CN105004074B - A kind of trough type solar heat-collector and control method with thermal-collecting tube self-checking device - Google Patents
A kind of trough type solar heat-collector and control method with thermal-collecting tube self-checking device Download PDFInfo
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- CN105004074B CN105004074B CN201510438135.0A CN201510438135A CN105004074B CN 105004074 B CN105004074 B CN 105004074B CN 201510438135 A CN201510438135 A CN 201510438135A CN 105004074 B CN105004074 B CN 105004074B
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- thermal
- collecting tube
- photovoltaic cell
- mobile device
- collector
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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
The invention discloses a kind of trough type solar heat-collector and method with thermal-collecting tube self-checking device, trough type solar heat-collector includes slot type reflecting mirror, thermal-collecting tube and thermal-collecting tube self-checking device, thermal-collecting tube self-checking device includes accuracy detection module, data acquisition and calculating feedback module, horizontal mobile device, wherein, accuracy detecting device is a cavity type heat extractor, concavees lens are installed in lower surface, photovoltaic cell bar is installed in interior upper wall surface, rim ray is reflexed to, when thermal-collecting tube installation site deviation, the electric potential difference that different photovoltaic cell bars send would not be arranged with thermal-arrest tube axis line as axial symmetry, the electric potential difference is carried out data acquisition and calculating, horizontal mobile device is finally fed back to, thermal-collecting tube is adjusted to normal place by horizontal mobile device.The present invention can real-time monitoring and the skew situation of feedback thermal-collecting tube, and be finally automatically adjusted to ideal position.
Description
Technical field
The present invention relates to solar thermal collector technical field, specifically, is to be related to one kind to automatically adjust with thermal-collecting tube
The trough type solar heat-collector of device and method.
Background technology
Trough type solar heat-collector is current degree of commercialization highest light-concentrating solar heat-collection device.Groove type solar thermal-arrest
Solar radiant energy is reflexed to thermal-arrest tube outer surface using high reflectance slot type reflecting surface by device.Trough type solar heat-collector reflecting surface
A groove type paraboloid is combined into using polylith arc curve mirror typically.Meanwhile, thermal-collecting tube is located above parabola, typically adopts steelframe
Structure is connected with rotary shaft.It is difficult to ensure that the installation accuracy of thermal-collecting tube in installation process.In addition, there is sun scattering spoke
Penetrate and thermal-collecting tube is present compared with Large Diameter Pipeline, fall.Poly- in large-scale slot type
During light device or multiple slot-type optical collector series operations, it is difficult to ensure that the linearity of thermal-collecting tube.This is accomplished by a kind of detection
The apparatus and method of trough type solar heat-collector installation accuracy.Existing detection trough type solar heat-collector thermal-collecting tube installation accuracy
Method is usually using intuitively ocular estimate, it is impossible to the accurate installation accuracy for obtaining thermal-collecting tube.In trough type solar heat-collector reality
In the running of border, slot type reflecting surface and thermal-collecting tube follow position of sun to rotate under the drive of drive shaft, are rotating
The skew of thermal-collecting tube is likely to result in journey.Therefore, a kind of trough type solar heat-collector thermal-collecting tube self-checking device is needed badly.
Content of the invention
In order to overcome the shortcomings of existing visual inspection techniques, the invention provides a kind of groove with thermal-collecting tube self-checking device
Formula solar thermal collector and method, are capable of the skew situation of on-line real time monitoring thermal-collecting tube, by thermal-collecting tube skew situation with directly perceived
Show, and thermal-collecting tube is automatically adjusted to ideal position using horizontal mobile device.
A kind of trough type solar heat-collector with thermal-collecting tube self-checking device, trough type solar heat-collector include slot type
Reflecting mirror, thermal-collecting tube and thermal-collecting tube self-checking device, thermal-collecting tube self-checking device include accuracy detection module, data acquisition
With calculating feedback module, horizontal mobile device；The slot type reflecting mirror is the groove type paraboloid that polylith arc curve mirror is combined,
The thermal-collecting tube is located at the top of slot type reflecting mirror, is connected with the rotary shaft of slot type reflecting mirror using steel frame construction；Described
Thermal-collecting tube two ends are fixed on horizontal mobile device；One support, the support and thermal-arrest are installed at trough type solar heat-collector edge
Pipe is in same axle center line position, and installs a flat board in the support with slot type mirror parallel position, installs on the flat board
Accuracy detection module；The accuracy detection module is a cavity type heat extractor structure, positioned at the extending part of thermal-collecting tube and described
The center of accuracy detection module is located in thermal-arrest tube axis line；The accuracy detection module openings are downward, lower surface light
Concavees lens are installed in porch, and the inside cavity upper surface of accuracy detection module installs photovoltaic cell bar；The photovoltaic cell bar with
Thermal-arrest tube axis line is arranged to 2 groups for axial symmetry, and per group includes equal number of a plurality of photovoltaic cell bar, per group of photovoltaic electric
Connect between the bar of pond, the then output of every group of photovoltaic cell bar connects data acquisition by data wire and calculates feedback module；
The data acquisition and calculating feedback module gather the potential difference signal of 2 groups of photovoltaic cell bars outputs, and are compared calculating, obtain
To the difference signal of telecommunication of the potential difference signal of 2 groups of photovoltaic cell bar outputs, then the difference signal of telecommunication is converted into transversal displacement, and
Amplify, be then converted to the drive signal of horizontal mobile device；The data acquisition and calculating feedback module and horizontal mobile device
Between connected by holding wire.
Aforesaid accuracy detection module has 2, is located at the extending part at thermal-collecting tube two ends respectively.
Each of aforesaid two groups of photovoltaic cell bars has identical physicochemical characteristicss.
The cavity of aforesaid accuracy detection module, equal blacking in addition to upper and lower surface.
Aforesaid horizontal mobile device passes through Motor drive.
The method that trough type solar heat-collector with thermal-collecting tube self-checking device carries out thermal-collecting tube regulation, including following
Step：
(1) trough type solar heat-collector was assembled sunray to thermal-collecting tube using slot type reflecting mirror, on the sun one day
Rise in east and drop in west during, the edge of slot type reflecting mirror produces rim ray；
(2) rim ray is irradiated into accuracy detection module, is scattered by concavees lens first, rim ray is decomposed into and is had
The sunlight band of one fixed width；
(3) sunlight band is irradiated on 2 groups of photovoltaic cell bars of accuracy detection module cavity upper surface, produces 2 potentials
The solar radiation of sunlight band is converted to the signal of telecommunication by difference signal, i.e. photovoltaic cell bar；
(4) above-mentioned 2 potential difference signals are collected and are calculated the difference signal of telecommunication by data acquisition and calculating feedback module,
The difference signal of telecommunication is converted into transversal displacement again, and is amplified, be then converted to the drive signal of horizontal mobile device；
(5) horizontal mobile device drives thermal-collecting tube to reach ideal position, specially under the driving of motor：Due to precision
The center of detection module is located in thermal-arrest tube axis line, if thermal-collecting tube installs correct, generation on 2 groups of photovoltaic cell bars
Electric potential difference be arranged symmetrically with thermal-arrest tube axis line as axis of symmetry two ends, now data acquisition and calculate feedback module collect this
2 potential difference signals, it is 0 to calculate the difference signal of telecommunication, then transversal displacement is 0, then do not produce horizontal mobile device
Drive signal, horizontal mobile device are remained stationary as；If the electric potential difference of 2 groups of photovoltaic cell bars is unequal, then can determine that thermal-collecting tube
Ideal position is not at, if thermal-collecting tube offsets to one side, the electricity produced on this group of photovoltaic cell bar of the side can be caused
Potential difference reduces, and the electric potential difference of the generation of opposite side increases, and now needs thermal-collecting tube to bigger than normal that of photovoltaic cell bar electric potential difference
One side shifting of group, now data acquisition and calculating feedback module collect 2 potential difference signals, calculate difference telecommunications
Number, the drive signal of horizontal mobile device is reconverted into, horizontal mobile device is fed back to, and horizontal mobile device is made in the drive of motor
Thermal-collecting tube, so as to drive the thermal-collecting tube being fixed thereon to move, is adjusted to ideal position by dynamic lower movement.
Compared with prior art, the invention has the beneficial effects as follows：Trough type solar heat-collector is sufficiently and reasonably make use of to produce
Raw rim ray, judges the installation accuracy of thermal-collecting tube, and the light intensity using rim ray using the light distribution of rim ray
Produce electric energy and thermal-collecting tube side-play amount is converted into the signal of telecommunication, the side-play amount that is installed using the signal of telecommunication Real-time Feedback thermal-collecting tube, and
Deviation signal is collected process, horizontal mobile device is fed back to and is driven thermal-collecting tube to run to ideal position.Present configuration
Compact, take full advantage of the unserviceable sunray in groove type heat collector edge, it is not necessary to which a large amount of supports are additionally installed, can be with
Indicator or pointer display mode real-time monitoring and the skew situation for feeding back thermal-collecting tube, and final adjust automatically solar energy heating
Pipe ideal position.
Description of the drawings
Fig. 1 is the trough type solar heat-collector structure chart with thermal-collecting tube self-checking device of the invention；
Fig. 2 is trough type solar heat-collector thermal-collecting tube self-checking device index path of the present invention；
Fig. 3 is trough type solar heat-collector thermal-collecting tube self-checking device top view of the present invention；
Fig. 4 is accuracy detection module sectional view of the present invention；
Fig. 5 is photovoltaic cell bar top view in accuracy detection module of the present invention.
In figure：1. slot type reflecting mirror, 2. thermal-collecting tube, 3. accuracy detection module, 4. rim ray, 5. can be received by thermal-collecting tube
Sunray, 6. data acquisition and calculate feedback module, 7. concavees lens, 8. photovoltaic cell bar, 9. thermal-arrest tube axis line, 10.
Horizontal mobile device.
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, the trough type solar heat-collector with thermal-collecting tube self-checking device of the invention includes groove
Formula reflecting mirror 1, thermal-collecting tube 2, accuracy detection module 3, data acquisition and calculating feedback module 6 and horizontal mobile device 10；Its
In, the groove type paraboloid that slot type reflecting mirror 1 is combined for polylith arc curve mirror, thermal-collecting tube 2 are located at the upper of slot type reflecting mirror 1
Side, is typically connected with the rotary shaft of slot type reflecting mirror 1 using steel frame construction.The two ends of thermal-collecting tube 2 are fixed on transverse shifting
On device 10, one support is installed at trough type solar heat-collector edge, the support is in same axle center line position with thermal-collecting tube 2,
And one flat board, installation accuracy detection module 3 on the flat board are installed in the support with 1 parallel position of slot type reflecting mirror.
As shown in Fig. 3, Fig. 4 and Fig. 5, accuracy detection module 3 is a cavity type heat extractor structure, with 2 coaxial peace of thermal-collecting tube
Dress, positioned at the extending part at 2 two ends of thermal-collecting tube, the center of accuracy detection module 3 is located in thermal-arrest tube axis line 9.Precision
Open Side Down for detection module 3, at its lower surface light entrance installs concavees lens 7, and its inside cavity upper surface is with thermal-collecting tube axle
Heart line is arranged symmetrically two groups of photovoltaic cell bars 8 of installation for axis of symmetry two ends, and per group includes a plurality of photovoltaic cell bar, per group of photovoltaic
Connect between cell strip, export a potential difference signal, every group of photovoltaic cell bar 8 is connected data acquisition and meter with data wire
The potential difference signal for calculating feedback module 6, data acquisition and the calculating 2 groups of photovoltaic cell bars of collection of feedback module 6 carries out electric potential difference ratio
Compared with the difference signal of telecommunication is calculated, the difference signal of telecommunication is converted into transversal displacement, and signal is amplified, be converted into transverse shifting
The drive signal of device 10, is connected by holding wire between data acquisition and calculating feedback module 6 and horizontal mobile device 10.Peace
The a plurality of photovoltaic cell bar 8 being mounted in accuracy detection module 3 has identical physicochemical characteristicss.Sunlight is not being shared the same light
Electric potential difference will be produced in photovoltaic cell bar on volt cell strip, on the one hand can utilize the electricity that these photovoltaic cell bars are produced
Can, on the other hand by potential difference signal is collected process, feed back to horizontal mobile device and drive thermal-collecting tube operation famous dictum
Think position.The cavity of accuracy detection module 3, remainder blacking in addition to upper and lower surface are multiple in cavity to reduce light
Reflection.
The operation principle labor of the present invention is as follows：The sun is on high in motor process due to cannot moment direct projection slot type
Heat collector reflecting mirror 1, just has some light in 1 marginal portion of slot type reflecting mirror and cannot be irradiated on thermal-collecting tube 2, here it is groove
The rim ray 4 of formula solar thermal collector, as shown in Figure 2.Using the rim ray 4, the solar energy outside thermal-collecting tube 2 is will be reflected to
It is used for demarcating thermal-collecting tube 2.Accuracy detecting device 3 is co-axially mounted in 2 epitaxial part of thermal-collecting tube, the accuracy detecting device 3 is using recessed
The solar radiation of former high intensity is scattered to a plane by lens 7, is installed 2 groups of symmetrical photovoltaic cells 8 on this plane, is worked as groove
Formula reflecting mirror 1 is installed when shifting, and the light distribution intensity reflexed on thermal-collecting tube 2 will change, and scatter to 2 groups of light
Light distribution intensity on volt cell strip 8 causes 2 groups of photovoltaic cell bars 8 with changing using different light distribution intensities
Produce electric potential difference difference and can produce difference, process is collected by data acquisition with feedback module 6 is calculated, by process signal
Transmit to horizontal mobile device 10, horizontal mobile device 10 drives thermal-collecting tube 2 to move to ideal position by Motor drive.
The present invention specific works engineering be：Trough type solar heat-collector utilizes larger slot type reflecting mirror 1 by sunlight
Line is assembled to the less thermal-collecting tube 2 of area.For the slot type reflecting mirror 1 of east-west direction, the sun was risen in east and drop in west in one day,
The edge of slot type reflecting mirror 1 will produce rim ray 4 from west to the east；For the slot type reflecting mirror 1 of North and South direction arrangement,
Heat collector tracked the sun among one day from east to west, also can produce rim ray 4 at the top of thermal-collecting tube 2 or bottom.Should
Rim ray 4 is difficult to be utilized by thermal-collecting tube 2, generally the heat loss source of thermal-collecting tube.The rim ray 4 with gather thermal-collecting tube
On the sunray 5 that can be received by thermal-collecting tube have on all four property, make full use of the rim ray 4 not only can milli
Unbiased poorly reflects the characteristic for gathering the sunray 5 that can be received by thermal-collecting tube on thermal-collecting tube face, it is also possible to by the part
Loss is used so as to reducing the total losses of system.
Rim ray 4 is irradiated into accuracy detection module 3, is scattered by concavees lens 7 first, and rim ray 4 is decomposed into tool
There is the sunlight band of one fixed width, it is therefore intended that reduce unit area solar radiation energy-flux density, protection photovoltaic cell bar 8.
Sunlight band is irradiated on 2 groups of photovoltaic cell bars of accuracy detection module cavity upper surface, produces 2 electric potential difference letters
Number, i.e., the solar radiation of sunlight band is converted to the signal of telecommunication by photovoltaic cell bar；
The difference signal of telecommunication is collected and be calculated to 2 potential difference signals by data acquisition and calculating feedback module, then will
The difference signal of telecommunication is converted into transversal displacement, and amplifies, and is then converted to the drive signal of horizontal mobile device；
Horizontal mobile device drives thermal-collecting tube 2 to reach ideal position, specially under the driving of motor：In theory due to
The center of accuracy detection module 3 is located in thermal-arrest tube axis line 9, if thermal-collecting tube 2 is installed correctly, in 2 groups of photovoltaic cells
The electric potential difference produced on bar is arranged symmetrically with thermal-arrest tube axis line 9 as axis of symmetry two ends, and mould is fed back in now data acquisition and calculating
Block 6 collects this 2 potential difference signals, and it is 0 to calculate the difference signal of telecommunication, then transversal displacement is 0, then do not produce laterally
The drive signal of mobile device, horizontal mobile device are remained stationary as；If the electric potential difference of 2 groups of photovoltaic cell bars is unequal, then may be used
Judge that thermal-collecting tube 2 is not at ideal position, if thermal-collecting tube 2 offsets to one side, can cause on the photovoltaic cell bar of the side
The electric potential difference of generation reduces, and the electric potential difference of the generation of opposite side increases, and now needs thermal-collecting tube 2 to photovoltaic cell bar electric potential difference
That one side shifting of group bigger than normal, now data acquisition and calculating feedback module 6 collect 2 potential difference signals, calculate
The difference signal of telecommunication, is reconverted into the drive signal of horizontal mobile device, feeds back to horizontal mobile device, makes horizontal mobile device exist
Move under the driving of motor, so as to drive the thermal-collecting tube being fixed thereon to move, thermal-collecting tube is adjusted to ideal position.
Claims (6)
1. a kind of trough type solar heat-collector with thermal-collecting tube self-checking device, it is characterised in that groove type solar thermal-arrest
Device includes that slot type reflecting mirror, thermal-collecting tube and thermal-collecting tube self-checking device, thermal-collecting tube self-checking device include accuracy detection mould
Block, data acquisition and calculating feedback module, horizontal mobile device；The slot type reflecting mirror is that polylith arc curve mirror is combined
Groove type paraboloid, the thermal-collecting tube are located at the top of slot type reflecting mirror, are connected using rotary shaft of the steel frame construction with slot type reflecting mirror
Integral；The thermal-collecting tube two ends are fixed on horizontal mobile device；One support is installed at trough type solar heat-collector edge, should
Support is in same axle center line position with thermal-collecting tube, and installs a flat board in the support with slot type mirror parallel position, at this
Installation accuracy detection module on flat board；The accuracy detection module is a cavity type heat extractor structure, positioned at the extension of thermal-collecting tube
Position, and the center of the accuracy detection module is in thermal-arrest tube axis line；The accuracy detection module openings are downward,
Concavees lens are installed at lower surface light entrance, the inside cavity upper surface of accuracy detection module installs photovoltaic cell bar；The light
Volt cell strip is arranged to 2 groups with thermal-arrest tube axis line as axial symmetry, and per group includes equal number of a plurality of photovoltaic cell bar, per
Connect between the photovoltaic cell bar of group, the then output of every group of photovoltaic cell bar connects data acquisition and calculating by data wire
Feedback module；The data acquisition and calculating feedback module gather the potential difference signal of 2 groups of photovoltaic cell bars outputs, and are compared
Compared with calculating, the difference signal of telecommunication of the potential difference signal of 2 groups of photovoltaic cell bar outputs is obtained, then the difference signal of telecommunication is converted into laterally
Side-play amount, and amplify, it is then converted to the drive signal of horizontal mobile device；The data acquisition and calculate feedback module with horizontal
Connected by holding wire between mobile device.
2. a kind of trough type solar heat-collector with thermal-collecting tube self-checking device according to claim 1, its feature
It is, the accuracy detection module there are 2, is located at the extending part at thermal-collecting tube two ends respectively.
3. a kind of trough type solar heat-collector with thermal-collecting tube self-checking device according to claim 1, its feature
It is, each of two groups of photovoltaic cell bars has identical physicochemical characteristicss.
4. a kind of trough type solar heat-collector with thermal-collecting tube self-checking device according to claim 1, its feature
It is, the cavity of the accuracy detection module, equal blacking in addition to upper and lower surface.
5. a kind of trough type solar heat-collector with thermal-collecting tube self-checking device according to claim 1, its feature
It is, the horizontal mobile device passes through Motor drive.
6. the trough type solar heat-collector with thermal-collecting tube self-checking device in claim 1 to 5 described in any one enters
The method that row thermal-collecting tube is adjusted, it is characterised in that comprise the following steps：
(1) trough type solar heat-collector is assembled sunray to thermal-collecting tube using slot type reflecting mirror, in the sun east of one day
During liter west falls, the edge of slot type reflecting mirror produces rim ray；
(2) rim ray is irradiated into accuracy detection module, is scattered by concavees lens first, rim ray is decomposed into and is had necessarily
The sunlight band of width；
(3) sunlight band is irradiated on 2 groups of photovoltaic cell bars of accuracy detection module cavity upper surface, produces 2 electric potential difference letters
Number, i.e., the solar radiation of sunlight band is converted to the signal of telecommunication by photovoltaic cell bar；
(4) the difference signal of telecommunication is collected and be calculated to above-mentioned 2 potential difference signals by data acquisition and calculating feedback module, then will
The difference signal of telecommunication is converted into transversal displacement, and amplifies, and is then converted to the drive signal of horizontal mobile device；
(5) horizontal mobile device drives thermal-collecting tube to reach ideal position, specially under the driving of motor：Due to accuracy detection
The center of module is located in thermal-arrest tube axis line, if thermal-collecting tube installs correct, to produce on 2 groups of photovoltaic cell bars electricity
Potential difference is arranged symmetrically with thermal-arrest tube axis line as axis of symmetry two ends, and now data acquisition and calculating feedback module collect this 2
Potential difference signal, it is 0 to calculate the difference signal of telecommunication, then transversal displacement is 0, then do not produce the driving of horizontal mobile device
Signal, horizontal mobile device are remained stationary as；If the electric potential difference of 2 groups of photovoltaic cell bars is unequal, then can determine that thermal-collecting tube is not located
In ideal position, if thermal-collecting tube offsets to one side, the electric potential difference produced on this group of photovoltaic cell bar of the side can be caused
Reduce, the electric potential difference of the generation of opposite side increases, now need thermal-collecting tube to photovoltaic cell bar electric potential difference that group one bigger than normal
Side shifting, now data acquisition and calculating feedback module collect 2 potential difference signals, calculate the difference signal of telecommunication, then
The drive signal of horizontal mobile device is converted to, horizontal mobile device is fed back to, horizontal mobile device is made under the driving of motor
Mobile, so as to drive the thermal-collecting tube being fixed thereon to move, thermal-collecting tube is adjusted to ideal position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438135.0A CN105004074B (en) | 2015-07-23 | 2015-07-23 | A kind of trough type solar heat-collector and control method with thermal-collecting tube self-checking device |
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| CN201510438135.0A CN105004074B (en) | 2015-07-23 | 2015-07-23 | A kind of trough type solar heat-collector and control method with thermal-collecting tube self-checking device |
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| CN106403313B (en) * | 2016-11-21 | 2018-04-17 | 西北农林科技大学 | A kind of paraboloid trough type vertical shaft tracks solar thermal collector |
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| US454819A (en) * | 1891-06-23 | ellis | ||
| DE3731418A1 (en) * | 1987-08-21 | 1989-06-01 | Eugen Mihailescu | Automatically trackable solar-powered system of briefcase size |
| DE19931976A1 (en) * | 1999-07-09 | 2001-01-18 | Arnold Grimm | Solar energy generator for obtaining thermal and/or electrical energy deflects scattered radiation from total reflection optical elements towards absorber or photovoltaic system |
| US20110162637A1 (en) * | 2008-08-12 | 2011-07-07 | Harry Hahn | Lightweight low-cost solar concentrator |
| CN101539343B (en) * | 2009-04-14 | 2011-02-16 | 杨天博 | Non-intermittent real-time tracking solar energy light collecting drive mechanism and working method thereof |
| CN202630461U (en) * | 2012-06-18 | 2012-12-26 | 北京电影机械研究所 | One-dimension sun-tracking device of solar heat accumulator |
| CN204254913U (en) * | 2014-11-11 | 2015-04-08 | 刘庆云 | A kind of light for photo-thermal power generation departs from monitoring device |
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