A bioenergy and photovoltaic coupled power generation system

Abstract

The present invention discloses a bioenergy and photovoltaic coupled power generation system, comprising 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; the outlet of the biological reaction 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 generation system, the heating device is arranged 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 generation system, and the power transmission end of the flash evaporation power generation system is electrically connected to the power input 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. Advantages: The structure of the present invention is simple and the operation is convenient. By utilizing renewable resources with rich reserves such as photovoltaic and bioenergy, energy consumption is greatly avoided.

Description

Technical Field:

[0001] The present invention relates to the technical field of power generation, and particularly to a bioenergy and photovoltaic coupled power generation system. Background Art:

[0002] The rapid development of industrialization has generated a large amount of pollutants, seriously disrupting the ecological balance. For sustainable development, the development and utilization of bioenergy have been emphasized again. As a renewable and minimally polluting energy source, bioenergy has unparalleled advantages. It is the only energy product that can largely replace petroleum fuels. At the same time, all the living 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 earth's cycle, achieving zero emissions. Therefore, it has great application prospects. At the same time, as a clean and pollution-free energy source, photovoltaics is strongly supported by national policies and thus has very broad utilization prospects.

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

[0004] The purpose of the present invention is to provide a bioenergy and photovoltaic coupled power generation system, in which the structures and functions of the two power generation devices are complementary to 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 includes a biological reaction system, an oil storage tank, a heating device, a water tank, a flash steam power generation system, an energy storage device, and a photovoltaic power generation device;

[0007] The outlet of the biological reaction 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 steam power generation 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 steam power generation system. The power transmission end of the flash steam power generation system is electrically connected to the power input 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 biological reaction system includes an incubator and a fermentation tank. The inlet and outlet of the incubator are connected to the inlet and outlet of the fermentation tank. The liquid outlet of the fermentation tank is the outlet of the biological reaction system.

[0010] Preferably, the heating device includes 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 fuel inlet of the burner.

[0011] Preferably, the flash 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 power generation system, the fuel inlet of the evaporator is the fuel inlet of the flash 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 power generation system.

[0012] Preferably, a condenser is further included. The inlet of the condenser is connected to the 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 includes 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 includes a photovoltaic panel, and the power transmission end of the photovoltaic panel is the power transmission end of the photovoltaic power generation device.

[0015] Preferably, a thermoelectric generator, a temperature controller, a water pump, and a heat conduction pipe are further included. One end of the heat conduction pipe is communicated with the water tank, the other end of the heat conduction pipe is connected to the inlet of the water pump, and the outlet of the water pump is communicated with the water tank; the heat conduction 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, clean, and renewable energy sources such as bioenergy, photovoltaic energy, and thermoelectric power generation, which conforms to 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 for bioenergy steam power generation. Combined with photovoltaic power generation, and then combined with the water energy and temperature difference power generation of the water tank, and finally the electric energy is stored and used. It is combined into an organic whole. The energy generated by bioenergy and photovoltaic energy circulates in the system, minimizing energy loss and making the energy conversion efficiency of the system maximized.

[0018] Finally, through the coupling of the photovoltaic and bioenergy power generation devices, the entire system realizes uninterrupted power supply in small-scale areas, ensures the stability of power supply, and meets the basic electricity consumption needs of users. Description of the Drawings:

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

[0021] In the figure: biological reaction 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 steam power generation system 5, evaporator 5.1, steam turbine generator set 5.2, energy storage device 6, battery pack 6.1, inverter 6.2, photovoltaic power generation device 7, photovoltaic panel 7.1, condenser 8, thermoelectric generator 9, temperature controller 10, water pump 11, heat conduction pipe 12. Specific embodiments:

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

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

[0024] The outlet of the biological reaction system 1 is connected to the inlet of the oil storage tank 2. 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 steam power generation 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 steam power generation system 5. The power transmission end of the flash steam power generation system 5 is electrically connected to the power input end of the energy storage device 6;

[0025] The target substance discharged from the biological reaction system 1 enters the oil storage tank 2 for storage. A valve can be set at the outlet of the oil storage tank 2 to control the on-off. The target substance exits from the oil storage tank 2. One way enters the heating device 3 as fuel and burns into a flame to heat the water in the water tank 4. The water in the water tank 4 enters the flash steam power generation system 5 for steam power generation. Finally, the electric energy is stored in the energy storage device 6. This is the process of bioenergy power generation.

[0026] The power 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 biological reaction system 1 includes an incubator 1.1 and a fermentation tank 1.2. The inlet and outlet of the incubator 1.1 are connected to the inlet and outlet of the fermentation tank 1.2, and the liquid outlet of the fermentation tank 1.2 is the outlet of the biological reaction system 1. Pour the seed liquid (prepared from R. opacus PD630 colonies) and the culture medium (composed of a basic medium and a lignin carbon source) into the incubator 1.1 for bacterial cultivation. The cultivation temperature is 28 °C, the humidity is maintained above 60%, and at the same time, the pH of the culture medium is adjusted to neutral. The cultivated bacteria fall into the fermentation tank 1.2, and then the biological conversion process is carried out in the fermentation tank 1.2. The product mainly consists of liquid fuel lipids. After filtration through a filter screen, the target substance flows into the storage oil 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. 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 the heating is stopped. 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 at the upper end of the water tank 4 to prevent damage to the water tank 4 due to excessive pressure.

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

[0030] The hot water in the water tank 4 enters the evaporator 5.1 and turns into steam. The steam is used to generate electricity through the steam turbine generator set 5.2. The generator uses 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 takes another path and is transported to the combustion chamber of the evaporator 5.1 through a pipeline as fuel to provide energy for the evaporated 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 flow back into 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 power transmission end of the lithium battery pack 6.1 is electrically connected to the power input end of the inverter 6.2. The electrical 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 side.

[0033] The photovoltaic power generation device 7 includes a photovoltaic panel 7.1. The power transmission end of the photovoltaic panel 7.1 is the power transmission end of the photovoltaic power generation device 7.

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

[0035] During the day when sunlight is sufficient, the photovoltaic panel 7.1 generates electricity, and the electrical energy 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, components such as an inverter are not required. At night, the photovoltaic panel 7.1 stops operating, and the temperature of the entire power generation device environment is relatively low. The temperature controller 10 starts to work. When it monitors 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 conduction pipe 12 and then back to the water tank 4. The temperature difference between the hot water and the ambient temperature acts on the thermoelectric generator 9, and the thermoelectric generator 9 starts to work, and the generated electricity is also stored in the energy storage device 6. As the thermoelectric generator 9 continues to work, its temperature will gradually rise. 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 dissipate heat automatically. The ambient temperature gradually decreases until it reaches 10°C, and the water pump starts to work again. Therefore, this process is controlled to repeat through the change of temperature.

[0036] Working principle: When the present invention is in use, the target substance (mainly composed of liquid fuel grease) discharged from the biological reaction system 1 enters the storage oil tank 2 for storage. The target substance exits the storage oil tank 2 and enters the heating device 3 as fuel, burning into a flame to heat the water in the water tank 4. The water in the water tank 4 enters the flash steam power generation system 5 for steam power generation, and finally the electrical energy is stored in the energy storage device 6. This is the process of bioenergy power generation.

[0037] The electrical energy of the photovoltaic power generation device 7 is stored in the energy storage device 6. This is the process of photovoltaic power generation.

[0038] At night, the photovoltaic power generation panel 7.1 stops operating, and the ambient temperature of the entire power generation device is relatively low. When the temperature controller 10 starts to work and monitors 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 conduction pipe 12 and then sends it back to the water tank 4. The temperature difference between the hot water and the ambient temperature acts on the thermoelectric generator 9, and the thermoelectric generator 9 starts to work, and the generated electricity is stored in the energy storage device 6.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall 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; 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; 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; The flash evaporation power generation system comprises 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; It also includes a condenser, wherein the inlet of the condenser is connected to the gas outlet of the steam turbine generator set, and the outlet of the condenser is connected to the water tank; 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; 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.

2. A 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.

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