CN114475909A

CN114475909A - Barrier and boats and ships that noise reduction was used

Info

Publication number: CN114475909A
Application number: CN202210161685.2A
Authority: CN
Inventors: 李登华; 黄隽; 薛琪; 高全林
Original assignee: Guangzhou Shipyard International Co Ltd
Current assignee: Guangzhou Shipyard International Co Ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-05-13
Anticipated expiration: 2042-02-22
Also published as: CN114475909B

Abstract

The invention provides a barrier for reducing noise, which comprises a plurality of grid plates, wherein the grid plates are sequentially arranged, flexible strips are arranged between every two adjacent grid plates, and gaps are reserved between the grid plates and the flexible strips; the grid plate is provided with a plurality of pore channels, and porous materials are filled in the pore channels; the invention also provides a ship, which comprises a ship body and the barrier, wherein the ship body is provided with a fan room and a residential work area, the side wall of the fan room is provided with an air opening, and the barrier is fixed on the side wall of the fan room and is positioned in the air opening; the barrier and the ship can effectively reduce the noise of the residential work area.

Description

Barrier and boats and ships that noise reduction was used

Technical Field

The invention relates to the field of ship manufacturing, in particular to a barrier for reducing noise and a ship.

Background

In the prior art, in order to adapt to the arrangement of an engine room hood beside a fan room, a grille of the fan room is generally arranged on the side surface (not the side facing the stern, but the side facing the side of a ship board) of the fan room, so that an air opening is far away from a residential work area of the C deck, and normal work and rest of crews are serious.

In addition, various experiments are required after the ship is constructed and undocked, one of the experiments is noise tests of all areas, the measured decibels are lower than the specification requirements, and some ships cannot pass the noise tests when being unreasonably arranged or slightly poor in sound insulation. The layout of the fan rooms of the prior art vessel is not helpful for passing the test.

Disclosure of Invention

Accordingly, there is a need for a barrier and a vessel that reduces noise in residential and work areas.

In order to solve the technical problem, the barrier for reducing the noise comprises a plurality of grid plates, wherein the grid plates are sequentially arranged, flexible strips are arranged between the adjacent grid plates, and gaps are reserved between the grid plates and the flexible strips; the grid plate is provided with a plurality of pore channels, and porous materials are filled in the pore channels.

Preferably, the vertical distance between adjacent grid plates is smaller than or equal to the width of the grid plates, and the flexible strip is positioned in the middle of the adjacent grid plates and is arranged in parallel with the grid plates.

Preferably, the flexible strip is a canvas strip or a varnished cloth strip or an artificial leather strip or a rubber strip.

Preferably, the grid plate is a hollow metal plate, the pore channels are formed in the side wall of the grid plate, the porous material is filled in the hollow cavity of the metal plate, and the porous material is foamed plastic or expanded perlite products or glass wool or mineral wool.

Preferably, the section of the pore canal is circular, and the diameter of the circular section is 0.5mm-5 mm.

The invention also provides a ship, which comprises a ship body and the barrier, wherein the barrier is arranged on the ship body, the fan room and the residential work area are arranged on the ship body, the side wall of the fan room is provided with an air opening, and the barrier is fixed on the side wall of the fan room and is positioned in the air opening.

Preferably, the air opening is provided with a plurality of, and a plurality of all be located and deviate from one side of living workspace.

Preferably, the number of the fan chambers is four, the four fan chambers are all arranged at the stern, the four fan chambers are arranged diagonally, and the railings of the four fan chambers face the stern.

Preferably, the fan room arrangement comprises a first fan room, a second fan room, a third fan room and a fourth fan room, the first fan room and the second fan room are arranged on a port side, the third fan room and the fourth fan room are arranged on a starboard side, an engine room awning and a ladder way are arranged between the first fan room and the second fan room, and the inner side wall of the engine room awning is bent;

the inside wall includes first inside wall, second inside wall and third inside wall, first inside wall is located the outside of ladder way, the extension line of third inside wall with the ladder way overlaps, the second inside wall is connected first inside wall and third inside wall.

Preferably, the grille of the second fan chamber faces the cabin awning, and an extension line of the first inner side wall intersects with the grille of the second fan chamber.

The barrier and the ship can reduce noise to be transmitted to the living work area to the maximum extent, so that the noise of the living work area is reduced to the minimum, and the working efficiency and living quality of crew are improved; the method is also greatly helpful for various noise tests after the ship is constructed and undocked.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic view of the structure of a noise reduction boom of the present invention;

FIG. 2 is a schematic view of a portion of the noise reduction boom of the present invention;

FIG. 3 is a partial surface view of a grid plate of the present invention;

FIG. 4 is a partial ship layout of the prior art;

FIG. 5 is a partial ship layout of the present invention;

fig. 6 is an enlarged view of a portion a in fig. 5.

In the figure: 10. a hull; 1. a barrier; 11. a grid plate; 12. a flexible strip; 13. a duct; 2. a fan chamber; 21. a first fan chamber; 22. a second fan chamber; 23. a third fan chamber; 24. a fourth fan chamber; 3. a residential work area; 4. a side wall; 5. a ladder way; 6. an inner sidewall; 61. a first inner side wall; 62. a second inner side wall; 63. and a third inner side wall.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, the present invention provides a noise-reducing barrier 1, which includes a plurality of grid plates 11, wherein the plurality of grid plates 11 are sequentially arranged, flexible strips 12 are disposed between adjacent grid plates, and a gap is reserved between the grid plates 11 and the flexible strips 12, so that when flowing gas passes through the flexible strips 12, the flexible strips 12 vibrate to absorb sound waves of low frequencies in medium noise by resonance. The grid plate 11 is provided with a plurality of pore channels 13, porous materials are filled in the pore channels 13, noise enters the porous materials in the pore channels 13 through the grid plate 11, and therefore the sound waves are weakened and absorbed, the maximum effect of the noise is to absorb medium-high frequency sound waves, and the defects of a flexible band are overcome. Therefore, the noise reduction effect is better, the noise of the residential work area is reduced to the minimum, and the working efficiency and the residential quality of crew are improved; the method is also greatly helpful for various noise tests after the ship is constructed and undocked. The porous material herein means a material in a fixed form and having many fine pores inside.

In the preferred embodiment, the vertical distance between adjacent louvers 11 is less than or equal to the width of the louvers 11, and the louvers 11 may cooperate to seal the tuyere. The flexible strip 12 is located in the middle of the adjacent grid 11 and is parallel to the grid 11, and it should be noted that the parallel arrangement is not strictly parallel arrangement, but only about parallel arrangement, that is, the flexible strip 12 is not in contact with the two adjacent grids 11 in the static state.

In the preferred embodiment, the flexible strip 12 is a canvas strip or a varnished cloth strip or a synthetic leather strip or a rubber strip, but may be other similar flexible strips, so long as the flowing air can make it vibrate, which can have the effect of absorbing the medium and low frequency sound waves.

Referring to fig. 2 and 3, in a preferred embodiment, the grid plate 11 is a hollow metal plate, the openings 13 are formed in the side wall of the grid plate 11, the porous material is filled in the hollow cavity of the metal plate, the porous material is a foam plastic or expanded perlite product or glass wool or mineral wool, and similarly, the porous material may be other materials with many pores, as long as the material has many fine pores, which can have a noise reduction effect.

In a preferred embodiment, the section of the duct 13 is circular, the diameter of the circular section being 0.5mm to 5mm, in particular, the diameter of the circular section may be 0.8mm or 1mm or 2mm or 3mm or 4 mm.

The invention also provides a ship, which comprises a ship body 10 and the barrier 1 of any one of the above parts, wherein the ship body 10 is provided with a fan room 2 and a residential work area 3, the side wall 4 of the fan room 2 is provided with an air opening, and the barrier 1 is fixed on the side wall 4 of the fan room 2 and positioned in the air opening, so that the noise near the fan room 2 is reduced.

In a preferred embodiment, the number of tuyeres is provided in plurality, all located at a side facing away from the residential work area 3.

In the preferred embodiment, the side wall 4 of the fan chamber 2 is a double-layer side wall 4, which has a significant noise reduction effect, and the inner-opened fan door is arranged on the two side walls 4. The fan door is made of weatherproof steel and is normally closed when the ship sails normally, and the fan door can only be arranged on the outer side because the surrounding wall space in the cabin awning is reduced, but the fan room 2 door is normally closed and has little influence on noise.

In the preferred embodiment, four fan chambers 2 are arranged at the stern, the four fan chambers 2 are arranged diagonally, the railings 1 of the four fan chambers 2 face the stern, most of the noise of the fan chambers 2 is transmitted from the air inlet, and the air inlet faces the stern, so that the noise in a living and working area is greatly reduced.

In the preferred embodiment, the inner side of the grid plate 11 is higher than the outer side, the flexible strips 12 are also higher than the outer side, the grid plate 11 is arranged in an inclined mode, and the inclined angle of the grid plate 11 can be adjusted.

Referring to fig. 5 and 6, in a preferred embodiment, the fan room arrangement comprises a first fan room 21, a second fan room 22, a third fan room 23 and a fourth fan room 24, the first fan room 21 and the second fan room 22 are arranged on a port side, the third fan room 23 and the fourth fan room 24 are arranged on a starboard side, a cabin awning and a ladder way 5 are arranged between the first fan room 21 and the second fan room 22, and an inner side wall 6 (one side wall close to a center line of a ship body is the inner side wall 6) of the cabin awning is in a bent arrangement.

In a preferred embodiment, the inner sidewall 6 includes a first inner sidewall 616, a second inner sidewall 626 and a third inner sidewall 636, the first inner sidewall 616 is located outside the stairway 5 (the side near the center line of the hull is the inner side, and the side near the side of the ship is the outer side), the extension line of the third inner sidewall 636 overlaps with the stairway 5, and the second inner sidewall 626 connects the first inner sidewall 616 and the third inner sidewall 636.

In the preferred embodiment, the grill of the second fan compartment 22 faces the cabin canopy and the extension of the first interior side wall 616 intersects the grill of the second fan compartment 22. By modifying the cabin roof to a bent shape, space can be left for the grille of the second fan room 22 without affecting the arrangement of the stairway 5.

The noise-reducing arrangement is such that the air discharge grate 1 of the fan room 2 is first directed as far away as possible from the working accommodation area. The arrangement of the cabin awning beside the fan room 2 is optimized, two walls of the port and the starboard are closed to the middle of the ship, a position enough for arranging the air exhaust barrier 1 of the fan room 2 is reserved, the air exhaust barrier 1 faces to the stern as much as possible, but the port has a next layer of ladder way 5, and the wall of the port is folded to have an obvious effect on noise reduction so as not to influence the arrangement of the ladder way 5.

The barrier 1 and the ship can reduce noise to be transmitted to a living working area to the maximum extent, so that the noise of the living working area is reduced to the minimum, and the working efficiency and living quality of crew are improved; the method is also greatly helpful for various noise tests after the ship is constructed and undocked.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. The barrier for reducing noise is characterized by comprising a plurality of grid plates, wherein the grid plates are sequentially arranged, flexible strips are arranged between every two adjacent grid plates, and gaps are reserved between the grid plates and the flexible strips; the grid plate is provided with a plurality of pore channels, and porous materials are filled in the pore channels.

2. The noise-abatement boom of claim 1, wherein the vertical distance between adjacent louvers is less than or equal to the width of said louvers, and said flexible strip is positioned intermediate adjacent louvers and parallel to said louvers.

3. The noise-reducing boom of claim 1, wherein the flexible strip is a canvas strip or a varnished cloth strip or a synthetic leather strip or a rubber strip.

4. The noise-reducing boom of claim 1, wherein said grid is a hollow metal plate, said holes are opened on the side wall of said grid, said porous material is filled in the hollow cavity of said metal plate, said porous material is foam plastic or expanded perlite product or glass wool or mineral wool.

5. The noise-reducing boom of claim 1, wherein the cross-section of said duct is circular, and the diameter of said circular cross-section is 0.5mm-5 mm.

6. A ship, characterized in that, including the barrier of any one of above claims 1-4 and the hull, be provided with fan room and resident workspace on the hull, the lateral wall of fan room has seted up the wind gap, the barrier is fixed on the lateral wall of fan room, and is located in the wind gap.

7. The vessel of claim 6, wherein a plurality of said vents are provided, each of said plurality of vents being located on a side facing away from said occupied work area.

8. The marine vessel of claim 6, wherein there are four fan chambers, four fan chambers all aft, and four fan chambers diagonally, with four fan chamber railings all aft.

9. The marine vessel of claim 6, wherein the fan compartment arrangement includes a first fan compartment, a second fan compartment, a third fan compartment, and a fourth fan compartment, the first and second fan compartments being disposed on a port side, the third and fourth fan compartments being disposed on a starboard side, a canopy and a ladder way being disposed between the first and second fan compartments, an inner sidewall of the canopy being in a bent arrangement;

10. The noise-reducing boom of claim 9, wherein the boom of the second fan compartment faces the cabin canopy and an extension of the first interior side wall intersects the boom of the second fan compartment.