Energy supply system for ship, energy management method, and electronic device

Abstract

The invention provides an energy supply system of a ship, an energy management method and electronic equipment. The energy supply system comprises an energy output end used for being externally connected with a ship load; the at least two stages of energy subsystems are used for providing energy for the ship load through the energy output end, and at least one stage of energy subsystem in the at least two stages of energy subsystems is used for converting waste heat generated in the operation process of the ship equipment into energy; and the processor monitors the energy demand of the ship load, selects a target energy subsystem matched with the energy demand from the at least two stages of energy subsystems, and controls the target energy subsystem to provide energy for the ship load. The energy demand of the ship load can be detected in real time, the energy subsystem matched with the energy demand is controlled to provide energy for the ship load, and the energy demand of the ship load is met. And the energy subsystem can convert waste heat generated by the ship equipment into energy, full utilization of the waste heat is achieved, and therefore the comprehensive heat efficiency of the ship is improved.

Description

Technical Field

[0001] The present invention discloses an energy supply system, and more particularly relates to an energy supply system, an energy management method, and electronic equipment for a ship. Background Art

[0002] The requirement to reduce greenhouse gas emissions and the increasingly serious environmental pollution problem have brought tremendous pressure to the shipping industry. At the same time, reducing fuel consumption and saving energy as an important means to control ship operating costs and achieve green and sustainable development have also received widespread attention.

[0003] At present, ships, especially large ocean-going cruise ships, have high energy demands for heat, cooling, electricity, etc. The energy demands vary greatly under different seasons and working conditions, and the waste heat emissions of ships are high. How to improve the comprehensive thermal efficiency of ships, improve the economic performance of ship power, meet the requirements of EEDI (Energy Efficiency Design Index) indicators, and reduce carbon emissions are urgent issues that need to be solved. Summary of the invention

[0004] The technical problem to be solved by the present disclosure is to overcome the above-mentioned defects in the prior art and to provide an energy supply system, an energy management method and an electronic device for a ship.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] In a first aspect, an energy supply system for a ship is provided, comprising:

[0007] Energy output terminal, used for external ship load;

[0008] At least two energy subsystems are used to provide energy to the ship load through the energy output end, and at least one of the at least two energy subsystems converts waste heat generated during the operation of the ship equipment into energy;

[0009] A processor monitors the energy demand of the ship load, selects a target energy subsystem that matches the energy demand from the at least two levels of energy subsystems, and controls the target energy subsystem to provide energy for the ship load.

[0010] Optionally, the waste heat includes high-temperature flue gas having a temperature greater than a first temperature threshold and / or high-temperature water having a temperature greater than a second temperature threshold; the at least two-stage energy subsystem includes:

[0011] A first-level energy subsystem, wherein the input end of the first-level energy subsystem is connected to the high-temperature flue gas output end of the ship equipment, and the output end of the first-level energy subsystem is connected to the energy output end; the first-level energy subsystem is used to convert the high-temperature flue gas into energy;

[0012] and / or, a second-level energy subsystem, wherein the input end of the second-level energy subsystem is connected to the high-temperature water output end of the ship equipment, and the output end of the second-level energy subsystem is connected to the energy output end; the second-level energy subsystem is used to convert the high-temperature water into energy;

[0013] And / or, a third-level energy subsystem, the output end of the third-level energy subsystem is connected to the energy output end; the third-level energy subsystem is used to output self-generated energy to the energy output end.

[0014] Optionally, the first-level energy subsystem includes:

[0015] a first energy conversion branch, the first energy conversion branch comprising a first pipeline and a waste heat power generation device arranged on the first pipeline; one end of the first pipeline is connected to the input end of the first-level energy subsystem, the other end of the first pipeline is connected to the input end of the waste heat power generation device, and the waste heat power generation device is also electrically connected to the energy output end; the waste heat power generation device is used to convert the high-temperature flue gas into electrical energy;

[0016] and / or, a second energy conversion branch, the second energy conversion branch comprising a second pipeline and an absorption chiller disposed on the second pipeline; one end of the second pipeline is connected to the input end of the first-level energy subsystem, and the other end of the second pipeline is connected to the output end of the second-level energy subsystem; the absorption chiller is used to convert the high-temperature flue gas into cold air;

[0017] and / or, a third energy conversion branch, the third energy conversion branch comprising a third pipeline and a heat storage tank disposed on the third pipeline; one end of the third pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the second-level energy subsystem; the heat storage tank is used to store excess waste heat of the first-level energy subsystem;

[0018] And / or, a fourth energy conversion branch, the fourth energy conversion branch comprising a fifth pipeline and an exhaust heat exchanger arranged on the fifth pipeline, one end of the fifth pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the first-level energy subsystem.

[0019] Optionally, when the first-level energy subsystem includes the third energy conversion branch, the energy supply system further includes a solar thermal collector; the solar thermal collector is used to collect solar heat and store it in the heat storage tank.

[0020] Optionally, the second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger disposed on the fifth pipeline.

[0021] Optionally, the third energy conversion branch includes a sixth pipeline and a water heater, one end of the sixth pipeline is connected to the output end of the water heater, and the other end of the sixth pipeline is connected to the energy output end.

[0022] Optionally, the first-level energy subsystem is connected to the second-level energy subsystem via a first heat exchanger and a first valve; the processor is electrically connected to the first valve;

[0023] and / or, the heat storage tank is connected to the second-stage energy subsystem via a second heat exchanger;

[0024] And / or, a first pump is provided at the input end of the second heat exchanger;

[0025] And / or, a second pump is provided at the output end of the second heat exchanger; the processor is electrically connected to the first pump and the second pump;

[0026] And / or, the second energy conversion branch is connected to the waste heat power generation device through a second valve; the second valve is electrically connected to the processor.

[0027] Optionally, the energy subsystem is set with a priority; and the processor selects a target energy subsystem that matches the energy demand according to the priority.

[0028] In a second aspect, an energy management method is provided, which is applied to the energy supply system of the ship according to the first aspect; the energy management method comprises:

[0029] monitoring energy requirements of said vessel loads;

[0030] A target energy subsystem matching the energy demand is selected from the at least two levels of energy subsystems, and the target energy subsystem is controlled to provide energy for the ship load.

[0031] In a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor implements the energy management method described in the second aspect when executing the computer program.

[0032] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0033] The positive progress of the present disclosure is that the present disclosure can detect the energy demand of the ship load in real time, and control the energy subsystem that matches the energy demand to provide energy for the ship load to meet the energy demand of the ship load. Moreover, the energy subsystem can convert the waste heat generated during the operation of the ship equipment into energy and provide it to the ship load, so as to make full use of the waste heat, thereby improving the comprehensive thermal efficiency of the ship and achieving the purpose of reducing energy consumption and reducing ship emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a module of an energy supply system for a ship provided by an exemplary embodiment of the present disclosure;

[0035] Figure 2 A schematic structural diagram of an energy supply system for a ship provided by an exemplary embodiment of the present disclosure;

[0036] Figure 3 A schematic structural diagram of another energy supply system for a ship provided by an exemplary embodiment of the present disclosure;

[0037] Figure 4 A flow chart of an energy management method provided for an exemplary embodiment of the present disclosure;

[0038] Figure 5 The present invention provides a schematic structural diagram of an electronic device according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0040] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0041] Ships, especially large ocean-going cruise ships, have high energy demands for heat, cooling, electricity, etc., and the energy demands vary greatly under different seasons and working conditions. For example, the peak of hot water consumption in cabins is in the early and late stages, the hot water consumption in the kitchen and restaurant is mostly in the preparation stage of three meals, and the laundry is mostly at night. According to statistics, the waste heat loss of ship engines (ship equipment) is as high as 30-50%, and the waste heat loss discharged by ship equipment under different working conditions in different seasons varies greatly. The load state of the ship engine is different when waiting for passengers in port, sailing out of port, cruising at sea, and returning to port safely in an emergency, and thus the waste heat loss is different. New energy sources such as offshore solar energy are widely distributed, easy to obtain at sea, have huge potential, and their related utilization technologies are becoming increasingly mature. Failure to reasonably utilize offshore solar energy will cause waste. Therefore, it is necessary to develop an energy supply system for ships with intelligent multi-level heat management, fully recycle and utilize the waste heat on ships, realize intelligent automatic control of graded recovery and management of waste heat, and intelligently switch different working modes.

[0042] join Figure 1 and Figure 2 The energy supply system of a ship provided by the embodiment of the present disclosure includes an energy output terminal A, a processor 11 and at least two levels of energy subsystems 12. The processor 11 is connected to each level of energy subsystem 12, and specifically, the processor 11 is connected to each level of energy subsystem 12. The components are such as valves, pumps, etc. The devices are such as energy conversion devices.

[0043] The energy output terminal A is used to connect to an external ship load. The ship load can be any load on the ship that requires energy supply, such as a heater that requires heat supply, an electrical appliance that requires power supply, etc. The number of energy output terminals A included in the energy supply system can be set according to actual needs, and the interface type of the energy output terminal A matches the interface type of the ship load.

[0044] The at least two-stage energy subsystem 12 is used to provide energy to the ship load through the energy output terminal A, and at least one of the at least two-stage energy subsystems converts waste heat generated during the operation of the ship equipment into energy.

[0045] The number of energy subsystems included in the energy supply system can be set according to actual needs, and can be two, three, four, or even more. All or part of the energy subsystems included in the energy supply system are provided with energy conversion devices, which can convert the waste heat generated during the operation of the ship equipment into energy and provide it to the ship load. Of course, the sources of waste heat used by different energy subsystems can be the same or different, and the embodiments of the present disclosure are not particularly limited to this. Energy conversion devices include heat exchangers, generators, absorption chillers, waste boilers, etc.

[0046] When some energy subsystems include energy conversion devices, the remaining energy subsystems may include consumption-type energy generation devices, which consume energy to generate energy required by the ship load and provide it to the ship load. Consumable energy generation devices include water heaters, boilers, etc.

[0047] The ship equipment may be, for example, an engine, a diesel engine, etc. Waste heat includes high-temperature flue gas and / or high-temperature water discharged by the ship equipment. High-temperature flue gas is flue gas with a temperature greater than a first temperature threshold. The first temperature threshold can be set according to actual conditions, for example, the first temperature threshold is 100°. High-temperature water is water with a temperature greater than a second temperature threshold. The second temperature threshold can be set according to actual conditions, for example, the second temperature threshold is 80°.

[0048] For example, the high-temperature flue gas emitted by the engine can reach [300°C, 400°C]. The high-temperature flue gas can be converted into 180°C saturated steam or 120°C high-pressure hot water for ship loads / users through the waste boiler (energy conversion device). The high-temperature cooling water of the cylinder jacket of the diesel engine can generate 90°C high-temperature water for ship loads / users through the heat exchanger (energy conversion device). In this embodiment, waste heat of different temperatures and types can be recovered to the greatest extent, realizing the cascade recovery of waste heat and improving the recovery efficiency.

[0049] The processor 11 monitors the energy demand of the ship load, selects a target energy subsystem matching the energy demand from at least two levels of energy subsystems, and controls the target energy subsystem to provide energy for the ship load.

[0050] The target energy subsystem is the energy subsystem selected to provide energy for the ship load. It can be understood that the energy subsystem selected to provide energy for the ship load is determined according to the energy supply capacity of the energy subsystem and the energy demand of the ship load. The processor can monitor the energy demand of the ship load in real time and intelligently switch different working modes to provide the required energy for the ship.

[0051] The energy supply system of this embodiment can detect the energy demand of the ship load in real time, and control the energy subsystem that matches the energy demand to provide energy for the ship load to meet the energy demand of the ship load. In addition, the energy subsystem can convert the waste heat generated during the operation of the ship equipment into energy and provide it to the ship load, so as to make full use of the waste heat, thereby improving the comprehensive thermal efficiency of the ship and achieving the purpose of reducing energy consumption and reducing ship emissions.

[0052] In one embodiment, the processor 11 is deployed with an intelligent control system, which realizes intelligent and automatic control of graded heat recovery and management utilization, and intelligent switching of different working modes.

[0053] In one embodiment, see Figure 2 , at least two levels of energy subsystems include at least one of the following: a first-level energy subsystem, a second-level energy subsystem, and a third-level energy subsystem. The input end of the first-level energy subsystem is connected to the high-temperature flue gas output end of the ship equipment, and the output end of the first-level energy subsystem is connected to the energy output end. The first-level energy subsystem can utilize the high-temperature flue gas and convert it into energy. The input end of the second-level energy subsystem is connected to the high-temperature water output end of the ship equipment, and the output end of the second-level energy subsystem is connected to the energy output end. The second-level energy subsystem can convert high-temperature water into energy. The output end of the third-level energy subsystem is connected to the energy output end. The third-level energy subsystem needs to consume energy to produce energy by itself, and then output it to the energy output end. The energy consumed by the third-level energy subsystem can include but is not limited to coal, carbon, electricity, etc.

[0054] It can be understood that energy demand includes energy type and demand amount, and energy type can include but is not limited to heat energy, cooling air, electric energy, etc. The so-called matching includes energy type matching and demand amount matching. For example, assuming that the first-level energy subsystem can provide heat energy, electric energy and cooling air and the maximum supply of heat energy is E1, the second-level energy subsystem can provide heat and the maximum supply of heat energy is E2, and the third-level energy subsystem can provide heat and the maximum supply of heat energy is E3, E3>E1+E2; if the ship load requires electric energy, the first-level energy subsystem is controlled to convert high-temperature flue gas into electric energy and provide it to the ship load; if the ship load requires thermal energy, the thermal energy demand e>E1 and e<E1+E2, then the first-level energy subsystem is controlled to convert high-temperature flue gas into thermal energy and provide it to the ship load, and at the same time, the second-level energy subsystem is controlled to convert high-temperature water into thermal energy and provide it to the ship load.

[0055] It should be noted that Figure 2 There are only three-level energy subsystems and three ship loads (ship load a, ship load b and ship load c). In actual application, the number of energy subsystems and ship loads can be set according to actual needs.

[0056] In this embodiment, on the one hand, the first-level energy subsystem and the second-level energy subsystem can convert the high-temperature flue gas and high-temperature water discharged by the ship equipment into energy and provide it to the ship load, so as to realize the rational use of high-temperature flue gas and high-temperature water, integrate various energy-saving measures, and improve the comprehensive thermal efficiency of the ship. On the other hand, intelligent automatic control of the hierarchical recovery and multi-level management of high-temperature flue gas and high-temperature water is realized, and different working modes are intelligently switched according to the needs of the ship load to provide energy for the ship load, so as to realize sufficient energy supply, thereby improving the economic performance of the ship power, meeting the requirements of the EEDI (Ship Energy Efficiency Design Index) index, and reducing carbon emissions.

[0057] In other implementations, the energy subsystems at each level can also provide energy to each other. For example, the first-level energy subsystem can also provide energy to the second-level energy subsystem and the third-level energy subsystem.

[0058] In one embodiment, the first-level energy subsystem includes at least one of the following: a first energy conversion branch, a second energy conversion branch, a third energy conversion branch, and a fourth energy conversion branch.

[0059] The first energy conversion branch includes a first pipeline and a waste heat power generation device arranged on the first pipeline; one end of the first pipeline is connected to the input end of the first-level energy subsystem, and the other end of the first pipeline is connected to the input end of the waste heat power generation device, and the waste heat power generation device is also electrically connected to the energy output end; the waste heat power generation device is used to convert the high-temperature flue gas into electrical energy and supply power to the ship load through the energy output end. The waste heat power generation device can be incorporated into the ship's power grid to supplement the power demand of the ship load.

[0060] The second energy conversion branch includes a second pipeline and an absorption chiller disposed on the second pipeline; one end of the second pipeline is connected to the input end of the first-level energy subsystem, and the other end of the second pipeline is connected to the output end of the second-level energy subsystem; the absorption chiller is used to convert high-temperature flue gas into cold air. In summer conditions, the absorption chiller is started and converts high-temperature flue gas into cold air to supplement the large amount of cold air supply demand on board.

[0061] The third energy conversion branch includes a third pipeline and a heat storage tank arranged on the third pipeline; one end of the third pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the second-level energy subsystem; the heat storage tank is used to store excess waste heat of the first-level energy subsystem to output heat when the ship load or other energy subsystems have heat usage requirements.

[0062] The fourth energy conversion branch includes a fourth pipeline and an exhaust heat exchanger disposed on the fourth pipeline, one end of the fourth pipeline is connected to the input end of the first-stage energy subsystem, and the other end of the fourth pipeline is connected to the output end of the first-stage energy subsystem. The exhaust heat exchanger can convert the waste heat of the high-temperature flue gas into heat energy and provide it to at least one of the waste heat power generation device, the absorption chiller, the heat storage tank, the second-stage energy subsystem, and the load ship.

[0063] In order to realize that the fourth energy conversion branch provides energy to the second energy subsystem, the first energy subsystem is connected to the second energy subsystem through the first heat exchanger and the first valve. The processor is electrically connected to the first valve, and the processor can realize that the exhaust heat exchanger of the fourth energy conversion branch provides heat energy to the second energy subsystem by controlling the opening of the first valve.

[0064] In this embodiment, it is possible to meet the various energy types of heat, electricity and cooling of ship loads, realize the combined energy supply of heat, electricity and cooling, maximize the comprehensive thermal efficiency of the ship, and achieve the purpose of reducing energy consumption and reducing ship emissions.

[0065] In one embodiment, when the first-level energy subsystem includes a third energy conversion branch, the energy supply system further includes a solar thermal collector; the solar thermal collector is used to collect solar heat and store it in a heat storage tank.

[0066] In this embodiment, new clean energy is coupled and combined with energy storage technology, thereby further achieving the purpose of reducing the total fuel consumption of ships, improving the comprehensive thermal efficiency of ships, reducing energy consumption and reducing ship emissions.

[0067] In one embodiment, the heat storage tank can be connected to the second-level energy subsystem through a second heat exchanger. When the energy conversion devices of the first-level energy subsystem and the second-level energy subsystem cannot meet the energy demand of the ship load, the heat storage tank provides heat to the second-level energy subsystem, and then supplies it to the ship load for use. This makes up for the problem that the change in the heat energy demand of the ship load does not match the change in the waste heat of the ship equipment, and ensures the stability of the heating capacity as much as possible.

[0068] In other implementations, the solar collector can also be combined with a generator to achieve solar power generation, and the generated electricity is provided to the ship load for use.

[0069] In one embodiment, the second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger (WHR heat exchanger) disposed on the fifth pipeline. The WHR heat exchanger can recover the waste heat of the high-temperature water discharged by the engine and convert it into heat, which is provided to various ship loads or other energy subsystems on the ship through the fifth pipeline.

[0070] In one embodiment, the third-level energy subsystem includes a sixth pipeline and a water heater, one end of the sixth pipeline is connected to the output end of the water heater, and the other end of the sixth pipeline is connected to the energy output end.

[0071] In this embodiment, the hot water boiler can achieve heat supplement, so that when the change of the heat energy demand of the ship load does not match the change of the waste heat of the ship equipment, the stability of the heating capacity can be guaranteed as much as possible, the heat energy demand of the ship load can be met, and the stable operation of the system can be ensured.

[0072] In one embodiment, the energy subsystems are set with priorities. The processor selects a target energy subsystem that matches the thermal energy demand according to the priority. The priority of each energy subsystem can be set according to the actual situation. For example, the priority of the energy subsystem including the energy conversion device is higher than the priority of the energy subsystem including the energy consumption device. The processor preferentially controls the energy subsystem including the energy conversion device to operate and provide energy for the ship load.

[0073] For example, assuming that the priorities of the second-level energy subsystem, the first-level energy subsystem, and the third energy subsystem decrease in sequence, the second-level energy subsystem is preferentially controlled to provide energy for the ship load; when the second-level energy subsystem cannot meet the energy demand of the ship load, the first-level energy subsystem is controlled or the first-level energy subsystem is combined with the second-level energy subsystem to provide energy for the ship load; when the second-level energy subsystem and the first-level energy subsystem cannot meet the energy demand of the ship load, the third energy subsystem is controlled to provide energy for the ship load.

[0074] In one embodiment, the energy conversion branches included in the first-level energy subsystem are set with priorities. The processor controls the operating state of the energy conversion branches according to the priorities. The priorities of each energy conversion branch can be set according to actual conditions.

[0075] For example, the priority of the first energy conversion branch is higher than that of the second energy conversion branch, and the priority of the second energy conversion branch is higher than that of the third energy conversion branch. When there is no demand for heat energy or the demand for heat energy is less than the amount of heat that can be provided by the second energy conversion branch, the processor can control the operation of the second energy conversion branch to provide cold air for the ship load with cooling demand. When there is no demand for heat energy or cooling demand or the waste heat required for the heat energy demand and cooling demand is less than the waste heat discharged by the engine (i.e., there is excess waste heat), the processor can store the excess waste heat in the heat storage tank for use when needed.

[0076] In one embodiment, in order to ensure the effective operation of the energy supply system, the energy supply system also includes a heat exchanger, and valves and pumps are also provided on each pipeline. The processor or the intelligent control system deployed in the processor reasonably controls the opening and closing of valves and the start and stop of equipment on the pipeline through real-time evaluation of waste heat emissions of ship equipment and energy demand of ship loads, and real-time monitoring of physical parameters at each position of the energy supply system, thereby controlling the energy subsystem and switching between different working modes. Figure 3 , the working process of the energy supply system is further explained. Figure 3 The dashed lines represent the electrical connection relationship between components / devices, and the solid lines represent the pipeline connection relationship.

[0077] The processor 11 preferentially controls the second-level energy subsystem to provide heat energy for the ship load. The WHR heat exchanger 2 included in the second-level energy subsystem recovers the waste heat of the high-temperature flue gas of the engine to provide heat for the second-level energy subsystem, and the second-level energy subsystem supplies heat to ship load a, ship load b, ship load c and other ship loads to meet the heat energy demand of the ship loads on board.

[0078] When the heat that can be supplied by the second-level energy subsystem in real time is less than the energy demand of the ship load, the processor 11 evaluates the physical parameters such as flow rate temperature at each location of the first-level energy subsystem, controls the exhaust heat exchanger of the fourth energy conversion branch to convert the high-temperature flue gas into heat energy, and then the first-level energy subsystem provides the heat energy to the second-level energy subsystem. Specifically, the processor 11 controls the opening of the first valve 14 so that the first-level energy subsystem provides heat energy to the second-level energy subsystem through the first heat exchanger 7; and / or, the processor 11 turns on the first pump 15 and the second pump 16, and provides the heat of the heat storage tank 5 to the second-level energy subsystem through the second heat exchanger 8.

[0079] When the heat energy demand of the ship load is large in winter, the third pump 19 and the water heater 9 are turned on, and the third-level energy subsystem is operated at this time, thereby ensuring that the system can meet the heat energy demand of the ship load on board during the entire life cycle of the ship operation.

[0080] The exhaust heat exchanger 1 recovers the waste heat of the high-temperature flue gas discharged by the engine to provide heat for the first-level energy subsystem. The heat of the first-level energy subsystem is distributed in sequence by the processor 11 according to the following priorities:

[0081] a) The first-stage energy subsystem preferentially provides heat to the second-stage energy subsystem via the first heat exchanger 7 .

[0082] b) In summer, the processor 11 detects whether the first-level energy subsystem has heat redundancy, opens the corresponding valve on the pipeline, and provides heat to the absorption chiller 4 to achieve refrigeration to meet the cooling demand on board.

[0083] c) When the processor 11 monitors and satisfies conditions (a) and (b), and the first-level energy subsystem still has heat redundancy, the valve 20 is opened to provide heat for the waste heat power generation device, thereby realizing waste heat power generation and integrating it into the onboard power grid.

[0084] The waste heat power generation device 3 uses an organic Rankine cycle to recycle waste heat and realize thermoelectric conversion. The waste heat power generation device 3 includes a preheater 17 and an evaporator 18. The waste heat power generation device 3 heats the circulating medium to a gas state through the evaporator 18 to realize power generation.

[0085] When the second-level energy subsystem still has heat redundancy after satisfying the ship load (a, b, c), the second valve 21 is controlled to transfer heat to the circulating working medium through the preheater 17 to achieve power generation.

[0086] d) The heat storage tank 5 plays a role in heat storage. After the first-level energy subsystem meets the above supply, the control valve 22 stores the remaining heat in the heat storage tank. The solar collector 6 can collect the offshore solar heat and store it in the heat storage tank 5. The heat storage tank 5 supplies heat to the second-level supply system through the second heat exchanger 8.

[0087] The waste heat emission of ship equipment can be provided by the ship equipment itself, or predicted based on the corresponding relationship between season, ship equipment operating conditions, environmental information (including temperature, humidity, etc.) and waste heat. The corresponding relationship can be represented by a curve or function fitted based on the historical operating data of the ship equipment, or by a model obtained by training a neural network based on the historical operating data of the ship equipment. The historical operating data includes the following parameters: season, ship equipment operating conditions, environmental information and waste heat.

[0088] The energy demand of the ship load can be provided by the ship load itself, or predicted based on the corresponding relationship between the season, the operating conditions of the ship load, environmental information and energy usage (characterizing the energy demand). The corresponding relationship can be represented by a curve or function fitted based on the historical operating data of the ship load, or by a model obtained by training a neural network based on the historical operating data of the ship load. The historical operating data includes the following parameters: season, operating conditions of the ship load, environmental information and energy usage.

[0089] In this embodiment, a multi-level heating system is set up, and different modes are switched intelligently to ensure that the real-time heat energy demand of the ship load is met under different operating conditions. Under the condition of meeting the heat energy demand of the ship load, energy consumption is fully saved, and the electricity and cooling capacity on board are supplemented. At the same time, the energy consumption of the whole system is evaluated and displayed in real time, making the whole system run stably and intelligently, with strong operability and intuitiveness.

[0090] The present disclosure also provides an energy management method. Figure 4 , the method is applied to the energy supply system of the ship provided in any of the above embodiments; the energy management method comprises:

[0091] Step 401: Monitor the energy demand of the ship load.

[0092] Step 402: Select a target energy subsystem that matches the energy demand from at least two levels of energy subsystems, and control the target energy subsystem to provide energy for the ship load.

[0093] In one embodiment, each energy subsystem is set with a priority. In step 102, a target energy subsystem matching the thermal energy demand is selected according to the priority of the energy subsystem.

[0094] In one embodiment, the energy conversion branches included in the first-level energy subsystem are set with priorities. In step 102, a target energy conversion branch matching the thermal energy demand is selected according to the priorities of the energy conversion branches to provide energy to the load or other energy subsystems.

[0095] Figure 5 This is a structural diagram of an electronic device shown in an example embodiment of the present disclosure, the electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor, and the processor implements the energy management method described in any of the above embodiments when executing the computer program. Figure 5 The electronic device 50 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0096] like Figure 5 As shown, the electronic device 50 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 50 may include, but are not limited to: at least one processor 51, at least one memory 52, and a bus 53 connecting different system components (including the memory 52 and the processor 51).

[0097] The bus 53 includes a data bus, an address bus, and a control bus.

[0098] The memory 52 may include a volatile memory, such as a random access memory (RAM) 521 and / or a cache memory 522 , and may further include a read-only memory (ROM) 523 .

[0099] The memory 52 may also include a program tool 525 (or utility) having a set (at least one) of program modules 524, such program modules 524 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0100] The processor 51 executes various functional applications and data processing by running the computer program stored in the memory 52, such as the energy management method provided in any of the above embodiments.

[0101] The electronic device 50 may also communicate with one or more external devices 54 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 55. In addition, the electronic device 50 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 56. As shown, the network adapter 56 communicates with other modules of the electronic device 50 via a bus 53. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 50, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0102] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0103] The embodiments of the present disclosure further provide a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the energy management method provided by any of the above embodiments is implemented.

[0104] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0105] The embodiment of the present disclosure further provides a computer program product, including a computer program, which implements any of the above energy management methods when executed by a processor.

[0106] Among them, the program code for executing the computer program product of the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0107] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A ship energy supply system, characterized in that: include: Energy output terminal, used for external ship load; At least two energy subsystems are used to provide energy to the ship load through the energy output end, and at least one of the at least two energy subsystems converts waste heat generated during the operation of the ship equipment into energy; A processor monitors the energy demand of the ship load, selects a target energy subsystem that matches the energy demand from the at least two levels of energy subsystems, and controls the target energy subsystem to provide energy for the ship load.

2. The energy supply system for a ship according to claim 1, characterized in that: The waste heat includes high-temperature flue gas having a temperature greater than a first temperature threshold and / or high-temperature water having a temperature greater than a second temperature threshold; The at least two-stage energy subsystem comprises: A first-level energy subsystem, wherein the input end of the first-level energy subsystem is connected to the high-temperature flue gas output end of the ship equipment, and the output end of the first-level energy subsystem is connected to the energy output end; the first-level energy subsystem is used to convert the high-temperature flue gas into energy; and / or, a second-level energy subsystem, wherein the input end of the second-level energy subsystem is connected to the high-temperature water output end of the ship equipment, and the output end of the second-level energy subsystem is connected to the energy output end; the second-level energy subsystem is used to convert the high-temperature water into energy; And / or, a third-level energy subsystem, the output end of the third-level energy subsystem is connected to the energy output end; the third-level energy subsystem is used to output self-generated energy to the energy output end.

3. The energy supply system for a ship according to claim 2, characterized in that: The first-level energy subsystem includes: a first energy conversion branch, the first energy conversion branch comprising a first pipeline and a waste heat power generation device arranged on the first pipeline; one end of the first pipeline is connected to the input end of the first-level energy subsystem, the other end of the first pipeline is connected to the input end of the waste heat power generation device, and the waste heat power generation device is also electrically connected to the energy output end; the waste heat power generation device is used to convert the high-temperature flue gas into electrical energy; and / or, a second energy conversion branch, the second energy conversion branch comprising a second pipeline and an absorption chiller disposed on the second pipeline; one end of the second pipeline is connected to the input end of the first-level energy subsystem, and the other end of the second pipeline is connected to the output end of the second-level energy subsystem; the absorption chiller is used to convert the high-temperature flue gas into cold air; and / or, a third energy conversion branch, the third energy conversion branch comprising a third pipeline and a heat storage tank disposed on the third pipeline; one end of the third pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the second-level energy subsystem; the heat storage tank is used to store excess waste heat of the first-level energy subsystem; And / or, a fourth energy conversion branch, the fourth energy conversion branch comprising a fifth pipeline and an exhaust heat exchanger arranged on the fifth pipeline, one end of the fifth pipeline is connected to the input end of the first-level energy subsystem, and the other end of the third pipeline is connected to the output end of the first-level energy subsystem.

4. The energy supply system for a ship according to claim 3, characterized in that: In the case where the first-level energy subsystem includes the third energy conversion branch, the energy supply system further includes a solar thermal collector; the solar thermal collector is used to collect solar heat and store it in the heat storage tank.

5. The energy supply system for a ship according to claim 3 or 4, characterized in that: The second-stage energy subsystem includes a fifth pipeline and a waste heat recovery heat exchanger disposed on the fifth pipeline.

6. The energy supply system for a ship according to claim 5, characterized in that: The third energy conversion branch includes a sixth pipeline and a water heater, one end of the sixth pipeline is connected to the output end of the water heater, and the other end of the sixth pipeline is connected to the energy output end.

7. The energy supply system for a ship according to claim 6, characterized in that: The first-level energy subsystem is connected to the second-level energy subsystem via a first heat exchanger and a first valve; the processor is electrically connected to the first valve; and / or, the heat storage tank is connected to the second-stage energy subsystem via a second heat exchanger; And / or, a first pump is provided at the input end of the second heat exchanger; And / or, a second pump is provided at the output end of the second heat exchanger; the processor is electrically connected to the first pump and the second pump; And / or, the second energy conversion branch is connected to the waste heat power generation device through a second valve; the second valve is electrically connected to the processor.

8. The energy supply system for a ship according to any one of claims 1 to 4, 6 and 7, characterized in that: The energy subsystems are provided with priorities; the processor selects a target energy subsystem that matches the energy demand according to the priorities.

9. An energy management method, characterized in that: An energy supply system for a ship according to any one of claims 1 to 8; The energy management method comprises: monitoring energy requirements of said vessel loads; A target energy subsystem matching the energy demand is selected from the at least two levels of energy subsystems, and the target energy subsystem is controlled to provide energy for the ship load.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, characterized in that: When the processor executes the computer program, the energy management method according to claim 9 is implemented.

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