CN108458506A - A kind of solar energy thermal-power-generating solid particle heat dump - Google Patents
A kind of solar energy thermal-power-generating solid particle heat dump Download PDFInfo
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- CN108458506A CN108458506A CN201810148613.8A CN201810148613A CN108458506A CN 108458506 A CN108458506 A CN 108458506A CN 201810148613 A CN201810148613 A CN 201810148613A CN 108458506 A CN108458506 A CN 108458506A
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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
Abstract
A kind of solar energy thermal-power-generating solid particle heat dump, the quartz glass tube bank (1) equipped with solid particle (3) are arranged towards radiant flux (4).Inner thermal insulating layer (2) is located at the backlight side in quartz glass tube bank (1) pipe, and the geometry of adjustment inner thermal insulating layer (2) realizes the variation of solid particle cross section of fluid channel product.External thermal insulation (11) surrounds the periphery of quartz glass tube bank (1), the one side that can be flowed positioned at backward radiation.First solid particle valve (17) is arranged at granule dispenser (15) bottom on quartz glass tube bank (1) top.Being placed at the top of the particle collector (16) of quartz glass tube bank (1) lower part has the second solid particle valve (18).Cryogenic particles storage tank (5) is placed in above granule dispenser (15), and high-temperature particle storage tank (10) is placed in below particle collector (16).Valve is installed between cryogenic particles storage tank (5) and granule dispenser (15) and between particle collector (16) and high-temperature particle storage tank (10).
Description
Technical field
The present invention relates to a kind of solar energy thermal-power-generating heat dump, more particularly to a kind of solid particle heat dump.
Background technology
The heat dump of tower-type solar thermal power generating system is placed in the top of heat absorption tower, and the heliostat to automatically follow on ground is too
Sun accurately projects the reflected light of convergence in heat dump.Heat-transfer fluid can be water, fuse salt, liquid gold in heat dump
Category, air, supercritical carbon dioxide, solid particle etc., the thermal energy that the heat-transfer fluid in heat dump generates after being heated are further
The thermal energy of generating working medium in steam turbine or gas turbine, Stirling-electric hybrid is converted to, generating working medium drives generating set, generates electricity
Energy.Before 2007, the U.S. almost contributes to the installed capacity of global solar heat power generation, about 740MW, later Spain due to
Rate for incorporation into the power network subsidy policy has built up a solar energy thermal-power-generating project more than 50, amounts to 2300MW, becomes the afterloading unit appearance after the U.S.
Measure most countries.The states such as China, France, Germany, Australia, Israel, Chile, Italy also develop too positive
Positive energy hot generation technology.Tower type solar energy thermal power generation technology becomes in solar energy thermal-power-generating and develops comparatively fast in recent years, becomes future
One of major technique of solar energy thermal-power-generating.
There is solid particle bearing temperature height, performance to stablize, the big advantage of specific heat, be followed for driving ultra supercritical steam power
Ring, supercritical CO2Brayton cycle even Gas-steam Combined Cycle provides possibility.In addition solid particle is cheap just
In acquisition, it is easy to store, heat-transfer fluid and heat-storage medium can be used as simultaneously, therefore solid particle heat dump becomes international research
Hot spot.Current solid particle heat absorber is broadly divided into free-falling formula, hinders falling type, rotary kiln formula, fluidized bed type etc. several,
Various solid particle heat dumps have its merits and demerits.
United States Patent (USP) US9732986B2 discloses a kind of porous media and delays solid particle falling speed and enhanced heat exchange
Method, but since the hole of porous media material is smaller, the solid particle of flowing destroys its flowing easily in its interior congestion
Process.European patent EP 2630219A2 discloses a kind of heat absorption fluidizing heat absorption in opaque metal pipe using solid particle
Device can effectively control particle flow and strengthen and absorb heat, but the patent is the indirect heat absorption and heat exchange using metal tube, with tradition
Molten salt thermal absorber principle it is identical, equally exist the thermal stress damage after metal tube uneven heating and local hot spot by scorification
Problem, simultaneously because the unordered flowing of the interior solid particle of pipe, easily causes the abrasion in inner wall of metal tube face, influence making for metal tube
Use the service life.Chinese patent CN102679578A discloses a kind of solid particle heat absorption of the free-falling in quartz glass is restrained
Device, heated particle transfer heat to air in cyclone separator, but have the disadvantage that particle flow velocity is too fast, and single falls warm
Liter is smaller, and particle is transported must will consume great mechanical work with cyclonic separation.Chinese patent CN106524541A discloses one
The solid particle heat dump that the intensive ceramic particle of kind falls in vertical or inclined cylindrical bore under the force of gravity, can
The effective control for realizing particle flow velocity, hot transmit is not strengthened between but having the disadvantage that each duct, backlight side in duct
Grain possibly can not effectively absorb heat.Chinese patent CN105135716A discloses a kind of pipe type solid particle heat absorption with plug-in part
Device, solid particle flow from above to below on pipe inside spin rotation plug-in unit, effectively increase the exposure dwell times of particle, but
It is that disadvantage is that there are the deficiencies that solid particle flow blocks.
Invention content
The purpose of the present invention is overcoming the following disadvantage of the prior art, propose that a kind of solar energy thermal-power-generating is inhaled with solid particle
Hot device：
(1) particles fall excessive velocities in free-falling formula solid particle heat dump, particle Wen Sheng be not high；
(2) there is particle loss in particle flow process in solid particle heat dump；
(3) particle heat absorption additional wasted work mistake when fluidized bed type solid particle heat dump and rotary kiln formula particle heat absorber are run
It is high；
(4) the particle heat absorption of conventional solid particle heat absorber is insufficient；
(5) blocking occurred in falling type solid particle heat dump and obstruction is hindered to destroy.
Solid particle heat dump of the present invention includes quartz glass tube bank, solid particle, inner thermal insulating layer, the storage of low-temperature solid particle
Tank, high-temperature solid particle storage tank, low-temperature solid particle outlet valve, high-temperature solid particle reservoir inlet valve, particle point
Orchestration, particle collector, external thermal insulation, conveyer and screw elevator.Quartz glass tube bank is arranged towards radiant flux；Interior guarantor
Warm layer is located at the backlight side in every quartz glass tube of quartz glass tube bank, the section tubular wall of inner thermal insulating layer and quartz glass tube
It is in close contact, the space in quartz glass tube not contacted with inner thermal insulating layer is for solid particle flow.Solid particle from upper and
Lower flowing, sunlight of the flow region towards projection.Inner thermal insulating layer, will not direct quilt due to the back side positioned at solid particle region
Sunlight irradiates.Granule dispenser is placed in the top of quartz glass tube bank, and the bottom of granule dispenser is equipped with the first solid
Grain valve, the first solid particle valve are located at granule dispenser particle outflux lower part, by adjusting the first solid particle valve
Aperture can control granule dispenser solid particle outflow area, i.e., quartz glass tube bank solid particle inflow area,
Solid particle is set to uniformly flow into quartz glass tube bank.Particle collector is placed in the lower part of quartz glass tube bank, powder collection
Second solid particle valve is installed, the aperture by adjusting the second solid particle valve can control powder collection at the top of device
The particle of device flows into area, that is, regulates and controls the outflow area of solid particle in quartz glass tube bank, solid particle is made equably to flow out
Quartz glass is restrained.Low-temperature solid particle storage tank is placed in the top of granule dispenser.High-temperature solid particle storage tank is placed in particle receipts
The lower section of storage.Low-temperature solid particle outlet valve is mounted between low-temperature solid particle storage tank and granule dispenser, high
Warm solid particle reservoir inlet valve is mounted between particle collector and high-temperature solid particle storage tank.External thermal insulation surrounds quartz
The periphery of glass tube bank, the one side that can be flowed positioned at backward radiation.Two conveyers are respectively arranged in low-temperature solid particle storage tank
Below top and high-temperature solid particle storage tank；Screw elevator is installed between two conveyers.Conveyer is used for conveying solid substance
Particle, screw elevator is for promoting solid particle, to realize particle circulation heat absorption.
The low-temperature solid particle stored in low-temperature solid particle storage tank flows into quartz glass tube beam.Quartz glass is restrained every
The region that inner thermal insulating layer is not filled by root quartz glass tube is the flow channel of solid particle, by adjusting the geometry of inner thermal insulating layer
The variation accumulated along the cross section of fluid channel in solid particle flow direction may be implemented in shape.Inner thermal insulating layer is along solid particle flow side
To geometric cross section be variation, inner thermal insulating layer geometric cross section area be more than along solid particle flow direction solid particle stream
Road sectional area.The cross section of runner of the solid particle on circulating direction y forms minor arc arch with quartz glass inside pipe wall.Solid
The flow channel sectional area S (y) of particle is gradually reduced from up to down along runner direction, the particle thickness in solid particle runner
Degree is minor arc center to the distance at string center, i.e., the described bowed high h (y) of minor arc is also gradually thinning in circulating direction y.Definition
Glass bore is R, a height of h of arch of solid particle inlet bow-shaped cross-section0, H is quartz glass length of tube, then S (y) and h (y)
Expression formula：
Solid particle exports the sagitta h of bow-shaped cross-sectionHIt is approximately 5 times or so of solid particle average diameter d, i.e. hH≈5d；
The sagitta h of solid particle inlet bow-shaped cross-section0No more than the half of quartz glass bore R, i.e. h0≤ R/2 ensures tube wall face
Particle can receive the irradiation of sun optically focused, and k indicates the inclined degree of clinoplain.
Solid particle cross section of fluid channel may also be arranged in addition to tapered arch as tapered annular, tapered sector etc., can also be
Setting slows down the protrusion, recess or the structure for changing flow direction of particle movement on inner thermal insulating layer beveling section.Quartz glass tube
Interior solid particle flow qmWith the first solid particle valve of granule dispenser and the second solid particle valve of particle collector
Aperture and quartz glass tube inlet and outlet the ratio between actual internal area S (H)/S (0) it is related, when adjusting the first of granule dispenser
The aperture of second solid particle valve of solid particle valve and particle collector, when making particle runner standard-sized sheet, solid particle stream
Measure qmIt is only related with S (H)/S (0).S (0) is the sectional area at quartz ampoule solid particle inflow, and S (H) is quartz ampoule solid particle
Sectional area at outflow.
The external thermal insulation surrounds the periphery of quartz glass tube bank, the one side that can be flowed positioned at backward radiation, while also rising
To the effect of fixed quartz glass tube beam, and flowing into, flow out and absorbing heat for the quartz glass interior solid particle of tube bank is not influenced.Heat absorption
Particle afterwards returns to low-temperature solid particle storage tank by conveyer and screw elevator, is again introduced into quartz glass tube bank and absorbs spoke
Penetrating can flow, and so recycle successively, until obtaining ideal high temperature.
Solid particle chemical stability and good fluidity at high temperature, shape can be regular spherical, elliposoidal or its
His shape, diameter range are 100 microns -2 millimeters.Preferred solid particle has silicon-carbide particle, sintered bauxite particle, ceramics
Particle, silica granule etc. can be used single particle size during use and a variety of grain sizes can also be used.In order to improve heat transfer efficiency, Gu
Body particle should select the material with high thermal conductivity.In order to reduce the wear rate of particle, solid particle should have higher
Hardness, but also need to consider and also should not be too large with the abrasion between its transmission pipeline, hardness.It is to enhance solid particle to the sun
The absorption of light and high ambient temperatures particle heat radiation, solid particle should have higher radiation absorption ratio.
The low-temperature solid particle storage tank is for storing low-temperature solid particle.Low-temperature solid particle storage tank is required to full
Sufficient 600-800 DEG C of solid particle memory requirement.Cryogenic particles outlet valve mounted on low-temperature solid particle storage tank lower part
Door and granule dispenser also need the temperature for being resistant to solid particle.High-temperature solid particle storage tank is for storing high-temp solid
Particle, the solid particle after solar energy heating would generally be heated to 800-1100 DEG C of high temperature, be mounted on high-temp solid
The high-temperature particle reservoir inlet valve and particle collector on grain storage tank top are equally resistant to 800-1100 DEG C of high temperature.
Granule dispenser is for evenly distributing and adjusting the solid particle flow restrained into quartz glass, particle collector
For uniform collection and adjust the solid particle flow for flowing out quartz glass and restraining.The entrance of solid particle in quartz glass tube bank
The flow regime of granules in pipe stream is determined with outflow, the flow regime for managing interior solid particle stream has solid stream and rarefied flow two
Kind.The aperture for adjusting the first solid particle valve of granule dispenser and the second solid particle valve of particle collector, to protect
Demonstrate,prove and be full of solid particle in quartz glass tube bundle flow road always during particle flow, due to solid particle continuously flowing into and
It fully absorbs heat during outflow quartz glass tube bank, the heat dump thermal efficiency is higher, solid particle in quartz glass tube bank at this time
Stream is solid stream, and the solid particle flow for flowing in and out quartz glass tube bank is equal.Prevent solid in quartz glass tube bank
Grain stream becomes rarefied flow, solid particle is not filled up in quartz glass tube bank at this time, solid particle flows into quartz glass tube bank
Flow be less than solid particle outflow flow, cause transmission losses, the heat dump thermal efficiency relatively low.
Particle heat absorber of the present invention has the following advantages that：
(1) actual internal area of the solid particle on circulating direction is tapered, therefore solid particle is in the particle runner
Interior falling speed significantly increases solid particle much smaller than the falling speed in the quartz glass tube for being not filled with inner thermal insulating layer
Residence time in quartz glass tube bank, improve the Wen Sheng of solid particle single dropping process；
(2) synchronization, on particle runner the part particle irradiation residence time be more than the lower part particle irradiation residence time,
There is the sufficient time to ensure that pipe inward-bound light side high-temperature particle delivers heat to inner thermal insulating layer side particle by heat transfer and heat radiation；
(3) on sustained height, compared with the particle of pipe inward-bound light side, inner thermal insulating layer side particle is restrained away from quartz glass and is exported
Farther, inner thermal insulating layer side particles fall speed is less than the falling speed of pipe inward-bound light side high-temperature particle, in addition, pipe inward-bound light side is high
Warm particle falls in runner can delay inner thermal insulating layer side particle falling speed in runner, therefore be conducive to inner thermal insulating layer side
Grain heat absorption；
(4) without hindrance object in particle runner, granules in pipe block possibility and substantially reduce；
(5) solid particle flow track is controllable in dropping process, not by external environment influence, no particle loss；
(6) flow of solid particle is adjustable in dropping process, can adapt to the fluctuation of external radiation energy intensity of flow；
(7) quartz glass tube has good translucency, and solid particle directly absorbs heat in dropping process, can bear high-strength
Spend radiant flux.
The course of work of the present invention is as follows：
The optically focused radiant flux collected through concentrating device is projected to the outer surface of quartz glass tube bank, fewer parts optically focused spoke
It penetrates to flow and is reflected and absorbed, most optically focused radiant fluxes enter quartz glass via the outer surface that quartz glass is restrained
Tube bank is internal, and restraining the interior pipe inward-bound light side solid particles to fall by quartz glass absorbs, and optically focused radiation energy is converted into pipe
To the thermal energy of light side solid particle, the solid particle temperature of pipe inward-bound light side increases.Simultaneously because being in close contact between particle, manage
Inward-bound light side high-temperature particle transfers heat to inner thermal insulating layer side particle by way of heat transfer and heat radiation.Due to particle
Diameter is smaller, between diameter range is 100 microns -2 millimeters, therefore particle and quartz glass pipe internal surface and particle and particle
Between contact area it is larger, be conducive to the heat transfer between the heat absorption and particle of particle.
Open low-temperature solid particle outlet valve, the work of the low-temperature solid particle of low-temperature solid particle storage tank in gravity
With lower inflow granule dispenser, the aperture of the first solid particle valve by adjusting solid particle dispenser bottom, control is admittedly
The sectional area size of body particle outlet makes low-temperature solid particle uniformly flow into quartz glass tube bank.By adjusting solid
The aperture of the second solid particle valve at the top of grain collector, controls the sectional area size of solid particle inlet, to control
The amount flowed out in grain quartz glass tube bank, until the solid particle to fall is empty full of quartz glass tube bank internal pore
Between.Then the second solid particle valve opening at the top of particle collector is adjusted according to input radiant flux, determines quartz glass tube
The flow of solid particle in beam.The second solid particle valve opening in granule dispenser and particle collector is adjusted respectively, is ensured
The solid particle flow that quartz glass tube bank is flowed in and out in endothermic process is equal, and solid particle fills up quartz glass always
Tube bank, particle flow are in intensive state.Adjust simultaneously granule dispenser the first solid particle valve and particle collector the
The aperture of two solid particle valves, thus it is possible to vary the flow of solid particle in quartz glass tube bank.Due to the property of particle heat absorber
Solid particle flow is related in capable of being restrained to quartz glass, therefore adjusts the first solid particle valve and particle of granule dispenser
The aperture of second solid particle valve of collector, can obtain ideal heat dump performance.Pass through the first of granule dispenser
The cooperation of second solid particle valve of Solid-state valve and particle collector is adjusted, in conjunction with the flowing of gravity and solid particle
Process may be implemented accurately to regulate and control the solid particle flow in every group of quartz glass tube, be adapted to the wave of solar energy
It is dynamic, under the conditions of different optically focused, obtain stable solid particle outlet temperature.Solid particle does not arrhea inside quartz glass tube
It is dynamic, there is certain cooling effect to quartz glass tube wall, quartz glass tube reliability of operation in use can be promoted
And safety.It is lighter to the abrasion of quartz glass tube internal face due to slow whereabouts of the solid particle in quartz glass tube.
By quartz glass tube bank bottom outflow after solid particle heat absorption, into high-temperature solid particle storage tank.If solid particle
Fail to reach predetermined temperature in single dropping process, this fraction solids particle can be delivered back by conveyer and screw elevator
Low-temperature solid particle storage tank again flows into quartz glass tube bank and absorbs optically focused radiant flux.Above step is repeated to solid particle
It recycles, until solid particle reaches ideal high temperature and stored in high-temperature solid particle storage tank.
The configuration of the present invention is simple, can design the diameter of solid particle as desired, while can adjust quartz glass
The structure for restraining inner thermal insulating layer, may be implemented the efficient absorption of input optically focused radiant flux, and solid particle temperature may be implemented
Maximization.
Description of the drawings
Fig. 1 is a kind of solar energy thermal-power-generating solid particle heat dump schematic diagram of the present invention；
Fig. 2 a are that the single quartz glass tube of the present invention fills the vertical view of inner thermal insulating layer；
Fig. 2 b are that the single quartz glass tube of the present invention fills the left view of inner thermal insulating layer；
Fig. 2 c are that the single quartz glass tube of the present invention fills the front view of inner thermal insulating layer；
Fig. 3 a are that the external thermal insulation of the present invention surrounds the vertical view of single quartz glass tube；
Fig. 3 b are that the external thermal insulation of the present invention surrounds the left view of single quartz glass tube；
Fig. 3 c are that the external thermal insulation of the present invention surrounds the front view of single quartz glass tube；
Fig. 4 a are that the external thermal insulation of the present invention surrounds the vertical view of quartz glass tube bank；
Fig. 4 b are that the external thermal insulation of the present invention surrounds the left view of quartz glass tube bank；
Fig. 4 c are that the external thermal insulation of the present invention surrounds the front view of quartz glass tube bank；
Fig. 5 is the granule dispenser schematic diagram of the present invention；
Fig. 6 is the particle collector schematic diagram of the present invention.
Specific implementation mode
It further illustrates the present invention with reference to the accompanying drawings and detailed description.
As shown in Figure 1, solid particle heat dump of the present invention include quartz glass tube bank 1, inner thermal insulating layer 2, solid particle 3,
Cryogenic particles storage tank 5, cryogenic particles outlet valve 7, high-temperature particle reservoir inlet valve 8, high-temperature particle storage tank 10, outer guarantor
Warm layer 11, screw elevator 12, conveyer 13,14, granule dispenser 15 and particle collector 16.；Quartz glass tube bank 1 towards
Radiant flux 4 is arranged.Inner thermal insulating layer 2 is located at backlight side in the quartz glass tube of quartz glass tube bank 1；Solid particle 3 is mounted in stone
In English glass tube bank 1；External thermal insulation 11 surrounds the periphery of quartz glass tube bank 1, the one side that can be flowed positioned at backward radiation；Particle point
Orchestration 15 is placed in the top of quartz glass tube bank 1, and the first solid particle valve 17 is arranged in the bottom of granule dispenser 15；Particle is received
Storage 16 is placed in the lower part of quartz glass tube bank 1, and the second solid particle valve 18 is arranged in the top of particle collector 16.Low temperature
Grain storage tank 5 is placed in the top of granule dispenser 15；High-temperature particle storage tank 10 is placed in the lower section of particle collector 16.Cryogenic particles are stored up
Tank outlet valve 7 is mounted between cryogenic particles storage tank 5 and granule dispenser 15；High-temperature particle reservoir inlet valve 8 is mounted on
Between particle collector 16 and high-temperature particle storage tank 10.Conveyer 13 is mounted on the top of cryogenic particles storage tank 5；Conveyer 14 is pacified
Mounted in the top of high-temperature particle storage tank 10.Screw elevator 12 is mounted between the first conveyer 13 and second conveyor 14.It is low
Warm solid particle 6 is stored in cryogenic particles storage tank 5, and high-temperature solid particle 9 is stored in high-temperature particle storage tank 10.
Before operation, sufficient amount of low-temperature solid particle 6 is had been filled in cryogenic particles storage tank 5.When work, particle point is adjusted
The aperture of the second solid particle valve 17 at 16 top of the first solid particle valve 17 and particle collector of 15 bottom of orchestration, is protected
Card solid particle 3 is continuously flowed into and flows out quartz glass tube bank 1, completes endothermic process.Low-temperature solid particle 6 becomes after absorbing heat
High-temperature solid particle 9 stores in high-temperature particle storage tank 10.To continuously it be consolidated by conveyer 13,14 and screw elevator 12
Body particle transports the endothermic process for completing solid particle from bottom to top, until solid particle reaches higher temperature.
As shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, inner thermal insulating layer, interior guarantor are filled in the quartz glass tube of quartz glass tube bank 1
Warm layer 2 is in close contact with a part of tube wall in quartz glass tube.The sky in quartz glass tube not contacted with inner thermal insulating layer
Between be solid particle flow channel, flowed from above to below for solid particle, the sun of the solid particle flow region towards projection
Light.Inner thermal insulating layer is located at the back side in solid particle region, will not directly be sunlighted.Storage in low-temperature solid particle storage tank
Low-temperature solid particle flow into quartz glass tube beam.It is not filled by inner thermal insulating layer in every quartz glass tube of quartz glass tube bank
Region is the flow channel of solid particle, be may be implemented along solid particle flow side by adjusting the geometry of inner thermal insulating layer
To cross section of fluid channel accumulate variation.Inner thermal insulating layer is variation, inner thermal insulating layer along the geometric cross section in solid particle flow direction
The area of geometric cross section is more than to be accumulated along the solid particle cross section of fluid channel in solid particle flow direction.Solid particle is in circulating direction
The cross section of runner on y forms minor arc arch with quartz glass inside pipe wall.The edges flow channel sectional area S (y) of solid particle
Runner direction to be gradually reduced from up to down, the particle layer thickness in solid particle runner be minor arc center to string center away from
From that is, described bowed high h (y) of minor arc is also gradually thinning in circulating direction y.To ensure the solid particle bow tapered in area
Radiant flux is fully absorbed in shape runner in slow dropping process, solid particle exports the sagitta h of bow-shaped cross-sectionHAbout solid
5 times of average diameter of particles d, i.e. hH≈5d；The arch h of solid particle inlet bow-shaped cross-section0No more than quartz glass bore
Half, i.e. h0≤R/2.As the sagitta h of bottom surface bow-shaped cross-sectionHWhen less than 4 times of solid particle average diameter d, i.e. hH＜
4d may cause granules in pipe to block；As the sagitta h of bottom surface bow-shaped cross-sectionHLess than 12 times of solid particle average diameter d
When, i.e. hH＜ 12d, granules in pipe falling speed are too fast.
As shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, the external thermal insulation 11 surrounds the periphery of quartz glass tube bank 1, is located at the back of the body
To the one side of radiant flux, to reduce radiation loss, while the effect of fixed quartz glass tube beam 1 is also functioned to, and do not influence stone
Solid particle flows into, flows out and absorbs heat in English glass tube bank 1.
As shown in Fig. 4 a, Fig. 4 b and Fig. 4 c, represented by more quartz glass tubes with three quartz glass tubes arranged in parallel
The quartz glass of composition is restrained, and when required high-temperature solid particle reaches certain amount, heat dump is flat using more quartz glass tubes
Row is arranged, at regular intervals between quartz glass tube, ensures that the solid particle of pipe inward-bound light side can absorb radiant flux.Root
Choose suitable spacing according to required endothermic heat demand, the arrangement mode of quartz glass tube bank can also be staggered, circular arc row
Row etc..
As shown in figure 5, the top of quartz glass tube bank 1 is mounted in the hole of 15 bottom of granule dispenser, particle distribution
The aperture of 15 bottom hole of device and the outer diameter of quartz glass tube are equal.First solid particle valve 17 is located at quartz glass tube bank 1
Top.The opening size of first solid particle valve 17 influences solid particle and enters the solid that quartz glass restrains 1 import
The inflow area of grain.
As shown in fig. 6, the lower part of quartz glass tube bank 1 is mounted in the hole at 16 top of particle collector, particle distribution
The aperture of 16 top hole of device and the outer diameter of quartz glass tube are equal.Second solid particle valve 18 is located at quartz glass tube bank 1
Lower section.When work, the opening size of the second solid particle valve 18 influences 1 outlet of solid particle outflow quartz glass tube bank admittedly
The outflow area of body particle.
Claims (4)
1. a kind of solar energy thermal-power-generating solid particle heat dump, it is characterised in that：The particle heat absorber includes quartz glass
Restrain (1), inner thermal insulating layer (2), solid particle (3), cryogenic particles storage tank (5), cryogenic particles outlet valve (7), high temperature
Particle reservoir inlet valve (8), high-temperature particle storage tank (10), external thermal insulation (11), screw elevator (12), conveyer (13,
14), granule dispenser (15) and particle collector (16)；Quartz glass is restrained (1) and is arranged towards radiant flux (4)；Inside holding
Layer (2) is located at the backlight side in quartz glass tube bank (1) pipe；Solid particle (3) is in quartz glass tube bank (1)；External thermal insulation
Layer (11) surrounds the periphery of quartz glass tube bank (1), the one side that can be flowed positioned at backward radiation；Granule dispenser (15) is placed in quartz
Glass restrains the top of (1), and the first solid particle valve (17) is arranged in the bottom of granule dispenser (15)；Particle collector (16)
It is placed in the lower part of quartz glass tube bank (1), the second solid particle valve (18) is arranged in the top of particle collector (16)；Low temperature
Grain storage tank (5) is placed in the top of granule dispenser (15)；High-temperature particle storage tank (10) is placed in the lower section of particle collector (16)；It is low
Warm particle outlet valve (7) is mounted between cryogenic particles storage tank (5) and granule dispenser (15)；High-temperature particle storage tank enters
Mouth valve (8) is mounted between particle collector (16) and high-temperature particle storage tank (10)；Conveyer (13) is mounted on cryogenic particles
The top of storage tank (5)；Conveyer (14) is mounted on the top of high-temperature particle storage tank (10)；Screw elevator (12) is mounted on first
Between conveyer (13) and second conveyor (14)；Low-temperature solid particle (6) is stored in cryogenic particles storage tank (5), and high temperature is solid
Body particle (9) is stored in high-temperature particle storage tank (10).
2. a kind of solar energy thermal-power-generating solid particle heat dump described in accordance with the claim 1, it is characterised in that：Described is interior
Insulating layer (2) is in close contact with a part of tube wall in quartz glass tube, the quartz glass tube not contacted with inner thermal insulating layer (2)
Interior space is the flow channel of solid particle, sunlight of the solid particle flow region towards projection；Inner thermal insulating layer (2) is located at
The back side in solid particle region；The stream along solid particle flow direction is realized by adjusting the geometry of inner thermal insulating layer (2)
The variation of road sectional area.
3. a kind of solar energy thermal-power-generating solid particle heat dump according to claim 2, it is characterised in that：Described is interior
Insulating layer (2) is variation along the geometric cross section in solid particle flow direction, and geometric cross section area is more than along solid
The solid particle cross section of fluid channel product of grain flow direction.
4. according to a kind of solar energy thermal-power-generating solid particle heat dump according to claim 2 or 3, it is characterised in that：It is described
The cross section of runner of the solid particle on circulating direction y form minor arc arch with quartz glass inside pipe wall；Solid particle
Flow channel sectional area S (y) is gradually reduced from up to down along runner direction, and the particle layer thickness in solid particle runner is bad
To the distance at string center, i.e., the described bowed high h (y) of minor arc is also gradually thinning along circulating direction y at arc center；Define glass tube
Internal diameter is R, the sagitta h of solid particle inlet bow-shaped cross-section0, the inclined degree of k expression clinoplains, H is quartz glass tube
Length, then the flow channel sectional area S (y) of solid particle and minor arc sagitta h (y) expression formula are：
Solid particle exports the sagitta h of bow-shaped cross-sectionHIt is approximately 5 times of solid particle average diameter d, i.e. hH≈5d；Solid particle
The sagitta of entrance bow-shaped cross-section is not more than the half of quartz glass bore R, i.e. h0≤R/2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148613.8A CN108458506B (en) | 2018-02-13 | 2018-02-13 | Solid particle heat absorber for solar thermal power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148613.8A CN108458506B (en) | 2018-02-13 | 2018-02-13 | Solid particle heat absorber for solar thermal power generation |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668341A (en) * | 2018-12-26 | 2019-04-23 | 中国科学院电工研究所 | A kind of multistage solid particle heat dump of tower type solar energy thermal power generation |
| CN110017618A (en) * | 2019-04-17 | 2019-07-16 | 国网节能服务有限公司 | A kind of descending manner variable cross-section solar energy solid particle heat absorber |
| CN110822743A (en) * | 2019-11-20 | 2020-02-21 | 哈尔滨工业大学 | Continuous heat storage system based on photo-thermal moving bed |
| CN110873470A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Particle heat absorber, heat absorption system comprising same and solar thermal power generation system |
| CN110873472A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Particle heat absorber, heat absorbing system comprising same and solar thermal power generation system |
| CN110873471A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Heat absorption system and solar thermal power generation system |
| CN110986389A (en) * | 2019-11-28 | 2020-04-10 | 中国科学院电工研究所 | Quartz glass tube solar heat absorber with insert |
| CN111075668A (en) * | 2019-12-06 | 2020-04-28 | 中国科学院电工研究所 | Utilize electricity storage system of solid particle heat-retaining |
| CN113390190A (en) * | 2021-07-14 | 2021-09-14 | 吉林建筑大学 | Secondary reflection type particle heat absorber |
| CN114353566A (en) * | 2021-12-22 | 2022-04-15 | 浙江高晟光热发电技术研究院有限公司 | Particle heat exchange device with conveying function |
| CN114576874A (en) * | 2022-03-08 | 2022-06-03 | 中国科学院电工研究所 | Solid particle heat absorber filled with special-shaped ceramic tubes and used for solar thermal power generation |
| CN115013988A (en) * | 2022-05-27 | 2022-09-06 | 武汉理工大学 | Heat absorption pipe and solar heat absorber |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110873470B (en) * | 2018-08-29 | 2021-11-23 | 浙江可胜技术股份有限公司 | Particle heat absorber, heat absorption system comprising same and solar thermal power generation system |
| CN110873470A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Particle heat absorber, heat absorption system comprising same and solar thermal power generation system |
| CN110873472A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Particle heat absorber, heat absorbing system comprising same and solar thermal power generation system |
| CN110873471A (en) * | 2018-08-29 | 2020-03-10 | 浙江中控太阳能技术有限公司 | Heat absorption system and solar thermal power generation system |
| CN110873471B (en) * | 2018-08-29 | 2021-11-19 | 浙江可胜技术股份有限公司 | Heat absorption system and solar thermal power generation system |
| CN110873472B (en) * | 2018-08-29 | 2021-11-23 | 浙江可胜技术股份有限公司 | Particle heat absorber, heat absorbing system comprising same and solar thermal power generation system |
| CN109668341A (en) * | 2018-12-26 | 2019-04-23 | 中国科学院电工研究所 | A kind of multistage solid particle heat dump of tower type solar energy thermal power generation |
| CN110017618A (en) * | 2019-04-17 | 2019-07-16 | 国网节能服务有限公司 | A kind of descending manner variable cross-section solar energy solid particle heat absorber |
| CN110822743A (en) * | 2019-11-20 | 2020-02-21 | 哈尔滨工业大学 | Continuous heat storage system based on photo-thermal moving bed |
| CN110986389A (en) * | 2019-11-28 | 2020-04-10 | 中国科学院电工研究所 | Quartz glass tube solar heat absorber with insert |
| CN111075668A (en) * | 2019-12-06 | 2020-04-28 | 中国科学院电工研究所 | Utilize electricity storage system of solid particle heat-retaining |
| CN113390190A (en) * | 2021-07-14 | 2021-09-14 | 吉林建筑大学 | Secondary reflection type particle heat absorber |
| CN113390190B (en) * | 2021-07-14 | 2022-06-21 | 吉林建筑大学 | Secondary reflection type particle heat absorber |
| CN114353566A (en) * | 2021-12-22 | 2022-04-15 | 浙江高晟光热发电技术研究院有限公司 | Particle heat exchange device with conveying function |
| CN114353566B (en) * | 2021-12-22 | 2023-11-24 | 浙江高晟光热发电技术研究院有限公司 | Particle heat exchange device with conveying function |
| CN114576874A (en) * | 2022-03-08 | 2022-06-03 | 中国科学院电工研究所 | Solid particle heat absorber filled with special-shaped ceramic tubes and used for solar thermal power generation |
| CN114576874B (en) * | 2022-03-08 | 2023-10-31 | 中国科学院电工研究所 | Solid particle heat absorber filled with special-shaped ceramic tubes and used for solar thermal power generation |
| CN115013988A (en) * | 2022-05-27 | 2022-09-06 | 武汉理工大学 | Heat absorption pipe and solar heat absorber |
| CN115013988B (en) * | 2022-05-27 | 2023-11-14 | 武汉理工大学 | Heat absorption pipe and solar heat absorber |
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