Novel fixed tube plate type kettle type reboiler

Abstract

The utility model belongs to the technical field of reboilers, and particularly discloses a novel fixed tube plate type kettle-type reboiler which comprises a shell, the left end and the right end of the shell are connected with a left tube box and a right tube box respectively, and a tube bundle assembly is installed in the shell. The tube bundle assembly comprises a heat exchange tube and a supporting plate assembly used for supporting the heat exchange tube, and the supporting plate assembly is composed of a circular supporting plate and an arch-shaped baffle plate. The heat exchange tubes penetrate through and are erected on the circular supporting plates and the arch-shaped baffle plates, and effective supporting of the heat exchange tubes is achieved. The circular supporting plates are arranged on the two sides of the arch-shaped baffle plate, so that the stability of the structure is enhanced. Particularly, the upper portions of the arch-shaped baffle plates are smoothed, the arc-shaped opening of at least one arch-shaped baffle plate faces forwards, and the arc-shaped opening of at least one arch-shaped baffle plate faces backwards. Surface contact can be formed between the arch-shaped baffle plates and the two sides of the inner side wall of the shell, so that shaking is prevented; the fluid flowing path is optimized, the heat transfer efficiency is improved, and meanwhile the overall structural stability of equipment is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reboilers, and specifically relates to a novel fixed tube plate kettle reboiler. Background Art

[0002] Kettle reboilers are widely used in petrochemical, oil refining and other processes. The tube bundle of the kettle reboiler can be a floating head type, a U-tube type, or a fixed tube sheet type structure. Its core function is to achieve the re-gasification (or "reboiling") of the liquid by providing heat. As a special heat exchanger, the kettle reboiler has different diameters of the large end cylinder and the small end cylinder of the shell side. It can not only effectively exchange heat, but also provide a sufficient vaporization space for the shell side fluid, ensuring that when part of the liquid is converted into gas by heat, the system can accommodate this phase change without causing excessive pressure or other problems.

[0003] The structure of a conventional fixed tube sheet kettle reboiler consists of a left tube box, a tube bundle, a shell, and a right tube box. The tube bundle consists of a left tube sheet, a heat exchange tube, a full support plate, a tie rod, a distance tube, and a right tube sheet; the shell consists of a small end cylinder, a cone section, a large end cylinder, etc. The support plate of the tube bundle of a conventional fixed tube sheet kettle reboiler structure is generally a full support plate, and is designed according to the diameter of the small end cylinder as the nominal diameter. When the tube bundle is installed in the shell side cylinder, the full support plate and the shell side large end cylinder present an eccentric structure. The gap between the full support plate and the shell side cylinder is large, and the support area is small. During transportation or installation, the full support plate is prone to radial shaking and swinging due to eccentricity, resulting in increased stress on the heat exchanger tube head, pulling off between the tube sheet and the heat exchange tube, resulting in tube head leakage, and then mixing of the shell and tube side fluids, which may cause the entire process to produce impure products, stop or lag chemical reactions, and other problems, affecting the operation of the entire device. Utility Model Content

[0004] Aiming at the problem that the tube bundle and the shell are prone to pulling out and shaking during the transportation or installation of the full support plate equipment in the prior art, a new type of fixed tube plate kettle reboiler is proposed. The utility model provides the following technical solutions:

[0005] A novel fixed tube plate kettle reboiler comprises a shell, wherein the left and right ends of the shell are respectively connected to a left tube box and a right tube box, a tube bundle assembly is installed in the shell, the tube bundle assembly comprises a heat exchange tube and a support plate assembly for supporting the heat exchange tube, the support plate assembly comprises a circular support plate and an arched baffle, the heat exchange tube passes through and is mounted on the circular support plate and the arched baffle; the circular support plates are arranged on both sides of the arched baffle, the upper part of the arched baffle is flattened, and there is at least one arched baffle with an arcuate opening arranged forward, and there is at least one arched baffle with an arcuate opening arranged backward.

[0006] Preferably, the circular support plate comprises a left support plate and a right support plate, and each of the left support plate and the right support plate is provided with one.

[0007] Preferably, each arched baffle is symmetrically arranged on the left and right sides.

[0008] Preferably, the arc-shaped openings of adjacent arcuate baffles are arranged opposite to each other.

[0009] Preferably, the arcuate baffles are arranged in parallel with each other, and the centers of circles corresponding to the arc edges of the arcuate baffles are located on the same axis.

[0010] Preferably, an even number of the arcuate baffles are provided, with the odd-numbered arcuate baffles from left to right being arranged toward the same side, and the even-numbered arcuate baffles being arranged toward the other side.

[0011] Preferably, the side edge of the arcuate baffle includes an arcuate portion, a straight portion connected to the upper side of the arcuate portion, and a vertical portion connected between the arcuate portion and the straight portion, and the straight portion and the vertical portion are arranged perpendicular to each other.

[0012] Preferably, the circumferential angle corresponding to the arc portion is greater than ninety degrees and less than one hundred and eighty degrees.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The upper part of the arcuate baffle is flattened, and at least one arcuate baffle has an arcuate opening facing forward, and at least one arcuate baffle has an arcuate opening facing backward. A nearly complete circular projection can be formed in the normal direction of the arcuate baffle, forming surface contact with both sides of the inner wall of the shell to prevent shaking; the fluid flow path is optimized, the heat transfer efficiency is improved, and the overall structural stability of the equipment is also strengthened. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model from the front view;

[0016] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the arcuate baffle of the utility model;

[0018] Figure 4 It is a schematic diagram of the arrangement structure of the arcuate baffle of the utility model;

[0019] Figure 5 It is another schematic diagram of the arrangement structure of the arcuate baffle of the utility model;

[0020] In the accompanying drawings, 1, shell; 21, left tube box; 22, right tube box; 3, tube bundle assembly; 31, circular support plate; 32, arched baffle; 321, first arched plate; 322, second arched plate; 323, third arched plate; 324, fourth arched plate; 33, heat exchange tube; 301, arc portion; 302, straight portion; 303, vertical portion; 4, support seat. DETAILED DESCRIPTION

[0021] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0022] Embodiment 1:

[0023] like Figure 1-5 As shown, this embodiment provides a new type of fixed tube plate kettle reboiler, including a shell 1, wherein the left and right ends of the shell 1 are respectively connected to a left tube box 21 and a right tube box 22, and a tube bundle assembly 3 is installed in the shell 1; the tube bundle assembly 3 includes a plurality of heat exchange tubes 33 and a support plate assembly for supporting the heat exchange tubes 33, and the support plate assembly is composed of a circular support plate 31 and an arched baffle 32. The heat exchange tubes 33 pass through and are mounted on the circular support plate 31 and the arched baffle 32, thereby achieving effective support for the heat exchange tubes 33. The circular support plates 31 are arranged on both sides of the arched baffle 32, thereby enhancing the stability of the structure. In particular, the upper part of the arched baffle 32 is flattened, and at least one arched baffle 32 has an arcuate opening facing forward, and at least one arched baffle 32 has an arcuate opening facing backward. It is possible to form a nearly complete circular projection in the normal direction of the bow-shaped baffle 32, forming surface contact with both sides of the inner wall of the shell 1 to prevent shaking; it optimizes the fluid flow path, improves the heat transfer efficiency, and also strengthens the overall structural stability of the equipment.

[0024] Specifically, the left and right ends of the shell 1 are connected to the left pipe box 21 and the right pipe box 22 respectively, and the connection method adopts bolts and nuts to ensure the firmness of the connection. The shell 1 is provided with a shell inlet on the upper left side and a shell outlet on the lower right side. The reasonable inlet and outlet layout ensures the smooth flow of the fluid and improves the heat transfer effect. In addition, the lower sides of the left pipe box 21 and the right pipe box 22 are also provided with outlets, which are convenient for the discharge of the fluid. A support seat 4 is also provided on the lower side of the shell 1 to further enhance the stability of the equipment.

[0025] The circular support plate 31 includes a left end support plate and a right end support plate, each of which is provided one at a time, so as to effectively prevent the heat exchange tube 33 from vibrating and shifting during operation, and further enhance the stability of the heat exchange tube 33 .

[0026] The arc-shaped openings of adjacent arcuate baffles 32 are arranged opposite to each other to form a complex flow path, thereby increasing the contact time between the fluid and the heat exchange tubes 33, thereby improving the heat transfer efficiency.

[0027] The arcuate baffles 32 are arranged in parallel at intervals, and the centers of the circles corresponding to their arc edges are located on the same axis. This layout ensures the consistency and neatness of the baffles, facilitates manufacturing and installation, and is also conducive to the uniform distribution of the fluid.

[0028] In this embodiment, four arched baffles 32 are provided, namely, from left to right, the first arched plate 321, the second arched plate 322, the third arched plate 323 and the fourth arched plate 324. The first arched plate 321 and the third arched plate 323 are arranged toward the same side, and the second arched plate 322 and the fourth arched plate 324 are arranged toward the other side, alternating in different directions, so that the fluid forms a more complex flow pattern in the shell 1, further enhancing the heat transfer effect.

[0029] The side of the arched baffle 32 is uniquely designed, including an arcuate portion 301, a straight portion 302 and a vertical portion 303, which are interconnected, wherein the straight portion 302 and the vertical portion 303 are vertically arranged. This structure enhances the strength and stability of the baffle.

[0030] The circumferential angle corresponding to the arc portion 301 is greater than ninety degrees and less than one hundred and eighty degrees, so that the fluid can generate appropriate vortices and turbulence when flowing through the baffle, thereby improving the heat transfer effect.

[0031] Example 2

[0032] The difference from Example 1 is that each arcuate baffle 32 is symmetrically arranged on the left and right sides. This symmetrical design makes the flow of the fluid in the shell 1 more uniform and stable, and the uniformity and consistency of the heat transfer effect are significantly improved. At the same time, the symmetrical layout also simplifies the manufacturing and installation process of the equipment and improves production efficiency.

Claims

1. A novel fixed tube sheet kettle reboiler, comprising a shell (1), wherein the left and right ends of the shell (1) are respectively connected to a left tube box (21) and a right tube box (22), and a tube bundle assembly (3) is installed in the shell (1), characterized in that: The tube bundle assembly (3) comprises a heat exchange tube (33) and a support plate assembly for supporting the heat exchange tube (33); the support plate assembly comprises a circular support plate (31) and an arcuate baffle (32); the heat exchange tube (33) passes through and is mounted on the circular support plate (31) and the arcuate baffle (32); the circular support plate (31) is arranged on both sides of the arcuate baffle (32); the upper part of the arcuate baffle (32) is flattened, and at least one arcuate baffle (32) has an arcuate opening arranged forward, and at least one arcuate baffle (32) has an arcuate opening arranged backward.

2. The novel fixed tube sheet kettle reboiler according to claim 1 is characterized in that: The circular support plate (31) comprises a left end support plate and a right end support plate, and each of the left end support plate and the right end support plate is provided with one.

3. The novel fixed tube sheet kettle reboiler according to claim 1 is characterized in that: The arcuate baffles (32) are symmetrically arranged on the left and right sides.

4. The novel fixed tube sheet kettle reboiler according to claim 1 is characterized in that: The arc-shaped openings of adjacent arcuate baffles (32) are arranged opposite to each other.

5. The novel fixed tube plate kettle reboiler according to claim 3 or 4, characterized in that: The arcuate baffles (32) are arranged in parallel at intervals, and the centers of circles corresponding to the arc edges of the arcuate baffles (32) are located on the same axis.

6. The novel fixed tube sheet kettle reboiler according to claim 3 or 4, characterized in that: An even number of the arcuate baffles (32) are provided, with the odd-numbered arcuate baffles (32) from left to right being arranged towards the same side, and the even-numbered arcuate baffles (32) being arranged towards the other side.

7. The novel fixed tube sheet kettle reboiler according to claim 6 is characterized in that: The side edge of the arcuate baffle (32) comprises an arc-shaped portion (301), a straight portion (302) connected to the upper side of the arc-shaped portion (301), and a vertical portion (303) connected between the arc-shaped portion (301) and the straight portion (302), wherein the straight portion (302) and the vertical portion (303) are arranged perpendicular to each other.

8. The novel fixed tube sheet kettle reboiler according to claim 7, characterized in that: The circumferential angle corresponding to the arc-shaped portion (301) is greater than ninety degrees and less than one hundred and eighty degrees.

Images