CN215633351U - Generating set silence sound insulation system and generating set - Google Patents
Generating set silence sound insulation system and generating set Download PDFInfo
- Publication number
- CN215633351U CN215633351U CN202022601985.7U CN202022601985U CN215633351U CN 215633351 U CN215633351 U CN 215633351U CN 202022601985 U CN202022601985 U CN 202022601985U CN 215633351 U CN215633351 U CN 215633351U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- silencing
- sound insulation
- air
- generator set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a generating set mute sound insulation system and a generating set, comprising a sound insulation cover and a silencing system, wherein the sound insulation cover is provided with an air inlet and an air outlet, and the silencing system comprises an air inlet side silencing device arranged on the inner side of the air inlet and an air outlet side silencing device arranged on the inner side of the air outlet; the air inlet side silencing device and the air outlet side silencing device are respectively and correspondingly arranged on the inner sides of the air inlet and the air outlet on the sound insulation cover, so that the aim of reducing noise is fulfilled while air is ensured to be introduced, the external transmission of internal noise is blocked, absorbed or reflected, most part of noise can be better eliminated and isolated, the noise is reduced to be within the required standard on the basis of the prior art, the requirement of environmental protection is met, meanwhile, the ventilation and cooling effects of the generator set can be ensured, and the generator set can be normally used.
Description
Technical Field
The utility model relates to an accessory part of a generator set and the generator set, in particular to a mute sound insulation system of the generator set and the generator set.
Background
The generator set is used as a standby power supply and plays a considerable role in various fields of national production and life. The generator set has various models and power according to different requirements. For example, the noise generated by a diesel generator set after starting is over 100dB (A), and the noise pollutes the environment, thereby affecting the popularization and the use of the diesel generator set. In order to solve the problems, the outer parts of the diesel generator sets are covered with sound insulation covers, and the noise which is transmitted outwards is reduced as much as possible through the sound insulation covers, so that the noise of the generator sets is reduced. However, the operation of the generator set can generate larger heat, and the sound insulation cover can restrict the heat emission under the condition of reducing noise, so that in order to ensure that the generator set in the sound insulation cover does not have too high temperature, an air inlet and an air outlet are usually formed on the surface of the sound insulation cover to form forced ventilation, form heat emission and ensure the normal operation of the generator set. However, after the air inlet and the air outlet are opened, the noise reduction effect of the sound insulation cover is relatively poor, and the air inlet and the air outlet can generate noise in the ventilation process and can be overlapped with the noise of the generator set to form noise pollution. Due to the structural arrangement, the noise of the generator set cannot be reduced or is not easily reduced within the standard, and therefore, how to effectively reduce the noise of the generator set within the standard also becomes a technical problem to be solved by the technical staff in the field.
Therefore, need improve current sound insulation system, can be better with the elimination and the isolation of the great part of noise, fall the noise to within the standard of requirement on current basis, accord with the environmental protection requirement, simultaneously, can also guarantee generating set's ventilation cooling effect to make generating set can normal use.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a generator set mute sound insulation system and a generator set, which can better eliminate and isolate a larger part of noise, reduce the noise to within a required standard on the existing basis, meet the requirement of environmental protection, and simultaneously ensure the ventilation and cooling effect of the generator set, so that the generator set can be normally used.
The utility model relates to a mute sound insulation system of a generator set, which comprises a sound insulation cover and a silencing system, wherein the sound insulation cover is provided with an air inlet and an air outlet, and the silencing system comprises an air inlet side silencing device arranged at the air inlet and/or an air outlet side silencing device arranged at the air outlet; the structure of the sound insulation cover belongs to the prior art, and comprises a top, a front end plate, a rear end plate, a left side plate and a right side plate which form an integral outer cover structure and are used for covering the outside of the generator set, and the description is omitted; the outer cover structure is provided with an air inlet for forcibly introducing flowing air to meet the requirements of cooling the generator set and the running of the engine, and an air outlet for leading the cooled cooling air out of the sound insulation cover to form the continuous running of the engine and the continuous cooling of the generator set; the arrangement of the air inlet and the air outlet generally needs to ensure that cooling air can penetrate through the whole unit, and is not described herein again;
certainly, an air inlet flow guide cover for guiding the inlet air to the air inlet side noise eliminator needs to be arranged between the air inlet side noise eliminator and the air inlet, and meanwhile, noise is prevented from being transmitted out through a gap; an air exhaust guide cover structure can be adopted between the air exhaust outlet and the air exhaust side silencing device according to needs, and details are not repeated.
Further, the muffling system comprises an air inlet side muffling device arranged at the air inlet and an air outlet side muffling device arranged at the air outlet, and in order to ensure the overall appearance and the structural compactness, under a general condition, the air inlet side muffling device is arranged at the inner side of the air inlet and the air outlet side muffling device is arranged at the inner side of the air outlet, and can be arranged at the outer side and directly penetrate through the air inlet or the air outlet (the inner side and the outer side are distributed); the air inlet side silencing device is formed by arranging air inlet side silencing units in parallel, and an air inlet channel is correspondingly formed between every two adjacent air inlet side silencing units; the air inlet channel is communicated with the air inlet (the air inlet air guide cover can be used for introducing air inlet), and meanwhile, the air inlet side silencing unit absorbs, isolates or reflects noise transmitted out by the generator set, so that the environmental noise can be obviously reduced; the air inlet side silencing unit is composed of a structure capable of absorbing noise, isolating noise or reflecting noise, and is not described in detail herein;
the exhaust side silencing device is formed by arranging exhaust side silencing units in parallel, an exhaust channel is correspondingly formed between the exhaust side silencing units, and similarly, the exhaust side silencing units can be consistent with the air inlet side silencing units in structure (can be other silencing structures), and the details are not repeated herein.
Furthermore, the air inlet side silencing unit is of a bent structure, and the air inlet channel is correspondingly a bent air inlet channel; the bending structure refers to that the air inlet side silencing unit has more than one bending or/and turning structure in a continuous state in the air inlet direction, and the bending structure can be bent in a V shape, a C shape, an S shape and a Z shape, can also be bent in a mixed mode of the V shape, the C shape, the S shape and the Z shape, and can also be bent in other shapes, and the expected effect can be achieved, and the description is omitted; the bending part of the bending structure has the functions of reflecting and blocking noise, so that the noise can be greatly reduced, and meanwhile, the passing area of the bent air inlet channel is reasonably controlled, so that the air inlet volume can be ensured to meet the operation requirement of an engine and the cooling of a generator set; meanwhile, the air inlet side silencing device is communicated with the air inlet in a butt joint mode, the area of the end portion of the air inlet side silencing device is equal to or larger than the ventilation area of the air inlet, namely the air inlet side silencing device covers the whole air inlet, and in order to achieve the purpose, the air inlet side silencing device can be mounted on the side wall, provided with the air inlet, of the sound insulation cover, so that the purposes of reducing noise comprehensively and guaranteeing the air inlet amount are achieved;
the exhaust side silencing unit is of a straight plate structure, and the exhaust channel is correspondingly a direct exhaust channel; in the embodiment, the exhaust side silencing units are horizontally arranged in parallel to form a grid structure, and the distance between adjacent exhaust side silencing sheets is 110 mm; as shown in the figure, the air outlet is positioned at the top of the sound insulation cover, and the sound insulation cover top plate is fully distributed in the transverse direction, so that the top strength can be ensured by adopting a unit type design, which is not described again; the air outlet adopts a square grid plate structure, can also be in a parallelogram grid or round hole shape, can achieve the purpose of the utility model, and has better integral strength; the exhaust side silencing device is positioned on the inner side (lower part) of the air outlet, the top exhaust air has a noise reduction effect, and the direct exhaust channel can ensure the smoothness of the exhaust air and is beneficial to the normal operation of the generator set.
Furthermore, the silencing system comprises two air inlets which are respectively an upper air inlet and a lower air inlet, and the upper air inlet and the lower air inlet are vertically arranged; the two air inlet side silencing devices are an upper air inlet side silencing device and a lower air inlet side silencing device which correspond to the upper air inlet and the lower air inlet respectively; as shown in the figure, the upper air inlet side silencing device and the lower air inlet side silencing device are connected up and down and can be fixedly connected into a whole, so that the upper air inlet and the lower air inlet are fully covered, the full noise reduction is ensured, and the passing effect is ensured;
as shown in the figure, the upper air inlet and the lower air inlet are both positioned on the front end plate (the front and the back take the air inlet flow direction as the reference) of the sound insulation cover and are arranged up and down; the two air inlet structures are adopted, so that targeted inlet air can be basically introduced and is respectively used for cooling different parts of the generator set and the operation requirement of an engine, and meanwhile, the phenomenon that the noise is increased due to the fact that a larger air inlet is formed is avoided.
Furthermore, the air inlet side silencing unit and the air exhaust side silencing unit both comprise two perforated plates, an interlayer is formed between the two perforated plates, and sound absorption materials are filled in the interlayer; the perforated plate is of the existing structure, namely, the perforated plate is provided with perforations which are beneficial to noise entering the interior and being absorbed by sound absorption materials, so that the noise transmission is reduced, and meanwhile, the plate surface can form obstruction and reflection to the noise; the hole diameter and the hole opening rate are set, so that the sound absorption and the noise reflection amount can be reasonably matched, and a better noise reduction effect is achieved;
furthermore, the air inlet side silencing units are S-shaped or Z-shaped bent structures, and air inlet channels between two adjacent air inlet side silencing units are S-shaped or Z-shaped bent air inlet channels correspondingly; s-shaped or Z shape structure of buckling can be that a plurality of continuous S-shaped or Z constitute, also can mix the formation, as shown in the figure, Z shape structure of buckling is selected to this embodiment, and the perforated plate directly adopts the section bar, makes simple and conveniently to have better separation, reflection effect, simultaneously, have better absorption effect to the air inlet noise, and select reasonable angle of bending, can enough guarantee better effect of passing through, can also guarantee to form separation and reflection to the noise.
Furthermore, the noise elimination system also comprises a sound insulation layer arranged on the inner side wall of the sound insulation cover, the sound insulation layer comprises a sound absorption material and a fixing plate for fixing the sound absorption material on the inner side wall of the sound insulation cover, and the fixing plate is a perforated plate; the common structure is that a fixing plate is utilized to directly compress a sound absorption material on the inner side wall of the sound insulation cover, the fixing of the fixing plate can adopt the existing mechanical connection structure such as bolts and the like, and the details are not repeated; the fixing plate is a perforated plate with a set perforation diameter and a set perforation rate, and the perforated plate has reflection and blocking effects while the sound absorption material absorbs sound; the sound insulation layer is generally required to avoid the air inlet, the air outlet and other parts arranged on the inner wall of the sound insulation cover, and the description is omitted here.
Furthermore, the flow area of the upper air inlet is larger than that of the lower air inlet, most of the inlet air of the upper air inlet is used for cooling the whole machine and the engine to run due to the arrangement of the structure, and most of the inlet air of the lower air inlet is directly used for cooling the generator; the upper air inlet ensures that the unit has good heat dissipation and air enters an air filter of the engine, the lower air inlet has certain pertinence in order to provide air volume for the generator, and therefore, the size of the air inlet can be set according to needs, so that the noise outflow area is reduced, and the noise of the whole machine is further reduced; when manufacturing and installing, considering the integral structure of the generator set, the structures of the upper air inlet side noise eliminator and the lower air inlet side noise eliminator are also different, and for the adaptive design, as shown in the figure, the upper part of the upper air inlet side noise eliminator extends inwards to an air filter of the engine, so that the upper air inlet can be partially arranged in the air filter, and the lower part is shorter than the upper part to form a step structure for partially cooling the whole machine; the inner air outlet end of the lower air inlet side silencing device is aligned with the generator to achieve a targeted effect, and the description is omitted;
in order to ensure good heat dissipation performance of the generator set, the sum of the areas of the upper air inlet and the lower air inlet is 1.2-1.5 times, preferably 1.4 times, the area of the air outlet of the generator set radiator, and the generator set radiator is an existing heat dissipation part of the generator set and is generally positioned at the tail end of the generator set (according to the air inlet direction); the area of the lower air inlet is 1-1.2 times, preferably 1.1 times, of the area of the cooling air inlet of the generator (positioned at the position below the unit) so as to ensure sufficient cooling air, and meanwhile, noise reduction is considered.
Furthermore, the air inlet is of a louver structure which is arranged up and down, the louver structure is similar to a louver and the blades are relatively fixed, and the blades are obliquely arranged to ensure that the air inlet channel has enough air inlet channel area and certain blocking and reflecting effects on internal noise; the inclination angle of the blades of the louver is not more than 105 degrees, preferably, in the inward direction, the inclination angle of the upward direction relative to a vertical plane is 105 degrees, the louver structure has certain blocking and reflecting effects on noise, and the smaller inclination angle can ensure the smoothness of air inlet and is beneficial to reducing the noise of the air inlet; the air inlet side silencing units are arranged in parallel in the horizontal direction and are vertically crossed with the blades of the shutter structure in a space, so that the air inlet side silencing units are beneficial to blocking, reflecting and absorbing noise, and noise passing channels are reduced; the distance between the two air inlet side silencing units is 5-7%, preferably 7% of the linear distance between the two ends of the air inlet side silencing units, so that smooth air inlet is ensured; the S-shaped or Z-shaped bending angle of the air inlet silencing unit is 100-110 degrees, as shown in the figure, a Z-shaped bending structure is preferred, and the bending angle is 105 degrees; when adopting the S-shaped to buckle, then confirm the angle of buckling through the tangent line, no longer give unnecessary details here, the less air inlet resistance of air inlet can be guaranteed to reasonable angle of buckling, simultaneously, can also form separation and the reflection to the noise.
Furthermore, the perforation apertures of the perforated plates of the air inlet side silencing unit and the air exhaust side silencing unit are not more than 2mm, the perforation rate is not less than 20%, the preferred aperture is 2mm, and the perforation rate is 23%; the perforation aperture of the perforated plate of the sound insulation layer is not more than 2mm, the perforation rate is not less than 20%, the preferred aperture is 2mm, and the perforation rate is 23%.
Furthermore, reinforcing rib plates are fixed on the inner side wall of the sound insulation cover, and the sound insulation layer avoids the reinforcing rib plates and is filled and fixed between the reinforcing rib plates on the inner wall of the sound insulation cover in a sound insulation layer unit mode; generally, a fixing plate is directly fixed on the reinforcing rib plates through mechanical structures such as bolts, and a sound absorption material is directly filled between the reinforcing rib plates, so that the integral structure is simple and complete, the noise reduction and sound insulation effects are good, and meanwhile, the reinforcing rib plates and the sound insulation layer have the mutual reinforcement effect; certainly, the spaces between the reinforcing rib plates are not required to be consistent, and the sound insulation layer units are cut and designed according to the spaces with different sizes, which is not described again;
the sound insulation layer and the sound absorption materials of the air inlet side silencing unit and the air exhaust side silencing unit are selected to be 50mm in thickness and 45kg/m in density3The surface is a bright film type polyester fiber, of course, other materials with sound absorption and better fireproof effect can be adopted, and are not described again; since the thickness of the sound absorbing material is 50mm, and after the sound absorbing material is provided with the perforated plate with the conventional thickness, the thickness of the sound insulating layer and the thickness of the air inlet side silencing unit and the air outlet side silencing unit are about 50mm, the sound absorbing material is not redundant at the momentThe above-mentioned processes are described.
According to the utility model, an air inlet silencing single space is formed in the front of a sound insulation cover, a power installation space is formed in the middle of the sound insulation cover, an exhaust silencing space is formed in the space behind a radiator of a generator set, a larger resonant cavity is formed in the whole sound insulation cover after a sound insulation layer is installed on the sound insulation cover, a silencer of an engine is positioned in the exhaust silencing space, an air outlet is positioned at the top of the exhaust silencing space, an exhaust pipe of the silencer can penetrate through the air outlet, the resonant cavity mainly eliminates low-frequency noise, and sound absorption materials (including an air inlet side silencing device, an air outlet side silencing device and a sound insulation layer) mainly absorb medium-high frequency noise; to the puigging, fixed plate (perforated plate), sound absorbing material, sound insulation cover plate (front and back end plate and two side boards, roof) combination form a plurality of impedance combined type noise-abatement structure, can compromise the noise-abatement effect of low frequency and well high frequency, effectively eliminate reverberation in the whole cover, and then effectively reduce the full frequency channel's of unit noise.
Furthermore, the air inlet side silencing device is arranged on the inner side of the air inlet and the air exhaust side silencing device is arranged on the inner side of the air outlet, so that the integral structure is compact, and the appearance is good.
The utility model also discloses a generator set, wherein the generator set adopts the generator set mute sound insulation system; as shown in the figure, the sound insulation cover covers the generator set and is fixed on the base of the generator set to form an integral structure.
The utility model has the beneficial effects that: according to the generating set mute sound insulation system and the generating set, the air inlet side silencing device or/and the air outlet side silencing device are/is arranged on the inner sides of the air inlet and the air outlet on the sound insulation cover, so that the aim of reducing noise is fulfilled while air is introduced, the external transmission of internal noise is blocked, absorbed or reflected, most of the noise can be better eliminated and isolated, the noise is reduced to be within the required standard on the existing basis, the environmental protection requirement is met, meanwhile, the ventilation and cooling effects of the generating set can be guaranteed, and the generating set can be normally used.
Drawings
The utility model is further described below with reference to the figures and examples.
FIG. 1 is a schematic cross-sectional view of the present power generating unit;
FIG. 2 is an isometric view of the generator set appearance;
FIG. 3 is a schematic structural view of a muffler device on the air inlet side;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of FIG. 4B;
FIG. 6 is a schematic structural view of a muffler device on the air exhaust side;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;
FIG. 8 is an enlarged view of FIG. 7D;
FIG. 9 is a schematic (partial) view of the internal structure of the sound-proof enclosure;
FIG. 10 is a cross-sectional view of the acoustical layer after installation;
FIG. 11 is a schematic view (partial) of an air inlet structure;
fig. 12 is a schematic view (partial) of the structure of the air outlet.
Detailed Description
As shown in the figure: the generator set mute sound insulation system comprises a sound insulation cover 1 and a silencing system, wherein an air inlet and an air outlet 6 are arranged on the sound insulation cover, and the silencing system comprises an air inlet side silencing device arranged on the inner side of the air inlet or/and an air outlet side silencing device 7 arranged on the inner side of the air outlet 6;
the structure of the sound insulation cover 1 belongs to the prior art, generally comprises a top, a front end plate, a rear end plate, a left side plate and a right side plate which form an integral outer cover structure and is used for covering the outside of a generator set, and the description is omitted; the sound insulation cover 1 is provided with an air inlet for forcibly introducing flowing air to meet the requirements of cooling the generator set and the running of the engine, and an air outlet for leading the cooled cooling air out of the sound insulation cover to form the continuous running of the engine and the continuous cooling of the generator set; the arrangement of the air inlet and the air outlet generally needs to ensure that cooling air can penetrate through the whole unit, and is not described herein again;
in this embodiment, the muffling system includes an air inlet side muffling device disposed at the air inlet and an air outlet side muffling device disposed at the air outlet, and under general conditions, the air inlet side muffling device is disposed inside the air inlet, i.e., the inlet air passes through the air inlet first and then passes through the air inlet muffling device, and the air outlet side muffling device is disposed inside the air outlet, i.e., the exhaust air passes through the air outlet muffling device first and then passes through the air outlet, and does not necessarily have a directional relationship with the sound-insulating cover itself; namely, the air inlet side silencing device and the air outlet side silencing device are both positioned in the sound insulation cover and are respectively connected with the air inlet and the air outlet;
when the silencer is actually used, the air inlet side silencer can be arranged outside the air inlet and the air outlet side silencer can be arranged outside the air inlet, or the air inlet side silencer can be arranged on the inner side and the outer side of the air inlet and the air outlet side silencer can be arranged on the inner side and the outer side of the air outlet; in this embodiment, the air inlet side muffler device is disposed on the inner side of the air inlet and the air exhaust side muffler device is disposed on the inner side of the air outlet, so that the overall structure is compact and the appearance is good. The inner side and the outer side are relative to the inner direction and the outer direction of the sound insulation cover, and do not need to have an orientation relation with the sound insulation cover, and are not described again;
in this embodiment, the air inlet and the air outlet are both located on the sound-proof cover, the air inlet silencer and the air exhaust silencer are both located inside the sound-proof cover and fixed, and the fixing mode is that the air inlet silencer and the air exhaust silencer are directly fixed on the sound-proof cover by generally adopting the existing mechanical means, which is not described herein again.
Certainly, an air inlet flow guide cover for guiding the inlet air to the air inlet side noise eliminator needs to be arranged between the air inlet side noise eliminator and the air inlet, and meanwhile, noise is prevented from being transmitted out through a gap; an air exhaust guide cover structure can be adopted between the air exhaust outlet and the air exhaust side silencing device according to needs, and details are not repeated.
In this embodiment, as shown in fig. 3, there are two air inlets and two corresponding air inlet side muffling devices, and the upper air inlet side muffling device corresponding to the air inlets is described as an example in this embodiment;
the air inlet side silencing device is formed by arranging air inlet side silencing units 401 in parallel, and an air inlet channel is correspondingly formed between every two adjacent air inlet side silencing units 401; the air inlet channel is communicated with the air inlet (the air inlet air guide cover can be used for introducing air inlet), and meanwhile, the air inlet side silencing unit absorbs, isolates or reflects noise transmitted out by the generator set, so that the environmental noise can be obviously reduced; the air inlet side silencing unit is composed of a structure capable of absorbing noise, isolating noise or reflecting noise, and is not described in detail herein;
the exhaust side silencing device 7 is formed by arranging exhaust side silencing units 701 in parallel, an exhaust channel is correspondingly formed between the exhaust side silencing units, and similarly, the exhaust side silencing units can be consistent with the air inlet side silencing units in structure (or can be of other silencing structures), and details are not repeated herein.
In this embodiment, the air inlet side silencing unit 401 is a bent structure, and the air inlet channel is a bent air inlet channel correspondingly; the bending structure refers to that the air inlet side silencing unit is in a bending structure in the air inlet direction, the bending structure can be in a V-shaped, C-shaped, S-shaped and Z-shaped bending structure, or in a mixed bending structure of the V-shaped, C-shaped, S-shaped and Z-shaped bending structure, or in a bending structure of other shapes, the number of the bending structures or/and the bending structures is at least more than one, and the bending structures or/and the bending structures are in a continuous or continuous state, so that expected effects can be achieved, and the description is omitted; the bending part of the bending structure has the functions of reflecting and blocking noise, so that the noise can be greatly reduced, and meanwhile, the passing area of the bent air inlet channel is reasonably controlled, so that the air inlet volume can be ensured to meet the operation requirement of an engine and the cooling of a generator set; meanwhile, the air inlet side silencing device is communicated with the air inlet in a butt joint mode, the area of the end portion of the air inlet side silencing device is equal to or larger than the ventilation area of the air inlet, namely the air inlet side silencing device covers the whole air inlet, and in order to achieve the purpose, the air inlet side silencing device can be mounted on the side wall, provided with the air inlet, of the sound insulation cover, so that the purposes of reducing noise comprehensively and guaranteeing the air inlet amount are achieved;
the exhaust side silencing unit 701 is of a straight plate structure, and the exhaust channel is correspondingly a straight exhaust channel; in the embodiment, the exhaust side silencing units are horizontally arranged in parallel to form a grid structure, and the distance between adjacent exhaust side silencing sheets is 110 mm; as shown in the figure, the air outlet is positioned at the top of the sound insulation cover, and the sound insulation cover top plate is fully distributed in the transverse direction, so that the top strength can be ensured by adopting a unit type design, which is not described again; the air outlet adopts a square grid plate structure, can also be in a parallelogram grid or round hole shape, can achieve the purpose of the utility model, and has better integral strength; the exhaust side silencing device is positioned on the inner side (lower part) of the air outlet, the top exhaust air has a noise reduction effect, and the direct exhaust channel can ensure the smoothness of the exhaust air and is beneficial to the normal operation of the generator set.
In this embodiment, the number of the air inlets is two, and the two air inlets are an upper air inlet 2 and a lower air inlet 3 respectively, and the upper air inlet 2 and the lower air inlet 3 are arranged vertically; the two air inlet side silencing devices are an upper air inlet side silencing device 4 and a lower air inlet side silencing device 5 which correspond to the upper air inlet 2 and the lower air inlet 3 respectively; as shown in the figure, the upper air inlet side muffler device 4 and the lower air inlet side muffler device 5 are connected up and down and can be fixedly connected into a whole, so that the upper air inlet and the lower air inlet are covered comprehensively, the comprehensive noise reduction is ensured, and the passing effect is ensured;
as shown in the figure, the upper air inlet 2 and the lower air inlet 3 are both located on the front end plate 101 (front and back are based on the air inlet flow direction, as shown by the arrow in fig. 1) of the sound-proof cover 1 and are arranged up and down; the two air inlet structures are adopted, so that targeted inlet air can be basically introduced and is respectively used for cooling different parts of the generator set and the operation requirement of an engine, and meanwhile, the phenomenon that the noise is increased due to the fact that a larger air inlet is formed is avoided.
In this embodiment, the air inlet side muffling unit is taken as an example (the lower air inlet side muffling unit has the same structure and is only different in ventilation length and external dimension, or the bending directions of the air inlet channels are different, but the understanding of the structure of the lower air inlet side muffling device through the structural description of the upper air inlet side muffling device is not affected)), as shown in fig. 4 and 5, the air inlet side muffling unit 401 includes two perforated plates 4011 and 4012, an interlayer is formed between the two perforated plates 4011 and 4012, and a sound absorbing material 4013 is filled in the interlayer; as shown in fig. 7 and 8, the exhaust side silencing unit 701 includes two perforated plates 7011 and 7012, an interlayer is formed between the two perforated plates 7011 and 7012, and a sound absorbing material 7013 is filled in the interlayer; the perforated plate is of the existing structure, namely, the perforated plate is provided with perforations which are beneficial to noise entering the interior and being absorbed by sound absorption materials, so that the noise transmission is reduced, and meanwhile, the plate surface can form obstruction and reflection to the noise; the hole diameter and the hole opening rate are set, so that the sound absorption and the noise reflection amount can be reasonably matched, and a better noise reduction effect is achieved;
the air inlet side silencing units 401 are S-shaped or Z-shaped bent structures, and air inlet channels between two adjacent air inlet side silencing units 401 are S-shaped or Z-shaped bent air inlet channels correspondingly; the S-shaped or Z-shaped bending structure can be formed by a plurality of continuous S-shaped or Z-shaped structures and can also be formed by mixing, and the description is omitted; as shown in the figure, the air inlet channel is also Z-shaped by selecting the Z-shaped bending structure in the embodiment, the perforated plate is directly made of sectional materials, the manufacturing is simple and convenient, the perforated plate has good blocking and reflecting effects, meanwhile, the perforated plate has good absorption effect on air inlet noise, and reasonable bending angles are selected, so that the good passing effect can be ensured, and the blocking and reflecting effects on noise can also be ensured;
in this embodiment, an upper Z-shaped air inlet channel is formed between two adjacent air inlet side muffling units 401 of the upper air inlet side muffling device, and a lower Z-shaped air inlet channel is formed between two adjacent air inlet side muffling units of the lower air inlet side muffling device, because of the Z-shaped air inlet channel, the air outlet directions of the upper Z-shaped air inlet channel and the lower Z-shaped air inlet channel can be set as required (the air outlet directions of the upper Z-shaped air inlet channel and the lower Z-shaped air inlet channel can be the same or different), and the air outlet direction can be toward the cooling generator and the engine for operation by adjusting the bending direction of the air outlets of the upper Z-shaped air inlet channel and the lower Z-shaped air inlet channel, for example, the outlet of the upper Z-shaped air inlet channel can be bent toward the engine air filter to ensure sufficient air consumed by the engine operation, and the lower Z-shaped air inlet channel can be bent toward the generator, so as to ensure that enough air volume is available for cooling the generator, and the description is omitted.
In this embodiment, the sound-deadening system further includes a sound-deadening layer 15 disposed on the inner side wall of the sound-deadening hood, where the sound-deadening layer 15 includes a sound-absorbing material 1502 and a fixing plate 1501 that fixes the sound-absorbing material 1502 on the inner side wall of the sound-deadening hood, and the fixing plate 1501 is a perforated plate; the common structure is that the fixing plate 1501 is used to directly compress the sound absorption material on the inner side wall of the sound insulation cover 1, and the fixing of the fixing plate 1501 can adopt the existing mechanical connection structure such as bolts, and is not described herein; the fixing plate is a perforated plate with a set perforation diameter and a set perforation rate, and the perforated plate has reflection and blocking effects while the sound absorption material absorbs sound; the arrangement of the sound insulation layer generally needs to avoid the air inlet, the air outlet and other parts arranged on the inner wall of the sound insulation cover, and is not described herein again; the structure changes the fixing mode of the sound absorption material which is sticky in the prior art, and avoids the problem that the sound absorption material falls off due to overhigh temperature in the unit.
In the embodiment, the flow area of the upper air inlet 2 is larger than that of the lower air inlet 3, most of the inlet air of the upper air inlet 2 is used for cooling the whole machine and the engine to run due to the arrangement of the structure, and most of the inlet air of the lower air inlet 3 is directly used for cooling the generator; namely, the upper air inlet ensures that the unit has good heat dissipation and air enters the air filter 11 of the engine 12, and the lower air inlet 3 has certain pertinence in order to provide cooling air volume for the generator 10, so that the size of the air inlet can be set according to the requirement, the noise outflow area is reduced, and the noise of the whole machine is further reduced; during manufacturing and installation, considering the integral structure of the generator set, the structures of the upper air inlet side noise eliminator and the lower air inlet side noise eliminator are different, and for adaptive design, as shown in the figure, the upper part of the upper air inlet side noise eliminator extends inwards to an air filter 11 of an engine 12, so that air can be partially fed into the air filter from the upper part, and the lower part of the upper air inlet side noise eliminator is shorter than the upper part of the upper air inlet side noise eliminator to form a step structure which is used for partially cooling the air to cool the whole generator; the inner air outlet end of the lower air inlet side silencing device is aligned with the generator to achieve a targeted effect, and the description is omitted;
as shown in the figure, the inner side of the upper air inlet 2 is provided with an upper air guide sleeve 8 connected with the upper air inlet side noise eliminator 4, and the inner side of the lower air inlet 3 is provided with an upper air guide sleeve 9 connected with the lower air inlet side noise eliminator 5, so that an air guide noise reduction system which is relatively sealed in the whole process is formed;
in order to ensure good heat dissipation performance of the generator set, the sum of the areas of the upper air inlet 2 and the lower air inlet 3 is 1.2-1.5 times, preferably 1.4 times, of the area of an air outlet of a generator set radiator, and the generator set radiator is an existing heat dissipation part of the generator set and is generally positioned at the tail end of the generator set (according to the air inlet direction); the area of the lower air inlet is 1-1.2 times, preferably 1.1 times, of the area of the cooling air inlet of the generator (positioned at the position below the unit) so as to ensure sufficient cooling air, and meanwhile, noise reduction is considered.
In this embodiment, the air inlet (including the upper air inlet 2 and the lower air inlet 3) is a louver structure arranged up and down, where the louver structure is similar to a louver and the blades are relatively fixed, and the blades are arranged obliquely to ensure that the air inlet has a sufficient air inlet channel area and a certain blocking and reflecting effect on the internal noise; the inclination angle of the blades of the louver is not more than 105 degrees, preferably in the inward direction, the upward inclination angle relative to a vertical plane is 105 degrees, the distance between adjacent blades is 20-28mm, preferably 25mm, the blades are conventional blades, the thickness is 2mm, the louver structure has certain blocking and reflecting effects on noise, the smaller inclination angle can ensure the smoothness of inlet air, meanwhile, the smaller blade distance is easy to block the noise, and the integral noise reduction effect is ensured;
the air inlet side silencing units 401 (including an air inlet side silencing unit of an upper air inlet side silencing device and an air inlet side silencing unit of a lower air inlet side silencing device, which are only explained by the air inlet side silencing unit 401 of the upper air inlet side silencing device) are arranged in parallel in the horizontal direction and are vertically crossed with the blades of the louver structure in space, so that the air inlet side silencing units are beneficial to blocking, reflecting and absorbing noise, and noise passing channels are reduced; the distance between the two air inlet side silencing units is 5-7%, preferably 7% of the linear distance between the two ends of the air inlet side silencing units, so that smooth air inlet is ensured; the S-shaped or Z-shaped bending angle of the air inlet silencing unit is 100-110 degrees, as shown in the figure, a Z-shaped bending structure is preferred, and the bending angle is 105 degrees; when adopting the S-shaped to buckle, then confirm the angle of buckling through the tangent line, no longer give unnecessary details here, the less air inlet resistance of air inlet can be guaranteed to reasonable angle of buckling, simultaneously, can also form separation and the reflection to the noise.
In this embodiment, the perforation apertures of the perforated plates of the air intake side silencing unit 401 and the air exhaust side silencing unit 701 are not more than 2mm, the perforation rate is not less than 20%, preferably the aperture is 2mm, and the perforation rate is 23%; the perforated plate of the soundproof layer 15 has a perforation aperture of not more than 2mm and a perforation rate of not less than 20%, preferably a perforation aperture of 2mm and a perforation rate of 23%.
In this embodiment, reinforcing ribs 102 are fixed to the inner side wall of the sound-insulating cover 1, and the sound-insulating layer 15 is filled and fixed between the reinforcing ribs 102 on the inner side wall of the sound-insulating cover in a manner of avoiding the reinforcing ribs 102 as sound-insulating layer units; generally, a fixing plate 1501 is directly fixed on a reinforcing rib plate 102 through mechanical structures such as bolts (a plurality of soundproof layer units can be directly fixed by a common integral plate, the number of the fixing plates does not necessarily require to correspond to that of the soundproof layer units), and a sound absorption material is directly filled in a space 103 between the reinforcing rib plates, so that the integral structure is simple and complete, a good noise reduction and sound insulation effect is achieved, and meanwhile, a mutual reinforcing effect is achieved between the reinforcing rib plate and the soundproof layers; certainly, the spaces 103 between the reinforcing ribs are not required to be consistent, and the sound insulation layer units are cut and designed according to the spaces with different sizes, which is not described again;
the sound insulation layer 15 and the sound absorption materials of the air inlet side silencing unit and the air exhaust side silencing unit are selected to be 50mm in thickness and 45kg/m in density3The surface is a bright film type polyester fiber, of course, other materials with sound absorption and better fireproof effect can be adopted, and are not described again; because the thickness of sound absorbing material is 50mm, after the perforated plate of conventional thickness is added, the sound insulating layer and the air inlet side noise elimination unit and the side noise elimination unit of airing exhaust side noise elimination unit's thickness is about 50mm, and no longer repeated here.
According to the utility model, an air inlet silencing single space is formed in the front part of the sound insulation cover, a power installation space is formed in the middle part of the sound insulation cover, an exhaust silencing space is formed in the space behind a radiator 13 of a generator set, a larger resonant cavity is formed in the whole sound insulation cover after a sound insulation layer is installed, a silencer 14 of an engine 12 is positioned in the exhaust silencing space, the silencer and a silencer exhaust pipe can be cooled by the incoming air of the radiator 13, an air outlet 6 is positioned at the top of the exhaust silencing space, and the exhaust pipe of the silencer 14 can penetrate through the air outlet, so that the silencer and the exhaust pipe are cooled comprehensively by the exhausted air; the resonant cavity mainly eliminates low-frequency noise, and the sound absorption material (comprising an air inlet side noise eliminator, an air exhaust side noise eliminator and a sound insulation layer) mainly absorbs medium-high frequency noise; to the puigging, fixed plate (perforated plate), sound absorbing material, sound insulation cover plate (front and back end plate and two side boards, roof) combination form a plurality of impedance combined type noise-abatement structure, can compromise the noise-abatement effect of low frequency and well high frequency, effectively eliminate reverberation in the whole cover, and then effectively reduce the full frequency channel's of unit noise.
The utility model also discloses a generator set, wherein the generator set adopts the generator set mute sound insulation system; as shown in the figure, the sound insulation cover is covered on the generator set and fixed on the base of the generator set to form an integral structure, the generator set comprises an engine and a generator driven by the engine, and the sound insulation cover belongs to the prior art and is not described herein again; after the sound insulation system is used for the generator set, the good heat dissipation of the generator set is ensured, meanwhile, the sound insulation under the no-load working condition is improved by about 15.8 decibels compared with the prior art, the sound insulation of other loads is improved by about 13 decibels compared with the prior art, the sound insulation effect is obvious, and the noise requirement of the environment on the generator set is met.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A generating set silence sound insulation system which characterized in that: the silencer comprises a sound insulation cover and a silencing system, wherein the sound insulation cover is provided with an air inlet and an air outlet, and the silencing system comprises an air inlet side silencing device arranged at the air inlet and/or an air outlet side silencing device arranged at the air outlet.
2. The generator set silence sound insulation system of claim 1, wherein: the silencing system comprises an air inlet side silencing device arranged at the air inlet and an air outlet side silencing device arranged at the air outlet, the air inlet side silencing device is formed by arranging air inlet side silencing units in parallel, and an air inlet channel is correspondingly formed between every two adjacent air inlet side silencing units; the exhaust side silencing devices are formed by arranging exhaust side silencing units in parallel, and exhaust channels are correspondingly formed between the exhaust side silencing units.
3. The generator set sound silencing and insulating system of claim 2, wherein: the air inlet side silencing unit is of a bent structure, and the air inlet channel is correspondingly a bent air inlet channel; the exhaust side silencing unit is of a straight plate structure, and the exhaust channel is correspondingly a direct exhaust channel.
4. The generator set silence sound insulation system of claim 3, wherein: the number of the air inlets is two, namely an upper air inlet and a lower air inlet, and the upper air inlet and the lower air inlet are vertically arranged; the two air inlet side silencing devices are an upper air inlet side silencing device and a lower air inlet side silencing device which correspond to the upper air inlet and the lower air inlet respectively.
5. The generator set sound silencing and insulating system of claim 2, wherein: the air inlet side silencing unit and the air exhaust side silencing unit both comprise two perforated plates, an interlayer is formed between the two perforated plates, and sound absorption materials are filled in the interlayer.
6. The generator set silence sound insulation system of claim 4, wherein: the air inlet side silencing unit is of an S-shaped or Z-shaped bending structure, and the air inlet channel is correspondingly an S-shaped or Z-shaped bending air inlet channel.
7. The generator set silence sound insulation system of claim 1, wherein: the noise elimination system is still including setting up in the puigging of sound-proof housing inside wall, the puigging includes sound absorbing material and is fixed in the fixed plate of sound-proof housing inside wall with sound absorbing material, the fixed plate is the perforated plate.
8. The generator set silence sound insulation system of claim 6, wherein: the flow area of the upper air inlet is larger than that of the lower air inlet; the air inlet is of a shutter structure which is arranged up and down, the inclination angle of the blades of the shutter is not more than 105 degrees, and the air inlet side silencing units are arranged in parallel in the horizontal direction; the distance between the two air inlet side silencing units is 5-7% of the linear distance between the two ends of the air inlet side silencing unit; the S-shaped or Z-shaped bending angle of the air inlet side silencing unit is 100-110 degrees.
9. The generator set sound silencing and insulating system of claim 2, wherein: the air inlet side silencing device is arranged on the inner side of the air inlet, and the air exhaust side silencing device is arranged on the inner side of the air outlet.
10. A generator set, characterized by: the generator set adopts a generator set mute sound insulation system of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022601985.7U CN215633351U (en) | 2020-11-10 | 2020-11-10 | Generating set silence sound insulation system and generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022601985.7U CN215633351U (en) | 2020-11-10 | 2020-11-10 | Generating set silence sound insulation system and generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633351U true CN215633351U (en) | 2022-01-25 |
Family
ID=79887445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022601985.7U Active CN215633351U (en) | 2020-11-10 | 2020-11-10 | Generating set silence sound insulation system and generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633351U (en) |
-
2020
- 2020-11-10 CN CN202022601985.7U patent/CN215633351U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215633351U (en) | Generating set silence sound insulation system and generating set | |
| CN112360628B (en) | Mute generator set | |
| CN208702788U (en) | Equilateral wedge shape composite muffler | |
| CN215109662U (en) | Centrifugal fire-fighting smoke exhaust fan | |
| JP3426712B2 (en) | Cooling air intake structure of power generator | |
| CN205348870U (en) | Portable silence generators | |
| CN211924331U (en) | Self-protection silent diesel generator set | |
| CN212615634U (en) | Low flow resistance tubular noise elimination room is arranged to big amount of wind tail | |
| CN114526157A (en) | Heat dissipation and noise reduction device for square cabin of high-power generator set | |
| CN111332413A (en) | Fireproof return air silencer for ship cabin | |
| CN210562813U (en) | Sound absorption and insulation wall | |
| CN202250383U (en) | Automatic control noise-proof diesel power generating set | |
| CN218033949U (en) | Refrigerator press cabin and refrigerator | |
| CN213687245U (en) | Nested double-side shutter silencer | |
| CN110821545A (en) | Self-silencing axial flow fan ventilation system for tunnel | |
| CN220083302U (en) | Impedance combined type ventilation muffler | |
| CN217690487U (en) | A high-efficient muffler for reducing low smoke duct noise | |
| CN213904930U (en) | Modular metal resonance silencing elbow | |
| CN111089016B (en) | Noise reduction structure of container unit | |
| CN215860469U (en) | Trailer silence power station | |
| CN216131053U (en) | Ventilation noise-reduction sound-reduction structure for air compressor complete machine | |
| CN217926079U (en) | Mute type container body of container type generator set | |
| CN212689869U (en) | Louver silencer for ventilation and heat dissipation | |
| CN217582305U (en) | Square cabin power station | |
| CN211342993U (en) | Self-silencing axial flow fan ventilation system for tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |