CN107200116A - A kind of big cabin low noise ventilating system of ocean engineering - Google Patents

Abstract

The present invention provides a kind of big cabin low noise ventilating system of ocean engineering.The system, including：Air-supply subsystem and exhaust sub-system；The air-supply subsystem, including：Breeze fan, blast main road and ventilation terminal；The exhaust sub-system, including：Exhaust outlet, air draft main line and exhaust fan.The present invention is by the way that the blast main road and the air draft main line are arranged in the interlayer between cabin ceiling and ship deck, avoid the need for going to bed on the fire prevention soundproof door of accommodation or sanitary unit in crewman and open up ventilation shutter or air port, the sealing of the fire resistant doorsets can so be improved, and then, the fire-protection rating of fire prevention soundproof door can not only be improved, the security of crewman can be ensured, and, the acoustical behavior of fire prevention soundproof door can be made to obtain improving raising, the noise that ventilating system is produced in cabin can be reduced, the privacy of crewman's life rest can be improved.

Description

A low-noise ventilation system for large cabins in marine engineering

technical field

The invention relates to the technical field of ships and marine engineering, in particular to a low-noise ventilation system for large cabins of marine engineering.

Background technique

In recent years, despite the decline in oil prices, with the continuous development of the world economy and technology, the actual demand for energy in human society is still growing. The increasing energy demand and the increasingly scarce land oil resources are still the needs of the world today. An important contradiction that has been faced for a long time.

The Norwegian North Sea is rich in oil and gas resources, but the weather conditions and sea conditions in this sea area are relatively harsh, and the crew members who conduct oil and gas exploration operations need to work and live at sea for a long time, so there are high requirements for the safety and living comfort of marine engineering equipment. Among them, the quietness and stability of the living cabin are important indicators of comfort. For example, for the living cabin, the overall internal noise should be controlled within the range of less than or equal to 45 decibels, while the noise of the ventilation and air-conditioning system is more stringent to 35 decibels. Offshore engineering construction companies and R&D and design departments must also face practical problems such as large ambient temperature differences in living cabins, narrow circulation and ventilation areas, dense sound (vibration) source equipment, limited air duct layout space, and strict sound insulation limits for bulkheads. .

In the prior art, the fire doors of living cabins and sanitary units are designed as part of the airflow passage, so it is necessary to open a vent at a certain part of the fire doors of the living cabin, and a completely open vent will seriously affect the integrity of the outfitting structure. Sound insulation performance, the sound of walking and talking and laughing in the public corridor of the day shift crew can easily be transmitted into the sleeping and living cabins, so the privacy of the crew’s life cannot be guaranteed, and it will also affect the rest of the night shift crew, resulting in low efficiency of the night shift crew.

Contents of the invention

Aiming at the above-mentioned defects in the prior art, the present invention provides a low-noise ventilation system for a large cabin in marine engineering, which can reduce the noise generated by the ventilation system in the cabin.

In the first aspect, the present invention provides a low-noise ventilation system for large cabins in marine engineering, including:

air supply subsystem and air exhaust subsystem;

The air supply subsystem includes: an air supply fan, a main air supply pipeline and an air distributor; the air exhaust subsystem includes: an air exhaust outlet, a main exhaust pipeline and an exhaust fan;

The air supply fan, the main air supply pipeline and the air distributor are sequentially connected; the air outlet, the main exhaust pipeline and the exhaust fan are sequentially connected;

The main air supply pipeline in the air supply subsystem and the main exhaust air pipeline in the air exhaust subsystem are both arranged in the interlayer between the cabin ceiling and the deck of the ship;

The air supply fan is used to collect fresh air, and the fresh air flows to the air distributor through the main air supply pipeline;

The exhaust fan is used to extract the dirty air in the cabin, so that the dirty air is discharged from the cabin through the air outlet and the main exhaust pipeline in sequence.

Optionally, the air supply subsystem further includes: an air supply branch pipeline;

The input end of the air supply branch pipeline is connected to the air supply main pipeline; the output end of the air supply branch pipeline is connected to the air distributor; the fresh air passes through the air supply main pipeline and the The air supply branch pipeline flows to the air distributor.

Optionally, the branch air supply pipeline includes: at least one primary air supply branch pipeline and at least one secondary air supply branch pipeline;

The input end of the primary air supply branch pipeline is connected to the main air supply pipeline; the output end of the primary air supply branch pipeline is connected to the input end of the secondary air supply branch pipeline;

The output end of the secondary air supply branch pipeline is connected with the air distributor.

Optionally, the exhaust subsystem also includes: an exhaust branch pipeline;

The input end of the exhaust branch pipeline is connected to the exhaust outlet; the output end of the exhaust branch pipeline is connected to the main exhaust pipeline; the dirty air passes through the exhaust branch pipeline and the exhaust branch pipeline in turn. The exhaust air main line exhausts the cabin.

Optionally, the exhaust branch pipeline includes: at least one primary exhaust branch pipeline and at least one secondary exhaust branch pipeline;

The input end of the first-level exhaust branch pipeline is connected to the air outlet; the output end of the first-level exhaust branch pipeline is connected to the input end of the second-level exhaust branch pipeline;

The output end of the secondary exhaust branch pipeline is connected to the main exhaust pipeline.

Optionally, the air supply subsystem further includes: an air supply resistive muffler;

The air supply resistive muffler is installed at the junction of the primary air supply branch pipeline and the secondary air supply branch pipeline.

Optionally, the air supply subsystem further includes: an elongated air supply mute box;

The air-supply silent box is installed at the junction of the secondary air-supply branch pipeline and the air distributor;

The quiet air supply box is connected to the output end of the secondary air supply branch pipeline; the air distributor is arranged under the quiet air supply box.

Optionally, the air exhaust subsystem also includes: an air exhaust muffler;

The air exhausting resistive muffler is installed in the main air exhausting pipeline.

Optionally, the air supply subsystem also includes: an air conditioning unit;

The air conditioning unit is connected to the input end of the main air supply pipeline.

Optionally, the air exhaust subsystem also includes: a combined air duct;

The combined air duct is installed on the outside of the cabin;

The input end of the combined air duct is connected to the output end of the exhaust main pipeline, and the output end of the combined air duct is connected to the exhaust fan.

In the present invention, by arranging the main air supply pipeline and the main exhaust air pipeline in the interlayer between the ceiling of the cabin and the deck of the ship, there is no need to set ventilation shutters on the fireproof and sound insulation doors of the crew's sleeping and living cabins or sanitary units. or tuyere, which can improve the sealing performance of the fire door, and then not only can improve the fire protection level of the fire and sound insulation door, can ensure the safety of the crew, but also can improve the acoustic performance of the fire and sound insulation door, and can Reducing the noise generated by the ventilation system in the cabin can improve the privacy of the crew's life and rest.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale.

Fig. 1 shows a schematic diagram of cabin layout of a low-noise ventilation system for large cabins in marine engineering provided by an embodiment of the present invention;

Fig. 2 shows a schematic diagram of a hierarchical control flow chart of a low-noise ventilation system for large cabins in marine engineering provided by an embodiment of the present invention;

Fig. 3 shows a schematic diagram of the airflow organization process of a low-noise ventilation system for large cabins in marine engineering provided by an embodiment of the present invention;

Fig. 4 shows a schematic diagram of a cabin ceiling provided by an embodiment of the present invention.

Among them, 1 indicates the air supply fan; 2 indicates the main air supply line; 3 indicates the air distributor; 4 indicates the exhaust outlet; 5 indicates the main exhaust air line; 6 indicates the exhaust fan; 7 indicates the deck of the ship; Air branch pipeline; 9 indicates secondary air supply branch pipeline; 10 indicates primary exhaust air branch pipeline; 11 indicates secondary exhaust air branch pipeline; 12 indicates air supply resistive muffler; 15 indicates the air-conditioning unit; 16 indicates the integrated air duct; 17 indicates the fire damper; 18 indicates the wind cap; 19 indicates the hull structure bulkhead; 20 indicates the cabin fire door; 21 indicates the air inlet pipe; 22 indicates the vertical reinforcement of the hull structure Material; 23 represents secondary circulation air return duct.

detailed description

Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, so they are only examples, and should not be used to limit the protection scope of the present invention.

It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

The invention provides a low-noise ventilation system for large cabins in ocean engineering. Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Fig. 1 shows that the embodiment of the present invention provides a schematic diagram of cabin layout of a large cabin low-noise ventilation system for marine engineering; Fig. 2 shows a schematic diagram of a hierarchical control flow diagram for a low-noise ventilation system for a large cabin of marine engineering provided by an embodiment of the present invention; Fig. 3 shows a schematic diagram of the airflow organization flow of a low-noise ventilation system for large cabins in marine engineering provided by an embodiment of the present invention. As shown in Fig. 1, Fig. 2 and Fig. 3, a low-noise ventilation system for large cabins in marine engineering provided by the first embodiment of the present invention includes: an air supply subsystem and an air exhaust subsystem.

The air supply subsystem includes: an air supply fan 1, a main air supply line 2 and an air distributor 3; the air exhaust subsystem includes: an air outlet 4, an exhaust main line 5 and an exhaust fan 6; The air supply fan 1, the main air supply pipeline 2 and the air distributor 3 are connected in sequence; the air outlet 4, the main exhaust pipeline 5 and the exhaust fan 6 are connected in sequence; The air supply main pipeline 2 in the air subsystem and the exhaust main pipeline 5 in the air exhaust subsystem are all arranged in the interlayer between the cabin ceiling and the ship deck 7; the air supply fan 1 is used to collect fresh air , the fresh air flows to the air distributor 3 through the main air supply pipeline 2; the exhaust fan 6 is used to extract the dirty air in the cabin, so that the dirty air passes through the air outlet in turn 4 and the exhaust main pipeline 5 discharge the cabin.

By setting the main air supply line 2 and the main exhaust air line 5 in the interlayer between the cabin ceiling and the ship deck 7, there is no need to set up ventilation on the fire and sound insulation doors of the crew's sleeping and living cabins or sanitary units. Shutters or tuyere, which can improve the airtightness of the fire-proof door, so that the fire-proof rating of the fire-proof and sound-proof door can reach A60, which can ensure the safety of the crew; at the same time, the acoustic performance of the fire-proof and sound-proof door can also be improved , so that the sound insulation of the fireproof sound insulation door can reach 40 decibels, which can improve the privacy of the crew's life and rest.

The main noise and vibration source equipment of ventilation and air conditioning systems for ships and ocean engineering include: ventilators, refrigerators, water pumps, air ducts, etc. The noise of the air supply subsystem is mainly composed of the regenerative noise of the air flow, the noise of the air supply fan 1 and the air conditioning unit 15 Mechanical noise and electromagnetic noise are combined and superimposed, and the contribution of aerodynamic noise to sensitive points is often the largest. The noise of the exhaust subsystem is mainly composed of the regenerative noise of the airflow, the mechanical noise of the exhaust fan 6, and the electromagnetic noise, and the contribution of the aerodynamic noise to the sensitive points is often the largest. Wherein, the sensitive point in the air supply subsystem refers to the position of the air supply outlet of the air distributor 3 . The sensitive point of the exhaust subsystem refers to the position of the exhaust outlet 4 . Wherein, the air supply port of the air distributor 3 and the air exhaust port 4 of the air exhaust subsystem are arranged on the ceiling of the cabin, and they are all set towards the room. Within the protection scope of the present invention. As shown in Figure 4.

Wherein, the air distributor 3 may be an electrically heated air distributor 3 .

Wherein, there may be multiple air blowers 1, and multiple air outlets 4 may be provided.

Wherein, the air supply fan 1 is installed on the ship deck 7 and connected with the main air supply pipeline 2 for collecting fresh air so that the fresh air can enter the main air supply pipeline 2 and then flow to the air distributor. 3. The air distributor 3 is installed on the ceiling of the cabin, and the air supply port of the air distributor 3 is set toward the room.

Wherein, the exhaust fan 6 is installed on the deck 7 of the ship, connected with the main exhaust pipeline 5, and provides exhaust power for the exhaust subsystem, and can extract dirty air from the cabin to the outside of the cabin to complete the exhaust. Wherein, the air outlet 4 is arranged indoors, so that dirty air can be discharged out of the cabin through the air outlet 4 .

In a specific embodiment provided by the present invention, the air supply subsystem further includes: an air supply branch pipeline; the input end of the air supply branch pipeline is connected to the air supply main pipeline 2; the air supply branch pipeline The output end of the pipeline is connected to the air distributor 3; the fresh air flows to the air distributor 3 through the main air supply pipeline 2 and the branch air supply pipeline in sequence.

Wherein, the air supply branch pipeline may include multi-stage air supply branch pipelines. For one main air supply pipeline 2, multiple air supply branch pipelines can be set.

Wherein, the main air supply pipeline 2 has a relatively large pipe diameter and a reasonable wind speed and air volume, so that the uniform, stable and smooth air flow cannot produce greater aerodynamic noise, and at the same time, the original mechanical noise and electromagnetic noise energy are in the air supply. Natural propagation attenuation can also be obtained in the main pipeline 2 . By adding the air supply branch pipeline, the energy of mechanical noise and electromagnetic noise can be further attenuated; at the same time, the distance between the sensitive point and the sound source can be increased, which can further reduce the energy of mechanical noise.

In a specific embodiment provided by the present invention, the air supply branch pipeline includes: at least one primary air supply branch pipeline 8 and at least one secondary air supply branch pipeline 9; The input end is connected with the main air supply pipeline 2; the output end of the first-level air supply branch pipeline 8 is connected with the input end of the secondary air supply branch pipeline 9; the output of the secondary air supply branch pipeline 9 The end is connected with the air distributor 3.

The air supply branch pipeline is also installed between the ceiling of the cabin and the deck 7 of the ship. The energy of mechanical noise and electromagnetic noise can be further attenuated by arranging a plurality of primary air supply branch pipelines 8, and by connecting multiple primary air supply branch pipelines 8, the increase in the total cross-sectional area can further reduce the wind speed, In this way, the total noise of the air supply subsystem can be controlled at about 45 decibels; finally, by connecting the secondary air supply branch pipeline 9, the wind speed can be further reduced, making the total noise even lower.

In a specific embodiment provided by the present invention, the exhaust subsystem further includes: an exhaust branch pipeline;

The input end of the exhaust branch pipeline is connected to the exhaust outlet 4; the output end of the exhaust branch pipeline is connected to the exhaust main pipeline 5; the dirty air passes through the exhaust branch pipeline and The exhaust main pipeline 5 discharges the cabin.

The exhaust branch pipeline is also installed between the ceiling of the cabin and the deck 7 of the ship. By installing the exhaust branch pipeline, the wind speed in the pipeline can be reduced, thereby controlling the regenerative noise; at the same time, the distance between the sensitive point and the sound source can be increased, which can further reduce the mechanical noise energy.

In a specific embodiment provided by the present invention, the exhaust branch pipeline includes: at least one primary exhaust branch pipeline 10 and at least one secondary exhaust branch pipeline 11; The input end is connected to the exhaust port 4; the output end of the first-stage exhaust branch pipeline 10 is connected to the input end of the secondary exhaust branch pipeline 11; the output end of the secondary exhaust branch pipeline 11 It is connected with the main exhaust air pipeline 5.

By installing a plurality of primary exhaust branch pipes 10, the wind speed can be reduced, thereby controlling the regenerated noise; at the same time, the distance between the sensitive point and the sound source can be increased to further reduce the mechanical noise energy. By connecting a plurality of secondary exhaust branch pipelines 11, the air flow can be multi-branched, so that the sum of the cross-sectional areas of the multi-channel branches is correspondingly greater than the cross-sectional area of the primary exhaust branch pipeline 10, thereby slowing down the exhaust wind speed , to reduce noise.

In a specific embodiment provided by the present invention, the air supply subsystem further includes: an air supply resistive muffler 12; the air supply resistive muffler 12 is installed between the primary air supply branch pipeline 8 and the secondary The junction of the air supply branch pipeline 9.

Wherein, the inside of the air supply muffler is provided with sound-absorbing materials of different thicknesses, different volumetric densities and different forms. The air supply subsystem can be equipped with a plurality of air supply resistive mufflers 12, which can increase the contact area between the airflow and the sound-absorbing material, and at the same time can control the frictional resistance, local resistance and airflow velocity within a reasonable range, and can increase the amount of noise reduction , to further attenuate the regenerative noise of the airflow passing through the pipeline and the mechanical noise of the blower fan 1 .

In a specific embodiment provided by the present invention, the air supply subsystem further includes: an elongated air supply quiet box 13; the air supply quiet box 13 is installed on the secondary air supply branch pipeline 9 The connection with the air distributor 3; the air supply quiet box 13 is connected to the output end of the secondary air supply branch pipeline 9; the air distributor 3 is arranged under the air supply quiet box 13.

Wherein, the inner wall of the air-supply silent box 13 is coated with sound-absorbing material. The air-supply static box 13 is a link between the secondary air-supply branch pipeline 9 and the air distributor 3. After the low-speed noise airflow from the secondary air-supply branch pipeline 9 enters the air-supply static box 13, it flows in a corner-shaped route. , fully contact with the sound-absorbing material on the inner wall of the air-supply quiet box 13 and absorb sound energy, which can reduce the dynamic pressure and increase the static pressure, and then keep the wind pressure uniform and the airflow stable, preventing or reducing the regeneration noise of the airflow. At the same time, the elongated air-supply silent box 13 can attenuate the sound energy when propagating in the air medium, and can control aerodynamic noise and mechanical noise separately.

In the present invention, the air-supply resistive muffler 12 and the air-supply mute box 13 as well as the primary air-supply branch pipeline 8 and the secondary air-supply branch pipeline 9 can be used simultaneously, so that noise can be reduced to the greatest extent , Control the noise of the air supply subsystem to about 35 decibels.

In a specific embodiment provided by the present invention, the air exhaust subsystem further includes: an air exhaust muffler 14 ; the air exhaust muffler 14 is installed in the main air exhaust pipeline 5 .

By installing the exhaust resistive muffler 14, the mechanical noise of the exhaust fan 6 transmitted upstream through the exhaust main pipeline 5 can be attenuated, further reducing the noise decibels at sensitive points.

In a specific embodiment provided by the present invention, the air supply subsystem further includes: an air conditioning unit 15 ; the air conditioning unit 15 is connected to the input end of the main air supply pipeline 2 .

Wherein, the air-conditioning unit 15 can deliver refrigerated, humidified or heated fresh air to the cabin through the main air supply pipeline 2, so that the crew can enjoy life better.

Wherein, the air conditioner unit 15 is connected to the main air supply pipeline 2 , and the main air supply pipeline 2 may be directly connected to the air distributor 3 , or may be connected to a branch air supply pipeline first, and then connected to the air distributor 3 . All these are within the protection scope of the present invention.

In a specific embodiment provided by the present invention, the exhaust subsystem further includes: a combined air duct 16; the combined air duct 16 is installed outside the cabin; the input end of the combined air duct 16 is connected to The output end of the exhaust main pipeline 5 is connected, and the output end of the combined air duct 16 is connected with the exhaust fan 6 .

Wherein, the marine engineering large cabin is enclosed by a hull structure bulkhead plate 19 and a hull structure deck, and a cabin fire door 20 is arranged on one side thereof. The combined air duct 16 is arranged on the outside of the cabin, and the output end of the combined air duct 16 can be connected with the exhaust fan 6, so that the airflow in the main exhaust pipeline 5 can be guided to the outside of the cabin, and the number of sensitive points and sound sources can be increased. distance to reduce noise.

In the present invention, the exhaust resistive muffler 14, the combined air duct 16, the primary exhaust branch pipeline 10 and the secondary exhaust branch pipeline 11 can be used at the same time, which can attenuate the energy of the mechanical noise from the exhaust fan 6 , the total noise of the exhaust subsystem can be controlled within the range of not more than 35 decibels.

The system may also include: a fire damper 17 and a wind cap 18 .

The fire damper 17 and wind cap 18 can be arranged at the output end of the combined air duct 16 to prevent dangerous accidents from occurring.

The system may also include: a secondary circulation air return duct 23;

The input end of the secondary circulation air return duct 23 is connected to the output end of the combined air duct 16 , and the output end of the secondary circulation air return duct 23 is connected to the air conditioning unit 15 . Outdoor fresh air enters the air conditioning unit 15 through the air inlet pipe 21, and is delivered to the downstream large cabin after being pressurized by the blower fan 1. Wherein, the vertical stiffener 22 of the hull structure is arranged on the inner wall of the large compartment. Part of the air in the exhaust subsystem of the large cabin is discharged into the outdoor atmosphere through the fire damper 17, the exhaust fan 6 and the wind cap 18, and the other part is sent back to the air conditioning unit 15 through the secondary circulation air return pipe 23 to participate in recirculation. In order to reduce energy loss, the air in the room can be recycled.

In the present invention, the noise and vibration source equipment can be installed at a position far away from the living cabin, and connected by pipelines, so as to attenuate the noise energy on the noise transmission path.

The low-noise ventilation system for large cabins in marine engineering of the present invention adopts the airflow organization mode of sending upward and returning upward, and the warm and humid air passes through the following links sequentially from upstream to downstream: external fresh air or secondary circulating air-air blower 1 and air conditioning unit 15-main air supply road 2-first-level air supply branch pipeline 8-secondary air supply branch pipeline 9-air supply resistive muffler 12-air supply quiet speaker 13-multiple air supply outlet electric heating air distributor 3-even interior of the living cabin Circulation-exhaust outlet 4-first-level exhaust branch pipeline 10-secondary exhaust branch pipeline 11-exhaust main pipeline 5-exhaust resistive muffler 14-combined air duct 16 or enter the secondary circulation-fire damper 17- Exhaust fan 6-wind cap 18-is exhausted to the outside atmosphere, ending this air circulation.

By designing and using a plurality of primary air supply branch pipelines 8 as a link between the main air supply pipeline 2 and the secondary air supply branch pipeline 9, it is possible to reduce the primary air supply while maintaining a constant flow of air volume. The wind speed and pressure in the branch pipeline 8 can further reduce the airflow regeneration noise in the pipeline.

By designing and using a plurality of secondary air supply branch pipelines 9, as the link between the primary air supply branch pipeline 8 and the air supply quiet box 13 and the air distributor 3, while keeping the supply air volume constant, it can reduce The noise contribution of each secondary air supply branch pipeline 9 to the sensitive point position is to reduce the airflow regeneration noise of a single air duct again by reducing the wind speed and pressure, thereby reducing the total synthetic noise decibel number at the sensitive point position.

By designing and using a plurality of exhaust outlets 4, a plurality of primary exhaust branch pipelines 10, a plurality of secondary exhaust branch pipelines 11, a main exhaust pipeline 5 and an exhaust resistive muffler 14, the airflow of a single exhaust pipeline will The regenerative noise classification is gradually reduced, thereby greatly reducing the noise contribution of the exhaust outlet 4 to the sensitive point position. At the same time, the mechanical noise of the exhaust fan 6 transmitted upstream through the exhaust pipeline is attenuated by designing and using the exhaust resistive muffler 14 , to further reduce the noise decibel number at the sensitive point position.

Through this special pipeline arrangement, the air volume and wind speed at the outlet of a single air distributor 3 can be made small, and the small wind speed will not produce obvious aerodynamic noise. The noise transmitted downstream is also attenuated. The quiet and comfortable working and living environment in the cabin can significantly improve the crew's work efficiency and rest quality; The contribution of the noise at the port 4 to the sensitive point will not be greater than the contribution to the sensitive point at the outlet of the air distributor 3 with multiple air supply ports, and the exhaust fan 6 will not become the main sound source of the cabin, which improves the safety of the crew. quality of rest.

By designing and adopting the airflow organization method of "multi-input and multi-outlet", that is, inside the living cabin, multiple low-noise, warm and humid airflows from the electric heating air distributor 3 are evenly mixed to form a relatively uniform velocity field and temperature field, so that the clean air fills the interior of the living cabin, forming a more comfortable working and living environment for the crew, and then with the continuous flow of gas, the relatively dirty gas produced by human body metabolism is sent to multiple air outlets 4 to complete Uniform circulation inside the living compartment. At the same time, the air noise in the cabin is smaller, and the comfort level of the crew working and living in the cabin is improved.

This special pipeline arrangement can effectively control the wind speed and air volume inside the living cabin of the crew. At the same time, through reasonable airflow organization, the ventilation inside the large cabin of the entire marine engineering has no "dead angle", and the ventilation is evenly distributed and stable. The working and living environment of the crew And the level of comfort is also improved in an all-round way.

The above is a description of an embodiment of a low-noise ventilation system for a large cabin in marine engineering provided by a specific embodiment of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. All of them should be covered by the scope of the claims and description of the present invention.

Claims (10)

1. A low-noise ventilation system for large cabins in marine engineering, comprising: an air supply subsystem and an air exhaust subsystem; The air supply subsystem includes: an air supply fan, a main air supply pipeline and an air distributor; the air exhaust subsystem includes: an air exhaust outlet, a main exhaust pipeline and an exhaust fan; The air supply fan, the main air supply pipeline and the air distributor are sequentially connected; the air outlet, the main exhaust pipeline and the exhaust fan are sequentially connected; The main air supply pipeline in the air supply subsystem and the main exhaust air pipeline in the air exhaust subsystem are both arranged in the interlayer between the cabin ceiling and the deck of the ship; The air supply fan is used to collect fresh air, and the fresh air flows to the air distributor through the main air supply pipeline; The exhaust fan is used to extract the dirty air in the cabin, so that the dirty air is discharged from the cabin through the air outlet and the main exhaust pipeline in sequence. 2. The low-noise ventilation system for large cabins in marine engineering according to claim 1, wherein the air supply subsystem further comprises: an air supply branch pipeline; The input end of the air supply branch pipeline is connected to the air supply main pipeline; the output end of the air supply branch pipeline is connected to the air distributor; the fresh air passes through the air supply main pipeline and the The air supply branch pipeline flows to the air distributor. 3. The low-noise ventilation system for large cabins in marine engineering according to claim 2, wherein the air supply branch pipeline includes: at least one primary air supply branch pipeline and at least one secondary air supply branch pipeline; The input end of the primary air supply branch pipeline is connected to the main air supply pipeline; the output end of the primary air supply branch pipeline is connected to the input end of the secondary air supply branch pipeline; The output end of the secondary air supply branch pipeline is connected with the air distributor. 4. The low-noise ventilation system for large cabins in marine engineering according to claim 1, wherein the exhaust subsystem further comprises: an exhaust branch pipeline; The input end of the exhaust branch pipeline is connected to the exhaust outlet; the output end of the exhaust branch pipeline is connected to the main exhaust pipeline; the dirty air passes through the exhaust branch pipeline and the exhaust branch pipeline in turn. The exhaust air main line exhausts the cabin. 5. The low-noise ventilation system for large cabins in marine engineering according to claim 4, wherein the exhaust branch pipeline includes: at least one primary exhaust branch pipeline and at least one secondary exhaust branch pipeline; The input end of the first-level exhaust branch pipeline is connected to the air outlet; the output end of the first-level exhaust branch pipeline is connected to the input end of the second-level exhaust branch pipeline; The output end of the secondary exhaust branch pipeline is connected to the main exhaust pipeline. 6. The low-noise ventilation system for large cabins in marine engineering according to claim 3, wherein the air supply subsystem further comprises: an air supply resistive muffler; The air supply resistive muffler is installed at the junction of the primary air supply branch pipeline and the secondary air supply branch pipeline. 7. The low-noise ventilation system for large cabins in marine engineering according to claim 3, wherein the air supply subsystem further comprises: a long-strip type air supply mute box; The air-supply silent box is installed at the junction of the secondary air-supply branch pipeline and the air distributor; The quiet air supply box is connected to the output end of the secondary air supply branch pipeline; the air distributor is arranged under the quiet air supply box. 8. The low-noise ventilation system for large cabins in marine engineering according to claim 1, wherein the air exhaust subsystem further comprises: an air exhaust resistive muffler; The air exhausting resistive muffler is installed in the main air exhausting pipeline. 9. The low-noise ventilation system for large cabins in marine engineering according to claim 1, wherein the air supply subsystem further comprises: an air conditioning unit; The air conditioning unit is connected to the input end of the main air supply pipeline. 10. The low-noise ventilation system for large cabins in marine engineering according to claim 1, wherein the air exhaust subsystem further comprises: combined air ducts; The combined air duct is installed on the outside of the cabin; The input end of the combined air duct is connected to the output end of the exhaust main pipeline, and the output end of the combined air duct is connected to the exhaust fan.