Brazed heat exchanger for marine main engine waste heat

Abstract

This utility model discloses a brazed heat exchanger for waste heat from a ship's main engine, relating to the field of heat exchangers. It includes a heat exchanger body and a base plate. A base is fixed to the upper end of the base plate. Fixing plates are symmetrically arranged on both sides of the heat exchanger body. Pin holes are formed in the fixing plates. Positioning holes are formed on the inner side of the base. The fixing plates are inserted into the positioning holes. A fixing mechanism is provided on the inner side of the base. Using this structure, the fixing plates on the heat exchanger body are inserted into the positioning holes on the base. Then, the operating mechanism and fixing mechanism on the base work together to facilitate the assembly and disassembly of the heat exchanger body.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchangers, and specifically relates to a brazed heat exchanger for waste heat from ship main engines. Background Technology

[0002] As a widely used heat exchange device in modern ships, the performance of marine heat exchangers directly affects the ship's energy consumption. Currently, they are widely used as main engine cylinder liner water and lubricating oil coolers and intercoolers in large ships. Especially in recent years, they have seen significant development. Heat exchangers are used in processes such as lubricating oil cooling of ship main engines and auxiliary engines, low-temperature fresh water cooling, fuel temperature control or desalination devices, and steam condensation. Therefore, heat exchangers have become an indispensable and important piece of equipment in modern ships, playing a crucial role in the safe operation of vessels. Currently, the development and application of waste heat recovery technology for ship main engines in China is still in its initial stage. Traditional heat exchangers for ship waste heat recovery are brazed heat exchangers, which require disassembly, repair, or replacement once damaged.

[0003] A search revealed that Chinese Patent CN216845848U discloses a brazed heat exchanger for waste heat from a marine main engine. The device includes a heat exchanger body and a fixed base. A front fixed plate and a rear fixed plate are respectively provided on the front and rear sides of the heat exchanger body. A water inlet is provided at the front end of the front fixed plate. Slots are provided on the bottom left and right sides of both the front and rear fixed plates. The bottom ends of both the front and rear fixed plates are connected to the fixed base. The fixed base includes a base plate, fixing bolts, a first fixing seat, and a second fixing seat. A groove is provided along the edge of the base plate. With fixing bolts, the top front and rear sides of the base plate are respectively welded with a first fixing seat and a second fixing seat, and the bottom ends of the front fixing plate and the rear fixing plate are respectively connected to the first fixing seat and the second fixing seat; At present, the traditional brazed heat exchanger for waste heat of marine main engines still has some shortcomings in actual use. For example, when the exchanger is disassembled and replaced on the fixed base, it is necessary to pull out the movable rod on the four pins on the fixed base, and then pull the four pins at the same time to remove the fixed plate part of the exchanger from the outer shell of the fixed base. The operation is difficult and inconvenient. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a brazed heat exchanger for waste heat from ship main engines, so as to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A brazed heat exchanger for waste heat from a ship's main engine includes a heat exchanger body and a base plate. A base is fixed to the upper end of the base plate. Fixing plates are symmetrically arranged on both sides of the heat exchanger body. Pin holes are opened in the fixing plates. Positioning holes are opened on the inner side of the base. The fixing plates are inserted into the inner side of the positioning holes. A fixing mechanism is provided on the inner side of the base.

[0007] The fixing mechanism includes a second mounting groove, which is symmetrically opened at the lower end of the base. The same bidirectional screw is rotatably connected in the second mounting groove. A movable plate is slidably connected in the second mounting groove. The movable plate is threaded to the outside of the bidirectional screw. A fixing pin is symmetrically fixed on one side of the movable plate. A through hole is opened in the inner wall of the second mounting groove. One end of the fixing pin is movably connected to the pin hole of the fixing plate. An operating mechanism is provided on the outside of the bidirectional screw.

[0008] The operating mechanism includes a first mounting slot, which is located at the lower end of the base. A rotating rod is rotatably connected within the first mounting slot. A mounting plate is fixed to one end of the rotating rod, and an operating handle is provided on the outer side of the mounting plate. A second bevel gear is fixed to the other end of the rotating rod, and a first bevel gear is fixed to the outer side of the bidirectional screw. The first bevel gear and the second bevel gear are meshed together.

[0009] As a preferred technical solution, the operating handle includes a sleeve, which is fixed inside the mounting plate. A stud is threaded to the inner side of the sleeve, and a plug is fixed to one end of the stud. A slot is provided on the outer side of the base, and the plug and the slot are movably connected. A handle is fixed to the other end of the stud.

[0010] As a preferred technical solution, a limiting block is fixed on the outer side of the stud, and the limiting block is located at the end of the stud near the plug.

[0011] As a preferred technical solution, a support plate is fixed in the first mounting groove, and one end of the rotating rod passes through the support plate.

[0012] As a preferred technical solution, the inner side of the second mounting groove is symmetrically provided with limiting grooves, and the end of the movable plate slides in the limiting groove.

[0013] As a preferred technical solution, a pin groove is provided on the inner side of the positioning hole, and one end of the fixing pin is movably connected to the pin groove.

[0014] As a preferred technical solution, the outer side of the movable plate is symmetrically provided with two fixing pins, one end of which corresponds to the pin groove.

[0015] In summary, the present invention has the following main advantages:

[0016] First, by inserting the fixing plate on the heat exchanger body into the positioning hole on the base, and then combining the operating mechanism and fixing mechanism on the base, the heat exchanger body can be easily disassembled and used.

[0017] Secondly, the design of the operating handle on the operating mechanism can improve the stability of the heat exchanger body when it is fixed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a bottom view of the base of this utility model;

[0021] Figure 4 This is a schematic diagram of the operating handle structure of this utility model.

[0022] Reference numerals: 1. Base plate; 2. Base; 3. Heat exchanger body; 4. Fixing plate; 5. Operating mechanism; 501. First mounting slot; 502. Rotating rod; 503. Mounting plate; 504. Operating handle; 505. First bevel gear; 506. Second bevel gear; 6. Pin hole; 7. Positioning hole; 8. Fixing mechanism; 801. Second mounting slot; 802. Bidirectional screw; 803. Movable plate; 804. Fixing pin; 805. Through hole; 9. Limiting slot; 10. Pin groove; 11. Support plate; 12. Limiting block; 5041. Sleeve; 5042. Stud; 5043. Rotary handle; 5044. Plug; 5045. Slot. Detailed Implementation

[0023] refer to Figures 1 to 4 This embodiment describes a brazed heat exchanger for waste heat from a ship's main engine, comprising a heat exchanger body 3 and a base plate 1. A base 2 is fixed to the upper end of the base plate 1. Fixing plates 4 are symmetrically arranged on both sides of the heat exchanger body 3. Pin holes 6 are opened in the fixing plates 4. Positioning holes 7 are opened on the inner side of the base 2. The fixing plates 4 are inserted into the inner side of the positioning holes 7. A fixing mechanism 8 is provided on the inner side of the base 2. The heat exchanger body 3 is a known prior art product and will not be described in detail here. For details, please refer to Chinese Patent Publication No. CN216845848U, which discloses a brazed heat exchanger for waste heat from a ship's main engine.

[0024] The fixing mechanism 8 includes a second mounting groove 801, which is symmetrically located at the lower end of the base 2. A bidirectional screw 802 is rotatably connected within the second mounting groove 801. A movable plate 803 is slidably connected within the second mounting groove 801, and the movable plate 803 is threaded to the outside of the bidirectional screw 802. A fixing pin 804 is symmetrically fixed to one side of the movable plate 803. A through hole 805 is provided on the inner wall of the second mounting groove 801. One end of the fixing pin 804 is movably connected to the pin hole 6 of the fixing plate 4. An operating mechanism 5 is provided on the outer side of the bidirectional screw 802. The threads at both ends of the bidirectional screw 802 are opposite. When the operating handle 504 rotates in the forward direction, the movable plates 803 in the two second mounting slots 801 at the lower end of the base 2 move away from each other due to the transmission effect. This is to fix the fixed plate 4 in the base 2. The operating mechanism 5 includes a first mounting slot 501, which is opened at the lower end of the base 2. A rotating rod 502 is rotatably connected in the first mounting slot 501. One end of the rotating rod 502 is fixed with a mounting plate 503. An operating handle 504 is provided on the outer side of the mounting plate 503. A second bevel gear 506 is fixed to the other end of the rotating rod 502, and a first bevel gear 505 is fixed to the outer side of the bidirectional screw 802. The first bevel gear 505 and the second bevel gear 506 are meshed together. By rotating the rotating rod 502 in the first mounting groove 501 through the operating handle 504, the second bevel gear 506 at the end of the rotating rod 502 meshes with and drives the first bevel gear 505, so that the bidirectional screw 802 connected to the first bevel gear 505 can rotate within the base 2. The rotation of the bidirectional screw 802 allows the two movable plates 803 connected by the outer thread to move closer to or further away from each other. When the movable plates 803 move further away from each other, the fixing pin 804 on the movable plate 803 can pass through the through hole 805 and the pin hole 6 on the fixing plate 4. At this time, the heat exchanger body 3 is fixed on the base 2. Conversely, when the fixing pin 804 is disengaged from the pin hole 6, the fixing plate 4 part of the heat exchanger body 3 can be directly removed from the base 2, so that the heat exchanger body 3 can be quickly disassembled and replaced.

[0025] The operating handle 504 includes a sleeve 5041, which is fixed to the inner side of the mounting plate 503. A stud 5042 is threaded onto the inner side of the sleeve 5041. A plug 5044 is fixed to one end of the stud 5042. A slot 5045 is provided on the outer side of the base 2. The plug 5044 and the slot 5045 are movably connected. A handle 5043 is fixed to the other end of the stud 5042. The operating handle 5044 can be easily adjusted through the sleeve 5041 portion of the mounting plate 503. When the tray 503 is in operation, and the heat exchanger body 3 is fixed, when the fixing pin 804 passes through the fixing plate 4 at the positioning hole 7 and abuts against the pin groove 10, the position of the plug 5044 corresponds exactly to the slot 5045 on the base 2. By rotating the stud 5042 with the handle 5043, the thread of the sleeve 5041 is extended and retracted, so that the plug 5044 at one end of the stud 5042 is inserted into the slot 5045, which can further improve the stability of fixing the heat exchanger body 3.

[0026] refer to Figure 4 A limiting block 12 is fixed on the outer side of the stud 5042. The limiting block 12 is located at one end of the stud 5042 near the plug 5044. The limiting block 12 on the stud 5042 can limit the stud 5042 and prevent the stud 5042 from coming out of the sleeve 5041.

[0027] refer to Figure 3 A support plate 11 is fixed inside the first mounting groove 501. One end of the rotating rod 502 passes through the support plate 11. Through the support plate 11 of the first mounting groove 501, the rotating rod 502 can rotate stably in the first mounting groove 501. At the same time, the meshing transmission between the second bevel gear 506 on the rotating rod 502 and the first bevel gear 505 on the bidirectional screw 802 is also more stable.

[0028] refer to Figure 3 The second mounting groove 801 has symmetrically provided limiting grooves 9 on its inner side. The end of the movable plate 803 slides in the limiting groove 9. The movable plate 803 can be limited by the limiting groove 9 at the second mounting groove 801. When the heat exchanger body 3 is disassembled, the movable plates 803 approach each other and are limited by the limiting groove 9. At this time, the fixing pin 804 on the movable plate 803 is separated from the pin hole 6 on the fixing plate 4. At this time, the heat exchanger body 3 can be easily disassembled.

[0029] refer to Figure 3 The positioning hole 7 has a pin groove 10 on its inner side. One end of the fixing pin 804 is movably connected to the pin groove 10. After the fixing pin 804 moves through the fixing plate 4 and is inserted into the pin groove 10 through the pin groove 10 in the positioning hole 7, the fixing effect on the heat exchanger body can be further enhanced.

[0030] refer to Figure 3 Two fixing pins 804 are symmetrically arranged on the outer side of the movable plate 803. One end of the fixing pin 804 corresponds to the pin groove 10. The fixing strength of the heat exchanger body 3 can be improved by the two symmetrically arranged fixing pins 804 on the movable plate 803.

[0031] Operating principle and advantages: During use, the rotating rod 502 is rotated in the first mounting groove 501 by operating handle 504, so that the second bevel gear 506 at the end of the rotating rod 502 meshes with the first bevel gear 505, so that the bidirectional screw 802 connected to the first bevel gear 505 can rotate in the base 2. The rotation of the bidirectional screw 802 allows the two movable plates 803 connected by the outer threads to move closer or further apart. When the movable plates 803 move further apart, the fixing pin 804 on the movable plate 803 can pass through the through hole 805 and the pin hole 6 on the fixing plate 4. At this time, the heat exchanger body 3 is fixed on the base 2. Conversely, when the fixing pin 804 is disengaged from the pin hole 6, the fixing plate 4 part of the heat exchanger body 3 can be directly removed from the base 2.

[0032] When fixing the heat exchanger body 3, the mounting plate 503 can be easily operated through the sleeve 5041 part of the mounting plate 503. At the same time, when the heat exchanger body 3 is fixed, when the fixing pin 804 passes through the fixing plate 4 at the positioning hole 7 and abuts against the pin groove 10, the position of the plug 5044 corresponds exactly to the slot 5045 on the base 2. By rotating the stud 5042 with the handle 5043, the thread of the stud 5042 at the sleeve 5041 is extended and retracted, so that the plug 5044 at one end of the stud 5042 is inserted into the slot 5045, ensuring stable installation.

Claims

1. A brazed heat exchanger for recovering waste heat from a marine main engine, characterized by, The heat exchanger body (3) and base plate (1) are included. A base (2) is fixed to the upper end of the base plate (1). Fixing plates (4) are symmetrically arranged on both sides of the heat exchanger body (3). Pin holes (6) are opened in the fixing plates (4). A positioning hole (7) is opened on the inner side of the base (2). The fixing plates (4) are inserted into the inner side of the positioning hole (7). A fixing mechanism (8) is provided on the inner side of the base (2). The fixing mechanism (8) includes a second mounting groove (801), which is symmetrically opened at the lower end of the base (2). The same bidirectional screw (802) is rotatably connected in the second mounting groove (801). A movable plate (803) is slidably connected in the second mounting groove (801). The movable plate (803) is threaded to the outside of the bidirectional screw (802). A fixing pin (804) is symmetrically fixed on one side of the movable plate (803). A through hole (805) is opened in the inner wall of the second mounting groove (801). One end of the fixing pin (804) is movably connected to the pin hole (6) of the fixing plate (4). An operating mechanism (5) is provided on the outside of the bidirectional screw (802). The operating mechanism (5) includes a first mounting groove (501), which is located at the lower end of the base (2). A rotating rod (502) is rotatably connected in the first mounting groove (501). A mounting plate (503) is fixed at one end of the rotating rod (502). An operating handle (504) is provided on the outside of the mounting plate (503). A second bevel gear (506) is fixed at the other end of the rotating rod (502). A first bevel gear (505) is fixed on the outside of the bidirectional screw (802). The first bevel gear (505) and the second bevel gear (506) are meshed together.

2. The brazed heat exchanger for recovering waste heat from a marine engine according to claim 1, characterized in that: The operating handle (504) includes a sleeve (5041), which is fixed inside the mounting plate (503). A stud (5042) is threaded onto the inner side of the sleeve (5041). A plug (5044) is fixed to one end of the stud (5042). A slot (5045) is provided on the outer side of the base (2). The plug (5044) and the slot (5045) are movably connected. A handle (5043) is fixed to the other end of the stud (5042).

3. A brazed heat exchanger for waste heat from a ship's main engine according to claim 2, characterized in that: A limiting block (12) is fixed on the outside of the stud (5042), and the limiting block (12) is located at the end of the stud (5042) near the plug (5044).

4. A brazed heat exchanger for waste heat from a ship's main engine according to claim 1, characterized in that: A support plate (11) is fixed inside the first mounting groove (501), and one end of the rotating rod (502) passes through the support plate (11).

5. A brazed heat exchanger for waste heat from a ship's main engine according to claim 1, characterized in that: The second mounting groove (801) has symmetrically provided limiting grooves (9) on its inner side, and the end of the movable plate (803) slides in the limiting groove (9).

6. A brazed heat exchanger for waste heat from a ship's main engine according to claim 1, characterized in that: A pin groove (10) is provided on the inner side of the positioning hole (7), and one end of the fixing pin (804) is movably connected to the pin groove (10).

7. A brazed heat exchanger for waste heat from a ship's main engine according to claim 6, characterized in that: The movable plate (803) has two symmetrical fixing pins (804) on its outer side, and one end of the fixing pin (804) corresponds to the pin groove (10).

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