Bioenergy and photovoltaic coupling power generation system

Abstract

The invention discloses a biological energy and photovoltaic coupling power generation system which comprises a biological reaction system, an oil storage tank, a heating device, a water tank, a flash evaporation power generation system, an energy storage device and a photovoltaic power generation device. An outlet of the biological reaction system is connected with an inlet of the oil storage tank, an outlet of the oil storage tank is connected with a fuel inlet of the heating device and a fuel inlet of the flash evaporation power generation system, and the heating device is arranged at the bottom of the water tank. The power transmission end of the flash evaporation power generation system is electrically connected with the power input end of the energy storage device. The power transmission end of the photovoltaic power generation device is electrically connected with the power input end of the energy storage device. The device has the advantages that the device is simple in structure and convenient to operate, and energy consumption is greatly avoided by utilizing rich renewable resources such as photovoltaic energy and biological energy.

Description

Technical field:

[0001] The present invention relates to the technical field of power generation, and in particular to a bioenergy and photovoltaic coupling power generation system. Background technology:

[0002] The rapid development of industrialization has produced a large number of pollutants, which has seriously damaged the ecological balance. In order to achieve sustainable development, people have focused on the development and utilization of bioenergy. As a renewable and minimally polluting energy, bioenergy has incomparable advantages. It is the only energy product that can replace petroleum fuels on a large scale. At the same time, all the life substances of biofuels can enter the biological cycle of the earth, and even the released carbon dioxide will be reabsorbed by plants and participate in the cycle of the earth, achieving zero emissions, so it has great application prospects. At the same time, photovoltaics, as a clean and pollution-free energy, is strongly supported by national policies, so it has a very broad prospect for utilization.

[0003] In order to make full use of limited resources and meet small-scale electricity demand at the same time, there is an urgent need for a power generation technology solution that fully utilizes the combination of bioenergy and photovoltaic power generation. Summary of the invention:

[0004] The purpose of the present invention is to provide a bioenergy and photovoltaic coupling power generation system, in which the structures and functions of the two power generation devices are complementary and can meet the electricity demand during the day and at night.

[0005] The present invention is implemented by the following technical solutions:

[0006] A bioenergy and photovoltaic coupled power generation system, comprising a bioreactor system, an oil storage tank, a heating device, a water tank, a flash evaporation power generation system, an energy storage device and a photovoltaic power generation device;

[0007] The outlet of the bioreactor system is connected to the inlet of the oil storage tank, the outlet of the oil storage tank is respectively connected to the fuel inlet of the heating device and the fuel inlet of the flash evaporation power system, the heating device is placed at the bottom of the water tank, the water outlet of the water tank is connected to the water inlet of the flash evaporation power system, and the power transmission end of the flash evaporation power system is electrically connected to the power inlet end of the energy storage device;

[0008] The power transmission end of the photovoltaic power generation device is electrically connected to the power input end of the energy storage device.

[0009] Preferably, the bioreactor system comprises an incubator and a fermentation box, the inlet and outlet of the incubator are connected to the inlet and outlet of the fermentation box, and the liquid outlet of the fermentation box is the outlet of the bioreactor system.

[0010] Preferably, the heating device comprises an oil pump and a burner, the inlet of the oil pump is the fuel inlet of the heating device, and the outlet of the oil pump is connected to the oil inlet of the burner.

[0011] Preferably, the flash evaporation power generation system includes an evaporator and a steam turbine generator set, the water inlet of the evaporator is the water inlet of the flash evaporation power generation system, the fuel inlet of the evaporator is the fuel inlet of the flash evaporation power generation system, the steam outlet of the evaporator is connected to the air inlet of the steam turbine generator set, and the transmission end of the steam turbine generator set is the transmission end of the flash evaporation power generation system.

[0012] Preferably, it further comprises a condenser, wherein the inlet of the condenser is connected to the air outlet of the steam turbine generator set, and the outlet of the condenser is communicated with the water tank.

[0013] Preferably, the energy storage device comprises a lithium battery pack and an inverter, the power input end of the lithium battery pack is the power input end of the energy storage device, and the power transmission end of the lithium battery pack is electrically connected to the power input end of the inverter.

[0014] Preferably, the photovoltaic power generation device comprises a photovoltaic power generation panel, and the power transmission end of the photovoltaic power generation panel is the power transmission end of the photovoltaic power generation device.

[0015] Preferably, it also includes a thermoelectric generator, a temperature controller, a water pump, and a heat pipe, one end of the heat pipe is connected to the water tank, the other end of the heat pipe is connected to the inlet of the water pump, and the outlet of the water pump is connected to the water tank; the heat pipe is in contact with the hot end of the thermoelectric generator, and the cold end of the thermoelectric generator is placed in the environment; the temperature controller is electrically connected to the water pump; the power transmission end of the thermoelectric generator is electrically connected to the power input end of the energy storage device.

[0016] Advantages of the present invention: The present invention generates electric energy through environmentally friendly and clean renewable energy such as bioenergy, photovoltaics, and temperature difference power generation, which is in line with the concept of green development, is environmentally friendly, and greatly saves energy consumption.

[0017] Secondly, bioenergy is used as fuel to preheat the water in the water tank and provide combustion energy to the evaporator to generate bioenergy steam, which is combined with photovoltaic power generation and then combined with the water tank's water energy temperature difference power generation, and finally the electricity is stored for use, combining into an organic whole. The energy generated by bioenergy and photovoltaics can be circulated in the system, minimizing energy loss and consumption, and maximizing the energy conversion efficiency of the system.

[0018] Finally, the entire system achieves uninterrupted power supply in small-scale areas through the coupling of photovoltaic and bioenergy power generation devices, ensuring the stability of power supply and meeting the basic electricity needs of users. Description of the drawings:

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] In the figure: bioreactor system 1, incubator 1.1, fermentation tank 1.2, oil storage tank 2, heating device 3, oil pump 3.1, burner 3.2, water tank 4, flash evaporation system 5, evaporator 5.1, steam turbine generator set 5.2, energy storage device 6, battery pack 6.1, converter 6.2, photovoltaic power generation device 7, photovoltaic power generation panel 7.1, condenser 8, temperature difference generator 9, temperature controller 10, water pump 11, heat pipe 12. Specific implementation method:

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, a bioenergy and photovoltaic coupled power generation system includes a bioreactor system 1, an oil storage tank 2, a heating device 3, a water tank 4, a flash evaporation power generation system 5, an energy storage device 6 and a photovoltaic power generation device 7;

[0024] The outlet of the bioreactor system 1 is connected to the inlet of the oil storage tank 2, and the outlet of the oil storage tank 2 is respectively connected to the fuel inlet of the heating device 3 and the fuel inlet of the flash evaporation system 5, the heating device 3 is placed at the bottom of the water tank 4, the water outlet of the water tank 4 is connected to the water inlet of the flash evaporation system 5, and the power transmission end of the flash evaporation system 5 is electrically connected to the power inlet end of the energy storage device 6;

[0025] The target substance discharged from the bioreactor system 1 enters the oil storage tank 2 for storage. The outlet of the oil storage tank 2 can be provided with a valve to control the on-off. The target substance goes out of the oil storage tank 2 and enters the heating device 3 as fuel, burns into flames, heats the water in the water tank 4, and the water in the water tank 4 enters the flash evaporation power generation system 5 for steam power generation. Finally, the electric energy is stored in the energy storage device 6. This is the bioenergy power generation process.

[0026] The transmission end of the photovoltaic power generation device 7 is electrically connected to the power input end of the energy storage device 6; the electric energy of the photovoltaic power generation device 7 is stored in the energy storage device 6, which is the photovoltaic power generation process.

[0027] The bioreactor system 1 includes an incubator 1.1 and a fermentation box 1.2. The inlet and outlet of the incubator 1.1 are connected to the inlet and outlet of the fermentation box 1.2, and the liquid outlet of the fermentation box 1.2 is the outlet of the bioreactor system 1. The seed liquid (made from R. opacus PD630 colonies) and the culture medium (composed of a basic culture medium and a lignin carbon source) are poured into the incubator 1.1 to culture the bacteria. The culture temperature is 28°C, the humidity is maintained at above 60%, and the pH of the culture medium is adjusted to be neutral. The cultured strains fall into the fermentation box 1.2, and then the biological conversion process is carried out in the fermentation box 1.2. The product is mainly composed of liquid flammable oils and fats. After being filtered through a filter, the target substance flows into the oil storage tank 2.

[0028] The heating device 3 includes an oil pump 3.1 and a burner 3.2. The inlet of the oil pump 3.1 is the fuel inlet of the heating device 3, and the outlet of the oil pump 3.1 is connected to the oil inlet of the burner 3.2. The target substance is pumped into the burner 3.2 by the oil pump 3.1, sprayed out and ignited for combustion. A temperature controller can be set in the water tank 4. When the temperature of the water tank 4 reaches 50°C, the oil pump 3.1 is controlled to stop working and stop heating. This process is repeated to maintain the temperature of the water tank at 50°C. Preheating is achieved by heating the water stored in the water tank 4. A safety valve can be installed on the upper end of the water tank 4 to prevent excessive pressure from damaging the water tank 4.

[0029] The flash evaporation power generation system 5 includes an evaporator 5.1 and a steam turbine generator set 5.2. The water inlet of the evaporator 5.1 is the water inlet of the flash evaporation power generation system 5, the fuel inlet of the evaporator 5.1 is the fuel inlet of the flash evaporation power generation system 5, the steam outlet of the evaporator 5.1 is connected to the air inlet of the steam turbine generator set 5.2, and the transmission end of the steam turbine generator set 5.2 is the transmission end of the flash evaporation power generation system 5.

[0030] The hot water in the water tank 4 enters the evaporator 5.1 and turns into steam, and the steam is used to generate electricity through the steam turbine generator set 5.2. The generator adopts a DC generator, so the generated electric energy can be directly stored in the energy storage device 6. At the same time, part of the target substance is transported to the combustion chamber of the evaporator 5.1 through a pipeline in another way, and is used as a fuel to provide energy for evaporation to obtain water vapor.

[0031] It also includes a condenser 8, the inlet of the condenser 8 is connected to the outlet of the steam turbine generator set 5.2, and the outlet of the condenser 8 is connected to the water tank 4. The condenser 8 is used to liquefy the water vapor of the steam turbine generator set 5.2 and then flow back to the water tank 4 along the pipeline.

[0032] The energy storage device 6 includes a lithium battery pack 6.1 and an inverter 6.2. The power input end of the lithium battery pack 6.1 is the power input end of the energy storage device 6. The transmission end of the lithium battery pack 6.1 is electrically connected to the power input end of the inverter 6.2. The electric energy generated by the bioenergy and photovoltaic power generation device is stored in the lithium battery pack 6.1. If needed, the inverter 6.2 can convert direct current into alternating current and transmit it to the user end.

[0033] The photovoltaic power generation device 7 comprises a photovoltaic power generation panel 7 . 1 , and the power transmission end of the photovoltaic power generation panel 7 . 1 is the power transmission end of the photovoltaic power generation device 7 .

[0034] It also includes a temperature difference generator 9, a temperature controller 10, a water pump 11, and a heat pipe 12. One end of the heat pipe 12 is connected to the water tank 4, the other end of the heat pipe 12 is connected to the inlet of the water pump 11, and the outlet of the water pump 11 is connected to the water tank 4; the heat pipe 12 is in contact with the hot end of the temperature difference generator 9, and the cold end of the temperature difference generator 9 is placed in the environment; the temperature controller 10 is electrically connected to the water pump 11; the power transmission end of the temperature difference generator 9 is electrically connected to the power input end of the energy storage device 6.

[0035] During the day, when there is sufficient sunlight, the photovoltaic panel 7.1 generates electricity, and the electricity is transmitted to the energy storage device 6. Since the current generated by photovoltaic power generation is direct current, and the energy storage device 6 is mainly composed of lithium batteries, no inverter or other components are required. At night, the photovoltaic panel 7.1 stops running, and the ambient temperature of the entire power generation device is low. The temperature controller 10 starts working. When the ambient temperature is detected to be lower than 10°C, the water pump 11 transfers the 50°C hot water in the water tank 4 to the heat pipe 12, and then returns it to the water tank 4. The temperature of the hot water forms a temperature difference with the ambient temperature, which acts on the thermoelectric generator 9. The thermoelectric generator 9 starts working, and electricity is also generated in the energy storage device 6. As the thermoelectric generator 9 continues to work, its temperature will gradually increase. When the temperature controller 10 detects that the temperature reaches 40°C, it controls the water pump 11 to stop working, and the thermoelectric generator 9 starts to automatically dissipate heat. The ambient temperature gradually decreases until it reaches 10°C, and the water pump starts working again. Therefore, this process is controlled to be repeated through temperature changes.

[0036] Working principle: When the present invention is in use, the target substance (mainly composed of liquid combustible oil) discharged from the bioreactor system 1 enters the oil storage tank 2 for storage. The target substance goes out of the oil storage tank 2 and enters the heating device 3 as fuel, burns into flames, heats the water in the water tank 4, and the water in the water tank 4 enters the flash evaporation power generation system 5 for steam power generation. Finally, the electrical energy is stored in the energy storage device 6. This is the bioenergy power generation process.

[0037] The electric energy of the photovoltaic power generation device 7 is stored in the energy storage device 6, which is the photovoltaic power generation process.

[0038] At night, the photovoltaic panel 7.1 stops running, and the ambient temperature of the entire power generation device is low. The temperature controller 10 starts working. When it detects that the ambient temperature is lower than 10°C, the water pump 11 transfers the 50°C hot water in the water tank 4 to the heat pipe 12, and then returns it to the water tank 4. The temperature of the hot water forms a temperature difference with the ambient temperature, which acts on the thermoelectric generator 9. The thermoelectric generator 9 starts working, and power generation is also stored in the energy storage device 6.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bioenergy and photovoltaic coupled power generation system, characterized in that: It includes a bioreactor system, an oil storage tank, a heating device, a water tank, a flash evaporation system, an energy storage device, and a photovoltaic power generation device; The outlet of the bioreactor system is connected to the inlet of the oil storage tank, the outlet of the oil storage tank is respectively connected to the fuel inlet of the heating device and the fuel inlet of the flash evaporation power system, the heating device is placed at the bottom of the water tank, the water outlet of the water tank is connected to the water inlet of the flash evaporation power system, and the power transmission end of the flash evaporation power system is electrically connected to the power inlet end of the energy storage device; The power transmission end of the photovoltaic power generation device is electrically connected to the power input end of the energy storage device.

2. A bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: The bioreactor system comprises a culture box and a fermentation box. The inlet and outlet of the culture box are connected with the inlet and outlet of the fermentation box. The liquid outlet of the fermentation box is the outlet of the bioreactor system.

3. The bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: The heating device comprises an oil pump and a burner. The inlet of the oil pump is the fuel inlet of the heating device, and the outlet of the oil pump is connected to the oil inlet of the burner.

4. The bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: The flash evaporation power generation system includes an evaporator and a steam turbine generator set. The water inlet of the evaporator is the water inlet of the flash evaporation power generation system, the fuel inlet of the evaporator is the fuel inlet of the flash evaporation power generation system, the steam outlet of the evaporator is connected to the air inlet of the steam turbine generator set, and the power transmission end of the steam turbine generator set is the power transmission end of the flash evaporation power generation system.

5. The bioenergy and photovoltaic coupled power generation system according to claim 4, characterized in that: It also includes a condenser, the inlet of the condenser is connected to the air outlet of the steam turbine generator set, and the outlet of the condenser is communicated with the water tank.

6. The bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: The energy storage device comprises a lithium battery pack and an inverter. The power input end of the lithium battery pack is the power input end of the energy storage device, and the power transmission end of the lithium battery pack is electrically connected to the power input end of the inverter.

7. The bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: The photovoltaic power generation device comprises a photovoltaic power generation panel, and the power transmission end of the photovoltaic power generation panel is the power transmission end of the photovoltaic power generation device.

8. The bioenergy and photovoltaic coupled power generation system according to claim 1, characterized in that: It also includes a temperature difference generator, a temperature controller, a water pump, and a heat pipe, one end of the heat pipe is connected to the water tank, the other end of the heat pipe is connected to the inlet of the water pump, and the outlet of the water pump is connected to the water tank; the heat pipe is in contact with the hot end of the temperature difference generator, and the cold end of the temperature difference generator is placed in the environment; the temperature controller is electrically connected to the water pump; the power transmission end of the temperature difference generator is electrically connected to the power input end of the energy storage device.

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