A diesel generator set with a vibration and noise reduction mechanism

Abstract

The present invention relates to the technical field of diesel generators, and specifically to a diesel generator set with a shock-absorbing and noise-reduction mechanism, comprising a noise reduction protection device installed on the outside of the diesel generator, the noise reduction protection device comprising a shock-absorbing base installed on the diesel generator, a noise reduction shell installed on the shock-absorbing base, a diversion noise reduction device installed inside the noise reduction shell, the diversion noise reduction device comprising an interval diversion device installed inside the noise reduction shell, the input end of the interval diversion device being connected to the exhaust end of the diesel generator, a plurality of turbulent noise reduction mechanisms installed on the output end of the interval diversion device, the interval diversion device being used to intervally divert exhaust gas so that the discharged exhaust gas flows into each turbulent noise reduction mechanism in turn, the turbulent noise reduction mechanism being used to slow down the exhaust gas flow rate, and an exhaust filter cover being provided on the top of the noise reduction shell. The present invention can effectively improve the noise reduction effect by reducing mechanical noise and exhaust noise, while reducing the emission of particulate matter in the exhaust gas to protect the use environment.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel generators, and in particular to a diesel generator set with a vibration reduction and noise reduction mechanism. Background Art

[0002] In the energy supply sector, diesel generator sets, as a crucial backup or independent power source, are widely used in various locations requiring a stable power supply, such as hospitals, data centers, and industrial plants. With the continuous advancement of technology, user performance requirements for diesel generator sets are becoming increasingly diverse. Beyond basic power output, performance indicators such as vibration and noise reduction, and exhaust emission control are also receiving significant attention.

[0003] Chinese patent number CN115788662A discloses the technical field of shock-absorbing and noise-reducing equipment, and discloses a combined shock-absorbing and noise-reducing equipment for a diesel generator, including a housing, etc.; the housing is provided with adjustment legs around the periphery, the adjustment legs are connected to the housing via adjustment nuts, a wire conduit is provided below the housing, and wires can enter the housing through the wire conduit and connect to the diesel generator; a flip assembly is provided on the housing, and the flip assembly can flip outward to expose the generator inside the housing; a buffer mechanism is provided inside the housing, and the buffer mechanism is used to reduce vibration. It can wrap the diesel generator, and the housing and the flip assembly together form a box body, which can isolate the noise generated by the diesel generator during operation, and the buffer mechanism can reduce the vibration generated by the diesel generator during operation, thereby achieving the function of shock-absorbing and noise-reducing.

[0004] While the aforementioned device utilizes a buffer mechanism to reduce vibration and incorporates sound insulation to reduce noise, the exhaust gas continuously emitted by the diesel generator during operation still causes noise issues. When the diesel generator operates at high speed, the exhaust gas velocity increases. This rapid exhaust discharge creates strong airflow disturbances at the exhaust port, which in turn generates aerodynamic noise. This significantly increases the overall noise level of the diesel generator set, causing noise pollution to the surrounding environment, impacting the normal work of personnel and the quality of life of nearby residents.

[0005] Furthermore, diesel generator exhaust also contains unburned carbon particles. These fine particles have a large surface area and can absorb a variety of harmful substances in the air, such as heavy metals and polycyclic aromatic hydrocarbons. Directly discharging these unburned carbon particles into the surrounding air not only increases particulate matter concentration and reduces air quality, but can also damage the human respiratory and cardiovascular systems, endangering human health. Furthermore, the emission of these carbon particles can form carbon deposits around the equipment, affecting the appearance and performance of the diesel generator set and related equipment, and increasing maintenance costs. Summary of the Invention

[0006] In order to solve the above problems, a diesel generator set with a vibration reduction and noise reduction mechanism is provided. The noise reduction protection device can effectively improve the noise reduction effect and protect the use environment at the same time.

[0007] In order to solve the problems of the existing technology, the present invention provides a diesel generator set with a shock-absorbing and noise reduction mechanism, including a noise reduction protection device installed on the outside of the diesel generator, the noise reduction protection device including a shock-absorbing base installed on the diesel generator, a noise reduction shell installed on the shock-absorbing base, a diversion noise reduction device installed inside the noise reduction shell, the diversion noise reduction device including an interval diversion device installed inside the noise reduction shell, the input end of the interval diversion device is connected to the exhaust end of the diesel generator, and a plurality of turbulent noise reduction mechanisms are installed on the output end of the interval diversion device, the interval diversion device is used to interval and divert the exhaust gas so that the discharged exhaust gas flows into each turbulent noise reduction mechanism in turn, the turbulent noise reduction mechanism is used to slow down the flow rate of the exhaust gas, and an exhaust filter cover is provided on the top of the noise reduction shell.

[0008] Preferably, the interval diversion device includes an air intake body installed inside the noise reduction shell, the air intake end of the air intake body is installed with a flexible connecting pipe, the flexible connecting pipe is used to connect to the exhaust end of the diesel generator, an air storage chamber is installed inside the air intake body, a plurality of first exhaust holes are provided on the outside of the air intake body, the first exhaust holes are connected to the air storage chamber, an installation groove is also provided inside the air intake body, the installation groove is used to install the interval choke mechanism, the interval choke mechanism is used to regulate the first exhaust holes, a choke piston is slidably installed inside the air storage chamber, a sliding connecting shaft is provided on the choke piston, and the sliding connecting shaft is connected to the interval choke mechanism.

[0009] Preferably, the interval choke mechanism includes a rotating switching sleeve rotatably installed inside the mounting groove, a second exhaust hole is provided on the rotating switching sleeve, a rotating guide sleeve is installed at the axial position of the rotating switching sleeve, a plurality of V-shaped adjustment grooves connected to each other are provided inside the rotating guide sleeve, a push adjustment shaft is slidably installed at the axial position of the rotating guide sleeve, a sliding protrusion is installed on the outer side of the pushing adjustment shaft, and the sliding protrusion is slidably connected to the V-shaped adjustment groove, and the interval choke mechanism also includes a limit mounting sleeve installed on the air intake body, the limit mounting sleeve is provided on the outer side of the pushing adjustment shaft, and a reset spring is installed between the pushing adjustment shaft and the limit mounting sleeve.

[0010] Preferably, the turbulence noise reduction mechanism includes a plurality of mounting sleeves mounted on the noise reduction shell, an air inlet end of the mounting sleeve is mounted with a connecting pipe, the connecting pipe is connected to the first exhaust hole, a discharge collection port is provided at the bottom of the mounting sleeve, an exhaust port is provided at the top of the mounting sleeve, a limiting mounting frame is installed inside the mounting sleeve, a rotating adjustment sleeve is installed on the outside of the limiting mounting frame, a plurality of equally distributed fixed silencer blocks are fixedly installed inside the limiting mounting frame, a plurality of movable silencer blocks staggered with the fixed silencer blocks are also rotatably installed inside the limiting mounting frame, the movable silencer blocks are fixedly connected to the rotating adjustment sleeve, a plurality of air flow holes are provided on the movable silencer blocks and the fixed silencer blocks, and a detachable collection track is installed on the discharge collection port.

[0011] Preferably, the movable noise-absorbing baffle has the same structure as the fixed noise-absorbing baffle, an axial through hole is provided at the axial position of the movable noise-absorbing baffle, the axial through hole and the air flow hole are interconnected, and a high-temperature resistant noise-absorbing layer is provided inside the movable noise-absorbing baffle.

[0012] Preferably, the spoiler and noise reduction mechanism also includes a cleaning mechanism, which includes a pulling shaft installed inside the spoiler and noise reduction mechanism, the pulling shaft is slidingly connected to the axial through hole of the movable silencer block, and a pulling bracket is installed at one end of the pulling shaft, and a wire brush is provided on the pulling bracket.

[0013] Preferably, a supporting plate is provided above the shock-absorbing base, and a plurality of elastic buffer members are installed between the supporting plate and the shock-absorbing base.

[0014] Preferably, a vacuum sound insulation cavity and a silencer cavity are provided in the wall thickness of the noise reduction shell, the silencer cavity is provided with a plurality of silencer holes communicating with the interior of the noise reduction shell, and the inner wall of the silencer cavity is also installed with silencer cotton.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Existing diesel generator sets have relatively simple noise reduction methods, usually only using simple soundproof covers or basic shock-absorbing devices, which makes it difficult to comprehensively and effectively reduce multiple types of noise. The present invention achieves all-round, multi-level noise reduction by comprehensively utilizing multiple noise reduction methods. The shock-absorbing base, as the installation base, can effectively absorb and disperse the vibration force generated by the operation of the diesel generator, reducing the mechanical noise caused by vibration at the source. The noise reduction shell is not only made of materials with good sound insulation performance, but also has a vacuum sound insulation chamber and a silencer chamber set in the wall thickness. The silencer chamber is connected to the interior through a silencer hole. Combined with the silencer cotton on the inner wall, it can efficiently absorb the sound wave energy entering the silencer chamber. At the same time, the vacuum sound insulation chamber can effectively isolate the noise from propagating to the outside. The diversion noise reduction device is optimized for exhaust noise. The interval diversion device realizes the interval diversion and discharge of exhaust gas, avoiding the airflow disturbance caused by the rapid and concentrated discharge of exhaust gas, and reducing aerodynamic noise. The turbulent noise reduction mechanism changes the flow direction and velocity distribution of the exhaust gas, forming turbulence to increase the flow resistance, further slowing down the exhaust gas flow rate, and reducing the airflow disturbance noise. The synergistic effect of multiple noise reduction means makes the present invention significantly better than the existing technology in reducing mechanical noise and exhaust noise, creating a quieter operating environment for diesel generator sets.

[0017] 2. Most existing diesel generator sets lack effective exhaust gas purification devices, and the exhaust gas emitted contains a large amount of incompletely burned carbon particles and other particulate impurities, which not only harm the surrounding air quality and human health, but also easily form carbon deposits around the equipment, affecting the appearance and performance of the equipment and increasing maintenance costs. The noise reduction shell of the present invention is provided with an exhaust filter cover on the top. When the exhaust gas treated by the turbulence noise reduction mechanism passes through the exhaust filter cover, the particulate impurities therein will be intercepted and adsorbed by the filter material, effectively reducing the emission of particulate matter in the exhaust gas. This design not only reduces pollution to the environment and protects human health, but also avoids the formation of carbon deposits, maintains the good appearance and performance of the diesel generator set and related equipment, and extends the service life of the equipment, thereby significantly reducing the maintenance cost of the equipment, and has obvious advantages in terms of environmental protection and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a diesel generator set with a vibration reduction and noise reduction mechanism according to the present invention.

[0019] Figure 2 This is a front view of a diesel generator set with a vibration reduction and noise reduction mechanism according to the present invention.

[0020] Figure 3 yes Figure 2 Schematic diagram of the stereogram at the AA section.

[0021] Figure 4The present invention is a three-dimensional schematic diagram of a diesel generator set with a vibration-absorbing and noise-reducing mechanism, a middle partition and diversion device, and a turbulence and noise-reducing mechanism.

[0022] Figure 5 The present invention is a front view of a diesel generator set with a vibration-damping and noise-reducing mechanism, including a middle partition and diversion device and a turbulence and noise-reducing mechanism.

[0023] Figure 6 yes Figure 5 Plane sectional view at section BB.

[0024] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle.

[0025] Figure 8 It is a planar cross-sectional view of a rotating guide sleeve in a diesel generator set with a vibration reduction and noise reduction mechanism according to the present invention.

[0026] Figure 9 It is a three-dimensional schematic diagram of a movable silencer and flow control block in a diesel generator set with a vibration and noise reduction mechanism according to the present invention.

[0027] Figure 10 It is a three-dimensional schematic diagram of a cleaning mechanism in a diesel generator set with a vibration reduction and noise reduction mechanism according to the present invention.

[0028] Figure 11 It is a partial structural schematic diagram of a noise reduction housing in a diesel generator set with a vibration reduction and noise reduction mechanism according to the present invention.

[0029] The numbers in the figure are:

[0030] 1. Diesel generator; 2. Diverter and noise reduction device; 21. Interval diverter; 211. Flexible connecting pipe; 212. Intake body; 2121. First exhaust port; 213. Choke piston; 2131. Sliding connecting shaft; 214. Interval choke mechanism; 2141. Rotary switching sleeve; 2142. Second exhaust port; 2143. Rotary guide sleeve; 2144. V-shaped adjustment groove; 2145. Push adjustment shaft; 2146. Sliding bump; 2147. Position limiting mounting sleeve; 2148. Return spring; 22. Turbine and noise reduction mechanism; 221. Mounting sleeve; 221. 1. Connecting pipe; 222. Positioning mounting frame; 2221. Fixed silencer block; 223. Rotating adjustment sleeve; 2231. Movable silencer block; 2232. Air flow hole; 2233. Axial through hole; 2234. High-temperature resistant silencer layer; 224. Collecting track; 225. Cleaning mechanism; 2251. Pull-out shaft; 2252. Pull-out bracket; 2253. Wire brush; 3. Shock-absorbing base; 31. Support plate; 32. Elastic buffer; 4. Noise reduction shell; 41. Vacuum sound insulation chamber; 42. Silencing chamber; 43. Silencing hole; 44. Silencing cotton; 5. Exhaust filter cover. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figures 1 to 11 As shown, a diesel generator set with a shock-absorbing and noise-reducing mechanism includes a noise reduction protection device installed on the outside of the diesel generator 1, the noise reduction protection device includes a shock-absorbing base 3 installed on the diesel generator 1, a noise reduction shell 4 is installed on the shock-absorbing base 3, a diversion noise reduction device 2 is installed inside the noise reduction shell 4, the diversion noise reduction device 2 includes an interval diversion device 21 installed inside the noise reduction shell 4, the input end of the interval diversion device 21 is connected to the exhaust end of the diesel generator 1, and a plurality of turbulent noise reduction mechanisms 22 are installed on the output end of the interval diversion device 21, the interval diversion device 21 is used to interval and divert the exhaust gas so that the discharged exhaust gas flows into each turbulent noise reduction mechanism 22 in turn, the turbulent noise reduction mechanism 22 is used to slow down the exhaust flow rate, and an exhaust filter cover 5 is provided on the top of the noise reduction shell 4.

[0033] The shock-absorbing base 3 serves as the installation base of the diesel generator 1. When the diesel generator 1 is started and running, the vibration force generated by it is transmitted to the shock-absorbing base 3, which effectively reduces the vibration amplitude of the diesel generator 1 during operation, thereby reducing the mechanical noise generated by the vibration from the source.

[0034] The noise reduction shell 4 is mounted on the outside of the diesel generator 1. It is made of a material with good sound insulation performance, which effectively isolates and reduces the spread of noise. It works together with the shock-absorbing base 3 to further reduce the mechanical noise of the diesel generator 1.

[0035] The input end of the interval diversion device 21 is connected to the exhaust end of the diesel generator 1. When the diesel generator 1 is running and continuously discharging exhaust gas, the exhaust gas enters the interval diversion device 21. When the exhaust gas enters and applies pressure to the interval diversion device 21, when the air pressure reaches the set value, the interval diversion device 21 discharges the exhaust gas to one of the turbulence and noise reduction mechanisms 22. At this time, the turbulence and noise reduction mechanism 22 starts to work and reduces the flow rate of the incoming airflow. When a certain amount of exhaust gas is discharged and the air pressure drops to the set lower limit, the interval diversion device 21 closes the exhaust. During the next exhaust, the interval diversion device 21 transports the exhaust gas to another turbulence and noise reduction mechanism 22, and the cycle continues to achieve interval diversion and discharge of the exhaust gas. This interval diversion method can effectively avoid the concentrated and rapid discharge of exhaust gas, reduce the airflow disturbance at the exhaust port, and thus reduce aerodynamic noise.

[0036] When the exhaust gas enters the turbulence noise reduction mechanism 22, it changes the flow direction and velocity distribution of the exhaust gas, causing turbulence within the mechanism and increasing the flow resistance of the exhaust gas, thereby slowing the flow rate of the exhaust gas. This reduction in exhaust gas flow rate effectively reduces the noise generated by airflow disturbances, further reducing the exhaust noise level.

[0037] After being treated by the turbulence noise reduction mechanism 22, the exhaust gas is discharged into the exhaust filter hood 5 at the top of the noise reduction housing 4. As the exhaust gas passes through the exhaust filter hood 5, unburned carbon particles and other particulate impurities are intercepted and adsorbed by the filter material, effectively reducing the emission of particulate matter in the exhaust gas and minimizing the risk to surrounding air quality and human health. Furthermore, reducing carbon particle emissions prevents the formation of carbon deposits around the equipment, maintaining the appearance and performance of the diesel generator set 1 and related equipment, and reducing equipment maintenance costs.

[0038] In summary, the diesel generator set 1 reduces mechanical noise through the shock-absorbing base 3 and the noise reduction shell 4, uses the diversion and noise reduction device 2 to achieve interval diversion and flow rate slowdown of the exhaust gas, reduces exhaust noise, and filters particulate impurities in the exhaust gas through the exhaust filter cover 5, thereby achieving the comprehensive effect of shock absorption, noise reduction and exhaust gas purification.

[0039] See also Figures 3 to 7As shown, the interval diversion device 21 includes an air intake body 212 installed inside the noise reduction shell 4, and the air intake end of the air intake body 212 is installed with a flexible connecting pipe 211, which is used to connect to the exhaust end of the diesel generator 1. An air storage chamber is installed inside the air intake body 212, and a plurality of first exhaust holes 2121 are provided on the outside of the air intake body 212. The first exhaust holes 2121 are connected to the air storage chamber. A mounting groove is also provided inside the air intake body 212, and the mounting groove is used to install the interval blocking mechanism 214. The interval blocking mechanism 214 is used to regulate the first exhaust holes 2121. A blocking piston 213 is slidably installed inside the air storage chamber, and a sliding connecting shaft 2131 is provided on the blocking piston 213, which is connected to the interval blocking mechanism 214.

[0040] When diesel generator 1 operates and emits exhaust, the exhaust enters the air storage chamber of intake body 212 through flexible connecting pipe 211. As the amount of exhaust gas increases, the pressure within the air storage chamber rises. When the pressure reaches a set value, the pressure within the air storage chamber pushes choke piston 213 to move. Because the push-adjusting shaft 2145 is connected to the sliding connecting shaft 2131 on choke piston 213, the choke piston 213 drives the push-adjusting shaft 2145 to move synchronously.

[0041] A sliding protrusion 2146 is mounted on the outside of the push-adjustment shaft 2145. The interior of the rotation guide sleeve 2143 is provided with a plurality of interconnected V-shaped adjustment grooves 2144, with the sliding protrusion 2146 slidingly connected to the V-shaped adjustment grooves 2144. As the push-adjustment shaft 2145 moves, the sliding protrusion 2146 moves along the V-shaped adjustment grooves 2144, compressing the return spring 2148 during this process. When the sliding protrusion 2146 reaches the bottom of the V-shaped adjustment grooves 2144, it exerts a force on the rotation guide sleeve 2143, causing it to rotate the rotation switching sleeve 2141.

[0042] A second exhaust hole 2142 is provided on the rotating switching sleeve 2141, and a plurality of first exhaust holes 2121 are provided on the outside of the air intake body 212. Each first exhaust hole 2121 is connected to a turbulence and noise reduction mechanism 22. When the rotating switching sleeve 2141 rotates until the second exhaust hole 2142 overlaps with a first exhaust hole 2121 of the air intake body 212, exhaust gas in the air storage chamber can pass through the first exhaust hole 2121 and the second exhaust hole 2142 and enter the corresponding turbulence and noise reduction mechanism 22.

[0043] As exhaust gas is continuously discharged, the amount of exhaust gas inside the intake body 212 decreases, and the air pressure gradually drops. At this point, the compressed return spring 2148 releases its elastic potential energy, pushing the push-adjustment shaft 2145 back into position. As the push-adjustment shaft 2145 returns to its original position, it moves the sliding protrusion 2146 to the top of the V-shaped adjustment groove 2144. This also exerts a force on the rotating guide sleeve 2143, causing it to rotate the rotating switching sleeve 2141, causing the second exhaust hole 2142 to be offset from the first exhaust hole 2121, thereby blocking the first exhaust hole 2121 and preventing further exhaust gas discharge.

[0044] When the next exhaust gas enters the air storage chamber and the air pressure reaches the set value again, the choke piston 213 is pushed and moved again, thereby driving the push adjustment shaft 2145 to move. The above process repeats: the sliding protrusion 2146 moves within the V-shaped adjustment groove 2144, and the rotating guide sleeve 2143 drives the rotation of the switching sleeve 2141. This causes the second exhaust hole 2142 to overlap with the other first exhaust hole 2121 and open, allowing the exhaust gas to enter the new turbulence and noise reduction mechanism 22. The subsequent exhaust process repeats these steps, achieving intermittent diversion and discharge of the exhaust gas, effectively avoiding the rapid and concentrated exhaust gas discharge, reducing airflow disturbances at the exhaust port, and lowering aerodynamic noise.

[0045] See also Figures 3 to 8 As shown, the interval blocking mechanism 214 includes a rotating switching sleeve 2141 rotatably installed inside the mounting groove, a second exhaust hole 2142 is provided on the rotating switching sleeve 2141, a rotating guide sleeve 2143 is installed at the axial position of the rotating switching sleeve 2141, and a plurality of V-shaped adjustment grooves 2144 are provided inside the rotating guide sleeve 2143. A push adjustment shaft 2145 is slidably installed at the axial position of the rotating guide sleeve 2143, and a sliding protrusion 2146 is installed on the outer side of the pushing adjustment shaft 2145. The sliding protrusion 2146 is slidably connected to the V-shaped adjustment groove 2144. The interval blocking mechanism 214 also includes a limiting mounting sleeve 2147 installed on the air intake body 212, the limiting mounting sleeve 2147 is sleeved on the outer side of the pushing adjustment shaft 2145, and a return spring 2148 is installed between the pushing adjustment shaft 2145 and the limiting mounting sleeve 2147.

[0046] When diesel generator 1 operates and emits exhaust, the exhaust enters the air storage chamber of intake body 212 through flexible connecting pipe 211. As the amount of exhaust gas increases, the pressure within the air storage chamber rises. When the pressure reaches a set value, the pressure within the air storage chamber pushes choke piston 213 to move. Because the push-adjusting shaft 2145 is connected to the sliding connecting shaft 2131 on choke piston 213, the choke piston 213 drives the push-adjusting shaft 2145 to move synchronously.

[0047] A sliding protrusion 2146 is mounted on the outside of the push-adjustment shaft 2145. The interior of the rotation guide sleeve 2143 is provided with a plurality of interconnected V-shaped adjustment grooves 2144, with the sliding protrusion 2146 slidingly connected to the V-shaped adjustment grooves 2144. As the push-adjustment shaft 2145 moves, the sliding protrusion 2146 moves along the V-shaped adjustment grooves 2144, compressing the return spring 2148 during this process. When the sliding protrusion 2146 reaches the bottom of the V-shaped adjustment grooves 2144, it exerts a force on the rotation guide sleeve 2143, causing it to rotate the rotation switching sleeve 2141.

[0048] A second exhaust hole 2142 is provided on the rotating switching sleeve 2141, and a plurality of first exhaust holes 2121 are provided on the outside of the air intake body 212. Each first exhaust hole 2121 is connected to a turbulence and noise reduction mechanism 22. When the rotating switching sleeve 2141 rotates until the second exhaust hole 2142 overlaps with a first exhaust hole 2121 of the air intake body 212, exhaust gas in the air storage chamber can pass through the first exhaust hole 2121 and the second exhaust hole 2142 and enter the corresponding turbulence and noise reduction mechanism 22.

[0049] As exhaust gas is continuously discharged, the amount of exhaust gas inside the intake body 212 decreases, and the air pressure gradually drops. At this point, the compressed return spring 2148 releases its elastic potential energy, pushing the push-adjustment shaft 2145 back into position. As the push-adjustment shaft 2145 returns to its original position, it moves the sliding protrusion 2146 to the top of the V-shaped adjustment groove 2144. This also exerts a force on the rotating guide sleeve 2143, causing it to rotate the rotating switching sleeve 2141, causing the second exhaust hole 2142 to be offset from the first exhaust hole 2121, thereby blocking the first exhaust hole 2121 and preventing further exhaust gas discharge.

[0050] When the next exhaust gas enters the air storage chamber and the air pressure reaches the set value again, the choke piston 213 is pushed and moved again, thereby driving the push adjustment shaft 2145 to move. The above process repeats: the sliding protrusion 2146 moves within the V-shaped adjustment groove 2144, and the rotating guide sleeve 2143 drives the rotation of the switching sleeve 2141. This causes the second exhaust hole 2142 to overlap with the other first exhaust hole 2121 and open, allowing the exhaust gas to enter the new turbulence and noise reduction mechanism 22. The subsequent exhaust process repeats these steps, achieving intermittent diversion and discharge of the exhaust gas, effectively avoiding the rapid and concentrated exhaust gas discharge, reducing airflow disturbances at the exhaust port, and lowering aerodynamic noise.

[0051] See also Figures 3 to 6As shown, the turbulence noise reduction mechanism 22 includes a plurality of mounting sleeves 221 mounted on the noise reduction housing 4, the air inlet end of the mounting sleeve 221 is mounted with a connecting pipe 2211, the connecting pipe 2211 is connected to the first exhaust hole 2121, the bottom of the mounting sleeve 221 is provided with a discharge collection port, the top of the mounting sleeve 221 is provided with an exhaust port, the interior of the mounting sleeve 221 is mounted with a limited mounting frame 222, the outer side of the limited mounting frame 222 is mounted with a rotation adjustment sleeve 223, the limited mounting frame 221 is provided with a rotation adjustment sleeve 223, and the limited mounting frame 221 is provided with a rotation adjustment sleeve 223. 22 is fixedly installed with a plurality of equally distributed fixed silencer blocks 2221 inside, and a plurality of movable silencer blocks 2231 that are staggered with the fixed silencer blocks 2221 are also rotatably installed inside the limiting mounting frame 222. The movable silencer blocks 2231 are fixedly connected to the rotating adjustment sleeve 223. A plurality of air flow holes 2232 are provided on the movable silencer blocks 2231 and the fixed silencer blocks 2221, and a detachable collection track 224 is installed on the discharge collection port.

[0052] Under normal operating conditions, the movable noise-reducing block 2231 is rotated by rotating the adjustment sleeve 223, so that the airflow holes 2232 on the movable noise-reducing block 2231 and the fixed noise-reducing block 2221 are staggered. When the exhaust gas flows through these staggered noise-reducing blocks with staggered airflow holes 2232, the flow path of the exhaust gas is obstructed, and the airflow is divided into multiple small airflows. At the same time, the direction of the airflow constantly changes, forming turbulence. This turbulent state increases the flow resistance of the exhaust gas, thereby effectively slowing down the flow rate of the exhaust gas. The reduction in the exhaust gas flow rate can significantly reduce the noise generated by airflow disturbances, thereby reducing the exhaust noise level.

[0053] When the airflow holes 2232 need to be regularly cleared and cleaned, the operator adjusts the position of the movable noise-reducing block 2231 by rotating the adjustment sleeve 223, so that the movable noise-reducing block 2231 and the airflow holes 2232 on the fixed noise-reducing block 2221 are kept in the same position. At this time, the airflow holes 2232 form an unobstructed passage, making it easy for the operator to use tools to clear and clean impurities such as particles and dust accumulated in the airflow holes 2232.

[0054] During the cleaning process, particles, dust, and other impurities that fall to the bottom of mounting sleeve 221 fall into collection track 224. Collection track 224 is mounted on the discharge collection port and slides into the port, making it easy for workers to disassemble and clean. This ensures the cleanliness of the interior of mounting sleeve 221 while preventing particles, dust, and other impurities from adversely affecting the flow of exhaust gas and the silencing effect.

[0055] The exhaust gas processed by the turbulence noise reduction mechanism 22 has its flow velocity effectively reduced, the airflow becomes more uniform, and is finally discharged from the exhaust port at the top of the mounting sleeve 221, thereby achieving the purpose of reducing exhaust noise.

[0056] See also Figures 6 to 9 As shown, the movable noise-absorbing baffle 2231 has the same structure as the fixed noise-absorbing baffle 2221. An axial through hole 2233 is provided at the axial position of the movable noise-absorbing baffle 2231. The axial through hole 2233 and the air flow hole 2232 are interconnected. A high-temperature resistant noise-absorbing layer 2234 is provided inside the movable noise-absorbing baffle 2231.

[0057] Under normal working conditions, the movable silencer baffle 2231 is driven to rotate by rotating the adjustment sleeve 223, so that the airflow holes 2232 on the movable silencer baffle 2231 and the fixed silencer baffle 2221 are staggered with each other. When the exhaust gas enters the mounting sleeve 221 from the connecting pipe 2211 and flows through these staggered silencer baffles with staggered airflow holes 2232, the flow path of the exhaust gas is obstructed. The originally continuous exhaust gas flow is divided into multiple small airflows, and the direction of the airflow is constantly changing, forming a turbulent state. This turbulent state increases the flow resistance of the exhaust gas and effectively slows down the flow rate of the exhaust gas. The reduction in the exhaust gas flow rate can significantly reduce the noise generated by airflow disturbances, thereby reducing the exhaust noise level.

[0058] A high-temperature resistant sound-absorbing layer 2234 is provided inside the movable sound-absorbing baffle 2231. When the exhaust gas passes through the movable sound-absorbing baffle 2231 and the fixed sound-absorbing baffle 2221, the high-temperature resistant sound-absorbing layer 2234 can further absorb and attenuate the sound energy in the airflow, effectively reducing the noise during the discharge of the airflow and enhancing the overall noise reduction effect.

[0059] When the airflow holes 2232 need to be regularly cleared and cleaned, the operator adjusts the position of the movable noise-reducing block 2231 by rotating the adjustment sleeve 223, so that the movable noise-reducing block 2231 and the airflow holes 2232 on the fixed noise-reducing block 2221 are kept in the same position. At this time, the airflow holes 2232 form an unobstructed passage, making it easy for the operator to use tools to clear and clean impurities such as particles and dust accumulated in the airflow holes 2232.

[0060] The movable muffler block 2231 is provided with an axial through-hole 2233 at its axial center, which is interconnected with the airflow holes 2232. During the cleaning process, a worker can insert a cleaning tool into the axial through-hole 2233 to quickly reach each airflow hole 2232 and efficiently clean the accumulated particles, dust, and other impurities in the airflow holes 2232, thereby reducing maintenance difficulty. During the cleaning process, particles, dust, and other impurities that fall to the bottom of the mounting sleeve 221 will fall into the collection track 224. The collection track 224 is mounted on the discharge collection port and is slidably engaged with the discharge collection port, making it easy for workers to disassemble and clean it, ensuring the cleanliness of the interior of the mounting sleeve 221 and preventing particles, dust, and other impurities from adversely affecting the exhaust gas flow and muffler effect.

[0061] See also Figures 6 to 10As shown, the turbulence and noise reduction mechanism 22 also includes a cleaning mechanism 225, which includes a pulling shaft 2251 installed inside the turbulence and noise reduction mechanism 22, and the pulling shaft 2251 is slidably connected to the axial through hole 2233 of the movable silencer block 2231. A pulling bracket 2252 is installed at one end of the pulling shaft 2251, and a wire brush 2253 is provided on the pulling bracket 2252.

[0062] When cleaning the airflow holes 2232 on the movable muffler block 2231 and the fixed muffler block 2221, the operator first opens the exhaust filter cover 5 to provide operating space and ensure the smooth discharge of impurities during the cleaning process. Next, the position of the movable muffler block 2231 is adjusted by rotating the adjustment sleeve 223, so that the airflow holes 2232 on the movable muffler block 2231 and the fixed muffler block 2221 remain in the same position. At this point, the airflow holes 2232 form an unobstructed passage, creating conditions for subsequent cleaning and the removal of impurities.

[0063] The pull-out shaft 2251 is slidably connected to the axial through hole 2233 of the movable silencer block 2231. The staff pulls the pull-out shaft 2251 to make it telescopically move in the axial through hole 2233. Since a pull-out bracket 2252 is installed at one end of the pull-out shaft 2251, and a wire brush 2253 is provided on the pull-out bracket 2252, the movement of the pull-out shaft 2251 will synchronously drive the pull-out bracket 2252 and the wire brush 2253 to move. During the movement, the wire brush 2253 will contact the inner wall of the airflow hole 2232 and generate relative friction, thereby scraping and cleaning impurities such as particulate dust accumulated on the inner wall of the airflow hole 2232, thereby achieving rapid dredging and maintenance of the airflow hole 2232.

[0064] During the cleaning process, impurities such as dust particles removed by the wire brush 2253 will fall to the bottom of the mounting sleeve 221. A discharge collection port is provided at the bottom of the mounting sleeve 221, on which a detachable collection track 224 is mounted, and the collection track 224 is slidably engaged with the discharge collection port. Falling impurities will fall into the collection track 224, which can be easily removed and cleaned by staff, ensuring the cleanliness of the interior of the mounting sleeve 221. This cleaning method avoids the accumulation of impurities such as dust particles within the mounting sleeve 221, preventing them from adversely affecting the exhaust gas flow and silencing effect, thereby ensuring the normal operation and noise reduction effect of the turbulence noise reduction mechanism 22.

[0065] See also Figures 1 to 3 As shown, a supporting plate 31 is provided above the shock-absorbing base 3 , and a plurality of elastic buffer members 32 are installed between the supporting plate 31 and the shock-absorbing base 3 .

[0066] When the diesel generator 1 is started and running, the operation of the internal mechanical components will generate vibration forces. These vibration forces are first transmitted to the support plate 31 fixedly connected thereto, causing the support plate 31 to have a vibration tendency. At this time, the multiple elastic buffers 32 between the support plate 31 and the shock-absorbing base 3 begin to play a role. The elastic buffer 32 has elastic properties and will undergo elastic deformation when subjected to the vibration pressure transmitted by the support plate 31. This elastic deformation can absorb and disperse part of the vibration force, converting the vibration energy into elastic potential energy, thereby effectively reducing the vibration amplitude of the support plate 31. This reduces the mechanical noise caused by vibration at the source.

[0067] See also Figure 3 and Figure 11 As shown, a vacuum sound insulation cavity 41 and a silencer cavity 42 are provided in the wall thickness of the noise reduction shell 4. The silencer cavity 42 is provided with a number of silencer holes 43 connected to the interior of the noise reduction shell 4. The inner wall of the silencer cavity 42 is also installed with silencer cotton 44.

[0068] When diesel generator 1 is started and running, the high-speed operation and vibration of its internal mechanical components generate mechanical noise, which propagates through the air in the form of sound waves. These sound waves enter the silencer cavity 42 through the silencer holes 43. Once inside, they interact with the porous structure of the silencer cotton 44. This porous structure causes the sound waves to continuously reflect, refract, and scatter during propagation, gradually dissipating and attenuating the sound energy, thereby reducing noise.

[0069] In addition to absorbing some noise through the silencing cavity 42 and the muffler 44, the vacuum soundproof cavity 41 within the wall of the noise-reduction housing 4 also provides insulation. Because there's virtually no medium to propagate sound waves in a vacuum environment, when noise attempts to propagate outward through the noise-reduction housing 4, the vacuum soundproof cavity 41 effectively blocks the transmission of sound waves, isolating most of the noise within the housing 4 and preventing it from spreading to the outside environment.

[0070] By absorbing and attenuating the noise entering the silencer chamber 42 and the muffler cotton 44, and isolating the noise transmission by the vacuum soundproof chamber 41, the noise-reducing housing 4 significantly reduces the mechanical noise generated by the diesel generator 1. This dual noise reduction mechanism works together to effectively reduce noise pollution to the surrounding environment, creating a relatively quiet operating environment for the diesel generator 1 and reducing the impact of noise on operators and surrounding residents.

[0071] Specific working principle:

[0072] When diesel generator 1 operates and emits exhaust, the exhaust enters the air storage chamber of intake body 212 through flexible connecting pipe 211. As the amount of exhaust gas increases, the pressure within the air storage chamber rises. When the pressure reaches a set value, the pressure within the air storage chamber pushes choke piston 213 to move. Because the push-adjusting shaft 2145 is connected to the sliding connecting shaft 2131 on choke piston 213, the choke piston 213 drives the push-adjusting shaft 2145 to move synchronously.

[0073] A sliding protrusion 2146 is mounted on the outside of the push-adjustment shaft 2145. The interior of the rotation guide sleeve 2143 is provided with a plurality of interconnected V-shaped adjustment grooves 2144, with the sliding protrusion 2146 slidingly connected to the V-shaped adjustment grooves 2144. As the push-adjustment shaft 2145 moves, the sliding protrusion 2146 moves along the V-shaped adjustment grooves 2144, compressing the return spring 2148 during this process. When the sliding protrusion 2146 reaches the bottom of the V-shaped adjustment grooves 2144, it exerts a force on the rotation guide sleeve 2143, causing it to rotate the rotation switching sleeve 2141.

[0074] A second exhaust hole 2142 is provided on the rotating switching sleeve 2141, and a plurality of first exhaust holes 2121 are provided on the outside of the air intake body 212. Each first exhaust hole 2121 is connected to a turbulence and noise reduction mechanism 22. When the rotating switching sleeve 2141 rotates until the second exhaust hole 2142 overlaps with a first exhaust hole 2121 of the air intake body 212, exhaust gas in the air storage chamber can pass through the first exhaust hole 2121 and the second exhaust hole 2142 and enter the corresponding turbulence and noise reduction mechanism 22.

[0075] As exhaust gas is continuously discharged, the amount of exhaust gas inside the intake body 212 decreases, and the air pressure gradually drops. At this point, the compressed return spring 2148 releases its elastic potential energy, pushing the push-adjustment shaft 2145 back into position. As the push-adjustment shaft 2145 returns to its original position, it moves the sliding protrusion 2146 to the top of the V-shaped adjustment groove 2144. This also exerts a force on the rotating guide sleeve 2143, causing it to rotate the rotating switching sleeve 2141, causing the second exhaust hole 2142 to be offset from the first exhaust hole 2121, thereby blocking the first exhaust hole 2121 and preventing further exhaust gas discharge.

[0076] When the next exhaust gas enters the air storage chamber and the air pressure reaches the set value again, the choke piston 213 is pushed and moved again, thereby driving the push adjustment shaft 2145 to move. The above process repeats: the sliding protrusion 2146 moves within the V-shaped adjustment groove 2144, and the rotating guide sleeve 2143 drives the rotation of the switching sleeve 2141. This causes the second exhaust hole 2142 to overlap with the other first exhaust hole 2121 and open, allowing the exhaust gas to enter the new turbulence and noise reduction mechanism 22. The subsequent exhaust process repeats these steps, achieving intermittent diversion and discharge of the exhaust gas, effectively avoiding the rapid and concentrated exhaust gas discharge, reducing airflow disturbances at the exhaust port, and lowering aerodynamic noise.

[0077] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A diesel generator set with a vibration reduction and noise reduction mechanism, comprising a noise reduction protection device installed on the outside of the diesel generator (1), characterized in that: The noise reduction protection device comprises a shock-absorbing base (3) mounted on the diesel generator (1), a noise reduction housing (4) mounted on the shock-absorbing base (3), a diversion noise reduction device (2) mounted inside the noise reduction housing (4), the diversion noise reduction device (2) comprising an interval diversion device (21) mounted inside the noise reduction housing (4), an input end of the interval diversion device (21) connected to an exhaust end of the diesel generator (1), a plurality of turbulent noise reduction mechanisms (22) mounted on an output end of the interval diversion device (21), the interval diversion device (21) being used to interval divert exhaust gas so that the exhausted exhaust gas flows into each turbulent noise reduction mechanism (22) in sequence, the turbulent noise reduction mechanism (22) being used to slow down the exhaust gas flow rate, and an exhaust filter cover (5) being provided on the top of the noise reduction housing (4); The interval flow diversion device (21) comprises an air intake body (212) installed inside the noise reduction housing (4); a flexible connecting pipe (211) is installed at the air intake end of the air intake body (212); the flexible connecting pipe (211) is used to connect to the exhaust end of the diesel generator (1); an air storage chamber is installed inside the air intake body (212); a plurality of first exhaust holes (2121) are provided on the outside of the air intake body (212); the first exhaust holes (2121) are communicated with the air storage chamber; a mounting groove is further provided inside the air intake body (212); the mounting groove is used to install an interval flow blocking mechanism (214); the interval flow blocking mechanism (214) is used to regulate the first exhaust holes (2121); a flow blocking piston (213) is slidably installed inside the air storage chamber; a sliding connecting shaft (2131) is provided on the flow blocking piston (213); the sliding connecting shaft (2131) is connected to the interval flow blocking mechanism (214); The interval flow blocking mechanism (214) comprises a rotating switching sleeve (2141) rotatably mounted inside the mounting groove, a second exhaust hole (2142) being provided on the rotating switching sleeve (2141), a rotating guide sleeve (2143) being mounted at the axis center of the rotating switching sleeve (2141), a plurality of mutually communicating V-shaped adjustment grooves (2144) being provided inside the rotating guide sleeve (2143), and a push adjustment shaft (2145) being slidably mounted at the axis center of the rotating guide sleeve (2143). A sliding protrusion (2146) is installed on the outer side of the push adjustment shaft (2145), and the sliding protrusion (2146) is slidably connected to the V-shaped adjustment groove (2144). The interval flow blocking mechanism (214) further includes a limit installation sleeve (2147) installed on the air intake body (212), and the limit installation sleeve (2147) is sleeved on the outer side of the push adjustment shaft (2145). A return spring (2148) is installed between the push adjustment shaft (2145) and the limit installation sleeve (2147).

2. A diesel generator set with a vibration and noise reduction mechanism according to claim 1, characterized in that: The turbulence noise reduction mechanism (22) comprises a plurality of mounting sleeves (221) mounted on the noise reduction housing (4); a connecting pipe (2211) is mounted on the air inlet end of the mounting sleeve (221); the connecting pipe (2211) is connected to the first exhaust hole (2121); a discharge collection port is provided at the bottom of the mounting sleeve (221); an exhaust port is provided at the top of the mounting sleeve (221); a limited mounting frame (222) is mounted inside the mounting sleeve (221); a rotation adjustment sleeve (223) is mounted on the outside of the limited mounting frame (222); and the limited mounting frame A plurality of fixed noise-reducing blocks (2221) distributed at equal intervals are fixedly installed inside the (222), and a plurality of movable noise-reducing blocks (2231) staggered with the fixed noise-reducing blocks (2221) are also rotatably installed inside the position-limiting mounting frame (222), the movable noise-reducing blocks (2231) being fixedly connected to the rotating adjustment sleeve (223), a plurality of airflow holes (2232) are provided on both the movable noise-reducing blocks (2231) and the fixed noise-reducing blocks (2221), and a detachable collection track (224) is installed on the discharge collection port.

3. A diesel generator set with a vibration and noise reduction mechanism according to claim 2, characterized in that: The movable sound-absorbing flow-blocking block (2231) has the same structure as the fixed sound-absorbing flow-blocking block (2221); an axial through hole (2233) is provided at the axial center position of the movable sound-absorbing flow-blocking block (2231); the axial through hole (2233) and the air flow hole (2232) are interconnected; and a high-temperature resistant sound-absorbing layer (2234) is provided inside the movable sound-absorbing flow-blocking block (2231).

4. A diesel generator set with a vibration and noise reduction mechanism according to claim 3, characterized in that: The flow disturbance and noise reduction mechanism (22) further includes a cleaning mechanism (225), the cleaning mechanism (225) including a pull-out shaft (2251) installed inside the flow disturbance and noise reduction mechanism (22), the pull-out shaft (2251) being slidably connected to the axial through hole (2233) of the movable sound-absorbing flow-blocking block (2231), a pull-out bracket (2252) being installed at one end of the pull-out shaft (2251), and a wire brush (2253) being provided on the pull-out bracket (2252).

5. The diesel generator set with a vibration and noise reduction mechanism according to claim 1, characterized in that: A supporting plate (31) is provided above the shock-absorbing base (3), and a plurality of elastic buffer members (32) are installed between the supporting plate (31) and the shock-absorbing base (3).

6. The diesel generator set with a vibration and noise reduction mechanism according to claim 1, characterized in that: A vacuum sound insulation cavity (41) and a silencer cavity (42) are provided in the wall thickness of the noise reduction housing (4). The silencer cavity (42) is provided with a plurality of silencer holes (43) communicating with the interior of the noise reduction housing (4). Silencing cotton (44) is also installed on the inner wall of the silencer cavity (42).

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