阅读说明：本技术 一种利用沙漠温差能发电系统 (Power generation system utilizing desert temperature difference energy ) 是由 王佳典 王璞尧 陈龙 韩卿洋 吴哲 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利用沙漠温差能发电系统,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,储热砖包括储热材料,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,储热砖换热管与沙子均匀接触；蓄冷模块与储热模块结构类似；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,蓄热砖换热管的出口连接分离器,发电机与透平同轴相连。本发明根据沙漠地区热量资源变化情况,可合理实现沙漠热量的高效合理利用,通过储热模块吸收并储存表层沙子热量,通过蓄冷模块储存深层沙漠的冷量,通过介质吹动透平带动发电机发电,实现了沙漠温差能的合理利用。(The invention aims to provide a power generation system utilizing desert temperature difference energy, which comprises a heat storage module, a cold storage module, a separator, a turbine and a generator, wherein the heat storage module is built and piled up through heat storage bricks, the heat storage bricks comprise heat storage materials, heat exchange tubes of the heat storage bricks are uniformly inserted into 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 similar to the heat accumulation module in structure; 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, and the generator is coaxially connected with the turbine. According to the desert area heat source change situation, the desert heat can be reasonably and efficiently utilized, the surface sand heat is absorbed and stored through the heat storage module, the cold energy of the deep desert is stored through the cold storage module, the generator is driven to generate electricity through the medium blowing turbine, and the desert temperature difference energy is reasonably utilized.)

1. A power generation system utilizing desert temperature difference energy 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, and the generator is coaxially connected with the turbine; the heat storage module is positioned above the desert, and the cold storage module is positioned below 5 meters in the underground depth of the surface of the desert.

2. The power generation system using desert thermal energy 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 power generation system using desert thermal energy as claimed in claim 2, 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.

4. The power generation system using desert thermal energy as set forth in any one of claims 1 to 3, 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 sunshine is sufficient and long in desert, gobi and other areas, the heat resources on the surface of the desert are very abundant, and the temperature on the surface of the desert is generally about 50 to 70 ℃ during the sunshine in the day. At present, the main mode of utilizing the solar energy in the desert area is to lay a large number of solar photovoltaic panels in the desert area to convert the solar energy in the desert area into electric energy, but because the power generation of the solar photovoltaic panels is influenced by the weather and the sunshine duration and the manufacturing cost is high, the reasonable planning and use of the solar energy in the desert are still difficult at present.

The temperature of the desert underground with the depth of 5 meters is about 10 ℃, and the underground temperature at night can even be reduced to below 0 ℃, so that the power generation by utilizing the temperature difference between the surface of the desert and the sand in the underground deep layer is an effective means for generating power by utilizing desert energy.

Disclosure of Invention

The invention aims to provide a power generation system utilizing desert temperature difference energy, which takes surface sand as a heat source and deep sand as a cold source so as to fully recycle the desert temperature difference energy.

The purpose of the invention is realized as follows:

a power generation system utilizing desert temperature difference energy 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, and the generator is coaxially connected with the turbine; the heat storage module is positioned above the desert, and the cold storage module is positioned below 5 meters in the underground depth of 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 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.

3. 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 combines the kalina cycle power generation technology and the heat storage and cold storage technology aiming at the utilization of the temperature difference between the surface layer and the deep layer of the desert, can reasonably realize the high-efficiency reasonable utilization of the desert heat according to the change condition of the heat resource of the desert area, prolongs the effective operation time of the unit and reduces the power consumption cost of the desert area.

According to the desert thermoelectric 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 cycle pipeline and the power generation equipment, the heat of sand on the surface layer is absorbed and stored through the heat storage module, the cold of the deep desert is stored through the cold storage module, the medium blows the turbine to drive the power generator to generate power, and the reasonable utilization of the desert thermoelectric 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 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 6, a cold storage brick heat exchange pipe 7, a medium circulating pump 9 and a heat storage brick heat exchange pipe 9.

The heat storage module A is arranged on the surface of sand 5, the heat storage module A is formed by building and piling heat storage bricks 1, each heat storage brick 1 is formed by a heat storage material 10, sand 5 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 brick 1 absorbs and stores heat of sand on the surface of the desert and transfers the heat to a circulating medium.

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 5 in the heat storage bricks 1. The heat storage module A is arranged on the surface layer of the desert, under the condition of sufficient sunshine, the heat storage module A transfers heat to a circulating medium through the heat storage brick heat exchange tube 9, the medium is heated and evaporated from a liquid state to a gas-liquid mixed state, and meanwhile, a part of heat is stored and is used for continuously providing heat for the unit under the condition of insufficient sunshine.

The cold accumulation module B is arranged at the underground position 5 meters deep on the surface of the desert 5, the cold accumulation module B is formed by building and piling cold accumulation bricks 6, the building mode of the internal structure of the cold accumulation bricks 6 is the same as that of the heat accumulation bricks 1, and cold accumulation materials used in the cold accumulation bricks 6 are inorganic salt phase-change materials. The cold storage bricks 6 absorb and store the cold of the sand in the deep desert and transmit the cold to the circulating medium. The cold accumulation module B transmits cold energy to a circulating medium through the cold accumulation brick heat exchange tube 7 under the daily insufficient condition, the medium is cooled and condensed into a liquid state from a gas-liquid mixed state, and meanwhile, part of cold energy is stored and is used for continuously providing cold energy for the unit under the condition that the sunshine in the desert is sufficient and the temperature of deep sand is higher.

The cold storage brick heat exchange tubes 7 are uniformly inserted into all the cold storage rotors 6 in the cold storage module B and are uniformly contacted with sand in the cold storage bricks 6.

The separator 2, the turbine 3, the cold accumulation brick heat exchange tube 7, the medium circulating pump 8 and the heat accumulation brick heat exchange tube 9 are sequentially connected in series through metal pipelines;

the power generation equipment comprises a generator 4 and a turbine 3, wherein the generator 4 is coaxially connected with the turbine 3;

the circulating medium of the desert thermoelectric power generation system is ammonia water.

The power generation method of the desert temperature difference energy power generation system in the embodiment comprises the following steps: 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 surface sand through the heat storage brick heat exchange tube 9 in the heat storage module A to become 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. The acted ammonia vapor and the ammonia water solution coming out of the separator 2 are collected and then enter the cold accumulation brick heat exchange tube 7 in the cold accumulation module 6, and the ammonia water solution is condensed into the ammonia water solution by deep low-temperature sand through the cold accumulation brick heat exchange tube 7 and then flows back to the working medium pump 8 to complete kalina cycle power generation, so that stable power supply of desert temperature difference is realized.