Dehumidifying and salt mist removing system for ship cargo hold
By combining the dehumidification system of the meter cooler and adsorption rotor, combined with the central cooling water system and the desalination spray filter, the problems of high power and difficult salinity control in harsh environments of traditional dehumidification devices are solved, achieving lower cost and More reliable cargo hold air environment.
Patent Information
- Application Number
- CN202421137986.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Traditional ship cargo hold dehumidifiers have high power in harsh marine environments, resulting in high operating costs and inability to effectively control salinity in the air, affecting cargo storage.
Design a ship cargo hold dehumidification and salt spray system, adopting a meter cooler and adsorption rotor, combining an external dehumidification system with a cargo hold ventilation system, using a central cooling water system to reduce the heater power, and adding a desalination filter to the system and humidity sensors to achieve accurate control of air humidity and salinity.
It effectively reduces the number and operating costs of dehumidification devices, ensures that the air humidity and salinity in the cargo hold meet the requirements, and protects the goods from moisture and salt spray corrosion.
Smart Images
Figure CN222137010U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ship dehumidification and desalination, and particularly relates to a ship cargo hold dehumidification and desalination mist system. Background Art
[0002] Ship cargo holds are generally equipped with ventilation systems, especially those of Ro-Ro passenger ships and Ro-Ro ships, which generally use directly circulated outside air and mechanical ventilation for forced circulation, that is, air from outside the ship is sucked into the cargo hold through a fan, mixed with the air inside the cargo hold, and then discharged from the cargo hold for replacement ventilation.
[0003] The air at sea and near the docks often has high humidity and salinity. If the goods transported in the cargo hold have index requirements for air humidity and salinity and are not resistant to moisture and salt spray corrosion, it will affect the goods.
[0004] The traditional technical solution is to directly use a rotary dehumidifier and ignore the salinity in the air. Either a dehumidifier is arranged inside the cargo hold to directly deal with the humidity of the air inside the cargo hold, or a dehumidifier is installed in the cargo hold ventilation system to deal with the humidity of the air entering the cargo hold. But no matter which one, if there is a severe situation where the air humidity in the navigation area is high and lasts for a long time, the regeneration wind heating temperature of the rotary dehumidifier will be very high, resulting in a very large heating power of the heater, increasing the operating cost of the ship. Since the dehumidification capacity of a single dehumidifier is limited, multiple dehumidifiers need to be arranged when the dehumidification capacity is particularly large. The ship has limited space and the arrangement will be difficult. If the configuration does not take into account the severe air humidity conditions at the beginning, the target effect will not be achieved, and it may even cause the rotary wheel to absorb moisture saturation, and ultimately fail to dehumidify for a long time, causing serious impact on the goods. Utility Model Content
[0005] In view of the above problems, the utility model provides a dehumidification and desalination mist system for ship cargo holds, which solves the problem of high heater power in conventional rotary dehumidification devices, thereby reducing ship operating costs; for cargo holds with particularly large dehumidification requirements, the number of dehumidification devices can be reduced, thereby saving space and costs; and the problem of controlling the salinity in the air is solved, so as to more reliably ensure the air humidity and salinity requirements for storing goods in the cargo hold.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A dehumidification and desalting system for a cargo hold of a ship, comprising a dehumidification system and a cargo hold ventilation system, wherein the dehumidification system is arranged outside the cargo hold and communicated with the interior of the cargo hold, the dehumidification system comprises a surface cooler and a dehumidification device, the surface cooler is communicated with the outside through a first air duct, the dehumidification device comprises an air supply fan, an adsorption type rotor, a heater and a first exhaust fan, the inlet and outlet of the air supply fan are respectively connected to the wet air inlet of the surface cooler and the adsorption type rotor through a pipeline, the dry air outlet of the adsorption rotor is communicated with the interior of the cargo hold through a pipeline, the regeneration air inlet of the adsorption rotor is communicated with the interior of the cargo hold through a second air duct, the heater is arranged on the second air duct, the wet air outlet of the adsorption type rotor is communicated with the outside through a third air duct, the first exhaust fan It is arranged on the third air duct, and the second air duct is connected with the third air duct through an adsorption rotor; the cargo hold ventilation system comprises a first air inlet, a first air outlet, a second air inlet and a second air outlet arranged on the side wall of the cargo hold, a first desalination filter, a first closing air damper and a second humidity sensor are arranged at the first air inlet, the second humidity sensor is connected with the blower, the first exhaust fan and the first closing air damper through the control system of the ship, a second exhaust fan and a second closing air damper are arranged at the first air outlet, the second exhaust fan and the second closing air damper are both connected with the telecommunication control system of the ship, the dry air outlet of the adsorption rotor is connected with the second air inlet, and the second air outlet is connected with the second air duct.
[0008] Furthermore, the dehumidification system also includes a first humidity sensor, which is arranged on the first air duct, and the first humidity sensor is connected to the air blower through the control of the ship central control system.
[0009] Furthermore, the dehumidification system also includes a second desalting mist filter, and the second desalting mist filter is arranged on the inlet end of the first air duct.
[0010] Furthermore, the surface cooler is connected to a central cooling water system of the ship.
[0011] Furthermore, a shutter is provided on the outer side of the first air outlet.
[0012] Furthermore, a third desalting mist filter is provided on the outer side of the second air inlet, and a third closing air damper is provided on the inner side of the second air inlet; a fourth desalting mist filter is provided on the outer side of the second air outlet, and a fourth closing air damper is provided on the inner side of the second air outlet, and the third closing air damper and the fourth closing air damper are connected to the ship central control system by telecommunication control.
[0013] After the ship cargo hold dehumidification and desalination system of the utility model is equipped with a surface cooler, the heater power of the adsorption rotary dehumidification equipment can be greatly reduced, thereby saving costs, which is beneficial to reducing the number of dehumidification devices, thereby saving costs and saving layout space; when designing, the air humidity conditions under the worst working conditions of the ship's operating route can be fully considered to achieve the humidity target value required for transporting goods, so as to ensure that the dehumidification device can operate normally and reliably; the salinity in the air can be effectively controlled, and ultimately a more reliable air environment is provided for the cargo in the cargo hold; the use of the desalination filter can effectively filter the salt particles in the air, thereby solving the problem of salt fog corrosion to the cargo. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The utility model is a schematic diagram of the structure of the dehumidification and desalination mist system for a ship cargo hold.
[0015] Among them, 1-surface cooler, 2-first humidity sensor, 3-second desalting mist filter, 4-first air duct, 5-air supply fan, 6-adsorption rotor, 7-heater, 8-first exhaust fan, 9-second air duct, 10-third air duct, 11-first desalting mist filter, 12-first closing air damper, 13-second humidity sensor, 14-second exhaust fan, 15-second closing air damper, 16-louver, 17-third desalting mist filter, 18-fourth desalting mist filter, 19-third closing air damper, 20-fourth closing air damper, 21-fourth air duct; 22-dehumidification device; 23-cargo hold area. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] like Figure 1As shown, a dehumidification and desalination system for a cargo hold of a ship comprises a dehumidification system and a cargo hold ventilation system, wherein the dehumidification system is arranged outside the cargo hold and communicated with the inside of the cargo hold, the dehumidification system comprises a surface cooler 1, a first humidity sensor 2, a second desalination filter 3 and a dehumidification device 22, the surface cooler 1 is communicated with the outside through a first air duct 4, the surface cooler 1 is connected to a central cooling water system of the ship, the first humidity sensor 2 is arranged on the first air duct 4, the first humidity sensor 2 is connected to a blower 5 through a control system of the ship, and the second desalination filter 3 is arranged The dehumidification device 22 comprises a blower 5, an adsorption wheel 6, a heater 7 and a first exhaust fan 8. The inlet and outlet of the blower 5 are respectively connected to the wet air inlet of the surface cooler 1 and the adsorption wheel 6 through a pipeline. The dry air outlet of the adsorption wheel 6 is connected to the interior of the cargo compartment through a pipeline. The regeneration air inlet of the adsorption wheel 6 is connected to the interior of the cargo compartment through a second air duct 9. The heater 7 is arranged on the second air duct 9. The wet air outlet of the adsorption wheel 6 is connected to the outside through a third air duct 10. The first exhaust fan 8 is arranged The cargo hold ventilation system comprises a first air inlet, a first air outlet, a second air inlet and a second air outlet arranged on the side wall of the cargo hold, a first desalination filter 11, a first closing damper 12 and a second humidity sensor 13 are arranged at the first air inlet, the second humidity sensor 13 is connected with the air supply fan 5, the first exhaust fan 8 and the first closing damper 12 through the control of the ship central control system, and a second exhaust fan 14 and a second closing damper 13 are arranged at the first air outlet. A closing damper 15, the dry air outlet of the adsorption wheel 6 is connected to the second air inlet, the second air outlet is connected to the second air duct 9, a shutter 16 is provided on the outer side of the first air outlet, a third desalting mist filter 17 is provided on the outer side of the first air inlet, and a third closing damper 18 is provided on the inner side of the second air inlet; a fourth desalting mist filter 18 is provided on the outer side of the second air outlet, and a fourth closing damper 20 is provided on the inner side of the second air outlet, and the third closing damper 19 and the fourth closing damper 20 are connected to the telecommunication control system of the ship central control system.
[0018] The working principle of the ship cargo hold dehumidification and desalination system of the utility model is as follows:
[0019] When the second humidity sensor 13 detects that the air humidity in the cargo hold area 23 is higher than the target value, the first damper 12 is closed, the third damper 19 is opened, the fourth damper 20 is opened, and the dehumidification device 22 is started. The outside air is sucked in by the blower 5 of the dehumidification device 22, first passes through the desalination mist filter 3 to filter the salt particles, and then enters the surface cooler 1 through the air duct 4. The outside air is processed by the surface cooler 1 to reduce the initial moisture content of the air, and then is processed by the adsorption wheel 6 to achieve air with a humidity that meets the target value, and finally is transported to the third desalination mist filter 17 through the third air duct 10 to further filter the salt particles in the air before entering the cargo hold area 23. The second exhaust fan 14 and the second closing damper 15 are always in the open state. Most of the air treated by the dehumidification device 22 is transported by the second exhaust fan 14 through the fourth air duct 21 to the shutter 16 and discharged outside the cargo hold. A small part of the air needs to be sucked into the first exhaust fan 8 as the regeneration air of the dehumidification device 22, enters the heater 7 through the second air duct 9 and becomes high-temperature air to heat the adsorption wheel 6, and evaporates the moisture in the air absorbed by the adsorption wheel 6 to become humid air and is discharged by the first exhaust fan 8.
[0020] When the first humidity sensor 2 detects that the humidity of the outside air is not higher than the target value, the dehumidification device 22 can stop working, the first closing damper 12 is opened, the third closing damper 19 is closed, the fourth closing damper 20 and the second closing damper 15 are always in the open state, and after the outside air enters the cargo hold, it is transported by the second exhaust fan 14 through the fourth air duct 21 to the shutter 16 and discharged outside the cargo hold.
[0021] A surface cooler 1 is added to the air inlet side of the traditional rotary dehumidification device 22, and the central cooling water system originally existing in the ship is used to provide cooling capacity to the surface cooler to reduce the initial moisture content of the external incoming air; the function of the desalting mist filter is to reduce the salt particles in the air; the function of the humidity sensor is to monitor the humidity in the air; the function of the adsorption wheel is to adsorb moisture in the air; the function of the blower in the dehumidification device 22 is to send the outside air to the adsorption wheel for processing; the function of the heater is to heat the regenerated air to provide heat to the adsorption wheel and evaporate the moisture in the wheel; the function of the exhaust fan in the dehumidification device 22 is to exhaust the humid air; the function of closing the wind gate is to isolate the air circulation when it is closed.
[0022] A person skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A ship cargo hold dehumidification and desalination system, characterized in that: It includes a dehumidification system and a cargo hold ventilation system, the dehumidification system is arranged outside the cargo hold and communicated with the interior of the cargo hold, the dehumidification system includes a surface cooler and a dehumidification device, the surface cooler is communicated with the outside through a first air duct, the dehumidification device includes an air supply fan, an adsorption wheel, a heater and a first exhaust fan, the inlet and outlet of the air supply fan are respectively connected to the wet air inlet of the surface cooler and the adsorption wheel through a pipeline, the dry air outlet of the adsorption wheel is communicated with the interior of the cargo hold through a pipeline, the regeneration air inlet of the adsorption wheel is communicated with the interior of the cargo hold through a second air duct, the heater is arranged on the second air duct, the wet air outlet of the adsorption wheel is communicated with the outside through a third air duct, and the first exhaust fan is arranged on the third air duct , the second air duct is connected with the third air duct through an adsorption rotor; the cargo hold ventilation system comprises a first air inlet, a first air outlet, a second air inlet and a second air outlet arranged on the side wall of the cargo hold, a first desalination filter, a first closing air damper and a second humidity sensor are arranged at the first air inlet, the second humidity sensor is connected with the blower, the first exhaust fan and the first closing air damper through the control system of the ship, a second exhaust fan and a second closing air damper are arranged at the first air outlet, the second exhaust fan and the second closing air damper are both connected with the telecommunication control system of the ship, the dry air outlet of the adsorption rotor is connected with the second air inlet, and the second air outlet is connected with the second air duct.
2. A ship cargo hold dehumidification and desalination mist system according to claim 1, characterized in that: The dehumidification system also includes a first humidity sensor, which is arranged on a first air duct, and the first humidity sensor is connected to the air blower through the control of a ship central control system.
3. A ship cargo hold dehumidification and desalination mist system according to claim 1, characterized in that: The dehumidification system further comprises a second desalination filter, and the second desalination filter is arranged on the inlet end of the first air duct.
4. A ship cargo hold dehumidification and desalination mist system according to claim 1, characterized in that: The surface cooler is connected to the central cooling water system of the ship.
5. A ship cargo hold dehumidification and desalination mist system according to claim 1, characterized in that: A shutter is arranged on the outer side of the first air outlet.
6. A ship cargo hold dehumidification and desalination mist system according to claim 1, characterized in that: A third desalting mist filter is provided on the outer side of the second air inlet, and a third closing damper is provided on the inner side of the second air inlet; a fourth desalting mist filter is provided on the outer side of the second air outlet, and a fourth closing damper is provided on the inner side of the second air outlet, and the third closing damper and the fourth closing damper are connected to the ship central control system by telecommunication control.