A vibration and noise reduction device for a ship generator and its installation method

Abstract

The present invention discloses a vibration reduction and noise reduction device for a ship generator and an installation method thereof, which are applied to the technical field of vibration reduction and noise reduction equipment for generators. The present invention installs a generator set on a supporting platform inside a lower arc cover plate, then covers an upper arc cover plate on the lower arc cover plate for assembly and rotates positioning bolts to connect the upper arc cover plate and the lower arc cover plate together for sealing, then places the generator set inside a water storage tank by using a lifting mechanism, then injects water into the water storage tank, and finally offsets the vibration by repeated bouncing of a shock-absorbing plastic ball and a reset spring, and blocks noise by the water source inside the water storage tank, thereby achieving the function of improving the vibration reduction and noise reduction of the ship generator when it is working, so that while realizing the function of reducing the vibration of the ship engine set, it can also perform noise reduction processing on it, thereby improving the service life of the ship generator.

Description

Technical Field

[0001] The invention belongs to the technical field of generator vibration reduction and noise reduction equipment, and in particular relates to a ship generator vibration reduction and noise reduction device and an installation method thereof. Background Art

[0002] Mechanical vibration and noise are one of the main performance parameters of ships. Engine room power equipment is the main source of ship vibration and noise. With the rapid development of shipbuilding technology, vibration reduction and noise reduction technology has attracted more and more attention. The noise generated by the vibration of mechanical equipment on ships brings many hazards to ships and greatly reduces the performance of ships. Ship noise mainly includes three major noise sources: mechanical noise, propeller noise, and hydrodynamic noise. Among them, when the ship is working under electric propulsion, mechanical noise accounts for about 70% of the total noise radiation when sailing at low speed. These noises mainly come from the vibration of mechanical equipment in the ship. However, the vibration and noise of ship equipment have always been a difficult problem to solve. With the improvement of scientific and technological level, higher requirements are put forward for the vibration isolation and sound insulation performance of ship equipment. There are many types and quantities of power equipment in the ship engine room. Various power equipment are arranged inside the engine room according to certain requirements to realize the overall function of the engine room. Due to the different working principles of various power equipment in the engine room, there are differences in the characteristics of vibration and noise sources, and the vibration isolation measures taken for them are also different. Due to the compact layout of the engine room, the vibration and noise generated by various power equipment during operation affect each other when transmitted to the engine room, and interact with each other, forming the vibration noise of the engine room together.

[0003] At present, the Chinese invention with the publication number of CN109764079A discloses a vibration reduction and noise reduction device for a ship generator equipment system, including a mounting platform bracket placed at the bottom of the ship generator cabin, a plate body for placing the power generation equipment is arranged on the mounting platform bracket, and a vibration reduction mechanism for supporting the plate body to attenuate and absorb the exciting force generated by the power generation equipment is arranged in the mounting platform bracket. The present invention has a compact structure and is easy to install. It replaces the installation method of directly rigidly connecting the traditional ship power equipment to the hull base. By increasing the number of vibration reduction units, it can be arbitrarily expanded according to the number of actual prime movers and engines in the ship. Vibration is controlled and attenuated by multiple vibration reduction units, effectively controlling vibration and reducing noise, and the force is evenly distributed.

[0004] As we all know, the main vibration and noise source of ships is the generator room power generation equipment, that is, one or more diesel engines and generator sets that power the ship. The vibration characteristics of diesel engines are multiple vibration sources, wide frequency band, and complex shape. Existing ship engines mainly use spring dampers to be installed on the platform, and the vibration generated by the generator is buffered by the reciprocating motion of the spring force. However, the use of this spring damper cannot achieve real noise reduction by reducing vibration through spring buffering, and it cannot effectively absorb and weaken vibrations of different frequencies. At the same time, the vibration reduction effect is poor. In addition, due to the installation of a large number of shock-absorbing units at the bottom and around, the heat dissipation capacity of the ship generator is affected during operation, which will also reduce the service life of the ship generator. For this reason, we propose a ship generator vibration reduction and noise reduction device. Summary of the invention

[0005] The object of the present invention is to provide a vibration reduction and noise reduction device for a ship generator, which has the advantages of improving the vibration reduction and noise reduction effect when the ship generator is working and improving the heat dissipation capacity when the ship generator is working.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a ship generator vibration reduction and noise reduction device, including a water storage tank body, the bottom of the water storage tank body is fixedly connected with a hollow base, the bottom of the top of the inner cavity of the water storage tank body is respectively provided with an upper arc cover plate and a lower arc cover plate, the upper arc cover plate and the lower arc cover plate are both threadedly connected with positioning bolts, one side of the top and bottom of the inner cavity of the water storage tank body is respectively fixedly connected with a water injection pipe and a drainage pipe, the interior of the hollow base is provided with a lifting mechanism used in conjunction with the upper arc cover plate and the lower arc cover plate, and the top of the lifting mechanism and the interior of the lower arc cover plate are both provided with a vibration reduction mechanism used in conjunction with the generator set.

[0007] By adopting the above technical scheme, the generator set is installed on the supporting bracket inside the lower arc cover plate, and then the upper arc cover plate is assembled on the lower arc cover plate and the positioning bolts are turned to connect the upper arc cover plate and the lower arc cover plate together for sealing. Thereafter, the generator set is placed inside the water storage tank by using a lifting mechanism, and then water is injected into the water storage tank. Finally, the vibration is offset by repeated bouncing of the shock-absorbing plastic ball and the return spring, and the noise is blocked by the water source inside the water storage tank, thereby achieving the function of improving the vibration reduction and noise reduction of the ship generator during operation, so that the noise reduction can be performed on the ship engine set while realizing the function of vibration reduction, thereby improving the service life of the ship generator. By continuously using a water injection pipe to inject water into the water storage tank and releasing it through a drain pipe, circulating water is formed inside the water storage tank to ensure the temperature of the water. When the water source contacts the upper arc cover plate and the lower arc cover plate, its bottom can be transferred to the upper arc cover plate and the lower arc cover plate, and the heat inside the upper arc cover plate and the lower arc cover plate can be brought out through heat exchange, thereby cooling the generator set, thereby improving the heat dissipation capacity of the ship's generator when it is working, so that the heat can be dissipated when the ship's generator is working to reduce vibration and noise, and water cooling is used for cooling, the cooling effect is good, and the cost is relatively low.

[0008] The present invention is further configured as follows: the lifting mechanism includes a driving motor bolted to one side of the hollow base, the output end of the driving motor is fixedly mounted with a double-acting screw rotatably connected to the hollow base, both sides of the surface of the double-acting screw are threadedly connected with threaded sleeves, a lifting platform is arranged inside the water storage tank body, a first limiting sliding groove is opened on one side of the lifting platform, and a first lifting support rod and a second lifting support rod slidably connected to the first limiting sliding groove are respectively rotatably connected on one side of the surface of the threaded sleeve.

[0009] By adopting the above technical solution and installing the engine unit using a lifting mechanism, the labor intensity of manually installing the generator can be reduced while improving the installation efficiency.

[0010] The present invention is further configured as follows: the vibration reduction mechanism includes a first telescopic cylinder fixedly mounted on the top of the lifting platform and a shock-absorbing plastic ball inside the lower arc cover plate, respectively; a support bracket used in conjunction with the lower arc cover plate is provided on the top of the lifting platform; a second telescopic cylinder fixedly connected to the support bracket is slidably connected inside the first telescopic cylinder; reset springs fixedly connected to the lifting platform and the support bracket are provided inside the first telescopic cylinder and the second telescopic cylinder; and the top of the shock-absorbing plastic ball is fixedly connected to the support platform.

[0011] By adopting the above technical solution, the vibration reduction and noise reduction effects of the ship generator can be improved when the ship generator is working.

[0012] The present invention is further configured as follows: a sealing block is welded to the side where the upper arc cover plate and the lower arc cover plate are close to each other, a fitting groove for engaging with the sealing block is opened on the side where the upper arc cover plate and the lower arc cover plate are close to each other, and a first sealing gasket is also placed on the side where the upper arc cover plate and the lower arc cover plate are close to each other.

[0013] By adopting the above technical solution, the sealing block and the fitting groove fit together, which can improve the tightness of the upper arc cover plate and the lower arc cover plate when they are installed together, and prevent the water source inside the water storage tank from seeping into the interior of the upper arc cover plate and the lower arc cover plate.

[0014] The present invention is further configured as follows: the interiors of the upper arc cover plate and the lower arc cover plate are filled with heat-absorbing cotton, the top of the support platform is fixedly connected to a mounting platform used in conjunction with the generator set, the top of the upper arc cover plate is opened with an exhaust hole, and the surface of the exhaust hole is threadedly connected with a sealing cover.

[0015] By adopting the above technical solution, the heat generated by the generator set during operation can be absorbed into the interior of the upper arc cover plate and the lower arc cover plate, which is convenient for the water source to perform better heat exchange. At the same time, exhaust holes are provided to facilitate the connection of the generator to the exhaust pipe. The idle exhaust holes can be covered with sealing covers to prevent water seepage.

[0016] The present invention is further configured as follows: both sides of the inner cavity of the water storage box are welded with limiting guide rails, and both sides of the lower arc-shaped cover plate close to the limiting guide rails are welded with first limiting sliding blocks slidably connected to the limiting guide rails.

[0017] By adopting the above technical solution, when the lifting mechanism lifts the lower arc-shaped cover plate, the sliding of the lower arc-shaped cover plate can be limited to ensure stability during lifting.

[0018] The present invention is further configured as follows: a second sealing gasket used in conjunction with the lifting platform is bonded to the top of the hollow base, a heat dissipation hole used in conjunction with the drive motor is opened on one side of the hollow base, and a protective net is fixedly connected to the inside of the heat dissipation hole.

[0019] By adopting the above technical solution, the sealing performance of the lifting platform when it is lowered to the top of the hollow base can be improved, thereby preventing water from leaking into the interior of the hollow base.

[0020] The present invention is further configured as follows: a second limiting sliding groove is provided at the bottom of the inner cavity of the hollow base, and a second limiting sliding block is fixedly connected to the bottom of the threaded sliding sleeve and is slidably connected to the second limiting sliding groove.

[0021] By adopting the above technical solution, the sliding of the threaded sleeve can be limited to prevent the threaded sleeve from rotating on the surface of the double-acting screw.

[0022] The present invention is further configured as follows: a non-slip pad is bonded to the bottom of the hollow base, and a high-strength glass plate is fixedly connected to the front and back of the water storage tank body.

[0023] By adopting the above technical solution, the friction between the hollow base and the ground can be increased by the contact between the anti-slip pad and the ground, and the installation of high-strength glass plates can facilitate external observation by staff.

[0024] A method for installing a vibration and noise reduction device for a ship generator comprises the following steps:

[0025] Step 1. Unit installation: Turn on the driving motor to drive the double-acting screw to rotate, so that the threads on the surface of the double-acting screw engage with the threaded sleeve, and then drive the threaded sleeve to slide close to each other on the surface of the double-acting screw. Then, the first lifting support rod and the second lifting support rod rotate together with the threaded sleeve and the lifting platform, and slide close to each other inside the first limiting slide groove to lift the lifting platform out of the water storage tank. Then, place the lower arc cover on the top of the support platform, and install the generator set on the support platform through the installation platform. Finally, cover the upper arc cover on the lower arc cover, assemble it, and rotate the positioning bolts to connect the upper arc cover and the lower arc cover together for sealing.

[0026] Step 2. Sinking the unit: Start the driving motor again to drive the double-acting screw to rotate, so that the threads on the surface of the double-acting screw engage with the threaded sleeve and then drive the threaded sleeve to slide away from each other on the surface of the double-acting screw. Then, the first lifting support rod and the second lifting support rod rotate together with the threaded sleeve and the lifting platform and slide away from each other in the first limiting slide groove, and then the lifting platform is retracted into the water storage tank body, so that the upper arc cover plate and the lower arc cover plate can drive the generator set to be placed in the water storage tank body. Finally, the lifting platform is clamped in the second sealing gasket to seal the water storage tank body and the hollow base.

[0027] Step 3. Water injection: Use the water injection pipe to inject water into the water storage tank so that the horizontal plane completely covers the top of the upper arc cover. Then, when the generator set is working, the shock-absorbing plastic ball and the return spring are used to bounce repeatedly to offset the vibration, and the water inside the water storage tank is used to block the noise sound waves. At the same time, by continuously using the water injection pipe to inject water into the water storage tank and releasing it through the drain pipe, circulating water is formed inside the water storage tank, thereby ensuring the water temperature and cooling the generator set.

[0028] In summary, the present invention has the following beneficial effects:

[0029] The generator set is installed on the supporting platform inside the lower arc cover plate, and then the upper arc cover plate is assembled on the lower arc cover plate and the positioning bolts are turned to connect the upper arc cover plate and the lower arc cover plate together for sealing. After that, the generator set is placed inside the water storage tank by using a lifting mechanism, and then water is injected into the water storage tank. Finally, the vibration is offset by repeated bouncing of the shock-absorbing plastic ball and the return spring, and the noise is blocked by the water source inside the water storage tank, so that the vibration reduction and noise reduction functions of the ship generator are improved when the ship generator is working, so that the noise reduction can be performed on the ship engine set while the vibration reduction function is realized, thereby improving the service life of the ship generator.

[0030] By continuously using a water injection pipe to inject water into the water storage tank and releasing it through a drain pipe, circulating water is formed inside the water storage tank to ensure the temperature of the water. When the water source contacts the upper arc cover plate and the lower arc cover plate, its bottom can be transferred to the upper arc cover plate and the lower arc cover plate, and the heat inside the upper arc cover plate and the lower arc cover plate can be brought out through heat exchange, thereby cooling the generator set, thereby improving the heat dissipation capacity of the ship's generator when it is working, so that the heat can be dissipated when the ship's generator is working to reduce vibration and noise, and water cooling is used for cooling, the cooling effect is good, and the cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural cross-sectional view of the present invention;

[0033] Figure 3 It is a side sectional view of a local structure of the present invention;

[0034] Figure 4 It is a partial structural cross-sectional view of the present invention;

[0035] Figure 5 The present invention Figure 2 A in the enlarged view;

[0036] Figure 6 The present invention Figure 4 Enlarged view of point B in .

[0037] Reference numerals: 1, water storage tank; 2, hollow base; 301, driving motor; 302, double-acting screw; 303, threaded sleeve; 304, first lifting support rod; 305, second lifting support rod; 306, lifting platform; 307, first limit slide groove; 4, upper arc cover plate; 5, lower arc cover plate; 6, positioning bolt; 701, supporting platform; 702, first telescopic cylinder; 703, second telescopic cylinder; 704, reset spring; 70 5. Support platform; 706. Shock-absorbing plastic ball; 8. Water injection pipe; 9. Drain pipe; 10. Sealing block; 11. Fitting groove; 12. Heat-absorbing cotton; 13. First sealing gasket; 14. Installation platform; 15. Limiting guide rail; 16. First limiting slider; 17. Second sealing gasket; 18. Protection net; 19. Second limiting slider; 20. Second limiting slide groove; 21. Anti-slip pad; 22. High-strength glass plate; 23. Exhaust hole; 24. Sealing cover. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings. Example 1

[0039] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A vibration reduction and noise reduction device for a ship generator comprises a water storage tank 1, the bottom of the water storage tank 1 is fixedly connected with a hollow base 2, the bottom of the top of the inner cavity of the water storage tank 1 is respectively provided with an upper arc cover plate 4 and a lower arc cover plate 5, the upper arc cover plate 4 and the lower arc cover plate 5 are both threadedly connected with positioning bolts 6, one side of the top and the bottom of the inner cavity of the water storage tank 1 is respectively fixedly connected with a water injection pipe 8 and a drainage pipe 9, a lifting mechanism used in conjunction with the upper arc cover plate 4 and the lower arc cover plate 5 is provided inside the hollow base 2, and a vibration reduction mechanism used in conjunction with a generator set is provided on the top of the lifting mechanism and inside the lower arc cover plate 5, by mounting the generator set on a supporting platform inside the lower arc cover plate 5 701, and then the upper arc cover plate 4 is covered on the lower arc cover plate 5 for assembly and the positioning bolts 6 are turned to connect the upper arc cover plate 4 and the lower arc cover plate 5 together for sealing. After that, the generator set is placed inside the water storage tank 1 by using a lifting mechanism, and then water is injected into the water storage tank 1. Finally, the vibration is offset by repeated bouncing of the shock-absorbing plastic ball 706 and the return spring 704, and the noise is blocked by the water source inside the water storage tank 1, thereby achieving the function of improving the vibration reduction and noise reduction of the ship generator when it is working, so that while realizing the function of reducing the vibration of the ship engine set, it can also reduce the noise of it, thereby improving the service life of the ship generator.

[0040] refer to Figure 2 , Figure 5 The lifting mechanism includes a driving motor 301 bolted to one side of the hollow base 2, a double-acting screw 302 rotatably connected to the hollow base 2 is fixedly installed at the output end of the driving motor 301, and threaded sleeves 303 are threadedly connected to both sides of the surface of the double-acting screw 302. A lifting platform 306 is arranged inside the water storage tank 1, and a first limiting slide groove 307 is opened on one side of the lifting platform 306. A first lifting support rod 304 and a second lifting support rod 305 slidably connected to the first limiting slide groove 307 are respectively rotatably connected to one side of the surface of the threaded sleeve 303. By using the lifting mechanism to install the engine set, the labor intensity of manually installing the generator can be reduced, and the installation efficiency can be improved.

[0041] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 The vibration reduction mechanism includes a first telescopic cylinder 702 fixedly installed on the top of the lifting platform 306 and a shock-absorbing plastic ball 706 inside the lower arc cover plate 5, respectively; a supporting platform 701 used in conjunction with the lower arc cover plate 5 is arranged on the top of the lifting platform 306; a second telescopic cylinder 703 fixedly connected to the supporting platform 701 is slidably connected inside the first telescopic cylinder 702; a return spring 704 fixedly connected to the lifting platform 306 and the supporting platform 701 is arranged inside the first telescopic cylinder 702 and the second telescopic cylinder 703; a supporting platform 705 is fixedly connected to the top of the shock-absorbing plastic ball 706, which can improve the vibration reduction and noise reduction effect of the ship generator when working.

[0042] refer to Figure 3 , Figure 4 , Figure 6 A sealing block 10 is welded on one side of the upper arc cover plate 4 and the lower arc cover plate 5 where they are close to each other, and a fitting groove 11 that is engaged with the sealing block 10 is opened on one side of the upper arc cover plate 4 and the lower arc cover plate 5 where they are close to each other. A first sealing gasket 13 is also placed on one side of the upper arc cover plate 4 and the lower arc cover plate 5 where they are close to each other. By fitting the sealing block 10 and the fitting groove 11 together, the tightness of the upper arc cover plate 4 and the lower arc cover plate 5 when they are installed together can be improved, thereby preventing the water source inside the water storage tank body 1 from seeping into the interior of the upper arc cover plate 4 and the lower arc cover plate 5.

[0043] refer to Figure 1 , Figure 2 Limiting guide rails 15 are welded on both sides of the inner cavity of the water storage tank body 1, and first limiting sliders 16 slidably connected to the limiting guide rails 15 are welded on both sides of the lower arc cover plate 5 close to the limiting guide rails 15. When the lifting mechanism lifts the lower arc cover plate 5, the sliding of the lower arc cover plate 5 can be limited to ensure stability during lifting.

[0044] refer to Figure 2A second sealing gasket 17 for use with the lifting platform 306 is bonded to the top of the hollow base 2. A heat dissipation hole for use with the drive motor 301 is opened on one side of the hollow base 2. A protective net 18 is fixedly connected to the inside of the heat dissipation hole, which can improve the sealing performance when the lifting platform 306 is lowered to the top of the hollow base 2 and prevent water from leaking into the inside of the hollow base 2.

[0045] refer to Figure 2 A second limiting groove 20 is provided at the bottom of the inner cavity of the hollow base 2, and a second limiting slider 19 slidably connected to the second limiting groove 20 is fixedly connected to the bottom of the threaded sleeve 303, which can limit the sliding of the threaded sleeve 303 and prevent the threaded sleeve 303 from rotating on the surface of the double-acting screw 302.

[0046] The use process is briefly described as follows: by turning on the driving motor 301 to drive the double-acting screw 302 to rotate, the threads on the surface of the double-acting screw 302 are engaged with the threaded sleeve 303, and then the threaded sleeve 303 is driven to slide close to each other on the surface of the double-acting screw 302, and then the first lifting support rod 304 and the second lifting support rod 305 are rotated together with the threaded sleeve 303 and the lifting platform 306, and the lifting platform 306 is lifted out of the water storage tank body 1 after sliding close to each other inside the first limiting slide groove 307, and then the lower arc cover plate 5 is placed on the top of the support bracket 701, and the generator set is installed on the support platform 705 through the installation platform 14, and the upper arc cover plate 4 is covered on the lower arc cover plate 5 for assembly and the positioning bolts 6 are rotated to connect the upper arc cover plate 4 and the lower arc cover plate 5 together for sealing, and the driving motor 301 is turned on again to drive the double-acting screw 302 The lifting platform 306 is then retracted into the water storage tank 1 after the first lifting support rod 304 and the second lifting support rod 305 rotate together with the threaded sleeve 303 and the lifting platform 306 and slide away from each other inside the first limiting slide groove 307, so that the upper arc cover plate 4 and the lower arc cover plate 5 can drive the generator set to be placed inside the water storage tank 1, and finally, the lifting platform 306 is clamped inside the second sealing gasket 17 to seal the water storage tank 1 and the hollow base 2, and water is injected into the water storage tank 1, and finally, the shock-absorbing plastic ball 706 and the return spring 704 are repeatedly bounced to offset the vibration, and the noise is blocked by the water source inside the water storage tank 1. Example 2

[0047] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A vibration reduction and noise reduction device for a ship generator comprises a water storage tank 1, the bottom of the water storage tank 1 is fixedly connected with a hollow base 2, the bottom of the top of the inner cavity of the water storage tank 1 is respectively provided with an upper arc cover plate 4 and a lower arc cover plate 5, the upper arc cover plate 4 and the lower arc cover plate 5 are both threadedly connected with positioning bolts 6, one side of the top and the bottom of the inner cavity of the water storage tank 1 is respectively fixedly connected with a water injection pipe 8 and a drainage pipe 9, a lifting mechanism used in conjunction with the upper arc cover plate 4 and the lower arc cover plate 5 is provided inside the hollow base 2, and a vibration reduction mechanism used in conjunction with a generator set is provided on the top of the lifting mechanism and inside the lower arc cover plate 5, and by continuously using the injection pipe The water pipe 8 injects water into the water storage tank 1 and releases it through the drain pipe 9, so that circulating water is formed inside the water storage tank 1, thereby ensuring the temperature of the water. When the water source contacts the upper arc cover plate 4 and the lower arc cover plate 5, its bottom can be transferred to the upper arc cover plate 4 and the lower arc cover plate 5, and the heat inside the upper arc cover plate 4 and the lower arc cover plate 5 can be brought out through heat exchange, thereby cooling the generator set, thereby improving the heat dissipation capacity of the ship's generator during operation, so that the heat can be dissipated when the ship's generator is working to reduce vibration and noise, and water cooling is used for cooling, the cooling effect is good, and the cost is relatively low.

[0048] refer to Figure 3 , Figure 4 , Figure 6 The interior of the upper arc cover plate 4 and the lower arc cover plate 5 are filled with heat-absorbing cotton 12. The top of the support platform 705 is fixedly connected to the installation platform 14 used in conjunction with the generator set. The top of the upper arc cover plate 4 is opened with an exhaust hole 23. The surface of the exhaust hole 23 is threadedly connected with a sealing cover 24. The heat generated by the generator set during operation can be absorbed into the interior of the upper arc cover plate 4 and the lower arc cover plate 5, which is convenient for the water source to perform better heat exchange. At the same time, the exhaust hole 23 is arranged to facilitate the connection of the generator to the exhaust pipe. The idle exhaust hole 23 can be covered with a sealing cover 24 to avoid water seepage.

[0049] refer to Figure 1 , Figure 2 A non-slip pad 21 is bonded to the bottom of the hollow base 2, and high-strength glass plates 22 are fixedly connected to the front and back of the water storage tank 1. The non-slip pad 21 contacts the ground to increase the friction between the hollow base 2 and the ground. The high-strength glass plate 22 is installed to facilitate external observation by staff.

[0050] Brief description of the use process: water is injected into the water storage tank 1 through the water injection pipe 8 so that the water level completely covers the top of the upper arc cover plate 4. Then, when the generator set is working, water is continuously injected into the water storage tank 1 through the water injection pipe 8 and released through the drain pipe 9 to form circulating water inside the water storage tank 1, thereby ensuring the temperature of the water. When the water source contacts the upper arc cover plate 4 and the lower arc cover plate 5, its bottom can be transferred to the upper arc cover plate 4 and the lower arc cover plate 5, and the heat inside the upper arc cover plate 4 and the lower arc cover plate 5 can be brought out through heat exchange, thereby cooling the generator set.

Claims

1. A vibration and noise reduction device for a ship generator, comprising a water storage tank (1), characterized in that: The bottom of the water storage tank (1) is fixedly connected to a hollow base (2), the bottom of the top of the inner cavity of the water storage tank (1) is respectively provided with an upper arc-shaped cover plate (4) and a lower arc-shaped cover plate (5), and positioning bolts (6) are threadedly connected between the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5), and one side of the top and bottom of the inner cavity of the water storage tank (1) is respectively fixedly connected to a water injection pipe (8) and a drainage pipe (9), and a lifting mechanism used in conjunction with the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5) is provided inside the hollow base (2), and a vibration reduction mechanism used in conjunction with a generator set is provided on the top of the lifting mechanism and inside the lower arc-shaped cover plate (5); The lifting mechanism comprises a driving motor (301) bolted to one side of the inside of the hollow base (2); a double-acting screw (302) rotatably connected to the hollow base (2) is fixedly mounted on the output end of the driving motor (301); threaded sleeves (303) are threadedly connected to both sides of the surface of the double-acting screw (302); a lifting platform (306) is arranged inside the water storage tank (1); a first limiting sliding groove (307) is provided on one side of the lifting platform (306); and a first lifting support rod (304) and a second lifting support rod (305) rotatably connected to the first limiting sliding groove (307) are respectively provided on one side of the surface of the threaded sleeve (303); The vibration reduction mechanism comprises a first telescopic cylinder (702) respectively fixedly mounted on the top of the lifting platform (306) and a shock-absorbing plastic ball (706) inside the lower arc-shaped cover plate (5); a support platform (701) used in conjunction with the lower arc-shaped cover plate (5) is arranged on the top of the lifting platform (306); a second telescopic cylinder (703) fixedly connected to the support platform (701) is slidably connected inside the first telescopic cylinder (702); a return spring (704) fixedly connected to the lifting platform (306) and the support platform (701) is arranged inside the first telescopic cylinder (702) and the second telescopic cylinder (703); and the top of the shock-absorbing plastic ball (706) is fixedly connected to the support platform (705).

2. A vibration and noise reduction device for a ship generator according to claim 1, characterized in that: A sealing block (10) is welded to the side where the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5) are close to each other, a fitting groove (11) for engaging with the sealing block (10) is provided on the side where the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5) are close to each other, and a first sealing gasket (13) is also placed on the side where the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5) are close to each other.

3. A vibration and noise reduction device for a ship generator according to claim 1, characterized in that: The interiors of the upper arc-shaped cover plate (4) and the lower arc-shaped cover plate (5) are filled with heat-absorbing cotton (12); the top of the support platform (705) is fixedly connected to a mounting platform (14) used in conjunction with the generator set; the top of the upper arc-shaped cover plate (4) is provided with an exhaust hole (23); and the surface of the exhaust hole (23) is threadedly connected to a sealing cover (24).

4. A ship generator vibration reduction and noise reduction device and installation method thereof according to claim 1, characterized in that: Limiting guide rails (15) are welded to both sides of the inner cavity of the water storage tank body (1), and first limiting sliding blocks (16) slidably connected to the limiting guide rails (15) are welded to both sides of the lower arc-shaped cover plate (5) close to the limiting guide rails (15).

5. A vibration and noise reduction device for a ship generator according to claim 3, characterized in that: A second sealing gasket (17) for use with the lifting platform (306) is bonded to the top of the hollow base (2), and a heat dissipation hole for use with the drive motor (301) is provided on one side of the hollow base (2), and a protective net (18) is fixedly connected to the inside of the heat dissipation hole.

6. A vibration and noise reduction device for a ship generator according to claim 1, characterized in that: A second limiting sliding groove (20) is provided at the bottom of the inner cavity of the hollow base (2), and a second limiting sliding block (19) which is slidably connected to the second limiting sliding groove (20) is fixedly connected to the bottom of the threaded sliding sleeve (303).

7. A vibration and noise reduction device for a ship generator according to claim 1, characterized in that: An anti-slip pad (21) is bonded to the bottom of the hollow base (2), and a high-strength glass plate (22) is fixedly connected to the front and back of the water storage tank body (1).

8. A method for installing a ship generator vibration reduction and noise reduction device according to claim 5, characterized in that: The following steps are involved: Step 1. Unit installation: Turn on the drive motor (301) to drive the double-acting screw (302) to rotate, so that the threads on the surface of the double-acting screw (302) engage with the threaded sleeve (303), and then drive the threaded sleeve (303) to slide on the surface of the double-acting screw (302) close to each other, and then the first lifting support rod (304) and the second lifting support rod (305) rotate with the threaded sleeve (303) and the lifting platform (306) and at the first limit position. After the insides of the slide grooves (307) slide towards each other, the lifting platform (306) is lifted out of the water storage tank (1), and then the lower arc cover plate (5) is placed on the top of the support bracket (701), and the generator set is installed on the support platform (705) through the installation platform (14), and finally the upper arc cover plate (4) is covered on the lower arc cover plate (5) for assembly and the positioning bolts (6) are turned to connect the upper arc cover plate (4) and the lower arc cover plate (5) together for sealing; Step 2. Sinking the unit: Turn on the drive motor (301) again to drive the double-acting screw (302) to rotate, so that the threads on the surface of the double-acting screw (302) engage with the threaded sleeve (303), and then drive the threaded sleeve (303) to slide away from each other on the surface of the double-acting screw (302). Then, the first lifting support rod (304) and the second lifting support rod (305) rotate together with the threaded sleeve (303) and the lifting platform (306), and after they slide away from each other in the first limiting slide groove (307), the lifting platform (306) is retracted into the water storage tank (1), so that the upper arc cover plate (4) and the lower arc cover plate (5) can drive the generator set to be placed inside the water storage tank (1). Finally, the lifting platform (306) is clamped inside the second sealing gasket (17) to seal the space between the water storage tank (1) and the hollow base (2). Step 3. Water injection: water is injected into the water storage tank (1) through the water injection pipe (8) so that the water level completely covers the top of the upper arc cover (4). When the generator set is working, the vibration is offset by the repeated bouncing of the shock-absorbing plastic ball (706) and the return spring (704). The noise sound waves are blocked by the water source inside the water storage tank (1). At the same time, water is continuously injected into the water storage tank (1) through the water injection pipe (8) and discharged through the drain pipe (9). Circulating water is formed inside the water storage tank (1), thereby ensuring the water temperature and cooling the generator set.

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