CN215337148U - Tower type fused salt photo-thermal power station with fused salt potential energy recovery function - Google Patents
Tower type fused salt photo-thermal power station with fused salt potential energy recovery function Download PDFInfo
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- CN215337148U CN215337148U CN202121398991.5U CN202121398991U CN215337148U CN 215337148 U CN215337148 U CN 215337148U CN 202121398991 U CN202121398991 U CN 202121398991U CN 215337148 U CN215337148 U CN 215337148U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The utility model discloses a tower type fused salt photo-thermal power station with a fused salt potential energy recovery function, which mainly comprises a heat absorption tower, and a cold salt tank and a hot salt tank which are arranged in a matched manner, wherein the top of the heat absorption tower is provided with a light-gathering heat-collecting system, and the side wall of the heat absorption tower is provided with a fused salt ascending pipe and a fused salt descending pipe which are used for conveying fused salt; the molten salt in the cold salt tank rises to the top of the heat absorption tower through a cold salt pump and a molten salt ascending pipe which are arranged in a matched manner, is heated by a light-gathering and heat-collecting system, and then falls into the hot salt tank through a molten salt descending pipe; be provided with mechanical energy conversion equipment on the connecting tube between fused salt downcomer and the hot salt jar, this mechanical energy conversion equipment is the fused salt turbine, the fused salt turbine sets up on the tower bottom position of heat absorption tower, and the supporting generator that is provided with on the fused salt turbine, fused salt turbine are used for turning into the kinetic energy of fused salt the rotatory mechanical energy of fused salt turbine inner impeller to drive the generator electricity generation, the fused salt is discharged into the hot salt jar after the fused salt turbine does work.
Description
Technical Field
The utility model relates to the technical field of tower type fused salt photo-thermal power generation, in particular to a tower type fused salt photo-thermal power station with a fused salt potential energy recovery function.
Background
Under the background of carbon peak reaching and carbon neutralization, China clearly puts forward the aims that the consumption proportion of non-fossil energy accounts for 25 percent of primary energy in 2030 years, and a wind-light power generation installation machine reaches more than 12 hundred million kilowatts. Along with the acceleration of energy transformation pace in China, the installed capacities of wind power and photovoltaic power are rapidly increased, and the demand of a power system on energy storage capacity and a non-fossil flexible power supply is increasingly urgent. The photo-thermal power generation is a solar power generation mode integrating power generation and energy storage, has good reliability and regulation characteristics, can provide rotational inertia for a system, and is one of the technical means which are difficult to maintain the safe and stable operation of a high-proportion new energy power system.
The tower type fused salt photo-thermal power generation utilizes a large-scale array parabolic or dish-shaped mirror surface to collect solar heat energy, heats fused salt, provides steam through a heat exchange device, and combines the process of a traditional turbonator, thereby achieving the purpose of power generation. The solar energy utilization in the form has an incomparable advantage compared with other forms of solar energy conversion, namely, the high-temperature molten salt is stored in a large scale, and the turbine can still be driven to generate electricity for several hours after the sun falls into the mountain. The method has the greatest advantages that the power output is stable, and the method can be used as basic power and peak shaving.
The tower fused salt light and heat power station needs to match with a high heat absorption tower due to a huge mirror field, the height of the heat absorption tower generally reaches about 200m, fused salt is conveyed to the fused salt heat absorber on the top of the heat absorption tower by a fused salt pump to absorb heat, the fused salt heat absorber also has huge potential energy, the potential energy is converted into kinetic energy in the process of flowing to a hot salt tank, and the mechanical energy is absorbed and dissipated through an elbow, a pore plate, a regulating valve and other devices generally to prevent the hot salt tank from being impacted. On the one hand, energy waste is caused, and on the other hand, the devices such as the pore plate and the regulating valve are arranged, so that the problems of unstable molten salt flowing, frequent action of the regulating valve, increased equipment overhaul frequency and the like can be caused. Therefore, there is a need to develop a method for recovering the potential energy of molten salt more economically and safely, and simultaneously, the method plays a role in controlling the flow, improves the system operation stability, and finally improves the generating efficiency of the photo-thermal power station.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a tower type fused salt photo-thermal power station with a fused salt potential energy recovery function, which can enable the fused salt to flow more stably in a descending pipeline and effectively improve the energy utilization rate, aiming at the defects in the prior art.
The tower type fused salt photo-thermal power station with the fused salt potential energy recovery function mainly comprises a heat absorption tower, and a cold salt tank and a hot salt tank which are arranged in a matched manner, wherein the top of the heat absorption tower is provided with a light-gathering and heat-collecting system, and the side wall of the heat absorption tower is provided with a fused salt ascending pipe and a fused salt descending pipe which are used for conveying fused salt; the molten salt in the cold salt tank rises to the top of the heat absorption tower through a cold salt pump and a molten salt ascending pipe which are arranged in a matched manner, is heated by a light-gathering and heat-collecting system, and then falls into the hot salt tank through a molten salt descending pipe; and a mechanical energy conversion device for converting kinetic energy of the molten salt into mechanical energy so as to avoid impact of the molten salt on the hot salt tank is arranged on a connecting pipeline between the molten salt descending pipe and the hot salt tank.
Further, the mechanical energy conversion equipment is a molten salt turbine, the molten salt turbine is arranged at the bottom of the heat absorption tower, a generator is arranged on the molten salt turbine in a matched mode, the molten salt turbine is used for converting kinetic energy of molten salt into mechanical energy of rotation of an impeller in the molten salt turbine, so that the generator is driven to generate electricity, and the molten salt is discharged into the hot salt tank after acting through the molten salt turbine.
Further, a speed regulating device used for improving the rotating speed of the generator to improve the energy recovery rate is arranged between the molten salt turbine and the generator.
The utility model has the beneficial technical effects that: according to the utility model, the fused salt mechanical energy is converted into the impeller rotating mechanical energy through the fused salt turbine so as to drive the generator to generate electricity, recover the potential energy of the fused salt, reduce the impact of the fused salt on the downstream, increase the flowing stability of the fused salt, control the amount of the recovered energy of the fused salt turbine so as to control the flow of the fused salt, replace the action of the regulating valve to a certain extent, reduce the action of the regulating valve, and enable the system to operate more stably and reliably.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in figure 1, the tower type fused salt photo-thermal power station with the fused salt potential energy recovery function mainly comprises a heat absorption tower 1, and a cold salt tank 2 and a hot salt tank 3 which are arranged in a matched mode, wherein a light-gathering and heat-collecting system 4 is arranged at the top of the heat absorption tower 1, and the light-gathering and heat-collecting system 4 is located at the top of the heat absorption tower 1 so as to collect solar energy reflected by a mirror field. A fused salt ascending pipe 5 and a fused salt descending pipe 6 for conveying fused salt are arranged on the side wall of the heat absorption tower 1; the molten salt in the cold salt tank 2 rises to the top of the heat absorption tower 1 through a cold salt pump 7 and a molten salt ascending pipe 5 which are arranged in a matching way, is heated by a light condensation and heat collection system 4, and then falls into the hot salt tank 3 through a molten salt descending pipe 6; molten salt in the heat absorption tower 1 has huge gravitational potential energy, and flows to the hot salt tank 3 for storage through the molten salt downcomer 6 after heat absorption, and in order to prevent the molten salt from impacting the hot salt tank 3 and control the flow speed of the molten salt, mechanical energy conversion equipment for converting the kinetic energy of the molten salt into mechanical energy so as to avoid the impact of the molten salt on the hot salt tank is arranged on a connecting pipeline between the molten salt downcomer 6 and the hot salt tank 3.
Referring to fig. 1, the mechanical energy conversion equipment is a molten salt turbine 8, the molten salt turbine 8 is arranged at the bottom of the heat absorption tower 1, a generator 9 is arranged on the molten salt turbine 8 in a matching manner, the molten salt turbine 8 is used for converting kinetic energy of molten salt into mechanical energy of impeller rotation in the molten salt turbine, so that the generator 9 is driven to generate electricity, conversion from the molten salt mechanical energy to electric energy is realized, and after the molten salt is discharged through the molten salt turbine 8, the kinetic energy of the molten salt is reduced and stably flows to the hot salt tank 3 for storage. The flow of the molten salt can be controlled by controlling the energy recovery of the molten salt turbine 8, the function of the regulating valve is replaced to a certain extent, and the action of the regulating valve is reduced. Meanwhile, because the flow speed of the molten salt is relatively low in a balanced manner, a speed regulating device can be arranged between the molten salt turbine 8 and the generator 9 so as to improve the rotating speed of the generator and improve the energy recovery efficiency.
According to the utility model, the fused salt mechanical energy is converted into the impeller rotating mechanical energy through the fused salt turbine so as to drive the generator to generate electricity, recover the potential energy of the fused salt, reduce the impact of the fused salt on the downstream, increase the flowing stability of the fused salt, control the amount of the recovered energy of the fused salt turbine so as to control the flow of the fused salt, replace the action of the regulating valve to a certain extent, reduce the action of the regulating valve, and enable the system to operate more stably and reliably. The utility model can be widely applied to a tower type photo-thermal power station, and can recover the energy of the molten salt, improve the flow stability of the molten salt and finally improve the generating efficiency of the photo-thermal power station.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (3)
1. The utility model provides a tower fused salt light and heat power station with fused salt potential energy retrieves function which characterized in that: the solar energy heat collector mainly comprises a heat absorption tower, and a cold salt tank and a hot salt tank which are arranged in a matched manner, wherein the top of the heat absorption tower is provided with a light gathering and heat collecting system, and the side wall of the heat absorption tower is provided with a molten salt ascending pipe and a molten salt descending pipe which are used for conveying molten salt; the molten salt in the cold salt tank rises to the top of the heat absorption tower through a cold salt pump and a molten salt ascending pipe which are arranged in a matched manner, is heated by a light-gathering and heat-collecting system, and then falls into the hot salt tank through a molten salt descending pipe; and a mechanical energy conversion device for converting kinetic energy of the molten salt into mechanical energy so as to avoid impact of the molten salt on the hot salt tank is arranged on a connecting pipeline between the molten salt descending pipe and the hot salt tank.
2. The tower type molten salt solar-thermal power station with the molten salt potential energy recovery function of claim 1 is characterized in that: the mechanical energy conversion equipment is a molten salt turbine, the molten salt turbine is arranged at the bottom of the heat absorption tower, a generator is arranged on the molten salt turbine in a matched mode, the molten salt turbine is used for converting kinetic energy of molten salt into mechanical energy of rotation of an impeller in the molten salt turbine, therefore, the generator is driven to generate electricity, and the molten salt is discharged into the hot salt tank after the molten salt turbine does work.
3. The tower type molten salt solar-thermal power station with the molten salt potential energy recovery function according to claim 2, characterized in that: and a speed regulating device for improving the rotating speed of the generator so as to improve the energy recovery rate is arranged between the molten salt turbine and the generator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398991.5U CN215337148U (en) | 2021-06-23 | 2021-06-23 | Tower type fused salt photo-thermal power station with fused salt potential energy recovery function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121398991.5U CN215337148U (en) | 2021-06-23 | 2021-06-23 | Tower type fused salt photo-thermal power station with fused salt potential energy recovery function |
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| CN215337148U true CN215337148U (en) | 2021-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791961A (en) * | 2024-02-26 | 2024-03-29 | 浙江西子联合工程有限公司 | Energy storage device kinetic energy recovery device, steam turbine power generation system and heating system |
| CN117791961B (en) * | 2024-02-26 | 2024-05-17 | 浙江西子联合工程有限公司 | Energy storage device kinetic energy recovery device, steam turbine power generation system and heating system |
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2021
- 2021-06-23 CN CN202121398991.5U patent/CN215337148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791961A (en) * | 2024-02-26 | 2024-03-29 | 浙江西子联合工程有限公司 | Energy storage device kinetic energy recovery device, steam turbine power generation system and heating system |
| CN117791961B (en) * | 2024-02-26 | 2024-05-17 | 浙江西子联合工程有限公司 | Energy storage device kinetic energy recovery device, steam turbine power generation system and heating system |
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