CN217462274U - Superaudio electromagnetic induction heating binary salt energy storage power generation system - Google Patents
Superaudio electromagnetic induction heating binary salt energy storage power generation system Download PDFInfo
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- CN217462274U CN217462274U CN202220143829.7U CN202220143829U CN217462274U CN 217462274 U CN217462274 U CN 217462274U CN 202220143829 U CN202220143829 U CN 202220143829U CN 217462274 U CN217462274 U CN 217462274U
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Abstract
The utility model relates to an energy storage power generation technical field especially relates to a superaudio electromagnetic induction heating binary salt energy storage power generation system. The ultrasonic frequency electromagnetic induction heating equipment is electrically connected with a power grid, an inlet of the ultrasonic frequency electromagnetic induction heating equipment is connected with a normal-temperature molten salt storage tank pipeline, an outlet of the ultrasonic frequency electromagnetic induction heating equipment is connected with a high-temperature molten salt storage tank, and the high-temperature molten salt storage tank is connected with the normal-temperature molten salt storage tank; the high temperature fused salt storage tank export links to each other with fused salt steam generator pipeline, and fused salt steam generator export links to each other with normal atmospheric temperature fused salt storage tank inlet pipe, and fused salt steam generator export links to each other with steam turbine generator inlet pipe, and steam turbine generator exports and links to each other with fused salt steam generator inlet pipe, and steam turbine generator links to each other with the electric wire netting electrical property. The electricity-heat-electricity energy storage power generation is realized by generating heat energy by electric energy and then generating power, the risk of guaranteeing safe power supply and the risk of safety and stability of an electric power system are reduced, and the pressure problem of clean energy consumption is solved.
Description
Technical Field
The utility model relates to an energy storage power generation technical field especially relates to a superaudio electromagnetic induction heating binary salt energy storage power generation system.
Background
With the proposal of the aim of carbon peak carbon neutralization, the development and utilization scale of renewable energy sources is continuously enlarged, and the renewable energy source is the key for realizing low-carbon energy transformation in the future. However, compared with the conventional fossil energy power generation, the renewable energy power generation based on wind energy and solar energy depends on natural conditions, has the characteristics of volatility and intermittence, and brings great impact on the safety and stability of a power grid when being accommodated in a large scale, so that the grid connection and the elimination of wind power and photovoltaic are difficult, and the wind and light abandonment is serious.
In order to solve the problems of wind and light abandonment and peak regulation of a power grid when new energy is accessed into the power grid, ensure the safe and stable operation of the power grid, research and application of an energy storage technology become core hot technologies, accelerate energy technology innovation, and comprehensively improve system peak regulation and new energy consumption capacity. At present, the energy storage technologies for large-scale commercial application include pumped water energy storage and compressed air energy storage. The pumped water energy storage is greatly influenced by condition factors such as terrain, ecological environment and the like, site selection has certain difficulty and limitation, the efficiency is generally about 65-75%, and long-distance power transmission is needed due to a certain distance between the pumped water energy storage and a load center. The geological condition of compressed air energy storage site selection is greatly limited, a large cave is needed for storing compressed air, a gas turbine is matched, a certain amount of gas is used as fuel, and the problem of pressure relief exists.
The binary salt is used as a heat storage medium, so that the loss of electricity-limiting ' wind abandoning ' and ' light abandoning ' of a wind power station and a photovoltaic power station can be effectively reduced, the requirement of large-scale grid connection of renewable energy sources is met, large-scale popularization and application are facilitated, the environmental protection requirements of ' zero pollution ' and ' zero emission ' are realized, and in addition, the functions of ' peak clipping, valley filling ', emergency power support ' and the like can be provided for a power grid. Therefore, the development of binary salt energy storage and power generation is imminent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a superaudio electromagnetic induction heating binary salt energy storage power generation system is provided, realized the electric wire netting and surplus and the low ebb electric energy heating binary salt energy storage, when electric wire netting load demand, will heat "electricity-heat-electricity" energy storage electricity generation mode and method that binary salt converted into steam drive generator as required, it has reduced electric power safety supply guarantee risk and electric power system safety and stability risk, has solved the pressure problem that clean energy was absorbed.
In order to achieve the above object, the utility model adopts the following technical scheme:
a superaudio electromagnetic induction heating binary salt energy storage power generation system comprises superaudio electromagnetic induction heating equipment, a high-temperature molten salt storage tank, a normal-temperature molten salt storage tank, a molten salt steam generator and a steam turbine generator; the ultrasonic frequency electromagnetic induction heating equipment is electrically connected with a power grid, an inlet of a pipeline of the ultrasonic frequency electromagnetic induction heating equipment is connected with a pipeline of a normal-temperature molten salt storage tank, an outlet of the pipeline is connected with a high-temperature molten salt storage tank, and a flow guide port at the upper end of the high-temperature molten salt storage tank is connected with a flow guide port at the upper end of the normal-temperature molten salt storage tank; the high temperature fused salt storage tank export links to each other with fused salt steam generator pipeline, and fused salt steam generator export links to each other with normal atmospheric temperature fused salt storage tank inlet pipe, and fused salt steam generator export links to each other with steam turbine generator inlet pipe, and steam turbine generator exports and links to each other with fused salt steam generator inlet pipe, and steam turbine generator links to each other with the electric wire netting electrical property.
The superaudio electromagnetic induction heating equipment is electrically connected with a power grid through voltage reduction of a transformer.
And the steam turbine generator is electrically connected with the power grid through the voltage boosting of the transformer.
The high-temperature molten salt storage tanks are one or more, and the high-temperature molten salt storage tanks are connected in parallel or in series-parallel through pipelines to form different energy storage and power generation working circuits.
During normal conditions, in order to reduce the working tank heat loss, a plurality of high temperature fused salt storage tanks work in turn, and when special or bad weather met, a plurality of high temperature fused salt storage tanks all can be fully loaded with storage heat energy, do the electric wire netting stand-by power supply, and power consumption shortage when resisting natural disasters and taking place.
And a water pump is arranged on a pipeline connecting the outlet of the steam turbine generator and the inlet of the molten salt steam generator.
The ultrasonic frequency electromagnetic induction heating equipment comprises a charging barrel, an insulating and heat-insulating layer, a spiral electromagnetic induction coil and a frequency conversion and power regulation device; the charging barrel is a barrel made of metal materials, the insulating layer is sleeved outside the charging barrel, the spiral electromagnetic induction coil surrounds the outer surface of the insulating layer, the spiral electromagnetic induction coil is electrically connected with the frequency conversion and power regulation device, and the frequency conversion and power regulation device is electrically connected with the power grid.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an electromagnetic induction heating, electromagnetic induction heating technique are development and application in recent years, and its rate of heating is fast, the temperature is easily controlled, extensively in high temperature heating trades such as industry cast steel stove, quenching process, especially nearly one year technique have breakthrough progress, and the thermal efficiency is up to 98%, can satisfy high frequency and high-power induction heating demand completely.
The utility model discloses a binary salt energy storage, binary salt is mixed by sodium nitrate and potassium nitrate and constitutes, initial melting temperature is 235 ℃, operating temperature 235 ℃ -550 ℃, and all have good thermal stability under the temperature that is less than 600 ℃, its environmental protection, nontoxic, nonflammable, physicochemical characteristic remains stable, high service temperature has, high thermal stability, high specific heat capacity, high convection heat transfer coefficient, the low viscosity, the low saturation characteristic, and investment cost is less than battery energy storage, and easy extension, the security is high.
The utility model discloses be applied to binary salt heat-retaining power generation system with electromagnetic induction heating technique, the electric energy that directly utilizes the electric wire netting surplus and the low ebb is with the storage after the binary salt heating, according to electric wire netting load demand, it is exothermic through the binary salt, change it into the electric energy, compensate wind-powered electricity, photovoltaic electricity, the water and electricity receives special weather and the influence that proruption situation influences the power generation output and is not enough to the stable influence of electric wire netting, realize the large-scale storage of heat, satisfy the extensive requirement of being incorporated into the power networks of renewable energy, be convenient for popularize and apply on a large scale, and realize the environmental protection requirement of "zero pollution" and "zero release", can also play functions such as "the peak clipping fills in the millet" and "emergency power supports", the safe and stable operation of maintenance electric wire netting, and make the electric wire netting level energy storage that utilizes surplus electric energy become one kind of possibility, renewable energy's absorption space and participation user economic benefits have been promoted.
The electric-thermal-electric energy storage power generation is realized by generating heat energy by electric energy and then generating power, the complementation among network, source, load and storage interaction and various energy sources is realized, the risk of guaranteeing the safe supply of electric power and the safety and stability risk of an electric power system are reduced, and the pressure problem of clean energy consumption is solved.
Drawings
FIG. 1 is a schematic view of the structure and a schematic view of the process of the present invention;
fig. 2 is the structural schematic diagram of the superaudio electromagnetic induction heating device of the utility model.
In the figure: 1-superaudio electromagnetic induction heating equipment 2-first high-temperature molten salt storage tank 3-normal-temperature molten salt storage tank 4-molten salt steam generator 5-steam turbine generator 6-step-down transformer 7-water pump 8-step-up transformer 9-second high-temperature molten salt storage tank 11-charging barrel 12-insulating heat-insulating layer 13-spiral electromagnetic induction coil 14-frequency conversion and power regulation device
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings:
[ examples ] A
As shown in figures 1-2, a superaudio frequency electromagnetic induction heating binary salt energy storage power generation system comprises a superaudio frequency electromagnetic induction heating device 1, a first high-temperature molten salt storage tank 2, a normal-temperature molten salt storage tank 3, a molten salt steam generator 4, a steam turbine generator 5 and a second high-temperature molten salt storage tank 9.
The ultrasonic frequency electromagnetic induction heating equipment 1 comprises a charging barrel 11, an insulating layer 12, a spiral electromagnetic induction coil 13, a frequency conversion and power regulation device 14 and a controller. The charging barrel 11 is a barrel made of stainless steel, the charging barrel 11 is provided with an inlet and an outlet, an insulating and heat-insulating layer 12 is arranged outside the charging barrel 11, the insulating and heat-insulating layer 12 is made of a high-strength high-temperature-resistant heat-insulating material, a spiral electromagnetic induction coil 13 surrounds the outer surface of the insulating and heat-insulating layer 12, the spiral electromagnetic induction coil 13 is electrically connected with a frequency conversion and power regulation device 14, the frequency conversion and power regulation device 14 is in the prior art, the output frequency of the frequency conversion and power regulation device 14 is 20kHZ, and the frequency conversion and power regulation device 14 is electrically connected with a power grid through voltage reduction with a step-down transformer 6. The superaudio electromagnetic induction heating equipment 1 is the prior art, has frequency conversion and power regulation functions, and can be subjected to stepless regulation and control according to needs, wherein the stepless regulation and control comprises heating frequency, preset power and a heating group.
First high temperature fused salt storage tank 2 is parallelly connected with fused salt steam generator 4 entrance side in 1 side of super audio frequency electromagnetic induction heating equipment respectively through the pipeline with second high temperature fused salt storage tank 9, and second high temperature fused salt storage tank 9 is parallelly connected with super audio frequency electromagnetic induction heating equipment 1 side in 4 exit sides of fused salt steam generator respectively through the pipeline with normal atmospheric temperature fused salt storage tank 3, and can form endless work circuit as required.
During normal conditions, in order to reduce the working tank heat loss, first high temperature fused salt storage tank 2 and second high temperature fused salt storage tank 9 are in turn circulated with normal atmospheric temperature fused salt storage tank 3 and are worked on, when meetting special or bad weather, first high temperature fused salt storage tank 2 and second high temperature fused salt storage tank 9 all can be fully loaded with storage heat energy, do electric wire netting stand-by power supply, second high temperature fused salt storage tank 9 and normal atmospheric temperature fused salt storage tank 3 carry out the circulation work earlier in order during the electricity generation, first high temperature fused salt storage tank 2 of back and second high temperature fused salt storage tank 9 (replace the normal atmospheric temperature jar) carry out the circulation mode, with this electric shortage when resisting natural disasters and taking place.
The first high-temperature molten salt storage tank 2, the second high-temperature molten salt storage tank 9 and the normal-temperature molten salt storage tank 3 are all made of heat-insulating materials with good heat-insulating performance so as to reduce the heat loss of the binary salt.
The pipeline of 1 pipeline entry of ultrasonic frequency electromagnetic induction heating equipment links to each other with normal atmospheric temperature fused salt storage tank 3 and 9 pipelines of second high temperature fused salt storage tank, and the export links to each other with first high temperature fused salt storage tank 2 and 9 pipelines of second high temperature fused salt storage tank, and first high temperature fused salt storage tank 2, second high temperature fused salt storage tank 9 link to each other through the pipeline respectively with 3 upper end water conservancy diversion mouths of normal atmospheric temperature fused salt storage tank.
First high temperature fused salt storage tank 2, 9 exports of second high temperature fused salt storage tank link to each other with 4 inlet pipe of fused salt steam generator, and 4 bottom exports of fused salt steam generator link to each other with normal atmospheric temperature fused salt storage tank 3, 9 inlet pipe of second high temperature fused salt storage tank, and 4 upper portion exports of fused salt steam generator link to each other with 5 inlet pipe of steam turbine generator, and 5 exports of steam turbine generator link to each other with 4 inlet pipe of fused salt steam generator, are equipped with water pump 7 on the pipeline that links to each other. The steam turbine generator 5 is connected to the grid via a step-up transformer 8.
The outlet and the inlet of the pipeline are both provided with an electric valve for changing the working state and an adjustable dissolved salt pump capable of controlling the flow of the dissolved salt.
The utility model discloses a theory of operation and working process as follows:
1) heating and dissolving the binary mixed molten salt, injecting the binary mixed molten salt into a normal-temperature molten salt storage tank 3, and then transmitting the binary mixed molten salt in the normal-temperature molten salt storage tank 3 to the ultrasonic-frequency electromagnetic induction heating equipment 1;
the utility model discloses a be binary salt (binary mixed molten salt), be formed by 60% sodium nitrate and 40% potassium nitrate mixture, initial melting temperature is 235 ℃, operating temperature 235 ℃ -550 ℃, and all have good thermal stability under the temperature that is less than 600 ℃, its environmental protection, it is nontoxic, nonflammable, physicochemical characteristic remains stable, high service temperature has, high thermal stability, high specific heat capacity, high convection heat transfer coefficient, low viscosity, the low saturation characteristic, and investment cost is less than the battery energy storage, and the fused salt is easy to expand, and the security is high.
2) The superaudio electromagnetic induction heating equipment 1 heats the binary mixed molten salt from 235 ℃ to 550 ℃ by utilizing the surplus and low-valley electric energy of the power grid; the heated binary mixed molten salt is respectively conveyed to a first high-temperature molten salt storage tank 2 and a second high-temperature molten salt storage tank 9 for storage;
at present, the superaudio electromagnetic induction heating technology can realize that a 310-degree precision stainless steel pipe (with the diameter of 300 mm and the wall thickness of 10 mm) is continuously heated to 1100 ℃, through professional measurement and calculation, the flow rate of 1000 tons/hour of binary salt is increased to 550 ℃ from 280 ℃ (the operation temperature of a steam generator reflowing to a normal-temperature tank), the required power of 113.6 megawatts of electric energy is calculated according to 98% of the current operation electric conversion thermal efficiency, the energy storage efficiency is 80.1% calculated according to 1100 tons/hour of a 100 megawatt (condensation point photothermal power station) unit full load, and the energy storage efficiency is close to the theoretical value of the operating pumped storage unit.
Calculating the formula:
1.485(kJ/kg K) x 1000000 kg x (550-280) degree/3600 sec/0.98-113647 KW-113.6 megawatt
100 megawatt x (1000 ton/1100 ton) 91 megawatt
91 megawatt ÷ 113.6 megawatt ÷ 80.1%
Wherein 1.485 is the specific heat capacity of the binary salt.
The electromagnetic induction heating technology heats and stores energy to the hot melting salt, if the electromagnetic induction heating technology is used as an auxiliary heating device of a photo-thermal power station, the staggered-time power generation mode after single energy storage of the photo-thermal power station in the prior operation can be changed, the interaction and complementation of network, source, load and storage can be carried out according to the system operation load requirement, and the flexibility (load and output are adjusted as required) and the high efficiency of the photo-thermal power station operation mode are improved.
3) The binary salt in the first high-temperature molten salt storage tank 2 and the second high-temperature molten salt storage tank 9 is delivered to the molten salt steam generator 4 in a preset manner according to the requirement, heat is released through the high-temperature molten salt, and water in the molten salt steam generator 4 is heated to form steam with a preset steam capacity;
4) the steam turbine generator 5 with preset capacity generates electric energy with preset power, the generated electric energy is boosted by the booster transformer 8 and is connected to a power grid, the conversion from the electric energy to the heat energy is completed, and the purpose of 'electricity-heat-electricity' energy storage and power generation is realized;
5) in a normal operation mode, in order to reduce heat loss, the first high-temperature molten salt storage tank 2 and the normal-temperature molten salt storage tank 3 and the second high-temperature molten salt storage tank 9 and the normal-temperature molten salt storage tank 3 alternately form a heating circulation power generation loop to perform heating circulation power generation, and after being cooled by the high-temperature binary salt of the molten salt steam generator 4, the high-temperature binary salt becomes low-temperature 280-300 ℃ binary salt and flows back to the normal-temperature molten salt storage tank 3 again to wait for next circulation.
6) And in the standby operation mode of the power grid, the first high-temperature molten salt storage tank 2 and the second high-temperature molten salt storage tank 9 can fully load and store heat energy to serve as a standby power supply of the power grid. During power generation, the second high-temperature molten salt storage tank 9 and the normal-temperature molten salt storage tank 3 are sequentially used for cyclic power generation, and then the first high-temperature molten salt storage tank 2 and the second high-temperature molten salt storage tank 9 (replacing the normal-temperature tank) are used for cyclic power generation, so that power shortage during natural disasters is resisted.
The utility model discloses an electromagnetic induction heating, electromagnetic induction heating technique are development and application in recent years, and its rate of heating is fast, the temperature is easily controlled, extensively in high temperature heating trades such as industry cast steel stove, quenching process, especially nearly one year technique have breakthrough progress, and the thermal efficiency is up to 98%, can satisfy high frequency and high-power induction heating demand completely.
The utility model discloses a binary mixed fused salt (be referred to as binary salt for short) energy storage, binary mixed fused salt is mixed by sodium nitrate and potassium nitrate and constitutes, initial fusing temperature is 235 ℃, operating temperature 235 ℃ -550 ℃, and all have good thermal stability under the temperature that is less than 600 ℃, its environmental protection, nontoxic, nonflammable, the physicochemical characteristic remains stable, high service temperature has, high thermal stability, high specific heat capacity, high convection heat transfer coefficient, low viscosity, the low saturation characteristic, and investment cost is less than the battery energy storage, and fused salt easily expands, the security is high.
The utility model discloses be applied to binary salt heat-retaining power generation system with electromagnetic induction heating technique, directly utilize the electric wire netting surplus and the millet electric energy with the storage after the binary salt heating, it is exothermic through the binary salt when the electric wire netting needs, change it into the electric energy, compensate wind-powered electricity, photovoltaic electricity, the water and electricity receives special weather and the influence that proruption situation influences the power generation output not enough to the electric wire netting stability, realize the large-scale storage of heat, satisfy the extensive requirement of being incorporated into the power networks of renewable energy, be convenient for popularize and apply on a large scale, and realize the environmental protection requirement of "zero pollution" and "zero release", can also play functions such as "the millet is filled out to the peak clipping" and "emergency power supports", the power consumption safety of maintenance electric wire netting, and make the electric wire netting level energy storage that utilizes surplus clean electric energy become one kind of possibility, renewable energy's absorption space and participation user economic benefits have been promoted.
The system realizes 'electricity-heat-electricity' energy storage power generation by generating heat energy by electric energy and then generating power, realizes the complementation between network, source, load and storage interaction and various energy sources, reduces the risk of guaranteeing the safe supply of electric power and the safe and stable risk of an electric power system, and solves the pressure problem of clean energy consumption.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a superaudio electromagnetic induction heating binary salt energy storage power generation system which characterized in that: the system comprises a superaudio frequency electromagnetic induction heating device, a high-temperature molten salt storage tank, a normal-temperature molten salt storage tank, a molten salt steam generator and a steam turbine generator; the ultrasonic frequency electromagnetic induction heating equipment is electrically connected with a power grid, an inlet of a pipeline of the ultrasonic frequency electromagnetic induction heating equipment is connected with a pipeline of a normal-temperature molten salt storage tank, an outlet of the pipeline is connected with a high-temperature molten salt storage tank, and a flow guide port at the upper end of the high-temperature molten salt storage tank is connected with a flow guide port at the upper end of the normal-temperature molten salt storage tank; the high temperature fused salt storage tank export links to each other with fused salt steam generator pipeline, and fused salt steam generator export links to each other with normal atmospheric temperature fused salt storage tank inlet pipe, and fused salt steam generator export links to each other with steam turbine generator inlet pipe, and steam turbine generator exports and links to each other with fused salt steam generator inlet pipe, and steam turbine generator links to each other with the electric wire netting electrical property.
2. The superaudio electromagnetic induction heating binary salt energy storage power generation system of claim 1, wherein: the superaudio electromagnetic induction heating equipment is electrically connected with a power grid through voltage reduction of a transformer.
3. The superaudio electromagnetic induction heating binary salt energy storage power generation system of claim 1, wherein: and the steam turbine generator is electrically connected with the power grid through the voltage boosting of the transformer.
4. The superaudio electromagnetic induction heating binary salt energy storage power generation system of claim 1, wherein: the high-temperature molten salt storage tanks are one or more, and the high-temperature molten salt storage tanks are connected in parallel or in series-parallel through pipelines.
5. The superaudio electromagnetic induction heating binary salt energy storage power generation system of claim 1, wherein: and a water pump is arranged on a pipeline connecting the outlet of the steam turbine generator and the inlet of the molten salt steam generator.
6. The superaudio electromagnetic induction heating binary salt energy storage power generation system of claim 1, wherein: the superaudio electromagnetic induction heating equipment comprises a charging barrel, an insulating and heat-insulating layer, a spiral electromagnetic induction coil and a frequency conversion and power regulation device; the charging barrel is a barrel made of metal materials, the insulating layer is sleeved outside the charging barrel, the spiral electromagnetic induction coil is wound on the outer surface of the insulating layer in a surrounding mode, the spiral electromagnetic induction coil is electrically connected with the frequency conversion and power regulation device, and the frequency conversion and power regulation device is electrically connected with a power grid.
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