Cooling system

Abstract

The invention relates to the technical field of cooling, and provides a cooling system. The cooling system comprises an FLNG platform cold energy bearing device, a refrigerant generation module, a cold energy recovery module and a secondary refrigerant circulation module, the FLNG platform cold energy bearing device and the refrigerant generation module both communicate with the cold energy recovery module, and the cold energy recovery module is used for attaching cold energy to a refrigerant to form a secondary refrigerant; the FLNG platform cold energy bearing device is used for providing cold energy; the refrigerant generation module is used for generating a refrigerant; the secondary refrigerant circulation module communicates with the cold energy recovery module and is used for circulating a secondary refrigerant between the to-be-cooled equipment heat exchanger and the cold energy recovery module. According to the cooling system, the defects that in the prior art, cold energy of LNG in the gasification process is not utilized, and potential threats can be caused to surrounding air and the marine environment are overcome, and the cooling system capable of recycling the cold energy of the LNG in the gasification process is achieved.

Description

Technical Field

[0001] The invention relates to the field of cooling technology, and in particular to a cooling system. Background Art

[0002] LNG (liquefied natural gas) on FLNG (floating liquefied natural gas) platforms is an ultra-low temperature liquid clean energy, and its gasification process can release a large amount of cold energy. LNG gasification mainly uses seawater or air as a heat source, and uses a heating furnace as a supplementary heat source to regasify it. LNG absorbs the heat of seawater or air, that is, releases cold energy to seawater or air, and then gasifies into natural gas that can be burned. However, the cold energy of LNG in the gasification process is not only not utilized, but also poses a potential threat to the surrounding air and marine environment. Therefore, in order to better utilize the cold energy of LNG in the gasification process, it is necessary to design a cooling system. Summary of the invention

[0003] The present invention provides a cooling system to solve the defects in the prior art that the cold energy of LNG in the gasification process is not only not utilized but also poses a potential threat to the surrounding air and marine environment, and realizes a cooling system that can recycle the cold energy of LNG in the gasification process.

[0004] The present invention provides a cooling system comprising: FLNG platform cold energy carrier, used to provide cold energy; A refrigerant generation module, used for generating refrigerant; A cold energy recovery module, the FLNG platform cold energy carrying device and the refrigerant generation module are both in communication with the cold energy recovery module, and the cold energy recovery module is used to attach the cold energy to the refrigerant to form a coolant; The refrigerant circulation module is connected to the cold energy recovery module, and the refrigerant circulation module is used to circulate the refrigerant between the heat exchanger of the equipment to be cooled and the cold energy recovery module.

[0005] According to a cooling system provided by the present invention, the refrigerant generation module comprises: A refrigerant forming pipeline, wherein the inlet end of the refrigerant forming pipeline is connected to an air pump, and the outlet end of the refrigerant forming pipeline is in communication with the cold energy recovery module; A compressor, connected to the refrigerant forming pipeline, for compressing the air entering the refrigerant forming pipeline; A nitrogen separation device is connected to the refrigerant forming pipeline and is located between the compressor and the cold energy recovery module, and is used to separate nitrogen from the air.

[0006] According to a cooling system provided by the present invention, the cold energy recovery module comprises: A cold energy input heat exchanger is connected to the FLNG platform cold energy carrying device and the refrigerant generation module, and the cold energy input heat exchanger is used to attach the cold energy to the refrigerant to form a coolant; A refrigerant storage tank, connected to the cold energy input heat exchanger, and used for storing the refrigerant; A circulating refrigeration unit is communicated with the refrigerant storage tank and the coolant circulation module, and is used for further cooling the coolant.

[0007] According to a cooling system provided by the present invention, a circulating refrigeration unit comprises: A first circulation pipeline, wherein the inlet and outlet ends of the first circulation pipeline are both connected to the refrigerant storage tank; A cold energy recovery heat exchanger is provided in the first circulation pipeline and is connected to the cold energy carrying device of the FLNG platform, and the cold energy recovery heat exchanger is used to further cool the coolant inside the refrigerant storage tank; The first circulation pump is arranged in the first circulation pipeline and is used for circulating the coolant inside the first circulation pipeline.

[0008] According to a cooling system provided by the present invention, the coolant circulation module comprises: A second circulation pipeline, one end of which is connected to the outlet of the cold energy recovery heat exchanger, and the other end of which is connected to the inlet of the cold energy input heat exchanger; A cold energy output heat exchanger, provided in the second circulation pipeline, for adjusting the temperature of the coolant; The second circulation pump is arranged in the second circulation pipeline, and is used for circulating the coolant in the second circulation pipeline.

[0009] According to a cooling system provided by the present invention, the cold energy input heat exchanger and the cold energy recovery heat exchanger are both connected to the FLNG platform cold energy carrying device through a cold energy transmission pipeline, and a first valve is provided on the cold energy transmission pipeline.

[0010] According to a cooling system provided by the present invention, a second valve is provided between the nitrogen separation device and the cold energy input heat exchanger.

[0011] According to a cooling system provided by the present invention, a third valve is provided between the refrigerant storage tank and the cold energy recovery heat exchanger.

[0012] According to a cooling system provided by the present invention, a fourth valve is provided between the cold energy recovery heat exchanger and the first circulation pump.

[0013] A cooling system provided according to the present invention also includes a control module, and the FLNG platform cold energy carrying device, the refrigerant generation module, the cold energy recovery module and the coolant circulation module are all connected to the control module signal, and the control module is used to control the operation of the FLNG platform cold energy carrying device, the refrigerant generation module, the cold energy recovery module and the coolant circulation module.

[0014] The cooling system provided by the present invention makes full use of the cold energy released during the LNG gasification process on the FLNG platform, which not only improves the energy utilization efficiency, but also reduces the potential threat of cold energy emissions to the surrounding air and marine environment. The present invention can also provide cooling capacity for other equipment on the FLNG platform, further reducing the energy consumption of the platform and improving the overall operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments 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 1 It is a structural schematic diagram of the cooling system provided by the present invention.

[0017] Reference numerals: 100: FLNG platform cold energy carrying device; 110: cold energy transmission pipeline; 120: first valve; 200: refrigerant generation module; 210: refrigerant forming pipeline; 220: compressor; 230: nitrogen separation device; 240: second valve; 300: cold energy recovery module; 310: cold energy input heat exchanger; 320: refrigerant storage tank; 330: first circulation pipeline; 340: third valve; 350: cold energy recovery heat exchanger; 360: fourth valve; 370: first circulation pump; 400: refrigerant circulation module; 410: cold energy output heat exchanger; 420: second circulation pipeline; 430: second circulation pump; 500: control module; 600: Heat exchanger of the equipment to be cooled. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0021] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0023] Combine the following Figure 1 The cooling system provided by the present invention is described.

[0024] Reference Figure 1 The present invention provides a cooling system including a FLNG platform cold energy carrying device 100, a refrigerant generation module 200, a cold energy recovery module 300 and a secondary coolant circulation module 400. The FLNG platform cold energy carrying device 100 and the refrigerant generation module 200 are both connected to the cold energy recovery module 300, the FLNG platform cold energy carrying device 100 is used to provide cold energy; the refrigerant generation module 200 is used to generate refrigerant; the cold energy recovery module 300 is used to attach cold energy to the refrigerant to form secondary coolant; the secondary coolant circulation module 400 is connected to the cold energy recovery module 300, and the secondary coolant circulation module 400 is used to circulate the secondary coolant between the heat exchanger 600 of the equipment to be cooled and the cold energy recovery module 300.

[0025] In this embodiment, the FLNG platform cold energy carrier 100 may specifically be a FLNG platform gas gasification device, which is the starting point of the entire system and can guide the waste cold energy during the vaporization and heating of liquefied natural gas to the cold energy recovery module 300 through pipelines or other transportation methods. The refrigerant generation module 200 is responsible for generating refrigerant, which is a medium that can work at a lower temperature and can effectively absorb cold energy.

[0026] When the cold energy and refrigerant are delivered to the cold energy recovery module 300, the latter combines the cold energy provided by the FLNG platform cold energy carrier 100 with the refrigerant generated by the refrigerant generation module 200, attaches the cold energy to the refrigerant through a heat exchange process, and forms a refrigerant. This process not only effectively recovers the cold energy released during the LNG gasification process, but also converts it into a form that can be transmitted and utilized.

[0027] The brine circulation module 400 is connected to the cold energy recovery module 300, and the formed brine can be circulated between the equipment to be cooled and the cold energy recovery module 300. During the circulation process, the brine transfers cold energy to the equipment to be cooled, such as air conditioning systems, refrigeration equipment or other industrial cooling applications. After the brine releases cold energy, it returns to the cold energy recovery module 300 and absorbs cold energy again, forming a continuous circulation process.

[0028] Through the above design, the present invention makes full use of the cold energy released during the LNG gasification process on the FLNG platform, which not only improves the energy utilization efficiency, but also reduces the potential threat of cold energy emissions to the surrounding air and marine environment. The present invention can also provide cold energy for other equipment on the FLNG platform, further reducing the energy consumption of the platform and improving the overall operating efficiency.

[0029] Secondly, the present invention utilizes the cold energy resources on the FLNG platform to recover, store and reuse the high-quality cold energy released during the gasification of liquid fuel in the cooling circulation system of the upper module device of the FLNG platform. It can operate under different working conditions of the upper module of the FLNG platform, which can effectively reduce the use of seawater during the operation of the FLNG platform, reduce the total fuel consumption, improve the energy efficiency index of the FLNG platform, reduce the dependence of the traditional seawater cooling system on external energy, and improve the economic benefits.

[0030] Furthermore, the main energy source of the FLNG platform cold energy carrier 100 is taken from the natural deep cooling of LNG, and no high-power equipment is required. While fully utilizing the LNG cold energy, there is no additional excessive energy consumption, and it has a strong application prospect. The low temperature generated by the present invention replaces the conventional method of using a seawater circulation system to cool the equipment on the FLNG platform, making up for the temperature difference limitation of the conventional cooling circulation device, and can continuously provide a lower temperature cooling cycle, saving daily operating costs and creating certain economic value. While fully utilizing the LNG cold energy, there is no additional excessive energy consumption, and it has a strong application prospect. At the same time, it reduces the impact of the cooling process on the marine environment, meets the requirements of environmental protection and energy conservation, and has the significance of energy saving, water saving, reducing carbon emissions, and comprehensive utilization of energy resources.

[0031] It should be noted that the main function of the refrigerant is to carry the cold in the LNG to the cold energy recovery module 300. During the operation of the refrigerant, the refrigerant is kept in a phase-change operation process, that is, the refrigerant is kept in a liquid state and does not vaporize during the operation, and the cold energy is provided by the sensible heat of the refrigerant. The ideal refrigerant needs to have a large heat of melting and vaporization, so that the amount of refrigerant can be reduced. In order to give full play to the efficiency of the heat exchanger, the refrigerant needs to have a high thermal conductivity. At the same time, the refrigerant has good chemical stability, will not combine and decompose at any temperature and pressure, and will not corrode metals, ensuring that pipelines and equipment can be used for a long time. The ideal refrigerant should not have the risk of explosion and combustion. It is easy to prepare, can be supplied in time and is inexpensive. It can ensure that it will not be solidified and block the pipeline when exchanging heat with LNG, that is, the working solidification point of the refrigerant should not be much higher than the LNG temperature. The liquid nitrogen produced by the above recovery system can meet the above-mentioned use functions. Specifically, the refrigerant can be liquid nitrogen.

[0032] Reference Figure 1In some embodiments of the present invention, the refrigerant generating module 200 includes a refrigerant forming pipeline 210, a compressor 220 and a nitrogen separation device 230. The inlet end of the refrigerant forming pipeline 210 is connected to an air pump, and the outlet end of the refrigerant forming pipeline 210 is connected to the cold energy recovery module 300; the compressor 220 is connected to the refrigerant forming pipeline 210 and is used to compress the air entering the refrigerant forming pipeline 210; the nitrogen separation device 230 is connected to the refrigerant forming pipeline 210 and is located between the compressor 220 and the cold energy recovery module 300, and is used to separate nitrogen from the air.

[0033] In the above structure, when the air pump introduces outside air into the refrigerant to form a pipeline, the compressor 220 starts to work and compresses the air in the pipeline to increase its pressure and temperature. The high-pressure air then enters the nitrogen separation device 230, where the nitrogen in the air is separated by physical or chemical methods (such as cryogenic separation, membrane separation, etc.). The separated nitrogen enters the cold energy recovery module 300 and performs heat exchange with the cold energy provided by the FLNG platform cold energy carrier 100 to form a refrigerant, that is, liquid nitrogen.

[0034] In the above structure, the refrigerant generation module 200 can not only efficiently generate high-purity liquid nitrogen as a refrigerant, but also ensure the purity and performance of the refrigerant. The generated liquid nitrogen is combined with the cold energy released during the LNG gasification process in the cold energy recovery module 300 to form a refrigerant, thereby effectively utilizing the cold energy and improving the energy efficiency of the entire system. At the same time, by separating the nitrogen in the air, the impact of other gas components on the refrigerant performance is also reduced, ensuring the stability and effectiveness of the refrigerant during the cold energy recovery process. This efficient refrigerant generation and cold energy recovery mechanism not only helps to reduce the waste of cold energy during the LNG gasification process, but also provides a reliable source of cold energy for other equipment on the FLNG platform, further improving the operating efficiency and environmental friendliness of the platform.

[0035] Reference Figure 1 In some embodiments of the present invention, the cold energy recovery module 300 includes a cold energy input heat exchanger 310, a refrigerant storage tank 320 and a circulating refrigeration unit. The cold energy input heat exchanger 310 is connected to the FLNG platform cold energy carrying device 100 and the refrigerant generation module 200. The cold energy input heat exchanger 310 is used to attach cold energy to the refrigerant to form a secondary coolant. When the refrigerant is nitrogen, the cold energy input heat exchanger 310 liquefies the nitrogen by utilizing cold energy; the refrigerant storage tank 320 is connected to the cold energy input heat exchanger 310 for storing the secondary coolant; the circulating refrigeration unit is connected to the refrigerant storage tank 320 and the secondary coolant circulation module 400 for further cooling the secondary coolant.

[0036] Specifically, the cold energy input heat exchanger 310 has three inlets and one outlet, wherein the three inlets are respectively connected to the outlet of the refrigerant forming pipeline 210, the FLNG platform cold energy bearing device 100 and the refrigerant circulation module 400, and the outlet of the cold energy input heat exchanger 310 is connected to the inlet of the refrigerant storage tank 320. The refrigerant storage tank 320 is provided with two inlets and one outlet, wherein one inlet is connected to the cold energy input heat exchanger 310, and the other inlet is connected to the outlet of the circulating refrigeration unit, and the outlet of the refrigerant storage tank 320 is connected to the inlet of the circulating refrigeration unit. It can be understood that the circulating refrigeration unit is a closed ring structure.

[0037] In this embodiment, the cold energy input heat exchanger 310 is a core component of the cold energy recovery module 300, which is connected to the FLNG platform cold energy carrier 100 and the refrigerant generation module 200. The cold energy provided by the FLNG platform cold energy carrier 100 is transported to the cold energy input heat exchanger 310 through a pipeline, and at the same time, the nitrogen generated by the refrigerant generation module 200 is also sent to the cold energy input heat exchanger 310. In the cold energy input heat exchanger 310, the cold energy is transferred to the nitrogen through a heat exchange process, so that the nitrogen is cooled and liquefied to form a refrigerant. This process not only effectively utilizes the cold energy released during the LNG gasification process, but also generates high-purity liquid nitrogen as a refrigerant.

[0038] The generated secondary refrigerant (liquid nitrogen) is transported to the refrigerant storage tank 320 through a pipeline for storage. The refrigerant storage tank 320 is connected to the cold energy input heat exchanger 310, and its design ensures the stable storage of liquid nitrogen in a low temperature environment to prevent evaporation loss. By storing the secondary refrigerant in the refrigerant storage tank 320, it can be ensured that the cold capacity can be supplied at any time when needed, thereby improving the flexibility and reliability of the system.

[0039] The circulating refrigeration unit is connected to the refrigerant storage tank 320 and the coolant circulation module 400, and its main function is to further cool the coolant. In some application scenarios, the coolant may need to be cooled to a lower temperature to meet specific cooling requirements. The circulating refrigeration unit cools the coolant to the required temperature through the FLNG platform cold energy carrier 100, and then transports the cooled coolant to the equipment to be cooled through the coolant circulation module 400 to provide the required cooling capacity.

[0040] Through this design, the cold energy recovery module 300 in this embodiment can not only efficiently utilize the cold energy released during the LNG gasification process to generate high-purity liquid nitrogen as a refrigerant, but also ensure the stable storage and further cooling of the refrigerant, providing a reliable source of cold for other equipment on the FLNG platform.

[0041] In some possible embodiments, when designing the refrigerant storage tank 320, it is necessary to make choices in the following aspects. First, it is necessary to select materials that can maintain good mechanical properties at extremely low temperatures, specifically including stainless steel (such as 304L and 316L), aluminum alloys and certain special alloys. These materials have good toughness and crack resistance at low temperatures. Secondly, the cryogen storage tank can adopt a double-layer structure, with the inner layer used to store liquid nitrogen and the outer layer used to provide thermal insulation protection. Efficient insulation materials such as perlite, polyurethane foam or vacuum insulation panels (VIPs) need to be filled between the two layers to minimize cold loss and prevent the entry of external heat. The tank body is also provided with a sturdy support structure to withstand the weight of liquid nitrogen and the load of the external environment.

[0042] In other possible embodiments, a pressure relief valve, liquid level monitoring and temperature monitoring can be installed on the tank. Among them, the pressure relief valve is used to prevent excessive pressure caused by temperature changes or unexpected situations. The design of the pressure relief valve should ensure that the pressure can be released quickly when necessary to prevent the tank from bursting. Liquid level monitoring can monitor the storage amount of liquid nitrogen in real time to prevent overfilling or emptying the tank. The liquid level sensor should be able to work normally in a low temperature environment. Temperature monitoring can detect the failure of insulation materials or loss of cold in time to ensure the safe operation of the system.

[0043] Reference Figure 1 In some embodiments of the present invention, the circulating refrigeration unit includes a first circulating pipeline 330, a cold energy recovery heat exchanger 350 and a first circulating pump 370. The inlet and outlet ends of the first circulating pipeline 330 are both connected to the refrigerant storage tank 320; the cold energy recovery heat exchanger 350 is arranged on the first circulating pipeline 330 and is connected to the FLNG platform cold energy carrying device 100. The cold energy recovery heat exchanger 350 is used to further cool the refrigerant inside the refrigerant storage tank 320; the first circulating pump 370 is arranged on the first circulating pipeline 330 and is used for circulating the refrigerant inside the first circulating pipeline 330.

[0044] In the above structure, the inlet and outlet ends of the first circulation pipeline 330 are both connected to the refrigerant storage tank 320, forming a closed-loop circulation system. The main function of the first circulation pump 370 provided in the first circulation pipeline 330 is to drive the circulation of the refrigerant inside the first circulation pipeline 330. Driven by the first circulation pump 370, the refrigerant continuously flows in the first circulation pipeline 330, ensuring that the heat exchange process in the cold energy recovery heat exchanger 350 continues.

[0045] In specific applications, the refrigerant (such as liquid nitrogen) inside the refrigerant storage tank 320 is extracted through the inlet end of the first circulation pipeline 330, enters the first circulation pipeline 330, and then reaches the cold energy recovery heat exchanger 350. The energy recovery heat exchanger uses the cold energy provided by the FLNG platform cold energy carrier 100 to further cool the refrigerant in the first circulation pipeline 330. In this process, the cold energy is transferred to the refrigerant through heat exchange, so that the temperature of the refrigerant is further reduced, thereby improving its cooling capacity.

[0046] Through this design, the embodiment of the present invention can not only further cool the coolant inside the refrigerant storage tank 320 to improve its cooling capacity, but also ensure the continuous supply of cold. The combination of the first circulation pipeline 330 and the cold energy recovery heat exchanger 350 makes the use of cold energy more efficient and reduces the waste of cold energy. The use of the first circulation pump 370 ensures the stable circulation of the coolant in the system, improving the reliability and efficiency of the entire system.

[0047] Reference Figure 1 In some embodiments of the present invention, the refrigerant circulation module 400 includes a cold energy output heat exchanger 410, a second circulation pipeline 420 and a second circulation pump 430. One end of the second circulation pipeline 420 is connected to the outlet of the cold energy recovery heat exchanger 350, and the other end is connected to the inlet of the cold energy input heat exchanger 310. The cold energy output heat exchanger 410 is connected to the second circulation pipeline 420 for adjusting the temperature of the refrigerant. The second circulation pump 430 is connected to the second circulation pipeline 420 for circulating the refrigerant inside the second circulation pipeline 420. The heat exchanger 600 of the equipment to be cooled is also connected to the second circulation pipeline 420 and is located between the cold energy output heat exchanger 410 and the cold energy input heat exchanger 310.

[0048] In the above structure, the second circulation pump 430 pumps the further cooled refrigerant (such as liquid nitrogen) into the second circulation pipeline 420. The refrigerant in the second circulation pipeline 420 then flows through the cold energy output heat exchanger 410. The function of the cold energy output heat exchanger 410 is to adjust the temperature of the refrigerant to ensure that its temperature meets the requirements of the equipment to be cooled. Through the cold energy output heat exchanger 410, the temperature of the refrigerant can be accurately controlled to meet different cooling requirements. When the refrigerant flows through the heat exchanger 600 of the equipment to be cooled, the cold capacity of the refrigerant is transferred to the equipment to be cooled through the heat exchange process, thereby cooling the equipment. The temperature of the refrigerant after the heat exchange increases, and then continues to flow along the second circulation pipeline 420 and enters the cold energy input heat exchanger 310. Since the cold energy input heat exchanger 310 is connected to the FLNG platform cold energy carrier 100, the cold energy provided by the FLNG platform cold energy carrier 100 is transferred to the refrigerant through heat exchange, so that the temperature of the refrigerant is reduced again and its cooling capacity is restored. The refrigerant that has passed through the cold energy input heat exchanger 310 returns to the starting point of the second circulation pipeline 420, ready for the next cycle.

[0049] Reference Figure 1 In some embodiments of the present invention, the present invention further includes a control module 500, and the FLNG platform cold energy carrying device 100, the refrigerant generation module 200, the cold energy recovery module 300 and the coolant circulation module 400 are all connected to the control module 500 by signal, and the control module 500 is used to control the operation of the FLNG platform cold energy carrying device 100, the refrigerant generation module 200, the cold energy recovery module 300 and the coolant circulation module 400.

[0050] The cold energy input heat exchanger 310 and the cold energy recovery heat exchanger 350 are both connected to the cold energy carrying device 100 of the FLNG platform through the cold energy transmission pipeline 110, and the cold energy transmission pipeline 110 is provided with a first valve 120. A second valve 240 is provided between the nitrogen separation device 230 and the cold energy input heat exchanger 310. A third valve 340 is provided between the refrigerant storage tank 320 and the cold energy recovery heat exchanger 350. A fourth valve 360 ​​is provided between the cold energy recovery heat exchanger 350 and the first circulation pump 370. Specifically, the control module 500 is connected to the first valve 120, the second valve 240, the third valve 340 and the fourth valve 360 ​​by signal, controls the operation of the first valve 120, the second valve 240, the third valve 340 and the fourth valve 360, and ensures the safe and stable operation of the present invention.

[0051] 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling system, characterized in that: include: The FLNG platform cold energy carrying device (100) is used to provide cold energy; A refrigerant generation module (200), used for generating a refrigerant; A cold energy recovery module (300), the FLNG platform cold energy carrying device (100) and the refrigerant generation module (200) are both in communication with the cold energy recovery module (300), and the cold energy recovery module (300) is used to attach the cold energy to the refrigerant to form a coolant; The refrigerant circulation module (400) is connected to the cold energy recovery module (300), and the refrigerant circulation module (400) is used to circulate the refrigerant between the heat exchanger (600) of the equipment to be cooled and the cold energy recovery module (300).

2. The cooling system according to claim 1, characterized in that: The refrigerant generation module (200) comprises: A refrigerant forming pipeline (210), wherein an inlet end of the refrigerant forming pipeline (210) is connected to an air pump, and an outlet end of the refrigerant forming pipeline (210) is in communication with the cold energy recovery module (300); A compressor (220) connected to the refrigerant forming pipeline (210) and used to compress air entering the refrigerant forming pipeline (210); A nitrogen separation device (230) is provided in communication with the refrigerant forming pipeline (210) and is located between the compressor (220) and the cold energy recovery module (300), and is used for separating nitrogen from the air.

3. The cooling system according to claim 2, characterized in that: The cold energy recovery module (300) comprises: A cold energy input heat exchanger (310) is connected to the FLNG platform cold energy carrying device (100) and the refrigerant generation module (200), and the cold energy input heat exchanger (310) is used to attach the cold energy to the refrigerant to form a coolant; A refrigerant storage tank (320), which is in communication with the cold energy input heat exchanger (310) and is used for storing the coolant; A circulating refrigeration unit is in communication with the refrigerant storage tank (320) and the brine circulation module (400), and is used to further cool the brine.

4. The cooling system according to claim 3, characterized in that: The cycle refrigeration unit consists of: a first circulation pipeline (330), wherein both an inlet end and an outlet end of the first circulation pipeline (330) are in communication with the refrigerant storage tank (320); a cold energy recovery heat exchanger (350), which is disposed in the first circulation pipeline (330) and is in communication with the FLNG platform cold energy carrying device (100), the cold energy recovery heat exchanger (350) being used to further cool the coolant inside the refrigerant storage tank (320); The first circulation pump (370) is provided in the first circulation pipeline (330) and is used for circulating the coolant inside the first circulation pipeline (330).

5. The cooling system according to claim 4, characterized in that: The coolant circulation module (400) comprises: a second circulation pipeline (420), one end of which is in communication with the outlet of the cold energy recovery heat exchanger (350), and the other end of which is in communication with the inlet of the cold energy input heat exchanger (310); A cold energy output heat exchanger (410), provided in the second circulation pipeline (420), for adjusting the temperature of the coolant; The second circulation pump (430) is provided in the second circulation pipeline (420) and is used to circulate the coolant inside the second circulation pipeline (420).

6. The cooling system according to claim 4, characterized in that: The cold energy input heat exchanger (310) and the cold energy recovery heat exchanger (350) are both connected to the FLNG platform cold energy carrying device (100) via a cold energy transmission pipeline (110), and a first valve (120) is provided on the cold energy transmission pipeline (110).

7. The cooling system according to claim 3, characterized in that: A second valve (240) is provided in communication between the nitrogen separation device (230) and the cold energy input heat exchanger (310).

8. The cooling system according to claim 4, characterized in that: A third valve (340) is provided in communication between the refrigerant storage tank (320) and the cold energy recovery heat exchanger (350).

9. The cooling system according to claim 4, characterized in that: A fourth valve (360) is provided between the cold energy recovery heat exchanger (350) and the first circulation pump (370).

10. The cooling system according to any one of claims 1 to 9, characterized in that: The invention also comprises a control module (500); the FLNG platform cold energy carrying device (100), the refrigerant generation module (200), the cold energy recovery module (300) and the secondary refrigerant circulation module (400) are all connected to the control module (500) by signals; the control module (500) is used to control the operation of the FLNG platform cold energy carrying device (100), the refrigerant generation module (200), the cold energy recovery module (300) and the secondary refrigerant circulation module (400).

Images