CN211953294U

CN211953294U - System for tower light and heat spotlight solar collecting system provides heat transfer medium for SGS system

Info

Publication number: CN211953294U
Application number: CN202020669845.0U
Authority: CN
Inventors: 张蕾
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-17
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to a system for tower light and heat spotlight solar collecting system provides heat transfer medium for SGS system, including tower light and heat power station spotlight solar collecting system and SGS system, through set up the main regulating connecting pipe between tower light and heat power station spotlight solar collecting system and SGS system, inferior regulating connecting pipe, the main regulating connecting pipe is linked together with tower pipe and heat transfer medium import pipe down respectively, be provided with a main pressure flow control valve and two regulation stop valves on the main regulating connecting pipe, be provided with inferior pressure flow control valve on the inferior regulating connecting pipe, inferior pressure flow control valve and the parallelly connected setting of main pressure flow control valve. The utility model discloses a simple structure, convenient operation, light and heat power station daytime the operation, the cold pump operation, the heat absorber spotlight heat absorption on the heat absorption tower, for the SGS system provides the hot medium through tower pipe, main adjusting connecting pipe, heat transfer medium import pipe down, the heating feedwater produces steam, does not need the heat pump operation this moment, reduces the power consumption.

Description

System for tower light and heat spotlight solar collecting system provides heat transfer medium for SGS system

Technical Field

The utility model belongs to the technical field of the light and heat power generation, especially, relate to a system that tower light and heat spotlight thermal-arrest system provided heat transfer medium for the SGS system.

Background

The solar radiation energy is converted into electric energy through water or other working media and devices, and the power generation mode is called photo-thermal power generation. Firstly, solar energy is converted into heat energy, and then the heat energy is converted into electric energy, and the solar energy and the electric energy have two conversion modes: one is to directly convert solar heat energy into electric energy, such as thermoelectric power generation of semiconductors or metal materials, thermoelectron and thermion power generation in vacuum devices, alkali metal thermoelectric conversion, magnetohydrodynamic power generation and the like; another way is to use solar thermal energy to drive a generator to generate electricity through a heat engine (e.g., a steam turbine), similar to conventional thermal power generation, except that the thermal energy comes not from fuel, but from solar energy. There are various types of solar thermal power generation, mainly the following five types: tower system, slot system, disk system, solar pond and solar tower hot gas flow electricity generation. The first three are concentrating solar thermal power generation systems, and the second two are non-concentrating.

The tower type photo-thermal power generation technology is characterized in that sunlight is reflected to a heat absorber by a heliostat, the heat absorber converts solar light energy into heat energy of media such as fused salt or heat conduction oil and the like to be stored in a cold storage tank and a hot storage tank, then the heat energy of high-temperature media is heated into high-temperature high-pressure steam by a steam generator system (also called SGS) through a heat exchange system, the high-temperature high-pressure steam enters a steam turbine through a main steam regulating valve, and the steam turbine is driven to work and transmit the high-. As shown in fig. 1, the light-gathering and heat-collecting system of the tower-type photothermal power station comprises a heliostat field, a cold storage tank 1, a heat absorption tower 2, a heat absorber 3, a heat storage tank 4, a steam generator system 5, an upper tower pipe 6, a lower tower pipe 7, a heat exchange medium inlet pipe 8, a heat exchange medium outlet pipe 9, a cold pump 10, a heat pump 11 and regulating valves and stop valves arranged on each connecting pipeline, wherein a low-temperature medium is pumped into the heat absorber 3 by the cold pump 10, the heat reflected by the heliostat field is absorbed by a heat absorption screen, the temperature is gradually increased, the high-temperature medium is changed into the high-temperature medium, and the high-temperature medium flows into the cold storage tank 1 or. The heat pump 11 pumps high-temperature media into the SGS system through the heat exchange medium inlet pipe 8, high-temperature and high-pressure steam is generated through heat exchange, the turbo generator set is driven to rotate to generate electricity, and the low-temperature media after heat exchange enter the cold storage tank 1 through the heat exchange medium outlet pipe 9.

The defects of the prior art are that the concentrating and heat collecting system of the tower type photo-thermal power station and the SGS system belong to two independent systems and are not connected with each other, so that part of energy in the concentrating and heat collecting system is lost, and energy waste is caused.

Disclosure of Invention

The utility model aims at providing a system that tower light and heat spotlight solar collecting system provided heat transfer medium for the SGS system, solve and do not have the contact between current tower light and heat power station spotlight solar collecting system and the SGS system and cause the extravagant problem of energy.

The utility model adopts the technical proposal to solve the problems that the utility model provides a system for providing heat exchange medium for SGS system by a tower type photo-thermal light-gathering heat collecting system, which comprises a cold storage tank, a heat absorption tower, a heat absorber, a heat storage tank, a steam generator system, an upper tower pipe, a lower tower pipe, a heat exchange medium inlet pipe, a heat exchange medium outlet pipe, a cold pump, a heat pump, a dredging tank, and regulating valves and stop valves arranged on each connecting pipeline, and also comprises a main regulating connecting pipe and a secondary regulating connecting pipe, wherein one end of the main regulating connecting pipe is arranged between the regulating valves of the heat absorber and the lower tower pipe, the other end of the main regulating connecting pipe is arranged between the two regulating valves of the heat exchange medium inlet pipe, the main regulating connecting pipe is provided with a main pressure flow regulating valve and two regulating stop valves, and the main pressure flow regulating valve is arranged between the two regulating stop valves, both ends of the secondary regulating connecting, and the secondary regulating connecting pipe is provided with a secondary pressure flow regulating valve, and the secondary pressure flow regulating valve and the main pressure flow regulating valve are arranged in parallel.

Preferably, the regulation capacity of the primary pressure-flow regulation valve is greater than the regulation capacity of the secondary pressure-flow regulation valve.

Preferably, the secondary pressure-flow regulating valve regulating capacity is 2/5 the primary pressure-flow regulating valve regulating capacity.

Preferably, the main adjusting connecting pipe is arranged from the end of the heat absorber to the end of the steam generator system in an inclined and downward manner, and the included angle between the main adjusting connecting pipe and the horizontal direction is alpha which is 5-10 degrees.

Preferably, a drainage pipeline is communicated between the main adjusting connecting pipe and the drainage tank, and the drainage pipeline is provided with a drainage stop valve.

The utility model has the advantages that: the utility model discloses a simple structure, convenient operation, light and heat power station daytime operation, the cold pump operation, the heat absorber spotlight heat absorption on the heat absorption tower utilizes the difference in height pressure of heat absorption tower 200 meters and above, provides the hot medium for the SGS system through tower pipe, main adjusting connecting pipe, heat transfer medium import pipe down, and the heating feedwater produces steam, does not need the heat pump operation this moment, reduces the power consumption rate. The solar-thermal power station generally absorbs heat in daytime and operates for 8-10 hours, the power of a heat pump is generally 200-300 KW, the heat pump can save 2000-3000-degree power consumption every day when the heat pump stops operating in daytime, the power consumption is saved by about 60000-90000 degrees every month according to 30 days in one month, the power consumption is saved by about 720000-1080000 degrees every year according to 365 days in one year, the power consumption is saved by about 1.15 yuan/degree in the current online electricity price stage of the solar-thermal power station, and the power consumption can be saved by about 828000-1242000 yuan in one year.

Drawings

FIG. 1 is a schematic structural diagram of a concentrating and heat collecting system and an SGS system of a tower-type photothermal power station in the prior art;

fig. 2 is the structure schematic diagram of the light-gathering and heat-collecting system and the SGS system of the middle tower type photo-thermal power station of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in FIG. 2, the utility model provides a system for providing heat exchange medium for SGS system, which comprises a cold storage tank 1, a heat absorption tower 2, a heat absorber 3, a heat storage tank 4, a steam generator system 5, an upper tower pipe 6, a lower tower pipe 7, a heat exchange medium inlet pipe 8, a heat exchange medium outlet pipe 9, a cold pump 10, a heat pump 11, and regulating valves and stop valves arranged on each connecting pipeline, and further comprises a drainage tank 12, a main regulating connecting pipe 13 and a secondary regulating connecting pipe 18, wherein one end of the main regulating connecting pipe 13 is arranged between the regulating valves of the heat absorber 3 and the lower tower pipe 7, the other end of the main regulating connecting pipe 13 is arranged between two regulating valves of the heat exchange medium inlet pipe 8, a drainage pipeline 14 is communicated between the main regulating connecting pipe 13 and the drainage tank 12, the drainage pipeline 14 is provided with a drainage stop valve 15, the main regulating connecting pipe 13 is provided with a main pressure flow regulating valve 16 and two regulating stop valves 17, and the main pressure flow regulating valve 16 is positioned between the two regulating stop valves 17, two ends of the secondary regulating connecting pipe 18 are communicated with the main regulating connecting pipe 13, the secondary pressure flow regulating valve 19 is arranged on the secondary regulating connecting pipe 18, and the secondary pressure flow regulating valve 19 is connected with the main pressure flow regulating valve 16 in parallel.

In general, the control capacity of the primary pressure flow control valve 16 is greater than the control capacity of the secondary pressure flow control valve 19, and the control capacity of the secondary pressure flow control valve 19 is 2/5 of the control capacity of the primary pressure flow control valve 16, for example, the thermal load of the primary pressure flow control valve 16 is 100% and the thermal load of the secondary pressure flow control valve 19 is 40%.

The main adjusting connecting pipe 13 is arranged from the end of the heat absorber 3 to the end of the steam generator system 5 in an inclined and downward manner, the included angle between the main adjusting connecting pipe 13 and the horizontal direction is alpha, the alpha is 5-10 degrees, the alpha is 8 degrees in the embodiment, and the heat medium can conveniently flow to the SGS system 5 due to the inclined arrangement of the main adjusting connecting pipe 13.

When the photothermal power station operates in the daytime, the cold pump 10 operates, the heat absorber 3 on the heat absorption tower 2 condenses light and absorbs heat, the height difference pressure of the heat absorption tower 2 of two hundred meters and above is utilized, a heat medium is provided for the SGS system 5 through the lower tower pipe 7, the main adjusting connecting pipe 13 and the heat exchange medium inlet pipe 8, steam is generated by heating water supply, the operation of the heat pump 11 is not needed at the moment, and the power consumption rate is reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

Claims

1. The utility model provides a system for tower light and heat spotlight solar collecting system provides heat transfer medium for SGS system, includes cold storage tank (1), heat absorption tower (2), heat absorber (3), hot storage tank (4), steam generator system (5), go up tower pipe (6), lower tower pipe (7), heat transfer medium import pipe (8), heat transfer medium outlet pipe (9), cold pump (10), heat pump (11), dredge the governing valve and the stop valve component that set up on jar (12) and each connecting tube, its characterized in that: still include main regulation connecting pipe (13), inferior regulation connecting pipe (18), wherein the one end setting of main regulation connecting pipe (13) is between the governing valve of heat absorber (3) and lower tower pipe (7), the other end setting of main regulation connecting pipe (13) is between two governing valves of heat transfer medium import pipe (8), be provided with one main pressure flow control valve (16) and two regulation stop valves (17) on main regulation connecting pipe (13), and main pressure flow control valve (16) are located between two regulation stop valves (17), the both ends of inferior regulation connecting pipe (18) all are linked together with main regulation connecting pipe (13), be provided with inferior pressure flow control valve (19) on inferior regulation connecting pipe (18), inferior pressure flow control valve (19) and main pressure flow control valve (16) parallel arrangement.

2. The system for providing the heat exchange medium for the SGS system by using the tower type photo-thermal concentrating and heat collecting system according to claim 1, wherein the system comprises: the adjusting capacity of the main pressure flow adjusting valve (16) is larger than that of the secondary pressure flow adjusting valve (19).

3. The system for providing the heat exchange medium for the SGS system by using the tower type photothermal concentrating heat collection system according to claim 1 or 2, wherein the system comprises: the adjusting capacity of the secondary pressure flow adjusting valve (19) is 2/5 of the adjusting capacity of the main pressure flow adjusting valve (16).

4. The system for providing the heat exchange medium for the SGS system by using the tower type photo-thermal concentrating and heat collecting system according to claim 1, wherein the system comprises: the main adjusting connecting pipe (13) is obliquely and downwards arranged from the end of the heat absorber (3) to the end of the steam generator system (5), and the included angle between the main adjusting connecting pipe (13) and the horizontal direction is alpha which is 5-10 degrees.

5. The system for providing the heat exchange medium for the SGS system by using the tower type photo-thermal concentrating and heat collecting system according to claim 1, wherein the system comprises: a drainage pipeline (14) is communicated between the main adjusting connecting pipe (13) and the drainage tank (12), and a drainage stop valve (15) is arranged on the drainage pipeline (14).