Pipe-in-pipe heat exchanger convenient to clean in later period

Abstract

The utility model discloses a tube-in-tube heat exchanger convenient for later cleaning, which comprises a tube body, two ends of the tube body are connected with head covers through locking mechanisms, a plurality of groups of beam tubes penetrate through the inner side of the tube body, tube plates are sleeved on the positions of the plurality of groups of beam tubes close to the two ends, one group of tube plates is connected with a bayonet socket in an inserting way, and the other group of tube plates is in threaded connection with a fixed seat. By means of the locking mechanism, the head cover can be conveniently disassembled and assembled so that the head cover can be conveniently opened to make contact with the interior of the tube body when cleaning is needed, the beam tube is fixed to the bayonet socket and the fixing base through the two sets of tube plates, one end of the beam tube is connected with the bayonet socket and the fixing base in an inserted mode, and the other end of the beam tube is connected with the fixing base in a threaded mode so that the beam tube can be independently pulled away to be cleaned or replaced. Through the structure, the head cover can be conveniently opened, the beam tube and other components can be conveniently pulled out for cleaning, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a tube-in-tube heat exchanger that is easy to clean later. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters of the process to meet the requirements of the process conditions. It is also one of the main devices for improving energy efficiency. Tube-in-tube heat exchangers are widely used in many fields.

[0003] Traditional non-removable heat exchangers rely on circulating chemical agents for cleaning, which is difficult to remove stubborn dirt and can corrode the tube walls, shortening their service life. Removable heat exchangers have complex structures, are time-consuming and labor-intensive to disassemble and assemble, and frequent disassembly can damage connecting parts, affecting sealing and stability. Therefore, it is necessary to design a tube-in-tube heat exchanger that is easy to clean later to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a tube-in-tube heat exchanger that is easy to clean later, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tube-in-tube heat exchanger that is easy to clean later, comprising a tube body, both ends of which are connected to a cap by a locking mechanism that is easy to disassemble and assemble. A plug-in seat is provided on the inner side of the tube body near one end, and a fixing seat is provided on the inner side of the tube body near the other end. Multiple sets of bundled tubes pass through the inner side of the tube body. Tube sheets are sleeved on the multiple sets of bundled tubes near both ends. One set of tube sheets is plugged into the plug-in seat, and another set of tube sheets is threaded to the fixing seat. Multiple sets of baffles are staggered between the two sets of tube sheets, and the multiple sets of baffles are all sleeved on the outer ring of the bundled tubes.

[0006] Preferably, the locking mechanism includes a locking seat, with a first connecting plate at each end of the tube body, and a second connecting plate at one end of each of the two sets of head covers. The outer rings of the two sets of first connecting plates each have four sets of first grooves, and the outer rings of the two sets of second connecting plates each have four sets of second grooves. A lead screw is rotatably connected to the inner side of the first groove, and one end of the lead screw passes through the inner side of the corresponding second groove and is threadedly connected to the locking seat. A handwheel for easy rotation is provided on one side of the locking seat, and the other side of the locking seat abuts against the second connecting plate.

[0007] Preferably, a sealing ring is provided between the first connecting plate and the second connecting plate.

[0008] Preferably, the tube body is equipped with a cold fluid inlet and a cold fluid outlet near both ends, and the outer rings of the two sets of head covers are respectively provided with a hot fluid inlet and a hot fluid outlet.

[0009] Preferably, two sets of handles are installed on one side of each of the two sets of tube sheets.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. In this invention, the hot fluid typically flows within the inner bundle of tubes, while the cold fluid flows in the space between the bundle of tubes and the tube body. Multiple sets of baffles guide the flow path of the cold fluid, causing it to flow in a tortuous manner, increasing the residence time of the cold fluid within the tube body, enhancing the heat exchange efficiency between the hot and cold fluids, and achieving high-efficiency heat exchange. The locking mechanism allows for easy disassembly and assembly of the head cover, facilitating access to the inside of the tube body when cleaning is required. The bundle of tubes is fixed to the insertion and fixing seats by two sets of tube plates, with one end inserted and the other end threaded, making it easy to remove and clean or replace them individually. Furthermore, through the above structure, the head cover can be easily opened and the bundle of tubes and other components can be removed for cleaning, greatly improving work efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 This is a bottom view of the present invention;

[0014] Figure 3 This is a side view and a top view of the present invention;

[0015] Figure 4 This is a side sectional view of the present invention;

[0016] Figure 5 for Figure 4 Enlarged view of part A in the image.

[0017] In the diagram: 1. Tube body, 2. Insertion socket, 3. Fixing seat, 4. Bundle tube, 5. Tube sheet, 6. Baffle plate, 7. Head cover, 8. Cold fluid inlet, 9. Cold fluid outlet, 10. Hot fluid inlet, 11. Hot fluid outlet, 12. First connecting plate, 13. Second connecting plate, 14. First groove, 15. Second groove, 16. Lead screw, 17. Locking seat, 18. Handwheel. Detailed Implementation

[0018] 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.

[0019] Example 1

[0020] Please refer to Figure 1-5 As shown, this utility model provides a tube-in-tube heat exchanger that is easy to clean later. It includes a tube body 1, and both ends of the tube body 1 are connected to a head cover 7 by a locking mechanism that is easy to disassemble and assemble. A plug-in seat 2 is provided on the inner side of the tube body 1 near one end, and a fixing seat 3 is provided on the inner side of the tube body 1 near the other end. Multiple bundles of tubes 4 pass through the inner side of the tube body 1. Tube sheets 5 are sleeved on the multiple bundles of tubes 4 near both ends. One set of tube sheets 5 is plugged into the plug-in seat 2, and the other set of tube sheets 5 is threaded to the fixing seat 3. Multiple sets of baffles 6 are staggered between the two sets of tube sheets 5, and the multiple sets of baffles 6 are all sleeved on the outer ring of the bundles of tubes 4.

[0021] Specifically, the hot fluid typically flows within the inner bundle of tubes 4, while the cold fluid flows in the space between the bundle of tubes 4 and the tube body 1. Multiple sets of baffles 6 guide the flow path of the cold fluid, causing it to flow in a tortuous manner, increasing the residence time of the cold fluid within the tube body 1, enhancing the heat exchange efficiency between the hot and cold fluids, and achieving efficient heat exchange. The locking mechanism allows for easy disassembly and assembly of the head cover 7, enabling it to be opened for cleaning and access to the interior of the tube body 1. The bundle of tubes 4 is fixed to the insertion seat 2 and the fixing seat 3 by two sets of tube plates 5, with one end inserted and the other end threaded, facilitating individual removal for cleaning or replacement. Furthermore, the aforementioned structure allows for easy opening of the head cover 7 and removal of components such as the bundle of tubes 4 for cleaning, greatly improving work efficiency.

[0022] The locking mechanism includes a locking seat 17. Both ends of the tube body 1 are provided with first connecting discs 12, and one end of each of the two sets of head covers 7 is provided with a second connecting disc 13. The outer rings of the two sets of first connecting discs 12 each have four sets of first grooves 14, and the outer rings of the two sets of second connecting discs 13 each have four sets of second grooves 15. A lead screw 16 is rotatably connected to the inner side of the first groove 14. One end of the lead screw 16 passes through the inner side of the corresponding second groove 15 and is threadedly connected to the locking seat 17. A handwheel 18 for easy rotation is provided on one side of the locking seat 17, and the other side of the locking seat 17 abuts against the second connecting disc 13. By rotating the handwheel 18, the locking seat 17 can be moved on the lead screw 16. Since the locking seat 17 abuts against the second connecting plate 13, an axial pulling force is generated as the locking seat 17 moves, tightly pulling the first connecting plate 12 and the second connecting plate 13 together, thus achieving a sealed connection between the tube body 1 and the head cover 7. When the handwheel 18 is rotated in the opposite direction, the locking seat 17 can be moved away from the second connecting plate 13 on the screw 16. As the locking seat 17 moves, the pulling force on the second connecting plate 13 gradually decreases until the pressure between the two connecting plates is released. At this time, the head cover 7 can be separated from the tube body 1, which facilitates operation inside the tube body 1. Furthermore, this design facilitates the cleaning and maintenance of the heat exchanger's interior, ensuring the stable operation of the equipment.

[0023] A sealing ring is provided between the first connecting plate 12 and the second connecting plate 13. When the two connecting plates are tightened by the screw 16 and the locking seat 17, the sealing ring will be squeezed and undergo elastic deformation, filling the tiny gap between the two connecting plates, preventing internal fluid leakage, and ensuring the sealing performance of the heat exchanger during operation.

[0024] The tube body 1 is equipped with a cold fluid inlet 8 and a cold fluid outlet 9 near both ends. The outer rings of the two sets of head covers 7 are respectively provided with a hot fluid inlet 10 and a hot fluid outlet 11. When the heat exchanger is working, the cold fluid enters the tube body 1 from the cold fluid inlet 8, and the hot fluid enters the head cover 7 from the hot fluid inlet 10 and flows into the bundle tube 4. This allows the two fluids to form a specific flow path in the heat exchanger so as to exchange heat.

[0025] Two sets of handles are installed on one side of each of the two sets of tube sheets 5. During the installation of the heat exchanger, when the tube sheet 5 assembly with bundled tubes 4 and baffles 6 needs to be installed into the tube body 1, the operator can hold the handle and use the grip points provided by the handle to adjust the position and angle of the tube sheet 5 more conveniently and stably.

[0026] Working principle: First, open the inlet and outlet valves of the hot fluid and cold fluid, allowing the hot fluid to flow into the bundle tube 4 and the cold fluid to flow into the space between the bundle tube 4 and the tube body 1. During the flow process, the hot and cold fluids exchange heat through the tube wall of the bundle tube 4. The baffle plate 6 guides the cold fluid to flow in a tortuous manner, enhancing the heat exchange effect. After the heat exchange is completed, rotate the handwheel 18 in the opposite direction, which will move the locking seat 17 away from the second connecting plate 13 on the screw 16. As the locking seat 17 moves, the tension on the second connecting plate 13 gradually decreases until the pressure between the two connecting plates is released. At this time, the head cover 7 can be separated from the tube body 1. Then, loosen the tube plate 5 that is threaded to the fixing seat 3, and then pull out the assembly consisting of the bundle tube 4, tube plate 5, and baffle plate 6 from the tube body 1. This allows for the cleaning of the pulled-out bundle tube 4, tube plate 5, baffle plate 6, and the inside of the tube body 1, thus completing the entire operation process.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tube-in-tube heat exchanger for easy post cleaning comprising a tube body (1) characterised in that: Both ends of the pipe body (1) are connected with head covers (7) through locking mechanisms convenient for disassembly and assembly, the inner side of the pipe body (1) is provided with a plug-in seat (2) near one end, the inner side of the pipe body (1) is provided with a fixing seat (3) near the other end, a plurality of groups of beam tubes (4) penetrate through the inner side of the pipe body (1), a plurality of groups of tube plates (5) are sleeved near the positions of the two ends of the plurality of groups of beam tubes (4), one group of the tube plates (5) is plugged with the plug-in seat (2), the other group of the tube plates (5) is threadedly connected with the fixing seat (3), a plurality of groups of baffle plates (6) are staggered between the two groups of tube plates (5), and the plurality of groups of baffle plates (6) are all sleeved on the outer rings of the beam tubes (4).

2. A tube-in-tube heat exchanger convenient for post cleaning as claimed in claim 1 wherein: The locking mechanism comprises a locking seat (17), both ends of the pipe body (1) are provided with first connecting discs (12), one end of each of the two groups of head covers (7) is provided with a second connecting disc (13), the outer rings of the two groups of first connecting discs (12) are all provided with four groups of first grooves (14), the outer rings of the two groups of second connecting discs (13) are all correspondingly provided with four groups of second grooves (15), the inner sides of the first grooves (14) are rotationally connected with lead screws (16), one end of each of the lead screws (16) penetrates the inner side of the corresponding second groove (15) and is threadedly connected with the locking seat (17), one side of the locking seat (17) is provided with a hand wheel (18) convenient for rotation, and the other side of the locking seat (17) abuts against the second connecting disc (13).

3. A tube-in-tube heat exchanger convenient for post cleaning as claimed in claim 2 wherein: The first connecting disc (12) and the second connecting disc (13) are provided with sealing rings.

4. A tube-in-tube heat exchanger convenient for post cleaning as claimed in claim 1 wherein: The pipe body (1) is respectively provided with a cold fluid inlet (8) and a cold fluid outlet (9) near the two ends, and the outer rings of the two groups of head covers (7) are respectively provided with a hot fluid inlet (10) and a hot fluid outlet (11).

5. A tube-in-tube heat exchanger convenient for post cleaning as claimed in claim 4 wherein: One side of each of the two groups of tube plates (5) is provided with two groups of handles.

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