CN204704012U - A kind of combustion engine intake grill silencing apparatus - Google Patents
A kind of combustion engine intake grill silencing apparatus Download PDFInfo
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- CN204704012U CN204704012U CN201520227528.2U CN201520227528U CN204704012U CN 204704012 U CN204704012 U CN 204704012U CN 201520227528 U CN201520227528 U CN 201520227528U CN 204704012 U CN204704012 U CN 204704012U
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- combustion engine
- anechoic sheet
- perforated plate
- intake grill
- engine intake
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Abstract
The utility model relates to a kind of combustion engine intake grill silencing apparatus, it is characterized in that: it comprises the housing of a rectangle, multiple structural frame be criss-cross arranged is fixedly connected with in enclosure interior, enclosure interior space is separated into multiple space cell, and in each space cell, interval is fixedly connected with multiple to be arranged vertically and in the anechoic sheet of chip, each anechoic sheet comprises the anechoic sheet framework of a rectangle, the perforated plate in a band fire prevention face is fixedly connected with respectively in the both sides, front and back of anechoic sheet framework, two spaced apart longitudinal baffles are fixedly connected with in the inside of anechoic sheet framework, anechoic sheet framework is separated into center and is positioned at described center left, the frame of right both sides, the inner side of two perforated plates corresponding to center arranges a metal sound absorption structure respectively, each metal sound absorption structure comprises the micropore corrosion resistant plate that two time intervals are arranged, be connected by a skeleton between two micropore corrosion resistant plates, two fit near seamless unoccupied place between the micropore corrosion resistant plate and two perforated plates of perforated plate side.
Description
Technical field
The utility model relates to a kind of silencing apparatus, particularly a kind of combustion engine intake grill silencing apparatus.
Background technique
Along with the further acceleration of China's process of industrialization and the further raising of social people's livelihood demand, strengthen to the improvement of all kinds of noise source of industrial enterprise that oneself becomes inevitable trend.Combustion engine intake grill noise is exposure sound source main in plant gas, and this noise belongs to the higher broadband noise of low-frequency component, because low frequency is serious, frequency band range is wide, belongs to the sound source compared with refractory reason in the numerous sound source of power plant.According to actual measurement, gas turbine noise is the main noise source of combustion engine intake grill.Due to the restriction by cost and design difficulty, therefore combustion engine producer to the control of noise generally only to the 85dB (A) meeting concentration accord with requirement of occupational health, to ensure that workman can enter the replacing that filter core is carried out in air filter room under equipment running status, but this cannot reach the requirement of " Industrial Enterprise Factory Boundary ambient noise emission standard " limit value far away.
In addition, the layout of the muffling unit that existing silencing apparatus adopts cannot meet combustion gas intake grill aerodynamic quality, and the pressure loss causes greatly the working efficiency affecting combustion engine, and existing silencing apparatus cannot reduce low-frequency range combustion engine intake grill noise effectively; Combustion engine intake grill requires the generation avoiding foreign material, and conventional muffler adopts glass wool material can cause distributing of particulate matter, affects the running of combustion engine intake grill.For the noise processed of combustion engine intake grill, if select to arrange sound barrier at combustion engine intake grill to control, according to the air intake demand of combustion engine, the position of sound barrier needs to maintain a certain distance with combustion engine intake grill, because the combustion engine intake grill land used of power plant is nervous, combustion engine intake grill distance factory building parapet only has two meters of spaces, this will require to stop space for combustion engine intake grill noise reduction at the beginning of plant designing, therefore adopt the mode that sound barrier is set will increase larger investment, and combustion engine air intake may be affected.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of low pressure loss, can effectively widen noise elimination frequency band and avoid the combustion engine intake grill silencing apparatus of outside radioactive particles thing.
For achieving the above object, the utility model takes following technological scheme: a kind of combustion engine intake grill silencing apparatus, it is characterized in that: it comprises the housing of a rectangle, multiple structural frame be criss-cross arranged is fixedly connected with in described enclosure interior, described enclosure interior space is separated into multiple space cell, and in space cell described in each, interval is fixedly connected with multiple to be arranged vertically and in the anechoic sheet of chip, anechoic sheet described in each comprises the anechoic sheet framework of a rectangle, the perforated plate in a band fire prevention face is fixedly connected with respectively in the both sides, front and back of described anechoic sheet framework, two spaced apart longitudinal baffles are fixedly connected with in the inside of described anechoic sheet framework, described anechoic sheet framework is separated into center and is positioned at described center left, the frame of right both sides, described in corresponding to described center two, the inner side of perforated plate arranges a metal sound absorption structure respectively, metal sound absorption structure described in each comprises the micropore corrosion resistant plate that two time intervals are arranged, be connected by a skeleton between micropore corrosion resistant plate described in two, described in two described micropore corrosion resistant plates and two near described perforated plate side, between perforated plate, fit in seamless unoccupied place.
Two are connected multiple upper and lower spaced apart lateral partitions away from the described micropore corrosion resistant plate of described perforated plate side with the cavity internal fixtion that longitudinal baffle described in two surrounds, and are fixedly connected with multiple upper and lower spaced apart lateral partitions in the described frame of described center arranged on left and right sides respectively.
Two away from described perforated plate side described micropore corrosion resistant plate and two described in be filled with super glass wool in the cavity that surrounds of longitudinal baffle, be filled with super glass wool respectively in the cavity that described in the described frame and two of described center arranged on left and right sides, perforated plate is formed.
Described in each, the left and right two ends of anechoic sheet are respectively arranged with a water conservancy diversion point.
Described skeleton adopts king's character form structure.
The external layer of described super glass wool is provided with voluminous yarn glass fiber cloth, described voluminous yarn glass fiber cloth is fastened on the surface inside perforated plate described in two.
The utility model is owing to taking above technological scheme, it has the following advantages: 1, each anechoic sheet of the utility model is provided with an anechoic sheet framework, two spaced apart longitudinal baffles are fixedly connected with in the inside of anechoic sheet framework, anechoic sheet framework is separated into center and the frame being positioned at center arranged on left and right sides, a metal sound absorption structure is respectively arranged with inside two perforated plates corresponding to center, this metal sound absorption structure can avoid outside radioactive particles thing effectively, thus reaches the clean requirement of intake grill.2, super glass wool is filled with in the cavity that two in the utility model metal sound absorption structure surrounds away from micropore corrosion resistant plate and two longitudinal baffles of perforated plate side, be filled with super glass wool respectively in the cavity that the frame of center arranged on left and right sides and two perforated plates are formed, sound absorption frequency range can be expanded.3, the utility model is fixedly connected with air filter, can reduce the space shared by the utility model; Effectively corollary equipment can also be formed with air filter on the basis not changing intake grill outward appearance after installation.4, the utility model is arranged between rainhat and air filter, and the utility model takes the layout arrangement mode corresponding with cartridge filter, can avoid extra pitot loss; And the sheet spacing increased in each space cell between every two anechoic sheets, wind speed between every two anechoic sheets can be reduced to reduce the pitot loss of corollary equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the structural representation of the utility model anechoic sheet
Fig. 3 be Fig. 2 A-A to cross-sectional schematic
Fig. 4 be Fig. 2 B-B to cross-sectional schematic
Fig. 5 is the partial enlargement structural representation of the utility model anechoic sheet
Cross-sectional schematic when Fig. 6 is the utility model use
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises the housing 1 of a rectangle, multiple structural frame 2 be criss-cross arranged is fixedly connected with in housing 1 inside, housing 1 inner space is separated into multiple space cell, and in each space cell, interval is fixedly connected with multiple to be arranged vertically and in the anechoic sheet 3 of chip.
As shown in figs. 2 to 4, each anechoic sheet 3 comprises the anechoic sheet framework 4 of a rectangle, the perforated plate 5 in a band fire prevention face is fixedly connected with respectively in the both sides, front and back of anechoic sheet framework 4, be fixedly connected with two spaced apart longitudinal baffles 6 in the inside of anechoic sheet framework 4, anechoic sheet framework 4 be separated into center and the frame being positioned at center arranged on left and right sides.The inner side of two perforated plates 5 corresponding to center arranges a metal sound absorption structure respectively, each metal sound absorption structure comprises the micropore corrosion resistant plate 7 (as shown in Figure 5) that two time intervals are arranged, be connected by a skeleton 8 between two micropore corrosion resistant plates 7, wherein, fit near seamless unoccupied place between the micropore corrosion resistant plate 7 and perforated plate 5 of perforated plate 5 side.Two surround a resonant cavity away from the micropore corrosion resistant plate 7 of perforated plate 5 side and two longitudinal baffles 6.This metal sound absorption structure can avoid outside radioactive particles thing effectively.Two metal sound absorption structures and resonant cavity form pair of lamina microporous sound absorbing structure, and double-deck microporous sound absorbing structure and two perforated plates 5 corresponding thereto form a resonance muffler section.The frame and two perforated plates 5 that are positioned at anechoic sheet framework 4 arranged on left and right sides constitute the resistance noise reduction section being positioned at resonant silencing section both sides.
In above-described embodiment, in the frame of resonant cavity with center arranged on left and right sides, multiple upper and lower spaced apart lateral partitions 9 can be fixedly connected with respectively, the intensity of anechoic sheet framework 4 can be strengthened.
In above-described embodiment, as shown in Figure 3, Figure 4, in the resonant cavity of resonant silencing section and the resistance noise reduction section of resonant silencing section both sides, be filled with super glass wool 10 respectively, sound absorption frequency range can be expanded.
In above-described embodiment, the external layer of the super glass wool 10 in the resonant cavity and two resistance noise reduction sections of resonant silencing section is provided with voluminous yarn glass fiber cloth, and surface voluminous yarn glass fiber cloth is fastened on inside two perforated plates 5, can prevent the chip of super glass wool 10 from flowing out from perforated plate 5.
In above-described embodiment, be respectively arranged with a water conservancy diversion point 11 at the left and right two ends of each anechoic sheet 3, the resistance that air-flow runs can be reduced.
In above-described embodiment, a skeleton 8 can adopt king's character form structure.
The utility model in use, as shown in Figure 6, first housing 1 bottom is fixedly connected in a bracket (not shown), the side of housing 1 connects a rainhat 13 by a changeover portion 12, opposite side is fixedly connected with an air filter 14, the often longitudinally height of row longitudinal construction frame 2 and the longitudinally highly corresponding of air filter 14, the horizontal width of every Rotating fields frame 2 is corresponding with the horizontal width of air filter 14.Wherein, an access path door is provided with in the side of the bottom of changeover portion, often the layout of row longitudinal construction frame 2 and changeover portion 12 adopts identical layering, and arranges corresponding with the layout of cartridge filter (not shown), can avoid extra pitot loss.In housing 1, increase the sheet spacing in each space cell between every two anechoic sheets 3, wind speed between every two anechoic sheets 3 can be reduced to reduce pitot loss.When air-flow is through rainhat 13, enters housing 1 by changeover portion 12, after anechoic sheet 3 noise reduction in housing 1, enter in air filter 14.
The various embodiments described above are only for illustration of the utility model; wherein the structure, Placement etc. of each parts all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (8)
1. a combustion engine intake grill silencing apparatus, it is characterized in that: it comprises the housing of a rectangle, multiple structural frame be criss-cross arranged is fixedly connected with in described enclosure interior, described enclosure interior space is separated into multiple space cell, and in space cell described in each, interval is fixedly connected with multiple to be arranged vertically and in the anechoic sheet of chip;
Anechoic sheet described in each comprises the anechoic sheet framework of a rectangle, the perforated plate in a band fire prevention face is fixedly connected with respectively in the both sides, front and back of described anechoic sheet framework, two spaced apart longitudinal baffles are fixedly connected with in the inside of described anechoic sheet framework, described anechoic sheet framework is separated into center and is positioned at described center left, the frame of right both sides, described in corresponding to described center two, the inner side of perforated plate arranges a metal sound absorption structure respectively, metal sound absorption structure described in each comprises the micropore corrosion resistant plate that two time intervals are arranged, be connected by a skeleton between micropore corrosion resistant plate described in two, described in two described micropore corrosion resistant plates and two near described perforated plate side, between perforated plate, fit in seamless unoccupied place.
2. a kind of combustion engine intake grill silencing apparatus as claimed in claim 1, it is characterized in that: two are connected multiple upper and lower spaced apart lateral partitions away from the described micropore corrosion resistant plate of described perforated plate side with the cavity internal fixtion that longitudinal baffle described in two surrounds, and are fixedly connected with multiple upper and lower spaced apart lateral partitions in the described frame of described center arranged on left and right sides respectively.
3. a kind of combustion engine intake grill silencing apparatus as claimed in claim 1, it is characterized in that: two away from described perforated plate side described micropore corrosion resistant plate and two described in be filled with super glass wool in the cavity that surrounds of longitudinal baffle, be filled with super glass wool respectively in the cavity that described in the described frame and two of described center arranged on left and right sides, perforated plate is formed.
4. a kind of combustion engine intake grill silencing apparatus as claimed in claim 2, it is characterized in that: two away from described perforated plate side described micropore corrosion resistant plate and two described in be filled with super glass wool in the cavity that surrounds of longitudinal baffle, be filled with super glass wool respectively in the cavity that described in the described frame and two of described center arranged on left and right sides, perforated plate is formed.
5. a kind of combustion engine intake grill silencing apparatus as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described in each, the left and right two ends of anechoic sheet are respectively arranged with a water conservancy diversion point.
6. a kind of combustion engine intake grill silencing apparatus as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described skeleton adopts king's character form structure.
7. a kind of combustion engine intake grill silencing apparatus as claimed in claim 5, is characterized in that: described skeleton adopts king's character form structure.
8. a kind of combustion engine intake grill silencing apparatus as described in claim 3 or 4, is characterized in that: the external layer of described super glass wool is provided with voluminous yarn glass fiber cloth, described voluminous yarn glass fiber cloth is fastened on the surface inside perforated plate described in two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227528.2U CN204704012U (en) | 2015-04-15 | 2015-04-15 | A kind of combustion engine intake grill silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227528.2U CN204704012U (en) | 2015-04-15 | 2015-04-15 | A kind of combustion engine intake grill silencing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704012U true CN204704012U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520227528.2U Active CN204704012U (en) | 2015-04-15 | 2015-04-15 | A kind of combustion engine intake grill silencing apparatus |
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| CN (1) | CN204704012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367753A (en) * | 2018-07-30 | 2019-02-22 | 沪东中华造船(集团)有限公司 | A kind of ship loading cabin noise elimination wind conduit |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
-
2015
- 2015-04-15 CN CN201520227528.2U patent/CN204704012U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367753A (en) * | 2018-07-30 | 2019-02-22 | 沪东中华造船(集团)有限公司 | A kind of ship loading cabin noise elimination wind conduit |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
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| GR01 | Patent grant |