阅读说明：本技术 一种基于储能的沙漠昼夜温差能发电系统 (Desert day and night temperature difference energy power generation system based on energy storage ) 是由 王佳典 王璞尧 吴哲 陈龙 韩卿洋 于 2020-12-01 设计创作，主要内容包括：本发明的目的在于提供一种基于储能的沙漠昼夜温差能发电系统,包括储热模块、蓄冷模块、分离器、透平和发电机,储热模块通过储热砖搭建堆砌而成,储热砖换热管均匀穿插安装于储热模块内的所有储热砖内,储热砖内填充沙子；蓄冷模块通过蓄冷砖搭建堆砌而成,蓄冷砖换热管均匀穿插安装于蓄冷模块内的所有蓄冷砖内,蓄冷砖内填充沙子；分离器、透平、蓄冷砖换热管、介质循环泵、蓄热砖换热管依次相连,蓄热模块和蓄冷模块均位于沙漠表面上。本发明根据沙漠地区昼夜表面温度变化情况,通过储热模块储存沙子白天的热量,通过蓄冷模块储存沙子夜间的冷量,通过产生氨蒸汽吹动透平带动发电机发电,实现了沙漠昼夜温差能的合理利用。(The invention aims to provide an energy storage-based desert day and night temperature difference energy power generation system, which comprises a heat storage module, a cold storage module, a separator, a turbine and a power generator, wherein the heat storage module is built and piled up by heat storage bricks; the cold accumulation module is formed by building and piling cold accumulation bricks, the heat exchange tubes of the cold accumulation bricks are uniformly inserted and arranged in all the cold accumulation bricks in the cold accumulation module, and the sand is filled in the cold accumulation bricks; the separator, the turbine, the cold accumulation brick heat exchange tube, the medium circulating pump and the heat accumulation brick heat exchange tube are sequentially connected, and the heat accumulation module and the cold accumulation module are both positioned on the surface of the desert. According to the invention, according to the day and night surface temperature change conditions of the desert area, the heat quantity of sand in the day is stored through the heat storage module, the cold quantity of sand at night is stored through the cold storage module, and the ammonia steam is generated to blow the turbine to drive the generator to generate electricity, so that the reasonable utilization of day and night temperature difference energy of the desert is realized.)

1. The utility model provides a desert is thermoelectric energy power generation system round clock based on energy storage, characterized by: the heat storage module is formed by building and piling heat storage bricks, the heat storage bricks comprise heat storage materials, heat exchange tubes of the heat storage bricks are uniformly and alternately arranged in all the heat storage bricks in the heat storage module, the heat storage bricks are filled with sand, and the heat exchange tubes of the heat storage bricks are uniformly contacted with the sand; the cold accumulation module is formed by building and piling cold accumulation bricks, the cold accumulation bricks comprise cold accumulation materials, heat exchange tubes of the cold accumulation bricks are uniformly inserted into all the cold accumulation bricks in the cold accumulation module, the cold accumulation bricks are filled with sand, and the heat exchange tubes of the cold accumulation bricks are uniformly contacted with the sand; the separator, the turbine, the cold accumulation brick heat exchange tube, the medium circulating pump and the heat accumulation brick heat exchange tube are sequentially connected, the outlet of the heat accumulation brick heat exchange tube is connected with the separator, the generator is coaxially connected with the turbine, and the heat accumulation module and the cold accumulation module are both located on the surface of the desert.

2. The desert day and night temperature difference energy power generation system based on the energy storage as claimed in claim 1, wherein: the separator is also connected with a heat exchange tube of the cold storage brick through a pipeline.

3. The desert day and night temperature difference energy power generation system based on the energy storage as claimed in claim 2, wherein: the heat storage module collects and stores heat in the heat storage material in the heat storage module in the daytime or under the sunshine condition, simultaneously transfers the heat to the circulating medium through the heat exchange tube to heat and evaporate the medium from a liquid state into a gas-liquid mixed state, and the heat storage material releases the stored energy at night or under the insufficient illumination condition; the cold accumulation module collects cold amount and stores the cold amount in the cold accumulation material inside at night or under the condition that the temperature of sand is lower than 10 ℃, and simultaneously transmits the cold amount to a circulating medium through a heat exchange tube so as to cool and condense the medium into liquid state from a gas-liquid mixed state, and the cold accumulation material releases the cold amount stored when the temperature of sand is lower at night in the daytime or under the sunshine condition.

4. The desert day and night thermoelectric energy power generation system based on energy storage as claimed in claim 3, wherein: the medium is pressurized by a medium circulating pump and enters the heat storage brick heat exchange tube in the heat storage module, the medium absorbs the heat of surface sand through the heat storage brick heat exchange tube in the heat storage module and becomes a mixture of ammonia steam and an ammonia water solution, and then enters the separator, the separator sends the ammonia steam into the turbine, the ammonia steam blows the turbine, the turbine rotates to drive the motor to generate electricity, the ammonia steam after acting and the ammonia water solution coming out of the separator are converged and then enter the cold storage brick heat exchange tube in the cold storage module, the ammonia water solution is condensed into the ammonia water solution by deep low-temperature sand through the cold storage brick heat exchange tube and then flows back to the medium circulating pump to complete kalina cycle electricity generation.

5. The desert day and night thermoelectric energy power generation system based on energy storage as claimed in any one of claims 1-4, wherein: the heat storage material is high temperature resistant magnesium, aluminum or inorganic salt phase change material, and the cold storage material is inorganic salt phase change material.

Technical Field

The invention relates to a power generation system, in particular to a desert power generation system.

Background

The desert area has abundant heat resources to be developed. The specific heat of sand is only 0.92 kJ/(kg. DEG C.) which is far less than that of water, so that the temperature difference between day and night in desert areas is very large due to the temperature rise and the temperature drop of the sand. The desert surface temperature is typically around 50 to 70 ℃ during the day when sunlight is sufficient, and is reduced to around 0 to 10 ℃ during the night. How to reasonably store and use the day and night temperature difference energy of the desert has important significance for the power supply of desert areas and the desert environment protection.

At present, the main utilization mode of heat in desert areas is to use solar energy to carry out thermoelectric conversion power generation, and the mode has high cost, cannot generate power all the time under the influence of weather and sunshine and has large and unstable fluctuation.

Disclosure of Invention

The invention aims to provide an energy-storage-based desert day and night temperature difference energy power generation system for realizing desert day and night temperature difference energy recovery.

The purpose of the invention is realized as follows:

the invention relates to a desert day and night temperature difference energy power generation system based on energy storage, which is characterized in that: the heat storage module is formed by building and piling heat storage bricks, the heat storage bricks comprise heat storage materials, heat exchange tubes of the heat storage bricks are uniformly and alternately arranged in all the heat storage bricks in the heat storage module, the heat storage bricks are filled with sand, and the heat exchange tubes of the heat storage bricks are uniformly contacted with the sand; the cold accumulation module is formed by building and piling cold accumulation bricks, the cold accumulation bricks comprise cold accumulation materials, heat exchange tubes of the cold accumulation bricks are uniformly inserted into all the cold accumulation bricks in the cold accumulation module, the cold accumulation bricks are filled with sand, and the heat exchange tubes of the cold accumulation bricks are uniformly contacted with the sand; the separator, the turbine, the cold accumulation brick heat exchange tube, the medium circulating pump and the heat accumulation brick heat exchange tube are sequentially connected, the outlet of the heat accumulation brick heat exchange tube is connected with the separator, the generator is coaxially connected with the turbine, and the heat accumulation module and the cold accumulation module are both located on the surface of the desert.

The present invention may further comprise:

1. the separator is also connected with a heat exchange tube of the cold storage brick through a pipeline.

2. The heat storage module collects and stores heat in the heat storage material in the heat storage module in the daytime or under the sunshine condition, simultaneously transfers the heat to the circulating medium through the heat exchange tube to heat and evaporate the medium from a liquid state into a gas-liquid mixed state, and the heat storage material releases the stored energy at night or under the insufficient illumination condition; the cold accumulation module collects cold amount and stores the cold amount in the cold accumulation material inside at night or under the condition that the temperature of sand is lower than 10 ℃, and simultaneously transmits the cold amount to a circulating medium through a heat exchange tube so as to cool and condense the medium into liquid state from a gas-liquid mixed state, and the cold accumulation material releases the cold amount stored when the temperature of sand is lower at night in the daytime or under the sunshine condition.

3. The medium is pressurized by a medium circulating pump and enters the heat storage brick heat exchange tube in the heat storage module, the medium absorbs the heat of surface sand through the heat storage brick heat exchange tube in the heat storage module and becomes a mixture of ammonia steam and an ammonia water solution, and then enters the separator, the separator sends the ammonia steam into the turbine, the ammonia steam blows the turbine, the turbine rotates to drive the motor to generate electricity, the ammonia steam after acting and the ammonia water solution coming out of the separator are converged and then enter the cold storage brick heat exchange tube in the cold storage module, the ammonia water solution is condensed into the ammonia water solution by deep low-temperature sand through the cold storage brick heat exchange tube and then flows back to the medium circulating pump to complete kalina cycle electricity generation.

4. The heat storage material is high temperature resistant magnesium, aluminum or inorganic salt phase change material, and the cold storage material is inorganic salt phase change material.

The invention has the advantages that: the invention aims at the day and night temperature difference energy of the desert, combines the kalina cycle power generation technology with the heat storage and cold storage technology, and can reasonably realize the high-efficiency reasonable utilization of the desert heat according to the day and night surface temperature change condition of the desert area, thereby improving the running time of the unit and reducing the power consumption cost of the desert area.

According to the desert day and night temperature difference energy power generation system, the kalina cycle power generation system taking ammonia water as a medium is provided with the heat storage module, the cold storage module, the medium circulation pipeline and the power generation equipment, the heat of sand in the day is stored through the heat storage module, the cold of sand at night is stored through the cold storage module, and the ammonia steam is generated to blow the turbine to drive the generator to generate power, so that the reasonable utilization of the desert day and night temperature difference energy is realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the interior of the heat storage brick.

Detailed Description

The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:

referring to fig. 1-2, the present embodiment is a power generation system using desert day and night temperature difference energy, and the system includes a heat storage module a, a cold storage module B, a medium circulation pipeline, and a power generation device.

The desert temperature difference energy power generation system is composed of a heat storage brick 1, a separator 2, a turbine 3, a generator 4, a cold storage brick 5, a cold storage brick heat exchange pipe 6, a medium circulating pump 8 and a heat storage brick heat exchange pipe 9.

The heat storage module A is arranged on the surface of sand 7 and is formed by building and piling heat storage bricks 1, each heat storage brick 1 is formed by a heat storage material 10, sand 7 and a heat storage brick heat exchange tube 9, and the heat storage material 10 is a high-temperature-resistant magnesium, aluminum or inorganic salt phase-change material. The heat storage module A is arranged on the surface layer of the desert, under the condition that sunlight exists in the daytime, the heat storage module A collects and stores heat in the heat storage material 10 inside, meanwhile, the heat is transferred to a circulating medium through a heat exchange tube, the medium is heated and evaporated from a liquid state into a gas-liquid mixed state, and the heat storage material 10 releases energy stored in the daytime to continuously provide heat for the unit under the condition that the sunlight conditions such as night and the like are insufficient.

The heat storage brick heat exchange tubes 9 are uniformly inserted into all the heat storage bricks 1 in the heat storage module A and are uniformly contacted with the sand 7 in the heat storage bricks 1.

The cold accumulation module B is arranged on the surface of the desert 7 and is formed by building and piling cold accumulation bricks 5, the building mode of the internal structure of the cold accumulation bricks 5 is the same as that of the heat accumulation bricks 1 in the figure 2, and cold accumulation materials used in the cold accumulation bricks 5 are inorganic salt phase-change materials.

The cold accumulation brick heat exchange tubes 6 are uniformly inserted into all the cold accumulation rotors 5 in the cold accumulation module B and are uniformly contacted with sand in the cold accumulation bricks 5. The cold storage bricks 5 absorb and store the cold of the sand at the lower temperature at night and transmit the cold to the circulating medium. The cold accumulation module B is installed on the surface layer of the desert, under the condition that the temperature of sand such as night is lower than 10 ℃, the cold accumulation module B collects and stores cold amount in the cold accumulation material inside, and simultaneously transmits the cold amount to a circulating medium through a heat exchange tube to cool and condense the medium into a liquid state from a gas-liquid mixed state, and the cold accumulation material releases the cold amount stored when the temperature of sand is lower at night under the condition that the temperature of sand is sufficient in sunlight, so that the cold accumulation module B continues to provide the cold amount for the unit.

The separator 2, the turbine 3, the cold accumulation brick heat exchange tube 6, the medium circulating pump 8 and the heat accumulation brick heat exchange tube 9 are sequentially connected in series through metal pipelines.

The generator 4 is coaxially connected to the turbine 3.

The circulating medium of the desert day and night temperature difference power generation system is ammonia water.

Ammonia water is pressurized by a medium circulating pump 8 to enter a heat storage brick heat exchange tube 9 in the heat storage module A, a medium absorbs heat of high-temperature sand in the heat storage module A and is changed into a mixture of ammonia steam and an ammonia water solution, then the mixture enters a separator 2, the separator 2 sends the ammonia steam into a turbine 3, the ammonia steam blows the turbine 3, and the turbine 3 rotates to drive a motor 4 to generate electricity. Ammonia vapor after the power generation is done work and the ammonia water solution that comes out from separator 2 collect the back and get into cold-storage brick heat exchange tube 6 in the cold-storage module B, flow back to medium circulating pump 8 and accomplish kalina circulation after being condensed for the ammonia water solution by low temperature sand through cold-storage brick heat exchange tube 6, realize utilizing the stable power supply of desert temperature difference day and night.