CN212047850U - Noise reduction hood for cabin fan - Google Patents
Noise reduction hood for cabin fan Download PDFInfo
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- CN212047850U CN212047850U CN202020406283.0U CN202020406283U CN212047850U CN 212047850 U CN212047850 U CN 212047850U CN 202020406283 U CN202020406283 U CN 202020406283U CN 212047850 U CN212047850 U CN 212047850U
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- air duct
- silencing
- wall
- hood
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Abstract
The invention discloses a silencing hood for a cabin fan, which comprises a wind barrel, wherein a vertical cylindrical wind barrel surrounding plate is arranged outside the wind barrel; the bottom end of the air duct coaming is connected to the outer wall of the air duct through an annular steel wire mesh; a closed top cover plate is connected from the top end of the air duct coaming; a guide plate is connected below the central area of the top cover plate, and the guide plate and the top cover plate are intersected to form a circular boundary; the inner surface of the wind barrel coaming, the lower surface of the top cover plate positioned outside the circular boundary line and the lower surface of the guide plate form a guide inner wall; a silencing material is laid on the inner diversion wall, and a silencing orifice plate is closely attached to the silencing material; the outer surface of the air duct is welded with a horizontal supporting plate, the horizontal supporting plate is connected to a vertical supporting plate, and the vertical supporting plate is welded on the inner surface of the air duct coaming and the lower surface of a top cover plate at the periphery of the circular boundary; the invention can reduce the noise and wind noise generated by vibration when the cabin fan works.
Description
Technical Field
The invention relates to a wind cap for a ship, in particular to a silencing wind cap arranged at a ventilation inlet of a cabin fan of the ship.
Background
The wind caps are the main devices used for ventilation in the ship industry, generally, the number of the wind caps applied to each ship is large, and the wind caps are also arranged in a cabin stern building C deck area, so that noise and wind noise generated by vibration when a cabin fan works in the area are large, and crews in the area are interfered in work and life.
Disclosure of Invention
The invention aims to provide a silencing hood for a cabin fan, so as to reduce noise and wind noise generated by vibration when the cabin fan works.
In order to achieve the purpose, the invention adopts the following technical scheme:
a noise reduction hood for a cabin fan comprises a vertical air duct, the bottom of the vertical air duct is connected to a first flange, a vertical cylindrical air duct surrounding plate is wound on the outer ring of the air duct, and the central axis of the air duct surrounding plate is superposed with the central axis of the air duct;
the bottom end of the air duct coaming is higher than that of the air duct; the bottom end of the air duct coaming is connected to the outer wall of the air duct through an annular steel wire mesh; the inner circle of the steel wire mesh is the outer circle of the air duct, and the outer circle of the steel wire mesh is the circle formed at the bottom of the air duct coaming;
a closed top cover plate is connected from the top end of the air duct coaming inwards and upwards in an inclined manner; a guide plate which is concave downwards is connected below the central area of the top cover plate, and the guide plate and the top cover plate are intersected to form a circular boundary;
the inner surface of the wind barrel coaming plate, the lower surface of the top cover plate positioned outside the circular boundary line and the lower surface of the guide plate form a flow guide inner wall of the wind cap; the sound-deadening material with uniform thickness is laid on the flow guide inner wall, and the sound-deadening material is provided with a sound-deadening pore plate in a close fit manner on one side deviating from the flow guide inner wall; the silencing hole plate is connected and fastened with the inner wall of the flow guide through a fastening piece;
the outer surface welding of dryer has horizontal support plate, and horizontal support plate connects in vertical support plate, and vertical support plate welds in the internal surface of dryer bounding wall and the lower surface of the peripheral lamina tecti of circular boundary.
Preferably, the horizontal support plate and the vertical support plate are connected with a nut through a bolt.
Preferably, a reinforcing rib plate is connected between the guide plate and the vertical support plate.
Preferably, the lower part of the outer wall of the air duct coaming is connected with a horizontal annular guide groove in a surrounding manner, and the guide groove is provided with a water outlet.
Preferably, a drain pipe is connected below the drain port, and the bottom of the drain pipe is connected with a second flange.
Preferably, a right-angle-shaped angle steel is arranged between the flow guide inner wall and the silencing hole plate, one steel plate of the angle steel is perpendicularly connected to the flow guide inner wall and supported through a toggle plate, and the other steel plate of the angle steel is parallelly attached to one side, facing the flow guide inner wall, of the silencing hole plate and is fixed on the silencing hole plate through a bolt and a nut.
Preferably, the horizontal support plate, the vertical support plate and the reinforcing rib plate which are connected with each other form a group of reinforcing group plates, and the horizontal support plate, the vertical support plate and the reinforcing rib plate in each group of reinforcing group plates are all located on the same plane.
Preferably, the plane of each group of reinforcing plates passes through the central axis of the air duct.
Preferably, there are six sets of reinforcement panels; the included angles of the two adjacent groups of reinforcing plates relative to the central axis are both 60 degrees.
Preferably, the upper surface of the top cover plate is connected with a lifting lug.
The invention has the advantages that the wind cylinder is connected with the ventilation inlet of the cabin fan through the first flange, so that wind can be guided into the wind cap from the steel wire mesh and guided into the wind cylinder through the flow guide inner wall so as to be guided into the fan; and the slope design of lamina tecti and the cyclic annular design of guiding gutter can also collect the rainwater that flows down from the hood and discharge, has prevented because of the work of fan rainwater on with the hood bounding wall inhales the hood inside and cause damage and the corrosion of hood and fan.
Drawings
FIG. 1 is a top plan view of the acoustic hood of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the connection between the silencing orifice plate and the inner wall of the flow guide of the silencing hood of the present invention;
fig. 4 is a schematic view of the circular opening of the sound-damping orifice plate of the present invention.
In the figure, the air duct comprises a first flange 1, a second flange 2, an air duct body 3, a steel wire mesh 4, a diversion trench 41, a drain pipe 42, a second flange 5, an air duct coaming 6, a silencing pore plate 7, a silencing material 8, a vertical supporting plate 9, a top cover plate 91, a diversion plate 92, a lifting lug 93, a circular dividing line 10, a reinforcing rib plate 11, a horizontal supporting plate 12, angle steel 13, a toggle plate 14 and a reinforcing plate group.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 4, the silencing hood for a cabin blower of the present invention includes a vertical wind tunnel 2 having a bottom connected to a first flange 1, a vertical cylindrical wind tunnel enclosure 5 surrounding the wind tunnel 2, and a central axis of the wind tunnel enclosure 5 coinciding with a central axis of the wind tunnel 2;
the bottom end of the air duct coaming 5 is higher than the bottom end of the air duct 2; the bottom end of the air duct coaming 5 is connected with the outer wall of the air duct 2 through an annular steel wire mesh 3; the inner circle of the steel wire mesh 3 is the outer circle of the air duct 2, and the outer circle of the steel wire mesh 3 is the circle formed by the bottom of the air duct enclosure plate 5;
a closed top cover plate 9 is connected from the top end of the air duct bounding wall 5 inwards and upwards in an inclined way; a guide plate 91 which is concave downwards is connected below the central area of the top cover plate 9, and the guide plate 91 and the top cover plate 9 are intersected to form a circular boundary 93;
the inner surface of the wind barrel surrounding plate 5, the lower surface of the top cover plate 9 positioned outside the circular boundary 93 and the lower surface of the guide plate 91 form the flow guide inner wall of the wind cap; a silencing material 7 (which can be glass wool with a single-side coated with aluminum foil glass fiber cloth) with uniform thickness is laid on the flow guide inner wall, and a silencing orifice plate 6 (with a circular opening, as shown in fig. 4) is arranged on one side of the silencing material 7, which is far away from the flow guide inner wall, in a close fit manner; the silencing orifice plate 6 is connected and fastened with the inner wall of the flow guide through a fastening piece;
the outer surface welding of dryer 2 has horizontal support plate 11, and horizontal support plate 11 is connected in vertical support plate 8, and vertical support plate 8 welds in the internal surface of dryer bounding wall 5 and the lower surface of the peripheral lamina tecti 9 of circular boundary 93.
The horizontal support plate 11 and the vertical support plate 8 are connected with nuts through bolts.
A reinforcing rib plate 10 is connected between the guide plate 91 and the vertical support plate 8.
The lower part of the outer wall of the wind barrel coaming 5 is connected with a horizontal annular diversion trench 4 in a surrounding way, and a water outlet is formed in the diversion trench 4. A drain pipe 41 is connected below the drain port, and a second flange 42 is connected to the bottom of the drain pipe 41. The second flange 42 may be used to connect piping or compartments specifically for draining water.
A right-angle-shaped angle steel 12 is arranged between the flow guide inner wall and the silencing hole plate 6, one steel plate of the angle steel 12 is vertically connected to the flow guide inner wall and supported by a toggle plate 13, and the other steel plate of the angle steel 12 is parallelly attached to one side, facing the flow guide inner wall, of the silencing hole plate 6 and is fixed on the silencing hole plate 6 through bolts and nuts.
The horizontal supporting plates 11, the vertical supporting plates 8 and the reinforcing rib plates 10 which are connected with each other form a group of reinforcing plate groups 14, and the horizontal supporting plates 11, the vertical supporting plates 8 and the reinforcing rib plates 10 in each group of reinforcing plate groups 14 are all located on the same plane. The plane of each group of reinforcing plates 14 passes through the central axis of the air duct 2. There are six sets of reinforcement panel 14; the angles of the two adjacent groups of reinforcing plates 14 relative to the central axis are both 60 degrees.
The upper surface of the top cover plate 9 is connected with a lifting lug 92 so as to be convenient for lifting the silencing hood of the invention.
When the wind-driven generator is used, the wind cylinder 2 is connected to a ventilation inlet of a fan of a cabin through the first flange 1, so that wind can be guided into the wind cap from the steel wire mesh 3 and guided into the wind cylinder 2 through the flow guide inner wall so as to be guided into the fan, and due to the silencing of the silencing material 7 and the reinforcement of the reinforcement plate assembly 14, the noise caused by the vibration of the wind and the wind cap can be greatly reduced; and the slope design of lamina tecti 9 and the cyclic annular design of guiding gutter 4 can also collect the rainwater that flows down from the hood and discharge, have prevented because of the work of fan inhales the inside damage and the corrosion that cause hood and fan of the rainwater on the hood bounding wall 5 into the hood.
Because the silencing hood for the engine room fan is arranged on a C deck of a stern building of the engine room and is higher than a main deck, sea waves are difficult to reach the area, and the hood does not need a weather tight cover, so that an opening and closing device does not exist. The effect of ventilating and making an uproar can be reached after the installation of whole for cabin fan amortization hood, need not to operate separately.
When the silencing hood for the cabin fan is used, the steel wire mesh 3 is inevitably corroded and damaged due to long-term exposure, and needs to be replaced in time for better use. The steel wire net 3 is divided into a rat-proof net, an insect-proof net and a fire-proof net, and is replaced according to specific actual requirements. In order to facilitate maintenance and repair, the steel wire mesh 3 is fixed below the hood enclosing plate 5 through bolts, the bolts are detached during replacement, new steel wire mesh 3 is replaced, and then the bolts are fastened.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The silencing hood for the cabin fan is characterized by comprising a vertical air duct (2) with the bottom connected to a first flange (1), wherein a vertical cylindrical air duct surrounding plate (5) is wound outside the air duct (2), and the central axis of the air duct surrounding plate (5) is superposed with the central axis of the air duct (2);
the bottom end of the air duct coaming (5) is higher than the bottom end of the air duct (2); the bottom end of the air duct coaming (5) is connected to the outer wall of the air duct (2) through an annular steel wire mesh (3); the inner circle of the steel wire mesh (3) is the outer circle of the air duct (2), and the outer circle of the steel wire mesh (3) is the circle formed at the bottom of the air duct enclosure plate (5);
a closed top cover plate (9) is connected from the top end of the air duct coaming (5) inwards and upwards in an inclined manner; a guide plate (91) which is concave downwards is connected below the central area of the top cover plate (9), and the guide plate (91) and the top cover plate (9) are intersected to form a circular boundary (93);
the inner surface of the air duct coaming (5), the lower surface of the top cover plate (9) outside the circular boundary (93) and the lower surface of the guide plate (91) form the flow guide inner wall of the air duct cap; a silencing material (7) with uniform thickness is laid on the flow guide inner wall, and a silencing orifice plate (6) is arranged on one side, away from the flow guide inner wall, of the silencing material (7) in a close fit manner; the silencing hole plate (6) is connected and fastened with the flow guide inner wall through a fastening piece;
the outer surface welding of dryer (2) has horizontal support plate (11), horizontal support plate (11) are connected in vertical support plate (8), vertical support plate (8) weld in the internal surface of dryer bounding wall (5) and circular boundary (93) outlying the lower surface of lamina tecti (9).
2. The acoustic hood for a nacelle blower according to claim 1, wherein the horizontal support plate (11) and the vertical support plate (8) are connected by a bolt and a nut.
3. A silencing hood for a nacelle blower according to claim 1, characterized in that a reinforcing rib plate (10) is connected between the deflector (91) and the vertical support plate (8).
4. The silencing hood for the nacelle fan as recited in claim 1, wherein a horizontal annular guiding gutter (4) is connected to the lower portion of the outer wall of the wind tunnel enclosure (5) in a surrounding manner, and the guiding gutter (4) is provided with a water outlet.
5. A silencing hood for a nacelle fan according to claim 4, wherein a drain pipe (41) is connected below the drain opening, and a second flange (42) is connected to the bottom of the drain pipe (41).
6. The silencing hood for the nacelle fan as claimed in claim 1, wherein a right-angle-shaped angle steel (12) is disposed between the flow guide inner wall and the silencing orifice plate (6), one steel plate of the angle steel (12) is perpendicularly connected to the flow guide inner wall and supported by a toggle plate (13), and the other steel plate of the angle steel (12) is parallelly attached to one side of the silencing orifice plate (6) facing the flow guide inner wall and fixed to the silencing orifice plate (6) by bolts and nuts.
7. A noise attenuation hood for a nacelle blower according to claim 3, wherein the horizontal support plate (11), the vertical support plate (8) and the reinforcing plate (10) connected to each other form a group of reinforcing plates (14), and the horizontal support plate (11), the vertical support plate (8) and the reinforcing plate (10) in each group of reinforcing plates (14) are all located on the same plane.
8. A silencing hood for a nacelle blower according to claim 7, characterized in that each group of said reinforcing plates (14) is located in a plane passing through the central axis of said wind tunnel (2).
9. A silencer cowl for a nacelle fan according to claim 8, characterized in that there are six groups of said reinforcing group plates (14); the included angles of the two adjacent groups of the reinforcing group plates (14) relative to the central axis are both 60 degrees.
10. A noise attenuation hood for a nacelle blower according to claim 1, wherein a lifting lug (92) is attached to an upper surface of the ceiling plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406283.0U CN212047850U (en) | 2020-03-26 | 2020-03-26 | Noise reduction hood for cabin fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406283.0U CN212047850U (en) | 2020-03-26 | 2020-03-26 | Noise reduction hood for cabin fan |
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| Publication Number | Publication Date |
|---|---|
| CN212047850U true CN212047850U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020406283.0U Active CN212047850U (en) | 2020-03-26 | 2020-03-26 | Noise reduction hood for cabin fan |
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| Country | Link |
|---|---|
| CN (1) | CN212047850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071651A (en) * | 2021-04-30 | 2021-07-06 | 江南造船(集团)有限责任公司 | Ship ventilation system |
-
2020
- 2020-03-26 CN CN202020406283.0U patent/CN212047850U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071651A (en) * | 2021-04-30 | 2021-07-06 | 江南造船(集团)有限责任公司 | Ship ventilation system |
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