Ship noise source discretization noise control method

Abstract

The invention discloses a ship noise source discretization noise control method, and belongs to the technical field of noise control. According to the method, a larboard or starboard noise source discretization device is adopted for independent control, the noise source discretization device is divided into a lower-layer mechanism and an upper-layer mechanism, and the lower-layer mechanism and the upper-layer mechanism on the same board are independently controlled. The noise source discretization is started from the noise source, and the noise influence of the high noise source on the cabin of the residential area is eliminated on the premise of ensuring that the exhaust air rate of each sanitary place is not changed. Exhaust air of sanitary places of every two layers of deck cabins is combined together and is exhausted through a small pipeline fan; the noise level of the pipeline fan is generally 45-55 decibels and is much smaller than 75-110 decibels of an axial flow type large fan, and the pipeline fan can be arranged in a corridor or a storage room of a residential area and has little influence on a cabin of the residential area. According to the method, the influence of the exhaust fan on the internal noise of the cabin of the residential area is eliminated, the noise level is effectively reduced, and the comfort of cabin living is greatly improved.

Description

Technical Field

[0001] The invention relates to a method for controlling ship noise source discretization noise, and belongs to the technical field of noise control. Background Art

[0002] On ships, strong noise can harm the physical and mental health of crew members, affect their work, and lead to work errors that endanger the safe operation of the ship and cause safety accidents. Therefore, the noise level in the cabins of the ship's living area plays a vital role in the rest and recovery of the crew. However, the exhaust fans around the ship's living area are one of the main noise sources on the ship and are very close to the living quarters, especially the exhaust fans in the sanitary quarters. Basically, the exhaust of all sanitary quarters in the ship's living area is combined into 1 to 2 main pipes through the exhaust branch pipes, and then an exhaust fan is set at the end of the main pipe, and mechanical exhaust is achieved through the fan to achieve the purpose of exhaust. The exhaust volume and power of this type of exhaust fan are relatively large, the noise is very high, and this type of fan is always in the on state, near the cabins in the living area, which seriously affects the rest of the crew.

[0003] In the existing exhaust system, the exhaust air from the sanitary places of many cabins is combined together and mechanically exhausted through the exhaust main pipe. The large exhaust volume leads to a high power of the exhaust fan. The selected exhaust fan model is large. The air noise sound power of this type of axial flow exhaust fan is relatively large, and the noise level is between 75 and 110 decibels. This decibel range is near the busy streets in the city or in the factory workshop. The sound may be in this range. Being in this environment for a long time may make people feel a little irritable, and if there are no protective measures, it may cause certain damage to hearing. 75 to 110 decibels is a high noise source, and it is very close to the living cabin, resulting in a high noise level in the cabin, which is difficult to meet regulatory requirements and has a serious impact on the crew's rest. Summary of the invention

[0004] To solve the above problems, the present invention adopts a discretized noise control method for ship noise sources, which effectively solves the problem of high noise sources and effectively controls the noise level in the living cabin at a low level, creating a quiet rest environment for the crew and improving their physical and mental health.

[0005] The technical means adopted by the present invention are as follows: a ship noise source discretization noise control method, a port or starboard cabin and a port or starboard noise source discretization device are symmetrically arranged in the ship, the noise source discretization device is divided into a lower mechanism and an upper mechanism, a first-layer exhaust duct in the lower mechanism is connected to a toilet in a first-layer cabin, a second-layer exhaust duct is connected to a toilet in a second-layer cabin, a lower-layer connecting pipe is used to connect the first-layer exhaust duct and the second-layer exhaust duct, and a lower-layer exhaust fan is arranged on the second-layer exhaust duct;

[0006] The third-layer exhaust duct in the upper structure is connected to the toilet of the third-layer cabin, and the fourth-layer exhaust duct is connected to the toilet of the fourth-layer cabin. The third-layer exhaust duct and the fourth-layer exhaust duct are connected by an upper connecting pipe, and an upper exhaust fan is arranged on the fourth-layer exhaust duct;

[0007] The noise control by discretization of noise sources adopts independent control of the port or starboard noise source discretization device, and the lower mechanism and upper mechanism on the same port are independently controlled.

[0008] Furthermore, the lower exhaust fan and the upper exhaust fan are arranged in a corridor or a storage room of a living area.

[0009] Furthermore, the operating decibels of the lower exhaust fan and the upper exhaust fan are 45 to 55 decibels.

[0010] Furthermore, isolation covers or silencers are provided on the lower exhaust fans and the upper exhaust fans.

[0011] Compared with the prior art, the present invention has the following advantages: the method adopts the port or starboard noise source discretization device for independent control, the noise source discretization device is divided into a lower mechanism and an upper mechanism, and the lower mechanism and the upper mechanism on the same side are independently controlled. The noise source discretization starts from the noise source, and under the premise of ensuring that the exhaust volume of each sanitary place remains unchanged, a method for eliminating the influence of high noise sources on the noise of the cabin in the living area. The exhaust of the sanitary places of each two deck cabins is combined and exhausted through a small duct fan; its noise level is generally between 45 and 55 decibels, which is much smaller than the 75 to 110 decibels of the axial flow large fan, and the duct fan can be arranged in the corridor of the living area or inside the storage room, and the influence on the cabin in the living area is basically negligible. This method eliminates the influence of the exhaust fan on the internal noise of the cabin in the living area, effectively reduces the noise level, and greatly improves the comfort of cabin living. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 Schematic diagram of a discretized noise control method for ship noise sources.

[0014] In the figure: 1. first-floor exhaust duct, 2. second-floor exhaust duct, 3. lower-floor connecting pipe, 4. lower-floor exhaust fan, 5. third-floor exhaust duct, 6. fourth-floor exhaust duct, 7. upper-floor connecting pipe, 8. upper-floor exhaust fan, 9. bathroom. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0018] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0020] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0022] Figure 1 The invention discloses a noise control method for discretizing ship noise sources. A port or starboard cabin and a port or starboard noise source discretization device are symmetrically arranged in the ship. The port noise source discretization device is divided into a lower mechanism and an upper mechanism. In the lower mechanism, a first-layer exhaust duct 1 is connected to a toilet 9 of a first-layer port cabin, a second-layer exhaust duct 2 is connected to a toilet 9 of a second-layer port cabin, a lower-layer connecting pipe 3 is used to connect the first-layer exhaust duct 1 and the second-layer exhaust duct 2, and a lower-layer exhaust fan 4 is arranged on the second-layer exhaust duct 2; in the upper mechanism, a third-layer exhaust duct 3 is connected to a toilet 9 of a third-layer port cabin, a fourth-layer exhaust duct 6 is connected to a toilet 9 of a fourth-layer port cabin, an upper-layer connecting pipe 4 is used to connect the third-layer exhaust duct 5 and the fourth-layer exhaust duct 6, and an upper-layer exhaust fan 8 is arranged on the fourth-layer exhaust duct 6.

[0023] The starboard noise source discretization device is divided into a lower mechanism and an upper mechanism. In the lower mechanism, a first-layer exhaust duct 1 is connected to a toilet 9 of a first-layer starboard cabin, a second-layer exhaust duct 2 is connected to a toilet 9 of a second-layer starboard cabin, a lower-layer connecting pipe 3 is used to connect the first-layer exhaust duct 1 and the second-layer exhaust duct 2, and a lower-layer exhaust fan 4 is arranged on the second-layer exhaust duct 2; in the upper mechanism, a third-layer exhaust duct 3 is connected to a toilet 9 of a third-layer starboard cabin, a fourth-layer exhaust duct 6 is connected to a toilet 9 of a fourth-layer starboard cabin, an upper-layer connecting pipe 4 is used to connect the third-layer exhaust duct 5 and the fourth-layer exhaust duct 6, and an upper-layer exhaust fan 8 is arranged on the fourth-layer exhaust duct 6.

[0024] The noise control by discretization of noise sources adopts independent control of the port or starboard noise source discretization device, and the lower mechanism and upper mechanism on the same port are independently controlled.

[0025] As a specific implementation, the lower exhaust fan 4 and the upper exhaust fan 8 are arranged in the corridor or storage room of the living area.

[0026] As a specific implementation, the operating decibels of the lower exhaust fan 4 and the upper exhaust fan 8 are 45 to 55 decibels.

[0027] As a specific implementation, isolation covers or silencers are provided on the lower exhaust fan 4 and the upper exhaust fan 8.

[0028] The present invention discretizes the noise source and starts from the noise source. It is a method to set multiple small duct exhaust fans on the exhaust valve to eliminate the influence of high noise sources on the cabin noise in the living area under the premise of ensuring that the exhaust volume of each sanitary place remains unchanged. The exhaust of the sanitary places in the cabins of every two decks is combined and exhausted through a small duct fan. The noise level of the small duct fan is generally between 45 and 55 decibels, which is much smaller than the 75 to 110 decibels of the axial flow large fan, and the duct fan can be arranged in the corridor of the living area or inside the storage room, and the influence on the cabin in the living area is basically negligible.

[0029] Through this type of noise source discretization method, the influence of the exhaust fan on the internal noise of the living cabin is eliminated, the noise level is effectively reduced, and the comfort of cabin living is greatly improved.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling ship noise source discretization noise, characterized in that: A port or starboard cabin and a port or starboard noise source discretization device are symmetrically arranged in the ship, the noise source discretization device is divided into a lower structure and an upper structure, the first-layer exhaust pipe (1) of the lower structure is connected to a toilet (9) of the first-layer cabin, the second-layer exhaust pipe (2) is connected to the toilet (9) of the second-layer cabin, the first-layer exhaust pipe (1) and the second-layer exhaust pipe (2) are connected by a lower-layer connecting pipe (3), and a lower-layer exhaust fan (4) is arranged on the second-layer exhaust pipe (2); The third-layer exhaust duct (3) in the upper structure is connected to the toilet (9) of the third-layer cabin, the fourth-layer exhaust duct (6) is connected to the toilet (9) of the fourth-layer cabin, the third-layer exhaust duct (5) and the fourth-layer exhaust duct (6) are connected by an upper connecting pipe (4), and an upper exhaust fan (8) is arranged on the fourth-layer exhaust duct (6); The noise control by discretization of noise sources adopts independent control of the port or starboard noise source discretization device, and the lower mechanism and upper mechanism on the same port are independently controlled.

2. A method for controlling ship noise source discretization according to claim 1, characterized in that: The lower exhaust fan (4) and the upper exhaust fan (8) are arranged in a corridor or a storage room of a living area.

3. A method for controlling ship noise source discretization according to claim 1, characterized in that: The operating decibels of the lower exhaust fan (4) and the upper exhaust fan (8) are 45 to 55 decibels.

4. A method for controlling ship noise source discretization according to claim 1, characterized in that: Isolation covers or silencers are provided on the lower exhaust fan (4) and the upper exhaust fan (8).

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