CN112984768A - Noise reduction structure - Google Patents
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- CN112984768A CN112984768A CN202110286595.1A CN202110286595A CN112984768A CN 112984768 A CN112984768 A CN 112984768A CN 202110286595 A CN202110286595 A CN 202110286595A CN 112984768 A CN112984768 A CN 112984768A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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Abstract
The present invention provides a noise reduction structure comprising: the base body is provided with a plurality of installation spaces; a plurality of first unit blocks installed in the plurality of installation spaces; a plurality of second unit blocks installed in the plurality of installation spaces; the first cell block and the second cell block are arranged at intervals, the first cell block comprises a plurality of first core grid units forming a first honeycomb structure, the second cell block comprises a plurality of second core grid units forming a second honeycomb structure, and the size of the first core grid units is larger than that of the second core grid units. The technical scheme of this application has solved honeycomb structure among the relevant art effectively and has produced the saddle and then can influence the problem of noise processing when crooked easily to and adapt to the noise reduction of more extensive noise frequency.
Description
Technical Field
The invention relates to the technical field of noise processing, in particular to a noise reduction structure.
Background
Noise is a sound that is harmful to human health, and also adversely affects the nature and animals with which humans coexist. Noise is generally the sound produced by the vibration of a substance. Reducing noise pollution is an important issue for environmental protection, such as noise elimination and reduction of typical urban ventilation systems, noise reduction of blowing pipelines, and the like.
The traditional noise reduction is generally processed by sound absorption materials such as glass wool, mineral wool, microporous bricks and the like, the prior art uses a microporous plate noise elimination technology, particularly, a metal honeycomb core interlayer in a metal microporous plate has ideal noise reduction effect, is water-proof and oil-proof, can obtain good noise reduction performance at a smaller weight cost, and has a stable structure, safety and reliability. However, the processing of arc, round and conical shapes of the noise reduction products manufactured by the microporous plate and the conventional metal honeycomb structure is difficult, and because the edges of the metal honeycomb core are mutually drawn and processed into the arc when stressed, the shapes of the round and conical shapes can have serious saddle shapes, the saddle shapes need to be repeatedly corrected, the processing is difficult, and the fixed connection of the metal honeycomb and the perforated plate is also a difficult problem in processing.
Disclosure of Invention
The main objective of the present invention is to provide a noise reduction structure to solve the problem that the honeycomb structure in the related art is prone to generate saddle shape when being bent, which may affect the noise processing.
In order to achieve the above object, according to one aspect of the present invention, there is provided a noise reduction structure comprising: the base body is provided with a plurality of installation spaces; a plurality of first unit blocks installed in the plurality of installation spaces; a plurality of second unit blocks installed in the plurality of installation spaces; the first cell block and the second cell block are arranged at intervals, the first cell block comprises a plurality of first core grid units forming a first honeycomb structure, the second cell block comprises a plurality of second core grid units forming a second honeycomb structure, and the size of the first core grid units is larger than that of the second core grid units.
Further, the base body includes a cylinder body, a plurality of first unit blocks are arranged along a circumferential direction of the base body, a plurality of second unit blocks are arranged along the circumferential direction of the base body, and the first unit blocks and the second unit blocks are arranged at intervals along an axial direction of the base body.
Further, the size of the first unit block is greater than or equal to the size of the second unit block; the substrate includes a flat surface or a curved surface.
Furthermore, the first unit block further comprises a first arc-shaped plate body and a second arc-shaped plate body, the first core lattice unit is located between the first arc-shaped plate body and the second arc-shaped plate body, the first arc-shaped plate body is located on the outer side of the second arc-shaped plate body, the second unit block further comprises a third arc-shaped plate body and a fourth arc-shaped plate body, the second core lattice unit is located between the third arc-shaped plate body and the fourth arc-shaped plate body, and the third arc-shaped plate body is located on the outer side of the fourth arc-shaped plate body.
Furthermore, the first unit block further comprises a fifth arc-shaped plate body, the fifth arc-shaped plate body is located inside the first core grid unit, the fifth arc-shaped plate body is arranged at intervals with the first arc-shaped plate body and the second arc-shaped plate body, the second unit block further comprises a sixth arc-shaped plate body, the sixth arc-shaped plate body is located inside the second core grid unit, and the sixth arc-shaped plate body is arranged at intervals with the third arc-shaped plate body and the fourth arc-shaped plate body.
Further, first arc plate body, third arc plate body, fifth arc plate body and sixth arc plate body are the perforated plate, and second arc plate body and fourth arc plate body are the perforated plate or are the solid plate.
Further, the shape of the wells on the multi-well plate includes one or more of a cross-star shape, a rectangular shape, a circular shape, and an oval shape.
Further, the thickness of the first unit block and the second unit block are both between 10 mm and 200 mm, and the area of the upper surfaces of the first unit block and the second unit block is greater than or equal to 400mm2。
Furthermore, the first unit block and the second unit block are welded or bonded with the base body, the first arc-shaped plate body, the second arc-shaped plate body and the fifth arc-shaped plate body are all in adhesive connection or brazing connection with the first core lattice unit, and the third arc-shaped plate body, the fourth arc-shaped plate body and the sixth arc-shaped plate body are all in adhesive connection or brazing connection with the second core lattice unit.
Further, the base body comprises a plurality of annular metal plates extending along the circumferential direction of the cylinder body and a plurality of metal plates extending along the axial direction of the cylinder body, the annular metal plates are arranged at intervals, the annular metal plates and the metal plates are arranged in a crossed mode, and two adjacent annular metal plates and two adjacent metal plates jointly form an installation space.
According to the technical scheme, the base body is provided with the plurality of installation spaces, and the plurality of first unit blocks and the plurality of second unit blocks are installed in the installation spaces. The first unit block and the second unit block are spaced apart, the first unit block includes a plurality of first core cells forming a first honeycomb structure, the second unit block includes a plurality of second core cells forming a second honeycomb structure, and a size of the first core cells is larger than a size of the second core cells. Through the arrangement, the plurality of first unit blocks and the plurality of second unit blocks can avoid overlarge bending, and the possibility of saddle shape can be reduced. Therefore, the technical scheme of the application effectively solves the problem that the honeycomb structure in the related art is easy to generate saddle shape when being bent, and then noise processing is influenced. Simultaneously, because the size of first core check unit and second core check unit is different, make first honeycomb and second honeycomb can fall the noise to the noise of different frequencies and wavelength like this to can make the effect of falling the noise better. And the structure can also facilitate the on-site installation and disassembly and is suitable for the noise reduction of wider noise frequency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic perspective view of an embodiment of a noise reducing structure according to the present invention;
fig. 2 shows a schematic perspective view of a first unit block of the noise reduction structure of fig. 1;
fig. 3 shows a perspective schematic view of the first unit block of fig. 2;
fig. 4 shows a schematic perspective view of a second unit block of the noise reduction structure of fig. 1;
fig. 5 shows a perspective schematic view of the second unit block of fig. 4;
FIG. 6 illustrates a perspective view of a base of the noise reduction structure of FIG. 1;
FIG. 7 shows an exploded view of the base of FIG. 6;
fig. 8 shows a cross-sectional view of the first unit block of fig. 2;
fig. 9 shows a cross-sectional view of the second unit block of fig. 4.
Wherein the figures include the following reference numerals:
10. a substrate; 11. an installation space; 12. a metal plate; 13. an annular metal plate; 20. a first unit block; 21. a first core cell unit; 22. a first arc-shaped plate body; 23. a second arc-shaped plate body; 24. a fifth arc-shaped plate body; 25. a first reinforcing structure; 30. a second unit block; 31. a second core cell unit; 32. a third arc-shaped plate body; 33. a fourth arc-shaped plate body; 34. a sixth arc-shaped plate body; 35. a second reinforcing structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The noise reduction technology is generally processed by adopting porous sound absorption materials, inorganic fibers, organic fibers, foam materials, sound absorption building materials, such as glass wool, mineral wool, microporous bricks and the like. The porous material is loose and difficult to fix, and is not beautiful. The traditional noise reduction technology occupies a large space, is high in maintenance cost, and has certain requirements on water and oil in the environment. In the correlation technique, adopt micropore board noise elimination technique, but the structure between the micropore board is mostly for fossil fragments support, and some wherein fill noise elimination material to fossil fragments support interval can not be too big, and fossil fragments interval is too big, and the micropore board can produce the tremble under the fluid excitation, so fossil fragments arrange relatively densely and relatively heavy to fossil fragments occupy the micropore board space and have weakened noise elimination effect. The structure is composed of a micro-perforated plate and a honeycomb core, good noise reduction performance can be obtained at a low weight cost, but arc, circular and conical shapes are difficult to process when the micro-perforated plate and a conventional metal honeycomb structure are used for manufacturing noise reduction products, the arc is mutually drawn and processed between each edge of the metal honeycomb core when the micro-perforated plate and the conventional metal honeycomb structure are stressed, the severe saddle shape can appear during circular and conical shapes, the saddle shape needs to be repeatedly corrected, the processing is difficult, and the fixed connection of the metal honeycomb and the perforated plate is also a difficult problem in processing.
In summary, the conventional noise reduction technology, especially the honeycomb core embedded in the perforated plate, has complex processing procedures for the noise reduction body with arc and circular and complex curved surface structures, high cost and easy generation of saddle shape.
In order to solve the above-described problem, as shown in fig. 1 to 7, in the present embodiment, the noise reduction structure includes: the base 10, the plurality of first unit blocks 20, and the plurality of second unit blocks 30, and the plurality of mounting spaces 11 are provided on the base 10. The plurality of first unit blocks 20 are installed in the plurality of installation spaces 11. The plurality of second unit blocks 30 are installed in the plurality of installation spaces 11. Wherein the first cell block 20 and the second cell block 30 are spaced apart, the first cell block 20 includes a plurality of first core cells 21 forming a first honeycomb structure, the second cell block 30 includes a plurality of second core cells 31 forming a second honeycomb structure, and a size of the first core cells 21 is larger than a size of the second core cells 31.
With the technical solution of the present embodiment, the base 10 is provided with a plurality of mounting spaces 11, and the plurality of first unit blocks 20 and the plurality of second unit blocks 30 are mounted in the mounting spaces 11. The first cell block 20 and the second cell block 30 are spaced apart, the first cell block 20 includes a plurality of first core cells 21 forming a first honeycomb structure, the second cell block 30 includes a plurality of second core cells 31 forming a second honeycomb structure, and the first core cells 21 have a size larger than that of the second core cells 31. With the above arrangement, the plurality of first unit blocks 20 and the plurality of second unit blocks 30 can be prevented from being excessively bent, and the possibility of occurrence of the saddle shape can be reduced. Therefore, the technical scheme of the embodiment effectively solves the problem that the honeycomb structure in the related art is easy to generate saddle shape when being bent, and thus noise processing is influenced. Meanwhile, because the first core grid unit 21 and the second core grid unit 31 have different sizes, the first honeycomb structure and the second honeycomb structure can reduce noise aiming at noises with different frequencies and wavelengths, and thus the noise reduction effect is good. And the structure can also facilitate the on-site installation and disassembly and is suitable for the noise reduction of wider noise frequency.
In the technical scheme of the embodiment, the surfaces of the plurality of first core grid units 21 and the plurality of second core grid units 31 can be closely covered by porous plates with different specifications in different combinations according to field working conditions. The plurality of first unit blocks 20 and the plurality of second unit blocks 30 are installed in the installation space 11, and the plurality of first unit blocks 20 and the plurality of second unit blocks 30 may be individually installed in combination.
In an embodiment not shown in the figures, the noise reduction structure may further include a third unit block and a fourth unit block or more unit blocks. Therefore, noise reduction can be performed according to the noise with different frequencies and wavelengths, and the noise reduction effect is effectively improved.
It should be noted that, the noise reduction structure may further include a third unit block, a fourth unit block, and a fifth unit block or more, and the sizes of the core grid units of a plurality of different unit blocks are all different, so that noise of different frequencies and wavelengths can be subjected to noise reduction processing.
According to the technical scheme of the embodiment, the noise reduction liners with different dimensions are formed by combining the first unit block 20 and the second unit block 30, so that noises with different frequencies can be effectively absorbed. The first unit block 20 and the second unit block 30 are flexible to assemble, and convenient to install, maintain and replace.
As shown in fig. 1, 6 and 7, in the present embodiment, the base body 10 includes a cylindrical body, the outer diameter of the base body 10 is 1000 mm, the plurality of first unit blocks 20 are arranged along the circumferential direction of the base body 10, the plurality of second unit blocks 30 are arranged along the circumferential direction of the base body 10, and the first unit blocks 20 and the second unit blocks 30 are arranged at intervals along the axial direction of the base body 10. The arrangement mode is simple, and different noises can be subjected to noise reduction treatment in a targeted manner. Therefore, the noise reduction effect is obvious. The specific arrangement may be such that the first unit blocks 20 and the second unit blocks 30 are arranged at intervals, or the second unit blocks 30 and the first unit blocks 20 are arranged at intervals, or the first unit blocks 20 and the second unit blocks 30 are arranged at intervals. In an embodiment not shown in the drawings, the first unit block 20 and the second unit block 30 may also be disposed at intervals along the axial direction of the cylinder.
As shown in fig. 1 to 7, in the present embodiment, the size of the first unit block 20 is greater than or equal to the size of the second unit block 30; the substrate 10 includes a flat surface or a curved surface. Specifically, the first unit piece 20 has a size equal to that of the second unit piece 30, and the base 10 has a curved surface. The arrangement enables the noise reduction structure to have different shapes so as to be suitable for different occasions to use.
As shown in fig. 2 to 5, in the present embodiment, the first unit block 20 further includes a first arc-shaped plate 22 and a second arc-shaped plate 23, the first core unit 21 is located between the first arc-shaped plate 22 and the second arc-shaped plate 23, the first arc-shaped plate 22 is located on the outer side of the second arc-shaped plate 23, the second unit block 30 further includes a third arc-shaped plate 32 and a fourth arc-shaped plate 33, the second core unit 31 is located between the third arc-shaped plate 32 and the fourth arc-shaped plate 33, and the third arc-shaped plate 32 is located on the outer side of the fourth arc-shaped plate 33. The first arc-shaped plate body 22 and the second arc-shaped plate body 23 can improve the structural strength of the first unit block 20, and can make the first honeycomb structure maintain stable position, thereby indirectly ensuring the noise reduction effect. Likewise, the third arc plate 32 and the fourth arc plate 33 can improve the structural strength of the second unit block 30, and can stabilize the position of the second honeycomb structure, thereby indirectly ensuring the noise reduction effect.
As shown in fig. 3 and 5, in the present embodiment, the first unit block 20 further includes a fifth arc-shaped plate 24, the fifth arc-shaped plate 24 is located inside the first core grid unit 21, the fifth arc-shaped plate 24 is spaced apart from the first arc-shaped plate 22 and the second arc-shaped plate 23, the second unit block 30 further includes a sixth arc-shaped plate 34, the sixth arc-shaped plate 34 is located inside the second core grid unit 31, and the sixth arc-shaped plate 34 is spaced apart from the third arc-shaped plate 32 and the fourth arc-shaped plate 33. The above-described arrangement of the fifth and sixth arc plates 24 and 34 can further secure the structural strength of the first and second unit blocks 20 and 30. Moreover, the fifth arc-shaped plate body 24 and the sixth arc-shaped plate body 34 enable the first unit block 20 and the second unit block 30 to be of a multilayer structure, so that noise elimination of noise of various complicated frequencies in the field can be met.
As shown in fig. 2 to 5, in the present embodiment, the first arc-shaped plate 22, the third arc-shaped plate 32, the fifth arc-shaped plate 24 and the sixth arc-shaped plate 34 are porous plates, and the second arc-shaped plate 23 and the fourth arc-shaped plate 33 are porous plates. The above-described porous plate enables sound waves to penetrate into the first honeycomb structure and the second honeycomb structure. Of course, the second arc-shaped plate body and the fourth arc-shaped plate body can be solid plates. The holes on the perforated plate are regular holes or special-shaped holes, so that the silencing device can be suitable for various frequencies on site.
As shown in fig. 2 to 5, the shape of the wells of the multi-well plate includes one or more of a cross-star shape, a rectangular shape, a circular shape, and an oval shape. The above setting mode can optimize and combine the complex working conditions on site so as to ensure that the noise reduction effect is better. Specifically, in the present embodiment, the shape of the hole in the porous plate is rectangular, and the short side of the rectangle is a circular arc.
As shown in fig. 2 to 5, in the present embodiment, the thickness of each of the first and second unit blocks 20 and 30 is between 10 mm and 200 mm, and the area of the upper surfaces of the first and second unit blocks 20 and 30 is greater than or equal to 400mm2. The thicknesses of the first and second unit blocks 20 and 30 described above enable sound waves to be muffled inside thereof, and specifically, the thicknesses of the first and second unit blocks 20 and 30 are each 100 mm. The areas of the upper surfaces of the first unit piece 20 and the second unit piece 30 are both 900mm2。
As shown in fig. 8 and 9, in the present embodiment, the first reinforcing structure 25 is provided inside the first unit block 20, and the second reinforcing structure 35 is provided inside the second unit block 30. The first and second reinforcing structures 25 and 35 can further improve the structural strength of the first and second unit blocks 20 and 30, and prevent the first and second unit blocks from being deformed to affect the noise reduction effect.
As shown in fig. 8 and 9, in the present embodiment, the first reinforcing structure 25 and the second reinforcing structure 35 are both reinforcing plates, the first reinforcing structure 25 is welded to the first arc-shaped plate body 22 and the second arc-shaped plate body 23, and the second reinforcing structure 35 is welded to the third arc-shaped plate body 32 and the fourth arc-shaped plate body 33. The welding mode is simple, and the connection effect is good. First additional strengthening 25 and second additional strengthening 35 and first arc plate body 22, second arc plate body 23, be connected fixedly between third arc plate body 32 and the fourth arc plate body 33, or first core check unit 21 and second core check unit 31 and first arc plate body 22, second arc plate body 23, third arc plate body 32 and fourth arc plate body 33 are connected through the vacuum brazing technology, guarantee to paste between first core check unit 21 and second core check unit 31 and first arc plate body 22, second arc plate body 23, third arc plate body 32 and the fourth arc plate body 33 tightly.
As shown in fig. 1 to 7, in the present embodiment, the first unit block 20 and the second unit block 30 are welded or bonded to the base body 10, the first arc-shaped plate 22, the second arc-shaped plate 23, and the fifth arc-shaped plate 24 are all welded, bonded, or brazed to the first core grid unit 21, and the third arc-shaped plate 32, the fourth arc-shaped plate 33, and the sixth arc-shaped plate 34 are all welded, bonded, or brazed to the second core grid unit 31. The welding or bonding is simple, which makes it easy to mount the first and second unit blocks 20 and 30, and the above arrangement facilitates the detachment of the first and second unit blocks 20 and 30, thereby enabling the reuse thereof. Specifically, in the present embodiment, the above-described structures are all connected by brazing.
As shown in fig. 1 to 7, in the present embodiment, the base body 10 includes a plurality of annular metal plates 13 extending in the circumferential direction of the cylinder and a plurality of metal plates 12 extending in the axial direction of the cylinder, the plurality of annular metal plates 13 are arranged at intervals, the plurality of metal plates 12 are arranged at intervals, the annular metal plates 13 and the metal plates 12 are arranged crosswise, and two adjacent annular metal plates 13 and two adjacent metal plates 12 together form the installation space 11. The metal plate 12 of the annular metal plate 13 has a simple structure, is convenient to arrange, and the annular metal plate 13 and the metal plate 12 are connected by welding, so that the structure is stable.
The technical scheme of the embodiment is a metal honeycomb sandwich plate composite material consisting of a hexagonal metal honeycomb formed by a metal thin foil strip and a porous plate, and the metal honeycomb sandwich plate composite material can be in a circular or arc-shaped structure. The metal honeycomb sandwich plate structure belongs to composite materials and has the advantages of light weight, high specific strength and excellent mechanical properties. The hexagonal honeycombs which are mutually drawn are like a plurality of small I-shaped beams, and can disperse and bear pressure from all directions, so that the microporous plate is uniformly stressed and has large bearing capacity, but the six sides of the metal honeycombs are drawn into arcs and circles to form saddle shapes, and the saddle shapes need to be repeatedly corrected, so that the processing is difficult, and the processing cost is high. The manufactured circular and arc noise reduction structure is light in weight, good in rigidity, excellent in overall noise reduction performance, free of the addition of other sound absorption materials, capable of absorbing sound and energy, capable of obtaining good noise reduction performance at a low weight cost, stable in structure, safe and reliable. The metal honeycomb sandwich plate structure is the first unit block 20 and the second unit block 30. The connection between the first unit block 20 and the second unit block 30 and the base 10 may be a spot welding connection between the circumferential turns of the first metal honeycomb structure and the circumferential turns of the second metal honeycomb structure and the base 10, a brazing connection, or a bonding connection.
The first honeycomb structure and the second honeycomb structure of the present embodiment are both flexible honeycomb structures, the first core unit 21 and the second core unit 31 are polygonal structures, and the plurality of first core units 21 and the plurality of second core units 31 are combined with each other to form a flexible honeycomb structure. The plurality of first core grid units 21 and the plurality of second core grid units 31 are of an inclined structure, the inclination directions of two adjacent first core grid units 21 and two adjacent second core grid units 31 are opposite in a first direction, the inclination directions of two adjacent first core grid units 21 and two adjacent second core grid units 31 are the same in a second direction, and the first direction is perpendicular to the second direction. In this embodiment, the first direction is a horizontal direction, and the second direction is a vertical direction. Specifically, the polygonal structure includes various structures such as a quadrangle, a hexagon, and the like, as long as it is satisfied that the first core cell unit 21 and the second core cell unit 31 are in the inclined structure. Through setting up first core check unit 21 and second core check unit 31 for setting up to the slope structure, and carry out corresponding arrangement to the slope direction that first core check unit 21 and second core check unit 31 are in first direction and second direction, when flexible honeycomb takes place to bend, first core check unit 21 and second core check unit 31 are the trend that easily produces the folding deformation of slope, first core check unit 21 and second core check unit 31 are for the easy deformation that takes place of atress drawing or compression, it does not only rely on the elasticity of material self to take place the deformation, this flexible honeycomb has extensive flexible ability of stretching, contracting, thereby make this flexible honeycomb easily take place flexible deformation, and then can avoid honeycomb and combined material thereof to produce saddle shape when bending, and reduce the processing cost. By adopting the flexible honeycomb structure provided by the embodiment, the problem that a complex saddle shape is generated in the bending process of a typical multi-curved surface honeycomb sandwich plate structure composite material in the prior art can be solved.
Each of the first core cell unit 21 and the second core cell unit 31 includes a top edge and a bottom edge and two side edges connecting the top edge and the bottom edge. In the first direction, the sides of two adjacent first core cell units 21 and two adjacent second core cell units 31 are connected to each other to connect the first core cell units 21 and the second core cell units 31 on each row of the flexible honeycomb structure. In the second direction, the bottom side of the first core cell unit 21 and the second core cell unit 31 located above and the top side of the first core cell unit 21 and the second core cell unit 31 located below are connected to each other to connect the first core cell unit 21 and the second core cell unit 31 on each column of the flexible honeycomb structure, and both the top side and the bottom side are arranged non-parallel to the first direction. In this embodiment, the first core unit 21 and the second core unit 31 are in a hexagonal structure, and the side lengths of each side of the first core unit 21 and the second core unit 31 are equal, and each side includes two sections connected to each other. In other embodiments, the number of sides of the first core cell unit and the second core cell unit can be adjusted according to the use requirement, and the embodiment is only exemplified by a hexagonal structure. For example, polygonal structures with other numbers of sides such as quadrangles, octagons and the like or special-shaped honeycombs can be arranged. Specifically, in the first direction, the top edges of two adjacent first core cells 21 and two adjacent second core cells 31 are inclined in opposite directions, and in the second direction, the top edges of two adjacent first core cells 21 and two adjacent second core cells 31 are inclined in the same direction, so that when the flexible honeycomb structure is bent, the two adjacent first core cells 21 and two adjacent second core cells 31 are prone to inclined folding deformation.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A noise reducing structure, comprising:
a base body (10), wherein a plurality of installation spaces (11) are arranged on the base body (10);
a plurality of first unit blocks (20), the plurality of first unit blocks (20) being installed in the plurality of installation spaces (11);
a plurality of second unit blocks (30), the plurality of second unit blocks (30) being installed in the plurality of installation spaces (11);
wherein the first unit block (20) and the second unit block (30) are spaced apart, the first unit block (20) includes a plurality of first core cells (21) forming a first honeycomb structure, the second unit block (30) includes a plurality of second core cells (31) forming a second honeycomb structure, and a size of the first core cells (21) is larger than a size of the second core cells (31).
2. The noise reducing structure according to claim 1, characterized in that the base body (10) includes a cylinder, a plurality of the first unit blocks (20) are arranged along a circumferential direction of the base body (10), a plurality of the second unit blocks (30) are arranged along the circumferential direction of the base body (10), and the first unit blocks (20) and the second unit blocks (30) are arranged at intervals along an axial direction of the base body (10).
3. Noise reducing structure according to claim 1, characterized in that the first unit block (20) has a size greater than or equal to the second unit block (30), the base body (10) comprising a plane or a curved surface.
4. The noise reduction structure according to claim 1, wherein the first unit block (20) further includes a first arc-shaped plate body (22) and a second arc-shaped plate body (23), the first core unit (21) is located between the first arc-shaped plate body (22) and the second arc-shaped plate body (23), the first arc-shaped plate body (22) is located at an outer side of the second arc-shaped plate body (23), the second unit block (30) further includes a third arc-shaped plate body (32) and a fourth arc-shaped plate body (33), the second core unit (31) is located between the third arc-shaped plate body (32) and the fourth arc-shaped plate body (33), and the third arc-shaped plate body (32) is located at an outer side of the fourth arc-shaped plate body (33).
5. The noise reduction structure according to claim 4, wherein the first unit block (20) further includes a fifth arc-shaped plate body (24), the fifth arc-shaped plate body (24) is located inside the first core cell unit (21), the fifth arc-shaped plate body (24) is spaced apart from the first arc-shaped plate body (22) and the second arc-shaped plate body (23), the second unit block (30) further includes a sixth arc-shaped plate body (34), the sixth arc-shaped plate body (34) is located inside the second core cell unit (31), and the sixth arc-shaped plate body (34) is spaced apart from the third arc-shaped plate body (32) and the fourth arc-shaped plate body (33).
6. The noise reduction structure according to claim 5, wherein the first arc-shaped plate body (22), the third arc-shaped plate body (32), the fifth arc-shaped plate body (24) and the sixth arc-shaped plate body (34) are porous plates, and the second arc-shaped plate body (23) and the fourth arc-shaped plate body (33) are porous plates or solid plates.
7. The noise reducing structure of claim 6, wherein the shape of the holes in the perforated plate comprises one or more of a cross-star, a rectangle, a circle, and an ellipse.
8. Noise reduction structure according to claim 4, characterized in that the thickness of each of said first (20) and second (30) unit blocks is between 10 and 200 mm, the area of the upper surface of said first (20) and second (30) unit blocks being greater than or equal to 400mm2。
9. The noise reduction structure according to claim 5, wherein the first unit block (20) and the second unit block (30) are welded or bonded to the base body (10), the first arc-shaped plate body (22), the second arc-shaped plate body (23), and the fifth arc-shaped plate body (24) are all bonded or brazed to the first core grid unit (21), and the third arc-shaped plate body (32), the fourth arc-shaped plate body (33), and the sixth arc-shaped plate body (34) are all bonded or brazed to the second core grid unit (31).
10. Noise reducing structure according to claim 2, characterized in that the base body (10) comprises a plurality of annular metal plates (13) extending in the circumferential direction of the cylinder and a plurality of metal plates (12) extending in the axial direction of the cylinder, the plurality of annular metal plates (13) are arranged at intervals, the plurality of metal plates (12) are arranged at intervals, the annular metal plates (13) and the metal plates (12) are arranged crosswise, and two adjacent annular metal plates (13) and two adjacent metal plates (12) together form a mounting space (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286595.1A CN112984768A (en) | 2021-03-17 | 2021-03-17 | Noise reduction structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286595.1A CN112984768A (en) | 2021-03-17 | 2021-03-17 | Noise reduction structure |
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| CN112984768A true CN112984768A (en) | 2021-06-18 |
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| CN202110286595.1A Pending CN112984768A (en) | 2021-03-17 | 2021-03-17 | Noise reduction structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236877A (en) * | 2021-06-24 | 2021-08-10 | 哈尔滨工程大学 | Suppression device for flow-induced noise and vortex-induced noise of marine pipeline |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0636780A1 (en) * | 1993-06-25 | 1995-02-01 | Nordam | Noise suppression liner for jet engines |
| US20040163888A1 (en) * | 2003-02-21 | 2004-08-26 | Johnson Jeffrey Don | Honeycomb core acoustic unit with metallurgically secured deformable septum, and method of manufacture |
| FR2912780A1 (en) * | 2007-02-20 | 2008-08-22 | Airbus France Sas | Acoustic lining i.e. acoustic panel, for nacelle of aircraft, has series of longitudinal bands intersecting series of transversal bands so as to delimit duct between two adjacent longitudinal bands and two adjacent transversal bands |
| CN103561948A (en) * | 2011-06-01 | 2014-02-05 | 埃尔塞乐公司 | Method for manufacturing sound attenuation panel |
| CN103915090A (en) * | 2012-12-31 | 2014-07-09 | 中国科学院声学研究所 | Broadband noise reduction porous-material acoustic liner and equipment |
| US20180058373A1 (en) * | 2016-08-29 | 2018-03-01 | The Boeing Company | Blocker door assembly having a thermoplastic blocker door for use in a turbine engine |
| CN109272980A (en) * | 2018-11-01 | 2019-01-25 | 中国船舶重工集团公司第七〇四研究所 | Soldering type slit honeycomb sound absorption structure |
| US20200339243A1 (en) * | 2018-01-05 | 2020-10-29 | Safran Nacelles | Acoustic treatment structure for an aircraft propulsion unit nacelle |
-
2021
- 2021-03-17 CN CN202110286595.1A patent/CN112984768A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0636780A1 (en) * | 1993-06-25 | 1995-02-01 | Nordam | Noise suppression liner for jet engines |
| US20040163888A1 (en) * | 2003-02-21 | 2004-08-26 | Johnson Jeffrey Don | Honeycomb core acoustic unit with metallurgically secured deformable septum, and method of manufacture |
| FR2912780A1 (en) * | 2007-02-20 | 2008-08-22 | Airbus France Sas | Acoustic lining i.e. acoustic panel, for nacelle of aircraft, has series of longitudinal bands intersecting series of transversal bands so as to delimit duct between two adjacent longitudinal bands and two adjacent transversal bands |
| CN103561948A (en) * | 2011-06-01 | 2014-02-05 | 埃尔塞乐公司 | Method for manufacturing sound attenuation panel |
| CN103915090A (en) * | 2012-12-31 | 2014-07-09 | 中国科学院声学研究所 | Broadband noise reduction porous-material acoustic liner and equipment |
| US20180058373A1 (en) * | 2016-08-29 | 2018-03-01 | The Boeing Company | Blocker door assembly having a thermoplastic blocker door for use in a turbine engine |
| US20200339243A1 (en) * | 2018-01-05 | 2020-10-29 | Safran Nacelles | Acoustic treatment structure for an aircraft propulsion unit nacelle |
| CN109272980A (en) * | 2018-11-01 | 2019-01-25 | 中国船舶重工集团公司第七〇四研究所 | Soldering type slit honeycomb sound absorption structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236877A (en) * | 2021-06-24 | 2021-08-10 | 哈尔滨工程大学 | Suppression device for flow-induced noise and vortex-induced noise of marine pipeline |
| CN113236877B (en) * | 2021-06-24 | 2022-08-02 | 哈尔滨工程大学 | Suppression device for flow-induced noise and vortex-induced noise of marine pipeline |
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