A high-pressure resistant shell and tube energy-saving heat exchange unit

Abstract

The present invention belongs to the technical field of heat exchange equipment and relates to a high-pressure resistant shell and tube type energy-saving heat exchange unit, comprising a shell (1) and a tube sheet (2) matched with the shell (1), a plurality of heat exchange tubes (3) being installed on the tube sheet (2), the heat exchange tubes (3) being located inside the shell (1), a tube box (4) being provided outside the tube sheet (2), the tube box (4) being detachably fixedly connected to the tube sheet (2) and the shell (1), a baffle (5) being provided on the heat exchange tube (3), and a support drive device (6) being further provided, the support drive device (6) being used to drive the baffle (5) to press against the inner wall of the shell (1). The high-pressure resistant shell and tube type energy-saving heat exchange unit of the present invention has high heat exchange efficiency, good structural strength, and is easy to disassemble and maintain.

Description

Technical Field

[0001] The invention belongs to the technical field of energy-saving heat exchange equipment and relates to a high-pressure resistant shell and tube type energy-saving heat exchange unit. Background Art

[0002] The core structure of the shell and tube heat exchanger unit is the shell and tube heat exchanger. The shell and tube heat exchanger usually includes a shell and a heat exchange tube group installed in the shell and tube, and realizes heat exchange through the transportation of tube-side fluid and shell-side fluid.

[0003] At present, in order to improve the heat exchange efficiency, baffles are also set inside the shell to make the shell fluid move along the prescribed path, realize shell turbulence, and improve the heat exchange efficiency. In the existing technology, the installation of baffles can be roughly divided into two forms. One is that there is a gap between the baffle and the inner wall of the shell. This method has the defect that the shell-side fluid will partially move through the gap between the baffle and the inner wall of the shell, and will not move according to the predetermined path between the baffles, thereby reducing the heat exchange efficiency and causing energy waste. Another method is to fix the baffle to the inner wall of the shell, which can avoid the above problems, but this method is not convenient for disassembly and maintenance of the heat exchange tube, and is prone to shell-side dead flow problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a high-pressure resistant shell and tube type energy-saving heat exchange unit.

[0005] To achieve the above-mentioned purpose, the present invention provides a high-pressure resistant shell and tube energy-saving heat exchanger unit, comprising a shell and a tube sheet matched with the shell, a plurality of heat exchange tubes are installed on the tube sheet, the heat exchange tubes are located in the shell, a tube box is provided on the outside of the tube sheet, the tube box is detachably and fixedly connected to the tube sheet and the shell, a baffle is provided on the heat exchange tube, and also includes a support drive device, the support drive device is used to drive the baffle to press tightly against the inner wall of the shell.

[0006] Furthermore, the heat exchange tube is a U-shaped tube, including a lower tube, a bent tube and an upper tube, and the baffles are alternately provided on the upper tube and the lower tube.

[0007] Furthermore, a side of the baffle abutting against the inner wall of the shell has an elastic material layer.

[0008] Furthermore, a wedge-shaped hole is provided on the baffle, and the support drive device includes a power rod, and a wedge-shaped block is provided on the power rod to match the wedge-shaped hole.

[0009] Furthermore, a mounting groove is provided in the middle of the tube plate, the mounting groove has a through hole, a spring is provided in the mounting groove, and the power rod passes through the spring and the through hole in sequence;

[0010] One end of the power rod is located in the pipe box. A limit plate is provided at the end of the power rod located in the pipe box. The limit plate is slidably matched with the installation groove.

[0011] Furthermore, a partition plate is provided in the middle of the pipe box to divide the pipe box into an upper cavity and a lower cavity, the lower tube is connected to the lower cavity, and the upper tube is connected to the upper cavity;

[0012] The partition plate presses the power rod to move toward the axial direction of the housing.

[0013] Furthermore, the baffle is provided with a through hole for the heat exchange tube to pass through, an elastic ring is provided in the through hole, and the elastic ring has air holes.

[0014] Furthermore, the pipe box is provided with a feed port and a discharge port, the feed port is communicated with the lower cavity, and the discharge port is communicated with the upper cavity;

[0015] The shell is provided with a second feed port and a second discharge port.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The high-pressure shell and tube energy-saving heat exchanger unit of the present invention can dynamically increase the overall structural strength of the present invention through the above-mentioned arrangement of the supporting drive device and the baffle, while reducing the problem of shell-side fluid bypass circulation, which is beneficial to improving heat exchange efficiency, avoiding energy waste, and meeting energy-saving requirements.

[0018] 2. The high-pressure shell and tube energy-saving heat exchanger unit of the present invention realizes the dynamic movement of the baffle through the above-mentioned structure. When disassembly and maintenance are required, the baffle is reset and a gap is left between it and the inner wall of the shell. On the one hand, it can facilitate the disassembly of the heat exchange tubes and baffles, and on the other hand, it can effectively reduce and avoid the problem of damage caused by collision with the shell.

[0019] 3. The high-pressure resistant shell and tube energy-saving heat exchanger unit of the present invention, through the arrangement of elastic rings and air holes, combined with the above-mentioned arrangement of baffles, can provide thermal expansion space for the heat exchange tubes while ensuring structural stability, thereby improving heat exchange efficiency and helping to avoid the problem of dead flow in the shell-side fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view schematically showing a high-pressure resistant shell and tube energy-saving heat exchange unit according to one embodiment of the present invention;

[0021] Figure 2 A schematic diagram showing a front view of a high-pressure resistant shell and tube energy-saving heat exchanger unit according to one embodiment of the present invention;

[0022] Figure 3 A cross-sectional view schematically showing a high-pressure resistant shell and tube energy-saving heat exchange unit according to one embodiment of the present invention;

[0023] Figure 4 Schematic representation Figure 3 Enlarged view of part A in the middle;

[0024] Figure 5 Schematic representation Figure 3 Enlarged view of middle part B;

[0025] Figure 6 A schematic diagram showing the structure of a heat exchange tube according to an embodiment of the present invention;

[0026] Figure 7 A perspective view schematically showing a baffle according to one embodiment of the present invention;

[0027] Figure 8 Schematically showing a front view of a baffle according to one embodiment of the present invention;

[0028] Figure 9 Schematic representation Figure 8 Enlarged view of part C in the middle.

[0029] The meanings of the numbers in the accompanying drawings are as follows:

[0030] 1. Shell; 2. Tube sheet; 3. Heat exchange tube; 4. Tube box; 5. Baffle; 6. Support drive device; 31. Lower tube; 32. Bend tube; 33. Upper tube; 51. Wedge hole; 61. Power rod; 62. Wedge block; 21. Mounting slot; 22. Through hole; 23. Spring; 63. Limit plate; 41. Dividing plate; 52. Through hole; 53. Elastic ring; 54. Air hole; 42. Feed port; 43. Discharge port; 11. Second feed port; 12. Second discharge port. DETAILED DESCRIPTION

[0031] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0033] Combine Figures 1-9As shown, the present invention provides a high-pressure shell and tube heat exchanger unit, including a shell 1 and a tube sheet 2 matched with the shell 1, a plurality of heat exchange tubes 3 are installed on the tube sheet 2, the heat exchange tubes 3 are located in the shell 1, and a tube box 4 is provided on the outside of the tube sheet 2, and the tube box 4 is detachably fixedly connected to the tube sheet 2 and the shell 1.

[0034] In this embodiment, the heat exchange tube 3 is a U-shaped tube, including a lower tube 31, a bent tube 32, and an upper tube 33. Baffles 5 are alternately provided on the upper tube 33 and the lower tube 31. A support drive device 6 is also included, which is used to drive the baffles 5 to press against the inner wall of the shell 1.

[0035] The high-pressure shell and tube type energy-saving heat exchanger unit of the present invention is provided with the above-mentioned structure. After installation, the support drive device 6 can make the baffle 5 tightly against the inner wall of the shell 1, thereby increasing the structural strength of the high-pressure shell and tube type energy-saving heat exchanger unit of the present invention and improving the pressure resistance. Then, with the maintenance cycle (regular disassembly and cleaning are required to ensure heat exchange efficiency), the high-pressure shell and tube type energy-saving heat exchanger unit of the present invention is disassembled, so that the driving effect of the support drive device 6 on the baffle 5 disappears, thereby separating the baffle 5 from the inner wall of the shell 1, thereby facilitating the removal of the heat exchange tube 3 and the baffle 5 from the shell 1, and avoiding the problem of collision or friction between the baffle 5 and the inner wall of the shell 1, which causes damage to the anti-corrosion layer.

[0036] The components of the present invention are described in detail below:

[0037] According to one embodiment of the present invention, the baffle 5 has an elastic material layer on the side that abuts the inner wall of the shell. This arrangement prevents bypass of the shell-side fluid and improves heat exchange efficiency. Furthermore, the elastic contact helps reduce the stress concentration caused by thermal expansion during heat exchange.

[0038] According to one embodiment of the present invention, the baffle 5 is provided with a wedge-shaped hole 51, and the support drive device 6 includes a power rod 61, which is equipped with a wedge-shaped block 62 that engages with the wedge-shaped hole 51. Specifically, a mounting slot 21 is provided in the middle of the tube sheet 2. The mounting slot 21 has a through-hole 22, within which a spring 23 is located. The power rod 61 is inserted through the spring 23 and the through-hole 22. One end of the power rod 61 is located within the tube box 4. A limit plate 63 is provided at the end of the power rod 61 located within the tube box 4. The limit plate 63 slidably engages with the mounting slot 21.

[0039] In the present invention, a partition plate 41 is provided in the middle of the pipe box 4, dividing it into an upper cavity and a lower cavity. The lower tube 31 communicates with the lower cavity, while the upper tube 33 communicates with the upper cavity. The pipe box 4 is provided with an inlet 42 and an outlet 43, with the inlet 42 communicating with the lower cavity and the outlet 43 communicating with the upper cavity. The housing 1 is provided with a second inlet 11 and a second outlet 12.

[0040] The high-pressure shell-and-tube energy-saving heat exchanger of the present invention operates as follows: a first fluid enters the lower cavity of the tube box 4 through the feed port 42, enters the lower tube 31, then passes through the elbow 32 and the upper tube 31 into the upper cavity of the tube box 4, and is discharged through the discharge port 43. Simultaneously, a second fluid enters the interior of the shell 1 through the second feed port 11, exchanges heat with the first fluid in the heat exchange tube 3, and is discharged through the second discharge port.

[0041] During installation, the high-pressure shell-and-tube energy-saving heat exchanger unit of the present invention is compressed by the partition plate 41 to move the power rod 61 axially toward the shell 1. This allows the wedge block 62 to drive the baffle 5 radially outward along the shell 1, pressing against the inner wall of the shell 1. Furthermore, according to one embodiment of the present invention, the baffle 5 is provided with a through hole 52 for the heat exchange tube 3 to pass through. The through hole 52 is provided with an elastic ring 53, which has an air hole 54 therein. The provision of the elastic ring 53, on the one hand, provides space for thermal expansion of the heat exchange tube 3, and on the other hand, the provision of the air hole 54 effectively prevents dead flow in the shell-side fluid.

[0042] The above description is merely one embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-pressure shell-and-tube energy-saving heat exchange unit, comprising a shell (1) and a tube sheet (2) matched with the shell (1), a plurality of heat exchange tubes (3) being mounted on the tube sheet (2), the heat exchange tubes (3) being located inside the shell (1), a tube box (4) being provided on the outside of the tube sheet (2), the tube box (4) being detachably fixedly connected to the tube sheet (2) and the shell (1), and characterized in that: The heat exchange tube (3) is provided with a baffle (5), and further comprises a support drive device (6), wherein the support drive device (6) is used to drive the baffle (5) to press against the inner wall of the shell (1); The heat exchange tube (3) is a U-shaped tube, comprising a lower tube (31), a bent tube (32), and an upper tube (33), and the baffles (5) are alternately provided on the upper tube (33) and the lower tube (31); The baffle (5) has an elastic material layer on one side thereof abutting against the inner wall of the shell (1); The baffle (5) is provided with a wedge-shaped hole (51), the support drive device (6) includes a power rod (61), and the power rod (61) is provided with a wedge-shaped block (62) that cooperates with the wedge-shaped hole (51); A mounting groove (21) is provided in the middle of the tube plate (2), the mounting groove (21) has a through hole (22), a spring (23) is provided in the mounting groove (21), and the power rod (61) is sequentially passed through the spring (23) and the through hole (22); One end of the power rod (61) is located in the pipe box (4), and a limit plate (63) is provided at the end of the power rod (61) located in the pipe box (4), and the limit plate (63) is slidably matched with the installation groove (21); A partition plate (41) is provided in the middle of the pipe box (4) to divide the pipe box (4) into an upper cavity and a lower cavity, the lower tube (31) is connected to the lower cavity, and the upper tube (33) is connected to the upper cavity; The partition plate (41) squeezes the power rod (61) to move in the axial direction of the housing (1); The baffle (5) is further provided with a through hole (52) for the heat exchange tube (3) to pass through, an elastic ring (53) is provided in the through hole (52), and an air hole (54) is provided in the elastic ring (53).

2. The high-pressure resistant shell and tube energy-saving heat exchange unit according to claim 1, characterized in that: The pipe box (4) is provided with a feed port (42) and a discharge port (43), the feed port (42) is communicated with the lower cavity, and the discharge port (43) is communicated with the upper cavity; The housing (1) is provided with a second feed port (11) and a second discharge port (12).

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