阅读说明：本技术 一种绿色智能供能系统 (Green intelligent energy supply system ) 是由 梁超琪 奚军 于 2021-07-21 设计创作，主要内容包括：本发明提供一种绿色智能供能系统,包括供配电系统、光催化制氢系统、氢燃料电池系统、氢气加注系统、地热发电系统、地源热泵系统和供热系统；供配电系统的输入电源共四路,输出电源提供客户端供电和上网供电；光催化制氢系统干燥氢气一路送入氢燃料电池系统,另一路送入氢气加注系统；氢燃料电池系统接入供配电系统中的电源转换装置实现燃料电池发电；氢气加注系统用于满足终端用户加气需求；地热发电系统送入供配电系统中的电源转换装置实现地热发电,并将蒸汽余热提供给供热系统,地源热泵系统获取地热热水提供给供热系统。本发明根据多种自然能源特性,结合多项跨领域的新能源技术,实现了多种能源的互补,供能的多样性,还提供了稳定的电源、热源、冷源、氢气。(The invention provides a green intelligent energy supply system, which comprises a power supply and distribution system, a photocatalytic hydrogen production system, a hydrogen fuel cell system, a hydrogen filling system, a geothermal power generation system, a ground source heat pump system and a heat supply system, wherein the power supply and distribution system is connected with the photocatalytic hydrogen production system; the input power supply of the power supply and distribution system has four paths, and the output power supply provides power for the client and power supply for internet; one path of dry hydrogen of the photocatalytic hydrogen production system is sent into a hydrogen fuel cell system, and the other path of dry hydrogen is sent into a hydrogen filling system; the hydrogen fuel cell system is connected to a power conversion device in the power supply and distribution system to realize the power generation of the fuel cell; the hydrogen filling system is used for meeting the gas filling requirements of end users; the geothermal power generation system sends power conversion devices in the power supply and distribution system to realize geothermal power generation, steam waste heat is provided for the heat supply system, and the ground source heat pump system obtains geothermal hot water and provides the geothermal hot water for the heat supply system. The invention combines a plurality of new energy technologies across fields according to the characteristics of various natural energy resources, realizes the complementation of various energy resources and the diversity of energy supply, and also provides a stable power supply, a heat source, a cold source and hydrogen.)

1. A green intelligent energy supply system is characterized by comprising a power supply and distribution system, a photocatalytic hydrogen production system, a hydrogen fuel cell system, a hydrogen filling system, a geothermal power generation system, a ground source heat pump system and a heat supply system;

the input power supplies of the power supply and distribution system are four in number and respectively receive distributed photovoltaic power generation, distributed wind power generation, fuel cell power generation and geothermal power generation, and the output power supplies at least respectively provide power supply for a client and power supply for internet;

the photocatalytic hydrogen production system is used for decomposing water into hydrogen and oxygen, one path of finally obtained dry hydrogen is sent to the hydrogen fuel cell system, and the other path of finally obtained dry hydrogen is sent to the hydrogen filling system;

the hydrogen fuel cell system is used for outputting electric energy through electrochemical reaction and is connected to a power conversion device in the power supply and distribution system to realize power generation of the fuel cell;

the hydrogen filling system is used for meeting the gas filling requirements of end users;

the geothermal power generation system is used for acquiring steam from a geothermal source, converting the steam into electric energy, sending the electric energy into a power conversion device in the power supply and distribution system to realize geothermal power generation, and supplying steam waste heat to the heat supply system;

the ground source heat pump system is used for obtaining hot water of a geothermal source and providing the hot water for the heating system.

2. The green intelligent energy supply system according to claim 1, further comprising a centrifugal refrigerating unit, wherein the output power source of the power supply and distribution system is further divided into a branch for supplying power to the centrifugal refrigerating unit.

3. The system of claim 1, further comprising an absorption chiller driven by steam generated by the geothermal power generation system.

4. The green intelligent energy supply system according to claim 3, wherein the geothermal power generation system comprises a geothermal steam extraction device, a steam purifier and a steam turbine power generation device which are connected in sequence, and steam extracted from geothermal energy passes through the steam purifier to obtain dry steam which is divided into three parts to be output; the first part is sent to a steam turbine power generation device to generate electric energy, the second part is sent to the photocatalytic hydrogen production system to be used for drying hydrogen, and the third part is sent to the absorption refrigerating unit; the condensed water of the turbine power generation device is injected into the ground to maintain the balance of the ground water.

5. The green intelligent energy supply system according to claim 4, wherein the photocatalytic hydrogen production system comprises a photocatalytic hydrogen production device, a hydrogen separator, a hydrogen dryer, a hydrogen pressurizer, a high-pressure hydrogen controller and a hydrogen storage device which are connected in sequence; the hydrogen dryer is provided with a dry steam inlet and a condensed water outlet, wherein the dry steam inlet is connected with one output end of a steam purifier in the geothermal power generation system; the hydrogen storage device is provided with a hydrogen pipeline and a multi-way connector.

6. The green intelligent energy supply system according to claim 5, wherein the hydrogen gas filling system comprises a hydrogen gas filling machine, a gas supply pipeline and a valve arranged on the gas supply pipeline, the input end of the gas supply pipeline is connected with one of the connection ports arranged on the hydrogen gas storage device, and the output end of the gas supply pipeline is connected to the hydrogen gas filling machine.

7. The green intelligent energy supply system according to claim 1, wherein the ground source heat pump system comprises a geothermal water extraction device, a ground source heat pump unit and a water purification tank, and the extracted hot water is injected into the ground after heat is extracted by the ground source heat pump unit so as to maintain the balance of the ground water; the ground source heat pump unit converts the absorbed heat into hot water and sends the hot water to the heat supply system, and the water purification tank supplements the water consumed in the ground source heat pump system to form hot water supply circulation.

8. The system of claim 7, wherein the hydrogen fuel cell system comprises a hydrogen fuel cell stack, an air guiding device and a hydrogen control valve, dry hydrogen from the photocatalytic hydrogen production system is introduced into the hydrogen fuel cell stack through the hydrogen control valve, the air guiding device provides air which is also introduced into the hydrogen fuel cell stack, and electric energy and water are output through electrochemical reaction, wherein the electric energy is connected to a power conversion device in the power supply and distribution system, and the water is discharged to the clean water tank.

9. The green intelligent energy supply system of claim 1, further comprising a charging pile system, wherein an output power source of the power supply and distribution system is further divided into a path to supply power to the charging pile system through electrical control.

10. The green intelligent energy supply system according to claim 3, wherein the working medium adopted by the absorption refrigerating unit is a lithium bromide aqueous solution.

Technical Field

The invention belongs to the field of new energy application, and relates to a system for realizing comprehensive energy supply of cold, heat, electricity and hydrogen by adopting new energy such as solar energy, geothermal energy and the like.

Background

Solar energy is a form of energy released by the sun as a result of photon motion. Sunlight is composed of photons as basic particles, and has a particle property and a wave property, which is called a wave-particle duality. Solar energy is a renewable energy source and also a clean energy source without pollution.

Geothermal energy is renewable energy from the ground surface, the heat source of the geothermal energy mainly comprises melting magma of the earth, decay of radioactive substances and solar energy, the geothermal energy is taken to the near surface layer from the deep underground after the circulation of underground water and the magma at the extremely deep position are poured into the crust, the geothermal energy is novel pollution-free clean energy, and the geothermal energy stored in 2000 m from the ground surface is 2500 hundred million tons of standard coal. Nationwide geothermal energy is available in quantities of 68 billion cubic meters per year, containing 973 trillion kilojoules of geothermal energy.

The photocatalytic hydrogen production utilizes light energy to excite electrons in a semiconductor catalyst to jump to a conduction band so as to realize the separation of electrons and holes, the generated electrons and holes are transferred to the surfaces of particles under the action of an internal electric field, water molecules adsorbed on the semiconductor catalyst are oxidized into oxygen by the holes with strong oxidizability, and simultaneously the generated hydrogen ions are reduced into hydrogen by the electrons after being transferred in electrolyte.

A hole reaction formula: h₂O+h⁺→O₂+H⁺

Electron reaction formula: h⁺+e^－→H₂

The hydrogen fuel cell mainly comprises an anode, a cathode and an electrolyte, wherein the anode is a hydrogen electrode, the cathode is an oxygen electrode, and the electrolyte is arranged between the two electrodes. The working principle is as follows:

under the action of an anode catalyst, 1 hydrogen molecule is separated into 2 hydrogen protons, 2 electrons are released, and the anode reaction is as follows: h₂→2H⁺+2e；

Under the action of the cathode catalyst, oxygen molecules and hydrogen ions react with electrons reaching the cathode through an external circuit to generate water, and the cathode reaction is as follows: 0.5O₂+2H⁺+2e→H₂O

The overall chemical reaction is: h₂+0.5O₂＝H₂O

The electrons form a direct current in the external circuit.

The utilization of geothermal energy is divided into power generation and heat supply. The geothermal energy power generation is to extract geothermal energy in the form of steam or hot water, then convert the thermal energy in the steam or hot water into mechanical energy, and finally convert the mechanical energy into electric energy for users to use; the geothermal energy heat supply is to extract the geothermal energy in the form of hot water and provide heat supply or hot water for users after passing through a ground source heat pump.

The lithium bromide absorption refrigerator uses lithium bromide water solution as working medium, in which water is refrigerant and lithium bromide is absorbent. The lithium bromide belongs to salts, is white crystal, is easily soluble in water and alcohol, is non-toxic and stable in chemical property, and the boiling point of the lithium bromide aqueous solution is very high and is very difficult to volatilize.

The lithium bromide absorption refrigerator is mainly composed of a generator, a condenser, an evaporator, an absorber, a heat exchanger, a circulating pump and the like.

After the lithium bromide water solution is heated by the heating medium water in the generator, the water in the solution is continuously vaporized; along with the continuous vaporization of water, the concentration of the lithium bromide aqueous solution in the generator is continuously increased, and the high-concentration lithium bromide aqueous solution enters an absorber; the water vapor enters a condenser, is cooled by cooling water in the condenser and then is condensed to form high-pressure low-temperature liquid water; when the water in the condenser enters the evaporator through the throttle valve, the water expands rapidly to be vaporized, and absorbs a large amount of heat of the refrigerant water in the evaporator in the vaporization process, thereby achieving the purpose of cooling and refrigeration; in the process, low-temperature water vapor enters the absorber, is absorbed by the lithium bromide aqueous solution in the absorber, the concentration of the solution is gradually reduced, and then the solution is sent back to the generator by the circulating pump to complete the whole circulation.

The centrifugal refrigerator consists of centrifugal refrigerating compressor, main motor, evaporator, condenser, throttle unit, compressor inlet energy regulating mechanism, exhaust and recovering unit, lubricating oil system and control system. Meanwhile, refrigerant (gas state) in the evaporator enters the condenser after being boosted by the centrifugal refrigeration compressor, the refrigerant (gas state) is changed into low-temperature high-pressure refrigerant (liquid state) in the condenser through heat exchange with a cooling medium, and finally the low-temperature low-pressure refrigerant (liquid state) is sent to the evaporator through throttling and pressure reduction of the expansion valve to absorb heat of cold water in the heat transfer pipe, so that circulation is formed.

The complementation of multiple energy sources is realized, and the diversity of energy supply is the development trend.

Disclosure of Invention

In order to realize green energy supply and overcome the technical barriers at present, the invention provides a green intelligent energy supply system, which has the following technical scheme:

a green intelligent energy supply system comprises a power supply and distribution system, a photocatalytic hydrogen production system, a hydrogen fuel cell system, a hydrogen filling system, a geothermal power generation system, a ground source heat pump system and a heat supply system;

the input power supplies of the power supply and distribution system are four in number and respectively receive distributed photovoltaic power generation, distributed wind power generation, fuel cell power generation and geothermal power generation, and the output power supplies at least respectively provide power supply for a client and power supply for internet;

the photocatalytic hydrogen production system is used for decomposing water into hydrogen and oxygen, one path of finally obtained dry hydrogen is sent to the hydrogen fuel cell system, and the other path of finally obtained dry hydrogen is sent to the hydrogen filling system;

the hydrogen fuel cell system is used for outputting electric energy through electrochemical reaction and is connected to a power conversion device in the power supply and distribution system to realize power generation of the fuel cell;

the hydrogen filling system is used for meeting the gas filling requirements of end users;

the geothermal power generation system is used for acquiring steam from a geothermal source, converting the steam into electric energy, sending the electric energy into a power conversion device in the power supply and distribution system to realize geothermal power generation, and supplying steam waste heat to the heat supply system;

the ground source heat pump system is used for obtaining hot water of a geothermal source and providing the hot water for the heating system.

Preferably, the system further comprises a centrifugal refrigerating unit, and the output power supply of the power supply and distribution system is further divided into one path to supply power to the centrifugal refrigerating unit.

Preferably, the system further comprises an absorption refrigeration unit driven by steam generated by the geothermal power generation system.

Preferably, the geothermal power generation system comprises a geothermal steam extraction device, a steam purifier and a steam turbine power generation device which are connected in sequence, wherein the steam extracted from geothermal energy passes through the steam purifier to obtain dry steam which is divided into three parts to be output; the first part is sent to a steam turbine power generation device to generate electric energy, the second part is sent to the photocatalytic hydrogen production system to be used for drying hydrogen, and the third part is sent to the absorption refrigerating unit; the condensed water of the turbine power generation device is injected into the ground to maintain the balance of the ground water.

Preferably, the photocatalytic hydrogen production system comprises a photocatalytic hydrogen production device, a hydrogen separator, a hydrogen dryer, a hydrogen pressurizer, a high-pressure hydrogen controller and a hydrogen storage device which are connected in sequence; the hydrogen dryer is provided with a dry steam inlet and a condensed water outlet, wherein the dry steam inlet is connected with one output end of a steam purifier in the geothermal power generation system; the hydrogen storage device is provided with a hydrogen pipeline and a multi-way connector.

Preferably, the hydrogen filling system comprises a hydrogen filling machine, a gas supply pipeline and a valve arranged on the gas supply pipeline, wherein the input end of the gas supply pipeline is connected with one of the connecting ports arranged on the hydrogen storage device, and the output end of the gas supply pipeline is connected to the hydrogen filling machine.

Preferably, the ground source heat pump system comprises a geothermal water extraction device, a ground source heat pump unit and a water purification tank, and the extracted hot water is injected underground after being extracted with heat by the ground source heat pump unit so as to maintain the balance of underground water; the ground source heat pump unit converts the absorbed heat into hot water and sends the hot water to the heat supply system, and the water purification tank supplements the water consumed in the ground source heat pump system to form hot water supply circulation.

Preferably, the hydrogen fuel cell system comprises a hydrogen fuel cell set, an air guiding device and a hydrogen control valve, dry hydrogen from the photocatalytic hydrogen production system is introduced into the hydrogen fuel cell set through the hydrogen control valve, the air guiding device provides air and is also introduced into the hydrogen fuel cell set, electric energy and water are output through electrochemical reaction, wherein the electric energy is connected to a power supply conversion device in the power supply and distribution system, and the water is discharged to the water purifying tank.

The preferred still includes and fills the electric pile system, the output power of power supply and distribution system still divides one way and supplies power for filling the electric pile system through electrical control.

Preferably, the working medium adopted by the absorption refrigerating unit is a lithium bromide aqueous solution.

The invention has the following beneficial effects:

according to the characteristics of various natural energy sources, the invention combines a plurality of new energy source technologies across fields, not only realizes the complementation of various energy sources, but also realizes the diversity of energy supply, and can provide stable power supply, heat source, cold source and hydrogen.

Furthermore, the energy sources are complementary, the energy utilization rate is high, and the energy supply is more stable.

Furthermore, the power supply system adopts a centralized power supply and distribution mode, can generate more power to surf the internet during the peak of a power grid, and can store energy by utilizing the hydrogen storage device per se during the valley so as to cut the peak and fill the valley, thereby achieving the most economic operation state.

Furthermore, the charging pile and the hydrogen filling machine provided by the invention meet the comprehensive supply requirements of future automobile energy, are one of the design modes of future comprehensive power stations, and can be widely popularized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the principles of the present invention;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention combines the traditional geothermal technology, fuel cell technology, refrigeration technology, photocatalytic hydrogen production technology and other new energy technologies across fields to solve the problem of comprehensive energy supply of power, heat, cold and hydrogen.

A green intelligent energy supply system comprises a power supply and distribution system, a photocatalytic hydrogen production system, a hydrogen fuel cell system, a hydrogen filling system, a geothermal power generation system, a ground source heat pump system and a heat supply system; the input power supply of the power supply and distribution system has four paths, respectively receives distributed photovoltaic power generation, distributed wind power generation, fuel cell power generation and geothermal power generation, and the output power supply at least respectively provides client power supply and internet power supply, and can also be used for charging pile power supply, centrifugal refrigerating unit power supply and the like.

The photocatalytic hydrogen production system is used for decomposing water into hydrogen and oxygen, and one path of finally obtained dry hydrogen is sent to the hydrogen fuel cell system, and the other path of finally obtained dry hydrogen is sent to the hydrogen filling system;

the photocatalytic hydrogen production system comprises a photocatalytic hydrogen production device, a hydrogen separator, a hydrogen dryer, a hydrogen pressurizer, a high-pressure hydrogen controller and a hydrogen storage device which are sequentially connected; the hydrogen dryer is provided with a dry steam inlet and a condensed water outlet, wherein the dry steam inlet is connected with one output end of a steam purifier in the geothermal power generation system; the hydrogen storage device is provided with a hydrogen pipeline and a multi-way connector, and the end convenient to use is butted.

The hydrogen fuel cell system is used for outputting electric energy through electrochemical reaction and is connected to a power conversion device in the power supply and distribution system to realize power generation of the fuel cell;

the hydrogen fuel cell system comprises a hydrogen fuel cell set, an air guiding device and a hydrogen control valve, dry hydrogen from the photocatalytic hydrogen production system is introduced into the hydrogen fuel cell set through the hydrogen control valve, the air guiding device provides air and is also introduced into the hydrogen fuel cell set, electric energy and water are output through electrochemical reaction, the electric energy is connected to a power supply conversion device in the power supply and distribution system, and the water is discharged to the water purifying tank.

The hydrogen filling system is used for meeting the gas filling requirements of end users;

the hydrogen filling system comprises a hydrogen filling machine, a gas supply pipeline and a valve arranged on the gas supply pipeline, wherein the input end of the gas supply pipeline is connected with one of the connectors arranged on the hydrogen storage device, and the output end of the gas supply pipeline is connected to the hydrogen filling machine.

The geothermal power generation system is used for acquiring steam of a geothermal source, converting the steam into electric energy, sending the electric energy into a power conversion device in the power supply and distribution system to realize geothermal power generation, and providing steam waste heat for the heat supply system;

the geothermal power generation system comprises a geothermal steam extraction device, a steam purifier and a steam turbine power generation device which are sequentially connected, wherein the steam extracted from geothermal energy passes through the steam purifier to obtain dry steam which is output in three parts; the first part is sent to a steam turbine power generation device to generate electric energy, the second part is sent to a photocatalytic hydrogen production system to be used for drying hydrogen, and the third part is sent to an absorption refrigerating unit; the condensed water of the turbine power generation device is injected into the ground to maintain the balance of the ground water.

The ground source heat pump system is used for obtaining hot water of a geothermal source and providing the hot water for the heating system.

The ground source heat pump system comprises a geothermal water extraction device, a ground source heat pump unit and a water purification tank, wherein the extracted hot water is injected underground after being extracted with heat by the ground source heat pump unit so as to maintain the balance of the underground water; the ground source heat pump unit converts the absorbed heat into hot water and sends the hot water to the heat supply system, and the water purification tank supplements the water consumed in the ground source heat pump system to form hot water supply circulation.

The heating system is shared by the geothermal power generation system and the ground source pump system, wherein the hot water load is provided by the ground source heat pump system.

The green intelligent energy supply system also comprises a refrigerating system, wherein the refrigerating system comprises a centrifugal refrigerating unit and an absorption refrigerating unit, the centrifugal refrigerating unit is also divided into one path by an output power supply of the power supply and distribution system to supply power for the centrifugal refrigerating unit, namely the centrifugal refrigerating unit is driven by a power supply of the power supply conversion device to supply power.

The absorption refrigerating unit is driven by steam generated by a geothermal power generation system, and a working medium adopted by the absorption refrigerating unit is a lithium bromide aqueous solution.

Still including filling the electric pile system, the output power of power supply and distribution system still divides the electric control of the same way for filling the electric pile system power supply.

According to the characteristics of various natural energy sources, the invention combines a plurality of new energy source technologies across fields, not only realizes the complementation of various energy sources, but also realizes the diversity of energy supply, and can provide stable power supply, heat source, cold source and hydrogen. Compared with the traditional single energy supply system, the energy utilization rate is higher, and the energy supply is more stable. The invention adopts a centralized power supply and distribution mode, can generate more power to surf the internet during the peak of a power grid, and can store energy by utilizing the hydrogen storage device of the system during the valley so as to cut the peak and fill the valley, thereby achieving the most economic operation state. The charging pile and the hydrogen filling machine provided by the invention meet the comprehensive supply requirements of future automobile energy, are one of the design modes of future comprehensive power stations, and can be widely popularized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.