Novel efficient shell-and-tube heat exchanger

Abstract

The utility model belongs to the technical field of shell-and-tube heat exchangers, and particularly relates to a novel efficient shell-and-tube heat exchanger which comprises a shell, and a tube box is movably contacted on the shell. The movable ring is moved, the movable ring drives the clamping rod to slide on the fixed rod through the flexible steel rope and compresses the first spring, so that the clamping rod is separated from the clamping groove, the pipe box is moved to drive the limiting rod to be separated from the limiting groove, the pipe box is taken down, and when the pipe box is installed, the movable ring is moved, the L-shaped plate on the pipe box is inserted into the corresponding groove, and then the pipe box is installed. When the ends of the limiting rods make contact with the inner walls of the corresponding limiting grooves, force on the movable rings is released, the first springs in the compressed state reset, the first springs drive the clamping rods to be clamped with the clamping grooves under the action of the elasticity of the first springs, and therefore the tube box is fixed, operation is easy and convenient to conduct during disassembly and assembly, and the disassembly and assembly efficiency is improved. The maintenance efficiency of the heat exchanger is improved, the maintenance cost is reduced, and the overall performance and operation safety of the heat exchanger can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shell and tube heat exchangers, in particular to a novel high-efficiency shell and tube heat exchanger. Background Art

[0002] Shell and tube heat exchanger is also called shell and tube heat exchanger. It is a wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. This heat exchanger has a simple structure, low cost, wide flow cross section, and is easy to clean scale; but the heat transfer coefficient is low and the floor space is large. It can be made of various structural materials (mainly metal materials), can be used under high temperature and high pressure, and is currently the most widely used type;

[0003] China's publicly authorized invention: CN219511339U discloses a new type of efficient shell and tube heat exchanger, including a shell and a tube box, wherein a heat exchange device is arranged inside the shell, and a sealing connection device is arranged outside the tube box, wherein the heat exchange device includes a heat exchange mechanism and a fixed baffle mechanism, wherein the heat exchange mechanism is arranged on both sides of the shell, and the fixed baffle mechanism is arranged inside the heat exchange mechanism. The new type of efficient shell and tube heat exchanger, through the arrangement of the baffle plate in the heat exchange device, on the one hand, provides a support point for the heat exchange tube, thereby preventing the heat exchange tube from bending and being damaged when working for a long time without support and fixation, and at the same time, it also forces the cold fluid to be baffled multiple times inside the shell, thereby enhancing the turbulence of the fluid and further improving the heat exchange efficiency. The high-temperature fluid is transported to the inside of the heat exchange tube through the circulation pipe in the sealing connection device, and is discharged from another circulation pipe after the heat exchange is completed, thereby realizing the heat exchange function;

[0004] However, there are still some problems with the device. In actual use, the tube box and the shell of the shell and tube heat exchanger are mostly fixed by bolt connection. However, after the heat exchanger has been running for a period of time, due to factors such as corrosive media, temperature changes and mechanical vibrations in the working environment, some bolts may become stripped, rusted or loose. At this time, if the heat exchanger needs to be disassembled for maintenance or parts need to be replaced, the stripped or rusted bolts will greatly increase the difficulty of disassembly and assembly, consuming more time and manpower. Since the tightening and disassembly of bolted connections usually require specific tools, and in some cases special means such as heating and lubrication are required to assist the operation, this undoubtedly puts higher requirements on the professional skills and tool preparation of maintenance personnel, and increases maintenance costs. Therefore, we propose a new type of high-efficiency shell and tube heat exchanger to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art, the utility model provides a novel high-efficiency shell and tube heat exchanger, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0009] A novel high-efficiency shell and tube heat exchanger comprises a shell, a tube box is movably contacted on the shell, a movable ring is slidably connected to the shell, two flexible steel ropes are fixedly connected to the left side of the movable ring, fixed pulleys are rotatably connected to both sides of the shell, two grooves are provided on the left side of the shell, a fixed rod is fixedly connected to the inner wall of one side of the groove, a clamping rod is slidably connected to the fixed rod, a first spring is welded between the end of the clamping rod and the inner wall of one side of the corresponding groove, the first spring is movably sleeved on the corresponding fixed rod, L-shaped plates are welded on both sides of the tube box, a clamping groove is provided on one side of the L-shaped plate, the clamping groove is clamped with the corresponding clamping rod, the end of the flexible steel rope extends into the corresponding groove and is fixedly connected to the end of the clamping rod.

[0010] Furthermore, rectangular grooves are provided on both sides of the shell, and positioning rods are welded between the inner walls on both sides of the rectangular grooves.

[0011] Furthermore, a limiting block is slidably connected to the positioning rod, and one side of the limiting block is fixedly connected to an inner wall of one side of the moving ring.

[0012] Furthermore, a second spring is welded between the other side of the limit block and an inner wall of one side of the corresponding rectangular groove, and the second spring is movably sleeved on the corresponding positioning rod.

[0013] Furthermore, a floating head tube sheet is provided in the shell, and a plurality of limiting grooves are provided in a ring shape on one side of the floating head tube sheet.

[0014] Furthermore, a limiting rod is movably contacted on the limiting groove, and an end of the limiting rod is fixedly connected to one side of the pipe box.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a new type of high-efficiency shell and tube heat exchanger, which has the following beneficial effects:

[0017] The utility model moves the moving ring, and the moving ring drives the corresponding clamping rod to move through the flexible steel rope. The clamping rod slides on the corresponding fixed rod and compresses the first spring, so that the clamping rod is separated from the corresponding clamping groove. Then the pipe box is moved, and the pipe box drives the limiting rod to separate from the corresponding limiting groove, so that the pipe box is removed. During installation, the moving ring is moved, and the L-shaped plate on the pipe box is inserted into the corresponding groove. When the end of the limiting rod contacts the inner wall of the corresponding limiting groove, the force on the moving ring is relaxed, and the first spring in the compressed state is reset. Under the action of the first spring's own elastic force, the first spring drives the clamping rod to be clamped with the clamping groove, so that the pipe box is fixed. During disassembly and assembly, the operation is simple and convenient, which not only helps to improve the maintenance efficiency of the heat exchanger and reduce maintenance costs, but also improves the overall performance and operation safety of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the pipe box and the limit rod connection of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the housing of the utility model;

[0021] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of the middle A area;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the limit block, the movable ring and the second spring connected in the utility model.

[0023] In the figure: 1. shell; 2. pipe box; 3. movable ring; 4. flexible steel rope; 5. fixed pulley; 6. groove; 7. fixing rod; 8. clamping rod; 9. first spring; 10. L-shaped plate; 11. clamping groove; 12. rectangular groove; 13. positioning rod; 14. second spring; 15. floating head tube plate; 16. limiting groove; 17. limiting rod; 18. limiting block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] like Figure 1-5As shown, a novel high-efficiency shell and tube heat exchanger proposed in one embodiment of the utility model comprises a shell 1, a tube box 2 is movably contacted on the shell 1, a moving ring 3 is slidably connected to the shell 1, two flexible steel ropes 4 are fixedly connected to the left side of the moving ring 3, fixed pulleys 5 are rotatably connected to both sides of the shell 1, two grooves 6 are provided on the left side of the shell 1, a fixing rod 7 is fixedly connected to the inner wall of one side of the groove 6, a clamping rod 8 is slidably connected to the fixing rod 7, a first spring 9 is welded between the end of the clamping rod 8 and the inner wall of one side of the corresponding groove 6, the first spring 9 is movably sleeved on the corresponding fixing rod 7, L-shaped plates 10 are welded on both sides of the tube box 2, a clamping groove 11 is provided on one side of the L-shaped plate 10, the clamping groove 11 is clamped with the corresponding clamping rod 8, the end of the flexible steel rope 4 extends into the corresponding groove 6 and is fixedly connected to the end of the clamping rod 8, the moving ring 3 is moved, and the moving ring 3 drives the limit block 18 to slide on the corresponding positioning rod 13 The second spring 14 is compressed, and the moving ring 3 drives the corresponding clamping rod 8 to move through the flexible steel rope 4. The clamping rod 8 slides on the corresponding fixing rod 7 and compresses the first spring 9, so that the clamping rod 8 is separated from the corresponding clamping groove 11, and then the pipe box 2 is moved, and the pipe box 2 drives the limiting rod 17 to separate from the corresponding limiting groove 16, so that the pipe box 2 is removed. During installation, the moving ring 3 is moved, and the L-shaped plate 10 on the pipe box 2 is inserted into the corresponding groove 6. When the end of the limiting rod 17 contacts the inner wall of the corresponding limiting groove 16, the force on the moving ring 3 is relaxed, and the first spring 9 in the compressed state is reset. Under the action of the first spring 9's own elastic force, the first spring 9 drives the clamping rod 8 to be clamped with the clamping groove 11, thereby fixing the pipe box 2. During disassembly and assembly, the operation is simple and convenient, which not only helps to improve the maintenance efficiency of the heat exchanger and reduce the maintenance cost, but also improves the overall performance and operation safety of the heat exchanger.

[0027] In some embodiments, rectangular grooves 12 are provided on both sides of the housing 1, and positioning rods 13 are welded between the inner walls of the two sides of the rectangular grooves 12. The positioning rods 13 play a positioning role.

[0028] In some embodiments, a limiting block 18 is slidably connected to the positioning rod 13, and one side of the limiting block 18 is fixedly connected to an inner wall of one side of the moving ring 3. The setting of the limiting block 18 plays a connecting role.

[0029] In some embodiments, a second spring 14 is welded between the other side of the limit block 18 and the inner wall of one side of the corresponding rectangular groove 12. The second spring 14 is movably mounted on the corresponding positioning rod 13. The setting of the second spring 14 plays a resetting role.

[0030] In some embodiments, a floating head tube sheet 15 is provided in the shell 1, and a plurality of limiting grooves 16 are provided in a ring shape on one side of the floating head tube sheet 15. A limiting rod 17 is movably contacted on the limiting groove 16, and an end of the limiting rod 17 is fixedly connected to one side of the tube box 2. The setting of the limiting rod 17 plays a limiting role.

[0031] Working principle or structural principle, when in use, move the moving ring 3, the moving ring 3 drives the limit block 18 to slide on the corresponding positioning rod 13 and compress the second spring 14, the moving ring 3 drives the corresponding clamping rod 8 to move through the flexible steel rope 4, the clamping rod 8 slides on the corresponding fixed rod 7 and compresses the first spring 9, so that the clamping rod 8 is separated from the corresponding clamping groove 11, and then move the pipe box 2, the pipe box 2 drives the limit rod 17 to separate from the corresponding limit groove 16, so that the pipe box 2 is removed, when installing, move the moving ring 3, the moving ring 3 drives the limit block 18 to slide on the corresponding positioning rod 13 and compress the second spring 14, the moving ring 3 is The corresponding clamping rod 8 is driven to move by the flexible steel rope 4, and the clamping rod 8 slides on the corresponding fixing rod 7 and compresses the first spring 9, and the L-shaped plate 10 on the pipe box 2 is inserted into the corresponding groove 6. When the end of the limiting rod 17 contacts the inner wall of the corresponding limiting groove 16, the force on the moving ring 3 is released, and the first spring 9 in the compressed state is reset. Under the action of the elastic force of the first spring 9 itself, the first spring 9 drives the clamping rod 8 to be clamped with the clamping groove 11, so as to fix the pipe box 2. When disassembling and assembling, the operation is simple and convenient, which not only helps to improve the maintenance efficiency of the heat exchanger and reduce the maintenance cost, but also improves the overall performance and operation safety of the heat exchanger.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel high-efficiency shell and tube heat exchanger, comprising a shell (1), characterized in that: The shell (1) is movably in contact with a pipe box (2), and a moving ring (3) is slidably connected to the shell (1). Two flexible steel ropes (4) are fixedly connected to the left side of the moving ring (3). Fixed pulleys (5) are rotatably connected to both sides of the shell (1). Two grooves (6) are provided on the left side of the shell (1). A fixing rod (7) is fixedly connected to the inner wall of one side of the groove (6). A clamping rod (8) is slidably connected to the fixing rod (7). A first spring (9) is welded between the end of the clamping rod (8) and the inner wall of one side of the corresponding groove (6). The first spring (9) is movably sleeved on the corresponding fixing rod (7). L-shaped plates (10) are welded to both sides of the pipe box (2). A clamping groove (11) is provided on one side of the L-shaped plate (10). The clamping groove (11) is clamped with the corresponding clamping rod (8). The end of the flexible steel rope (4) extends into the corresponding groove (6) and is fixedly connected to the end of the clamping rod (8).

2. A novel high-efficiency shell and tube heat exchanger according to claim 1, characterized in that: Rectangular grooves (12) are provided on both sides of the shell (1), and positioning rods (13) are welded between the inner walls on both sides of the rectangular groove (12).

3. A novel high-efficiency shell and tube heat exchanger according to claim 2, characterized in that: A limiting block (18) is slidably connected to the positioning rod (13), and one side of the limiting block (18) is fixedly connected to an inner wall of one side of the moving ring (3).

4. A novel high-efficiency shell and tube heat exchanger according to claim 3, characterized in that: A second spring (14) is welded between the other side of the limit block (18) and the inner wall of one side of the corresponding rectangular groove (12), and the second spring (14) is movably sleeved on the corresponding positioning rod (13).

5. A novel high-efficiency shell and tube heat exchanger according to claim 1, characterized in that: A floating head tube sheet (15) is arranged in the shell (1), and a plurality of limiting grooves (16) are provided in an annular shape on one side of the floating head tube sheet (15).

6. A novel high-efficiency shell and tube heat exchanger according to claim 5, characterized in that: A limiting rod (17) is movably contacted on the limiting groove (16), and an end of the limiting rod (17) is fixedly connected to one side of the pipe box (2).

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