the tube sheet. After installation, the pressing mechanism abuts against the inner wall of the shell. The disadvantage of this type of heat exchanger is that the presence of the pressing mechanism on both sides of the longitudinal partition makes it difficult to fit the shell, which greatly reduces the working efficiency. In addition, due to the limitations of the existing heat exchanger structure, the pressing mechanism on both sides of the longitudinal partition cannot be removed. Removing it would result in an unreliable positioning between the longitudinal partition and the shell.

[0003] Therefore, we considered how to solve this technical problem by improving the structure of the heat exchanger. [Utility Model Content]

[0004] To address the aforementioned problems, the purpose of this invention is to provide a heat exchanger that reduces the difficulty of shell assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A heat exchanger includes a tube sheet, a shell, a sleeve, longitudinal baffles, baffles, tie rods, and heat exchange tubes. The shell includes a short shell section and a long shell section. One end of the short shell section is welded to the tube sheet, and the other end of the short shell section is welded to the long shell section. The sleeve is disposed inside the shell and includes an upper Hafer sleeve and a lower Hafer sleeve. The longitudinal baffles include a first longitudinal baffle and a second longitudinal baffle stacked and welded together. The first longitudinal baffle is welded to the upper Hafer sleeve, and the second longitudinal baffle is welded to the lower Hafer sleeve. The first and second longitudinal baffles are also welded to the inner wall of the short shell section. The free end of the upper Hafer sleeve is welded to the inner wall of the short shell section through an upper Hafer semicircular ring, and the free end of the lower Hafer sleeve is welded to the inner wall of the short shell section through a lower Hafer semicircular ring. Several round steel parts are welded to the outer circumference of the sleeve.

[0006] Preferably, a heat exchanger in this utility model is further configured such that: the first longitudinal partition is disposed above the second longitudinal partition, the first longitudinal partition has a plurality of plug welding holes, and the first longitudinal partition and the second longitudinal partition are connected by plug welding.

[0007] Preferably, the heat exchanger of the present invention is further configured such that: the upper surface of the first longitudinal partition is welded to the end face of the upper Haval sleeve, and the lower surface of the second longitudinal partition is welded to the end face of the lower Haval sleeve.

[0008] Preferably, a heat exchanger in this invention is further configured such that the sidewalls of the first longitudinal partition and the second longitudinal partition are welded to the inner wall of the short shell section.

[0009] Preferably, a heat exchanger in this invention is further configured such that several round steel parts are evenly distributed along the circumference of the sleeve.

[0010] Preferably, one of the heat exchangers in this utility model is further configured such that the free end of the round steel part is provided with a guide slope.

[0011] Preferably, the heat exchanger of the present invention is further configured such that both the first longitudinal partition and the second longitudinal partition are arranged horizontally.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention has made the following improvements compared with the prior art: First, the single longitudinal partition in the prior art is improved into two longitudinal partitions welded together. Then, a Haver structure sleeve is added inside the shell, so that the sleeve, the longitudinal partition and the short shell section are welded into a whole. Finally, the long shell section is put on and welded to the short shell section. After the above structural improvements, the assembly difficulty is greatly reduced and the production efficiency is improved. At the same time, the structural strength of the longitudinal partition is also greatly improved. [Attached Image Description]

[0013] Figure 1 This is a schematic diagram of the installation structure of the tablet pressing mechanism and the longitudinal partition in the prior art.

[0014] Figure 2 This is a schematic diagram of the heat exchanger in this utility model, showing the situation after the long shell section is removed.

[0015] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 For along Figure 2 A schematic diagram of the cross-sectional structure along line BB.

[0017] Figure 5 This is a schematic diagram of the heat exchanger in this utility model, showing the structure after the long shell section is installed.

[0018] Figure 6 For along Figure 5 A schematic diagram of the cross-sectional structure of the CC line shown.

[0019] Figure 7 Schematic diagram of the free end of a round steel component

[0020] Figure 1 In the middle: 1', tablet compression mechanism, 2', longitudinal partition.

[0021] Figures 2 to 7 In the middle: 1. Tube sheet, 2. Shell, 20. Short shell section, 21. Long shell section, 3. Sleeve, 30. Upper Haval sleeve, 300. End face of upper Haval sleeve, 31. Lower Haval sleeve, 310. End face of lower Haval sleeve, 32. Round steel part, 320. Guide slope, 4. Longitudinal partition, 40. First longitudinal partition, 400. Plug weld hole, 401. Side wall of first longitudinal partition, 41. Second longitudinal partition, 410. Side wall of second longitudinal partition, 5. Baffle plate, 6. Tie rod, 7. Heat exchange tube, 8. Upper Haval semi-circular ring, 9. Lower Haval semi-circular ring.

Detailed Implementation Methods

[0022] The following further describes in detail a heat exchanger according to the present utility model through specific embodiments.

[0023] Refer Figures 2 to 7 As shown, a heat exchanger includes: a tube sheet 1, a shell 2, a sleeve 3, a longitudinal partition 4, a baffle 5, a tie rod 6, and heat exchange tubes 7. Since the structures of the baffle 5, the tie rod 6, and the heat exchange tubes 7 belong to the prior art in this field, they will not be described in detail herein.

[0024] The shell 2 includes a short shell section 20 and a long shell section 21. The left end of the short shell section 20 is welded to the end face of the tube sheet 1, and the right end of the short shell section 20 is welded to the long shell section 21. The sleeve 3 is disposed inside the shell 2. The sleeve 3 includes an upper half sleeve 30 and a lower half sleeve 31. The longitudinal partition 4 includes a first longitudinal partition 40 and a second longitudinal partition 41 that are stacked and welded together. Both the first longitudinal partition 40 and the second longitudinal partition 41 are horizontally arranged. The first longitudinal partition 40 is disposed above the second longitudinal partition 41. In this embodiment, a plurality of plug weld holes 400 are provided on the first longitudinal partition 40, and plug welding is used between the first longitudinal partition 40 and the second longitudinal partition 41. Please refer to Figure 4 , the upper surface of the first longitudinal partition 40 is welded to the end face 300 of the upper half sleeve 30, and the lower surface of the second longitudinal partition 41 is welded to the end face 310 of the lower half sleeve 31. After adopting such a welding structure, there is a certain gap between the sleeve 3 and the inner wall of the shell 2, so it is relatively easy to sleeve the long shell section 21. Please refer to Figure 6 , the side wall 401 of the first longitudinal partition 40 and the side wall 410 of the second longitudinal partition 41 are respectively welded to the inner wall of the short shell section 20. The free end of the upper half sleeve 30 is welded to the inner wall of the short shell section 20 through an upper half ring 8, and the free end of the lower half sleeve 31 is welded to the inner wall of the short shell section 20 through a lower half ring 9. A plurality of round steel members 32 are welded on the outer circumferential surface of the sleeve 3. The plurality of round steel members 32 are evenly distributed along the circumferential direction of the sleeve 3. The free end of the round steel member 32 is provided with a guiding inclined surface 320, which can play a guiding role when sleeving the long shell section 21. The round steel member 32 has two functions. One is a limiting function, and the other is to act as a reinforcing rib for the sleeve 3 to improve the structural strength of the sleeve 3 and prevent the sleeve from being crushed by the heat exchange tubes 7.

[0025] In summary, this utility model has made the following improvements compared with the prior art: First, the single longitudinal partition in the prior art is improved into two longitudinal partitions welded together. Then, a Haver-structured sleeve is added inside the shell, so that the sleeve, longitudinal partition, and short shell section are welded into a whole. Finally, the long shell section is then fitted on and welded to the short shell section. After the above structural improvements, the assembly difficulty is greatly reduced, the production efficiency is improved, and the structural strength of the longitudinal partition is also greatly improved.

[0026] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A heat exchanger, characterized by: The application relates to a heat exchanger, which comprises a tube plate, a shell, a sleeve, a longitudinal partition plate, a baffle plate, a pull rod and a heat exchange tube, wherein the shell comprises a short shell section and a long shell section, one end of the short shell section is welded with the tube plate, the other end of the short shell section is welded with the long shell section, the sleeve is arranged in the shell, the sleeve comprises an upper harver sleeve and a lower harver sleeve, the longitudinal partition plate comprises a first longitudinal partition plate and a second longitudinal partition plate which are stacked and welded together, the first longitudinal partition plate is welded with the upper harver sleeve, the second longitudinal partition plate is welded with the lower harver sleeve, the first longitudinal partition plate and the second longitudinal partition plate are simultaneously welded with the inner wall of the short shell section, the free end of the upper harver sleeve is welded with the inner wall of the short shell section through an upper harver semicircular ring, the free end of the lower harver sleeve is welded with the inner wall of the short shell section through a lower harver semicircular ring, and a plurality of round steel pieces are welded on the outer circumferential surface of the sleeve. The first longitudinal partition plate is arranged above the second longitudinal partition plate, a plurality of plug welding holes are arranged on the first longitudinal partition plate, and plug welding is adopted between the first longitudinal partition plate and the second longitudinal partition plate.

2. A heat exchanger as claimed in claim 1, wherein: The upper surface of the first longitudinal partition plate is welded with the end surface of the upper harver sleeve, and the lower surface of the second longitudinal partition plate is welded with the end surface of the lower harver sleeve.

3. A heat exchanger as claimed in claim 1, wherein: The side wall of the first longitudinal partition plate and the side wall of the second longitudinal partition plate are respectively welded with the inner wall of the short shell section.

4. A heat exchanger as claimed in claim 1, wherein: The plurality of round steel pieces are uniformly distributed along the circumferential direction of the sleeve.

5. A heat exchanger as claimed in claim 1, wherein: The free end of the round steel piece is provided with a guide inclined surface.

6. A heat exchanger as claimed in claim 1, wherein: The first longitudinal partition plate and the second longitudinal partition plate are both arranged in a horizontal shape.

7. A heat exchanger as claimed in claim 1, wherein: ​

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