CN202853148U - Photothermal photoelectric integration type solar collector - Google Patents

Abstract

The utility model discloses a photothermal photoelectric integration type solar collector which is mainly used for simultaneously collecting solar photo-thermal and photoelectricity. The photothermal photoelectric integration type solar collector comprises a support (1), bearings (2 and 19), a one-dimensional tracking system (3), a hydraulic transmission rod (4), retroreflectors (5 and 6), a photothermal photoelectric collecting box outer shell, an insulating layer, a vacuum glass light permeable cover plate, a narrow slit, a receiving plate (11), a photoelectric battery, a heat-transfer metal square water pipe, an automatic control water pump (18), a water inlet, a water outlet and a photoelectric output lead. The photothermal photoelectric integration type solar collector is characterized in that one-dimensional step-by-step type tracking is adopted, the solar collector is horizontally arranged, and a plurality of metal pieces are perpendicularly arranged on the receiving plate (11) to form the narrow slit to reflect solar light beam, and reflective rateis greatly reduced. The photothermal photoelectric integration type solar collector not only can achieve the purpose of spotlight and collection of solar energy, but also is simple in structure, reduces cost, improves cost performance, and enables the commercial operation of scaled and industrialized spotlight and collection of the solar energy to be possible.

Description

Photo-thermal photoelectric integral type solar collector

Technical field

The utility model relates to a kind of photo-thermal photoelectric integral type solar collector, is mainly used in solar energy optical-thermal photoelectricity and gathers simultaneously.

Background technology

At present the photovoltaic cell arrays of general solar collector, particularly pot-type boiler and roof photovoltaic generation engineering adopts fixed placement, and the also with good grounds different situations that have are taked the mode fixed reception solar energy that keeps flat, tiltedly put.As everyone knows, the earth is around the variation of sun revolution and rotation, and the fixed placement collector can not the round-the-clock solar energy that collects high fluence with the optically focused means; And optically focused collection solar energy can change the sun light beam of low energy beam into the sun light beam of high energy beam by acquisition applications.Humanly over the past thousands of years constantly explore, successful Application Fresnel Lenses, light funnel light concentrating, slot light collection technology, but complex process, the cost height is the Main Bottleneck of commercial applications.

Photovoltaic cell generates electricity under high power concentrator.Along with the generating efficiency decay of the raising photovoltaic cell of temperature until photovoltaic cell burns out inefficacy, the cost of cooling is the burden that is difficult to overcome of photovoltaic concentration power generation.Up to the present, the beam condensing unit of people's employing is broadly divided into three classes: tower beam condensing unit, flute profile parabolic lens beam condensing unit and disc type parabolic concentration device.This three classes beam condensing unit has common characteristics, all is to follow the tracks of the sun by rotating speculum.If need the solar energy of 1000kw, just need 1500 square metres condenser to come optically focused (averag density of solar energy only have an appointment 700-800w/m2) namely to need about 150 10 square metres condenser, every speculum all needs to overlap independently follow-up control apparatus and follows the tracks of the sun.Because these devices will bear the erosion of wind and snow rain in outdoor operation, therefore must be able to resist the strong wind more than eight grades.The active force that mirror bears in wind is very large, is exaggerated tens times by this active force of lever principle at the strong point or back shaft, has sizable destruction.For making the system stable operation several years, its mechanical support running part must be very firm.Therefore a cover has the mechanically tracking device of use value usually quite expensive, and price is about 20,000 yuan.Only 150 cover tracking means just need two or three hundred ten thousand yuan, add other corollary systems, and the whole system cost is very high, loses more than gain economically.In addition, any one mechanical system all needs to consider the maintenance problem after breaking down.Suppose that a cover tracking control system may (go out primary fault, and need repairing once by steady operation in 3 years in namely 3 years.This has been a very high requirement to mechanical system, these similar devices in addition the phenomenon that just can't work appearred after the strong wind).Because 150 cover follow-up control apparatus are independent of one another, on average just there is weekly a cover equipment to break down, need repairing.This can bring inconvenience extremely to the user.After 3 or five years, owing to mechanical aging, erosion by wind and rain and the phenomenon such as get rusty occur inevitably, the fault rate of apparatus system rises, and maintenance and maintenance work will consume a large amount of manpower and materials, make the producer and user be difficult to bear.

The problem of above-mentioned existence just sun spotlight tracking technology slowly can't be stepped into the reason place of large-scale application, generally believes in the industry by the Design and manufacture level that improves mechanical system to be difficult to solve.Want to address this problem, need to explore new Salar light-gathering tracking.

Summary of the invention

For addressing the above problem, the utility model provides a kind of photo-thermal photoelectric integral type solar collector.Adopt vertical pole axis step-by-step movement Salar light-gathering tracking, can not only reach the purpose that optically focused gathers solar energy, and simple in structure, reduced cost, improved cost performance, the commercial operation that makes scale, industrialization optically focused gather solar energy becomes possibility.

Photospot solar collector of the present utility model is comprised of collector support, bearing, one dimension tracking system, hydraulic drive bar, reflective mirror, photo-thermal photoelectricity collecting cassette shell, heat-insulation layer, vacuum glass euphotic cover plate, narrow slit, absorber plate, photoelectric cell, automatic controlled water pump, heat-transfer metal side's water pipe, water inlet, delivery port, photocell lead-out wire; Its one dimension tracking system is taked to arrange by the horizontal east-west direction in the axis of collector.According to the variation of the declination angle of calculated in advance, parabolic mirror is made pitch rotation around axle and is followed the tracks of the sun, reaches the daytime whole day and can both optically focused collects the solar energy purpose of high fluence.Because variation one cycle of half a year of the revolution of the earth, taked this method after, the collector angle changes about 0.2 degree and take the one dimension elevating movement every day, about every day, follow-up machinery rotated approximately once, makes the earth center on the variation that sun revolution occurs and obtains correcting; The light beam of the sun is parallel to the receiving plane of vertical sun collector all the time.Again because thing horizontal positioned collector, and the accurate thing horizontal positioned of the axis of pressing the solar collector pitch bearing, from morning to night basically keep the vertical centering control axial plane of receiving plane of solar collector and solar energy bunch within one day on parallel surface, the refraction of optical beam hot spot that enters on the parabola reflective mirror will all drop on the thing extended line of solar collector receiving plane or receiving plane by design.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is structural representation of the present utility model

Fig. 2 is photo-thermal photoelectricity collecting cassette profile

The specific embodiment

Shown in Figure 1, a kind of photo-thermal photoelectric integral type solar collector and vertical pole axis step-by-step movement Salar light-gathering gather tracking and comprise that optically focused collector, one dimension tracking system, automatic controlled water pump and transmission device form.The optically focused collector is comprised of parabola reflective mirror 5,6, solar collector dash receiver 11, support 1, hydraulic drive bar 4; Parabola reflective mirror 5,6 and transmission device and solar collector dash receiver 11 be integrated, form optically focused and receive combination.Design guarantee when the sunshine bunch with perpendicular to dash receiver 11 in axial plane when parallel, refractive power hot spot focusing surface is on dash receiver 11; One dimension tracking system 3 order-driven hydraulic drive bars 4 guarantee that the one dimension angle of pitch makes sun light beam be parallel to collector axis vertical plane; The level thing is put and is referred to that sun collector receives panel 11 and is parallel to bearing 2,19 direction settings.In the time of at noon, sunbeam is positive to be thrown on the collection face of sun collector, and condenser mirror 5,6 reception direct beams are refracted on the dash receiver 11 of solar collector simultaneously.Sunbeam is vertical with sun collector dash receiver 11, and it is maximum to receive luminous energy stream, and sun light beam and dash receiver 11 slant sooner or later, can flow to reduce along with the increase at angle of inclination.Although sun light beam favours receiving plane 11, but the hot spot that tilts is thing translation on solar collector dash receiver 11, if several solar collector thing one line level matrixes are put, the translation of solar collector hot spot will inevitably drop on the dash receiver 11 of adjacent solar collector so.Gather in the solar engineering in scale, industrialization, this translation reduces and can ignore the comprehensive energy efficiency of solar collector matrix.

The collector array of this east-west direction one line horizontal positioned only needs a cover tracking system, can reduce cost by the order of magnitude.

As shown in Figure 2, sun light beam is injected on the dash receiver 11 by vacuum glass euphotic cover plate 9, the dash receiver 11 that luminous energy was processed by black absorbs, and its thermal energy conduction is to the working-medium water in heat-transfer metal side's water pipe 13, and working-medium water drives by automatic controlled water pump 18 a large amount of heat energy is taken away.The cold water that replenishes begins the circulation of next round thermal-arrest.Because this One-dimensional Vertical pole axis laying method, make light beam only in the vertical direct projection of positive noon (local time) in dash receiver 11, all the other times are to tilt to be injected into dash receiver 11, the some sheet metals 16 that are arranged on the dash receiver 11 form narrow slit 10, to receive the oblique line light beam of most of the time on daytime, this light beam all is received on metal narrow slit sheet 16 and the dash receiver 11 by narrow slit 10 beginning Multi reflections suitable for reading, be absorbed, reduced reflecting rate; Because 16 2 of sheet metals have gluedd joint photoelectric cell 12, produced electric energy so photoelectric cell 12 has obtained the optically focused light beam again, used by 17 outputs of photoelectric cell output lead.The effect of vacuum glass euphotic cover plate 9 and heat-insulation layer 8 is to make the temperature in the photo-thermal photoelectricity collecting cassette shell 7 increase and increase along with the heat energy that collects.And the performance of photoelectric cell is being born under the high temperature, and generated energy and the life-span of photoelectric cell all have a significant impact; The utility model has adopted sheet metal 16 to support photoelectric cell 12, the high temperature heat that photoelectric cell 12 Surface absorption strong beams form, in time heat conduction is in heat-transfer metal side's water pipe 13, cold water in heat-transfer metal side's water pipe 13 absorbs the heat transfer of sheet metal 16 and goes out, keep the temperature in the photo-thermal photoelectricity collecting cassette 7 in the control temperature, to move, both guaranteed the collection of heat energy, guaranteed again that photoelectric cell 12 generated electricity under nominal situation.Photoelectric cell cooling cost burden is become the means that gather heat energy, and this complementary change " passiveness " is " actively ", highlights the remarkable result of this product.

The utlity model has large industrialization and gather the characteristics of solar energy, simple in structure, cost is lower, can be widely used in the fields such as preheating water engineering, desalinization, heat supply heating, combustible ice exploitation of primary energy thermal power generation industry.

Claims (2)

1. photo-thermal photoelectric integral type solar collector is by support (1), bearing (2,19), one dimension tracking system (3), hydraulic drive bar (4), reflective mirror (5,6), photo-thermal photoelectricity collecting cassette shell (7), heat-insulation layer (8), vacuum glass euphotic cover plate (9), narrow slit (10), dash receiver (11), photoelectric cell (12), heat-transfer metal side's water pipe (13), automatic controlled water pump (18), water inlet (14), delivery port (15), photoelectric cell output lead (17) forms; It is characterized by: the narrow slit (10) that some sheet metals (16) are made vertically is set on the dash receiver (11) of heat-transfer metal side's water pipe (13) phototropic face, and some photoelectric cells (12) are gluedd joint on the two sides of sheet metal (16).

2. photo-thermal photoelectric integral type solar collector according to claim 1, it is characterized in that: narrow slit (10) forms for some sheet metals (16), be integrated with dash receiver (11) vertical welding, the adjacent spacing of sheet metal (16) aspect ratio sheet metal (16) is more than or equal to 5.

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