Intelligent ventilation system for cargo hold of automobile roll-on-roll-off ship

Abstract

The utility model discloses an intelligent ventilation system for a cargo hold of an automobile roll-on-roll-off ship, which comprises a fan room, an air supply fan, a structural air duct and a central processing unit, and a first air inlet and a second air inlet are respectively arranged on two side walls of the fan room. An electric closing air brake and a stainless steel wire net are arranged on the first air inlet from inside to outside, an electric closing air brake and a demister are arranged on the second air inlet from inside to outside, a humidity sensor is arranged on the outer side of the top wall of the fan room, and the air supply fan is arranged in the structural air duct. The air supply fan is connected with the central processing unit through a cable, and the two electric closing air brakes and the humidity sensor are in linkage control through the central processing unit. The intelligent ventilation system for the cargo hold of the automobile roll-on-roll-off ship meets the requirement for water mist removal of an inlet in a high-humidity environment and achieves a remarkable energy-saving effect in a dry environment at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of ship ventilation, in particular to an intelligent ventilation system for a cargo hold of a car roll-on / roll-off ship. Background Art

[0002] In the operation of car ro-ro ships, the power consumption of the ventilation system is a cost that cannot be ignored. In particular, the fan motor, as the core power-consuming equipment of the ventilation system, has a direct impact on the power consumption of the entire ship. Therefore, reducing the power consumption of the fan motor has become the key to reducing the power consumption of the entire ship.

[0003] The power consumption of a single fan is mainly determined by two parameters: air volume and fan pressure head. Under the premise of keeping the air volume unchanged, if we can effectively reduce the fan pressure head, the power of the fan will also be reduced accordingly, thus achieving the purpose of reducing power consumption.

[0004] When calculating the fan pressure head, we need to comprehensively consider the resistance losses in multiple aspects. These mainly include: inlet resistance loss, air valve resistance loss, air duct resistance loss and indoor air outlet resistance loss. Among them, the inlet resistance loss, as an important component, usually accounts for about 15% of the total pressure head. Therefore, if the inlet resistance can be effectively reduced, the total pressure head of the fan can be significantly reduced, thereby reducing the power consumption of the fan. This measure not only helps to improve energy utilization efficiency and reduce operating costs, but also conforms to the environmental protection concept of energy conservation and emission reduction.

[0005] Traditional technical solutions generally configure defoggers at outdoor air inlets. The original intention of this unified configuration is to cope with various atmospheric environments. However, in order to ensure that the defogger can work effectively under various air conditions, its internal structure is often designed to be quite complicated, which inevitably increases resistance loss. Especially under relatively dry air conditions, the effect of the defogger is not significant, but it will lead to unnecessary energy waste due to air loss. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides an intelligent ventilation system for the cargo hold of a car roll-on / roll-off ship, which can simultaneously meet the inlet demisting requirements in a high humidity environment and achieve significant energy saving effects in a dry environment.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An intelligent ventilation system for a cargo hold of a car roll-on / roll-off ship comprises a fan room, an air supply fan, a structural air duct and a central processing unit, wherein a first air inlet and a second air inlet are respectively provided on two side walls of the fan room, an electric closing damper and a stainless steel wire mesh are provided on the first air inlet from the inside to the outside, an electric closing damper and a defogger are provided on the second air inlet from the inside to the outside, a humidity sensor is provided on the outside of the top wall of the fan room, and the air supply fan is arranged in the structural air duct; the air supply fan is connected to the central processing unit through a cable, and the two electric closing dampers and the humidity sensor are interlockedly controlled by the central processing unit.

[0009] Furthermore, a frequency converter is provided on the cable between the air supply fan and the central processing unit.

[0010] Furthermore, an air volume sensor is provided in the structural air duct, the air volume sensor is located below the air supply fan, and the air volume sensor is connected to the central processing unit through telecommunication control.

[0011] Furthermore, the cargo hold is provided with an upper deck and a lower deck, the fan room is located on the upper end surface of the upper deck, and the structural air duct extends downward from the lower end surface of the upper deck and passes through the lower deck; an air outlet of the fan room is opened on the upper deck, and the air inlet of the air supply fan is located in the air outlet of the fan room.

[0012] Furthermore, the first air inlet and the second air inlet are respectively arranged on two opposite side walls of the fan room.

[0013] Compared with the prior art, the intelligent ventilation system for the cargo hold of a car ro-ro ship of the utility model has the following beneficial effects:

[0014] The humidity sensor can intelligently select the air intake scheme according to the outside air humidity. By switching the electric air valve, the optimal selection of the air inlet under different humidity conditions can be achieved, which not only ensures the air intake efficiency but also avoids the entry of water vapor.

[0015] The frequency converter is used to intelligently control the air supply fan, and the fan speed is automatically adjusted according to the changes in the system pressure head, which reduces unnecessary energy consumption and improves the efficiency of system operation;

[0016] 3. The air volume sensor can monitor the air volume of the fan in real time to ensure that the system air volume always meets the preset requirements. Through the intelligent control of the central processor, the fan speed is adjusted in time to achieve precise control of the air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the operation structure of the intelligent ventilation system of the utility model in a humid atmospheric environment;

[0018] Figure 2It is a schematic diagram of the operating structure of the intelligent ventilation system described in the utility model under a dry atmospheric environment.

[0019] Among them, 1-fan room, 2-air supply fan, 3-structural air duct, 4-central processing unit, 5-electric closing wind damper, 6-stainless steel wire mesh, 7-defogger, 8-humidity sensor, 9-frequency converter, 10-air volume sensor, 11-upper deck, 12-lower deck. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 As shown, an intelligent ventilation system for a cargo hold of a car ro-ro ship comprises a fan room 1, an air supply fan 2, a structural air duct 3 and a central processing unit 4, wherein a first air inlet and a second air inlet are respectively provided on two opposite side walls of the fan room 1, an electric closing damper 5 and a stainless steel wire mesh 6 are provided on the first air inlet from the inside to the outside, an electric closing damper 5 and a defogger 7 are provided on the second air inlet from the inside to the outside, a humidity sensor 8 is provided on the outer side of the top wall of the fan room 1, and the air supply fan is arranged in the structural air duct 3; the air supply fan 2 is connected to the central processing unit 4 through a cable, a frequency converter 9 is provided on the cable between the air supply fan 2 and the central processing unit 4, and the two electric closing dampers 5 and the humidity sensor 8 are interlockedly controlled by the central processing unit 4; an air volume sensor 10 is provided in the structural air duct 3, the air volume sensor 10 is located below the air supply fan 2, and the air volume sensor 10 is connected to the central processing unit 4 through telecommunication control.

[0022] The cargo hold is provided with an upper deck 11 and a lower deck 12, the fan room 1 is located on the upper end surface of the upper deck 11, and the structural air duct 3 extends downward from the lower end surface of the upper deck 11 and passes through the lower deck 12; an air outlet of the fan room 1 is opened on the upper deck 11, and an air inlet of the air supply fan 2 is located in the air outlet of the fan room 1.

[0023] The working mode of the intelligent ventilation system for the cargo hold of a car ro-ro ship described in the utility model is as follows: the outdoor humidity sensor 8 is used to monitor the external air humidity at all times and to control the selection of the air intake scheme. The two electric closing air valves 5 are interlocked with the humidity sensor 8 in control to realize the switching of the air inlet. When the external humidity is relatively high (for example, the relative humidity is greater than 80%), the electric closing air valve 5 on the side of the stainless steel wire mesh 6 of the air inlet is closed, and the electric closing air valve 5 on the side of the defogger 7 is opened. Under this condition, all the incoming air comes from the defogger 7, which plays a role in removing water mist. For details, see Figure 1 When the outside humidity is relatively low (the air is relatively dry), the electric air valves 5 on both sides are fully opened, and the cabin air can enter from the defogger 7 side or from the stainless steel wire mesh air outlet, thereby greatly reducing the inlet resistance loss of the air supply outlet. For details, see Figure 2 ;

[0024] The air supply fan 2 is intelligently controlled by the frequency converter 9. When the system detects that the required pressure head of the fan becomes smaller (when in a dry atmospheric environment, the two air valves are fully open, the resistance loss at the fan inlet will also be reduced accordingly), the frequency converter 9 will receive this signal and begin to gradually reduce the speed of the fan.

[0025] During the process of the fan speed decreasing, the central processor 4 will monitor the actual output air volume in real time according to the air volume sensor 10. The air volume sensor 10 is a high-precision measuring device that can accurately sense whether the current air volume meets the system requirements. Once the air volume sensor 10 determines that the current air volume has met or is close to the preset demand value, the central processor 4 will immediately stop the inverter 9 from further adjusting the fan speed, so that the fan can run stably at a new, lower speed, which not only improves the operating efficiency of the system, but also saves the energy consumption of the fan.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent ventilation system for a cargo hold of a car ro-ro ship, characterized in that: It includes a fan room, an air supply fan, a structural air duct and a central processing unit. A first air inlet and a second air inlet are respectively opened on the two side walls of the fan room. An electric closing damper and a stainless steel wire mesh are provided on the first air inlet from the inside to the outside. An electric closing damper and a defogger are provided on the second air inlet from the inside to the outside. A humidity sensor is provided on the outer side of the top wall of the fan room. The air supply fan is arranged in the structural air duct. The air supply fan is connected to the central processing unit through a cable, and the two electric closing dampers and the humidity sensor are interlocked and controlled by the central processing unit.

2. The intelligent ventilation system for a cargo hold of a car ro-ro ship according to claim 1, characterized in that: A frequency converter is arranged on the cable between the air supply fan and the central processing unit.

3. The intelligent ventilation system for a cargo hold of a car ro-ro ship according to claim 1, characterized in that: An air volume sensor is arranged in the structural air duct, and the air volume sensor is located below the air supply fan. The air volume sensor is connected to the central processing unit through telecommunication control.

4. The intelligent ventilation system for a cargo hold of a car ro-ro ship according to claim 1, characterized in that: The cargo hold is provided with an upper deck and a lower deck, the fan room is located on the upper end surface of the upper deck, and the structural air duct extends downward from the lower end surface of the upper deck and passes through the lower deck; an air outlet of the fan room is opened on the upper deck, and an air inlet of the air supply fan is located in the air outlet of the fan room.

5. The intelligent ventilation system for a cargo hold of a ro-ro ship according to claim 1, characterized in that: The first air inlet and the second air inlet are respectively arranged on two opposite side walls of the fan room.

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