CN106940571A - A kind of tower heliostat optically focused deviation sensor - Google Patents
A kind of tower heliostat optically focused deviation sensor Download PDFInfo
- Publication number
- CN106940571A CN106940571A CN201710243181.4A CN201710243181A CN106940571A CN 106940571 A CN106940571 A CN 106940571A CN 201710243181 A CN201710243181 A CN 201710243181A CN 106940571 A CN106940571 A CN 106940571A
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- Prior art keywords
- sensor
- lens barrel
- speculum
- heliostat
- mirror
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
Abstract
Speculum is moved the invention discloses a kind of tower heliostat optically focused deviation sensor, including sensor lens barrel and sensor, the light inlet of sensor lens barrel is located at sensor and moved above speculum, it is ensured that sensor moves speculum reflected light and injects sensor lens barrel light inlet；The heat dump of sensor lens barrel optical axis direction Zheng Dui centers tower top, does not rotate and changes with heliostat minute surface；Sensor moves speculum and is connected to by the dynamic mirror support of sensor in minute surface installation axle, and the sensor of installation moves speculum on heliostat pillar axis, and as heliostat minute surface is rotated, it is constant relative to heliostat minute surface that sensor moves speculum space angle；Sensor moves speculum and heliostat minute surface into 45 degree of angles；Lens barrel speculum and lens barrel bobbin axis are into 45 degree of angles；By the secondary reflection of speculum two, obtain and heliostat specular light direction identical lens barrel imaging incident light.And then offset by lens barrel imaging point, measurement specular light deviates the angle of assigned direction.
Description
Technical field
, can on-line measurement heliostat azimuth, elevation angle the present invention relates to a kind of tower heliostat optically focused deviation sensor
Deviate size.
Background technology
Tower solar-thermal generating system includes central tower and a large amount of heliostats built around central tower.Pacify at the top of central tower
Heat dump is put, the light of directive oneself is reflexed into heat dump per face heliostat.Because of sun altitude and azimuth anaplasia at any time
Change, elevation angle turntable and azimuth turntable are equipped between heliostat pillar and heliostat minute surface per face heliostat, is born respectively
Duty tracking sun altitude and azimuthal variation.Heliostat minute surface is connected on elevation angle turntable by minute surface installation axle, height
Angle turntable is arranged on the turntable of azimuth, drives heliostat minute surface to do vertical direction rotation, azimuth turntable is arranged on heliostat
At the top of column, elevation angle turntable and heliostat minute surface is driven to do horizontal direction rotation.
Accurately fall to ensure that heliostat is reflective in heat dump specified location, it is necessary to which heliostat optically focused angular deviation is less than
1mrad.In actual tower photo-thermal power station, heat dump setting height(from bottom) can reach more than 100m, and heliostat is away from central tower apart from reachable
To more than 1000m.Under the required precision, optically focused hot spot deviation of the farthest heliostat on heat dump still can exceed 1m with
On.
It is opened loop control that current heliostat, which follows the trail of position of sun process,.Heliostat is according to itself space relative to heat dump
Theoretical position of sun under position, and current time, calculates the minute surface direction needed for itself, and drive turntable to reach respective angles
Position.Because during without actual optically focused angle feed-back, heliostat optically focused angle precision is complete by column installation accuracy, turntable
The accuracy of manufacture and controller computational accuracy ensure.High technological requirement is brought to heliostat processing and manufacturing and installation accuracy,
Great challenge is proposed to controller operational reliability.
In heliostat actual moving process, every error is elapsed over time can still accumulate, and cause the optically focused of opened loop control
Precision is persistently deteriorated.Live heliostat enormous amount, to ensure optically focused stable accuracy, need to pay a large amount of manpowers at night to the settled date
Calibration is conducted batch-wise in mirror.
The control of heliostat optically focused is open loop approach.To reach heliostat optically focused accuracy requirement, to its accuracy of manufacture, essence is installed
Degree proposes high requirement, causes manufacturing cost high, and regular maintenance is complicated.
And open loop control mode can not solve the problems, such as error accumulation.Wear and tear with turntable mechanism, Climate and Environment Variation, control
Device calculation error accumulation etc., its optically focused precision runs down.Therefore need periodically to calibrate all heliostats, calibration can only be at night
Deng being carried out offline under power station not working condition.Efficiency of plant can be because optically focused deviation is accumulated and gradually reduces during calibrating twice.
The content of the invention
Purpose：In order to overcome the deficiencies in the prior art, the present invention provides a kind of tower heliostat optically focused deviation and passed
Sensor, realizes the closed loop feedback of heliostat optically focused angle, and on-line measurement heliostat optically focused error is simultaneously constantly corrected.
Technical scheme：In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of tower heliostat optically focused deviation sensor, it is characterised in that：Speculum is moved including sensor lens barrel and sensor, is passed
The light inlet of sensor lens barrel is located at sensor and moved above speculum, it is ensured that sensor moves speculum reflected light and injects sensor lens barrel
Light inlet；The heat dump of sensor lens barrel optical axis direction Zheng Dui centers tower top, does not rotate and changes with heliostat minute surface；
Sensor moves speculum and is connected to by the dynamic mirror support of sensor in minute surface installation axle, and the sensor of installation is moved
Speculum is on heliostat pillar axis, as heliostat minute surface is rotated, and sensor moves speculum space angle relative to the settled date
Mirror minute surface is constant；Sensor, which moves speculum, includes dynamic mirror mirror, moves mirror mirror and heliostat minute surface into 45 degree of angles；
Sensor lens barrel includes：Lens barrel body, photosurface, imaging len, speculum, light inlet；Lens barrel body includes lens barrel cylinder
Pipe and lens barrel vertical section, lens barrel bobbin and lens barrel vertical section are tubular, and both axis are orthogonal to link together；Lens barrel sheet
In vivo, speculum is installed in lens barrel bobbin and lens barrel vertical section junction, and speculum and lens barrel bobbin axis are into 45 degree of angles；Imaging is saturating
Mirror is arranged in lens barrel bobbin, and photosurface is placed in imaging len focal plane；Lens barrel vertical section bottom is provided with light inlet；
By sensor move speculum reflection light, pass sequentially through sensor lens barrel light inlet, speculum, imaging len it
After fall on photosurface；Photosurface is placed in imaging len focal plane, and incident sunshine is imaged as a hot spot；Deviateed according to hot spot
The distance at photosurface center, judges heliostat mirror space of planes angle deviating situation.
Preferably, described tower heliostat optically focused deviation sensor, it is characterised in that：The sensor is dynamic anti-
Penetrating mirror also includes dynamic speculum base；Dynamic mirror mirror moves mirror support by dynamic speculum floor installation in sensor
On.
Further, described tower heliostat optically focused deviation sensor, it is characterised in that：The dynamic speculum base is
Isosceles right triangle, moves mirror mirror and is arranged on hypotenuse, sensor moves mirror support and is arranged on triangle
Under base.
Preferably, described tower heliostat optically focused deviation sensor, it is characterised in that：The sensor lens barrel
Also include focusing mechanism, focusing mechanism is arranged on lens barrel bodies top, for realizing that lens barrel manually or automatically is directed at auxiliary.
Preferably, described tower heliostat optically focused deviation sensor, it is characterised in that：The sensor lens barrel
Installed by sensor lens cone frame and be connected to heliostat pillar, sensor lens barrel is adjusted by adjusting sensor lens cone frame
Space angle；After the completion of regulation, sensor lens cone frame structure is fixed, and sensor lens barrel space angle does not turn with heliostat minute surface
Move and change.
Preferably, described tower heliostat optically focused deviation sensor, it is characterised in that：The sensor lens barrel
Support one end connects sensor lens barrel, and the other end is connected on the wall of heliostat pillar side.
Further, the sensor lens cone frame is c-type structure.
Beneficial effect：The tower heliostat optically focused deviation sensor that the present invention is provided, with advantages below：1st, it can examine online
Determine the angle of the off-center tower heat dump of solar eyepiece reflected light.Coordinate heliostat controller, heliostat solar tracking can be achieved
Closed-loop control.2nd, introduce after Closed loop track control, the requirement of the heliostat accuracy of manufacture and maintaining requirement can be greatly reduced, reduced
Heliostat manufacturing cost.3rd, introduce after Closed loop track control, controller code reliability requirement can be reduced, improve controller operation
Stability.Also strong dependence of the controller to mirror field ionization source stability can be reduced.4th, introduce after Closed loop track control, can eliminate
The control accumulation of error between off-line calibration operation twice, improves optically focused precision, improves generating efficiency.
Brief description of the drawings
Fig. 1 and Fig. 2 is scheme of installation of the invention；
Fig. 3 is the structural representation that sensor moves speculum；
Fig. 4 is the structural representation of sensor lens barrel；
Fig. 5 is fundamental diagram of the invention；
In figure：Sensor lens barrel 1, sensor move the dynamic reflection of speculum 2, sensor lens cone frame 3, heliostat pillar 4, sensor
Mirror support 5, minute surface installation axle 6, elevation angle turntable 7, azimuth turntable 8, heliostat minute surface 9；
Lens barrel bobbin 11, lens barrel vertical section 12, light inlet 13, speculum 14, imaging len 15, photosurface 16, focusing mechanism 17；
Dynamic mirror mirror 21, moves speculum base 22.
Embodiment
The present invention is further described with reference to specific embodiment.
As depicted in figs. 1 and 2, a kind of tower heliostat optically focused deviation sensor, including sensor lens barrel 1 and sensor are moved
Speculum 2.
Sensor lens barrel 1 is installed to heliostat pillar 4 by sensor lens cone frame 3.Can be by adjusting sensor lens barrel
Support 3 adjusts the space angle of sensor lens barrel.After the completion of regulation, sensor lens cone frame structure is fixed, and sensor lens barrel 1 is empty
Between angle not with heliostat minute surface rotate and change, sensor lens barrel axis is just to central tower heat dump direction.Sensor is dynamic anti-
Penetrate mirror 2 and minute surface installation axle 6 is installed to by the dynamic mirror support 5 of sensor.In tower solar-thermal generating system, heliostat minute surface 9
It is connected to by minute surface installation axle 6 on elevation angle turntable 7, elevation angle turntable 7 is arranged on azimuth turntable 8, drives heliostat
Minute surface does vertical direction rotation；Azimuth turntable is arranged on the top of heliostat pillar 4, drives elevation angle turntable and heliostat minute surface
Do horizontal direction rotation.Therefore, as heliostat minute surface is rotated, sensor moves speculum space angle relative to heliostat minute surface
It is constant.
Include as shown in figure 3, sensor moves speculum 2：Dynamic mirror mirror 21, moves speculum base 22.Dynamic speculum
Base 22 is isosceles right triangle, and dynamic mirror mirror 21 is installed on hypotenuse, installs and passes under triangle base
Sensor moves mirror support 5.After installation, it is ensured that move mirror mirror and heliostat minute surface into 45 degree of angles.
As shown in figure 4, sensor lens barrel 1 includes：It is lens barrel body, light inlet 13, speculum 14, imaging len 15, photosensitive
Face 16, focusing mechanism 17.Lens barrel body includes lens barrel bobbin 11 and lens barrel vertical section 12, lens barrel bobbin 11 and lens barrel vertical section 12
Tubular is, both axis are orthogonal to link together.In lens barrel body, lens barrel bobbin is installed with lens barrel vertical section junction
Speculum.Speculum 14 and the axis of lens barrel bobbin 11 are into 45 degree of angles.The vertical pars infrasegmentalis of lens barrel has transparent light inlet 13.By sensing
Device moves the light that speculum 2 reflects, and falls after the light inlet 13, speculum 14, imaging len 15 that pass sequentially through sensor lens barrel
To photosurface 16.Photosurface 16 is placed in imaging len focal plane, and incident sunshine is imaged as a hot spot.Deviateed according to hot spot
The distance at photosurface center, you can judge heliostat mirror space of planes angle deviating situation.Sensor lens barrel passes through sensor lens barrel
Support is connected on the wall of heliostat pillar side.After the completion of adjustment sensor lens barrel, lens barrel bobbin axis direction Zheng Dui centers tower top
Heat dump.To realize focusing mechanism is housed at the top of above-mentioned calibration procedures, sensor lens barrel, for realizing manually or automatically
Lens barrel alignment auxiliary.
Sensor, which is installed, refers to Fig. 1 and Fig. 2.The sensor of installation moves speculum on heliostat pillar axis, with
Minute surface motion is not interfered to be defined.The light inlet of the sensor lens barrel of installation is moved above speculum in sensor, it is ensured that sensing
Device, which moves speculum reflected light, can inject light inlet, and not interfere minute surface motion to be defined.
The operation principle of the present invention is as follows：In tower photo-thermal power station, heliostat sun incident light and heliostat normal angle
Time to time change, heliostat normal direction also time to time change, but during heliostat specular light direction is pointed to forever
Heart tower heat dump.Therefore, for a face heliostat, its mirror-reflection light direction is not changed over time.Sensor in the present invention
Device is the angle for deviateing heat dump direction by capturing heliostat specular light, realizes closing for heliostat optically focused angle control
Ring feeds back.
As shown in Fig. 2 after device installation, lens barrel axis points to central tower heat dump direction, not with heliostat minute surface
Rotate and change.Dynamic speculum is arranged in heliostat minute surface installation axle, thus dynamic speculum follow heliostat minute surface rotate and
Synchronous change space angle.
As shown in Figure 5.Sun incident light obtains imaging incident after dynamic mirror mirror and mirror mirror reflection
Light, imaged lens are imaged on photosurface.The sun incident light in same direction, after being reflected through heliostat minute surface 9, obtains mirror
Face reflected light.Because the vertical plane for moving speculum base is parallel with heliostat minute surface, therefore dynamic mirror mirror and heliostat mirror
Face is into 45 degree of angles；Mirror mirror is with lens barrel axis also into 45 degree of angles.According to mirror-reflection principle, it is known that mirror-reflection light direction
It is identical with imaging incident light direction.
When imaging incident light is oriented parallel to lens barrel axis, its imaging facula is located at photosurface center.And be imaged incident
When light has angle with lens barrel axis, imaging facula deviates photosurface center respective distance.After the completion of sensor lens barrel adjustment, its
Axis direction points to central tower heat dump, and this is the target direction of heliostat specular light irradiation.Because imaging incident light with
Mirror-reflection light direction is identical, and when mirror-reflection light direct beam central tower heat dump, imaging incident light imaging facula is in photosurface
Center.The distance at imaging facula deviation photosurface center reflects the journey in the off-center tower heat dump direction of specular light
Degree.
Therefore the optics on-line measurement photosurface facula position such as camera, photoelectric sensor, the real time measure can be passed through
The angle in the off-center tower heat dump direction of heliostat reflected light.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of tower heliostat optically focused deviation sensor, it is characterised in that：Speculum is moved including sensor lens barrel and sensor,
The light inlet of sensor lens barrel is located at sensor and moved above speculum, it is ensured that sensor moves speculum reflected light and injects sensor mirror
The light inlet of cylinder；The heat dump of sensor lens barrel optical axis direction Zheng Dui centers tower top, does not rotate and changes with heliostat minute surface；
Sensor moves speculum and is connected to by the dynamic mirror support of sensor in minute surface installation axle, and the sensor of installation is moved
Speculum is on heliostat pillar axis, as heliostat minute surface is rotated, and sensor moves speculum space angle relative to the settled date
Mirror minute surface is constant；Sensor, which moves speculum, includes dynamic mirror mirror, moves mirror mirror and heliostat minute surface into 45 degree of angles；
Sensor lens barrel includes：Lens barrel body, photosurface, imaging len, speculum, light inlet；Lens barrel body includes lens barrel cylinder
Pipe and lens barrel vertical section, lens barrel bobbin and lens barrel vertical section are tubular, and both axis are orthogonal to link together；Lens barrel sheet
In vivo, speculum is installed in lens barrel bobbin and lens barrel vertical section junction, and speculum and lens barrel bobbin axis are into 45 degree of angles；Imaging is saturating
Mirror is arranged in lens barrel bobbin, and photosurface is placed in imaging len focal plane；Lens barrel vertical section bottom is provided with light inlet；
By sensor move speculum reflection light, pass sequentially through sensor lens barrel light inlet, speculum, imaging len it
After fall on photosurface；Photosurface is placed in imaging len focal plane, and incident sunshine is imaged as a hot spot；Deviateed according to hot spot
The distance at photosurface center, judges heliostat mirror space of planes angle deviating situation.
2. tower heliostat optically focused deviation sensor according to claim 1, it is characterised in that：The dynamic reflection of the sensor
Mirror also includes dynamic speculum base；Dynamic mirror mirror is moved on mirror support by dynamic speculum floor installation in sensor.
3. tower heliostat optically focused deviation sensor according to claim 2, it is characterised in that：The dynamic speculum base
For isosceles right triangle, move mirror mirror and be arranged on hypotenuse, sensor moves mirror support and is arranged on triangle
Under shape base.
4. tower heliostat optically focused deviation sensor according to claim 1, it is characterised in that：The sensor lens barrel is also
Including focusing mechanism, focusing mechanism is arranged on lens barrel bodies top, for realizing that lens barrel manually or automatically is directed at auxiliary.
5. tower heliostat optically focused deviation sensor according to claim 1, it is characterised in that：The sensor lens barrel leads to
Cross the installation of sensor lens cone frame and be connected to heliostat pillar, the sky of sensor lens barrel is adjusted by adjusting sensor lens cone frame
Between angle；After the completion of regulation, sensor lens cone frame structure is fixed, and sensor lens barrel space angle is not rotated with heliostat minute surface
And change.
6. tower heliostat optically focused deviation sensor according to claim 5, it is characterised in that：The sensor lens barrel branch
Frame one end connects sensor lens barrel, and the other end is connected on the wall of heliostat pillar side.
7. tower heliostat optically focused deviation sensor according to claim 1, it is characterised in that：The sensor lens barrel branch
Frame is c-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243181.4A CN106940571B (en) | 2017-04-14 | 2017-04-14 | Tower heliostat condensation deviation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243181.4A CN106940571B (en) | 2017-04-14 | 2017-04-14 | Tower heliostat condensation deviation sensor |
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|---|---|
| CN106940571A true CN106940571A (en) | 2017-07-11 |
| CN106940571B CN106940571B (en) | 2023-06-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710243181.4A Active CN106940571B (en) | 2017-04-14 | 2017-04-14 | Tower heliostat condensation deviation sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117093022A (en) * | 2023-10-20 | 2023-11-21 | 杭州华鼎新能源有限公司 | Heliostat aiming system |
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