CN101424785B - Optical energy collection and perfect reflection optical energy transmission system - Google Patents
Optical energy collection and perfect reflection optical energy transmission system Download PDFInfo
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- CN101424785B CN101424785B CN2008100465107A CN200810046510A CN101424785B CN 101424785 B CN101424785 B CN 101424785B CN 2008100465107 A CN2008100465107 A CN 2008100465107A CN 200810046510 A CN200810046510 A CN 200810046510A CN 101424785 B CN101424785 B CN 101424785B
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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
- Y02E10/47—Mountings or tracking
Abstract
A light energy collection and full reflecting light energy transmission system belongs to a solar energy collection and transmission device and comprises a concave collecting mirror, wherein the focal position of the concave collecting mirror is provided with a light energy density multiplier through a positioning bracket; the cylindrical light output end of the light energy density multiplier is connected with a full reflecting light transmission rod which is connected with a soft light transmission pipe; the light transmission pipe transmits light energy to using points; the light energy density multiplier is composed of a light energy density multiplication convex lens, a lens positioning body, a coat, a light transmission direction regulation convex lens or a light transmission regulation concave lens and a light transmission output end. The light energy collection and full reflecting light energy transmission system utilizes the full reflecting broadcasting principle of light in media to realize solar energy density multiplication and low-loss transmission of energy and expands the application field of the technology.
Description
Technical field
The present invention collects and total reflection luminous energy transmission system for luminous energy, belongs to the collection of optical tech application, particularly solar energy and the transmission system of luminous energy.
Background technology
Sun power is a kind of never exhausted clean energy resource, solar radiation is by behind the atmosphere, being distributed in more than 99% between wavelength 0.15 μ m～4.0 μ m of solar radiation energy, and concentrate on wavelength 0.4 μ m-2 mum wavelength scope more than 90%, about 40% in the visible range, at infrared spectral region about 60%.The solar cooker of extensively having promoted the use of at present adopts concave mirror or lens focus method focusing sunlight, but owing to must take energy at the focus place of concave mirror, the collection area of concave mirror can not be made very greatly, is affected otherwise use.Another shortcoming of this technology is can only use separately to connect, and focus energy density is low, can not promote in the less place of solar irradiation energy density.If can realize multiplication of solar energy density and high efficiency of transmission, will greatly expand the application of sun power.
The long Distance Transmission that realizes light beam is well-known mature technology.In the optical communication field, with SiO
2Material is the optical fiber of principal ingredient, is operated in the near-infrared band of 0.8 μ m-1.6 μ m, and the minimum theoretical loss that present technology can reach is 0.16dB/km (when optical loss is 0.2dB/km, being equivalent to 50% optical loss) at 1550nm wavelength place.Aspect the optical fiber transmission technique of high-energy-density light, the example of having realized commercial Application is the superlaser solder technology, is used for the welding of hardware with fibre bundle transmission laser energy, for example, and the high-energy metals laser welder that Germany produces.Document (optical fiber manufacturing and application collection of thesis, optical precision optical machinery editorial office edits and publishes, and in September, 1986, p16 Figure 10) introduces, with the SiO of axial precipitation method preparation
2Optical fiber, at 0.6 μ m-1.0 mu m waveband scope and 1.8 μ m-2.0 mu m waveband scope optical losss less than 8dB/km, in the loss of 1.8 μ m-2.0 mu m waveband scope light then less than 1dB/km.Therefore, as long as SiO
2Transition metal impurity Fe for example in the material
2+And OH
-Controlled etc. the infrared Absorption impurity content, the all-wave solar energy of high-energy-density can be realized by the optical transport technology that is similar to optical fiber.
Aspect the optical energy density conversion, adopt Fresnel Fresnel lens group, lens or concave mirror combined method usually.Aspect the transmission of luminous energy, mainly adopt film reflection and medium total reflection principle.
Utility model patent (ZL patent No. 02207211.X) adopts Fresnel Fresnel lens combined method and concave mirror combination with the inlet of solar light focusing to reflecting light tube, and delivers to the use point by reflecting light tube.Publication number is the patent of CN101270921, utilize the refraction of concavees lens, convex lens, reflective surface and reflective prism, catoptrical principle, with they be separately positioned on solar collecting device light harvesting head, conduction device end getting in the light threeway in a light harvesting threeway, light casing coupling and the power supply device, the luminous energy that makes collection along the session that is provided with in operative installations.Publication number is the patent of CN1847741, discloses a kind of large-area sun power burst to be converged, and is transferred in the various rooms such as factory building, puts together the method and system that is used again; On each sunlight collecting device in the system reflective mirror and sunlight sensor are arranged; The reflective mirror sunlight reflected converges in the beam duct through after the concavees lens refraction, through the continuous reflection of reflective membrane, is transferred to the other end in the room in beam duct.The principle that utility model patent (the ZL patent No. 200710063059.5) adopts parabolic concentrator and the reflection of cylindrical lens reflecting surface has realized the conversion of parallel beam energy density.Above-mentioned patent all relates to the film reflection of light.The shortcoming that film reflects this method is that light must just can be delivered to the use point by repeatedly reflecting.Data (optical element factory of Chengdu torch section product description, P2) introduce, though the very high silverskin of reflection efficiency in long-wave band reflection of light rate greater than 98%, because light is through the repeatedly stack of the loss of reflection, total optical energy loss is bigger, is impractical in length and transmits apart from luminous energy.
Utility model patent (the ZL patent No. 200420017316.3) is according to the optical-fibre communications principle, and the focus place that directly optical fiber is placed on solar-energy light collector directly sends solar energy into accumulator.Application number is the patent of CN1955613 (solar fibre-optical conduction energy collection array), is made of condenser, fibre bundle, light-receiving device and pedestal etc., also is that the sunshine that a plurality of condensers are assembled projects on the same absorber one by one through fibre bundle.Though this optical fiber tranmission techniques principle is feasible, but only be incident on the optical fiber light core, and the light that incident angle satisfies the total reflection condition of light could pass through spread fiber, to do not propagated and be incident on the light that fibrous bundle gap location and incident angle do not satisfy total reflection condition, the light transmitting fiber so considerable part light is escaped out the most at last, the transfer efficiency of luminous energy is lower.
At present, from concave mirror (or convex lens) focal position the solar energy that focuses on is transferred to the use point and mainly contains reflective pipe and the total reflection optical fiber bundle transmission technology lost.The transmission that the reflective shortcoming of losing Manifold technology is a light need could be sent to the light at beam condensing unit focus place the use point by the repeatedly reflection of optical reflection film, the repeatedly reflection of reflectorized material can cause a large amount of luminous energy energy losses, and the once light reflection loss meeting that bibliographical information aluminium film, silverskin are for example arranged is greater than 2%.Therefore, this circulation way only is applicable to short-range propagation.Need to solve the energy loss problem in the transmission course.The fibre bundle transmission technology can directly be transferred to the use point with light from focus.But if directly transmit with the ordinary optic fibre bundle, not only position, space light can not pass through spread fiber between the optical fiber, and can exist quite a few light may not satisfy optical fiber light total reflection propagation conditions, particularly all the more so when the beam condensing unit poor-performing.Because, according to the total reflection communication theory of light in medium, when having only incident angle when incident light, just satisfy the condition of total reflection greater than angle of total reflection C, derive incident angle easily and must satisfy:
Wherein n is the refractive index of material, and i is the angle between light and the fiber optic hub line.In addition, solar radiation is by behind the atmosphere, and the energy of solar radiation spectrum is distributed in more than 99% between 0.15 micron～4.0 microns of the wavelength, and concentrates on wavelength 0.4 μ m-2 mum wavelength scope more than 90%.Total reflection transmission theory according to light, in commaterial, the wavelength difference, angle of total reflection difference, therefore, although the light propagation loss of optical fiber is very little, because the effect of dispersion of light, when directly realizing that with fibre bundle light is propagated, be not that the light of all wavelengths of focusing place and the angle of light transmitting fiber central shaft all satisfy total reflection condition.Therefore, have only the direction of propagation of adjusting light, make it satisfy total reflection condition, could realize the high efficiency of transmission of light.Another common drawback of prior art is all to realize the multiplication of optical energy density, and its application is restricted.
Summary of the invention
The purpose of this invention is to provide a kind of luminous energy and collect and total reflection luminous energy transmission system,, realize the low-loss transmission of multiplication of solar energy metric density and energy to utilize concave mirror or convex lens optically focused and the light total reflection propagation principle in medium.
The object of the present invention is achieved like this: a kind of luminous energy is collected and total reflection luminous energy transmission system, comprise the concave surface condenser, be provided with the optical energy density multiplier through locating support on the focal position of concave surface condenser, the bar shape light output end of optical energy density multiplier is connected with the total reflection light transfer rod, the total reflection light transfer rod connects flexible optical transmission tube again, and the latter is delivered to the use point with luminous energy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: 1, in order to realize making the multiplication of the energy that beam condensing unit focuses on, the present invention utilizes convex lens optically focused principle, be placed on the focus front of concave mirror with optically focused convex lens, the light beam that will focus on focuses on once more earlier, makes it to be converted to the higher light beam of a branch of energy density; 2, for make all the sunray of line focus all satisfy total reflection condition, the present invention utilizes another optical propagation direction to adjust convex lens (or concavees lens) and adjusts optical propagation direction, make the incident angle i (angle of incident ray and light transmission rods center line) of the sunray of focusing as much as possible little, thereby make all light can both satisfy the total reflection propagation conditions of light in the light transmission material, thereby overcome light refractive index difference problem in commaterial of different wave length, realize the transmission of the sunshine of wide wavelength coverage; 3, adjust the lens position body that an optical transparency is set between the convex lens at optical energy density multiplication convex lens and optical propagation direction, realize the accurate location of position relation between two lens, double and laser propagation effect with the energy of avoiding relative position variable effect light between lens, and reduced air interface reflections as much as possible; Optical communication means such as the made convex lens that 4, the selective light transmission loss (TL) is little, light transmission bundle, light transmission rods and lens position body, for example, make optical communication means such as convex lens with the communication optical fiber level high-purity silicon dioxide that mixes, can reduce the energy loss of optical transmission process.In high-purity silicon dioxide and doping silicon dioxide made process, control other impurity contents, particularly transition metal impurity (Fe for example by strictness
2+Deng) and OH
-1In ppm order of magnitude level, effectively reduce the transmission loss of light; 5, adopt the universal property adjustment of optical transmission direction in the flexible light transmission Shu Shixian optical transmission process, solve the beam condensing unit tracking sun and luminous energy and between different use devices, change when using, satisfy the universal property of optical transmission direction and adjust requirement.
The invention has the beneficial effects as follows:
1, realized making the multiplication of the energy density that the sunshine beam condensing unit focuses on, make full use of light total reflection light principle simultaneously, optical communication means such as convex lens, light transmission bundle, light transmission rods and lens position body have been designed, effectively reduce the energy loss of optical transmission process, realized the low-loss transmission of luminous energy.
2, luminous energy transmission system of the present invention (being made up of various optical components) design science is reasonable, simple in structure.
The present invention has expanded the application of heliotechnics, has widened the application region of heliotechnics.
The present invention has successfully solved sun power and can density double and the effective transmission technique problem, make concave surface condenser area no longer as common solar cooker condenser, be restricted, the gross energy that focuses on improves greatly, does not need outdoor operation, has increased the use fate of solar cooker.Can also provide the energy for other sun power utilizes device, improve the comprehensive utilization ratio of sun power.
Characteristics of the present invention and advantage will further be set forth in follow-up instantiation.
Description of drawings
Fig. 1 is the structural representation of luminous energy collection of the present invention and total reflection transmission system;
Fig. 2 is that the structure and the focused light of optical energy density multiplier shown in Figure 1 launched the synoptic diagram of propagating therein entirely;
Fig. 3 is the structure of another example example of optical energy density multiplier shown in Figure 1 and the synoptic diagram that focused light total reflection is therein propagated;
Fig. 4 is the structure of light output end shown in Figure 2 and the energy multiplication synoptic diagram of light;
Fig. 5 is the structure of light output end shown in Figure 3 and the energy multiplication synoptic diagram of light;
Fig. 6 is that synoptic diagram is propagated in the structure and the light total reflection therein of total reflection light transfer rod shown in Figure 1;
Fig. 7 is the structural representation that the light of flexibility shown in Figure 1 is propagated pipe;
Fig. 8 is the directional light synoptic diagram (use of can repeatedly connecting) that total reflection is propagated in optical energy density multiplier shown in Figure 2;
Fig. 9 is the directional light synoptic diagram (use of can repeatedly connecting) that total reflection is propagated in optical energy density multiplier shown in Figure 3;
Figure 10 is the structural representation of another embodiment of optical energy density multiplier shown in Figure 1;
Figure 11 be in the inner sunken face of optical receiving end shown in Figure 10 each root light transmitting fiber to the reception synoptic diagram of directional light or focused light;
The synoptic diagram that energy density increased when Figure 12 was a parallel rays shown in Figure 10 by the light transmitting fiber of reducing;
Figure 13 is that the maximum angle of incident light and fibre-optic central shaft is the fibre-optic propagation synoptic diagram of the low-angle light of a by reducing.
Embodiment
Structure of apparatus of the present invention and function for convenience of description now are applied as the example explanation with the present invention on the concave surface beam condensing unit.As shown in Figure 1, indication luminous energy of the present invention is collected with total reflection luminous energy transmission system and mainly is made of concave surface condenser 1, locating support 2, optical energy density multiplier 3, total reflection light transfer rod 4 and flexible optical transmission tube 5 etc.Be provided with optical energy density multiplier 3 through locating support 2 on the focal position of concave surface condenser 1, the bar shape light output end of optical energy density multiplier 3 is connected with total reflection light transfer rod 4, the total reflection light transfer rod connects flexible optical transmission tube 5 again, and the latter is delivered to the use point with luminous energy.The light output end of optical energy density multiplier 3, total reflection light transfer rod 4 and optical transmission tube 5 threes' diameter is identical, and the former fits with the cone of latter's front end face with the bellmouth of end face thereafter and is connected; Optical energy density multiplier 3 can use by plural serial stage.The sunshine that focuses on through the concave surface condenser is converted to the higher light beam of a branch of energy density by the multiplication of the optical energy density in optical energy density multiplier convex lens earlier, is transported to the use point in the total reflection mode through light output end 35, total reflection light transfer rod 4 and the flexible optical transmission tube 5 of luminous energy multiplier 3 again.Wherein, flexible optical transmission tube 5 makes when the concave surface condenser is followed the tracks of sun rotation, can not influence the transmission of luminous energy, and makes the sunshine that focuses on to use conversion easily between the device at different sun power.
Optical energy density multiplier 3 adjusts convex lens 34 (Fig. 2) by optical energy density multiplication convex lens 31, lens position body 32, overcoat 33, optical propagation direction or optical propagation direction is adjusted concavees lens 36 (Fig. 3) and light output end 35 constitutes.Wherein, Fig. 2 is for making the structural representation that optical propagation direction is adjusted the luminous energy multiplier of lens with convex lens, and optical propagation direction is adjusted the focus back of the position of convex lens 34 at optical energy density multiplication convex lens 31.Optical energy density multiplier 3 structures are: the front portion of tapered jacket 33 is provided with optical energy density multiplication convex lens 31, tapered jacket rear portion and the focus back that is positioned at these convex lens 31 are provided with optical propagation direction and adjust convex lens 34, be provided with between two convex lens 31,34 and the two lens position body 32 that coincide, convex lens 34 rear portions also are connected the pyramidal light output end 35 of post, and the primary optical axis of convex lens 34 overlaps with the central shaft of lens position body 32 and light output end 35, and (front and rear portions is meant the priority of light process, among the figure top, down together).It is one that optical energy density multiplication convex lens 31, optical propagation direction are adjusted convex lens 34, lens position body 32 and light output end 35 hot pressing; Described output terminal 35 mainly is made of cone segments 351 and column body segment 352.
Fig. 3 is for making the structural representation that optical propagation direction is adjusted lens time energy doubler with concavees lens, optical propagation direction is adjusted the front of the position of concavees lens 36 in the focus of optical energy density multiplication convex lens 31.Optical energy density multiplier 3 structures are: the front portion of tapered jacket 33 is provided with optical energy density multiplication convex lens 31, the rear portion of tapered jacket and the focus front that is positioned at these convex lens 31 are provided with the adjustment concavees lens 36 that light is propagated, be provided with the lens position body 32 that the two coincide between these convex lens 31 and the concavees lens 36, this concavees lens rear portion also is connected the light output end 35 that bar shape is arranged, and the primary optical axis of concavees lens 36 overlaps with the central shaft of lens position body 32 and light output end 35.Energy density multiplication convex lens 31, optical propagation direction adjust convex lens 34 and optical propagation direction adjustment concavees lens 36 are n by refractive index
1Light transparent materials be prepared from.Lens position body 32 be a two sides band concave (or, the one side indent, the another side evagination) the cylinder cone of sphere, its radius-of-curvature corresponds respectively to the radius-of-curvature that optical energy density multiplication convex lens 32 and optical propagation direction adjustment convex lens 34 or optical propagation direction are adjusted concavees lens 36, is n by refractive index
2Light transparent materials be prepared from.Light output end 35 is a post cone structure, there is a sphere that concaves (or evagination) its upper surface, its radius-of-curvature is corresponding to (linking promptly fits, also we can say and match) optical propagation direction adjusts the radius-of-curvature that convex lens 34 or optical propagation direction are adjusted concavees lens 36, its lower end is a cylinder, and a bellmouth for 4 accesses of light total reflection transfer rod is arranged on the output terminal.The diameter of lower end cylinder is identical with the diameter of total reflection light transfer rod 4, is n by refractive index
2Light transparent materials make and n
1N
2Optical energy density multiplication convex lens 31, lens position body 32, optical propagation direction are adjusted the sphere of convex lens 34 and light output end 35 after surface finish is handled, under set point of temperature and pressure, be hot pressed into one in mould, the overcoat 33 of packing into constitutes luminous energy multiplier 3.Overcoat 33 is the ordinary construction material, be used for optical energy density multiplier 3 and 1 in concave surface condenser the location, be connected.As if the distance between the photocentre of the photocentre of establishing energy density multiplication convex lens 31 and optical propagation direction adjustment convex lens 34 is d
1, the distance between the photocentre that the photocentre of energy density multiplication convex lens 31 and optical propagation direction are adjusted concavees lens 36 is d
2, the focal length that energy density multiplication convex lens 31, optical propagation direction are adjusted convex lens 34 and concavees lens 36 is respectively f
1, f
2And f
3, when design optical energy density multiplier 3, above-mentioned parameter can be by n
1, n
2And calculate according to optical principle.
Fig. 4 is the structure of light output end 35 and the energy multiplication synoptic diagram of light.Mainly constitute by cone segments 351 and column body segment 352.The light that has focused on is after optical propagation direction is adjusted convex lens 34 and is adjusted into the less light beam of directional light or angle, part light directly spreads out of in the total reflection mode from column body segment 352, another part light spreads out of in the total reflection mode from column body segment 352 after cone segments 351 reflections.Therefore, optical propagation direction adjustment convex lens 34 can constitute a luminous energy multiplier 3 with light output end 35.
Fig. 5 is the structure of light output end 35 and the energy multiplication synoptic diagram of light.Mainly constitute by cone segments 351 and column body segment 352.The light that has focused on is after optical propagation direction is adjusted concavees lens 36 and is adjusted into the less light beam of directional light or angle, part light directly spreads out of in the total reflection mode from column body segment 352, another part light spreads out of in the total reflection mode from column body segment 352 after cone segments 351 reflections.Therefore, optical propagation direction adjustment convex lens 34 can constitute a luminous energy multiplier 3 with light output end 36.
Synoptic diagram is propagated in the structure and the light total reflection therein that Figure 6 shows that total reflection light transfer rod 4.It is made of light input end 41, solid light transmission barred body 42 and light output end 43.Light input end 41 terminations are cone, can insert the light output end 35 of optical energy density multiplier 3.The end face of light output end 43 has the taper shrinkage pool, can insert the light input end 51 of flexible optical transmission tube 5.Total reflection light transfer rod 4 is made by the light transparent materials with low optical transmission loss, for example the very low high-purity silicon dioxide of impurity content.When needing to turn at a certain angle in total reflection light transfer rod 4 installation processes, if the diameter of total reflection light transfer rod 4 is r, radius of turn is D, according to the light total reflection principle, when deriving the total reflection light transfer rod easily and needing to turn in installation process, radius of turn should satisfy D〉2r.
As shown in Figure 7, flexible optical transmission tube 5 is made of light input end 51, soft filling material 52, metal hose shell body 53, fibre-optic bundle 54 and light output end 55 that (fibre-optic bundle 54 is arranged in the metal hose shell body 53 vertically, and be filled with soft filling material 52 in this housing, termination, fibre-optic bundle two ends hot pressing respectively is that one forms input end 51 and output terminal 55, and the diameter of input end and output terminal is identical with the diameter of total reflection light transfer rod 4).The diameter of light input end 51 and light output end 55 is identical with the diameter of total reflection light transfer rod 4, and light input end 51 is a cone, can insert the light output end 35 of total reflection light transfer rod 4.Light input end 51, fibre-optic bundle 54 and light output end 55 are as an assembly of flexible optical transmission tube 5, be in special mould, directly methods such as termination, a branch of fibre-optic two ends employing hot pressing are made, the metal hose shell body 53 of packing into charges into the 52 back encapsulation of soft filling material.After light beam is entered by input end 51, divide and lead the different light transmitting fibers that enter fibre-optic bundle 54, converge the back again by light output end 55 outputs.
Optical energy density multiplier 3 can also be directly used in the multiplication and the transmission of parallel sunshine.The energy density multiplication of parallel sunshine and light path synoptic diagram such as Fig. 8 and shown in Figure 9 of transmission during design, can be determined d according to the optics first principles computations
1, d
2, n
1, n
2, f
1, f
2Or f
3When two or more luminous energy multiplier 3 is contacted by certain position relation, the optical energy density of transmission is further improved.The position Relation Parameters d of each assembly during series connection
iCan use n
1, n
2, f
iDeng parameter, calculate according to optical principle.
Figure 10 is that another kind of energy density multiplication constant is low relatively but the structural representation of the optical energy density multiplier 3 that cost of manufacture is also lower.It mainly is made of fibre-optic bundle 38, shell 39 and the light output end 40 of optical receiving end 37, reducing.The fibre-optic bundle 38 of reducing is made up of the many light transmitting fibers that become diameter, and the fibre-optic big end of single reducing is six water chestnut posts or four water chestnut rod structures, and small end is cylindrical.Adopt hot pressing methods such as (instant heating moulds) to make the optical receiving end 37 of end face the many fibre-optic larger diameter end that become diameters into the curved surface that concaves, the curvature of inner sunken face should so be selected, so that the angle of incident ray and the fibre-optic centreline space of each root is as much as possible little.The smaller diameter end of the fibre-optic bundle 38 of reducing is adopted method such as hot pressing make the diameter bar shape light output end 40 identical with the diameter of light transmission rods 4.When if the fibre-optic quantity that optical energy density multiplier 3 uses is a lot, then the angle between the light that received of each root light transmitting fiber is just very little or can be considered directional light, to the reception synoptic diagram of focused ray as shown in figure 11.When parallel rays passes through the light transmitting fiber of reducing, the synoptic diagram that energy density increases as shown in figure 12, light is during from bigger diameter end incident, part light enters the path section and propagates in the total reflection mode in the path section in the total reflection of reducing inclined-plane, and the energy density of the light that small end transmitted is just greater than big end.Figure 13 is the fibre-optic propagation synoptic diagram of the low-angle light of a by reducing for the maximum angle of incident light and fibre-optic central shaft, if the angle of reducing end inclined-plane and fibre-optic central shaft is b, b≤90-C-a then, wherein, C is the angle of total reflection, a is the maximum angle of incident light and light transmitting fiber central shaft, can determine that the larger diameter end area is the energy density multiplication constant with the ratio of little direct end area by the refractive index of optical fiber material.
Embodiment
Solar energy collecting and utilization system:
This system mainly is made of solar automatic tracker, concave surface condenser, luminous energy multiplier, total reflection light transfer rod, flexible optical transmission tube, photovoltaic cell board component, energy storage battery system, insulation water storage tank etc.Solar energy metric density multiplication is installed on the concave surface condenser focus accessory mount by shown in Figure 1 with transmitter, quantity greater than 4, total collection area is greater than 10m
2Concave surface condenser group be installed on again on the main support, drive it from the motion tracking sun by a solar automatic tracker.
The closed cavity of photovoltaic cell board component for surrounding by the polylith photovoltaic battery panel, light-sensitive surface is at inwall, a plurality of light leads hole is arranged on the assembly, so that the light output end of solar energy transfer rod can conveniently insert, the sunshine that a plurality of concave surface condensers are collected is introduced and is converted into electric energy, and is stored in the accumulator.The insulation water storage tank is the insulation water container that has the light lead hole.
This embodiment has following function: 1) solar cooker function.The cooker that can be a family or many families provides the energy; 2) electricity generating and energy storing function; 3) water heater function.After finishing the solar cooker function, can be respectively the optical transmission tube (5) of the flexibility of varying number be inserted the light lead hole of photovoltaic cell board component and the light lead hole of insulation water storage tank respectively, for the heating of the water in photovoltaic cell capable of generating power and the water container.This system is particularly useful for the multi-user of rural town, and basic electricity demand and hot water demands such as family's cooking, illumination are provided.
When transmission range was 10m, the total light energy losses rate of system was between 15% to 40%.The principal element that causes the loss of luminous energy comprises: 1) machining precision of concave surface condenser and reflector layer quality, and the light loss rate is between 5% to 10%; 2) machining precision of the optical transmission tube of luminous energy multiplier and flexibility, the light loss rate is between 5% to 15%; 3) light-absorbing impurity in the material is as OH
-And Fe
2+Deng, the light loss rate is between 2% to 5%; 4) light leak of the adapter couplings such as light transmission of light transmission rods and flexibility, the light loss rate is between 3% to 10%.
Claims (2)
1. a luminous energy is collected and total reflection luminous energy transmission system, comprise concave surface condenser (1), be provided with optical energy density multiplier (3) through locating support (2) on the focal position of concave surface condenser (1), the bar shape light output end of optical energy density multiplier (3) is connected with total reflection light transfer rod (4), the total reflection light transfer rod connects flexible optical transmission tube (5) again, and the latter is delivered to the use point with luminous energy; The light output end of optical energy density multiplier (3), total reflection light transfer rod (4) and optical transmission tube (5) three's diameter is identical, and optical energy density multiplier (3) fits with the cone of total reflection light transfer rod (4) front end face with the bellmouth of end face thereafter and is connected, and total reflection light transfer rod (4) fits with the cone of optical transmission tube (5) front end face with the bellmouth of end face thereafter and is connected; Optical energy density multiplier (3) plural serial stage uses; The material of total reflection light transfer rod (4) is a high-purity silicon dioxide, and its radius of turn should be greater than 2 times of self diameter; Described optical transmission tube (5) structure is: fibre-optic bundle (54) is arranged in the metal hose shell body (53) vertically, and be filled with soft filling material (52) in this housing, termination, fibre-optic bundle two ends hot pressing respectively is that one forms input end (51) and output terminal (55), and the diameter of input end and output terminal is identical with the diameter of total reflection light transfer rod (4); It is characterized in that, described optical energy density multiplier (3) structure is: the fibre-optic bundle (38) that is provided with reducing in the shell (39), it is made up of the many light transmitting fibers that become diameter, every fibre-optic big end that becomes diameter is cylindrical into six water chestnut posts or four water chestnut cylindricalitys, small end, this fibre-optic bundle front end through hot-forming for having the optical receiving end (37) of inner sunken face, the rear end through hot-forming be the light output end (40) of bar shape, be formed with the reducing end between the two, the diameter of light output end (40) is identical with the diameter of total reflection light transfer rod (4).
2. collect and total reflection luminous energy transmission system according to the described luminous energy of claim 1, it is characterized in that the reducing end inclined-plane between described optical receiving end (37) and the light output end (40) and the angle b of light transmitting fiber central shaft should satisfy following formula: b≤90-c-a; Wherein c is the angle of total reflection, and a is the maximum angle of incident light and light transmitting fiber central shaft.
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| CN101881524A (en) * | 2010-06-29 | 2010-11-10 | 丁俣 | Solar energy gathering and transmitting device |
| CN102385105B (en) * | 2010-08-30 | 2013-04-03 | 成都易生玄科技有限公司 | Energy-grade-light linear transmission method |
| CN101963394B (en) * | 2010-09-30 | 2012-05-23 | 北京印刷学院 | Secondary reflective spherical surface lighting solar hot water generating device |
| CN105509340B (en) * | 2016-01-04 | 2017-12-08 | 中国华能集团清洁能源技术研究院有限公司 | A kind of solar thermal collection system that aggregation light beam is transmitted using light guide cable |
| CN106195909B (en) * | 2016-08-18 | 2020-06-16 | 长安大学 | Device for guiding parallel composite light into optical fiber by using self-focusing lens combination |
| CN106766254A (en) * | 2016-12-05 | 2017-05-31 | 青海聚正新能源有限公司 | Solar cross-season thermal-arrest and soil heat reservoir |
| CN107996464B (en) * | 2017-12-13 | 2020-12-29 | 河海大学文天学院 | Optical cable type deep water nutrient salt circulation fishery yield increasing system |
| WO2023022669A1 (en) * | 2021-08-19 | 2023-02-23 | Muanchart Mankaew | Light intensifier in fisheries |
-
2008
- 2008-11-10 CN CN2008100465107A patent/CN101424785B/en not_active Expired - Fee Related
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| CN101424785A (en) | 2009-05-06 |
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