Ventilation system for cabin of ship in ice area

Abstract

The invention provides an ice region ship engine room ventilation system which comprises a fan chamber, an air inlet, an air outlet, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet, and the fan chamber is placed on a deck. The fan unit is arranged in the fan chamber; the air inlet is provided with an inlet shutter, an inlet air heating device is arranged between the inlet shutter and the fan unit, the air outlet is communicated with a cabin, and the fan chamber is used for conveying fresh air to the cabin. According to the cabin ventilation system for the ship in the ice region, when the ship runs to the ice region, the cabin ventilation system can heat fresh air, and the problem that equipment operation and cold-proof work of sailors are affected due to the fact that cold air directly enters a cabin is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship equipment, and in particular relates to a ventilation system for an engine room of an ice-covered ship. Background Art

[0002] The ship ventilation system is an important part of the ship. Its main function is to protect the health of the crew. The ship ventilation system can exhaust the dirty air inside the ship, keep the air inside the ship fresh and flowing, and effectively prevent the crew from getting sick due to poor breathing. Ensure the normal operation of the ship. The ship ventilation system can effectively exhaust the moisture and pollutants inside the ship, prevent the ship equipment from getting damp and corroded, and ensure the normal operation of the ship. Improve the safety of the ship. The ship ventilation system can exhaust the harmful gas inside the ship, prevent the occurrence of fire and explosion accidents, and improve the safety of the ship.

[0003] However, when the ship sails in ice areas, the engine room ventilation system cannot heat the fresh air, causing cold air to directly enter the engine room, affecting the operation of equipment and the crew's cold protection work. Summary of the invention

[0004] The present invention provides an ice-cold ship engine room ventilation system, comprising:

[0005] A fan room, the fan room is placed on the deck, and the fan room has an air inlet and an air outlet;

[0006] A fan unit, wherein the fan unit is arranged in the fan room;

[0007] An inlet shutter is arranged at the air inlet, an air inlet heating device is arranged between the inlet shutter and the fan unit, the air outlet is communicated with the cabin, and the fan chamber is used to convey fresh air to the cabin.

[0008] In some optional embodiments: the air outlet is provided with a pneumatically closable return air louver.

[0009] In some optional implementations: the fan assembly is installed in the fan room via elastic vibration-damping pads.

[0010] In some optional embodiments: the fan chamber is provided with a box-type silencer and a detachable sound insulation board, the number of the detachable sound insulation boards is two, the two ends of the box-type silencer are respectively connected to a detachable sound insulation board, the two detachable sound insulation boards are connected to the side walls of the fan chamber, and the two detachable sound insulation boards and the box-type silencer isolate the air inlet from the fan unit.

[0011] In some optional implementations: the fan unit includes two variable frequency fans.

[0012] In some optional embodiments: the inlet shutters are rain and fog removing closable shutters.

[0013] In some optional embodiments: there are multiple air inlets, and each of the air inlets is provided with the inlet shutter.

[0014] In some optional embodiments: there is at least one air inlet heating device.

[0015] In some optional embodiments: the internal medium of the air inlet heating device is an ethylene glycol solution.

[0016] In some optional implementations: the air inlet heating device can utilize chimney waste heat to obtain thermal energy.

[0017] The beneficial effects brought by the present invention are as follows:

[0018] It can be seen from the above scheme that the present invention provides an engine room ventilation system for ice-covered ships. When the ship sails in ice areas, the engine room ventilation system can heat the fresh air, solving the problem of cold air directly entering the engine room, affecting equipment operation and crew members' cold-proof work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an ice-capable ship cabin ventilation system provided by the present invention is shown.

[0020] In the figure, 1 is the air inlet heating device; 2 is the inlet shutter; 3 is the box-type silencer; 4 is the fan room; 5 is the pneumatically closable return air shutter; 6 is the detachable sound insulation board; 7 is the fan unit; and 8 is the engine room. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. 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.

[0022] like Figure 1 As shown, the present invention provides an ice-covered ship engine room ventilation system, comprising:

[0023] A fan room 4 is placed on the deck and has an air inlet and an air outlet;

[0024] A fan unit 7, wherein the fan unit 7 is arranged in the fan chamber 4;

[0025] An inlet shutter 2 is provided at the air inlet, an inlet air heating device 1 is provided between the inlet shutter 2 and the fan unit 7, the air outlet is connected to the cabin 8, and the fan chamber 4 is used to transport fresh air to the cabin 8.

[0026] The fan unit 7 provides air flow power. Fresh air enters from the air inlet, is heated by the air inlet heating device 1, and then enters the cabin 8 from the air outlet through the fan unit 7.

[0027] The present invention provides an engine room ventilation system for an ice-covered ship. When the ship travels in an ice-covered area, the engine room 8 ventilation system can heat the fresh air, thereby solving the problem that cold air directly enters the engine room 8 and affects the operation of equipment and the cold-proof work of the crew.

[0028] In some optional embodiments: the air outlet is provided with a pneumatically closable return air louver 5 .

[0029] The air in the cabin 8 is prevented from being blown back.

[0030] In some optional implementations: the fan assembly 7 is installed in the fan chamber 4 via an elastic vibration-damping pad.

[0031] Elastic vibration-damping pads are installed to reduce vibration and noise.

[0032] In some optional embodiments: the fan chamber 4 is provided with a box-type silencer 3 and a detachable sound insulation board 6, there are two detachable sound insulation boards 6, and the two ends of the box-type silencer 3 are respectively connected to a detachable sound insulation board 6, the two detachable sound insulation boards 6 are connected to the side wall of the fan chamber 4, and the two detachable sound insulation boards 6 and the box-type silencer 3 isolate the air inlet from the fan unit 7.

[0033] A box-type silencer 3 and a detachable sound insulation board 6 are arranged inside the fan room 4 to isolate the fan unit 7 from the inlet shutter 2, thereby reducing the impact of the noise of the fan unit 7 on the ship.

[0034] In some optional implementations: the fan unit 7 includes two variable frequency fans.

[0035] Variable frequency fans can control the air volume.

[0036] In some optional embodiments: the inlet shutters 2 are rain and fog removal closable shutters.

[0037] The blinds can be closed to prevent rain and fog from affecting ventilation.

[0038] In some optional implementations: there are multiple air inlets, and each air inlet is provided with an inlet shutter 2.

[0039] You can choose to open or close each air inlet.

[0040] In some optional embodiments: there is at least one air inlet heating device 1.

[0041] A plurality of air inlet heating devices 1 can be installed as required.

[0042] In some optional embodiments, the internal medium of the air inlet heating device 1 is ethylene glycol solution, which will not freeze and damage the pipeline.

[0043] In some optional implementations: the air inlet heating device 1 can utilize the waste heat from the chimney to obtain heat energy, thereby achieving the purpose of energy saving and emission reduction.

[0044] The beneficial effects brought by the present invention are as follows:

[0045] It can be seen from the above scheme that the present invention provides an engine room ventilation system for ice-covered ships. When the ship travels to ice areas, the engine room 8 ventilation system can heat the fresh air, thus solving the problem of cold air directly entering the engine room 8 and affecting equipment operation and crew members' cold-proof work.

[0046] In some optional implementations:

[0047] Variable frequency fan control logic:

[0048] 1. Differential pressure sensor:

[0049] The engine room 8 is tentatively located under the main deck, at the center of the engine room 8 shed, and the engine room 8 is located outside near the exhaust louvers. The internal and external pressure difference PDT is set at 50Pa (can be adjusted according to actual conditions).

[0050] 2. Temperature sensor:

[0051] A temperature sensor TT is installed outside the fan room 4 in the open air. The main temperature sensor TT01 is located under the main deck, at the center of the engine room 8 shed. The auxiliary temperature sensor TT02 is located near the fuel oil separator, but not too close.

[0052] 3. PDT has priority over TT, that is, the preset 50Pa positive pressure in the cabin 8 must be guaranteed first:

[0053] If the PDT feedback value is less than the set value of 50Pa, gradually increase the speed of all variable frequency fans until they reach the maximum speed. If TT01 is greater than the set value of 45℃, gradually increase the speed of all variable frequency fans until they reach the maximum speed. After running for 3 minutes, check the sensor feedback value again.

[0054] 4. If the PDT feedback value exceeds the preset value of 50Pa, the variable frequency fan frequency control board will check the feedback of TT01:

[0055] If TT01 is less than the preset value of 45°C (the preset value can be adjusted during commissioning and actual ship operation), the variable frequency fan frequency control board checks TT02. If TT02 is less than the preset 45°C, all variable frequency fans are allowed to reduce speed according to the step recommended by the variable frequency fan manufacturer (for example, by 10% or more). After running for 3 minutes, check the feedback value of the sensor again until it is reduced to the minimum speed of the variable frequency fan.

[0056] 5. If the inverter, temperature sensor or pressure difference sensor fails, the variable frequency fan runs at full speed or is manually controlled.

[0057] It can be seen from the above scheme that the present invention provides a ventilation system for the engine room of an ice-covered ship. When the ship travels to the ice area, the ventilation system of the engine room 8 can heat the fresh air, and the variable frequency fan automatically adjusts the fan speed according to the pressure difference between the engine room 8 and the outside and the temperature in the engine room 8 according to the preset logic, thereby utilizing the waste heat from the chimney and achieving energy conservation and environmental protection.

[0058] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An ice-going ship engine room ventilation system, characterized in that: include: A fan room, the fan room is placed on the deck, and the fan room has an air inlet and an air outlet; A fan unit, wherein the fan unit is arranged in the fan room; An inlet shutter is arranged at the air inlet, an air inlet heating device is arranged between the inlet shutter and the fan unit, the air outlet is communicated with the cabin, and the fan chamber is used to convey fresh air to the cabin.

2. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The air outlet is provided with a pneumatically closable return air louver.

3. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The fan unit is installed in the fan room through an elastic vibration-damping pad.

4. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The fan chamber is provided with a box-type silencer and a detachable sound insulation board, wherein there are two detachable sound insulation boards, and a detachable sound insulation board is connected to each of the two ends of the box-type silencer, and the two detachable sound insulation boards are connected to the side walls of the fan chamber, and the two detachable sound insulation boards and the box-type silencer isolate the air inlet from the fan unit.

5. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The fan unit includes two variable frequency fans.

6. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The imported blinds are rain and fog resistant and closable blinds.

7. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: There are multiple air inlets, and each of the air inlets is provided with the inlet shutter.

8. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: There is at least one air inlet heating device.

9. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The internal medium of the air inlet heating device is ethylene glycol solution.

10. The engine room ventilation system for ice-faring vessels according to claim 1, characterized in that: The air inlet heating device can utilize the waste heat of the chimney to obtain thermal energy.

Images