CN105066484B - Metal tube surface radiant intensity measurement device and method in groove type solar thermal-collecting tube - Google Patents
Metal tube surface radiant intensity measurement device and method in groove type solar thermal-collecting tube Download PDFInfo
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- CN105066484B CN105066484B CN201510438333.7A CN201510438333A CN105066484B CN 105066484 B CN105066484 B CN 105066484B CN 201510438333 A CN201510438333 A CN 201510438333A CN 105066484 B CN105066484 B CN 105066484B
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- light radiation
- measurement module
- strength measurement
- photovoltaic cell
- pipe
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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
The invention discloses metal tube surface radiant intensity measurement device and method in a kind of groove type solar thermal-collecting tube, the device is mainly made up of slot-type optical collector, vacuum heat collection pipe, light radiation strength measurement module and refrigerating fan.Wherein, light radiation strength measurement module is symmetrically mounted on the extending part at vacuum heat collection pipe two ends, light radiation strength measurement module is to replace the metal tube in vacuum heat collection pipe with resistant to elevated temperatures plastic tube, and in the narrow photovoltaic cell bar of the circumferential uniformly attaching N roots in its surface, rim ray enters light radiation strength measurement module, through glass tubing, then it is radiated on narrow photovoltaic cell bar, light radiation intensity can be read in real time by digital display device.Present configuration is compact, takes full advantage of the unserviceable rim ray of trough type solar heat-collector, and need not additionally install a large amount of supporting structures, can measure the light radiation intensity of metal tube surface with numerical index in real time.
Description
Technical field
The present invention relates to metal tube surface radiant intensity measurement device and method in a kind of groove type solar thermal-collecting tube, belongs to
Solar thermal collector technical field.
Background technology
Trough type solar heat-collector is current degree of commercialization highest line focus type solar thermal collector.Groove type solar
Heat collector, using the slot-type optical collector of high reflectance, solar radiant energy is focused on the outer surface of vacuum heat collection pipe.Groove type solar
Heat collector reflecting surface is usually the groove type paraboloid being spliced by polylith arc curve mirror.Meanwhile, vacuum heat collection pipe is located to be thrown
Above object plane, axis is overlapped with paraboloidal focus, is fixed using rotary shaft of the steel frame construction with slot-type optical collector.Current slot type
Metal tube surface light radiation intensity in solar thermal collector vacuum heat collection pipe is mainly by computer software simulation emulation
The numerical value for obtaining.And in the actual moving process of trough type solar heat-collector, it is difficult to direct measurement obtains metal tube surface
Light radiation intensity, and sunlight is radiated at below vacuum heat collection pipe after over-focusing, light is radiated at gold again through glass tubing
Below category pipe, hot-spot below metal tube can be caused, cause metal tube flexural deformation even to destroy.For these reasons, need
Want one kind measured in true environment in real time and metal tube surface light radiation in feedback groove type solar vacuum heat collection pipe
The device of intensity.
Content of the invention
In order to overcome the shortcomings of active computer simulation technology, the invention provides a kind of groove type solar thermal-collecting tube
Middle metal tube surface radiant intensity measurement device and method, can be measured and gold in feedback groove type solar vacuum heat collection pipe in real time
Category pipe surface light radiation intensity, by the light radiation intensity of metal tube surface output display in a digital manner, so as to experiment people
Member is compared with computer simulation emulation result, and simulation result is further optimized.
The present invention for achieving the above object, is adopted the following technical scheme that：
Metal tube surface radiant intensity measurement device in groove type solar thermal-collecting tube, including slot-type optical collector, vacuum heat-collecting
Pipe, light radiation strength measurement module, refrigerating fan and digital display device；Wherein, the slot-type optical collector is by polylith arc mirror
The groove type paraboloid that face is spliced, the vacuum heat collection pipe are located at the top of slot-type optical collector, and the vacuum heat collection pipe
Axis overlap with the focus of groove type paraboloid, the vacuum heat collection pipe is solid using the rotary shaft of steel frame construction and slot-type optical collector
Fixed；
Marginal position on trough type solar heat-collector both sides is symmetrically installed steelframe, and steelframe upper end sets quoit and and vacuum
Thermal-collecting tube is concentric, is symmetrically installed light radiation strength measurement module on steelframe；The light radiation strength measurement module by
Narrow photovoltaic cell bar, glass tubing, high-temperature resistance plastice pipe and small fan are constituted, and the axis of the light radiation strength measurement module
Coaxial with vacuum heat collection pipe, wherein, high-temperature resistance plastice pipe in glass tubing, is set, one layer is coated absolutely in the outer surface of high-temperature resistance plastice pipe
Edge layer, in the narrow photovoltaic cell bar of the circumferential uniformly attaching N bars of the outer surface of high-temperature resistance plastice pipe；The output of narrow photovoltaic cell bar per bar
It is all connected with a digital display device.
The end of aforesaid high-temperature resistance plastice pipe is installed by small fan.
Aforesaid light radiation strength measurement module terminal edge is co-axially mounted refrigerating fan, and refrigerating fan is by motor
Drive.
The narrow photovoltaic cell bar of aforesaid N bars in light radiation strength measurement module has identical physical chemistry
Characteristic, the size of N depend on the requirement of certainty of measurement.
In groove type solar thermal-collecting tube, the measuring method of metal tube surface radiant intensity measurement device, comprises the following steps：
(1) surface of the vacuum heat collection pipe that sunray is focused on by trough type solar heat-collector using slot-type optical collector
On, during the sun rises in east and drop in west, rim ray can be produced at the edge of slot-type optical collector；
(2) rim ray first passes through glass tubing, then is irradiated to glass through being reflected into light radiation strength measurement module
On the narrow photovoltaic cell bar of the N bars of the plastics tube outer surface in glass pipe, produce electric potential difference on the narrow photovoltaic cell bar per bar, i.e., narrow
The solar radiant energy of rim ray is converted to the signal of telecommunication by photovoltaic cell bar, and is shown by digital display device；
(3) by contrasting the signal of telecommunication of narrow photovoltaic cell bar on plastic tube circumference diverse location so as to obtaining vacuum heat collection pipe
The light radiation intensity of middle metal tube surface diverse location；
(4) while, the electricity that the narrow photovoltaic cell bar in light radiation strength measurement module is produced drives the light radiation
The refrigerating fan rotation of strength measurement module terminal edge is so as to giving light radiation strength measurement module refrigeration；
(5) wind that refrigerating fan is produced drives the small fan of light radiation strength measurement module plastics pipe end coaxially to turn
Dynamic, so as to drive narrow photovoltaic cell bar group slowly to rotate.
Compared with prior art, innovative point of the invention have following some：1. groove type solar sufficiently and reasonably make use of
The rim ray that heat collector is produced, is radiated at generation electric energy on narrow photovoltaic cell bar using the light intensity of rim ray；2. by metal
The circumferential light radiation intensity-conversion of pipe surface is into the signal of telecommunication；3. present configuration is compact, it is not necessary to additionally install a large amount of supports,
Metal tube surface light radiation intensity can be measured in real time with numerical monitor；4. the electricity for making full use of photovoltaic cell bar to produce drives
Dynamic refrigerating fan rotates and freezes to light radiation strength measurement module and drive the plastic tube of light radiation strength measurement module to delay
Slow-speed is moved, and prevents photovoltaic cell bar to be burned out.
Description of the drawings
Fig. 1 is metal tube surface radiant intensity measurement structure drawing of device in groove type solar thermal-collecting tube of the invention；
Fig. 2 is metal tube surface radiant intensity measurement device index path in groove type solar thermal-collecting tube of the invention；
Fig. 3 is metal tube surface radiant intensity measurement device top view in groove type solar thermal-collecting tube of the invention；
Fig. 4 is the glide path figure of the light radiation strength measurement module sectional view of the present invention and cooling wind；
Fig. 5 is the scattergram of narrow photovoltaic cell bar in the light radiation strength measurement module of the present invention.
In figure：1. slot-type optical collector, 2. vacuum heat collection pipe, 3. light radiation strength measurement module, 4. refrigerating fan, 5. counts
Aobvious device, 6. motor, 7. narrow photovoltaic cell bar, 8. insulating barrier, 9. plastic tube, 10. glass tubing, 11. small fans, 12. sides
Edge light, 13. sunrays that can be received by vacuum heat collection pipe.
Specific embodiment
The present invention is described in further detail in conjunction with the drawings and specific embodiments.
As shown in figures 1 and 3, light radiation strength meter of the invention mainly includes slot-type optical collector 1, vacuum collection
Heat pipe 2, light radiation strength measurement module 3, refrigerating fan 4 and digital display device 5.Wherein,
Slot-type optical collector 1 is the groove type paraboloid being spliced by polylith arc curve mirror, and vacuum heat collection pipe 2 is poly- positioned at slot type
The top of light device 1, and the axis of vacuum heat collection pipe 2 overlapped with the focus of groove type paraboloid, 2 general employing steel of vacuum heat collection pipe
The rotary shaft of frame structure and slot-type optical collector 1 is fixed.
Marginal position on trough type solar heat-collector both sides is symmetrically installed a steelframe, the quoit of the steelframe upper end with true
Empty set heat pipe 2 is concentric, and installs light radiation strength measurement module 3 on the steelframe.
As shown in Fig. 3, Fig. 4 and Fig. 5, light radiation strength measurement module 3 is transformed by vacuum heat collection pipe, has 2, right
Claim ground installed in the extending part at 2 two ends of vacuum heat collection pipe, light radiation strength measurement module 3 is by narrow photovoltaic cell bar 7, plastics
Pipe 9, glass tubing 10 and small fan 11 are constituted, and the axis of light radiation strength measurement module 3 is coaxial with vacuum heat collection pipe 2.Wherein,
Plastic tube 9 is set in glass tubing 10, a layer insulating 8 is coated in the outer surface of plastic tube 9, circumferential in the outer surface of plastic tube 9
The narrow photovoltaic cell bar of even attaching N bars, the end of plastic tube 9 install small fan 11.The light radiation strength measurement module of the present invention
It is to be replaced mitigating weight by the metal tube in vacuum heat collection pipe with resistant to elevated temperatures plastic tube.It is arranged on light radiation ionization meter
There are the narrow photovoltaic cell bar 7 of N bars in module 3 identical physicochemical characteristicss, the size of N to depend on the requirement of certainty of measurement,
Certainty of measurement requirement is higher, and the value of N is bigger, such as takes N=12 in a particular embodiment of the present invention.
Per bar, the output of narrow photovoltaic cell bar 7 is all connected with a digital display device 5.
For preventing the rim ray 12 after focusing on from burning narrow photovoltaic cell bar 7, in 3 end of light radiation strength measurement module
Edge is co-axially mounted refrigerating fan 4, and so, light radiation strength measurement module 3, refrigerating fan 4 are coaxial with vacuum heat collection pipe 2
The heart, refrigerating fan 4 are driven by motor 6, make the air flow in light radiation strength measurement module 3, so as to narrow photovoltaic
Cell strip is lowered the temperature.
The wind that refrigerating fan 4 is produced can drive the small fan 11 on the plastic tube 9 of light radiation strength measurement module 3 coaxial
Rotate, so as to drive narrow photovoltaic cell bar group slowly to rotate.
Rim ray is radiated on the narrow photovoltaic cell bar 7 of diverse location and will produce potential in narrow photovoltaic cell bar 7
Difference, on the one hand can be rotated using the electrical energy drive refrigerating fan 4 that these narrow photovoltaic cell bars 7 are produced, in addition, narrow photovoltaic cell
Bar 7 is connected with digital display device 5, can be shown the electric potential difference of the narrow photovoltaic cell bar 7 of circumferential diverse location, by digital display
Numeral on device 5 understands the light radiation intensity of 9 circumferential diverse location of plastic tube, is also equivalent to metal in vacuum heat collection pipe
Irradiation intensity on pipe.
The operation principle labor of the present invention is as follows：The sun is on high in operation process, due to cannot moment direct projection collection
The slot-type optical collector 1 of hot device, just has some light in the edge of slot-type optical collector 1 and cannot be irradiated to vacuum heat collection pipe 2
On, here it is so-called rim ray 12, as shown in Figure 2.Using the rim ray 12, will be reflected to beyond vacuum heat collection pipe 2
Sunlight be used for measure metal tube surface in vacuum heat collection pipe 2 light radiation intensity be the present invention central principle.Pass through
The light radiation intensity of real-time measurement 9 circumference of plastic tube of digital display device 5, is also equivalent to metal tube surface in vacuum heat collection pipe 2
Light radiation intensity.Meanwhile, in order to the sunray after preventing narrow photovoltaic cell bar 7 to be focused burns, using narrow photovoltaic electric
The electric energy that pond bar 7 is produced freezes to narrow photovoltaic cell bar 7 and drives narrow photovoltaic cell bar group slow driving refrigerating fan 4 to rotate
Rotate.
The present invention specific works engineering be：
(1) vacuum heat collection pipe 2 that sunray is focused on by trough type solar heat-collector using larger slot-type optical collector 1
Surface on.For east-west direction tracks the slot-type optical collector 1 of the sun, during the sun rises in east and drop in west, in slot light collection
The edge of device 1 will produce rim ray 12 from west to the east；For the slot-type optical collector 1 of North and South direction arrangement, heat collector
The real-time tracking sun, also can produce rim ray 12 in the marginal position at 2 two ends of vacuum heat collection pipe from east to west.Rim ray 12
It is difficult to utilized by vacuum heat collection pipe 2, typically count the heat loss source of vacuum heat collection pipe 2, the rim ray 12 with focus on true
The sunray 13 that can be received by vacuum heat collection pipe on empty set heat pipe 2 has on all four property, using the rim ray
12 not only can measure the light radiation intensity focused on 2 metal tube surface of vacuum heat collection pipe, and can be by the part
Loss light is used so as to reducing the total losses of system.
(2) rim ray 12 is through being reflected into light radiation strength measurement module 3, first passes through glass tubing 10, then according to
On the narrow photovoltaic cell bar 7 of the N bars of 9 outer surface of plastic tube being mapped in glass tubing 10, producing on narrow photovoltaic cell bar per bar
The solar radiant energy of rim ray is converted to the signal of telecommunication by electric potential difference, i.e., narrow photovoltaic cell bar, and is shown by digital display device 5.
(3) by contrasting the signal of telecommunication of narrow photovoltaic cell bar on plastic tube circumference diverse location so as to obtaining vacuum heat collection pipe
The light radiation intensity of middle metal tube surface diverse location.
(4) while, the electricity that the narrow photovoltaic cell bar 7 in light radiation strength measurement module 3 is produced drives the illumination spoke
The refrigerating fan 4 for penetrating 3 terminal edge of strength measurement module is rotated so as to giving light radiation strength measurement module refrigeration.
(5) wind that refrigerating fan 4 is produced can drive the small fan 11 on light radiation strength measurement module plastic tube coaxial
Rotate, so as to drive narrow photovoltaic cell bar group slowly to rotate, the sunray after preventing narrow photovoltaic cell bar 7 to be focused burns.
Claims (5)
1. metal tube surface radiant intensity measurement device in groove type solar thermal-collecting tube, it is characterised in that including slot-type optical collector,
Vacuum heat collection pipe, light radiation strength measurement module, refrigerating fan and digital display device；Wherein, the slot-type optical collector is by many
The groove type paraboloid that block arc curve mirror is spliced, the vacuum heat collection pipe are located at the top of slot-type optical collector, and described true
The axis of empty set heat pipe is overlapped with the focus of groove type paraboloid, and the vacuum heat collection pipe is using steel frame construction and slot-type optical collector
Rotary shaft is fixed；
Marginal position on trough type solar heat-collector both sides is symmetrically installed steelframe, and steelframe upper end sets quoit and and vacuum heat-collecting
Pipe is concentric, is symmetrically installed light radiation strength measurement module on steelframe；The light radiation strength measurement module is by narrow light
Volt cell strip, glass tubing, high-temperature resistance plastice pipe and small fan are constituted, and the axis of the light radiation strength measurement module with true
Empty set heat pipe is coaxial, wherein, sets high-temperature resistance plastice pipe in glass tubing, coats one layer of insulation in the outer surface of high-temperature resistance plastice pipe
Layer, in the narrow photovoltaic cell bar of the circumferential uniformly attaching N bars of the outer surface of high-temperature resistance plastice pipe；Per bar, the output of narrow photovoltaic cell bar is equal
One digital display device of connection.
2. metal tube surface radiant intensity measurement device in groove type solar thermal-collecting tube according to claim 1, its feature
It is, small fan is installed in the end of the high-temperature resistance plastice pipe.
3. metal tube surface radiant intensity measurement device in groove type solar thermal-collecting tube according to claim 1, its feature
It is, the light radiation strength measurement module terminal edge is co-axially mounted refrigerating fan, and refrigerating fan is driven by motor.
4. metal tube surface radiant intensity measurement device in groove type solar thermal-collecting tube according to claim 1, its feature
It is, described installed in light radiation strength measurement module（3）The narrow photovoltaic cell bar of interior N bars（7）Have identical physico
Characteristic is learned, the size of N depends on the requirement of certainty of measurement.
5. in groove type solar thermal-collecting tube as claimed in any of claims 1 to 4, metal tube surface radiant intensity is surveyed
The measuring method of amount device, it is characterised in that comprise the following steps：
（1）On the surface of the vacuum heat collection pipe that sunray is focused on by trough type solar heat-collector using slot-type optical collector,
During the sun rises in east and drop in west, rim ray can be produced at the edge of slot-type optical collector；
（2）Rim ray first passes through glass tubing, then is irradiated to glass tubing through being reflected into light radiation strength measurement module
On the narrow photovoltaic cell bar of the N bars of interior plastics tube outer surface, electric potential difference is being produced per bar on narrow photovoltaic cell bar, i.e., narrow photovoltaic
The solar radiant energy of rim ray is converted to the signal of telecommunication by cell strip, and is shown by digital display device；
（3）Golden in vacuum heat collection pipe so as to obtain by the signal of telecommunication for contrasting narrow photovoltaic cell bar on plastic tube circumference diverse location
The light radiation intensity of category pipe surface diverse location；
（4）Meanwhile, the electricity that the narrow photovoltaic cell bar in light radiation strength measurement module is produced drives the light radiation intensity
The refrigerating fan rotation of measurement module terminal edge is so as to giving light radiation strength measurement module refrigeration；
（5）The wind that refrigerating fan is produced drives the small fan of light radiation strength measurement module plastics pipe end to rotate coaxially, from
And drive narrow photovoltaic cell bar group slowly to rotate.
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| CN201510438333.7A CN105066484B (en) | 2015-07-23 | 2015-07-23 | Metal tube surface radiant intensity measurement device and method in groove type solar thermal-collecting tube |
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| CN105066484B true CN105066484B (en) | 2017-03-15 |
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| CN106016793B (en) * | 2016-07-08 | 2018-08-07 | 张正文 | A kind of groove type solar holder and its installation method based on gravity principle |
| CN106091425A (en) * | 2016-08-11 | 2016-11-09 | 南京索乐优节能科技有限公司 | Asymmetric groove type solar heat collector in conjunction with glass sunlight house |
| CN107588970B (en) * | 2017-09-05 | 2019-05-24 | 河海大学常州校区 | A kind of adjustment method of the adaptive groove type heat collector testboard in Multifunctional reflective face |
| CN110108050B (en) * | 2019-06-06 | 2023-11-21 | 中国能源建设集团陕西省电力设计院有限公司 | Parabolic heat collection light spot energy and heat flux density measurement system and method |
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| CN201149660Y (en) * | 2008-01-16 | 2008-11-12 | 重庆大学 | Apparatus for tracking disc-shaped solar collector |
| WO2011154872A1 (en) * | 2010-06-08 | 2011-12-15 | Donato Vincenzi | Opto-electronic system for radiometric measurements |
| SK1012013A3 (en) * | 2013-11-12 | 2015-06-02 | Technická Univerzita V Košiciach, Fakulta Výrobných | Sensing probe of perpendicular solar radiation and method of sensing |
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