Tubular heat exchanger for ship engineering

Abstract

The utility model discloses a tubular heat exchanger for ship engineering, which comprises a heat exchange shell, a detachable upper cover is arranged at the upper end of the heat exchange shell, a detachable lower cover is arranged at the lower end of the heat exchange shell, a heat exchange tube is correspondingly mounted between the upper cover and the lower cover, and mounting holes corresponding to the heat exchange tube in position are formed in the upper cover and the lower cover. And the upper and lower ends of the heat exchange tubes are correspondingly arranged in the mounting holes of the upper cover and the lower cover. According to the device, the flow path of flue gas in the heat exchange shell can be effectively increased through the arranged deflection baffles, the flow time is prolonged, and therefore the heat exchange efficiency is improved; according to the device, the upper cover and the lower cover of the heat exchange shell are detachable, and the heat exchange pipes are correspondingly mounted through the mounting holes in the upper cover and the lower cover, so that the upper cover, the lower cover and the middle heat exchange pipes are detachable, and the heat exchange pipes are convenient to clean, disassemble and replace.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology in marine engineering, specifically a tubular heat exchanger used in marine engineering. Background Technology

[0002] In existing marine engineering, tubular heat exchangers are an important heat exchange device. Ships generate a lot of energy during navigation, such as in the fuel system and exhaust gas. Directly emitting these gases would waste a lot of energy, so heat exchangers are needed to recover the heat.

[0003] In the existing technology, tubular heat exchangers are mainly composed of tube sheets, heat exchange tubes, baffles, etc. Many parallel tubes are installed, and the two ends of the tube bundle are welded to the tube sheet (commonly known as tube sheet). The inlet and outlet flue pipes are connected to the two ends of the tube sheet, and the space between the tube sheet and the tube sheet constitutes a fluid distribution chamber. Heat recovery from the flue gas is achieved through the internal heat exchange tubes.

[0004] The technical structure of existing tubular heat exchangers is as follows: In the technical solution of "a tubular heat exchanger" disclosed in Publication (Announcement) No.: CN114623704A, heat exchange is achieved by setting up heat exchange pipes with adjustable positions, thereby improving heat exchange efficiency.

[0005] For example, the "Shell-and-tube heat exchanger" disclosed in Publication (Announcement) No. CN113280656A uses circulating pipes arranged in the end caps on both sides to achieve heat exchange, which increases the flow effect and facilitates disassembly and installation.

[0006] In existing technologies, baffles are usually installed in tubular heat exchangers. The purpose of the baffles is to increase the flow path of the medium and the flow time of the medium in the shell, thereby increasing the heat exchange efficiency.

[0007] However, in actual use, the baffles inside the shell are usually fixedly installed, as are the internal heat exchange tubes, making them inconvenient to disassemble. But the outer wall of the heat exchange tubes and the baffles usually come into direct contact with the flue gas, which contains a lot of corrosive elements that can easily corrode the heat exchange tubes and baffles. The fixed installation in the existing technology makes it inconvenient to disassemble the heat exchange tubes and baffles, which leads to difficulties in cleaning and replacement. Over time, this will affect the heat exchange efficiency and heat exchange quality.

[0008] Therefore, in order to solve the above problems, it is necessary to develop a tubular heat exchanger for flue gas treatment that has a reasonable structure and is easy to disassemble, clean, and replace. Utility Model Content

[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a tubular heat exchanger for marine engineering; the technical solution is as follows:

[0010] A tubular heat exchanger for marine engineering includes a heat exchange shell, a removable upper cover at the upper end of the heat exchange shell, and a removable lower cover at the lower end. A heat exchange tube is installed between the upper cover and the lower cover, and mounting holes corresponding to the positions of the heat exchange tubes are provided on the upper cover and the lower cover. The upper and lower ends of the heat exchange tubes are respectively installed in the mounting holes of the upper cover and the lower cover.

[0011] A flue gas inlet pipe is provided on the upper left side of the heat exchange shell, and a flue gas outlet pipe is provided on the lower right side. A transversely arranged baffle is also installed inside the heat exchange shell. The baffles are evenly spaced vertically inside the heat exchange shell. The baffles are provided with perforations corresponding to the positions of the heat exchange tubes. The heat exchange tubes pass through the perforations. A flow gap is left between the baffles and the side wall of the heat exchange shell. The flow gaps of two adjacent baffles are set in opposite directions.

[0012] Furthermore, a detachable vertical rod is installed between the upper cover and the lower cover, and the baffle is detachably installed on the vertical rod. The vertical rod has several circumferentially arranged slots from top to bottom, and the size of the slots increases from top to bottom. The baffle is provided with slot holes corresponding to the positions of the slots, and the size of the slots at different heights is adapted to the size of the slots at different heights on the vertical rod. Through the cooperation of the slots and slots, the baffle is placed on the vertical rod from bottom to top, and when the upper cover is removed, the baffle can be removed from the vertical rod.

[0013] Furthermore, the heat exchange shell is a cylindrical structure, the baffle is a circular plate structure, and the flow gap on the baffle is an arc-shaped structure.

[0014] Furthermore, the perforations on the baffle plate are evenly spaced in a circumferential manner, and there are two rings of perforations, one inner and one outer. The position of the perforations does not conflict with the position of the flow gap.

[0015] Furthermore, the vertical rod is positioned in the middle of the upper and lower covers, and the vertical rod is a detachable installation structure.

[0016] Furthermore, an installation cylinder is provided at the middle position of both the upper and lower covers. The size of the installation cylinder at the upper and lower positions is adapted to the size of the upper and lower ends of the vertical rod, and the upper and lower ends of the vertical rod are correspondingly fitted into the upper and lower installation cylinders.

[0017] Furthermore, both the inlet pipe and the outlet pipe are provided with mounting flanges at their ends, and the mounting flanges are also provided with fastening holes.

[0018] Beneficial effects: This utility model has the following beneficial effects:

[0019] 1) The baffles installed in this device can effectively increase the flow path of flue gas in the heat exchange shell and increase the flow time, thereby improving the heat exchange efficiency;

[0020] 2) In this device, both the upper and lower covers of the heat exchange shell are removable, and the heat exchange tubes can be installed through the mounting holes on the upper and lower covers. This makes it easy to clean, disassemble, and replace the heat exchange tubes.

[0021] 3) The baffles inside the heat exchange shell of this device can also be disassembled, which facilitates the cleaning and replacement of the baffles in the future;

[0022] 4) In this device, the baffle is installed and disassembled through the middle vertical rod. The middle vertical rod is provided with an annular groove, while the baffle is provided with holes of different sizes. The baffle is installed on the vertical rod and disassembled by the cooperation of the holes and grooves.

[0023] 5) The vertical rod in this device is also detachable at the position between the upper and lower covers. Both the upper and lower covers are equipped with mounting cylinders, which are used to install the vertical rod, making it convenient for the subsequent installation of the baffle and the vertical rod. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present utility model;

[0025] Figure 2 for Figure 1 A-direction view;

[0026] Figure 3 for Figure 1 BB view;

[0027] Figure 4 This is a schematic diagram of the installation of the baffle in this utility model;

[0028] The components include: heat exchange shell 1; upper cover 2; lower cover 3; heat exchange tube 4; mounting hole 5; inlet pipe 6; outlet pipe 7; baffle 8; perforation 9; flow gap 10; vertical rod 11; slot 12; slot 13; mounting cylinder 14; mounting flange 15; and fastening hole 16. Detailed Implementation

[0029] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a tubular heat exchanger for marine engineering includes a heat exchange shell 1. The upper end of the heat exchange shell 1 is provided with a detachable upper cover 2, and the lower end is provided with a detachable lower cover 3. A heat exchange tube 4 is installed between the upper cover 2 and the lower cover 3. The upper cover 2 and the lower cover 3 are provided with mounting holes 5 corresponding to the positions of the heat exchange tube 4. The upper and lower ends of the heat exchange tube 4 are respectively set in the mounting holes 5 of the upper cover 2 and the lower cover 3.

[0031] A flue gas inlet pipe 6 is provided on the upper left side of the heat exchange shell 1, and a flue gas outlet pipe 7 is provided on the lower right side. A horizontally arranged baffle 8 is also installed inside the heat exchange shell 1. The baffle 8 is evenly spaced vertically inside the heat exchange shell 1. The baffle 8 is provided with a perforation 9 corresponding to the position of the heat exchange tube 4. The heat exchange tube 4 passes through the perforation 9. A flow gap 10 is left between the baffle 8 and the side wall of the heat exchange shell 1. The flow gap 10 of two adjacent baffles 8 is set in opposite directions.

[0032] like Figure 4 As shown, a detachable vertical rod 11 is installed between the upper cover 2 and the lower cover 3, and the baffle 8 is detachably installed on the vertical rod 11. The vertical rod 11 has several circumferentially arranged slots 12 from top to bottom, and the size of the slots 12 increases from top to bottom. The baffle 8 is provided with slot holes 13 corresponding to the positions of the slots 12. The slot holes 13 at different heights are adapted to the size of the slots 12 at different heights on the vertical rod 11. Through the cooperation of the slots 12 and the slot holes 13, the baffle 8 is placed on the vertical rod 11 from bottom to top. When the upper cover 2 is removed, the baffle 8 can be removed from the vertical rod 11.

[0033] The heat exchange shell 1 is a cylindrical structure, while the baffle 8 is a circular plate structure, and the flow gap 10 on the baffle 8 is an arc-shaped structure.

[0034] The perforations 9 on the baffle plate 8 are evenly spaced in a circumferential pattern, and there are two rings of perforations 9, one inner and one outer. The position of the perforations 9 does not conflict with the position of the flow gap 10.

[0035] The vertical rod 11 is located in the middle of the upper cover 2 and the lower cover 3, and the vertical rod 11 is a detachable installation structure.

[0036] An installation cylinder 14 is provided at the middle position of both the upper cover 2 and the lower cover 3. The size of the installation cylinder 14 at the upper and lower positions is adapted to the size of the upper and lower ends of the vertical rod 11. The upper and lower ends of the vertical rod 11 are respectively fitted into the upper and lower installation cylinders 14.

[0037] Both the inlet pipe 6 and the outlet pipe 7 are equipped with mounting flanges 15, and the mounting flanges 15 are also equipped with fastening holes 16.

[0038] The specific working process and working principle of this device are as follows: In this device, flue gas enters from the inlet pipe and exits from the outlet pipe. Water or air enters from the heat exchange tubes. When the flue gas flows in the heat exchange shell, it will flow in an S-direction through the flow gap due to the baffle, and then exit from the outlet pipe. This increases the overall flow path of the flue gas and increases the heat exchange efficiency.

[0039] However, the baffles and heat exchange tubes will be constantly corroded by flue gas and pollutants will accumulate on their surfaces. In this device, the upper cover and the lower cover are both detachable structures. The upper and lower ends of the heat exchange tubes are installed in the mounting holes of the upper and lower covers respectively. The baffles themselves are set at intervals in the heat exchange shell, but the baffles in this device are set separately, not fixedly.

[0040] In this device, a detachable vertical rod is installed at the middle position of the upper and lower covers. The vertical rod is provided with annular slots at different positions at the top and bottom. The baffle is provided with a corresponding slot hole at the middle position. The size of the slot hole at different positions is consistent with the size of the slot at different positions. Therefore, the baffle can be snapped onto the vertical rod. After the baffle is set into a suitable shape, it can be placed in the heat exchange shell with the support of the vertical rod.

[0041] Meanwhile, the vertical rod is also detachable and installable. There is a mounting cylinder in the middle of the upper and lower cover. The upper and lower ends of the vertical rod can be fixed in the mounting cylinder. When disassembling, first remove the upper cover, and then remove the layers of baffles on the vertical rod for cleaning or replacement. The structure is very reasonable.

[0042] The above-described specific embodiments are merely preferred embodiments of this utility model and are not intended to limit the implementation of this utility model or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of protection of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. A tubular heat exchanger for marine engineering, characterized in that: The heat exchange housing (1) includes a heat exchange housing (1) with a detachable upper cover (2) at the upper end and a detachable lower cover (3) at the lower end. A heat exchange tube (4) is installed between the upper cover (2) and the lower cover (3). The upper cover (2) and the lower cover (3) are provided with mounting holes (5) corresponding to the positions of the heat exchange tube (4). The upper and lower ends of the heat exchange tube (4) are respectively installed in the mounting holes (5) of the upper cover (2) and the lower cover (3). The heat exchange shell (1) has an inlet pipe (6) on the upper left side and an outlet pipe (7) on the lower right side. The heat exchange shell (1) is also equipped with a horizontally arranged baffle (8). The baffle (8) is evenly spaced vertically within the heat exchange shell (1). The baffle (8) has a perforation (9) corresponding to the position of the heat exchange tube (4). The heat exchange tube (4) passes through the perforation (9). A flow gap (10) is left between the baffle (8) and the side wall of the heat exchange shell (1). The flow gaps (10) of two adjacent baffles (8) are set in opposite directions. A detachable vertical rod (11) is also installed between the upper cover (2) and the lower cover (3), and the baffle (8) is detachably installed on the vertical rod (11).

2. A tubular heat exchanger for marine engineering according to claim 1, characterized in that: The vertical rod (11) is provided with several circumferentially arranged slots (12) from top to bottom. The size of the slots (12) increases from top to bottom. The baffle (8) is provided with slot holes (13) corresponding to the positions of the slots (12). The slot holes (13) at different heights are adapted to the size of the slots (12) at different heights on the vertical rod (11). Through the cooperation of the slots (12) and the slot holes (13), the baffle (8) is placed on the vertical rod (11) from bottom to top. When the top cover (2) is removed, the baffle (8) can be removed from the vertical rod (11).

3. A tubular heat exchanger for marine engineering according to claim 2, characterized in that: The heat exchange shell (1) is a cylindrical structure, the baffle (8) is a circular plate structure, and the flow gap (10) on the baffle (8) is an arc-shaped structure.

4. A tubular heat exchanger for marine engineering according to claim 3, characterized in that: The perforations (9) on the baffle (8) are evenly spaced in a circumferential manner, and there are two rings of perforations (9) in total. The position of the perforations (9) does not conflict with the position of the flow gap (10).

5. A tubular heat exchanger for marine engineering according to claim 2, characterized in that: The vertical rod (11) is located in the middle of the upper cover (2) and the lower cover (3), and the vertical rod (11) is a detachable installation structure.

6. A tubular heat exchanger for marine engineering according to claim 5, characterized in that: The upper cover (2) and the lower cover (3) are respectively provided with mounting cylinders (14) at the middle position. The size of the mounting cylinders (14) at the upper and lower positions is adapted to the size of the upper and lower ends of the vertical rod (11). The upper and lower ends of the vertical rod (11) are respectively fitted into the upper and lower mounting cylinders (14).

7. A tubular heat exchanger for marine engineering according to claim 2, characterized in that: The ends of the inlet pipe (6) and the outlet pipe (7) are respectively provided with mounting flanges (15), and the mounting flanges (15) are also provided with fastening holes (16).

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