Tube bundle supporting structure of shell-and-tube heat exchanger

Abstract

The utility model relates to the technical field of heat exchanger tube bundle supporting, and discloses a tube bundle supporting structure of a shell-and-tube heat exchanger, which comprises a tube plate main body, the outer surface of the tube plate main body is connected with a side ring, the front side of the tube plate main body is provided with a tube bundle hole group, and a positioning component is connected between the inner wall of the side ring and the front side of the tube plate main body. The positioning assembly comprises a positioning plate, a connecting arc plate, an outer tooth transmission wheel, an inner tooth transmission ring, a bolt, a supporting plate and an outer tooth guide wheel. According to the tube bundle supporting structure of the shell-and-tube heat exchanger, by means of the design that the four outer tooth transmission wheels are matched with the inner tooth transmission ring and by means of meshing friction between teeth, it is guaranteed that transmission connection between the inner tooth transmission ring and the four outer tooth transmission wheels is stable, and a transmission basis is provided for synchronous rotation of the four outer tooth transmission wheels in the follow-up process; and four bolts can be driven to move simultaneously only by rotating a single outer tooth transmission wheel, so that the disassembly and assembly combination operation of workers is further facilitated.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger tube bundle support technology, specifically a tube bundle support structure for a shell-and-tube heat exchanger. Background Technology

[0002] 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. Floating tube sheets are tube bundle support structures used in heat exchangers. They consist of multiple tube sheets, each with a certain number of tube holes for installing heat transfer tubes.

[0003] For example, a floating tube sheet structure for a heat exchanger, as described in Chinese Patent No. CN220625019U, involves sequentially rotating four threaded sleeves to fix four first side plates to four second side plates, thereby fixing the tube sheet body to the side rings. Similarly, the side rings can be disassembled. However, this sequential operation method is cumbersome, increasing the steps and time required for operators during actual use, reducing the efficiency of installing the tube bundle support structure, and making it inconvenient for users. Therefore, a tube bundle support structure for shell-and-tube heat exchangers is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a tube bundle support structure for shell-and-tube heat exchangers, which has the advantages of simultaneous disassembly and assembly, simple operation, and convenient use. It solves the problem in the prior art that it requires sequential operation of four parts for disassembly and assembly, which increases the number of operation steps, reduces the efficiency of disassembly and assembly, and is not conducive to user use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tube bundle support structure for a shell-and-tube heat exchanger, including a tube sheet body, a side ring connected to the outer surface of the tube sheet body, a tube bundle hole group opened on the front side of the tube sheet body, and a positioning component connected between the inner wall of the side ring and the front side of the tube sheet body;

[0008] The positioning assembly includes a positioning plate, a connecting arc plate, an external gear drive wheel, an internal gear drive ring, bolts, support plates, and external gear guide wheels. Four positioning plates are installed on the front side of the tube sheet body. Connecting arc plates are installed on the four inner walls of the side ring (top, bottom, left, and right). External gear drive wheels are connected to the front side of each of the four connecting arc plates. Internal gear drive rings are connected to the outer surfaces of the four external gear drive wheels. Bolts are connected to the front side of each of the four external gear drive wheels. Four support plates are installed on the inner wall of the side ring. External gear guide wheels are connected to the front side of each of the four support plates.

[0009] Furthermore, the four connecting arc plates are respectively located in front of the four positioning plates, and the front side of the positioning plates is provided with threaded grooves.

[0010] Furthermore, each of the four connecting arc plates has a first screw hole on its front side, and each of the four external gear transmission wheels has a second screw hole on its front side. The dimensions of the first screw hole, the second screw hole, and the screw groove are all adapted to the dimensions of the bolt.

[0011] Furthermore, each of the four connecting arc plates has an annular groove on its front side, and each of the four external gear transmission wheels has an annular slider installed on its rear side, with the annular slider slidably connected to the annular groove.

[0012] Furthermore, the outer surfaces of the four external toothed guide wheels respectively mesh with the inner wall of the internal toothed transmission ring, and the outer surfaces of the four external toothed transmission wheels respectively mesh with the inner wall of the internal toothed transmission ring.

[0013] Furthermore, the four external toothed guide wheels are rotatably connected to the four corresponding support plates via rotating shafts, and the four bolts are threadedly connected to the four second screw holes respectively.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The tube bundle support structure of this shell-and-tube heat exchanger utilizes a design with four external toothed drive wheels and an internal toothed drive ring. The meshing friction between the teeth ensures a stable transmission connection between the internal toothed drive ring and the four external toothed drive wheels, providing a transmission foundation for the synchronous rotation of the four external toothed drive wheels. This significantly reduces the user's operating steps; only a single external toothed drive wheel needs to be rotated to move all four bolts simultaneously, further facilitating disassembly and assembly operations and increasing ease of use.

[0017] 2. The tube bundle support structure of this shell-and-tube heat exchanger is equipped with a support plate and an external toothed guide wheel to open the internal toothed drive ring, preventing the internal toothed drive ring from obstructing the use of the tube bundle hole assembly. This ensures that the positioning component will not interfere with the use of the tube bundle support structure of the shell-and-tube heat exchanger, further increasing the stability and convenience during use. At the same time, a second screw hole and a first screw hole are made on the external toothed drive wheel and the connecting arc plate, which are used to push the bolts into the inner wall of the second screw hole or the first screw hole after rotation. This makes it convenient for users to collect and handle the bolts, and also prevents the bolts from falling directly and affecting the use, further facilitating the user's operation. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This utility model Figure 1 3D magnified view of point A in the middle;

[0020] Figure 3 This is a partial exploded view of the structure of this utility model;

[0021] Figure 4 This utility model Figure 1 Enlarged view of section B in the middle.

[0022] In the figure: 1. Tube sheet body; 2. Side ring; 3. Tube bundle hole group; 4. Positioning assembly; 401. Positioning plate; 402. Connecting arc plate; 403. External gear drive wheel; 404. Internal gear drive ring; 405. Bolt; 406. Support plate; 407. External gear guide wheel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 The tube bundle support structure of the shell-and-tube heat exchanger in this embodiment includes a tube sheet body 1, a side ring 2 connected to the outer surface of the tube sheet body 1, a tube bundle hole group 3 opened on the front side of the tube sheet body 1, and a positioning component 4 connected between the inner wall of the side ring 2 and the front side of the tube sheet body 1.

[0025] exist Figures 1-4In the middle, the positioning component 4 consists of eight components, including positioning plate 401, connecting arc plate 402, external gear transmission wheel 403, internal gear transmission ring 404, bolt 405, support plate 406 and external gear guide wheel 407, which achieve the advantages of synchronous disassembly and assembly, simple operation and convenient use.

[0026] exist Figure 1 and Figure 2 In the middle, four positioning plates 401 are installed on the front side of the tube sheet body 1, and connecting arc plates 402 are installed on the four inner walls of the side ring 2, up, down, left and right. The positioning plates 401 and the connecting arc plates 402 are positioned opposite each other, so that the bolts 405 can pass through the first screw hole on the connecting arc plate 402 and enter the threaded groove on the positioning plate 401.

[0027] exist Figure 1 and Figure 3 In the middle, the front side of each of the four connecting arc plates 402 is connected to an external gear drive wheel 403, the outer surface of each of the four external gear drive wheels 403 is connected to an internal gear drive ring 404, and the front side of each of the four external gear drive wheels 403 is connected to a bolt 405. The bolt 405 is used for threaded connection and reinforcement, and the internal gear drive ring 404 is used to drive the four external gear drive wheels 403 to rotate in the same direction.

[0028] exist Figure 1 and Figure 4 In the middle, four support plates 406 are installed on the inner wall of the side ring 2. The front side of each of the four support plates 406 is connected to an external toothed guide wheel 407, which opens the internal toothed transmission ring 404 to avoid interfering with the tube bundle components installed on the tube bundle hole group 3.

[0029] It should be noted that this section is intended to provide background or context for the embodiments set forth in the claims, and detailed descriptions of known functions and known components are omitted. Furthermore, both fixed and movable installations are determined according to the actual application. To ensure the compatibility of the equipment, the operating methods adopted are consistent with the parameters of commercially available instruments. The description herein does not imply that it is prior art simply because it is included in this section.

[0030] When implementing this procedure, please follow these steps:

[0031] 1) First, rotate the closest and most convenient external gear drive wheel 403, and use the internal gear drive ring 404 to make the other three external gear drive wheels 403 and four external gear guide wheels 407 rotate synchronously.

[0032] 2) Then, the external gear drive wheel 403 slides inside the annular groove on the connecting arc plate 402 via the annular slider, so that the external gear drive wheel 403 is threadedly connected and driven by the internal second screw hole drive bolt 405.

[0033] 3) Finally, the four bolts 405 are simultaneously moved forward under force, leaving the threaded groove on the front side of the positioning plate 401, thereby detaching the connection between the side ring 2 and the tube sheet body 1.

[0034] In summary, the tube bundle support structure of this shell-and-tube heat exchanger utilizes a design with four external gear drive wheels 403 and an internal gear drive ring 404. The meshing friction between the teeth ensures a stable transmission connection between the internal gear drive ring 404 and the four external gear drive wheels 403, providing a transmission basis for the synchronous rotation of the four external gear drive wheels 403. This significantly reduces the number of steps required for the user; only a single external gear drive wheel 403 needs to be rotated to move all four bolts 405 simultaneously, further facilitating disassembly and assembly operations and increasing ease of use.

[0035] Furthermore, the support plate 406 and the external toothed guide wheel 407 are designed to open the internal toothed drive ring 404, preventing the internal toothed drive ring 404 from obstructing the use of the tube bundle hole group 3. This ensures that the positioning component 4 will not interfere with the use of the tube bundle support structure of the shell-and-tube heat exchanger, further increasing the stability and convenience during use. At the same time, the external toothed drive wheel 403 and the connecting arc plate 402 have second and first threaded holes, which are used to push the bolt 405 into the inner wall of the second or first threaded hole after rotation. This makes it convenient for users to collect and handle the bolt 405, and also prevents the bolt 405 from falling directly and affecting the use. This further facilitates the use of the user and solves the problem in the comparison document that it is necessary to operate four parts sequentially for disassembly and assembly, which increases the operation steps, reduces the efficiency of disassembly and assembly, and is not conducive to the use of the user.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Tube bundle support structure of a shell-and-tube heat exchanger, comprising a tube sheet body (1), characterized in that: The outer surface of the tube plate body (1) is connected with a side ring (2), the front side of the tube plate body (1) is provided with a tube bundle hole group (3), and the inner wall of the side ring (2) and the front side of the tube plate body (1) are connected with a positioning assembly (4); The positioning assembly (4) comprises positioning plates (401), connecting arc plates (402), outer tooth transmission wheels (403), inner tooth transmission rings (404), bolts (405), support plates (406) and outer tooth guide wheels (407), four positioning plates (401) are installed on the front side of the tube plate body (1), connecting arc plates (402) are installed on the inner walls of the side ring (2) in four directions, outer tooth transmission wheels (403) are connected to the front sides of the four connecting arc plates (402), inner tooth transmission rings (404) are connected to the outer surfaces of the four outer tooth transmission wheels (403), bolts (405) are connected to the front sides of the four outer tooth transmission wheels (403), four support plates (406) are installed on the inner walls of the side ring (2), and outer tooth guide wheels (407) are connected to the front sides of the four support plates (406).

2. The tube bundle support structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The four connecting arc plates (402) are located in front of the four positioning plates (401) respectively, and the front side of the positioning plate (401) is provided with a threaded groove.

3. The tube bundle support structure of a shell-and-tube heat exchanger according to claim 2, characterized in that: The front sides of the four connecting arc plates (402) are provided with first screw holes, the front sides of the four outer tooth transmission wheels (403) are provided with second screw holes, and the sizes of the first screw holes, the second screw holes and the threaded grooves are matched with the size of the bolts (405).

4. The tube bundle support structure of a shell-and-tube heat exchanger according to claim 1, characterized by: The front sides of the four connecting arc plates (402) are provided with annular sliding grooves, and annular sliding blocks are installed on the rear sides of the four outer tooth transmission wheels (403) and are slidably connected with the annular sliding grooves.

5. The tube bundle support structure of a shell-and-tube heat exchanger according to claim 1, characterized by: The outer surfaces of the four outer tooth guide wheels (407) are respectively meshed with the inner walls of the inner tooth transmission rings (404), and the outer surfaces of the four outer tooth transmission wheels (403) are respectively meshed with the inner walls of the inner tooth transmission rings (404).

6. The tube bundle support structure of a shell-and-tube heat exchanger according to claim 3, characterized in that: The four outer tooth guide wheels (407) and the four corresponding support plates (406) are rotatably connected through rotating shafts, and the four bolts (405) are threadedly connected with the four second screw holes respectively.

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