Marine inner-cooling type air dehumidification system and method

Abstract

The invention belongs to the technical field of marine air dehumidification, and particularly relates to a marine inner-cooling type air dehumidification system and method utilizing ship waste heat regeneration and fresh water cooling capacity cooling, and the marine inner-cooling type air dehumidification system mainly comprises an adsorption dehumidification heat exchanger, a fresh water pump, a three-way air valve, a heat exchanger, a fan and the like. The PLC is used for controlling start and stop of the water pump and the fan, the opening degree of the air valve is adjusted, and the switching time of adsorption dehumidification and desorption regeneration is automatically adjusted. Adsorption heat released in the dehumidification process of an adsorbent is absorbed by fresh water in a ship central cooling system, approximate isothermal dehumidification is achieved, and the dehumidification efficiency is improved; and high-temperature waste gas of the ship is used for heating regenerated air, so that recycling of waste heat is realized. The method has the advantages of safety, reliability, low operation cost, energy conservation and environmental protection.

Description

Technical Field

[0001] The invention belongs to the technical field of marine air dehumidification, and in particular relates to an internally cooled air dehumidification system and method utilizing ship waste heat regeneration and fresh water cooling. Background Art

[0002] Ships, as an important means of transporting goods in world trade, undertake about 90% of the world's cargo transportation volume. The span of the ship's navigation area is very large. In different seasons and different sea areas, the external climate conditions vary significantly with the sea area. In the hot summer, the relative humidity of the sea surface air is usually 70% to 80%, or even 100%. According to the requirements for air conditioning in ship accommodation spaces in GB / T 13409-92 standard, if conventional compression refrigeration and air conditioning are used, a large amount of air conditioning cooling load is required to reduce the moisture content of the air by using condensation dehumidification, and the power consumption is high. Solid adsorption dehumidification uses adsorbents to physically adsorb water molecules in humid air. It mainly includes rotary and fixed types. Since the rotary type can work continuously, it is the most used, but the overall device is large in size, occupies a large space, has high energy consumption, and the air quality is greatly affected by environmental factors. In fixed adsorption dehumidification, the release of adsorption heat causes the equilibrium adsorption temperature between the adsorbent and the treated air to increase, while the hygroscopic performance of the adsorbent decreases and the heat and moisture transfer potential difference between dehumidification and regeneration increases. The regeneration temperature required for the cycle increases, and it is difficult to improve the overall cycle performance.

[0003] It should be noted that this part of the present invention only provides background technology related to the present invention and does not necessarily constitute prior art or known technology. Summary of the invention

[0004] The object of the present invention is to provide a marine internal cooling air dehumidification system and method, so as to overcome the problem that the existing marine air dehumidification system cannot realize the switching between dehumidification and regeneration when using solid adsorption dehumidification.

[0005] In order to achieve the above objectives, in a first aspect, an embodiment of the present invention provides a marine internal cooling air dehumidification system, comprising: A main air inlet pipeline is used to be connected to the air inlet of the cabin, and a first three-ventilation valve, a first adsorption dehumidification heat exchanger and a fresh air fan are sequentially arranged on the main air inlet pipeline along the air inlet path; the first adsorption dehumidification heat exchanger is used to dehumidify the gas in the main air inlet pipeline; The main exhaust duct is used to be connected to the exhaust port of the cabin compartment. A heat exchanger, a second three-ventilation valve, a second adsorption dehumidification heat exchanger and a regeneration air fan are sequentially arranged on the main exhaust duct along the exhaust path; part of the high-temperature exhaust gas generated by the combustion of the fuel of the main / auxiliary engine of the ship is introduced into the pipe of the heat exchanger to heat the regeneration air in the main exhaust duct; the second adsorption dehumidification heat exchanger is used to dehumidify the gas in the main exhaust duct; a fresh water heat exchange module, the fresh water heat exchange module being connected to the heat exchange channels of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger, respectively, and being used for performing heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger and performing heat exchange with the solid adsorbent in the second adsorption dehumidification heat exchanger; A control module, wherein the control module is electrically connected to the first three ventilation valves, the fresh air fan, the second three ventilation valves, the regeneration air fan and the fresh water heat exchange module, and is used to perform heat exchange with the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger respectively by controlling the fresh water heat exchange module.

[0006] Optionally, the marine internal cooling air dehumidification system also includes: a third ventilation valve, a first branch air inlet duct, a second branch air inlet duct, a first branch exhaust duct and a second branch exhaust duct; the third ventilation valve is arranged on the main exhaust duct between the regeneration air fan and the second adsorption dehumidification heat exchanger; one end of the first branch air inlet duct is connected to the bypass interface of the first ventilation valve, and the other end is connected to the main exhaust duct between the third ventilation valve and the second adsorption dehumidification heat exchanger; one end of the second branch air inlet duct is connected to the bypass interface of the second ventilation valve, and the other end is connected to the main exhaust duct between the first adsorption dehumidification heat exchanger and the fresh air fan; the first branch exhaust duct One end of the pipeline is connected to the first adsorption dehumidification heat exchanger, and the other end is connected to the main exhaust duct between the second three-ventilation valve and the heat exchanger; one end of the second branch exhaust duct is connected to the bypass interface of the third three-ventilation valve, and the other end is connected to the first adsorption dehumidification heat exchanger; the control module is used to realize the conduction switching between the main pipeline and the branch pipeline by controlling the opening or closing of the bypass interfaces of the first three-ventilation valve, the second three-ventilation valve and the third three-ventilation valve; wherein the main pipeline includes a circulation pipeline formed by the main air inlet pipeline and the main exhaust pipeline, and the branch pipeline includes a circulation pipeline formed by the first branch air inlet pipeline, the second branch air inlet pipeline, the first branch exhaust pipeline and the second branch exhaust pipeline.

[0007] Optionally, the marine internal cooling air dehumidification system further includes: an air valve; the air valve is arranged on the first branch exhaust duct, and the control module is electrically connected to the air valve for controlling the air volume of the discharged regeneration air.

[0008] Optionally, the fresh water heat exchange module includes: a fresh water inlet pipeline, a fresh water discharge pipeline, a first inlet branch pipeline, a first discharge branch pipeline, a second inlet branch pipeline, a second discharge branch pipeline and a fresh water pump; the fresh water pump is arranged in the fresh water inlet pipeline, one end of the first inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the inlet of the heat exchange channel of the first adsorption dehumidification heat exchanger; one end of the first discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the outlet of the heat exchange channel of the first adsorption dehumidification heat exchanger; one end of the second inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the inlet of the heat exchange channel of the second adsorption dehumidification heat exchanger; one end of the second discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the outlet of the heat exchange channel of the second adsorption dehumidification heat exchanger.

[0009] Optionally, the marine internal cooling air dehumidification system further comprises: a first solenoid valve and a second solenoid valve; the first solenoid valve is arranged on the first liquid inlet branch pipeline, and the second solenoid valve is arranged on the second liquid inlet branch pipeline; The control module is electrically connected to the fresh water pump, the first solenoid valve and the second solenoid valve, respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger.

[0010] Optionally, the control module adopts a PLC controller.

[0011] Optionally, the marine internal cooling air dehumidification system further comprises: a filter; the filter is arranged at one end of the main air inlet pipeline close to the inlet, and is used to filter the fresh air entering the main air inlet pipeline.

[0012] In a second aspect, an embodiment of the present invention further provides a method for dehumidifying marine internally cooled air. Based on the marine internally cooled air dehumidification system as described in the first aspect, the dehumidification method comprises the following steps: S1, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed; S2, starting the fresh water pump and the first solenoid valve to send the fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve; S3, start the fresh air fan and the regeneration air fan, the outdoor fresh air flows through the first adsorption dehumidification heat exchanger through the first three-way ventilation valve, and after being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan; S4, using a heat exchanger to heat the regeneration air coming from the cabin; S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

[0013] Optionally, after step S5, the method further includes: S6, after running for a preset time, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be opened; S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released by the adsorbent during the adsorption process; S8, outdoor fresh air flows through the bypass interface of the first three-ventilation valve, enters the second adsorption dehumidification heat exchanger, and after adsorption and dehumidification, passes through the bypass interface of the second three-ventilation valve and is sent into the cabin through the fresh air fan; S9, using a heat exchanger to heat the regeneration air coming from the cabin; S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

[0014] The embodiments of the present invention have at least the following technical effects: The ship-based internally cooled air dehumidification system and method provided in the embodiments of the present invention utilizes the waste heat generated by the ship to heat the regeneration air for the regeneration of the adsorbent, thereby realizing partial recycling of the ship's waste heat and saving energy and protecting the environment. At the same time, the low-temperature fresh water in the ship's central cooling system is used to cool the adsorbent, and the adsorption heat released by the adsorbent is taken away in real time, thereby overcoming the deficiency of heating and dehumidification in the traditional solid adsorption dehumidification method, realizing approximate isothermal dehumidification, and improving the dehumidification effect of the adsorbent. In addition, the system can also automatically adjust the switching time of the pipeline, the start and stop of the three-ventilation valve and the solenoid valve, and the opening of the regulating air valve according to the collected temperature and humidity data, thereby intermittently cooling and regenerating the adsorbent to realize the continuous supply of suitable humidified fresh air required for the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1A schematic diagram of the system principle of a marine internal cooling air dehumidification system provided by an embodiment of the present invention; Figure 2 A schematic diagram of a marine internal cooling air dehumidification system in a first operating state provided by an embodiment of the present invention; Figure 3 A schematic diagram of a marine internal cooling air dehumidification system in a second operating state provided by an embodiment of the present invention; Figure 4 The present invention provides a flow chart of a method for dehumidifying marine internally cooled air.

[0017] Reference numerals: 1-filter; 2-first three-way ventilation valve; 3-first solenoid valve; 4-first adsorption dehumidification heat exchanger; 5-fresh air fan; 6-cabin; 7-regeneration air fan; 8-fresh water pump; 9-second solenoid valve; 10-second adsorption dehumidification heat exchanger; 11-second three-way ventilation valve; 12-heat exchanger; 13-air valve; 14-third three-way ventilation valve; 15-control module; 100-main air inlet pipeline; 200-main exhaust pipeline; 300-fresh water heat exchange module; 310-fresh water inlet pipeline; 320-fresh water discharge pipeline; 330-first liquid inlet branch pipeline; 340-first liquid discharge branch pipeline; 350-second liquid inlet branch pipeline; 360-second liquid discharge branch pipeline; 400-first branch air inlet pipeline; 500-second branch air inlet pipeline; 600-first branch exhaust pipeline; 700-second branch exhaust pipeline. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of 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.

[0019] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0020] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] like Figure 1 As shown, an embodiment of the present invention provides a marine internal cooling air dehumidification system, comprising: a main air inlet pipeline 100, a main exhaust air pipeline 200, a fresh water heat exchange module 300 and a control module 15, the main air inlet pipeline 100 is used to be connected to the air inlet of the cabin compartment 6, and the main air inlet pipeline 100 is sequentially provided with a first three-ventilation valve 2, a first adsorption dehumidification heat exchanger 4 and a fresh air fan 5 along the air inlet path; the first adsorption dehumidification heat exchanger 4 is used to dehumidify the gas in the main air inlet pipeline 100.

[0024] The main exhaust duct 200 is used to be connected to the exhaust port of the cabin compartment 6, and a heat exchanger 12, a second third ventilation valve 11, a second adsorption dehumidification heat exchanger 10 and a regeneration air fan 7 are sequentially arranged on the main exhaust duct 200 along the exhaust path; part of the high-temperature exhaust gas generated by the combustion of the main / auxiliary engine fuel of the ship is introduced into the pipe of the heat exchanger 12 to heat the regeneration air in the main exhaust duct 200; the second adsorption dehumidification heat exchanger 10 is used to dehumidify the gas in the main exhaust duct 200.

[0025] The fresh water heat exchange module 300 is connected to the heat exchange channels of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 respectively, and is used for heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger 4 and the solid adsorbent in the second adsorption dehumidification heat exchanger 10 .

[0026] The control module 15 is electrically connected to the first three ventilation valves 2, the fresh air fan 5, the second three ventilation valves 11, the regeneration air fan 7 and the fresh water heat exchange module 300, respectively, and is used to control the fresh water heat exchange module 300 to perform heat exchange with the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10, respectively, thereby achieving dehumidification of the fresh air and resetting the adsorbent using the regeneration air.

[0027] In some embodiments, the marine internal cooling air dehumidification system further includes: a third ventilation valve 14 , a first branch air inlet duct 400 , a second branch air inlet duct 500 , a first branch exhaust duct 600 , and a second branch exhaust duct 700 .

[0028] Specifically, the third ventilation valve 14 is arranged on the main exhaust duct 200 between the regeneration air fan 7 and the second adsorption dehumidification heat exchanger 10; one end of the first branch air inlet duct 400 is connected to the bypass interface of the first ventilation valve 2, and the other end is connected to the main exhaust duct 200 between the third ventilation valve 14 and the second adsorption dehumidification heat exchanger 10; one end of the second branch air inlet duct 500 is connected to the bypass interface of the second ventilation valve 11, and the other end is connected to the main air inlet duct 100 between the first adsorption dehumidification heat exchanger 4 and the fresh air fan 5.

[0029] One end of the first branch exhaust pipeline 600 is connected to the first adsorption dehumidification heat exchanger 4, and the other end is connected to the main exhaust pipeline 200 between the second three-ventilation valve 11 and the heat exchanger 12; one end of the second branch exhaust pipeline 700 is connected to the bypass interface of the third three-ventilation valve 14, and the other end is connected to the first adsorption dehumidification heat exchanger 4.

[0030] The control module 15 is used to realize the switching between the main pipeline and the branch pipeline by controlling the opening or closing of the bypass interface (corresponding to the c end of the valve) of the first three ventilation valves 2, the second three ventilation valves 11 and the third three ventilation valves 14. Among them, the main pipeline includes a circulation pipeline formed by the main air inlet pipeline 100 and the main exhaust pipeline 200, and the branch pipeline includes a circulation pipeline formed by the first branch air inlet pipeline 400, the second branch air inlet pipeline 500, the first branch exhaust pipeline 600 and the second branch exhaust pipeline 700. It should be noted that the first three ventilation valves 2, the second three ventilation valves 11 and the third three ventilation valves 14 in the embodiment of the present invention are defaulted to be connected at the a end and the b end. When the bypass interface is opened, the a end and the c end are connected, and the b end is closed.

[0031] In some embodiments, in order to facilitate the control of air volume and change of circulation pipelines, the marine internal cooling air dehumidification system also includes: an air valve 13; the air valve 13 is arranged on the first branch exhaust pipeline 600, and the control module 15 is electrically connected to the air valve 13, which is used to control the air volume of the discharged regeneration air and control the start or close of the first branch exhaust pipeline 600.

[0032] In some embodiments, continue to refer to Figure 1 The fresh water heat exchange module 300 includes: a fresh water inlet pipeline 310, a fresh water discharge pipeline 320, a first inlet branch pipeline 330, a first discharge branch pipeline 340, a second inlet branch pipeline 350, a second discharge branch pipeline 360 ​​and a fresh water pump 8; The fresh water pump 8 is arranged in the fresh water inlet pipeline 310, one end of the first inlet branch pipeline 330 is connected to the fresh water inlet pipeline 310, and the other end is connected to the inlet of the heat exchange channel of the first adsorption dehumidification heat exchanger 4; one end of the first discharge branch pipeline 340 is connected to the fresh water discharge pipeline 320, and the other end is connected to the outlet of the heat exchange channel of the first adsorption dehumidification heat exchanger 4.

[0033] One end of the second liquid inlet branch pipeline 350 is connected to the fresh water inlet pipeline 310, and the other end is connected to the heat exchange channel inlet of the second adsorption dehumidification heat exchanger 10; one end of the second liquid discharge branch pipeline 360 ​​is connected to the fresh water discharge pipeline 320, and the other end is connected to the heat exchange channel outlet of the second adsorption dehumidification heat exchanger 10.

[0034] In some embodiments, the marine internal cooling air dehumidification system further includes: a first solenoid valve 3 and a second solenoid valve 9 ; the first solenoid valve 3 is arranged on the first liquid inlet branch pipeline 330 , and the second solenoid valve 9 is arranged on the second liquid inlet branch pipeline 350 .

[0035] The control module 15 is electrically connected to the fresh water pump 8, the first solenoid valve 3 and the second solenoid valve 9 respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three-ventilation valve 2, the second three-ventilation valve 11 and the third three-ventilation valve 14 to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10.

[0036] Optionally, the control module 15 adopts a PLC controller, and the PLC controller is used to control various valves, pumps and other components.

[0037] Optionally, in order to prevent impurities in the fresh air flow from entering the cabin 6 and affecting the air quality, the marine internal cooling air dehumidification system also includes: a filter 1; the filter 1 is arranged at one end of the main air inlet duct 100 close to the inlet, and is used to filter the fresh air entering the main air inlet duct 100.

[0038] Based on the same inventive concept, Figure 4As shown, an embodiment of the present invention further provides a method for dehumidifying marine internal cooling air. Based on the marine internal cooling air dehumidification system in the aforementioned embodiment, the dehumidification method comprises the following steps: S1, control the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed.

[0039] S2, start the fresh water pump and the first solenoid valve to send the fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve.

[0040] S3, start the fresh air fan and the regeneration air fan, the outdoor fresh air flows through the first adsorption dehumidification heat exchanger through the first three-way ventilation valve, and after being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan.

[0041] S4, using a heat exchanger to heat the regeneration air coming from the cabin.

[0042] S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

[0043] Optionally, continue to Figure 4 , after step S5, further comprising: S6, after running for a preset time, control the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to open.

[0044] S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released during the adsorption process of the adsorbent.

[0045] S8, control the outdoor fresh air to flow through the bypass interface of the first three-ventilation valve, enter the second adsorption dehumidification heat exchanger, and after adsorption and dehumidification, pass through the bypass interface of the second three-ventilation valve and then be sent into the cabin through the fresh air fan; S9, using a heat exchanger to heat the regeneration air coming from the cabin.

[0046] S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

[0047] The ship-based internally cooled air dehumidification system and method provided in the embodiments of the present invention utilizes the waste heat generated by the ship to heat the regeneration air for the regeneration of the adsorbent, thereby realizing partial recycling of the ship's waste heat and saving energy and protecting the environment. At the same time, the low-temperature fresh water in the ship's central cooling system is used to cool the adsorbent, and the adsorption heat released by the adsorbent is taken away in real time, thereby overcoming the deficiency of heating and dehumidification in the traditional solid adsorption dehumidification method, realizing approximate isothermal dehumidification, and improving the dehumidification effect of the adsorbent. In addition, the system can also automatically adjust the switching time of the pipeline, the start and stop of the three-ventilation valve and the solenoid valve, and the opening of the regulating air valve according to the collected temperature and humidity data, thereby intermittently cooling and regenerating the adsorbent to realize the continuous supply of suitable humidified fresh air required for the cabin.

[0048] In a specific embodiment, the PLC controller sets the cycle switching time T of dehumidification and regeneration according to the data collected from the temperature and humidity sensor, and controls the opening of the relevant air valves, and the start and stop of the fresh water pump and the fan.

[0049] like Figure 1 As shown, the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 are both fin-tube heat exchangers, with solid adsorbent coated on the fins. The cooling medium flows in the tubes and takes away the adsorption heat generated by the adsorbent adsorption process, so as to maintain low temperature and improve the dehumidification effect.

[0050] Air duct side: the a end of the first three ventilation valves 2 is connected to the filter 1 through the fresh air pipeline, the b end is connected to the first adsorption dehumidification heat exchanger 4, the c end of the first three ventilation valves is connected to the b end of the second adsorption dehumidification heat exchanger 10 and the third three ventilation valves 14, the right end of the first adsorption dehumidification heat exchanger 4 is connected to the fresh air fan 5, and the outlet of the fresh air fan is connected to the cabin. The right end of the second adsorption dehumidification heat exchanger 10 is connected to the a end of the second three ventilation valves, the b end of the second three ventilation valves is connected to the heat exchanger 12, and the c end of the second three ventilation valves is connected to the first adsorption dehumidification heat exchanger 4 and the fresh air fan 5. The lower end of the air valve 13 is connected to the left end of the heat exchanger 12 and the b end of the second three ventilation valves 11, and the upper end is connected to the first adsorption dehumidification heat exchanger 4. The right end of the heat exchanger 12 is connected to the cabin, and part of the high-temperature exhaust gas generated by the combustion of the fuel of the ship's main / auxiliary engines is introduced into the pipe of the heat exchanger 12. The a end of the third ventilation valve 14 is connected to the inlet of the regeneration air fan, the b end is connected to the left end of the second adsorption dehumidification heat exchanger 10, and the c end is connected to the left end of the first adsorption dehumidification heat exchanger 4.

[0051] Cooling medium side: the outlet of the fresh water pump 8 is connected to the left side of the first solenoid valve 3 and the left side of the second solenoid valve 9, the right side of the first solenoid valve 3 is connected to the water pipe in the first adsorption dehumidification heat exchanger 4, and the right side of the second solenoid valve 9 is connected to the left water pipe of the second adsorption dehumidification heat exchanger 10. The water pipe outlets of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 are connected to form a cooling water outlet.

[0052] The specific working principle of the above-mentioned marine internal cooling air dehumidification system is as follows: Initial stage (first operating state), such as Figure 2 As shown, the PLC opens the a and b ends of the first three ventilation valves 2, the a and b ends of the second three ventilation valves 11, and opens the a and b ends of the third three ventilation valves 14. The first solenoid valve 3 is opened, the c end of the first three ventilation valves 2, the c end of the second three ventilation valves 11 and the c end of the third three ventilation valves 14 are closed, and the second solenoid valve 9 is closed. The fresh water pump 8 is started to send the fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger 4 through the first solenoid valve 3. The fresh air fan 5 and the regeneration air fan 7 are started, and the outdoor fresh air is filtered by the filter 1, flows into the a end of the first three ventilation valves 2, flows out through the b end, and is adsorbed and dehumidified by the adsorbent attached to the fins, and then is sucked into the cabin by the fresh air fan. On the regeneration air side, since the moisture content of the indoor air is lower than that of the outdoor fresh air, the water vapor partial pressure is lower, and it is used as the regeneration air, which is conducive to the regeneration process and flows outside the pipe of the heat exchanger 12. Part of the exhaust gas discharged by the main / auxiliary engines of the ship is introduced into the pipe of the heat exchanger 12 to heat the regeneration air coming from the cabin. The heated high-temperature and low-humidity air flows through the b and a ends of the second three-ventilation valve, enters the second adsorption dehumidification heat exchanger 10, heats and regenerates the adsorbent on the fins, and takes away the desorbed water vapor, and then flows through the b and a ends of the third three-ventilation valve 14. The high-temperature and high-humidity regeneration air is discharged through the regeneration air fan 7.

[0053] After running for T time, if Figure 3 As shown, the adsorption and regeneration process of the first and second adsorption dehumidification heat exchangers are switched (second operating state). The PLC action opens the a and c ends of the first three ventilation valves 2, the a and c ends of the second three ventilation valves 10, opens the a and c ends of the third three ventilation valves 14, and closes the b end of the first three ventilation valves, the b end of the second three ventilation valves and the b end of the third three ventilation valves 14. Close the first solenoid valve 3, open the second solenoid valve 9 and the air valve 13, and the cooling fresh water is pumped into the pipe of the second dehumidification heat exchanger 10 by the fresh water pump 8 to cool the adsorbent on the fins and absorb the adsorption heat released by the adsorption process of the adsorbent. After being filtered by the filter 1, the fresh air flows through the a and c ends of the first three ventilation valves, enters the second adsorption dehumidification heat exchanger 10, and after adsorption and dehumidification, enters the a and c ends of the second three ventilation valves 11, and is then sent into the cabin through the fresh air fan. The regenerated air heated by the exhaust gas of the main / auxiliary engines of the ship flows into the first dehumidification heat exchanger 4 through the air valve 13, and heats and regenerates the adsorbent on the fins after absorbing moisture. The regenerated air after absorbing moisture passes through the c and a ends of the third ventilation valve 14 and is discharged through the regeneration air fan 7.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific conditions. In the description of this specification, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A marine internal cooling air dehumidification system, characterized in that: include: A main air inlet pipeline is used to be connected to the air inlet of the cabin, and a first three-ventilation valve, a first adsorption dehumidification heat exchanger and a fresh air fan are sequentially arranged on the main air inlet pipeline along the air inlet path; the first adsorption dehumidification heat exchanger is used to dehumidify the gas in the main air inlet pipeline; The main exhaust duct is used to be connected to the exhaust port of the cabin compartment. A heat exchanger, a second three-ventilation valve, a second adsorption dehumidification heat exchanger and a regeneration air fan are sequentially arranged on the main exhaust duct along the exhaust path; part of the high-temperature exhaust gas generated by the combustion of the main / auxiliary engine fuel of the ship is introduced into the pipe of the heat exchanger to heat the regeneration air in the main exhaust duct; the second adsorption dehumidification heat exchanger is used to dehumidify the gas in the main exhaust duct; a fresh water heat exchange module, the fresh water heat exchange module being connected to the heat exchange channels of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger, respectively, and being used for performing heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger and performing heat exchange with the solid adsorbent in the second adsorption dehumidification heat exchanger; A control module, wherein the control module is electrically connected to the first three ventilation valves, the fresh air fan, the second three ventilation valves, the regeneration air fan and the fresh water heat exchange module, and is used to perform heat exchange with the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger respectively by controlling the fresh water heat exchange module.

2. The marine internal cooling air dehumidification system according to claim 1, characterized in that: Also includes: The third ventilation valve, the first branch air inlet pipeline, the second branch air inlet pipeline, the first branch exhaust pipeline and the second branch exhaust pipeline; The third three-ventilation valve is arranged on the main exhaust air duct between the regeneration air fan and the second adsorption dehumidification heat exchanger; one end of the first branch air inlet duct is connected to the bypass interface of the first three-ventilation valve, and the other end is connected to the main exhaust air duct between the third three-ventilation valve and the second adsorption dehumidification heat exchanger; one end of the second branch air inlet duct is connected to the bypass interface of the second three-ventilation valve, and the other end is connected to the main air inlet duct between the first adsorption dehumidification heat exchanger and the fresh air fan; One end of the first branch exhaust pipeline is connected to the first adsorption dehumidification heat exchanger, and the other end is connected to the main exhaust pipeline between the second third ventilation valve and the heat exchanger; one end of the second branch exhaust pipeline is connected to the bypass interface of the third third ventilation valve, and the other end is connected to the first adsorption dehumidification heat exchanger; The control module is used to realize the conduction switching between the main pipeline and the branch pipeline by controlling the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves; wherein the main pipeline includes a circulation pipeline formed by the main air inlet pipeline and the main exhaust pipeline, and the branch pipeline includes a circulation pipeline formed by a first branch air inlet pipeline, a second branch air inlet pipeline, a first branch exhaust pipeline and a second branch exhaust pipeline.

3. The marine internal cooling air dehumidification system according to claim 2, characterized in that: Also includes: Air valve; The air valve is arranged on the first branch exhaust duct, and the control module is electrically connected to the air valve for controlling the air volume of the exhausted regeneration air.

4. The marine internal cooling air dehumidification system according to claim 3, characterized in that: The fresh water heat exchange module comprises: a fresh water inlet pipeline, a fresh water discharge pipeline, a first inlet branch pipeline, a first discharge branch pipeline, a second inlet branch pipeline, a second discharge branch pipeline and a fresh water pump; The fresh water pump is arranged in the fresh water inlet pipeline; one end of the first inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the first adsorption dehumidification heat exchanger; one end of the first discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the first adsorption dehumidification heat exchanger; One end of the second liquid inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the second adsorption dehumidification heat exchanger; one end of the second liquid discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the second adsorption dehumidification heat exchanger.

5. The marine internal cooling air dehumidification system according to claim 4, characterized in that: Also includes: A first solenoid valve and a second solenoid valve; the first solenoid valve is arranged on the first liquid inlet branch pipeline, and the second solenoid valve is arranged on the second liquid inlet branch pipeline; The control module is electrically connected to the fresh water pump, the first solenoid valve and the second solenoid valve, respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger.

6. The marine internal cooling air dehumidification system according to claim 1, characterized in that: The control module adopts a PLC controller.

7. The marine internal cooling air dehumidification system according to claim 1, characterized in that: Also includes: Filter; the filter is arranged at one end of the main air inlet duct close to the inlet, and is used to filter the fresh air entering the main air inlet duct.

8. A method for dehumidifying marine internal cooling air, characterized in that: Based on the marine internal cooling air dehumidification system according to claim 5, the dehumidification method comprises the following steps: S1, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed; S2, starting the fresh water pump and the first solenoid valve to send the fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve; S3, start the fresh air fan and the regeneration air fan, the outdoor fresh air flows through the first adsorption dehumidification heat exchanger through the first three-way ventilation valve, and after being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan; S4, using a heat exchanger to heat the regeneration air coming from the cabin; S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

9. The method for dehumidifying marine internal cooling air according to claim 8, characterized in that: After step S5, the method further includes: S6, after running for a preset time, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be opened; S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released by the adsorbent during the adsorption process; S8, outdoor fresh air flows through the bypass interface of the first three-ventilation valve, enters the second adsorption dehumidification heat exchanger, and after adsorption and dehumidification, passes through the bypass interface of the second three-ventilation valve and is sent into the cabin through the fresh air fan; S9, using a heat exchanger to heat the regeneration air coming from the cabin; S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

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