Automatic online cleaning mechanism for shell-and-tube heater

Abstract

The utility model discloses an automatic online cleaning mechanism for a shell-and-tube heater, which comprises a shell-and-tube heat exchanger and has the beneficial effects that an X-axis linear module and a Z-axis linear module are arranged, so that a movable sliding table of the X-axis linear module drives a second connecting plate, a connecting joint, a first connecting plate and a nozzle mechanism to move and adjust; a movable sliding table of a Z-axis linear module is combined to drive a first connecting plate to move, the first connecting plate drives a second connecting plate and a nozzle mechanism to move and adjust through a connecting joint, the shell-and-tube heat exchanger is conveniently washed, water pressure acts on the end face of a first nozzle piston, linear motion is achieved by extruding a first spring, and the linear motion is achieved. The first nozzle cylinder body plays a guiding role, the first nozzle cylinder body, the first nozzle piston and the O-shaped ring achieve a sealing function, the supporting block moves to the position of the tube box sealing plate of the shell-and-tube heat exchanger along with movement of the first nozzle piston, the nozzle mechanism is supported by means of the strength of the heater tube box sealing plate, and the stability of the nozzle mechanism is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning mechanisms, specifically an automated online cleaning mechanism for shell-and-tube heaters. Background Technology

[0002] Shell-and-tube heaters, commonly known as shell-and-tube heat exchangers or tubular heat exchangers, are a type of indirect heat exchanger. Their core structure consists of a bundle of tubes enclosed within a shell. This type of equipment achieves heat exchange between two fluids at different temperatures through the tube bundle walls, and these two fluids do not come into contact with each other during the heat exchange process. Shell-and-tube heat exchangers clearly distinguish between the shell side and the tube side. Generally, clean materials flow through the shell side, while unclean materials that are prone to scaling are placed in the tube side. After a period of operation, severe scaling occurs inside the tube side, affecting heat exchange efficiency. At this point, it is necessary to disassemble the tube box for cleaning the heat exchange tube bundle. This cleaning process is time-consuming and economically inefficient. Utility Model Content

[0003] The purpose of this invention is to provide an automated online cleaning mechanism for shell-and-tube heaters, in order to solve the problem mentioned in the background art that severe scaling inside the tubes affects heat exchange efficiency. In this case, it is necessary to disassemble the tube box for cleaning the heat exchange tube bundle, which takes a long time and has poor economic benefits.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automated online cleaning mechanism for shell-and-tube heaters, comprising:

[0005] Shell and tube heat exchangers;

[0006] X-axis linear module, the X-axis linear module is installed inside the shell and tube heat exchanger;

[0007] Z-axis linear module, the Z-axis linear module is installed inside the shell and tube heat exchanger;

[0008] The second connecting plate is mounted on the moving slide of the X-axis linear module via a rotating shaft;

[0009] The first connecting plate is mounted on the movable slide of the Z-axis linear module via a rotating shaft, and the first connecting plate and the second connecting plate are rotatably connected by a connecting joint.

[0010] The nozzle mechanism is installed inside the second connecting plate. The nozzle mechanism includes a first nozzle cylinder, a cylinder connecting nut, and a second nozzle cylinder. The first nozzle cylinder is installed inside the second connecting plate. A first nozzle piston is installed inside the first nozzle cylinder. A cylinder connecting nut is installed at the bottom end of the first nozzle cylinder. The second nozzle cylinder is installed inside the cylinder connecting nut.

[0011] Internal threaded connector, the internal threaded connector is located on the side of the cylinder body connecting nut;

[0012] No. 2 nozzle piston, the No. 2 nozzle piston is located inside the No. 2 nozzle cylinder;

[0013] The nozzle is installed at the bottom end of the second nozzle piston, and a sealing block is fixed to the outside of the nozzle and the second nozzle piston.

[0014] As a preferred embodiment of this utility model: a first spring is sleeved on the outer side of the first nozzle piston, a support block is installed on the top of the first nozzle piston, and the support block and the first nozzle piston are connected by an internal hex bolt.

[0015] As a preferred embodiment of this utility model: a second spring is sleeved on the outer side of the second nozzle piston, a first limiting block is fixedly connected to the inner side of the first nozzle cylinder, and a second limiting block is fixedly connected to the inner side of the second nozzle cylinder.

[0016] As a preferred embodiment of this utility model: a mounting block is fixedly connected to the outer side of the first nozzle cylinder, and the mounting block is connected to the second connecting plate by bolts.

[0017] As a preferred embodiment of this utility model: a bearing support is symmetrically installed on the outer side of the X-axis linear module. The bearing support is connected to the shell-and-tube heat exchanger. An output motor is installed on one side of one of the bearing supports. The output end of the output motor is connected to the X-axis linear module through a mechanical seal.

[0018] As a preferred embodiment of this utility model: a second bearing support is installed on the outer side of the Z-axis linear module, the second bearing support is connected to the shell-and-tube heat exchanger, a second output motor is installed on one side of the second bearing support, the output end of the second output motor is connected to the Z-axis linear module through a second mechanical seal, multiple O-rings are provided on the outer side of the first nozzle piston, a high-pressure cleaning fluid inlet pipe is fixedly connected inside the shell-and-tube heat exchanger, and the high-pressure cleaning fluid inlet pipe is connected to the internal threaded joint through a high-pressure water pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up an X-axis linear module and a Z-axis linear module, the X-axis linear module's moving slide table drives the second connecting plate, connecting joint, first connecting plate, and nozzle mechanism to move and adjust. Combined with the Z-axis linear module's moving slide table driving the first connecting plate to move, the first connecting plate drives the second connecting plate and nozzle mechanism to move and adjust via the connecting joint. This facilitates the flushing of the shell-and-tube heat exchanger. Water pressure acts on the piston end face of the first nozzle, squeezing the first spring to achieve linear motion. The first nozzle cylinder acts as a guide and provides a sealing function with the first nozzle piston and O-ring. The support block moves with the movement of the first nozzle piston to the shell-and-tube heat exchanger tube box sealing plate, using the strength of the heater tube box sealing plate to support the nozzle mechanism, greatly improving the stability of the nozzle mechanism itself. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 This is a right view of the No. 1 connecting plate and the No. 2 connecting plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the external structure of the nozzle cylinder of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the nozzle cylinder of this utility model.

[0025] In the diagram: 1. Shell and tube heat exchanger; 2. X-axis linear module; 3. Z-axis linear module; 4. Nozzle mechanism; 5. Mechanical seal No. 1; 6. Bearing support No. 1; 7. Output motor No. 1; 8. Connecting joint; 9. Output motor No. 2; 10. Connecting plate No. 1; 11. Connecting plate No. 2; 12. Mechanical seal No. 2; 13. Nozzle; 14. Sealing block; 15. High-pressure cleaning fluid inlet pipe; 16. Socket head bolt; 17. Support block; 18. No. 1 nozzle cylinder; 19. Mounting block; 20. Spring No. 1; 21. No. 1 nozzle piston; 22. O-ring; 23. Limiting block No. 1; 24. Cylinder connecting nut; 25. Limiting block No. 2; 26. Internal threaded connector; 27. No. 2 nozzle cylinder; 28. No. 2 nozzle piston; 29. ​​Spring No. 2; 30. Bearing support No. 2. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: an automated online cleaning mechanism for shell-and-tube heaters, comprising: a shell-and-tube heat exchanger 1; an X-axis linear module 2 installed inside the shell-and-tube heat exchanger 1; a Z-axis linear module 3 installed inside the shell-and-tube heat exchanger 1; a second connecting plate 11 mounted on a movable slide of the X-axis linear module 2 via a rotating shaft; a first connecting plate 10 mounted on a movable slide of the Z-axis linear module 3 via a rotating shaft, the first connecting plate 10 and the second connecting plate 11 being rotatably connected by a connecting joint 8; and a nozzle mechanism 4 installed inside the second connecting plate 11, the nozzle mechanism 4 including a first nozzle cylinder 18. The cylinder body is connected to the nut 24 and the second nozzle cylinder body 27. The first nozzle cylinder body 18 is installed inside the second connecting plate 11. The first nozzle cylinder body 18 is equipped with the first nozzle piston 21. The bottom end of the first nozzle cylinder body 18 is equipped with the cylinder body connecting nut 24. The second nozzle cylinder body 27 is installed inside the cylinder body connecting nut 24. The internal threaded joint 26 is welded to one side of the cylinder body connecting nut 24. The second nozzle piston 28 is located inside the second nozzle cylinder body 27. The nozzle 13 is installed at the bottom end of the second nozzle piston 28. The outer sides of the nozzle 13 and the second nozzle piston 28 are fixedly connected with the sealing block 14.

[0028] It should be noted that in this embodiment, the high-pressure cleaning fluid enters the high-pressure water pipe through the high-pressure cleaning fluid inlet pipe 15, and then enters the cavity of the nozzle mechanism 4 through the high-pressure water pipe. After the cleaning fluid fills the cavity, the water pressure gradually rises to 20MPa. The cleaning fluid enters the cylinder connecting nut 24 through the internal threaded joint 26. The water pressure acts on the end face of the first nozzle piston 21, and the first spring 20 is squeezed to achieve linear motion. The first nozzle cylinder 18 serves as a guide and achieves a sealing function with the first nozzle piston 21 and the O-ring 22. The support block 17 moves with the first nozzle piston 21 to the tube box sealing plate of the shell-and-tube heat exchanger 1. The PLC program controls the X-axis linear module 2 through the output end of the first output motor 7. The moving slide of the X-axis module 2 drives the second connecting plate 11 to move through the rotating shaft. When the second connecting plate 11 moves, it drives the first connecting plate 10 to move and adjust through the connecting joint 8, thereby adjusting the second... The nozzle mechanism 4 inside the connecting plate 11 is positioned to move the overall position of the first nozzle cylinder 18 and the second nozzle cylinder 27, facilitating cleaning of the shell-and-tube heat exchanger 1. The PLC program controls the output end of the second output motor 9 to drive the Z-axis linear module 3. The moving slide of the Z-axis module 3 drives the first connecting plate 10 through the rotating shaft. The first connecting plate 10 drives the second connecting plate 11 to move through the connecting joint 8. The second connecting plate 11 drives the first nozzle cylinder 18 and the second nozzle cylinder 27 to adjust their positions and move them above the corresponding heat exchange tubes of the shell-and-tube heat exchanger 1. The second nozzle piston 28 pushes the sealing block 14, and the nozzle 13 extends into the heat exchange tube to flush the inner wall of the tube for 15 minutes. After cleaning, the internal pressure of the nozzle mechanism 4 is released, and the nozzle 13 retracts. The PLC program controls the nozzle mechanism 4 to clean the next heat exchange tube bundle, and so on, until all heat exchange tube bundles are cleaned.

[0029] In one embodiment, such as Figure 5 As shown, a first spring 20 is sleeved on the outer side of the first nozzle piston 21, and a support block 17 is installed on the top of the first nozzle piston 21. The support block 17 and the first nozzle piston 21 are connected by an internal hex bolt 16.

[0030] It should be noted that in this embodiment, the moving position of the first nozzle piston (21) is reset by the first spring (20).

[0031] In one embodiment, such as Figure 5 As shown, a second spring 29 is sleeved on the outer side of the second nozzle piston 28, a first limiting block 23 is fixedly connected to the inner side of the first nozzle cylinder 18, and a second limiting block 25 is fixedly connected to the inner side of the second nozzle cylinder 27.

[0032] It should be noted that in this embodiment, the second spring (29) is used to reset the movement position of the second nozzle piston (28) within the second nozzle cylinder (27).

[0033] In one embodiment, such as Figures 2 to 5 As shown, a mounting block 19 is fixed to the outside of the first nozzle cylinder 18, and the mounting block 19 is connected to the second connecting plate 11 by bolts.

[0034] It should be noted that in this embodiment, the mounting block (19) and the second connecting plate (11) are installed with bolts, so that the positions of the first nozzle cylinder (18), the cylinder connecting nut (24) and the second nozzle cylinder (27) and the second connecting plate (11) can be installed and fixed.

[0035] In one embodiment, such as Figures 1 to 3 As shown, a bearing support 6 is symmetrically installed on the outer side of the X-axis linear module 2. The bearing support 6 is connected to the shell-and-tube heat exchanger 1. An output motor 7 is installed on one side of one of the bearing support 6. The output end of the output motor 7 is connected to the X-axis linear module 2 through a mechanical seal 5.

[0036] It should be noted that in this embodiment, a mechanical seal (5) is provided to ensure that no fluid leakage occurs during power transmission.

[0037] In one embodiment, such as Figures 1 to 5 As shown, a second bearing support 30 is installed on the outside of the Z-axis linear module 3. The second bearing support 30 is connected to the shell-and-tube heat exchanger 1. A second output motor 9 is installed on one side of the second bearing support 30. The output end of the second output motor 9 is connected to the Z-axis linear module 3 through a second mechanical seal 12. Multiple O-rings 22 are provided on the outside of the first nozzle piston 21. A high-pressure cleaning fluid inlet pipe 15 is fixed inside the shell-and-tube heat exchanger 1. The high-pressure cleaning fluid inlet pipe 15 is connected to the internal threaded joint 26 through a high-pressure water pipe.

[0038] It should be noted that in this embodiment, the external high-pressure cleaning fluid enters the high-pressure water pipe through the high-pressure cleaning fluid inlet pipe (15), and then enters the internal threaded joint (26) through the high-pressure water pipe to perform cleaning fluid injection treatment on the nozzle mechanism (4).

[0039] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] 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. An automated online cleaning mechanism for shell-and-tube heaters, characterized in that, include: Shell and tube heat exchanger (1); X-axis linear module (2), which is installed inside the shell and tube heat exchanger (1); Z-axis linear module (3) is installed inside the shell and tube heat exchanger (1); Second connecting plate (11) is mounted on the movable slide of X-axis linear module (2) via a rotating shaft; Connecting plate 1 (10) is mounted on the movable slide of the Z-axis linear module (3) via a rotating shaft. Connecting plate 1 (10) and connecting plate 2 (11) are rotatably connected by connecting joint (8). Nozzle mechanism (4) is installed inside the second connecting plate (11). The nozzle mechanism (4) includes a first nozzle cylinder (18), a cylinder connecting nut (24) and a second nozzle cylinder (27). The first nozzle cylinder (18) is installed inside the second connecting plate (11). A first nozzle piston (21) is provided inside the first nozzle cylinder (18). A cylinder connecting nut (24) is installed at the bottom of the first nozzle cylinder (18). The second nozzle cylinder (27) is installed on the inner side of the cylinder connecting nut (24). An internal threaded connector (26) is provided on one side of the cylinder body connecting nut (24); No. 2 nozzle piston (28) is located inside the No. 2 nozzle cylinder (27); The nozzle (13) is installed at the bottom end of the second nozzle piston (28), and a sealing block (14) is fixed to the outside of the nozzle (13) and the second nozzle piston (28).

2. The automated online cleaning mechanism for shell-and-tube heaters according to claim 1, characterized in that: A first spring (20) is sleeved on the outside of the first nozzle piston (21), and a support block (17) is installed on the top of the first nozzle piston (21). The support block (17) and the first nozzle piston (21) are connected by an internal hex bolt (16).

3. The automated online cleaning mechanism for shell-and-tube heaters according to claim 1, characterized in that: A second spring (29) is sleeved on the outer side of the second nozzle piston (28), a first limiting block (23) is fixedly connected to the inner side of the first nozzle cylinder (18), and a second limiting block (25) is fixedly connected to the inner side of the second nozzle cylinder (27).

4. The automated online cleaning mechanism for shell-and-tube heaters according to claim 1, characterized in that: An mounting block (19) is fixed to the outside of the first nozzle cylinder (18), and the mounting block (19) is connected to the second connecting plate (11) by bolts.

5. The automated online cleaning mechanism for shell-and-tube heaters according to claim 1, characterized in that: A bearing support (6) is symmetrically installed on the outer side of the X-axis linear module (2). The bearing support (6) is connected to the shell-and-tube heat exchanger (1). A first output motor (7) is installed on one side of one of the bearing support (6). The output end of the first output motor (7) is connected to the X-axis linear module (2) through a first mechanical seal (5).

6. The automated online cleaning mechanism for shell-and-tube heaters according to claim 1, characterized in that: A second bearing support (30) is installed on the outside of the Z-axis linear module (3). The second bearing support (30) is connected to the shell-and-tube heat exchanger (1). A second output motor (9) is installed on one side of the second bearing support (30). The output end of the second output motor (9) is connected to the Z-axis linear module (3) through a second mechanical seal (12). Multiple O-rings (22) are provided on the outside of the first nozzle piston (21). A high-pressure cleaning fluid inlet pipe (15) is fixed inside the shell-and-tube heat exchanger (1). The high-pressure cleaning fluid inlet pipe (15) is connected to the internal threaded joint (26) through a high-pressure water pipe.

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