CN102338050A - Trench type solar energy atomizing and flashing thermal power generation system device - Google Patents
Trench type solar energy atomizing and flashing thermal power generation system device Download PDFInfo
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- CN102338050A CN102338050A CN2010102383429A CN201010238342A CN102338050A CN 102338050 A CN102338050 A CN 102338050A CN 2010102383429 A CN2010102383429 A CN 2010102383429A CN 201010238342 A CN201010238342 A CN 201010238342A CN 102338050 A CN102338050 A CN 102338050A
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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
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- 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
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Abstract
The invention relates to a trench type solar energy atomizing and flashing thermal power generation system device. The device provided by the invention comprises a parabolic trough condensing device, a line focusing strengthening and heat-collecting pipe, an atomized water vapor working medium, an atomizer, an atomizing and flashing tank, a vaporizing tank, a jetting pump, a steam drum, a water pump, a pressure pump, a pressure control valve, a thermal power machine, a heat exchanger, a heat storage tank, a condenser and the like, and the system device adopts atomized water vapor as an initial heat transfer working medium in a parabolic trough light-gathering array; in the system, devices such as the atomizer, the atomizing and flashing tank and the like are configured; and the atomized water vapor is introduced into the system in a controlled manner so as to keep the pressure constant, and solar energy is condensed for heating to generate saturated vapor and superheated steam so as to directly drive a steam turbine and drive a generator, thus realizing a solar heat-gathering and power-generating DSG (direct stream generation) device. The technology belongs to the field of utilization of solar heat.
Description
Technical field
The present invention relates to a kind of employing atomized steam as heat-transfer working medium and the system and device that adopts atomization flash-evaporation method realization groove type solar heat build-up generating (CSP); This system strengthens equipment such as heat collecting pipe, atomizer and gasifying pot by linear focusing; What control was arranged imports atomized steam in system; In the optically focused array, produce saturated vapour and superheated vapor, finally drive steam turbine and drive the system and device that generator is accomplished groove type solar heat build-up generating.This technology belongs to solar energy heat utilization field.
Background technique
Solar energy heat build-up generating (CSP) is compared photovoltaic generation (PV) and is had outstanding features such as scale is big, concentration degree is high, efficient height; But the common issue that faces is how to reduce cost of investment and how to improve generating efficiency and then the reduction cost of electricity-generating, especially reduces manufacture cost and just becomes two kinds of solar energy generation technology competition focal point with the raising generating efficiency.Solar energy heat build-up generating (CSP) mainly contains four kinds of hot power generation modes such as slot type, tower, dish formula and reflection Fresnel, and wherein groove type solar heat build-up generating has realized commercialization.It is heat-transfer working medium that this technology mainly adopts conduction oil, produces the conventional steam turbine generator generating of steam rear driving through the conduction oil heat exchange.Because present conduction oil operating temperature does not allow to be higher than 400 degree; Exceed this temperature and will cause cracking, viscosity to improve and the heat transfer efficiency reduction, therefore limited the further raising of groove type solar heat build-up generating efficiency, simultaneously; The conduction oil user cost is high, the life-span is short; Therefore press for new heat-transfer working medium and replace conduction oil,, reduce apparatus cost and operating cost to improve operating temperature.The working medium substitute technology that present international solar energy heat build-up generating (CSP) field is being studied has fused salt and water directly to do two kinds of technology of the DSG of heat-transfer working medium (direct steam generation).The former generally adopts the nitrose fused salt; Crystallization point is higher; Mostly about 230 to 260 ℃; Italy Archimedes company uses fused salt to start in the Sicily first as the solar thermal power plants of thermal fluid, this also be first solar energy heat build-up generating in the world adopt fused salt circulation and with the power generation complemented power station of combustion vapour.Archimedes adopts the high temperature resistant and corrosion resistant linear focusing heat collecting pipe of oneself producing, and the working medium temperature is at the 400-550 degree.Can store simultaneously and reach several hours solar heat.The fused salt of crystallization point below 100 degree studied in the Sang Diya laboratory by the U.S., if successfully will be hopeful to replace high-solidification point fused salt and conduction oil.The employing fused salt is that the major defect of heat-transfer working medium is high temperature corrosion and high crystallization point; And the device fabrication cost that improves thus; Secondly be that operation risk is very big; In case break down, fused salt will be set in the equipment inevitably and damage whole system, so this system must be equipped with combustion gas or carry out complementation with the coal electricity.Water is directly cooked the DSG technology of heat-transfer working medium and has been tested for many years, mainly is responsible for enforcement by Hispanic PSA, and this experiment has also been participated at German space flight and aviation center.Experiment shows, because this technology exists instantaneous pressure to be difficult to control, and water two phase flow transmission and pressure for vaporization problem such as inhomogeneous in heat collecting pipe in heat collecting pipe, this technology that generally is expected still rests on experimental stage so far.But as long as these several problems are solved, the DSG technology is exactly minimum, the most effective solar energy thermal-power-generating technology of cost so.
Summary of the invention
The present invention is exactly to be heat-transfer working medium with the atomized steam for further solving a kind of that a DSG key technology difficult problem proposes, and utilizes flash evaporation technology to realize the system and device of groove type solar heat build-up generating.
The present invention strengthens heat collecting pipe, atomized steam working medium, atomizer, gasifying pot, atomization flash-evaporation jar, drum, pressure pump, Jet injector, water pump, pressure controlled valve, heat power machine, generator, heat storage can, heat exchanger, condenser, modulating valve, transfer line etc. by parabola groove optically focused array, linear focusing and forms; It is characterized in that: parabola groove optically focused array front end is provided with atomizer; The atomizer connecting line focuses on strengthens the heat collecting pipe import; Linear focusing is strengthened the heat collecting pipe outlet and is connected the drum import; One of them outlet of drum connects heat power machine low voltage terminal, connects next parabola groove optically focused array simultaneously to produce superheated vapor; The parabola groove optically focused array outlet that produces superheated vapor connects heat power machine high voltage terminal, connects the exhaust steam heat exchange of heat power machine simultaneously and is used for the heat exchanger entrance point of heat accumulation; Heat exchanger connects the modulating valve of heat storage can and condensator outlet end; Modulating valve connects water pump or pressure pump; Water pump or pressure pump connect the atomizer inlet, and the atomizer outlet connects the focusing of parabola groove optically focused array front end of line and strengthens the heat collecting pipe import, finally forms the complete Lang Ken circulatory system; Another outlet of drum connects pressure controlled valve to condenser one end and the import of atomizer condensed water; Jet injector, atomization flash-evaporation jar are separately positioned in the parabola groove optically focused array that produces saturated vapour and superheated vapor; Standard equipment reasonable disposition such as pressure pump, condenser and water pump are in circulation system.
Another technological scheme is at parabola groove optically focused array outlet end the atomization flash-evaporation jar to be set, and the atomization flash-evaporation jar is divided into saturated jar and overheated jar, imports and exports for two jars to link to each other, and two jars of another imports simultaneously connect parabola groove optically focused array high-temperature gas outlet end respectively; Overheated jar of outlet connects the heat power machine; Atomizer one end connects water pump or the pressure pump that links to each other with condenser, and the linear focusing that the other end is installed in the parabola groove optically focused array is strengthened the heat collecting pipe ingress; Gasifying pot or Jet injector are arranged in the parabola groove optically focused array; Drum is set up atomizer spout and water of condensation outlet.
The metal inner pipe that said linear focusing is strengthened heat collecting pipe is annular node or the metal inner pipes such as spiral node, luxuriant bulk wave joint with forced heat exchanging function; Can impel heat exchange medium in pipe, to become laminar heat transfer and be turbulent heat transfer, can carry internal pressure simultaneously greater than 10Mpa.
Said atomized steam working medium is that water is sprayed the tiny atomized drop that produces through atomizer or Jet injector under certain pressure; After parabola groove optically focused and the heating of linear focusing heat collecting pipe, can form high temperature saturated vapour or superheated vapor, temperature can rise to 600 ℃ from 100 ℃.
For realizing that heat-transfer working medium substitutes and avoid problems such as stream-liquid two-phase flow that water conservancy project matter once occurred and vapour pressure be inhomogeneous, disposes gasifying pot, atomization flash-evaporation jar or Jet injector in parabola groove optical block array.
Said atomizer is the device that is provided with waterfog head.
Waterfog head is set said gasifying pot and the high temperature steam flow is imported and exported.
Said drum is provided with the saturated vapour import and export, pressure is regulated outlet, water of condensation outlet;
Said Jet injector is provided with steam inlet, high temperature steam flow spout, drainage port and accelerating cavity, is installed in the parabola groove optical block array.
Said pressure pump is vapour pressure pump or hydraulic pamp, and initial transmission pressure mainly is provided, and guarantees that atomized steam produces and in parabola groove optically focused array, quickens mobile.
Said water pump is the recycle pump or the hydraulic pamp of system cools water.
Said pressure controlled valve is the reduction valve or the control valve that can keep automatically with pilot pressure.
Said heat power machine is steam turbine or screw expansion motor.
Said heat exchanger is salt vapour or vapour vapour heat exchanger.
Said heat storage can is the device that is used for fused salt class material heat accumulation, comprises cold jar and heat jar.
Said atomization flash-evaporation jar advances spout, pressure controlled valve, saturated vapour or superheated vapor output port by vaporization chamber, waterfog head, high temperature steam flow and constitutes, and is primarily implemented in the water smoke that will spray atomizing under the effect of high temperature steam flow produces saturated vapour and superheated vapor through flash distillation function.Be divided into saturated jar and overheated jar.
This invention mainly contains following innovative point:
1, in heat collecting pipe, forms the steam two phase flow for overcoming water conservancy project matter;, the linear focusing in parabola groove optically focused array increases atomization plant before strengthening heat collecting pipe injection water conservancy project matter; At first liquid water is transformed into atomized steam, atomized steam is not accomplish the fine liquid particles of phase transformation, under the temperature suitable condition, is suspended in the pipeline easily; Along with temperature in the heat collecting pipe raises; In transmission course, progressively realize the phase transformation of atomized steam, form low-pressure saturated steam, form superheated vapor through parabola groove optically focused array superheat section.
2, atomized steam is realized by atomizer through certain pressure; Atomizer mainly is made up of liquid tangent line inlet, liquid in rotation chamber, nozzle bore etc., utilizes high-pressure service pump to make liquid obtain very high pressure (2-20MPa), and liquid obtains in the rotating room to rotatablely move; Form greater than atmospheric air swirl in atomizer central authorities; Liquid then rotates around air core and forms annular membrane, and liquid film elongation attenuation is split into little droplet at last under pressure.
3, according to the variation in pressure input of the gasifying pot in trend parabola groove optically focused array in good time atomized steam; Regulate the internal pressure that linear focusing is strengthened heat collecting pipe through increasing steam moisture; Pressure regulator valve and unloading pipeline, common guarantee isostasy also can be set in system simultaneously specially.
4, with traditional groove type solar heat build-up electricity generating device use with the high-temperature heat-collection pipe of metal straight pipe as major character; Replace to the linear focusing with forced heat exchanging function and strengthen heat collecting pipe, this metal inner pipe has the effect of heat-transfer working medium being carried out disturbance and destruction current stabilization layer.
5, utilize atomized steam to substitute traditional conduction oil, fused salt and water conservancy project matter, utilize atomizing vapour regulating system pressure simultaneously, produce saturated vapour and superheated vapor through atomization flash-evaporation as heat-transfer working medium.
6, this device is provided with the hot energy storage canister of fused salt, and the unnecessary superheated vapor of peak value is used to heat fused salt, guarantees under the situation of unglazed photograph, to generate electricity for device provides deposit heat energy.
7, for guaranteeing stable output saturated vapour or superheated vapor under the situation that instantaneous pressure raises; Increase a pressure controlled valve between atomization flash-evaporation jar and condenser; Its key effect is bypass and regulate instantaneous pressure, overcomes gas pressure in the DSG technology and is difficult to the drawback regulating and control.
8, a drum is set between parabola groove optically focused array and before the heat power machine; The low-pressure saturated steam that drum produces is directly imported the acting of heat power machine low voltage terminal; And another part saturated vapour is heated into superheated vapor input heat power machine high voltage terminal through the optically focused array; This measure not only can substitute conventional heat exchanger package, can significantly reduce heat exchange loss simultaneously, improves generating efficiency.
9, two atomization flash-evaporation jars are set before the heat power machine, bear saturated atomization flash-evaporation task for one, another bears superheating atomizing flash distillation task; The high temperature gas flow that adds thermosetting through parabola groove optically focused array at first gets into saturated atomization flash-evaporation jar, and the saturated air of generation gets into the superheating atomizing flash drum, and the superheated vapor of formation drives the heat power machine and drives generator for electricity generation.Substitute conventional heat exchanger with the atomization flash-evaporation jar.
Description of drawings
Fig. 1 is a DSG atomized steam heat generating schematic representation of the present invention
Fig. 2 is steam two phase flow and a temperature gradient schematic representation in traditional DSG heat collecting pipe
Fig. 3 is a DSG atomized steam heat generating schematic representation of the present invention
Fig. 4 is a DSG atomization flash-evaporation heat generating schematic representation of the present invention
Wherein 1, the parabola groove optical block, 2, linear focusing strengthens heat collecting pipe, 3, atomizer; 4, gas bag, 5, gasifying pot, 6, Jet injector, 7, pressure pump, 8, pressure controlled valve; 9, atomization flash-evaporation jar, 10, the heat power machine, 11, condenser; 12, heat storage can, 13, heat exchanger, 14, water pump, 15, modulating valve
Embodiment
1, the heat collecting pipe that groove type solar heat build-up power generation system is used is replaced by annular node with forced heat exchanging function or the linear focusing of spiral node metal inner pipe is strengthened heat collecting pipe (2); Give full play to linear focusing and strengthen the agitation of heat collecting pipe (2), become laminar flow and be heated to be the eddy current heating heat-transfer working medium.
2, be to adopt atomizing gas replacement conduction oil or water to do heat-transfer working medium.For inheriting the DSG technical advantage; Overcome the shortcoming that direct heating water conservancy project matter exists; In working medium import of parabola groove Accumulated Heat Units and optically focused array, selectively increase atomizer (3), gas bag (4), gasifying pot (5) or Jet injector atomising devices such as (7); Utilize these devices to produce atomized steam, utilize to contain " vapour " gas completion transmission of heat.
3, atomization flash-evaporation jar (9) is set, produces the low-pressure saturated steam that the heat generating needs through the saturation vapour flash distillation, this measure not only can substitute conventional heat exchanger, can reduce heat exchange loss simultaneously.
4, parabola groove optically focused array is divided into saturated vapour generation array and superheated vapor generation array, and atomization flash-evaporation jar (9) is placed in the middle of two arrays.Transfer line inserts the generating of heat power machine (10) drive generator set with saturated vapour and superheated vapor respectively.
5, adopt the fused salt heat-storage technology, accomplish heat accumulation and heat release, take into account Preheating unit import vapour-liquid simultaneously, be beneficial to second day stable startup of Accumulated Heat Units through heat storage can (12) and heat exchanger (13).
6, for guaranteeing stable output saturated vapour or superheated vapor under the situation that instantaneous pressure raises; Increase a pressure controlled valve (8) between atomization flash-evaporation jar (9) and condenser (11); Play bypass and the effect of regulating instantaneous pressure, overcome gas pressure in the DSG technology and be difficult to the drawback regulating and control.
7, for adapting to the work of hyperthermia and superheating steam electric power unit; The saturation vapour that saturated vapour generation array produces is through atomization flash-evaporation jar (9) flash distillation; The saturated vapour that produces directly gets into superheated vapor generation array, is driven heat power machine (10) and is driven the generator set generating by superheated vapor.
8, another kind of technological scheme is that two atomization flash-evaporation jars (9) are set behind parabola groove optically focused array, bears saturated atomization flash-evaporation task for one, and another bears superheating atomizing flash distillation task; The high temperature gas flow that adds thermosetting through parabola groove optically focused array at first gets into saturated atomization flash-evaporation jar, and the saturated air of generation gets into the superheating atomizing flash drum, and the superheated vapor of formation drives heat power machine (10) and drives generator for electricity generation.
Claims (2)
1. groove type solar atomization flash-evaporation heat generating system device is made up of parabola groove optically focused array, linear focusing reinforcement heat collecting pipe, atomized steam working medium, atomizer, gasifying pot, atomization flash-evaporation jar, drum, pressure pump, Jet injector, water pump, pressure controlled valve, heat power machine, heat storage can, heat exchanger, condenser, modulating valve, transfer line etc., it is characterized in that:
1) parabola groove optically focused array front end is provided with atomizer; The atomizer connecting line focuses on strengthens the heat collecting pipe import; Linear focusing is strengthened the heat collecting pipe outlet and is connected the drum import, and one of them outlet of drum connects heat power machine low voltage terminal, connects next parabola groove optically focused array simultaneously to produce superheated vapor; The parabola groove optically focused array outlet that produces superheated vapor connects heat power machine high voltage terminal, connects the exhaust steam heat exchange of heat power machine simultaneously and is used for the heat exchanger entrance point of heat accumulation; Heat exchanger connects the modulating valve of heat storage can and condensator outlet end; Modulating valve connects water pump or pressure pump; Water pump or pressure pump connect the atomizer inlet, and the atomizer outlet connects the focusing of parabola groove optically focused array front end of line and strengthens the heat collecting pipe import, finally forms the complete Lang Ken circulatory system; Another outlet of drum connects pressure controlled valve to condenser one end and atomizer water delivery import; Jet injector, atomization flash-evaporation jar are separately positioned in the parabola groove optically focused array that produces saturated vapour and superheated vapor; Standard equipment reasonable disposition such as pressure pump, condenser and water pump are in circulation system;
2) said atomized steam working medium is that water is sprayed the empty vapour that produces mixes formation with water molecule suspensible atomized steam drop through atomizer or Jet injector under certain pressure; After parabola groove optically focused and the heating of linear focusing heat collecting pipe, can form high temperature saturated vapour or superheated vapor, temperature is at 100 ℃ to 600 ℃;
3) to strengthen the metal inner pipe of heat collecting pipe be annular node or spiral node, the luxuriant bulk wave joint metal inner pipe with forced heat exchanging function for said linear focusing, can carry the pressure greater than 10Mpa;
4) said atomizer is the device that is provided with waterfog head;
5) said gasifying pot is provided with waterfog head and the import and export of high temperature steam flow;
6) said drum is provided with the saturated vapour import and export, pressure is regulated outlet, water of condensation outlet;
7) said Jet injector is provided with steam inlet, high temperature steam flow spout, drainage port and accelerating cavity, is installed in the parabola groove optical block array;
8) said pressure pump is vapour pressure pump or hydraulic pamp, and initial transmission pressure mainly is provided, and guarantees that atomized steam produces and in parabola groove optically focused array, quickens mobile;
9) said water pump is the recycle pump or the hydraulic pamp of system cools water;
10) said pressure controlled valve is the reduction valve or the control valve that can keep automatically with pilot pressure;
11) said heat power machine is steam turbine or screw expansion motor;
12) said heat exchanger is salt vapour or vapour vapour heat exchanger;
13) said heat storage can is the device that heat-retaining mass is deposited, and comprises cold jar and heat jar.
2. groove type solar atomization flash-evaporation heat generating system device according to claim 1; It is characterized in that: said another technological scheme is that the atomization flash-evaporation jar is arranged on parabola groove optically focused array outlet end; The atomization flash-evaporation jar is divided into saturated atomization flash-evaporation jar and superheating atomizing flash drum; Two jars of import and export link to each other, and two jars of another imports simultaneously connect parabola groove optically focused array high temperature outlet end respectively; The outlet of superheating atomizing flash drum connects the heat power machine; Atomizer one end connects water pump or the pressure pump that links to each other with condenser, and the linear focusing that the other end is installed in the parabola groove optically focused array is strengthened the heat collecting pipe ingress; Gasifying pot or Jet injector are arranged in the parabola groove optically focused array; Drum is set up atomizer spout and condensation-water drain.
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| CN2010102383429A CN102338050B (en) | 2010-07-28 | 2010-07-28 | Trench type solar energy atomizing and flashing thermal power generation system device |
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| CN2010102383429A CN102338050B (en) | 2010-07-28 | 2010-07-28 | Trench type solar energy atomizing and flashing thermal power generation system device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661259A (en) * | 2012-05-03 | 2012-09-12 | 中国华能集团清洁能源技术研究院有限公司 | High-efficiency integrated solar thermal power generation system |
| CN104929876A (en) * | 2015-07-07 | 2015-09-23 | 蔡杰美 | Solar photo-thermal steam power generating system |
| CN109268224A (en) * | 2018-11-15 | 2019-01-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of geothermal energy and solar energy coupling power-generating apparatus and method |
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| US4080271A (en) * | 1977-06-06 | 1978-03-21 | Brown Howard D | Solar powered gas generation |
| US4265223A (en) * | 1978-09-18 | 1981-05-05 | The Badger Company, Inc. | Method and apparatus for utilizing solar energy |
| JP2006132871A (en) * | 2004-11-08 | 2006-05-25 | Sanden Corp | Rankine system |
| CN101392736A (en) * | 2008-05-29 | 2009-03-25 | 中国科学技术大学 | Solar low-temperature thermal power generation and cold- thermal co-feeding system |
| CN101614196A (en) * | 2009-07-29 | 2009-12-30 | 中国科学技术大学 | Inner thermal storage solar low-temperature thermal power generation system |
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2010
- 2010-07-28 CN CN2010102383429A patent/CN102338050B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080271A (en) * | 1977-06-06 | 1978-03-21 | Brown Howard D | Solar powered gas generation |
| US4265223A (en) * | 1978-09-18 | 1981-05-05 | The Badger Company, Inc. | Method and apparatus for utilizing solar energy |
| JP2006132871A (en) * | 2004-11-08 | 2006-05-25 | Sanden Corp | Rankine system |
| CN101392736A (en) * | 2008-05-29 | 2009-03-25 | 中国科学技术大学 | Solar low-temperature thermal power generation and cold- thermal co-feeding system |
| CN101614196A (en) * | 2009-07-29 | 2009-12-30 | 中国科学技术大学 | Inner thermal storage solar low-temperature thermal power generation system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661259A (en) * | 2012-05-03 | 2012-09-12 | 中国华能集团清洁能源技术研究院有限公司 | High-efficiency integrated solar thermal power generation system |
| CN104929876A (en) * | 2015-07-07 | 2015-09-23 | 蔡杰美 | Solar photo-thermal steam power generating system |
| CN109268224A (en) * | 2018-11-15 | 2019-01-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of geothermal energy and solar energy coupling power-generating apparatus and method |
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| CN102338050B (en) | 2013-11-27 |
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