A diesel generator set with buffering and noise reduction function

Abstract

The present invention relates to the field of noise reduction of diesel generator sets, and discloses a diesel generator set with a buffering noise reduction function, comprising a diesel generator mechanism and a base noise reduction mechanism arranged below the diesel generator mechanism, an air intake hole noise reduction mechanism being arranged on one side of the diesel generator mechanism, the air intake hole noise reduction mechanism comprising a fixed component being arranged below one side of the diesel generator mechanism, a driving component being arranged on one side of the fixed component, a rotating component being arranged on one side of the driving component, the fixed component comprising an arc-shaped rod being arranged on one side of the diesel generator mechanism, a plurality of sliding grooves being opened on the inner side of the arc-shaped rod, and sliding blocks being slidingly arranged in the sliding grooves. According to the present invention, when water flows through staggered baffles and through holes, due to the staggered distribution of the through holes, the water flow is forced to change its flow direction multiple times and form turbulence. This process converts mechanical vibration energy into heat energy through fluid friction and kinetic energy dissipation, thereby reducing vibration noise.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction of diesel generator sets, in particular to a diesel generator set with a buffering noise reduction function. Background Art

[0002] In the patent application with application publication number CN216894586U, it includes a treatment box, one side of which is fixedly connected to an air inlet, the other side of which is fixedly connected to an exhaust port, a vibration device installed in the inner cavity of the treatment box near one end of the air inlet, a filter device installed in the inner cavity of the treatment box on one side of the vibration device, an inclined plate fixedly connected to the bottom of the inner cavity of the treatment box, a dust collection device installed on the lower part of the outer surface of the treatment box, a first baffle, a second baffle, and a third baffle fixedly connected in sequence in the inner cavity of the treatment box on one side of the filter device, and a purification device installed in the inner cavity of the treatment box near the exhaust port. This patent relates to the field of diesel generator exhaust gas treatment technology. This diesel generator exhaust gas treatment device solves the problem of traditional diesel generator exhaust gas treatment devices being inconvenient to purify and replace purification materials.

[0003] In the above-mentioned patent, some of the diesel generator base noise reduction structures have insufficient vibration absorption and poor sound wave attenuation effects. Vibration and noise cannot be effectively suppressed, which not only shortens the life of the unit, but also causes serious environmental noise pollution and affects the health of operators. Summary of the Invention

[0004] The object of the present invention is to provide a diesel generator set with buffering and noise reduction functions to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a diesel generator set with a buffering and noise reduction function, comprising a diesel generator mechanism and a base noise reduction mechanism arranged below the diesel generator mechanism, an air intake hole noise reduction mechanism is arranged on one side of the diesel generator mechanism, the air intake hole noise reduction mechanism comprises a fixed component arranged below one side of the diesel generator mechanism, a driving component is arranged on one side of the fixed component, a rotating component is arranged on one side of the driving component, the fixed component comprises an arc-shaped rod arranged on one side of the diesel generator mechanism, a plurality of sliding grooves are opened on the inner side of the arc-shaped rod, a sliding block is slidably arranged in the sliding groove, a first spring is fixedly connected between the sliding block and the sliding groove, and a triangular block is fixedly connected to one end of the sliding block away from the first spring;

[0006] The rotating assembly includes a cross rod arranged on one side of the diesel generator mechanism, each end of the cross rod is provided with a sliding groove, and a second spring is provided on one side of the four sliding grooves. A sliding rod is slidably connected in the sliding groove, and a fixing ring is fixedly connected to the other end of the sliding rod. Noise reduction cotton is fixedly provided in the fixing ring, and a triangular long rod is fixedly connected to the outside of the fixing ring.

[0007] Preferably, the diesel generator mechanism includes a diesel generator housing, and an air inlet is provided at the lower side of the diesel generator housing.

[0008] Preferably, the arc rod is fixedly connected to the lower side of the diesel generator housing, the cross rod is rotatably connected to the lower side of the diesel generator housing, and one of the noise reduction cotton positions corresponds to the air inlet.

[0009] Preferably, the drive assembly includes three connecting rods fixedly connected to the lower side of the diesel generator housing, a connecting shell fixedly connected between the three connecting rods, an exhaust pipe fixedly connected to one side of the connecting shell, and a self-locking motor fixedly arranged on the inside of the connecting shell.

[0010] Preferably, a groove is provided on one side of the connecting shell, and the groove corresponds to the positions of the four noise reduction cottons.

[0011] Preferably, the base noise reduction mechanism includes two groups of noise reduction components arranged at the lower end of the diesel generator housing, a sound absorbing component is arranged between the two groups of noise reduction components, and a water injection cover is respectively provided on one side of the two groups of noise reduction components.

[0012] Preferably, the noise reduction component includes a support leg plate fixedly connected to the lower end of the diesel generator casing, a water injection hole corresponding to the water injection cover is opened on one side of the support leg plate, the support leg plate is threadedly connected to the water injection cover through the water injection hole, a receiving groove is opened inside the support leg plate, two groups of baffles are arranged on both sides of the receiving groove, the two groups of baffles are staggered, each group of baffles is opened with multiple through holes, and the through holes on two adjacent baffles in each group are staggered.

[0013] Preferably, a plurality of V-shaped plates are provided in the containing groove, and every two adjacent V-shaped plates are symmetrically mirrored.

[0014] Preferably, the sound-absorbing component includes a connecting horizontal plate fixedly connected between the two support leg plates, a plurality of sound-absorbing holes are opened on the connecting horizontal plate, sound-absorbing cotton is arranged inside the connecting horizontal plate, the support leg plate is tightly fitted to the bottom of the diesel generator housing, and a rubber frame is arranged under the diesel generator housing, and the rubber frame arranged under the diesel generator housing corresponds to the edge of the connecting horizontal plate.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0016] (1) A noise reduction component and a sound absorption component are provided under the diesel generator housing, and an air inlet noise reduction mechanism is provided on one side of the diesel generator housing. The innovative design of the base noise reduction mechanism significantly improves the vibration suppression and noise control capabilities of the diesel generator set. The leg plate in the noise reduction component is injected with water through the water injection hole to form a liquid damping layer. When the water flows through the staggered baffles and through holes, due to the staggered distribution of the through holes, the water flow is forced to change its flow direction multiple times and form turbulence. This process converts mechanical vibration energy into heat energy through fluid friction and kinetic energy dissipation, effectively attenuating the vibration amplitude transmitted from the diesel engine to the base. The hierarchical staggered through-holes in the baffles form a sonic maze structure. When sound waves pass through different layers, they are reflected and scattered due to sudden changes in dielectric impedance (the air-water-air alternating interface). At the same time, the symmetrical mirror-image arrangement of the V-shaped plates further disrupts the sound wave propagation path, extending the sound path and enhancing the interference effect, converting sound energy into heat energy through multiple refractions. The coexistence of water and air in the tank forms a gas-liquid two-phase interface, which can both reflect some sound waves and absorb sound waves propagating in the water using the high density of water. In addition, the close fit between the rubber frame and the connecting cross plate blocks the solid sound transmission path, further reducing structure-borne noise leakage.

[0017] (2) The air inlet noise reduction mechanism is designed through the coordinated design of mechanical linkage and airflow management. When the noise reduction cotton causes the wind resistance to increase due to dust accumulation, the self-locking motor drives the cross rod to rotate 90 degrees, so that the spare noise reduction cotton is aligned with the air inlet, ensuring that the air intake efficiency is not attenuated. In this process, the fixed ring drives the triangular long rod and the triangular block on the arc rod to squeeze the oblique surface, forcing the sliding rod to compress the second spring and retract. After disengagement, the reset force of the second spring pushes the sliding rod outward, forming a high-frequency collision with the triangular block, generating mechanical vibration to shake off the dust. The exhaust pipe forms a local negative pressure area at the groove of the connecting shell, and the shaken dust is sucked into the exhaust pipe for discharge, avoiding secondary adsorption. It is suitable for high dust environments and extends the service life of the noise reduction cotton. The rotation of the four noise reduction cottons ensures that there is always a clean cotton body covering the air inlet, which can absorb broadband airflow noise and reduce pressure loss through gradual flow resistance. The air intake loss is controlled. The vibration cleaning process during the operation of the mechanism does not require shutdown, achieving the unity of noise reduction performance and maintenance convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the diesel generator housing structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the base noise reduction mechanism structure of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the noise reduction component of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the air intake noise reduction mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the combined structure of the fixed component and the rotating component of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the fixing assembly of the present invention;

[0025] Figure 8 This is a schematic structural diagram of the rotating assembly of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0027] Figure 10 This is a schematic diagram of the flipping structure of the driving assembly of the present invention.

[0028] Figure: 1. Diesel generator mechanism; 11. Diesel generator housing; 12. Air inlet; 2. Base noise reduction mechanism; 21. Noise reduction assembly; 211. Leg plate; 212. Container; 213. Baffle; 214. Through hole; 215. V-shaped plate; 216. Water injection hole; 22. Water injection cover; 23. Sound-absorbing assembly; 231. Connecting cross plate; 232. Sound-absorbing hole; 233. Sound-absorbing cotton; 3. Air inlet noise reduction mechanism; 31. Fixing assembly; 311 , arc-shaped rod; 312, sliding groove; 313, triangular block; 314, sliding block; 315, first spring; 32, rotating assembly; 321, cross rod; 322, sliding groove; 323, second spring; 324, sliding rod; 325, fixing ring; 326, noise reduction cotton; 327, triangular long rod; 33, driving assembly; 331, connecting shell; 332, connecting rod; 333, exhaust pipe; 334, self-locking motor; 335, groove. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0030] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “including” or “comprising” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] like Figures 1 to 10 As shown, the present invention provides a diesel generator set with a buffering and noise reduction function, comprising a diesel generator mechanism 1 and a base noise reduction mechanism 2 arranged below the diesel generator mechanism 1, an air intake noise reduction mechanism 3 is provided on one side of the diesel generator mechanism 1, and the air intake noise reduction mechanism 3 comprises a fixing assembly 31 arranged below one side of the diesel generator mechanism 1, a driving assembly 33 is provided on the side of the fixing assembly 31 away from the diesel generator mechanism 1, and a rotating assembly 32 is provided on the side of the driving assembly 33 facing the diesel generator mechanism 1, the fixing assembly 31 comprises an arc-shaped rod 311 arranged on one side of the diesel generator mechanism 1, a plurality of sliding grooves 312 are provided on the inner side of the arc-shaped rod 311, a sliding block 314 is slidably provided in the sliding groove 312, the sliding block 314 is fixedly connected to one side of the inner side of the sliding groove 312 with a first spring 315, and the end of the sliding block 314 away from the first spring 315 is fixedly connected to a triangular block 313;

[0032] The rotating assembly 32 includes a cross rod 321 arranged on one side of the diesel generator mechanism 1, and a sliding groove 322 is provided at each end of the cross rod 321. A second spring 323 is provided on one side of the four sliding grooves 322. A sliding rod 324 is slidably connected in the sliding groove 322, and one end of the sliding rod 324 is fixedly connected to the second spring 323. The other end of the sliding rod 324 is fixedly connected to a fixing ring 325, and noise reduction cotton 326 is fixedly provided inside the fixing ring 325. The fixing ring 325 is fixedly connected to a triangular long rod 327 on the outside of the fixing ring 325 away from the cross rod 321.

[0033] The diesel generator mechanism 1 includes a diesel generator housing 11 , and an air inlet 12 is provided at a lower side of the diesel generator housing 11 .

[0034] The arc rod 311 is fixedly connected to the lower side of the diesel generator housing 11, and the cross rod 321 is rotatably connected to the lower side of the diesel generator housing 11. The position of one of the noise reduction cottons 326 corresponds to the air inlet 12.

[0035] The drive assembly 33 includes three connecting rods 332 fixedly connected to the lower side of the diesel generator housing 11, a connecting shell 331 is fixedly connected between the three connecting rods 332, an exhaust pipe 333 is fixedly connected to one side of the connecting shell 331, a self-locking motor 334 is fixedly arranged on the inside of the connecting shell 331, and the output shaft of the self-locking motor 334 is fixedly connected to the cross rod 321.

[0036] A groove 335 is formed on one side of the connecting shell 331 , and the groove 335 corresponds to the position of the four noise reduction cottons 326 .

[0037] The base noise reduction mechanism 2 includes two groups of noise reduction components 21 arranged at the lower end of the diesel generator housing 11, a sound absorbing component 23 is arranged between the two groups of noise reduction components 21, and a water injection cover 22 is respectively provided on one side of the two groups of noise reduction components 21.

[0038] The noise reduction component 21 includes a support leg plate 211 fixedly connected to the lower end of the diesel generator housing 11, and a water injection hole 216 corresponding to the water injection cover 22 is opened on one side of the support leg plate 211. The support leg plate 211 is threadedly connected to the water injection cover 22 through the water injection hole 216. A receiving groove 212 is opened inside the support leg plate 211, and two groups of baffles 213 are arranged on both sides of the receiving groove 212. The two groups of baffles 213 are staggered. Each group of baffles 213 is provided with multiple through holes 214, and the through holes 214 on two adjacent baffles 213 in each group are staggered.

[0039] A plurality of V-shaped plates 215 are provided in the containing tank 212 , and every two adjacent V-shaped plates 215 are symmetrically mirrored. The water in the containing tank 212 is no higher than the baffle 213 and the V-shaped plate 215 .

[0040] The sound-absorbing component 23 includes a connecting horizontal plate 231 fixedly connected between the two support leg plates 211. A plurality of sound-absorbing holes 232 are opened on the connecting horizontal plate 231. Sound-absorbing cotton 233 is arranged inside the connecting horizontal plate 231. The support leg plate 211 fits tightly with the bottom of the diesel generator housing 11. A rubber frame is arranged under the diesel generator housing 11. The rubber frame arranged under the diesel generator housing 11 corresponds to the edge of the connecting horizontal plate 231.

[0041] The working principle of the present invention is as follows: during use, the vibration generated by the diesel generator housing 11 is transmitted to the leg plate 211, and the leg plate 211 is injected with water through the water injection hole 216 to form a liquid damping layer. When the water flows through the staggered baffles 213 and the through holes 214, the vibration energy is consumed by changing the flow direction and flow rate multiple times, effectively attenuating the mechanical vibration generated by the diesel generator during operation and transmitting it to the base, reducing the propagation of structure-borne noise. The V-shaped plates 215 are arranged symmetrically and mirror-imaged to further disrupt the water flow path, thereby enhancing the liquid's absorption efficiency of the vibration energy and avoiding the water flow. Resonance: The staggered through holes 214 on the baffle 213 form a sonic maze structure. When passing through the through holes at different levels, the sound waves are reflected and scattered multiple times due to impedance changes, and the sound energy is converted into heat energy and attenuated. The interface between the water and air in the container 212 can reflect part of the sound waves, while the sound waves propagating in the water are absorbed due to the difference in medium density, achieving gas and liquid dual-phase noise reduction. The vibration generated by the diesel generator housing 11 is transmitted to the connecting horizontal plate 231 and enters the interior of the connecting horizontal plate 231 through the sound-absorbing holes 232. The noise is further absorbed by the high-porosity material of the sound-absorbing cotton 233;

[0042] During the operation of the diesel generator, the noise reduction cotton 326 blocks the air inlet 12, absorbs the medium and high frequency noise generated by the intake air flow, and reduces the noise from propagating outward. When the noise reduction cotton 326 is dusted or clogged due to long-term use, the output shaft of the self-locking motor 334 drives the cross rod 321 to rotate, and the cross rod 321 drives the four fixing rings 325 to rotate, so that the noise reduction cotton 326 in the other fixing ring 325 is aligned with the air inlet 12. When the output shaft of the self-locking motor 334 drives the cross rod 321 to rotate, the cross rod 321 drives the fixing ring 325 to rotate through the sliding rod 324, and the fixing ring 325 drives the triangular long rod 327 to contact the triangular block 313. The triangular long rod 327 and the inclined surface of the triangular block 313 squeeze each other, so that the triangular long rod 327 drives the sliding rod 321 through the fixing ring 325. When the cam 328 is in the closed position, the spring 323 will automatically close the cam 329, and the spring 324 will automatically close the cam 329. When the cam 328 is in the open position, the spring 323 will automatically close the cam 329, and the spring 324 will automatically close the cam 329.

[0043] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A diesel generator set with a buffering noise reduction function, comprising a diesel generator mechanism (1) and a base noise reduction mechanism (2) arranged below the diesel generator mechanism (1), an air inlet noise reduction mechanism (3) being arranged on one side of the diesel generator mechanism (1), characterized in that: The air inlet noise reduction mechanism (3) comprises a fixed component (31) arranged below one side of the diesel generator mechanism (1), a driving component (33) being arranged on one side of the fixed component (31), a rotating component (32) being arranged on one side of the driving component (33), the fixed component (31) comprising an arc-shaped rod (311) being arranged on one side of the diesel generator mechanism (1), a plurality of sliding grooves (312) being provided on the inner side of the arc-shaped rod (311), a sliding block (314) being slidably provided in the sliding groove (312), a first spring (315) being fixedly connected between the sliding block (314) and the sliding groove (312), and a triangular block (313) being fixedly connected to one end of the sliding block (314) away from the first spring (315); The rotating assembly (32) includes a cross rod (321) arranged on one side of the diesel generator mechanism (1), each end of the cross rod (321) is provided with a sliding groove (322), one side of the inside of each of the four sliding grooves (322) is provided with a second spring (323), a sliding rod (324) is slidably connected in the sliding groove (322), the other end of the sliding rod (324) is fixedly connected to a fixing ring (325), a noise reduction cotton (326) is fixedly provided in the fixing ring (325), and a triangular long rod (327) is fixedly connected to the outside of the fixing ring (325); The diesel generator mechanism (1) comprises a diesel generator housing (11), and an air inlet hole (12) is provided at the lower side of the diesel generator housing (11); The driving assembly (33) comprises three connecting rods (332) fixedly connected to the lower side of the diesel generator housing (11); a connecting shell (331) is fixedly connected between the three connecting rods (332); an exhaust pipe (333) is fixedly connected to one side of the connecting shell (331); and a self-locking motor (334) is fixedly provided inside the connecting shell (331).

2. A diesel generator set with buffering and noise reduction function according to claim 1, characterized in that: The arc rod (311) is fixedly connected to the lower side of the diesel generator housing (11), the cross rod (321) is rotatably connected to the lower side of the diesel generator housing (11), and the position of one of the noise reduction cotton (326) corresponds to the air inlet (12).

3. A diesel generator set with buffering and noise reduction function according to claim 2, characterized in that: A groove (335) is provided on one side of the connecting shell (331), and the groove (335) corresponds to the position of the four noise reduction cottons (326).

4. The diesel generator set with buffering and noise reduction function according to claim 1, characterized in that: The base noise reduction mechanism (2) comprises two groups of noise reduction components (21) arranged at the lower end of the diesel generator housing (11), a sound absorbing component (23) is arranged between the two groups of noise reduction components (21), and a water injection cover (22) is respectively arranged on one side of the two groups of noise reduction components (21).

5. The diesel generator set with buffering and noise reduction function according to claim 4, characterized in that: The noise reduction component (21) includes a leg plate (211) fixedly connected to the lower end of the diesel generator housing (11), a water injection hole (216) corresponding to the water injection cover (22) is opened on one side of the leg plate (211), and the leg plate (211) is threadedly connected to the water injection cover (22) through the water injection hole (216), a receiving groove (212) is opened inside the leg plate (211), and two groups of baffles (213) are arranged on both sides of the receiving groove (212), the two groups of baffles (213) are staggered, and each group of baffles (213) is opened on a plurality of through holes (214), and the through holes (214) on two adjacent baffles (213) in each group are staggered.

6. The diesel generator set with buffering and noise reduction function according to claim 5, characterized in that: A plurality of V-shaped plates (215) are arranged in the containing groove (212), and every two adjacent V-shaped plates (215) are symmetrically mirrored.

7. The diesel generator set with buffering and noise reduction function according to claim 5, characterized in that: The sound-absorbing component (23) includes a connecting transverse plate (231) fixedly connected between the two supporting leg plates (211), a plurality of sound-absorbing holes (232) are provided on the connecting transverse plate (231), and sound-absorbing cotton (233) is provided inside the connecting transverse plate (231). The supporting leg plates (211) are tightly fitted with the bottom of the diesel generator housing (11), and a rubber frame is provided below the diesel generator housing (11), and the rubber frame provided below the diesel generator housing (11) corresponds to the edge of the connecting transverse plate (231).

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