CN102287347B - Solar constant pressure heating hot airflow engine generation system - Google Patents

Solar constant pressure heating hot airflow engine generation system Download PDF

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Publication number
CN102287347B
CN102287347B CN2011101194886A CN201110119488A CN102287347B CN 102287347 B CN102287347 B CN 102287347B CN 2011101194886 A CN2011101194886 A CN 2011101194886A CN 201110119488 A CN201110119488 A CN 201110119488A CN 102287347 B CN102287347 B CN 102287347B
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solar
solar energy
pressure heating
air
level pressure
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CN102287347A (en
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魏毅立
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AINENG CONTROL ENGINEERING Co Ltd BAOTOU CITY
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AINENG CONTROL ENGINEERING Co Ltd BAOTOU CITY
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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
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The invention relates to a solar constant pressure heating hot airflow engine generation system which comprises a double-shaft tracking solar focusing reflector surface system, a solar constant pressure heating power conversion unit (i.e. a hot airflow engine) and a generator, and is characterized in that: the solar constant pressure heating power conversion unit comprises an air compressor, an air storage tank, a solar energy absorber and an output shaft power cylinder component; the output shaft power cylinder component comprises a cylinder, a piston, a connecting rod and a crank; an air inlet and an exhaust port which are arranged on the cylinder, an air inlet valve which is arranged on the air inlet, an exhaust valve which is arranged on the exhaust port, the air compressor, the air storage tank and the solar energy absorber are sequentially and serially connected by an air transmission pipe and then are connected with the air inlet; the piston is connected with the crank through the connecting rod; ; and a crank shaft is coupled with the generator. The solar constant pressure heating hot airflow engine generation system has the advantages that: the air serves as a working substance, no water needs to serve as the working substance, no tower tube (or chimney) is needed, a huge radiating mechanism of a Stirling engine is cancelled, the cost is low, the generation efficiency is high and the stability is good.

Description

A kind of solar energy level pressure heat hot air-flow engine electric power generating system
Technical field
The present invention relates to a kind of solar energy level pressure heat hot air-flow engine electric power generating system, belong to the solar thermal power power field.
Background technique
Solar thermal power generating and solar energy power generating are the generation modes of two different types of solar electrical energy generation.The modes such as that solar thermal power generating mainly comprises is tower, slot type, dish formula, bar formula, tower cylinder hot airflow power generation.
Tower, slot type and the generating of bar formula solar thermal power need water as working medium, and tower cylinder (chimney) hot air flow solar electrical energy generation needs very high tower cylinder (chimney).
Dish formula (or disc type) solar electrical energy generation, need not the tower cylinder, also can need not water as working medium, the Stirling circulation is adopted in the generating of dish formula, because working medium need not water, therefore, solar energy dish formula Stirling engine is also referred to as hot-air engine, its desirable pressure-volume P-V schemes as shown in Figure 1, and it is comprised of two thermoisopleths and two isochores.In Fig. 1, a-b is the isothermal compression process, and b-c waits to hold heating process, and c-d is the isothermal expansion process, and d-a waits to hold cooling procedure.According to the requirement of the second law of thermodynamics to high thermal efficiency, the thermal efficiency of desirable Stirling circulation is identical with Carnot's cycle, is all maximum.
In December, 2010, first large-sized photovoltaic royalty right demonstrative project of the whole nation that National Energy Board organizes---Dunhuang 20 megawatt photovoltaic generation project round Realization are generated electricity by way of merging two or more grid systems.Domestic first solar thermal power generating royalty right demonstrative project---the Inner Mongol 50 megawatt groove type solar photothermal power generation projects are about to implement.Domestic first solar column cylinder hot airflow power generation project was generated electricity by way of merging two or more grid systems at Wuhai of Inner Mongolia in October, 2010.On March 20th, 2009, the Hu Jintao General Secretary visited 2009 Chinese international energy-saving and emission-reduction and new energy scientific and technological fairs, and come MW level solar energy tower type thermal generation Demonstration Station exhibition booth, CAS Electrical Engineering Research Institute Badaling, frontier nature to this technology has given fully certainly, and point out " this (solar energy thermal-power-generating technology) is pretty good ", development " the high point of cost in early stage is not serious; key is the technology GPRS " in China estimates that this solar energy tower type thermal generation Demonstration Station generated electricity by way of merging two or more grid systems in 2011.First Domestic solar energy thermal-power-generating Demonstration Station-Jiangning, Nanjing district 70kW tower type solar energy thermal power generation experimental project was successfully generated electricity in 2005.
At present, at home, the generating of disc type solar energy heat does not also have Demonstration Station, and its research also is nowhere near.The generating of disc type solar energy heat has begun commercial operations in the world, the operation of California, USA Solar One and Solar Two power station total 850MW (second phase reaches 1750MW), verified on dish formula Stirling systems technology and be feasible economically, has powerful vitality, the developing direction of the solar electrical energy generation of the U.S. is mainly take solar energy thermal-power-generating as main, and because disc type solar energy heat generating generating efficiency in current solar electrical energy generation is the highest, the generating of the first-selected disc type solar energy heat of the developing direction of the solar electrical energy generation of the U.S..
Summary of the invention
The purpose of this invention is to provide a kind of working medium is air, need not water and does working medium, also need not tower cylinder (or chimney), has saved the solar energy level pressure heat hot air-flow engine electric power generating system of the cooling mechanism that in the generating of solar energy butterfly, Stirling engine is huge.
The objective of the invention is to realize in the following manner:
the present invention includes double-axis tracking solar focusing mirror surface system, solar energy level pressure heating power converting unit or title hot air flow motor, generator, it is characterized in that: solar energy level pressure heating power converting unit is by air compressor, gas holder, solar collector, output shaft work cylinder assembly consists of, output shaft work cylinder assembly comprises cylinder, piston, connecting rod and crank, the suction port that cylinder is provided with and relief opening, the suction valve that is equipped with on suction port, the outlet valve that is equipped with on relief opening, air compressor, gas holder, solar collector is connected with suction port with the series connection of pneumatic tube order is rear, piston is connected with crank by connecting rod, crankshaft is connected with generator shaft, the working method of solar energy level pressure heating power converting unit is level pressure Heating Cyclic mode, heating is completed by solar collector by solar energy, solar energy level pressure heating power converting unit is open loop system, its working medium is air.
Advantage of the present invention is: working medium is air, need not water and does working medium, also need not tower cylinder (or chimney), adopts solar energy level pressure Heating Cyclic mode, has cancelled the huge cooling mechanism of Stirling engine, and cost is low, generating efficiency is high, good stability.
Description of drawings
Fig. 1 is the desirable pressure-volume P-V figure of solar energy dish formula Stirling engine;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation that solar energy level pressure heating power converting unit of the present invention connects generator;
Fig. 4 is the desirable level pressure Heating Cyclic of solar energy level pressure heating power converting unit of the present invention pressure-volume diagram;
Fig. 5 is that a kind of parallel networking type solar level pressure heat hot air-flow engine electric power generating system of the present invention is implemented state.
Embodiment
with reference to accompanying drawing 2, 3, 4, the present invention includes double-axis tracking solar focusing mirror surface system 11, solar energy level pressure heating power converting unit (hot air flow motor) 12, generator 10, solar energy level pressure heating power converting unit 12 is by air compressor 1, gas holder 2, solar collector 3, output shaft work cylinder assembly consists of, output shaft work cylinder assembly comprises cylinder 5, piston 4, connecting rod 8 and crank 9, the suction port that cylinder 5 is provided with and relief opening, the suction valve 6 that is equipped with on suction port, the outlet valve 7 that is equipped with on relief opening, solar collector 3 is heat exchangers, can be the cavity-type solar adsorber, air compressor 1, gas holder 2, be connected with suction port after solar collector 3 use pneumatic tube order series connection, in output shaft work cylinder 5, piston 4 is housed, piston 4 is by connecting rod 8 connecting cranks 9, crank 9 axles are connected with the axle of generator 10.
A kind of solar energy level pressure heat hot air-flow engine electric power generating system of the present invention, its power generation system core: solar energy level pressure heating power converting unit (hot air flow motor) 12, as shown in Figure 3.In Fig. 3, air is delivered in gas holder 2 after air compressor 1 compression, and gas holder 2 is kept air pressure in solar collector 3 constant; When outwards (right side) was mobile from interior (left side) dead point when piston 4, suction valve 6 was opened, and pressurized air expands through solar collector 3 heating level pressure in output shaft work cylinder 5 from gas holder 2; Piston 4 outwards moves to a certain degree, closes suction valve 6, and piston 4 is outside mobile until outer (right side) dead point still, this section process, and air is adiabatic expansion in output shaft work cylinder 5; Then, piston 4 beginning moves inward from the bottom dead-centre, and outlet valve 7 is opened, until close outlet valve 7 during inner dead centre.
In Fig. 3, piston 4 outwards moves to bottom dead-centre process from inner dead centre, and output shaft work cylinder 5 interior air expand and adiabatic expansion through level pressure, by piston 4, connecting rod 8 and crank 9 output shaft works, crank 9 axles are coaxial with generator 10, and shaft work is converted to electric energy by generator 10.
Solar energy level pressure heating power converting unit working medium is air, need not water and does working medium, also need not tower cylinder (or chimney), adopts solar energy level pressure Heating Cyclic mode, and its pressure-volume p-v figure as shown in Figure 4.In Fig. 4, e-f is the adiabatic compression process, is completed by air compressor 1; F-g is isobaric heating process, is completed by gas holder 2, solar collector 3, piston 4, output shaft work cylinder 5 and suction valve 6; G-h is adiabatic expansion, by output shaft work cylinder 5, close suction valve 6, piston 4 is completed; H-e waits to put thermal process, is controlled by outlet valve 7.
Solar energy level pressure heating power converting unit Air flow direction of the present invention only has a direction, and, this unit is open loop system, air is entered this unit and is flowed out this unit from the relief opening of exporting shaft work cylinder 5 by air compressor 1 entrance, therefore, solar energy level pressure heating power converting unit of the present invention is called the hot air flow motor.
Four-cycle diesel is also to adopt level pressure Heating Cyclic shown in Figure 4, but diesel engine and hot air flow motor of the present invention have a lot of differences: diesel engine using internal combustion mode, and the present invention adopts the solar energy external heating type; Cylinder of diesel engine has four strokes, i.e. pressurized air stroke, expansion expansion stroke, exhaust stroke and suction stroke, and the output shaft work cylinder in the present invention only has two strokes, and expansion stroke and exhaust stroke namely expand; Diesel engine need be established oil pump (fuel pump and Injection Pump), and the present invention does not establish oil pump; Adiabatic compression process of the present invention is completed by the compressor of separately establishing, and the adiabatic compression process of diesel engine is completed in same cylinder; The level pressure heating energy used is different, and diesel fuel is diesel oil, and the energy of the present invention is from solar energy.
Hot air flow motor of the present invention from the Stirling engine difference is: the cyclic process of employing is different, and Stirling engine adopts the Stirling circulation, and hot air flow motor of the present invention adopts the level pressure Heating Cyclic; Stirling engine is the system of remaining silent, and the hot air flow motor of this invention is open loop system; In Stirling engine gas flow direction be two-way, be hot-air engine, and hot air flow motor Air flow direction of the present invention only has a direction, is the hot air flow motor, so as with the Stirling engine difference that is called hot-air engine.The thermal efficiency of the desirable level pressure Heating Cyclic of hot air flow motor is identical with desirable Stirling circulation, hot air flow motor of the present invention is compared with the Stirling engine of solar energy butterfly generating, the advantage of this invention is to have cancelled the huge cooling mechanism of Stirling engine, after in this invention output shaft work cylinder 5, hot air expands and finishes merit, hot air directly is discharged in atmosphere, utilize atmosphere cooling, need not as Stirling engine, the cooling heat dissipation mechanism of the rear gas of acting of expanding to be set, thereby improved generating efficiency of the present invention.
A kind of solar energy level pressure heat hot air-flow engine electric power generating system that is consisted of by double-axis tracking solar focusing mirror surface system 11, solar energy level pressure heating power converting unit 12 and generator 10, as shown in Figure 2, the focus of double-axis tracking solar focusing mirror surface system is fallen on solar collector in solar energy level pressure heating power converting unit.The electric energy that the present invention sends can use from net is independent.
Air compressor 1 in the present invention can also can separately not established motor by the motor drive, and by crank 9 axle Driven by Coaxial, to reduce the wastage, to improve generating efficiency.Air compressor 1 can adopt piston compressor, and power generation system of the present invention so just has two cylinders, and one is the compressed air cylinder of piston compressor, and another is output shaft work cylinder 5.Can be air compressing arbor and crank 9 axles and coaxial being connected of generator 10 axles.
Accompanying drawing 5 illustrates a kind of parallel networking type solar level pressure heat hot air-flow engine electric power generating system specific embodiments.In Fig. 5, the focus of double-axis tracking solar focusing mirror surface system 11 is controlled on solar collector 3 in solar energy level pressure heating power converting unit 12 all the time, solar energy level pressure heating power converting unit 12 is converted to machine power to solar energy through level pressure Heating Cyclic mode, this machine power is converted to electric energy output through generator, and this is identical with system shown in Figure 2; The electric energy that generator sends is again through delivering to electrical network 14 after boosting transformer 13 boosted voltages.

Claims (2)

1. solar energy level pressure heat hot air-flow engine electric power generating system, comprise double-axis tracking solar focusing mirror surface system, solar energy level pressure heating power converting unit or title hot air flow motor, generator, it is characterized in that: solar energy level pressure heating power converting unit is by air compressor, gas holder, solar collector, output shaft work cylinder assembly consists of, output shaft work cylinder assembly comprises cylinder, piston, connecting rod and crank, the suction port that cylinder is provided with and relief opening, the suction valve that is equipped with on suction port, the outlet valve that is equipped with on relief opening, air compressor, gas holder, solar collector is connected with suction port with the series connection of pneumatic tube order is rear, piston is connected with crank by connecting rod, crankshaft is connected with generator shaft, solar energy level pressure heating power converting unit is open loop system.
2. a kind of solar energy level pressure heat hot air-flow engine electric power generating system according to claim 1, is characterized in that: air compressor employing piston compressor, the coaxial connection of crankshaft of compressor shaft and output shaft work cylinder assembly.
CN2011101194886A 2011-05-04 2011-05-04 Solar constant pressure heating hot airflow engine generation system Active CN102287347B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775293A (en) * 2014-01-21 2014-05-07 侯继奎 Solar temperature-difference type engine

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CN103216403B (en) * 2013-04-07 2014-12-17 成都沃托玛腾科技有限公司 Floor type heat-energy generator
CN103334796B (en) * 2013-07-15 2016-06-29 内蒙古科技大学 Piston type electronic control distribution engine and application thereof
CN103470399A (en) * 2013-09-25 2013-12-25 王立涛 Volumetric heat engine
CN103821679A (en) * 2014-03-10 2014-05-28 包头市爱能控制工程有限责任公司 Solar disc-type air turbine power generation system
CN106505833B (en) * 2016-11-17 2020-01-07 深圳市贵锦科技有限公司 Switch power supply for power generation device
CN106452017B (en) * 2016-11-17 2020-01-17 柳州雷亿设备有限公司 Switch power supply system capable of recovering heat
CN108457822B (en) * 2018-02-26 2023-09-26 华南理工大学 Unmanned ship power device utilizing solar heat energy
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CN1991155A (en) * 2005-12-29 2007-07-04 陈茂盛 Hot-air engine device and its manufacturing method
CN201507401U (en) * 2009-08-10 2010-06-16 青岛敏深风电科技有限公司 Steam generator for solar electric power generation
CN201739107U (en) * 2010-08-06 2011-02-09 王智勇 Disc type solar energy-thermomotor thermal power generation device

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Publication number Priority date Publication date Assignee Title
US4896507A (en) * 1988-11-28 1990-01-30 Sundstrand Corporation Solar power system
US4945731A (en) * 1988-12-12 1990-08-07 Parker Robin Z Absorbing fluid receiver for solar dynamic power generation and solar dynamic power system
CN1773110A (en) * 2005-11-11 2006-05-17 丁桦 Compression air energy-storing apparatus and application thereof
CN1991155A (en) * 2005-12-29 2007-07-04 陈茂盛 Hot-air engine device and its manufacturing method
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Publication number Priority date Publication date Assignee Title
CN103775293A (en) * 2014-01-21 2014-05-07 侯继奎 Solar temperature-difference type engine
CN103775293B (en) * 2014-01-21 2016-04-13 侯继奎 Solar energy temperature-difference engine

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