CN201650630U

CN201650630U - A device that uses solar and geothermal power to generate electricity

Info

Publication number: CN201650630U
Application number: CN2010201262598U
Authority: CN
Inventors: 章学来; 施敏敏; 于树轩; 于美; 林原培
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2010-03-09
Filing date: 2010-03-09
Publication date: 2010-11-24
Anticipated expiration: 2020-03-09

Abstract

The utility model discloses a device for generating electricity using solar energy and geothermal heat, which includes a focused solar heat collector, a heat accumulator, a steam turbine, a generator, a condenser, and an underground water well, and the focused solar heat collector, a steam turbine, and a condenser pass through The working fluid pump and the third valve form a closed loop; the condensed water inlet and outlet of the condenser are connected to the groundwater well through the suction pipe and the drain pipe, and a cold water pump is installed on the suction pipe; the heat accumulator passes through the first valve and the second The valve is connected in parallel with the concentrated solar heat collector; the power input shaft of the generator is connected with the power output shaft of the steam turbine. The utility model uses a focused solar heat collector and a heat accumulator, uses solar energy to heat the working fluid, increases the temperature of the working medium, and thereby improves the power generation efficiency. The heat accumulator stores solar energy during the day, and when there is no sunlight at night, it releases heat to continue heating the working medium, so as to realize all-weather power generation and improve the utilization efficiency of the system.

Description

A kind of device that utilizes solar energy and geothermal power generation

Technical field

The utility model relates to a kind of solar energy that utilizes as thermal source, and underground water is as the electricity generating device of low-temperature receiver.

Background technique

Solar energy and underground water are as pollution-free, and the energy that cost is low more and more is subject to people's attention.But at present solar energy and phreatic utilization are only limited to be used to produce hot water and regulate air, seldom have both are combined use, in particular for generating.

The model utility content

Technical problem to be solved in the utility model be that providing a kind of at the deficiencies in the prior art organically combines solar energy and underground heat, can also play the electricity generating device of the effect of energy-conserving and environment-protective in efficient power generation.

In order to realize the foregoing invention purpose, the technological scheme that the utility model adopted is:

A kind of device that utilizes solar energy and geothermal power generation, comprise solar concentrating collector, thermal accumulator, steam turbine, generator, condenser, underground water well, described solar concentrating collector, steam turbine, condenser form the closed loop by working fluid pump, the 3rd valve; The condensation water inlet/outlet of condenser inserts underground water well by drinking-water pipe and waste pipe, and drinking-water pipe is provided with water supply pump; Described thermal accumulator is in parallel with described solar concentrating collector by first valve and second valve; The power input shaft of generator connects with the pto of steam turbine.

The device using method of solar energy and geothermal power generation of utilizing of the present utility model is:

1. on daytime, close first valve and second valve, open the 3rd valve; About 20-30 ℃ liquid refrigerant is sent in the solar concentrating collector by the working fluid pump pressurization; Heating by solar energy makes working medium rise to 70-80 ℃, becomes superheated vapor;

2. the superheated vapor that flows out from solar concentrating collector enters steam turbine, promotes turbine acting output power, and this power can be converted into electric power output or directly output by generator; Be still overheated gas through working medium behind the steam turbine, pressure reduces, and temperature also reduces simultaneously;

3. the gaseous working medium of being discharged by steam turbine enters in the condenser, is drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again;

4. the working medium that flows out from condenser is sent into the solar concentrating collector by the working fluid pump pressurization, thereby finishes cyclic process, realizes the electric power output of system;

5. during night, close the 3rd valve, open first valve and second valve, utilize the heat that stores in the thermal accumulator to come heating working medium, the Working medium gas after heating enters steam turbine, promotes the turbine acting.Gaseous working medium by steam turbine is discharged enters in the condenser, is drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again, finishes a circulation.

The needed electric power of the utility model whole circulation process can be provided by system self fully, and additional power output is arranged, thereby can realize the generating of system.

The utility model adopts solar concentrating collector to absorb solar energy, and the temperature of working fluid is brought up to about 70-80 ℃, and superheated vapor drives steam turbine power generation, thereby improves systemic circulation efficient.System also will increase thermal accumulator on the basis of solar thermal collector.This thermal accumulator adopts heat pipe intensified heat transfer, and with high-efficiency thermal storage material heat accumulation.Daytime is by utilizing solar thermal collector hot machine working medium is heated and carrying out accumulation of heat by phase-change material.When not having thermal source and can utilize night, thermal accumulator is emitted heat, passes to the outer lower working fluid of temperature that passes through of pipe.Can also carry out generating state equally efficiently in night like this.

Description of drawings

Fig. 1 is the principle schematic of the utility model device.

Embodiment

Referring to Fig. 1, the device that utilizes solar energy and geothermal power generation of the present utility model, comprise solar concentrating collector 1, thermal accumulator 7, steam turbine 2, generator 8, condenser 3, underground water well 6, solar concentrating collector 1, steam turbine 2, condenser 3 form the closed loop by working fluid pump 5, the 3rd valve V3 and pipeline 9; The condensation water inlet/

outlet

31,32 of condenser 3 inserts underground water well 6 by drinking-water pipe 61 and waste pipe 62, and drinking-water pipe 61 is provided with water supply pump 4; Thermal accumulator 7 is in parallel with solar concentrating collector 1 by the first valve V1 and the second valve V2; The power input shaft of generator 8 connects with the pto of steam turbine 2.

In the time of by day, close the first valve V1 and the second valve V2, open the 3rd valve V3, solar concentrating collector 1 absorbs solar energy working fluid is heated, thermal accumulator 7 is absorbed and store heat by solar radiation, is heated to about 70-80 ℃ the back superheated vapor and sends into pushing turbines 2 actings in the steam turbine 2 by pipeline 9.Output power, this power can be converted into electric power output or directly output by generator.

Working medium after the acting enters condenser 3, is also finally condensed by about 19-20 ℃ underground water cooling.Liquid working substance after condensing continues circulation again by working fluid pump 5 suction solar concentrating collectors 1.Cold water is drawn into condenser 3 by water supply pump 6 and drinking-water pipe 61, and with the working substance steam condensation after the acting, the cold water after self temperature rises enters underground water well 6 by waste pipe 62 again.By the time night, close the 3rd valve V3, open the first valve V1 and the second valve V2, utilize the heat of 7 li storages of thermal accumulator to come heated working fluid, be heated to about 70-80 ℃ the back superheated vapor and send into pushing turbines 2 actings in the steam turbine 2 by pipeline 9.Output power, this power can be converted into electric power output or directly output by generator, thereby makes system also can continue generating in night.Cycle operation process by above-mentioned electricity generating device constantly is converted into electric energy with heat energy, reaches the purpose of efficiently utilizing solar energy.

The utility model patent has not only effectively improved generating efficiency by to solar energy and phreatic recycling, has also made full use of rich natural resource.The clear energy sources that is adopted can not pollute environment, has wide potential application prospect.

Claims

1. device that utilizes solar energy and geothermal power generation, it is characterized in that, comprise solar concentrating collector, thermal accumulator, steam turbine, generator, condenser, underground water well, described solar concentrating collector, steam turbine, condenser form the closed loop by working fluid pump, the 3rd valve; The condensation water inlet/outlet of condenser inserts underground water well by drinking-water pipe and waste pipe, and drinking-water pipe is provided with water supply pump; Described thermal accumulator is in parallel with described solar concentrating collector by first valve and second valve; The power input shaft of generator connects with the pto of steam turbine.