A marine plate heat exchanger with noise reduction structure

Abstract

This utility model discloses a marine plate heat exchanger with a noise reduction structure, relating to the field of heat exchanger technology. It includes a heat exchanger body, with a mounting plate fixedly connected to its bottom end. A fixing frame is fixedly connected to one side of the top of the mounting plate. An adjustment component is provided on one side of the fixing frame. A lifting plate is slidably connected to one side of the fixing frame via the adjustment component. A disassembly component is provided on one side of the lifting plate. A noise reduction cover is connected to one side of the lifting plate via the disassembly component. The noise reduction cover includes a protective sound insulation layer, which is located below the lifting plate. This utility model, using the above structure and by setting the adjustment component and the disassembly component, allows an integrated noise reduction cover to cover one side of the heat exchanger body at once, eliminating the need to install multiple noise reduction plates individually. This significantly reduces installation steps, makes operation convenient, requires no specialized tools or large amounts of manpower, and significantly saves time and costs for installation and subsequent maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a plate heat exchanger for ships with a noise reduction structure. Background Technology

[0002] In the navigation and operation of marine vessels, the engine room serves as the core of the power system, and its operating status directly determines the safety and efficiency of the vessel's navigation. When the engine room is working, the combustion of internal fuel and the friction of mechanical parts continuously generate heat. At the same time, the cooling oil and circulating water entering the engine room need to be maintained within a specific temperature range. Therefore, a marine plate heat exchanger is required. Through the spaced arrangement of multiple sets of heat exchange plates inside, heat exchange is completed by utilizing the thermal conductivity of the metal plates, which quickly reduces the temperature of the oil and water entering the engine room to a safe range. This provides reliable temperature protection for the continuous operation of the ship's engine room and is an indispensable key auxiliary device in the marine vessel's power system.

[0003] For example, Chinese patent CN222773833U discloses a marine plate heat exchanger with a noise reduction structure, including a front plate with a medium inlet and outlet on its front surface, and a rear plate with heat exchange plates installed between the rear plate and the front plate. The rear plate and the front plate are connected by a noise reduction structure, which enables the sound-insulating side plate to reduce and isolate noise between the heat exchange plates through the side end of the connecting rod and the sound-insulating top cover. The noise reduction structure includes a connecting rod with slots on both the upper and lower sides. The rear plate and the front plate have corresponding openings with the connecting rod penetrating through them.

[0004] While the aforementioned patents have solved the problem of excessive noise between the heat exchange medium and the heat exchange plate during the heat exchange process, which affects the performance of the heat exchanger, there are still some shortcomings that need to be improved. Specifically, the soundproof top cover and soundproof side panels mostly adopt a single-layer structure. This simple structure has limited noise reduction capabilities and is difficult to effectively cope with the complex and noisy operating environment of ships. In addition, installing multiple single-layer soundproof side panels on the heat exchanger not only makes the installation operation cumbersome and consumes a lot of manpower and time costs, but also increases the overall complexity of the equipment due to the installation layout of multiple side panels. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a marine plate heat exchanger with a noise reduction structure to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A marine plate heat exchanger with a noise reduction structure includes a heat exchanger body, an installation plate fixedly connected to the bottom end of the heat exchanger body, a fixing frame fixedly connected to one side of the top end of the installation plate, an adjustment component provided on one side of the fixing frame, a lifting plate slidably connected to one side of the fixing frame through the adjustment component, a disassembly and assembly component provided on one side of the lifting plate, and a noise reduction cover connected to one side of the lifting plate through the disassembly and assembly component.

[0008] The noise reduction cover includes a protective sound insulation layer located on the lower side of the lifting plate. A secondary sound absorption layer is fixedly connected to the inner side of the protective sound insulation layer. A sound insulation barrier layer is fixedly connected to the inner side of the secondary sound absorption layer. A porous sound absorption layer is fixedly connected to the inner side of the sound insulation barrier layer. A damping buffer layer is fixedly connected to the inner side of the porous sound absorption layer. The damping buffer layer covers one side of the heat exchanger body.

[0009] As a preferred technical solution, the adjustment component includes a motor, which is fixedly connected to the top of the fixed frame. A worm gear is fixedly connected to the output end of the motor. A worm wheel is meshed with one side of the worm gear. A lead screw is fixedly connected to one side of the worm wheel. The lead screw is rotatably connected inside the fixed frame. A screw block is threadedly connected to the outer surface of the lead screw. A lifting plate is fixedly connected to one side of the screw block. The disassembly and assembly component is located on the lifting plate.

[0010] As a preferred technical solution, the fixing frame has a first guide groove on both sides inside, and a first guide block is slidably connected inside the first guide groove. One side of the first guide block is fixedly connected to one side of the screw block.

[0011] As a preferred technical solution, the disassembly and assembly assembly includes a docking groove, which is opened on one side of the lifting plate. A docking block is inserted into the docking groove, and one side of the docking block is fixedly connected to one side of the noise reduction cover. A slider is slidably connected inside the lifting plate. Positioning blocks are fixedly connected to both sides of one end of the slider. One side of the positioning block passes through the docking groove and is inserted into the inside of the docking block. A return spring is fixedly connected between the slider and the inside of the lifting plate. The slider is slidably connected inside the lifting plate. A transmission rod is fixedly connected to the side of the slider located on the return spring. A transmission block is fixedly connected to the side of the transmission rod away from the slider. The transmission block is slidably connected inside the lifting plate. A pull rod is fixedly connected to the side of the transmission block away from the transmission rod.

[0012] As a preferred technical solution, a second guide groove is provided on both sides of the inside of the lifting plate, and a second guide block is slidably connected inside the second guide groove. One side of the second guide block is fixedly connected to one side of the transmission block.

[0013] As a preferred technical solution, the bottom end of the mounting plate is fixedly connected to a shock absorber, and four shock absorbers are provided. The bottom end of the shock absorber is fixedly connected to a base plate.

[0014] In summary, the present invention has the following main advantages:

[0015] First, this utility model comprises a noise reduction cover consisting of a protective sound insulation layer, a secondary sound absorption layer, a sound insulation barrier layer, a porous sound absorption layer, and a damping buffer layer arranged sequentially from the outside to the inside. The innermost damping buffer layer can directly absorb the noise generated by the vibration of the heat exchanger body, reducing the transmission of vibration to the outside. The porous sound absorption layer and the secondary sound absorption layer, through their porous structure, respectively absorb mid-to-high frequency noise and residual noise. The sound insulation barrier layer can block the transmission of unabsorbed mid-to-low frequency noise to the outside. The outermost protective sound insulation layer serves as the last barrier, further blocking the leakage of high-frequency noise. The multi-layered synergistic noise reduction structure can comprehensively cope with the complex noise generated during ship operation, effectively reduce noise interference when the heat exchanger is working, and create a quieter operating environment for the ship's engine room.

[0016] Secondly, by setting up adjustment components and disassembly components, this utility model allows the integrated noise reduction cover to cover one side of the heat exchanger body at once, eliminating the need to install multiple noise reduction plates one by one, greatly reducing installation steps, making operation convenient, requiring no professional tools and a large amount of manpower, and significantly saving time and costs for installation and subsequent maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the separation structure of the noise reduction cover and the heat exchanger body of this utility model;

[0019] Figure 3 This is a utility model Figure 1 A magnified structural diagram at point A;

[0020] Figure 4 This is a utility model Figure 1 A magnified structural diagram at point B;

[0021] Figure 5 This is a schematic diagram of the noise reduction cover structure of this utility model.

[0022] Reference numerals in the attached drawings: 1. Heat exchanger body; 2. Noise reduction cover; 201. Damping buffer layer; 202. Porous sound-absorbing layer; 203. Sound insulation layer; 204. Secondary sound-absorbing layer; 205. Protective sound insulation layer; 3. Mounting plate; 4. Fixing bracket; 5. Adjustment assembly; 501. Motor; 502. Worm gear; 503. Worm wheel; 504. Lead screw; 505. Screw block; 506. First guide block; 507. First guide groove; 6. Lifting plate; 7. Disassembly assembly; 71. Connecting groove; 72. Connecting block; 73. Positioning block; 74. Sliding block; 75. Return spring; 76. Transmission rod; 77. Transmission block; 78. Pull rod; 8. Second guide groove; 9. Second guide block; 10. Base plate; 11. Shock absorber. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 5This embodiment describes a marine plate heat exchanger with a noise reduction structure, comprising a heat exchanger body 1. A mounting plate 3 is fixedly connected to the bottom end of the heat exchanger body 1. A fixing frame 4 is fixedly connected to one side of the top end of the mounting plate 3. An adjustment assembly 5 is provided on one side of the fixing frame 4. A lifting plate 6 is slidably connected to one side of the fixing frame 4 via the adjustment assembly 5. A disassembly assembly 7 is provided on one side of the lifting plate 6. A noise reduction cover 2 is connected to one side of the lifting plate 6 via the disassembly assembly 7. The noise reduction cover 2 includes a protective sound insulation layer 20. 5. The protective sound insulation layer 205 is located on the lower side of the lifting plate 6. A secondary sound absorption layer 204 is fixedly connected to the inner side of the protective sound insulation layer 205. A sound insulation barrier layer 203 is fixedly connected to the inner side of the secondary sound absorption layer 204. A porous sound absorption layer 202 is fixedly connected to the inner side of the sound insulation barrier layer 203. A damping buffer layer 201 is fixedly connected to the inner side of the porous sound absorption layer 202. The damping buffer layer 201 covers one side of the heat exchanger body 1. The damping buffer layer 201 is a butyl rubber composite steel plate and is installed on the heat exchanger body 1. The side of the heat exchange plate has a gap of ≤1mm with the heat exchange plate, which can absorb the vibration of the heat exchange plate and reduce the transmission of metal vibration to the outside. At the same time, it blocks the direct contact of medium turbulence noise with the outer structure. The porous sound-absorbing layer 202 is an open-cell foam aluminum, which is closely attached to the outside of the damping buffer layer 201. Through its internal porous structure, it absorbs mid-to-high frequency noise that passes through the damping layer. At the same time, the lightweight design does not add too much weight. The sound insulation barrier layer 203 is a galvanized steel plate sandwiched between the porous sound-absorbing layer 202 and the secondary sound-absorbing layer 204, which can block noise that is not absorbed by the sound-absorbing layer. Sound propagates outwards, and the sound insulation felt enhances the blocking effect of mid-to-low frequency noise. The secondary sound-absorbing layer 204 is centrifugal glass wool, which is closely attached to the outside of the sound insulation barrier layer 203. It can further absorb residual noise that passes through the sound insulation barrier layer 203, especially for structural resonance noise caused by ship turbulence. The protective sound insulation layer 205 is made of 304 stainless steel plate, which is the outermost part of the layered sound insulation side plate and is exposed to the external environment to resist dust and seawater splashes on the ship deck. At the same time, it serves as the last sound insulation barrier to block high-frequency noise leakage, and has the dual functions of protection and sound insulation.

[0025] refer to Figure 2-3The adjustment assembly 5 includes a motor 501, which is fixedly connected to the top of the mounting frame 4. A worm gear 502 is fixedly connected to the output end of the motor 501. A worm wheel 503 is meshed with one side of the worm gear 502. A lead screw 504 is fixedly connected to one side of the worm wheel 503. The lead screw 504 is rotatably connected inside the mounting frame 4. A screw block 505 is threaded onto the outer surface of the lead screw 504. A lifting plate 6 is fixedly connected to one side of the screw block 505. The disassembly assembly 7 is located on the lifting plate 6. By setting the adjustment assembly 5, the motor 501 drives the worm gear 502 to rotate, the worm gear 502 drives the worm wheel 503 to rotate, and the worm wheel 503 drives the lead screw 504 to rotate. This causes the screw block 505 on the surface of the lead screw 504 to slide within the mounting frame 4, thereby moving the lifting plate 6. This allows the noise reduction cover 2 to cover the heat exchanger body 1 for installation, or to be removed from the heat exchanger body 1 for subsequent disassembly.

[0026] refer to Figure 2 The fixing frame 4 has a first guide groove 507 on both sides inside. A first guide block 506 is slidably connected inside the first guide groove 507. One side of the first guide block 506 is fixedly connected to one side of the screw block 505. By setting the first guide groove 507 and the first guide block 506, the screw block 505 is prevented from rotating with the lead screw 504, ensuring that the screw block 505 always drives the lifting plate 6 to move in a straight line, and avoiding the lifting plate 6 from shifting, which would cause the noise reduction cover 2 to be misaligned with the heat exchanger body 1.

[0027] refer to Figure 4 The disassembly / assembly assembly 7 includes a docking groove 71, which is located on one side of the lifting plate 6. A docking block 72 is inserted into the docking groove 71, and one side of the docking block 72 is fixedly connected to one side of the noise reduction cover 2. A slider 74 is slidably connected inside the lifting plate 6. Positioning blocks 73 are fixedly connected to both sides of one end of the slider 74. One side of the positioning block 73 passes through the docking groove 71 and is inserted into the docking block 72. A return spring 75 is fixedly connected between the slider 74 and the inside of the lifting plate 6. The slider 74 is slidably connected inside the lifting plate 6, and a transmission rod 76 is fixedly connected to the side of the slider 74 located on the return spring 75. A transmission block 77 is fixedly connected to the side of the transmission rod 76 away from the slider 74. The transmission block 77 is slidably connected inside the lifting plate 6. A pull rod 78 is fixedly connected to the side of the transmission block 77 away from the transmission rod 76. By setting up the disassembly and assembly assembly 7, when it is necessary to disassemble the noise reduction cover 2, the pull rod 78 drives the transmission block 77 to move, the transmission block 77 drives the transmission rod 76 to move, the transmission rod 76 drives the slider 74 to move, so that the slider 74 drives the positioning block 73 to move. The positioning block 73 leaves the internal hole of the docking block 72. At this time, the docking block 72 and the docking groove 71 are no longer fixed, and the noise reduction cover 2 can be removed without professional tools. The operation is convenient and saves a lot of installation and maintenance time.

[0028] refer to Figure 4 The lifting plate 6 has a second guide groove 8 on both sides inside. A second guide block 9 is slidably connected inside the second guide groove 8. One side of the second guide block 9 is fixedly connected to one side of the transmission block 77. By setting the second guide groove 8 and the second guide block 9, when the pull rod 78 is pulled to drive the transmission block 77 to slide, the second guide block 9 on one side of the transmission block 77 slides synchronously in the second guide groove 8 on both sides inside the lifting plate 6, so that the positioning block 73 moves more stably and avoids deviation in working position.

[0029] refer to Figure 1 The bottom end of the mounting plate 3 is fixedly connected to a shock absorber 11, and there are four shock absorbers 11. The bottom end of the shock absorber 11 is fixedly connected to a base plate 10. By setting the shock absorber 11, which is composed of a damper and a shock-absorbing spring, when the ship is rocking, the shock absorber 11 absorbs the vibration energy through its own elastic deformation, reduces the vibration transmitted to the mounting plate 3 and the heat exchanger body 1, and further improves the overall noise reduction effect.

[0030] Operating principle and advantages: During equipment operation, the five-layer structure of the noise reduction cover 2 works synergistically. The damping buffer layer 201 absorbs the vibration of the heat exchange plates and blocks the turbulence noise of the medium; the porous sound-absorbing layer 202 absorbs mid-to-high frequency noise and is lightweight without adding extra weight; the sound insulation layer 203 blocks mid-to-low frequency noise; the secondary sound-absorbing layer 204 absorbs residual and structural resonance noise; and the protective sound insulation layer 205 resists dust and seawater and blocks high-frequency noise, forming a gradient noise reduction system suitable for the complex and noisy environment of ships. When maintenance or replacement of the noise reduction cover 2 is required, the motor 501 drives the worm gear 502 to rotate, which in turn drives the worm wheel 503 to rotate. 3. Drive the lead screw 504 to rotate, causing the screw block 505 on the surface of the lead screw 504 to slide within the fixed frame 4, thereby moving the lifting plate 6. The lifting plate 6 rises, causing the noise reduction cover 2 to leave the heat exchanger body 1. Then, pull the pull rod 78 of the disassembly and assembly assembly 7. The pull rod 78 drives the transmission block 77 to slide. The transmission block 77 pulls the slider 74 through the transmission rod 76, causing the positioning block 73 to be pulled out of the docking block 72, thus removing the noise reduction cover 2. The entire disassembly process is smooth and effortless. When reinstalling, the noise reduction cover 2 can be connected to the lifting plate 6 through the disassembly and assembly assembly 7. There is no need to install multiple noise reduction plates one by one, which greatly reduces the installation steps. The operation is convenient and does not require professional tools or a lot of manpower.

Claims

1. A plate heat exchanger for marine vessels with a noise reduction structure, comprising a heat exchanger body (1), characterised in that: The bottom end of the heat exchanger body (1) is fixedly connected to an installation plate (3), and a fixing frame (4) is fixedly connected to one side of the top end of the installation plate (3). An adjustment component (5) is provided on one side of the fixing frame (4), and a lifting plate (6) is slidably connected to one side of the fixing frame (4) through the adjustment component (5). A disassembly and assembly component (7) is provided on one side of the lifting plate (6), and a noise reduction cover (2) is connected to one side of the lifting plate (6) through the disassembly and assembly component (7). The noise reduction cover (2) includes a protective sound insulation layer (205), which is located on the lower side of the lifting plate (6). A secondary sound absorption layer (204) is fixedly connected to the inner side of the protective sound insulation layer (205). A sound insulation barrier layer (203) is fixedly connected to the inner side of the secondary sound absorption layer (204). A porous sound absorption layer (202) is fixedly connected to the inner side of the sound insulation barrier layer (203). A damping buffer layer (201) is fixedly connected to the inner side of the porous sound absorption layer (202). The damping buffer layer (201) covers one side of the heat exchanger body (1).

2. The plate heat exchanger with noise reduction structure for a ship according to claim 1, characterized in that: The adjustment assembly (5) includes a motor (501), which is fixedly connected to the top of the fixed frame (4). The output end of the motor (501) is fixedly connected to a worm gear (502). A worm wheel (503) is meshed with one side of the worm gear (502). A lead screw (504) is fixedly connected to one side of the worm wheel (503). The lead screw (504) is rotatably connected inside the fixed frame (4). A screw block (505) is threadedly connected to the outer surface of the lead screw (504). A lifting plate (6) is fixedly connected to one side of the screw block (505). The disassembly assembly (7) is located on the lifting plate (6).

3. The plate heat exchanger according to claim 2, characterized in that: The fixing frame (4) has a first guide groove (507) on both sides inside. A first guide block (506) is slidably connected inside the first guide groove (507). One side of the first guide block (506) is fixedly connected to one side of the screw block (505).

4. The plate heat exchanger with noise reduction structure for marine use according to claim 1, characterized in that: The disassembly and assembly assembly (7) includes a docking groove (71) which is located on one side of the lifting plate (6). A docking block (72) is inserted into the docking groove (71). One side of the docking block (72) is fixedly connected to one side of the noise reduction cover (2). A slider (74) is slidably connected inside the lifting plate (6). Positioning blocks (73) are fixedly connected to both sides of one end of the slider (74). One side of the positioning block (73) passes through the docking groove (71) and is inserted into the inside of the docking block (72). A return spring (75) is fixedly connected between the slider (74) and the inside of the lifting plate (6). The slider (74) is slidably connected inside the lifting plate (6).

5. A plate heat exchanger with noise reduction according to claim 4, characterized in that: The slider (74) is fixedly connected to a transmission rod (76) on one side of the return spring (75). The transmission rod (76) is fixedly connected to a transmission block (77) on the side away from the slider (74). The transmission block (77) is slidably connected inside the lifting plate (6). The transmission block (77) is fixedly connected to a pull rod (78) on the side away from the transmission rod (76).

6. A plate heat exchanger with noise reduction according to claim 5, characterized in that: The lifting plate (6) has a second guide groove (8) on both sides inside. A second guide block (9) is slidably connected inside the second guide groove (8). One side of the second guide block (9) is fixedly connected to one side of the transmission block (77).

7. The plate heat exchanger according to claim 1, characterized in that: The bottom end of the mounting plate (3) is fixedly connected to a shock absorber (11), and there are four shock absorbers (11). The bottom end of the shock absorber (11) is fixedly connected to a base plate (10).

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