CN102338050B - 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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- CN102338050B CN102338050B CN2010102383429A CN201010238342A CN102338050B CN 102338050 B CN102338050 B CN 102338050B CN 2010102383429 A CN2010102383429 A CN 2010102383429A CN 201010238342 A CN201010238342 A CN 201010238342A CN 102338050 B CN102338050 B CN 102338050B
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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 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 adopt the atomization flash-evaporation method to realize the system and device of groove type solar heat build-up generating (CSP), this system is strengthened the equipment such as heat collecting pipe, atomizer and gasifying pot by linear focusing, what control was arranged inputs atomized steam in system, in light-condensing array, produce saturated vapour and superheated vapor, finally drive steam turbine and drive the system and device that generator completes 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 the outstanding features such as scale is large, concentration degree is high, efficiency is high, but the common issue faced is how to reduce cost of investment and how to improve generating efficiency and then reduce cost of electricity-generating, especially reduces manufacture cost and improves the focus that generating efficiency just becomes two kinds of solar energy generation technology competitions.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 current conduction oil operating temperature does not allow higher than 400 degree, exceeding this temperature 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 in the urgent need to there being new heat-transfer working medium to replace conduction oil, to improve operating temperature, reduce apparatus cost and operating cost.The working medium substitute technology that current 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 230 to 260 ℃ of left and right, Italy Archimedes company is used fused salt in Sicily, to start first as the solar thermal power plants of thermal fluid, and this is also that fused salt circulation the power station power generation complemented with combustion vapour are adopted in first solar energy heat build-up generating in the world.Archimedes adopts the high temperature resistant and corrosion resistant linear focusing heat collecting pipe of oneself producing, and Temperature of Working is at the 400-550 degree.Can store simultaneously the nearly solar heat of a few hours.U.S. Sang Diya is studying in laboratory the fused salt of crystallization point below 100 degree, 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 improved thus, secondly be that operation risk is very large, in case break down, fused salt will inevitably be set in equipment 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 by Hispanic PSA, is responsible for enforcement, and German space flight and aviation center has also participated in this experiment.Experiment shows, because existing instantaneous pressure, this technology is 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 generally be expected still rests on experimental stage so far.But as long as these 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 a kind ofly be take atomized steam and is heat-transfer working medium for what further solve 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 is by the parabola groove light-condensing array, linear focusing strengthening heat collecting pipe, atomized steam working medium, atomizer, gasifying pot, the atomization flash-evaporation tank, drum, pressure pump, Jet injector, water pump, pressure controlled valve, the heat power machine, generator, heat storage can, heat exchanger, condenser, modulating valve, the compositions such as transfer line, it is characterized in that: parabola groove light-condensing array front end arranges atomizer, the atomizer connecting line focuses on the import of strengthening heat collecting pipe, the outlet of linear focusing strengthening heat collecting pipe connects the drum import, one of them outlet of drum connects heat power machine low voltage terminal, connect simultaneously next parabola groove light-condensing array to produce superheated vapor, the parabola groove light-condensing array outlet that produces superheated vapor connects heat power machine high voltage terminal, connects simultaneously the exhaust steam heat exchange of heat power machine and 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 entrance, and the atomizer outlet connects parabola groove light-condensing array front end of line and focuses on the import of strengthening heat collecting pipe, finally forms the complete Lang Ken circulatory system, another outlet Bonding pressure control valve of drum is to condenser one end and the import of atomizer condensed water, Jet injector, atomization flash-evaporation tank are separately positioned in the parabola groove light-condensing array that produces saturated vapour and superheated vapor, the standard equipment reasonable disposition such as pressure pump, condenser and water pump are in circulation system.
Another technological scheme is, at parabola groove light-condensing array outlet end, the atomization flash-evaporation tank is set, and the atomization flash-evaporation tank is divided into saturated tank and overheated tank, and two tanks are imported and exported and are connected, and another import of two tanks simultaneously connects respectively parabola groove light-condensing array high-temperature gas outlet end; Overheated tank outlet connects the heat power machine; Atomizer one end connects water pump or the pressure pump be connected with condenser, and the other end is arranged on the linear focusing strengthening heat collecting pipe ingress in the parabola groove light-condensing array; Gasifying pot or Jet injector are arranged in the parabola groove light-condensing array; Drum is set up atomizer spout and water of condensation outlet.
The metal inner pipe of described linear focusing strengthening 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 the internal pressure that is greater than 10Mpa simultaneously.
Described atomized steam working medium is that water is sprayed to the tiny atomized drop produced 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 the problems such as heat-transfer working medium substitutes and avoid stream-liquid two-phase flow that device of working medium once occurred and vapour pressure is inhomogeneous, configure gasifying pot, atomization flash-evaporation tank or Jet injector in parabola groove optical block array.
Described atomizer is the device that is provided with waterfog head.
Waterfog head is set described gasifying pot and the high temperature steam flow is imported and exported.
Described drum is provided with the saturated vapour import and export, pressure is regulated outlet, water of condensation outlet;
Described Jet injector is provided with steam inlet, high temperature steam flow spout, drainage port and accelerating cavity, is arranged in parabola groove optical block array.
Described pressure pump is vapour pressure pump or hydraulic pamp, and initial transmission pressure mainly is provided, and guarantees that atomized steam produces and in the parabola groove light-condensing array, accelerates to flow.
Described water pump is recycle pump or the hydraulic pamp of system cools water.
Described pressure controlled valve is reduction valve or the control valve that can automatically keep with pilot pressure.
Described heat power machine is steam turbine or screw expansion motor.
Described heat exchanger is salt vapour or vapour vapour heat exchanger.
Described heat storage can is the device for fused salt class material heat accumulation, comprises cold tank and hot tank.
Described atomization flash-evaporation tank advances spout, pressure controlled valve, saturated vapour or superheated vapor output port by vaporization chamber, waterfog head, high temperature steam flow and forms, and is primarily implemented under the effect of high temperature steam flow and the water smoke of spray atomizing is produced to the function of saturated vapour and superheated vapor by flash distillation.Be divided into saturated tank and overheated tank.
This invention mainly contains following innovative point:
1, for overcoming device of working medium, in heat collecting pipe, form the steam two phase flow, before the strengthening of the linear focusing in parabola groove light-condensing array heat collecting pipe injected water working medium, increase atomization plant, at first liquid water is transformed into to atomized steam, atomized steam is the fine liquid particles that does not complete phase transformation, under the temperature suitable condition, easily be suspended in pipeline, along with temperature in heat collecting pipe raises, in transmitting procedure, progressively realize the phase transformation of atomized steam, form low-pressure saturated steam, form superheated vapor through parabola groove light-condensing array superheat section.
2, atomized steam is realized by atomizer by certain pressure, atomizer mainly is comprised of liquid tangent line entrance, liquid in rotation chamber, nozzle bore etc., utilize high-pressure service pump to make liquid obtain very high pressure (2-20MPa), liquid obtains and rotatablely moves in rotating room, in atomizer central authorities, form and be greater than atmospheric air swirl, liquid circularizes film around the air core rotary, and liquid film elongation attenuation, finally be split into little droplet under pressure.
3, according to pressure, change the atomized steam of the input of the gasifying pot in trend parabola groove light-condensing array in good time, by increasing steam moisture, regulate the internal pressure of linear focusing strengthening heat collecting pipe, pressure regulator valve and unloading pipeline also can be set specially in system, the common guarantee isostasy simultaneously.
4, traditional groove type solar heat build-up electricity generating device is used with the high-temperature heat-collection pipe of metal straight pipe as major character, replace to the linear focusing strengthening heat collecting pipe with forced heat exchanging function, this metal inner pipe has the effect of heat-transfer working medium being carried out to disturbance and destruction current stabilization layer.
5, utilize atomized steam to substitute conventional heat-conduction oil, fused salt and device of working medium as heat-transfer working medium, utilize simultaneously atomization vapour regulating system pressure, produce saturated vapour and superheated vapor by atomization flash-evaporation.
6, this device arranges the hot energy storage canister of fused salt, and the unnecessary superheated vapor of peak value, for heating fused salt, is guaranteed in the situation that unglazed photograph generates electricity for device provides deposit heat energy.
7, for guaranteeing, in the situation that raising, instantaneous pressure stablizes output saturation steam or superheated vapor, between atomization flash-evaporation tank and condenser, increase a pressure controlled valve, its key effect is bypass and regulates instantaneous pressure, overcomes the drawback that gas pressure in the DSG technology is difficult to regulation and control.
8, a drum is set between the parabola groove light-condensing array and before the heat power machine, the low-pressure saturated steam that drum produces is directly inputted to the acting of heat power machine low voltage terminal, and another part saturated vapour is heated into to superheated vapor input heat power machine high voltage terminal through light-condensing array, this measure not only can substitute conventional heat exchanger package, can significantly reduce simultaneously the heat exchange loss, improve generating efficiency.
9, two atomization flash-evaporation tanks are set before the heat power machine, bear saturated atomization flash-evaporation task for one, another bears superheating atomizing flash distillation task; At first the high temperature gas flow that adds thermosetting through the parabola groove light-condensing array enters saturated atomization flash-evaporation tank, and the saturated air of generation enters the superheating atomizing flash drum, and the superheated vapor of formation drives the heat power machine and drives the generator generating.With the atomization flash-evaporation tank, substitute conventional heat exchanger.
The accompanying drawing explanation
Fig. 1 is DSG atomized steam heat generating schematic diagram of the present invention
Fig. 2 is steam two phase flow and temperature gradient schematic diagram in traditional DSG heat collecting pipe
Fig. 3 is DSG atomized steam heat generating schematic diagram of the present invention
Fig. 4 is DSG atomization flash-evaporation heat generating schematic diagram of the present invention
Wherein 1, parabola groove optical block, 2, linear focusing strengthening heat collecting pipe, 3, atomizer, 4, gas bag, 5, gasifying pot, 6, Jet injector, 7, pressure pump, 8, pressure controlled valve, 9, the atomization flash-evaporation tank, 10, the heat power machine, 11, condenser, 12, heat storage can, 13, heat exchanger, 14, water pump, 15, modulating valve
Embodiment
1, heat collecting pipe groove type solar heat build-up power generation system used is replaced by annular node with forced heat exchanging function or the linear focusing strengthening heat collecting pipe (2) of spiral node metal inner pipe, give full play to the agitation of linear focusing strengthening heat collecting pipe (2) to heat-transfer working medium, become laminar flow and be heated to be eddy heating for heating.
2, be to adopt atomization 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 working medium exists, in the working medium import of parabola groove Accumulated Heat Units and light-condensing array, selectively increase the atomising devices such as atomizer (3), gas bag (4), gasifying pot (5) or Jet injector (7), utilize these devices to produce atomized steam, utilization contains " vapour " gas and completes the heat conduction.
3, atomization flash-evaporation tank (9) is set, produces by the saturation vapour flash distillation low-pressure saturated steam that the heat generating needs, this measure not only can substitute conventional heat exchanger, can reduce the heat exchange loss simultaneously.
4, the parabola groove light-condensing array is divided into saturated vapour generation array and superheated vapor generation array, and atomization flash-evaporation tank (9) is placed in the middle of two arrays.Transfer line drives the generator set generating by saturated vapour and superheated vapor access heat power machine (10) respectively.
5, adopt the fused salt heat-storage technology, complete heat accumulation and heat release by heat storage can (12) and heat exchanger (13), take into account simultaneously Preheating unit import vapour-liquid, be beneficial to the stable startup of second day Accumulated Heat Units.
6, for guaranteeing, in the situation that raising, instantaneous pressure stablizes output saturation steam or superheated vapor, between atomization flash-evaporation tank (9) and condenser (11), increase a pressure controlled valve (8), play bypass and regulate the effect of instantaneous pressure, overcome the drawback that gas pressure in the DSG technology is difficult to regulation 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 tank (9) flash distillation, the saturated vapour produced directly enters 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 tanks (9) are set after the parabola groove light-condensing array, bears saturated atomization flash-evaporation task for one, and another bears superheating atomizing flash distillation task; At first the high temperature gas flow that adds thermosetting through the parabola groove light-condensing array enters saturated atomization flash-evaporation tank, and the saturated air of generation enters the superheating atomizing flash drum, and the superheated vapor of formation drives heat power machine (10) and drives the generator generating.
Claims (2)
1. groove type solar atomization flash-evaporation heat generating system device is comprised of parabola groove light-condensing array, linear focusing strengthening heat collecting pipe, atomized steam working medium, atomizer, gasifying pot, atomization flash-evaporation tank, drum, pressure pump, Jet injector, water pump, pressure controlled valve, heat power machine, heat storage can, heat exchanger, condenser, modulating valve, transfer line, it is characterized in that:
1) parabola groove light-condensing array front end arranges atomizer, the atomizer connecting line focuses on the import of strengthening heat collecting pipe, the outlet of linear focusing strengthening heat collecting pipe connects the drum import, and one of them outlet of drum connects heat power machine low voltage terminal, connects simultaneously next parabola groove light-condensing array to produce superheated vapor; The parabola groove light-condensing array outlet that produces superheated vapor connects heat power machine high voltage terminal, connects simultaneously the exhaust steam heat exchange of heat power machine and 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 entrance, and atomizer outlet connecting line focuses on the import of strengthening heat collecting pipe, finally forms the complete Lang Ken circulatory system; Another outlet Bonding pressure control valve of drum is to condenser one end and atomizer water delivery import; Pressure pump, condenser and water pump standard equipment reasonable disposition are in circulation system;
2) described atomized steam working medium is that water is sprayed to the empty vapour of generation and the suspensible atomized steam drop that water molecule is mixed to form 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) metal inner pipe of described linear focusing strengthening heat collecting pipe is to have the annular node of forced heat exchanging function or spiral node, luxuriant bulk wave joint metal inner pipe, can carry the pressure that is greater than 10Mpa;
4) described atomizer is the device that is provided with waterfog head;
5) described gasifying pot arranges waterfog head and the import and export of high temperature steam flow;
6) described drum is provided with the saturated vapour import and export, pressure is regulated outlet, water of condensation outlet;
7) described Jet injector is provided with steam inlet, high temperature steam flow spout, drainage port and accelerating cavity, is arranged in parabola groove optical block array;
8) described pressure pump is vapour pressure pump or hydraulic pamp, and initial transmission pressure mainly is provided, and guarantees that atomized steam produces and in the parabola groove light-condensing array, accelerates to flow;
9) described water pump is recycle pump or the hydraulic pamp of system cools water;
10) described pressure controlled valve is reduction valve or the control valve that can automatically keep with pilot pressure;
11) described heat power machine is steam turbine or screw expansion motor;
12) described heat exchanger is salt vapour or vapour vapour heat exchanger;
13) described heat storage can is the device that heat-retaining mass is deposited, and comprises cold tank and hot tank.
2. groove type solar atomization flash-evaporation heat generating system device is by the parabola groove light-condensing array, linear focusing strengthening heat collecting pipe, atomized steam working medium, atomizer, the atomization flash-evaporation tank, pressure pump, Jet injector, water pump, pressure controlled valve, the heat power machine, heat storage can, heat exchanger, condenser, modulating valve, transfer line forms, it is characterized in that: the atomization flash-evaporation tank is arranged on parabola groove light-condensing array outlet end, the atomization flash-evaporation tank is divided into saturated atomization flash-evaporation tank and superheating atomizing flash drum, two tanks are imported and exported and are connected, another import of two tanks simultaneously connects respectively parabola groove light-condensing array high temperature outlet end, the outlet of superheating atomizing flash drum connects the heat power machine, atomizer one end connects water pump or the pressure pump be connected with condenser, and the other end is arranged on the linear focusing strengthening heat collecting pipe ingress in the parabola groove light-condensing array, gasifying pot or Jet injector are arranged in the parabola groove light-condensing 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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| CN102338050A CN102338050A (en) | 2012-02-01 |
| CN102338050B true CN102338050B (en) | 2013-11-27 |
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| CN102661259B (en) * | 2012-05-03 | 2014-03-12 | 中国华能集团清洁能源技术研究院有限公司 | 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 |
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 |
-
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 |
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