Seawater desalination control system, method and device

Abstract

The invention relates to a seawater desalination control system, method and device, and belongs to the technical field of seawater desalination, the system comprises a filtering device, the first end of the filtering device is connected with a seawater input port of the system, and the second end of the filtering device is connected with a concentrated water output port of the system; the first end of the first reverse osmosis device is connected with the third end of the filtering device, and the second end of the first reverse osmosis device is connected with a concentrated water output port of the system; the first end of the second reverse osmosis device is connected with the third end of the first osmosis device, the second reverse osmosis device is connected with the concentrated water output port of the system, the third end of the second reverse osmosis device is connected with the fresh water output port of the system, and the fourth end of the second reverse osmosis device is connected with the fresh water interface of the system; the controller is electrically connected with the filtering device, the first reverse osmosis device and the second reverse osmosis device respectively.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of seawater desalination, and more specifically, to a control system, method, and device for seawater desalination. Background Art

[0002] With the rapid development of seawater desalination technology, desalinated water can provide living water for areas lacking fresh water. At present, existing seawater desalination equipment can desalinate seawater using filtering devices and reverse osmosis devices. In order to improve the utilization efficiency of fresh water, seawater desalination equipment can filter and infiltrate seawater while fusing it with fresh water. However, the efficiency of producing domestic water with a certain salinity through the seawater desalination equipment is low. Summary of the invention

[0003] One purpose of the embodiments of the present disclosure is to provide a new technical solution for controlling seawater desalination.

[0004] According to a first aspect of the present disclosure, a seawater desalination control system is provided, the system comprising: A filter device, wherein a first end of the filter device is connected to a seawater input port of the system, and a second end of the filter device is connected to a concentrated water output port of the system; a first reverse osmosis device, wherein a first end of the first reverse osmosis device is connected to a third end of the filtering device, and a second end of the first reverse osmosis device is connected to a concentrated water output port of the system; a second reverse osmosis device, wherein the first end of the second reverse osmosis device is connected to the third end of the first osmosis device, the second reverse osmosis device is connected to the concentrated water output port of the system, the third end of the second reverse osmosis device is connected to the fresh water output port of the system, and the fourth end of the second reverse osmosis device is connected to the fresh water interface of the system; A controller, wherein the controller is electrically connected to the filter device, the first reverse osmosis device, and the second reverse osmosis device, respectively, and the controller is configured to: determine the fresh water demand of the first salinity and the fresh water available of the system in response to a water distribution request of the first salinity; when the fresh water available is greater than or equal to a set threshold, first control the filter device and the first reverse osmosis device to process the seawater at the seawater inlet, and determine a first flow rate of the treated seawater; the controller is also configured to: set a second flow rate of the fresh water at the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0005] Optionally, the controller is further configured to: when the available amount of fresh water is less than a set threshold, first control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet; detect the second salinity of the seawater treated by the first reverse osmosis device; when the second salinity does not exceed the first set salinity, control the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determine a third flow rate of the treated seawater; the controller is also configured to: set a fourth flow rate of fresh water at the fresh water interface according to the second flow rate and the second salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0006] Optionally, the controller is further configured to: when the second salinity exceeds a first set salinity, control the first reverse osmosis device to output the treated seawater to a concentrated water output port of the system.

[0007] Optionally, the controller is further configured to: detect a third salinity of the seawater treated by the filter device, and when the third salinity exceeds a second set salinity, control the filter device to output the treated seawater to a concentrated water output port of the system; when the third salinity does not exceed the second set salinity, control the filter device to output the treated seawater to the first reverse osmosis device.

[0008] According to a second aspect of the present disclosure, a method for controlling seawater desalination is further provided. The method for controlling seawater desalination is based on the seawater desalination control system according to the first aspect. The execution subject of the method for controlling seawater desalination is a controller. The method comprises: In response to a water distribution request at a first salinity, determining a freshwater demand at the first salinity and an amount of freshwater available to the system; When the available amount of fresh water is greater than or equal to a set threshold, firstly controlling the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet, and determining a first flow rate of the treated seawater; According to the first flow rate and the first salinity, the second flow rate of the fresh water of the fresh water interface is set, and then the second reverse osmosis device is controlled to process the fresh water of the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0009] Optionally, after determining the fresh water demand of the first salinity and the fresh water available amount of the system in response to the water distribution request of the first salinity, the method further comprises: When the available amount of fresh water is less than a set threshold, firstly controlling the filtering device and the first reverse osmosis device to process the seawater at the seawater input port; detecting a second salinity of the seawater treated by the first reverse osmosis device; When the second salinity does not exceed the first set salinity, controlling the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determining a third flow rate of the treated seawater; According to the second flow rate and the second salinity, a fourth flow rate of fresh water from the fresh water interface is set, and then the second reverse osmosis device is controlled to process the fresh water from the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0010] Optionally, after detecting the second salinity of the seawater treated by the first reverse osmosis device, the method further comprises: When the second salinity exceeds the first set salinity, the first reverse osmosis device is controlled to output the treated seawater to the concentrated water output port of the system.

[0011] Optionally, before detecting the second salinity of the seawater treated by the first reverse osmosis device, the method further includes: detecting a third salinity of the seawater treated by the filtering device; When the third salinity exceeds the second set salinity, controlling the filtering device to output the treated seawater to the concentrated water output port of the system; When the third salinity does not exceed the second set salinity, the filtering device is controlled to output the treated seawater to the first reverse osmosis device.

[0012] According to a third aspect of the present disclosure, a control device for seawater desalination is also provided, the device comprising: a response module for determining, in response to a water distribution request of a first salinity, a demand for fresh water of the first salinity and an available amount of fresh water of the system; a determination module, configured to control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet when the available amount of fresh water is greater than or equal to a set threshold, and determine a first flow rate of the processed seawater; The control module is used to set the second flow rate of the fresh water of the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water of the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0013] According to a third aspect of the present disclosure, a seawater desalination control device is also provided, comprising a memory and a processor, wherein the memory is used to store a computer program; the processor is used to execute the computer program to implement the method described in the second aspect of the present disclosure.

[0014] According to a fourth aspect of the present disclosure, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the method according to the second aspect of the present disclosure is implemented.

[0015] A beneficial effect of the embodiments of the present disclosure is that when a user's terminal issues a water distribution request, the controller responds to the water distribution request, determines the fresh water demand of the first salinity and the fresh water available in the system, and when the fresh water available is greater than or equal to a set threshold, first controls the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet, and determines a first flow rate of the treated seawater, then sets a second flow rate of the fresh water at the fresh water interface based on the first flow rate and the first salinity, then controls the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and outputs them from the fresh water output port of the system, so as to achieve a higher efficiency in obtaining domestic water of the first salinity to meet the different needs of users.

[0016] Other features and advantages of the embodiments of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0018] Figure 1 is a schematic diagram of the composition structure of a control system that can be applied to seawater desalination according to an embodiment; Figure 2 is a flow chart of a method for controlling seawater desalination according to an embodiment; Figure 3 is a block diagram of a control device for seawater desalination according to an embodiment; Figure 4 It is a schematic diagram of the hardware structure of a seawater desalination control device according to an embodiment. DETAILED DESCRIPTION

[0019] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0020] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0021] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0022] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0023] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] <System Embodiment> Figure 1 FIG. 1 is a schematic diagram of the structure of a control system for seawater desalination that can be applied according to an embodiment. Figure 1 As shown, the system includes a filtering device, a first reverse osmosis device, a second reverse osmosis device and a controller.

[0025] A filter device, wherein a first end of the filter device is connected to a seawater input port of the system, and a second end of the filter device is connected to a concentrated water output port of the system; In the present application, the filtering device can pre-treat and remove impurities, and intercept some large particles of impurities by physical means to provide relatively clean seawater.

[0026] a first reverse osmosis device, wherein a first end of the first reverse osmosis device is connected to a third end of the filtering device, and a second end of the first reverse osmosis device is connected to a concentrated water output port of the system; In the present application, the first reverse osmosis device can remove salt and impurities from the seawater treated by the filtration device. The first reverse osmosis device can be a reverse osmosis membrane or a reverse osmosis membrane group composed of multiple reverse osmosis membranes, which is not limited here.

[0027] a second reverse osmosis device, wherein the first end of the second reverse osmosis device is connected to the third end of the first osmosis device, the second reverse osmosis device is connected to the concentrated water output port of the system, the third end of the second reverse osmosis device is connected to the fresh water output port of the system, and the fourth end of the second reverse osmosis device is connected to the fresh water interface of the system; In the present application, the second reverse osmosis device can further remove salt and impurities from the seawater treated by the first reverse osmosis device. The second reverse osmosis device can be a reverse osmosis membrane or a reverse osmosis membrane group composed of multiple reverse osmosis membranes, which is not limited here.

[0028] A controller, wherein the controller is electrically connected to the filter device, the first reverse osmosis device, and the second reverse osmosis device, respectively, and the controller is configured to: determine the fresh water demand of the first salinity and the fresh water available of the system in response to a water distribution request of the first salinity; when the fresh water available is greater than or equal to a set threshold, first control the filter device and the first reverse osmosis device to process the seawater at the seawater inlet, and determine a first flow rate of the treated seawater; the controller is also configured to: set a second flow rate of the fresh water at the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0029] In the present application, the controller can be a PLC control cabinet to control the opening and closing of the first end, the second end and the third end of the filtration device, and control the opening and closing of the first end, the second end and the third end of the first reverse osmosis device, and control the opening and closing of the first end, the second end and the third end of the second reverse osmosis device.

[0030] In the present application, the water distribution request may be sent from the user's terminal to the controller, and the user may edit the domestic water required to be within a certain salinity range and send it to the controller, the salinity range being the first salinity.

[0031] In the present application, the controller is also electrically connected to a water level sensor of the fresh water storage container to determine the available amount of fresh water.

[0032] In the present application, the threshold value can be set to 10%, 20% or 30%, etc. For example, the fresh water in the fresh water storage container can be replenished in a time period, and the time period is 5 days and the threshold value is set to 10%. The fresh water usage per day is 20%, and when the total storage capacity on the second day is 95%, then the fresh water available on the second day is 15%.

[0033] In the present application, the seawater desalination control system is configured with a first flow meter, and the first flow meter can detect the first flow at the third end of the first reverse osmosis device.

[0034] In the present application, for the same salinity, when the first flow rate is larger, the second flow rate can be increased at the same time; when the first flow rate is smaller, the second flow rate can be reduced at the same time. The specific ratio of the treated seawater and fresh water to form the domestic water of the first salinity can be set manually and is not limited here.

[0035] In other words, when the user's terminal sends a water distribution request, the controller responds to the water distribution request, determines the fresh water demand of the first salinity and the fresh water available in the system, and when the fresh water available is greater than or equal to the set threshold, first controls the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet, and determines the first flow rate of the treated seawater, and then sets the second flow rate of the fresh water at the fresh water interface according to the first flow rate and the first salinity, and then controls the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and outputs them from the fresh water output port of the system, so as to achieve more efficient acquisition of domestic water with a first salinity to meet the different needs of users.

[0036] In some embodiments, the controller is further configured to: when the available amount of fresh water is less than a set threshold, first control the filtration device and the first reverse osmosis device to process the seawater at the seawater inlet; detect the second salinity of the seawater treated by the first reverse osmosis device; when the second salinity does not exceed the first set salinity, control the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determine the third flow rate of the treated seawater; the controller is also configured to: set the fourth flow rate of fresh water at the fresh water interface according to the second flow rate and the second salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0037] In the present application, the seawater desalination control system is equipped with a first salinity meter, and the first salinity meter can detect the second salinity of the third end of the first reverse osmosis device.

[0038] In the present application, the first set salinity can be set manually and is not limited here.

[0039] In other words, when the available amount of fresh water is less than a set threshold, it is necessary to control the first salinity meter to detect the second salinity of the treated seawater, so as to obtain domestic water of the first salinity using less fresh water.

[0040] In some embodiments, the controller is further configured to: when the second salinity exceeds a first set salinity, control the first reverse osmosis device to output the treated seawater to a concentrated water output port of the system.

[0041] In other words, by sending seawater with a second salinity exceeding the first set salinity to the concentrated water outlet, seawater exceeding the first set salinity can be discharged, so as to further achieve the goal of obtaining domestic water with the first salinity using less fresh water.

[0042] In some embodiments, the controller is further configured to: detect a third salinity of the seawater treated by the filter device, and when the third salinity exceeds a second set salinity, control the filter device to output the treated seawater to the concentrated water output port of the system; when the third salinity does not exceed the second set salinity, control the filter device to output the treated seawater to the first reverse osmosis device.

[0043] In the present application, the second set salinity can be set manually and is not limited here.

[0044] In other words, by sending seawater with a third salinity exceeding the second set salinity to the concentrated water outlet, the seawater exceeding the second set salinity can be discharged, so as to further achieve the goal of obtaining domestic water with the first salinity using less fresh water.

[0045] As used in the embodiments of the present disclosure, the memory of the controller 400 is used to store a computer program, which is used to control the processor of the controller 400 to operate to implement the control method of seawater desalination according to any embodiment. A technician can design a computer program according to the scheme of the embodiments of the present disclosure. How the computer program controls the processor to operate is well known in the art, so it will not be described in detail here.

[0046] <Method Example> Figure 2 is a flow chart of a method for controlling seawater desalination according to an embodiment. Figure 1 Middle controller.

[0047] like Figure 2 As shown, the seawater desalination control method of this embodiment may include the following steps S210 to S230: Step S210 , in response to a water distribution request of a first salinity, determining a demand for fresh water of the first salinity and an available amount of fresh water of the system.

[0048] Step S220, when the available amount of fresh water is greater than or equal to a set threshold, first control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet, and determine a first flow rate of the treated seawater.

[0049] In some embodiments, after step S210, the method further includes the following steps S310 to S340: Step S310, when the available amount of fresh water is less than a set threshold, first control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet.

[0050] Step S320, detecting a second salinity of the seawater treated by the first reverse osmosis device.

[0051] Step S330, when the second salinity does not exceed the first set salinity, controlling the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determining a third flow rate of the treated seawater.

[0052] In some embodiments, after step S320, the method further includes the following step S410: Step S410: When the second salinity exceeds the first set salinity, the first reverse osmosis device is controlled to output the treated seawater to the concentrated water output port of the system.

[0053] In some embodiments, after step S320, the method further includes the following steps S510 to S530: Step S510, detecting the third salinity of the seawater treated by the filtering device.

[0054] Step S520, when the third salinity exceeds the second set salinity, controlling the filtering device to output the treated seawater to the concentrated water output port of the system.

[0055] Step S530, when the third salinity does not exceed the second set salinity, controlling the filtering device to output the treated seawater to the first reverse osmosis device.

[0056] Step S340, setting a fourth flow rate of fresh water from the fresh water interface according to the second flow rate and the second salinity, and then controlling the second reverse osmosis device to process the fresh water from the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0057] Step S230, setting a second flow rate of fresh water from the fresh water interface according to the first flow rate and the first salinity, and then controlling the second reverse osmosis device to process the fresh water from the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0058] <Equipment Example 1> Figure 3 FIG. 1 is a schematic block diagram of a control device for seawater desalination according to an embodiment. Figure 3 As shown, the seawater desalination control device 30 includes: a response module 31 for determining the fresh water demand of the first salinity and the fresh water available of the system in response to a water distribution request of the first salinity; The determination module 32 is used to control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet when the available amount of fresh water is greater than or equal to a set threshold, and determine a first flow rate of the treated seawater; The control module 33 is used to set the second flow rate of the fresh water of the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water and treated seawater of the fresh water interface and output them from the fresh water output port of the system.

[0059] Optionally, the seawater desalination control device 30 also includes an output module, which is used to control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet when the available amount of fresh water is less than a set threshold; detect the second salinity of the seawater treated by the first reverse osmosis device; when the second salinity does not exceed the first set salinity, control the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determine the third flow rate of the treated seawater; the controller is also configured to: set the fourth flow rate of fresh water at the fresh water interface according to the second flow rate and the second salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

[0060] Optionally, the seawater desalination control device 30 further includes a concentrated water output module, which is used to control the first reverse osmosis device to output the treated seawater to the concentrated water output port of the system when the second salinity exceeds the first set salinity.

[0061] Optionally, the seawater desalination control device 30 also includes a detection module for detecting a third salinity of the seawater treated by the filter device, and when the third salinity exceeds the second set salinity, controlling the filter device to output the treated seawater to the concentrated water output port of the system; when the third salinity does not exceed the second set salinity, controlling the filter device to output the treated seawater to the first reverse osmosis device.

[0062] The seawater desalination control device 30 may be a controller 400 .

[0063] <Equipment Example 2> Figure 4 It is a schematic diagram of the hardware structure of a seawater desalination control device according to another embodiment.

[0064] like Figure 4 As shown, the desalination control device 40 includes a processor 41 and a memory 42, wherein the memory 42 is used to store an executable computer program, and the processor 41 is used to execute a method as described in any of the above method embodiments according to the control of the computer program.

[0065] Each module of the above seawater desalination control device 30 may be implemented by the processor 41 in this embodiment executing a computer program stored in the memory 42, or may be implemented by other structures, which is not limited here.

[0066] The present invention may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present invention.

[0067] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the above. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0068] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0069] The computer program instructions for performing the operation of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet). In some embodiments, by using the state information of the computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit may execute the computer-readable program instructions, thereby implementing various aspects of the present invention.

[0070] Various aspects of the present invention are described herein with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each box of the flowchart and / or block diagram and the combination of the boxes in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0071] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0072] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0073] The flow charts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a part of a module, a program segment or an instruction, and a part of the module, a program segment or an instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.

[0074] Embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A seawater desalination control system, characterized in that: The system comprises: A filter device, wherein a first end of the filter device is connected to a seawater input port of the system, and a second end of the filter device is connected to a concentrated water output port of the system; a first reverse osmosis device, wherein a first end of the first reverse osmosis device is connected to a third end of the filtering device, and a second end of the first reverse osmosis device is connected to a concentrated water output port of the system; a second reverse osmosis device, wherein the first end of the second reverse osmosis device is connected to the third end of the first osmosis device, the second reverse osmosis device is connected to the concentrated water output port of the system, the third end of the second reverse osmosis device is connected to the fresh water output port of the system, and the fourth end of the second reverse osmosis device is connected to the fresh water interface of the system; A controller, wherein the controller is electrically connected to the filter device, the first reverse osmosis device, and the second reverse osmosis device, respectively, and the controller is configured to: determine the fresh water demand of the first salinity and the fresh water available of the system in response to a water distribution request of the first salinity; when the fresh water available is greater than or equal to a set threshold, first control the filter device and the first reverse osmosis device to process the seawater at the seawater inlet, and determine a first flow rate of the treated seawater; the controller is also configured to: set a second flow rate of the fresh water at the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

2. The system according to claim 1, characterized in that The controller is further configured to: when the available amount of fresh water is less than a set threshold, first control the filtering device and the first reverse osmosis device to process the seawater at the seawater input port; detect the second salinity of the seawater treated by the first reverse osmosis device; when the second salinity does not exceed the first set salinity, control the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determine a third flow rate of the treated seawater; the controller is further configured to: set a fourth flow rate of fresh water at the fresh water interface according to the second flow rate and the second salinity, and then control the second reverse osmosis device to process the fresh water at the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

3. The system according to claim 2, characterized in that The controller is further configured to: when the second salinity exceeds a first set salinity, control the first reverse osmosis device to output the treated seawater to a concentrated water output port of the system.

4. The system according to claim 2, characterized in that The controller is further configured to: detect a third salinity of the seawater treated by the filter device, and when the third salinity exceeds a second set salinity, control the filter device to output the treated seawater to a concentrated water output port of the system; and when the third salinity does not exceed the second set salinity, control the filter device to output the treated seawater to the first reverse osmosis device.

5. A seawater desalination control method, the seawater desalination control method is based on the seawater desalination control system according to any one of claims 1 to 4, the execution subject of the seawater desalination control method is a controller, characterized in that: The method comprises: In response to a water distribution request at a first salinity, determining a freshwater demand at the first salinity and an amount of freshwater available to the system; When the available amount of fresh water is greater than or equal to a set threshold, firstly controlling the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet, and determining a first flow rate of the treated seawater; According to the first flow rate and the first salinity, the second flow rate of the fresh water of the fresh water interface is set, and then the second reverse osmosis device is controlled to process the fresh water of the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

6. The method according to claim 5, characterized in that After determining the fresh water demand of the first salinity and the fresh water available amount of the system in response to the water distribution request of the first salinity, the method further comprises: When the available amount of fresh water is less than a set threshold, firstly controlling the filtering device and the first reverse osmosis device to process the seawater at the seawater input port; detecting a second salinity of the seawater treated by the first reverse osmosis device; When the second salinity does not exceed the first set salinity, controlling the first reverse osmosis device to output the treated seawater to the second reverse osmosis device, and determining a third flow rate of the treated seawater; According to the second flow rate and the second salinity, a fourth flow rate of fresh water from the fresh water interface is set, and then the second reverse osmosis device is controlled to process the fresh water from the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

7. The method according to claim 6, characterized in that After detecting the second salinity of the seawater treated by the first reverse osmosis device, the method further includes: When the second salinity exceeds the first set salinity, the first reverse osmosis device is controlled to output the treated seawater to the concentrated water output port of the system.

8. The method according to claim 6, characterized in that Before detecting the second salinity of the seawater treated by the first reverse osmosis device, the method further includes: detecting a third salinity of the seawater treated by the filtering device; When the third salinity exceeds the second set salinity, controlling the filtering device to output the treated seawater to the concentrated water output port of the system; When the third salinity does not exceed the second set salinity, the filtering device is controlled to output the treated seawater to the first reverse osmosis device.

9. A seawater desalination control device, characterized in that: The device comprises: a response module for determining, in response to a water distribution request of a first salinity, a demand for fresh water of the first salinity and an available amount of fresh water of the system; a determination module, configured to control the filtering device and the first reverse osmosis device to process the seawater at the seawater inlet when the available amount of fresh water is greater than or equal to a set threshold, and determine a first flow rate of the processed seawater; The control module is used to set the second flow rate of the fresh water of the fresh water interface according to the first flow rate and the first salinity, and then control the second reverse osmosis device to process the fresh water of the fresh water interface and the treated seawater, and output them from the fresh water output port of the system.

10. A seawater desalination control device, characterized in that: The method comprises a processor connected to a memory, wherein the memory is used to store a computer program; the processor is used to execute the computer program to implement the method according to any one of claims 4 to 8.

Images