CN202855782U

CN202855782U - Cooling and gas heat utilizing apparatus for concentrating solar power system

Info

Publication number: CN202855782U
Application number: CN2012205097457U
Authority: CN
Inventors: 王智勇; 陈丙振; 杨光辉; 代明崇; 卫明
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2013-04-03
Anticipated expiration: 2022-09-27

Abstract

The utility model provides a cooling and gas heat utilizing apparatus for a concentrating solar power system, which relates to the field of photovoltaic technology. The apparatus specifically comprises a gas filter (2), concentrating solar power boxes (3), a gas driver (1) and/or a blade generator (10), a gas pipeline (5), a gas heat utilizing unit (4) and a flow velocity monitoring and controlling instrument (12), wherein the concentrating solar power boxes (3) are in tandem, parallel or multi-stage parallel connection in the gas pipeline (5) and compose an enclosed or quasi-enclosed gas circuit with the gas driver (1) and/or the blade generator (10), the gas filter (2) and the gas heat utilizing unit (4) through the gas pipeline (5). To overcome a technical problem, the utility model provides the cooling and gas heat utilizing apparatus for the concentrating solar power system so as to allow the whole gas circuit to be highly enclosed and clean and to prevent external pollutants like dust, grease and steam to enter into the concentrating solar power boxes.

Description

Cooling and the air heat use device of a kind of Photospot solar system

Technical field

The utility model relates to the photovoltaic technology field, relates in particular to cooling and the air heat use device of a kind of Photospot solar system.

Background technology

Current, third generation photovoltaic power generation technology take concentrating photovoltaic power generation (HCPV) as representative is experiencing fast development, its correlation technique has become the research and development focus of all kinds of research institutes and enterprise, and various condensation photovoltaic demonstration projects and scale power station also occur all over the world one after another.With regard to its cardinal principle, concentrating photovoltaic power generation technology (CPV) refers to use lens or minute surface that the sunray that receives is focused on, make high-energy-density hot spot after the focusing in alignment with on small size, high efficiency silicon or the multijunction compound solar battery chip, obtain energy output.The condensation photovoltaic technology has that conversion efficiency height, battery consumption are few, environmental friendliness, system attenuation are little, long service life, occupation of land is little, easy to maintenance, reliability is high, be easy to make up on a large scale series of advantages such as forming the large-scale photovoltaic power station is installed.

Simultaneously, as a class emerging technology, the condensation photovoltaic technology also exists some technological difficulties and needs to be resolved hurrily, and the sealing of module and heat dissipation problem are exactly one of them.

The employed die set of condensation photovoltaic technology is generally box or box structure at present, and the upper surface of casing is condensing glass plate or light transmission glass plate, and the bottom surface is the base plate that is mounted with receiver and electrical connection circuit, is the casing side frame all around.For avoiding extraneous dust, rainwater, moisture etc. to enter box house, guarantee normal operation and the long-term reliability of inner photovoltaic cell, optical lens and electrical connection, casing adopts Seal Design usually, namely use the glue that is sealing adhesive with each junction bonding of casing, make the isolation of box house and external environment.But complete hermetic design has brought again the problem of heat radiation and pressure.Because the Photospot solar long-term work is at high-temperature zone at strong sunshine, box sealing will bring the accumulation of heat of box house, makes that temperature raises in the casing.Two aspects consequently, high temperature can affect the work of photovoltaic cell and core component on the one hand, makes its Efficiency Decreasing; High temperature causes gas expansion in the casing on the other hand, causes box house pressure much larger than atmospheric pressure, forms the casing inside and outside differential pressure, is very easy to cause box deformation and damage.For avoiding sealing the pressure damage that causes fully, and reduce the temperature of photovoltaic cell, current concentrating component casing adopts non-sealed structure usually, often in the casing side or the back side open an aperture, as transom.Transom uses the air permeable waterproof dust-proof material usually, avoids water and dust to enter, and has guaranteed that simultaneously inside and outside differential pressure is consistent.

But the working life of the employed air permeable waterproof dust-proof material of transom own is very limited, is difficult to satisfy length of service (25 years) requirement of photovoltaic generating system.And they are under some extreme weather conditions, be easily damaged or suffer local damage, outer boundry particle, steam or grease etc. are entered, destroyed the operational environment of system, transmissivity of optical system is descended, be electrically connected corrosion and oxidation impaired and that bring system core parts, the destruction of causing irrecoverability.In addition, the transom area is usually very little, and for guaranteeing that water proof and dust proof needs, its venting capability is very limited, only can satisfy the needs of balance inside and outside differential pressure, and be difficult to make gas flow inside and outside the casing, the heat that module is accumulated under solar radiation not only can't obtain utilizing, and the box house working temperature is raise, and has affected the operating state of photovoltaic module, system effectiveness is descended, the life-span reduction.

Therefore, instantly need a urgent technical problem that solves to be exactly: how can propose a kind of effective measures, to solve problems of the prior art.

The utility model content

The utility model provides cooling and the air heat use device of a kind of Photospot solar system, with so that whole gas return path keeps highly airtight and high cleaning, avoids the pollutants such as extraneous dust, grease and steam to enter the Photospot solar casing.

In order to solve the problems of the technologies described above, the utility model provides cooling and the air heat use device of a kind of Photospot solar system, specifically comprises: pneumatic filter (2), Photospot solar casing (3), gas drive (1) and or blade generator (10), gas piping (5), air heat use device (4) and flow monitoring and controller (12); Photospot solar casing (3) consists of series connection in gas piping (5), the form of parallel connection or plural parallel stage, and with gas drive (1) and or blade generator (10), pneumatic filter (2) and air heat use device (4) consist of an airtight or accurate airtight gas return path by gas piping (5), described flow monitoring and controller (12) are linked in the gas return path by fast plug receptacle, consist of the relation that is connected in series with other devices in the loop, described flow monitoring and controller (12) comprise the flow monitoring probe, display and program-controlled flow rate regulating valve.

Further, described gas drive (1) comprises motor and blade, is that electric energy conversion is the device of mechanical energy, and the mode of moving by the electric energy drive vane produces pressure differential in the pipeline at device two ends, produces directed flow in the driving gas pipeline.

Further, described gas-filtering device (2) be absorbent material, oil absorption material and or the passive type gas filtration parts made of dedusting material.

Further, described gas-filtering device (2) be filter screen and or filter core, and described filter screen and filter core are detachable type.

Further, described Photospot solar casing (3) is the body structure of sealing or accurate sealing, be connected with gas piping, the Photospot solar box house contains condenser lens or concave mirror class optical focus parts and silion cell or compound solar cell class solar module.

Further, described air heat use device (4) is converted to the heat-exchange device of liquid for gas, its liquid that adopts be pure water, salt solution and or grease-like liquid.

Further, described gas piping (5) comprises tracheae and Pressure monitoring, air-tightness plug connector and the air-tightness detection means of the different bores of multistage.

Further, described blade generator (10) is the device that mechanical energy is changed and exported to electric energy, comprises blade, rotor and solenoid parts.

Further, described blade generator (10) comprises the mechanical energy that is comprised of many covers blade, rotor and solenoid to the conversion equipment of electric energy.

Further, gas cooled and the heat utilization device of described Photospot solar system comprise one or more Photospot solar casings.

To sum up, in the scheme described in the utility model by setting up airtight or accurate airtight gas circulation loop and introducing gas-filtering device, can make whole gas return path keep highly airtight and high cleaning, avoided extraneous dust, the pollutant such as grease and steam enters the Photospot solar casing, and then avoided that pollutant may bring to casing inner core parts such as optics, the pollution of solar cell and electrical connection circuit etc., destroy and other adverse effect, stopped again on the other hand the Photospot solar casing when gases are heated, they expand in the internal cause casing in the high-seal situation and that produce and pressure reduction external environment, and the situations such as damage that under differential pressure conditions, may bring.

In addition, the utility model can also effectively be taken away the heat that produces in the Photospot solar casing and be used under strong solar radiation, increased energy and utilized approach, and improved the capacity usage ratio of whole photovoltaic system.

Description of drawings

Fig. 1 is the cooling of a kind of Photospot solar system of embodiment one of the present utility model and the structural representation of air heat use device;

Fig. 2 is the cooling of a kind of Photospot solar system of embodiment two of the present utility model and the structural representation of air heat use device;

Fig. 3 is the cooling of a kind of Photospot solar system of embodiment three of the present utility model and the structural representation of air heat use device;

Wherein, among Fig. 1,1, gas drive, 2, pneumatic filter, 3, Photospot solar casing, 4, the air heat use device, 5, gas piping, 6, gas input direction, 7, gas outbound course, 8, cold liquid inflow direction, 9, the heated fluid stream outgoing direction, 12, flow monitoring and controller;

Among Fig. 2,2, pneumatic filter, 3, the Photospot solar casing, 5, gas piping, 6, gas input direction, 7, the gas outbound course, 10, the blade generator, 11, the electric power output line of blade generator, 12, flow monitoring and controller;

Among Fig. 3,2, pneumatic filter, 3, the Photospot solar casing, 4, the air heat use device, 5, gas piping, 6, gas input direction, 7, the gas outbound course, 8, cold liquid inflow direction, 9, cold liquid flows out direction, 10, blade generator, 11, the electric power output line of blade generator, 12, flow monitoring and controller.

Embodiment

This programme provides cooling and the air heat use device of a kind of Photospot solar system, comprises pneumatic filter (2), Photospot solar casing (3), gas drive (1) and or blade generator (10), gas piping (5), air heat use device (4) and flow monitoring and controller (12); Photospot solar casing (3) consists of series connection in gas piping (5), the form of parallel connection or plural parallel stage, and with gas drive (1) and or blade generator (10), pneumatic filter (2) and air heat use device (4) consist of an airtight or accurate airtight gas return path by gas piping (5), described flow monitoring and controller (12) are linked in the gas return path by fast plug receptacle, consist of the relation that is connected in series with other devices in the loop, described flow monitoring and controller (12) comprise the flow monitoring probe, display and program-controlled flow rate regulating valve, described flow monitoring and controller (12) but the flow velocity of Real-Time Monitoring gas and showing; It also can control gas at the flow velocity of particular moment by program-controlled flow rate regulating valve, but and then the speed of gas flow and exchange heat in the control loop.

Below provide the specific embodiment in the reality:

Embodiment one

Specifically referring to Fig. 1, have three Photospot solar casings 3, Photospot solar casing 3 casings are connected with the air heat use device with pneumatic filter 2 and are connected by gas piping 5, between three Photospot solar casings 3 for being connected in parallel, pneumatic filter 2 is connected with gas drive 1 by gas piping 5, and the other end of gas drive 1 is connected with air heat use device 4 by gas piping 5.The air heat use device of present embodiment is a kind of heat exchange that utilizes between hot gas and cold water, with the device of cool water heating.In addition, because Photospot solar casing 3 numbers are less in the present embodiment, gas is heated and the heat flow effect that produces is not obvious in the casing, for satisfying gas flow and filtering needs, adopted gas drive 1, make gas circuit produce pressure reduction at gas drive 1 two ends by external electric power, drive gas in gas piping and pipeline institute flows through between each device.Flow monitoring and controller 12 are linked in the gas return path by fast plug receptacle, consist of the relation that is connected in series with other devices in the loop.

Among Fig. 1, when Photospot solar casing 3 is worked at solar light irradiation, the rear expansion of being heated of the gas in the casing, density reduces and rises, and gas enters gas piping 5 from the interface on the casing, and the trend of moving along gas outbound course 7 is arranged.Receive power supply with gas drive 1 this moment, will make the gas in the pipeline produce pressure reduction at the two ends of gas drive 1 after gas drive 1 work, impels gas along gas input direction 6 setting in motions.Passed through the heat exchange of air heat use device 5 from the next gas of air heat use device 5 streams, temperature is lower, its under the driving of gas drive 1, flow through gas drive 1, pneumatic filter 2, and when gas coming through filter 2, finished filter process, removed most of grease, steam and the dust in the gas, made the cleaning gas degree satisfy the requirement of Photospot solar casing 3; Afterwards, the cryogenic gas after the filtration enters the Photospot solar box house by the interface of Photospot solar casing 3 lower ends, takes away the heat that box house is accumulated under solar light irradiation, and the working temperature of box house is remained in the rational scope; Thereafter, the upper end interface of gas along gas outbound course 7 from the Photospot solar casing flows out, and gas coming through heat utilization device 5, this high-temperature gas temperature after carrying out heat exchange with the cold water that enters along cold liquid inflow direction 8 is reduced, afterwards under the pressure that gas drive 1 produces, continuation is moved along gas input direction 6 and gas outbound course 7, finishes next flowing and heat exchange circulation, and the Photospot solar casing is continued cooling.And heated hot water will flow out along heated fluid stream outgoing direction 9 in air heat use device 5, is used by people.By flow monitoring and controller 12 are read, can the Real-Time Monitoring gas piping in gas flow rate, and can carry out certain adjusting to flow velocity, system is carried out under best operating condition.

Present embodiment is by being connected Photospot solar casing 3 with gas piping 5 and other devices, both avoided the interior harm that when gases are heated, they expand may cause casing of the Photospot solar casing that seals, also effectively hot gas is used; And kept the cleanliness factor of Photospot solar box house by gas-filtering device 1, can effectively avoid grease, dust, steam etc. to the destruction of box house device work.

Embodiment two

Embodiment two sees Fig. 2.In the present embodiment, have four groups of Photospot solar casings, every group contains ten Photospot solar casings 3.Between four groups of Photospot solar casings and between every group of ten casing, all be to be connected in parallel by gas piping 5.Four groups of Photospot solar casings 3 are connected with pneumatic filter 2, blade generator 10 by gas piping 5.Because the Photospot solar casing number in the gas return path is more, when gases are heated, they expand in the casing reaches the gas flow effect with apparent in view in the present embodiment, can directly be with 10 generatings of moving vane generator.

Among Fig. 2, when Photospot solar casing 3 is worked under solar light irradiation, the rear expansion of being heated of gas in the casing, to flow out from the gas piping interface of casing upper end, after the hot gas that flows out in the Photospot solar casing of four groups of parallel connections converged, gas continued upwards to flow, by being positioned at the blade generator 10 on the gas piping, the driving turbo blade rotates, and obtains electric power output.Because gas is upwards promoting the blade acting in the flow process, and gas flow rate is slack-off, temperature also will reduce gradually simultaneously.And this moment is because the rising of Photospot solar box house gas, to there be new gas to enter additional its position from the lower end interface of Photospot solar casing 3, and then whole gas piping 5 interior generations along the gas flow of gas input direction 6 and gas outbound course 7, impel through the cooled gas that does work and continue to move along pipeline, remove the pollutants such as steam in the gas, dust, grease through pneumatic filter 2 after, reenter in four groups of Photospot solar casings 3, finish the motion cycle of next round behind the expanded by heating.By flow monitoring and controller 12 are read, can the Real-Time Monitoring gas piping in gas flow rate, and can carry out certain adjusting to flow velocity, system is carried out under best operating condition.

Present embodiment is by carrying out plural parallel stage with dozens of Photospot solar casing 3, make the gas hot expanding type in the whole loop and the obviously quickening of upwards flowing under solar light irradiation, and generation pressure differential gas carries out spontaneous flowing, make gas obtain to filter, and the generating of the blade rotation of drive vane generator.

Embodiment three

Embodiment three sees Fig. 3.In the present embodiment, have six groups of Photospot solar casings, every group contains ten Photospot solar casings 3.Between six groups of Photospot solar casings and between every group of ten casing, all be to be connected in parallel by gas piping 5.Six groups of Photospot solar casings 3 are connected with the blade generator with pneumatic filter 2 by gas piping 5 and are connected, and pneumatic filter 2, blade generator 10 pass through gas piping 5 and be connected with air heat use device 4.More owing to the connect box number in the present embodiment, when gases are heated, they expand in the casing and since the gas flow effect that gas expansion produces with apparent in view, can directly be with 10 generatings of moving vane generator, also can utilize simultaneously air heat use device 4 to carry out cold and hot exchange, obtain hydrothermal solution output.

Among Fig. 3, when Photospot solar casing 3 is worked under solar light irradiation, the rear expansion of being heated of the gas in the casing will be flowed out from the interface of casing upper end with gas piping 5.After the gas of six groups of Photospot solar casing parallel branches converges, move upward by certain speed along gas outbound course 7.Gas drives its turbo blade and rotates and then obtained electric power output when being positioned at the blade generator 10 on the gas piping.Because the pressure reduction that gas rises and causes in each Photospot solar casing, gas after confluxing continues to move along gas outbound course 7 through blade generator 10, inflow gas heat utilization device 5, and will heat along the cold liquid that cold liquid input direction 8 enters into air heat use device 5, obtain hydrothermal solution output.Gas temperature after the gas coming through heat utilization device 5 reduces, and after removing the pollutants such as steam, dust and grease by pneumatic filter 2, enters casing along gas input direction 6, the circulation of beginning next round gas flow and utilization.By flow monitoring and controller 12 are read, can the Real-Time Monitoring gas piping in gas flow rate, and can carry out certain adjusting to flow velocity, system is carried out under best operating condition.

Gas drive 1 in the various embodiments described above is a kind of electric energy-mechanical energy device, contains the parts such as motor, blade; Can make gas in the pipeline at these device two ends, produce pressure differential by the mode of electric energy drive vane motion, produce directed flow in the driving gas pipeline.

Gas-filtering device 2 in the various embodiments described above can be special automation gas filtration equipment, also can be passive type gas filtration parts such as filter screen or the filter core etc. that are mixed by absorbent material, oil absorption material and dedusting material etc.; The functional parts such as the filter screen of gas-filtering device or filter core can unload regularly to be changed clothes.

Photospot solar casing 3 in the various embodiments described above is the body structure of sealing or accurate sealing, and except passing through upper lower interface and gas piping is connected, Photospot solar casing and casing external environment do not have other gas switching channel or only have the gas exchange of trace; Box house contains optical focus parts and the solar modules such as silion cell or compound solar cell such as condenser lens or concave mirror.

Air heat use device 4 in the various embodiments described above is a kind of gas-liquid heat-exchange device, and its liquid that adopts can be pure water, also can be other liquid such as salt solution, grease.

Gas piping 5 in the various embodiments described above contains the tracheae of the different bores of air-tightness plug connector, multistage and Pressure monitoring, air-tightness detection means.

Blade generator 10 in the various embodiments described above is a kind of mechanical energy-electric energy conversion and output device, contains the parts such as blade, rotor, solenoid; It can be multistage power generation mode, and namely this device can contain the mechanical energy-device for converting electric energy such as many cover blades, rotor, solenoid.

More than cooling and the air heat use device of Photospot solar provided by the utility model system is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. the cooling of a Photospot solar system and air heat use device, it is characterized in that, comprise pneumatic filter (2), Photospot solar casing (3), gas drive (1) and or blade generator (10), gas piping (5), air heat use device (4) and flow monitoring and controller (12); Photospot solar casing (3) consists of series connection in gas piping (5), the form of parallel connection or plural parallel stage, and with gas drive (1) and or blade generator (10), pneumatic filter (2) and air heat use device (4) consist of an airtight or accurate airtight gas return path by gas piping (5), described flow monitoring and controller (12) are linked in the gas return path by fast plug receptacle, consist of the relation that is connected in series with other devices in the loop, described flow monitoring and controller (12) comprise the flow monitoring probe, display and program-controlled flow rate regulating valve.

2. cooling and the air heat use device of Photospot solar according to claim 1 system, it is characterized in that, described gas drive (1) comprises motor and blade, that electric energy conversion is the device of mechanical energy, mode by the motion of electric energy drive vane produces pressure differential in the pipeline at device two ends, produce directed flow in the driving gas pipeline.

3. cooling and the air heat use device of Photospot solar according to claim 1 system is characterized in that described gas-filtering device (2) is the passive type gas filtration parts that absorbent material, oil absorption material and or dedusting material are made.

4. cooling and the air heat use device of Photospot solar according to claim 3 system is characterized in that described gas-filtering device (2) is filter screen and or filter core, and described filter screen and filter core are detachable type.

5. cooling and the air heat use device of Photospot solar according to claim 2 system, it is characterized in that, described Photospot solar casing (3) is the body structure of sealing or accurate sealing, be connected with gas piping, the Photospot solar box house contains condenser lens or concave mirror class optical focus parts and silion cell or compound solar cell class solar module.

6. cooling and the air heat use device of Photospot solar according to claim 4 system, it is characterized in that, described air heat use device (4) is converted to the heat-exchange device of liquid for gas, its liquid that adopts be pure water, salt solution and or grease-like liquid.

7. cooling and the air heat use device of Photospot solar according to claim 1 system is characterized in that, described gas piping (5) comprises tracheae and Pressure monitoring, air-tightness plug connector and the air-tightness detection means of the different bores of multistage.

8. cooling and the air heat use device of Photospot solar according to claim 1 system is characterized in that, described blade generator (10) be mechanical energy to the device of electric energy conversion and output, comprise blade, rotor and solenoid parts.

9. cooling and the air heat use device of Photospot solar according to claim 1 system is characterized in that, described blade generator (10) comprises the mechanical energy that is comprised of many covers blade, rotor and solenoid to the conversion equipment of electric energy.

10. cooling and the air heat use device of Photospot solar according to claim 1 system is characterized in that, comprise one or more Photospot solar casings.