Efficient light-weight silent diesel generating set

Abstract

The invention provides an efficient light-weight silent diesel generator set, and belongs to the technical field of diesel generators, the device comprises a base, a generator body, a cooling fan and a sound insulation cover, and further comprises a noise reduction mechanism arranged on one side of the cooling fan; wherein the noise reduction mechanism comprises a connecting pipe fixedly connected to one side of the cooling fan, two first elastic pieces are fixedly installed in the connecting pipe, and a first flow guide ring and a second flow guide ring are fixedly installed at one ends of the two first elastic pieces correspondingly; according to the efficient light-weight mute type diesel generator set, high-frequency noise is effectively reduced through the first flow guide ring, the second flow guide ring and the sound insulation grid, the first flow guide ring and the second flow guide ring are pushed by gas to move oppositely so as to reduce airflow resistance and prevent turbulent flow noise from increasing sharply, and the second shutter and the first shutter which are designed in a staggered mode are additionally arranged, so that noise is reduced, and noise is reduced. The noise reduction effect is greatly improved, and quiet and stable operation of the motor set is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of diesel generators, and particularly relates to a high-efficiency lightweight silent diesel generator set. BACKGROUND

[0002] The diesel generator set is a steel whole body composed of a diesel engine, a generator, a control screen, a public base and other components, and the low-noise diesel generator set is one of the diesel generator sets and is widely applied to power supply places with strict noise requirements such as post and telecommunications, hotels, entertainment, hospitals, schools, high-rise buildings and industrial and mining enterprises.

[0003] The patent document CN220869517U discloses an ultra-silent diesel generator set, which comprises a bottom plate, a soundproof cover, an air inlet box, an air outlet box, a diesel generator set body and a damping shock absorber. The diesel generator set body is installed on the top of the bottom plate through a mounting frame. The damping shock absorber is fixed between the diesel generator set body and the bottom plate by bolts. The soundproof cover is fixed on the top of the diesel generator set body outside the bottom plate by bolts. The air inlet box is fixed on the top of the soundproof cover by bolts. The soundproof plate is embedded in the air inlet box. The reserved groove is formed in the soundproof plate. The damping shock absorber can relieve the vibration generated by the diesel engine during operation, prevent the diesel engine from colliding with the bottom plate and the soundproof cover, avoid the generation of noise, and block the noise to a certain extent during air intake and exhaust. The noise gradually weakens when propagating in the reserved groove and the exhaust groove, so that the noise reduction efficiency is high, and the diesel generator set is suitable for wide application and promotion.

[0004] Although the above patent document reduces the noise of hot air flow through the soundproof cover and the air outlet box, when the generator works at high power, the flow rate of the hot gas discharged is too fast. When the high-speed hot gas enters the inside of the air inlet box, the high-speed gas flow characteristics are not fully considered due to the internal structure design of the air inlet box. The airflow forms a turbulent flow in the air inlet box. The airflow collides and rubs with the arc-shaped blocking blocks, the soundproof plate and other components in the air inlet box, thereby accidentally generating a large noise. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a high-efficiency lightweight silent diesel generator set, which effectively solves the problem that when the generator works at high power, the flow rate of the hot gas discharged is too fast. When the high-speed hot gas enters the inside of the air inlet box, the high-speed gas flow characteristics are not fully considered due to the internal structure design of the air inlet box. The airflow forms a turbulent flow in the air inlet box. The airflow collides and rubs with the arc-shaped blocking blocks, the soundproof plate and other components in the air inlet box, thereby accidentally generating a large noise.

[0006] To achieve the above object, the present application provides the following technical scheme: a high-efficiency lightweight mute diesel generator set, comprising a base, a generator body, a heat dissipation fan and a soundproof cover, further comprising: A noise reduction mechanism is arranged on one side of the heat dissipation fan. The noise reduction mechanism comprises a connecting pipe fixedly connected to one side of the heat dissipation fan, two elastic members I are fixedly installed inside the connecting pipe, a guide ring I and a guide ring II are fixedly installed at one end of the two elastic members I respectively, the number of the guide ring I and the guide ring II is four, and each two guide rings I and II are elastically connected through an elastic member II, a connecting ring is fixedly installed inside the guide ring I and the guide ring II, a fine groove is formed on the surface of the connecting ring, and a soundproof grid is fixedly installed on the side of the connecting pipe away from the surface of the heat dissipation fan.

[0007] As a further improvement of the present application, it further comprises: A multi-angle exhaust noise reduction assembly I is arranged on one side of the soundproof cover, the multi-angle exhaust noise reduction assembly I comprises an exhaust shell fixedly connected to one side of the soundproof cover, a louver I is rotatably connected inside the exhaust shell, a gear I is fixedly installed on one side of the louver I, a rack I is arranged on one side of the gear I, a connecting rod II is fixedly installed at the top end of the rack I, a connecting rod I is fixedly installed at the top end of the surface of the guide ring I, and the connecting rod I and the connecting rod II are fixedly connected. A multi-angle exhaust noise reduction assembly II is arranged inside the exhaust shell.

[0008] As a further improvement of the present application, the multi-angle exhaust noise reduction assembly II comprises a louver II rotatably connected inside the exhaust shell, a gear II is fixedly installed at the top end of the louver II, an elastic member III is fixedly installed on one side of the inside of the exhaust shell, a rack II engaged with the gear II is fixedly installed on one side of the elastic member III, a fixed block is fixedly installed at one end of the rack II, and an extrusion block is fixedly installed on one side of the rack I and located at the bottom end of the fixed block.

[0009] As a further improvement of the present application, it further comprises: A sealing assembly is arranged on the opposite side of the guide ring I and the guide ring II, the sealing assembly comprises a sealing groove formed at the top end of the guide ring II, and a sealing plate is fixedly installed at the bottom end of the guide ring I and located inside the sealing groove.

[0010] As a further improvement of the present application, a sealing ring is fixedly installed on the surface of the connecting rod I and located on the surface of the connecting rod I, and the connecting rod I can slide inside the sealing ring.

[0011] As a further improvement of the present application, the elastic member two is arranged between the flow guide ring one and the flow guide ring two every three, and the elastic member two and the elastic member one are internally provided with telescopic rods.

[0012] As a further improvement of the present application, the gap is arranged between the shutter one and the shutter two, and the shutter one and the shutter two are arranged on one side of the sound insulation grid.

[0013] As a further improvement of the present application, the opposite side of the fixed block and the extrusion block is designed as a slope, and the two slopes are designed in parallel, and the gap is arranged between the fixed block, the extrusion block and the shutter one.

[0014] As a further improvement of the present application, the inside of the connecting pipe is fixedly installed with the baffle on one side of the flow guide ring one and the flow guide ring two, and the surface of the baffle is fully combined with one side of the flow guide ring one and the flow guide ring two.

[0015] The application also provides a use method of the high-efficiency light-weight mute diesel generator set. S1, the operator drives the generator body to run at idle speed first, so that the oil can fully lubricate all parts, and at the same time, the instrument reading is checked to see if it is normal, and after confirming that there is no abnormality, the speed is adjusted to the rated value, so that the generator enters a stable power generation state, and in the process of power generation, the cooling fan will also start, and the internal cooling fan can cool the generator body, and the exhaust hot air flow will enter the inside of the connecting pipe. S2, when the hot air flow enters the inside of the connecting pipe, because the surface of the connecting ring is provided with a fine groove, the edge of the fine groove will generate shear force on the airflow, increase the friction and energy dissipation inside the airflow, thereby reducing the high-frequency noise, and the flow guide ring one and the flow guide ring two are arranged in a spiral shape, when the airflow reaches the multi-layer flow guide ring one, each layer of the spiral flow guide ring one and the flow guide ring two uses its unique shape to cleverly decompose the originally strong, concentrated high-speed airflow into multiple low-speed sub-airflows, each sub-airflow flows along the spiral track of the flow guide ring one and the flow guide ring two in a relatively stable and orderly manner, and the decomposition greatly changes the flow state of the airflow, effectively reduces the turbulence intensity, and reduces the noise from the source, and then the flowing hot air flow passes through the flow guide ring one and is discharged from the inside of the sound insulation grid, and the inside of the sound insulation grid is designed as a honeycomb, which can further disperse the airflow and absorb the remaining noise energy, avoiding the generation of sharp wind sound. S3, when the generator body and the heat dissipation fan are in high load operation, the airflow with excessive flow rate can contact the surface of the connecting ring, the connecting ring is conical, is arranged around the surface of the flow guide ring one and the flow guide ring two, and the airflow can impact on the conical surface of the connecting ring, the strong impact force of the airflow generates a thrust acting on the connecting ring, thereby pushing the flow guide ring one and the flow guide ring two associated with the connecting ring to move in the opposite direction, and the elastic member one is compressed during the movement of the flow guide ring one and the flow guide ring two, the airflow channel is gradually expanded by the movement of the flow guide ring one and the flow guide ring two, and the airflow resistance is reduced; S4, when the flow guide ring one moves, the connecting rod one, the connecting rod two and the rack one are driven to move upwards, the rack one drives the gear one and the louver one to rotate, and the rack one drives the extrusion block to move, the extrusion block extrudes the fixed block and the rack two to move, the rack two drives the gear two and the louver two to rotate, and since the louvers two and the louvers one are staggered and arranged at different angles, the soundproof grid discharges the gas through the louvers two and the louvers one at different angles.

[0016] Compared with the prior art, the present application has the following advantages: (1) The high-efficiency lightweight silent diesel generator set provided by the present application effectively reduces high-frequency noise by means of the flow guide ring one, the flow guide ring two and the soundproof grid, further reduces airflow resistance by moving the flow guide ring one and the flow guide ring two in opposite directions by the gas, prevents turbulent noise from increasing sharply, and further improves the noise reduction effect by the staggered design of the louvers two and the louvers one, and ensures that the generator set operates quietly and stably.

[0017] (2) The present application realizes multiple noise reduction effects by using the flow guide ring one, the flow guide ring two and the soundproof grid, utilizes the unique structure that the flow guide ring one and the flow guide ring two are arranged in a spiral shape and the gas outlet gradually increases to accurately decompose high-speed inlet airflow into multiple low-speed sub-airflows, effectively weakens the turbulence intensity, and controls noise from the source; and further disperses the airflow by means of the honeycomb design inside the soundproof grid, makes the airflow flow more smoothly, and at the same time, strongly absorbs the remaining noise energy, eliminates sharp wind noise, and specifically, after the hot gas flow enters the flow guide ring one and the flow guide ring two, the airflow is decomposed, and the soundproof grid is used to greatly improve the overall noise reduction effect.

[0018] (3) The elastic member one, the elastic member two and the connecting ring are matched, the airflow with too high flow rate pushes the connecting ring, the flow guide ring one and the flow guide ring two to move in opposite directions, in this process, the elastic member one is compressed due to extrusion, and at the same time, the movement of the flow guide ring one and the flow guide ring two gradually expands the airflow channel, effectively reduces the airflow resistance, avoids the surge of turbulent noise under high flow rate, specifically, when the generator body and the cooling fan are in high load operation, the hot airflow with too high flow rate will fully contact the surface of the connecting ring due to the tapered design of the connecting ring, thereby pushing the flow guide ring one and the flow guide ring two to move in opposite directions, thereby reducing the resistance and the generation of noise.

[0019] (4) The multi-angle exhaust noise reduction assembly one and the multi-angle exhaust noise reduction assembly two are matched, the flow guide ring one rotates the louver one, and the rack one rotates the louver two, the louver two and the louver one are staggered, when the soundproof grid exhausts gas through the louver two and the louver one with different angles, the sound wave is reflected between the layers multiple times, the sound wave energy is gradually dissipated in the reflection process, the noise intensity is effectively reduced, specifically, when the flow guide ring one moves, the connecting rod one, the connecting rod two and the rack one move upwards, the rack one drives the gear one and the louver one to rotate and open, at the same time, the extrusion block moves, the fixed block and the rack two move, finally, the gear two and the louver two rotate and open, the noise reduction effect is improved in all directions, and the generator set runs more quietly and stably. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the present application; Figure 2 is the cross-sectional soundproof cover schematic diagram of the present application; Figure 3 is the cross-sectional connecting pipe schematic diagram of the present application; Figure 4 is the flow guide ring display schematic diagram of the present application; Figure 5 is the cross-sectional flow guide ring two schematic diagram of the present application; Figure 6 is the cross-sectional exhaust shell schematic diagram of the present application; Figure 7 is the Figure 6 is the enlarged schematic diagram of A in the Figure 8 is the multi-angle exhaust noise reduction assembly display schematic diagram of the present application; Figure 9 is the enlarged schematic diagram of B in the Figure 8

[0021] ​In the figure: 100, base; 200, generator body; 300, heat dissipation fan; 400, noise reduction mechanism; 401, connecting pipe; 402, elastic piece one; 403, flow guide ring one; 404, flow guide ring two; 405, elastic piece two; 406, connecting ring; 407, sound insulation grid; 500, multi-angle exhaust noise reduction assembly one; 501, exhaust shell; 502, louver one; 503, gear one; 504, rack one; 505, connecting rod one; 506, connecting rod two; 600, multi-angle exhaust noise reduction assembly two; 601, louver two; 602, gear two; 603, elastic piece three; 604, rack two; 605, fixed block; 606, extrusion block; 700, sealing assembly; 701, sealing groove; 702, sealing plate; 800, sealing ring; 900, sound insulation cover; 1000, baffle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] It should be understood that in the description of the application, it is necessary to explain that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly.

[0025] Embodiment 1: see attached Figures 1 to 9 The high-efficiency lightweight silent diesel generator set provided in Embodiment 1 includes a base 100, a generator body 200, a heat dissipation fan 300 and a sound insulation cover 900, and further includes: The noise reduction mechanism 400 is arranged on one side of the heat dissipation fan 300. The noise reduction mechanism 400 comprises a connecting pipe 401 fixedly connected to one side of the heat dissipation fan 300, two elastic members 402 are fixedly installed inside the connecting pipe 401, one end of each of the two elastic members 402 is fixedly installed with a flow guide ring 403 and a flow guide ring 404, the number of the flow guide ring 403 and the flow guide ring 404 is four, and each two flow guide rings 403 and 404 are elastically connected through an elastic member 405, and the inside of the flow guide ring 403 and the flow guide ring 404 is fixedly installed with a connecting ring 406, and the surface of the connecting ring 406 is provided with a fine groove, and the surface of the connecting pipe 401 away from the heat dissipation fan 300 is fixedly installed with a sound insulation grid 407.

[0026] It should be noted that: the operator can drive the generator body 200 to run at idle speed first, so that the oil can fully lubricate all parts, and at the same time, check whether the instrument reading is normal, confirm that there is no abnormality, adjust the speed to the rated value, and make the generator enter the stable power generation state, and in the process of power generation, the heat dissipation fan 300 will also start, and the heat dissipation fan inside can dissipate heat for the generator body 200, and the exhaust hot gas flow will enter the inside of the connecting pipe 401; After the hot gas flow enters the inside of the connecting pipe 401, because the surface of the connecting ring 406 is provided with a fine groove, and the edge of the fine groove will generate shear force on the gas flow, so that the gas flow will generate small vortex and disturbance, thereby increasing the friction and energy dissipation inside the gas flow, thereby reducing the high-frequency noise, and the flow guide ring 403 is arranged in a spiral shape, which can decompose the high-speed inlet gas flow into multiple low-speed sub-gas flows, effectively reducing the turbulence intensity and reducing the noise from the source, and then the flowing hot gas flow will pass through the flow guide ring 403 and be discharged from the inside of the sound insulation grid 407, and the inside of the sound insulation grid 407 is designed in a honeycomb shape, thereby further dispersing the gas flow and absorbing the remaining noise energy, avoiding the generation of sharp wind sound, and when the generator body 200 and the heat dissipation fan 300 are in high load operation, because the connecting ring 406 is designed in a conical shape and surrounds the surface of the flow guide ring 403 and the flow guide ring 404, the gas flow with too high speed will contact the surface of the connecting ring 406 and push the flow guide ring 403 and the flow guide ring 404 to move in opposite directions, and when the flow guide ring 403 and the flow guide ring 404 move, the elastic member 402 will be compressed, and by moving the flow guide ring 403 and the flow guide ring 404, the gas flow channel will gradually expand, reducing the gas flow resistance and avoiding the sharp increase of turbulence noise under high flow rate.

[0027] As shown in Figure 6 , Figure 7 , Figure 8 and Figure 9 , further comprising: The multi-angle exhaust noise reduction assembly one 500 is arranged on one side of the soundproof cover 900, and the multi-angle exhaust noise reduction assembly one 500 comprises an exhaust shell 501 fixedly connected to one side of the soundproof cover 900. A louver one 502 is rotatably connected in the exhaust shell 501. A gear one 503 is fixedly installed on one side of the louver one 502. A rack one 504 is arranged on one side of the gear one 503. A connecting rod two 506 is fixedly installed at the top end of the rack one 504. A connecting rod one 505 is fixedly installed at the top end of the surface of the flow guide ring one 403, and the connecting rod one 505 is fixedly connected with the connecting rod two 506. The multi-angle exhaust noise reduction assembly two 600 is arranged in the exhaust shell 501.

[0028] As shown in Figure 6 , Figure 7 , Figure 8 and Figure 9 , the multi-angle exhaust noise reduction assembly two 600 comprises a louver two 601 rotatably connected in the exhaust shell 501. A gear two 602 is fixedly installed at the top end of the louver two 601. An elastic piece three 603 is fixedly installed on one side in the exhaust shell 501. A rack two 604 engaged with the gear two 602 is fixedly installed on one side of the elastic piece three 603. A fixed block 605 is fixedly installed at one end of the rack two 604. An extrusion block 606 located at the bottom end of the fixed block 605 is fixedly installed on one side of the rack one 504.

[0029] It should be noted that: through the design of the multi-angle exhaust noise reduction assembly one 500 and the multi-angle exhaust noise reduction assembly two 600, when the flow guide ring one 403 moves, the connecting rod one 505 and the connecting rod two 506 will be moved. The connecting rod two 506 will pull the rack one 504 to move upwards. Because the rack one 504 is engaged with the gear one 503, the moving rack one 504 will drive the gear one 503 and the louver one 502 to rotate. The rack one 504 will drive the extrusion block 606 to move, and the extrusion block 606 will extrude and push the fixed block 605 and the rack two 604 to move. When the rack two 604 moves, it will extrude the elastic piece three 603. The rack two 604 is engaged with the gear two 602, and thus the rack two 604 will drive the gear two 602 and the louver two 601 to rotate. Because the louver two 601 and the louver one 502 are staggered and arranged at different angles, when the soundproof grid 407 discharges gas, the gas will pass through the louver two 601 and the louver one 502 at different angles. The sound wave is reflected multiple times between the layers, and the energy is gradually dissipated during the reflection process, greatly improving the noise reduction effect and making the generator set run more quietly and stably.

[0030] As shown in Figure 5 , it further comprises: The sealing assembly 700 is arranged on the opposite side of the flow guide ring one 403 and the flow guide ring two 404, the sealing assembly 700 comprises a sealing groove 701 arranged on the top end of the flow guide ring two 404, and the bottom end of the flow guide ring one 403 is fixedly installed with a sealing plate 702 located in the sealing groove 701.

[0031] It should be noted that: through the design of the sealing assembly 700, when the flow guide ring one 403 and the flow guide ring two 404 move away from each other, the sealing plate 702 will slide in the sealing groove 701, thereby ensuring the sealing between the flow guide ring one 403 and the flow guide ring two 404, avoiding the gas flowing out from the gap between the flow guide ring one 403 and the flow guide ring two 404 when moving, and the sealing plate 702 and the sealing groove 701 can limit the flow guide ring one 403 and the flow guide ring two 404, avoiding the position deviation when the elastic member one 402 and the elastic member two 405 push the flow guide ring one 403 and the flow guide ring two 404 to reset.

[0032] As shown in Figure 4 and Figure 6 , the top end of the surface of the connecting pipe 401 is fixedly installed with a sealing ring 800 located on the surface of the connecting rod one 505, and the connecting rod one 505 can slide in the sealing ring 800.

[0033] It is not difficult to understand that: through the design of the sealing ring 800, when the connecting rod one 505 moves, it will slide in the sealing ring 800, and the inner wall of the sealing ring 800 and the surface of the connecting rod one 505 are fully matched, thereby increasing the sealing of the connecting pipe 401, avoiding the gas flowing out from the gap between the connecting pipe 401 and the connecting rod one 505.

[0034] As shown in Figure 4 and Figure 8 , the elastic member two 405 is arranged between the flow guide ring one 403 and the flow guide ring two 404 every three as a group, the elastic member two 405 and the elastic member one 402 are provided with telescopic rods in the inside, the louver one 502 and the louver two 601 are provided with gaps, and the louver one 502 and the louver two 601 are arranged on one side of the soundproof grid 407.

[0035] It is not difficult to understand that through the design of elastic element 2 405 and elastic element 1 402, since elastic element 2 405 is arranged in groups of three between guide ring 1 403 and guide ring 2 404, it can be ensured that each guide ring 1 403 and guide ring 2 404 can be adjusted according to the airflow speed. Furthermore, both elastic element 2 405 and elastic element 1 402 have internal telescopic rods, which can limit their movement and prevent the position of elastic element 1 402 and elastic element 2 405 from shifting when compressed. And the guide rings ( The design of 403) and the second guide ring (404) is such that the airflow can be effectively guided through the design of louver 1 502 and louver 2 601. Since there is a gap between louver 1 502 and louver 2 601, louver 2 601 will not interfere with the rotation of louver 1 502. Furthermore, louver 1 502 and louver 2 601 are both located on one side of the sound insulation grid 407. Thus, when the sound insulation grid 407 discharges hot airflow, louver 1 502 and louver 2 601 can guide the airflow to ensure the noise reduction effect.

[0036] like Figure 3 , Figure 4 and Figure 9 As shown, the fixed block 605 and the extrusion block 606 are both designed with bevels on opposite sides, and the two bevels are parallel. There is a gap between the fixed block 605 and the extrusion block 606 and the louver 502. The connecting pipe 401 is fixedly installed with a baffle 1000 located on one side of the flow guide ring 403 and the flow guide ring 404, and the surface of the baffle 1000 is fully in contact with one side of the flow guide ring 403 and the flow guide ring 404.

[0037] It is easy to understand that the design of the fixing block 605 and the pressing block 606, with their opposite sides both being beveled, reduces the resistance between them, ensuring that the pressing block 606 can stably push the fixing block 605. Furthermore, gaps are provided between the fixing block 605 and the pressing block 606 and the louver 502, ensuring the stability of the louver 502's rotation. The design of the baffle 1000 further enhances this stability. The surface of the baffle 1000 is fully in contact with one side of the first guide ring 403 and the second guide ring 404. Thus, when the hot air enters the interior of the first guide ring 403 and the second guide ring 404, the baffle 1000 can block the gap between the connecting pipe 401 and the first guide ring 403 and the second guide ring 404, preventing gas from passing through the gap between the connecting pipe 401 and the first guide ring 403 and the second guide ring 404 and affecting the noise treatment of the first guide ring 403 and the second guide ring 404.

[0038] This invention also provides a method for using a high-efficiency, lightweight, and quiet diesel generator set, which includes the following steps: S1, the operator drives the generator body 200 to run at idle speed first, so that the oil can fully lubricate all parts, and at the same time check whether the instrument readings are normal, confirm that there is no abnormal, adjust the speed to the rated value, so that the generator enters the stable power generation state, and in the process of power generation, the cooling fan 300 will also start, and the internal cooling fan can cool the generator body 200, and the exhaust hot air flow will enter the inside of the connecting pipe 401; S2, when the hot air flow enters the inside of the connecting pipe 401, because the surface of the connecting ring 406 is provided with a fine groove, and the edge of the fine groove will generate shear force on the airflow, increase the friction and energy dissipation inside the airflow, thereby reducing the high frequency noise, and the guide ring one 403 and the guide ring two 404 are arranged in a spiral shape, when the airflow reaches the multi-layer guide ring one 403, each layer of the spiral guide ring one 403 and the guide ring two 404 uses its unique shape to cleverly decompose the originally strong, concentrated high-speed airflow into multiple low-speed sub-airflows, each sub-airflow flows along the spiral track of the guide ring one 403 and the guide ring two 404 in a relatively stable and orderly manner, this decomposition greatly changes the flow state of the airflow, effectively reduces the turbulence intensity, and reduces the noise from the source, and then the flowing hot air flow will pass through the guide ring one 403 and be discharged from the inside of the soundproof grid 407, and the inside of the soundproof grid 407 is designed in a honeycomb shape, which can further disperse the airflow and absorb the remaining noise energy, avoiding the generation of sharp wind sound; S3, when the generator body 200 and the cooling fan 300 are running at high load, the airflow with too fast flow rate will contact the surface of the connecting ring 406, the connecting ring 406 is conical and arranged around the surface of the guide ring one 403 and the guide ring two 404, and the airflow will impact on the conical surface of the connecting ring 406, the strong impact force of the airflow generates a thrust acting on the connecting ring 406, thereby pushing the guide ring one 403 and the guide ring two 404 associated therewith to move in the opposite direction, and in the movement, the elastic member one 402 will be compressed, and by moving the guide ring one 403 and the guide ring two 404, the airflow channel will gradually expand, reducing the airflow resistance; S4, when the guide ring one 403 moves, it drives the connecting rod one 505, the connecting rod two 506 and the rack one 504 to move upwards, the rack one 504 drives the gear one 503 and the louver one 502 to rotate, and the rack one 504 drives the extrusion block 606 to move, the extrusion block 606 extrudes the fixed block 605 and the rack two 604 to move, the rack two 604 drives the gear two 602 and the louver two 601 to rotate, because the louver two 601 and the louver one 502 are staggered and arranged at different angles, and the soundproof grid 407 discharges gas through the louver two 601 and the louver one 502 at different angles.

[0039] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A high-efficiency, lightweight, and quiet diesel generator set, comprising a base (100), a generator body (200), a cooling fan (300), and a soundproof cover (900), characterized in that, Also includes: A noise reduction mechanism (400) is disposed on one side of a cooling fan (300); wherein, the noise reduction mechanism (400) includes a connecting pipe (401) fixedly connected to one side of the cooling fan (300), and two elastic elements (402) are fixedly installed inside the connecting pipe (401). One end of each elastic element (402) is fixedly installed with a flow guide ring (403) and a flow guide ring (404). There are four rings (404) in total, and each pair of guide rings (403) and guide rings (404) are elastically connected by elastic element (405). A connecting ring (406) is fixedly installed inside the guide rings (403) and guide rings (404), and the surface of the connecting ring (406) is provided with a fine groove. A sound insulation grid (407) is fixedly installed on the side of the connecting pipe (401) away from the surface of the cooling fan (300).

2. The high-efficiency, lightweight, and quiet diesel generator set according to claim 1, characterized in that, Also includes: A multi-angle exhaust noise reduction component (500) is disposed on one side of a soundproof cover (900). The multi-angle exhaust noise reduction component (500) includes an exhaust shell (501) fixedly connected to one side of the soundproof cover (900). A louver (502) is rotatably connected inside the exhaust shell (501). A gear (503) is fixedly installed on one side of the louver (502). A rack (504) is disposed on one side of the gear (503). A connecting rod (506) is fixedly installed at the top of the rack (504). A connecting rod (505) is fixedly installed at the top of the surface of the guide ring (403), and the connecting rod (505) is fixedly connected to the connecting rod (506). Multi-angle exhaust noise reduction component 2 (600) is located inside the exhaust housing (501).

3. The high-efficiency, lightweight, and quiet diesel generator set according to claim 2, characterized in that, The multi-angle exhaust noise reduction component 2 (600) includes a louver 2 (601) rotatably connected inside the exhaust shell (501). A gear 2 (602) is fixedly installed at the top of the louver 2 (601). An elastic element 3 (603) is fixedly installed on one side inside the exhaust shell (501). A rack 2 (604) that meshes with the gear 2 (602) is fixedly installed on one side of the elastic element 3 (603). A fixing block (605) is fixedly installed at one end of the rack 2 (604). A pressing block (606) located at the bottom end of the fixing block (605) is fixedly installed on one side of the rack 1 (504).

4. The high-efficiency, lightweight, and quiet diesel generator set according to claim 1, characterized in that, Also includes: A sealing assembly (700) is disposed on the opposite side of the first guide ring (403) and the second guide ring (404). The sealing assembly (700) includes a sealing groove (701) opened at the top of the second guide ring (404). A sealing plate (702) located inside the sealing groove (701) is fixedly installed at the bottom end of the first guide ring (403).

5. The high-efficiency, lightweight, and quiet diesel generator set according to claim 1, characterized in that, A sealing ring (800) is fixedly installed on the top of the surface of the connecting pipe (401) and located on the surface of the connecting rod (505), and the connecting rod (505) can slide inside the sealing ring (800).

6. The high-efficiency, lightweight, and quiet diesel generator set according to claim 1, characterized in that, The elastic element 2 (405) is arranged in groups of three between the flow guide ring 1 (403) and the flow guide ring 2 (404). Both the elastic element 2 (405) and the elastic element 1 (402) are provided with telescopic rods inside.

7. The high-efficiency, lightweight, and quiet diesel generator set according to claim 2, characterized in that, A gap is provided between the first louver (502) and the second louver (601), and both the first louver (502) and the second louver (601) are located on one side of the sound insulation grid (407).

8. The high-efficiency, lightweight, and quiet diesel generator set according to claim 3, characterized in that, The fixing block (605) and the pressing block (606) are both designed with inclined surfaces on opposite sides, and the two inclined surfaces are designed to be parallel. There is a gap between the fixing block (605) and the pressing block (606) and the louver (502).

9. The high-efficiency, lightweight, and quiet diesel generator set according to claim 1, characterized in that, The connecting pipe (401) is fixedly installed with a baffle (1000) located on one side of the first guide ring (403) and the second guide ring (404), and the surface of the baffle (1000) is fully in contact with one side of the first guide ring (403) and the second guide ring (404).

10. The method of using the high-efficiency, lightweight, and quiet diesel generator set according to any one of claims 1-9, characterized in that, The usage method includes the following steps; S1, the operator drives the generator body (200) to idle first, so that the oil can fully lubricate the components. At the same time, check whether the instrument readings are normal. After confirming that there are no abnormalities, adjust the speed to the rated value so that the generator enters a stable power generation state. During the power generation process, the cooling fan (300) will also start. The internal cooling fan can dissipate heat from the generator body (200), and the exhaust hot air will enter the connecting pipe (401). S2, when the hot airflow enters the connecting pipe (401), because the surface of the connecting ring (406) has fine grooves, the edges of the grooves will generate shear force on the airflow, increasing the friction and energy dissipation inside the airflow, thereby reducing high-frequency noise. In addition, the first guide ring (403) and the second guide ring (404) are arranged in a spiral shape. When the airflow reaches the multi-layer guide ring (403), each layer of spiral guide ring (403) and guide ring (404) uses its unique shape to cleverly decompose the originally strong and concentrated high-speed airflow into multiple layers. Each low-speed sub-airflow flows along the spiral trajectory of guide ring one (403) and guide ring two (404) in a relatively stable and orderly manner. This decomposition effect greatly changes the flow state of the airflow, effectively reduces the turbulence intensity, and reduces noise generation from the source. Then, the flowing hot airflow passes through guide ring one (403) and is discharged from the inside of the sound insulation grid (407). The inside of the sound insulation grid (407) is a honeycomb design, which can further disperse the airflow and absorb the remaining noise energy, thus avoiding the generation of sharp wind noise. S3, when the generator body (200) and cooling fan (300) are running under high load, the airflow with excessive speed will come into contact with the surface of the connecting ring (406). The connecting ring (406) is conical and is arranged around the surface of the first guide ring (403) and the second guide ring (404). The airflow will hit the conical surface of the connecting ring (406). The strong impact force of the airflow generates thrust, which acts on the connecting ring (406) and pushes the associated first guide ring (403) and second guide ring (404) to move in opposite directions. When they move, the first elastic element (402) will be compressed. By using the movement of the first guide ring (403) and the second guide ring (404), the airflow channel will gradually expand, reducing the airflow resistance. S4, when the guide ring 1 (403) moves, it will drive the connecting rod 1 (505), the connecting rod 2 (506) and the rack 1 (504) to move upward. The rack 1 (504) will drive the gear 1 (503) and the louver 1 (502) to rotate. The rack 1 (504) will drive the extrusion block (606) to move. The extrusion block (606) will squeeze and push the fixed block (605) and the rack 2 (604) to move. The rack 2 (604) will drive the gear 2 (602) and the louver 2 (601) to rotate. Since the louver 2 (601) and the louver 1 (502) are arranged in an alternating manner and at different angles, when the sound insulation grid (407) discharges gas, the gas will pass through the louver 2 (601) and the louver 1 (502) at different angles.

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