CN117136905A

CN117136905A - A low-carbon environmental control system cluster for staged aquaculture based on renewable energy

Info

Publication number: CN117136905A
Application number: CN202311270270.XA
Authority: CN
Inventors: 徐田雅慧; 曹祥; 张春路
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2023-12-01

Abstract

The invention relates to a renewable energy source-based aquatic product staged cultivation low-carbon control system cluster, wherein the aquatic product staged cultivation low-carbon control system comprises a refrigerant circulation system, a solar energy access system and an oxygenation system; the refrigerant circulation system comprises a refrigerant circulation loop, an air circulation loop, a first secondary refrigerant heating circulation loop and a secondary refrigerant refrigeration circulation loop; the air circulation loop is connected with the refrigerant circulation loop in a heat exchange mode; the first secondary refrigerant heating circulation loop exchanges heat with a heating pond; the refrigerating cycle loop of the secondary refrigerant exchanges heat with the water pool for refrigeration. Compared with the prior art, the invention greatly improves the energy efficiency and the economy of the annual temperature control and oxygenation technology of aquaculture by efficiently combining the energy quality high-quality improvement characteristic, the solar photovoltaic photo-thermal characteristic, the energy storage and access characteristic of the energy storage tank and the aquaculture periodic culture characteristic of the heat pump, thereby meeting the requirements of safety, reliability, energy conservation and environmental protection.

Description

Low-carbon control system cluster for aquatic product staged culture based on renewable energy sources

Technical Field

The invention relates to the technical field of heat pump technology and renewable energy source utilization, in particular to a low-carbon control system cluster for aquaculture stage by stage based on renewable energy sources.

Background

Since the beginning of the 21 st century, the consumer model of common people has been continuously changed and the level of fishery technology has been significantly improved, and aquaculture has become a widely developed industrial form throughout the country, particularly in coastal areas. Aquaculture, a production activity by which aquatic animals and plants are propagated, cultivated and harvested under artificial control, generally involves the whole process of growing the aquatic products from offspring seeds under artificial feeding management. However, aquatic products generally belong to temperature-changing animals, and can normally grow and reproduce only in a proper temperature and oxygen content range, otherwise, growth stop and even death can occur. Therefore, the temperature control and oxygenation technology is critical to the development of the aquaculture industry.

Regarding the temperature control technology, the traditional refrigeration/heating mode adopts a coal-fired boiler, a gas-fired boiler and the like with high pollutant emission. The air source heat pump has the advantages of ideal heating and refrigerating effects, moderate initial investment, intelligent control and the like due to the energy-saving, environment-friendly and safety characteristics, and receives great attention from the government. However, the heat pump alone is used for controlling the temperature, so that the problems of high power consumption, high running cost and the like still exist. The solar energy is used as inexhaustible renewable clean energy, and has wide application fields such as power generation, heating, energy storage and the like. Therefore, the organic combination of photovoltaic photo-thermal technology, heat pump technology and energy storage technology has become one of the most promising temperature control modes at present.

In terms of oxygenation technology, large-scale air blasting devices are commonly adopted for oxygen supply in traditional aquaculture, and the oxygen supply is carried out in a long-distance concentrated mode by connecting air pipes and extending the air pipes into the bottoms of different ponds. However, the fan is required to have a higher pressure head by adopting the mode, and a large amount of energy is lost in the pipeline conveying process, so that the practical requirements in aquaculture are difficult to meet.

Patent CN 11086211A discloses an aquaculture is with heat supply oxygenation integral type heat pump set, through substituting traditional boiler energy supply with the air source heat pump, is equipped with many small-size air-blowers in heat pump set inside simultaneously and carries out oxygenation, has solved the problem that energy utilization efficiency is low to a certain extent. However, as the number of ponds increases, the number of blowers increases with an increase in electrical energy demand. If the power grid is used as the only electric energy source, the system operation cost and the carbon dioxide and pollutant emission caused by the electric energy supply can be greatly improved.

Patent CN 104351119A discloses a heat and oxygen supply mechanism for aquaculture, which is characterized in that a pipeline with micropores is arranged in a culture pond and then is communicated with an air compressor and a solar water heater outside the pond. The aquaculture heat and oxygen supply mechanism adopts a mode of directly supplying heat and oxygen in aquaculture water, and solves the problem of heat and oxygen supply of aquaculture to a certain extent. However, the solar water heater is actually simply combined with the oxygenerator, the integration level is low, and meanwhile, the solar water heater has the regional limitation and the time period limitation, so that the functions of temperature control and oxygen supply real-time regulation in aquaculture are difficult to realize.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a low-carbon control system cluster for aquiculture in stages based on renewable energy sources, and the energy efficiency and the economy of the annual temperature control and oxygenation technology of aquiculture are greatly improved while the safety, reliability, energy conservation and environmental protection are met by efficiently combining the high-quality improvement characteristic of the energy source grade of a heat pump, the solar photovoltaic photo-thermal characteristic, the energy storage access characteristic of an energy storage tank and the aquiculture periodic culture characteristic.

The aim of the invention can be achieved by the following technical scheme:

the invention provides a low-carbon control system cluster for aquiculture in stages based on renewable energy sources, which is used for realizing the low-carbon temperature control and oxygenation process in aquiculture in stages. As most of fishes and shrimps are temperature-variable animals, the growth and propagation environment needs to be kept stable, and the invention can determine the refrigeration/heating requirements of the cultivation in each period of the whole year according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties. The annual time zone is divided into a plurality of heating pond service periods (namely, the heating demand is far greater than the cooling demand) and the cooling pond service period (namely, the cooling demand is far greater than the heating demand) according to the cooling and heating demand ratio, and finally, the annual pond internal temperature, oxygen content and other parameters are ensured to fluctuate less along with the environmental change.

The invention provides a low-carbon control system cluster for aquatic product staged culture based on renewable energy sources, which is used for the low-carbon temperature control and oxygenation process in the aquatic product staged culture, wherein the low-carbon control system cluster for the aquatic product staged culture comprises a refrigerant circulation system, a solar energy access system and an oxygenation system;

the refrigerant circulation system comprises a refrigerant circulation loop, an air circulation loop, a first secondary refrigerant heating circulation loop and a secondary refrigerant refrigeration circulation loop;

the air circulation loop is connected with the refrigerant circulation loop in a heat exchange mode;

the refrigerant circulation loop is respectively connected with the first secondary refrigerant heating circulation loop and the secondary refrigerant refrigeration circulation loop in a heat exchange mode;

the first secondary refrigerant heating circulation loop exchanges heat with a heating pond;

the refrigerating cycle loop of the secondary refrigerant exchanges heat with the water pond for refrigeration;

the solar access system is used for photovoltaic power generation, stores heat generated in the photovoltaic power generation process and can supplement heat for a heating pond;

the oxygenation system is used for oxygenation of the heating pond and the cooling pond.

Further, the refrigerant circulation loop comprises a first heat exchange channel of a water source heat exchanger, an electronic expansion valve, a refrigerant channel of an air source heat exchanger, a four-way reversing valve and a compressor which are connected in sequence;

The air inlet end and the air outlet end of the compressor are respectively communicated with two interfaces of the four-way reversing valve, and the other two interfaces of the four-way reversing valve are respectively communicated with one end of a water source heat exchanger refrigerant heat exchange channel and one end of an air source heat exchanger refrigerant heat exchange channel;

the air source heat exchanger is connected with the air source heat exchanger through a four-way reversing valve, and the air source heat exchanger is connected with the air source heat exchanger through a water source heat exchanger;

the interface of the four-way reversing valve connected with the exhaust end of the compressor is communicated with the interface of the air source heat exchanger connected with the refrigerant channel in the refrigeration mode, and the interface of the four-way reversing valve connected with the air suction end of the compressor is communicated with the interface of the four-way reversing valve connected with the first heat exchange channel of the water source heat exchanger to form a refrigerant flowing closed loop.

Further, the air circulation loop comprises an air source heat exchanger outer wall and an axial flow fan, and the ambient air and the air source heat exchanger outer wall are directly conveyed by the axial flow fan to return to the environment after heat exchange, so that the circulation loop is formed;

The first secondary refrigerant heating circulation loop comprises a second heat exchange channel of the water source heat exchanger, a buffer water tank, a first heating stop valve, a first heat exchange water pipe, a second heating stop valve and a first water pump which are sequentially connected, and an outlet of the first water pump is connected with an inlet of the second heat exchange channel of the water source heat exchanger to form a secondary refrigerant flowing closed loop;

the first heat exchange water pipe penetrates into the bottom of the heating pond to perform full heat exchange;

the secondary refrigerant refrigeration cycle loop comprises a second heat exchange channel of a water source heat exchanger, a first water pump, a first refrigeration stop valve, a third heat exchange water pipe, a second refrigeration stop valve and a buffer water tank which are connected in sequence;

the outlet of the buffer water tank is connected with the inlet of the second channel of the water source heat exchanger to form a secondary refrigerant flowing closed loop;

the third heat exchange water pipe penetrates into the bottom of the pool for refrigeration to perform full heat exchange.

Further, the solar access system comprises a heat collector heat storage subsystem and a photovoltaic power generation subsystem;

the photovoltaic power generation subsystem comprises a photovoltaic module, an inversion control integrated machine, a photovoltaic meter and power storage equipment which are sequentially connected by using wires;

the photovoltaic module is mainly built by a semiconductor, under a normal state, a semiconductor atomic nucleus is tightly combined with electrons (in a non-conductor state), but after illumination, the bonding force between the atomic nucleus and the electrons is reduced, the atomic nucleus loses the constraint on the electrons, and the electrons are changed into free electrons, so that photoelectric conversion is realized;

The inversion control integrated machine can complete power conversion of converting direct current from the photovoltaic module into alternating current meeting the equipment requirement, and simultaneously complete inversion regulation and control of the power generation process of the photovoltaic module;

the photovoltaic meter and the electricity storage equipment are used in a combined mode, the storage amount of electric energy can be measured, and output and control of electric quantity required by a user are achieved.

Further, the heat collector heat storage subsystem comprises a heat collecting medium circulation loop, a second secondary refrigerant heating loop and a supplementing water heating loop;

the heat collecting medium circulation loop comprises a heat collector, a solution pump, a first heat collecting stop valve, a coil heat exchanger and a second heat collecting stop valve which are sequentially connected by using a heat collecting medium pipeline, and an outlet of the second heat collecting stop valve is connected with an inlet of the heat collector to form a heat collecting medium flowing closed loop;

the second secondary refrigerant heating loop comprises a second water pump, a third heat collection stop valve, a heat storage water tank, a fourth heat collection stop valve and a second heat exchange water pipe which are sequentially connected, an outlet of the second heat exchange water pipe is connected with an inlet of the second water pump to form a secondary refrigerant flowing closed loop, and the second heat exchange water pipe penetrates into the bottom of the heating pond to perform full heat exchange;

The supplementing water heating loop comprises a third water pump, a supplementing water inlet stop valve, a heat storage water tank and a supplementing water outlet stop valve which are connected in sequence;

the heat collecting medium circulation loop is connected with the second secondary refrigerant heating loop through heat exchange of the heat storage water tank, and the high-temperature heat collecting medium flows out from the outlet of the heat collector and enters the coil heat exchanger in the heat storage water tank to exchange heat with the low-temperature secondary refrigerant water flowing from the second water pump, so that heating of the pond for heating is realized;

the heat collecting medium circulation loop is connected with the supplementing water heating loop through the heat exchange of the heat storage water tank, and the high-temperature heat collecting medium flows out from the outlet of the heat collector and enters the coil heat exchanger in the heat storage water tank to exchange heat with the low-temperature supplementing water flowing from the third water pump, so that heating of other occasions of the supplementing water is realized.

Further, the oxygenation system comprises a blower, a first oxygenation stop valve/a second oxygenation stop valve and an air pipe which are connected in sequence, wherein the air pipe penetrates into the bottom of the low-temperature pond/the bottom of the refrigeration pond to perform full oxygenation.

Further, the aquatic product staged cultivation low-carbon environmental control system cluster also comprises a monitoring control system, wherein the monitoring control system comprises a control box, a first water temperature monitoring probe, a second water temperature monitoring probe, a first water quality monitoring probe and a second water quality monitoring probe;

One end of the water temperature monitoring probe and one end of the water quality monitoring probe are placed in the pond, and the other end of the water temperature monitoring probe is connected with the control box;

the control box is also electrically connected with the compressor, the axial flow fan, the blower, the first water pump, the second water pump, the third water pump, the solution pump and the inversion control integrated machine, and the control box receives data of the water temperature monitoring probe and the water quality monitoring probe so as to control the opening and closing actions of the compressor, the axial flow fan, the blower, the first water pump, the second water pump, the third water pump, the solution pump and the inversion control integrated machine;

the control box is internally provided with a controller, and the controller is one of a singlechip or an x86 architecture, an ARM architecture and a RISC-V architecture processor.

Further, if more than 1 water ponds for heating or cooling are needed to be arranged, each water pond only needs to be paved with a corresponding heat exchange water pipe, a corresponding air pipe, a corresponding water temperature monitoring probe and a corresponding water quality monitoring probe;

if one heating pond is added, two heat exchange water pipes are respectively led into the pond bottom from the first heating stop valve outlet and the fourth heat collection stop valve outlet by using a water separator so as to heat; if one water pool for refrigeration is added, a heat exchange water pipe is required to be led into the water pool from the outlet of the first refrigeration stop valve by using a water separator so as to go deep into the bottom of the water pool for refrigeration; the air pipes only need to meet the requirement that each pond is paved at the bottom of the pond from the outlet of the air blower through the stop valve; the monitoring probes only need to meet the requirement that one water temperature monitoring probe and one water quality monitoring probe are connected from the control box in each pond.

Further, plastic greenhouses are arranged on the ponds to improve the stability of parameters such as temperature in the ponds; the heating pond is characterized in that a telescopic straw mat is arranged on the greenhouse so as to weaken the diffusion of heat in the pond to the external environment in a low-temperature environment; the solar PVT plate with the adjustable angle is arranged on the greenhouse through the automatic installation angle adjusting frame, and the working angle of the PVT plate is continuously changed along with the irradiation angle of sunlight so as to ensure that the pond is in a shadow area which is not directly irradiated by the sunlight; the device can be used for reducing the water body temperature rise caused by direct solar irradiation pond under high temperature environment, and can also finish the high-efficiency utilization of solar energy based on photovoltaic photo-thermal characteristics on the premise of reducing the occupied area of PVT board;

the solar PVT plate consists of a photovoltaic module and a heat collector, wherein the heat collector is arranged at the back of the photovoltaic module to recover heat energy generated by the photovoltaic module in the photoelectric conversion process, so that the surface temperature is reduced to improve the photoelectric conversion efficiency of the photovoltaic module;

the invention can realize the staged cultivation of the aquatic products through the control box and the four-way reversing valve; as most of fishes and shrimps are temperature-variable animals and the growth and propagation environment is required to be kept stable, the invention can customize and determine the service conditions of the annual heating pond and the refrigerating pond according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties, and divide the annual time zone into a plurality of service periods of the heating pond and the service period of the refrigerating pond, thereby finally ensuring that the temperature, oxygen content and other parameters in the annual pond have smaller fluctuation along with the environmental change.

Further, because oxygenation requirements exist in the aquiculture pond all the year round, the oxygenation system maintains a working state all the year round, when oxygen content data obtained through monitoring by the water quality monitoring probe is lower than a standard value, a control box starts a blower power supply, and air is conveyed to the bottom of the pond through an air pipe to perform oxygenation until the oxygen content reaches a set value and is stopped;

furthermore, except for overcast and rainy weather, the aquaculture places are provided with solar energy, so that the solar energy access system keeps working state all the year except for overcast and rainy weather;

in the photovoltaic power generation subsystem, the photovoltaic module completes conversion of solar energy and electric energy based on a semiconductor photoelectric effect, and direct current obtained after conversion firstly flows through an inversion control integrated machine to be converted into alternating current required by electrical equipment, and a photovoltaic meter meters electric quantity generated by the photovoltaic module and stores the electric quantity into electric storage equipment; the generating capacity of the photovoltaic module is preferentially applied to electrical equipment in the system, and when the generating capacity of the photovoltaic module is larger than the total power consumption of the equipment, the electric quantity required by the electrical equipment is provided by the photovoltaic module, and the residual electric quantity is on the internet; when the generated energy of the photovoltaic module is smaller than the total power consumption of the electrical equipment, the generated energy of the photovoltaic module is fully applied to the electrical equipment of the system, and the insufficient part is supplied by the power grid.

Further, in the heat storage subsystem of the heat collector, the heat collector is arranged on the back of a photovoltaic panel of the photovoltaic module so as to recycle heat generated in the photovoltaic power generation process;

after the heat collection medium in the heat collector is heated by absorbing heat, the heat collection medium is pumped through the first heat collection stop valve by the solution pump and enters the coil heat exchanger in the heat storage water tank, exchanges heat with low-temperature secondary refrigerant water in the heat storage water tank to store heat energy in the water tank, and then the cooled heat collection medium returns to the heat collector through the second heat collection stop valve to complete heat collection medium circulation.

Further, when the heating pond is in the service period, the third heat collection stop valve and the fourth heat collection stop valve are opened, the heated secondary refrigerant water in the heat storage water tank is pumped by the second water pump to pass through the fourth heat collection stop valve and then flows into the second heat exchange water pipe in the heating pond, the water in the pond is heated to maintain the comfort of the water temperature in the pond under the low-temperature environment, and the cooled secondary refrigerant water is pumped by the second water pump to flow through the third heat collection stop valve and is sent back to the heat storage water tank, so that the second secondary refrigerant heating cycle is completed;

When the refrigerating pond is in the service life, the refrigerating pond has no heating requirement, so heat generated by solar energy is conveyed to other occasions needing heating near the aquaculture ground, the supplementing water inlet stop valve and the supplementing water outlet stop valve are opened, the heated secondary refrigerant water in the heat storage water tank flows out of the supplementing water outlet stop valve through the pumping of the third water pump to heat other occasions, and low-temperature supplementing water is pumped by the third water pump to flow into the heat storage water tank through the supplementing water inlet stop valve to be heated, so that the supplementing water heating cycle is completed.

Further, when the four-way reversing valve is in the service life of the heating pond, the four-way reversing valve is required to be switched into a heating mode, and a refrigerant circulation loop, an air circulation loop and a first secondary refrigerant heating circulation loop in the refrigerant circulation system work normally;

opening the first heating stop valve and the second heating stop valve, and enabling high-temperature and high-pressure refrigerant gas discharged from the compressor to flow through a first heat exchange channel of the water source heat exchanger and be cooled by low-temperature secondary refrigerant water pumped to a second heat exchange channel of the water source heat exchanger by a first water pump; then, the low-temperature high-pressure refrigerant flows into the electronic expansion valve to be throttled and depressurized, and then enters the air source heat exchanger to exchange heat with the ambient air conveyed by the axial flow fan; finally, low-temperature low-pressure refrigerant gas flowing out of the air source heat exchanger enters the compressor through the four-way reversing valve, and the compressed high-temperature high-pressure refrigerant gas flows into the first heat exchange channel of the water source heat exchanger again to complete refrigerant circulation and air circulation;

The secondary refrigerant water heated in the second heat exchange channel of the water source heat exchanger sequentially passes through the buffer water tank and the first heating stop valve, flows into the first heat exchange water pipe in the heating pond, and heats water in the pond to maintain the comfort of water temperature in the pond in a low-temperature environment; and then, the cooled secondary refrigerant water flows through a second heating stop valve, and is pumped back to a second heat exchange channel of the water source heat exchanger by a first water pump, so that the first secondary refrigerant heating cycle is completed.

When the water tank is in the service life of the refrigeration water tank, the four-way reversing valve is required to be switched into a refrigeration mode, and a refrigerant circulation loop, an air circulation loop and a secondary refrigerant refrigeration circulation loop in the refrigerant circulation system work normally.

Opening the first refrigeration stop valve and the second refrigeration stop valve, and enabling high-temperature and high-pressure refrigerant gas discharged from the compressor to enter an air source heat exchanger refrigerant channel to exchange heat with ambient air conveyed by the axial flow fan; then, the cooled low-temperature high-pressure refrigerant flows into an electronic expansion valve to be throttled and depressurized, then enters a first heat exchange channel of a water source heat exchanger, and absorbs heat in the secondary refrigerant water pumped into a second heat exchange channel of the water source heat exchanger by a first water pump; finally, low-temperature low-pressure refrigerant gas flowing out of the first heat exchange channel of the water source heat exchanger enters the compressor through the four-way reversing valve, and the compressed high-temperature high-pressure refrigerant gas flows into the refrigerant channel of the air source heat exchanger again to complete refrigerant circulation and air circulation;

The secondary refrigerant water cooled in the second heat exchange channel of the water source heat exchanger is pumped to the first refrigeration stop valve by the first water pump, flows into the third heat exchange water pipe in the refrigeration pond, and cools the water in the pond to maintain the comfort of the water temperature in the pond in a high-temperature environment; then, the secondary refrigerant water after absorbing heat sequentially enters a second refrigeration stop valve and a buffer water tank, and finally is pumped back to a second heat exchange channel of the water source heat exchanger by a first water pump, so that the secondary refrigerant refrigeration cycle is completed;

furthermore, the monitoring and controlling system needs to maintain the working state all the year round because the monitoring and controlling of parameters in the pond are needed in the whole aquaculture process; in terms of water temperature monitoring and controlling, when the water temperature monitoring probe detects that the water temperature is lower than a set value in the service period of the heating pool, the control box starts the compressor, the first water pump and the second water pump to heat the pool until the temperature rises to the set value, and then the control box is closed; when the water tank is in the service period of the refrigeration water tank, if the second water temperature monitoring probe detects that the water temperature is higher than the set value, the control box starts the compressor and the first water pump to perform water tank refrigeration, and the control box can be closed after the temperature is reduced to the set value; for water quality monitoring regulation and control, when the water quality monitoring probe detects that the oxygen content in water is low, the control box starts the air blower, air enters the bottom of the pond through the air blower through the air pipe to carry out oxygenation, and the air blower can be turned off until the oxygen content reaches a set value.

According to the invention, the renewable energy-based low-carbon control system cluster for the aquaculture stage by stage is adopted, an air source heat pump is adopted to replace the traditional boiler/gas combustion energy supply, the photovoltaic photo-thermal effect of renewable clean energy solar energy is ingeniously utilized, the advantages of the renewable clean energy and the renewable energy are combined with each other with high efficiency, so that the self-sufficiency of energy in the aquaculture process is realized, and the emission of carbon dioxide and pollutants is greatly reduced.

Compared with the prior art, the invention has the following technical advantages:

1. the system accurately divides the use period of the pond for annual heating and the use period of the pond for refrigeration according to the refrigeration demand and the heating demand ratio in different periods of the year based on the climate characteristics of the first 10 years of the place where the aquaculture is located and the growth characteristics of different aquaculture varieties, so that the staged high-quality aquaculture of the aquaculture is realized;

2. the system is custom designed according to the pool configuration in different use periods, and a telescopic straw mat is laid on a plastic greenhouse of the heating pool, so that the heat preservation performance of the pool at night under low-temperature weather is enhanced, the heat diffusion condition in the pool is weakened, the heating load of the system is reduced, and the running cost of the system is reduced;

3. the solar PVT plate with adjustable angles is arranged on the plastic greenhouse of the pond for refrigeration, and the solar PVT plate has the capabilities of sun shading, rain prevention, hail prevention, wind prevention and the like when generating electricity and supplying heat, so that the heat of the pond in the daytime caused by direct sunlight can be reduced, the refrigeration load of the system can be reduced, the running cost of the system can be reduced, and meanwhile, the running stability of the system can be enhanced; in addition, the PVT plate is directly arranged on the greenhouse, so that the occupied paving area of the PVT plate is directly saved, and the system installation cost is greatly reduced;

4. The system adopts an air source heat pump unit to replace the traditional boiler/gas combustion. The combustion of the traditional fossil fuel tends to cause a great deal of pollutant and carbon dioxide emission, and seriously endanger the global climate environment; the air source heat pump unit mainly sources outside air, has the characteristics of energy conservation, environmental protection, low carbon, high efficiency and refrigeration effect, and can realize annual temperature regulation and control of aquaculture;

5. the system skillfully utilizes the inexhaustible excellent characteristics of the renewable clean energy solar photovoltaic photo-thermal effect and the inexhaustible characteristics, and is combined with an air source heat pump unit with high efficiency; the electric energy generated by the solar PVT board is stored in the electricity storage equipment to supply power to or grid-connected with the electrical equipment in the system in real time; the heat energy generated by the solar PVT plate is stored in the heat storage water tank through the heat collecting medium, so that the heat energy can be supplied to other heating occasions nearby the cultivation land while the heat energy is supplied to the heating pond; therefore, the system can not only realize the self-sufficiency of most of heat energy and electric energy in the aquaculture process, but also provide heat for other heating occasions, greatly reduce carbon dioxide emission while saving the running cost of the system, and assist the local government to regulate and control the environment;

6. The system is provided with the small-sized blower for oxygenation in the heat pump unit, so that the pressure loss generated by centralized oxygen supply and long-distance transportation of the traditional large-sized blower is greatly weakened, and the system operation performance is remarkably improved; meanwhile, the heat pump unit and the blower are electromechanical equipment capable of being automatically operated, and can be integrated in one shell through integrated design and share one set of control system, so that the system installation cost and the manual control cost are greatly reduced.

Drawings

FIG. 1 is a schematic flow chart of a low-carbon control system for staged aquaculture based on renewable energy sources in example 1;

FIG. 2 is a schematic flow chart of a low-carbon control system for staged multi-pond aquaculture based on renewable energy sources in example 2;

FIG. 3 is a schematic flow chart of an angle-controllable solar energy access system for aquaculture in embodiment 3.

3-1, 3-2 and 3-3 respectively show the working angles of the solar PVT board under different periods of the whole day (such as morning, noon and afternoon for example) of the system operation.

In FIG. 1, 1 is a water source heat exchanger, 2 is an electronic expansion valve, 3 is an air source heat exchanger, 4 is an axial flow fan, 5 is a four-way reversing valve, 6 is a compressor, 7 is a buffer water tank, 8 is a first water pump, 9 is a second water pump, 10 is a third water pump, 11 is a solution pump, 12 is a blower, 13 is a control box, 14 is a straw mat, 15, 16 is a plastic greenhouse, 17 is a heating pond, 18 is a cooling pond, 19 is a first heat exchange water pipe, 20 is a second heat exchange water pipe, 21 is a third heat exchange water pipe, 22 is a first water temperature monitoring probe, 23 is a first water quality monitoring probe, 24 is a second water temperature monitoring probe, 25 is a second water quality monitoring probe, 26 is a heat storage water tank, 27 is a coil heat exchanger, 28 is an inversion control integrated machine, 29 is a photovoltaic meter, 30 is an electric storage device, 31 is a power grid, 32 is a photovoltaic module, 33 is a heat collector, 34 is an automatic angle adjusting frame, 35 is a first heating stop valve, 36 is a second heating stop valve, 37 is a first refrigerating stop valve, 38 is a second refrigerating stop valve, 39 is a first heat collecting stop valve, 40 is a second heat collecting stop valve, 41 is a third heat collecting stop valve, 42 is a fourth heat collecting stop valve, 43 is a supplementing water inlet stop valve, 44 is a supplementing water outlet stop valve, 45 is a first oxygenation stop valve, 46 is a second oxygenation stop valve, 47, 48, 49, 50, 51, 52 are copper pipes, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65 are PVC water pipes, 66, 67, 68 are heat collecting medium pipes, 69, 70, 71 are electric wires, and 72 are sunlight.

In FIG. 2, 1 is a water source heat exchanger, 2 is an electronic expansion valve, 3 is an air source heat exchanger, 4 is an axial flow fan, 5 is a four-way reversing valve, 6 is a compressor, 7 is a buffer water tank, 8 is a first water pump, 9 is a second water pump, 10 is a third water pump, 11 is a solution pump, 12 is a blower, 13 is a control box, 14, 15 are straw mats, 16, 17, 18, 19 are a plastic greenhouse, 20 is a first heating pond, 21 is a second heating pond, 22 is a first cooling pond, 23 is a second cooling pond, 24 is a first heat exchange water pipe, 25 is a fourth heat exchange water pipe, 26 is a second heat exchange water pipe, 27 is a fifth heat exchange water pipe, 28 is a third heat exchange water pipe, 29 is a sixth heat exchange water pipe, 30 is a first water temperature monitoring probe, 31 is a third water temperature monitoring probe, 32 is a second water temperature monitoring probe, 33 is a fourth water temperature monitoring probe, 34 is a first monitoring probe, 35 is a third water quality monitoring probe, 36 is a second water quality monitoring probe, 37 is a fourth water quality monitoring probe, 38 is a heat storage tank, 39 is a coil heat exchanger, 40 is an inversion control integrated machine, 41 is a photovoltaic meter, 42 is a power storage device, 43 is a power grid, 44 is a first photovoltaic module, 45 is a second photovoltaic module, 46 is a first heat collector, 47 is a second heat collector, 48, 49 is an angle automatic adjusting frame, 50 is a first heating stop valve, 51 is a second heating stop valve, 52 is a third heating stop valve, 53 is a fourth heating stop valve, 54 is a first cooling stop valve, 55 is a second cooling stop valve, 56 is a third cooling stop valve, 57 is a fourth cooling stop valve, 58 is a first power generation stop valve, 59 is a second power generation stop valve, 60 is a first heat collection stop valve, 61 is a second heat collection stop valve, 62 is a third heat collection stop valve, 63 is a fourth heat collecting stop valve, 64 is a fifth heat collecting stop valve, 65 is a sixth heat collecting stop valve, 66 is a seventh heat collecting stop valve, 67 is an eighth heat collecting stop valve, 68 is a ninth heat collecting stop valve, 69 is a tenth heat collecting stop valve, 70 is a supplementing water inlet stop valve, 71 is a supplementing water outlet stop valve, 72 is a first oxygenation stop valve, 73 is a third oxygenation stop valve, 74 is a second oxygenation stop valve, 75 is a fourth oxygenation stop valve, 76, 77, 78, 79, 80, 81 are copper pipes, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94 are PVC water pipes, 95, 96, 97 are heat collecting medium pipes, 98, 99, 100, 101, 102 are air pipes, 103, 104, 105 are electric wires.

In fig. 3, 1 is a photovoltaic module, 2 is a heat collector, 3 is an angle automatic adjusting frame, 4 is a plastic greenhouse, 5 is a pond, 6 is an inversion control integrated machine, 7 is a photovoltaic meter, 8 is electric storage equipment, 9 is a power grid, 10 is a heat storage water tank, 11 is a coil heat exchanger, 12 is a solution pump, 13 is a water pump, 14 is a first heat collection stop valve, 15 is a second heat collection stop valve, 16 is a heating water inlet stop valve, 17 is a heating water outlet stop valve, 18, 19 and 20 are electric wires, 21 and 22 are heat collection medium pipelines, and 23 and 24 are PVC water pipes.

Detailed Description

In the technical scheme, the characteristics such as the names of structures/modules, control modes, algorithms, process procedures or composition ratios and the like which are not explicitly described are regarded as common technical characteristics disclosed in the prior art.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

The embodiment provides a renewable energy source-based low-carbon control system cluster (see fig. 1) for aquaculture staged cultivation, which is used for realizing temperature control and oxygenation processes in aquaculture staged cultivation. As most of fishes and shrimps are temperature-variable animals, the growth and propagation environment needs to be kept stable, and the embodiment can determine the refrigeration/heating requirements of the cultivation in each period of the whole year according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties. The annual time zone is divided into a plurality of heating pond service periods (namely, the heating demand is far greater than the cooling demand) and the cooling pond service period (namely, the cooling demand is far greater than the heating demand) according to the cooling and heating demand ratio, and finally, the annual pond internal temperature, oxygen content and other parameters are ensured to fluctuate less along with the environmental change. The whole system comprises a refrigerant circulation system, a solar energy access system, an oxygenation system, a pipeline connected with equipment in the unit and a monitoring control system thereof;

the refrigerant circulation loop comprises a first heat exchange channel 1A of a water source heat exchanger 1, an electronic expansion valve 2, an air source heat exchanger 3, an axial flow fan 4, a four-way reversing valve 5 and a compressor 6 which are sequentially connected by copper pipes 47, 48, 49, 50, 51 and 52; the air inlet end and the air outlet end of the compressor 6 are respectively communicated with two interfaces 5B and 5D of the four-way reversing valve 5, and the other two interfaces 5A and 5C are respectively communicated with one end of a refrigerant heat exchange channel of the air source heat exchanger 3 and one end of a first heat exchange channel 1A of the water source heat exchanger 1;

The operation state of the compressor 6 is related to a heat pump operation mode through the actual communication mode of the four-way reversing valve 5 with the water source heat exchanger 1 and the air source heat exchanger 3, and in a heating mode, an interface 5D connected with the exhaust end of the compressor 6 in the four-way reversing valve 5 is communicated with an interface 5C connected with the first heat exchange channel 1A of the water source heat exchanger 1, and an interface 5B connected with the air suction end of the compressor 6 in the four-way reversing valve 5 is communicated with an interface 5A connected with the air source heat exchanger 3; the interface 5D connected with the exhaust end of the compressor 6 in the four-way reversing valve 5 and the interface 5A connected with the refrigerant channel of the air source heat exchanger 3 are communicated with each other in the refrigeration mode, the interface 5B connected with the air suction end of the compressor 6 in the four-way reversing valve 5 and the interface 5C connected with the first heat exchange channel 1A of the water source heat exchanger 1 are communicated with each other, and finally a refrigerant flowing closed loop is formed through the connection;

the air circulation loop comprises an air source heat exchanger 3 and an axial flow fan 4, and the ambient air is directly conveyed by the axial flow fan 4 to return to the environment after heat exchange is carried out on the ambient air and the air source heat exchanger 3;

the first secondary refrigerant heating circulation loop comprises a second heat exchange channel 1B of the water source heat exchanger 1, a buffer water tank 7, a first heating stop valve 35, a first heat exchange water pipe 19, a second heating stop valve 36 and a first water pump 8 which are sequentially connected by using PVC pipes 53, 54, 55, 56, 57 and 58; the outlet of the first water pump 8 is connected with the inlet of the second heat exchange channel 1B of the water source heat exchanger 1 to form a secondary refrigerant flowing closed loop; the first heat exchange water pipe 19 needs to go deep into the bottom of the heating pond 17 to perform sufficient heat exchange;

The secondary refrigerant refrigeration cycle loop comprises a second heat exchange channel 1B of a water source heat exchanger 1, a first water pump 8, a first refrigeration stop valve 37, a third heat exchange water pipe 21, a second refrigeration stop valve 38 and a buffer water tank 7 which are sequentially connected by using PVC pipes 58, 57, 59, 60 and 54; the outlet of the buffer water tank 7 is connected with the inlet of the second channel 1B of the water source heat exchanger 1 to form a secondary refrigerant flowing closed loop; the third heat exchange water pipe 21 needs to go deep into the bottom of the refrigeration pond 18 to perform sufficient heat exchange;

the solar access system comprises a photovoltaic power generation subsystem and a heat collector heat storage subsystem;

the photovoltaic power generation subsystem comprises a photovoltaic module 32, an inversion control integrated machine 28, a photovoltaic meter 29 and a power storage device 30 which are sequentially connected by using wires 69, 70 and 71;

the photovoltaic module 32 is mainly built by semiconductors, and under the normal state, semiconductor atomic nuclei and electrons are tightly combined (in a non-conductor state), but after illumination, the bonding force between the atomic nuclei and the electrons is reduced, the atomic nuclei lose the constraint on the electrons, and the electrons are changed into free electrons, so that photoelectric conversion is realized;

the inverter control integrated machine 28 can complete the power conversion of converting the direct current from the photovoltaic module 32 into alternating current meeting the equipment requirements, and can simultaneously complete the control of the whole photovoltaic module power generation process;

The combined use of the photovoltaic meter 29 and the electricity storage device 30 can accurately measure the storage amount of the electric energy, so that the accurate output and control of the electric quantity required by a user are realized;

the heat collector heat storage subsystem comprises a heat collecting medium circulation loop, a second secondary refrigerant heating loop and a supplementing water heating loop;

the heat collecting medium circulation loop comprises a heat collector 33, a solution pump 11, a first heat collecting stop valve 39, a coil heat exchanger 27 and a second heat collecting stop valve 40 which are sequentially connected by using heat collecting medium pipelines 66, 67 and 68; the outlet of the second heat collection stop valve 40 is connected with the inlet of the heat collector 33 to form a heat collection medium flow closed loop;

the second secondary refrigerant heating circuit comprises a second water pump 9, a third heat collection stop valve 41, a heat storage water tank 26, a fourth heat collection stop valve 42 and a second heat exchange water pipe 20 which are sequentially connected by PVC pipes 61, 62 and 63; the outlet of the second heat exchange water pipe 20 is connected with the inlet of the second water pump 9 to form a secondary refrigerant flowing closed loop; the second heat exchange water pipe 20 needs to go deep into the bottom of the heating pond 17 to perform sufficient heat exchange;

the make-up water heating circuit includes a third water pump 10, a make-up water inlet shut-off valve 43, a storage tank 26 and a make-up water outlet shut-off valve 40 connected in sequence using PVC pipes 64, 65;

The heat collecting medium circulation loop is in heat exchange connection with the second secondary refrigerant heating loop through the heat storage water tank 26, and the high-temperature heat collecting medium flows out from the outlet of the heat collector 33 and enters the coil heat exchanger 27 in the heat storage water tank 26 to exchange heat with the low-temperature secondary refrigerant water flowing from the second water pump 9, so that heating of the heating pond 17 is realized;

the heat collecting medium circulation loop is in heat exchange connection with the supplementing water heating loop through the heat storage water tank 26, and the high-temperature heat collecting medium flows out from the outlet of the heat collector 33 and enters the coil heat exchanger 27 in the heat storage water tank 26 to exchange heat with the low-temperature supplementing water flowing from the third water pump 10, so that heating of other occasions of the supplementing water is realized;

the oxygenation system is configured independently of the system and is formed by sequentially connecting a blower 12, a first oxygenation stop valve 45/a second oxygenation stop valve 46 and air pipes 61, 62 and 63; the air pipes 62 and 63 need to go deep into the bottom of the heating pond 17/the cooling pond 18 to fully increase oxygen;

the monitoring control system comprises a control box 13, a first water temperature monitoring probe 22, a second water temperature monitoring probe 24, a first water quality monitoring probe 23 and a second water quality monitoring probe 25; one end of the water temperature monitoring probes 22 and 24 and one end of the water quality monitoring probes 23 and 25 are placed in the pond, and the other end of the water temperature monitoring probes is connected with the control box; the control box 13 is also electrically connected with the compressor 6, the axial flow fan 4, the blower 12, the first water pump 8, the second water pump 9, the third water pump 10, the solution pump 11 and the inversion control integrated machine 28, and the control box 13 receives data of the water temperature monitoring probes 22 and 24 and the water quality monitoring probes 23 and 25 so as to control the opening and closing actions of the compressor 6, the axial flow fan 4, the blower 12, the first water pump 8, the second water pump 9, the third water pump 10, the solution pump 11 and the inversion control integrated machine 28; the control box 13 is provided with a controller which is one of a single chip microcomputer or an x86 architecture, an ARM architecture and a RISC-V architecture processor;

If more than 1 heating pond 17 or cooling pond 18 is needed, only corresponding heat exchange water pipes 19, 20 and 21, air pipes 62 and 63, water temperature monitoring probes 22 and 24 and water quality monitoring probes 23 and 25 are paved in each pond;

if one heating pond is added, two heat exchange water pipes are respectively led into the pond bottom from the outlet of the first heating stop valve 35 and the outlet of the fourth heat collection stop valve 42 by using a water separator so as to heat; if one water pool for refrigeration is added, a heat exchange water pipe is led into the pool bottom from the outlet of the first refrigeration stop valve 37 by using a water separator to perform refrigeration; the air pipe only needs to meet the requirement that each pond is paved at the bottom of the pond from the outlet of the air blower through the stop valve; the monitoring probes only need to meet the requirements of accessing a water temperature monitoring probe and a water quality monitoring probe from the control box 13 in each pond;

plastic greenhouses 15 and 16 are arranged on the ponds 17 and 18 to improve the stability of parameters such as temperature in the ponds; the heating pond 17 is provided with a telescopic straw mat 14 on the greenhouse 15 to weaken the diffusion of heat in the pond to the external environment in the low-temperature environment; the solar PVT plates 32 and 33 with adjustable angles are arranged on the greenhouse 16 through the automatic angle adjusting frame 34, and the working angles of the PVT plates are continuously changed along with the irradiation angles of sunlight so as to ensure that the ponds are all in a shadow area which is not directly irradiated by the sunlight; therefore, the device can be used for reducing the water body temperature rise caused by direct solar irradiation pond under high temperature environment, and can also finish the high-efficiency utilization of solar energy based on photovoltaic photo-thermal characteristics on the premise of reducing the occupied area of PVT plate;

The solar PVT plate consists of a photovoltaic module 32 and a heat collector 33, wherein the heat collector 33 is arranged at the back of the photovoltaic module 32 to recover heat energy generated by the photovoltaic module in the photoelectric conversion process, so that the surface temperature is reduced to improve the photoelectric conversion efficiency of the photovoltaic module 32;

according to the embodiment, the control box 13 and the four-way reversing valve 5 can be used for realizing the staged cultivation of the aquatic products; because most of fishes and shrimps are temperature-variable animals, the growth and propagation environment needs to be kept stable, the embodiment can customize and determine the service conditions of the annual heating pond 17 and the refrigerating pond 18 according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties, and divide the annual time zone into a plurality of service periods of the heating pond and the service period of the refrigerating pond, so that the fluctuation of parameters such as temperature, oxygen content and the like in the annual pond along with the environmental change is finally ensured to be smaller;

because oxygenation requirements exist in the ponds 17 and 18 in aquaculture all the year round, the oxygenation system maintains a working state all the year round, when oxygen content data obtained through monitoring by the water quality monitoring probes 23 and 25 are lower than a standard value, the control box 13 starts a power supply of the blower 12, air is conveyed to the bottom of the pond through the air pipes 62 and 63 for oxygenation, and the oxygenation system is stopped after the oxygen content reaches a set value;

Except for overcast and rainy weather, the aquaculture places are supplied with solar energy, so that the solar energy access system keeps working state continuously all the year except for overcast and rainy weather;

in the photovoltaic power generation subsystem, the photovoltaic module 32 completes conversion of solar energy and electric energy based on the semiconductor photoelectric effect, and the direct current obtained after conversion firstly flows through the inversion control integrated machine 28 to be converted into alternating current required by electrical equipment, and the photovoltaic meter 29 measures the electric quantity generated by the photovoltaic module and stores the electric quantity into the electric storage equipment 30; the generated energy of the photovoltaic module 32 is preferentially applied to electrical equipment in the system, and when the generated energy of the photovoltaic module 32 is larger than the total power consumption of the equipment, the required power of the electrical equipment is completely provided by the photovoltaic module 32, and the residual power is completely connected to the internet 31; when the generated energy of the photovoltaic module 32 is smaller than the total power consumption of the electrical equipment, the generated energy of the photovoltaic module 32 is fully applied to the electrical equipment of the system, and the insufficient part is supplied by the power grid 31;

in the heat collector heat storage subsystem, a heat collector 33 is installed at the back of the photovoltaic panel to recycle a large amount of heat generated in the photovoltaic power generation process; after the heat collecting medium in the heat collector 33 is heated up by absorbing heat, the heat collecting medium is pumped through the first heat collecting stop valve 39 by the solution pump 11 and enters the coil heat exchanger 27 in the heat storage water tank 26, and exchanges heat with low-temperature secondary refrigerant water in the heat storage water tank 26 to store heat energy in the water tank; then, the cooled heat collecting medium is returned to the heat collector 33 through the second heat collecting cutoff valve 40, completing the circulation of the heat collecting medium;

When the heating pond is in the service period, the third heat collection stop valve 41 and the fourth heat collection stop valve 42 are opened, the heated secondary refrigerant water in the heat storage water tank 26 is pumped through the fourth heat collection stop valve 42 by the second water pump 9 and then flows into the second heat exchange water pipe 20 in the heating pond 17 to heat the water in the pond so as to maintain the comfort of the water temperature in the pond in a low-temperature environment; then, the cooled coolant water is pumped by the second water pump 9 to flow through the third heat collection stop valve 41 and finally returned to the heat storage water tank 26, so that the second coolant heating cycle is completed;

when the water tank for refrigeration is in the service period, the water tank for refrigeration 18 has no heating requirement, so the heat energy generated by the solar energy can be transmitted to other places needing heating near the aquaculture land; opening a supplementing water inlet stop valve 43 and a supplementing water outlet stop valve 44, pumping the heated secondary refrigerant water in the heat storage water tank 26 out of the supplementing water outlet stop valve 44 through the third water pump 10, so as to heat other occasions, and enabling low-temperature supplementing water to flow into the heat storage water tank 26 from the third water pump 10 and the supplementing water inlet stop valve 43 in sequence, so that the supplementing water heating cycle is completed;

when the four-way reversing valve 5 is in the service life of the heating pond, the four-way reversing valve 5 is required to be switched into a heating mode; the refrigerant circulation loop, the air circulation loop and the first secondary refrigerant heating circulation loop in the refrigerant circulation system work normally;

The first heating stop valve 35 and the second heating stop valve 36 are opened, high-temperature and high-pressure refrigerant gas discharged from the compressor 6 flows through the first heat exchange channel 1A of the water source heat exchanger 1, is cooled by low-temperature secondary refrigerant pumped to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8, then flows into the electronic expansion valve 2 for throttling and depressurization, and then enters the air source heat exchanger 3 to exchange heat with ambient air conveyed by the axial flow fan 4; finally, low-temperature low-pressure refrigerant gas flowing out of the air source heat exchanger 3 enters the compressor 6 through the four-way reversing valve 5, and the compressed high-temperature high-pressure refrigerant gas flows into the first heat exchange channel 1A of the water source heat exchanger 1 again to complete refrigerant circulation and air circulation;

the coolant water heated in the second heat exchange channel 1B of the water source heat exchanger 1 sequentially passes through the buffer water tank 7 and the first heating stop valve 35, and the first heat exchange water pipe 19 flowing into the heating pond 17 heats water in the pond so as to maintain the comfort of water temperature in the pond in a low-temperature environment. Then, the cooled coolant water flows through the second heating stop valve 36 and is pumped back to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8, so that the first coolant heating cycle is completed;

When the four-way reversing valve 5 is in the service life of the refrigeration pond, the four-way reversing valve 5 is required to be switched into a refrigeration mode, and a refrigerant circulation loop, an air circulation loop and a secondary refrigerant refrigeration circulation loop in the refrigerant circulation system work normally;

the first refrigeration stop valve 37 and the second refrigeration stop valve 38 are opened, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 enters a refrigerant channel of the air source heat exchanger 3 to exchange heat with the ambient air conveyed by the axial flow fan 4; then, the cooled low-temperature high-pressure refrigerant flows into the electronic expansion valve 2 to be throttled and depressurized, and then enters the first heat exchange channel 1A of the water source heat exchanger 1 to absorb heat in the secondary refrigerant water pumped into the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8; finally, the low-temperature low-pressure refrigerant gas flowing out of the first heat exchange channel 1A of the water source heat exchanger 1 enters the compressor 6 through the four-way reversing valve 5, and the compressed high-temperature high-pressure refrigerant gas flows into the refrigerant channel of the air source heat exchanger 3 again to complete refrigerant circulation and air circulation;

the coolant water cooled in the second heat exchange channel 1B of the water source heat exchanger 1 is pumped by the first water pump 8 to the first refrigeration stop valve 37, and the third heat exchange water pipe 21 flowing into the refrigeration pond 18 cools the water in the pond to maintain the comfort of the water temperature in the pond in a high-temperature environment. Then, the coolant water after absorbing heat sequentially enters the second refrigeration stop valve 38 and the buffer water tank 7, and finally is pumped back to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8, so that the coolant refrigeration cycle is completed;

The monitoring and control system needs to maintain the working state all the year round because the monitoring and control of parameters in the pond are needed in the whole aquaculture process; regarding water temperature monitoring and control, when the first water temperature monitoring probe 22 detects that the water temperature is lower than a set value in the service period of the heating pool, the control box 13 starts the compressor 6, the first water pump 8 and the second water pump 9 to heat the pool until the temperature rises to the set value; when the water tank is in the service period of the refrigeration water tank, if the second water temperature monitoring probe 24 detects that the water temperature is higher than the set value, the control box 13 starts the compressor 6 and the first water pump 8 to perform water tank refrigeration until the temperature is reduced to the set value, and then the water tank can be closed; for water quality monitoring regulation, when the water quality monitoring probes 23 and 25 detect that the oxygen content in water is low, the control box 13 starts the air blower 12, and air enters the bottom of the pond through the air blower 12 via the air pipes 62 and 63 to carry out oxygenation, and the air blower is turned off until the oxygen content reaches a set value.

Example 2

The embodiment provides a renewable energy source-based aquatic product staged multi-pond culture low-carbon control system cluster (see fig. 2) for realizing temperature control and oxygenation processes in aquatic product staged culture. As most of fishes and shrimps are temperature-variable animals, the growth and propagation environment needs to be kept stable, and the embodiment can determine the refrigeration/heating requirements of the cultivation in each period of the whole year according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties. The annual time zone is divided into a plurality of heating pond service periods (namely, the heating demand is far greater than the cooling demand) and the cooling pond service period (namely, the cooling demand is far greater than the heating demand) according to the cooling and heating demand ratio, and finally, the annual pond internal temperature, oxygen content and other parameters are ensured to fluctuate less along with the environmental change. The whole system comprises a refrigerant circulation system, a solar energy access system, an oxygenation system, a pipeline connected with equipment in the unit and a monitoring control system thereof;

the refrigerant circulation loop comprises a first heat exchange channel 1A of a water source heat exchanger 1, an electronic expansion valve 2, an air source heat exchanger 3, an axial flow fan 4, a four-way reversing valve 5 and a compressor 6 which are sequentially connected by copper pipes 76, 77, 78, 79, 80 and 81; the air inlet end and the air outlet end of the compressor 6 are respectively communicated with two interfaces 5B and 5D of the four-way reversing valve 5, and the other two interfaces 5A and 5C are respectively communicated with one end of a refrigerant heat exchange channel of the air source heat exchanger 3 and one end of a first heat exchange channel 1A of the water source heat exchanger 1;

the first secondary refrigerant heating circulation loop comprises a second heat exchange channel 1B of the water source heat exchanger 1, a buffer water tank 7, a first heating stop valve 50, a second heating stop valve 51, a first heat exchange water pipe 24, a third heating stop valve 52, a fourth heat exchange water pipe 25, a fourth heating stop valve 53 and a first water pump 8 which are sequentially connected by PVC pipes 82, 83, 84, 85, 86 and 87; the outlet of the first water pump 8 is connected with the inlet of the second heat exchange channel 1B of the water source heat exchanger 1 to form a secondary refrigerant flowing closed loop; the first heat exchange water pipe 24 and the fourth heat exchange water pipe 25 need to be respectively inserted into the bottoms of the first heating pond 20 and the second heating pond 21 to perform sufficient heat exchange;

the secondary refrigerant refrigeration cycle loop comprises a second heat exchange channel 1B, a first water pump 8, a first refrigeration stop valve 54, a second refrigeration stop valve 55, a third heat exchange water pipe 28, a third refrigeration stop valve 56, a sixth heat exchange water pipe 29, a fourth refrigeration stop valve 57 and a buffer water tank 7 of the water source heat exchanger 1 which are sequentially connected by using PVC pipes 82, 87, 86, 88, 89 and 83; the outlet of the buffer water tank 7 is connected with the inlet of the second channel 1B of the water source heat exchanger 1 to form a secondary refrigerant flowing closed loop; the third heat exchange water pipe 28 and the sixth heat exchange water pipe 29 are required to be respectively inserted into the bottoms of the first cooling pond 22 and the second cooling pond 23 to perform sufficient heat exchange;

The solar energy access system comprises a heat collector heat storage subsystem and a photovoltaic power generation subsystem;

the photovoltaic power generation subsystem comprises a first photovoltaic module 44, a first power generation stop valve 58, a second photovoltaic module 45, a second power generation stop valve 59, an inversion control integrated machine 40, a photovoltaic meter 41 and a power storage device 42 which are sequentially connected by using wires 103, 104 and 105;

the first photovoltaic module 44 and the second photovoltaic module 45 are mainly built by semiconductors, and under the normal state, semiconductor atomic nuclei and electrons are tightly combined (in a non-conductor state), but after illumination, the binding force between the atomic nuclei and the electrons is reduced, the atomic nuclei lose the constraint on the electrons, and the electrons become free electrons, so that photoelectric conversion is realized;

the inversion control integrated machine 40 can complete the power conversion of converting the direct current from the photovoltaic modules 44 and 45 into alternating current meeting the equipment requirements, and can simultaneously complete the control of the whole photovoltaic module power generation process;

the combined use of the photovoltaic meter 41 and the electricity storage equipment 42 can accurately measure the storage amount of the electric energy, so that the accurate output and control of the electric quantity required by a user are realized;

The heat collecting medium circulation circuit includes a first heat collector 46, a first heat collecting cutoff valve 60, a second heat collector 47, a second heat collecting cutoff valve 61, a solution pump 11, a third heat collecting cutoff valve 62, a coil heat exchanger 39, a fourth heat collecting cutoff valve 71, a fifth heat collecting cutoff valve 64, and a sixth heat collecting cutoff valve 65, which are sequentially connected using heat collecting medium pipes 95, 96, 97; an outlet of the fifth heat collecting cut-off valve 64 is connected with an inlet of the first heat collector 46, and a sixth heat collecting cut-off valve 65 is connected with an inlet of the second heat collector 47 to form a heat collecting medium flowing closed loop;

the second secondary refrigerant heating circuit comprises a second water pump 9, a seventh heat collection stop valve 66, a heat storage water tank 38, an eighth heat collection stop valve 67, a ninth heat collection stop valve 68, a second heat exchange water pipe 26, a tenth heat collection stop valve 69 and a fifth heat exchange water pipe 27 which are sequentially connected by PVC pipes 90, 91 and 92; the outlet of the second heat exchange water pipe 26 is connected with the inlet of the second water pump 9, and the outlet of the fifth heat exchange water pipe 27 is connected with the inlet of the second water pump 9 to form a secondary refrigerant flowing closed loop; the second heat exchange water pipe 26 and the fifth heat exchange water pipe 27 need to be respectively inserted into the bottoms of the first heating pond 20 and the second heating pond 21 to perform sufficient heat exchange;

the make-up water heating circuit includes a third water pump 10, a make-up water inlet shut-off valve 70, a storage tank 38 and a make-up water outlet shut-off valve 71 connected in sequence using PVC pipes 93, 94;

The heat collecting medium circulation loop and the second secondary refrigerant heating loop are in heat exchange connection through the heat storage water tank 38, high-temperature heat collecting mediums respectively flow out from the outlet of the first heat collector 46 and the outlet of the second heat collector 47, and heat exchange is carried out between the coil heat exchanger 39 entering the interior of the heat storage water tank 38 and low-temperature secondary refrigerant water flowing from the second water pump 9, so that heating of the first heating pond 20 and the second heating pond 21 is realized;

the heat collecting medium circulation loop and the supplementing water heating loop are connected through heat exchange of the heat storage water tank 38, high-temperature heat collecting medium flows out of the outlet of the first heat collector 46 and the outlet of the second heat collector 47 respectively, and the coil heat exchanger 39 entering the interior of the heat storage water tank 38 exchanges heat with low-temperature supplementing water flowing from the third water pump 10, so that heating of other occasions of supplementing water is realized;

the oxygenation system is configured independently of the system and is formed by sequentially connecting a blower 12, a first oxygenation stop valve 72, a second oxygenation stop valve 74, a third oxygenation stop valve 73, a fourth oxygenation stop valve 75 and air pipes 98, 99, 100, 101 and 102; the air pipes 99, 100, 101 and 102 are required to be respectively inserted into the bottoms of the first heating pond 20, the first cooling pond 22, the second heating pond 21 and the second cooling pond 23 so as to fully aerate;

The monitoring control system comprises a control box 13, a first water temperature monitoring probe 30, a second water temperature monitoring probe 32, a third water temperature monitoring probe 31, a fourth water temperature monitoring probe 33, a first water quality monitoring probe 34, a second water quality monitoring probe 36, a third water quality monitoring probe 35 and a fourth water quality monitoring probe 37; one end of the water temperature monitoring probes 30, 31, 32 and 33 and one end of the water quality monitoring probes 34, 35, 36 and 37 are placed inside the pond, and the other end of the water temperature monitoring probes is connected with the control box; the control box 13 is also electrically connected with the compressor 6, the axial flow fan 4, the blower 12, the first water pump 8, the second water pump 9, the third water pump 10, the solution pump 11 and the inversion control integrated machine 40, and the control box 13 receives data of the water temperature monitoring probes 30, 31, 32 and 33 and the water quality monitoring probes 34, 35, 36 and 37 so as to control the opening and closing actions of the compressor 6, the axial flow fan 4, the blower 12, the first water pump 8, the second water pump 9, the third water pump 10, the solution pump 11 and the inversion control integrated machine 40; the control box 13 is provided with a controller which is one of a single chip microcomputer or an x86 architecture, an ARM architecture and a RISC-V architecture processor;

plastic greenhouses 16, 17, 18 and 19 are arranged on the ponds 20, 21, 22 and 23 to improve the stability of parameters such as temperature in the ponds; the heating ponds 20 and 21 are provided with telescopic straw mats 14 and 15 on the greenhouses 16 and 17 so as to weaken the diffusion of heat in the ponds to the external environment in the low-temperature environment; the solar PVT plates 44, 46, 45 and 47 with adjustable angles are arranged on the greenhouses 18 and 19 through the automatic angle adjusting frames 48 and 49, so that the solar PVT plate cooling device can be used for reducing water body temperature rise caused by direct solar pond under high-temperature environment and can also be used for efficiently utilizing solar energy based on photovoltaic photo-thermal characteristics on the premise of reducing the occupied area of the PVT plates;

The first solar PVT plate consists of a first photovoltaic module 44 and a first heat collector 46, and the second solar PVT plate consists of a second photovoltaic module 45 and a second heat collector 47; the heat collectors 46 and 47 are respectively arranged at the back parts of the photovoltaic modules 44 and 45 to recover heat energy generated by the photovoltaic modules in the photoelectric conversion process, so that the surface temperature is reduced to improve the photoelectric conversion efficiency of the photovoltaic modules;

according to the embodiment, the control box 13 and the four-way reversing valve 5 can be used for realizing the staged cultivation of the aquatic products; because most of fishes and shrimps are temperature-variable animals, the growth and propagation environment needs to be kept stable, the embodiment can customize and determine the service conditions of the annual heating ponds 20 and 21 and the refrigerating ponds 22 and 23 according to the climate data of the past 10 years of the cultivation land and the growth characteristics of different cultivation varieties, and divide the annual time zone into a plurality of service periods of the heating ponds and the service periods of the refrigerating ponds, so that the fluctuation of parameters such as temperature, oxygen content and the like in the annual ponds along with the environmental change is finally ensured to be smaller;

because oxygenation demands exist in the ponds 20, 21, 22 and 23 in aquaculture all the year round, the oxygenation system maintains a working state all the year round, when oxygen content data obtained by monitoring by the water quality monitoring probes 34, 35, 36 and 37 are lower than a standard value, the control box 13 starts a power supply of the blower 12, and the oxygenation stop valves 72, 73, 74 and 75 are opened to enable air to be respectively conveyed to the bottoms of the ponds 20, 21, 22 and 23 through the air pipes 99, 101, 100 and 102 for oxygenation until the oxygen content reaches a set value, and then the system is stopped;

in the photovoltaic power generation subsystem, the photovoltaic modules 44 and 45 complete conversion of solar energy and electric energy based on the semiconductor photoelectric effect, and direct current obtained after conversion respectively passes through the power generation stop valves 58 and 59 and flows through the inversion control integrated machine 40 to be converted into alternating current required by electrical equipment, and the electric quantity generated by the photovoltaic modules is measured by the photovoltaic meter 41 and stored in the power storage equipment 42; the generated energy of the photovoltaic modules 44 and 45 is preferentially applied to electrical equipment in the refrigerant circulation system, the oxygenation system and the monitoring control system, and when the total generated energy of the photovoltaic modules is larger than the total power consumption of the equipment, the required power of the electrical equipment is provided by the photovoltaic modules 44 and 45, and the residual power is on the internet 43; when the total power generation amount of the photovoltaic modules is smaller than the total power consumption amount of the electrical equipment, the power generation amounts of the photovoltaic modules 44 and 45 are all applied to the electrical equipment of the system, and the insufficient part is supplied by the power grid 43;

in the heat collector heat storage subsystem, heat collectors 46 and 47 are respectively arranged at the back parts of the photovoltaic modules 44 and 45 to recycle a large amount of heat generated in the photovoltaic power generation process; the first heat collection stop valve 60, the second heat collection stop valve 61, the third heat collection stop valve 62, the fourth heat collection stop valve 63, the fifth heat collection stop valve 64 and the sixth heat collection stop valve 65 are opened, after the heat of the heat collection mediums in the heat collectors 46 and 47 is absorbed and the temperature is raised, the heat collection mediums are pumped through the solution pump 11 through the heat collection stop valves 60 and 61 respectively, flow through the third heat collection stop valve 62 and enter the coil heat exchanger 39 in the heat storage water tank 38, and exchange heat with the low-temperature coolant water in the heat storage water tank 38 to enable heat energy to be stored in the water tank; then, the cooled heat collecting medium passes through a fourth heat collecting stop valve 63, and returns to the heat collectors 46 and 47 through heat collecting stop valves 64 and 65 respectively, so that the circulation of the heat collecting medium is completed;

When the heating pond is in the service period, the seventh heat collection stop valve 66, the eighth heat collection stop valve 67, the ninth heat collection stop valve 68 and the tenth heat collection stop valve 69 are opened, and the heated secondary refrigerant water in the heat storage water tank 38 is pumped through the eighth heat collection stop valve 67 by the second water pump 9 and then flows into the second heat exchange water pipe 26 and the fifth heat exchange water pipe 27 in the first heating pond 20 and the second heating pond 21 respectively, so as to heat the water in the pond to maintain the comfort of the water temperature in the pond in a low-temperature environment; immediately after that, the cooled coolant water is pumped by the second water pump 9 through the seventh heat collecting stop valve 66 and returned to the heat storage tank 38 through the ninth heat collecting stop valve 68 and the tenth heat collecting stop valve 69, respectively, to complete the second coolant heating cycle;

when the water ponds for refrigeration are in the service period, the water ponds for refrigeration 22 and 23 have no heating requirement, so the heat energy generated by the solar energy can be transmitted to other places needing heating near the aquaculture land; opening the makeup water inlet shutoff valve 70 and the makeup water outlet shutoff valve 71, and pumping the heated coolant water in the storage tank 38 out of the makeup water outlet shutoff valve 70 by the third water pump 10 for heating in other places; the low-temperature supplementing water flows into the heat storage water tank 38 from the third water pump 10 and the supplementing water inlet stop valve 70 in sequence, so that the supplementing water heating cycle is completed;

the first heating stop valve 50, the second heating stop valve 51, the third heating stop valve 52 and the fourth heating stop valve 53 are opened, the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 flows through the first heat exchange channel 1A of the water source heat exchanger 1 and is cooled by the low-temperature refrigerant pumped to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8; then, the low-temperature high-pressure refrigerant flows into the electronic expansion valve 2 to be throttled and depressurized, and then enters the air source heat exchanger 3 to exchange heat with the ambient air conveyed by the axial flow fan 4; finally, low-temperature low-pressure refrigerant gas flowing out of the air source heat exchanger 3 enters the compressor 6 through the four-way reversing valve 5, and the compressed high-temperature high-pressure refrigerant gas flows into the first heat exchange channel 1A of the water source heat exchanger 1 again to complete refrigerant circulation and air circulation;

the coolant water heated in the second heat exchange channel 1B of the water source heat exchanger 1 sequentially passes through the buffer water tank 7 and the first heating stop valve 50, flows into the first heat supply pond 20 and the first heat exchange water pipe 24 and the fourth heat exchange water pipe 25 in the second heat supply pond 21 respectively through the second heating stop valve 51 and the second heating stop valve 52, and heats the water in the pond to maintain the comfort of the water temperature in the pond in a low-temperature environment; then, the cooled coolant water is collected into the fourth heating stop valve 53 and pumped back to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8, so as to complete the first coolant heating cycle;

the first refrigeration stop valve 54, the second refrigeration stop valve 55, the third refrigeration stop valve 56 and the fourth refrigeration stop valve 57 are opened, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 enters a refrigerant channel of the air source heat exchanger 3 to exchange heat with the ambient air conveyed by the axial flow fan 4; then, the cooled low-temperature high-pressure refrigerant flows into the electronic expansion valve 2 to be throttled and depressurized, and then enters the first heat exchange channel 1A of the water source heat exchanger 1 to absorb heat in the secondary refrigerant water pumped into the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8; finally, the low-temperature low-pressure refrigerant gas flowing out of the first heat exchange channel 1A of the water source heat exchanger 1 enters the compressor 6 through the four-way reversing valve 5, and the compressed high-temperature high-pressure refrigerant gas flows into the refrigerant channel of the air source heat exchanger 3 again to complete refrigerant circulation and air circulation;

the chilled water cooled in the second heat exchange channel 1B of the water source heat exchanger 1 is pumped to the first refrigeration stop valve 54 by the first water pump 8, and enters the third heat exchange water pipe 28 and the sixth heat exchange water pipe 29 in the first refrigeration pond 22 and the second refrigeration pond 23 respectively through the second refrigeration stop valve 55 and the third refrigeration stop valve 56, so as to cool the water in the pond to maintain the comfort of the water temperature in the pond in a high-temperature environment; then, the coolant water after absorbing heat is led into the fourth refrigeration stop valve 57 to enter the buffer water tank 7, and finally pumped back to the second heat exchange channel 1B of the water source heat exchanger 1 by the first water pump 8, so as to complete the coolant refrigeration cycle;

The monitoring and control system needs to maintain the working state all the year round because the monitoring and control of parameters in the pond are needed in the whole aquaculture process; regarding water temperature monitoring and controlling, when the water temperature monitoring probe 30 or the third water temperature monitoring probe 31 detects that the water temperature is lower than a set value in the service period of the heating pond, the control box 13 starts the compressor 6, the first water pump 8 and the second water pump 9 to heat the corresponding pond until the temperature rises to the set value, and then the water temperature is closed; when the water tank is in the service period of the refrigeration water tank, if the second water temperature monitoring probe 32 or the fourth water temperature monitoring probe 33 detects that the water temperature is higher than the set value, the control box 13 starts the compressor 6 and the first water pump 8 to refrigerate the corresponding water tank until the temperature is reduced to the set value; for water quality monitoring and control, when the water quality monitoring probes 34, 35, 36 and 37 detect that the oxygen content in water is low, the control box 13 starts the air blower 12, air passes through the air pipes 98, 99, 100, 101 and 102 through the air blower 12 and enters the bottom of the pond respectively to carry out oxygenation, and the air blower can be turned off until the oxygen content reaches a set value.

Example 3

Based on embodiments 1 and 2, this embodiment provides an angle-controllable solar energy access system for aquaculture (see fig. 3, i.e., 3-1, 3-2, 3-3). The whole system comprises a photovoltaic power generation circulation loop, a heat storage circulation loop of a heat collector, a heating water circulation loop and a pipeline connected with equipment in the system;

The photovoltaic power generation circulation loop comprises a photovoltaic module 1, an inversion control integrated machine 6, a photovoltaic meter 7 and power storage equipment 8 which are sequentially connected by using wires 18, 19 and 20;

the photovoltaic module 1 is mainly built by semiconductors, under the normal state, semiconductor atomic nuclei and electrons are tightly combined (in a non-conductor state), but after illumination, the bonding force between the atomic nuclei and the electrons is reduced, the atomic nuclei lose the constraint on the electrons, and the electrons are changed into free electrons, so that photoelectric conversion is realized;

the inversion control integrated machine 6 can complete the power conversion of converting the direct current from the photovoltaic module 1 into alternating current meeting the equipment requirement, and can simultaneously complete the control of the whole photovoltaic module power generation process;

the combined use of the photovoltaic meter 7 and the electricity storage equipment 8 can accurately measure the storage amount of the electric energy, so that the accurate output and control of the electric quantity required by a user are realized;

the heat storage circulation loop of the heat collector comprises a heat collector 2, a first heat collection stop valve 14, a coil heat exchanger 11, a second heat collection stop valve 15 and a solution pump 12 which are sequentially connected by using heat collection medium pipelines 21 and 22; the outlet of the solution pump 12 is connected with the inlet of the heat collector 2 to form a heat collecting medium flowing closed loop;

the heating water circulation loop comprises a water pump 13, a heating water inlet stop valve 16, a heat storage water tank 10 and a heating water outlet stop valve 17 which are sequentially connected by PVC pipes 23 and 24;

The solar PVT plate consists of a photovoltaic module 1 and a heat collector 2, wherein the heat collector 2 is arranged at the back of the photovoltaic module 1 to recover heat energy generated by the photovoltaic module in the photoelectric conversion process, so that the surface temperature is reduced to improve the photoelectric conversion efficiency of the photovoltaic module;

a plastic greenhouse 4 is arranged on the pond 5 to improve the stability of parameters such as temperature and the like in the pond, a solar PVT plate with an adjustable angle is arranged on the plastic greenhouse 4 through an automatic angle adjusting frame 3, and the working angle of the PVT plate is continuously changed along with the irradiation angle of sunlight so as to ensure that the pond is in a shadow area which is not directly irradiated by the sunlight;

therefore, the embodiment can not only be used for reducing the water body temperature rise caused by direct solar pond under the high-temperature environment in the aquaculture process, but also can finish the high-efficiency utilization of solar energy based on photovoltaic photo-thermal characteristics on the premise of reducing the occupied area of PVT plates by introducing the angle automatic adjusting frame 3;

except for overcast and rainy weather, the aquaculture places can be supplied with solar energy, so that the system keeps working state continuously all the year except for overcast and rainy weather;

in the photovoltaic power generation circulation loop, the photovoltaic module 1 completes conversion of solar energy and electric energy based on a semiconductor photoelectric effect, and direct current obtained after conversion firstly flows through the inversion control integrated machine 6 to be converted into alternating current required by electrical equipment, and the photovoltaic meter 7 measures electric quantity generated by the photovoltaic module and stores the electric quantity into the power storage equipment 8; the generating capacity of the photovoltaic module 1 is preferentially applied to electrical equipment in the system, and when the generating capacity of the photovoltaic module 1 is larger than the total power consumption of the equipment, the electric quantity required by the electrical equipment is all provided by the photovoltaic module 1, and the residual electric quantity is all on-line 9; when the generated energy of the photovoltaic module 1 is smaller than the total power consumption of the electrical equipment, the generated energy of the photovoltaic module 1 is fully applied to the electrical equipment of the system, and the insufficient part is supplied by the power grid 9;

In the heat storage circulation loop of the heat collector, the heat collector 2 is arranged at the back of the photovoltaic panel to recycle a large amount of heat generated in the photovoltaic power generation process; after the heat collecting medium in the heat collector 2 is heated up through heat absorption by opening the first heat collecting stop valve 14 and the second heat collecting stop valve 15, the heat collecting medium is pumped through the first heat collecting stop valve 14 by the solution pump 12 and enters the coil heat exchanger 11 in the heat storage water tank 10, and exchanges heat with low-temperature heating water in the heat storage water tank 10 to store heat energy in the water tank; then, the cooled heat collecting medium returns to the heat collector 2 through the second heat collecting stop valve 15 to complete the circulation of the heat collecting medium;

the heating water circulation loop is connected with the heat storage circulation loop of the heat collector through the heat storage water tank 10 in a heat exchange mode, a high-temperature heat collecting medium flows out of the outlet of the heat collector 2 and enters the coil heat exchanger 11 in the heat storage water tank 10 through the first heat collection stop valve 14 to exchange heat with low-temperature heating water flowing from the water pump 13, and therefore heating of the heating water is achieved to meet heating of other occasions.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.

Claims

1. The low-carbon control system cluster for the aquaculture in the stage based on renewable energy is used for the low-carbon temperature control and oxygenation process in the aquaculture in the stage, and is characterized in that the low-carbon control system for the aquaculture in the stage comprises a refrigerant circulation system, a solar energy access system and an oxygenation system;

the solar energy access system is used for photovoltaic power generation, stores heat generated in the photovoltaic power generation process and can supplement heat for the heating pond;

2. The low-carbon control system cluster for aquiculture based on renewable energy sources according to claim 1, wherein the refrigerant circulation loop comprises a first heat exchange channel of a water source heat exchanger, an electronic expansion valve, a refrigerant channel of an air source heat exchanger, a four-way reversing valve and a compressor which are connected in sequence;

the interface connected with the exhaust end of the compressor in the four-way reversing valve is communicated with the interface connected with the first heat exchange channel of the water source heat exchanger in the heating mode, and the interface connected with the air suction end of the compressor in the four-way reversing valve is communicated with the interface connected with the air source heat exchanger;

3. The low-carbon control system cluster for the staged aquaculture based on renewable energy sources according to claim 2, wherein the air circulation loop comprises an air source heat exchanger outer wall and an axial flow fan, and the ambient air is directly conveyed back to the environment by the axial flow fan after heat exchange with the air source heat exchanger outer wall, so that the circulation loop is formed;

4. A renewable energy based low-carbon phased array of aquaculture systems according to claim 3, wherein said solar access system comprises a collector heat storage subsystem and a photovoltaic power subsystem;

5. The low-carbon control system cluster for staged aquaculture based on renewable energy according to claim 4, wherein said heat collector heat storage subsystem comprises a heat collecting medium circulation loop, a second coolant heating loop and a make-up water heating loop;

6. The low-carbon control system cluster for staged aquaculture based on renewable energy sources according to claim 5, wherein the oxygenation system comprises a blower, a first oxygenation stop valve/a second oxygenation stop valve and an air duct which are connected in sequence, and the air duct goes deep into the bottom of a heating/cooling pond to perform sufficient oxygenation.

7. The low-carbon control system cluster for aquaculture in stages based on renewable energy sources according to claim 6, further comprising a monitoring control system, wherein the monitoring control system comprises a control box, a first water temperature monitoring probe, a second water temperature monitoring probe, a first water quality monitoring probe and a second water quality monitoring probe;

the control box is also electrically connected with the compressor, the axial flow fan, the blower, the first water pump, the second water pump, the third water pump, the solution pump and the inversion control integrated machine, and the control box receives data of the water temperature monitoring probe and the water quality monitoring probe so as to control the opening and closing actions of the compressor, the axial flow fan, the blower, the first water pump, the second water pump, the third water pump, the solution pump and the inversion control integrated machine.

8. The low-carbon control system cluster for aquiculture based on renewable energy sources, according to claim 5, wherein in the heat storage subsystem of the heat collector, the heat collector is arranged on the back of a photovoltaic panel of the photovoltaic module so as to recycle heat generated in the photovoltaic power generation process;

9. The low-carbon control system cluster for aquiculture based on renewable energy sources according to claim 5, wherein when the aquiculture is in the service life of the heating pond, the third heat collection stop valve and the fourth heat collection stop valve are opened, the heated secondary refrigerant water in the heat storage water tank is pumped by the second water pump to pass through the fourth heat collection stop valve and then flows into the second heat exchange water pipe in the heating pond, the water in the pond is heated to maintain the comfort of the water temperature in the pond in a low-temperature environment, and the cooled secondary refrigerant water is pumped by the second water pump to flow through the third heat collection stop valve and is returned to the heat storage water tank, so that the heating cycle of the second secondary refrigerant is completed;

when the refrigerating pond is in the service life, the refrigerating pond has no heating requirement, so heat generated by solar energy can be conveyed to other occasions needing heating near the aquaculture ground, the supplementing water inlet stop valve and the supplementing water outlet stop valve are opened, the heated secondary refrigerant water in the heat storage water tank flows out of the supplementing water outlet stop valve through the pumping of the third water pump to heat other occasions, and low-temperature supplementing water is pumped by the third water pump to flow into the heat storage water tank through the supplementing water inlet stop valve to be heated, so that the supplementing water heating cycle is completed.

10. The low-carbon control system cluster for aquiculture in stages based on renewable energy sources according to claim 5, wherein when the aquifer is in the service life of the heating pond, the four-way reversing valve is required to be switched to a heating mode, and a refrigerant circulation loop, an air circulation loop and a first secondary refrigerant heating circulation loop in the refrigerant circulation system work normally;