CN201096060Y - Solar energy generator set - Google Patents

Abstract

The utility model relates to a solar heat generating set which comprises a boiler drum, a water circulation pipeline which is connected to the boiler drum, a steam-water circulation pipeline which is connected to the boiler drum, an extraction pump, a steam turbine, a generator, a condenser and a water replenishing pump, and the steam-water circulation pipeline is composed of a hot steam pipe and a return pipe. The utility model is characterized in that solar heating plants are arranged on the water circulation pipeline and the steam-water circulation pipeline, and the solar heat generating set has the advantage that the heat-exchange equipment of the boiler drum is converted to the solar heating equipment, thereby causing the utility model to have practicality, and being beneficial to the large-scale application of solar electrical energy generation. Besides, because the reheating is adopted in the system, the use efficiency of the solar energy is improved, and the solar heat generating set has the advantages of the easy maintenance, high thermal efficiency, no fossil fuel consumption and no environmental pollution.

Description

Solar Thermal Generator Set

Technical field:

The utility model relates to a solar thermal generating set.

Background technique:

As a clean and inexhaustible source of energy, solar energy will take an increasing proportion in the energy structure. Solar thermal power generation can not only generate electricity, but also realize heating and cooling at the same time, forming a cogeneration of heat, electricity and cooling. The solar thermal power generation system is composed of heat collection system, heat transfer system, heat storage energy storage system, heat engine, generator and so on. After the heat collection system collects solar energy, the heat energy collected by the heat transfer system is transferred to the heat engine, which generates power and drives the generator to generate electricity. The heat source of the entire system comes from solar energy, so it is called a solar thermal power generation system. At present, my country's power generation method is still dominated by thermal power generation, supplemented by nuclear power, hydraulic power, wind power, and solar power. With the progress of society, nuclear power, hydropower, wind power and solar power generation will gradually replace thermal power generation, especially wind power, solar power and other renewable clean energy power generation will be the mainstream of future energy. Thermal power generation is based on the combustion of fossil fuels to generate heat to heat the water in the boiler to generate steam, which drives the steam turbine to generate power. A boiler is a mechanical device that uses heat from fuel or other energy sources to heat water into hot water or steam. A boiler consists of two parts: a pot and a furnace. The original meaning of a pot refers to a water container heated on a fire, and the furnace refers to a place where fuel is burned. Most of my country's generating units are thermal power units, using coal-fired boilers. After years of operation, safety, reliability and power generation efficiency have gradually improved. However, this unit consumes renewable energy, and the exhaust gas will pollute the environment. The boiler used in thermal power generation is a steam drum boiler. The boiler mainly includes a steam drum, a steam-water circulation pipeline, a booster pump on the circulation pipeline and heat exchange equipment. The heat exchange equipment includes: water wall, superheater, Reheater, economizer, etc. Solar thermal power generation is an important technical approach for large-scale development and utilization of solar energy. As the key technology needs a major breakthrough, the current foreign tower, trough and dish systems are still facing the problems of large investment, high cost and low efficiency.

Invention content:

The purpose of this utility model is to provide a kind of solar thermal generating set that combines thermal power generation system and solar energy organically. Coal device) is transformed into solar heating equipment, which skillfully solves the technical problems in solar thermal power generation, and has the characteristics of easy maintenance, high thermal efficiency, no consumption of fossil fuels, and no pollution to the environment.

The purpose of this utility model is achieved by the following methods:

The utility model comprises a boiler steam drum, a water circulation pipeline connected to the boiler steam drum, a steam-water circulation pipeline connected to the boiler steam drum, a condensate pump, a steam turbine, a generator, a condenser, a water supply pump, and a steam-water circulation The pipeline is composed of a hot steam pipe and a return water pipe, and is characterized in that: a solar heating device is arranged on the water circulation pipeline, and a solar heating device is arranged on the hot steam pipe of the steam-water circulation pipeline.

A solar heating device is arranged on the pipeline connecting the high-pressure cylinder and the medium-pressure cylinder of the steam turbine.

A solar heating device is arranged on the return pipe of the steam-water circulation pipeline.

The utility model has the advantages that: by changing the heat exchange equipment of the steam drum boiler into solar heating equipment, the utility model has practicality and is beneficial to the large-scale application of solar power generation. In addition, due to the use of reheating in this system, the utilization efficiency of solar energy is improved. It has the characteristics of easy maintenance, high thermal efficiency, no consumption of fossil fuels, and no pollution to the environment.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

In the figure, 1. Solar heating device, 2. Water circulation pipeline, 3. Boiler steam drum, 4. Solar heating device (superheater), 5. Hot steam pipe, 6. Generator, 7. Steam turbine, 8. Make-up water pump , 9, condenser, 10, condensate pump, 11, return pipe, 12, drum boiler, 13, high pressure cylinder, 14, solar heating device (reheater), 15, medium pressure cylinder, 16, low pressure cylinder, 17. Solar heating device.

Detailed ways:

Referring to accompanying drawing 1, the utility model comprises a boiler steam drum 3, a water circulation pipeline 2 connected to the boiler steam drum 3, a steam-water circulation pipeline connected to the boiler steam drum 3, a condensate pump 10, a steam turbine 7, a generator 6. Condenser (condenser) 9. Water supply pump 8. The water circulation pipeline 2 connected to the boiler drum 3 is a closed independent pipeline, and a solar heating device 1 is installed on the water circulation pipeline 2; Consists of the return pipe 11, the hot steam pipe 5 is connected to the upper part of the boiler drum 3, the return pipe 11 is connected to the lower part of the boiler drum 3, the steam turbine 7 and the condenser 9 are connected in series between the hot steam pipe 5 and the return pipe 11 A steam-water circulation circuit is formed, the condensate pump 10 is connected to the return pipe 11, the generator 6 is connected to the steam turbine 7, and the replenishment pump 8 is connected to the replenishment pipe of the condenser 9; the hot steam pipe 5 and the The return pipe 11 is provided with solar heating devices 4 and 17 respectively. A solar heating device 14 is arranged on the pipeline connecting the high-pressure cylinder 13 and the medium-pressure cylinder 15 of the steam turbine 7 . In accompanying drawing 1, the components within the dashed frame line on the left constitute the solar hot steam drum boiler 12, and the components within the dashed frame line on the right constitute the steam turbine 7.

The solar heating devices are basically divided into two types: flat plate heat collectors and concentrating heat collectors. The former is that the sunlight directly shines on the black rough surface and heats up, and the latter uses a reflector or lens to condense light to generate heat.

The working principle of the utility model: the solar heating device 1 heats the circulating water to generate steam, and separates the steam and water in the steam drum 3, and the separated steam expands into a high-temperature and high-pressure working medium through the solar heating device (superheater) 4, and is introduced into the steam turbine 7 works, drives generator 6 to generate electricity. The steam after doing work is converted into water through the condenser 9, heated by the solar heating device 17, and sent back to the steam drum 3 by the condensed water pump 10. At the same time, the use of solar reheating equipment 14 between the high and medium pressure cylinders 13 and 15 of the steam turbine improves thermal efficiency.

The steam flow process in the steam turbine is as follows: the high-temperature and high-pressure steam first enters the high-pressure cylinder 13 to do work, the exhaust steam of the high-pressure cylinder 13 passes through the solar heating device (reheater) 14 and is introduced into the medium-pressure cylinder 15 to do work, and the exhaust steam of the medium-pressure cylinder 15 enters through the connecting pipe Low-pressure cylinder 16 works.

Claims (3)

1, a kind of solar energy thermal-power-generating unit comprises boiler-steam dome, is connected water circulation pipe on the boiler-steam dome, is connected vapour-water circulation pipe, condensate pump, steam turbine, generator, vapour condenser, small pump on the boiler-steam dome, vapour-hot steam pipe of water-circulating pipe route and return pipe constitute, it is characterized in that: water circulation pipe is provided with solar heat collector, and the hot steam pipe of vapour-water circulation pipe is provided with solar heat collector.

2, solar energy thermal-power-generating unit according to claim 1 is characterized in that: the connection high-pressure cylinder of steam turbine and the pipeline of intermediate pressure cylinder are provided with solar heat collector.

3, solar energy thermal-power-generating unit according to claim 1 and 2, it is characterized in that: the return pipe of vapour-water circulation pipe is provided with solar heat collector.

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