Board slot combined solar energy and thermal power station complementary generating system

A power generation system, solar technology, applied in the field of complementary power generation systems, can solve the problems of solar energy instability and discontinuity, achieve high-quality conversion, improve thermal efficiency, and achieve low manufacturing and operating costs

Active Publication Date: 2012-05-16
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a complementary power generation system of solar energy and thermal power stations combined with plates and slots, which can expand the capacity of thermal power st...

Method used

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  • Board slot combined solar energy and thermal power station complementary generating system
  • Board slot combined solar energy and thermal power station complementary generating system
  • Board slot combined solar energy and thermal power station complementary generating system

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Embodiment

[0031] The unit before the transformation is a 200MW conventional coal-fired thermal power station, and the 600W / m 2 For the system design point, figure 1 It is a schematic structural diagram of a complementary power generation system of solar energy and thermal power stations combined with plate slots.

[0032] Solar radiation intensity reaches 600W / m 2 When above, the system is running at the design point, and the valves 18 and 19 are opened. The specific process is: the high-temperature and high-pressure steam generated in the coal-fired boiler 1 expands and works in the high, medium and low pressure cylinders 2, 3 and 4 of the steam turbine, driving The generator 5 rotates and outputs electric load to the outside. The exhausted steam enters the condenser 6 and condenses into water. After being pressurized by the condensate pump 7, it enters the oil-water heat exchanger 13 of the low-pressure solar water heater to absorb the flat solar heat collector 15 and The heat provi...

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Abstract

The invention discloses a board slot combined solar energy and thermal power station complementary generating system which comprises a coal-fired boiler, a steam turbine, a generator, a condenser, a condensate pump, an oil-water heat exchanger of a low-pressure solar feed water heater, a flat-plate solar collector, a first parabolic trough type solar collector, a deaerator, a high-pressure water pump, an oil-water heat exchanger of a high-pressure solar feed water heater and a second parabolic trough type solar collector, wherein the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder; high-temperature and high-pressure steam generated in the coal-fired boiler does work by expansion in the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder of the steam turbine to drive a generator to rotate and output an electrical load externally. The generating system can be used for realizing the capacity expansion and consumption reduction of thermal power stations and solving the problem that the solar energy is unstable and discontinuous, and is beneficial to low-cost transformation of the thermal power stations and large-scale application and popularization of a solar energy technology.

Description

technical field [0001] The present invention relates to the technical field of complementary power generation system and solar energy utilization, in particular to a complementary power generation system of solar energy and thermal power station combined with plates and grooves, in particular to a parabolic trough solar collector utilizing a flat-plate solar heat collector and a low concentration ratio. A complementary power generation system in which the solar feedwater heater composed of a solar heater replaces the steam turbine steam extraction feedwater heater to heat the feedwater. Background technique [0002] my country's coal-fired thermal power plants have mature technology and good economy, and their power generation accounts for more than three-quarters of the country's total power generation. To achieve the national goal of "energy saving and emission reduction", conventional coal-fired thermal power plants urgently need to find new ways to reduce energy consumpti...

Claims

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Application Information

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IPC IPC(8): F01K11/02F01K19/00F24J2/04F22B1/00
CPCY02E10/44
Inventor 金红光洪慧赵雅文张传强
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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