Ship chimney isolation ventilation system

Abstract

The invention provides a ship chimney isolation ventilation system. The ship chimney isolation ventilation system comprises a detection unit, an isolation unit and a control unit. The detection unit is used for obtaining and outputting pollutant concentration data of gas exhausted to an air inlet of the air conditioner fresh air system from a ship chimney. The isolation unit is arranged at a ship chimney, a plurality of flow guide pieces are arranged on the peripheral side of the ship chimney, the flow guide pieces are connected with the ventilator through ventilation pipes, and the angles of the flow guide pieces are adjustable; the control unit is in control connection with the detection unit and the isolation unit. According to the ship chimney gas emission characteristics and the external wind power condition, the flow guiding pieces arranged around the chimney exhaust port are used for guiding the smoke flow direction, an isolation air curtain with the variable area is formed, and smoke is prevented from flowing back to an air inlet of an air conditioner fresh air system.

Description

Technical Field

[0001] The present application relates to the technical field of ship design, and in particular to a ship chimney isolation ventilation system. Background Art

[0002] Ships are vehicles that can navigate or anchor in water for transportation or operations, and they possess varying technical performance, equipment, and structural types depending on their intended use. A ship's chimney refers to the exhaust outlet of the main propulsion equipment or generator. For small and medium-sized ships, it is typically located relatively high amidships to minimize the incomplete combustion of black smoke (hereinafter referred to as flue gas) emitted by the chimney from being drawn into the air intakes of the air conditioning and ventilation systems located at the bow and stern.

[0003] At present, the chimneys of small and medium-sized ships are designed with consideration given to the appearance, center of gravity and stealth of the ship. The height of the chimney cannot be too high, which poses a hidden danger to the quality of fresh air supply to the air-conditioning and ventilation system of the entire ship.

[0004] When a ship is at anchor or docked, and wind is weak or absent, the smoke naturally exhausted from the chimney cannot be directed to the appropriate height or location by external wind. Consequently, the smoke is often drawn into the air conditioning and fresh air system, causing smoke to permeate the entire ship's living quarters. Furthermore, during normal navigation, erratic wind speeds can also cause naturally exhausted smoke to spread to the air inlets of the air conditioning and fresh air system, contaminating the fresh air. Therefore, unorganized natural smoke emissions pose a risk of reducing the quality of the fresh air supply, creating uncertainties that could impact the safety and health of crew members and hinder high-quality operations.

[0005] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the existing technology. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a ship chimney isolation ventilation system, which can solve the problem of flue gas emitted from the chimneys of small and medium-sized ships being sucked into the air conditioning fresh air system.

[0007] The present application provides a ship chimney isolation ventilation system, comprising:

[0008] A detection unit is provided at the air inlet of the air conditioning and fresh air system, and is used to obtain pollutant concentration data of the gas discharged from the ship chimney to the air inlet of the air conditioning and fresh air system, and output the pollutant concentration data;

[0009] An isolation unit is provided at the chimney of the ship, and a plurality of flow guides are provided around the chimney of the ship. The isolation unit also includes a ventilator, which is connected to the plurality of flow guides through ventilation pipes. The airflow generated by the ventilator is output through the flow guides, and the angle of the flow guides is adjustable.

[0010] A control unit is respectively connected to the detection unit and the isolation unit. A pollutant concentration threshold is set in the control unit, and the pollutant concentration data of the detection unit is obtained. The pollutant concentration data is compared with the pollutant concentration threshold. When the pollutant concentration data is greater than or equal to the pollutant concentration threshold, the control unit controls the ventilator of the isolation unit to start, and forms an isolation air curtain through the multiple guide members. The isolation air curtain is used to isolate pollutants discharged from the chimney.

[0011] In one practicable manner, the detection unit includes at least a flue gas sensor, a carbon dioxide sensor, and a carbon monoxide sensor.

[0012] In one practicable manner, the number of the detection units can be configured according to the number of air inlets of the air-conditioning and fresh air system, and the number of the detection units is less than or equal to the number of air inlets of the air-conditioning and fresh air system.

[0013] In one practicable manner, a plurality of the guide members are evenly distributed at the air outlet of the ventilator.

[0014] In one practicable embodiment, the plurality of guide members include at least four groups of guide members, and the four groups of guide members are respectively arranged on the peripheral sides of the air outlet. After the ventilator is turned on, a rectangular isolation air curtain or a circular isolation air curtain is formed by the four groups of guide members.

[0015] In one practicable embodiment, the guide member is connected to the ventilation pipe via an electric ball joint, and the electric ball joint is control-connected to the control unit, and the control unit adjusts the angle of the guide member by controlling the electric ball joint.

[0016] In one feasible embodiment, the detection unit further includes an atmospheric wind direction and speed detector, which is used to detect the wind direction and wind speed in the current environment and transmit them to the control unit; the control unit controls the air volume and diversion direction of the isolation air curtain of the isolation unit according to the wind direction and wind speed.

[0017] In one practicable manner, an air volume regulating valve is provided at each of the flow guide members, the air volume regulating valve is communicatively connected to the control unit, and the air volume regulating valve is used to regulate the wind speed at the outlet of the flow guide member.

[0018] In one practicable manner, the control unit may further adjust the wind speed at the outlet of the guide member by adjusting the air supply volume of the ventilator.

[0019] In one practicable manner, the isolation ventilation system further comprises a rainwater collection box, a water level detection unit is provided in the rainwater collection box, a rainwater discharge valve is provided at the bottom of the rainwater collection box, and both the water level detection unit and the rainwater discharge valve are communicatively connected to the control unit; the rainwater collection box is used to collect rainwater, the water level detection unit is used to detect the water level in the rainwater collection box in real time and output it to the control unit, and when the water level in the rainwater collection box exceeds a maximum value, the control unit controls the opening of the rainwater discharge valve

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] In the technical solution of the present application, the pollutants in the gas at the air inlet of the air-conditioning and fresh air system are detected by a detection unit. When the pollutant concentration does not meet the requirements, the control unit controls the start-up of the ventilator of the isolation unit, and forms an isolation air curtain through a plurality of the guide members. The isolation air curtain is used to isolate the pollutants discharged from the chimney. By setting the electric ball joint seat, the angle of the guide member is adjusted to adjust the shape, area and flow direction of the isolation air curtain. By setting the atmospheric wind direction and wind speed detector, the control unit controls the air volume and diversion direction of the isolation air curtain of the isolation unit according to the wind direction and wind speed. Therefore, the present application can guide the direction of the flue gas flow according to the characteristics of the ship's chimney gas emission and the external wind conditions, using the guide members arranged around the chimney exhaust port to form an isolation air curtain with variable area, prevent the flue gas from flowing back to the air inlet of the air-conditioning and fresh air system, and avoid the chimney smoke from diffusing into the air-conditioning and fresh air system and then entering the crew's living cabin, endangering the crew's health. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a ship chimney isolation ventilation system according to an embodiment of the present invention.

[0023] Figure 2 This is a rendering of a ship chimney isolation ventilation system according to an embodiment of the present invention.

[0024] The description of the accompanying drawings is as follows:

[0025] 1. Ventilator; 2. Air volume regulating valve; 3. Flow meter; 4. Flow guide; 5. Rainwater collection box; 6. Rainwater discharge valve; 7. Flue gas sensor; 8. Carbon dioxide sensor; 9. Carbon monoxide sensor; 10. Atmospheric wind direction and speed detector; 11. Control unit. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0030] See also Figure 1 The present application provides a ship chimney isolation ventilation system, comprising:

[0031] The detection unit is arranged at the air inlet of the air conditioning fresh air system. The detection unit is used to obtain pollutant concentration data of the gas discharged from the ship chimney to the air inlet of the air conditioning fresh air system, and output the pollutant concentration data.

[0032] The isolation unit is arranged at the chimney of the ship, and multiple guide members 4 are arranged on the surrounding side of the chimney of the ship. The isolation unit also includes a ventilator 1, which is connected to the multiple guide members 4 through ventilation pipes. The airflow generated by the ventilator 1 is output through the guide members 4, and the angle of the guide members 4 is adjustable.

[0033] The control unit 11 is respectively connected to the detection unit and the isolation unit. A pollutant concentration threshold is set in the control unit 11 to obtain the pollutant concentration data of the detection unit and compare the pollutant concentration data with the pollutant concentration threshold. When the pollutant concentration data is greater than or equal to the pollutant concentration threshold, the control unit 11 controls the ventilator 1 of the isolation unit to start, and forms an isolation air curtain through the multiple guide members 4. The isolation air curtain is used to isolate pollutants discharged from the chimney. By arranging the detection unit at the air inlet of the air-conditioning fresh air system, when the detection unit detects that the pollutant concentration does not meet the requirements, it means that the pollutants generated by the chimney flow to the air inlet of the air-conditioning fresh air system, and the isolation unit is controlled to be turned on by the control unit 11. The isolation unit is used to isolate pollutants.

[0034] In one practicable manner, the detection unit includes at least a flue gas sensor 7, a carbon dioxide sensor 8, and a carbon monoxide sensor 9; the detection unit obtains pollutant concentration data based on real-time detection data of the flue gas sensor 7, the carbon dioxide sensor 8, and the carbon monoxide sensor 9.

[0035] It should be noted that the flue gas sensor 7, the carbon dioxide sensor 8, and the carbon monoxide sensor 9 can be used in different combinations according to the fuel type of the ship, and can be replaced with other types of gas component detection sensors according to the different fuel types of the ship.

[0036] It should also be noted that the number of the detection units can be configured according to the number of air inlets of the air-conditioning and fresh air system, and the number of the detection units is less than or equal to the number of air inlets of the air-conditioning and fresh air system.

[0037] In one practicable manner, a plurality of the guide members 4 are evenly distributed at the air outlet of the ventilator 1 .

[0038] In one practicable embodiment, the plurality of guide members 4 include at least four groups of guide members 4, which are respectively arranged on the periphery of the air outlet. When the ventilator 1 is turned on, a rectangular isolation air curtain or a circular isolation air curtain is formed by the four groups of guide members 4. The rectangular isolation air curtain or the circular isolation air curtain is used to isolate pollutants therein.

[0039] In one practicable embodiment, the guide member 4 is connected to the ventilation pipe via an electric ball joint, and the electric ball joint is adjusted by the control unit 11 to adjust the angle of the guide member 4 to adjust the shape, area and flow direction of the isolation air curtain.

[0040] In one practicable embodiment, the detection unit further includes an atmospheric wind direction and speed detector 10, which is used to detect the wind direction and speed in the current environment and transmit the information to the control unit 11. The control unit 11 controls the air volume and diversion direction of the isolation air curtain of the isolation unit according to the wind direction and speed.

[0041] In one practicable manner, the atmospheric wind direction and speed detector 10 is installed on a mast of a ship to accurately determine the wind direction and wind speed.

[0042] In one practicable manner, the cross section of the flow guide 4 is an elongated strip or a circular shape.

[0043] In one feasible embodiment, an air volume regulating valve 2 is provided at each of the guide members 4, and the air volume regulating valve 2 is communicatively connected to the control unit 11. The air volume regulating valve 2 is used to adjust the wind speed at the outlet of the guide member 4, and the predetermined wind speed at the outlet of the guide member 4 is 0.5-5.0 m / s.

[0044] In another practicable manner, the control unit 11 can also adjust the wind speed at the outlet of the guide member 4 by adjusting the air supply volume of the ventilator 1, and the predetermined wind speed at the outlet of the guide member 4 is 0.5-5.0 m / s.

[0045] It should be noted that a velocity meter 3 is provided at the flow guide 4 , and the velocity meter 3 is used to obtain the real-time wind speed at the outlet of the flow guide 4 .

[0046] In an practicable manner, the ventilator 1 is a high-temperature resistant variable-frequency ventilator 1 , and the frequency of the ventilator 1 is 25-50 Hz.

[0047] It should be noted that the total pressure, static pressure and number of fans 1 are all related to the structure and layout of the ventilation pipe and the predetermined wind speed at the outlet of the guide member 4. There is at least one fan 1.

[0048] In one practicable embodiment, the isolation ventilation system further includes a rainwater collection box 5, a water level detection unit is provided in the rainwater collection box 5, a rainwater discharge valve 6 is provided at the bottom of the rainwater collection box 5, and the water level detection unit and the rainwater discharge valve 6 are both communicatively connected with the control unit 11; the rainwater collection box 5 is used to collect rainwater, and the water level detection unit is used to detect the water level in the rainwater collection box 5 in real time and output it to the control unit 11. When the water level in the rainwater collection box 5 exceeds the maximum value, the control unit 11 controls the opening of the rainwater discharge valve 6 to ensure that the rainwater is collected while ensuring that the rainwater can be discharged to the discharge port in a timely and efficient manner to avoid rainwater overflow and affect the isolation ventilation system, thereby ensuring the normal operation of the isolation ventilation system.

[0049] In summary, if Figure 2 As shown, the present application detects the pollutants in the gas at the air inlet of the air-conditioning and fresh air system through a detection unit. When the pollutant concentration does not meet the requirements, the control unit 11 controls the ventilator 1 of the isolation unit to start, and forms an isolation air curtain through a plurality of the guide members 4. The isolation air curtain is used to isolate the pollutants discharged from the chimney. By setting the electric ball joint seat, the angle of the guide member 4 is adjusted to adjust the shape, area and flow direction of the isolation air curtain. By setting the atmospheric wind direction and wind speed detector 10, the control unit 11 controls the air volume and diversion direction of the isolation air curtain of the isolation unit according to the wind direction and wind speed. Therefore, the present application can guide the direction of the flue gas flow according to the characteristics of the ship's chimney gas emission and the external wind conditions, using the guide members 4 arranged around the chimney exhaust port to form an isolation air curtain with variable area, thereby preventing the flue gas from flowing back to the air inlet of the air-conditioning and fresh air system, and avoiding the problem that the chimney flue gas diffuses into the air-conditioning and fresh air system and then enters the crew's living cabin, endangering the crew's health.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A ship chimney isolation ventilation system, characterized in that: include: A detection unit is provided at the air inlet of the air conditioning and fresh air system, and is used to obtain pollutant concentration data of the gas discharged from the ship chimney to the air inlet of the air conditioning and fresh air system, and output the pollutant concentration data; An isolation unit is provided at the chimney of the ship, and a plurality of flow guides are provided around the chimney of the ship. The isolation unit also includes a ventilator, which is connected to the plurality of flow guides through ventilation pipes. The airflow generated by the ventilator is output through the flow guides, and the angle of the flow guides is adjustable. A control unit is respectively connected to the detection unit and the isolation unit. A pollutant concentration threshold is set in the control unit, and the pollutant concentration data of the detection unit is obtained. The pollutant concentration data is compared with the pollutant concentration threshold. When the pollutant concentration data is greater than or equal to the pollutant concentration threshold, the control unit controls the ventilator of the isolation unit to start, and forms an isolation air curtain through the multiple guide members. The isolation air curtain is used to isolate pollutants discharged from the chimney.

2. The ship chimney isolation ventilation system according to claim 1, characterized in that: The detection unit at least includes a smoke sensor, a carbon dioxide sensor, and a carbon monoxide sensor.

3. The ship chimney isolation ventilation system according to claim 1, characterized in that: The number of the detection units can be configured according to the number of air inlets of the air-conditioning and fresh air system, and the number of the detection units is less than or equal to the number of air inlets of the air-conditioning and fresh air system.

4. The ship chimney isolation ventilation system according to claim 1, characterized in that: The plurality of flow guide members are evenly distributed at the air outlet of the ventilator.

5. The ship chimney isolation ventilation system according to claim 4, characterized in that: The plurality of flow guides include at least four groups of flow guides, which are respectively arranged on the peripheral sides of the air outlet. When the ventilator is turned on, a rectangular isolation air curtain or a circular isolation air curtain is formed by the four groups of flow guides.

6. The ship chimney isolation ventilation system according to claim 1, characterized in that: The guide member is connected to the ventilation pipe via an electric ball joint, and the electric ball joint is control-connected to the control unit. The control unit adjusts the angle of the guide member by controlling the electric ball joint.

7. The ship chimney isolation ventilation system according to claim 1, characterized in that: The detection unit also includes an atmospheric wind direction and speed detector, which is used to detect the wind direction and wind speed in the current environment and transmit them to the control unit; the control unit controls the air volume and diversion direction of the isolation air curtain of the isolation unit according to the wind direction and wind speed.

8. The ship chimney isolation ventilation system according to claim 7, characterized in that: An air volume regulating valve is provided at each of the flow guide members. The air volume regulating valve is in communication connection with the control unit and is used to regulate the wind speed at the outlet of the flow guide member.

9. The ship chimney isolation ventilation system according to claim 7, characterized in that: The control unit can also adjust the wind speed at the outlet of the guide member by adjusting the air supply volume of the ventilator.

10. The ship chimney isolation ventilation system according to any one of claims 1 to 9, characterized in that: The isolation ventilation system also includes a rainwater collection box, a water level detection unit is provided in the rainwater collection box, a rainwater discharge valve is provided at the bottom of the rainwater collection box, and the water level detection unit and the rainwater discharge valve are both communicatively connected with the control unit; the rainwater collection box is used to collect rainwater, and the water level detection unit is used to detect the water level in the rainwater collection box in real time and output it to the control unit. When the water level in the rainwater collection box exceeds the maximum value, the control unit controls the opening of the rainwater discharge valve.

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