U-shaped heat exchange tube type multi-tube-pass anti-corrosion heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a U-shaped heat exchange tube type multi-tube-pass anti-corrosion heat exchanger which comprises a shell, one end of the shell is fixedly connected with a first fixing ring, a tube box is installed on one side of the shell, one end of the tube box is fixedly connected with a second fixing ring, a tube plate is installed on one side of the first fixing ring, and the tube plate is installed on one side of the second fixing ring. And a plurality of bolts are mounted in the first fixing ring. According to the utility model, the nuts are separated from the bolts by rotating the nuts, the tube box is detached from the shell, the whole U-shaped tube bundle is detached by pulling the tube plate, the fixing rings are separated from the mounting holes by pulling the single tube pass, and the U-shaped tube bundle is in interference fit with the rubber rings through the U-shaped tube bundle and the fixing rings. The single tube pass can be quickly disassembled and assembled, replacement and maintenance are facilitated, the maintenance cost is effectively reduced, the cleaning effect is better, dirt and corrosives are effectively prevented from being accumulated, and the service life of the tube pass can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a U-shaped heat exchange tube type multi-tube pass anti-corrosion heat exchanger. Background Art

[0002] A heat exchanger is a device used to transfer heat between fluids. It is commonly found in various industrial processes and systems. Its function is to transfer heat energy from one fluid (usually a heat source medium) to another fluid (usually a cooling medium) to achieve purposes such as heating, cooling or temperature regulation. A U-shaped heat exchanger is a common heat exchange equipment. Its characteristic is that the heat exchange tube is U-shaped. It is usually used for heat transfer between liquids or gases. The heat source medium and the cooling medium in the heat exchanger flow through the tubes respectively. Heat is transferred from the heat source medium to the cooling medium to achieve heat exchange. Heat exchangers play an important role in industrial production and life, but the existing heat exchanger tube bundles and tube sheets are usually fixedly connected and do not have the function of single-tube disassembly, resulting in high maintenance costs. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger, which aims to improve the problem that the existing heat exchanger tube bundle and tube sheet are usually fixedly connected and do not have a single-tube disassembly function, resulting in high maintenance costs.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger, comprising a shell, one end of the shell is fixedly connected to a first fixing ring, one side of the shell is installed with a tube box, one end of the tube box is fixedly connected to a second fixing ring, one side of the first fixing ring is installed with a tube sheet, one side of the tube sheet is installed on one side of the second fixing ring, a plurality of bolts are installed inside the first fixing ring, one end of the bolt passes through the inside of the second fixing ring, both ends of the bolt are threadedly connected to nuts, a U-shaped tube bundle is installed inside the shell, a plurality of mounting holes are opened inside the tube sheet, rubber rings are installed on the inner walls of the mounting holes, both ends of the U-shaped tube bundle are installed inside the mounting holes, the outer wall of the U-shaped tube bundle is in contact with the rubber ring, both ends of the U-shaped tube bundle are fixedly connected with fixing rings, the fixing rings are installed inside the mounting holes, and a sealing mechanism is installed on the outer wall of the tube sheet.

[0005] Preferably, the sealing mechanism includes a tube-box side gasket, one side of which is installed on one side of the first fixing ring, and the other side of which is installed on the other side of the tube sheet, a tube-box gasket is installed on one side of the tube sheet, and one side of which is installed on one side of the second fixing ring.

[0006] Preferably, a partition is fixedly connected to the interior of the pipe box, and the middle portion of the second fixing ring is in contact with one side of the partition.

[0007] Preferably, a plurality of baffles are installed inside the shell, and the inside of the baffles is installed on the outer walls of a plurality of U-shaped tube bundles.

[0008] Preferably, a protective shell is installed inside the shell.

[0009] Preferably, mounting seats are fixedly connected to both sides of the lower surface of the outer wall of the shell.

[0010] Preferably, a shell-side outlet is installed above the shell, and a shell-side inlet is installed below the shell.

[0011] Preferably, a pipe-side inlet is installed above the pipe box, and a pipe-side outlet is installed below the pipe box.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the nut is disengaged from the bolt by rotating the nut, the tube box is disassembled from the shell, the tube sheet is pulled to disassemble the entire U-shaped tube bundle, and the fixing ring is disengaged from the mounting hole by pulling the single tube pass. The single tube pass can be quickly disassembled and installed through the interference fit between the U-shaped tube bundle, the fixing ring and the rubber ring, which is convenient for replacement and maintenance, effectively reduces maintenance costs, has a better cleaning effect, effectively prevents the accumulation of dirt and corrosion, and can extend its service life.

[0014] 2. In the utility model, the low-temperature fluid enters the tube box from the tube side inlet and then enters the upper tube side of the U-shaped tube bundle, bends to the lower tube side through the U-shaped tube bundle and flows into the lower tube box, and is discharged from the tube side outlet. The hot material enters the shell from the shell side inlet, and is discharged from the shell side outlet after multiple bends through the baffle. The hot material and the low-temperature liquid transfer heat through multiple U-shaped tube bundles. The design of multiple U-shaped tube bundles can increase the heat exchange efficiency and reduce the fluid pressure loss. The setting of multiple baffles effectively increases the opportunity and efficiency of heat transfer, thereby achieving the purpose of efficient heat exchange.

[0015] 3. In the utility model, the shell is made of stainless steel and has excellent anti-corrosion performance. The outer wall of the shell is coated with anti-corrosion paint to effectively prevent oxidation. The inside of the protective shell is filled with polyisobutylene rubber, which effectively improves the corrosion resistance of the heat exchanger and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a U-shaped heat exchange tube type multi-tube pass anti-corrosion heat exchanger proposed by the utility model;

[0017] Figure 2A schematic diagram of a U-shaped tube bundle of a U-shaped heat exchange tube type multi-tube pass anti-corrosion heat exchanger proposed by the utility model;

[0018] Figure 3 This is a cross-sectional view of a fixed ring of a U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger proposed by the utility model;

[0019] Figure 4 The utility model provides a cross-sectional view of a protective shell of a U-shaped heat exchange tube type multi-tube-pass anti-corrosion heat exchanger.

[0020] Legend:

[0021] 1. Shell; 2. First fixing ring; 3. Tube box; 4. Second fixing ring; 5. Tube sheet; 6. Bolts; 7. Nuts; 8. U-shaped tube bundle; 9. Mounting hole; 10. Rubber ring; 11. Fixing ring; 12. Protective shell; 13. Mounting seat; 14. Tube side inlet; 15. Tube side outlet; 16. Shell side outlet; 17. Shell side inlet; 18. Tube box gasket; 19. Tube box side gasket; 20. Partition; 21. Baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the specification 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 of 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.

[0023] Reference Figure 1-Figure 3 The utility model provides an embodiment: a U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger, comprising a shell 1, one end of the shell 1 is fixedly connected with a first fixing ring 2, a side of the shell 1 is installed with a tube box 3, one end of the tube box 3 is fixedly connected with a second fixing ring 4, a tube sheet 5 is installed on one side of the first fixing ring 2, one side of the tube sheet 5 is installed on one side of the second fixing ring 4, a plurality of bolts 6 are installed inside the first fixing ring 2, one end of the bolt 6 passes through the inside of the second fixing ring 4, both ends of the bolt 6 are threadedly connected with nuts 7, a U-shaped tube bundle 8 is installed inside the shell 1, a plurality of mounting holes 9 are opened inside the tube sheet 5, a rubber ring 10 is installed on the inner wall of the mounting hole 9, both ends of the U-shaped tube bundle 8 are installed inside the mounting hole 9, the outer wall of the U-shaped tube bundle 8 is in contact with the rubber ring 10, both ends of the U-shaped tube bundle 8 are fixedly connected with fixing rings 11, the fixing ring 11 is installed inside the mounting hole 9, and a sealing mechanism is installed on the outer wall of the tube sheet 5.

[0024] Specifically, the nut 7 is disengaged from the bolt 6 by rotating, so that the pipe box 3 and the shell 1 can be disassembled. By pulling the tube sheet 5, the entire U-shaped tube bundle 8 can be disassembled. The fixing ring 11 is installed inside the rubber ring 10. The place where the rubber ring 10 and the fixing ring 11 contact each other has a groove corresponding to the fixing ring 11, which is convenient for the stability of the installation of the fixing ring 11. The U-shaped tube bundle 8 and the fixing ring 11 are interference fit with the rubber ring 10. By pulling the single tube pass to make the fixing ring 11 disengaged from the mounting hole 9, the single tube pass can be quickly disassembled and installed.

[0025] Reference Figure 2 The sealing mechanism includes a tube box side gasket 19, one side of which is installed on one side of the first fixed ring 2, and the other side of the tube box side gasket 19 is installed on the other side of the tube sheet 5. A tube box gasket 18 is installed on one side of the tube sheet 5, and one side of the tube box gasket 18 is installed on one side of the second fixed ring 4. A partition 20 is fixedly connected to the inside of the tube box 3, and the middle part of the second fixed ring 4 is in contact with one side of the partition 20. A plurality of baffles 21 are installed inside the shell 1, and the inside of the baffles 21 is installed on the outer walls of a plurality of U-shaped tube bundles 8.

[0026] Specifically, the sealing performance of the device is effectively improved by the arrangement of the tube box gasket 18 and the tube box side gasket 19. The aperture of the connection between the baffle plate 21 and the U-shaped tube bundle 8 is larger than the fixing ring 11, which will not affect the disassembly of the U-shaped tube bundle 8. The arrangement of multiple baffle plates 21 effectively increases the opportunity and efficiency of heat transfer.

[0027] Reference Figure 4 A protective shell 12 is installed inside the shell 1.

[0028] Specifically, the shell 1 is made of stainless steel, the outer wall of the shell 1 is coated with anti-corrosion paint, and the inside of the protective shell 12 is filled with polyisobutylene rubber, which effectively improves the corrosion resistance of the heat exchanger.

[0029] Reference Figure 1 Mounting seats 13 are fixedly connected to both sides of the lower surface of the outer wall of the shell 1, a shell-side outlet 16 is installed above the shell 1, a shell-side inlet 17 is installed below the shell 1, a tube-side inlet 14 is installed above the tube box 3, and a tube-side outlet 15 is installed below the tube box 3.

[0030] Specifically, the arrangement of the mounting seat 13 effectively ensures the stability of the device.

[0031] Working principle: When using the heat exchanger, the low-temperature fluid enters the interior of the tube box 3 from the tube side inlet 14, is blocked by the partition 20, enters the upper tube side of the U-shaped tube bundle 8, is bent to the lower tube side through the U-shaped tube bundle 8, flows into the lower tube box 3, and is discharged from the tube side outlet 15. The hot material enters the interior of the shell 1 from the shell side inlet 17, is bent multiple times by the baffle 21, and is discharged from the shell side outlet 16. When the hot material flows on the outer wall of the U-shaped tube bundle 8, the hot material contacts the low-temperature fluid in the U-shaped tube bundle 8 through the outer wall of the U-shaped tube bundle 8. The heat of the hot material is transferred from the outer wall of the U-shaped tube bundle 8 to the inner wall of the U-shaped tube bundle 8, and then to the low-temperature fluid. At the same time, the temperature of the low-temperature fluid increases and the temperature of the hot material decreases, thereby achieving the purpose of heat exchange. The shell 1 is made of stainless steel. It has excellent anti-corrosion performance. The outer wall of the shell 1 is coated with anti-corrosion paint to effectively prevent oxidation. The protective shell 12 is filled with polyisobutylene rubber to effectively improve the corrosion resistance of the heat exchanger and extend its service life. When it needs to be disassembled, the nut 7 is disengaged from the bolt 6 by rotating it, so that the pipe box 3 can be disassembled from the shell 1. The tube sheet 5 can be pulled to separate the U-shaped tube bundle 8 and the baffle 21 from the shell 1, and the U-shaped tube bundle 8 can be disassembled as a whole. The fixing ring 11 is separated from the mounting hole 9 by pulling a single tube pass. The single tube pass can be quickly disassembled and installed through the interference fit between the U-shaped tube bundle 8 and the fixing ring 11 and the rubber ring 10, which is convenient for replacement and maintenance, low cost, better cleaning effect, effectively preventing the accumulation of dirt and corrosive substances, and extending its service life.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped heat exchange tube type multi-pass anti-corrosion heat exchanger, comprising a shell (1), characterized in that: One end of the shell (1) is fixedly connected to a first fixing ring (2), one side of the shell (1) is installed with a pipe box (3), one end of the pipe box (3) is fixedly connected to a second fixing ring (4), one side of the first fixing ring (2) is installed with a tube sheet (5), one side of the tube sheet (5) is installed on one side of the second fixing ring (4), a plurality of bolts (6) are installed inside the first fixing ring (2), one end of the bolt (6) passes through the inside of the second fixing ring (4), and both ends of the bolt (6) are threadedly connected to nuts (7). A U-shaped tube bundle (8) is installed inside the shell (1), a plurality of mounting holes (9) are opened inside the tube sheet (5), a rubber ring (10) is installed on the inner wall of the mounting hole (9), both ends of the U-shaped tube bundle (8) are installed inside the mounting hole (9), the outer wall of the U-shaped tube bundle (8) is in contact with the rubber ring (10), both ends of the U-shaped tube bundle (8) are fixedly connected with a fixing ring (11), the fixing ring (11) is installed inside the mounting hole (9), and a sealing mechanism is installed on the outer wall of the tube sheet (5).

2. The U-shaped heat exchange tube type multi-pass anti-corrosion heat exchanger according to claim 1, characterized in that: The sealing mechanism comprises a tube-box side gasket (19), one side of the tube-box side gasket (19) being mounted on one side of a first fixing ring (2), and the other side of the tube-box side gasket (19) being mounted on the other side of a tube sheet (5), a tube-box gasket (18) being mounted on one side of the tube sheet (5), and one side of the tube-box gasket (18) being mounted on one side of a second fixing ring (4).

3. The U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger according to claim 2, characterized in that: A partition plate (20) is fixedly connected to the interior of the pipe box (3), and a middle portion of the second fixing ring (4) is in contact with one side of the partition plate (20).

4. The U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger according to claim 3, characterized in that: A plurality of baffles (21) are installed inside the shell (1), and the inside of the baffles (21) is installed on the outer walls of a plurality of U-shaped tube bundles (8).

5. The U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger according to claim 4, characterized in that: A protective shell (12) is installed inside the housing (1).

6. The U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger according to claim 5, characterized in that: Mounting seats (13) are fixedly connected to both sides of the lower surface of the outer wall of the shell (1).

7. The U-shaped heat exchange tube type multi-tube anti-corrosion heat exchanger according to claim 6, characterized in that: A shell-side outlet (16) is installed above the shell (1), and a shell-side inlet (17) is installed below the shell (1).

8. The U-shaped heat exchange tube type multi-pass anti-corrosion heat exchanger according to claim 1, characterized in that: A pipe-side inlet (14) is installed above the pipe box (3), and a pipe-side outlet (15) is installed below the pipe box (3).

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